diff options
Diffstat (limited to 'arch/arm/include/asm/stacktrace.h')
| -rw-r--r-- | arch/arm/include/asm/stacktrace.h | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h index 4d0a16441b29..ba2f771cca23 100644 --- a/arch/arm/include/asm/stacktrace.h +++ b/arch/arm/include/asm/stacktrace.h @@ -1,15 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_STACKTRACE_H #define __ASM_STACKTRACE_H +#include <linux/llist.h> +#include <asm/ptrace.h> +#include <asm/sections.h> + struct stackframe { + /* + * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled + * and R11 otherwise. + */ unsigned long fp; unsigned long sp; unsigned long lr; unsigned long pc; + + /* address of the LR value on the stack */ + unsigned long *lr_addr; +#ifdef CONFIG_KRETPROBES + struct llist_node *kr_cur; + struct task_struct *tsk; +#endif +#ifdef CONFIG_UNWINDER_FRAME_POINTER + bool ex_frame; +#endif }; +static inline bool on_thread_stack(void) +{ + unsigned long delta = current_stack_pointer ^ (unsigned long)current->stack; + + return delta < THREAD_SIZE; +} + +static __always_inline +void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame) +{ + frame->fp = frame_pointer(regs); + frame->sp = regs->ARM_sp; + frame->lr = regs->ARM_lr; + frame->pc = regs->ARM_pc; +#ifdef CONFIG_KRETPROBES + frame->kr_cur = NULL; + frame->tsk = current; +#endif +#ifdef CONFIG_UNWINDER_FRAME_POINTER + frame->ex_frame = in_entry_text(frame->pc); +#endif +} + extern int unwind_frame(struct stackframe *frame); extern void walk_stackframe(struct stackframe *frame, - int (*fn)(struct stackframe *, void *), void *data); + bool (*fn)(void *, unsigned long), void *data); +extern void dump_mem(const char *lvl, const char *str, unsigned long bottom, + unsigned long top); +extern void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk, + const char *loglvl); #endif /* __ASM_STACKTRACE_H */ |