lib/Target/PowerPC/PPCRelocations.h

   1 //===- PPCRelocations.h - PPC32 Code Relocations ----------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines the PowerPC 32-bit target-specific relocation types.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef PPC32RELOCATIONS_H
  15 #define PPC32RELOCATIONS_H
  16
  17 #include "llvm/CodeGen/MachineRelocation.h"
  18
  19 // Hack to rid us of a PPC pre-processor symbol which is erroneously
  20 // defined in a PowerPC header file (bug in Linux/PPC)
  21 #ifdef PPC
  22 #undef PPC
  23 #endif
  24
  25 namespace llvm {
  26   namespace PPC {
  27     enum RelocationType {
  28       // reloc_vanilla - A standard relocation, where the address of the
  29       // relocated object completely overwrites the address of the relocation.
  30       reloc_vanilla,
  31
  32       // reloc_pcrel_bx - PC relative relocation, for the b or bl instructions.
  33       reloc_pcrel_bx,
  34
  35       // reloc_pcrel_bcx - PC relative relocation, for BLT,BLE,BEQ,BGE,BGT,BNE,
  36       // and other bcx instructions.
  37       reloc_pcrel_bcx,
  38
  39       // reloc_absolute_high - Absolute relocation, for the loadhi instruction
  40       // (which is really addis).  Add the high 16-bits of the specified global
  41       // address into the low 16-bits of the instruction.
  42       reloc_absolute_high,
  43
  44       // reloc_absolute_low - Absolute relocation, for the la instruction (which
  45       // is really an addi).  Add the low 16-bits of the specified global
  46       // address into the low 16-bits of the instruction.
  47       reloc_absolute_low,
  48
  49       // reloc_absolute_low_ix - Absolute relocation for the 64-bit load/store
  50       // instruction which have two implicit zero bits.
  51       reloc_absolute_low_ix
  52     };
  53   }
  54 }
  55
  56 #endif