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https://github.com/c64scene-ar/llvm-6502.git
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f51e95a9f2
it. It does need some some tests... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147154 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
//===-- PPCELFObjectWriter.cpp - PPC 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/PPCFixupKinds.h"
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#include "MCTargetDesc/PPCMCTargetDesc.h"
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#include "llvm/MC/MCELFObjectWriter.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 PPCELFObjectWriter : public MCELFObjectTargetWriter {
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public:
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PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI);
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virtual ~PPCELFObjectWriter();
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protected:
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virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
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bool IsPCRel, bool IsRelocWithSymbol,
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int64_t Addend) const;
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virtual void adjustFixupOffset(const MCFixup &Fixup, uint64_t &RelocOffset);
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};
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}
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PPCELFObjectWriter::PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI)
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: MCELFObjectTargetWriter(Is64Bit, OSABI,
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Is64Bit ? ELF::EM_PPC64 : ELF::EM_PPC,
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/*HasRelocationAddend*/ true) {}
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PPCELFObjectWriter::~PPCELFObjectWriter() {
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}
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unsigned PPCELFObjectWriter::GetRelocType(const MCValue &Target,
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const MCFixup &Fixup,
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bool IsPCRel,
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bool IsRelocWithSymbol,
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int64_t Addend) const {
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// determine the type of the relocation
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unsigned Type;
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if (IsPCRel) {
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switch ((unsigned)Fixup.getKind()) {
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default:
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llvm_unreachable("Unimplemented");
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case PPC::fixup_ppc_br24:
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Type = ELF::R_PPC_REL24;
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break;
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case FK_PCRel_4:
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Type = ELF::R_PPC_REL32;
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break;
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}
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} else {
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switch ((unsigned)Fixup.getKind()) {
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default: llvm_unreachable("invalid fixup kind!");
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case PPC::fixup_ppc_br24:
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Type = ELF::R_PPC_ADDR24;
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break;
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case PPC::fixup_ppc_brcond14:
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Type = ELF::R_PPC_ADDR14_BRTAKEN; // XXX: or BRNTAKEN?_
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break;
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case PPC::fixup_ppc_ha16:
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Type = ELF::R_PPC_ADDR16_HA;
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break;
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case PPC::fixup_ppc_lo16:
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Type = ELF::R_PPC_ADDR16_LO;
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break;
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case PPC::fixup_ppc_lo14:
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Type = ELF::R_PPC_ADDR14;
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break;
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case FK_Data_4:
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Type = ELF::R_PPC_ADDR32;
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break;
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case FK_Data_2:
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Type = ELF::R_PPC_ADDR16;
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break;
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}
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}
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return Type;
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}
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void PPCELFObjectWriter::
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adjustFixupOffset(const MCFixup &Fixup, uint64_t &RelocOffset) {
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switch ((unsigned)Fixup.getKind()) {
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case PPC::fixup_ppc_ha16:
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case PPC::fixup_ppc_lo16:
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RelocOffset += 2;
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break;
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default:
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break;
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}
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}
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MCObjectWriter *llvm::createPPCELFObjectWriter(raw_ostream &OS,
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bool Is64Bit,
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uint8_t OSABI) {
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MCELFObjectTargetWriter *MOTW = new PPCELFObjectWriter(Is64Bit, OSABI);
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return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/false);
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}
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