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| 2 | |
| 3 | * GCC stack protector support.
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| 4 | *
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| 5 |
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| 6 |
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| 7 | #ifndef _ASM_STACKPROTECTOR_H
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| 8 | #define _ASM_STACKPROTECTOR_H
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| 9 |
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| 10 | #include <asm/reg.h>
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| 11 | #include <asm/current.h>
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| 12 | #include <asm/paca.h>
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| 13 |
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| 14 | |
| 15 | * Initialize the stackprotector canary value.
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| 16 | *
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| 17 | * NOTE: this must only be called from functions that never return,
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| 18 | * and it must always be inlined.
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| 19 |
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| 20 | static __always_inline void boot_init_stack_canary(void)
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| 21 | {
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| 22 | unsigned long canary = get_random_canary();
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| 23 |
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| 24 | current->stack_canary = canary;
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| 25 | #ifdef CONFIG_PPC64
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| 26 | get_paca()->canary = canary;
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| 27 | #endif
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| 28 | }
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| 29 |
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| 30 | #endif
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