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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
81 lines
2.6 KiB
C++
81 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/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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using namespace llvm;
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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.EmitIntValue(0x41, 1);
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// Subsection length.
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Streamer.EmitIntValue(22, 4);
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// Vendor name string, zero-terminated.
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Streamer.EmitBytes("mspabi");
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Streamer.EmitIntValue(0, 1);
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// Attribute vector scope tag. 1 stands for the entire file.
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Streamer.EmitIntValue(1, 1);
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// Attribute vector length.
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Streamer.EmitIntValue(11, 4);
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// OFBA_MSPABI_Tag_ISA(4) = 1, MSP430
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Streamer.EmitIntValue(4, 1);
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Streamer.EmitIntValue(1, 1);
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// OFBA_MSPABI_Tag_Code_Model(6) = 1, Small
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Streamer.EmitIntValue(6, 1);
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Streamer.EmitIntValue(1, 1);
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// OFBA_MSPABI_Tag_Data_Model(8) = 1, Small
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Streamer.EmitIntValue(8, 1);
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Streamer.EmitIntValue(1, 1);
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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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