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Commit | Line | Data |
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10e26723 DM |
1 | #include <linux/sched.h> |
2 | #include <linux/stacktrace.h> | |
3 | #include <linux/thread_info.h> | |
4 | #include <asm/ptrace.h> | |
5 | ||
ab1b6f03 | 6 | void save_stack_trace(struct stack_trace *trace) |
10e26723 DM |
7 | { |
8 | unsigned long ksp, fp, thread_base; | |
ab1b6f03 | 9 | struct thread_info *tp = task_thread_info(current); |
10e26723 | 10 | |
ab1b6f03 CH |
11 | flushw_all(); |
12 | __asm__ __volatile__( | |
13 | "mov %%fp, %0" | |
14 | : "=r" (ksp) | |
15 | ); | |
10e26723 DM |
16 | |
17 | fp = ksp + STACK_BIAS; | |
18 | thread_base = (unsigned long) tp; | |
19 | do { | |
20 | struct reg_window *rw; | |
21 | ||
22 | /* Bogus frame pointer? */ | |
23 | if (fp < (thread_base + sizeof(struct thread_info)) || | |
24 | fp >= (thread_base + THREAD_SIZE)) | |
25 | break; | |
26 | ||
27 | rw = (struct reg_window *) fp; | |
28 | if (trace->skip > 0) | |
29 | trace->skip--; | |
30 | else | |
31 | trace->entries[trace->nr_entries++] = rw->ins[7]; | |
32 | ||
33 | fp = rw->ins[6] + STACK_BIAS; | |
34 | } while (trace->nr_entries < trace->max_entries); | |
35 | } |