projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 10e26723 DM |
1 | #include <linux/sched.h> |
| 2 | #include <linux/stacktrace.h> | |
| 3 | #include <linux/thread_info.h> | |
| 4 | #include <asm/ptrace.h> | |
| 85a79353 | 5 | #include <asm/stacktrace.h> |
| 10e26723 | 6 | |
| ab1b6f03 | 7 | void save_stack_trace(struct stack_trace *trace) |
| 10e26723 DM |
8 | { |
| 9 | unsigned long ksp, fp, thread_base; | |
| ab1b6f03 | 10 | struct thread_info *tp = task_thread_info(current); |
| 10e26723 | 11 | |
| 85a79353 DM |
12 | stack_trace_flush(); |
| 13 | ||
| ab1b6f03 CH |
14 | __asm__ __volatile__( |
| 15 | "mov %%fp, %0" | |
| 16 | : "=r" (ksp) | |
| 17 | ); | |
| 10e26723 DM |
18 | |
| 19 | fp = ksp + STACK_BIAS; | |
| 20 | thread_base = (unsigned long) tp; | |
| 21 | do { | |
| 22 | struct reg_window *rw; | |
| 77c664fa DM |
23 | struct pt_regs *regs; |
| 24 | unsigned long pc; | |
| 10e26723 DM |
25 | |
| 26 | /* Bogus frame pointer? */ | |
| 27 | if (fp < (thread_base + sizeof(struct thread_info)) || | |
| 28 | fp >= (thread_base + THREAD_SIZE)) | |
| 29 | break; | |
| 30 | ||
| 31 | rw = (struct reg_window *) fp; | |
| 77c664fa DM |
32 | regs = (struct pt_regs *) (rw + 1); |
| 33 | ||
| 34 | if ((regs->magic & ~0x1ff) == PT_REGS_MAGIC) { | |
| 35 | pc = regs->tpc; | |
| 36 | fp = regs->u_regs[UREG_I6] + STACK_BIAS; | |
| 37 | } else { | |
| 38 | pc = rw->ins[7]; | |
| 39 | fp = rw->ins[6] + STACK_BIAS; | |
| 40 | } | |
| 41 | ||
| 10e26723 DM |
42 | if (trace->skip > 0) |
| 43 | trace->skip--; | |
| 44 | else | |
| 77c664fa | 45 | trace->entries[trace->nr_entries++] = pc; |
| 10e26723 DM |
46 | } while (trace->nr_entries < trace->max_entries); |
| 47 | } |