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https://github.com/c64scene-ar/llvm-6502.git
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0a38dc5fda
are referenced, ignore the relocation entry and patch the relocatable field with the computed symbol offset directly git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76414 91177308-0d34-0410-b5e6-96231b3b80d8
86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
//===-- X86ELFWriterInfo.h - ELF Writer Info for X86 ------------*- C++ -*-===//
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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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//
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// This file implements ELF writer information for the X86 backend.
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//
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//===----------------------------------------------------------------------===//
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#ifndef X86_ELF_WRITER_INFO_H
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#define X86_ELF_WRITER_INFO_H
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#include "llvm/Target/TargetELFWriterInfo.h"
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namespace llvm {
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class X86ELFWriterInfo : public TargetELFWriterInfo {
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// ELF Relocation types for X86
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enum X86RelocationType {
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R_386_NONE = 0,
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R_386_32 = 1,
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R_386_PC32 = 2
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};
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// ELF Relocation types for X86_64
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enum X86_64RelocationType {
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R_X86_64_NONE = 0,
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R_X86_64_64 = 1,
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R_X86_64_PC32 = 2,
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R_X86_64_32 = 10,
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R_X86_64_32S = 11,
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R_X86_64_PC64 = 24
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};
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public:
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X86ELFWriterInfo(TargetMachine &TM);
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virtual ~X86ELFWriterInfo();
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/// getRelocationType - Returns the target specific ELF Relocation type.
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/// 'MachineRelTy' contains the object code independent relocation type
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virtual unsigned getRelocationType(unsigned MachineRelTy) const;
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/// hasRelocationAddend - True if the target uses an addend in the
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/// ELF relocation entry.
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virtual bool hasRelocationAddend() const { return is64Bit ? true : false; }
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/// hasCustomJumpTableIndexRelTy - Returns true if the target has a
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/// specific relocation type for a jump table index.
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virtual bool hasCustomJumpTableIndexRelTy() const {
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return is64Bit ? true : false;
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}
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/// getJumpTableIndexRelTy - Returns the target specific relocation type
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/// for a jump table index.
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virtual unsigned getJumpTableIndexRelTy() const { return R_X86_64_32S; }
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/// getDefaultAddendForRelTy - Gets the default addend value for a
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/// relocation entry based on the target ELF relocation type.
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virtual long int getDefaultAddendForRelTy(unsigned RelTy) const;
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/// getRelTySize - Returns the size of relocatable field in bits
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virtual unsigned getRelocationTySize(unsigned RelTy) const;
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/// isPCRelativeRel - True if the relocation type is pc relative
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virtual bool isPCRelativeRel(unsigned RelTy) const;
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/// getJumpTableRelocationTy - Returns the machine relocation type used
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/// to reference a jumptable.
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virtual unsigned getAbsoluteLabelMachineRelTy() const;
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/// computeRelocation - Some relocatable fields could be relocated
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/// directly, avoiding the relocation symbol emission, compute the
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/// final relocation value for this symbol.
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virtual long int computeRelocation(unsigned SymOffset, unsigned RelOffset,
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unsigned RelTy) const;
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};
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} // end llvm namespace
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#endif // X86_ELF_WRITER_INFO_H
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