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 */
20 static __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
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