Merge branch 'linus' into tracing/mmiotrace

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / entry_64.S

diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index c0db5b769e55ee601e0d11e428cb6acc2c90d4bc..2c4d9e056ead302f1f946b42c1f0dc4919c1fa56 100644 (file)
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -870,3 +870,65 @@ _GLOBAL(enter_prom)
        ld      r0,16(r1)
        mtlr    r0
         blr
+
+#ifdef CONFIG_FTRACE
+#ifdef CONFIG_DYNAMIC_FTRACE
+_GLOBAL(mcount)
+_GLOBAL(_mcount)
+       /* Taken from output of objdump from lib64/glibc */
+       mflr    r3
+       stdu    r1, -112(r1)
+       std     r3, 128(r1)
+       .globl mcount_call
+mcount_call:
+       bl      ftrace_stub
+       nop
+       ld      r0, 128(r1)
+       mtlr    r0
+       addi    r1, r1, 112
+       blr
+
+_GLOBAL(ftrace_caller)
+       /* Taken from output of objdump from lib64/glibc */
+       mflr    r3
+       ld      r11, 0(r1)
+       stdu    r1, -112(r1)
+       std     r3, 128(r1)
+       ld      r4, 16(r11)
+.globl ftrace_call
+ftrace_call:
+       bl      ftrace_stub
+       nop
+       ld      r0, 128(r1)
+       mtlr    r0
+       addi    r1, r1, 112
+_GLOBAL(ftrace_stub)
+       blr
+#else
+_GLOBAL(mcount)
+       blr
+
+_GLOBAL(_mcount)
+       /* Taken from output of objdump from lib64/glibc */
+       mflr    r3
+       ld      r11, 0(r1)
+       stdu    r1, -112(r1)
+       std     r3, 128(r1)
+       ld      r4, 16(r11)
+
+
+       LOAD_REG_ADDR(r5,ftrace_trace_function)
+       ld      r5,0(r5)
+       ld      r5,0(r5)
+       mtctr   r5
+       bctrl
+
+       nop
+       ld      r0, 128(r1)
+       mtlr    r0
+       addi    r1, r1, 112
+_GLOBAL(ftrace_stub)
+       blr
+
+#endif
+#endif