forked from OSchip/llvm-project
10257 lines
374 KiB
C++
10257 lines
374 KiB
C++
//===-- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "ARMFeatures.h"
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#include "MCTargetDesc/ARMAddressingModes.h"
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#include "MCTargetDesc/ARMBaseInfo.h"
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#include "MCTargetDesc/ARMMCExpr.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDisassembler/MCDisassembler.h"
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#include "llvm/MC/MCELFStreamer.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstrDesc.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCParser/MCAsmLexer.h"
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#include "llvm/MC/MCParser/MCAsmParser.h"
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#include "llvm/MC/MCParser/MCAsmParserUtils.h"
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#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
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#include "llvm/MC/MCParser/MCTargetAsmParser.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/ARMBuildAttributes.h"
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#include "llvm/Support/ARMEHABI.h"
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#include "llvm/Support/COFF.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ELF.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/TargetParser.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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class ARMOperand;
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enum VectorLaneTy { NoLanes, AllLanes, IndexedLane };
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class UnwindContext {
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MCAsmParser &Parser;
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typedef SmallVector<SMLoc, 4> Locs;
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Locs FnStartLocs;
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Locs CantUnwindLocs;
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Locs PersonalityLocs;
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Locs PersonalityIndexLocs;
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Locs HandlerDataLocs;
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int FPReg;
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public:
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UnwindContext(MCAsmParser &P) : Parser(P), FPReg(ARM::SP) {}
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bool hasFnStart() const { return !FnStartLocs.empty(); }
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bool cantUnwind() const { return !CantUnwindLocs.empty(); }
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bool hasHandlerData() const { return !HandlerDataLocs.empty(); }
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bool hasPersonality() const {
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return !(PersonalityLocs.empty() && PersonalityIndexLocs.empty());
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}
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void recordFnStart(SMLoc L) { FnStartLocs.push_back(L); }
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void recordCantUnwind(SMLoc L) { CantUnwindLocs.push_back(L); }
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void recordPersonality(SMLoc L) { PersonalityLocs.push_back(L); }
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void recordHandlerData(SMLoc L) { HandlerDataLocs.push_back(L); }
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void recordPersonalityIndex(SMLoc L) { PersonalityIndexLocs.push_back(L); }
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void saveFPReg(int Reg) { FPReg = Reg; }
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int getFPReg() const { return FPReg; }
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void emitFnStartLocNotes() const {
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for (Locs::const_iterator FI = FnStartLocs.begin(), FE = FnStartLocs.end();
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FI != FE; ++FI)
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Parser.Note(*FI, ".fnstart was specified here");
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}
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void emitCantUnwindLocNotes() const {
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for (Locs::const_iterator UI = CantUnwindLocs.begin(),
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UE = CantUnwindLocs.end(); UI != UE; ++UI)
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Parser.Note(*UI, ".cantunwind was specified here");
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}
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void emitHandlerDataLocNotes() const {
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for (Locs::const_iterator HI = HandlerDataLocs.begin(),
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HE = HandlerDataLocs.end(); HI != HE; ++HI)
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Parser.Note(*HI, ".handlerdata was specified here");
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}
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void emitPersonalityLocNotes() const {
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for (Locs::const_iterator PI = PersonalityLocs.begin(),
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PE = PersonalityLocs.end(),
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PII = PersonalityIndexLocs.begin(),
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PIE = PersonalityIndexLocs.end();
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PI != PE || PII != PIE;) {
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if (PI != PE && (PII == PIE || PI->getPointer() < PII->getPointer()))
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Parser.Note(*PI++, ".personality was specified here");
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else if (PII != PIE && (PI == PE || PII->getPointer() < PI->getPointer()))
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Parser.Note(*PII++, ".personalityindex was specified here");
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else
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llvm_unreachable(".personality and .personalityindex cannot be "
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"at the same location");
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}
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}
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void reset() {
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FnStartLocs = Locs();
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CantUnwindLocs = Locs();
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PersonalityLocs = Locs();
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HandlerDataLocs = Locs();
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PersonalityIndexLocs = Locs();
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FPReg = ARM::SP;
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}
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};
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class ARMAsmParser : public MCTargetAsmParser {
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const MCInstrInfo &MII;
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const MCRegisterInfo *MRI;
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UnwindContext UC;
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ARMTargetStreamer &getTargetStreamer() {
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assert(getParser().getStreamer().getTargetStreamer() &&
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"do not have a target streamer");
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MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer();
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return static_cast<ARMTargetStreamer &>(TS);
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}
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// Map of register aliases registers via the .req directive.
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StringMap<unsigned> RegisterReqs;
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bool NextSymbolIsThumb;
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struct {
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ARMCC::CondCodes Cond; // Condition for IT block.
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unsigned Mask:4; // Condition mask for instructions.
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// Starting at first 1 (from lsb).
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// '1' condition as indicated in IT.
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// '0' inverse of condition (else).
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// Count of instructions in IT block is
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// 4 - trailingzeroes(mask)
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bool FirstCond; // Explicit flag for when we're parsing the
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// First instruction in the IT block. It's
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// implied in the mask, so needs special
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// handling.
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unsigned CurPosition; // Current position in parsing of IT
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// block. In range [0,3]. Initialized
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// according to count of instructions in block.
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// ~0U if no active IT block.
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} ITState;
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bool inITBlock() { return ITState.CurPosition != ~0U; }
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bool lastInITBlock() {
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return ITState.CurPosition == 4 - countTrailingZeros(ITState.Mask);
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}
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void forwardITPosition() {
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if (!inITBlock()) return;
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// Move to the next instruction in the IT block, if there is one. If not,
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// mark the block as done.
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unsigned TZ = countTrailingZeros(ITState.Mask);
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if (++ITState.CurPosition == 5 - TZ)
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ITState.CurPosition = ~0U; // Done with the IT block after this.
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}
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void Note(SMLoc L, const Twine &Msg, ArrayRef<SMRange> Ranges = None) {
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return getParser().Note(L, Msg, Ranges);
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}
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bool Warning(SMLoc L, const Twine &Msg,
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ArrayRef<SMRange> Ranges = None) {
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return getParser().Warning(L, Msg, Ranges);
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}
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bool Error(SMLoc L, const Twine &Msg,
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ArrayRef<SMRange> Ranges = None) {
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return getParser().Error(L, Msg, Ranges);
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}
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bool validatetLDMRegList(const MCInst &Inst, const OperandVector &Operands,
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unsigned ListNo, bool IsARPop = false);
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bool validatetSTMRegList(const MCInst &Inst, const OperandVector &Operands,
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unsigned ListNo);
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int tryParseRegister();
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bool tryParseRegisterWithWriteBack(OperandVector &);
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int tryParseShiftRegister(OperandVector &);
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bool parseRegisterList(OperandVector &);
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bool parseMemory(OperandVector &);
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bool parseOperand(OperandVector &, StringRef Mnemonic);
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bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
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bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
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unsigned &ShiftAmount);
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bool parseLiteralValues(unsigned Size, SMLoc L);
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bool parseDirectiveThumb(SMLoc L);
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bool parseDirectiveARM(SMLoc L);
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bool parseDirectiveThumbFunc(SMLoc L);
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bool parseDirectiveCode(SMLoc L);
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bool parseDirectiveSyntax(SMLoc L);
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bool parseDirectiveReq(StringRef Name, SMLoc L);
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bool parseDirectiveUnreq(SMLoc L);
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bool parseDirectiveArch(SMLoc L);
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bool parseDirectiveEabiAttr(SMLoc L);
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bool parseDirectiveCPU(SMLoc L);
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bool parseDirectiveFPU(SMLoc L);
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bool parseDirectiveFnStart(SMLoc L);
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bool parseDirectiveFnEnd(SMLoc L);
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bool parseDirectiveCantUnwind(SMLoc L);
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bool parseDirectivePersonality(SMLoc L);
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bool parseDirectiveHandlerData(SMLoc L);
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bool parseDirectiveSetFP(SMLoc L);
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bool parseDirectivePad(SMLoc L);
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bool parseDirectiveRegSave(SMLoc L, bool IsVector);
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bool parseDirectiveInst(SMLoc L, char Suffix = '\0');
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bool parseDirectiveLtorg(SMLoc L);
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bool parseDirectiveEven(SMLoc L);
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bool parseDirectivePersonalityIndex(SMLoc L);
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bool parseDirectiveUnwindRaw(SMLoc L);
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bool parseDirectiveTLSDescSeq(SMLoc L);
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bool parseDirectiveMovSP(SMLoc L);
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bool parseDirectiveObjectArch(SMLoc L);
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bool parseDirectiveArchExtension(SMLoc L);
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bool parseDirectiveAlign(SMLoc L);
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bool parseDirectiveThumbSet(SMLoc L);
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StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
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bool &CarrySetting, unsigned &ProcessorIMod,
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StringRef &ITMask);
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void getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
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bool &CanAcceptCarrySet,
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bool &CanAcceptPredicationCode);
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void tryConvertingToTwoOperandForm(StringRef Mnemonic, bool CarrySetting,
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OperandVector &Operands);
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bool isThumb() const {
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// FIXME: Can tablegen auto-generate this?
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return getSTI().getFeatureBits()[ARM::ModeThumb];
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}
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bool isThumbOne() const {
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return isThumb() && !getSTI().getFeatureBits()[ARM::FeatureThumb2];
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}
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bool isThumbTwo() const {
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return isThumb() && getSTI().getFeatureBits()[ARM::FeatureThumb2];
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}
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bool hasThumb() const {
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return getSTI().getFeatureBits()[ARM::HasV4TOps];
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}
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bool hasThumb2() const {
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return getSTI().getFeatureBits()[ARM::FeatureThumb2];
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}
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bool hasV6Ops() const {
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return getSTI().getFeatureBits()[ARM::HasV6Ops];
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}
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bool hasV6T2Ops() const {
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return getSTI().getFeatureBits()[ARM::HasV6T2Ops];
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}
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bool hasV6MOps() const {
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return getSTI().getFeatureBits()[ARM::HasV6MOps];
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}
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bool hasV7Ops() const {
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return getSTI().getFeatureBits()[ARM::HasV7Ops];
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}
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bool hasV8Ops() const {
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return getSTI().getFeatureBits()[ARM::HasV8Ops];
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}
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bool hasV8MBaseline() const {
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return getSTI().getFeatureBits()[ARM::HasV8MBaselineOps];
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}
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bool hasV8MMainline() const {
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return getSTI().getFeatureBits()[ARM::HasV8MMainlineOps];
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}
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bool has8MSecExt() const {
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return getSTI().getFeatureBits()[ARM::Feature8MSecExt];
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}
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bool hasARM() const {
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return !getSTI().getFeatureBits()[ARM::FeatureNoARM];
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}
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bool hasDSP() const {
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return getSTI().getFeatureBits()[ARM::FeatureDSP];
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}
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bool hasD16() const {
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return getSTI().getFeatureBits()[ARM::FeatureD16];
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}
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bool hasV8_1aOps() const {
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return getSTI().getFeatureBits()[ARM::HasV8_1aOps];
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}
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void SwitchMode() {
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MCSubtargetInfo &STI = copySTI();
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uint64_t FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
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setAvailableFeatures(FB);
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}
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void FixModeAfterArchChange(bool WasThumb, SMLoc Loc);
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bool isMClass() const {
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return getSTI().getFeatureBits()[ARM::FeatureMClass];
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}
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/// @name Auto-generated Match Functions
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/// {
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#define GET_ASSEMBLER_HEADER
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#include "ARMGenAsmMatcher.inc"
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/// }
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OperandMatchResultTy parseITCondCode(OperandVector &);
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OperandMatchResultTy parseCoprocNumOperand(OperandVector &);
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OperandMatchResultTy parseCoprocRegOperand(OperandVector &);
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OperandMatchResultTy parseCoprocOptionOperand(OperandVector &);
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OperandMatchResultTy parseMemBarrierOptOperand(OperandVector &);
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OperandMatchResultTy parseInstSyncBarrierOptOperand(OperandVector &);
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OperandMatchResultTy parseProcIFlagsOperand(OperandVector &);
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OperandMatchResultTy parseMSRMaskOperand(OperandVector &);
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OperandMatchResultTy parseBankedRegOperand(OperandVector &);
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OperandMatchResultTy parsePKHImm(OperandVector &O, StringRef Op, int Low,
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int High);
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OperandMatchResultTy parsePKHLSLImm(OperandVector &O) {
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return parsePKHImm(O, "lsl", 0, 31);
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}
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OperandMatchResultTy parsePKHASRImm(OperandVector &O) {
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return parsePKHImm(O, "asr", 1, 32);
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}
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OperandMatchResultTy parseSetEndImm(OperandVector &);
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OperandMatchResultTy parseShifterImm(OperandVector &);
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OperandMatchResultTy parseRotImm(OperandVector &);
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OperandMatchResultTy parseModImm(OperandVector &);
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OperandMatchResultTy parseBitfield(OperandVector &);
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OperandMatchResultTy parsePostIdxReg(OperandVector &);
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OperandMatchResultTy parseAM3Offset(OperandVector &);
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OperandMatchResultTy parseFPImm(OperandVector &);
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OperandMatchResultTy parseVectorList(OperandVector &);
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OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index,
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SMLoc &EndLoc);
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// Asm Match Converter Methods
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void cvtThumbMultiply(MCInst &Inst, const OperandVector &);
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void cvtThumbBranches(MCInst &Inst, const OperandVector &);
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bool validateInstruction(MCInst &Inst, const OperandVector &Ops);
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bool processInstruction(MCInst &Inst, const OperandVector &Ops, MCStreamer &Out);
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bool shouldOmitCCOutOperand(StringRef Mnemonic, OperandVector &Operands);
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bool shouldOmitPredicateOperand(StringRef Mnemonic, OperandVector &Operands);
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public:
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enum ARMMatchResultTy {
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Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
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Match_RequiresNotITBlock,
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Match_RequiresV6,
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Match_RequiresThumb2,
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Match_RequiresV8,
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#define GET_OPERAND_DIAGNOSTIC_TYPES
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#include "ARMGenAsmMatcher.inc"
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};
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ARMAsmParser(const MCSubtargetInfo &STI, MCAsmParser &Parser,
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const MCInstrInfo &MII, const MCTargetOptions &Options)
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: MCTargetAsmParser(Options, STI), MII(MII), UC(Parser) {
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MCAsmParserExtension::Initialize(Parser);
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// Cache the MCRegisterInfo.
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MRI = getContext().getRegisterInfo();
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// Initialize the set of available features.
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setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
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// Not in an ITBlock to start with.
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ITState.CurPosition = ~0U;
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NextSymbolIsThumb = false;
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}
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// Implementation of the MCTargetAsmParser interface:
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bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
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bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
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SMLoc NameLoc, OperandVector &Operands) override;
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bool ParseDirective(AsmToken DirectiveID) override;
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unsigned validateTargetOperandClass(MCParsedAsmOperand &Op,
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unsigned Kind) override;
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unsigned checkTargetMatchPredicate(MCInst &Inst) override;
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bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
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OperandVector &Operands, MCStreamer &Out,
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uint64_t &ErrorInfo,
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bool MatchingInlineAsm) override;
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void onLabelParsed(MCSymbol *Symbol) override;
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};
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} // end anonymous namespace
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namespace {
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/// ARMOperand - Instances of this class represent a parsed ARM machine
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/// operand.
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class ARMOperand : public MCParsedAsmOperand {
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enum KindTy {
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k_CondCode,
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k_CCOut,
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k_ITCondMask,
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k_CoprocNum,
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k_CoprocReg,
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k_CoprocOption,
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k_Immediate,
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k_MemBarrierOpt,
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k_InstSyncBarrierOpt,
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k_Memory,
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k_PostIndexRegister,
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k_MSRMask,
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k_BankedReg,
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k_ProcIFlags,
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k_VectorIndex,
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k_Register,
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k_RegisterList,
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k_DPRRegisterList,
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k_SPRRegisterList,
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k_VectorList,
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k_VectorListAllLanes,
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k_VectorListIndexed,
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k_ShiftedRegister,
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k_ShiftedImmediate,
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k_ShifterImmediate,
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k_RotateImmediate,
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k_ModifiedImmediate,
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k_ConstantPoolImmediate,
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k_BitfieldDescriptor,
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k_Token,
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} Kind;
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SMLoc StartLoc, EndLoc, AlignmentLoc;
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SmallVector<unsigned, 8> Registers;
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struct CCOp {
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ARMCC::CondCodes Val;
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};
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struct CopOp {
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unsigned Val;
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};
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struct CoprocOptionOp {
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unsigned Val;
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};
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struct ITMaskOp {
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unsigned Mask:4;
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};
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struct MBOptOp {
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ARM_MB::MemBOpt Val;
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};
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struct ISBOptOp {
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ARM_ISB::InstSyncBOpt Val;
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};
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struct IFlagsOp {
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ARM_PROC::IFlags Val;
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};
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struct MMaskOp {
|
|
unsigned Val;
|
|
};
|
|
|
|
struct BankedRegOp {
|
|
unsigned Val;
|
|
};
|
|
|
|
struct TokOp {
|
|
const char *Data;
|
|
unsigned Length;
|
|
};
|
|
|
|
struct RegOp {
|
|
unsigned RegNum;
|
|
};
|
|
|
|
// A vector register list is a sequential list of 1 to 4 registers.
|
|
struct VectorListOp {
|
|
unsigned RegNum;
|
|
unsigned Count;
|
|
unsigned LaneIndex;
|
|
bool isDoubleSpaced;
|
|
};
|
|
|
|
struct VectorIndexOp {
|
|
unsigned Val;
|
|
};
|
|
|
|
struct ImmOp {
|
|
const MCExpr *Val;
|
|
};
|
|
|
|
/// Combined record for all forms of ARM address expressions.
|
|
struct MemoryOp {
|
|
unsigned BaseRegNum;
|
|
// Offset is in OffsetReg or OffsetImm. If both are zero, no offset
|
|
// was specified.
|
|
const MCConstantExpr *OffsetImm; // Offset immediate value
|
|
unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
|
|
ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
|
|
unsigned ShiftImm; // shift for OffsetReg.
|
|
unsigned Alignment; // 0 = no alignment specified
|
|
// n = alignment in bytes (2, 4, 8, 16, or 32)
|
|
unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
|
|
};
|
|
|
|
struct PostIdxRegOp {
|
|
unsigned RegNum;
|
|
bool isAdd;
|
|
ARM_AM::ShiftOpc ShiftTy;
|
|
unsigned ShiftImm;
|
|
};
|
|
|
|
struct ShifterImmOp {
|
|
bool isASR;
|
|
unsigned Imm;
|
|
};
|
|
|
|
struct RegShiftedRegOp {
|
|
ARM_AM::ShiftOpc ShiftTy;
|
|
unsigned SrcReg;
|
|
unsigned ShiftReg;
|
|
unsigned ShiftImm;
|
|
};
|
|
|
|
struct RegShiftedImmOp {
|
|
ARM_AM::ShiftOpc ShiftTy;
|
|
unsigned SrcReg;
|
|
unsigned ShiftImm;
|
|
};
|
|
|
|
struct RotImmOp {
|
|
unsigned Imm;
|
|
};
|
|
|
|
struct ModImmOp {
|
|
unsigned Bits;
|
|
unsigned Rot;
|
|
};
|
|
|
|
struct BitfieldOp {
|
|
unsigned LSB;
|
|
unsigned Width;
|
|
};
|
|
|
|
union {
|
|
struct CCOp CC;
|
|
struct CopOp Cop;
|
|
struct CoprocOptionOp CoprocOption;
|
|
struct MBOptOp MBOpt;
|
|
struct ISBOptOp ISBOpt;
|
|
struct ITMaskOp ITMask;
|
|
struct IFlagsOp IFlags;
|
|
struct MMaskOp MMask;
|
|
struct BankedRegOp BankedReg;
|
|
struct TokOp Tok;
|
|
struct RegOp Reg;
|
|
struct VectorListOp VectorList;
|
|
struct VectorIndexOp VectorIndex;
|
|
struct ImmOp Imm;
|
|
struct MemoryOp Memory;
|
|
struct PostIdxRegOp PostIdxReg;
|
|
struct ShifterImmOp ShifterImm;
|
|
struct RegShiftedRegOp RegShiftedReg;
|
|
struct RegShiftedImmOp RegShiftedImm;
|
|
struct RotImmOp RotImm;
|
|
struct ModImmOp ModImm;
|
|
struct BitfieldOp Bitfield;
|
|
};
|
|
|
|
public:
|
|
ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
|
|
|
|
/// getStartLoc - Get the location of the first token of this operand.
|
|
SMLoc getStartLoc() const override { return StartLoc; }
|
|
/// getEndLoc - Get the location of the last token of this operand.
|
|
SMLoc getEndLoc() const override { return EndLoc; }
|
|
/// getLocRange - Get the range between the first and last token of this
|
|
/// operand.
|
|
SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); }
|
|
|
|
/// getAlignmentLoc - Get the location of the Alignment token of this operand.
|
|
SMLoc getAlignmentLoc() const {
|
|
assert(Kind == k_Memory && "Invalid access!");
|
|
return AlignmentLoc;
|
|
}
|
|
|
|
ARMCC::CondCodes getCondCode() const {
|
|
assert(Kind == k_CondCode && "Invalid access!");
|
|
return CC.Val;
|
|
}
|
|
|
|
unsigned getCoproc() const {
|
|
assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
|
|
return Cop.Val;
|
|
}
|
|
|
|
StringRef getToken() const {
|
|
assert(Kind == k_Token && "Invalid access!");
|
|
return StringRef(Tok.Data, Tok.Length);
|
|
}
|
|
|
|
unsigned getReg() const override {
|
|
assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
|
|
return Reg.RegNum;
|
|
}
|
|
|
|
const SmallVectorImpl<unsigned> &getRegList() const {
|
|
assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
|
|
Kind == k_SPRRegisterList) && "Invalid access!");
|
|
return Registers;
|
|
}
|
|
|
|
const MCExpr *getImm() const {
|
|
assert(isImm() && "Invalid access!");
|
|
return Imm.Val;
|
|
}
|
|
|
|
const MCExpr *getConstantPoolImm() const {
|
|
assert(isConstantPoolImm() && "Invalid access!");
|
|
return Imm.Val;
|
|
}
|
|
|
|
unsigned getVectorIndex() const {
|
|
assert(Kind == k_VectorIndex && "Invalid access!");
|
|
return VectorIndex.Val;
|
|
}
|
|
|
|
ARM_MB::MemBOpt getMemBarrierOpt() const {
|
|
assert(Kind == k_MemBarrierOpt && "Invalid access!");
|
|
return MBOpt.Val;
|
|
}
|
|
|
|
ARM_ISB::InstSyncBOpt getInstSyncBarrierOpt() const {
|
|
assert(Kind == k_InstSyncBarrierOpt && "Invalid access!");
|
|
return ISBOpt.Val;
|
|
}
|
|
|
|
ARM_PROC::IFlags getProcIFlags() const {
|
|
assert(Kind == k_ProcIFlags && "Invalid access!");
|
|
return IFlags.Val;
|
|
}
|
|
|
|
unsigned getMSRMask() const {
|
|
assert(Kind == k_MSRMask && "Invalid access!");
|
|
return MMask.Val;
|
|
}
|
|
|
|
unsigned getBankedReg() const {
|
|
assert(Kind == k_BankedReg && "Invalid access!");
|
|
return BankedReg.Val;
|
|
}
|
|
|
|
bool isCoprocNum() const { return Kind == k_CoprocNum; }
|
|
bool isCoprocReg() const { return Kind == k_CoprocReg; }
|
|
bool isCoprocOption() const { return Kind == k_CoprocOption; }
|
|
bool isCondCode() const { return Kind == k_CondCode; }
|
|
bool isCCOut() const { return Kind == k_CCOut; }
|
|
bool isITMask() const { return Kind == k_ITCondMask; }
|
|
bool isITCondCode() const { return Kind == k_CondCode; }
|
|
bool isImm() const override {
|
|
return Kind == k_Immediate;
|
|
}
|
|
// checks whether this operand is an unsigned offset which fits is a field
|
|
// of specified width and scaled by a specific number of bits
|
|
template<unsigned width, unsigned scale>
|
|
bool isUnsignedOffset() const {
|
|
if (!isImm()) return false;
|
|
if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
|
|
if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
|
|
int64_t Val = CE->getValue();
|
|
int64_t Align = 1LL << scale;
|
|
int64_t Max = Align * ((1LL << width) - 1);
|
|
return ((Val % Align) == 0) && (Val >= 0) && (Val <= Max);
|
|
}
|
|
return false;
|
|
}
|
|
// checks whether this operand is an signed offset which fits is a field
|
|
// of specified width and scaled by a specific number of bits
|
|
template<unsigned width, unsigned scale>
|
|
bool isSignedOffset() const {
|
|
if (!isImm()) return false;
|
|
if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
|
|
if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
|
|
int64_t Val = CE->getValue();
|
|
int64_t Align = 1LL << scale;
|
|
int64_t Max = Align * ((1LL << (width-1)) - 1);
|
|
int64_t Min = -Align * (1LL << (width-1));
|
|
return ((Val % Align) == 0) && (Val >= Min) && (Val <= Max);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// checks whether this operand is a memory operand computed as an offset
|
|
// applied to PC. the offset may have 8 bits of magnitude and is represented
|
|
// with two bits of shift. textually it may be either [pc, #imm], #imm or
|
|
// relocable expression...
|
|
bool isThumbMemPC() const {
|
|
int64_t Val = 0;
|
|
if (isImm()) {
|
|
if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val);
|
|
if (!CE) return false;
|
|
Val = CE->getValue();
|
|
}
|
|
else if (isMem()) {
|
|
if(!Memory.OffsetImm || Memory.OffsetRegNum) return false;
|
|
if(Memory.BaseRegNum != ARM::PC) return false;
|
|
Val = Memory.OffsetImm->getValue();
|
|
}
|
|
else return false;
|
|
return ((Val % 4) == 0) && (Val >= 0) && (Val <= 1020);
|
|
}
|
|
bool isFPImm() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
|
|
return Val != -1;
|
|
}
|
|
bool isFBits16() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value <= 16;
|
|
}
|
|
bool isFBits32() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 1 && Value <= 32;
|
|
}
|
|
bool isImm8s4() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
|
|
}
|
|
bool isImm0_1020s4() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
|
|
}
|
|
bool isImm0_508s4() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
|
|
}
|
|
bool isImm0_508s4Neg() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = -CE->getValue();
|
|
// explicitly exclude zero. we want that to use the normal 0_508 version.
|
|
return ((Value & 3) == 0) && Value > 0 && Value <= 508;
|
|
}
|
|
bool isImm0_239() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 240;
|
|
}
|
|
bool isImm0_255() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 256;
|
|
}
|
|
bool isImm0_4095() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 4096;
|
|
}
|
|
bool isImm0_4095Neg() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = -CE->getValue();
|
|
return Value > 0 && Value < 4096;
|
|
}
|
|
bool isImm0_1() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 2;
|
|
}
|
|
bool isImm0_3() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 4;
|
|
}
|
|
bool isImm0_7() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 8;
|
|
}
|
|
bool isImm0_15() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 16;
|
|
}
|
|
bool isImm0_31() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 32;
|
|
}
|
|
bool isImm0_63() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 64;
|
|
}
|
|
bool isImm8() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value == 8;
|
|
}
|
|
bool isImm16() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value == 16;
|
|
}
|
|
bool isImm32() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value == 32;
|
|
}
|
|
bool isShrImm8() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value <= 8;
|
|
}
|
|
bool isShrImm16() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value <= 16;
|
|
}
|
|
bool isShrImm32() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value <= 32;
|
|
}
|
|
bool isShrImm64() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value <= 64;
|
|
}
|
|
bool isImm1_7() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value < 8;
|
|
}
|
|
bool isImm1_15() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value < 16;
|
|
}
|
|
bool isImm1_31() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value < 32;
|
|
}
|
|
bool isImm1_16() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value < 17;
|
|
}
|
|
bool isImm1_32() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value < 33;
|
|
}
|
|
bool isImm0_32() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 33;
|
|
}
|
|
bool isImm0_65535() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 65536;
|
|
}
|
|
bool isImm256_65535Expr() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// If it's not a constant expression, it'll generate a fixup and be
|
|
// handled later.
|
|
if (!CE) return true;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 256 && Value < 65536;
|
|
}
|
|
bool isImm0_65535Expr() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// If it's not a constant expression, it'll generate a fixup and be
|
|
// handled later.
|
|
if (!CE) return true;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 65536;
|
|
}
|
|
bool isImm24bit() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value <= 0xffffff;
|
|
}
|
|
bool isImmThumbSR() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value < 33;
|
|
}
|
|
bool isPKHLSLImm() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value >= 0 && Value < 32;
|
|
}
|
|
bool isPKHASRImm() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value > 0 && Value <= 32;
|
|
}
|
|
bool isAdrLabel() const {
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup.
|
|
if (isImm() && !isa<MCConstantExpr>(getImm()))
|
|
return true;
|
|
|
|
// If it is a constant, it must fit into a modified immediate encoding.
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return (ARM_AM::getSOImmVal(Value) != -1 ||
|
|
ARM_AM::getSOImmVal(-Value) != -1);
|
|
}
|
|
bool isT2SOImm() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ARM_AM::getT2SOImmVal(Value) != -1;
|
|
}
|
|
bool isT2SOImmNot() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ARM_AM::getT2SOImmVal(Value) == -1 &&
|
|
ARM_AM::getT2SOImmVal(~Value) != -1;
|
|
}
|
|
bool isT2SOImmNeg() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
// Only use this when not representable as a plain so_imm.
|
|
return ARM_AM::getT2SOImmVal(Value) == -1 &&
|
|
ARM_AM::getT2SOImmVal(-Value) != -1;
|
|
}
|
|
bool isSetEndImm() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return Value == 1 || Value == 0;
|
|
}
|
|
bool isReg() const override { return Kind == k_Register; }
|
|
bool isRegList() const { return Kind == k_RegisterList; }
|
|
bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
|
|
bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
|
|
bool isToken() const override { return Kind == k_Token; }
|
|
bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
|
|
bool isInstSyncBarrierOpt() const { return Kind == k_InstSyncBarrierOpt; }
|
|
bool isMem() const override { return Kind == k_Memory; }
|
|
bool isShifterImm() const { return Kind == k_ShifterImmediate; }
|
|
bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
|
|
bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
|
|
bool isRotImm() const { return Kind == k_RotateImmediate; }
|
|
bool isModImm() const { return Kind == k_ModifiedImmediate; }
|
|
bool isModImmNot() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ARM_AM::getSOImmVal(~Value) != -1;
|
|
}
|
|
bool isModImmNeg() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
return ARM_AM::getSOImmVal(Value) == -1 &&
|
|
ARM_AM::getSOImmVal(-Value) != -1;
|
|
}
|
|
bool isConstantPoolImm() const { return Kind == k_ConstantPoolImmediate; }
|
|
bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
|
|
bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
|
|
bool isPostIdxReg() const {
|
|
return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
|
|
}
|
|
bool isMemNoOffset(bool alignOK = false, unsigned Alignment = 0) const {
|
|
if (!isMem())
|
|
return false;
|
|
// No offset of any kind.
|
|
return Memory.OffsetRegNum == 0 && Memory.OffsetImm == nullptr &&
|
|
(alignOK || Memory.Alignment == Alignment);
|
|
}
|
|
bool isMemPCRelImm12() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Base register must be PC.
|
|
if (Memory.BaseRegNum != ARM::PC)
|
|
return false;
|
|
// Immediate offset in range [-4095, 4095].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
|
|
}
|
|
bool isAlignedMemory() const {
|
|
return isMemNoOffset(true);
|
|
}
|
|
bool isAlignedMemoryNone() const {
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isDupAlignedMemoryNone() const {
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isAlignedMemory16() const {
|
|
if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isDupAlignedMemory16() const {
|
|
if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isAlignedMemory32() const {
|
|
if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isDupAlignedMemory32() const {
|
|
if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isAlignedMemory64() const {
|
|
if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isDupAlignedMemory64() const {
|
|
if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isAlignedMemory64or128() const {
|
|
if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
|
|
return true;
|
|
if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isDupAlignedMemory64or128() const {
|
|
if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
|
|
return true;
|
|
if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isAlignedMemory64or128or256() const {
|
|
if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
|
|
return true;
|
|
if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
|
|
return true;
|
|
if (isMemNoOffset(false, 32)) // alignment in bytes for 256-bits is 32.
|
|
return true;
|
|
return isMemNoOffset(false, 0);
|
|
}
|
|
bool isAddrMode2() const {
|
|
if (!isMem() || Memory.Alignment != 0) return false;
|
|
// Check for register offset.
|
|
if (Memory.OffsetRegNum) return true;
|
|
// Immediate offset in range [-4095, 4095].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val > -4096 && Val < 4096;
|
|
}
|
|
bool isAM2OffsetImm() const {
|
|
if (!isImm()) return false;
|
|
// Immediate offset in range [-4095, 4095].
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Val = CE->getValue();
|
|
return (Val == INT32_MIN) || (Val > -4096 && Val < 4096);
|
|
}
|
|
bool isAddrMode3() const {
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm() && !isa<MCConstantExpr>(getImm()))
|
|
return true;
|
|
if (!isMem() || Memory.Alignment != 0) return false;
|
|
// No shifts are legal for AM3.
|
|
if (Memory.ShiftType != ARM_AM::no_shift) return false;
|
|
// Check for register offset.
|
|
if (Memory.OffsetRegNum) return true;
|
|
// Immediate offset in range [-255, 255].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
// The #-0 offset is encoded as INT32_MIN, and we have to check
|
|
// for this too.
|
|
return (Val > -256 && Val < 256) || Val == INT32_MIN;
|
|
}
|
|
bool isAM3Offset() const {
|
|
if (Kind != k_Immediate && Kind != k_PostIndexRegister)
|
|
return false;
|
|
if (Kind == k_PostIndexRegister)
|
|
return PostIdxReg.ShiftTy == ARM_AM::no_shift;
|
|
// Immediate offset in range [-255, 255].
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Val = CE->getValue();
|
|
// Special case, #-0 is INT32_MIN.
|
|
return (Val > -256 && Val < 256) || Val == INT32_MIN;
|
|
}
|
|
bool isAddrMode5() const {
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm() && !isa<MCConstantExpr>(getImm()))
|
|
return true;
|
|
if (!isMem() || Memory.Alignment != 0) return false;
|
|
// Check for register offset.
|
|
if (Memory.OffsetRegNum) return false;
|
|
// Immediate offset in range [-1020, 1020] and a multiple of 4.
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
|
|
Val == INT32_MIN;
|
|
}
|
|
bool isAddrMode5FP16() const {
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm() && !isa<MCConstantExpr>(getImm()))
|
|
return true;
|
|
if (!isMem() || Memory.Alignment != 0) return false;
|
|
// Check for register offset.
|
|
if (Memory.OffsetRegNum) return false;
|
|
// Immediate offset in range [-510, 510] and a multiple of 2.
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val >= -510 && Val <= 510 && ((Val & 1) == 0)) || Val == INT32_MIN;
|
|
}
|
|
bool isMemTBB() const {
|
|
if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
|
|
Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
|
|
return false;
|
|
return true;
|
|
}
|
|
bool isMemTBH() const {
|
|
if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
|
|
Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
|
|
Memory.Alignment != 0 )
|
|
return false;
|
|
return true;
|
|
}
|
|
bool isMemRegOffset() const {
|
|
if (!isMem() || !Memory.OffsetRegNum || Memory.Alignment != 0)
|
|
return false;
|
|
return true;
|
|
}
|
|
bool isT2MemRegOffset() const {
|
|
if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
|
|
Memory.Alignment != 0 || Memory.BaseRegNum == ARM::PC)
|
|
return false;
|
|
// Only lsl #{0, 1, 2, 3} allowed.
|
|
if (Memory.ShiftType == ARM_AM::no_shift)
|
|
return true;
|
|
if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
|
|
return false;
|
|
return true;
|
|
}
|
|
bool isMemThumbRR() const {
|
|
// Thumb reg+reg addressing is simple. Just two registers, a base and
|
|
// an offset. No shifts, negations or any other complicating factors.
|
|
if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
|
|
Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
|
|
return false;
|
|
return isARMLowRegister(Memory.BaseRegNum) &&
|
|
(!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
|
|
}
|
|
bool isMemThumbRIs4() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 ||
|
|
!isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset, multiple of 4 in range [0, 124].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val >= 0 && Val <= 124 && (Val % 4) == 0;
|
|
}
|
|
bool isMemThumbRIs2() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 ||
|
|
!isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset, multiple of 4 in range [0, 62].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val >= 0 && Val <= 62 && (Val % 2) == 0;
|
|
}
|
|
bool isMemThumbRIs1() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 ||
|
|
!isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset in range [0, 31].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val >= 0 && Val <= 31;
|
|
}
|
|
bool isMemThumbSPI() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 ||
|
|
Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset, multiple of 4 in range [0, 1020].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
|
|
}
|
|
bool isMemImm8s4Offset() const {
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm() && !isa<MCConstantExpr>(getImm()))
|
|
return true;
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset a multiple of 4 in range [-1020, 1020].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
// Special case, #-0 is INT32_MIN.
|
|
return (Val >= -1020 && Val <= 1020 && (Val & 3) == 0) || Val == INT32_MIN;
|
|
}
|
|
bool isMemImm0_1020s4Offset() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset a multiple of 4 in range [0, 1020].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
|
|
}
|
|
bool isMemImm8Offset() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Base reg of PC isn't allowed for these encodings.
|
|
if (Memory.BaseRegNum == ARM::PC) return false;
|
|
// Immediate offset in range [-255, 255].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val == INT32_MIN) || (Val > -256 && Val < 256);
|
|
}
|
|
bool isMemPosImm8Offset() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset in range [0, 255].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return Val >= 0 && Val < 256;
|
|
}
|
|
bool isMemNegImm8Offset() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Base reg of PC isn't allowed for these encodings.
|
|
if (Memory.BaseRegNum == ARM::PC) return false;
|
|
// Immediate offset in range [-255, -1].
|
|
if (!Memory.OffsetImm) return false;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val == INT32_MIN) || (Val > -256 && Val < 0);
|
|
}
|
|
bool isMemUImm12Offset() const {
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset in range [0, 4095].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val >= 0 && Val < 4096);
|
|
}
|
|
bool isMemImm12Offset() const {
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
|
|
if (isImm() && !isa<MCConstantExpr>(getImm()))
|
|
return true;
|
|
|
|
if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
|
|
return false;
|
|
// Immediate offset in range [-4095, 4095].
|
|
if (!Memory.OffsetImm) return true;
|
|
int64_t Val = Memory.OffsetImm->getValue();
|
|
return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
|
|
}
|
|
bool isConstPoolAsmImm() const {
|
|
// Delay processing of Constant Pool Immediate, this will turn into
|
|
// a constant. Match no other operand
|
|
return (isConstantPoolImm());
|
|
}
|
|
bool isPostIdxImm8() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Val = CE->getValue();
|
|
return (Val > -256 && Val < 256) || (Val == INT32_MIN);
|
|
}
|
|
bool isPostIdxImm8s4() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (!CE) return false;
|
|
int64_t Val = CE->getValue();
|
|
return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
|
|
(Val == INT32_MIN);
|
|
}
|
|
|
|
bool isMSRMask() const { return Kind == k_MSRMask; }
|
|
bool isBankedReg() const { return Kind == k_BankedReg; }
|
|
bool isProcIFlags() const { return Kind == k_ProcIFlags; }
|
|
|
|
// NEON operands.
|
|
bool isSingleSpacedVectorList() const {
|
|
return Kind == k_VectorList && !VectorList.isDoubleSpaced;
|
|
}
|
|
bool isDoubleSpacedVectorList() const {
|
|
return Kind == k_VectorList && VectorList.isDoubleSpaced;
|
|
}
|
|
bool isVecListOneD() const {
|
|
if (!isSingleSpacedVectorList()) return false;
|
|
return VectorList.Count == 1;
|
|
}
|
|
|
|
bool isVecListDPair() const {
|
|
if (!isSingleSpacedVectorList()) return false;
|
|
return (ARMMCRegisterClasses[ARM::DPairRegClassID]
|
|
.contains(VectorList.RegNum));
|
|
}
|
|
|
|
bool isVecListThreeD() const {
|
|
if (!isSingleSpacedVectorList()) return false;
|
|
return VectorList.Count == 3;
|
|
}
|
|
|
|
bool isVecListFourD() const {
|
|
if (!isSingleSpacedVectorList()) return false;
|
|
return VectorList.Count == 4;
|
|
}
|
|
|
|
bool isVecListDPairSpaced() const {
|
|
if (Kind != k_VectorList) return false;
|
|
if (isSingleSpacedVectorList()) return false;
|
|
return (ARMMCRegisterClasses[ARM::DPairSpcRegClassID]
|
|
.contains(VectorList.RegNum));
|
|
}
|
|
|
|
bool isVecListThreeQ() const {
|
|
if (!isDoubleSpacedVectorList()) return false;
|
|
return VectorList.Count == 3;
|
|
}
|
|
|
|
bool isVecListFourQ() const {
|
|
if (!isDoubleSpacedVectorList()) return false;
|
|
return VectorList.Count == 4;
|
|
}
|
|
|
|
bool isSingleSpacedVectorAllLanes() const {
|
|
return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
|
|
}
|
|
bool isDoubleSpacedVectorAllLanes() const {
|
|
return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
|
|
}
|
|
bool isVecListOneDAllLanes() const {
|
|
if (!isSingleSpacedVectorAllLanes()) return false;
|
|
return VectorList.Count == 1;
|
|
}
|
|
|
|
bool isVecListDPairAllLanes() const {
|
|
if (!isSingleSpacedVectorAllLanes()) return false;
|
|
return (ARMMCRegisterClasses[ARM::DPairRegClassID]
|
|
.contains(VectorList.RegNum));
|
|
}
|
|
|
|
bool isVecListDPairSpacedAllLanes() const {
|
|
if (!isDoubleSpacedVectorAllLanes()) return false;
|
|
return VectorList.Count == 2;
|
|
}
|
|
|
|
bool isVecListThreeDAllLanes() const {
|
|
if (!isSingleSpacedVectorAllLanes()) return false;
|
|
return VectorList.Count == 3;
|
|
}
|
|
|
|
bool isVecListThreeQAllLanes() const {
|
|
if (!isDoubleSpacedVectorAllLanes()) return false;
|
|
return VectorList.Count == 3;
|
|
}
|
|
|
|
bool isVecListFourDAllLanes() const {
|
|
if (!isSingleSpacedVectorAllLanes()) return false;
|
|
return VectorList.Count == 4;
|
|
}
|
|
|
|
bool isVecListFourQAllLanes() const {
|
|
if (!isDoubleSpacedVectorAllLanes()) return false;
|
|
return VectorList.Count == 4;
|
|
}
|
|
|
|
bool isSingleSpacedVectorIndexed() const {
|
|
return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
|
|
}
|
|
bool isDoubleSpacedVectorIndexed() const {
|
|
return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
|
|
}
|
|
bool isVecListOneDByteIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
|
|
}
|
|
|
|
bool isVecListOneDHWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListOneDWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVecListTwoDByteIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
|
|
}
|
|
|
|
bool isVecListTwoDHWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListTwoQWordIndexed() const {
|
|
if (!isDoubleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVecListTwoQHWordIndexed() const {
|
|
if (!isDoubleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListTwoDWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVecListThreeDByteIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 3 && VectorList.LaneIndex <= 7;
|
|
}
|
|
|
|
bool isVecListThreeDHWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListThreeQWordIndexed() const {
|
|
if (!isDoubleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVecListThreeQHWordIndexed() const {
|
|
if (!isDoubleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListThreeDWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVecListFourDByteIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 4 && VectorList.LaneIndex <= 7;
|
|
}
|
|
|
|
bool isVecListFourDHWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListFourQWordIndexed() const {
|
|
if (!isDoubleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVecListFourQHWordIndexed() const {
|
|
if (!isDoubleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
|
|
}
|
|
|
|
bool isVecListFourDWordIndexed() const {
|
|
if (!isSingleSpacedVectorIndexed()) return false;
|
|
return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
|
|
}
|
|
|
|
bool isVectorIndex8() const {
|
|
if (Kind != k_VectorIndex) return false;
|
|
return VectorIndex.Val < 8;
|
|
}
|
|
bool isVectorIndex16() const {
|
|
if (Kind != k_VectorIndex) return false;
|
|
return VectorIndex.Val < 4;
|
|
}
|
|
bool isVectorIndex32() const {
|
|
if (Kind != k_VectorIndex) return false;
|
|
return VectorIndex.Val < 2;
|
|
}
|
|
|
|
bool isNEONi8splat() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
int64_t Value = CE->getValue();
|
|
// i8 value splatted across 8 bytes. The immediate is just the 8 byte
|
|
// value.
|
|
return Value >= 0 && Value < 256;
|
|
}
|
|
|
|
bool isNEONi16splat() const {
|
|
if (isNEONByteReplicate(2))
|
|
return false; // Leave that for bytes replication and forbid by default.
|
|
if (!isImm())
|
|
return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
unsigned Value = CE->getValue();
|
|
return ARM_AM::isNEONi16splat(Value);
|
|
}
|
|
|
|
bool isNEONi16splatNot() const {
|
|
if (!isImm())
|
|
return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
unsigned Value = CE->getValue();
|
|
return ARM_AM::isNEONi16splat(~Value & 0xffff);
|
|
}
|
|
|
|
bool isNEONi32splat() const {
|
|
if (isNEONByteReplicate(4))
|
|
return false; // Leave that for bytes replication and forbid by default.
|
|
if (!isImm())
|
|
return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
unsigned Value = CE->getValue();
|
|
return ARM_AM::isNEONi32splat(Value);
|
|
}
|
|
|
|
bool isNEONi32splatNot() const {
|
|
if (!isImm())
|
|
return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
unsigned Value = CE->getValue();
|
|
return ARM_AM::isNEONi32splat(~Value);
|
|
}
|
|
|
|
bool isNEONByteReplicate(unsigned NumBytes) const {
|
|
if (!isImm())
|
|
return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE)
|
|
return false;
|
|
int64_t Value = CE->getValue();
|
|
if (!Value)
|
|
return false; // Don't bother with zero.
|
|
|
|
unsigned char B = Value & 0xff;
|
|
for (unsigned i = 1; i < NumBytes; ++i) {
|
|
Value >>= 8;
|
|
if ((Value & 0xff) != B)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
bool isNEONi16ByteReplicate() const { return isNEONByteReplicate(2); }
|
|
bool isNEONi32ByteReplicate() const { return isNEONByteReplicate(4); }
|
|
bool isNEONi32vmov() const {
|
|
if (isNEONByteReplicate(4))
|
|
return false; // Let it to be classified as byte-replicate case.
|
|
if (!isImm())
|
|
return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE)
|
|
return false;
|
|
int64_t Value = CE->getValue();
|
|
// i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
|
|
// for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
|
|
// FIXME: This is probably wrong and a copy and paste from previous example
|
|
return (Value >= 0 && Value < 256) ||
|
|
(Value >= 0x0100 && Value <= 0xff00) ||
|
|
(Value >= 0x010000 && Value <= 0xff0000) ||
|
|
(Value >= 0x01000000 && Value <= 0xff000000) ||
|
|
(Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
|
|
(Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
|
|
}
|
|
bool isNEONi32vmovNeg() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
int64_t Value = ~CE->getValue();
|
|
// i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
|
|
// for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
|
|
// FIXME: This is probably wrong and a copy and paste from previous example
|
|
return (Value >= 0 && Value < 256) ||
|
|
(Value >= 0x0100 && Value <= 0xff00) ||
|
|
(Value >= 0x010000 && Value <= 0xff0000) ||
|
|
(Value >= 0x01000000 && Value <= 0xff000000) ||
|
|
(Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
|
|
(Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
|
|
}
|
|
|
|
bool isNEONi64splat() const {
|
|
if (!isImm()) return false;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
// Must be a constant.
|
|
if (!CE) return false;
|
|
uint64_t Value = CE->getValue();
|
|
// i64 value with each byte being either 0 or 0xff.
|
|
for (unsigned i = 0; i < 8; ++i)
|
|
if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
|
|
return true;
|
|
}
|
|
|
|
void addExpr(MCInst &Inst, const MCExpr *Expr) const {
|
|
// Add as immediates when possible. Null MCExpr = 0.
|
|
if (!Expr)
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue()));
|
|
else
|
|
Inst.addOperand(MCOperand::createExpr(Expr));
|
|
}
|
|
|
|
void addCondCodeOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getCondCode())));
|
|
unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
|
|
Inst.addOperand(MCOperand::createReg(RegNum));
|
|
}
|
|
|
|
void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(getCoproc()));
|
|
}
|
|
|
|
void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(getCoproc()));
|
|
}
|
|
|
|
void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(CoprocOption.Val));
|
|
}
|
|
|
|
void addITMaskOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(ITMask.Mask));
|
|
}
|
|
|
|
void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getCondCode())));
|
|
}
|
|
|
|
void addCCOutOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(getReg()));
|
|
}
|
|
|
|
void addRegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(getReg()));
|
|
}
|
|
|
|
void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 3 && "Invalid number of operands!");
|
|
assert(isRegShiftedReg() &&
|
|
"addRegShiftedRegOperands() on non-RegShiftedReg!");
|
|
Inst.addOperand(MCOperand::createReg(RegShiftedReg.SrcReg));
|
|
Inst.addOperand(MCOperand::createReg(RegShiftedReg.ShiftReg));
|
|
Inst.addOperand(MCOperand::createImm(
|
|
ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
|
|
}
|
|
|
|
void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
assert(isRegShiftedImm() &&
|
|
"addRegShiftedImmOperands() on non-RegShiftedImm!");
|
|
Inst.addOperand(MCOperand::createReg(RegShiftedImm.SrcReg));
|
|
// Shift of #32 is encoded as 0 where permitted
|
|
unsigned Imm = (RegShiftedImm.ShiftImm == 32 ? 0 : RegShiftedImm.ShiftImm);
|
|
Inst.addOperand(MCOperand::createImm(
|
|
ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, Imm)));
|
|
}
|
|
|
|
void addShifterImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm((ShifterImm.isASR << 5) |
|
|
ShifterImm.Imm));
|
|
}
|
|
|
|
void addRegListOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const SmallVectorImpl<unsigned> &RegList = getRegList();
|
|
for (SmallVectorImpl<unsigned>::const_iterator
|
|
I = RegList.begin(), E = RegList.end(); I != E; ++I)
|
|
Inst.addOperand(MCOperand::createReg(*I));
|
|
}
|
|
|
|
void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
|
|
addRegListOperands(Inst, N);
|
|
}
|
|
|
|
void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
|
|
addRegListOperands(Inst, N);
|
|
}
|
|
|
|
void addRotImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// Encoded as val>>3. The printer handles display as 8, 16, 24.
|
|
Inst.addOperand(MCOperand::createImm(RotImm.Imm >> 3));
|
|
}
|
|
|
|
void addModImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
|
|
// Support for fixups (MCFixup)
|
|
if (isImm())
|
|
return addImmOperands(Inst, N);
|
|
|
|
Inst.addOperand(MCOperand::createImm(ModImm.Bits | (ModImm.Rot << 7)));
|
|
}
|
|
|
|
void addModImmNotOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
uint32_t Enc = ARM_AM::getSOImmVal(~CE->getValue());
|
|
Inst.addOperand(MCOperand::createImm(Enc));
|
|
}
|
|
|
|
void addModImmNegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
uint32_t Enc = ARM_AM::getSOImmVal(-CE->getValue());
|
|
Inst.addOperand(MCOperand::createImm(Enc));
|
|
}
|
|
|
|
void addBitfieldOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// Munge the lsb/width into a bitfield mask.
|
|
unsigned lsb = Bitfield.LSB;
|
|
unsigned width = Bitfield.Width;
|
|
// Make a 32-bit mask w/ the referenced bits clear and all other bits set.
|
|
uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
|
|
(32 - (lsb + width)));
|
|
Inst.addOperand(MCOperand::createImm(Mask));
|
|
}
|
|
|
|
void addImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
addExpr(Inst, getImm());
|
|
}
|
|
|
|
void addFBits16Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(16 - CE->getValue()));
|
|
}
|
|
|
|
void addFBits32Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(32 - CE->getValue()));
|
|
}
|
|
|
|
void addFPImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addImm8s4Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// FIXME: We really want to scale the value here, but the LDRD/STRD
|
|
// instruction don't encode operands that way yet.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue()));
|
|
}
|
|
|
|
void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate is scaled by four in the encoding and is stored
|
|
// in the MCInst as such. Lop off the low two bits here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue() / 4));
|
|
}
|
|
|
|
void addImm0_508s4NegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate is scaled by four in the encoding and is stored
|
|
// in the MCInst as such. Lop off the low two bits here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(-(CE->getValue() / 4)));
|
|
}
|
|
|
|
void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate is scaled by four in the encoding and is stored
|
|
// in the MCInst as such. Lop off the low two bits here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue() / 4));
|
|
}
|
|
|
|
void addImm1_16Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The constant encodes as the immediate-1, and we store in the instruction
|
|
// the bits as encoded, so subtract off one here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue() - 1));
|
|
}
|
|
|
|
void addImm1_32Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The constant encodes as the immediate-1, and we store in the instruction
|
|
// the bits as encoded, so subtract off one here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue() - 1));
|
|
}
|
|
|
|
void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The constant encodes as the immediate, except for 32, which encodes as
|
|
// zero.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Imm = CE->getValue();
|
|
Inst.addOperand(MCOperand::createImm((Imm == 32 ? 0 : Imm)));
|
|
}
|
|
|
|
void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// An ASR value of 32 encodes as 0, so that's how we want to add it to
|
|
// the instruction as well.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
int Val = CE->getValue();
|
|
Inst.addOperand(MCOperand::createImm(Val == 32 ? 0 : Val));
|
|
}
|
|
|
|
void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The operand is actually a t2_so_imm, but we have its bitwise
|
|
// negation in the assembly source, so twiddle it here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(~CE->getValue()));
|
|
}
|
|
|
|
void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The operand is actually a t2_so_imm, but we have its
|
|
// negation in the assembly source, so twiddle it here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(-CE->getValue()));
|
|
}
|
|
|
|
void addImm0_4095NegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The operand is actually an imm0_4095, but we have its
|
|
// negation in the assembly source, so twiddle it here.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(-CE->getValue()));
|
|
}
|
|
|
|
void addUnsignedOffset_b8s2Operands(MCInst &Inst, unsigned N) const {
|
|
if(const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) {
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue() >> 2));
|
|
return;
|
|
}
|
|
|
|
const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
|
|
assert(SR && "Unknown value type!");
|
|
Inst.addOperand(MCOperand::createExpr(SR));
|
|
}
|
|
|
|
void addThumbMemPCOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
if (isImm()) {
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
if (CE) {
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue()));
|
|
return;
|
|
}
|
|
|
|
const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
|
|
|
|
assert(SR && "Unknown value type!");
|
|
Inst.addOperand(MCOperand::createExpr(SR));
|
|
return;
|
|
}
|
|
|
|
assert(isMem() && "Unknown value type!");
|
|
assert(isa<MCConstantExpr>(Memory.OffsetImm) && "Unknown value type!");
|
|
Inst.addOperand(MCOperand::createImm(Memory.OffsetImm->getValue()));
|
|
}
|
|
|
|
void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getMemBarrierOpt())));
|
|
}
|
|
|
|
void addInstSyncBarrierOptOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getInstSyncBarrierOpt())));
|
|
}
|
|
|
|
void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
}
|
|
|
|
void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
int32_t Imm = Memory.OffsetImm->getValue();
|
|
Inst.addOperand(MCOperand::createImm(Imm));
|
|
}
|
|
|
|
void addAdrLabelOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
assert(isImm() && "Not an immediate!");
|
|
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup.
|
|
if (!isa<MCConstantExpr>(getImm())) {
|
|
Inst.addOperand(MCOperand::createExpr(getImm()));
|
|
return;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
int Val = CE->getValue();
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Memory.Alignment));
|
|
}
|
|
|
|
void addDupAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAlignedMemory16Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addDupAlignedMemory16Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAlignedMemory32Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addDupAlignedMemory32Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAlignedMemory64Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addDupAlignedMemory64Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addDupAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAlignedMemory64or128or256Operands(MCInst &Inst, unsigned N) const {
|
|
addAlignedMemoryOperands(Inst, N);
|
|
}
|
|
|
|
void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 3 && "Invalid number of operands!");
|
|
int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
|
|
if (!Memory.OffsetRegNum) {
|
|
ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
|
|
// Special case for #-0
|
|
if (Val == INT32_MIN) Val = 0;
|
|
if (Val < 0) Val = -Val;
|
|
Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
|
|
} else {
|
|
// For register offset, we encode the shift type and negation flag
|
|
// here.
|
|
Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
|
|
Memory.ShiftImm, Memory.ShiftType);
|
|
}
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
assert(CE && "non-constant AM2OffsetImm operand!");
|
|
int32_t Val = CE->getValue();
|
|
ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
|
|
// Special case for #-0
|
|
if (Val == INT32_MIN) Val = 0;
|
|
if (Val < 0) Val = -Val;
|
|
Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
|
|
Inst.addOperand(MCOperand::createReg(0));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 3 && "Invalid number of operands!");
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm()) {
|
|
Inst.addOperand(MCOperand::createExpr(getImm()));
|
|
Inst.addOperand(MCOperand::createReg(0));
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
return;
|
|
}
|
|
|
|
int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
|
|
if (!Memory.OffsetRegNum) {
|
|
ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
|
|
// Special case for #-0
|
|
if (Val == INT32_MIN) Val = 0;
|
|
if (Val < 0) Val = -Val;
|
|
Val = ARM_AM::getAM3Opc(AddSub, Val);
|
|
} else {
|
|
// For register offset, we encode the shift type and negation flag
|
|
// here.
|
|
Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
|
|
}
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
if (Kind == k_PostIndexRegister) {
|
|
int32_t Val =
|
|
ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
|
|
Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
return;
|
|
}
|
|
|
|
// Constant offset.
|
|
const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
|
|
int32_t Val = CE->getValue();
|
|
ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
|
|
// Special case for #-0
|
|
if (Val == INT32_MIN) Val = 0;
|
|
if (Val < 0) Val = -Val;
|
|
Val = ARM_AM::getAM3Opc(AddSub, Val);
|
|
Inst.addOperand(MCOperand::createReg(0));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm()) {
|
|
Inst.addOperand(MCOperand::createExpr(getImm()));
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
return;
|
|
}
|
|
|
|
// The lower two bits are always zero and as such are not encoded.
|
|
int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
|
|
ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
|
|
// Special case for #-0
|
|
if (Val == INT32_MIN) Val = 0;
|
|
if (Val < 0) Val = -Val;
|
|
Val = ARM_AM::getAM5Opc(AddSub, Val);
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addAddrMode5FP16Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm()) {
|
|
Inst.addOperand(MCOperand::createExpr(getImm()));
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
return;
|
|
}
|
|
|
|
// The lower bit is always zero and as such is not encoded.
|
|
int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 2 : 0;
|
|
ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
|
|
// Special case for #-0
|
|
if (Val == INT32_MIN) Val = 0;
|
|
if (Val < 0) Val = -Val;
|
|
Val = ARM_AM::getAM5FP16Opc(AddSub, Val);
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
// If we have an immediate that's not a constant, treat it as a label
|
|
// reference needing a fixup. If it is a constant, it's something else
|
|
// and we reject it.
|
|
if (isImm()) {
|
|
Inst.addOperand(MCOperand::createExpr(getImm()));
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
return;
|
|
}
|
|
|
|
int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
// The lower two bits are always zero and as such are not encoded.
|
|
int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
addMemImm8OffsetOperands(Inst, N);
|
|
}
|
|
|
|
void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
addMemImm8OffsetOperands(Inst, N);
|
|
}
|
|
|
|
void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
// If this is an immediate, it's a label reference.
|
|
if (isImm()) {
|
|
addExpr(Inst, getImm());
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
return;
|
|
}
|
|
|
|
// Otherwise, it's a normal memory reg+offset.
|
|
int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
// If this is an immediate, it's a label reference.
|
|
if (isImm()) {
|
|
addExpr(Inst, getImm());
|
|
Inst.addOperand(MCOperand::createImm(0));
|
|
return;
|
|
}
|
|
|
|
// Otherwise, it's a normal memory reg+offset.
|
|
int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addConstPoolAsmImmOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// This is container for the immediate that we will create the constant
|
|
// pool from
|
|
addExpr(Inst, getConstantPoolImm());
|
|
return;
|
|
}
|
|
|
|
void addMemTBBOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
}
|
|
|
|
void addMemTBHOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
}
|
|
|
|
void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 3 && "Invalid number of operands!");
|
|
unsigned Val =
|
|
ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
|
|
Memory.ShiftImm, Memory.ShiftType);
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 3 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Memory.ShiftImm));
|
|
}
|
|
|
|
void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
|
|
}
|
|
|
|
void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
|
|
Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
|
|
Inst.addOperand(MCOperand::createImm(Val));
|
|
}
|
|
|
|
void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
assert(CE && "non-constant post-idx-imm8 operand!");
|
|
int Imm = CE->getValue();
|
|
bool isAdd = Imm >= 0;
|
|
if (Imm == INT32_MIN) Imm = 0;
|
|
Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
|
|
Inst.addOperand(MCOperand::createImm(Imm));
|
|
}
|
|
|
|
void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
assert(CE && "non-constant post-idx-imm8s4 operand!");
|
|
int Imm = CE->getValue();
|
|
bool isAdd = Imm >= 0;
|
|
if (Imm == INT32_MIN) Imm = 0;
|
|
// Immediate is scaled by 4.
|
|
Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
|
|
Inst.addOperand(MCOperand::createImm(Imm));
|
|
}
|
|
|
|
void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum));
|
|
Inst.addOperand(MCOperand::createImm(PostIdxReg.isAdd));
|
|
}
|
|
|
|
void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum));
|
|
// The sign, shift type, and shift amount are encoded in a single operand
|
|
// using the AM2 encoding helpers.
|
|
ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
|
|
unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
|
|
PostIdxReg.ShiftTy);
|
|
Inst.addOperand(MCOperand::createImm(Imm));
|
|
}
|
|
|
|
void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getMSRMask())));
|
|
}
|
|
|
|
void addBankedRegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getBankedReg())));
|
|
}
|
|
|
|
void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(unsigned(getProcIFlags())));
|
|
}
|
|
|
|
void addVecListOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(VectorList.RegNum));
|
|
}
|
|
|
|
void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 2 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createReg(VectorList.RegNum));
|
|
Inst.addOperand(MCOperand::createImm(VectorList.LaneIndex));
|
|
}
|
|
|
|
void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(getVectorIndex()));
|
|
}
|
|
|
|
void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(getVectorIndex()));
|
|
}
|
|
|
|
void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
Inst.addOperand(MCOperand::createImm(getVectorIndex()));
|
|
}
|
|
|
|
void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
// Mask in that this is an i8 splat.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
Inst.addOperand(MCOperand::createImm(CE->getValue() | 0xe00));
|
|
}
|
|
|
|
void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
Value = ARM_AM::encodeNEONi16splat(Value);
|
|
Inst.addOperand(MCOperand::createImm(Value));
|
|
}
|
|
|
|
void addNEONi16splatNotOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
Value = ARM_AM::encodeNEONi16splat(~Value & 0xffff);
|
|
Inst.addOperand(MCOperand::createImm(Value));
|
|
}
|
|
|
|
void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
Value = ARM_AM::encodeNEONi32splat(Value);
|
|
Inst.addOperand(MCOperand::createImm(Value));
|
|
}
|
|
|
|
void addNEONi32splatNotOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
Value = ARM_AM::encodeNEONi32splat(~Value);
|
|
Inst.addOperand(MCOperand::createImm(Value));
|
|
}
|
|
|
|
void addNEONinvByteReplicateOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
assert((Inst.getOpcode() == ARM::VMOVv8i8 ||
|
|
Inst.getOpcode() == ARM::VMOVv16i8) &&
|
|
"All vmvn instructions that wants to replicate non-zero byte "
|
|
"always must be replaced with VMOVv8i8 or VMOVv16i8.");
|
|
unsigned B = ((~Value) & 0xff);
|
|
B |= 0xe00; // cmode = 0b1110
|
|
Inst.addOperand(MCOperand::createImm(B));
|
|
}
|
|
void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
if (Value >= 256 && Value <= 0xffff)
|
|
Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
|
|
else if (Value > 0xffff && Value <= 0xffffff)
|
|
Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
|
|
else if (Value > 0xffffff)
|
|
Value = (Value >> 24) | 0x600;
|
|
Inst.addOperand(MCOperand::createImm(Value));
|
|
}
|
|
|
|
void addNEONvmovByteReplicateOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = CE->getValue();
|
|
assert((Inst.getOpcode() == ARM::VMOVv8i8 ||
|
|
Inst.getOpcode() == ARM::VMOVv16i8) &&
|
|
"All instructions that wants to replicate non-zero byte "
|
|
"always must be replaced with VMOVv8i8 or VMOVv16i8.");
|
|
unsigned B = Value & 0xff;
|
|
B |= 0xe00; // cmode = 0b1110
|
|
Inst.addOperand(MCOperand::createImm(B));
|
|
}
|
|
void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
unsigned Value = ~CE->getValue();
|
|
if (Value >= 256 && Value <= 0xffff)
|
|
Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
|
|
else if (Value > 0xffff && Value <= 0xffffff)
|
|
Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
|
|
else if (Value > 0xffffff)
|
|
Value = (Value >> 24) | 0x600;
|
|
Inst.addOperand(MCOperand::createImm(Value));
|
|
}
|
|
|
|
void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
|
|
assert(N == 1 && "Invalid number of operands!");
|
|
// The immediate encodes the type of constant as well as the value.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
|
|
uint64_t Value = CE->getValue();
|
|
unsigned Imm = 0;
|
|
for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
|
|
Imm |= (Value & 1) << i;
|
|
}
|
|
Inst.addOperand(MCOperand::createImm(Imm | 0x1e00));
|
|
}
|
|
|
|
void print(raw_ostream &OS) const override;
|
|
|
|
static std::unique_ptr<ARMOperand> CreateITMask(unsigned Mask, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_ITCondMask);
|
|
Op->ITMask.Mask = Mask;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateCondCode(ARMCC::CondCodes CC,
|
|
SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_CondCode);
|
|
Op->CC.Val = CC;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateCoprocNum(unsigned CopVal, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_CoprocNum);
|
|
Op->Cop.Val = CopVal;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateCoprocReg(unsigned CopVal, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_CoprocReg);
|
|
Op->Cop.Val = CopVal;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateCoprocOption(unsigned Val, SMLoc S,
|
|
SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_CoprocOption);
|
|
Op->Cop.Val = Val;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateCCOut(unsigned RegNum, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_CCOut);
|
|
Op->Reg.RegNum = RegNum;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateToken(StringRef Str, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_Token);
|
|
Op->Tok.Data = Str.data();
|
|
Op->Tok.Length = Str.size();
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateReg(unsigned RegNum, SMLoc S,
|
|
SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_Register);
|
|
Op->Reg.RegNum = RegNum;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateShiftedRegister(ARM_AM::ShiftOpc ShTy, unsigned SrcReg,
|
|
unsigned ShiftReg, unsigned ShiftImm, SMLoc S,
|
|
SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_ShiftedRegister);
|
|
Op->RegShiftedReg.ShiftTy = ShTy;
|
|
Op->RegShiftedReg.SrcReg = SrcReg;
|
|
Op->RegShiftedReg.ShiftReg = ShiftReg;
|
|
Op->RegShiftedReg.ShiftImm = ShiftImm;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy, unsigned SrcReg,
|
|
unsigned ShiftImm, SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_ShiftedImmediate);
|
|
Op->RegShiftedImm.ShiftTy = ShTy;
|
|
Op->RegShiftedImm.SrcReg = SrcReg;
|
|
Op->RegShiftedImm.ShiftImm = ShiftImm;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateShifterImm(bool isASR, unsigned Imm,
|
|
SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_ShifterImmediate);
|
|
Op->ShifterImm.isASR = isASR;
|
|
Op->ShifterImm.Imm = Imm;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateRotImm(unsigned Imm, SMLoc S,
|
|
SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_RotateImmediate);
|
|
Op->RotImm.Imm = Imm;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateModImm(unsigned Bits, unsigned Rot,
|
|
SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_ModifiedImmediate);
|
|
Op->ModImm.Bits = Bits;
|
|
Op->ModImm.Rot = Rot;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateConstantPoolImm(const MCExpr *Val, SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_ConstantPoolImmediate);
|
|
Op->Imm.Val = Val;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateBitfield(unsigned LSB, unsigned Width, SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_BitfieldDescriptor);
|
|
Op->Bitfield.LSB = LSB;
|
|
Op->Bitfield.Width = Width;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateRegList(SmallVectorImpl<std::pair<unsigned, unsigned>> &Regs,
|
|
SMLoc StartLoc, SMLoc EndLoc) {
|
|
assert (Regs.size() > 0 && "RegList contains no registers?");
|
|
KindTy Kind = k_RegisterList;
|
|
|
|
if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().second))
|
|
Kind = k_DPRRegisterList;
|
|
else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
|
|
contains(Regs.front().second))
|
|
Kind = k_SPRRegisterList;
|
|
|
|
// Sort based on the register encoding values.
|
|
array_pod_sort(Regs.begin(), Regs.end());
|
|
|
|
auto Op = make_unique<ARMOperand>(Kind);
|
|
for (SmallVectorImpl<std::pair<unsigned, unsigned> >::const_iterator
|
|
I = Regs.begin(), E = Regs.end(); I != E; ++I)
|
|
Op->Registers.push_back(I->second);
|
|
Op->StartLoc = StartLoc;
|
|
Op->EndLoc = EndLoc;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateVectorList(unsigned RegNum,
|
|
unsigned Count,
|
|
bool isDoubleSpaced,
|
|
SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_VectorList);
|
|
Op->VectorList.RegNum = RegNum;
|
|
Op->VectorList.Count = Count;
|
|
Op->VectorList.isDoubleSpaced = isDoubleSpaced;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateVectorListAllLanes(unsigned RegNum, unsigned Count, bool isDoubleSpaced,
|
|
SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_VectorListAllLanes);
|
|
Op->VectorList.RegNum = RegNum;
|
|
Op->VectorList.Count = Count;
|
|
Op->VectorList.isDoubleSpaced = isDoubleSpaced;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateVectorListIndexed(unsigned RegNum, unsigned Count, unsigned Index,
|
|
bool isDoubleSpaced, SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_VectorListIndexed);
|
|
Op->VectorList.RegNum = RegNum;
|
|
Op->VectorList.Count = Count;
|
|
Op->VectorList.LaneIndex = Index;
|
|
Op->VectorList.isDoubleSpaced = isDoubleSpaced;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E, MCContext &Ctx) {
|
|
auto Op = make_unique<ARMOperand>(k_VectorIndex);
|
|
Op->VectorIndex.Val = Idx;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateImm(const MCExpr *Val, SMLoc S,
|
|
SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_Immediate);
|
|
Op->Imm.Val = Val;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateMem(unsigned BaseRegNum, const MCConstantExpr *OffsetImm,
|
|
unsigned OffsetRegNum, ARM_AM::ShiftOpc ShiftType,
|
|
unsigned ShiftImm, unsigned Alignment, bool isNegative, SMLoc S,
|
|
SMLoc E, SMLoc AlignmentLoc = SMLoc()) {
|
|
auto Op = make_unique<ARMOperand>(k_Memory);
|
|
Op->Memory.BaseRegNum = BaseRegNum;
|
|
Op->Memory.OffsetImm = OffsetImm;
|
|
Op->Memory.OffsetRegNum = OffsetRegNum;
|
|
Op->Memory.ShiftType = ShiftType;
|
|
Op->Memory.ShiftImm = ShiftImm;
|
|
Op->Memory.Alignment = Alignment;
|
|
Op->Memory.isNegative = isNegative;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
Op->AlignmentLoc = AlignmentLoc;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreatePostIdxReg(unsigned RegNum, bool isAdd, ARM_AM::ShiftOpc ShiftTy,
|
|
unsigned ShiftImm, SMLoc S, SMLoc E) {
|
|
auto Op = make_unique<ARMOperand>(k_PostIndexRegister);
|
|
Op->PostIdxReg.RegNum = RegNum;
|
|
Op->PostIdxReg.isAdd = isAdd;
|
|
Op->PostIdxReg.ShiftTy = ShiftTy;
|
|
Op->PostIdxReg.ShiftImm = ShiftImm;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = E;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateMemBarrierOpt(ARM_MB::MemBOpt Opt,
|
|
SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_MemBarrierOpt);
|
|
Op->MBOpt.Val = Opt;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand>
|
|
CreateInstSyncBarrierOpt(ARM_ISB::InstSyncBOpt Opt, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_InstSyncBarrierOpt);
|
|
Op->ISBOpt.Val = Opt;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateProcIFlags(ARM_PROC::IFlags IFlags,
|
|
SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_ProcIFlags);
|
|
Op->IFlags.Val = IFlags;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateMSRMask(unsigned MMask, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_MSRMask);
|
|
Op->MMask.Val = MMask;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
|
|
static std::unique_ptr<ARMOperand> CreateBankedReg(unsigned Reg, SMLoc S) {
|
|
auto Op = make_unique<ARMOperand>(k_BankedReg);
|
|
Op->BankedReg.Val = Reg;
|
|
Op->StartLoc = S;
|
|
Op->EndLoc = S;
|
|
return Op;
|
|
}
|
|
};
|
|
|
|
} // end anonymous namespace.
|
|
|
|
void ARMOperand::print(raw_ostream &OS) const {
|
|
switch (Kind) {
|
|
case k_CondCode:
|
|
OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
|
|
break;
|
|
case k_CCOut:
|
|
OS << "<ccout " << getReg() << ">";
|
|
break;
|
|
case k_ITCondMask: {
|
|
static const char *const MaskStr[] = {
|
|
"()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
|
|
"(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
|
|
};
|
|
assert((ITMask.Mask & 0xf) == ITMask.Mask);
|
|
OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
|
|
break;
|
|
}
|
|
case k_CoprocNum:
|
|
OS << "<coprocessor number: " << getCoproc() << ">";
|
|
break;
|
|
case k_CoprocReg:
|
|
OS << "<coprocessor register: " << getCoproc() << ">";
|
|
break;
|
|
case k_CoprocOption:
|
|
OS << "<coprocessor option: " << CoprocOption.Val << ">";
|
|
break;
|
|
case k_MSRMask:
|
|
OS << "<mask: " << getMSRMask() << ">";
|
|
break;
|
|
case k_BankedReg:
|
|
OS << "<banked reg: " << getBankedReg() << ">";
|
|
break;
|
|
case k_Immediate:
|
|
OS << *getImm();
|
|
break;
|
|
case k_MemBarrierOpt:
|
|
OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt(), false) << ">";
|
|
break;
|
|
case k_InstSyncBarrierOpt:
|
|
OS << "<ARM_ISB::" << InstSyncBOptToString(getInstSyncBarrierOpt()) << ">";
|
|
break;
|
|
case k_Memory:
|
|
OS << "<memory "
|
|
<< " base:" << Memory.BaseRegNum;
|
|
OS << ">";
|
|
break;
|
|
case k_PostIndexRegister:
|
|
OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
|
|
<< PostIdxReg.RegNum;
|
|
if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
|
|
OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
|
|
<< PostIdxReg.ShiftImm;
|
|
OS << ">";
|
|
break;
|
|
case k_ProcIFlags: {
|
|
OS << "<ARM_PROC::";
|
|
unsigned IFlags = getProcIFlags();
|
|
for (int i=2; i >= 0; --i)
|
|
if (IFlags & (1 << i))
|
|
OS << ARM_PROC::IFlagsToString(1 << i);
|
|
OS << ">";
|
|
break;
|
|
}
|
|
case k_Register:
|
|
OS << "<register " << getReg() << ">";
|
|
break;
|
|
case k_ShifterImmediate:
|
|
OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
|
|
<< " #" << ShifterImm.Imm << ">";
|
|
break;
|
|
case k_ShiftedRegister:
|
|
OS << "<so_reg_reg "
|
|
<< RegShiftedReg.SrcReg << " "
|
|
<< ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
|
|
<< " " << RegShiftedReg.ShiftReg << ">";
|
|
break;
|
|
case k_ShiftedImmediate:
|
|
OS << "<so_reg_imm "
|
|
<< RegShiftedImm.SrcReg << " "
|
|
<< ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
|
|
<< " #" << RegShiftedImm.ShiftImm << ">";
|
|
break;
|
|
case k_RotateImmediate:
|
|
OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
|
|
break;
|
|
case k_ModifiedImmediate:
|
|
OS << "<mod_imm #" << ModImm.Bits << ", #"
|
|
<< ModImm.Rot << ")>";
|
|
break;
|
|
case k_ConstantPoolImmediate:
|
|
OS << "<constant_pool_imm #" << *getConstantPoolImm();
|
|
break;
|
|
case k_BitfieldDescriptor:
|
|
OS << "<bitfield " << "lsb: " << Bitfield.LSB
|
|
<< ", width: " << Bitfield.Width << ">";
|
|
break;
|
|
case k_RegisterList:
|
|
case k_DPRRegisterList:
|
|
case k_SPRRegisterList: {
|
|
OS << "<register_list ";
|
|
|
|
const SmallVectorImpl<unsigned> &RegList = getRegList();
|
|
for (SmallVectorImpl<unsigned>::const_iterator
|
|
I = RegList.begin(), E = RegList.end(); I != E; ) {
|
|
OS << *I;
|
|
if (++I < E) OS << ", ";
|
|
}
|
|
|
|
OS << ">";
|
|
break;
|
|
}
|
|
case k_VectorList:
|
|
OS << "<vector_list " << VectorList.Count << " * "
|
|
<< VectorList.RegNum << ">";
|
|
break;
|
|
case k_VectorListAllLanes:
|
|
OS << "<vector_list(all lanes) " << VectorList.Count << " * "
|
|
<< VectorList.RegNum << ">";
|
|
break;
|
|
case k_VectorListIndexed:
|
|
OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
|
|
<< VectorList.Count << " * " << VectorList.RegNum << ">";
|
|
break;
|
|
case k_Token:
|
|
OS << "'" << getToken() << "'";
|
|
break;
|
|
case k_VectorIndex:
|
|
OS << "<vectorindex " << getVectorIndex() << ">";
|
|
break;
|
|
}
|
|
}
|
|
|
|
/// @name Auto-generated Match Functions
|
|
/// {
|
|
|
|
static unsigned MatchRegisterName(StringRef Name);
|
|
|
|
/// }
|
|
|
|
bool ARMAsmParser::ParseRegister(unsigned &RegNo,
|
|
SMLoc &StartLoc, SMLoc &EndLoc) {
|
|
const AsmToken &Tok = getParser().getTok();
|
|
StartLoc = Tok.getLoc();
|
|
EndLoc = Tok.getEndLoc();
|
|
RegNo = tryParseRegister();
|
|
|
|
return (RegNo == (unsigned)-1);
|
|
}
|
|
|
|
/// Try to parse a register name. The token must be an Identifier when called,
|
|
/// and if it is a register name the token is eaten and the register number is
|
|
/// returned. Otherwise return -1.
|
|
///
|
|
int ARMAsmParser::tryParseRegister() {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier)) return -1;
|
|
|
|
std::string lowerCase = Tok.getString().lower();
|
|
unsigned RegNum = MatchRegisterName(lowerCase);
|
|
if (!RegNum) {
|
|
RegNum = StringSwitch<unsigned>(lowerCase)
|
|
.Case("r13", ARM::SP)
|
|
.Case("r14", ARM::LR)
|
|
.Case("r15", ARM::PC)
|
|
.Case("ip", ARM::R12)
|
|
// Additional register name aliases for 'gas' compatibility.
|
|
.Case("a1", ARM::R0)
|
|
.Case("a2", ARM::R1)
|
|
.Case("a3", ARM::R2)
|
|
.Case("a4", ARM::R3)
|
|
.Case("v1", ARM::R4)
|
|
.Case("v2", ARM::R5)
|
|
.Case("v3", ARM::R6)
|
|
.Case("v4", ARM::R7)
|
|
.Case("v5", ARM::R8)
|
|
.Case("v6", ARM::R9)
|
|
.Case("v7", ARM::R10)
|
|
.Case("v8", ARM::R11)
|
|
.Case("sb", ARM::R9)
|
|
.Case("sl", ARM::R10)
|
|
.Case("fp", ARM::R11)
|
|
.Default(0);
|
|
}
|
|
if (!RegNum) {
|
|
// Check for aliases registered via .req. Canonicalize to lower case.
|
|
// That's more consistent since register names are case insensitive, and
|
|
// it's how the original entry was passed in from MC/MCParser/AsmParser.
|
|
StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
|
|
// If no match, return failure.
|
|
if (Entry == RegisterReqs.end())
|
|
return -1;
|
|
Parser.Lex(); // Eat identifier token.
|
|
return Entry->getValue();
|
|
}
|
|
|
|
// Some FPUs only have 16 D registers, so D16-D31 are invalid
|
|
if (hasD16() && RegNum >= ARM::D16 && RegNum <= ARM::D31)
|
|
return -1;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
|
|
return RegNum;
|
|
}
|
|
|
|
// Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
|
|
// If a recoverable error occurs, return 1. If an irrecoverable error
|
|
// occurs, return -1. An irrecoverable error is one where tokens have been
|
|
// consumed in the process of trying to parse the shifter (i.e., when it is
|
|
// indeed a shifter operand, but malformed).
|
|
int ARMAsmParser::tryParseShiftRegister(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier))
|
|
return -1;
|
|
|
|
std::string lowerCase = Tok.getString().lower();
|
|
ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
|
|
.Case("asl", ARM_AM::lsl)
|
|
.Case("lsl", ARM_AM::lsl)
|
|
.Case("lsr", ARM_AM::lsr)
|
|
.Case("asr", ARM_AM::asr)
|
|
.Case("ror", ARM_AM::ror)
|
|
.Case("rrx", ARM_AM::rrx)
|
|
.Default(ARM_AM::no_shift);
|
|
|
|
if (ShiftTy == ARM_AM::no_shift)
|
|
return 1;
|
|
|
|
Parser.Lex(); // Eat the operator.
|
|
|
|
// The source register for the shift has already been added to the
|
|
// operand list, so we need to pop it off and combine it into the shifted
|
|
// register operand instead.
|
|
std::unique_ptr<ARMOperand> PrevOp(
|
|
(ARMOperand *)Operands.pop_back_val().release());
|
|
if (!PrevOp->isReg())
|
|
return Error(PrevOp->getStartLoc(), "shift must be of a register");
|
|
int SrcReg = PrevOp->getReg();
|
|
|
|
SMLoc EndLoc;
|
|
int64_t Imm = 0;
|
|
int ShiftReg = 0;
|
|
if (ShiftTy == ARM_AM::rrx) {
|
|
// RRX Doesn't have an explicit shift amount. The encoder expects
|
|
// the shift register to be the same as the source register. Seems odd,
|
|
// but OK.
|
|
ShiftReg = SrcReg;
|
|
} else {
|
|
// Figure out if this is shifted by a constant or a register (for non-RRX).
|
|
if (Parser.getTok().is(AsmToken::Hash) ||
|
|
Parser.getTok().is(AsmToken::Dollar)) {
|
|
Parser.Lex(); // Eat hash.
|
|
SMLoc ImmLoc = Parser.getTok().getLoc();
|
|
const MCExpr *ShiftExpr = nullptr;
|
|
if (getParser().parseExpression(ShiftExpr, EndLoc)) {
|
|
Error(ImmLoc, "invalid immediate shift value");
|
|
return -1;
|
|
}
|
|
// The expression must be evaluatable as an immediate.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
|
|
if (!CE) {
|
|
Error(ImmLoc, "invalid immediate shift value");
|
|
return -1;
|
|
}
|
|
// Range check the immediate.
|
|
// lsl, ror: 0 <= imm <= 31
|
|
// lsr, asr: 0 <= imm <= 32
|
|
Imm = CE->getValue();
|
|
if (Imm < 0 ||
|
|
((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
|
|
((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
|
|
Error(ImmLoc, "immediate shift value out of range");
|
|
return -1;
|
|
}
|
|
// shift by zero is a nop. Always send it through as lsl.
|
|
// ('as' compatibility)
|
|
if (Imm == 0)
|
|
ShiftTy = ARM_AM::lsl;
|
|
} else if (Parser.getTok().is(AsmToken::Identifier)) {
|
|
SMLoc L = Parser.getTok().getLoc();
|
|
EndLoc = Parser.getTok().getEndLoc();
|
|
ShiftReg = tryParseRegister();
|
|
if (ShiftReg == -1) {
|
|
Error(L, "expected immediate or register in shift operand");
|
|
return -1;
|
|
}
|
|
} else {
|
|
Error(Parser.getTok().getLoc(),
|
|
"expected immediate or register in shift operand");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (ShiftReg && ShiftTy != ARM_AM::rrx)
|
|
Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
|
|
ShiftReg, Imm,
|
|
S, EndLoc));
|
|
else
|
|
Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
|
|
S, EndLoc));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/// Try to parse a register name. The token must be an Identifier when called.
|
|
/// If it's a register, an AsmOperand is created. Another AsmOperand is created
|
|
/// if there is a "writeback". 'true' if it's not a register.
|
|
///
|
|
/// TODO this is likely to change to allow different register types and or to
|
|
/// parse for a specific register type.
|
|
bool ARMAsmParser::tryParseRegisterWithWriteBack(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &RegTok = Parser.getTok();
|
|
int RegNo = tryParseRegister();
|
|
if (RegNo == -1)
|
|
return true;
|
|
|
|
Operands.push_back(ARMOperand::CreateReg(RegNo, RegTok.getLoc(),
|
|
RegTok.getEndLoc()));
|
|
|
|
const AsmToken &ExclaimTok = Parser.getTok();
|
|
if (ExclaimTok.is(AsmToken::Exclaim)) {
|
|
Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
|
|
ExclaimTok.getLoc()));
|
|
Parser.Lex(); // Eat exclaim token
|
|
return false;
|
|
}
|
|
|
|
// Also check for an index operand. This is only legal for vector registers,
|
|
// but that'll get caught OK in operand matching, so we don't need to
|
|
// explicitly filter everything else out here.
|
|
if (Parser.getTok().is(AsmToken::LBrac)) {
|
|
SMLoc SIdx = Parser.getTok().getLoc();
|
|
Parser.Lex(); // Eat left bracket token.
|
|
|
|
const MCExpr *ImmVal;
|
|
if (getParser().parseExpression(ImmVal))
|
|
return true;
|
|
const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
|
|
if (!MCE)
|
|
return TokError("immediate value expected for vector index");
|
|
|
|
if (Parser.getTok().isNot(AsmToken::RBrac))
|
|
return Error(Parser.getTok().getLoc(), "']' expected");
|
|
|
|
SMLoc E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat right bracket token.
|
|
|
|
Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
|
|
SIdx, E,
|
|
getContext()));
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// MatchCoprocessorOperandName - Try to parse an coprocessor related
|
|
/// instruction with a symbolic operand name.
|
|
/// We accept "crN" syntax for GAS compatibility.
|
|
/// <operand-name> ::= <prefix><number>
|
|
/// If CoprocOp is 'c', then:
|
|
/// <prefix> ::= c | cr
|
|
/// If CoprocOp is 'p', then :
|
|
/// <prefix> ::= p
|
|
/// <number> ::= integer in range [0, 15]
|
|
static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
|
|
// Use the same layout as the tablegen'erated register name matcher. Ugly,
|
|
// but efficient.
|
|
if (Name.size() < 2 || Name[0] != CoprocOp)
|
|
return -1;
|
|
Name = (Name[1] == 'r') ? Name.drop_front(2) : Name.drop_front();
|
|
|
|
switch (Name.size()) {
|
|
default: return -1;
|
|
case 1:
|
|
switch (Name[0]) {
|
|
default: return -1;
|
|
case '0': return 0;
|
|
case '1': return 1;
|
|
case '2': return 2;
|
|
case '3': return 3;
|
|
case '4': return 4;
|
|
case '5': return 5;
|
|
case '6': return 6;
|
|
case '7': return 7;
|
|
case '8': return 8;
|
|
case '9': return 9;
|
|
}
|
|
case 2:
|
|
if (Name[0] != '1')
|
|
return -1;
|
|
switch (Name[1]) {
|
|
default: return -1;
|
|
// CP10 and CP11 are VFP/NEON and so vector instructions should be used.
|
|
// However, old cores (v5/v6) did use them in that way.
|
|
case '0': return 10;
|
|
case '1': return 11;
|
|
case '2': return 12;
|
|
case '3': return 13;
|
|
case '4': return 14;
|
|
case '5': return 15;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// parseITCondCode - Try to parse a condition code for an IT instruction.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseITCondCode(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (!Tok.is(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
unsigned CC = StringSwitch<unsigned>(Tok.getString().lower())
|
|
.Case("eq", ARMCC::EQ)
|
|
.Case("ne", ARMCC::NE)
|
|
.Case("hs", ARMCC::HS)
|
|
.Case("cs", ARMCC::HS)
|
|
.Case("lo", ARMCC::LO)
|
|
.Case("cc", ARMCC::LO)
|
|
.Case("mi", ARMCC::MI)
|
|
.Case("pl", ARMCC::PL)
|
|
.Case("vs", ARMCC::VS)
|
|
.Case("vc", ARMCC::VC)
|
|
.Case("hi", ARMCC::HI)
|
|
.Case("ls", ARMCC::LS)
|
|
.Case("ge", ARMCC::GE)
|
|
.Case("lt", ARMCC::LT)
|
|
.Case("gt", ARMCC::GT)
|
|
.Case("le", ARMCC::LE)
|
|
.Case("al", ARMCC::AL)
|
|
.Default(~0U);
|
|
if (CC == ~0U)
|
|
return MatchOperand_NoMatch;
|
|
Parser.Lex(); // Eat the token.
|
|
|
|
Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
|
|
/// token must be an Identifier when called, and if it is a coprocessor
|
|
/// number, the token is eaten and the operand is added to the operand list.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseCoprocNumOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
|
|
int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
|
|
if (Num == -1)
|
|
return MatchOperand_NoMatch;
|
|
// ARMv7 and v8 don't allow cp10/cp11 due to VFP/NEON specific instructions
|
|
if ((hasV7Ops() || hasV8Ops()) && (Num == 10 || Num == 11))
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
|
|
/// token must be an Identifier when called, and if it is a coprocessor
|
|
/// number, the token is eaten and the operand is added to the operand list.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseCoprocRegOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
|
|
int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
|
|
if (Reg == -1)
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
|
|
/// coproc_option : '{' imm0_255 '}'
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseCoprocOptionOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
|
|
// If this isn't a '{', this isn't a coprocessor immediate operand.
|
|
if (Parser.getTok().isNot(AsmToken::LCurly))
|
|
return MatchOperand_NoMatch;
|
|
Parser.Lex(); // Eat the '{'
|
|
|
|
const MCExpr *Expr;
|
|
SMLoc Loc = Parser.getTok().getLoc();
|
|
if (getParser().parseExpression(Expr)) {
|
|
Error(Loc, "illegal expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
|
|
if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
|
|
Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
int Val = CE->getValue();
|
|
|
|
// Check for and consume the closing '}'
|
|
if (Parser.getTok().isNot(AsmToken::RCurly))
|
|
return MatchOperand_ParseFail;
|
|
SMLoc E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat the '}'
|
|
|
|
Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
// For register list parsing, we need to map from raw GPR register numbering
|
|
// to the enumeration values. The enumeration values aren't sorted by
|
|
// register number due to our using "sp", "lr" and "pc" as canonical names.
|
|
static unsigned getNextRegister(unsigned Reg) {
|
|
// If this is a GPR, we need to do it manually, otherwise we can rely
|
|
// on the sort ordering of the enumeration since the other reg-classes
|
|
// are sane.
|
|
if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
|
|
return Reg + 1;
|
|
switch(Reg) {
|
|
default: llvm_unreachable("Invalid GPR number!");
|
|
case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
|
|
case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
|
|
case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
|
|
case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
|
|
case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
|
|
case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
|
|
case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
|
|
case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
|
|
}
|
|
}
|
|
|
|
// Return the low-subreg of a given Q register.
|
|
static unsigned getDRegFromQReg(unsigned QReg) {
|
|
switch (QReg) {
|
|
default: llvm_unreachable("expected a Q register!");
|
|
case ARM::Q0: return ARM::D0;
|
|
case ARM::Q1: return ARM::D2;
|
|
case ARM::Q2: return ARM::D4;
|
|
case ARM::Q3: return ARM::D6;
|
|
case ARM::Q4: return ARM::D8;
|
|
case ARM::Q5: return ARM::D10;
|
|
case ARM::Q6: return ARM::D12;
|
|
case ARM::Q7: return ARM::D14;
|
|
case ARM::Q8: return ARM::D16;
|
|
case ARM::Q9: return ARM::D18;
|
|
case ARM::Q10: return ARM::D20;
|
|
case ARM::Q11: return ARM::D22;
|
|
case ARM::Q12: return ARM::D24;
|
|
case ARM::Q13: return ARM::D26;
|
|
case ARM::Q14: return ARM::D28;
|
|
case ARM::Q15: return ARM::D30;
|
|
}
|
|
}
|
|
|
|
/// Parse a register list.
|
|
bool ARMAsmParser::parseRegisterList(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
assert(Parser.getTok().is(AsmToken::LCurly) &&
|
|
"Token is not a Left Curly Brace");
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
Parser.Lex(); // Eat '{' token.
|
|
SMLoc RegLoc = Parser.getTok().getLoc();
|
|
|
|
// Check the first register in the list to see what register class
|
|
// this is a list of.
|
|
int Reg = tryParseRegister();
|
|
if (Reg == -1)
|
|
return Error(RegLoc, "register expected");
|
|
|
|
// The reglist instructions have at most 16 registers, so reserve
|
|
// space for that many.
|
|
int EReg = 0;
|
|
SmallVector<std::pair<unsigned, unsigned>, 16> Registers;
|
|
|
|
// Allow Q regs and just interpret them as the two D sub-registers.
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
|
|
Reg = getDRegFromQReg(Reg);
|
|
EReg = MRI->getEncodingValue(Reg);
|
|
Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
|
|
++Reg;
|
|
}
|
|
const MCRegisterClass *RC;
|
|
if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
|
|
RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
|
|
else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
|
|
RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
|
|
else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
|
|
RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
|
|
else
|
|
return Error(RegLoc, "invalid register in register list");
|
|
|
|
// Store the register.
|
|
EReg = MRI->getEncodingValue(Reg);
|
|
Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
|
|
|
|
// This starts immediately after the first register token in the list,
|
|
// so we can see either a comma or a minus (range separator) as a legal
|
|
// next token.
|
|
while (Parser.getTok().is(AsmToken::Comma) ||
|
|
Parser.getTok().is(AsmToken::Minus)) {
|
|
if (Parser.getTok().is(AsmToken::Minus)) {
|
|
Parser.Lex(); // Eat the minus.
|
|
SMLoc AfterMinusLoc = Parser.getTok().getLoc();
|
|
int EndReg = tryParseRegister();
|
|
if (EndReg == -1)
|
|
return Error(AfterMinusLoc, "register expected");
|
|
// Allow Q regs and just interpret them as the two D sub-registers.
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
|
|
EndReg = getDRegFromQReg(EndReg) + 1;
|
|
// If the register is the same as the start reg, there's nothing
|
|
// more to do.
|
|
if (Reg == EndReg)
|
|
continue;
|
|
// The register must be in the same register class as the first.
|
|
if (!RC->contains(EndReg))
|
|
return Error(AfterMinusLoc, "invalid register in register list");
|
|
// Ranges must go from low to high.
|
|
if (MRI->getEncodingValue(Reg) > MRI->getEncodingValue(EndReg))
|
|
return Error(AfterMinusLoc, "bad range in register list");
|
|
|
|
// Add all the registers in the range to the register list.
|
|
while (Reg != EndReg) {
|
|
Reg = getNextRegister(Reg);
|
|
EReg = MRI->getEncodingValue(Reg);
|
|
Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
|
|
}
|
|
continue;
|
|
}
|
|
Parser.Lex(); // Eat the comma.
|
|
RegLoc = Parser.getTok().getLoc();
|
|
int OldReg = Reg;
|
|
const AsmToken RegTok = Parser.getTok();
|
|
Reg = tryParseRegister();
|
|
if (Reg == -1)
|
|
return Error(RegLoc, "register expected");
|
|
// Allow Q regs and just interpret them as the two D sub-registers.
|
|
bool isQReg = false;
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
|
|
Reg = getDRegFromQReg(Reg);
|
|
isQReg = true;
|
|
}
|
|
// The register must be in the same register class as the first.
|
|
if (!RC->contains(Reg))
|
|
return Error(RegLoc, "invalid register in register list");
|
|
// List must be monotonically increasing.
|
|
if (MRI->getEncodingValue(Reg) < MRI->getEncodingValue(OldReg)) {
|
|
if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
|
|
Warning(RegLoc, "register list not in ascending order");
|
|
else
|
|
return Error(RegLoc, "register list not in ascending order");
|
|
}
|
|
if (MRI->getEncodingValue(Reg) == MRI->getEncodingValue(OldReg)) {
|
|
Warning(RegLoc, "duplicated register (" + RegTok.getString() +
|
|
") in register list");
|
|
continue;
|
|
}
|
|
// VFP register lists must also be contiguous.
|
|
if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
|
|
Reg != OldReg + 1)
|
|
return Error(RegLoc, "non-contiguous register range");
|
|
EReg = MRI->getEncodingValue(Reg);
|
|
Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
|
|
if (isQReg) {
|
|
EReg = MRI->getEncodingValue(++Reg);
|
|
Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
|
|
}
|
|
}
|
|
|
|
if (Parser.getTok().isNot(AsmToken::RCurly))
|
|
return Error(Parser.getTok().getLoc(), "'}' expected");
|
|
SMLoc E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat '}' token.
|
|
|
|
// Push the register list operand.
|
|
Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
|
|
|
|
// The ARM system instruction variants for LDM/STM have a '^' token here.
|
|
if (Parser.getTok().is(AsmToken::Caret)) {
|
|
Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
|
|
Parser.Lex(); // Eat '^' token.
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// Helper function to parse the lane index for vector lists.
|
|
ARMAsmParser::OperandMatchResultTy ARMAsmParser::
|
|
parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index, SMLoc &EndLoc) {
|
|
MCAsmParser &Parser = getParser();
|
|
Index = 0; // Always return a defined index value.
|
|
if (Parser.getTok().is(AsmToken::LBrac)) {
|
|
Parser.Lex(); // Eat the '['.
|
|
if (Parser.getTok().is(AsmToken::RBrac)) {
|
|
// "Dn[]" is the 'all lanes' syntax.
|
|
LaneKind = AllLanes;
|
|
EndLoc = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat the ']'.
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
// There's an optional '#' token here. Normally there wouldn't be, but
|
|
// inline assemble puts one in, and it's friendly to accept that.
|
|
if (Parser.getTok().is(AsmToken::Hash))
|
|
Parser.Lex(); // Eat '#' or '$'.
|
|
|
|
const MCExpr *LaneIndex;
|
|
SMLoc Loc = Parser.getTok().getLoc();
|
|
if (getParser().parseExpression(LaneIndex)) {
|
|
Error(Loc, "illegal expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
|
|
if (!CE) {
|
|
Error(Loc, "lane index must be empty or an integer");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
if (Parser.getTok().isNot(AsmToken::RBrac)) {
|
|
Error(Parser.getTok().getLoc(), "']' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
EndLoc = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat the ']'.
|
|
int64_t Val = CE->getValue();
|
|
|
|
// FIXME: Make this range check context sensitive for .8, .16, .32.
|
|
if (Val < 0 || Val > 7) {
|
|
Error(Parser.getTok().getLoc(), "lane index out of range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Index = Val;
|
|
LaneKind = IndexedLane;
|
|
return MatchOperand_Success;
|
|
}
|
|
LaneKind = NoLanes;
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
// parse a vector register list
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseVectorList(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
VectorLaneTy LaneKind;
|
|
unsigned LaneIndex;
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
// As an extension (to match gas), support a plain D register or Q register
|
|
// (without encosing curly braces) as a single or double entry list,
|
|
// respectively.
|
|
if (Parser.getTok().is(AsmToken::Identifier)) {
|
|
SMLoc E = Parser.getTok().getEndLoc();
|
|
int Reg = tryParseRegister();
|
|
if (Reg == -1)
|
|
return MatchOperand_NoMatch;
|
|
if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
|
|
OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
|
|
if (Res != MatchOperand_Success)
|
|
return Res;
|
|
switch (LaneKind) {
|
|
case NoLanes:
|
|
Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
|
|
break;
|
|
case AllLanes:
|
|
Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
|
|
S, E));
|
|
break;
|
|
case IndexedLane:
|
|
Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
|
|
LaneIndex,
|
|
false, S, E));
|
|
break;
|
|
}
|
|
return MatchOperand_Success;
|
|
}
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
|
|
Reg = getDRegFromQReg(Reg);
|
|
OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
|
|
if (Res != MatchOperand_Success)
|
|
return Res;
|
|
switch (LaneKind) {
|
|
case NoLanes:
|
|
Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
|
|
&ARMMCRegisterClasses[ARM::DPairRegClassID]);
|
|
Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
|
|
break;
|
|
case AllLanes:
|
|
Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
|
|
&ARMMCRegisterClasses[ARM::DPairRegClassID]);
|
|
Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
|
|
S, E));
|
|
break;
|
|
case IndexedLane:
|
|
Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
|
|
LaneIndex,
|
|
false, S, E));
|
|
break;
|
|
}
|
|
return MatchOperand_Success;
|
|
}
|
|
Error(S, "vector register expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
if (Parser.getTok().isNot(AsmToken::LCurly))
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat '{' token.
|
|
SMLoc RegLoc = Parser.getTok().getLoc();
|
|
|
|
int Reg = tryParseRegister();
|
|
if (Reg == -1) {
|
|
Error(RegLoc, "register expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
unsigned Count = 1;
|
|
int Spacing = 0;
|
|
unsigned FirstReg = Reg;
|
|
// The list is of D registers, but we also allow Q regs and just interpret
|
|
// them as the two D sub-registers.
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
|
|
FirstReg = Reg = getDRegFromQReg(Reg);
|
|
Spacing = 1; // double-spacing requires explicit D registers, otherwise
|
|
// it's ambiguous with four-register single spaced.
|
|
++Reg;
|
|
++Count;
|
|
}
|
|
|
|
SMLoc E;
|
|
if (parseVectorLane(LaneKind, LaneIndex, E) != MatchOperand_Success)
|
|
return MatchOperand_ParseFail;
|
|
|
|
while (Parser.getTok().is(AsmToken::Comma) ||
|
|
Parser.getTok().is(AsmToken::Minus)) {
|
|
if (Parser.getTok().is(AsmToken::Minus)) {
|
|
if (!Spacing)
|
|
Spacing = 1; // Register range implies a single spaced list.
|
|
else if (Spacing == 2) {
|
|
Error(Parser.getTok().getLoc(),
|
|
"sequential registers in double spaced list");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat the minus.
|
|
SMLoc AfterMinusLoc = Parser.getTok().getLoc();
|
|
int EndReg = tryParseRegister();
|
|
if (EndReg == -1) {
|
|
Error(AfterMinusLoc, "register expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
// Allow Q regs and just interpret them as the two D sub-registers.
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
|
|
EndReg = getDRegFromQReg(EndReg) + 1;
|
|
// If the register is the same as the start reg, there's nothing
|
|
// more to do.
|
|
if (Reg == EndReg)
|
|
continue;
|
|
// The register must be in the same register class as the first.
|
|
if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
|
|
Error(AfterMinusLoc, "invalid register in register list");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
// Ranges must go from low to high.
|
|
if (Reg > EndReg) {
|
|
Error(AfterMinusLoc, "bad range in register list");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
// Parse the lane specifier if present.
|
|
VectorLaneTy NextLaneKind;
|
|
unsigned NextLaneIndex;
|
|
if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
|
|
MatchOperand_Success)
|
|
return MatchOperand_ParseFail;
|
|
if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
|
|
Error(AfterMinusLoc, "mismatched lane index in register list");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
// Add all the registers in the range to the register list.
|
|
Count += EndReg - Reg;
|
|
Reg = EndReg;
|
|
continue;
|
|
}
|
|
Parser.Lex(); // Eat the comma.
|
|
RegLoc = Parser.getTok().getLoc();
|
|
int OldReg = Reg;
|
|
Reg = tryParseRegister();
|
|
if (Reg == -1) {
|
|
Error(RegLoc, "register expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
// vector register lists must be contiguous.
|
|
// It's OK to use the enumeration values directly here rather, as the
|
|
// VFP register classes have the enum sorted properly.
|
|
//
|
|
// The list is of D registers, but we also allow Q regs and just interpret
|
|
// them as the two D sub-registers.
|
|
if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
|
|
if (!Spacing)
|
|
Spacing = 1; // Register range implies a single spaced list.
|
|
else if (Spacing == 2) {
|
|
Error(RegLoc,
|
|
"invalid register in double-spaced list (must be 'D' register')");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Reg = getDRegFromQReg(Reg);
|
|
if (Reg != OldReg + 1) {
|
|
Error(RegLoc, "non-contiguous register range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
++Reg;
|
|
Count += 2;
|
|
// Parse the lane specifier if present.
|
|
VectorLaneTy NextLaneKind;
|
|
unsigned NextLaneIndex;
|
|
SMLoc LaneLoc = Parser.getTok().getLoc();
|
|
if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
|
|
MatchOperand_Success)
|
|
return MatchOperand_ParseFail;
|
|
if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
|
|
Error(LaneLoc, "mismatched lane index in register list");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
continue;
|
|
}
|
|
// Normal D register.
|
|
// Figure out the register spacing (single or double) of the list if
|
|
// we don't know it already.
|
|
if (!Spacing)
|
|
Spacing = 1 + (Reg == OldReg + 2);
|
|
|
|
// Just check that it's contiguous and keep going.
|
|
if (Reg != OldReg + Spacing) {
|
|
Error(RegLoc, "non-contiguous register range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
++Count;
|
|
// Parse the lane specifier if present.
|
|
VectorLaneTy NextLaneKind;
|
|
unsigned NextLaneIndex;
|
|
SMLoc EndLoc = Parser.getTok().getLoc();
|
|
if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != MatchOperand_Success)
|
|
return MatchOperand_ParseFail;
|
|
if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
|
|
Error(EndLoc, "mismatched lane index in register list");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
}
|
|
|
|
if (Parser.getTok().isNot(AsmToken::RCurly)) {
|
|
Error(Parser.getTok().getLoc(), "'}' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat '}' token.
|
|
|
|
switch (LaneKind) {
|
|
case NoLanes:
|
|
// Two-register operands have been converted to the
|
|
// composite register classes.
|
|
if (Count == 2) {
|
|
const MCRegisterClass *RC = (Spacing == 1) ?
|
|
&ARMMCRegisterClasses[ARM::DPairRegClassID] :
|
|
&ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
|
|
FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
|
|
(Spacing == 2), S, E));
|
|
break;
|
|
case AllLanes:
|
|
// Two-register operands have been converted to the
|
|
// composite register classes.
|
|
if (Count == 2) {
|
|
const MCRegisterClass *RC = (Spacing == 1) ?
|
|
&ARMMCRegisterClasses[ARM::DPairRegClassID] :
|
|
&ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
|
|
FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
|
|
}
|
|
Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
|
|
(Spacing == 2),
|
|
S, E));
|
|
break;
|
|
case IndexedLane:
|
|
Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
|
|
LaneIndex,
|
|
(Spacing == 2),
|
|
S, E));
|
|
break;
|
|
}
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseMemBarrierOptOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
unsigned Opt;
|
|
|
|
if (Tok.is(AsmToken::Identifier)) {
|
|
StringRef OptStr = Tok.getString();
|
|
|
|
Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower())
|
|
.Case("sy", ARM_MB::SY)
|
|
.Case("st", ARM_MB::ST)
|
|
.Case("ld", ARM_MB::LD)
|
|
.Case("sh", ARM_MB::ISH)
|
|
.Case("ish", ARM_MB::ISH)
|
|
.Case("shst", ARM_MB::ISHST)
|
|
.Case("ishst", ARM_MB::ISHST)
|
|
.Case("ishld", ARM_MB::ISHLD)
|
|
.Case("nsh", ARM_MB::NSH)
|
|
.Case("un", ARM_MB::NSH)
|
|
.Case("nshst", ARM_MB::NSHST)
|
|
.Case("nshld", ARM_MB::NSHLD)
|
|
.Case("unst", ARM_MB::NSHST)
|
|
.Case("osh", ARM_MB::OSH)
|
|
.Case("oshst", ARM_MB::OSHST)
|
|
.Case("oshld", ARM_MB::OSHLD)
|
|
.Default(~0U);
|
|
|
|
// ishld, oshld, nshld and ld are only available from ARMv8.
|
|
if (!hasV8Ops() && (Opt == ARM_MB::ISHLD || Opt == ARM_MB::OSHLD ||
|
|
Opt == ARM_MB::NSHLD || Opt == ARM_MB::LD))
|
|
Opt = ~0U;
|
|
|
|
if (Opt == ~0U)
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
} else if (Tok.is(AsmToken::Hash) ||
|
|
Tok.is(AsmToken::Dollar) ||
|
|
Tok.is(AsmToken::Integer)) {
|
|
if (Parser.getTok().isNot(AsmToken::Integer))
|
|
Parser.Lex(); // Eat '#' or '$'.
|
|
SMLoc Loc = Parser.getTok().getLoc();
|
|
|
|
const MCExpr *MemBarrierID;
|
|
if (getParser().parseExpression(MemBarrierID)) {
|
|
Error(Loc, "illegal expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(MemBarrierID);
|
|
if (!CE) {
|
|
Error(Loc, "constant expression expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
int Val = CE->getValue();
|
|
if (Val & ~0xf) {
|
|
Error(Loc, "immediate value out of range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
Opt = ARM_MB::RESERVED_0 + Val;
|
|
} else
|
|
return MatchOperand_ParseFail;
|
|
|
|
Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseInstSyncBarrierOptOperand - Try to parse ISB inst sync barrier options.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseInstSyncBarrierOptOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
unsigned Opt;
|
|
|
|
if (Tok.is(AsmToken::Identifier)) {
|
|
StringRef OptStr = Tok.getString();
|
|
|
|
if (OptStr.equals_lower("sy"))
|
|
Opt = ARM_ISB::SY;
|
|
else
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
} else if (Tok.is(AsmToken::Hash) ||
|
|
Tok.is(AsmToken::Dollar) ||
|
|
Tok.is(AsmToken::Integer)) {
|
|
if (Parser.getTok().isNot(AsmToken::Integer))
|
|
Parser.Lex(); // Eat '#' or '$'.
|
|
SMLoc Loc = Parser.getTok().getLoc();
|
|
|
|
const MCExpr *ISBarrierID;
|
|
if (getParser().parseExpression(ISBarrierID)) {
|
|
Error(Loc, "illegal expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ISBarrierID);
|
|
if (!CE) {
|
|
Error(Loc, "constant expression expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
int Val = CE->getValue();
|
|
if (Val & ~0xf) {
|
|
Error(Loc, "immediate value out of range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
Opt = ARM_ISB::RESERVED_0 + Val;
|
|
} else
|
|
return MatchOperand_ParseFail;
|
|
|
|
Operands.push_back(ARMOperand::CreateInstSyncBarrierOpt(
|
|
(ARM_ISB::InstSyncBOpt)Opt, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
|
|
/// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseProcIFlagsOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (!Tok.is(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
StringRef IFlagsStr = Tok.getString();
|
|
|
|
// An iflags string of "none" is interpreted to mean that none of the AIF
|
|
// bits are set. Not a terribly useful instruction, but a valid encoding.
|
|
unsigned IFlags = 0;
|
|
if (IFlagsStr != "none") {
|
|
for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
|
|
unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
|
|
.Case("a", ARM_PROC::A)
|
|
.Case("i", ARM_PROC::I)
|
|
.Case("f", ARM_PROC::F)
|
|
.Default(~0U);
|
|
|
|
// If some specific iflag is already set, it means that some letter is
|
|
// present more than once, this is not acceptable.
|
|
if (Flag == ~0U || (IFlags & Flag))
|
|
return MatchOperand_NoMatch;
|
|
|
|
IFlags |= Flag;
|
|
}
|
|
}
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseMSRMaskOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (!Tok.is(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
StringRef Mask = Tok.getString();
|
|
|
|
if (isMClass()) {
|
|
// See ARMv6-M 10.1.1
|
|
std::string Name = Mask.lower();
|
|
unsigned FlagsVal = StringSwitch<unsigned>(Name)
|
|
// Note: in the documentation:
|
|
// ARM deprecates using MSR APSR without a _<bits> qualifier as an alias
|
|
// for MSR APSR_nzcvq.
|
|
// but we do make it an alias here. This is so to get the "mask encoding"
|
|
// bits correct on MSR APSR writes.
|
|
//
|
|
// FIXME: Note the 0xc00 "mask encoding" bits version of the registers
|
|
// should really only be allowed when writing a special register. Note
|
|
// they get dropped in the MRS instruction reading a special register as
|
|
// the SYSm field is only 8 bits.
|
|
.Case("apsr", 0x800)
|
|
.Case("apsr_nzcvq", 0x800)
|
|
.Case("apsr_g", 0x400)
|
|
.Case("apsr_nzcvqg", 0xc00)
|
|
.Case("iapsr", 0x801)
|
|
.Case("iapsr_nzcvq", 0x801)
|
|
.Case("iapsr_g", 0x401)
|
|
.Case("iapsr_nzcvqg", 0xc01)
|
|
.Case("eapsr", 0x802)
|
|
.Case("eapsr_nzcvq", 0x802)
|
|
.Case("eapsr_g", 0x402)
|
|
.Case("eapsr_nzcvqg", 0xc02)
|
|
.Case("xpsr", 0x803)
|
|
.Case("xpsr_nzcvq", 0x803)
|
|
.Case("xpsr_g", 0x403)
|
|
.Case("xpsr_nzcvqg", 0xc03)
|
|
.Case("ipsr", 0x805)
|
|
.Case("epsr", 0x806)
|
|
.Case("iepsr", 0x807)
|
|
.Case("msp", 0x808)
|
|
.Case("psp", 0x809)
|
|
.Case("primask", 0x810)
|
|
.Case("basepri", 0x811)
|
|
.Case("basepri_max", 0x812)
|
|
.Case("faultmask", 0x813)
|
|
.Case("control", 0x814)
|
|
.Case("msplim", 0x80a)
|
|
.Case("psplim", 0x80b)
|
|
.Case("msp_ns", 0x888)
|
|
.Case("psp_ns", 0x889)
|
|
.Case("msplim_ns", 0x88a)
|
|
.Case("psplim_ns", 0x88b)
|
|
.Case("primask_ns", 0x890)
|
|
.Case("basepri_ns", 0x891)
|
|
.Case("basepri_max_ns", 0x892)
|
|
.Case("faultmask_ns", 0x893)
|
|
.Case("control_ns", 0x894)
|
|
.Case("sp_ns", 0x898)
|
|
.Default(~0U);
|
|
|
|
if (FlagsVal == ~0U)
|
|
return MatchOperand_NoMatch;
|
|
|
|
if (!hasDSP() && (FlagsVal & 0x400))
|
|
// The _g and _nzcvqg versions are only valid if the DSP extension is
|
|
// available.
|
|
return MatchOperand_NoMatch;
|
|
|
|
if (!hasV7Ops() && FlagsVal >= 0x811 && FlagsVal <= 0x813)
|
|
// basepri, basepri_max and faultmask only valid for V7m.
|
|
return MatchOperand_NoMatch;
|
|
|
|
if (!has8MSecExt() && (FlagsVal == 0x80a || FlagsVal == 0x80b ||
|
|
(FlagsVal > 0x814 && FlagsVal < 0xc00)))
|
|
return MatchOperand_NoMatch;
|
|
|
|
if (!hasV8MMainline() && (FlagsVal == 0x88a || FlagsVal == 0x88b ||
|
|
(FlagsVal > 0x890 && FlagsVal <= 0x893)))
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
// Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
|
|
size_t Start = 0, Next = Mask.find('_');
|
|
StringRef Flags = "";
|
|
std::string SpecReg = Mask.slice(Start, Next).lower();
|
|
if (Next != StringRef::npos)
|
|
Flags = Mask.slice(Next+1, Mask.size());
|
|
|
|
// FlagsVal contains the complete mask:
|
|
// 3-0: Mask
|
|
// 4: Special Reg (cpsr, apsr => 0; spsr => 1)
|
|
unsigned FlagsVal = 0;
|
|
|
|
if (SpecReg == "apsr") {
|
|
FlagsVal = StringSwitch<unsigned>(Flags)
|
|
.Case("nzcvq", 0x8) // same as CPSR_f
|
|
.Case("g", 0x4) // same as CPSR_s
|
|
.Case("nzcvqg", 0xc) // same as CPSR_fs
|
|
.Default(~0U);
|
|
|
|
if (FlagsVal == ~0U) {
|
|
if (!Flags.empty())
|
|
return MatchOperand_NoMatch;
|
|
else
|
|
FlagsVal = 8; // No flag
|
|
}
|
|
} else if (SpecReg == "cpsr" || SpecReg == "spsr") {
|
|
// cpsr_all is an alias for cpsr_fc, as is plain cpsr.
|
|
if (Flags == "all" || Flags == "")
|
|
Flags = "fc";
|
|
for (int i = 0, e = Flags.size(); i != e; ++i) {
|
|
unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
|
|
.Case("c", 1)
|
|
.Case("x", 2)
|
|
.Case("s", 4)
|
|
.Case("f", 8)
|
|
.Default(~0U);
|
|
|
|
// If some specific flag is already set, it means that some letter is
|
|
// present more than once, this is not acceptable.
|
|
if (FlagsVal == ~0U || (FlagsVal & Flag))
|
|
return MatchOperand_NoMatch;
|
|
FlagsVal |= Flag;
|
|
}
|
|
} else // No match for special register.
|
|
return MatchOperand_NoMatch;
|
|
|
|
// Special register without flags is NOT equivalent to "fc" flags.
|
|
// NOTE: This is a divergence from gas' behavior. Uncommenting the following
|
|
// two lines would enable gas compatibility at the expense of breaking
|
|
// round-tripping.
|
|
//
|
|
// if (!FlagsVal)
|
|
// FlagsVal = 0x9;
|
|
|
|
// Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
|
|
if (SpecReg == "spsr")
|
|
FlagsVal |= 16;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseBankedRegOperand - Try to parse a banked register (e.g. "lr_irq") for
|
|
/// use in the MRS/MSR instructions added to support virtualization.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseBankedRegOperand(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (!Tok.is(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
StringRef RegName = Tok.getString();
|
|
|
|
// The values here come from B9.2.3 of the ARM ARM, where bits 4-0 are SysM
|
|
// and bit 5 is R.
|
|
unsigned Encoding = StringSwitch<unsigned>(RegName.lower())
|
|
.Case("r8_usr", 0x00)
|
|
.Case("r9_usr", 0x01)
|
|
.Case("r10_usr", 0x02)
|
|
.Case("r11_usr", 0x03)
|
|
.Case("r12_usr", 0x04)
|
|
.Case("sp_usr", 0x05)
|
|
.Case("lr_usr", 0x06)
|
|
.Case("r8_fiq", 0x08)
|
|
.Case("r9_fiq", 0x09)
|
|
.Case("r10_fiq", 0x0a)
|
|
.Case("r11_fiq", 0x0b)
|
|
.Case("r12_fiq", 0x0c)
|
|
.Case("sp_fiq", 0x0d)
|
|
.Case("lr_fiq", 0x0e)
|
|
.Case("lr_irq", 0x10)
|
|
.Case("sp_irq", 0x11)
|
|
.Case("lr_svc", 0x12)
|
|
.Case("sp_svc", 0x13)
|
|
.Case("lr_abt", 0x14)
|
|
.Case("sp_abt", 0x15)
|
|
.Case("lr_und", 0x16)
|
|
.Case("sp_und", 0x17)
|
|
.Case("lr_mon", 0x1c)
|
|
.Case("sp_mon", 0x1d)
|
|
.Case("elr_hyp", 0x1e)
|
|
.Case("sp_hyp", 0x1f)
|
|
.Case("spsr_fiq", 0x2e)
|
|
.Case("spsr_irq", 0x30)
|
|
.Case("spsr_svc", 0x32)
|
|
.Case("spsr_abt", 0x34)
|
|
.Case("spsr_und", 0x36)
|
|
.Case("spsr_mon", 0x3c)
|
|
.Case("spsr_hyp", 0x3e)
|
|
.Default(~0U);
|
|
|
|
if (Encoding == ~0U)
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat identifier token.
|
|
Operands.push_back(ARMOperand::CreateBankedReg(Encoding, S));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parsePKHImm(OperandVector &Operands, StringRef Op, int Low,
|
|
int High) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier)) {
|
|
Error(Parser.getTok().getLoc(), Op + " operand expected.");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
StringRef ShiftName = Tok.getString();
|
|
std::string LowerOp = Op.lower();
|
|
std::string UpperOp = Op.upper();
|
|
if (ShiftName != LowerOp && ShiftName != UpperOp) {
|
|
Error(Parser.getTok().getLoc(), Op + " operand expected.");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat shift type token.
|
|
|
|
// There must be a '#' and a shift amount.
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat hash token.
|
|
|
|
const MCExpr *ShiftAmount;
|
|
SMLoc Loc = Parser.getTok().getLoc();
|
|
SMLoc EndLoc;
|
|
if (getParser().parseExpression(ShiftAmount, EndLoc)) {
|
|
Error(Loc, "illegal expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
|
|
if (!CE) {
|
|
Error(Loc, "constant expression expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
int Val = CE->getValue();
|
|
if (Val < Low || Val > High) {
|
|
Error(Loc, "immediate value out of range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreateImm(CE, Loc, EndLoc));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseSetEndImm(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
SMLoc S = Tok.getLoc();
|
|
if (Tok.isNot(AsmToken::Identifier)) {
|
|
Error(S, "'be' or 'le' operand expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
int Val = StringSwitch<int>(Tok.getString().lower())
|
|
.Case("be", 1)
|
|
.Case("le", 0)
|
|
.Default(-1);
|
|
Parser.Lex(); // Eat the token.
|
|
|
|
if (Val == -1) {
|
|
Error(S, "'be' or 'le' operand expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::create(Val,
|
|
getContext()),
|
|
S, Tok.getEndLoc()));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
|
|
/// instructions. Legal values are:
|
|
/// lsl #n 'n' in [0,31]
|
|
/// asr #n 'n' in [1,32]
|
|
/// n == 32 encoded as n == 0.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseShifterImm(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
SMLoc S = Tok.getLoc();
|
|
if (Tok.isNot(AsmToken::Identifier)) {
|
|
Error(S, "shift operator 'asr' or 'lsl' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
StringRef ShiftName = Tok.getString();
|
|
bool isASR;
|
|
if (ShiftName == "lsl" || ShiftName == "LSL")
|
|
isASR = false;
|
|
else if (ShiftName == "asr" || ShiftName == "ASR")
|
|
isASR = true;
|
|
else {
|
|
Error(S, "shift operator 'asr' or 'lsl' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat the operator.
|
|
|
|
// A '#' and a shift amount.
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat hash token.
|
|
SMLoc ExLoc = Parser.getTok().getLoc();
|
|
|
|
const MCExpr *ShiftAmount;
|
|
SMLoc EndLoc;
|
|
if (getParser().parseExpression(ShiftAmount, EndLoc)) {
|
|
Error(ExLoc, "malformed shift expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
|
|
if (!CE) {
|
|
Error(ExLoc, "shift amount must be an immediate");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
int64_t Val = CE->getValue();
|
|
if (isASR) {
|
|
// Shift amount must be in [1,32]
|
|
if (Val < 1 || Val > 32) {
|
|
Error(ExLoc, "'asr' shift amount must be in range [1,32]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
// asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
|
|
if (isThumb() && Val == 32) {
|
|
Error(ExLoc, "'asr #32' shift amount not allowed in Thumb mode");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
if (Val == 32) Val = 0;
|
|
} else {
|
|
// Shift amount must be in [1,32]
|
|
if (Val < 0 || Val > 31) {
|
|
Error(ExLoc, "'lsr' shift amount must be in range [0,31]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, EndLoc));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
|
|
/// of instructions. Legal values are:
|
|
/// ror #n 'n' in {0, 8, 16, 24}
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseRotImm(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
SMLoc S = Tok.getLoc();
|
|
if (Tok.isNot(AsmToken::Identifier))
|
|
return MatchOperand_NoMatch;
|
|
StringRef ShiftName = Tok.getString();
|
|
if (ShiftName != "ror" && ShiftName != "ROR")
|
|
return MatchOperand_NoMatch;
|
|
Parser.Lex(); // Eat the operator.
|
|
|
|
// A '#' and a rotate amount.
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat hash token.
|
|
SMLoc ExLoc = Parser.getTok().getLoc();
|
|
|
|
const MCExpr *ShiftAmount;
|
|
SMLoc EndLoc;
|
|
if (getParser().parseExpression(ShiftAmount, EndLoc)) {
|
|
Error(ExLoc, "malformed rotate expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
|
|
if (!CE) {
|
|
Error(ExLoc, "rotate amount must be an immediate");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
int64_t Val = CE->getValue();
|
|
// Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
|
|
// normally, zero is represented in asm by omitting the rotate operand
|
|
// entirely.
|
|
if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
|
|
Error(ExLoc, "'ror' rotate amount must be 8, 16, or 24");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreateRotImm(Val, S, EndLoc));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseModImm(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
MCAsmLexer &Lexer = getLexer();
|
|
int64_t Imm1, Imm2;
|
|
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
|
|
// 1) A mod_imm operand can appear in the place of a register name:
|
|
// add r0, #mod_imm
|
|
// add r0, r0, #mod_imm
|
|
// to correctly handle the latter, we bail out as soon as we see an
|
|
// identifier.
|
|
//
|
|
// 2) Similarly, we do not want to parse into complex operands:
|
|
// mov r0, #mod_imm
|
|
// mov r0, :lower16:(_foo)
|
|
if (Parser.getTok().is(AsmToken::Identifier) ||
|
|
Parser.getTok().is(AsmToken::Colon))
|
|
return MatchOperand_NoMatch;
|
|
|
|
// Hash (dollar) is optional as per the ARMARM
|
|
if (Parser.getTok().is(AsmToken::Hash) ||
|
|
Parser.getTok().is(AsmToken::Dollar)) {
|
|
// Avoid parsing into complex operands (#:)
|
|
if (Lexer.peekTok().is(AsmToken::Colon))
|
|
return MatchOperand_NoMatch;
|
|
|
|
// Eat the hash (dollar)
|
|
Parser.Lex();
|
|
}
|
|
|
|
SMLoc Sx1, Ex1;
|
|
Sx1 = Parser.getTok().getLoc();
|
|
const MCExpr *Imm1Exp;
|
|
if (getParser().parseExpression(Imm1Exp, Ex1)) {
|
|
Error(Sx1, "malformed expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm1Exp);
|
|
|
|
if (CE) {
|
|
// Immediate must fit within 32-bits
|
|
Imm1 = CE->getValue();
|
|
int Enc = ARM_AM::getSOImmVal(Imm1);
|
|
if (Enc != -1 && Parser.getTok().is(AsmToken::EndOfStatement)) {
|
|
// We have a match!
|
|
Operands.push_back(ARMOperand::CreateModImm((Enc & 0xFF),
|
|
(Enc & 0xF00) >> 7,
|
|
Sx1, Ex1));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
// We have parsed an immediate which is not for us, fallback to a plain
|
|
// immediate. This can happen for instruction aliases. For an example,
|
|
// ARMInstrInfo.td defines the alias [mov <-> mvn] which can transform
|
|
// a mov (mvn) with a mod_imm_neg/mod_imm_not operand into the opposite
|
|
// instruction with a mod_imm operand. The alias is defined such that the
|
|
// parser method is shared, that's why we have to do this here.
|
|
if (Parser.getTok().is(AsmToken::EndOfStatement)) {
|
|
Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1));
|
|
return MatchOperand_Success;
|
|
}
|
|
} else {
|
|
// Operands like #(l1 - l2) can only be evaluated at a later stage (via an
|
|
// MCFixup). Fallback to a plain immediate.
|
|
Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
// From this point onward, we expect the input to be a (#bits, #rot) pair
|
|
if (Parser.getTok().isNot(AsmToken::Comma)) {
|
|
Error(Sx1, "expected modified immediate operand: #[0, 255], #even[0-30]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
if (Imm1 & ~0xFF) {
|
|
Error(Sx1, "immediate operand must a number in the range [0, 255]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
// Eat the comma
|
|
Parser.Lex();
|
|
|
|
// Repeat for #rot
|
|
SMLoc Sx2, Ex2;
|
|
Sx2 = Parser.getTok().getLoc();
|
|
|
|
// Eat the optional hash (dollar)
|
|
if (Parser.getTok().is(AsmToken::Hash) ||
|
|
Parser.getTok().is(AsmToken::Dollar))
|
|
Parser.Lex();
|
|
|
|
const MCExpr *Imm2Exp;
|
|
if (getParser().parseExpression(Imm2Exp, Ex2)) {
|
|
Error(Sx2, "malformed expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
CE = dyn_cast<MCConstantExpr>(Imm2Exp);
|
|
|
|
if (CE) {
|
|
Imm2 = CE->getValue();
|
|
if (!(Imm2 & ~0x1E)) {
|
|
// We have a match!
|
|
Operands.push_back(ARMOperand::CreateModImm(Imm1, Imm2, S, Ex2));
|
|
return MatchOperand_Success;
|
|
}
|
|
Error(Sx2, "immediate operand must an even number in the range [0, 30]");
|
|
return MatchOperand_ParseFail;
|
|
} else {
|
|
Error(Sx2, "constant expression expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
}
|
|
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseBitfield(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
// The bitfield descriptor is really two operands, the LSB and the width.
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat hash token.
|
|
|
|
const MCExpr *LSBExpr;
|
|
SMLoc E = Parser.getTok().getLoc();
|
|
if (getParser().parseExpression(LSBExpr)) {
|
|
Error(E, "malformed immediate expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
|
|
if (!CE) {
|
|
Error(E, "'lsb' operand must be an immediate");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
int64_t LSB = CE->getValue();
|
|
// The LSB must be in the range [0,31]
|
|
if (LSB < 0 || LSB > 31) {
|
|
Error(E, "'lsb' operand must be in the range [0,31]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
E = Parser.getTok().getLoc();
|
|
|
|
// Expect another immediate operand.
|
|
if (Parser.getTok().isNot(AsmToken::Comma)) {
|
|
Error(Parser.getTok().getLoc(), "too few operands");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat hash token.
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
Parser.Lex(); // Eat hash token.
|
|
|
|
const MCExpr *WidthExpr;
|
|
SMLoc EndLoc;
|
|
if (getParser().parseExpression(WidthExpr, EndLoc)) {
|
|
Error(E, "malformed immediate expression");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
CE = dyn_cast<MCConstantExpr>(WidthExpr);
|
|
if (!CE) {
|
|
Error(E, "'width' operand must be an immediate");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
int64_t Width = CE->getValue();
|
|
// The LSB must be in the range [1,32-lsb]
|
|
if (Width < 1 || Width > 32 - LSB) {
|
|
Error(E, "'width' operand must be in the range [1,32-lsb]");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, EndLoc));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parsePostIdxReg(OperandVector &Operands) {
|
|
// Check for a post-index addressing register operand. Specifically:
|
|
// postidx_reg := '+' register {, shift}
|
|
// | '-' register {, shift}
|
|
// | register {, shift}
|
|
|
|
// This method must return MatchOperand_NoMatch without consuming any tokens
|
|
// in the case where there is no match, as other alternatives take other
|
|
// parse methods.
|
|
MCAsmParser &Parser = getParser();
|
|
AsmToken Tok = Parser.getTok();
|
|
SMLoc S = Tok.getLoc();
|
|
bool haveEaten = false;
|
|
bool isAdd = true;
|
|
if (Tok.is(AsmToken::Plus)) {
|
|
Parser.Lex(); // Eat the '+' token.
|
|
haveEaten = true;
|
|
} else if (Tok.is(AsmToken::Minus)) {
|
|
Parser.Lex(); // Eat the '-' token.
|
|
isAdd = false;
|
|
haveEaten = true;
|
|
}
|
|
|
|
SMLoc E = Parser.getTok().getEndLoc();
|
|
int Reg = tryParseRegister();
|
|
if (Reg == -1) {
|
|
if (!haveEaten)
|
|
return MatchOperand_NoMatch;
|
|
Error(Parser.getTok().getLoc(), "register expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
|
|
unsigned ShiftImm = 0;
|
|
if (Parser.getTok().is(AsmToken::Comma)) {
|
|
Parser.Lex(); // Eat the ','.
|
|
if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
|
|
return MatchOperand_ParseFail;
|
|
|
|
// FIXME: Only approximates end...may include intervening whitespace.
|
|
E = Parser.getTok().getLoc();
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
|
|
ShiftImm, S, E));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseAM3Offset(OperandVector &Operands) {
|
|
// Check for a post-index addressing register operand. Specifically:
|
|
// am3offset := '+' register
|
|
// | '-' register
|
|
// | register
|
|
// | # imm
|
|
// | # + imm
|
|
// | # - imm
|
|
|
|
// This method must return MatchOperand_NoMatch without consuming any tokens
|
|
// in the case where there is no match, as other alternatives take other
|
|
// parse methods.
|
|
MCAsmParser &Parser = getParser();
|
|
AsmToken Tok = Parser.getTok();
|
|
SMLoc S = Tok.getLoc();
|
|
|
|
// Do immediates first, as we always parse those if we have a '#'.
|
|
if (Parser.getTok().is(AsmToken::Hash) ||
|
|
Parser.getTok().is(AsmToken::Dollar)) {
|
|
Parser.Lex(); // Eat '#' or '$'.
|
|
// Explicitly look for a '-', as we need to encode negative zero
|
|
// differently.
|
|
bool isNegative = Parser.getTok().is(AsmToken::Minus);
|
|
const MCExpr *Offset;
|
|
SMLoc E;
|
|
if (getParser().parseExpression(Offset, E))
|
|
return MatchOperand_ParseFail;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
|
|
if (!CE) {
|
|
Error(S, "constant expression expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
// Negative zero is encoded as the flag value INT32_MIN.
|
|
int32_t Val = CE->getValue();
|
|
if (isNegative && Val == 0)
|
|
Val = INT32_MIN;
|
|
|
|
Operands.push_back(
|
|
ARMOperand::CreateImm(MCConstantExpr::create(Val, getContext()), S, E));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
|
|
bool haveEaten = false;
|
|
bool isAdd = true;
|
|
if (Tok.is(AsmToken::Plus)) {
|
|
Parser.Lex(); // Eat the '+' token.
|
|
haveEaten = true;
|
|
} else if (Tok.is(AsmToken::Minus)) {
|
|
Parser.Lex(); // Eat the '-' token.
|
|
isAdd = false;
|
|
haveEaten = true;
|
|
}
|
|
|
|
Tok = Parser.getTok();
|
|
int Reg = tryParseRegister();
|
|
if (Reg == -1) {
|
|
if (!haveEaten)
|
|
return MatchOperand_NoMatch;
|
|
Error(Tok.getLoc(), "register expected");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
|
|
0, S, Tok.getEndLoc()));
|
|
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
/// Convert parsed operands to MCInst. Needed here because this instruction
|
|
/// only has two register operands, but multiplication is commutative so
|
|
/// assemblers should accept both "mul rD, rN, rD" and "mul rD, rD, rN".
|
|
void ARMAsmParser::cvtThumbMultiply(MCInst &Inst,
|
|
const OperandVector &Operands) {
|
|
((ARMOperand &)*Operands[3]).addRegOperands(Inst, 1);
|
|
((ARMOperand &)*Operands[1]).addCCOutOperands(Inst, 1);
|
|
// If we have a three-operand form, make sure to set Rn to be the operand
|
|
// that isn't the same as Rd.
|
|
unsigned RegOp = 4;
|
|
if (Operands.size() == 6 &&
|
|
((ARMOperand &)*Operands[4]).getReg() ==
|
|
((ARMOperand &)*Operands[3]).getReg())
|
|
RegOp = 5;
|
|
((ARMOperand &)*Operands[RegOp]).addRegOperands(Inst, 1);
|
|
Inst.addOperand(Inst.getOperand(0));
|
|
((ARMOperand &)*Operands[2]).addCondCodeOperands(Inst, 2);
|
|
}
|
|
|
|
void ARMAsmParser::cvtThumbBranches(MCInst &Inst,
|
|
const OperandVector &Operands) {
|
|
int CondOp = -1, ImmOp = -1;
|
|
switch(Inst.getOpcode()) {
|
|
case ARM::tB:
|
|
case ARM::tBcc: CondOp = 1; ImmOp = 2; break;
|
|
|
|
case ARM::t2B:
|
|
case ARM::t2Bcc: CondOp = 1; ImmOp = 3; break;
|
|
|
|
default: llvm_unreachable("Unexpected instruction in cvtThumbBranches");
|
|
}
|
|
// first decide whether or not the branch should be conditional
|
|
// by looking at it's location relative to an IT block
|
|
if(inITBlock()) {
|
|
// inside an IT block we cannot have any conditional branches. any
|
|
// such instructions needs to be converted to unconditional form
|
|
switch(Inst.getOpcode()) {
|
|
case ARM::tBcc: Inst.setOpcode(ARM::tB); break;
|
|
case ARM::t2Bcc: Inst.setOpcode(ARM::t2B); break;
|
|
}
|
|
} else {
|
|
// outside IT blocks we can only have unconditional branches with AL
|
|
// condition code or conditional branches with non-AL condition code
|
|
unsigned Cond = static_cast<ARMOperand &>(*Operands[CondOp]).getCondCode();
|
|
switch(Inst.getOpcode()) {
|
|
case ARM::tB:
|
|
case ARM::tBcc:
|
|
Inst.setOpcode(Cond == ARMCC::AL ? ARM::tB : ARM::tBcc);
|
|
break;
|
|
case ARM::t2B:
|
|
case ARM::t2Bcc:
|
|
Inst.setOpcode(Cond == ARMCC::AL ? ARM::t2B : ARM::t2Bcc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// now decide on encoding size based on branch target range
|
|
switch(Inst.getOpcode()) {
|
|
// classify tB as either t2B or t1B based on range of immediate operand
|
|
case ARM::tB: {
|
|
ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]);
|
|
if (!op.isSignedOffset<11, 1>() && isThumb() && hasV8MBaseline())
|
|
Inst.setOpcode(ARM::t2B);
|
|
break;
|
|
}
|
|
// classify tBcc as either t2Bcc or t1Bcc based on range of immediate operand
|
|
case ARM::tBcc: {
|
|
ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]);
|
|
if (!op.isSignedOffset<8, 1>() && isThumb() && hasV8MBaseline())
|
|
Inst.setOpcode(ARM::t2Bcc);
|
|
break;
|
|
}
|
|
}
|
|
((ARMOperand &)*Operands[ImmOp]).addImmOperands(Inst, 1);
|
|
((ARMOperand &)*Operands[CondOp]).addCondCodeOperands(Inst, 2);
|
|
}
|
|
|
|
/// Parse an ARM memory expression, return false if successful else return true
|
|
/// or an error. The first token must be a '[' when called.
|
|
bool ARMAsmParser::parseMemory(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S, E;
|
|
assert(Parser.getTok().is(AsmToken::LBrac) &&
|
|
"Token is not a Left Bracket");
|
|
S = Parser.getTok().getLoc();
|
|
Parser.Lex(); // Eat left bracket token.
|
|
|
|
const AsmToken &BaseRegTok = Parser.getTok();
|
|
int BaseRegNum = tryParseRegister();
|
|
if (BaseRegNum == -1)
|
|
return Error(BaseRegTok.getLoc(), "register expected");
|
|
|
|
// The next token must either be a comma, a colon or a closing bracket.
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (!Tok.is(AsmToken::Colon) && !Tok.is(AsmToken::Comma) &&
|
|
!Tok.is(AsmToken::RBrac))
|
|
return Error(Tok.getLoc(), "malformed memory operand");
|
|
|
|
if (Tok.is(AsmToken::RBrac)) {
|
|
E = Tok.getEndLoc();
|
|
Parser.Lex(); // Eat right bracket token.
|
|
|
|
Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0,
|
|
ARM_AM::no_shift, 0, 0, false,
|
|
S, E));
|
|
|
|
// If there's a pre-indexing writeback marker, '!', just add it as a token
|
|
// operand. It's rather odd, but syntactically valid.
|
|
if (Parser.getTok().is(AsmToken::Exclaim)) {
|
|
Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
|
|
Parser.Lex(); // Eat the '!'.
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
assert((Tok.is(AsmToken::Colon) || Tok.is(AsmToken::Comma)) &&
|
|
"Lost colon or comma in memory operand?!");
|
|
if (Tok.is(AsmToken::Comma)) {
|
|
Parser.Lex(); // Eat the comma.
|
|
}
|
|
|
|
// If we have a ':', it's an alignment specifier.
|
|
if (Parser.getTok().is(AsmToken::Colon)) {
|
|
Parser.Lex(); // Eat the ':'.
|
|
E = Parser.getTok().getLoc();
|
|
SMLoc AlignmentLoc = Tok.getLoc();
|
|
|
|
const MCExpr *Expr;
|
|
if (getParser().parseExpression(Expr))
|
|
return true;
|
|
|
|
// The expression has to be a constant. Memory references with relocations
|
|
// don't come through here, as they use the <label> forms of the relevant
|
|
// instructions.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
|
|
if (!CE)
|
|
return Error (E, "constant expression expected");
|
|
|
|
unsigned Align = 0;
|
|
switch (CE->getValue()) {
|
|
default:
|
|
return Error(E,
|
|
"alignment specifier must be 16, 32, 64, 128, or 256 bits");
|
|
case 16: Align = 2; break;
|
|
case 32: Align = 4; break;
|
|
case 64: Align = 8; break;
|
|
case 128: Align = 16; break;
|
|
case 256: Align = 32; break;
|
|
}
|
|
|
|
// Now we should have the closing ']'
|
|
if (Parser.getTok().isNot(AsmToken::RBrac))
|
|
return Error(Parser.getTok().getLoc(), "']' expected");
|
|
E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat right bracket token.
|
|
|
|
// Don't worry about range checking the value here. That's handled by
|
|
// the is*() predicates.
|
|
Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0,
|
|
ARM_AM::no_shift, 0, Align,
|
|
false, S, E, AlignmentLoc));
|
|
|
|
// If there's a pre-indexing writeback marker, '!', just add it as a token
|
|
// operand.
|
|
if (Parser.getTok().is(AsmToken::Exclaim)) {
|
|
Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
|
|
Parser.Lex(); // Eat the '!'.
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// If we have a '#', it's an immediate offset, else assume it's a register
|
|
// offset. Be friendly and also accept a plain integer (without a leading
|
|
// hash) for gas compatibility.
|
|
if (Parser.getTok().is(AsmToken::Hash) ||
|
|
Parser.getTok().is(AsmToken::Dollar) ||
|
|
Parser.getTok().is(AsmToken::Integer)) {
|
|
if (Parser.getTok().isNot(AsmToken::Integer))
|
|
Parser.Lex(); // Eat '#' or '$'.
|
|
E = Parser.getTok().getLoc();
|
|
|
|
bool isNegative = getParser().getTok().is(AsmToken::Minus);
|
|
const MCExpr *Offset;
|
|
if (getParser().parseExpression(Offset))
|
|
return true;
|
|
|
|
// The expression has to be a constant. Memory references with relocations
|
|
// don't come through here, as they use the <label> forms of the relevant
|
|
// instructions.
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
|
|
if (!CE)
|
|
return Error (E, "constant expression expected");
|
|
|
|
// If the constant was #-0, represent it as INT32_MIN.
|
|
int32_t Val = CE->getValue();
|
|
if (isNegative && Val == 0)
|
|
CE = MCConstantExpr::create(INT32_MIN, getContext());
|
|
|
|
// Now we should have the closing ']'
|
|
if (Parser.getTok().isNot(AsmToken::RBrac))
|
|
return Error(Parser.getTok().getLoc(), "']' expected");
|
|
E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat right bracket token.
|
|
|
|
// Don't worry about range checking the value here. That's handled by
|
|
// the is*() predicates.
|
|
Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
|
|
ARM_AM::no_shift, 0, 0,
|
|
false, S, E));
|
|
|
|
// If there's a pre-indexing writeback marker, '!', just add it as a token
|
|
// operand.
|
|
if (Parser.getTok().is(AsmToken::Exclaim)) {
|
|
Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
|
|
Parser.Lex(); // Eat the '!'.
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// The register offset is optionally preceded by a '+' or '-'
|
|
bool isNegative = false;
|
|
if (Parser.getTok().is(AsmToken::Minus)) {
|
|
isNegative = true;
|
|
Parser.Lex(); // Eat the '-'.
|
|
} else if (Parser.getTok().is(AsmToken::Plus)) {
|
|
// Nothing to do.
|
|
Parser.Lex(); // Eat the '+'.
|
|
}
|
|
|
|
E = Parser.getTok().getLoc();
|
|
int OffsetRegNum = tryParseRegister();
|
|
if (OffsetRegNum == -1)
|
|
return Error(E, "register expected");
|
|
|
|
// If there's a shift operator, handle it.
|
|
ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
|
|
unsigned ShiftImm = 0;
|
|
if (Parser.getTok().is(AsmToken::Comma)) {
|
|
Parser.Lex(); // Eat the ','.
|
|
if (parseMemRegOffsetShift(ShiftType, ShiftImm))
|
|
return true;
|
|
}
|
|
|
|
// Now we should have the closing ']'
|
|
if (Parser.getTok().isNot(AsmToken::RBrac))
|
|
return Error(Parser.getTok().getLoc(), "']' expected");
|
|
E = Parser.getTok().getEndLoc();
|
|
Parser.Lex(); // Eat right bracket token.
|
|
|
|
Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, OffsetRegNum,
|
|
ShiftType, ShiftImm, 0, isNegative,
|
|
S, E));
|
|
|
|
// If there's a pre-indexing writeback marker, '!', just add it as a token
|
|
// operand.
|
|
if (Parser.getTok().is(AsmToken::Exclaim)) {
|
|
Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
|
|
Parser.Lex(); // Eat the '!'.
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseMemRegOffsetShift - one of these two:
|
|
/// ( lsl | lsr | asr | ror ) , # shift_amount
|
|
/// rrx
|
|
/// return true if it parses a shift otherwise it returns false.
|
|
bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
|
|
unsigned &Amount) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc Loc = Parser.getTok().getLoc();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier))
|
|
return true;
|
|
StringRef ShiftName = Tok.getString();
|
|
if (ShiftName == "lsl" || ShiftName == "LSL" ||
|
|
ShiftName == "asl" || ShiftName == "ASL")
|
|
St = ARM_AM::lsl;
|
|
else if (ShiftName == "lsr" || ShiftName == "LSR")
|
|
St = ARM_AM::lsr;
|
|
else if (ShiftName == "asr" || ShiftName == "ASR")
|
|
St = ARM_AM::asr;
|
|
else if (ShiftName == "ror" || ShiftName == "ROR")
|
|
St = ARM_AM::ror;
|
|
else if (ShiftName == "rrx" || ShiftName == "RRX")
|
|
St = ARM_AM::rrx;
|
|
else
|
|
return Error(Loc, "illegal shift operator");
|
|
Parser.Lex(); // Eat shift type token.
|
|
|
|
// rrx stands alone.
|
|
Amount = 0;
|
|
if (St != ARM_AM::rrx) {
|
|
Loc = Parser.getTok().getLoc();
|
|
// A '#' and a shift amount.
|
|
const AsmToken &HashTok = Parser.getTok();
|
|
if (HashTok.isNot(AsmToken::Hash) &&
|
|
HashTok.isNot(AsmToken::Dollar))
|
|
return Error(HashTok.getLoc(), "'#' expected");
|
|
Parser.Lex(); // Eat hash token.
|
|
|
|
const MCExpr *Expr;
|
|
if (getParser().parseExpression(Expr))
|
|
return true;
|
|
// Range check the immediate.
|
|
// lsl, ror: 0 <= imm <= 31
|
|
// lsr, asr: 0 <= imm <= 32
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
|
|
if (!CE)
|
|
return Error(Loc, "shift amount must be an immediate");
|
|
int64_t Imm = CE->getValue();
|
|
if (Imm < 0 ||
|
|
((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
|
|
((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
|
|
return Error(Loc, "immediate shift value out of range");
|
|
// If <ShiftTy> #0, turn it into a no_shift.
|
|
if (Imm == 0)
|
|
St = ARM_AM::lsl;
|
|
// For consistency, treat lsr #32 and asr #32 as having immediate value 0.
|
|
if (Imm == 32)
|
|
Imm = 0;
|
|
Amount = Imm;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseFPImm - A floating point immediate expression operand.
|
|
ARMAsmParser::OperandMatchResultTy
|
|
ARMAsmParser::parseFPImm(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
// Anything that can accept a floating point constant as an operand
|
|
// needs to go through here, as the regular parseExpression is
|
|
// integer only.
|
|
//
|
|
// This routine still creates a generic Immediate operand, containing
|
|
// a bitcast of the 64-bit floating point value. The various operands
|
|
// that accept floats can check whether the value is valid for them
|
|
// via the standard is*() predicates.
|
|
|
|
SMLoc S = Parser.getTok().getLoc();
|
|
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar))
|
|
return MatchOperand_NoMatch;
|
|
|
|
// Disambiguate the VMOV forms that can accept an FP immediate.
|
|
// vmov.f32 <sreg>, #imm
|
|
// vmov.f64 <dreg>, #imm
|
|
// vmov.f32 <dreg>, #imm @ vector f32x2
|
|
// vmov.f32 <qreg>, #imm @ vector f32x4
|
|
//
|
|
// There are also the NEON VMOV instructions which expect an
|
|
// integer constant. Make sure we don't try to parse an FPImm
|
|
// for these:
|
|
// vmov.i{8|16|32|64} <dreg|qreg>, #imm
|
|
ARMOperand &TyOp = static_cast<ARMOperand &>(*Operands[2]);
|
|
bool isVmovf = TyOp.isToken() &&
|
|
(TyOp.getToken() == ".f32" || TyOp.getToken() == ".f64" ||
|
|
TyOp.getToken() == ".f16");
|
|
ARMOperand &Mnemonic = static_cast<ARMOperand &>(*Operands[0]);
|
|
bool isFconst = Mnemonic.isToken() && (Mnemonic.getToken() == "fconstd" ||
|
|
Mnemonic.getToken() == "fconsts");
|
|
if (!(isVmovf || isFconst))
|
|
return MatchOperand_NoMatch;
|
|
|
|
Parser.Lex(); // Eat '#' or '$'.
|
|
|
|
// Handle negation, as that still comes through as a separate token.
|
|
bool isNegative = false;
|
|
if (Parser.getTok().is(AsmToken::Minus)) {
|
|
isNegative = true;
|
|
Parser.Lex();
|
|
}
|
|
const AsmToken &Tok = Parser.getTok();
|
|
SMLoc Loc = Tok.getLoc();
|
|
if (Tok.is(AsmToken::Real) && isVmovf) {
|
|
APFloat RealVal(APFloat::IEEEsingle, Tok.getString());
|
|
uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
|
|
// If we had a '-' in front, toggle the sign bit.
|
|
IntVal ^= (uint64_t)isNegative << 31;
|
|
Parser.Lex(); // Eat the token.
|
|
Operands.push_back(ARMOperand::CreateImm(
|
|
MCConstantExpr::create(IntVal, getContext()),
|
|
S, Parser.getTok().getLoc()));
|
|
return MatchOperand_Success;
|
|
}
|
|
// Also handle plain integers. Instructions which allow floating point
|
|
// immediates also allow a raw encoded 8-bit value.
|
|
if (Tok.is(AsmToken::Integer) && isFconst) {
|
|
int64_t Val = Tok.getIntVal();
|
|
Parser.Lex(); // Eat the token.
|
|
if (Val > 255 || Val < 0) {
|
|
Error(Loc, "encoded floating point value out of range");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
float RealVal = ARM_AM::getFPImmFloat(Val);
|
|
Val = APFloat(RealVal).bitcastToAPInt().getZExtValue();
|
|
|
|
Operands.push_back(ARMOperand::CreateImm(
|
|
MCConstantExpr::create(Val, getContext()), S,
|
|
Parser.getTok().getLoc()));
|
|
return MatchOperand_Success;
|
|
}
|
|
|
|
Error(Loc, "invalid floating point immediate");
|
|
return MatchOperand_ParseFail;
|
|
}
|
|
|
|
/// Parse a arm instruction operand. For now this parses the operand regardless
|
|
/// of the mnemonic.
|
|
bool ARMAsmParser::parseOperand(OperandVector &Operands, StringRef Mnemonic) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc S, E;
|
|
|
|
// Check if the current operand has a custom associated parser, if so, try to
|
|
// custom parse the operand, or fallback to the general approach.
|
|
OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
|
|
if (ResTy == MatchOperand_Success)
|
|
return false;
|
|
// If there wasn't a custom match, try the generic matcher below. Otherwise,
|
|
// there was a match, but an error occurred, in which case, just return that
|
|
// the operand parsing failed.
|
|
if (ResTy == MatchOperand_ParseFail)
|
|
return true;
|
|
|
|
switch (getLexer().getKind()) {
|
|
default:
|
|
Error(Parser.getTok().getLoc(), "unexpected token in operand");
|
|
return true;
|
|
case AsmToken::Identifier: {
|
|
// If we've seen a branch mnemonic, the next operand must be a label. This
|
|
// is true even if the label is a register name. So "br r1" means branch to
|
|
// label "r1".
|
|
bool ExpectLabel = Mnemonic == "b" || Mnemonic == "bl";
|
|
if (!ExpectLabel) {
|
|
if (!tryParseRegisterWithWriteBack(Operands))
|
|
return false;
|
|
int Res = tryParseShiftRegister(Operands);
|
|
if (Res == 0) // success
|
|
return false;
|
|
else if (Res == -1) // irrecoverable error
|
|
return true;
|
|
// If this is VMRS, check for the apsr_nzcv operand.
|
|
if (Mnemonic == "vmrs" &&
|
|
Parser.getTok().getString().equals_lower("apsr_nzcv")) {
|
|
S = Parser.getTok().getLoc();
|
|
Parser.Lex();
|
|
Operands.push_back(ARMOperand::CreateToken("APSR_nzcv", S));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Fall though for the Identifier case that is not a register or a
|
|
// special name.
|
|
}
|
|
case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
|
|
case AsmToken::Integer: // things like 1f and 2b as a branch targets
|
|
case AsmToken::String: // quoted label names.
|
|
case AsmToken::Dot: { // . as a branch target
|
|
// This was not a register so parse other operands that start with an
|
|
// identifier (like labels) as expressions and create them as immediates.
|
|
const MCExpr *IdVal;
|
|
S = Parser.getTok().getLoc();
|
|
if (getParser().parseExpression(IdVal))
|
|
return true;
|
|
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
|
|
Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
|
|
return false;
|
|
}
|
|
case AsmToken::LBrac:
|
|
return parseMemory(Operands);
|
|
case AsmToken::LCurly:
|
|
return parseRegisterList(Operands);
|
|
case AsmToken::Dollar:
|
|
case AsmToken::Hash: {
|
|
// #42 -> immediate.
|
|
S = Parser.getTok().getLoc();
|
|
Parser.Lex();
|
|
|
|
if (Parser.getTok().isNot(AsmToken::Colon)) {
|
|
bool isNegative = Parser.getTok().is(AsmToken::Minus);
|
|
const MCExpr *ImmVal;
|
|
if (getParser().parseExpression(ImmVal))
|
|
return true;
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
|
|
if (CE) {
|
|
int32_t Val = CE->getValue();
|
|
if (isNegative && Val == 0)
|
|
ImmVal = MCConstantExpr::create(INT32_MIN, getContext());
|
|
}
|
|
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
|
|
Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
|
|
|
|
// There can be a trailing '!' on operands that we want as a separate
|
|
// '!' Token operand. Handle that here. For example, the compatibility
|
|
// alias for 'srsdb sp!, #imm' is 'srsdb #imm!'.
|
|
if (Parser.getTok().is(AsmToken::Exclaim)) {
|
|
Operands.push_back(ARMOperand::CreateToken(Parser.getTok().getString(),
|
|
Parser.getTok().getLoc()));
|
|
Parser.Lex(); // Eat exclaim token
|
|
}
|
|
return false;
|
|
}
|
|
// w/ a ':' after the '#', it's just like a plain ':'.
|
|
// FALLTHROUGH
|
|
}
|
|
case AsmToken::Colon: {
|
|
S = Parser.getTok().getLoc();
|
|
// ":lower16:" and ":upper16:" expression prefixes
|
|
// FIXME: Check it's an expression prefix,
|
|
// e.g. (FOO - :lower16:BAR) isn't legal.
|
|
ARMMCExpr::VariantKind RefKind;
|
|
if (parsePrefix(RefKind))
|
|
return true;
|
|
|
|
const MCExpr *SubExprVal;
|
|
if (getParser().parseExpression(SubExprVal))
|
|
return true;
|
|
|
|
const MCExpr *ExprVal = ARMMCExpr::create(RefKind, SubExprVal,
|
|
getContext());
|
|
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
|
|
Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
|
|
return false;
|
|
}
|
|
case AsmToken::Equal: {
|
|
S = Parser.getTok().getLoc();
|
|
if (Mnemonic != "ldr") // only parse for ldr pseudo (e.g. ldr r0, =val)
|
|
return Error(S, "unexpected token in operand");
|
|
Parser.Lex(); // Eat '='
|
|
const MCExpr *SubExprVal;
|
|
if (getParser().parseExpression(SubExprVal))
|
|
return true;
|
|
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
|
|
Operands.push_back(ARMOperand::CreateConstantPoolImm(SubExprVal, S, E));
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
|
|
// :lower16: and :upper16:.
|
|
bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
|
|
MCAsmParser &Parser = getParser();
|
|
RefKind = ARMMCExpr::VK_ARM_None;
|
|
|
|
// consume an optional '#' (GNU compatibility)
|
|
if (getLexer().is(AsmToken::Hash))
|
|
Parser.Lex();
|
|
|
|
// :lower16: and :upper16: modifiers
|
|
assert(getLexer().is(AsmToken::Colon) && "expected a :");
|
|
Parser.Lex(); // Eat ':'
|
|
|
|
if (getLexer().isNot(AsmToken::Identifier)) {
|
|
Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
|
|
return true;
|
|
}
|
|
|
|
enum {
|
|
COFF = (1 << MCObjectFileInfo::IsCOFF),
|
|
ELF = (1 << MCObjectFileInfo::IsELF),
|
|
MACHO = (1 << MCObjectFileInfo::IsMachO)
|
|
};
|
|
static const struct PrefixEntry {
|
|
const char *Spelling;
|
|
ARMMCExpr::VariantKind VariantKind;
|
|
uint8_t SupportedFormats;
|
|
} PrefixEntries[] = {
|
|
{ "lower16", ARMMCExpr::VK_ARM_LO16, COFF | ELF | MACHO },
|
|
{ "upper16", ARMMCExpr::VK_ARM_HI16, COFF | ELF | MACHO },
|
|
};
|
|
|
|
StringRef IDVal = Parser.getTok().getIdentifier();
|
|
|
|
const auto &Prefix =
|
|
std::find_if(std::begin(PrefixEntries), std::end(PrefixEntries),
|
|
[&IDVal](const PrefixEntry &PE) {
|
|
return PE.Spelling == IDVal;
|
|
});
|
|
if (Prefix == std::end(PrefixEntries)) {
|
|
Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
|
|
return true;
|
|
}
|
|
|
|
uint8_t CurrentFormat;
|
|
switch (getContext().getObjectFileInfo()->getObjectFileType()) {
|
|
case MCObjectFileInfo::IsMachO:
|
|
CurrentFormat = MACHO;
|
|
break;
|
|
case MCObjectFileInfo::IsELF:
|
|
CurrentFormat = ELF;
|
|
break;
|
|
case MCObjectFileInfo::IsCOFF:
|
|
CurrentFormat = COFF;
|
|
break;
|
|
}
|
|
|
|
if (~Prefix->SupportedFormats & CurrentFormat) {
|
|
Error(Parser.getTok().getLoc(),
|
|
"cannot represent relocation in the current file format");
|
|
return true;
|
|
}
|
|
|
|
RefKind = Prefix->VariantKind;
|
|
Parser.Lex();
|
|
|
|
if (getLexer().isNot(AsmToken::Colon)) {
|
|
Error(Parser.getTok().getLoc(), "unexpected token after prefix");
|
|
return true;
|
|
}
|
|
Parser.Lex(); // Eat the last ':'
|
|
|
|
return false;
|
|
}
|
|
|
|
/// \brief Given a mnemonic, split out possible predication code and carry
|
|
/// setting letters to form a canonical mnemonic and flags.
|
|
//
|
|
// FIXME: Would be nice to autogen this.
|
|
// FIXME: This is a bit of a maze of special cases.
|
|
StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
|
|
unsigned &PredicationCode,
|
|
bool &CarrySetting,
|
|
unsigned &ProcessorIMod,
|
|
StringRef &ITMask) {
|
|
PredicationCode = ARMCC::AL;
|
|
CarrySetting = false;
|
|
ProcessorIMod = 0;
|
|
|
|
// Ignore some mnemonics we know aren't predicated forms.
|
|
//
|
|
// FIXME: Would be nice to autogen this.
|
|
if ((Mnemonic == "movs" && isThumb()) ||
|
|
Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
|
|
Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
|
|
Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
|
|
Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
|
|
Mnemonic == "vaclt" || Mnemonic == "vacle" || Mnemonic == "hlt" ||
|
|
Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
|
|
Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
|
|
Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
|
|
Mnemonic == "fmuls" || Mnemonic == "vmaxnm" || Mnemonic == "vminnm" ||
|
|
Mnemonic == "vcvta" || Mnemonic == "vcvtn" || Mnemonic == "vcvtp" ||
|
|
Mnemonic == "vcvtm" || Mnemonic == "vrinta" || Mnemonic == "vrintn" ||
|
|
Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic == "hvc" ||
|
|
Mnemonic.startswith("vsel") || Mnemonic == "vins" || Mnemonic == "vmovx" ||
|
|
Mnemonic == "bxns" || Mnemonic == "blxns")
|
|
return Mnemonic;
|
|
|
|
// First, split out any predication code. Ignore mnemonics we know aren't
|
|
// predicated but do have a carry-set and so weren't caught above.
|
|
if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
|
|
Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
|
|
Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
|
|
Mnemonic != "sbcs" && Mnemonic != "rscs") {
|
|
unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
|
|
.Case("eq", ARMCC::EQ)
|
|
.Case("ne", ARMCC::NE)
|
|
.Case("hs", ARMCC::HS)
|
|
.Case("cs", ARMCC::HS)
|
|
.Case("lo", ARMCC::LO)
|
|
.Case("cc", ARMCC::LO)
|
|
.Case("mi", ARMCC::MI)
|
|
.Case("pl", ARMCC::PL)
|
|
.Case("vs", ARMCC::VS)
|
|
.Case("vc", ARMCC::VC)
|
|
.Case("hi", ARMCC::HI)
|
|
.Case("ls", ARMCC::LS)
|
|
.Case("ge", ARMCC::GE)
|
|
.Case("lt", ARMCC::LT)
|
|
.Case("gt", ARMCC::GT)
|
|
.Case("le", ARMCC::LE)
|
|
.Case("al", ARMCC::AL)
|
|
.Default(~0U);
|
|
if (CC != ~0U) {
|
|
Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
|
|
PredicationCode = CC;
|
|
}
|
|
}
|
|
|
|
// Next, determine if we have a carry setting bit. We explicitly ignore all
|
|
// the instructions we know end in 's'.
|
|
if (Mnemonic.endswith("s") &&
|
|
!(Mnemonic == "cps" || Mnemonic == "mls" ||
|
|
Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
|
|
Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
|
|
Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
|
|
Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
|
|
Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
|
|
Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
|
|
Mnemonic == "fmuls" || Mnemonic == "fcmps" || Mnemonic == "fcmpzs" ||
|
|
Mnemonic == "vfms" || Mnemonic == "vfnms" || Mnemonic == "fconsts" ||
|
|
(Mnemonic == "movs" && isThumb()))) {
|
|
Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
|
|
CarrySetting = true;
|
|
}
|
|
|
|
// The "cps" instruction can have a interrupt mode operand which is glued into
|
|
// the mnemonic. Check if this is the case, split it and parse the imod op
|
|
if (Mnemonic.startswith("cps")) {
|
|
// Split out any imod code.
|
|
unsigned IMod =
|
|
StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
|
|
.Case("ie", ARM_PROC::IE)
|
|
.Case("id", ARM_PROC::ID)
|
|
.Default(~0U);
|
|
if (IMod != ~0U) {
|
|
Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
|
|
ProcessorIMod = IMod;
|
|
}
|
|
}
|
|
|
|
// The "it" instruction has the condition mask on the end of the mnemonic.
|
|
if (Mnemonic.startswith("it")) {
|
|
ITMask = Mnemonic.slice(2, Mnemonic.size());
|
|
Mnemonic = Mnemonic.slice(0, 2);
|
|
}
|
|
|
|
return Mnemonic;
|
|
}
|
|
|
|
/// \brief Given a canonical mnemonic, determine if the instruction ever allows
|
|
/// inclusion of carry set or predication code operands.
|
|
//
|
|
// FIXME: It would be nice to autogen this.
|
|
void ARMAsmParser::getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
|
|
bool &CanAcceptCarrySet,
|
|
bool &CanAcceptPredicationCode) {
|
|
CanAcceptCarrySet =
|
|
Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
|
|
Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
|
|
Mnemonic == "add" || Mnemonic == "adc" || Mnemonic == "mul" ||
|
|
Mnemonic == "bic" || Mnemonic == "asr" || Mnemonic == "orr" ||
|
|
Mnemonic == "mvn" || Mnemonic == "rsb" || Mnemonic == "rsc" ||
|
|
Mnemonic == "orn" || Mnemonic == "sbc" || Mnemonic == "eor" ||
|
|
Mnemonic == "neg" || Mnemonic == "vfm" || Mnemonic == "vfnm" ||
|
|
(!isThumb() &&
|
|
(Mnemonic == "smull" || Mnemonic == "mov" || Mnemonic == "mla" ||
|
|
Mnemonic == "smlal" || Mnemonic == "umlal" || Mnemonic == "umull"));
|
|
|
|
if (Mnemonic == "bkpt" || Mnemonic == "cbnz" || Mnemonic == "setend" ||
|
|
Mnemonic == "cps" || Mnemonic == "it" || Mnemonic == "cbz" ||
|
|
Mnemonic == "trap" || Mnemonic == "hlt" || Mnemonic == "udf" ||
|
|
Mnemonic.startswith("crc32") || Mnemonic.startswith("cps") ||
|
|
Mnemonic.startswith("vsel") || Mnemonic == "vmaxnm" ||
|
|
Mnemonic == "vminnm" || Mnemonic == "vcvta" || Mnemonic == "vcvtn" ||
|
|
Mnemonic == "vcvtp" || Mnemonic == "vcvtm" || Mnemonic == "vrinta" ||
|
|
Mnemonic == "vrintn" || Mnemonic == "vrintp" || Mnemonic == "vrintm" ||
|
|
Mnemonic.startswith("aes") || Mnemonic == "hvc" || Mnemonic == "setpan" ||
|
|
Mnemonic.startswith("sha1") || Mnemonic.startswith("sha256") ||
|
|
(FullInst.startswith("vmull") && FullInst.endswith(".p64")) ||
|
|
Mnemonic == "vmovx" || Mnemonic == "vins") {
|
|
// These mnemonics are never predicable
|
|
CanAcceptPredicationCode = false;
|
|
} else if (!isThumb()) {
|
|
// Some instructions are only predicable in Thumb mode
|
|
CanAcceptPredicationCode =
|
|
Mnemonic != "cdp2" && Mnemonic != "clrex" && Mnemonic != "mcr2" &&
|
|
Mnemonic != "mcrr2" && Mnemonic != "mrc2" && Mnemonic != "mrrc2" &&
|
|
Mnemonic != "dmb" && Mnemonic != "dsb" && Mnemonic != "isb" &&
|
|
Mnemonic != "pld" && Mnemonic != "pli" && Mnemonic != "pldw" &&
|
|
Mnemonic != "ldc2" && Mnemonic != "ldc2l" && Mnemonic != "stc2" &&
|
|
Mnemonic != "stc2l" && !Mnemonic.startswith("rfe") &&
|
|
!Mnemonic.startswith("srs");
|
|
} else if (isThumbOne()) {
|
|
if (hasV6MOps())
|
|
CanAcceptPredicationCode = Mnemonic != "movs";
|
|
else
|
|
CanAcceptPredicationCode = Mnemonic != "nop" && Mnemonic != "movs";
|
|
} else
|
|
CanAcceptPredicationCode = true;
|
|
}
|
|
|
|
// \brief Some Thumb instructions have two operand forms that are not
|
|
// available as three operand, convert to two operand form if possible.
|
|
//
|
|
// FIXME: We would really like to be able to tablegen'erate this.
|
|
void ARMAsmParser::tryConvertingToTwoOperandForm(StringRef Mnemonic,
|
|
bool CarrySetting,
|
|
OperandVector &Operands) {
|
|
if (Operands.size() != 6)
|
|
return;
|
|
|
|
const auto &Op3 = static_cast<ARMOperand &>(*Operands[3]);
|
|
auto &Op4 = static_cast<ARMOperand &>(*Operands[4]);
|
|
if (!Op3.isReg() || !Op4.isReg())
|
|
return;
|
|
|
|
auto Op3Reg = Op3.getReg();
|
|
auto Op4Reg = Op4.getReg();
|
|
|
|
// For most Thumb2 cases we just generate the 3 operand form and reduce
|
|
// it in processInstruction(), but the 3 operand form of ADD (t2ADDrr)
|
|
// won't accept SP or PC so we do the transformation here taking care
|
|
// with immediate range in the 'add sp, sp #imm' case.
|
|
auto &Op5 = static_cast<ARMOperand &>(*Operands[5]);
|
|
if (isThumbTwo()) {
|
|
if (Mnemonic != "add")
|
|
return;
|
|
bool TryTransform = Op3Reg == ARM::PC || Op4Reg == ARM::PC ||
|
|
(Op5.isReg() && Op5.getReg() == ARM::PC);
|
|
if (!TryTransform) {
|
|
TryTransform = (Op3Reg == ARM::SP || Op4Reg == ARM::SP ||
|
|
(Op5.isReg() && Op5.getReg() == ARM::SP)) &&
|
|
!(Op3Reg == ARM::SP && Op4Reg == ARM::SP &&
|
|
Op5.isImm() && !Op5.isImm0_508s4());
|
|
}
|
|
if (!TryTransform)
|
|
return;
|
|
} else if (!isThumbOne())
|
|
return;
|
|
|
|
if (!(Mnemonic == "add" || Mnemonic == "sub" || Mnemonic == "and" ||
|
|
Mnemonic == "eor" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
|
|
Mnemonic == "asr" || Mnemonic == "adc" || Mnemonic == "sbc" ||
|
|
Mnemonic == "ror" || Mnemonic == "orr" || Mnemonic == "bic"))
|
|
return;
|
|
|
|
// If first 2 operands of a 3 operand instruction are the same
|
|
// then transform to 2 operand version of the same instruction
|
|
// e.g. 'adds r0, r0, #1' transforms to 'adds r0, #1'
|
|
bool Transform = Op3Reg == Op4Reg;
|
|
|
|
// For communtative operations, we might be able to transform if we swap
|
|
// Op4 and Op5. The 'ADD Rdm, SP, Rdm' form is already handled specially
|
|
// as tADDrsp.
|
|
const ARMOperand *LastOp = &Op5;
|
|
bool Swap = false;
|
|
if (!Transform && Op5.isReg() && Op3Reg == Op5.getReg() &&
|
|
((Mnemonic == "add" && Op4Reg != ARM::SP) ||
|
|
Mnemonic == "and" || Mnemonic == "eor" ||
|
|
Mnemonic == "adc" || Mnemonic == "orr")) {
|
|
Swap = true;
|
|
LastOp = &Op4;
|
|
Transform = true;
|
|
}
|
|
|
|
// If both registers are the same then remove one of them from
|
|
// the operand list, with certain exceptions.
|
|
if (Transform) {
|
|
// Don't transform 'adds Rd, Rd, Rm' or 'sub{s} Rd, Rd, Rm' because the
|
|
// 2 operand forms don't exist.
|
|
if (((Mnemonic == "add" && CarrySetting) || Mnemonic == "sub") &&
|
|
LastOp->isReg())
|
|
Transform = false;
|
|
|
|
// Don't transform 'add/sub{s} Rd, Rd, #imm' if the immediate fits into
|
|
// 3-bits because the ARMARM says not to.
|
|
if ((Mnemonic == "add" || Mnemonic == "sub") && LastOp->isImm0_7())
|
|
Transform = false;
|
|
}
|
|
|
|
if (Transform) {
|
|
if (Swap)
|
|
std::swap(Op4, Op5);
|
|
Operands.erase(Operands.begin() + 3);
|
|
}
|
|
}
|
|
|
|
bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
|
|
OperandVector &Operands) {
|
|
// FIXME: This is all horribly hacky. We really need a better way to deal
|
|
// with optional operands like this in the matcher table.
|
|
|
|
// The 'mov' mnemonic is special. One variant has a cc_out operand, while
|
|
// another does not. Specifically, the MOVW instruction does not. So we
|
|
// special case it here and remove the defaulted (non-setting) cc_out
|
|
// operand if that's the instruction we're trying to match.
|
|
//
|
|
// We do this as post-processing of the explicit operands rather than just
|
|
// conditionally adding the cc_out in the first place because we need
|
|
// to check the type of the parsed immediate operand.
|
|
if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
|
|
!static_cast<ARMOperand &>(*Operands[4]).isModImm() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isImm0_65535Expr() &&
|
|
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
|
|
return true;
|
|
|
|
// Register-register 'add' for thumb does not have a cc_out operand
|
|
// when there are only two register operands.
|
|
if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
|
|
static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
|
|
return true;
|
|
// Register-register 'add' for thumb does not have a cc_out operand
|
|
// when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
|
|
// have to check the immediate range here since Thumb2 has a variant
|
|
// that can handle a different range and has a cc_out operand.
|
|
if (((isThumb() && Mnemonic == "add") ||
|
|
(isThumbTwo() && Mnemonic == "sub")) &&
|
|
Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::SP &&
|
|
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
|
|
((Mnemonic == "add" && static_cast<ARMOperand &>(*Operands[5]).isReg()) ||
|
|
static_cast<ARMOperand &>(*Operands[5]).isImm0_1020s4()))
|
|
return true;
|
|
// For Thumb2, add/sub immediate does not have a cc_out operand for the
|
|
// imm0_4095 variant. That's the least-preferred variant when
|
|
// selecting via the generic "add" mnemonic, so to know that we
|
|
// should remove the cc_out operand, we have to explicitly check that
|
|
// it's not one of the other variants. Ugh.
|
|
if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
|
|
Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[5]).isImm()) {
|
|
// Nest conditions rather than one big 'if' statement for readability.
|
|
//
|
|
// If both registers are low, we're in an IT block, and the immediate is
|
|
// in range, we should use encoding T1 instead, which has a cc_out.
|
|
if (inITBlock() &&
|
|
isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) &&
|
|
isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) &&
|
|
static_cast<ARMOperand &>(*Operands[5]).isImm0_7())
|
|
return false;
|
|
// Check against T3. If the second register is the PC, this is an
|
|
// alternate form of ADR, which uses encoding T4, so check for that too.
|
|
if (static_cast<ARMOperand &>(*Operands[4]).getReg() != ARM::PC &&
|
|
static_cast<ARMOperand &>(*Operands[5]).isT2SOImm())
|
|
return false;
|
|
|
|
// Otherwise, we use encoding T4, which does not have a cc_out
|
|
// operand.
|
|
return true;
|
|
}
|
|
|
|
// The thumb2 multiply instruction doesn't have a CCOut register, so
|
|
// if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
|
|
// use the 16-bit encoding or not.
|
|
if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
|
|
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
|
|
static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[5]).isReg() &&
|
|
// If the registers aren't low regs, the destination reg isn't the
|
|
// same as one of the source regs, or the cc_out operand is zero
|
|
// outside of an IT block, we have to use the 32-bit encoding, so
|
|
// remove the cc_out operand.
|
|
(!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) ||
|
|
!isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) ||
|
|
!isARMLowRegister(static_cast<ARMOperand &>(*Operands[5]).getReg()) ||
|
|
!inITBlock() || (static_cast<ARMOperand &>(*Operands[3]).getReg() !=
|
|
static_cast<ARMOperand &>(*Operands[5]).getReg() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getReg() !=
|
|
static_cast<ARMOperand &>(*Operands[4]).getReg())))
|
|
return true;
|
|
|
|
// Also check the 'mul' syntax variant that doesn't specify an explicit
|
|
// destination register.
|
|
if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
|
|
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
|
|
static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isReg() &&
|
|
// If the registers aren't low regs or the cc_out operand is zero
|
|
// outside of an IT block, we have to use the 32-bit encoding, so
|
|
// remove the cc_out operand.
|
|
(!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) ||
|
|
!isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) ||
|
|
!inITBlock()))
|
|
return true;
|
|
|
|
|
|
|
|
// Register-register 'add/sub' for thumb does not have a cc_out operand
|
|
// when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
|
|
// the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
|
|
// right, this will result in better diagnostics (which operand is off)
|
|
// anyway.
|
|
if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
|
|
(Operands.size() == 5 || Operands.size() == 6) &&
|
|
static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::SP &&
|
|
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
|
|
(static_cast<ARMOperand &>(*Operands[4]).isImm() ||
|
|
(Operands.size() == 6 &&
|
|
static_cast<ARMOperand &>(*Operands[5]).isImm())))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ARMAsmParser::shouldOmitPredicateOperand(StringRef Mnemonic,
|
|
OperandVector &Operands) {
|
|
// VRINT{Z, R, X} have a predicate operand in VFP, but not in NEON
|
|
unsigned RegIdx = 3;
|
|
if ((Mnemonic == "vrintz" || Mnemonic == "vrintx" || Mnemonic == "vrintr") &&
|
|
(static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f32" ||
|
|
static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f16")) {
|
|
if (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
|
|
(static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f32" ||
|
|
static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f16"))
|
|
RegIdx = 4;
|
|
|
|
if (static_cast<ARMOperand &>(*Operands[RegIdx]).isReg() &&
|
|
(ARMMCRegisterClasses[ARM::DPRRegClassID].contains(
|
|
static_cast<ARMOperand &>(*Operands[RegIdx]).getReg()) ||
|
|
ARMMCRegisterClasses[ARM::QPRRegClassID].contains(
|
|
static_cast<ARMOperand &>(*Operands[RegIdx]).getReg())))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool isDataTypeToken(StringRef Tok) {
|
|
return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
|
|
Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
|
|
Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
|
|
Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
|
|
Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
|
|
Tok == ".f" || Tok == ".d";
|
|
}
|
|
|
|
// FIXME: This bit should probably be handled via an explicit match class
|
|
// in the .td files that matches the suffix instead of having it be
|
|
// a literal string token the way it is now.
|
|
static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
|
|
return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
|
|
}
|
|
static void applyMnemonicAliases(StringRef &Mnemonic, uint64_t Features,
|
|
unsigned VariantID);
|
|
|
|
static bool RequiresVFPRegListValidation(StringRef Inst,
|
|
bool &AcceptSinglePrecisionOnly,
|
|
bool &AcceptDoublePrecisionOnly) {
|
|
if (Inst.size() < 7)
|
|
return false;
|
|
|
|
if (Inst.startswith("fldm") || Inst.startswith("fstm")) {
|
|
StringRef AddressingMode = Inst.substr(4, 2);
|
|
if (AddressingMode == "ia" || AddressingMode == "db" ||
|
|
AddressingMode == "ea" || AddressingMode == "fd") {
|
|
AcceptSinglePrecisionOnly = Inst[6] == 's';
|
|
AcceptDoublePrecisionOnly = Inst[6] == 'd' || Inst[6] == 'x';
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// Parse an arm instruction mnemonic followed by its operands.
|
|
bool ARMAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
|
|
SMLoc NameLoc, OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
// FIXME: Can this be done via tablegen in some fashion?
|
|
bool RequireVFPRegisterListCheck;
|
|
bool AcceptSinglePrecisionOnly;
|
|
bool AcceptDoublePrecisionOnly;
|
|
RequireVFPRegisterListCheck =
|
|
RequiresVFPRegListValidation(Name, AcceptSinglePrecisionOnly,
|
|
AcceptDoublePrecisionOnly);
|
|
|
|
// Apply mnemonic aliases before doing anything else, as the destination
|
|
// mnemonic may include suffices and we want to handle them normally.
|
|
// The generic tblgen'erated code does this later, at the start of
|
|
// MatchInstructionImpl(), but that's too late for aliases that include
|
|
// any sort of suffix.
|
|
uint64_t AvailableFeatures = getAvailableFeatures();
|
|
unsigned AssemblerDialect = getParser().getAssemblerDialect();
|
|
applyMnemonicAliases(Name, AvailableFeatures, AssemblerDialect);
|
|
|
|
// First check for the ARM-specific .req directive.
|
|
if (Parser.getTok().is(AsmToken::Identifier) &&
|
|
Parser.getTok().getIdentifier() == ".req") {
|
|
parseDirectiveReq(Name, NameLoc);
|
|
// We always return 'error' for this, as we're done with this
|
|
// statement and don't need to match the 'instruction."
|
|
return true;
|
|
}
|
|
|
|
// Create the leading tokens for the mnemonic, split by '.' characters.
|
|
size_t Start = 0, Next = Name.find('.');
|
|
StringRef Mnemonic = Name.slice(Start, Next);
|
|
|
|
// Split out the predication code and carry setting flag from the mnemonic.
|
|
unsigned PredicationCode;
|
|
unsigned ProcessorIMod;
|
|
bool CarrySetting;
|
|
StringRef ITMask;
|
|
Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
|
|
ProcessorIMod, ITMask);
|
|
|
|
// In Thumb1, only the branch (B) instruction can be predicated.
|
|
if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
|
|
Parser.eatToEndOfStatement();
|
|
return Error(NameLoc, "conditional execution not supported in Thumb1");
|
|
}
|
|
|
|
Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
|
|
|
|
// Handle the IT instruction ITMask. Convert it to a bitmask. This
|
|
// is the mask as it will be for the IT encoding if the conditional
|
|
// encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
|
|
// where the conditional bit0 is zero, the instruction post-processing
|
|
// will adjust the mask accordingly.
|
|
if (Mnemonic == "it") {
|
|
SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
|
|
if (ITMask.size() > 3) {
|
|
Parser.eatToEndOfStatement();
|
|
return Error(Loc, "too many conditions on IT instruction");
|
|
}
|
|
unsigned Mask = 8;
|
|
for (unsigned i = ITMask.size(); i != 0; --i) {
|
|
char pos = ITMask[i - 1];
|
|
if (pos != 't' && pos != 'e') {
|
|
Parser.eatToEndOfStatement();
|
|
return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
|
|
}
|
|
Mask >>= 1;
|
|
if (ITMask[i - 1] == 't')
|
|
Mask |= 8;
|
|
}
|
|
Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
|
|
}
|
|
|
|
// FIXME: This is all a pretty gross hack. We should automatically handle
|
|
// optional operands like this via tblgen.
|
|
|
|
// Next, add the CCOut and ConditionCode operands, if needed.
|
|
//
|
|
// For mnemonics which can ever incorporate a carry setting bit or predication
|
|
// code, our matching model involves us always generating CCOut and
|
|
// ConditionCode operands to match the mnemonic "as written" and then we let
|
|
// the matcher deal with finding the right instruction or generating an
|
|
// appropriate error.
|
|
bool CanAcceptCarrySet, CanAcceptPredicationCode;
|
|
getMnemonicAcceptInfo(Mnemonic, Name, CanAcceptCarrySet, CanAcceptPredicationCode);
|
|
|
|
// If we had a carry-set on an instruction that can't do that, issue an
|
|
// error.
|
|
if (!CanAcceptCarrySet && CarrySetting) {
|
|
Parser.eatToEndOfStatement();
|
|
return Error(NameLoc, "instruction '" + Mnemonic +
|
|
"' can not set flags, but 's' suffix specified");
|
|
}
|
|
// If we had a predication code on an instruction that can't do that, issue an
|
|
// error.
|
|
if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
|
|
Parser.eatToEndOfStatement();
|
|
return Error(NameLoc, "instruction '" + Mnemonic +
|
|
"' is not predicable, but condition code specified");
|
|
}
|
|
|
|
// Add the carry setting operand, if necessary.
|
|
if (CanAcceptCarrySet) {
|
|
SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
|
|
Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
|
|
Loc));
|
|
}
|
|
|
|
// Add the predication code operand, if necessary.
|
|
if (CanAcceptPredicationCode) {
|
|
SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
|
|
CarrySetting);
|
|
Operands.push_back(ARMOperand::CreateCondCode(
|
|
ARMCC::CondCodes(PredicationCode), Loc));
|
|
}
|
|
|
|
// Add the processor imod operand, if necessary.
|
|
if (ProcessorIMod) {
|
|
Operands.push_back(ARMOperand::CreateImm(
|
|
MCConstantExpr::create(ProcessorIMod, getContext()),
|
|
NameLoc, NameLoc));
|
|
} else if (Mnemonic == "cps" && isMClass()) {
|
|
return Error(NameLoc, "instruction 'cps' requires effect for M-class");
|
|
}
|
|
|
|
// Add the remaining tokens in the mnemonic.
|
|
while (Next != StringRef::npos) {
|
|
Start = Next;
|
|
Next = Name.find('.', Start + 1);
|
|
StringRef ExtraToken = Name.slice(Start, Next);
|
|
|
|
// Some NEON instructions have an optional datatype suffix that is
|
|
// completely ignored. Check for that.
|
|
if (isDataTypeToken(ExtraToken) &&
|
|
doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
|
|
continue;
|
|
|
|
// For for ARM mode generate an error if the .n qualifier is used.
|
|
if (ExtraToken == ".n" && !isThumb()) {
|
|
SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
|
|
Parser.eatToEndOfStatement();
|
|
return Error(Loc, "instruction with .n (narrow) qualifier not allowed in "
|
|
"arm mode");
|
|
}
|
|
|
|
// The .n qualifier is always discarded as that is what the tables
|
|
// and matcher expect. In ARM mode the .w qualifier has no effect,
|
|
// so discard it to avoid errors that can be caused by the matcher.
|
|
if (ExtraToken != ".n" && (isThumb() || ExtraToken != ".w")) {
|
|
SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
|
|
Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
|
|
}
|
|
}
|
|
|
|
// Read the remaining operands.
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
// Read the first operand.
|
|
if (parseOperand(Operands, Mnemonic)) {
|
|
Parser.eatToEndOfStatement();
|
|
return true;
|
|
}
|
|
|
|
while (getLexer().is(AsmToken::Comma)) {
|
|
Parser.Lex(); // Eat the comma.
|
|
|
|
// Parse and remember the operand.
|
|
if (parseOperand(Operands, Mnemonic)) {
|
|
Parser.eatToEndOfStatement();
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
SMLoc Loc = getLexer().getLoc();
|
|
Parser.eatToEndOfStatement();
|
|
return Error(Loc, "unexpected token in argument list");
|
|
}
|
|
|
|
Parser.Lex(); // Consume the EndOfStatement
|
|
|
|
if (RequireVFPRegisterListCheck) {
|
|
ARMOperand &Op = static_cast<ARMOperand &>(*Operands.back());
|
|
if (AcceptSinglePrecisionOnly && !Op.isSPRRegList())
|
|
return Error(Op.getStartLoc(),
|
|
"VFP/Neon single precision register expected");
|
|
if (AcceptDoublePrecisionOnly && !Op.isDPRRegList())
|
|
return Error(Op.getStartLoc(),
|
|
"VFP/Neon double precision register expected");
|
|
}
|
|
|
|
tryConvertingToTwoOperandForm(Mnemonic, CarrySetting, Operands);
|
|
|
|
// Some instructions, mostly Thumb, have forms for the same mnemonic that
|
|
// do and don't have a cc_out optional-def operand. With some spot-checks
|
|
// of the operand list, we can figure out which variant we're trying to
|
|
// parse and adjust accordingly before actually matching. We shouldn't ever
|
|
// try to remove a cc_out operand that was explicitly set on the
|
|
// mnemonic, of course (CarrySetting == true). Reason number #317 the
|
|
// table driven matcher doesn't fit well with the ARM instruction set.
|
|
if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands))
|
|
Operands.erase(Operands.begin() + 1);
|
|
|
|
// Some instructions have the same mnemonic, but don't always
|
|
// have a predicate. Distinguish them here and delete the
|
|
// predicate if needed.
|
|
if (shouldOmitPredicateOperand(Mnemonic, Operands))
|
|
Operands.erase(Operands.begin() + 1);
|
|
|
|
// ARM mode 'blx' need special handling, as the register operand version
|
|
// is predicable, but the label operand version is not. So, we can't rely
|
|
// on the Mnemonic based checking to correctly figure out when to put
|
|
// a k_CondCode operand in the list. If we're trying to match the label
|
|
// version, remove the k_CondCode operand here.
|
|
if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
|
|
static_cast<ARMOperand &>(*Operands[2]).isImm())
|
|
Operands.erase(Operands.begin() + 1);
|
|
|
|
// Adjust operands of ldrexd/strexd to MCK_GPRPair.
|
|
// ldrexd/strexd require even/odd GPR pair. To enforce this constraint,
|
|
// a single GPRPair reg operand is used in the .td file to replace the two
|
|
// GPRs. However, when parsing from asm, the two GRPs cannot be automatically
|
|
// expressed as a GPRPair, so we have to manually merge them.
|
|
// FIXME: We would really like to be able to tablegen'erate this.
|
|
if (!isThumb() && Operands.size() > 4 &&
|
|
(Mnemonic == "ldrexd" || Mnemonic == "strexd" || Mnemonic == "ldaexd" ||
|
|
Mnemonic == "stlexd")) {
|
|
bool isLoad = (Mnemonic == "ldrexd" || Mnemonic == "ldaexd");
|
|
unsigned Idx = isLoad ? 2 : 3;
|
|
ARMOperand &Op1 = static_cast<ARMOperand &>(*Operands[Idx]);
|
|
ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[Idx + 1]);
|
|
|
|
const MCRegisterClass& MRC = MRI->getRegClass(ARM::GPRRegClassID);
|
|
// Adjust only if Op1 and Op2 are GPRs.
|
|
if (Op1.isReg() && Op2.isReg() && MRC.contains(Op1.getReg()) &&
|
|
MRC.contains(Op2.getReg())) {
|
|
unsigned Reg1 = Op1.getReg();
|
|
unsigned Reg2 = Op2.getReg();
|
|
unsigned Rt = MRI->getEncodingValue(Reg1);
|
|
unsigned Rt2 = MRI->getEncodingValue(Reg2);
|
|
|
|
// Rt2 must be Rt + 1 and Rt must be even.
|
|
if (Rt + 1 != Rt2 || (Rt & 1)) {
|
|
Error(Op2.getStartLoc(), isLoad
|
|
? "destination operands must be sequential"
|
|
: "source operands must be sequential");
|
|
return true;
|
|
}
|
|
unsigned NewReg = MRI->getMatchingSuperReg(Reg1, ARM::gsub_0,
|
|
&(MRI->getRegClass(ARM::GPRPairRegClassID)));
|
|
Operands[Idx] =
|
|
ARMOperand::CreateReg(NewReg, Op1.getStartLoc(), Op2.getEndLoc());
|
|
Operands.erase(Operands.begin() + Idx + 1);
|
|
}
|
|
}
|
|
|
|
// GNU Assembler extension (compatibility)
|
|
if ((Mnemonic == "ldrd" || Mnemonic == "strd")) {
|
|
ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[2]);
|
|
ARMOperand &Op3 = static_cast<ARMOperand &>(*Operands[3]);
|
|
if (Op3.isMem()) {
|
|
assert(Op2.isReg() && "expected register argument");
|
|
|
|
unsigned SuperReg = MRI->getMatchingSuperReg(
|
|
Op2.getReg(), ARM::gsub_0, &MRI->getRegClass(ARM::GPRPairRegClassID));
|
|
|
|
assert(SuperReg && "expected register pair");
|
|
|
|
unsigned PairedReg = MRI->getSubReg(SuperReg, ARM::gsub_1);
|
|
|
|
Operands.insert(
|
|
Operands.begin() + 3,
|
|
ARMOperand::CreateReg(PairedReg, Op2.getStartLoc(), Op2.getEndLoc()));
|
|
}
|
|
}
|
|
|
|
// FIXME: As said above, this is all a pretty gross hack. This instruction
|
|
// does not fit with other "subs" and tblgen.
|
|
// Adjust operands of B9.3.19 SUBS PC, LR, #imm (Thumb2) system instruction
|
|
// so the Mnemonic is the original name "subs" and delete the predicate
|
|
// operand so it will match the table entry.
|
|
if (isThumbTwo() && Mnemonic == "sub" && Operands.size() == 6 &&
|
|
static_cast<ARMOperand &>(*Operands[3]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::PC &&
|
|
static_cast<ARMOperand &>(*Operands[4]).isReg() &&
|
|
static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::LR &&
|
|
static_cast<ARMOperand &>(*Operands[5]).isImm()) {
|
|
Operands.front() = ARMOperand::CreateToken(Name, NameLoc);
|
|
Operands.erase(Operands.begin() + 1);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Validate context-sensitive operand constraints.
|
|
|
|
// return 'true' if register list contains non-low GPR registers,
|
|
// 'false' otherwise. If Reg is in the register list or is HiReg, set
|
|
// 'containsReg' to true.
|
|
static bool checkLowRegisterList(const MCInst &Inst, unsigned OpNo,
|
|
unsigned Reg, unsigned HiReg,
|
|
bool &containsReg) {
|
|
containsReg = false;
|
|
for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
|
|
unsigned OpReg = Inst.getOperand(i).getReg();
|
|
if (OpReg == Reg)
|
|
containsReg = true;
|
|
// Anything other than a low register isn't legal here.
|
|
if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Check if the specified regisgter is in the register list of the inst,
|
|
// starting at the indicated operand number.
|
|
static bool listContainsReg(const MCInst &Inst, unsigned OpNo, unsigned Reg) {
|
|
for (unsigned i = OpNo, e = Inst.getNumOperands(); i < e; ++i) {
|
|
unsigned OpReg = Inst.getOperand(i).getReg();
|
|
if (OpReg == Reg)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Return true if instruction has the interesting property of being
|
|
// allowed in IT blocks, but not being predicable.
|
|
static bool instIsBreakpoint(const MCInst &Inst) {
|
|
return Inst.getOpcode() == ARM::tBKPT ||
|
|
Inst.getOpcode() == ARM::BKPT ||
|
|
Inst.getOpcode() == ARM::tHLT ||
|
|
Inst.getOpcode() == ARM::HLT;
|
|
|
|
}
|
|
|
|
bool ARMAsmParser::validatetLDMRegList(const MCInst &Inst,
|
|
const OperandVector &Operands,
|
|
unsigned ListNo, bool IsARPop) {
|
|
const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]);
|
|
bool HasWritebackToken = Op.isToken() && Op.getToken() == "!";
|
|
|
|
bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP);
|
|
bool ListContainsLR = listContainsReg(Inst, ListNo, ARM::LR);
|
|
bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC);
|
|
|
|
if (!IsARPop && ListContainsSP)
|
|
return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
|
|
"SP may not be in the register list");
|
|
else if (ListContainsPC && ListContainsLR)
|
|
return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
|
|
"PC and LR may not be in the register list simultaneously");
|
|
else if (inITBlock() && !lastInITBlock() && ListContainsPC)
|
|
return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
|
|
"instruction must be outside of IT block or the last "
|
|
"instruction in an IT block");
|
|
return false;
|
|
}
|
|
|
|
bool ARMAsmParser::validatetSTMRegList(const MCInst &Inst,
|
|
const OperandVector &Operands,
|
|
unsigned ListNo) {
|
|
const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]);
|
|
bool HasWritebackToken = Op.isToken() && Op.getToken() == "!";
|
|
|
|
bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP);
|
|
bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC);
|
|
|
|
if (ListContainsSP && ListContainsPC)
|
|
return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
|
|
"SP and PC may not be in the register list");
|
|
else if (ListContainsSP)
|
|
return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
|
|
"SP may not be in the register list");
|
|
else if (ListContainsPC)
|
|
return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
|
|
"PC may not be in the register list");
|
|
return false;
|
|
}
|
|
|
|
// FIXME: We would really like to be able to tablegen'erate this.
|
|
bool ARMAsmParser::validateInstruction(MCInst &Inst,
|
|
const OperandVector &Operands) {
|
|
const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
|
|
SMLoc Loc = Operands[0]->getStartLoc();
|
|
|
|
// Check the IT block state first.
|
|
// NOTE: BKPT and HLT instructions have the interesting property of being
|
|
// allowed in IT blocks, but not being predicable. They just always execute.
|
|
if (inITBlock() && !instIsBreakpoint(Inst)) {
|
|
unsigned Bit = 1;
|
|
if (ITState.FirstCond)
|
|
ITState.FirstCond = false;
|
|
else
|
|
Bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
|
|
// The instruction must be predicable.
|
|
if (!MCID.isPredicable())
|
|
return Error(Loc, "instructions in IT block must be predicable");
|
|
unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
|
|
unsigned ITCond = Bit ? ITState.Cond :
|
|
ARMCC::getOppositeCondition(ITState.Cond);
|
|
if (Cond != ITCond) {
|
|
// Find the condition code Operand to get its SMLoc information.
|
|
SMLoc CondLoc;
|
|
for (unsigned I = 1; I < Operands.size(); ++I)
|
|
if (static_cast<ARMOperand &>(*Operands[I]).isCondCode())
|
|
CondLoc = Operands[I]->getStartLoc();
|
|
return Error(CondLoc, "incorrect condition in IT block; got '" +
|
|
StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
|
|
"', but expected '" +
|
|
ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
|
|
}
|
|
// Check for non-'al' condition codes outside of the IT block.
|
|
} else if (isThumbTwo() && MCID.isPredicable() &&
|
|
Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
|
|
ARMCC::AL && Inst.getOpcode() != ARM::tBcc &&
|
|
Inst.getOpcode() != ARM::t2Bcc)
|
|
return Error(Loc, "predicated instructions must be in IT block");
|
|
|
|
const unsigned Opcode = Inst.getOpcode();
|
|
switch (Opcode) {
|
|
case ARM::LDRD:
|
|
case ARM::LDRD_PRE:
|
|
case ARM::LDRD_POST: {
|
|
const unsigned RtReg = Inst.getOperand(0).getReg();
|
|
|
|
// Rt can't be R14.
|
|
if (RtReg == ARM::LR)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"Rt can't be R14");
|
|
|
|
const unsigned Rt = MRI->getEncodingValue(RtReg);
|
|
// Rt must be even-numbered.
|
|
if ((Rt & 1) == 1)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"Rt must be even-numbered");
|
|
|
|
// Rt2 must be Rt + 1.
|
|
const unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
|
|
if (Rt2 != Rt + 1)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"destination operands must be sequential");
|
|
|
|
if (Opcode == ARM::LDRD_PRE || Opcode == ARM::LDRD_POST) {
|
|
const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(3).getReg());
|
|
// For addressing modes with writeback, the base register needs to be
|
|
// different from the destination registers.
|
|
if (Rn == Rt || Rn == Rt2)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"base register needs to be different from destination "
|
|
"registers");
|
|
}
|
|
|
|
return false;
|
|
}
|
|
case ARM::t2LDRDi8:
|
|
case ARM::t2LDRD_PRE:
|
|
case ARM::t2LDRD_POST: {
|
|
// Rt2 must be different from Rt.
|
|
unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
|
|
unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
|
|
if (Rt2 == Rt)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"destination operands can't be identical");
|
|
return false;
|
|
}
|
|
case ARM::t2BXJ: {
|
|
const unsigned RmReg = Inst.getOperand(0).getReg();
|
|
// Rm = SP is no longer unpredictable in v8-A
|
|
if (RmReg == ARM::SP && !hasV8Ops())
|
|
return Error(Operands[2]->getStartLoc(),
|
|
"r13 (SP) is an unpredictable operand to BXJ");
|
|
return false;
|
|
}
|
|
case ARM::STRD: {
|
|
// Rt2 must be Rt + 1.
|
|
unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
|
|
unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
|
|
if (Rt2 != Rt + 1)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"source operands must be sequential");
|
|
return false;
|
|
}
|
|
case ARM::STRD_PRE:
|
|
case ARM::STRD_POST: {
|
|
// Rt2 must be Rt + 1.
|
|
unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg());
|
|
unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(2).getReg());
|
|
if (Rt2 != Rt + 1)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"source operands must be sequential");
|
|
return false;
|
|
}
|
|
case ARM::STR_PRE_IMM:
|
|
case ARM::STR_PRE_REG:
|
|
case ARM::STR_POST_IMM:
|
|
case ARM::STR_POST_REG:
|
|
case ARM::STRH_PRE:
|
|
case ARM::STRH_POST:
|
|
case ARM::STRB_PRE_IMM:
|
|
case ARM::STRB_PRE_REG:
|
|
case ARM::STRB_POST_IMM:
|
|
case ARM::STRB_POST_REG: {
|
|
// Rt must be different from Rn.
|
|
const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg());
|
|
const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg());
|
|
|
|
if (Rt == Rn)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"source register and base register can't be identical");
|
|
return false;
|
|
}
|
|
case ARM::LDR_PRE_IMM:
|
|
case ARM::LDR_PRE_REG:
|
|
case ARM::LDR_POST_IMM:
|
|
case ARM::LDR_POST_REG:
|
|
case ARM::LDRH_PRE:
|
|
case ARM::LDRH_POST:
|
|
case ARM::LDRSH_PRE:
|
|
case ARM::LDRSH_POST:
|
|
case ARM::LDRB_PRE_IMM:
|
|
case ARM::LDRB_PRE_REG:
|
|
case ARM::LDRB_POST_IMM:
|
|
case ARM::LDRB_POST_REG:
|
|
case ARM::LDRSB_PRE:
|
|
case ARM::LDRSB_POST: {
|
|
// Rt must be different from Rn.
|
|
const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
|
|
const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg());
|
|
|
|
if (Rt == Rn)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"destination register and base register can't be identical");
|
|
return false;
|
|
}
|
|
case ARM::SBFX:
|
|
case ARM::UBFX: {
|
|
// Width must be in range [1, 32-lsb].
|
|
unsigned LSB = Inst.getOperand(2).getImm();
|
|
unsigned Widthm1 = Inst.getOperand(3).getImm();
|
|
if (Widthm1 >= 32 - LSB)
|
|
return Error(Operands[5]->getStartLoc(),
|
|
"bitfield width must be in range [1,32-lsb]");
|
|
return false;
|
|
}
|
|
// Notionally handles ARM::tLDMIA_UPD too.
|
|
case ARM::tLDMIA: {
|
|
// If we're parsing Thumb2, the .w variant is available and handles
|
|
// most cases that are normally illegal for a Thumb1 LDM instruction.
|
|
// We'll make the transformation in processInstruction() if necessary.
|
|
//
|
|
// Thumb LDM instructions are writeback iff the base register is not
|
|
// in the register list.
|
|
unsigned Rn = Inst.getOperand(0).getReg();
|
|
bool HasWritebackToken =
|
|
(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getToken() == "!");
|
|
bool ListContainsBase;
|
|
if (checkLowRegisterList(Inst, 3, Rn, 0, ListContainsBase) && !isThumbTwo())
|
|
return Error(Operands[3 + HasWritebackToken]->getStartLoc(),
|
|
"registers must be in range r0-r7");
|
|
// If we should have writeback, then there should be a '!' token.
|
|
if (!ListContainsBase && !HasWritebackToken && !isThumbTwo())
|
|
return Error(Operands[2]->getStartLoc(),
|
|
"writeback operator '!' expected");
|
|
// If we should not have writeback, there must not be a '!'. This is
|
|
// true even for the 32-bit wide encodings.
|
|
if (ListContainsBase && HasWritebackToken)
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"writeback operator '!' not allowed when base register "
|
|
"in register list");
|
|
|
|
if (validatetLDMRegList(Inst, Operands, 3))
|
|
return true;
|
|
break;
|
|
}
|
|
case ARM::LDMIA_UPD:
|
|
case ARM::LDMDB_UPD:
|
|
case ARM::LDMIB_UPD:
|
|
case ARM::LDMDA_UPD:
|
|
// ARM variants loading and updating the same register are only officially
|
|
// UNPREDICTABLE on v7 upwards. Goodness knows what they did before.
|
|
if (!hasV7Ops())
|
|
break;
|
|
if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
|
|
return Error(Operands.back()->getStartLoc(),
|
|
"writeback register not allowed in register list");
|
|
break;
|
|
case ARM::t2LDMIA:
|
|
case ARM::t2LDMDB:
|
|
if (validatetLDMRegList(Inst, Operands, 3))
|
|
return true;
|
|
break;
|
|
case ARM::t2STMIA:
|
|
case ARM::t2STMDB:
|
|
if (validatetSTMRegList(Inst, Operands, 3))
|
|
return true;
|
|
break;
|
|
case ARM::t2LDMIA_UPD:
|
|
case ARM::t2LDMDB_UPD:
|
|
case ARM::t2STMIA_UPD:
|
|
case ARM::t2STMDB_UPD: {
|
|
if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
|
|
return Error(Operands.back()->getStartLoc(),
|
|
"writeback register not allowed in register list");
|
|
|
|
if (Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD) {
|
|
if (validatetLDMRegList(Inst, Operands, 3))
|
|
return true;
|
|
} else {
|
|
if (validatetSTMRegList(Inst, Operands, 3))
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::sysLDMIA_UPD:
|
|
case ARM::sysLDMDA_UPD:
|
|
case ARM::sysLDMDB_UPD:
|
|
case ARM::sysLDMIB_UPD:
|
|
if (!listContainsReg(Inst, 3, ARM::PC))
|
|
return Error(Operands[4]->getStartLoc(),
|
|
"writeback register only allowed on system LDM "
|
|
"if PC in register-list");
|
|
break;
|
|
case ARM::sysSTMIA_UPD:
|
|
case ARM::sysSTMDA_UPD:
|
|
case ARM::sysSTMDB_UPD:
|
|
case ARM::sysSTMIB_UPD:
|
|
return Error(Operands[2]->getStartLoc(),
|
|
"system STM cannot have writeback register");
|
|
case ARM::tMUL: {
|
|
// The second source operand must be the same register as the destination
|
|
// operand.
|
|
//
|
|
// In this case, we must directly check the parsed operands because the
|
|
// cvtThumbMultiply() function is written in such a way that it guarantees
|
|
// this first statement is always true for the new Inst. Essentially, the
|
|
// destination is unconditionally copied into the second source operand
|
|
// without checking to see if it matches what we actually parsed.
|
|
if (Operands.size() == 6 && (((ARMOperand &)*Operands[3]).getReg() !=
|
|
((ARMOperand &)*Operands[5]).getReg()) &&
|
|
(((ARMOperand &)*Operands[3]).getReg() !=
|
|
((ARMOperand &)*Operands[4]).getReg())) {
|
|
return Error(Operands[3]->getStartLoc(),
|
|
"destination register must match source register");
|
|
}
|
|
break;
|
|
}
|
|
// Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
|
|
// so only issue a diagnostic for thumb1. The instructions will be
|
|
// switched to the t2 encodings in processInstruction() if necessary.
|
|
case ARM::tPOP: {
|
|
bool ListContainsBase;
|
|
if (checkLowRegisterList(Inst, 2, 0, ARM::PC, ListContainsBase) &&
|
|
!isThumbTwo())
|
|
return Error(Operands[2]->getStartLoc(),
|
|
"registers must be in range r0-r7 or pc");
|
|
if (validatetLDMRegList(Inst, Operands, 2, !isMClass()))
|
|
return true;
|
|
break;
|
|
}
|
|
case ARM::tPUSH: {
|
|
bool ListContainsBase;
|
|
if (checkLowRegisterList(Inst, 2, 0, ARM::LR, ListContainsBase) &&
|
|
!isThumbTwo())
|
|
return Error(Operands[2]->getStartLoc(),
|
|
"registers must be in range r0-r7 or lr");
|
|
if (validatetSTMRegList(Inst, Operands, 2))
|
|
return true;
|
|
break;
|
|
}
|
|
case ARM::tSTMIA_UPD: {
|
|
bool ListContainsBase, InvalidLowList;
|
|
InvalidLowList = checkLowRegisterList(Inst, 4, Inst.getOperand(0).getReg(),
|
|
0, ListContainsBase);
|
|
if (InvalidLowList && !isThumbTwo())
|
|
return Error(Operands[4]->getStartLoc(),
|
|
"registers must be in range r0-r7");
|
|
|
|
// This would be converted to a 32-bit stm, but that's not valid if the
|
|
// writeback register is in the list.
|
|
if (InvalidLowList && ListContainsBase)
|
|
return Error(Operands[4]->getStartLoc(),
|
|
"writeback operator '!' not allowed when base register "
|
|
"in register list");
|
|
|
|
if (validatetSTMRegList(Inst, Operands, 4))
|
|
return true;
|
|
break;
|
|
}
|
|
case ARM::tADDrSP: {
|
|
// If the non-SP source operand and the destination operand are not the
|
|
// same, we need thumb2 (for the wide encoding), or we have an error.
|
|
if (!isThumbTwo() &&
|
|
Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
|
|
return Error(Operands[4]->getStartLoc(),
|
|
"source register must be the same as destination");
|
|
}
|
|
break;
|
|
}
|
|
// Final range checking for Thumb unconditional branch instructions.
|
|
case ARM::tB:
|
|
if (!(static_cast<ARMOperand &>(*Operands[2])).isSignedOffset<11, 1>())
|
|
return Error(Operands[2]->getStartLoc(), "branch target out of range");
|
|
break;
|
|
case ARM::t2B: {
|
|
int op = (Operands[2]->isImm()) ? 2 : 3;
|
|
if (!static_cast<ARMOperand &>(*Operands[op]).isSignedOffset<24, 1>())
|
|
return Error(Operands[op]->getStartLoc(), "branch target out of range");
|
|
break;
|
|
}
|
|
// Final range checking for Thumb conditional branch instructions.
|
|
case ARM::tBcc:
|
|
if (!static_cast<ARMOperand &>(*Operands[2]).isSignedOffset<8, 1>())
|
|
return Error(Operands[2]->getStartLoc(), "branch target out of range");
|
|
break;
|
|
case ARM::t2Bcc: {
|
|
int Op = (Operands[2]->isImm()) ? 2 : 3;
|
|
if (!static_cast<ARMOperand &>(*Operands[Op]).isSignedOffset<20, 1>())
|
|
return Error(Operands[Op]->getStartLoc(), "branch target out of range");
|
|
break;
|
|
}
|
|
case ARM::MOVi16:
|
|
case ARM::t2MOVi16:
|
|
case ARM::t2MOVTi16:
|
|
{
|
|
// We want to avoid misleadingly allowing something like "mov r0, <symbol>"
|
|
// especially when we turn it into a movw and the expression <symbol> does
|
|
// not have a :lower16: or :upper16 as part of the expression. We don't
|
|
// want the behavior of silently truncating, which can be unexpected and
|
|
// lead to bugs that are difficult to find since this is an easy mistake
|
|
// to make.
|
|
int i = (Operands[3]->isImm()) ? 3 : 4;
|
|
ARMOperand &Op = static_cast<ARMOperand &>(*Operands[i]);
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm());
|
|
if (CE) break;
|
|
const MCExpr *E = dyn_cast<MCExpr>(Op.getImm());
|
|
if (!E) break;
|
|
const ARMMCExpr *ARM16Expr = dyn_cast<ARMMCExpr>(E);
|
|
if (!ARM16Expr || (ARM16Expr->getKind() != ARMMCExpr::VK_ARM_HI16 &&
|
|
ARM16Expr->getKind() != ARMMCExpr::VK_ARM_LO16))
|
|
return Error(
|
|
Op.getStartLoc(),
|
|
"immediate expression for mov requires :lower16: or :upper16");
|
|
break;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static unsigned getRealVSTOpcode(unsigned Opc, unsigned &Spacing) {
|
|
switch(Opc) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
// VST1LN
|
|
case ARM::VST1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
|
|
case ARM::VST1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
|
|
case ARM::VST1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
|
|
case ARM::VST1LNdWB_register_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
|
|
case ARM::VST1LNdWB_register_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
|
|
case ARM::VST1LNdWB_register_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
|
|
case ARM::VST1LNdAsm_8: Spacing = 1; return ARM::VST1LNd8;
|
|
case ARM::VST1LNdAsm_16: Spacing = 1; return ARM::VST1LNd16;
|
|
case ARM::VST1LNdAsm_32: Spacing = 1; return ARM::VST1LNd32;
|
|
|
|
// VST2LN
|
|
case ARM::VST2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
|
|
case ARM::VST2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
|
|
case ARM::VST2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
|
|
case ARM::VST2LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
|
|
case ARM::VST2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
|
|
|
|
case ARM::VST2LNdWB_register_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
|
|
case ARM::VST2LNdWB_register_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
|
|
case ARM::VST2LNdWB_register_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
|
|
case ARM::VST2LNqWB_register_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
|
|
case ARM::VST2LNqWB_register_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
|
|
|
|
case ARM::VST2LNdAsm_8: Spacing = 1; return ARM::VST2LNd8;
|
|
case ARM::VST2LNdAsm_16: Spacing = 1; return ARM::VST2LNd16;
|
|
case ARM::VST2LNdAsm_32: Spacing = 1; return ARM::VST2LNd32;
|
|
case ARM::VST2LNqAsm_16: Spacing = 2; return ARM::VST2LNq16;
|
|
case ARM::VST2LNqAsm_32: Spacing = 2; return ARM::VST2LNq32;
|
|
|
|
// VST3LN
|
|
case ARM::VST3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
|
|
case ARM::VST3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
|
|
case ARM::VST3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
|
|
case ARM::VST3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNq16_UPD;
|
|
case ARM::VST3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
|
|
case ARM::VST3LNdWB_register_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
|
|
case ARM::VST3LNdWB_register_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
|
|
case ARM::VST3LNdWB_register_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
|
|
case ARM::VST3LNqWB_register_Asm_16: Spacing = 2; return ARM::VST3LNq16_UPD;
|
|
case ARM::VST3LNqWB_register_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
|
|
case ARM::VST3LNdAsm_8: Spacing = 1; return ARM::VST3LNd8;
|
|
case ARM::VST3LNdAsm_16: Spacing = 1; return ARM::VST3LNd16;
|
|
case ARM::VST3LNdAsm_32: Spacing = 1; return ARM::VST3LNd32;
|
|
case ARM::VST3LNqAsm_16: Spacing = 2; return ARM::VST3LNq16;
|
|
case ARM::VST3LNqAsm_32: Spacing = 2; return ARM::VST3LNq32;
|
|
|
|
// VST3
|
|
case ARM::VST3dWB_fixed_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
|
|
case ARM::VST3dWB_fixed_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
|
|
case ARM::VST3dWB_fixed_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
|
|
case ARM::VST3qWB_fixed_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
|
|
case ARM::VST3qWB_fixed_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
|
|
case ARM::VST3qWB_fixed_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
|
|
case ARM::VST3dWB_register_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
|
|
case ARM::VST3dWB_register_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
|
|
case ARM::VST3dWB_register_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
|
|
case ARM::VST3qWB_register_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
|
|
case ARM::VST3qWB_register_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
|
|
case ARM::VST3qWB_register_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
|
|
case ARM::VST3dAsm_8: Spacing = 1; return ARM::VST3d8;
|
|
case ARM::VST3dAsm_16: Spacing = 1; return ARM::VST3d16;
|
|
case ARM::VST3dAsm_32: Spacing = 1; return ARM::VST3d32;
|
|
case ARM::VST3qAsm_8: Spacing = 2; return ARM::VST3q8;
|
|
case ARM::VST3qAsm_16: Spacing = 2; return ARM::VST3q16;
|
|
case ARM::VST3qAsm_32: Spacing = 2; return ARM::VST3q32;
|
|
|
|
// VST4LN
|
|
case ARM::VST4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
|
|
case ARM::VST4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
|
|
case ARM::VST4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
|
|
case ARM::VST4LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNq16_UPD;
|
|
case ARM::VST4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
|
|
case ARM::VST4LNdWB_register_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
|
|
case ARM::VST4LNdWB_register_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
|
|
case ARM::VST4LNdWB_register_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
|
|
case ARM::VST4LNqWB_register_Asm_16: Spacing = 2; return ARM::VST4LNq16_UPD;
|
|
case ARM::VST4LNqWB_register_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
|
|
case ARM::VST4LNdAsm_8: Spacing = 1; return ARM::VST4LNd8;
|
|
case ARM::VST4LNdAsm_16: Spacing = 1; return ARM::VST4LNd16;
|
|
case ARM::VST4LNdAsm_32: Spacing = 1; return ARM::VST4LNd32;
|
|
case ARM::VST4LNqAsm_16: Spacing = 2; return ARM::VST4LNq16;
|
|
case ARM::VST4LNqAsm_32: Spacing = 2; return ARM::VST4LNq32;
|
|
|
|
// VST4
|
|
case ARM::VST4dWB_fixed_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
|
|
case ARM::VST4dWB_fixed_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
|
|
case ARM::VST4dWB_fixed_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
|
|
case ARM::VST4qWB_fixed_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
|
|
case ARM::VST4qWB_fixed_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
|
|
case ARM::VST4qWB_fixed_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
|
|
case ARM::VST4dWB_register_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
|
|
case ARM::VST4dWB_register_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
|
|
case ARM::VST4dWB_register_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
|
|
case ARM::VST4qWB_register_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
|
|
case ARM::VST4qWB_register_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
|
|
case ARM::VST4qWB_register_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
|
|
case ARM::VST4dAsm_8: Spacing = 1; return ARM::VST4d8;
|
|
case ARM::VST4dAsm_16: Spacing = 1; return ARM::VST4d16;
|
|
case ARM::VST4dAsm_32: Spacing = 1; return ARM::VST4d32;
|
|
case ARM::VST4qAsm_8: Spacing = 2; return ARM::VST4q8;
|
|
case ARM::VST4qAsm_16: Spacing = 2; return ARM::VST4q16;
|
|
case ARM::VST4qAsm_32: Spacing = 2; return ARM::VST4q32;
|
|
}
|
|
}
|
|
|
|
static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) {
|
|
switch(Opc) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
// VLD1LN
|
|
case ARM::VLD1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
|
|
case ARM::VLD1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
|
|
case ARM::VLD1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
|
|
case ARM::VLD1LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
|
|
case ARM::VLD1LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
|
|
case ARM::VLD1LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
|
|
case ARM::VLD1LNdAsm_8: Spacing = 1; return ARM::VLD1LNd8;
|
|
case ARM::VLD1LNdAsm_16: Spacing = 1; return ARM::VLD1LNd16;
|
|
case ARM::VLD1LNdAsm_32: Spacing = 1; return ARM::VLD1LNd32;
|
|
|
|
// VLD2LN
|
|
case ARM::VLD2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
|
|
case ARM::VLD2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
|
|
case ARM::VLD2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
|
|
case ARM::VLD2LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNq16_UPD;
|
|
case ARM::VLD2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
|
|
case ARM::VLD2LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
|
|
case ARM::VLD2LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
|
|
case ARM::VLD2LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
|
|
case ARM::VLD2LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD2LNq16_UPD;
|
|
case ARM::VLD2LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
|
|
case ARM::VLD2LNdAsm_8: Spacing = 1; return ARM::VLD2LNd8;
|
|
case ARM::VLD2LNdAsm_16: Spacing = 1; return ARM::VLD2LNd16;
|
|
case ARM::VLD2LNdAsm_32: Spacing = 1; return ARM::VLD2LNd32;
|
|
case ARM::VLD2LNqAsm_16: Spacing = 2; return ARM::VLD2LNq16;
|
|
case ARM::VLD2LNqAsm_32: Spacing = 2; return ARM::VLD2LNq32;
|
|
|
|
// VLD3DUP
|
|
case ARM::VLD3DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
|
|
case ARM::VLD3DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
|
|
case ARM::VLD3DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
|
|
case ARM::VLD3DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPq8_UPD;
|
|
case ARM::VLD3DUPqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
|
|
case ARM::VLD3DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
|
|
case ARM::VLD3DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
|
|
case ARM::VLD3DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
|
|
case ARM::VLD3DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
|
|
case ARM::VLD3DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD3DUPq8_UPD;
|
|
case ARM::VLD3DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
|
|
case ARM::VLD3DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
|
|
case ARM::VLD3DUPdAsm_8: Spacing = 1; return ARM::VLD3DUPd8;
|
|
case ARM::VLD3DUPdAsm_16: Spacing = 1; return ARM::VLD3DUPd16;
|
|
case ARM::VLD3DUPdAsm_32: Spacing = 1; return ARM::VLD3DUPd32;
|
|
case ARM::VLD3DUPqAsm_8: Spacing = 2; return ARM::VLD3DUPq8;
|
|
case ARM::VLD3DUPqAsm_16: Spacing = 2; return ARM::VLD3DUPq16;
|
|
case ARM::VLD3DUPqAsm_32: Spacing = 2; return ARM::VLD3DUPq32;
|
|
|
|
// VLD3LN
|
|
case ARM::VLD3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
|
|
case ARM::VLD3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
|
|
case ARM::VLD3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
|
|
case ARM::VLD3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNq16_UPD;
|
|
case ARM::VLD3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
|
|
case ARM::VLD3LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
|
|
case ARM::VLD3LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
|
|
case ARM::VLD3LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
|
|
case ARM::VLD3LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD3LNq16_UPD;
|
|
case ARM::VLD3LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
|
|
case ARM::VLD3LNdAsm_8: Spacing = 1; return ARM::VLD3LNd8;
|
|
case ARM::VLD3LNdAsm_16: Spacing = 1; return ARM::VLD3LNd16;
|
|
case ARM::VLD3LNdAsm_32: Spacing = 1; return ARM::VLD3LNd32;
|
|
case ARM::VLD3LNqAsm_16: Spacing = 2; return ARM::VLD3LNq16;
|
|
case ARM::VLD3LNqAsm_32: Spacing = 2; return ARM::VLD3LNq32;
|
|
|
|
// VLD3
|
|
case ARM::VLD3dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
|
|
case ARM::VLD3dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
|
|
case ARM::VLD3dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
|
|
case ARM::VLD3qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
|
|
case ARM::VLD3qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
|
|
case ARM::VLD3qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
|
|
case ARM::VLD3dWB_register_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
|
|
case ARM::VLD3dWB_register_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
|
|
case ARM::VLD3dWB_register_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
|
|
case ARM::VLD3qWB_register_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
|
|
case ARM::VLD3qWB_register_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
|
|
case ARM::VLD3qWB_register_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
|
|
case ARM::VLD3dAsm_8: Spacing = 1; return ARM::VLD3d8;
|
|
case ARM::VLD3dAsm_16: Spacing = 1; return ARM::VLD3d16;
|
|
case ARM::VLD3dAsm_32: Spacing = 1; return ARM::VLD3d32;
|
|
case ARM::VLD3qAsm_8: Spacing = 2; return ARM::VLD3q8;
|
|
case ARM::VLD3qAsm_16: Spacing = 2; return ARM::VLD3q16;
|
|
case ARM::VLD3qAsm_32: Spacing = 2; return ARM::VLD3q32;
|
|
|
|
// VLD4LN
|
|
case ARM::VLD4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
|
|
case ARM::VLD4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
|
|
case ARM::VLD4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
|
|
case ARM::VLD4LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
|
|
case ARM::VLD4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
|
|
case ARM::VLD4LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
|
|
case ARM::VLD4LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
|
|
case ARM::VLD4LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
|
|
case ARM::VLD4LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
|
|
case ARM::VLD4LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
|
|
case ARM::VLD4LNdAsm_8: Spacing = 1; return ARM::VLD4LNd8;
|
|
case ARM::VLD4LNdAsm_16: Spacing = 1; return ARM::VLD4LNd16;
|
|
case ARM::VLD4LNdAsm_32: Spacing = 1; return ARM::VLD4LNd32;
|
|
case ARM::VLD4LNqAsm_16: Spacing = 2; return ARM::VLD4LNq16;
|
|
case ARM::VLD4LNqAsm_32: Spacing = 2; return ARM::VLD4LNq32;
|
|
|
|
// VLD4DUP
|
|
case ARM::VLD4DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
|
|
case ARM::VLD4DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
|
|
case ARM::VLD4DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
|
|
case ARM::VLD4DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPq8_UPD;
|
|
case ARM::VLD4DUPqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPq16_UPD;
|
|
case ARM::VLD4DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
|
|
case ARM::VLD4DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
|
|
case ARM::VLD4DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
|
|
case ARM::VLD4DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
|
|
case ARM::VLD4DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD4DUPq8_UPD;
|
|
case ARM::VLD4DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD4DUPq16_UPD;
|
|
case ARM::VLD4DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
|
|
case ARM::VLD4DUPdAsm_8: Spacing = 1; return ARM::VLD4DUPd8;
|
|
case ARM::VLD4DUPdAsm_16: Spacing = 1; return ARM::VLD4DUPd16;
|
|
case ARM::VLD4DUPdAsm_32: Spacing = 1; return ARM::VLD4DUPd32;
|
|
case ARM::VLD4DUPqAsm_8: Spacing = 2; return ARM::VLD4DUPq8;
|
|
case ARM::VLD4DUPqAsm_16: Spacing = 2; return ARM::VLD4DUPq16;
|
|
case ARM::VLD4DUPqAsm_32: Spacing = 2; return ARM::VLD4DUPq32;
|
|
|
|
// VLD4
|
|
case ARM::VLD4dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
|
|
case ARM::VLD4dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
|
|
case ARM::VLD4dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
|
|
case ARM::VLD4qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
|
|
case ARM::VLD4qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
|
|
case ARM::VLD4qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
|
|
case ARM::VLD4dWB_register_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
|
|
case ARM::VLD4dWB_register_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
|
|
case ARM::VLD4dWB_register_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
|
|
case ARM::VLD4qWB_register_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
|
|
case ARM::VLD4qWB_register_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
|
|
case ARM::VLD4qWB_register_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
|
|
case ARM::VLD4dAsm_8: Spacing = 1; return ARM::VLD4d8;
|
|
case ARM::VLD4dAsm_16: Spacing = 1; return ARM::VLD4d16;
|
|
case ARM::VLD4dAsm_32: Spacing = 1; return ARM::VLD4d32;
|
|
case ARM::VLD4qAsm_8: Spacing = 2; return ARM::VLD4q8;
|
|
case ARM::VLD4qAsm_16: Spacing = 2; return ARM::VLD4q16;
|
|
case ARM::VLD4qAsm_32: Spacing = 2; return ARM::VLD4q32;
|
|
}
|
|
}
|
|
|
|
bool ARMAsmParser::processInstruction(MCInst &Inst,
|
|
const OperandVector &Operands,
|
|
MCStreamer &Out) {
|
|
switch (Inst.getOpcode()) {
|
|
// Alias for alternate form of 'ldr{,b}t Rt, [Rn], #imm' instruction.
|
|
case ARM::LDRT_POST:
|
|
case ARM::LDRBT_POST: {
|
|
const unsigned Opcode =
|
|
(Inst.getOpcode() == ARM::LDRT_POST) ? ARM::LDRT_POST_IMM
|
|
: ARM::LDRBT_POST_IMM;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(Opcode);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(MCOperand::createReg(0));
|
|
TmpInst.addOperand(MCOperand::createImm(0));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
// Alias for alternate form of 'str{,b}t Rt, [Rn], #imm' instruction.
|
|
case ARM::STRT_POST:
|
|
case ARM::STRBT_POST: {
|
|
const unsigned Opcode =
|
|
(Inst.getOpcode() == ARM::STRT_POST) ? ARM::STRT_POST_IMM
|
|
: ARM::STRBT_POST_IMM;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(Opcode);
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(MCOperand::createReg(0));
|
|
TmpInst.addOperand(MCOperand::createImm(0));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
// Alias for alternate form of 'ADR Rd, #imm' instruction.
|
|
case ARM::ADDri: {
|
|
if (Inst.getOperand(1).getReg() != ARM::PC ||
|
|
Inst.getOperand(5).getReg() != 0 ||
|
|
!(Inst.getOperand(2).isExpr() || Inst.getOperand(2).isImm()))
|
|
return false;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::ADR);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
if (Inst.getOperand(2).isImm()) {
|
|
// Immediate (mod_imm) will be in its encoded form, we must unencode it
|
|
// before passing it to the ADR instruction.
|
|
unsigned Enc = Inst.getOperand(2).getImm();
|
|
TmpInst.addOperand(MCOperand::createImm(
|
|
ARM_AM::rotr32(Enc & 0xFF, (Enc & 0xF00) >> 7)));
|
|
} else {
|
|
// Turn PC-relative expression into absolute expression.
|
|
// Reading PC provides the start of the current instruction + 8 and
|
|
// the transform to adr is biased by that.
|
|
MCSymbol *Dot = getContext().createTempSymbol();
|
|
Out.EmitLabel(Dot);
|
|
const MCExpr *OpExpr = Inst.getOperand(2).getExpr();
|
|
const MCExpr *InstPC = MCSymbolRefExpr::create(Dot,
|
|
MCSymbolRefExpr::VK_None,
|
|
getContext());
|
|
const MCExpr *Const8 = MCConstantExpr::create(8, getContext());
|
|
const MCExpr *ReadPC = MCBinaryExpr::createAdd(InstPC, Const8,
|
|
getContext());
|
|
const MCExpr *FixupAddr = MCBinaryExpr::createAdd(ReadPC, OpExpr,
|
|
getContext());
|
|
TmpInst.addOperand(MCOperand::createExpr(FixupAddr));
|
|
}
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
// Aliases for alternate PC+imm syntax of LDR instructions.
|
|
case ARM::t2LDRpcrel:
|
|
// Select the narrow version if the immediate will fit.
|
|
if (Inst.getOperand(1).getImm() > 0 &&
|
|
Inst.getOperand(1).getImm() <= 0xff &&
|
|
!(static_cast<ARMOperand &>(*Operands[2]).isToken() &&
|
|
static_cast<ARMOperand &>(*Operands[2]).getToken() == ".w"))
|
|
Inst.setOpcode(ARM::tLDRpci);
|
|
else
|
|
Inst.setOpcode(ARM::t2LDRpci);
|
|
return true;
|
|
case ARM::t2LDRBpcrel:
|
|
Inst.setOpcode(ARM::t2LDRBpci);
|
|
return true;
|
|
case ARM::t2LDRHpcrel:
|
|
Inst.setOpcode(ARM::t2LDRHpci);
|
|
return true;
|
|
case ARM::t2LDRSBpcrel:
|
|
Inst.setOpcode(ARM::t2LDRSBpci);
|
|
return true;
|
|
case ARM::t2LDRSHpcrel:
|
|
Inst.setOpcode(ARM::t2LDRSHpci);
|
|
return true;
|
|
case ARM::LDRConstPool:
|
|
case ARM::tLDRConstPool:
|
|
case ARM::t2LDRConstPool: {
|
|
// Pseudo instruction ldr rt, =immediate is converted to a
|
|
// MOV rt, immediate if immediate is known and representable
|
|
// otherwise we create a constant pool entry that we load from.
|
|
MCInst TmpInst;
|
|
if (Inst.getOpcode() == ARM::LDRConstPool)
|
|
TmpInst.setOpcode(ARM::LDRi12);
|
|
else if (Inst.getOpcode() == ARM::tLDRConstPool)
|
|
TmpInst.setOpcode(ARM::tLDRpci);
|
|
else if (Inst.getOpcode() == ARM::t2LDRConstPool)
|
|
TmpInst.setOpcode(ARM::t2LDRpci);
|
|
const ARMOperand &PoolOperand =
|
|
static_cast<ARMOperand &>(*Operands[3]);
|
|
const MCExpr *SubExprVal = PoolOperand.getConstantPoolImm();
|
|
// If SubExprVal is a constant we may be able to use a MOV
|
|
if (isa<MCConstantExpr>(SubExprVal) &&
|
|
Inst.getOperand(0).getReg() != ARM::PC &&
|
|
Inst.getOperand(0).getReg() != ARM::SP) {
|
|
int64_t Value =
|
|
(int64_t) (cast<MCConstantExpr>(SubExprVal))->getValue();
|
|
bool UseMov = true;
|
|
bool MovHasS = true;
|
|
if (Inst.getOpcode() == ARM::LDRConstPool) {
|
|
// ARM Constant
|
|
if (ARM_AM::getSOImmVal(Value) != -1) {
|
|
Value = ARM_AM::getSOImmVal(Value);
|
|
TmpInst.setOpcode(ARM::MOVi);
|
|
}
|
|
else if (ARM_AM::getSOImmVal(~Value) != -1) {
|
|
Value = ARM_AM::getSOImmVal(~Value);
|
|
TmpInst.setOpcode(ARM::MVNi);
|
|
}
|
|
else if (hasV6T2Ops() &&
|
|
Value >=0 && Value < 65536) {
|
|
TmpInst.setOpcode(ARM::MOVi16);
|
|
MovHasS = false;
|
|
}
|
|
else
|
|
UseMov = false;
|
|
}
|
|
else {
|
|
// Thumb/Thumb2 Constant
|
|
if (hasThumb2() &&
|
|
ARM_AM::getT2SOImmVal(Value) != -1)
|
|
TmpInst.setOpcode(ARM::t2MOVi);
|
|
else if (hasThumb2() &&
|
|
ARM_AM::getT2SOImmVal(~Value) != -1) {
|
|
TmpInst.setOpcode(ARM::t2MVNi);
|
|
Value = ~Value;
|
|
}
|
|
else if (hasV8MBaseline() &&
|
|
Value >=0 && Value < 65536) {
|
|
TmpInst.setOpcode(ARM::t2MOVi16);
|
|
MovHasS = false;
|
|
}
|
|
else
|
|
UseMov = false;
|
|
}
|
|
if (UseMov) {
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rt
|
|
TmpInst.addOperand(MCOperand::createImm(Value)); // Immediate
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
if (MovHasS)
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // S
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
}
|
|
// No opportunity to use MOV/MVN create constant pool
|
|
const MCExpr *CPLoc =
|
|
getTargetStreamer().addConstantPoolEntry(SubExprVal,
|
|
PoolOperand.getStartLoc());
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rt
|
|
TmpInst.addOperand(MCOperand::createExpr(CPLoc)); // offset to constpool
|
|
if (TmpInst.getOpcode() == ARM::LDRi12)
|
|
TmpInst.addOperand(MCOperand::createImm(0)); // unused offset
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
// Handle NEON VST complex aliases.
|
|
case ARM::VST1LNdWB_register_Asm_8:
|
|
case ARM::VST1LNdWB_register_Asm_16:
|
|
case ARM::VST1LNdWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST2LNdWB_register_Asm_8:
|
|
case ARM::VST2LNdWB_register_Asm_16:
|
|
case ARM::VST2LNdWB_register_Asm_32:
|
|
case ARM::VST2LNqWB_register_Asm_16:
|
|
case ARM::VST2LNqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST3LNdWB_register_Asm_8:
|
|
case ARM::VST3LNdWB_register_Asm_16:
|
|
case ARM::VST3LNdWB_register_Asm_32:
|
|
case ARM::VST3LNqWB_register_Asm_16:
|
|
case ARM::VST3LNqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST4LNdWB_register_Asm_8:
|
|
case ARM::VST4LNdWB_register_Asm_16:
|
|
case ARM::VST4LNdWB_register_Asm_32:
|
|
case ARM::VST4LNqWB_register_Asm_16:
|
|
case ARM::VST4LNqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST1LNdWB_fixed_Asm_8:
|
|
case ARM::VST1LNdWB_fixed_Asm_16:
|
|
case ARM::VST1LNdWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST2LNdWB_fixed_Asm_8:
|
|
case ARM::VST2LNdWB_fixed_Asm_16:
|
|
case ARM::VST2LNdWB_fixed_Asm_32:
|
|
case ARM::VST2LNqWB_fixed_Asm_16:
|
|
case ARM::VST2LNqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST3LNdWB_fixed_Asm_8:
|
|
case ARM::VST3LNdWB_fixed_Asm_16:
|
|
case ARM::VST3LNdWB_fixed_Asm_32:
|
|
case ARM::VST3LNqWB_fixed_Asm_16:
|
|
case ARM::VST3LNqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST4LNdWB_fixed_Asm_8:
|
|
case ARM::VST4LNdWB_fixed_Asm_16:
|
|
case ARM::VST4LNdWB_fixed_Asm_32:
|
|
case ARM::VST4LNqWB_fixed_Asm_16:
|
|
case ARM::VST4LNqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST1LNdAsm_8:
|
|
case ARM::VST1LNdAsm_16:
|
|
case ARM::VST1LNdAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST2LNdAsm_8:
|
|
case ARM::VST2LNdAsm_16:
|
|
case ARM::VST2LNdAsm_32:
|
|
case ARM::VST2LNqAsm_16:
|
|
case ARM::VST2LNqAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST3LNdAsm_8:
|
|
case ARM::VST3LNdAsm_16:
|
|
case ARM::VST3LNdAsm_32:
|
|
case ARM::VST3LNqAsm_16:
|
|
case ARM::VST3LNqAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST4LNdAsm_8:
|
|
case ARM::VST4LNdAsm_16:
|
|
case ARM::VST4LNdAsm_32:
|
|
case ARM::VST4LNqAsm_16:
|
|
case ARM::VST4LNqAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// Handle NEON VLD complex aliases.
|
|
case ARM::VLD1LNdWB_register_Asm_8:
|
|
case ARM::VLD1LNdWB_register_Asm_16:
|
|
case ARM::VLD1LNdWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD2LNdWB_register_Asm_8:
|
|
case ARM::VLD2LNdWB_register_Asm_16:
|
|
case ARM::VLD2LNdWB_register_Asm_32:
|
|
case ARM::VLD2LNqWB_register_Asm_16:
|
|
case ARM::VLD2LNqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3LNdWB_register_Asm_8:
|
|
case ARM::VLD3LNdWB_register_Asm_16:
|
|
case ARM::VLD3LNdWB_register_Asm_32:
|
|
case ARM::VLD3LNqWB_register_Asm_16:
|
|
case ARM::VLD3LNqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4LNdWB_register_Asm_8:
|
|
case ARM::VLD4LNdWB_register_Asm_16:
|
|
case ARM::VLD4LNdWB_register_Asm_32:
|
|
case ARM::VLD4LNqWB_register_Asm_16:
|
|
case ARM::VLD4LNqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(5)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD1LNdWB_fixed_Asm_8:
|
|
case ARM::VLD1LNdWB_fixed_Asm_16:
|
|
case ARM::VLD1LNdWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD2LNdWB_fixed_Asm_8:
|
|
case ARM::VLD2LNdWB_fixed_Asm_16:
|
|
case ARM::VLD2LNdWB_fixed_Asm_32:
|
|
case ARM::VLD2LNqWB_fixed_Asm_16:
|
|
case ARM::VLD2LNqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3LNdWB_fixed_Asm_8:
|
|
case ARM::VLD3LNdWB_fixed_Asm_16:
|
|
case ARM::VLD3LNdWB_fixed_Asm_32:
|
|
case ARM::VLD3LNqWB_fixed_Asm_16:
|
|
case ARM::VLD3LNqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4LNdWB_fixed_Asm_8:
|
|
case ARM::VLD4LNdWB_fixed_Asm_16:
|
|
case ARM::VLD4LNdWB_fixed_Asm_32:
|
|
case ARM::VLD4LNqWB_fixed_Asm_16:
|
|
case ARM::VLD4LNqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD1LNdAsm_8:
|
|
case ARM::VLD1LNdAsm_16:
|
|
case ARM::VLD1LNdAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD2LNdAsm_8:
|
|
case ARM::VLD2LNdAsm_16:
|
|
case ARM::VLD2LNdAsm_32:
|
|
case ARM::VLD2LNqAsm_16:
|
|
case ARM::VLD2LNqAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3LNdAsm_8:
|
|
case ARM::VLD3LNdAsm_16:
|
|
case ARM::VLD3LNdAsm_32:
|
|
case ARM::VLD3LNqAsm_16:
|
|
case ARM::VLD3LNqAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4LNdAsm_8:
|
|
case ARM::VLD4LNdAsm_16:
|
|
case ARM::VLD4LNdAsm_32:
|
|
case ARM::VLD4LNqAsm_16:
|
|
case ARM::VLD4LNqAsm_32: {
|
|
MCInst TmpInst;
|
|
// Shuffle the operands around so the lane index operand is in the
|
|
// right place.
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(3)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // lane
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// VLD3DUP single 3-element structure to all lanes instructions.
|
|
case ARM::VLD3DUPdAsm_8:
|
|
case ARM::VLD3DUPdAsm_16:
|
|
case ARM::VLD3DUPdAsm_32:
|
|
case ARM::VLD3DUPqAsm_8:
|
|
case ARM::VLD3DUPqAsm_16:
|
|
case ARM::VLD3DUPqAsm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3DUPdWB_fixed_Asm_8:
|
|
case ARM::VLD3DUPdWB_fixed_Asm_16:
|
|
case ARM::VLD3DUPdWB_fixed_Asm_32:
|
|
case ARM::VLD3DUPqWB_fixed_Asm_8:
|
|
case ARM::VLD3DUPqWB_fixed_Asm_16:
|
|
case ARM::VLD3DUPqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3DUPdWB_register_Asm_8:
|
|
case ARM::VLD3DUPdWB_register_Asm_16:
|
|
case ARM::VLD3DUPdWB_register_Asm_32:
|
|
case ARM::VLD3DUPqWB_register_Asm_8:
|
|
case ARM::VLD3DUPqWB_register_Asm_16:
|
|
case ARM::VLD3DUPqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// VLD3 multiple 3-element structure instructions.
|
|
case ARM::VLD3dAsm_8:
|
|
case ARM::VLD3dAsm_16:
|
|
case ARM::VLD3dAsm_32:
|
|
case ARM::VLD3qAsm_8:
|
|
case ARM::VLD3qAsm_16:
|
|
case ARM::VLD3qAsm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3dWB_fixed_Asm_8:
|
|
case ARM::VLD3dWB_fixed_Asm_16:
|
|
case ARM::VLD3dWB_fixed_Asm_32:
|
|
case ARM::VLD3qWB_fixed_Asm_8:
|
|
case ARM::VLD3qWB_fixed_Asm_16:
|
|
case ARM::VLD3qWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD3dWB_register_Asm_8:
|
|
case ARM::VLD3dWB_register_Asm_16:
|
|
case ARM::VLD3dWB_register_Asm_32:
|
|
case ARM::VLD3qWB_register_Asm_8:
|
|
case ARM::VLD3qWB_register_Asm_16:
|
|
case ARM::VLD3qWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// VLD4DUP single 3-element structure to all lanes instructions.
|
|
case ARM::VLD4DUPdAsm_8:
|
|
case ARM::VLD4DUPdAsm_16:
|
|
case ARM::VLD4DUPdAsm_32:
|
|
case ARM::VLD4DUPqAsm_8:
|
|
case ARM::VLD4DUPqAsm_16:
|
|
case ARM::VLD4DUPqAsm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4DUPdWB_fixed_Asm_8:
|
|
case ARM::VLD4DUPdWB_fixed_Asm_16:
|
|
case ARM::VLD4DUPdWB_fixed_Asm_32:
|
|
case ARM::VLD4DUPqWB_fixed_Asm_8:
|
|
case ARM::VLD4DUPqWB_fixed_Asm_16:
|
|
case ARM::VLD4DUPqWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4DUPdWB_register_Asm_8:
|
|
case ARM::VLD4DUPdWB_register_Asm_16:
|
|
case ARM::VLD4DUPdWB_register_Asm_32:
|
|
case ARM::VLD4DUPqWB_register_Asm_8:
|
|
case ARM::VLD4DUPqWB_register_Asm_16:
|
|
case ARM::VLD4DUPqWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// VLD4 multiple 4-element structure instructions.
|
|
case ARM::VLD4dAsm_8:
|
|
case ARM::VLD4dAsm_16:
|
|
case ARM::VLD4dAsm_32:
|
|
case ARM::VLD4qAsm_8:
|
|
case ARM::VLD4qAsm_16:
|
|
case ARM::VLD4qAsm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4dWB_fixed_Asm_8:
|
|
case ARM::VLD4dWB_fixed_Asm_16:
|
|
case ARM::VLD4dWB_fixed_Asm_32:
|
|
case ARM::VLD4qWB_fixed_Asm_8:
|
|
case ARM::VLD4qWB_fixed_Asm_16:
|
|
case ARM::VLD4qWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VLD4dWB_register_Asm_8:
|
|
case ARM::VLD4dWB_register_Asm_16:
|
|
case ARM::VLD4dWB_register_Asm_32:
|
|
case ARM::VLD4qWB_register_Asm_8:
|
|
case ARM::VLD4qWB_register_Asm_16:
|
|
case ARM::VLD4qWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// VST3 multiple 3-element structure instructions.
|
|
case ARM::VST3dAsm_8:
|
|
case ARM::VST3dAsm_16:
|
|
case ARM::VST3dAsm_32:
|
|
case ARM::VST3qAsm_8:
|
|
case ARM::VST3qAsm_16:
|
|
case ARM::VST3qAsm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST3dWB_fixed_Asm_8:
|
|
case ARM::VST3dWB_fixed_Asm_16:
|
|
case ARM::VST3dWB_fixed_Asm_32:
|
|
case ARM::VST3qWB_fixed_Asm_8:
|
|
case ARM::VST3qWB_fixed_Asm_16:
|
|
case ARM::VST3qWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST3dWB_register_Asm_8:
|
|
case ARM::VST3dWB_register_Asm_16:
|
|
case ARM::VST3dWB_register_Asm_32:
|
|
case ARM::VST3qWB_register_Asm_8:
|
|
case ARM::VST3qWB_register_Asm_16:
|
|
case ARM::VST3qWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// VST4 multiple 3-element structure instructions.
|
|
case ARM::VST4dAsm_8:
|
|
case ARM::VST4dAsm_16:
|
|
case ARM::VST4dAsm_32:
|
|
case ARM::VST4qAsm_8:
|
|
case ARM::VST4qAsm_16:
|
|
case ARM::VST4qAsm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST4dWB_fixed_Asm_8:
|
|
case ARM::VST4dWB_fixed_Asm_16:
|
|
case ARM::VST4dWB_fixed_Asm_32:
|
|
case ARM::VST4qWB_fixed_Asm_8:
|
|
case ARM::VST4qWB_fixed_Asm_16:
|
|
case ARM::VST4qWB_fixed_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
case ARM::VST4dWB_register_Asm_8:
|
|
case ARM::VST4dWB_register_Asm_16:
|
|
case ARM::VST4dWB_register_Asm_32:
|
|
case ARM::VST4qWB_register_Asm_8:
|
|
case ARM::VST4qWB_register_Asm_16:
|
|
case ARM::VST4qWB_register_Asm_32: {
|
|
MCInst TmpInst;
|
|
unsigned Spacing;
|
|
TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // alignment
|
|
TmpInst.addOperand(Inst.getOperand(3)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Vd
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 2));
|
|
TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
|
|
Spacing * 3));
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
|
|
// Handle encoding choice for the shift-immediate instructions.
|
|
case ARM::t2LSLri:
|
|
case ARM::t2LSRri:
|
|
case ARM::t2ASRri: {
|
|
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
|
|
Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) &&
|
|
!(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w")) {
|
|
unsigned NewOpc;
|
|
switch (Inst.getOpcode()) {
|
|
default: llvm_unreachable("unexpected opcode");
|
|
case ARM::t2LSLri: NewOpc = ARM::tLSLri; break;
|
|
case ARM::t2LSRri: NewOpc = ARM::tLSRri; break;
|
|
case ARM::t2ASRri: NewOpc = ARM::tASRri; break;
|
|
}
|
|
// The Thumb1 operands aren't in the same order. Awesome, eh?
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(NewOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Handle the Thumb2 mode MOV complex aliases.
|
|
case ARM::t2MOVsr:
|
|
case ARM::t2MOVSsr: {
|
|
// Which instruction to expand to depends on the CCOut operand and
|
|
// whether we're in an IT block if the register operands are low
|
|
// registers.
|
|
bool isNarrow = false;
|
|
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(2).getReg()) &&
|
|
Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
|
|
inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
|
|
isNarrow = true;
|
|
MCInst TmpInst;
|
|
unsigned newOpc;
|
|
switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
|
|
case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
|
|
case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
|
|
case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
|
|
}
|
|
TmpInst.setOpcode(newOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rd
|
|
if (isNarrow)
|
|
TmpInst.addOperand(MCOperand::createReg(
|
|
Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rm
|
|
TmpInst.addOperand(Inst.getOperand(4)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
if (!isNarrow)
|
|
TmpInst.addOperand(MCOperand::createReg(
|
|
Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::t2MOVsi:
|
|
case ARM::t2MOVSsi: {
|
|
// Which instruction to expand to depends on the CCOut operand and
|
|
// whether we're in an IT block if the register operands are low
|
|
// registers.
|
|
bool isNarrow = false;
|
|
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
|
|
isNarrow = true;
|
|
MCInst TmpInst;
|
|
unsigned newOpc;
|
|
switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
|
|
case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
|
|
case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
|
|
case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
|
|
case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
|
|
}
|
|
unsigned Amount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
|
|
if (Amount == 32) Amount = 0;
|
|
TmpInst.setOpcode(newOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rd
|
|
if (isNarrow)
|
|
TmpInst.addOperand(MCOperand::createReg(
|
|
Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
if (newOpc != ARM::t2RRX)
|
|
TmpInst.addOperand(MCOperand::createImm(Amount));
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
if (!isNarrow)
|
|
TmpInst.addOperand(MCOperand::createReg(
|
|
Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
// Handle the ARM mode MOV complex aliases.
|
|
case ARM::ASRr:
|
|
case ARM::LSRr:
|
|
case ARM::LSLr:
|
|
case ARM::RORr: {
|
|
ARM_AM::ShiftOpc ShiftTy;
|
|
switch(Inst.getOpcode()) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
|
|
case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
|
|
case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
|
|
case ARM::RORr: ShiftTy = ARM_AM::ror; break;
|
|
}
|
|
unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::MOVsr);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rd
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(Inst.getOperand(2)); // Rm
|
|
TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
TmpInst.addOperand(Inst.getOperand(5)); // cc_out
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::ASRi:
|
|
case ARM::LSRi:
|
|
case ARM::LSLi:
|
|
case ARM::RORi: {
|
|
ARM_AM::ShiftOpc ShiftTy;
|
|
switch(Inst.getOpcode()) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
|
|
case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
|
|
case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
|
|
case ARM::RORi: ShiftTy = ARM_AM::ror; break;
|
|
}
|
|
// A shift by zero is a plain MOVr, not a MOVsi.
|
|
unsigned Amt = Inst.getOperand(2).getImm();
|
|
unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
|
|
// A shift by 32 should be encoded as 0 when permitted
|
|
if (Amt == 32 && (ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr))
|
|
Amt = 0;
|
|
unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(Opc);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rd
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
if (Opc == ARM::MOVsi)
|
|
TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty
|
|
TmpInst.addOperand(Inst.getOperand(3)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
TmpInst.addOperand(Inst.getOperand(5)); // cc_out
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::RRXi: {
|
|
unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::MOVsi);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rd
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4)); // cc_out
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::t2LDMIA_UPD: {
|
|
// If this is a load of a single register, then we should use
|
|
// a post-indexed LDR instruction instead, per the ARM ARM.
|
|
if (Inst.getNumOperands() != 5)
|
|
return false;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::t2LDR_POST);
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rt
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(MCOperand::createImm(4));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::t2STMDB_UPD: {
|
|
// If this is a store of a single register, then we should use
|
|
// a pre-indexed STR instruction instead, per the ARM ARM.
|
|
if (Inst.getNumOperands() != 5)
|
|
return false;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::t2STR_PRE);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rt
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(MCOperand::createImm(-4));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::LDMIA_UPD:
|
|
// If this is a load of a single register via a 'pop', then we should use
|
|
// a post-indexed LDR instruction instead, per the ARM ARM.
|
|
if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "pop" &&
|
|
Inst.getNumOperands() == 5) {
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::LDR_POST_IMM);
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rt
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(1)); // Rn
|
|
TmpInst.addOperand(MCOperand::createReg(0)); // am2offset
|
|
TmpInst.addOperand(MCOperand::createImm(4));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::STMDB_UPD:
|
|
// If this is a store of a single register via a 'push', then we should use
|
|
// a pre-indexed STR instruction instead, per the ARM ARM.
|
|
if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "push" &&
|
|
Inst.getNumOperands() == 5) {
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::STR_PRE_IMM);
|
|
TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
|
|
TmpInst.addOperand(Inst.getOperand(4)); // Rt
|
|
TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
|
|
TmpInst.addOperand(MCOperand::createImm(-4));
|
|
TmpInst.addOperand(Inst.getOperand(2)); // CondCode
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
}
|
|
break;
|
|
case ARM::t2ADDri12:
|
|
// If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
|
|
// mnemonic was used (not "addw"), encoding T3 is preferred.
|
|
if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "add" ||
|
|
ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
|
|
break;
|
|
Inst.setOpcode(ARM::t2ADDri);
|
|
Inst.addOperand(MCOperand::createReg(0)); // cc_out
|
|
break;
|
|
case ARM::t2SUBri12:
|
|
// If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
|
|
// mnemonic was used (not "subw"), encoding T3 is preferred.
|
|
if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "sub" ||
|
|
ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
|
|
break;
|
|
Inst.setOpcode(ARM::t2SUBri);
|
|
Inst.addOperand(MCOperand::createReg(0)); // cc_out
|
|
break;
|
|
case ARM::tADDi8:
|
|
// If the immediate is in the range 0-7, we want tADDi3 iff Rd was
|
|
// explicitly specified. From the ARM ARM: "Encoding T1 is preferred
|
|
// to encoding T2 if <Rd> is specified and encoding T2 is preferred
|
|
// to encoding T1 if <Rd> is omitted."
|
|
if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
|
|
Inst.setOpcode(ARM::tADDi3);
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::tSUBi8:
|
|
// If the immediate is in the range 0-7, we want tADDi3 iff Rd was
|
|
// explicitly specified. From the ARM ARM: "Encoding T1 is preferred
|
|
// to encoding T2 if <Rd> is specified and encoding T2 is preferred
|
|
// to encoding T1 if <Rd> is omitted."
|
|
if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
|
|
Inst.setOpcode(ARM::tSUBi3);
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::t2ADDri:
|
|
case ARM::t2SUBri: {
|
|
// If the destination and first source operand are the same, and
|
|
// the flags are compatible with the current IT status, use encoding T2
|
|
// instead of T3. For compatibility with the system 'as'. Make sure the
|
|
// wide encoding wasn't explicit.
|
|
if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
|
|
!isARMLowRegister(Inst.getOperand(0).getReg()) ||
|
|
(unsigned)Inst.getOperand(2).getImm() > 255 ||
|
|
((!inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR) ||
|
|
(inITBlock() && Inst.getOperand(5).getReg() != 0)) ||
|
|
(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w"))
|
|
break;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(Inst.getOpcode() == ARM::t2ADDri ?
|
|
ARM::tADDi8 : ARM::tSUBi8);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::t2ADDrr: {
|
|
// If the destination and first source operand are the same, and
|
|
// there's no setting of the flags, use encoding T2 instead of T3.
|
|
// Note that this is only for ADD, not SUB. This mirrors the system
|
|
// 'as' behaviour. Also take advantage of ADD being commutative.
|
|
// Make sure the wide encoding wasn't explicit.
|
|
bool Swap = false;
|
|
auto DestReg = Inst.getOperand(0).getReg();
|
|
bool Transform = DestReg == Inst.getOperand(1).getReg();
|
|
if (!Transform && DestReg == Inst.getOperand(2).getReg()) {
|
|
Transform = true;
|
|
Swap = true;
|
|
}
|
|
if (!Transform ||
|
|
Inst.getOperand(5).getReg() != 0 ||
|
|
(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w"))
|
|
break;
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::tADDhirr);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(Swap ? 1 : 2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
case ARM::tADDrSP: {
|
|
// If the non-SP source operand and the destination operand are not the
|
|
// same, we need to use the 32-bit encoding if it's available.
|
|
if (Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
|
|
Inst.setOpcode(ARM::t2ADDrr);
|
|
Inst.addOperand(MCOperand::createReg(0)); // cc_out
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::tB:
|
|
// A Thumb conditional branch outside of an IT block is a tBcc.
|
|
if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
|
|
Inst.setOpcode(ARM::tBcc);
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::t2B:
|
|
// A Thumb2 conditional branch outside of an IT block is a t2Bcc.
|
|
if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
|
|
Inst.setOpcode(ARM::t2Bcc);
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::t2Bcc:
|
|
// If the conditional is AL or we're in an IT block, we really want t2B.
|
|
if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
|
|
Inst.setOpcode(ARM::t2B);
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::tBcc:
|
|
// If the conditional is AL, we really want tB.
|
|
if (Inst.getOperand(1).getImm() == ARMCC::AL) {
|
|
Inst.setOpcode(ARM::tB);
|
|
return true;
|
|
}
|
|
break;
|
|
case ARM::tLDMIA: {
|
|
// If the register list contains any high registers, or if the writeback
|
|
// doesn't match what tLDMIA can do, we need to use the 32-bit encoding
|
|
// instead if we're in Thumb2. Otherwise, this should have generated
|
|
// an error in validateInstruction().
|
|
unsigned Rn = Inst.getOperand(0).getReg();
|
|
bool hasWritebackToken =
|
|
(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
|
|
static_cast<ARMOperand &>(*Operands[3]).getToken() == "!");
|
|
bool listContainsBase;
|
|
if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
|
|
(!listContainsBase && !hasWritebackToken) ||
|
|
(listContainsBase && hasWritebackToken)) {
|
|
// 16-bit encoding isn't sufficient. Switch to the 32-bit version.
|
|
assert (isThumbTwo());
|
|
Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
|
|
// If we're switching to the updating version, we need to insert
|
|
// the writeback tied operand.
|
|
if (hasWritebackToken)
|
|
Inst.insert(Inst.begin(),
|
|
MCOperand::createReg(Inst.getOperand(0).getReg()));
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::tSTMIA_UPD: {
|
|
// If the register list contains any high registers, we need to use
|
|
// the 32-bit encoding instead if we're in Thumb2. Otherwise, this
|
|
// should have generated an error in validateInstruction().
|
|
unsigned Rn = Inst.getOperand(0).getReg();
|
|
bool listContainsBase;
|
|
if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
|
|
// 16-bit encoding isn't sufficient. Switch to the 32-bit version.
|
|
assert (isThumbTwo());
|
|
Inst.setOpcode(ARM::t2STMIA_UPD);
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::tPOP: {
|
|
bool listContainsBase;
|
|
// If the register list contains any high registers, we need to use
|
|
// the 32-bit encoding instead if we're in Thumb2. Otherwise, this
|
|
// should have generated an error in validateInstruction().
|
|
if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
|
|
return false;
|
|
assert (isThumbTwo());
|
|
Inst.setOpcode(ARM::t2LDMIA_UPD);
|
|
// Add the base register and writeback operands.
|
|
Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
|
|
Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
|
|
return true;
|
|
}
|
|
case ARM::tPUSH: {
|
|
bool listContainsBase;
|
|
if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
|
|
return false;
|
|
assert (isThumbTwo());
|
|
Inst.setOpcode(ARM::t2STMDB_UPD);
|
|
// Add the base register and writeback operands.
|
|
Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
|
|
Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
|
|
return true;
|
|
}
|
|
case ARM::t2MOVi: {
|
|
// If we can use the 16-bit encoding and the user didn't explicitly
|
|
// request the 32-bit variant, transform it here.
|
|
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
(unsigned)Inst.getOperand(1).getImm() <= 255 &&
|
|
((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
|
|
Inst.getOperand(4).getReg() == ARM::CPSR) ||
|
|
(inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
|
|
(!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
|
|
static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
|
|
// The operands aren't in the same order for tMOVi8...
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::tMOVi8);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::t2MOVr: {
|
|
// If we can use the 16-bit encoding and the user didn't explicitly
|
|
// request the 32-bit variant, transform it here.
|
|
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
Inst.getOperand(2).getImm() == ARMCC::AL &&
|
|
Inst.getOperand(4).getReg() == ARM::CPSR &&
|
|
(!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
|
|
static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
|
|
// The operands aren't the same for tMOV[S]r... (no cc_out)
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::t2SXTH:
|
|
case ARM::t2SXTB:
|
|
case ARM::t2UXTH:
|
|
case ARM::t2UXTB: {
|
|
// If we can use the 16-bit encoding and the user didn't explicitly
|
|
// request the 32-bit variant, transform it here.
|
|
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
Inst.getOperand(2).getImm() == 0 &&
|
|
(!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
|
|
static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
|
|
unsigned NewOpc;
|
|
switch (Inst.getOpcode()) {
|
|
default: llvm_unreachable("Illegal opcode!");
|
|
case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
|
|
case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
|
|
case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
|
|
case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
|
|
}
|
|
// The operands aren't the same for thumb1 (no rotate operand).
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(NewOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case ARM::MOVsi: {
|
|
ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
|
|
// rrx shifts and asr/lsr of #32 is encoded as 0
|
|
if (SOpc == ARM_AM::rrx || SOpc == ARM_AM::asr || SOpc == ARM_AM::lsr)
|
|
return false;
|
|
if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
|
|
// Shifting by zero is accepted as a vanilla 'MOVr'
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::MOVr);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
case ARM::ANDrsi:
|
|
case ARM::ORRrsi:
|
|
case ARM::EORrsi:
|
|
case ARM::BICrsi:
|
|
case ARM::SUBrsi:
|
|
case ARM::ADDrsi: {
|
|
unsigned newOpc;
|
|
ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
|
|
if (SOpc == ARM_AM::rrx) return false;
|
|
switch (Inst.getOpcode()) {
|
|
default: llvm_unreachable("unexpected opcode!");
|
|
case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
|
|
case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
|
|
case ARM::EORrsi: newOpc = ARM::EORrr; break;
|
|
case ARM::BICrsi: newOpc = ARM::BICrr; break;
|
|
case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
|
|
case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
|
|
}
|
|
// If the shift is by zero, use the non-shifted instruction definition.
|
|
// The exception is for right shifts, where 0 == 32
|
|
if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0 &&
|
|
!(SOpc == ARM_AM::lsr || SOpc == ARM_AM::asr)) {
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(newOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
TmpInst.addOperand(Inst.getOperand(6));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
case ARM::ITasm:
|
|
case ARM::t2IT: {
|
|
// The mask bits for all but the first condition are represented as
|
|
// the low bit of the condition code value implies 't'. We currently
|
|
// always have 1 implies 't', so XOR toggle the bits if the low bit
|
|
// of the condition code is zero.
|
|
MCOperand &MO = Inst.getOperand(1);
|
|
unsigned Mask = MO.getImm();
|
|
unsigned OrigMask = Mask;
|
|
unsigned TZ = countTrailingZeros(Mask);
|
|
if ((Inst.getOperand(0).getImm() & 1) == 0) {
|
|
assert(Mask && TZ <= 3 && "illegal IT mask value!");
|
|
Mask ^= (0xE << TZ) & 0xF;
|
|
}
|
|
MO.setImm(Mask);
|
|
|
|
// Set up the IT block state according to the IT instruction we just
|
|
// matched.
|
|
assert(!inITBlock() && "nested IT blocks?!");
|
|
ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
|
|
ITState.Mask = OrigMask; // Use the original mask, not the updated one.
|
|
ITState.CurPosition = 0;
|
|
ITState.FirstCond = true;
|
|
break;
|
|
}
|
|
case ARM::t2LSLrr:
|
|
case ARM::t2LSRrr:
|
|
case ARM::t2ASRrr:
|
|
case ARM::t2SBCrr:
|
|
case ARM::t2RORrr:
|
|
case ARM::t2BICrr:
|
|
{
|
|
// Assemblers should use the narrow encodings of these instructions when permissible.
|
|
if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(2).getReg())) &&
|
|
Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
|
|
((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
|
|
(inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
|
|
(!static_cast<ARMOperand &>(*Operands[3]).isToken() ||
|
|
!static_cast<ARMOperand &>(*Operands[3]).getToken().equals_lower(
|
|
".w"))) {
|
|
unsigned NewOpc;
|
|
switch (Inst.getOpcode()) {
|
|
default: llvm_unreachable("unexpected opcode");
|
|
case ARM::t2LSLrr: NewOpc = ARM::tLSLrr; break;
|
|
case ARM::t2LSRrr: NewOpc = ARM::tLSRrr; break;
|
|
case ARM::t2ASRrr: NewOpc = ARM::tASRrr; break;
|
|
case ARM::t2SBCrr: NewOpc = ARM::tSBC; break;
|
|
case ARM::t2RORrr: NewOpc = ARM::tROR; break;
|
|
case ARM::t2BICrr: NewOpc = ARM::tBIC; break;
|
|
}
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(NewOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
case ARM::t2ANDrr:
|
|
case ARM::t2EORrr:
|
|
case ARM::t2ADCrr:
|
|
case ARM::t2ORRrr:
|
|
{
|
|
// Assemblers should use the narrow encodings of these instructions when permissible.
|
|
// These instructions are special in that they are commutable, so shorter encodings
|
|
// are available more often.
|
|
if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(2).getReg())) &&
|
|
(Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() ||
|
|
Inst.getOperand(0).getReg() == Inst.getOperand(2).getReg()) &&
|
|
((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
|
|
(inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
|
|
(!static_cast<ARMOperand &>(*Operands[3]).isToken() ||
|
|
!static_cast<ARMOperand &>(*Operands[3]).getToken().equals_lower(
|
|
".w"))) {
|
|
unsigned NewOpc;
|
|
switch (Inst.getOpcode()) {
|
|
default: llvm_unreachable("unexpected opcode");
|
|
case ARM::t2ADCrr: NewOpc = ARM::tADC; break;
|
|
case ARM::t2ANDrr: NewOpc = ARM::tAND; break;
|
|
case ARM::t2EORrr: NewOpc = ARM::tEOR; break;
|
|
case ARM::t2ORRrr: NewOpc = ARM::tORR; break;
|
|
}
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(NewOpc);
|
|
TmpInst.addOperand(Inst.getOperand(0));
|
|
TmpInst.addOperand(Inst.getOperand(5));
|
|
if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) {
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
} else {
|
|
TmpInst.addOperand(Inst.getOperand(2));
|
|
TmpInst.addOperand(Inst.getOperand(1));
|
|
}
|
|
TmpInst.addOperand(Inst.getOperand(3));
|
|
TmpInst.addOperand(Inst.getOperand(4));
|
|
Inst = TmpInst;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
|
|
// 16-bit thumb arithmetic instructions either require or preclude the 'S'
|
|
// suffix depending on whether they're in an IT block or not.
|
|
unsigned Opc = Inst.getOpcode();
|
|
const MCInstrDesc &MCID = MII.get(Opc);
|
|
if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
|
|
assert(MCID.hasOptionalDef() &&
|
|
"optionally flag setting instruction missing optional def operand");
|
|
assert(MCID.NumOperands == Inst.getNumOperands() &&
|
|
"operand count mismatch!");
|
|
// Find the optional-def operand (cc_out).
|
|
unsigned OpNo;
|
|
for (OpNo = 0;
|
|
!MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
|
|
++OpNo)
|
|
;
|
|
// If we're parsing Thumb1, reject it completely.
|
|
if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
|
|
return Match_MnemonicFail;
|
|
// If we're parsing Thumb2, which form is legal depends on whether we're
|
|
// in an IT block.
|
|
if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
|
|
!inITBlock())
|
|
return Match_RequiresITBlock;
|
|
if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
|
|
inITBlock())
|
|
return Match_RequiresNotITBlock;
|
|
} else if (isThumbOne()) {
|
|
// Some high-register supporting Thumb1 encodings only allow both registers
|
|
// to be from r0-r7 when in Thumb2.
|
|
if (Opc == ARM::tADDhirr && !hasV6MOps() &&
|
|
isARMLowRegister(Inst.getOperand(1).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(2).getReg()))
|
|
return Match_RequiresThumb2;
|
|
// Others only require ARMv6 or later.
|
|
else if (Opc == ARM::tMOVr && !hasV6Ops() &&
|
|
isARMLowRegister(Inst.getOperand(0).getReg()) &&
|
|
isARMLowRegister(Inst.getOperand(1).getReg()))
|
|
return Match_RequiresV6;
|
|
}
|
|
|
|
for (unsigned I = 0; I < MCID.NumOperands; ++I)
|
|
if (MCID.OpInfo[I].RegClass == ARM::rGPRRegClassID) {
|
|
// rGPRRegClass excludes PC, and also excluded SP before ARMv8
|
|
if ((Inst.getOperand(I).getReg() == ARM::SP) && !hasV8Ops())
|
|
return Match_RequiresV8;
|
|
else if (Inst.getOperand(I).getReg() == ARM::PC)
|
|
return Match_InvalidOperand;
|
|
}
|
|
|
|
return Match_Success;
|
|
}
|
|
|
|
namespace llvm {
|
|
template <> inline bool IsCPSRDead<MCInst>(MCInst *Instr) {
|
|
return true; // In an assembly source, no need to second-guess
|
|
}
|
|
}
|
|
|
|
static const char *getSubtargetFeatureName(uint64_t Val);
|
|
bool ARMAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
|
|
OperandVector &Operands,
|
|
MCStreamer &Out, uint64_t &ErrorInfo,
|
|
bool MatchingInlineAsm) {
|
|
MCInst Inst;
|
|
unsigned MatchResult;
|
|
|
|
MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo,
|
|
MatchingInlineAsm);
|
|
switch (MatchResult) {
|
|
case Match_Success:
|
|
// Context sensitive operand constraints aren't handled by the matcher,
|
|
// so check them here.
|
|
if (validateInstruction(Inst, Operands)) {
|
|
// Still progress the IT block, otherwise one wrong condition causes
|
|
// nasty cascading errors.
|
|
forwardITPosition();
|
|
return true;
|
|
}
|
|
|
|
{ // processInstruction() updates inITBlock state, we need to save it away
|
|
bool wasInITBlock = inITBlock();
|
|
|
|
// Some instructions need post-processing to, for example, tweak which
|
|
// encoding is selected. Loop on it while changes happen so the
|
|
// individual transformations can chain off each other. E.g.,
|
|
// tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
|
|
while (processInstruction(Inst, Operands, Out))
|
|
;
|
|
|
|
// Only after the instruction is fully processed, we can validate it
|
|
if (wasInITBlock && hasV8Ops() && isThumb() &&
|
|
!isV8EligibleForIT(&Inst)) {
|
|
Warning(IDLoc, "deprecated instruction in IT block");
|
|
}
|
|
}
|
|
|
|
// Only move forward at the very end so that everything in validate
|
|
// and process gets a consistent answer about whether we're in an IT
|
|
// block.
|
|
forwardITPosition();
|
|
|
|
// ITasm is an ARM mode pseudo-instruction that just sets the ITblock and
|
|
// doesn't actually encode.
|
|
if (Inst.getOpcode() == ARM::ITasm)
|
|
return false;
|
|
|
|
Inst.setLoc(IDLoc);
|
|
Out.EmitInstruction(Inst, getSTI());
|
|
return false;
|
|
case Match_MissingFeature: {
|
|
assert(ErrorInfo && "Unknown missing feature!");
|
|
// Special case the error message for the very common case where only
|
|
// a single subtarget feature is missing (Thumb vs. ARM, e.g.).
|
|
std::string Msg = "instruction requires:";
|
|
uint64_t Mask = 1;
|
|
for (unsigned i = 0; i < (sizeof(ErrorInfo)*8-1); ++i) {
|
|
if (ErrorInfo & Mask) {
|
|
Msg += " ";
|
|
Msg += getSubtargetFeatureName(ErrorInfo & Mask);
|
|
}
|
|
Mask <<= 1;
|
|
}
|
|
return Error(IDLoc, Msg);
|
|
}
|
|
case Match_InvalidOperand: {
|
|
SMLoc ErrorLoc = IDLoc;
|
|
if (ErrorInfo != ~0ULL) {
|
|
if (ErrorInfo >= Operands.size())
|
|
return Error(IDLoc, "too few operands for instruction");
|
|
|
|
ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
|
|
if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
|
|
}
|
|
|
|
return Error(ErrorLoc, "invalid operand for instruction");
|
|
}
|
|
case Match_MnemonicFail:
|
|
return Error(IDLoc, "invalid instruction",
|
|
((ARMOperand &)*Operands[0]).getLocRange());
|
|
case Match_RequiresNotITBlock:
|
|
return Error(IDLoc, "flag setting instruction only valid outside IT block");
|
|
case Match_RequiresITBlock:
|
|
return Error(IDLoc, "instruction only valid inside IT block");
|
|
case Match_RequiresV6:
|
|
return Error(IDLoc, "instruction variant requires ARMv6 or later");
|
|
case Match_RequiresThumb2:
|
|
return Error(IDLoc, "instruction variant requires Thumb2");
|
|
case Match_RequiresV8:
|
|
return Error(IDLoc, "instruction variant requires ARMv8 or later");
|
|
case Match_ImmRange0_15: {
|
|
SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
|
|
if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
|
|
return Error(ErrorLoc, "immediate operand must be in the range [0,15]");
|
|
}
|
|
case Match_ImmRange0_239: {
|
|
SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
|
|
if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
|
|
return Error(ErrorLoc, "immediate operand must be in the range [0,239]");
|
|
}
|
|
case Match_AlignedMemoryRequiresNone:
|
|
case Match_DupAlignedMemoryRequiresNone:
|
|
case Match_AlignedMemoryRequires16:
|
|
case Match_DupAlignedMemoryRequires16:
|
|
case Match_AlignedMemoryRequires32:
|
|
case Match_DupAlignedMemoryRequires32:
|
|
case Match_AlignedMemoryRequires64:
|
|
case Match_DupAlignedMemoryRequires64:
|
|
case Match_AlignedMemoryRequires64or128:
|
|
case Match_DupAlignedMemoryRequires64or128:
|
|
case Match_AlignedMemoryRequires64or128or256:
|
|
{
|
|
SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getAlignmentLoc();
|
|
if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
|
|
switch (MatchResult) {
|
|
default:
|
|
llvm_unreachable("Missing Match_Aligned type");
|
|
case Match_AlignedMemoryRequiresNone:
|
|
case Match_DupAlignedMemoryRequiresNone:
|
|
return Error(ErrorLoc, "alignment must be omitted");
|
|
case Match_AlignedMemoryRequires16:
|
|
case Match_DupAlignedMemoryRequires16:
|
|
return Error(ErrorLoc, "alignment must be 16 or omitted");
|
|
case Match_AlignedMemoryRequires32:
|
|
case Match_DupAlignedMemoryRequires32:
|
|
return Error(ErrorLoc, "alignment must be 32 or omitted");
|
|
case Match_AlignedMemoryRequires64:
|
|
case Match_DupAlignedMemoryRequires64:
|
|
return Error(ErrorLoc, "alignment must be 64 or omitted");
|
|
case Match_AlignedMemoryRequires64or128:
|
|
case Match_DupAlignedMemoryRequires64or128:
|
|
return Error(ErrorLoc, "alignment must be 64, 128 or omitted");
|
|
case Match_AlignedMemoryRequires64or128or256:
|
|
return Error(ErrorLoc, "alignment must be 64, 128, 256 or omitted");
|
|
}
|
|
}
|
|
}
|
|
|
|
llvm_unreachable("Implement any new match types added!");
|
|
}
|
|
|
|
/// parseDirective parses the arm specific directives
|
|
bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
|
|
const MCObjectFileInfo::Environment Format =
|
|
getContext().getObjectFileInfo()->getObjectFileType();
|
|
bool IsMachO = Format == MCObjectFileInfo::IsMachO;
|
|
bool IsCOFF = Format == MCObjectFileInfo::IsCOFF;
|
|
|
|
StringRef IDVal = DirectiveID.getIdentifier();
|
|
if (IDVal == ".word")
|
|
return parseLiteralValues(4, DirectiveID.getLoc());
|
|
else if (IDVal == ".short" || IDVal == ".hword")
|
|
return parseLiteralValues(2, DirectiveID.getLoc());
|
|
else if (IDVal == ".thumb")
|
|
return parseDirectiveThumb(DirectiveID.getLoc());
|
|
else if (IDVal == ".arm")
|
|
return parseDirectiveARM(DirectiveID.getLoc());
|
|
else if (IDVal == ".thumb_func")
|
|
return parseDirectiveThumbFunc(DirectiveID.getLoc());
|
|
else if (IDVal == ".code")
|
|
return parseDirectiveCode(DirectiveID.getLoc());
|
|
else if (IDVal == ".syntax")
|
|
return parseDirectiveSyntax(DirectiveID.getLoc());
|
|
else if (IDVal == ".unreq")
|
|
return parseDirectiveUnreq(DirectiveID.getLoc());
|
|
else if (IDVal == ".fnend")
|
|
return parseDirectiveFnEnd(DirectiveID.getLoc());
|
|
else if (IDVal == ".cantunwind")
|
|
return parseDirectiveCantUnwind(DirectiveID.getLoc());
|
|
else if (IDVal == ".personality")
|
|
return parseDirectivePersonality(DirectiveID.getLoc());
|
|
else if (IDVal == ".handlerdata")
|
|
return parseDirectiveHandlerData(DirectiveID.getLoc());
|
|
else if (IDVal == ".setfp")
|
|
return parseDirectiveSetFP(DirectiveID.getLoc());
|
|
else if (IDVal == ".pad")
|
|
return parseDirectivePad(DirectiveID.getLoc());
|
|
else if (IDVal == ".save")
|
|
return parseDirectiveRegSave(DirectiveID.getLoc(), false);
|
|
else if (IDVal == ".vsave")
|
|
return parseDirectiveRegSave(DirectiveID.getLoc(), true);
|
|
else if (IDVal == ".ltorg" || IDVal == ".pool")
|
|
return parseDirectiveLtorg(DirectiveID.getLoc());
|
|
else if (IDVal == ".even")
|
|
return parseDirectiveEven(DirectiveID.getLoc());
|
|
else if (IDVal == ".personalityindex")
|
|
return parseDirectivePersonalityIndex(DirectiveID.getLoc());
|
|
else if (IDVal == ".unwind_raw")
|
|
return parseDirectiveUnwindRaw(DirectiveID.getLoc());
|
|
else if (IDVal == ".movsp")
|
|
return parseDirectiveMovSP(DirectiveID.getLoc());
|
|
else if (IDVal == ".arch_extension")
|
|
return parseDirectiveArchExtension(DirectiveID.getLoc());
|
|
else if (IDVal == ".align")
|
|
return parseDirectiveAlign(DirectiveID.getLoc());
|
|
else if (IDVal == ".thumb_set")
|
|
return parseDirectiveThumbSet(DirectiveID.getLoc());
|
|
|
|
if (!IsMachO && !IsCOFF) {
|
|
if (IDVal == ".arch")
|
|
return parseDirectiveArch(DirectiveID.getLoc());
|
|
else if (IDVal == ".cpu")
|
|
return parseDirectiveCPU(DirectiveID.getLoc());
|
|
else if (IDVal == ".eabi_attribute")
|
|
return parseDirectiveEabiAttr(DirectiveID.getLoc());
|
|
else if (IDVal == ".fpu")
|
|
return parseDirectiveFPU(DirectiveID.getLoc());
|
|
else if (IDVal == ".fnstart")
|
|
return parseDirectiveFnStart(DirectiveID.getLoc());
|
|
else if (IDVal == ".inst")
|
|
return parseDirectiveInst(DirectiveID.getLoc());
|
|
else if (IDVal == ".inst.n")
|
|
return parseDirectiveInst(DirectiveID.getLoc(), 'n');
|
|
else if (IDVal == ".inst.w")
|
|
return parseDirectiveInst(DirectiveID.getLoc(), 'w');
|
|
else if (IDVal == ".object_arch")
|
|
return parseDirectiveObjectArch(DirectiveID.getLoc());
|
|
else if (IDVal == ".tlsdescseq")
|
|
return parseDirectiveTLSDescSeq(DirectiveID.getLoc());
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/// parseLiteralValues
|
|
/// ::= .hword expression [, expression]*
|
|
/// ::= .short expression [, expression]*
|
|
/// ::= .word expression [, expression]*
|
|
bool ARMAsmParser::parseLiteralValues(unsigned Size, SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
for (;;) {
|
|
const MCExpr *Value;
|
|
if (getParser().parseExpression(Value)) {
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
getParser().getStreamer().EmitValue(Value, Size, L);
|
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
|
break;
|
|
|
|
// FIXME: Improve diagnostic.
|
|
if (getLexer().isNot(AsmToken::Comma)) {
|
|
Error(L, "unexpected token in directive");
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
}
|
|
}
|
|
|
|
Parser.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveThumb
|
|
/// ::= .thumb
|
|
bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(L, "unexpected token in directive");
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
if (!hasThumb()) {
|
|
Error(L, "target does not support Thumb mode");
|
|
return false;
|
|
}
|
|
|
|
if (!isThumb())
|
|
SwitchMode();
|
|
|
|
getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveARM
|
|
/// ::= .arm
|
|
bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(L, "unexpected token in directive");
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
if (!hasARM()) {
|
|
Error(L, "target does not support ARM mode");
|
|
return false;
|
|
}
|
|
|
|
if (isThumb())
|
|
SwitchMode();
|
|
|
|
getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
|
|
return false;
|
|
}
|
|
|
|
void ARMAsmParser::onLabelParsed(MCSymbol *Symbol) {
|
|
if (NextSymbolIsThumb) {
|
|
getParser().getStreamer().EmitThumbFunc(Symbol);
|
|
NextSymbolIsThumb = false;
|
|
}
|
|
}
|
|
|
|
/// parseDirectiveThumbFunc
|
|
/// ::= .thumbfunc symbol_name
|
|
bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
const auto Format = getContext().getObjectFileInfo()->getObjectFileType();
|
|
bool IsMachO = Format == MCObjectFileInfo::IsMachO;
|
|
|
|
// Darwin asm has (optionally) function name after .thumb_func direction
|
|
// ELF doesn't
|
|
if (IsMachO) {
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::EndOfStatement)) {
|
|
if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String)) {
|
|
Error(L, "unexpected token in .thumb_func directive");
|
|
return false;
|
|
}
|
|
|
|
MCSymbol *Func =
|
|
getParser().getContext().getOrCreateSymbol(Tok.getIdentifier());
|
|
getParser().getStreamer().EmitThumbFunc(Func);
|
|
Parser.Lex(); // Consume the identifier token.
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(Parser.getTok().getLoc(), "unexpected token in directive");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
NextSymbolIsThumb = true;
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveSyntax
|
|
/// ::= .syntax unified | divided
|
|
bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Identifier)) {
|
|
Error(L, "unexpected token in .syntax directive");
|
|
return false;
|
|
}
|
|
|
|
StringRef Mode = Tok.getString();
|
|
if (Mode == "unified" || Mode == "UNIFIED") {
|
|
Parser.Lex();
|
|
} else if (Mode == "divided" || Mode == "DIVIDED") {
|
|
Error(L, "'.syntax divided' arm asssembly not supported");
|
|
return false;
|
|
} else {
|
|
Error(L, "unrecognized syntax mode in .syntax directive");
|
|
return false;
|
|
}
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(Parser.getTok().getLoc(), "unexpected token in directive");
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
// TODO tell the MC streamer the mode
|
|
// getParser().getStreamer().Emit???();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveCode
|
|
/// ::= .code 16 | 32
|
|
bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
const AsmToken &Tok = Parser.getTok();
|
|
if (Tok.isNot(AsmToken::Integer)) {
|
|
Error(L, "unexpected token in .code directive");
|
|
return false;
|
|
}
|
|
int64_t Val = Parser.getTok().getIntVal();
|
|
if (Val != 16 && Val != 32) {
|
|
Error(L, "invalid operand to .code directive");
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(Parser.getTok().getLoc(), "unexpected token in directive");
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
if (Val == 16) {
|
|
if (!hasThumb()) {
|
|
Error(L, "target does not support Thumb mode");
|
|
return false;
|
|
}
|
|
|
|
if (!isThumb())
|
|
SwitchMode();
|
|
getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
|
|
} else {
|
|
if (!hasARM()) {
|
|
Error(L, "target does not support ARM mode");
|
|
return false;
|
|
}
|
|
|
|
if (isThumb())
|
|
SwitchMode();
|
|
getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveReq
|
|
/// ::= name .req registername
|
|
bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
Parser.Lex(); // Eat the '.req' token.
|
|
unsigned Reg;
|
|
SMLoc SRegLoc, ERegLoc;
|
|
if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(SRegLoc, "register name expected");
|
|
return false;
|
|
}
|
|
|
|
// Shouldn't be anything else.
|
|
if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(Parser.getTok().getLoc(), "unexpected input in .req directive.");
|
|
return false;
|
|
}
|
|
|
|
Parser.Lex(); // Consume the EndOfStatement
|
|
|
|
if (RegisterReqs.insert(std::make_pair(Name, Reg)).first->second != Reg) {
|
|
Error(SRegLoc, "redefinition of '" + Name + "' does not match original.");
|
|
return false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveUneq
|
|
/// ::= .unreq registername
|
|
bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (Parser.getTok().isNot(AsmToken::Identifier)) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, "unexpected input in .unreq directive.");
|
|
return false;
|
|
}
|
|
RegisterReqs.erase(Parser.getTok().getIdentifier().lower());
|
|
Parser.Lex(); // Eat the identifier.
|
|
return false;
|
|
}
|
|
|
|
// After changing arch/CPU, try to put the ARM/Thumb mode back to what it was
|
|
// before, if supported by the new target, or emit mapping symbols for the mode
|
|
// switch.
|
|
void ARMAsmParser::FixModeAfterArchChange(bool WasThumb, SMLoc Loc) {
|
|
if (WasThumb != isThumb()) {
|
|
if (WasThumb && hasThumb()) {
|
|
// Stay in Thumb mode
|
|
SwitchMode();
|
|
} else if (!WasThumb && hasARM()) {
|
|
// Stay in ARM mode
|
|
SwitchMode();
|
|
} else {
|
|
// Mode switch forced, because the new arch doesn't support the old mode.
|
|
getParser().getStreamer().EmitAssemblerFlag(isThumb() ? MCAF_Code16
|
|
: MCAF_Code32);
|
|
// Warn about the implcit mode switch. GAS does not switch modes here,
|
|
// but instead stays in the old mode, reporting an error on any following
|
|
// instructions as the mode does not exist on the target.
|
|
Warning(Loc, Twine("new target does not support ") +
|
|
(WasThumb ? "thumb" : "arm") + " mode, switching to " +
|
|
(!WasThumb ? "thumb" : "arm") + " mode");
|
|
}
|
|
}
|
|
}
|
|
|
|
/// parseDirectiveArch
|
|
/// ::= .arch token
|
|
bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
|
|
StringRef Arch = getParser().parseStringToEndOfStatement().trim();
|
|
|
|
unsigned ID = ARM::parseArch(Arch);
|
|
|
|
if (ID == ARM::AK_INVALID) {
|
|
Error(L, "Unknown arch name");
|
|
return false;
|
|
}
|
|
|
|
bool WasThumb = isThumb();
|
|
Triple T;
|
|
MCSubtargetInfo &STI = copySTI();
|
|
STI.setDefaultFeatures("", ("+" + ARM::getArchName(ID)).str());
|
|
setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
|
|
FixModeAfterArchChange(WasThumb, L);
|
|
|
|
getTargetStreamer().emitArch(ID);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveEabiAttr
|
|
/// ::= .eabi_attribute int, int [, "str"]
|
|
/// ::= .eabi_attribute Tag_name, int [, "str"]
|
|
bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
int64_t Tag;
|
|
SMLoc TagLoc;
|
|
TagLoc = Parser.getTok().getLoc();
|
|
if (Parser.getTok().is(AsmToken::Identifier)) {
|
|
StringRef Name = Parser.getTok().getIdentifier();
|
|
Tag = ARMBuildAttrs::AttrTypeFromString(Name);
|
|
if (Tag == -1) {
|
|
Error(TagLoc, "attribute name not recognised: " + Name);
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
} else {
|
|
const MCExpr *AttrExpr;
|
|
|
|
TagLoc = Parser.getTok().getLoc();
|
|
if (Parser.parseExpression(AttrExpr)) {
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(AttrExpr);
|
|
if (!CE) {
|
|
Error(TagLoc, "expected numeric constant");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
Tag = CE->getValue();
|
|
}
|
|
|
|
if (Parser.getTok().isNot(AsmToken::Comma)) {
|
|
Error(Parser.getTok().getLoc(), "comma expected");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
Parser.Lex(); // skip comma
|
|
|
|
StringRef StringValue = "";
|
|
bool IsStringValue = false;
|
|
|
|
int64_t IntegerValue = 0;
|
|
bool IsIntegerValue = false;
|
|
|
|
if (Tag == ARMBuildAttrs::CPU_raw_name || Tag == ARMBuildAttrs::CPU_name)
|
|
IsStringValue = true;
|
|
else if (Tag == ARMBuildAttrs::compatibility) {
|
|
IsStringValue = true;
|
|
IsIntegerValue = true;
|
|
} else if (Tag < 32 || Tag % 2 == 0)
|
|
IsIntegerValue = true;
|
|
else if (Tag % 2 == 1)
|
|
IsStringValue = true;
|
|
else
|
|
llvm_unreachable("invalid tag type");
|
|
|
|
if (IsIntegerValue) {
|
|
const MCExpr *ValueExpr;
|
|
SMLoc ValueExprLoc = Parser.getTok().getLoc();
|
|
if (Parser.parseExpression(ValueExpr)) {
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ValueExpr);
|
|
if (!CE) {
|
|
Error(ValueExprLoc, "expected numeric constant");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
IntegerValue = CE->getValue();
|
|
}
|
|
|
|
if (Tag == ARMBuildAttrs::compatibility) {
|
|
if (Parser.getTok().isNot(AsmToken::Comma))
|
|
IsStringValue = false;
|
|
if (Parser.getTok().isNot(AsmToken::Comma)) {
|
|
Error(Parser.getTok().getLoc(), "comma expected");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
} else {
|
|
Parser.Lex();
|
|
}
|
|
}
|
|
|
|
if (IsStringValue) {
|
|
if (Parser.getTok().isNot(AsmToken::String)) {
|
|
Error(Parser.getTok().getLoc(), "bad string constant");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
StringValue = Parser.getTok().getStringContents();
|
|
Parser.Lex();
|
|
}
|
|
|
|
if (IsIntegerValue && IsStringValue) {
|
|
assert(Tag == ARMBuildAttrs::compatibility);
|
|
getTargetStreamer().emitIntTextAttribute(Tag, IntegerValue, StringValue);
|
|
} else if (IsIntegerValue)
|
|
getTargetStreamer().emitAttribute(Tag, IntegerValue);
|
|
else if (IsStringValue)
|
|
getTargetStreamer().emitTextAttribute(Tag, StringValue);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveCPU
|
|
/// ::= .cpu str
|
|
bool ARMAsmParser::parseDirectiveCPU(SMLoc L) {
|
|
StringRef CPU = getParser().parseStringToEndOfStatement().trim();
|
|
getTargetStreamer().emitTextAttribute(ARMBuildAttrs::CPU_name, CPU);
|
|
|
|
// FIXME: This is using table-gen data, but should be moved to
|
|
// ARMTargetParser once that is table-gen'd.
|
|
if (!getSTI().isCPUStringValid(CPU)) {
|
|
Error(L, "Unknown CPU name");
|
|
return false;
|
|
}
|
|
|
|
bool WasThumb = isThumb();
|
|
MCSubtargetInfo &STI = copySTI();
|
|
STI.setDefaultFeatures(CPU, "");
|
|
setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
|
|
FixModeAfterArchChange(WasThumb, L);
|
|
|
|
return false;
|
|
}
|
|
/// parseDirectiveFPU
|
|
/// ::= .fpu str
|
|
bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
|
|
SMLoc FPUNameLoc = getTok().getLoc();
|
|
StringRef FPU = getParser().parseStringToEndOfStatement().trim();
|
|
|
|
unsigned ID = ARM::parseFPU(FPU);
|
|
std::vector<const char *> Features;
|
|
if (!ARM::getFPUFeatures(ID, Features)) {
|
|
Error(FPUNameLoc, "Unknown FPU name");
|
|
return false;
|
|
}
|
|
|
|
MCSubtargetInfo &STI = copySTI();
|
|
for (auto Feature : Features)
|
|
STI.ApplyFeatureFlag(Feature);
|
|
setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
|
|
|
|
getTargetStreamer().emitFPU(ID);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveFnStart
|
|
/// ::= .fnstart
|
|
bool ARMAsmParser::parseDirectiveFnStart(SMLoc L) {
|
|
if (UC.hasFnStart()) {
|
|
Error(L, ".fnstart starts before the end of previous one");
|
|
UC.emitFnStartLocNotes();
|
|
return false;
|
|
}
|
|
|
|
// Reset the unwind directives parser state
|
|
UC.reset();
|
|
|
|
getTargetStreamer().emitFnStart();
|
|
|
|
UC.recordFnStart(L);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveFnEnd
|
|
/// ::= .fnend
|
|
bool ARMAsmParser::parseDirectiveFnEnd(SMLoc L) {
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .fnend directive");
|
|
return false;
|
|
}
|
|
|
|
// Reset the unwind directives parser state
|
|
getTargetStreamer().emitFnEnd();
|
|
|
|
UC.reset();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveCantUnwind
|
|
/// ::= .cantunwind
|
|
bool ARMAsmParser::parseDirectiveCantUnwind(SMLoc L) {
|
|
UC.recordCantUnwind(L);
|
|
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .cantunwind directive");
|
|
return false;
|
|
}
|
|
if (UC.hasHandlerData()) {
|
|
Error(L, ".cantunwind can't be used with .handlerdata directive");
|
|
UC.emitHandlerDataLocNotes();
|
|
return false;
|
|
}
|
|
if (UC.hasPersonality()) {
|
|
Error(L, ".cantunwind can't be used with .personality directive");
|
|
UC.emitPersonalityLocNotes();
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().emitCantUnwind();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectivePersonality
|
|
/// ::= .personality name
|
|
bool ARMAsmParser::parseDirectivePersonality(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
bool HasExistingPersonality = UC.hasPersonality();
|
|
|
|
UC.recordPersonality(L);
|
|
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .personality directive");
|
|
return false;
|
|
}
|
|
if (UC.cantUnwind()) {
|
|
Error(L, ".personality can't be used with .cantunwind directive");
|
|
UC.emitCantUnwindLocNotes();
|
|
return false;
|
|
}
|
|
if (UC.hasHandlerData()) {
|
|
Error(L, ".personality must precede .handlerdata directive");
|
|
UC.emitHandlerDataLocNotes();
|
|
return false;
|
|
}
|
|
if (HasExistingPersonality) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, "multiple personality directives");
|
|
UC.emitPersonalityLocNotes();
|
|
return false;
|
|
}
|
|
|
|
// Parse the name of the personality routine
|
|
if (Parser.getTok().isNot(AsmToken::Identifier)) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, "unexpected input in .personality directive.");
|
|
return false;
|
|
}
|
|
StringRef Name(Parser.getTok().getIdentifier());
|
|
Parser.Lex();
|
|
|
|
MCSymbol *PR = getParser().getContext().getOrCreateSymbol(Name);
|
|
getTargetStreamer().emitPersonality(PR);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveHandlerData
|
|
/// ::= .handlerdata
|
|
bool ARMAsmParser::parseDirectiveHandlerData(SMLoc L) {
|
|
UC.recordHandlerData(L);
|
|
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .personality directive");
|
|
return false;
|
|
}
|
|
if (UC.cantUnwind()) {
|
|
Error(L, ".handlerdata can't be used with .cantunwind directive");
|
|
UC.emitCantUnwindLocNotes();
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().emitHandlerData();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveSetFP
|
|
/// ::= .setfp fpreg, spreg [, offset]
|
|
bool ARMAsmParser::parseDirectiveSetFP(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .setfp directive");
|
|
return false;
|
|
}
|
|
if (UC.hasHandlerData()) {
|
|
Error(L, ".setfp must precede .handlerdata directive");
|
|
return false;
|
|
}
|
|
|
|
// Parse fpreg
|
|
SMLoc FPRegLoc = Parser.getTok().getLoc();
|
|
int FPReg = tryParseRegister();
|
|
if (FPReg == -1) {
|
|
Error(FPRegLoc, "frame pointer register expected");
|
|
return false;
|
|
}
|
|
|
|
// Consume comma
|
|
if (Parser.getTok().isNot(AsmToken::Comma)) {
|
|
Error(Parser.getTok().getLoc(), "comma expected");
|
|
return false;
|
|
}
|
|
Parser.Lex(); // skip comma
|
|
|
|
// Parse spreg
|
|
SMLoc SPRegLoc = Parser.getTok().getLoc();
|
|
int SPReg = tryParseRegister();
|
|
if (SPReg == -1) {
|
|
Error(SPRegLoc, "stack pointer register expected");
|
|
return false;
|
|
}
|
|
|
|
if (SPReg != ARM::SP && SPReg != UC.getFPReg()) {
|
|
Error(SPRegLoc, "register should be either $sp or the latest fp register");
|
|
return false;
|
|
}
|
|
|
|
// Update the frame pointer register
|
|
UC.saveFPReg(FPReg);
|
|
|
|
// Parse offset
|
|
int64_t Offset = 0;
|
|
if (Parser.getTok().is(AsmToken::Comma)) {
|
|
Parser.Lex(); // skip comma
|
|
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return false;
|
|
}
|
|
Parser.Lex(); // skip hash token.
|
|
|
|
const MCExpr *OffsetExpr;
|
|
SMLoc ExLoc = Parser.getTok().getLoc();
|
|
SMLoc EndLoc;
|
|
if (getParser().parseExpression(OffsetExpr, EndLoc)) {
|
|
Error(ExLoc, "malformed setfp offset");
|
|
return false;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
|
|
if (!CE) {
|
|
Error(ExLoc, "setfp offset must be an immediate");
|
|
return false;
|
|
}
|
|
|
|
Offset = CE->getValue();
|
|
}
|
|
|
|
getTargetStreamer().emitSetFP(static_cast<unsigned>(FPReg),
|
|
static_cast<unsigned>(SPReg), Offset);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirective
|
|
/// ::= .pad offset
|
|
bool ARMAsmParser::parseDirectivePad(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .pad directive");
|
|
return false;
|
|
}
|
|
if (UC.hasHandlerData()) {
|
|
Error(L, ".pad must precede .handlerdata directive");
|
|
return false;
|
|
}
|
|
|
|
// Parse the offset
|
|
if (Parser.getTok().isNot(AsmToken::Hash) &&
|
|
Parser.getTok().isNot(AsmToken::Dollar)) {
|
|
Error(Parser.getTok().getLoc(), "'#' expected");
|
|
return false;
|
|
}
|
|
Parser.Lex(); // skip hash token.
|
|
|
|
const MCExpr *OffsetExpr;
|
|
SMLoc ExLoc = Parser.getTok().getLoc();
|
|
SMLoc EndLoc;
|
|
if (getParser().parseExpression(OffsetExpr, EndLoc)) {
|
|
Error(ExLoc, "malformed pad offset");
|
|
return false;
|
|
}
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
|
|
if (!CE) {
|
|
Error(ExLoc, "pad offset must be an immediate");
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().emitPad(CE->getValue());
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveRegSave
|
|
/// ::= .save { registers }
|
|
/// ::= .vsave { registers }
|
|
bool ARMAsmParser::parseDirectiveRegSave(SMLoc L, bool IsVector) {
|
|
// Check the ordering of unwind directives
|
|
if (!UC.hasFnStart()) {
|
|
Error(L, ".fnstart must precede .save or .vsave directives");
|
|
return false;
|
|
}
|
|
if (UC.hasHandlerData()) {
|
|
Error(L, ".save or .vsave must precede .handlerdata directive");
|
|
return false;
|
|
}
|
|
|
|
// RAII object to make sure parsed operands are deleted.
|
|
SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Operands;
|
|
|
|
// Parse the register list
|
|
if (parseRegisterList(Operands))
|
|
return false;
|
|
ARMOperand &Op = (ARMOperand &)*Operands[0];
|
|
if (!IsVector && !Op.isRegList()) {
|
|
Error(L, ".save expects GPR registers");
|
|
return false;
|
|
}
|
|
if (IsVector && !Op.isDPRRegList()) {
|
|
Error(L, ".vsave expects DPR registers");
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().emitRegSave(Op.getRegList(), IsVector);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveInst
|
|
/// ::= .inst opcode [, ...]
|
|
/// ::= .inst.n opcode [, ...]
|
|
/// ::= .inst.w opcode [, ...]
|
|
bool ARMAsmParser::parseDirectiveInst(SMLoc Loc, char Suffix) {
|
|
MCAsmParser &Parser = getParser();
|
|
int Width;
|
|
|
|
if (isThumb()) {
|
|
switch (Suffix) {
|
|
case 'n':
|
|
Width = 2;
|
|
break;
|
|
case 'w':
|
|
Width = 4;
|
|
break;
|
|
default:
|
|
Parser.eatToEndOfStatement();
|
|
Error(Loc, "cannot determine Thumb instruction size, "
|
|
"use inst.n/inst.w instead");
|
|
return false;
|
|
}
|
|
} else {
|
|
if (Suffix) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(Loc, "width suffixes are invalid in ARM mode");
|
|
return false;
|
|
}
|
|
Width = 4;
|
|
}
|
|
|
|
if (getLexer().is(AsmToken::EndOfStatement)) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(Loc, "expected expression following directive");
|
|
return false;
|
|
}
|
|
|
|
for (;;) {
|
|
const MCExpr *Expr;
|
|
|
|
if (getParser().parseExpression(Expr)) {
|
|
Error(Loc, "expected expression");
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *Value = dyn_cast_or_null<MCConstantExpr>(Expr);
|
|
if (!Value) {
|
|
Error(Loc, "expected constant expression");
|
|
return false;
|
|
}
|
|
|
|
switch (Width) {
|
|
case 2:
|
|
if (Value->getValue() > 0xffff) {
|
|
Error(Loc, "inst.n operand is too big, use inst.w instead");
|
|
return false;
|
|
}
|
|
break;
|
|
case 4:
|
|
if (Value->getValue() > 0xffffffff) {
|
|
Error(Loc,
|
|
StringRef(Suffix ? "inst.w" : "inst") + " operand is too big");
|
|
return false;
|
|
}
|
|
break;
|
|
default:
|
|
llvm_unreachable("only supported widths are 2 and 4");
|
|
}
|
|
|
|
getTargetStreamer().emitInst(Value->getValue(), Suffix);
|
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
|
break;
|
|
|
|
if (getLexer().isNot(AsmToken::Comma)) {
|
|
Error(Loc, "unexpected token in directive");
|
|
return false;
|
|
}
|
|
|
|
Parser.Lex();
|
|
}
|
|
|
|
Parser.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveLtorg
|
|
/// ::= .ltorg | .pool
|
|
bool ARMAsmParser::parseDirectiveLtorg(SMLoc L) {
|
|
getTargetStreamer().emitCurrentConstantPool();
|
|
return false;
|
|
}
|
|
|
|
bool ARMAsmParser::parseDirectiveEven(SMLoc L) {
|
|
const MCSection *Section = getStreamer().getCurrentSection().first;
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
TokError("unexpected token in directive");
|
|
return false;
|
|
}
|
|
|
|
if (!Section) {
|
|
getStreamer().InitSections(false);
|
|
Section = getStreamer().getCurrentSection().first;
|
|
}
|
|
|
|
assert(Section && "must have section to emit alignment");
|
|
if (Section->UseCodeAlign())
|
|
getStreamer().EmitCodeAlignment(2);
|
|
else
|
|
getStreamer().EmitValueToAlignment(2);
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectivePersonalityIndex
|
|
/// ::= .personalityindex index
|
|
bool ARMAsmParser::parseDirectivePersonalityIndex(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
bool HasExistingPersonality = UC.hasPersonality();
|
|
|
|
UC.recordPersonalityIndex(L);
|
|
|
|
if (!UC.hasFnStart()) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, ".fnstart must precede .personalityindex directive");
|
|
return false;
|
|
}
|
|
if (UC.cantUnwind()) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, ".personalityindex cannot be used with .cantunwind");
|
|
UC.emitCantUnwindLocNotes();
|
|
return false;
|
|
}
|
|
if (UC.hasHandlerData()) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, ".personalityindex must precede .handlerdata directive");
|
|
UC.emitHandlerDataLocNotes();
|
|
return false;
|
|
}
|
|
if (HasExistingPersonality) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, "multiple personality directives");
|
|
UC.emitPersonalityLocNotes();
|
|
return false;
|
|
}
|
|
|
|
const MCExpr *IndexExpression;
|
|
SMLoc IndexLoc = Parser.getTok().getLoc();
|
|
if (Parser.parseExpression(IndexExpression)) {
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(IndexExpression);
|
|
if (!CE) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(IndexLoc, "index must be a constant number");
|
|
return false;
|
|
}
|
|
if (CE->getValue() < 0 ||
|
|
CE->getValue() >= ARM::EHABI::NUM_PERSONALITY_INDEX) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(IndexLoc, "personality routine index should be in range [0-3]");
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().emitPersonalityIndex(CE->getValue());
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveUnwindRaw
|
|
/// ::= .unwind_raw offset, opcode [, opcode...]
|
|
bool ARMAsmParser::parseDirectiveUnwindRaw(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (!UC.hasFnStart()) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, ".fnstart must precede .unwind_raw directives");
|
|
return false;
|
|
}
|
|
|
|
int64_t StackOffset;
|
|
|
|
const MCExpr *OffsetExpr;
|
|
SMLoc OffsetLoc = getLexer().getLoc();
|
|
if (getLexer().is(AsmToken::EndOfStatement) ||
|
|
getParser().parseExpression(OffsetExpr)) {
|
|
Error(OffsetLoc, "expected expression");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
|
|
if (!CE) {
|
|
Error(OffsetLoc, "offset must be a constant");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
StackOffset = CE->getValue();
|
|
|
|
if (getLexer().isNot(AsmToken::Comma)) {
|
|
Error(getLexer().getLoc(), "expected comma");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
SmallVector<uint8_t, 16> Opcodes;
|
|
for (;;) {
|
|
const MCExpr *OE;
|
|
|
|
SMLoc OpcodeLoc = getLexer().getLoc();
|
|
if (getLexer().is(AsmToken::EndOfStatement) || Parser.parseExpression(OE)) {
|
|
Error(OpcodeLoc, "expected opcode expression");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *OC = dyn_cast<MCConstantExpr>(OE);
|
|
if (!OC) {
|
|
Error(OpcodeLoc, "opcode value must be a constant");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const int64_t Opcode = OC->getValue();
|
|
if (Opcode & ~0xff) {
|
|
Error(OpcodeLoc, "invalid opcode");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
Opcodes.push_back(uint8_t(Opcode));
|
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
|
break;
|
|
|
|
if (getLexer().isNot(AsmToken::Comma)) {
|
|
Error(getLexer().getLoc(), "unexpected token in directive");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
Parser.Lex();
|
|
}
|
|
|
|
getTargetStreamer().emitUnwindRaw(StackOffset, Opcodes);
|
|
|
|
Parser.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveTLSDescSeq
|
|
/// ::= .tlsdescseq tls-variable
|
|
bool ARMAsmParser::parseDirectiveTLSDescSeq(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
|
|
if (getLexer().isNot(AsmToken::Identifier)) {
|
|
TokError("expected variable after '.tlsdescseq' directive");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
const MCSymbolRefExpr *SRE =
|
|
MCSymbolRefExpr::create(Parser.getTok().getIdentifier(),
|
|
MCSymbolRefExpr::VK_ARM_TLSDESCSEQ, getContext());
|
|
Lex();
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(Parser.getTok().getLoc(), "unexpected token");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().AnnotateTLSDescriptorSequence(SRE);
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveMovSP
|
|
/// ::= .movsp reg [, #offset]
|
|
bool ARMAsmParser::parseDirectiveMovSP(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (!UC.hasFnStart()) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, ".fnstart must precede .movsp directives");
|
|
return false;
|
|
}
|
|
if (UC.getFPReg() != ARM::SP) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(L, "unexpected .movsp directive");
|
|
return false;
|
|
}
|
|
|
|
SMLoc SPRegLoc = Parser.getTok().getLoc();
|
|
int SPReg = tryParseRegister();
|
|
if (SPReg == -1) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(SPRegLoc, "register expected");
|
|
return false;
|
|
}
|
|
|
|
if (SPReg == ARM::SP || SPReg == ARM::PC) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(SPRegLoc, "sp and pc are not permitted in .movsp directive");
|
|
return false;
|
|
}
|
|
|
|
int64_t Offset = 0;
|
|
if (Parser.getTok().is(AsmToken::Comma)) {
|
|
Parser.Lex();
|
|
|
|
if (Parser.getTok().isNot(AsmToken::Hash)) {
|
|
Error(Parser.getTok().getLoc(), "expected #constant");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
Parser.Lex();
|
|
|
|
const MCExpr *OffsetExpr;
|
|
SMLoc OffsetLoc = Parser.getTok().getLoc();
|
|
if (Parser.parseExpression(OffsetExpr)) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(OffsetLoc, "malformed offset expression");
|
|
return false;
|
|
}
|
|
|
|
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
|
|
if (!CE) {
|
|
Parser.eatToEndOfStatement();
|
|
Error(OffsetLoc, "offset must be an immediate constant");
|
|
return false;
|
|
}
|
|
|
|
Offset = CE->getValue();
|
|
}
|
|
|
|
getTargetStreamer().emitMovSP(SPReg, Offset);
|
|
UC.saveFPReg(SPReg);
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveObjectArch
|
|
/// ::= .object_arch name
|
|
bool ARMAsmParser::parseDirectiveObjectArch(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
if (getLexer().isNot(AsmToken::Identifier)) {
|
|
Error(getLexer().getLoc(), "unexpected token");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
StringRef Arch = Parser.getTok().getString();
|
|
SMLoc ArchLoc = Parser.getTok().getLoc();
|
|
getLexer().Lex();
|
|
|
|
unsigned ID = ARM::parseArch(Arch);
|
|
|
|
if (ID == ARM::AK_INVALID) {
|
|
Error(ArchLoc, "unknown architecture '" + Arch + "'");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
getTargetStreamer().emitObjectArch(ID);
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
Error(getLexer().getLoc(), "unexpected token");
|
|
Parser.eatToEndOfStatement();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveAlign
|
|
/// ::= .align
|
|
bool ARMAsmParser::parseDirectiveAlign(SMLoc L) {
|
|
// NOTE: if this is not the end of the statement, fall back to the target
|
|
// agnostic handling for this directive which will correctly handle this.
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
|
return true;
|
|
|
|
// '.align' is target specifically handled to mean 2**2 byte alignment.
|
|
const MCSection *Section = getStreamer().getCurrentSection().first;
|
|
assert(Section && "must have section to emit alignment");
|
|
if (Section->UseCodeAlign())
|
|
getStreamer().EmitCodeAlignment(4, 0);
|
|
else
|
|
getStreamer().EmitValueToAlignment(4, 0, 1, 0);
|
|
|
|
return false;
|
|
}
|
|
|
|
/// parseDirectiveThumbSet
|
|
/// ::= .thumb_set name, value
|
|
bool ARMAsmParser::parseDirectiveThumbSet(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
|
|
StringRef Name;
|
|
if (Parser.parseIdentifier(Name)) {
|
|
TokError("expected identifier after '.thumb_set'");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
if (getLexer().isNot(AsmToken::Comma)) {
|
|
TokError("expected comma after name '" + Name + "'");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
Lex();
|
|
|
|
MCSymbol *Sym;
|
|
const MCExpr *Value;
|
|
if (MCParserUtils::parseAssignmentExpression(Name, /* allow_redef */ true,
|
|
Parser, Sym, Value))
|
|
return true;
|
|
|
|
getTargetStreamer().emitThumbSet(Sym, Value);
|
|
return false;
|
|
}
|
|
|
|
/// Force static initialization.
|
|
extern "C" void LLVMInitializeARMAsmParser() {
|
|
RegisterMCAsmParser<ARMAsmParser> X(TheARMLETarget);
|
|
RegisterMCAsmParser<ARMAsmParser> Y(TheARMBETarget);
|
|
RegisterMCAsmParser<ARMAsmParser> A(TheThumbLETarget);
|
|
RegisterMCAsmParser<ARMAsmParser> B(TheThumbBETarget);
|
|
}
|
|
|
|
#define GET_REGISTER_MATCHER
|
|
#define GET_SUBTARGET_FEATURE_NAME
|
|
#define GET_MATCHER_IMPLEMENTATION
|
|
#include "ARMGenAsmMatcher.inc"
|
|
|
|
// FIXME: This structure should be moved inside ARMTargetParser
|
|
// when we start to table-generate them, and we can use the ARM
|
|
// flags below, that were generated by table-gen.
|
|
static const struct {
|
|
const unsigned Kind;
|
|
const uint64_t ArchCheck;
|
|
const FeatureBitset Features;
|
|
} Extensions[] = {
|
|
{ ARM::AEK_CRC, Feature_HasV8, {ARM::FeatureCRC} },
|
|
{ ARM::AEK_CRYPTO, Feature_HasV8,
|
|
{ARM::FeatureCrypto, ARM::FeatureNEON, ARM::FeatureFPARMv8} },
|
|
{ ARM::AEK_FP, Feature_HasV8, {ARM::FeatureFPARMv8} },
|
|
{ (ARM::AEK_HWDIV | ARM::AEK_HWDIVARM), Feature_HasV7 | Feature_IsNotMClass,
|
|
{ARM::FeatureHWDiv, ARM::FeatureHWDivARM} },
|
|
{ ARM::AEK_MP, Feature_HasV7 | Feature_IsNotMClass, {ARM::FeatureMP} },
|
|
{ ARM::AEK_SIMD, Feature_HasV8, {ARM::FeatureNEON, ARM::FeatureFPARMv8} },
|
|
{ ARM::AEK_SEC, Feature_HasV6K, {ARM::FeatureTrustZone} },
|
|
// FIXME: Only available in A-class, isel not predicated
|
|
{ ARM::AEK_VIRT, Feature_HasV7, {ARM::FeatureVirtualization} },
|
|
{ ARM::AEK_FP16, Feature_HasV8_2a, {ARM::FeatureFPARMv8, ARM::FeatureFullFP16} },
|
|
// FIXME: Unsupported extensions.
|
|
{ ARM::AEK_OS, Feature_None, {} },
|
|
{ ARM::AEK_IWMMXT, Feature_None, {} },
|
|
{ ARM::AEK_IWMMXT2, Feature_None, {} },
|
|
{ ARM::AEK_MAVERICK, Feature_None, {} },
|
|
{ ARM::AEK_XSCALE, Feature_None, {} },
|
|
};
|
|
|
|
/// parseDirectiveArchExtension
|
|
/// ::= .arch_extension [no]feature
|
|
bool ARMAsmParser::parseDirectiveArchExtension(SMLoc L) {
|
|
MCAsmParser &Parser = getParser();
|
|
|
|
if (getLexer().isNot(AsmToken::Identifier)) {
|
|
Error(getLexer().getLoc(), "unexpected token");
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
StringRef Name = Parser.getTok().getString();
|
|
SMLoc ExtLoc = Parser.getTok().getLoc();
|
|
getLexer().Lex();
|
|
|
|
bool EnableFeature = true;
|
|
if (Name.startswith_lower("no")) {
|
|
EnableFeature = false;
|
|
Name = Name.substr(2);
|
|
}
|
|
unsigned FeatureKind = ARM::parseArchExt(Name);
|
|
if (FeatureKind == ARM::AEK_INVALID)
|
|
Error(ExtLoc, "unknown architectural extension: " + Name);
|
|
|
|
for (const auto &Extension : Extensions) {
|
|
if (Extension.Kind != FeatureKind)
|
|
continue;
|
|
|
|
if (Extension.Features.none())
|
|
report_fatal_error("unsupported architectural extension: " + Name);
|
|
|
|
if ((getAvailableFeatures() & Extension.ArchCheck) != Extension.ArchCheck) {
|
|
Error(ExtLoc, "architectural extension '" + Name + "' is not "
|
|
"allowed for the current base architecture");
|
|
return false;
|
|
}
|
|
|
|
MCSubtargetInfo &STI = copySTI();
|
|
FeatureBitset ToggleFeatures = EnableFeature
|
|
? (~STI.getFeatureBits() & Extension.Features)
|
|
: ( STI.getFeatureBits() & Extension.Features);
|
|
|
|
uint64_t Features =
|
|
ComputeAvailableFeatures(STI.ToggleFeature(ToggleFeatures));
|
|
setAvailableFeatures(Features);
|
|
return false;
|
|
}
|
|
|
|
Error(ExtLoc, "unknown architectural extension: " + Name);
|
|
Parser.eatToEndOfStatement();
|
|
return false;
|
|
}
|
|
|
|
// Define this matcher function after the auto-generated include so we
|
|
// have the match class enum definitions.
|
|
unsigned ARMAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
|
|
unsigned Kind) {
|
|
ARMOperand &Op = static_cast<ARMOperand &>(AsmOp);
|
|
// If the kind is a token for a literal immediate, check if our asm
|
|
// operand matches. This is for InstAliases which have a fixed-value
|
|
// immediate in the syntax.
|
|
switch (Kind) {
|
|
default: break;
|
|
case MCK__35_0:
|
|
if (Op.isImm())
|
|
if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm()))
|
|
if (CE->getValue() == 0)
|
|
return Match_Success;
|
|
break;
|
|
case MCK_ModImm:
|
|
if (Op.isImm()) {
|
|
const MCExpr *SOExpr = Op.getImm();
|
|
int64_t Value;
|
|
if (!SOExpr->evaluateAsAbsolute(Value))
|
|
return Match_Success;
|
|
assert((Value >= INT32_MIN && Value <= UINT32_MAX) &&
|
|
"expression value must be representable in 32 bits");
|
|
}
|
|
break;
|
|
case MCK_rGPR:
|
|
if (hasV8Ops() && Op.isReg() && Op.getReg() == ARM::SP)
|
|
return Match_Success;
|
|
break;
|
|
case MCK_GPRPair:
|
|
if (Op.isReg() &&
|
|
MRI->getRegClass(ARM::GPRRegClassID).contains(Op.getReg()))
|
|
return Match_Success;
|
|
break;
|
|
}
|
|
return Match_InvalidOperand;
|
|
}
|