1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SH_STACKPROTECTOR_H
3 #define __ASM_SH_STACKPROTECTOR_H
4 
5 extern unsigned long __stack_chk_guard;
6 
7 /*
8  * Initialize the stackprotector canary value.
9  *
10  * NOTE: this must only be called from functions that never return,
11  * and it must always be inlined.
12  */
13 static __always_inline void boot_init_stack_canary(void)
14 {
15 	unsigned long canary = get_random_canary();
16 
17 	current->stack_canary = canary;
18 	__stack_chk_guard = current->stack_canary;
19 }
20 
21 #endif /* __ASM_SH_STACKPROTECTOR_H */
22