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Diffstat (limited to 'include/asm-mips/string.h')
| -rw-r--r-- | include/asm-mips/string.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/include/asm-mips/string.h b/include/asm-mips/string.h new file mode 100644 index 000000000..06d4f2ce5 --- /dev/null +++ b/include/asm-mips/string.h @@ -0,0 +1,209 @@ +/* + * include/asm-mips/string.h + * + * 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 by Ralf Baechle + */ + +#ifndef _ASM_MIPS_STRING_H_ +#define _ASM_MIPS_STRING_H_ + +#define __USE_PORTABLE_STRINGS_H_ + +extern 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,%1,1\n\t" + "sb\t$1,(%0)\n\t" + "bne\t$0,$1,1b\n\t" + "addiu\t%0,%0,1\n\t" + ".set\tat\n\t" + ".set\treorder" + : "=d" (dest), "=d" (src) + : "0" (dest), "1" (src) + : "$1","memory"); + + return xdest; +} + +extern 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" + "addiu\t%2,%2,-1\n\t" + "sb\t$1,(%0)\n\t" + "beq\t$0,$1,2f\n\t" + "addiu\t%0,%0,1\n\t" + "bne\t$0,%2,1b\n\t" + "addiu\t%1,%1,1\n" + "2:\n\t" + ".set\tat\n\t" + ".set\treorder\n\t" + : "=d" (dest), "=d" (src), "=d" (n) + : "0" (dest), "1" (src), "2" (n) + : "$1","memory"); + + return dest; +} + +#define __USE_PORTABLE_strcat +#define __USE_PORTABLE_strncat + +extern 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,%0,1\n\t" + "bne\t$1,%2,2f\n\t" + "addiu\t%1,%1,1\n\t" + "bne\t$0,%2,1b\n\t" + "lbu\t%2,(%0)\n" + "move\t%2,$1\n" + "2:\tsub\t%2,%2,$1\n" + "3:\t.set\tat\n\t" + ".set\treorder\n\t" + : "=d" (cs), "=d" (ct), "=d" (__res) + : "0" (cs), "1" (ct) + : "$1"); + + return __res; +} + +extern inline int strncmp(const char * cs,const char * ct,size_t count) +{ + char __res; + + __asm__ __volatile__( + ".set\tnoreorder\n\t" + ".set\tnoat\n" + "1:\tlbu\t%3,(%0)\n\t" + "beq\t$0,%2,2f\n\t" + "lbu\t$1,(%1)\n\t" + "addiu\t%2,%2,-1\n\t" + "bne\t$1,%3,3f\n\t" + "addiu\t%0,%0,1\n\t" + "bne\t$0,%3,1b\n\t" + "addiu\t%1,%1,1\n" + "2:\tmove\t%3,$1\n" + "3:\tsub\t%3,%3,$1\n\t" + ".set\tat\n\t" + ".set\treorder" + : "=d" (cs), "=d" (ct), "=d" (count), "=d" (__res) + : "0" (cs), "1" (ct), "2" (count) + : "$1"); + + return __res; +} + +#define __USE_PORTABLE_strchr +#define __USE_PORTABLE_strlen +#define __USE_PORTABLE_strspn +#define __USE_PORTABLE_strpbrk +#define __USE_PORTABLE_strtok + +extern inline void * memset(void * s,char c,size_t count) +{ + void *xs = s; + + if (!count) + return xs; + __asm__ __volatile__( + ".set\tnoreorder\n" + "1:\tsb\t%3,(%0)\n\t" + "addiu\t%1,%1,-1\n\t" + "bne\t$0,%1,1b\n\t" + "addiu\t%3,%3,1\n\t" + ".set\treorder" + : "=d" (s), "=d" (count) + : "0" (s), "d" (c), "1" (count) + : "memory"); + + return xs; +} + +extern inline void * memcpy(void * to, const void * from, size_t n) +{ + void *xto = to; + + if (!n) + return xto; + __asm__ __volatile__( + ".set\tnoreorder\n\t" + ".set\tnoat\n" + "1:\tlbu\t$1,(%1)\n\t" + "addiu\t%1,%1,1\n\t" + "sb\t$1,(%0)\n\t" + "addiu\t%2,%2,-1\n\t" + "bne\t$0,%2,1b\n\t" + "addiu\t%0,%0,1\n\t" + ".set\tat\n\t" + ".set\treorder" + : "=d" (to), "=d" (from), "=d" (n) + : "0" (to), "1" (from), "2" (n) + : "$1","memory" ); + return xto; +} + +extern inline void * memmove(void * dest,const void * src, size_t n) +{ + void *xdest = dest; + + if (!n) + return xdest; + + if (dest < src) + __asm__ __volatile__( + ".set\tnoreorder\n\t" + ".set\tnoat\n" + "1:\tlbu\t$1,(%1)\n\t" + "addiu\t%1,%1,1\n\t" + "sb\t$1,(%0)\n\t" + "addiu\t%2,%2,-1\n\t" + "bne\t$0,%2,1b\n\t" + "addiu\t%0,%0,1\n\t" + ".set\tat\n\t" + ".set\treorder" + : "=d" (dest), "=d" (src), "=d" (n) + : "0" (dest), "1" (src), "2" (n) + : "$1","memory" ); + else + __asm__ __volatile__( + ".set\tnoreorder\n\t" + ".set\tnoat\n" + "1:\tlbu\t$1,-1(%1)\n\t" + "addiu\t%1,%1,-1\n\t" + "sb\t$1,-1(%0)\n\t" + "addiu\t%2,%2,-1\n\t" + "bne\t$0,%2,1b\n\t" + "addiu\t%0,%0,-1\n\t" + ".set\tat\n\t" + ".set\treorder" + : "=d" (dest), "=d" (src), "=d" (n) + : "0" (dest+n), "1" (src+n), "2" (n) + : "$1","memory" ); + return xdest; +} + +#define __USE_PORTABLE_memcmp + +#endif /* _ASM_MIPS_STRING_H_ */ |