LXR linux/arch/arm/include/asm/stacktrace.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ASM_STACKTRACE_H
   3#define __ASM_STACKTRACE_H
   4
   5#include <asm/ptrace.h>
   6
   7struct stackframe {
   8        /*
   9         * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled
  10         * and R11 otherwise.
  11         */
  12        unsigned long fp;
  13        unsigned long sp;
  14        unsigned long lr;
  15        unsigned long pc;
  16};
  17
  18static __always_inline
  19void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame)
  20{
  21                frame->fp = frame_pointer(regs);
  22                frame->sp = regs->ARM_sp;
  23                frame->lr = regs->ARM_lr;
  24                frame->pc = regs->ARM_pc;
  25}
  26
  27extern int unwind_frame(struct stackframe *frame);
  28extern void walk_stackframe(struct stackframe *frame,
  29                            int (*fn)(struct stackframe *, void *), void *data);
  30
  31#endif  /* __ASM_STACKTRACE_H */
  32