b524459288
The target independent AsmParser doesn't recognise .hword, .word, .dword which are required for Mips. Currently MipsAsmParser recognises these through dispatch to MipsAsmParser::parseDataDirective. This contains equivalent logic to AsmParser::parseDirectiveValue. This patch allows reuse of AsmParser::parseDirectiveValue by making use of addAliasForDirective to support .hword, .word and .dword. Original patch provided by Alex Bradbury at D47001 was modified to fix handling of microMIPS symbols. The `AsmParser::parseDirectiveValue` calls either `EmitIntValue` or `EmitValue`. In this patch we override `EmitIntValue` in the `MipsELFStreamer` to clear a pending set of microMIPS symbols. Differential revision: https://reviews.llvm.org/D49539 llvm-svn: 337893
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
//===-------- MipsELFStreamer.cpp - ELF Object Output ---------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "MipsELFStreamer.h"
|
|
#include "MipsOptionRecord.h"
|
|
#include "MipsTargetStreamer.h"
|
|
#include "llvm/BinaryFormat/ELF.h"
|
|
#include "llvm/MC/MCAsmBackend.h"
|
|
#include "llvm/MC/MCAssembler.h"
|
|
#include "llvm/MC/MCCodeEmitter.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
#include "llvm/MC/MCSymbolELF.h"
|
|
#include "llvm/Support/Casting.h"
|
|
|
|
using namespace llvm;
|
|
|
|
MipsELFStreamer::MipsELFStreamer(MCContext &Context,
|
|
std::unique_ptr<MCAsmBackend> MAB,
|
|
std::unique_ptr<MCObjectWriter> OW,
|
|
std::unique_ptr<MCCodeEmitter> Emitter)
|
|
: MCELFStreamer(Context, std::move(MAB), std::move(OW),
|
|
std::move(Emitter)) {
|
|
RegInfoRecord = new MipsRegInfoRecord(this, Context);
|
|
MipsOptionRecords.push_back(
|
|
std::unique_ptr<MipsRegInfoRecord>(RegInfoRecord));
|
|
}
|
|
|
|
void MipsELFStreamer::EmitInstruction(const MCInst &Inst,
|
|
const MCSubtargetInfo &STI, bool) {
|
|
MCELFStreamer::EmitInstruction(Inst, STI);
|
|
|
|
MCContext &Context = getContext();
|
|
const MCRegisterInfo *MCRegInfo = Context.getRegisterInfo();
|
|
|
|
for (unsigned OpIndex = 0; OpIndex < Inst.getNumOperands(); ++OpIndex) {
|
|
const MCOperand &Op = Inst.getOperand(OpIndex);
|
|
|
|
if (!Op.isReg())
|
|
continue;
|
|
|
|
unsigned Reg = Op.getReg();
|
|
RegInfoRecord->SetPhysRegUsed(Reg, MCRegInfo);
|
|
}
|
|
|
|
createPendingLabelRelocs();
|
|
}
|
|
|
|
void MipsELFStreamer::createPendingLabelRelocs() {
|
|
MipsTargetELFStreamer *ELFTargetStreamer =
|
|
static_cast<MipsTargetELFStreamer *>(getTargetStreamer());
|
|
|
|
// FIXME: Also mark labels when in MIPS16 mode.
|
|
if (ELFTargetStreamer->isMicroMipsEnabled()) {
|
|
for (auto *L : Labels) {
|
|
auto *Label = cast<MCSymbolELF>(L);
|
|
getAssembler().registerSymbol(*Label);
|
|
Label->setOther(ELF::STO_MIPS_MICROMIPS);
|
|
}
|
|
}
|
|
|
|
Labels.clear();
|
|
}
|
|
|
|
void MipsELFStreamer::EmitLabel(MCSymbol *Symbol, SMLoc Loc) {
|
|
MCELFStreamer::EmitLabel(Symbol);
|
|
Labels.push_back(Symbol);
|
|
}
|
|
|
|
void MipsELFStreamer::SwitchSection(MCSection *Section,
|
|
const MCExpr *Subsection) {
|
|
MCELFStreamer::SwitchSection(Section, Subsection);
|
|
Labels.clear();
|
|
}
|
|
|
|
void MipsELFStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
|
|
SMLoc Loc) {
|
|
MCELFStreamer::EmitValueImpl(Value, Size, Loc);
|
|
Labels.clear();
|
|
}
|
|
|
|
void MipsELFStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
|
|
MCELFStreamer::EmitIntValue(Value, Size);
|
|
Labels.clear();
|
|
}
|
|
|
|
void MipsELFStreamer::EmitMipsOptionRecords() {
|
|
for (const auto &I : MipsOptionRecords)
|
|
I->EmitMipsOptionRecord();
|
|
}
|
|
|
|
MCELFStreamer *llvm::createMipsELFStreamer(
|
|
MCContext &Context, std::unique_ptr<MCAsmBackend> MAB,
|
|
std::unique_ptr<MCObjectWriter> OW, std::unique_ptr<MCCodeEmitter> Emitter,
|
|
bool RelaxAll) {
|
|
return new MipsELFStreamer(Context, std::move(MAB), std::move(OW),
|
|
std::move(Emitter));
|
|
}
|