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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-mips/] [string.h] - Blame information for rev 1765

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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, 1995, 1996, 1997, 1998, 2001 Ralf Baechle
 * Copyright (c) 2001 MIPS Technologies, Inc.
 */
#ifndef __ASM_STRING_H
#define __ASM_STRING_H
 
#include <linux/config.h>
 
#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;
}
 
#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;
}
 
#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);
 
/* Don't build bcopy at all ...  */
#define __HAVE_ARCH_BCOPY
 
#define __HAVE_ARCH_MEMSCAN
static __inline__ void *memscan(void *__addr, int __c, size_t __size)
{
        char *__end = (char *)__addr + __size;
        unsigned char __uc = (unsigned char) __c;
 
        __asm__(".set\tpush\n\t"
                ".set\tnoat\n\t"
                ".set\treorder\n\t"
                "1:\tbeq\t%0,%1,2f\n\t"
                "addiu\t%0,1\n\t"
                "lbu\t$1,-1(%0)\n\t"
                "bne\t$1,%z4,1b\n"
                "2:\t.set\tpop"
                : "=r" (__addr), "=r" (__end)
                : "0" (__addr), "1" (__end), "Jr" (__uc));
 
        return __addr;
}
 
#endif /* __ASM_STRING_H */

Line No.	Rev	Author	Line
1	1276	phoenix	`/*`
2			`* This file is subject to the terms and conditions of the GNU General Public`
3			`* License. See the file "COPYING" in the main directory of this archive`
4			`* for more details.`
5			`*`
6			`* Copyright (c) 1994, 1995, 1996, 1997, 1998, 2001 Ralf Baechle`
7			`* Copyright (c) 2001 MIPS Technologies, Inc.`
8			`*/`
9			`#ifndef __ASM_STRING_H`
10			`#define __ASM_STRING_H`
11
12			`#include <linux/config.h>`
13
14			`#define __HAVE_ARCH_STRCPY`
15			`static __inline__ char strcpy(char __dest, __const__ char *__src)`
16			`{`
17			`char *__xdest = __dest;`
18
19			`__asm__ __volatile__(`
20			`".set\tnoreorder\n\t"`
21			`".set\tnoat\n"`
22			`"1:\tlbu\t$1,(%1)\n\t"`
23			`"addiu\t%1,1\n\t"`
24			`"sb\t$1,(%0)\n\t"`
25			`"bnez\t$1,1b\n\t"`
26			`"addiu\t%0,1\n\t"`
27			`".set\tat\n\t"`
28			`".set\treorder"`
29			`: "=r" (__dest), "=r" (__src)`
30			`: "0" (__dest), "1" (__src)`
31			`: "memory");`
32
33			`return __xdest;`
34			`}`
35
36			`#define __HAVE_ARCH_STRNCPY`
37			`static __inline__ char strncpy(char __dest, __const__ char *__src, size_t __n)`
38			`{`
39			`char *__xdest = __dest;`
40
41			`if (__n == 0)`
42			`return __xdest;`
43
44			`__asm__ __volatile__(`
45			`".set\tnoreorder\n\t"`
46			`".set\tnoat\n"`
47			`"1:\tlbu\t$1,(%1)\n\t"`
48			`"subu\t%2,1\n\t"`
49			`"sb\t$1,(%0)\n\t"`
50			`"beqz\t$1,2f\n\t"`
51			`"addiu\t%0,1\n\t"`
52			`"bnez\t%2,1b\n\t"`
53			`"addiu\t%1,1\n"`
54			`"2:\n\t"`
55			`".set\tat\n\t"`
56			`".set\treorder"`
57			`: "=r" (__dest), "=r" (__src), "=r" (__n)`
58			`: "0" (__dest), "1" (__src), "2" (__n)`
59			`: "memory");`
60
61			`return __xdest;`
62			`}`
63
64			`#define __HAVE_ARCH_STRCMP`
65			`static __inline__ int strcmp(__const__ char __cs, __const__ char __ct)`
66			`{`
67			`int __res;`
68
69			`__asm__ __volatile__(`
70			`".set\tnoreorder\n\t"`
71			`".set\tnoat\n\t"`
72			`"lbu\t%2,(%0)\n"`
73			`"1:\tlbu\t$1,(%1)\n\t"`
74			`"addiu\t%0,1\n\t"`
75			`"bne\t$1,%2,2f\n\t"`
76			`"addiu\t%1,1\n\t"`
77			`"bnez\t%2,1b\n\t"`
78			`"lbu\t%2,(%0)\n\t"`
79			`#if defined(CONFIG_CPU_R3000)`
80			`"nop\n\t"`
81			`#endif`
82			`"move\t%2,$1\n"`
83			`"2:\tsubu\t%2,$1\n"`
84			`"3:\t.set\tat\n\t"`
85			`".set\treorder"`
86			`: "=r" (__cs), "=r" (__ct), "=r" (__res)`
87			`: "0" (__cs), "1" (__ct));`
88
89			`return __res;`
90			`}`
91
92			`#define __HAVE_ARCH_STRNCMP`
93			`static __inline__ int`
94			`strncmp(__const__ char __cs, __const__ char __ct, size_t __count)`
95			`{`
96			`int __res;`
97
98			`__asm__ __volatile__(`
99			`".set\tnoreorder\n\t"`
100			`".set\tnoat\n"`
101			`"1:\tlbu\t%3,(%0)\n\t"`
102			`"beqz\t%2,2f\n\t"`
103			`"lbu\t$1,(%1)\n\t"`
104			`"subu\t%2,1\n\t"`
105			`"bne\t$1,%3,3f\n\t"`
106			`"addiu\t%0,1\n\t"`
107			`"bnez\t%3,1b\n\t"`
108			`"addiu\t%1,1\n"`
109			`"2:\n\t"`
110			`#if defined(CONFIG_CPU_R3000)`
111			`"nop\n\t"`
112			`#endif`
113			`"move\t%3,$1\n"`
114			`"3:\tsubu\t%3,$1\n\t"`
115			`".set\tat\n\t"`
116			`".set\treorder"`
117			`: "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res)`
118			`: "0" (__cs), "1" (__ct), "2" (__count));`
119
120			`return __res;`
121			`}`
122
123			`#define __HAVE_ARCH_MEMSET`
124			`extern void memset(void __s, int __c, size_t __count);`
125
126			`#define __HAVE_ARCH_MEMCPY`
127			`extern void memcpy(void __to, __const__ void *__from, size_t __n);`
128
129			`#define __HAVE_ARCH_MEMMOVE`
130			`extern void memmove(void __dest, __const__ void *__src, size_t __n);`
131
132			`/* Don't build bcopy at all ... */`
133			`#define __HAVE_ARCH_BCOPY`
134
135			`#define __HAVE_ARCH_MEMSCAN`
136			`static __inline__ void memscan(void __addr, int __c, size_t __size)`
137			`{`
138			`char __end = (char )__addr + __size;`
139			`unsigned char __uc = (unsigned char) __c;`
140
141			`__asm__(".set\tpush\n\t"`
142			`".set\tnoat\n\t"`
143			`".set\treorder\n\t"`
144			`"1:\tbeq\t%0,%1,2f\n\t"`
145			`"addiu\t%0,1\n\t"`
146			`"lbu\t$1,-1(%0)\n\t"`
147			`"bne\t$1,%z4,1b\n"`
148			`"2:\t.set\tpop"`
149			`: "=r" (__addr), "=r" (__end)`
150			`: "0" (__addr), "1" (__end), "Jr" (__uc));`
151
152			`return __addr;`
153			`}`
154
155			`#endif /* __ASM_STRING_H */`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-mips/] [string.h] - Blame information for rev 1765