Contributors: 14
Author Tokens Token Proportion Commits Commit Proportion
Nikolay Borisov 55 21.32% 1 4.35%
Russell King 45 17.44% 4 17.39%
Masami Hiramatsu 35 13.57% 1 4.35%
ruanjinjie 28 10.85% 1 4.35%
Li Huafei 22 8.53% 2 8.70%
Catalin Marinas 19 7.36% 2 8.70%
Linus Torvalds (pre-git) 15 5.81% 4 17.39%
Richard Purdie 10 3.88% 1 4.35%
Ard Biesheuvel 8 3.10% 2 8.70%
Daniel Jacobowitz 6 2.33% 1 4.35%
Dmitry Safonov 5 1.94% 1 4.35%
Linus Torvalds 5 1.94% 1 4.35%
Zhen Lei 4 1.55% 1 4.35%
Greg Kroah-Hartman 1 0.39% 1 4.35%
Total 258 23

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_STACKTRACE_H
#define __ASM_STACKTRACE_H

#include <asm/ptrace.h>
#include <linux/llist.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_inline
void 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 */