diff options
Diffstat (limited to 'arch/powerpc/include/asm/ftrace.h')
| -rw-r--r-- | arch/powerpc/include/asm/ftrace.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h index e5f2ae8362f7..dde1296b8b41 100644 --- a/arch/powerpc/include/asm/ftrace.h +++ b/arch/powerpc/include/asm/ftrace.h | |||
| @@ -5,7 +5,44 @@ | |||
| 5 | #define MCOUNT_ADDR ((long)(_mcount)) | 5 | #define MCOUNT_ADDR ((long)(_mcount)) |
| 6 | #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ | 6 | #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ |
| 7 | 7 | ||
| 8 | #ifndef __ASSEMBLY__ | 8 | #ifdef __ASSEMBLY__ |
| 9 | |||
| 10 | /* Based off of objdump optput from glibc */ | ||
| 11 | |||
| 12 | #define MCOUNT_SAVE_FRAME \ | ||
| 13 | stwu r1,-48(r1); \ | ||
| 14 | stw r3, 12(r1); \ | ||
| 15 | stw r4, 16(r1); \ | ||
| 16 | stw r5, 20(r1); \ | ||
| 17 | stw r6, 24(r1); \ | ||
| 18 | mflr r3; \ | ||
| 19 | lwz r4, 52(r1); \ | ||
| 20 | mfcr r5; \ | ||
| 21 | stw r7, 28(r1); \ | ||
| 22 | stw r8, 32(r1); \ | ||
| 23 | stw r9, 36(r1); \ | ||
| 24 | stw r10,40(r1); \ | ||
| 25 | stw r3, 44(r1); \ | ||
| 26 | stw r5, 8(r1) | ||
| 27 | |||
| 28 | #define MCOUNT_RESTORE_FRAME \ | ||
| 29 | lwz r6, 8(r1); \ | ||
| 30 | lwz r0, 44(r1); \ | ||
| 31 | lwz r3, 12(r1); \ | ||
| 32 | mtctr r0; \ | ||
| 33 | lwz r4, 16(r1); \ | ||
| 34 | mtcr r6; \ | ||
| 35 | lwz r5, 20(r1); \ | ||
| 36 | lwz r6, 24(r1); \ | ||
| 37 | lwz r0, 52(r1); \ | ||
| 38 | lwz r7, 28(r1); \ | ||
| 39 | lwz r8, 32(r1); \ | ||
| 40 | mtlr r0; \ | ||
| 41 | lwz r9, 36(r1); \ | ||
| 42 | lwz r10,40(r1); \ | ||
| 43 | addi r1, r1, 48 | ||
| 44 | |||
| 45 | #else /* !__ASSEMBLY__ */ | ||
| 9 | extern void _mcount(void); | 46 | extern void _mcount(void); |
| 10 | 47 | ||
| 11 | #ifdef CONFIG_DYNAMIC_FTRACE | 48 | #ifdef CONFIG_DYNAMIC_FTRACE |