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59 lines
2.3 KiB
59 lines
2.3 KiB
4 months ago
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//===-- MSP430ELFObjectWriter.cpp - MSP430 ELF Writer ---------------------===//
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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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#include "MCTargetDesc/MSP430FixupKinds.h"
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#include "MCTargetDesc/MSP430MCTargetDesc.h"
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#include "MCTargetDesc/MSP430MCTargetDesc.h"
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#include "llvm/MC/MCELFObjectWriter.h"
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#include "llvm/MC/MCFixup.h"
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#include "llvm/MC/MCObjectWriter.h"
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#include "llvm/MC/MCValue.h"
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#include "llvm/Support/ErrorHandling.h"
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using namespace llvm;
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namespace {
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class MSP430ELFObjectWriter : public MCELFObjectTargetWriter {
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public:
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MSP430ELFObjectWriter(uint8_t OSABI)
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: MCELFObjectTargetWriter(false, OSABI, ELF::EM_MSP430,
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/*HasRelocationAddend*/ true) {}
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~MSP430ELFObjectWriter() override {}
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protected:
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unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
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const MCFixup &Fixup, bool IsPCRel) const override {
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// Translate fixup kind to ELF relocation type.
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switch (Fixup.getTargetKind()) {
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case FK_Data_1: return ELF::R_MSP430_8;
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case FK_Data_2: return ELF::R_MSP430_16_BYTE;
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case FK_Data_4: return ELF::R_MSP430_32;
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case MSP430::fixup_32: return ELF::R_MSP430_32;
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case MSP430::fixup_10_pcrel: return ELF::R_MSP430_10_PCREL;
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case MSP430::fixup_16: return ELF::R_MSP430_16;
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case MSP430::fixup_16_pcrel: return ELF::R_MSP430_16_PCREL;
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case MSP430::fixup_16_byte: return ELF::R_MSP430_16_BYTE;
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case MSP430::fixup_16_pcrel_byte: return ELF::R_MSP430_16_PCREL_BYTE;
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case MSP430::fixup_2x_pcrel: return ELF::R_MSP430_2X_PCREL;
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case MSP430::fixup_rl_pcrel: return ELF::R_MSP430_RL_PCREL;
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case MSP430::fixup_8: return ELF::R_MSP430_8;
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case MSP430::fixup_sym_diff: return ELF::R_MSP430_SYM_DIFF;
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default:
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llvm_unreachable("Invalid fixup kind");
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}
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}
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};
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} // end of anonymous namespace
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std::unique_ptr<MCObjectTargetWriter>
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llvm::createMSP430ELFObjectWriter(uint8_t OSABI) {
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return std::make_unique<MSP430ELFObjectWriter>(OSABI);
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}
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