diff options
Diffstat (limited to 'arch/powerpc/include/asm/string.h')
| -rw-r--r-- | arch/powerpc/include/asm/string.h | 72 |
1 files changed, 66 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/string.h b/arch/powerpc/include/asm/string.h index e40010abcaf1..60ba22770f51 100644 --- a/arch/powerpc/include/asm/string.h +++ b/arch/powerpc/include/asm/string.h @@ -1,19 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_STRING_H #define _ASM_POWERPC_STRING_H #ifdef __KERNEL__ -#define __HAVE_ARCH_STRCPY +#ifndef CONFIG_KASAN #define __HAVE_ARCH_STRNCPY -#define __HAVE_ARCH_STRLEN -#define __HAVE_ARCH_STRCMP #define __HAVE_ARCH_STRNCMP -#define __HAVE_ARCH_STRCAT +#define __HAVE_ARCH_MEMCHR +#define __HAVE_ARCH_MEMCMP +#define __HAVE_ARCH_MEMSET16 +#endif + #define __HAVE_ARCH_MEMSET #define __HAVE_ARCH_MEMCPY #define __HAVE_ARCH_MEMMOVE -#define __HAVE_ARCH_MEMCMP -#define __HAVE_ARCH_MEMCHR +#define __HAVE_ARCH_MEMCPY_FLUSHCACHE extern char * strcpy(char *,const char *); extern char * strncpy(char *,const char *, __kernel_size_t); @@ -26,7 +28,65 @@ extern void * memcpy(void *,const void *,__kernel_size_t); extern void * memmove(void *,const void *,__kernel_size_t); extern int memcmp(const void *,const void *,__kernel_size_t); extern void * memchr(const void *,int,__kernel_size_t); +void memcpy_flushcache(void *dest, const void *src, size_t size); + +#ifdef CONFIG_KASAN +/* __mem variants are used by KASAN to implement instrumented meminstrinsics. */ +#ifdef CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX +#define __memset memset +#define __memcpy memcpy +#define __memmove memmove +#else /* CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX */ +void *__memset(void *s, int c, __kernel_size_t count); +void *__memcpy(void *to, const void *from, __kernel_size_t n); +void *__memmove(void *to, const void *from, __kernel_size_t n); +#ifndef __SANITIZE_ADDRESS__ +/* + * For files that are not instrumented (e.g. mm/slub.c) we + * should use not instrumented version of mem* functions. + */ +#define memcpy(dst, src, len) __memcpy(dst, src, len) +#define memmove(dst, src, len) __memmove(dst, src, len) +#define memset(s, c, n) __memset(s, c, n) + +#ifndef __NO_FORTIFY +#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */ +#endif +#endif /* !__SANITIZE_ADDRESS__ */ +#endif /* CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX */ +#endif /* CONFIG_KASAN */ + +#ifdef CONFIG_PPC64 +#ifndef CONFIG_KASAN +#define __HAVE_ARCH_MEMSET32 +#define __HAVE_ARCH_MEMSET64 + +extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t); +extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t); +extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t); + +static inline void *memset16(uint16_t *p, uint16_t v, __kernel_size_t n) +{ + return __memset16(p, v, n * 2); +} + +static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n) +{ + return __memset32(p, v, n * 4); +} + +static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n) +{ + return __memset64(p, v, n * 8); +} +#endif +#else +#ifndef CONFIG_KASAN +#define __HAVE_ARCH_STRLEN +#endif +extern void *memset16(uint16_t *, uint16_t, __kernel_size_t); +#endif #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_STRING_H */ |