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

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