diff options
Diffstat (limited to 'arch/powerpc/kernel/entry_32.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 68 |
1 files changed, 9 insertions, 59 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 301c646d1a7d..fd54cb59728e 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -1176,59 +1176,22 @@ _GLOBAL(_mcount) bctr _GLOBAL(ftrace_caller) - /* Based off of objdump optput from glibc */ - stwu r1,-48(r1) - stw r3, 12(r1) - stw r4, 16(r1) - stw r5, 20(r1) - stw r6, 24(r1) - mflr r3 - lwz r4, 52(r1) - mfcr r5 - stw r7, 28(r1) - stw r8, 32(r1) - stw r9, 36(r1) - stw r10,40(r1) - stw r3, 44(r1) - stw r5, 8(r1) + MCOUNT_SAVE_FRAME + /* r3 ends up with link register */ subi r3, r3, MCOUNT_INSN_SIZE .globl ftrace_call ftrace_call: bl ftrace_stub nop - lwz r6, 8(r1) - lwz r0, 44(r1) - lwz r3, 12(r1) - mtctr r0 - lwz r4, 16(r1) - mtcr r6 - lwz r5, 20(r1) - lwz r6, 24(r1) - lwz r0, 52(r1) - lwz r7, 28(r1) - lwz r8, 32(r1) - mtlr r0 - lwz r9, 36(r1) - lwz r10,40(r1) - addi r1, r1, 48 + + MCOUNT_RESTORE_FRAME + /* old link register ends up in ctr reg */ bctr #else _GLOBAL(mcount) _GLOBAL(_mcount) - stwu r1,-48(r1) - stw r3, 12(r1) - stw r4, 16(r1) - stw r5, 20(r1) - stw r6, 24(r1) - mflr r3 - lwz r4, 52(r1) - mfcr r5 - stw r7, 28(r1) - stw r8, 32(r1) - stw r9, 36(r1) - stw r10,40(r1) - stw r3, 44(r1) - stw r5, 8(r1) + + MCOUNT_SAVE_FRAME subi r3, r3, MCOUNT_INSN_SIZE LOAD_REG_ADDR(r5, ftrace_trace_function) @@ -1239,21 +1202,8 @@ _GLOBAL(_mcount) nop - lwz r6, 8(r1) - lwz r0, 44(r1) - lwz r3, 12(r1) - mtctr r0 - lwz r4, 16(r1) - mtcr r6 - lwz r5, 20(r1) - lwz r6, 24(r1) - lwz r0, 52(r1) - lwz r7, 28(r1) - lwz r8, 32(r1) - mtlr r0 - lwz r9, 36(r1) - lwz r10,40(r1) - addi r1, r1, 48 + MCOUNT_RESTORE_FRAME + bctr #endif |