forked from OSchip/llvm-project
1327 lines
46 KiB
C++
1327 lines
46 KiB
C++
//===-- MipsTargetStreamer.cpp - Mips Target Streamer Methods -------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides Mips specific target streamer methods.
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//
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//===----------------------------------------------------------------------===//
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#include "MipsTargetStreamer.h"
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#include "MipsInstPrinter.h"
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#include "MCTargetDesc/MipsABIInfo.h"
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#include "MipsELFStreamer.h"
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#include "MipsMCExpr.h"
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#include "MipsMCTargetDesc.h"
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#include "MipsTargetObjectFile.h"
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#include "llvm/BinaryFormat/ELF.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSectionELF.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/MCSymbolELF.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FormattedStream.h"
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using namespace llvm;
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namespace {
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static cl::opt<bool> RoundSectionSizes(
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"mips-round-section-sizes", cl::init(false),
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cl::desc("Round section sizes up to the section alignment"), cl::Hidden);
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} // end anonymous namespace
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static bool isMipsR6(const MCSubtargetInfo *STI) {
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return STI->getFeatureBits()[Mips::FeatureMips32r6] ||
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STI->getFeatureBits()[Mips::FeatureMips64r6];
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}
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static bool isMicroMips(const MCSubtargetInfo *STI) {
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return STI->getFeatureBits()[Mips::FeatureMicroMips];
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}
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MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S)
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: MCTargetStreamer(S), GPReg(Mips::GP), ModuleDirectiveAllowed(true) {
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GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
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}
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void MipsTargetStreamer::emitDirectiveSetMicroMips() {}
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void MipsTargetStreamer::emitDirectiveSetNoMicroMips() {}
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void MipsTargetStreamer::setUsesMicroMips() {}
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void MipsTargetStreamer::emitDirectiveSetMips16() {}
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void MipsTargetStreamer::emitDirectiveSetNoMips16() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetReorder() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetNoReorder() {}
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void MipsTargetStreamer::emitDirectiveSetMacro() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetNoMacro() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMsa() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetNoMsa() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMt() {}
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void MipsTargetStreamer::emitDirectiveSetNoMt() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetCRC() {}
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void MipsTargetStreamer::emitDirectiveSetNoCRC() {}
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void MipsTargetStreamer::emitDirectiveSetVirt() {}
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void MipsTargetStreamer::emitDirectiveSetNoVirt() {}
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void MipsTargetStreamer::emitDirectiveSetGINV() {}
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void MipsTargetStreamer::emitDirectiveSetNoGINV() {}
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void MipsTargetStreamer::emitDirectiveSetAt() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetAtWithArg(unsigned RegNo) {
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forbidModuleDirective();
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}
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void MipsTargetStreamer::emitDirectiveSetNoAt() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveEnd(StringRef Name) {}
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void MipsTargetStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {}
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void MipsTargetStreamer::emitDirectiveAbiCalls() {}
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void MipsTargetStreamer::emitDirectiveNaN2008() {}
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void MipsTargetStreamer::emitDirectiveNaNLegacy() {}
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void MipsTargetStreamer::emitDirectiveOptionPic0() {}
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void MipsTargetStreamer::emitDirectiveOptionPic2() {}
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void MipsTargetStreamer::emitDirectiveInsn() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
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unsigned ReturnReg) {}
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void MipsTargetStreamer::emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) {}
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void MipsTargetStreamer::emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) {
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}
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void MipsTargetStreamer::emitDirectiveSetArch(StringRef Arch) {
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forbidModuleDirective();
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}
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void MipsTargetStreamer::emitDirectiveSetMips0() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips1() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips2() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips3() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips4() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips5() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips32() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips32R2() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips32R3() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips32R5() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips32R6() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips64() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips64R2() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips64R3() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips64R5() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetMips64R6() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetPop() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetPush() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetSoftFloat() {
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forbidModuleDirective();
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}
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void MipsTargetStreamer::emitDirectiveSetHardFloat() {
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forbidModuleDirective();
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}
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void MipsTargetStreamer::emitDirectiveSetDsp() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetDspr2() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetNoDsp() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveCpLoad(unsigned RegNo) {}
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void MipsTargetStreamer::emitDirectiveCpLocal(unsigned RegNo) {
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// .cplocal $reg
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// This directive forces to use the alternate register for context pointer.
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// For example
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// .cplocal $4
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// jal foo
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// expands to
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// ld $25, %call16(foo)($4)
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// jalr $25
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if (!getABI().IsN32() && !getABI().IsN64())
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return;
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GPReg = RegNo;
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forbidModuleDirective();
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}
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bool MipsTargetStreamer::emitDirectiveCpRestore(
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int Offset, function_ref<unsigned()> GetATReg, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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forbidModuleDirective();
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return true;
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}
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void MipsTargetStreamer::emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
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const MCSymbol &Sym, bool IsReg) {
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}
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void MipsTargetStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
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bool SaveLocationIsRegister) {}
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void MipsTargetStreamer::emitDirectiveModuleFP() {}
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void MipsTargetStreamer::emitDirectiveModuleOddSPReg() {
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if (!ABIFlagsSection.OddSPReg && !ABIFlagsSection.Is32BitABI)
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report_fatal_error("+nooddspreg is only valid for O32");
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}
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void MipsTargetStreamer::emitDirectiveModuleSoftFloat() {}
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void MipsTargetStreamer::emitDirectiveModuleHardFloat() {}
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void MipsTargetStreamer::emitDirectiveModuleMT() {}
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void MipsTargetStreamer::emitDirectiveModuleCRC() {}
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void MipsTargetStreamer::emitDirectiveModuleNoCRC() {}
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void MipsTargetStreamer::emitDirectiveModuleVirt() {}
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void MipsTargetStreamer::emitDirectiveModuleNoVirt() {}
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void MipsTargetStreamer::emitDirectiveModuleGINV() {}
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void MipsTargetStreamer::emitDirectiveModuleNoGINV() {}
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void MipsTargetStreamer::emitDirectiveSetFp(
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MipsABIFlagsSection::FpABIKind Value) {
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forbidModuleDirective();
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}
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void MipsTargetStreamer::emitDirectiveSetOddSPReg() { forbidModuleDirective(); }
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void MipsTargetStreamer::emitDirectiveSetNoOddSPReg() {
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forbidModuleDirective();
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}
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void MipsTargetStreamer::emitR(unsigned Opcode, unsigned Reg0, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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TmpInst.addOperand(MCOperand::createReg(Reg0));
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TmpInst.setLoc(IDLoc);
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getStreamer().EmitInstruction(TmpInst, *STI);
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}
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void MipsTargetStreamer::emitRX(unsigned Opcode, unsigned Reg0, MCOperand Op1,
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SMLoc IDLoc, const MCSubtargetInfo *STI) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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TmpInst.addOperand(MCOperand::createReg(Reg0));
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TmpInst.addOperand(Op1);
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TmpInst.setLoc(IDLoc);
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getStreamer().EmitInstruction(TmpInst, *STI);
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}
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void MipsTargetStreamer::emitRI(unsigned Opcode, unsigned Reg0, int32_t Imm,
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SMLoc IDLoc, const MCSubtargetInfo *STI) {
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emitRX(Opcode, Reg0, MCOperand::createImm(Imm), IDLoc, STI);
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}
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void MipsTargetStreamer::emitRR(unsigned Opcode, unsigned Reg0, unsigned Reg1,
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SMLoc IDLoc, const MCSubtargetInfo *STI) {
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emitRX(Opcode, Reg0, MCOperand::createReg(Reg1), IDLoc, STI);
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}
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void MipsTargetStreamer::emitII(unsigned Opcode, int16_t Imm1, int16_t Imm2,
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SMLoc IDLoc, const MCSubtargetInfo *STI) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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TmpInst.addOperand(MCOperand::createImm(Imm1));
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TmpInst.addOperand(MCOperand::createImm(Imm2));
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TmpInst.setLoc(IDLoc);
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getStreamer().EmitInstruction(TmpInst, *STI);
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}
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void MipsTargetStreamer::emitRRX(unsigned Opcode, unsigned Reg0, unsigned Reg1,
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MCOperand Op2, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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TmpInst.addOperand(MCOperand::createReg(Reg0));
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TmpInst.addOperand(MCOperand::createReg(Reg1));
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TmpInst.addOperand(Op2);
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TmpInst.setLoc(IDLoc);
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getStreamer().EmitInstruction(TmpInst, *STI);
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}
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void MipsTargetStreamer::emitRRR(unsigned Opcode, unsigned Reg0, unsigned Reg1,
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unsigned Reg2, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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emitRRX(Opcode, Reg0, Reg1, MCOperand::createReg(Reg2), IDLoc, STI);
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}
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void MipsTargetStreamer::emitRRRX(unsigned Opcode, unsigned Reg0, unsigned Reg1,
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unsigned Reg2, MCOperand Op3, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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TmpInst.addOperand(MCOperand::createReg(Reg0));
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TmpInst.addOperand(MCOperand::createReg(Reg1));
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TmpInst.addOperand(MCOperand::createReg(Reg2));
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TmpInst.addOperand(Op3);
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TmpInst.setLoc(IDLoc);
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getStreamer().EmitInstruction(TmpInst, *STI);
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}
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void MipsTargetStreamer::emitRRI(unsigned Opcode, unsigned Reg0, unsigned Reg1,
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int16_t Imm, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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emitRRX(Opcode, Reg0, Reg1, MCOperand::createImm(Imm), IDLoc, STI);
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}
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void MipsTargetStreamer::emitRRIII(unsigned Opcode, unsigned Reg0,
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unsigned Reg1, int16_t Imm0, int16_t Imm1,
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int16_t Imm2, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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TmpInst.addOperand(MCOperand::createReg(Reg0));
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TmpInst.addOperand(MCOperand::createReg(Reg1));
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TmpInst.addOperand(MCOperand::createImm(Imm0));
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TmpInst.addOperand(MCOperand::createImm(Imm1));
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TmpInst.addOperand(MCOperand::createImm(Imm2));
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TmpInst.setLoc(IDLoc);
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getStreamer().EmitInstruction(TmpInst, *STI);
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}
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void MipsTargetStreamer::emitAddu(unsigned DstReg, unsigned SrcReg,
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unsigned TrgReg, bool Is64Bit,
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const MCSubtargetInfo *STI) {
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emitRRR(Is64Bit ? Mips::DADDu : Mips::ADDu, DstReg, SrcReg, TrgReg, SMLoc(),
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STI);
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}
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void MipsTargetStreamer::emitDSLL(unsigned DstReg, unsigned SrcReg,
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int16_t ShiftAmount, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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if (ShiftAmount >= 32) {
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emitRRI(Mips::DSLL32, DstReg, SrcReg, ShiftAmount - 32, IDLoc, STI);
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return;
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}
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emitRRI(Mips::DSLL, DstReg, SrcReg, ShiftAmount, IDLoc, STI);
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}
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void MipsTargetStreamer::emitEmptyDelaySlot(bool hasShortDelaySlot, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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if (hasShortDelaySlot)
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emitRR(Mips::MOVE16_MM, Mips::ZERO, Mips::ZERO, IDLoc, STI);
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else
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emitRRI(Mips::SLL, Mips::ZERO, Mips::ZERO, 0, IDLoc, STI);
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}
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void MipsTargetStreamer::emitNop(SMLoc IDLoc, const MCSubtargetInfo *STI) {
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if (isMicroMips(STI))
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emitRR(Mips::MOVE16_MM, Mips::ZERO, Mips::ZERO, IDLoc, STI);
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else
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emitRRI(Mips::SLL, Mips::ZERO, Mips::ZERO, 0, IDLoc, STI);
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}
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/// Emit the $gp restore operation for .cprestore.
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void MipsTargetStreamer::emitGPRestore(int Offset, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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emitLoadWithImmOffset(Mips::LW, GPReg, Mips::SP, Offset, GPReg, IDLoc, STI);
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}
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/// Emit a store instruction with an immediate offset.
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void MipsTargetStreamer::emitStoreWithImmOffset(
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unsigned Opcode, unsigned SrcReg, unsigned BaseReg, int64_t Offset,
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function_ref<unsigned()> GetATReg, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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if (isInt<16>(Offset)) {
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emitRRI(Opcode, SrcReg, BaseReg, Offset, IDLoc, STI);
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return;
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}
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// sw $8, offset($8) => lui $at, %hi(offset)
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// add $at, $at, $8
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// sw $8, %lo(offset)($at)
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unsigned ATReg = GetATReg();
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if (!ATReg)
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return;
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unsigned LoOffset = Offset & 0x0000ffff;
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unsigned HiOffset = (Offset & 0xffff0000) >> 16;
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// If msb of LoOffset is 1(negative number) we must increment HiOffset
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// to account for the sign-extension of the low part.
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if (LoOffset & 0x8000)
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HiOffset++;
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// Generate the base address in ATReg.
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emitRI(Mips::LUi, ATReg, HiOffset, IDLoc, STI);
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if (BaseReg != Mips::ZERO)
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emitRRR(Mips::ADDu, ATReg, ATReg, BaseReg, IDLoc, STI);
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// Emit the store with the adjusted base and offset.
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emitRRI(Opcode, SrcReg, ATReg, LoOffset, IDLoc, STI);
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}
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/// Emit a store instruction with an symbol offset.
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void MipsTargetStreamer::emitSCWithSymOffset(unsigned Opcode, unsigned SrcReg,
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unsigned BaseReg,
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MCOperand &HiOperand,
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MCOperand &LoOperand,
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unsigned ATReg, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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// sc $8, sym => lui $at, %hi(sym)
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// sc $8, %lo(sym)($at)
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// Generate the base address in ATReg.
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emitRX(Mips::LUi, ATReg, HiOperand, IDLoc, STI);
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if (!isMicroMips(STI) && isMipsR6(STI)) {
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// For non-micromips r6 offset for 'sc' is not in the lower 16 bits so we
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// put it in 'at'.
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// sc $8, sym => lui $at, %hi(sym)
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// addiu $at, $at, %lo(sym)
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// sc $8, 0($at)
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emitRRX(Mips::ADDiu, ATReg, ATReg, LoOperand, IDLoc, STI);
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MCOperand Offset = MCOperand::createImm(0);
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// Emit the store with the adjusted base and offset.
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emitRRRX(Opcode, SrcReg, SrcReg, ATReg, Offset, IDLoc, STI);
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} else {
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if (BaseReg != Mips::ZERO)
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emitRRR(Mips::ADDu, ATReg, ATReg, BaseReg, IDLoc, STI);
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// Emit the store with the adjusted base and offset.
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emitRRRX(Opcode, SrcReg, SrcReg, ATReg, LoOperand, IDLoc, STI);
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}
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}
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/// Emit a load instruction with an immediate offset. DstReg and TmpReg are
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/// permitted to be the same register iff DstReg is distinct from BaseReg and
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/// DstReg is a GPR. It is the callers responsibility to identify such cases
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/// and pass the appropriate register in TmpReg.
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void MipsTargetStreamer::emitLoadWithImmOffset(unsigned Opcode, unsigned DstReg,
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unsigned BaseReg, int64_t Offset,
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unsigned TmpReg, SMLoc IDLoc,
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const MCSubtargetInfo *STI) {
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if (isInt<16>(Offset)) {
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emitRRI(Opcode, DstReg, BaseReg, Offset, IDLoc, STI);
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return;
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}
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// 1) lw $8, offset($9) => lui $8, %hi(offset)
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// add $8, $8, $9
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// lw $8, %lo(offset)($9)
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// 2) lw $8, offset($8) => lui $at, %hi(offset)
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// add $at, $at, $8
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// lw $8, %lo(offset)($at)
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unsigned LoOffset = Offset & 0x0000ffff;
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unsigned HiOffset = (Offset & 0xffff0000) >> 16;
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// If msb of LoOffset is 1(negative number) we must increment HiOffset
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// to account for the sign-extension of the low part.
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if (LoOffset & 0x8000)
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HiOffset++;
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// Generate the base address in TmpReg.
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emitRI(Mips::LUi, TmpReg, HiOffset, IDLoc, STI);
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if (BaseReg != Mips::ZERO)
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emitRRR(Mips::ADDu, TmpReg, TmpReg, BaseReg, IDLoc, STI);
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// Emit the load with the adjusted base and offset.
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emitRRI(Opcode, DstReg, TmpReg, LoOffset, IDLoc, STI);
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}
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MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
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formatted_raw_ostream &OS)
|
|
: MipsTargetStreamer(S), OS(OS) {}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
|
|
OS << "\t.set\tmicromips\n";
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
|
|
OS << "\t.set\tnomicromips\n";
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
|
|
OS << "\t.set\tmips16\n";
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
|
|
OS << "\t.set\tnomips16\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoMips16();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
|
|
OS << "\t.set\treorder\n";
|
|
MipsTargetStreamer::emitDirectiveSetReorder();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
|
|
OS << "\t.set\tnoreorder\n";
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
|
|
OS << "\t.set\tmacro\n";
|
|
MipsTargetStreamer::emitDirectiveSetMacro();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
|
|
OS << "\t.set\tnomacro\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoMacro();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMsa() {
|
|
OS << "\t.set\tmsa\n";
|
|
MipsTargetStreamer::emitDirectiveSetMsa();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoMsa() {
|
|
OS << "\t.set\tnomsa\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoMsa();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMt() {
|
|
OS << "\t.set\tmt\n";
|
|
MipsTargetStreamer::emitDirectiveSetMt();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoMt() {
|
|
OS << "\t.set\tnomt\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoMt();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetCRC() {
|
|
OS << "\t.set\tcrc\n";
|
|
MipsTargetStreamer::emitDirectiveSetCRC();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoCRC() {
|
|
OS << "\t.set\tnocrc\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoCRC();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetVirt() {
|
|
OS << "\t.set\tvirt\n";
|
|
MipsTargetStreamer::emitDirectiveSetVirt();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoVirt() {
|
|
OS << "\t.set\tnovirt\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoVirt();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetGINV() {
|
|
OS << "\t.set\tginv\n";
|
|
MipsTargetStreamer::emitDirectiveSetGINV();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoGINV() {
|
|
OS << "\t.set\tnoginv\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoGINV();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetAt() {
|
|
OS << "\t.set\tat\n";
|
|
MipsTargetStreamer::emitDirectiveSetAt();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetAtWithArg(unsigned RegNo) {
|
|
OS << "\t.set\tat=$" << Twine(RegNo) << "\n";
|
|
MipsTargetStreamer::emitDirectiveSetAtWithArg(RegNo);
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
|
|
OS << "\t.set\tnoat\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoAt();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
|
|
OS << "\t.end\t" << Name << '\n';
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
|
|
OS << "\t.ent\t" << Symbol.getName() << '\n';
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveNaN2008() { OS << "\t.nan\t2008\n"; }
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveNaNLegacy() {
|
|
OS << "\t.nan\tlegacy\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
|
|
OS << "\t.option\tpic0\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveOptionPic2() {
|
|
OS << "\t.option\tpic2\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveInsn() {
|
|
MipsTargetStreamer::emitDirectiveInsn();
|
|
OS << "\t.insn\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
|
|
unsigned ReturnReg) {
|
|
OS << "\t.frame\t$"
|
|
<< StringRef(MipsInstPrinter::getRegisterName(StackReg)).lower() << ","
|
|
<< StackSize << ",$"
|
|
<< StringRef(MipsInstPrinter::getRegisterName(ReturnReg)).lower() << '\n';
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetArch(StringRef Arch) {
|
|
OS << "\t.set arch=" << Arch << "\n";
|
|
MipsTargetStreamer::emitDirectiveSetArch(Arch);
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips0() {
|
|
OS << "\t.set\tmips0\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips0();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips1() {
|
|
OS << "\t.set\tmips1\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips1();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips2() {
|
|
OS << "\t.set\tmips2\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips2();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips3() {
|
|
OS << "\t.set\tmips3\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips3();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips4() {
|
|
OS << "\t.set\tmips4\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips4();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips5() {
|
|
OS << "\t.set\tmips5\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips5();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips32() {
|
|
OS << "\t.set\tmips32\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips32();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips32R2() {
|
|
OS << "\t.set\tmips32r2\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips32R2();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips32R3() {
|
|
OS << "\t.set\tmips32r3\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips32R3();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips32R5() {
|
|
OS << "\t.set\tmips32r5\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips32R5();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips32R6() {
|
|
OS << "\t.set\tmips32r6\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips32R6();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips64() {
|
|
OS << "\t.set\tmips64\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips64();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips64R2() {
|
|
OS << "\t.set\tmips64r2\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips64R2();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips64R3() {
|
|
OS << "\t.set\tmips64r3\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips64R3();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips64R5() {
|
|
OS << "\t.set\tmips64r5\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips64R5();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetMips64R6() {
|
|
OS << "\t.set\tmips64r6\n";
|
|
MipsTargetStreamer::emitDirectiveSetMips64R6();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetDsp() {
|
|
OS << "\t.set\tdsp\n";
|
|
MipsTargetStreamer::emitDirectiveSetDsp();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetDspr2() {
|
|
OS << "\t.set\tdspr2\n";
|
|
MipsTargetStreamer::emitDirectiveSetDspr2();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoDsp() {
|
|
OS << "\t.set\tnodsp\n";
|
|
MipsTargetStreamer::emitDirectiveSetNoDsp();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetPop() {
|
|
OS << "\t.set\tpop\n";
|
|
MipsTargetStreamer::emitDirectiveSetPop();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetPush() {
|
|
OS << "\t.set\tpush\n";
|
|
MipsTargetStreamer::emitDirectiveSetPush();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetSoftFloat() {
|
|
OS << "\t.set\tsoftfloat\n";
|
|
MipsTargetStreamer::emitDirectiveSetSoftFloat();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetHardFloat() {
|
|
OS << "\t.set\thardfloat\n";
|
|
MipsTargetStreamer::emitDirectiveSetHardFloat();
|
|
}
|
|
|
|
// Print a 32 bit hex number with all numbers.
|
|
static void printHex32(unsigned Value, raw_ostream &OS) {
|
|
OS << "0x";
|
|
for (int i = 7; i >= 0; i--)
|
|
OS.write_hex((Value & (0xF << (i * 4))) >> (i * 4));
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitMask(unsigned CPUBitmask,
|
|
int CPUTopSavedRegOff) {
|
|
OS << "\t.mask \t";
|
|
printHex32(CPUBitmask, OS);
|
|
OS << ',' << CPUTopSavedRegOff << '\n';
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitFMask(unsigned FPUBitmask,
|
|
int FPUTopSavedRegOff) {
|
|
OS << "\t.fmask\t";
|
|
printHex32(FPUBitmask, OS);
|
|
OS << "," << FPUTopSavedRegOff << '\n';
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveCpLoad(unsigned RegNo) {
|
|
OS << "\t.cpload\t$"
|
|
<< StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << "\n";
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveCpLocal(unsigned RegNo) {
|
|
OS << "\t.cplocal\t$"
|
|
<< StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << "\n";
|
|
MipsTargetStreamer::emitDirectiveCpLocal(RegNo);
|
|
}
|
|
|
|
bool MipsTargetAsmStreamer::emitDirectiveCpRestore(
|
|
int Offset, function_ref<unsigned()> GetATReg, SMLoc IDLoc,
|
|
const MCSubtargetInfo *STI) {
|
|
MipsTargetStreamer::emitDirectiveCpRestore(Offset, GetATReg, IDLoc, STI);
|
|
OS << "\t.cprestore\t" << Offset << "\n";
|
|
return true;
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveCpsetup(unsigned RegNo,
|
|
int RegOrOffset,
|
|
const MCSymbol &Sym,
|
|
bool IsReg) {
|
|
OS << "\t.cpsetup\t$"
|
|
<< StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << ", ";
|
|
|
|
if (IsReg)
|
|
OS << "$"
|
|
<< StringRef(MipsInstPrinter::getRegisterName(RegOrOffset)).lower();
|
|
else
|
|
OS << RegOrOffset;
|
|
|
|
OS << ", ";
|
|
|
|
OS << Sym.getName();
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
|
|
bool SaveLocationIsRegister) {
|
|
OS << "\t.cpreturn";
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleFP() {
|
|
MipsABIFlagsSection::FpABIKind FpABI = ABIFlagsSection.getFpABI();
|
|
if (FpABI == MipsABIFlagsSection::FpABIKind::SOFT)
|
|
OS << "\t.module\tsoftfloat\n";
|
|
else
|
|
OS << "\t.module\tfp=" << ABIFlagsSection.getFpABIString(FpABI) << "\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetFp(
|
|
MipsABIFlagsSection::FpABIKind Value) {
|
|
MipsTargetStreamer::emitDirectiveSetFp(Value);
|
|
|
|
OS << "\t.set\tfp=";
|
|
OS << ABIFlagsSection.getFpABIString(Value) << "\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleOddSPReg() {
|
|
MipsTargetStreamer::emitDirectiveModuleOddSPReg();
|
|
|
|
OS << "\t.module\t" << (ABIFlagsSection.OddSPReg ? "" : "no") << "oddspreg\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetOddSPReg() {
|
|
MipsTargetStreamer::emitDirectiveSetOddSPReg();
|
|
OS << "\t.set\toddspreg\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveSetNoOddSPReg() {
|
|
MipsTargetStreamer::emitDirectiveSetNoOddSPReg();
|
|
OS << "\t.set\tnooddspreg\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleSoftFloat() {
|
|
OS << "\t.module\tsoftfloat\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleHardFloat() {
|
|
OS << "\t.module\thardfloat\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleMT() {
|
|
OS << "\t.module\tmt\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleCRC() {
|
|
OS << "\t.module\tcrc\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleNoCRC() {
|
|
OS << "\t.module\tnocrc\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleVirt() {
|
|
OS << "\t.module\tvirt\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleNoVirt() {
|
|
OS << "\t.module\tnovirt\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleGINV() {
|
|
OS << "\t.module\tginv\n";
|
|
}
|
|
|
|
void MipsTargetAsmStreamer::emitDirectiveModuleNoGINV() {
|
|
OS << "\t.module\tnoginv\n";
|
|
}
|
|
|
|
// This part is for ELF object output.
|
|
MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
|
|
const MCSubtargetInfo &STI)
|
|
: MipsTargetStreamer(S), MicroMipsEnabled(false), STI(STI) {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
|
|
// It's possible that MCObjectFileInfo isn't fully initialized at this point
|
|
// due to an initialization order problem where LLVMTargetMachine creates the
|
|
// target streamer before TargetLoweringObjectFile calls
|
|
// InitializeMCObjectFileInfo. There doesn't seem to be a single place that
|
|
// covers all cases so this statement covers most cases and direct object
|
|
// emission must call setPic() once MCObjectFileInfo has been initialized. The
|
|
// cases we don't handle here are covered by MipsAsmPrinter.
|
|
Pic = MCA.getContext().getObjectFileInfo()->isPositionIndependent();
|
|
|
|
const FeatureBitset &Features = STI.getFeatureBits();
|
|
|
|
// Set the header flags that we can in the constructor.
|
|
// FIXME: This is a fairly terrible hack. We set the rest
|
|
// of these in the destructor. The problem here is two-fold:
|
|
//
|
|
// a: Some of the eflags can be set/reset by directives.
|
|
// b: There aren't any usage paths that initialize the ABI
|
|
// pointer until after we initialize either an assembler
|
|
// or the target machine.
|
|
// We can fix this by making the target streamer construct
|
|
// the ABI, but this is fraught with wide ranging dependency
|
|
// issues as well.
|
|
unsigned EFlags = MCA.getELFHeaderEFlags();
|
|
|
|
// FIXME: Fix a dependency issue by instantiating the ABI object to some
|
|
// default based off the triple. The triple doesn't describe the target
|
|
// fully, but any external user of the API that uses the MCTargetStreamer
|
|
// would otherwise crash on assertion failure.
|
|
|
|
ABI = MipsABIInfo(
|
|
STI.getTargetTriple().getArch() == Triple::ArchType::mipsel ||
|
|
STI.getTargetTriple().getArch() == Triple::ArchType::mips
|
|
? MipsABIInfo::O32()
|
|
: MipsABIInfo::N64());
|
|
|
|
// Architecture
|
|
if (Features[Mips::FeatureMips64r6])
|
|
EFlags |= ELF::EF_MIPS_ARCH_64R6;
|
|
else if (Features[Mips::FeatureMips64r2] ||
|
|
Features[Mips::FeatureMips64r3] ||
|
|
Features[Mips::FeatureMips64r5])
|
|
EFlags |= ELF::EF_MIPS_ARCH_64R2;
|
|
else if (Features[Mips::FeatureMips64])
|
|
EFlags |= ELF::EF_MIPS_ARCH_64;
|
|
else if (Features[Mips::FeatureMips5])
|
|
EFlags |= ELF::EF_MIPS_ARCH_5;
|
|
else if (Features[Mips::FeatureMips4])
|
|
EFlags |= ELF::EF_MIPS_ARCH_4;
|
|
else if (Features[Mips::FeatureMips3])
|
|
EFlags |= ELF::EF_MIPS_ARCH_3;
|
|
else if (Features[Mips::FeatureMips32r6])
|
|
EFlags |= ELF::EF_MIPS_ARCH_32R6;
|
|
else if (Features[Mips::FeatureMips32r2] ||
|
|
Features[Mips::FeatureMips32r3] ||
|
|
Features[Mips::FeatureMips32r5])
|
|
EFlags |= ELF::EF_MIPS_ARCH_32R2;
|
|
else if (Features[Mips::FeatureMips32])
|
|
EFlags |= ELF::EF_MIPS_ARCH_32;
|
|
else if (Features[Mips::FeatureMips2])
|
|
EFlags |= ELF::EF_MIPS_ARCH_2;
|
|
else
|
|
EFlags |= ELF::EF_MIPS_ARCH_1;
|
|
|
|
// Machine
|
|
if (Features[Mips::FeatureCnMips])
|
|
EFlags |= ELF::EF_MIPS_MACH_OCTEON;
|
|
|
|
// Other options.
|
|
if (Features[Mips::FeatureNaN2008])
|
|
EFlags |= ELF::EF_MIPS_NAN2008;
|
|
|
|
MCA.setELFHeaderEFlags(EFlags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitLabel(MCSymbol *S) {
|
|
auto *Symbol = cast<MCSymbolELF>(S);
|
|
getStreamer().getAssembler().registerSymbol(*Symbol);
|
|
uint8_t Type = Symbol->getType();
|
|
if (Type != ELF::STT_FUNC)
|
|
return;
|
|
|
|
if (isMicroMipsEnabled())
|
|
Symbol->setOther(ELF::STO_MIPS_MICROMIPS);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::finish() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
const MCObjectFileInfo &OFI = *MCA.getContext().getObjectFileInfo();
|
|
|
|
// .bss, .text and .data are always at least 16-byte aligned.
|
|
MCSection &TextSection = *OFI.getTextSection();
|
|
MCA.registerSection(TextSection);
|
|
MCSection &DataSection = *OFI.getDataSection();
|
|
MCA.registerSection(DataSection);
|
|
MCSection &BSSSection = *OFI.getBSSSection();
|
|
MCA.registerSection(BSSSection);
|
|
|
|
TextSection.setAlignment(
|
|
llvm::Align(std::max(16u, TextSection.getAlignment())));
|
|
DataSection.setAlignment(
|
|
llvm::Align(std::max(16u, DataSection.getAlignment())));
|
|
BSSSection.setAlignment(
|
|
llvm::Align(std::max(16u, BSSSection.getAlignment())));
|
|
|
|
if (RoundSectionSizes) {
|
|
// Make sections sizes a multiple of the alignment. This is useful for
|
|
// verifying the output of IAS against the output of other assemblers but
|
|
// it's not necessary to produce a correct object and increases section
|
|
// size.
|
|
MCStreamer &OS = getStreamer();
|
|
for (MCSection &S : MCA) {
|
|
MCSectionELF &Section = static_cast<MCSectionELF &>(S);
|
|
|
|
unsigned Alignment = Section.getAlignment();
|
|
if (Alignment) {
|
|
OS.SwitchSection(&Section);
|
|
if (Section.UseCodeAlign())
|
|
OS.EmitCodeAlignment(Alignment, Alignment);
|
|
else
|
|
OS.EmitValueToAlignment(Alignment, 0, 1, Alignment);
|
|
}
|
|
}
|
|
}
|
|
|
|
const FeatureBitset &Features = STI.getFeatureBits();
|
|
|
|
// Update e_header flags. See the FIXME and comment above in
|
|
// the constructor for a full rundown on this.
|
|
unsigned EFlags = MCA.getELFHeaderEFlags();
|
|
|
|
// ABI
|
|
// N64 does not require any ABI bits.
|
|
if (getABI().IsO32())
|
|
EFlags |= ELF::EF_MIPS_ABI_O32;
|
|
else if (getABI().IsN32())
|
|
EFlags |= ELF::EF_MIPS_ABI2;
|
|
|
|
if (Features[Mips::FeatureGP64Bit]) {
|
|
if (getABI().IsO32())
|
|
EFlags |= ELF::EF_MIPS_32BITMODE; /* Compatibility Mode */
|
|
} else if (Features[Mips::FeatureMips64r2] || Features[Mips::FeatureMips64])
|
|
EFlags |= ELF::EF_MIPS_32BITMODE;
|
|
|
|
// -mplt is not implemented but we should act as if it was
|
|
// given.
|
|
if (!Features[Mips::FeatureNoABICalls])
|
|
EFlags |= ELF::EF_MIPS_CPIC;
|
|
|
|
if (Pic)
|
|
EFlags |= ELF::EF_MIPS_PIC | ELF::EF_MIPS_CPIC;
|
|
|
|
MCA.setELFHeaderEFlags(EFlags);
|
|
|
|
// Emit all the option records.
|
|
// At the moment we are only emitting .Mips.options (ODK_REGINFO) and
|
|
// .reginfo.
|
|
MipsELFStreamer &MEF = static_cast<MipsELFStreamer &>(Streamer);
|
|
MEF.EmitMipsOptionRecords();
|
|
|
|
emitMipsAbiFlags();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitAssignment(MCSymbol *S, const MCExpr *Value) {
|
|
auto *Symbol = cast<MCSymbolELF>(S);
|
|
// If on rhs is micromips symbol then mark Symbol as microMips.
|
|
if (Value->getKind() != MCExpr::SymbolRef)
|
|
return;
|
|
const auto &RhsSym = cast<MCSymbolELF>(
|
|
static_cast<const MCSymbolRefExpr *>(Value)->getSymbol());
|
|
|
|
if (!(RhsSym.getOther() & ELF::STO_MIPS_MICROMIPS))
|
|
return;
|
|
|
|
Symbol->setOther(ELF::STO_MIPS_MICROMIPS);
|
|
}
|
|
|
|
MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
|
|
return static_cast<MCELFStreamer &>(Streamer);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
|
|
MicroMipsEnabled = true;
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
|
|
MicroMipsEnabled = false;
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::setUsesMicroMips() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Flags |= ELF::EF_MIPS_MICROMIPS;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveSetMips16() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Flags |= ELF::EF_MIPS_NOREORDER;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
MCContext &Context = MCA.getContext();
|
|
MCStreamer &OS = getStreamer();
|
|
|
|
MCSectionELF *Sec = Context.getELFSection(".pdr", ELF::SHT_PROGBITS, 0);
|
|
|
|
MCSymbol *Sym = Context.getOrCreateSymbol(Name);
|
|
const MCSymbolRefExpr *ExprRef =
|
|
MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, Context);
|
|
|
|
MCA.registerSection(*Sec);
|
|
Sec->setAlignment(llvm::Align(4));
|
|
|
|
OS.PushSection();
|
|
|
|
OS.SwitchSection(Sec);
|
|
|
|
OS.EmitValueImpl(ExprRef, 4);
|
|
|
|
OS.EmitIntValue(GPRInfoSet ? GPRBitMask : 0, 4); // reg_mask
|
|
OS.EmitIntValue(GPRInfoSet ? GPROffset : 0, 4); // reg_offset
|
|
|
|
OS.EmitIntValue(FPRInfoSet ? FPRBitMask : 0, 4); // fpreg_mask
|
|
OS.EmitIntValue(FPRInfoSet ? FPROffset : 0, 4); // fpreg_offset
|
|
|
|
OS.EmitIntValue(FrameInfoSet ? FrameOffset : 0, 4); // frame_offset
|
|
OS.EmitIntValue(FrameInfoSet ? FrameReg : 0, 4); // frame_reg
|
|
OS.EmitIntValue(FrameInfoSet ? ReturnReg : 0, 4); // return_reg
|
|
|
|
// The .end directive marks the end of a procedure. Invalidate
|
|
// the information gathered up until this point.
|
|
GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
|
|
|
|
OS.PopSection();
|
|
|
|
// .end also implicitly sets the size.
|
|
MCSymbol *CurPCSym = Context.createTempSymbol();
|
|
OS.EmitLabel(CurPCSym);
|
|
const MCExpr *Size = MCBinaryExpr::createSub(
|
|
MCSymbolRefExpr::create(CurPCSym, MCSymbolRefExpr::VK_None, Context),
|
|
ExprRef, Context);
|
|
|
|
// The ELFObjectWriter can determine the absolute size as it has access to
|
|
// the layout information of the assembly file, so a size expression rather
|
|
// than an absolute value is ok here.
|
|
static_cast<MCSymbolELF *>(Sym)->setSize(Size);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
|
|
GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
|
|
|
|
// .ent also acts like an implicit '.type symbol, STT_FUNC'
|
|
static_cast<const MCSymbolELF &>(Symbol).setType(ELF::STT_FUNC);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveNaN2008() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Flags |= ELF::EF_MIPS_NAN2008;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveNaNLegacy() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Flags &= ~ELF::EF_MIPS_NAN2008;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
// This option overrides other PIC options like -KPIC.
|
|
Pic = false;
|
|
Flags &= ~ELF::EF_MIPS_PIC;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveOptionPic2() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
unsigned Flags = MCA.getELFHeaderEFlags();
|
|
Pic = true;
|
|
// NOTE: We are following the GAS behaviour here which means the directive
|
|
// 'pic2' also sets the CPIC bit in the ELF header. This is different from
|
|
// what is stated in the SYSV ABI which consider the bits EF_MIPS_PIC and
|
|
// EF_MIPS_CPIC to be mutually exclusive.
|
|
Flags |= ELF::EF_MIPS_PIC | ELF::EF_MIPS_CPIC;
|
|
MCA.setELFHeaderEFlags(Flags);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveInsn() {
|
|
MipsTargetStreamer::emitDirectiveInsn();
|
|
MipsELFStreamer &MEF = static_cast<MipsELFStreamer &>(Streamer);
|
|
MEF.createPendingLabelRelocs();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
|
|
unsigned ReturnReg_) {
|
|
MCContext &Context = getStreamer().getAssembler().getContext();
|
|
const MCRegisterInfo *RegInfo = Context.getRegisterInfo();
|
|
|
|
FrameInfoSet = true;
|
|
FrameReg = RegInfo->getEncodingValue(StackReg);
|
|
FrameOffset = StackSize;
|
|
ReturnReg = RegInfo->getEncodingValue(ReturnReg_);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitMask(unsigned CPUBitmask,
|
|
int CPUTopSavedRegOff) {
|
|
GPRInfoSet = true;
|
|
GPRBitMask = CPUBitmask;
|
|
GPROffset = CPUTopSavedRegOff;
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitFMask(unsigned FPUBitmask,
|
|
int FPUTopSavedRegOff) {
|
|
FPRInfoSet = true;
|
|
FPRBitMask = FPUBitmask;
|
|
FPROffset = FPUTopSavedRegOff;
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveCpLoad(unsigned RegNo) {
|
|
// .cpload $reg
|
|
// This directive expands to:
|
|
// lui $gp, %hi(_gp_disp)
|
|
// addui $gp, $gp, %lo(_gp_disp)
|
|
// addu $gp, $gp, $reg
|
|
// when support for position independent code is enabled.
|
|
if (!Pic || (getABI().IsN32() || getABI().IsN64()))
|
|
return;
|
|
|
|
// There's a GNU extension controlled by -mno-shared that allows
|
|
// locally-binding symbols to be accessed using absolute addresses.
|
|
// This is currently not supported. When supported -mno-shared makes
|
|
// .cpload expand to:
|
|
// lui $gp, %hi(__gnu_local_gp)
|
|
// addiu $gp, $gp, %lo(__gnu_local_gp)
|
|
|
|
StringRef SymName("_gp_disp");
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
MCSymbol *GP_Disp = MCA.getContext().getOrCreateSymbol(SymName);
|
|
MCA.registerSymbol(*GP_Disp);
|
|
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(Mips::LUi);
|
|
TmpInst.addOperand(MCOperand::createReg(GPReg));
|
|
const MCExpr *HiSym = MipsMCExpr::create(
|
|
MipsMCExpr::MEK_HI,
|
|
MCSymbolRefExpr::create("_gp_disp", MCSymbolRefExpr::VK_None,
|
|
MCA.getContext()),
|
|
MCA.getContext());
|
|
TmpInst.addOperand(MCOperand::createExpr(HiSym));
|
|
getStreamer().EmitInstruction(TmpInst, STI);
|
|
|
|
TmpInst.clear();
|
|
|
|
TmpInst.setOpcode(Mips::ADDiu);
|
|
TmpInst.addOperand(MCOperand::createReg(GPReg));
|
|
TmpInst.addOperand(MCOperand::createReg(GPReg));
|
|
const MCExpr *LoSym = MipsMCExpr::create(
|
|
MipsMCExpr::MEK_LO,
|
|
MCSymbolRefExpr::create("_gp_disp", MCSymbolRefExpr::VK_None,
|
|
MCA.getContext()),
|
|
MCA.getContext());
|
|
TmpInst.addOperand(MCOperand::createExpr(LoSym));
|
|
getStreamer().EmitInstruction(TmpInst, STI);
|
|
|
|
TmpInst.clear();
|
|
|
|
TmpInst.setOpcode(Mips::ADDu);
|
|
TmpInst.addOperand(MCOperand::createReg(GPReg));
|
|
TmpInst.addOperand(MCOperand::createReg(GPReg));
|
|
TmpInst.addOperand(MCOperand::createReg(RegNo));
|
|
getStreamer().EmitInstruction(TmpInst, STI);
|
|
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveCpLocal(unsigned RegNo) {
|
|
if (Pic)
|
|
MipsTargetStreamer::emitDirectiveCpLocal(RegNo);
|
|
}
|
|
|
|
bool MipsTargetELFStreamer::emitDirectiveCpRestore(
|
|
int Offset, function_ref<unsigned()> GetATReg, SMLoc IDLoc,
|
|
const MCSubtargetInfo *STI) {
|
|
MipsTargetStreamer::emitDirectiveCpRestore(Offset, GetATReg, IDLoc, STI);
|
|
// .cprestore offset
|
|
// When PIC mode is enabled and the O32 ABI is used, this directive expands
|
|
// to:
|
|
// sw $gp, offset($sp)
|
|
// and adds a corresponding LW after every JAL.
|
|
|
|
// Note that .cprestore is ignored if used with the N32 and N64 ABIs or if it
|
|
// is used in non-PIC mode.
|
|
if (!Pic || (getABI().IsN32() || getABI().IsN64()))
|
|
return true;
|
|
|
|
// Store the $gp on the stack.
|
|
emitStoreWithImmOffset(Mips::SW, GPReg, Mips::SP, Offset, GetATReg, IDLoc,
|
|
STI);
|
|
return true;
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
|
|
int RegOrOffset,
|
|
const MCSymbol &Sym,
|
|
bool IsReg) {
|
|
// Only N32 and N64 emit anything for .cpsetup iff PIC is set.
|
|
if (!Pic || !(getABI().IsN32() || getABI().IsN64()))
|
|
return;
|
|
|
|
forbidModuleDirective();
|
|
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
MCInst Inst;
|
|
|
|
// Either store the old $gp in a register or on the stack
|
|
if (IsReg) {
|
|
// move $save, $gpreg
|
|
emitRRR(Mips::OR64, RegOrOffset, GPReg, Mips::ZERO, SMLoc(), &STI);
|
|
} else {
|
|
// sd $gpreg, offset($sp)
|
|
emitRRI(Mips::SD, GPReg, Mips::SP, RegOrOffset, SMLoc(), &STI);
|
|
}
|
|
|
|
if (getABI().IsN32()) {
|
|
MCSymbol *GPSym = MCA.getContext().getOrCreateSymbol("__gnu_local_gp");
|
|
const MipsMCExpr *HiExpr = MipsMCExpr::create(
|
|
MipsMCExpr::MEK_HI, MCSymbolRefExpr::create(GPSym, MCA.getContext()),
|
|
MCA.getContext());
|
|
const MipsMCExpr *LoExpr = MipsMCExpr::create(
|
|
MipsMCExpr::MEK_LO, MCSymbolRefExpr::create(GPSym, MCA.getContext()),
|
|
MCA.getContext());
|
|
|
|
// lui $gp, %hi(__gnu_local_gp)
|
|
emitRX(Mips::LUi, GPReg, MCOperand::createExpr(HiExpr), SMLoc(), &STI);
|
|
|
|
// addiu $gp, $gp, %lo(__gnu_local_gp)
|
|
emitRRX(Mips::ADDiu, GPReg, GPReg, MCOperand::createExpr(LoExpr), SMLoc(),
|
|
&STI);
|
|
|
|
return;
|
|
}
|
|
|
|
const MipsMCExpr *HiExpr = MipsMCExpr::createGpOff(
|
|
MipsMCExpr::MEK_HI, MCSymbolRefExpr::create(&Sym, MCA.getContext()),
|
|
MCA.getContext());
|
|
const MipsMCExpr *LoExpr = MipsMCExpr::createGpOff(
|
|
MipsMCExpr::MEK_LO, MCSymbolRefExpr::create(&Sym, MCA.getContext()),
|
|
MCA.getContext());
|
|
|
|
// lui $gp, %hi(%neg(%gp_rel(funcSym)))
|
|
emitRX(Mips::LUi, GPReg, MCOperand::createExpr(HiExpr), SMLoc(), &STI);
|
|
|
|
// addiu $gp, $gp, %lo(%neg(%gp_rel(funcSym)))
|
|
emitRRX(Mips::ADDiu, GPReg, GPReg, MCOperand::createExpr(LoExpr), SMLoc(),
|
|
&STI);
|
|
|
|
// daddu $gp, $gp, $funcreg
|
|
emitRRR(Mips::DADDu, GPReg, GPReg, RegNo, SMLoc(), &STI);
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
|
|
bool SaveLocationIsRegister) {
|
|
// Only N32 and N64 emit anything for .cpreturn iff PIC is set.
|
|
if (!Pic || !(getABI().IsN32() || getABI().IsN64()))
|
|
return;
|
|
|
|
MCInst Inst;
|
|
// Either restore the old $gp from a register or on the stack
|
|
if (SaveLocationIsRegister) {
|
|
Inst.setOpcode(Mips::OR);
|
|
Inst.addOperand(MCOperand::createReg(GPReg));
|
|
Inst.addOperand(MCOperand::createReg(SaveLocation));
|
|
Inst.addOperand(MCOperand::createReg(Mips::ZERO));
|
|
} else {
|
|
Inst.setOpcode(Mips::LD);
|
|
Inst.addOperand(MCOperand::createReg(GPReg));
|
|
Inst.addOperand(MCOperand::createReg(Mips::SP));
|
|
Inst.addOperand(MCOperand::createImm(SaveLocation));
|
|
}
|
|
getStreamer().EmitInstruction(Inst, STI);
|
|
|
|
forbidModuleDirective();
|
|
}
|
|
|
|
void MipsTargetELFStreamer::emitMipsAbiFlags() {
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
MCContext &Context = MCA.getContext();
|
|
MCStreamer &OS = getStreamer();
|
|
MCSectionELF *Sec = Context.getELFSection(
|
|
".MIPS.abiflags", ELF::SHT_MIPS_ABIFLAGS, ELF::SHF_ALLOC, 24, "");
|
|
MCA.registerSection(*Sec);
|
|
Sec->setAlignment(llvm::Align(8));
|
|
OS.SwitchSection(Sec);
|
|
|
|
OS << ABIFlagsSection;
|
|
}
|