diff options
Diffstat (limited to 'arch/arm/include/asm/stacktrace.h')
| -rw-r--r-- | arch/arm/include/asm/stacktrace.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h new file mode 100644 index 000000000..2d76a2e29 --- /dev/null +++ b/arch/arm/include/asm/stacktrace.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_STACKTRACE_H +#define __ASM_STACKTRACE_H + +#include <asm/ptrace.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; +}; + +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; +} + +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 */ |