128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
//===-- AVRELFObjectWriter.cpp - AVR ELF Writer ---------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MCTargetDesc/AVRFixupKinds.h"
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#include "MCTargetDesc/AVRMCTargetDesc.h"
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCELFObjectWriter.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/MC/MCValue.h"
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#include "llvm/Support/ErrorHandling.h"
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namespace llvm {
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/// Writes AVR machine code into an ELF32 object file.
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class AVRELFObjectWriter : public MCELFObjectTargetWriter {
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public:
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AVRELFObjectWriter(uint8_t OSABI);
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virtual ~AVRELFObjectWriter() {}
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unsigned getRelocType(MCContext &Ctx,
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const MCValue &Target,
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const MCFixup &Fixup,
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bool IsPCRel) const override;
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};
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AVRELFObjectWriter::AVRELFObjectWriter(uint8_t OSABI)
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: MCELFObjectTargetWriter(false, OSABI, ELF::EM_AVR, true, false) {}
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unsigned AVRELFObjectWriter::getRelocType(MCContext &Ctx,
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const MCValue &Target,
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const MCFixup &Fixup,
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bool IsPCRel) const {
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switch ((unsigned) Fixup.getKind()) {
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case FK_Data_1:
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case FK_Data_4:
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llvm_unreachable("unsupported relocation type");
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case FK_Data_2:
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return ELF::R_AVR_16_PM;
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case AVR::fixup_32:
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return ELF::R_AVR_32;
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case AVR::fixup_7_pcrel:
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return ELF::R_AVR_7_PCREL;
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case AVR::fixup_13_pcrel:
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return ELF::R_AVR_13_PCREL;
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case AVR::fixup_16:
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return ELF::R_AVR_16;
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case AVR::fixup_16_pm:
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return ELF::R_AVR_16_PM;
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case AVR::fixup_lo8_ldi:
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return ELF::R_AVR_LO8_LDI;
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case AVR::fixup_hi8_ldi:
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return ELF::R_AVR_HI8_LDI;
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case AVR::fixup_hh8_ldi:
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return ELF::R_AVR_HH8_LDI;
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case AVR::fixup_lo8_ldi_neg:
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return ELF::R_AVR_LO8_LDI_NEG;
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case AVR::fixup_hi8_ldi_neg:
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return ELF::R_AVR_HI8_LDI_NEG;
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case AVR::fixup_hh8_ldi_neg:
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return ELF::R_AVR_HH8_LDI_NEG;
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case AVR::fixup_lo8_ldi_pm:
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return ELF::R_AVR_LO8_LDI_PM;
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case AVR::fixup_hi8_ldi_pm:
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return ELF::R_AVR_HI8_LDI_PM;
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case AVR::fixup_hh8_ldi_pm:
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return ELF::R_AVR_HH8_LDI_PM;
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case AVR::fixup_lo8_ldi_pm_neg:
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return ELF::R_AVR_LO8_LDI_PM_NEG;
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case AVR::fixup_hi8_ldi_pm_neg:
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return ELF::R_AVR_HI8_LDI_PM_NEG;
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case AVR::fixup_hh8_ldi_pm_neg:
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return ELF::R_AVR_HH8_LDI_PM_NEG;
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case AVR::fixup_call:
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return ELF::R_AVR_CALL;
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case AVR::fixup_ldi:
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return ELF::R_AVR_LDI;
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case AVR::fixup_6:
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return ELF::R_AVR_6;
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case AVR::fixup_6_adiw:
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return ELF::R_AVR_6_ADIW;
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case AVR::fixup_ms8_ldi:
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return ELF::R_AVR_MS8_LDI;
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case AVR::fixup_ms8_ldi_neg:
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return ELF::R_AVR_MS8_LDI_NEG;
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case AVR::fixup_lo8_ldi_gs:
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return ELF::R_AVR_LO8_LDI_GS;
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case AVR::fixup_hi8_ldi_gs:
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return ELF::R_AVR_HI8_LDI_GS;
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case AVR::fixup_8:
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return ELF::R_AVR_8;
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case AVR::fixup_8_lo8:
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return ELF::R_AVR_8_LO8;
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case AVR::fixup_8_hi8:
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return ELF::R_AVR_8_HI8;
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case AVR::fixup_8_hlo8:
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return ELF::R_AVR_8_HLO8;
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case AVR::fixup_sym_diff:
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return ELF::R_AVR_SYM_DIFF;
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case AVR::fixup_16_ldst:
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return ELF::R_AVR_16_LDST;
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case AVR::fixup_lds_sts_16:
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return ELF::R_AVR_LDS_STS_16;
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case AVR::fixup_port6:
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return ELF::R_AVR_PORT6;
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case AVR::fixup_port5:
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return ELF::R_AVR_PORT5;
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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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MCObjectWriter *createAVRELFObjectWriter(raw_pwrite_stream &OS, uint8_t OSABI) {
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MCELFObjectTargetWriter *MOTW = new AVRELFObjectWriter(OSABI);
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return createELFObjectWriter(MOTW, OS, true);
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}
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} // end of namespace llvm
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