ef736a1c39
There's a few relevant forward declarations in there that may require downstream adding explicit includes: llvm/MC/MCContext.h no longer includes llvm/BinaryFormat/ELF.h, llvm/MC/MCSubtargetInfo.h, llvm/MC/MCTargetOptions.h llvm/MC/MCObjectStreamer.h no longer include llvm/MC/MCAssembler.h llvm/MC/MCAssembler.h no longer includes llvm/MC/MCFixup.h, llvm/MC/MCFragment.h Counting preprocessed lines required to rebuild llvm-project on my setup: before: 1052436830 after: 1049293745 Which is significant and backs up the change in addition to the usual benefits of decreasing coupling between headers and compilation units. Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup Differential Revision: https://reviews.llvm.org/D119244
83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
//===-- MSP430ELFStreamer.cpp - MSP430 ELF 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 MSP430 specific target streamer methods.
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//
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//===----------------------------------------------------------------------===//
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#include "MSP430MCTargetDesc.h"
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#include "llvm/BinaryFormat/ELF.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/MCELFStreamer.h"
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#include "llvm/MC/MCSectionELF.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/Support/MSP430Attributes.h"
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using namespace llvm;
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using namespace llvm::MSP430Attrs;
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namespace llvm {
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class MSP430TargetELFStreamer : public MCTargetStreamer {
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public:
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MCELFStreamer &getStreamer();
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MSP430TargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
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};
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// This part is for ELF object output.
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MSP430TargetELFStreamer::MSP430TargetELFStreamer(MCStreamer &S,
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const MCSubtargetInfo &STI)
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: MCTargetStreamer(S) {
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MCAssembler &MCA = getStreamer().getAssembler();
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unsigned EFlags = MCA.getELFHeaderEFlags();
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MCA.setELFHeaderEFlags(EFlags);
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// Emit build attributes section according to
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// MSP430 EABI (slaa534.pdf, part 13).
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MCSection *AttributeSection = getStreamer().getContext().getELFSection(
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".MSP430.attributes", ELF::SHT_MSP430_ATTRIBUTES, 0);
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Streamer.SwitchSection(AttributeSection);
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// Format version.
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Streamer.emitInt8(0x41);
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// Subsection length.
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Streamer.emitInt32(22);
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// Vendor name string, zero-terminated.
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Streamer.emitBytes("mspabi");
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Streamer.emitInt8(0);
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// Attribute vector scope tag. 1 stands for the entire file.
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Streamer.emitInt8(1);
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// Attribute vector length.
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Streamer.emitInt32(11);
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Streamer.emitInt8(TagISA);
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Streamer.emitInt8(STI.hasFeature(MSP430::FeatureX) ? ISAMSP430X : ISAMSP430);
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Streamer.emitInt8(TagCodeModel);
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Streamer.emitInt8(CMSmall);
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Streamer.emitInt8(TagDataModel);
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Streamer.emitInt8(DMSmall);
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// Don't emit TagEnumSize, for full GCC compatibility.
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}
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MCELFStreamer &MSP430TargetELFStreamer::getStreamer() {
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return static_cast<MCELFStreamer &>(Streamer);
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}
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MCTargetStreamer *
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createMSP430ObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
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const Triple &TT = STI.getTargetTriple();
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if (TT.isOSBinFormatELF())
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return new MSP430TargetELFStreamer(S, STI);
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return nullptr;
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}
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} // namespace llvm
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