Warning: This file is not a C or C++ file. It does not have highlighting.
| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __ASM_KASAN_H |
| 3 | #define __ASM_KASAN_H |
| 4 | |
| 5 | #if defined(CONFIG_KASAN) && !defined(CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX) |
| 6 | #define _GLOBAL_KASAN(fn) _GLOBAL(__##fn) |
| 7 | #define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(__##fn) |
| 8 | #define EXPORT_SYMBOL_KASAN(fn) EXPORT_SYMBOL(__##fn) |
| 9 | #else |
| 10 | #define _GLOBAL_KASAN(fn) _GLOBAL(fn) |
| 11 | #define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(fn) |
| 12 | #define EXPORT_SYMBOL_KASAN(fn) |
| 13 | #endif |
| 14 | |
| 15 | #ifndef __ASSEMBLER__ |
| 16 | |
| 17 | #include <asm/page.h> |
| 18 | #include <linux/sizes.h> |
| 19 | |
| 20 | #define KASAN_SHADOW_SCALE_SHIFT 3 |
| 21 | |
| 22 | #if defined(CONFIG_EXECMEM) && defined(CONFIG_PPC32) |
| 23 | #define KASAN_KERN_START ALIGN_DOWN(PAGE_OFFSET - SZ_256M, SZ_256M) |
| 24 | #else |
| 25 | #define KASAN_KERN_START PAGE_OFFSET |
| 26 | #endif |
| 27 | |
| 28 | #define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \ |
| 29 | (KASAN_KERN_START >> KASAN_SHADOW_SCALE_SHIFT)) |
| 30 | |
| 31 | #define KASAN_SHADOW_OFFSET ASM_CONST(CONFIG_KASAN_SHADOW_OFFSET) |
| 32 | |
| 33 | #ifdef CONFIG_PPC32 |
| 34 | #define KASAN_SHADOW_END (-(-KASAN_SHADOW_START >> KASAN_SHADOW_SCALE_SHIFT)) |
| 35 | #elif defined(CONFIG_PPC_BOOK3S_64) |
| 36 | /* |
| 37 | * The shadow ends before the highest accessible address |
| 38 | * because we don't need a shadow for the shadow. Instead: |
| 39 | * c00e000000000000 << 3 + a80e000000000000 = c00fc00000000000 |
| 40 | */ |
| 41 | #define KASAN_SHADOW_END 0xc00fc00000000000UL |
| 42 | |
| 43 | #else |
| 44 | |
| 45 | /* |
| 46 | * The shadow ends before the highest accessible address |
| 47 | * because we don't need a shadow for the shadow. |
| 48 | * But it doesn't hurt to have a shadow for the shadow, |
| 49 | * keep shadow end aligned eases things. |
| 50 | */ |
| 51 | #define KASAN_SHADOW_END 0xc000200000000000UL |
| 52 | |
| 53 | #endif |
| 54 | |
| 55 | #ifdef CONFIG_KASAN |
| 56 | |
| 57 | void kasan_early_init(void); |
| 58 | void kasan_mmu_init(void); |
| 59 | void kasan_init(void); |
| 60 | void kasan_late_init(void); |
| 61 | #else |
| 62 | static inline void kasan_init(void) { } |
| 63 | static inline void kasan_mmu_init(void) { } |
| 64 | static inline void kasan_late_init(void) { } |
| 65 | #endif |
| 66 | |
| 67 | void kasan_update_early_region(unsigned long k_start, unsigned long k_end, pte_t pte); |
| 68 | int kasan_init_shadow_page_tables(unsigned long k_start, unsigned long k_end); |
| 69 | int kasan_init_region(void *start, size_t size); |
| 70 | |
| 71 | #endif /* __ASSEMBLER__ */ |
| 72 | #endif |
| 73 |
Warning: This file is not a C or C++ file. It does not have highlighting.