sh: stacktrace/lockdep/irqflags tracing support.

Wire up all of the essentials for lockdep..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index 298d9191909d..34d51b3745ea 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -184,6 +184,11 @@ trap_entry:
         add     r15,r8
         mov.l   r9,@r8
         mov     r9,r8
+#ifdef CONFIG_TRACE_IRQFLAGS
+        mov.l   5f, r9
+        jsr     @r9
+         nop
+#endif
         sti
         bra     system_call
          nop
@@ -193,6 +198,9 @@ trap_entry:
 2:      .long   break_point_trap_software
 3:      .long   NR_syscalls
 4:      .long   sys_call_table
+#ifdef CONFIG_TRACE_IRQFLAGS
+5:      .long   trace_hardirqs_on
+#endif
 
 #if defined(CONFIG_SH_STANDARD_BIOS)
         /* Unwind the stack and jmp to the debug entry */
@@ -255,6 +263,11 @@ ENTRY(address_error_handler)
 
 restore_all:
         cli
+#ifdef CONFIG_TRACE_IRQFLAGS
+        mov.l   3f, r0
+        jsr     @r0
+         nop
+#endif
         mov     r15,r0
         mov.l   $cpu_mode,r2
         mov     #OFF_SR,r3
@@ -307,6 +320,9 @@ $current_thread_info:
         .long   __current_thread_info
 $cpu_mode:      
         .long   __cpu_mode
+#ifdef CONFIG_TRACE_IRQFLAGS
+3:      .long   trace_hardirqs_off
+#endif
                 
 ! common exception handler
 #include "../../entry-common.S"