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/*
* 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) 1994, 95, 96, 97, 98, 2000, 01 Ralf Baechle
* Copyright (c) 2000 by Silicon Graphics, Inc.
* Copyright (c) 2001 MIPS Technologies, Inc.
*/
#ifndef _ASM_STRING_H
#define _ASM_STRING_H
/*
* Most of the inline functions are rather naive implementations so I just
* didn't bother updating them for 64-bit ...
*/
#ifdef CONFIG_32BIT
#ifndef IN_STRING_C
#define __HAVE_ARCH_STRCPY
static __inline__ char *strcpy(char *__dest, __const__ char *__src)
{
char *__xdest = __dest;
__asm__ __volatile__(
".set\tnoreorder\n\t"
".set\tnoat\n"
"1:\tlbu\t$1,(%1)\n\t"
"addiu\t%1,1\n\t"
"sb\t$1,(%0)\n\t"
"bnez\t$1,1b\n\t"
"addiu\t%0,1\n\t"
".set\tat\n\t"
".set\treorder"
: "=r" (__dest), "=r" (__src)
: "0" (__dest), "1" (__src)
: "memory");
return __xdest;
}
#define __HAVE_ARCH_STRNCPY
static __inline__ char *strncpy(char *__dest, __const__ char *__src, size_t __n)
{
char *__xdest = __dest;
if (__n == 0)
return __xdest;
__asm__ __volatile__(
".set\tnoreorder\n\t"
".set\tnoat\n"
"1:\tlbu\t$1,(%1)\n\t"
"subu\t%2,1\n\t"
"sb\t$1,(%0)\n\t"
"beqz\t$1,2f\n\t"
"addiu\t%0,1\n\t"
"bnez\t%2,1b\n\t"
"addiu\t%1,1\n"
"2:\n\t"
".set\tat\n\t"
".set\treorder"
: "=r" (__dest), "=r" (__src), "=r" (__n)
: "0" (__dest), "1" (__src), "2" (__n)
: "memory");
return __xdest;
}
#define __HAVE_ARCH_STRCMP
static __inline__ int strcmp(__const__ char *__cs, __const__ char *__ct)
{
int __res;
__asm__ __volatile__(
".set\tnoreorder\n\t"
".set\tnoat\n\t"
"lbu\t%2,(%0)\n"
"1:\tlbu\t$1,(%1)\n\t"
"addiu\t%0,1\n\t"
"bne\t$1,%2,2f\n\t"
"addiu\t%1,1\n\t"
"bnez\t%2,1b\n\t"
"lbu\t%2,(%0)\n\t"
#if defined(CONFIG_CPU_R3000)
"nop\n\t"
#endif
"move\t%2,$1\n"
"2:\tsubu\t%2,$1\n"
"3:\t.set\tat\n\t"
".set\treorder"
: "=r" (__cs), "=r" (__ct), "=r" (__res)
: "0" (__cs), "1" (__ct));
return __res;
}
#endif /* !defined(IN_STRING_C) */
#define __HAVE_ARCH_STRNCMP
static __inline__ int
strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count)
{
int __res;
__asm__ __volatile__(
".set\tnoreorder\n\t"
".set\tnoat\n"
"1:\tlbu\t%3,(%0)\n\t"
"beqz\t%2,2f\n\t"
"lbu\t$1,(%1)\n\t"
"subu\t%2,1\n\t"
"bne\t$1,%3,3f\n\t"
"addiu\t%0,1\n\t"
"bnez\t%3,1b\n\t"
"addiu\t%1,1\n"
"2:\n\t"
#if defined(CONFIG_CPU_R3000)
"nop\n\t"
#endif
"move\t%3,$1\n"
"3:\tsubu\t%3,$1\n\t"
".set\tat\n\t"
".set\treorder"
: "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res)
: "0" (__cs), "1" (__ct), "2" (__count));
return __res;
}
#endif /* CONFIG_32BIT */
#define __HAVE_ARCH_MEMSET
extern void *memset(void *__s, int __c, size_t __count);
#define __HAVE_ARCH_MEMCPY
extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
#endif /* _ASM_STRING_H */