| /* | |
| * 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 */ |