sh: FTRACE renamed to FUNCTION_TRACER.

[linux-2.6-omap-h63xx.git] / arch / sh / kernel / entry-common.S

diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index efbb4268875e3a2b1fc43de0789b08b834cf2b3e..5b7efc4016fa549be0cac212fc51e3e5866e9d37 100644 (file)
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -371,3 +371,47 @@ syscall_exit:
 #endif
 7:     .long   do_syscall_trace_enter
 8:     .long   do_syscall_trace_leave
+
+#ifdef CONFIG_FUNCTION_TRACER
+       .align 2
+       .globl  _mcount
+       .type   _mcount,@function
+       .globl  mcount
+       .type   mcount,@function
+_mcount:
+mcount:
+       mov.l   r4, @-r15
+       mov.l   r5, @-r15
+       mov.l   r6, @-r15
+       mov.l   r7, @-r15
+       sts.l   pr, @-r15
+
+       mov.l   @(20,r15),r4
+       sts     pr, r5
+
+       mov.l   1f, r6
+       mov.l   ftrace_stub, r7 
+       cmp/eq  r6, r7
+       bt      skip_trace
+
+       mov.l   @r6, r6
+       jsr     @r6
+        nop
+
+skip_trace:
+
+       lds.l   @r15+, pr
+       mov.l   @r15+, r7
+       mov.l   @r15+, r6
+       mov.l   @r15+, r5
+       rts
+        mov.l  @r15+, r4
+
+       .align 2
+1:     .long   ftrace_trace_function
+
+       .globl  ftrace_stub
+ftrace_stub:
+       rts
+        nop
+#endif /* CONFIG_FUNCTION_TRACER */