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-rw-r--r--arch/arm/include/asm/stacktrace.h15
-rw-r--r--arch/arm/include/asm/thread_info.h2
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h
new file mode 100644
index 00000000000..4d0a16441b2
--- /dev/null
+++ b/arch/arm/include/asm/stacktrace.h
@@ -0,0 +1,15 @@
+#ifndef __ASM_STACKTRACE_H
+#define __ASM_STACKTRACE_H
+
+struct stackframe {
+ unsigned long fp;
+ unsigned long sp;
+ unsigned long lr;
+ unsigned long pc;
+};
+
+extern int unwind_frame(struct stackframe *frame);
+extern void walk_stackframe(struct stackframe *frame,
+ int (*fn)(struct stackframe *, void *), void *data);
+
+#endif /* __ASM_STACKTRACE_H */
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index b9dc8a84257..4f8848260ee 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -99,6 +99,8 @@ static inline struct thread_info *current_thread_info(void)
#define thread_saved_pc(tsk) \
((unsigned long)(task_thread_info(tsk)->cpu_context.pc))
+#define thread_saved_sp(tsk) \
+ ((unsigned long)(task_thread_info(tsk)->cpu_context.sp))
#define thread_saved_fp(tsk) \
((unsigned long)(task_thread_info(tsk)->cpu_context.fp))