arch/csky/include/asm/stackprotector.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_STACKPROTECTOR_H
   3 #define _ASM_STACKPROTECTOR_H 1
   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 */