git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 878719e8 NH |
1 | /* |
| 2 | * Copyright (C) 1991, 1992 Linus Torvalds | |
| 3 | * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs | |
| 4 | */ | |
| 5 | ||
| 6 | #ifndef DUMPSTACK_H | |
| 7 | #define DUMPSTACK_H | |
| 8 | ||
| 9 | #ifdef CONFIG_X86_32 | |
| 10 | #define STACKSLOTS_PER_LINE 8 | |
| 11 | #define get_bp(bp) asm("movl %%ebp, %0" : "=r" (bp) :) | |
| 12 | #else | |
| 13 | #define STACKSLOTS_PER_LINE 4 | |
| 14 | #define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :) | |
| 15 | #endif | |
| 16 | ||
| ab285f2b FW |
17 | #include <linux/uaccess.h> |
| 18 | ||
| 878719e8 NH |
19 | extern void |
| 20 | show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, | |
| 21 | unsigned long *stack, unsigned long bp, char *log_lvl); | |
| 22 | ||
| 23 | extern void | |
| 24 | show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs, | |
| 25 | unsigned long *sp, unsigned long bp, char *log_lvl); | |
| 26 | ||
| 27 | extern unsigned int code_bytes; | |
| 878719e8 NH |
28 | |
| 29 | /* The form of the top of the frame on the stack */ | |
| 30 | struct stack_frame { | |
| 31 | struct stack_frame *next_frame; | |
| 32 | unsigned long return_address; | |
| 33 | }; | |
| 5331d7b8 | 34 | |
| 257ef9d2 TE |
35 | struct stack_frame_ia32 { |
| 36 | u32 next_frame; | |
| 37 | u32 return_address; | |
| 38 | }; | |
| 39 | ||
| 5331d7b8 FW |
40 | static inline unsigned long rewind_frame_pointer(int n) |
| 41 | { | |
| 42 | struct stack_frame *frame; | |
| 43 | ||
| 44 | get_bp(frame); | |
| 45 | ||
| 46 | #ifdef CONFIG_FRAME_POINTER | |
| ab285f2b FW |
47 | while (n--) { |
| 48 | if (probe_kernel_address(&frame->next_frame, frame)) | |
| 49 | break; | |
| 50 | } | |
| 878719e8 | 51 | #endif |
| 5331d7b8 FW |
52 | |
| 53 | return (unsigned long)frame; | |
| 54 | } | |
| 55 | ||
| 56 | #endif /* DUMPSTACK_H */ |