arch/loongarch/kernel/unwind_guess.c

Source file repositories/reference/linux-study-clean/arch/loongarch/kernel/unwind_guess.c

File Facts

System
Linux kernel
Corpus path
arch/loongarch/kernel/unwind_guess.c
Extension
.c
Size
712 bytes
Lines
28
Domain
Architecture Layer
Bucket
arch/loongarch
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2022 Loongson Technology Corporation Limited
 */
#include <asm/unwind.h>
#include <linux/export.h>

unsigned long unwind_get_return_address(struct unwind_state *state)
{
	return __unwind_get_return_address(state);
}
EXPORT_SYMBOL_GPL(unwind_get_return_address);

void unwind_start(struct unwind_state *state, struct task_struct *task,
		    struct pt_regs *regs)
{
	__unwind_start(state, task, regs);
	if (!unwind_done(state) && !__kernel_text_address(state->pc))
		unwind_next_frame(state);
}
EXPORT_SYMBOL_GPL(unwind_start);

bool unwind_next_frame(struct unwind_state *state)
{
	return default_next_frame(state);
}
EXPORT_SYMBOL_GPL(unwind_next_frame);

Annotation

Implementation Notes