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> | |
| a05fe038 | 4 | #include <linux/module.h> |
| 10e26723 | 5 | #include <asm/ptrace.h> |
| 85a79353 | 6 | #include <asm/stacktrace.h> |
| 10e26723 | 7 | |
| 4f70f7a9 DM |
8 | #include "kstack.h" |
| 9 | ||
| ab1b6f03 | 10 | void save_stack_trace(struct stack_trace *trace) |
| 10e26723 | 11 | { |
| ab1b6f03 | 12 | struct thread_info *tp = task_thread_info(current); |
| 6f63e781 | 13 | unsigned long ksp, fp; |
| 10e26723 | 14 | |
| 85a79353 DM |
15 | stack_trace_flush(); |
| 16 | ||
| ab1b6f03 CH |
17 | __asm__ __volatile__( |
| 18 | "mov %%fp, %0" | |
| 19 | : "=r" (ksp) | |
| 20 | ); | |
| 10e26723 DM |
21 | |
| 22 | fp = ksp + STACK_BIAS; | |
| 10e26723 | 23 | do { |
| 14d2c68b | 24 | struct sparc_stackf *sf; |
| 77c664fa DM |
25 | struct pt_regs *regs; |
| 26 | unsigned long pc; | |
| 10e26723 | 27 | |
| 4f70f7a9 | 28 | if (!kstack_valid(tp, fp)) |
| 10e26723 DM |
29 | break; |
| 30 | ||
| 14d2c68b DM |
31 | sf = (struct sparc_stackf *) fp; |
| 32 | regs = (struct pt_regs *) (sf + 1); | |
| 77c664fa | 33 | |
| 4f70f7a9 | 34 | if (kstack_is_trap_frame(tp, regs)) { |
| 14d2c68b DM |
35 | if (!(regs->tstate & TSTATE_PRIV)) |
| 36 | break; | |
| 77c664fa DM |
37 | pc = regs->tpc; |
| 38 | fp = regs->u_regs[UREG_I6] + STACK_BIAS; | |
| 39 | } else { | |
| 14d2c68b DM |
40 | pc = sf->callers_pc; |
| 41 | fp = (unsigned long)sf->fp + STACK_BIAS; | |
| 77c664fa DM |
42 | } |
| 43 | ||
| 10e26723 DM |
44 | if (trace->skip > 0) |
| 45 | trace->skip--; | |
| 46 | else | |
| 77c664fa | 47 | trace->entries[trace->nr_entries++] = pc; |
| 10e26723 DM |
48 | } while (trace->nr_entries < trace->max_entries); |
| 49 | } | |
| 7b4c9505 | 50 | EXPORT_SYMBOL_GPL(save_stack_trace); |