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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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4335edb713
Remove superfluous newlines from inline assemblies. Compilers use the number of lines of inline assemblies as heuristic for the complexity and inline decisions. Therefore inline assemblies should only contain as many lines as required. A lot of inline assemblies contain a superfluous newline for the last line. Remove such newlines to improve compiler inlining decisions. Suggested-by: Juergen Christ <jchrist@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Juergen Christ <jchrist@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
197 lines
5.0 KiB
C
197 lines
5.0 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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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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#if !defined(CONFIG_KASAN) && !defined(CONFIG_KMSAN)
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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_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_STRNLEN /* inline & arch function */
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#define __HAVE_ARCH_STRSTR /* 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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/* 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 *strstr(const char *s1, const char *s2);
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#endif /* !defined(CONFIG_KASAN) && !defined(CONFIG_KMSAN) */
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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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#ifdef __HAVE_ARCH_MEMSET16
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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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#endif
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#ifdef __HAVE_ARCH_MEMSET32
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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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#endif
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#ifdef __HAVE_ARCH_MEMSET64
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#ifdef IN_BOOT_STRING_C
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void *memset64(uint64_t *s, uint64_t v, size_t count);
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#else
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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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#endif
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#endif
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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"
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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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#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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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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