llvm/lib/Target/X86/X86Relocations.h
Bruno Cardoso Lopes e55fef36a9 1) Proper emit displacements for x86, using absolute relocations where necessary
for ELF to work.  
2) RIP addressing: Use SIB bytes for absolute relocations where RegBase=0, 
IndexReg=0.
3) The JIT can get the real address of cstpools and jmptables during
code emission, fix that for object code emission


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78129 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05 00:11:21 +00:00

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//===- X86Relocations.h - X86 Code Relocations ------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the X86 target-specific relocation types.
//
//===----------------------------------------------------------------------===//
#ifndef X86RELOCATIONS_H
#define X86RELOCATIONS_H
#include "llvm/CodeGen/MachineRelocation.h"
namespace llvm {
namespace X86 {
/// RelocationType - An enum for the x86 relocation codes. Note that
/// the terminology here doesn't follow x86 convention - word means
/// 32-bit and dword means 64-bit. The relocations will be treated
/// by JIT or ObjectCode emitters, this is transparent to the x86 code
/// emitter but JIT and ObjectCode will treat them differently
enum RelocationType {
/// reloc_pcrel_word - PC relative relocation, add the relocated value to
/// the value already in memory, after we adjust it for where the PC is.
reloc_pcrel_word = 0,
/// reloc_picrel_word - PIC base relative relocation, add the relocated
/// value to the value already in memory, after we adjust it for where the
/// PIC base is.
reloc_picrel_word = 1,
/// reloc_absolute_word - absolute relocation, just add the relocated
/// value to the value already in memory.
reloc_absolute_word = 2,
/// reloc_absolute_word_sext - absolute relocation, just add the relocated
/// value to the value already in memory. In object files, it represents a
/// value which must be sign-extended when resolving the relocation.
reloc_absolute_word_sext = 3,
/// reloc_absolute_dword - absolute relocation, just add the relocated
/// value to the value already in memory.
reloc_absolute_dword = 4
};
}
}
#endif