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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113/* * include/asm-xtensa/string.h * * These trivial string functions are considered part of the public domain. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2001 - 2005 Tensilica Inc. */
/* We should optimize these. See arch/xtensa/lib/strncpy_user.S */
#ifndef _XTENSA_STRING_H#define _XTENSA_STRING_H
#define __HAVE_ARCH_STRCPYstatic inline char *strcpy(char *__dest, const char *__src){ register char *__xdest = __dest; unsigned long __dummy;
__asm__ __volatile__("1:\n\t" "l8ui %2, %1, 0\n\t" "s8i %2, %0, 0\n\t" "addi %1, %1, 1\n\t" "addi %0, %0, 1\n\t" "bnez %2, 1b\n\t" : "=r" (__dest), "=r" (__src), "=&r" (__dummy) : "0" (__dest), "1" (__src) : "memory");
return __xdest;}
#define __HAVE_ARCH_STRCMPstatic inline int strcmp(const char *__cs, const char *__ct){ register int __res; unsigned long __dummy;
__asm__ __volatile__( "1:\n\t" "l8ui %3, %1, 0\n\t" "addi %1, %1, 1\n\t" "l8ui %2, %0, 0\n\t" "addi %0, %0, 1\n\t" "beqz %2, 2f\n\t" "beq %2, %3, 1b\n" "2:\n\t" "sub %2, %2, %3" : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy) : "0" (__cs), "1" (__ct));
return __res;}
#define __HAVE_ARCH_STRNCMPstatic inline int strncmp(const char *__cs, const char *__ct, size_t __n){ register int __res; unsigned long __dummy;
__asm__ __volatile__( "mov %2, %3\n" "1:\n\t" "beq %0, %6, 2f\n\t" "l8ui %3, %1, 0\n\t" "addi %1, %1, 1\n\t" "l8ui %2, %0, 0\n\t" "addi %0, %0, 1\n\t" "beqz %2, 2f\n\t" "beqz %3, 2f\n\t" "beq %2, %3, 1b\n" "2:\n\t" "sub %2, %2, %3" : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy) : "0" (__cs), "1" (__ct), "r" ((uintptr_t)__cs+__n));
return __res;}
#define __HAVE_ARCH_MEMSETextern void *memset(void *__s, int __c, size_t __count);extern void *__memset(void *__s, int __c, size_t __count);
#define __HAVE_ARCH_MEMCPYextern void *memcpy(void *__to, __const__ void *__from, size_t __n);extern void *__memcpy(void *__to, __const__ void *__from, size_t __n);
#define __HAVE_ARCH_MEMMOVEextern void *memmove(void *__dest, __const__ void *__src, size_t __n);extern void *__memmove(void *__dest, __const__ void *__src, size_t __n);
#if defined(CONFIG_KASAN) && !defined(__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
#endif /* _XTENSA_STRING_H */