167 lines
4.5 KiB
C
167 lines
4.5 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_MEMCHR /* inline & arch function */
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#define __HAVE_ARCH_MEMCMP /* arch function */
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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_MEMSCAN /* inline & 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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#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_STRLCPY /* 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_STRRCHR /* 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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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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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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size_t strlcpy(char *dest, const char *src, size_t size);
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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 *strrchr(const char *s, int c);
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char *strstr(const char *s1, const char *s2);
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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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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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static inline void *memchr(const void * s, int c, size_t n)
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{
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register int r0 asm("0") = (char) c;
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const void *ret = s + n;
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asm volatile(
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"0: srst %0,%1\n"
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" jo 0b\n"
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" jl 1f\n"
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" la %0,0\n"
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"1:"
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: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
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return (void *) ret;
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}
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static inline void *memscan(void *s, int c, size_t n)
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{
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register int r0 asm("0") = (char) c;
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const void *ret = s + n;
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asm volatile(
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"0: srst %0,%1\n"
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" jo 0b\n"
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: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
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return (void *) ret;
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}
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static inline char *strcat(char *dst, const char *src)
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{
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register int r0 asm("0") = 0;
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unsigned long dummy;
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char *ret = dst;
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asm volatile(
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"0: srst %0,%1\n"
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" jo 0b\n"
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"1: mvst %0,%2\n"
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" jo 1b"
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: "=&a" (dummy), "+a" (dst), "+a" (src)
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: "d" (r0), "0" (0) : "cc", "memory" );
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return ret;
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}
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static inline char *strcpy(char *dst, const char *src)
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{
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register int r0 asm("0") = 0;
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char *ret = dst;
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asm volatile(
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"0: mvst %0,%1\n"
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" jo 0b"
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: "+&a" (dst), "+&a" (src) : "d" (r0)
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: "cc", "memory");
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return ret;
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}
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static inline size_t strlen(const char *s)
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{
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register unsigned long r0 asm("0") = 0;
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const char *tmp = s;
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asm volatile(
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"0: srst %0,%1\n"
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" jo 0b"
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: "+d" (r0), "+a" (tmp) : : "cc", "memory");
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return r0 - (unsigned long) s;
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}
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static inline size_t strnlen(const char * s, size_t n)
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{
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register int r0 asm("0") = 0;
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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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"0: srst %0,%1\n"
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" jo 0b"
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: "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory");
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return end - s;
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}
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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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