llvm-6502/lib/Target/X86/X86ELFWriterInfo.h
Bruno Cardoso Lopes 0d3193ef3c Add more methods to gather target specific elf stuff
Support for .text relocations, implementing TargetELFWriter overloaded methods for x86/x86_64.
Use a map to track global values to their symbol table indexes
Code cleanup and small fixes



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73894 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-22 19:16:16 +00:00

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//===-- X86ELFWriterInfo.h - ELF Writer Info for X86 ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements ELF writer information for the X86 backend.
//
//===----------------------------------------------------------------------===//
#ifndef X86_ELF_WRITER_INFO_H
#define X86_ELF_WRITER_INFO_H
#include "llvm/Target/TargetELFWriterInfo.h"
namespace llvm {
class X86ELFWriterInfo : public TargetELFWriterInfo {
// ELF Relocation types for X86
enum X86RelocationType {
R_386_NONE = 0,
R_386_32 = 1,
R_386_PC32 = 2
};
// ELF Relocation types for X86_64
enum X86_64RelocationType {
R_X86_64_NONE = 0,
R_X86_64_64 = 1,
R_X86_64_PC32 = 2,
R_X86_64_32 = 10,
R_X86_64_32S = 11,
R_X86_64_PC64 = 24
};
public:
X86ELFWriterInfo(TargetMachine &TM);
virtual ~X86ELFWriterInfo();
/// getFunctionAlignment - Returns the alignment for function 'F', targets
/// with different alignment constraints should overload this method
virtual unsigned getFunctionAlignment(const Function *F) const;
/// getRelocationType - Returns the target specific ELF Relocation type.
/// 'MachineRelTy' contains the object code independent relocation type
virtual unsigned getRelocationType(unsigned MachineRelTy) const;
/// hasRelocationAddend - True if the target uses an addend in the
/// ELF relocation entry.
virtual bool hasRelocationAddend() const { return is64Bit ? true : false; }
/// getAddendForRelTy - Gets the addend value for an ELF relocation entry
/// based on the target relocation type
virtual long int getAddendForRelTy(unsigned RelTy) const;
};
} // end llvm namespace
#endif // X86_ELF_WRITER_INFO_H