forked from OSchip/llvm-project
177 lines
4.9 KiB
C++
177 lines
4.9 KiB
C++
//===-- SparcInstPrinter.cpp - Convert Sparc MCInst to assembly syntax -----==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class prints an Sparc MCInst to a .s file.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "asm-printer"
|
|
#include "SparcInstPrinter.h"
|
|
#include "Sparc.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
using namespace llvm;
|
|
|
|
// The generated AsmMatcher SparcGenAsmWriter uses "Sparc" as the target
|
|
// namespace. But SPARC backend uses "SP" as its namespace.
|
|
namespace llvm {
|
|
namespace Sparc {
|
|
using namespace SP;
|
|
}
|
|
}
|
|
|
|
#define GET_INSTRUCTION_NAME
|
|
#define PRINT_ALIAS_INSTR
|
|
#include "SparcGenAsmWriter.inc"
|
|
|
|
bool SparcInstPrinter::isV9() const {
|
|
return (STI.getFeatureBits() & Sparc::FeatureV9) != 0;
|
|
}
|
|
|
|
void SparcInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const
|
|
{
|
|
OS << '%' << StringRef(getRegisterName(RegNo)).lower();
|
|
}
|
|
|
|
void SparcInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
|
|
StringRef Annot)
|
|
{
|
|
if (!printAliasInstr(MI, O) && !printSparcAliasInstr(MI, O))
|
|
printInstruction(MI, O);
|
|
printAnnotation(O, Annot);
|
|
}
|
|
|
|
bool SparcInstPrinter::printSparcAliasInstr(const MCInst *MI, raw_ostream &O)
|
|
{
|
|
switch (MI->getOpcode()) {
|
|
default: return false;
|
|
case SP::JMPLrr:
|
|
case SP::JMPLri: {
|
|
if (MI->getNumOperands() != 3)
|
|
return false;
|
|
if (!MI->getOperand(0).isReg())
|
|
return false;
|
|
switch (MI->getOperand(0).getReg()) {
|
|
default: return false;
|
|
case SP::G0: // jmp $addr | ret | retl
|
|
if (MI->getOperand(2).isImm() &&
|
|
MI->getOperand(2).getImm() == 8) {
|
|
switch(MI->getOperand(1).getReg()) {
|
|
default: break;
|
|
case SP::I7: O << "\tret"; return true;
|
|
case SP::O7: O << "\tretl"; return true;
|
|
}
|
|
}
|
|
O << "\tjmp "; printMemOperand(MI, 1, O);
|
|
return true;
|
|
case SP::O7: // call $addr
|
|
O << "\tcall "; printMemOperand(MI, 1, O);
|
|
return true;
|
|
}
|
|
}
|
|
case SP::V9FCMPS: case SP::V9FCMPD: case SP::V9FCMPQ:
|
|
case SP::V9FCMPES: case SP::V9FCMPED: case SP::V9FCMPEQ: {
|
|
if (isV9()
|
|
|| (MI->getNumOperands() != 3)
|
|
|| (!MI->getOperand(0).isReg())
|
|
|| (MI->getOperand(0).getReg() != SP::FCC0))
|
|
return false;
|
|
// if V8, skip printing %fcc0.
|
|
switch(MI->getOpcode()) {
|
|
default:
|
|
case SP::V9FCMPS: O << "\tfcmps "; break;
|
|
case SP::V9FCMPD: O << "\tfcmpd "; break;
|
|
case SP::V9FCMPQ: O << "\tfcmpq "; break;
|
|
case SP::V9FCMPES: O << "\tfcmpes "; break;
|
|
case SP::V9FCMPED: O << "\tfcmped "; break;
|
|
case SP::V9FCMPEQ: O << "\tfcmpeq "; break;
|
|
}
|
|
printOperand(MI, 1, O);
|
|
O << ", ";
|
|
printOperand(MI, 2, O);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void SparcInstPrinter::printOperand(const MCInst *MI, int opNum,
|
|
raw_ostream &O)
|
|
{
|
|
const MCOperand &MO = MI->getOperand (opNum);
|
|
|
|
if (MO.isReg()) {
|
|
printRegName(O, MO.getReg());
|
|
return ;
|
|
}
|
|
|
|
if (MO.isImm()) {
|
|
O << (int)MO.getImm();
|
|
return;
|
|
}
|
|
|
|
assert(MO.isExpr() && "Unknown operand kind in printOperand");
|
|
MO.getExpr()->print(O);
|
|
}
|
|
|
|
void SparcInstPrinter::printMemOperand(const MCInst *MI, int opNum,
|
|
raw_ostream &O, const char *Modifier)
|
|
{
|
|
printOperand(MI, opNum, O);
|
|
|
|
// If this is an ADD operand, emit it like normal operands.
|
|
if (Modifier && !strcmp(Modifier, "arith")) {
|
|
O << ", ";
|
|
printOperand(MI, opNum+1, O);
|
|
return;
|
|
}
|
|
const MCOperand &MO = MI->getOperand(opNum+1);
|
|
|
|
if (MO.isReg() && MO.getReg() == SP::G0)
|
|
return; // don't print "+%g0"
|
|
if (MO.isImm() && MO.getImm() == 0)
|
|
return; // don't print "+0"
|
|
|
|
O << "+";
|
|
|
|
printOperand(MI, opNum+1, O);
|
|
}
|
|
|
|
void SparcInstPrinter::printCCOperand(const MCInst *MI, int opNum,
|
|
raw_ostream &O)
|
|
{
|
|
int CC = (int)MI->getOperand(opNum).getImm();
|
|
switch (MI->getOpcode()) {
|
|
default: break;
|
|
case SP::FBCOND:
|
|
case SP::FBCONDA:
|
|
case SP::BPFCC:
|
|
case SP::BPFCCA:
|
|
case SP::BPFCCNT:
|
|
case SP::BPFCCANT:
|
|
case SP::MOVFCCrr: case SP::V9MOVFCCrr:
|
|
case SP::MOVFCCri: case SP::V9MOVFCCri:
|
|
case SP::FMOVS_FCC: case SP::V9FMOVS_FCC:
|
|
case SP::FMOVD_FCC: case SP::V9FMOVD_FCC:
|
|
case SP::FMOVQ_FCC: case SP::V9FMOVQ_FCC:
|
|
// Make sure CC is a fp conditional flag.
|
|
CC = (CC < 16) ? (CC + 16) : CC;
|
|
break;
|
|
}
|
|
O << SPARCCondCodeToString((SPCC::CondCodes)CC);
|
|
}
|
|
|
|
bool SparcInstPrinter::printGetPCX(const MCInst *MI, unsigned opNum,
|
|
raw_ostream &O)
|
|
{
|
|
assert(0 && "FIXME: Implement SparcInstPrinter::printGetPCX.");
|
|
return true;
|
|
}
|