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                                                                                                                                                                                     /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_STACKPROTECTOR_H
#define __ASM_SH_STACKPROTECTOR_H

#include <linux/random.h>
#include <linux/version.h>

extern unsigned long __stack_chk_guard;

/*
 * 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;

	/* Try to get a semi random initial value. */
	get_random_bytes(&canary, sizeof(canary));
	canary ^= LINUX_VERSION_CODE;
	canary &= CANARY_MASK;

	current->stack_canary = canary;
	__stack_chk_guard = current->stack_canary;
}

#endif /* __ASM_SH_STACKPROTECTOR_H */