blob: 283c346478565c22a6f49c7d3ca2af36cdf10841 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
/*
* GCC stack protector support.
*
*/
#ifndef _ASM_STACKPROTECTOR_H
#define _ASM_STACKPROTECTOR_H
#include <asm/reg.h>
#include <asm/current.h>
#include <asm/paca.h>
/*
* Initialize the stackprotector canary value.
*
* NOTE: this must only be called from functions that never return,
* and it must always be inlined.
*/
static __always_inline void boot_init_stack_canary(void)
{
unsigned long canary = get_random_canary();
current->stack_canary = canary;
#ifdef CONFIG_PPC64
get_paca()->canary = canary;
#endif
}
#endif /* _ASM_STACKPROTECTOR_H */