1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * GCC stack protector support.
4 *
5 */
6
7#ifndef _ASM_STACKPROTECTOR_H
8#define _ASM_STACKPROTECTOR_H
9
10#include <asm/reg.h>
11#include <asm/current.h>
12#include <asm/paca.h>
13
14/*
15 * Initialize the stackprotector canary value.
16 *
17 * NOTE: this must only be called from functions that never return,
18 * and it must always be inlined.
19 */
20static __always_inline void boot_init_stack_canary(void)
21{
22	unsigned long canary = get_random_canary();
23
24	current->stack_canary = canary;
25#ifdef CONFIG_PPC64
26	get_paca()->canary = canary;
27#endif
28}
29
30#endif	/* _ASM_STACKPROTECTOR_H */
31