projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2d7c11bf CM |
2 | #ifndef __ASM_STACKTRACE_H |
| 3 | #define __ASM_STACKTRACE_H | |
| 4 | ||
| fed240d9 | 5 | #include <linux/llist.h> |
| f05995cc AB |
6 | #include <asm/ptrace.h> |
| 7 | #include <asm/sections.h> | |
| 9865f1d4 | 8 | |
| 2d7c11bf | 9 | struct stackframe { |
| 9865f1d4 NB |
10 | /* |
| 11 | * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled | |
| 12 | * and R11 otherwise. | |
| 13 | */ | |
| 2d7c11bf CM |
14 | unsigned long fp; |
| 15 | unsigned long sp; | |
| 16 | unsigned long lr; | |
| 17 | unsigned long pc; | |
| 538b9265 AB |
18 | |
| 19 | /* address of the LR value on the stack */ | |
| 20 | unsigned long *lr_addr; | |
| fed240d9 MH |
21 | #ifdef CONFIG_KRETPROBES |
| 22 | struct llist_node *kr_cur; | |
| 23 | struct task_struct *tsk; | |
| 24 | #endif | |
| 752ec621 LH |
25 | #ifdef CONFIG_UNWINDER_FRAME_POINTER |
| 26 | bool ex_frame; | |
| 27 | #endif | |
| 2d7c11bf CM |
28 | }; |
| 29 | ||
| 2335c9cb JR |
30 | static inline bool on_thread_stack(void) |
| 31 | { | |
| 32 | unsigned long delta = current_stack_pointer ^ (unsigned long)current->stack; | |
| 33 | ||
| 34 | return delta < THREAD_SIZE; | |
| 35 | } | |
| 36 | ||
| 9865f1d4 NB |
37 | static __always_inline |
| 38 | void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame) | |
| 39 | { | |
| 40 | frame->fp = frame_pointer(regs); | |
| 41 | frame->sp = regs->ARM_sp; | |
| 42 | frame->lr = regs->ARM_lr; | |
| 43 | frame->pc = regs->ARM_pc; | |
| fed240d9 MH |
44 | #ifdef CONFIG_KRETPROBES |
| 45 | frame->kr_cur = NULL; | |
| 46 | frame->tsk = current; | |
| 47 | #endif | |
| 752ec621 LH |
48 | #ifdef CONFIG_UNWINDER_FRAME_POINTER |
| 49 | frame->ex_frame = in_entry_text(frame->pc); | |
| 50 | #endif | |
| 9865f1d4 NB |
51 | } |
| 52 | ||
| 2d7c11bf CM |
53 | extern int unwind_frame(struct stackframe *frame); |
| 54 | extern void walk_stackframe(struct stackframe *frame, | |
| 70ccc7c0 | 55 | bool (*fn)(void *, unsigned long), void *data); |
| 8cdfdf7f AB |
56 | extern void dump_mem(const char *lvl, const char *str, unsigned long bottom, |
| 57 | unsigned long top); | |
| 09cffeca ZL |
58 | extern void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk, |
| 59 | const char *loglvl); | |
| 2d7c11bf CM |
60 | |
| 61 | #endif /* __ASM_STACKTRACE_H */ |