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e48b6853d8
The kasan mem*() functions are not used anymore since s390 has switched
to GENERIC_ENTRY and commit 69d4c0d321 ("entry, kasan, x86: Disallow
overriding mem*() functions").
Therefore remove the now dead code, similar to x86.
While at it also use the SYM* macros in mem.S.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
207 lines
5.2 KiB
C
207 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* S390 version
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* Copyright IBM Corp. 1999
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
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*/
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#ifndef _S390_STRING_H_
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#define _S390_STRING_H_
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#ifndef _LINUX_TYPES_H
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#include <linux/types.h>
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#endif
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#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
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#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
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#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
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#define __HAVE_ARCH_MEMSET16 /* arch function */
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#define __HAVE_ARCH_MEMSET32 /* arch function */
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#define __HAVE_ARCH_MEMSET64 /* arch function */
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void *memcpy(void *dest, const void *src, size_t n);
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void *memset(void *s, int c, size_t n);
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void *memmove(void *dest, const void *src, size_t n);
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#ifndef CONFIG_KASAN
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#define __HAVE_ARCH_MEMCHR /* inline & arch function */
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#define __HAVE_ARCH_MEMCMP /* arch function */
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#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
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#define __HAVE_ARCH_STRCAT /* inline & arch function */
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#define __HAVE_ARCH_STRCMP /* arch function */
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#define __HAVE_ARCH_STRCPY /* inline & arch function */
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#define __HAVE_ARCH_STRLCAT /* arch function */
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#define __HAVE_ARCH_STRLEN /* inline & arch function */
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#define __HAVE_ARCH_STRNCAT /* arch function */
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#define __HAVE_ARCH_STRNCPY /* arch function */
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#define __HAVE_ARCH_STRNLEN /* inline & arch function */
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#define __HAVE_ARCH_STRSTR /* arch function */
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/* Prototypes for non-inlined arch strings functions. */
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int memcmp(const void *s1, const void *s2, size_t n);
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int strcmp(const char *s1, const char *s2);
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size_t strlcat(char *dest, const char *src, size_t n);
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char *strncat(char *dest, const char *src, size_t n);
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char *strncpy(char *dest, const char *src, size_t n);
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char *strstr(const char *s1, const char *s2);
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#endif /* !CONFIG_KASAN */
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#undef __HAVE_ARCH_STRCHR
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#undef __HAVE_ARCH_STRNCHR
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#undef __HAVE_ARCH_STRNCMP
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#undef __HAVE_ARCH_STRPBRK
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#undef __HAVE_ARCH_STRSEP
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#undef __HAVE_ARCH_STRSPN
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#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
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#define strlen(s) __strlen(s)
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#define __no_sanitize_prefix_strfunc(x) __##x
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#ifndef __NO_FORTIFY
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#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
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#endif
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#else
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#define __no_sanitize_prefix_strfunc(x) x
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#endif /* defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) */
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void *__memcpy(void *dest, const void *src, size_t n);
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void *__memset(void *s, int c, size_t n);
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void *__memmove(void *dest, const void *src, size_t n);
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void *__memset16(uint16_t *s, uint16_t v, size_t count);
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void *__memset32(uint32_t *s, uint32_t v, size_t count);
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void *__memset64(uint64_t *s, uint64_t v, size_t count);
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static inline void *memset16(uint16_t *s, uint16_t v, size_t count)
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{
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return __memset16(s, v, count * sizeof(v));
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}
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static inline void *memset32(uint32_t *s, uint32_t v, size_t count)
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{
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return __memset32(s, v, count * sizeof(v));
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}
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static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
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{
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return __memset64(s, v, count * sizeof(v));
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}
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#if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY))
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#ifdef __HAVE_ARCH_MEMCHR
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static inline void *memchr(const void * s, int c, size_t n)
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{
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const void *ret = s + n;
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asm volatile(
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" lgr 0,%[c]\n"
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"0: srst %[ret],%[s]\n"
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" jo 0b\n"
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" jl 1f\n"
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" la %[ret],0\n"
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"1:"
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: [ret] "+&a" (ret), [s] "+&a" (s)
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: [c] "d" (c)
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: "cc", "memory", "0");
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return (void *) ret;
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}
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#endif
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#ifdef __HAVE_ARCH_MEMSCAN
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static inline void *memscan(void *s, int c, size_t n)
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{
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const void *ret = s + n;
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asm volatile(
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" lgr 0,%[c]\n"
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"0: srst %[ret],%[s]\n"
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" jo 0b\n"
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: [ret] "+&a" (ret), [s] "+&a" (s)
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: [c] "d" (c)
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: "cc", "memory", "0");
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return (void *) ret;
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}
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#endif
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#ifdef __HAVE_ARCH_STRCAT
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static inline char *strcat(char *dst, const char *src)
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{
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unsigned long dummy = 0;
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char *ret = dst;
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asm volatile(
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" lghi 0,0\n"
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"0: srst %[dummy],%[dst]\n"
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" jo 0b\n"
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"1: mvst %[dummy],%[src]\n"
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" jo 1b"
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: [dummy] "+&a" (dummy), [dst] "+&a" (dst), [src] "+&a" (src)
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:
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: "cc", "memory", "0");
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return ret;
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}
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#endif
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#ifdef __HAVE_ARCH_STRCPY
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static inline char *strcpy(char *dst, const char *src)
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{
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char *ret = dst;
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asm volatile(
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" lghi 0,0\n"
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"0: mvst %[dst],%[src]\n"
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" jo 0b"
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: [dst] "+&a" (dst), [src] "+&a" (src)
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:
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: "cc", "memory", "0");
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return ret;
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}
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#endif
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#if defined(__HAVE_ARCH_STRLEN) || (defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__))
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static inline size_t __no_sanitize_prefix_strfunc(strlen)(const char *s)
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{
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unsigned long end = 0;
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const char *tmp = s;
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asm volatile(
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" lghi 0,0\n"
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"0: srst %[end],%[tmp]\n"
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" jo 0b"
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: [end] "+&a" (end), [tmp] "+&a" (tmp)
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:
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: "cc", "memory", "0");
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return end - (unsigned long)s;
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}
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#endif
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#ifdef __HAVE_ARCH_STRNLEN
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static inline size_t strnlen(const char * s, size_t n)
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{
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const char *tmp = s;
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const char *end = s + n;
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asm volatile(
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" lghi 0,0\n"
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"0: srst %[end],%[tmp]\n"
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" jo 0b"
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: [end] "+&a" (end), [tmp] "+&a" (tmp)
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:
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: "cc", "memory", "0");
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return end - s;
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}
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#endif
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#else /* IN_ARCH_STRING_C */
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void *memchr(const void * s, int c, size_t n);
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void *memscan(void *s, int c, size_t n);
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char *strcat(char *dst, const char *src);
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char *strcpy(char *dst, const char *src);
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size_t strlen(const char *s);
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size_t strnlen(const char * s, size_t n);
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#endif /* !IN_ARCH_STRING_C */
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#endif /* __S390_STRING_H_ */
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