| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1996 Paul Mackerras. |
| 3 | * |
| 4 | * NB this file must be compiled with -O2. |
| 5 | */ |
| 6 | |
| 7 | int |
| 8 | xmon_setjmp(long *buf) |
| 9 | { |
| 10 | asm ("mflr 0; stw 0,0(%0);" |
| 11 | "stw 1,4(%0); stw 2,8(%0);" |
| 12 | "mfcr 0; stw 0,12(%0);" |
| 13 | "stmw 13,16(%0)" |
| 14 | : : "r" (buf)); |
| 15 | /* XXX should save fp regs as well */ |
| 16 | return 0; |
| 17 | } |
| 18 | |
| 19 | void |
| 20 | xmon_longjmp(long *buf, int val) |
| 21 | { |
| 22 | if (val == 0) |
| 23 | val = 1; |
| 24 | asm ("lmw 13,16(%0);" |
| 25 | "lwz 0,12(%0); mtcrf 0x38,0;" |
| 26 | "lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);" |
| 27 | "mtlr 0; mr 3,%1" |
| 28 | : : "r" (buf), "r" (val)); |
| 29 | } |