2946cd7010
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
160 lines
4.7 KiB
C++
160 lines
4.7 KiB
C++
//===-- AVRELFObjectWriter.cpp - AVR 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/AVRFixupKinds.h"
|
|
#include "MCTargetDesc/AVRMCTargetDesc.h"
|
|
|
|
#include "llvm/MC/MCAssembler.h"
|
|
#include "llvm/MC/MCELFObjectWriter.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
#include "llvm/MC/MCSection.h"
|
|
#include "llvm/MC/MCValue.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// Writes AVR machine code into an ELF32 object file.
|
|
class AVRELFObjectWriter : public MCELFObjectTargetWriter {
|
|
public:
|
|
AVRELFObjectWriter(uint8_t OSABI);
|
|
|
|
virtual ~AVRELFObjectWriter() {}
|
|
|
|
unsigned getRelocType(MCContext &Ctx,
|
|
const MCValue &Target,
|
|
const MCFixup &Fixup,
|
|
bool IsPCRel) const override;
|
|
};
|
|
|
|
AVRELFObjectWriter::AVRELFObjectWriter(uint8_t OSABI)
|
|
: MCELFObjectTargetWriter(false, OSABI, ELF::EM_AVR, true) {}
|
|
|
|
unsigned AVRELFObjectWriter::getRelocType(MCContext &Ctx,
|
|
const MCValue &Target,
|
|
const MCFixup &Fixup,
|
|
bool IsPCRel) const {
|
|
MCSymbolRefExpr::VariantKind Modifier = Target.getAccessVariant();
|
|
switch ((unsigned) Fixup.getKind()) {
|
|
case FK_Data_1:
|
|
switch (Modifier) {
|
|
default:
|
|
llvm_unreachable("Unsupported Modifier");
|
|
case MCSymbolRefExpr::VK_None:
|
|
return ELF::R_AVR_8;
|
|
case MCSymbolRefExpr::VK_AVR_DIFF8:
|
|
return ELF::R_AVR_DIFF8;
|
|
case MCSymbolRefExpr::VK_AVR_LO8:
|
|
return ELF::R_AVR_8_LO8;
|
|
case MCSymbolRefExpr::VK_AVR_HI8:
|
|
return ELF::R_AVR_8_HI8;
|
|
case MCSymbolRefExpr::VK_AVR_HLO8:
|
|
return ELF::R_AVR_8_HLO8;
|
|
}
|
|
case FK_Data_4:
|
|
switch (Modifier) {
|
|
default:
|
|
llvm_unreachable("Unsupported Modifier");
|
|
case MCSymbolRefExpr::VK_None:
|
|
return ELF::R_AVR_32;
|
|
case MCSymbolRefExpr::VK_AVR_DIFF32:
|
|
return ELF::R_AVR_DIFF32;
|
|
}
|
|
case FK_Data_2:
|
|
switch (Modifier) {
|
|
default:
|
|
llvm_unreachable("Unsupported Modifier");
|
|
case MCSymbolRefExpr::VK_None:
|
|
return ELF::R_AVR_16;
|
|
case MCSymbolRefExpr::VK_AVR_NONE:
|
|
return ELF::R_AVR_16_PM;
|
|
case MCSymbolRefExpr::VK_AVR_DIFF16:
|
|
return ELF::R_AVR_DIFF16;
|
|
}
|
|
case AVR::fixup_32:
|
|
return ELF::R_AVR_32;
|
|
case AVR::fixup_7_pcrel:
|
|
return ELF::R_AVR_7_PCREL;
|
|
case AVR::fixup_13_pcrel:
|
|
return ELF::R_AVR_13_PCREL;
|
|
case AVR::fixup_16:
|
|
return ELF::R_AVR_16;
|
|
case AVR::fixup_16_pm:
|
|
return ELF::R_AVR_16_PM;
|
|
case AVR::fixup_lo8_ldi:
|
|
return ELF::R_AVR_LO8_LDI;
|
|
case AVR::fixup_hi8_ldi:
|
|
return ELF::R_AVR_HI8_LDI;
|
|
case AVR::fixup_hh8_ldi:
|
|
return ELF::R_AVR_HH8_LDI;
|
|
case AVR::fixup_lo8_ldi_neg:
|
|
return ELF::R_AVR_LO8_LDI_NEG;
|
|
case AVR::fixup_hi8_ldi_neg:
|
|
return ELF::R_AVR_HI8_LDI_NEG;
|
|
case AVR::fixup_hh8_ldi_neg:
|
|
return ELF::R_AVR_HH8_LDI_NEG;
|
|
case AVR::fixup_lo8_ldi_pm:
|
|
return ELF::R_AVR_LO8_LDI_PM;
|
|
case AVR::fixup_hi8_ldi_pm:
|
|
return ELF::R_AVR_HI8_LDI_PM;
|
|
case AVR::fixup_hh8_ldi_pm:
|
|
return ELF::R_AVR_HH8_LDI_PM;
|
|
case AVR::fixup_lo8_ldi_pm_neg:
|
|
return ELF::R_AVR_LO8_LDI_PM_NEG;
|
|
case AVR::fixup_hi8_ldi_pm_neg:
|
|
return ELF::R_AVR_HI8_LDI_PM_NEG;
|
|
case AVR::fixup_hh8_ldi_pm_neg:
|
|
return ELF::R_AVR_HH8_LDI_PM_NEG;
|
|
case AVR::fixup_call:
|
|
return ELF::R_AVR_CALL;
|
|
case AVR::fixup_ldi:
|
|
return ELF::R_AVR_LDI;
|
|
case AVR::fixup_6:
|
|
return ELF::R_AVR_6;
|
|
case AVR::fixup_6_adiw:
|
|
return ELF::R_AVR_6_ADIW;
|
|
case AVR::fixup_ms8_ldi:
|
|
return ELF::R_AVR_MS8_LDI;
|
|
case AVR::fixup_ms8_ldi_neg:
|
|
return ELF::R_AVR_MS8_LDI_NEG;
|
|
case AVR::fixup_lo8_ldi_gs:
|
|
return ELF::R_AVR_LO8_LDI_GS;
|
|
case AVR::fixup_hi8_ldi_gs:
|
|
return ELF::R_AVR_HI8_LDI_GS;
|
|
case AVR::fixup_8:
|
|
return ELF::R_AVR_8;
|
|
case AVR::fixup_8_lo8:
|
|
return ELF::R_AVR_8_LO8;
|
|
case AVR::fixup_8_hi8:
|
|
return ELF::R_AVR_8_HI8;
|
|
case AVR::fixup_8_hlo8:
|
|
return ELF::R_AVR_8_HLO8;
|
|
case AVR::fixup_diff8:
|
|
return ELF::R_AVR_DIFF8;
|
|
case AVR::fixup_diff16:
|
|
return ELF::R_AVR_DIFF16;
|
|
case AVR::fixup_diff32:
|
|
return ELF::R_AVR_DIFF32;
|
|
case AVR::fixup_lds_sts_16:
|
|
return ELF::R_AVR_LDS_STS_16;
|
|
case AVR::fixup_port6:
|
|
return ELF::R_AVR_PORT6;
|
|
case AVR::fixup_port5:
|
|
return ELF::R_AVR_PORT5;
|
|
default:
|
|
llvm_unreachable("invalid fixup kind!");
|
|
}
|
|
}
|
|
|
|
std::unique_ptr<MCObjectTargetWriter> createAVRELFObjectWriter(uint8_t OSABI) {
|
|
return make_unique<AVRELFObjectWriter>(OSABI);
|
|
}
|
|
|
|
} // end of namespace llvm
|
|
|