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