Pileus Git - ~andy/linux/blob - include/asm-powerpc/code-patching.h

   1 #ifndef _ASM_POWERPC_CODE_PATCHING_H
   2 #define _ASM_POWERPC_CODE_PATCHING_H
   3
   4 /*
   5  * Copyright 2008, Michael Ellerman, IBM Corporation.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version
  10  * 2 of the License, or (at your option) any later version.
  11  */
  12
  13 /* Flags for create_branch:
  14  * "b"   == create_branch(addr, target, 0);
  15  * "ba"  == create_branch(addr, target, BRANCH_ABSOLUTE);
  16  * "bl"  == create_branch(addr, target, BRANCH_SET_LINK);
  17  * "bla" == create_branch(addr, target, BRANCH_ABSOLUTE | BRANCH_SET_LINK);
  18  */
  19 #define BRANCH_SET_LINK 0x1
  20 #define BRANCH_ABSOLUTE 0x2
  21
  22 unsigned int create_branch(const unsigned int *addr,
  23                            unsigned long target, int flags);
  24 void patch_branch(unsigned int *addr, unsigned long target, int flags);
  25 void patch_instruction(unsigned int *addr, unsigned int instr);
  26
  27 #endif /* _ASM_POWERPC_CODE_PATCHING_H */