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