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Linux/arch/arm/include/asm/stacktrace.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __ASM_STACKTRACE_H
  3 #define __ASM_STACKTRACE_H
  4 
  5 #include <asm/ptrace.h>
  6 
  7 struct 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 
 18 static __always_inline
 19 void 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 
 27 extern int unwind_frame(struct stackframe *frame);
 28 extern void walk_stackframe(struct stackframe *frame,
 29                             int (*fn)(struct stackframe *, void *), void *data);
 30 
 31 #endif  /* __ASM_STACKTRACE_H */
 32 

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