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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_STACKTRACE_H#define __ASM_STACKTRACE_H
#include <linux/llist.h>#include <asm/ptrace.h>#include <asm/sections.h>
struct stackframe { /* * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled * and R11 otherwise. */ unsigned long fp; unsigned long sp; unsigned long lr; unsigned long pc;
/* address of the LR value on the stack */ unsigned long *lr_addr;#ifdef CONFIG_KRETPROBES struct llist_node *kr_cur; struct task_struct *tsk;#endif#ifdef CONFIG_UNWINDER_FRAME_POINTER bool ex_frame;#endif};
static inline bool on_thread_stack(void){ unsigned long delta = current_stack_pointer ^ (unsigned long)current->stack;
return delta < THREAD_SIZE;}
static __always_inlinevoid arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame){ frame->fp = frame_pointer(regs); frame->sp = regs->ARM_sp; frame->lr = regs->ARM_lr; frame->pc = regs->ARM_pc;#ifdef CONFIG_KRETPROBES frame->kr_cur = NULL; frame->tsk = current;#endif#ifdef CONFIG_UNWINDER_FRAME_POINTER frame->ex_frame = in_entry_text(frame->pc);#endif}
extern int unwind_frame(struct stackframe *frame);extern void walk_stackframe(struct stackframe *frame, bool (*fn)(void *, unsigned long), void *data);extern void dump_mem(const char *lvl, const char *str, unsigned long bottom, unsigned long top);extern void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk, const char *loglvl);
#endif /* __ASM_STACKTRACE_H */