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