1 #include <linux/sched.h>
2 #include <linux/stacktrace.h>
3 #include <linux/thread_info.h>
4 #include <asm/ptrace.h>
5 #include <asm/stacktrace.h>
7 void save_stack_trace(struct stack_trace
*trace
)
9 unsigned long ksp
, fp
, thread_base
;
10 struct thread_info
*tp
= task_thread_info(current
);
19 fp
= ksp
+ STACK_BIAS
;
20 thread_base
= (unsigned long) tp
;
22 struct reg_window
*rw
;
26 /* Bogus frame pointer? */
27 if (fp
< (thread_base
+ sizeof(struct thread_info
)) ||
28 fp
>= (thread_base
+ THREAD_SIZE
))
31 rw
= (struct reg_window
*) fp
;
32 regs
= (struct pt_regs
*) (rw
+ 1);
34 if ((regs
->magic
& ~0x1ff) == PT_REGS_MAGIC
) {
36 fp
= regs
->u_regs
[UREG_I6
] + STACK_BIAS
;
39 fp
= rw
->ins
[6] + STACK_BIAS
;
45 trace
->entries
[trace
->nr_entries
++] = pc
;
46 } while (trace
->nr_entries
< trace
->max_entries
);