From bf61ad1f870be88676a07bfef69acd59ce10172e Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Thu, 13 Aug 2009 19:49:03 +0900 Subject: sh: Allow multiple stack unwinders to be setup Provide an interface for registering stack unwinders, where each unwinder is given a rating that describes its accuracy and complexity. The more accurate an unwinder is, the more complex it is. If a the current stack unwinder faults, then the stack unwinder with the next highest accuracy will be used in its place (provided one is available). For example, this allows unwinders, such as the DWARF unwinder, to liberally sprinkle BUG()s to catch badly formed DWARF debug info. Signed-off-by: Matt Fleming Signed-off-by: Paul Mundt --- arch/sh/include/asm/unwinder.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 arch/sh/include/asm/unwinder.h (limited to 'arch/sh/include/asm') diff --git a/arch/sh/include/asm/unwinder.h b/arch/sh/include/asm/unwinder.h new file mode 100644 index 00000000000..3dc551453e2 --- /dev/null +++ b/arch/sh/include/asm/unwinder.h @@ -0,0 +1,25 @@ +#ifndef _LINUX_UNWINDER_H +#define _LINUX_UNWINDER_H + +#include + +struct unwinder { + const char *name; + struct list_head list; + int rating; + void (*dump)(struct task_struct *, struct pt_regs *, + unsigned long *, const struct stacktrace_ops *, void *); +}; + +extern int unwinder_init(void); +extern int unwinder_register(struct unwinder *); + +extern void unwind_stack(struct task_struct *, struct pt_regs *, + unsigned long *, const struct stacktrace_ops *, + void *); + +extern void stack_reader_dump(struct task_struct *, struct pt_regs *, + unsigned long *, const struct stacktrace_ops *, + void *); + +#endif /* _LINUX_UNWINDER_H */ -- cgit v1.2.3-70-g09d2