| Michael Ellerman | aaddd3e | 2008-06-24 11:32:21 +1000 | [diff] [blame] | 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 | |
| Michael Ellerman | e7a5727 | 2008-06-24 11:32:22 +1000 | [diff] [blame] | 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); |
| Michael Ellerman | aaddd3e | 2008-06-24 11:32:21 +1000 | [diff] [blame] | 26 | |
| 27 | #endif /* _ASM_POWERPC_CODE_PATCHING_H */ |