96 lines
3.4 KiB
C++
96 lines
3.4 KiB
C++
//===-- LoongArchELFStreamer.cpp - LoongArch ELF Target Streamer Methods --===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file provides LoongArch specific target streamer methods.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "LoongArchELFStreamer.h"
|
|
#include "LoongArchAsmBackend.h"
|
|
#include "llvm/BinaryFormat/ELF.h"
|
|
#include "llvm/MC/MCAssembler.h"
|
|
#include "llvm/MC/MCCodeEmitter.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
|
|
using namespace llvm;
|
|
|
|
// This part is for ELF object output.
|
|
LoongArchTargetELFStreamer::LoongArchTargetELFStreamer(
|
|
MCStreamer &S, const MCSubtargetInfo &STI)
|
|
: LoongArchTargetStreamer(S) {
|
|
// FIXME: select appropriate ABI.
|
|
setTargetABI(STI.getTargetTriple().isArch64Bit() ? LoongArchABI::ABI_LP64D
|
|
: LoongArchABI::ABI_ILP32D);
|
|
}
|
|
|
|
MCELFStreamer &LoongArchTargetELFStreamer::getStreamer() {
|
|
return static_cast<MCELFStreamer &>(Streamer);
|
|
}
|
|
|
|
void LoongArchTargetELFStreamer::finish() {
|
|
LoongArchTargetStreamer::finish();
|
|
MCAssembler &MCA = getStreamer().getAssembler();
|
|
LoongArchABI::ABI ABI = getTargetABI();
|
|
|
|
// FIXME:
|
|
// There are several PRs [1][2][3] that may affect the e_flags.
|
|
// After they got closed or merged, we should update the implementation here
|
|
// accordingly.
|
|
//
|
|
// [1] https://github.com/loongson/LoongArch-Documentation/pull/33
|
|
// [2] https://github.com/loongson/LoongArch-Documentation/pull/47
|
|
// [2] https://github.com/loongson/LoongArch-Documentation/pull/61
|
|
unsigned EFlags = MCA.getELFHeaderEFlags();
|
|
switch (ABI) {
|
|
case LoongArchABI::ABI_ILP32S:
|
|
EFlags |= ELF::EF_LOONGARCH_BASE_ABI_ILP32S;
|
|
break;
|
|
case LoongArchABI::ABI_ILP32F:
|
|
EFlags |= ELF::EF_LOONGARCH_BASE_ABI_ILP32F;
|
|
break;
|
|
case LoongArchABI::ABI_ILP32D:
|
|
EFlags |= ELF::EF_LOONGARCH_BASE_ABI_ILP32D;
|
|
break;
|
|
case LoongArchABI::ABI_LP64S:
|
|
EFlags |= ELF::EF_LOONGARCH_BASE_ABI_LP64S;
|
|
break;
|
|
case LoongArchABI::ABI_LP64F:
|
|
EFlags |= ELF::EF_LOONGARCH_BASE_ABI_LP64F;
|
|
break;
|
|
case LoongArchABI::ABI_LP64D:
|
|
EFlags |= ELF::EF_LOONGARCH_BASE_ABI_LP64D;
|
|
break;
|
|
case LoongArchABI::ABI_Unknown:
|
|
llvm_unreachable("Improperly initialized target ABI");
|
|
}
|
|
MCA.setELFHeaderEFlags(EFlags);
|
|
}
|
|
|
|
namespace {
|
|
class LoongArchELFStreamer : public MCELFStreamer {
|
|
public:
|
|
LoongArchELFStreamer(MCContext &C, std::unique_ptr<MCAsmBackend> MAB,
|
|
std::unique_ptr<MCObjectWriter> MOW,
|
|
std::unique_ptr<MCCodeEmitter> MCE)
|
|
: MCELFStreamer(C, std::move(MAB), std::move(MOW), std::move(MCE)) {}
|
|
};
|
|
} // end namespace
|
|
|
|
namespace llvm {
|
|
MCELFStreamer *createLoongArchELFStreamer(MCContext &C,
|
|
std::unique_ptr<MCAsmBackend> MAB,
|
|
std::unique_ptr<MCObjectWriter> MOW,
|
|
std::unique_ptr<MCCodeEmitter> MCE,
|
|
bool RelaxAll) {
|
|
LoongArchELFStreamer *S = new LoongArchELFStreamer(
|
|
C, std::move(MAB), std::move(MOW), std::move(MCE));
|
|
S->getAssembler().setRelaxAll(RelaxAll);
|
|
return S;
|
|
}
|
|
} // end namespace llvm
|