arch/arm/include/asm/stacktrace.h

   1 #ifndef __ASM_STACKTRACE_H
   2 #define __ASM_STACKTRACE_H
   3
   4 #include <asm/ptrace.h>
   5
   6 struct 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
  17 static __always_inline
  18 void 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
  26 extern int unwind_frame(struct stackframe *frame);
  27 extern void walk_stackframe(struct stackframe *frame,
  28                             int (*fn)(struct stackframe *, void *), void *data);
  29
  30 #endif  /* __ASM_STACKTRACE_H */