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| 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 |
Warning: This file is not a C or C++ file. It does not have highlighting.