| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __ASM_STACKTRACE_H |
| #define __ASM_STACKTRACE_H |
| |
| #include <asm/ptrace.h> |
| #include <linux/llist.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; |
| #ifdef CONFIG_KRETPROBES |
| struct llist_node *kr_cur; |
| struct task_struct *tsk; |
| #endif |
| }; |
| |
| 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 |
| } |
| |
| extern int unwind_frame(struct stackframe *frame); |
| extern void walk_stackframe(struct stackframe *frame, |
| int (*fn)(struct stackframe *, void *), void *data); |
| |
| #endif /* __ASM_STACKTRACE_H */ |
