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92f1da4d | 1 | /* Optimized, inlined string functions. i386 version. |
74015205 | 2 | Copyright (C) 1997, 1998 Free Software Foundation, Inc. |
92f1da4d UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #ifndef _STRING_H | |
61eb22d3 | 21 | # error "Never use <bits/string.h> directly; include <string.h> instead." |
92f1da4d UD |
22 | #endif |
23 | ||
61eb22d3 UD |
24 | /* The ix86 processors can access unaligned multi-byte variables. */ |
25 | #define _STRING_ARCH_unaligned 1 | |
26 | ||
27 | ||
28 | /* We only provide optimizations if the user selects them and if | |
29 | GNU CC is used. */ | |
30 | #if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \ | |
31 | && defined __GNUC__ && __GNUC__ >= 2 | |
92f1da4d UD |
32 | |
33 | #ifdef __cplusplus | |
34 | # define __STRING_INLINE inline | |
35 | #else | |
36 | # define __STRING_INLINE extern __inline | |
37 | #endif | |
38 | ||
39 | ||
40 | /* Copy N bytes of SRC to DEST. */ | |
74015205 | 41 | #define _HAVE_STRING_ARCH_memcpy 1 |
92f1da4d UD |
42 | #define memcpy(dest, src, n) \ |
43 | (__extension__ (__builtin_constant_p (n) \ | |
44 | ? __memcpy_c (dest, src, n) \ | |
45 | : memcpy (dest, src, n))) | |
46 | /* This looks horribly ugly, but the compiler can optimize it totally, | |
47 | as the count is constant. */ | |
48 | __STRING_INLINE void * | |
49 | __memcpy_c (void *__dest, __const void *__src, size_t __n) | |
50 | { | |
a44d2393 | 51 | register unsigned long int __d0, __d1, __d2; |
9a0a462c | 52 | switch (__n) |
92f1da4d UD |
53 | { |
54 | case 0: | |
55 | return __dest; | |
56 | case 1: | |
57 | *(unsigned char *) __dest = *(const unsigned char *) __src; | |
58 | return __dest; | |
59 | case 2: | |
60 | *(unsigned short int *) __dest = *(const unsigned short int *) __src; | |
61 | return __dest; | |
62 | case 3: | |
63 | *(unsigned short int *) __dest = *(const unsigned short int *) __src; | |
64 | *(2 + (unsigned char *) __dest) = *(2 + (const unsigned char *) __src); | |
65 | return __dest; | |
66 | case 4: | |
67 | *(unsigned long int *) __dest = *(const unsigned long int *) __src; | |
68 | return __dest; | |
69 | case 6: /* for ethernet addresses */ | |
70 | *(unsigned long int *) __dest = *(const unsigned long int *) __src; | |
71 | *(2 + (unsigned short int *) __dest) = | |
72 | *(2 + (const unsigned short int *) __src); | |
73 | return __dest; | |
74 | case 8: | |
63bda0c1 | 75 | *(unsigned long int *) __dest = *(const unsigned long int *) __src; |
92f1da4d UD |
76 | *(1 + (unsigned long int *) __dest) = |
77 | *(1 + (const unsigned long int *) __src); | |
78 | return __dest; | |
79 | case 12: | |
80 | *(unsigned long int *) __dest = *(const unsigned long int *) __src; | |
81 | *(1 + (unsigned long int *) __dest) = | |
82 | *(1 + (const unsigned long int *) __src); | |
83 | *(2 + (unsigned long int *) __dest) = | |
84 | *(2 + (const unsigned long int *) __src); | |
85 | return __dest; | |
86 | case 16: | |
87 | *(unsigned long int *) __dest = *(const unsigned long int *) __src; | |
88 | *(1 + (unsigned long int *) __dest) = | |
89 | *(1 + (const unsigned long int *) __src); | |
90 | *(2 + (unsigned long int *) __dest) = | |
91 | *(2 + (const unsigned long int *) __src); | |
92 | *(3 + (unsigned long int *) __dest) = | |
93 | *(3 + (const unsigned long int *) __src); | |
94 | return __dest; | |
95 | case 20: | |
96 | *(unsigned long int *) __dest = *(const unsigned long int *) __src; | |
97 | *(1 + (unsigned long int *) __dest) = | |
98 | *(1 + (const unsigned long int *) __src); | |
99 | *(2 + (unsigned long int *) __dest) = | |
100 | *(2 + (const unsigned long int *) __src); | |
101 | *(3 + (unsigned long int *) __dest) = | |
102 | *(3 + (const unsigned long int *) __src); | |
103 | *(4 + (unsigned long int *) __dest) = | |
104 | *(4 + (const unsigned long int *) __src); | |
105 | return __dest; | |
106 | } | |
107 | #define __COMMON_CODE(x) \ | |
108 | __asm__ __volatile__ \ | |
109 | ("cld\n\t" \ | |
110 | "rep; movsl" \ | |
111 | x \ | |
68b50604 UD |
112 | : "=&c" (__d0), "=&D" (__d1), "=&S" (__d2) \ |
113 | : "0" (__n / 4), "1" (__dest), "2" (__src) \ | |
114 | : "memory"); | |
92f1da4d | 115 | |
9a0a462c | 116 | switch (__n % 4) |
92f1da4d UD |
117 | { |
118 | case 0: | |
119 | __COMMON_CODE (""); | |
120 | return __dest; | |
121 | case 1: | |
122 | __COMMON_CODE ("\n\tmovsb"); | |
123 | return __dest; | |
124 | case 2: | |
125 | __COMMON_CODE ("\n\tmovsw"); | |
126 | return __dest; | |
127 | case 3: | |
128 | __COMMON_CODE ("\n\tmovsw\n\tmovsb"); | |
129 | return __dest; | |
130 | } | |
131 | #undef __COMMON_CODE | |
132 | } | |
133 | ||
134 | ||
135 | /* Copy N bytes of SRC to DEST, guaranteeing | |
136 | correct behavior for overlapping strings. */ | |
74015205 | 137 | #define _HAVE_STRING_ARCH_memmove 1 |
92f1da4d UD |
138 | __STRING_INLINE void * |
139 | memmove (void *__dest, __const void *__src, size_t __n) | |
140 | { | |
a44d2393 | 141 | register unsigned long int __d0, __d1, __d2; |
92f1da4d UD |
142 | if (__dest < __src) |
143 | __asm__ __volatile__ | |
144 | ("cld\n\t" | |
145 | "rep\n\t" | |
146 | "movsb" | |
68b50604 UD |
147 | : "=&c" (__d0), "=&S" (__d1), "=&D" (__d2) |
148 | : "0" (__n), "1" (__src), "2" (__dest) | |
149 | : "memory"); | |
92f1da4d UD |
150 | else |
151 | __asm__ __volatile__ | |
152 | ("std\n\t" | |
153 | "rep\n\t" | |
154 | "movsb\n\t" | |
155 | "cld" | |
68b50604 UD |
156 | : "=&c" (__d0), "=&S" (__d1), "=&D" (__d2) |
157 | : "0" (__n), "1" (__n - 1 + (const char *) __src), | |
158 | "2" (__n - 1 + (char *) __dest) | |
159 | : "memory"); | |
92f1da4d UD |
160 | return __dest; |
161 | } | |
162 | ||
163 | ||
164 | /* Set N bytes of S to C. */ | |
74015205 | 165 | #define _HAVE_STRING_ARCH_memset 1 |
92f1da4d UD |
166 | #define memset(s, c, n) \ |
167 | (__extension__ (__builtin_constant_p (c) \ | |
168 | ? (__builtin_constant_p (n) \ | |
169 | ? __memset_cc (s, 0x01010101UL * (unsigned char) (c), n) \ | |
170 | : __memset_cg (s, 0x01010101UL * (unsigned char) (c), n))\ | |
171 | : __memset_gg (s, c, n))) | |
172 | ||
173 | __STRING_INLINE void * | |
174 | __memset_cc (void *__s, unsigned long int __pattern, size_t __n) | |
175 | { | |
a44d2393 | 176 | register unsigned long int __d0, __d1; |
92f1da4d UD |
177 | switch (__n) |
178 | { | |
179 | case 0: | |
63bda0c1 | 180 | return __s; |
92f1da4d UD |
181 | case 1: |
182 | *(unsigned char *) __s = __pattern; | |
183 | return __s; | |
184 | case 2: | |
185 | *(unsigned short int *) __s = __pattern; | |
63bda0c1 | 186 | return __s; |
92f1da4d UD |
187 | case 3: |
188 | *(unsigned short int *) __s = __pattern; | |
189 | *(2 + (unsigned char *) __s) = __pattern; | |
190 | return __s; | |
191 | case 4: | |
192 | *(unsigned long *) __s = __pattern; | |
193 | return __s; | |
194 | } | |
195 | #define __COMMON_CODE(x) \ | |
196 | __asm__ __volatile__ \ | |
197 | ("cld\n\t" \ | |
198 | "rep; stosl" \ | |
199 | x \ | |
68b50604 | 200 | : "=&c" (__d0), "=&D" (__d1) \ |
a44d2393 | 201 | : "a" (__pattern), "0" (__n / 4), "1" (__s) \ |
68b50604 | 202 | : "memory") |
92f1da4d UD |
203 | |
204 | switch (__n % 4) | |
205 | { | |
206 | case 0: | |
207 | __COMMON_CODE (""); | |
208 | return __s; | |
209 | case 1: | |
210 | __COMMON_CODE ("\n\tstosb"); | |
211 | return __s; | |
212 | case 2: | |
63bda0c1 | 213 | __COMMON_CODE ("\n\tstosw"); |
92f1da4d UD |
214 | return s; |
215 | case 3: | |
216 | __COMMON_CODE ("\n\tstosw\n\tstosb"); | |
217 | return __s; | |
218 | } | |
219 | #undef __COMMON_CODE | |
220 | } | |
221 | ||
222 | __STRING_INLINE void * | |
223 | __memset_cg (void *__s, unsigned long __c, size_t __n) | |
224 | { | |
a44d2393 | 225 | register unsigned long int __d0, __d1; |
92f1da4d UD |
226 | __asm__ __volatile__ |
227 | ("cld\n\t" | |
228 | "rep; stosl\n\t" | |
68b50604 | 229 | "testb $2,%b3\n\t" |
92f1da4d UD |
230 | "je 1f\n\t" |
231 | "stosw\n" | |
232 | "1:\n\t" | |
68b50604 | 233 | "testb $1,%b3\n\t" |
92f1da4d UD |
234 | "je 2f\n\t" |
235 | "stosb\n" | |
236 | "2:" | |
68b50604 UD |
237 | : "=&c" (__d0), "=&D" (__d1) |
238 | : "a" (__c), "q" (__n), "0" (__n / 4), "1" (__s) | |
239 | : "memory"); | |
92f1da4d UD |
240 | return __s; |
241 | } | |
242 | ||
243 | __STRING_INLINE void * | |
244 | __memset_gg (void *__s, char __c, size_t __n) | |
245 | { | |
a44d2393 | 246 | register unsigned long int __d0, __d1; |
92f1da4d UD |
247 | __asm__ __volatile__ |
248 | ("cld\n\t" | |
9a0a462c | 249 | "rep; stosb" |
68b50604 UD |
250 | : "=&D" (__d0), "=&c" (__d1) |
251 | : "a" (__c), "0" (__s), "1" (__n) | |
252 | : "memory"); | |
92f1da4d UD |
253 | return __s; |
254 | } | |
255 | ||
256 | ||
257 | ||
258 | ||
259 | /* Search N bytes of S for C. */ | |
74015205 | 260 | #define _HAVE_STRING_ARCH_memchr 1 |
92f1da4d UD |
261 | __STRING_INLINE void * |
262 | memchr (__const void *__s, int __c, size_t __n) | |
263 | { | |
a44d2393 | 264 | register unsigned long int __d0; |
92f1da4d | 265 | register void *__res; |
a44d2393 | 266 | if (__n == 0) |
92f1da4d UD |
267 | return NULL; |
268 | __asm__ __volatile__ | |
269 | ("cld\n\t" | |
a44d2393 UD |
270 | "repne; scasb\n\t" |
271 | "je 1f\n\t" | |
272 | "movl $1,%0\n" | |
92f1da4d | 273 | "1:" |
68b50604 UD |
274 | : "=D" (__res), "=&c" (__d0) |
275 | : "a" (__c), "0" (__s), "1" (__n)); | |
92f1da4d UD |
276 | return __res - 1; |
277 | } | |
278 | ||
279 | ||
280 | /* Return the length of S. */ | |
74015205 | 281 | #define _HAVE_STRING_ARCH_strlen 1 |
92f1da4d UD |
282 | __STRING_INLINE size_t |
283 | strlen (__const char *__str) | |
284 | { | |
a44d2393 | 285 | register unsigned long int __d0; |
92f1da4d UD |
286 | register size_t __res; |
287 | __asm__ __volatile__ | |
288 | ("cld\n\t" | |
289 | "repne; scasb\n\t" | |
290 | "notl %0" | |
68b50604 UD |
291 | : "=c" (__res), "=&D" (__d0) |
292 | : "1" (__str), "a" (0), "0" (0xffffffff) | |
293 | : "cc"); | |
92f1da4d UD |
294 | return __res - 1; |
295 | } | |
296 | ||
297 | ||
298 | /* Copy SRC to DEST. */ | |
74015205 | 299 | #define _HAVE_STRING_ARCH_strcpy 1 |
92f1da4d UD |
300 | __STRING_INLINE char * |
301 | strcpy (char *__dest, __const char *__src) | |
302 | { | |
a44d2393 | 303 | register unsigned long int __d0, __d1; |
92f1da4d UD |
304 | __asm__ __volatile__ |
305 | ("cld\n" | |
306 | "1:\n\t" | |
307 | "lodsb\n\t" | |
308 | "stosb\n\t" | |
309 | "testb %%al,%%al\n\t" | |
310 | "jne 1b" | |
68b50604 UD |
311 | : "=&S" (__d0), "=&D" (__d1) |
312 | : "0" (__src), "1" (__dest) | |
313 | : "ax", "memory", "cc"); | |
92f1da4d UD |
314 | return __dest; |
315 | } | |
316 | ||
317 | ||
318 | /* Copy no more than N characters of SRC to DEST. */ | |
74015205 | 319 | #define _HAVE_STRING_ARCH_strncpy 1 |
92f1da4d UD |
320 | __STRING_INLINE char * |
321 | strncpy (char *__dest, __const char *__src, size_t __n) | |
322 | { | |
a44d2393 | 323 | register unsigned long int __d0, __d1, __d2; |
92f1da4d UD |
324 | __asm__ __volatile__ |
325 | ("cld\n" | |
326 | "1:\n\t" | |
327 | "decl %2\n\t" | |
328 | "js 2f\n\t" | |
329 | "lodsb\n\t" | |
330 | "stosb\n\t" | |
331 | "testb %%al,%%al\n\t" | |
332 | "jne 1b\n\t" | |
333 | "rep; stosb\n" | |
334 | "2:" | |
68b50604 UD |
335 | : "=&S" (__d0), "=&D" (__d1), "=&c" (__d2) |
336 | : "0" (__src), "1" (__dest), "2" (__n) | |
337 | : "ax", "memory", "cc"); | |
92f1da4d UD |
338 | return __dest; |
339 | } | |
340 | ||
341 | ||
342 | /* Append SRC onto DEST. */ | |
74015205 | 343 | #define _HAVE_STRING_ARCH_strcat 1 |
92f1da4d UD |
344 | __STRING_INLINE char * |
345 | strcat (char *__dest, __const char *__src) | |
346 | { | |
a44d2393 | 347 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
348 | __asm__ __volatile__ |
349 | ("cld\n\t" | |
350 | "repne; scasb\n\t" | |
351 | "decl %1\n" | |
352 | "1:\n\t" | |
353 | "lodsb\n\t" | |
354 | "stosb\n\t" | |
355 | "testb %%al,%%al\n\t" | |
356 | "jne 1b" | |
68b50604 UD |
357 | : "=&S" (__d0), "=&D" (__d1), "=&c" (__d2), "=&a" (__d3) |
358 | : "0" (__src), "1" (__dest), "2" (0xffffffff), "3" (0) | |
359 | : "memory", "cc"); | |
92f1da4d UD |
360 | return __dest; |
361 | } | |
362 | ||
363 | ||
364 | /* Append no more than N characters from SRC onto DEST. */ | |
74015205 | 365 | #define _HAVE_STRING_ARCH_strncat 1 |
92f1da4d UD |
366 | __STRING_INLINE char * |
367 | strncat (char *__dest, __const char *__src, size_t __n) | |
368 | { | |
a44d2393 | 369 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
370 | __asm__ __volatile__ |
371 | ("cld\n\t" | |
372 | "repne; scasb\n\t" | |
373 | "decl %1\n\t" | |
68b50604 | 374 | "movl %5,%3\n" |
92f1da4d UD |
375 | "1:\n\t" |
376 | "decl %3\n\t" | |
377 | "js 2f\n\t" | |
378 | "lodsb\n\t" | |
379 | "stosb\n\t" | |
380 | "testb %%al,%%al\n\t" | |
381 | "jne 1b\n" | |
382 | "2:\n\t" | |
383 | "xorl %2,%2\n\t" | |
384 | "stosb" | |
68b50604 UD |
385 | : "=&S" (__d0), "=&D" (__d1), "=&c" (__d2), "=&a" (__d3) |
386 | : "g" (__n), "0" (__src), "1" (__dest), "2" (0xffffffff), "3" (0) | |
387 | : "memory", "cc"); | |
92f1da4d UD |
388 | return __dest; |
389 | } | |
390 | ||
391 | ||
392 | /* Compare S1 and S2. */ | |
74015205 | 393 | #define _HAVE_STRING_ARCH_strcmp 1 |
92f1da4d UD |
394 | __STRING_INLINE int |
395 | strcmp (__const char *__s1, __const char *__s2) | |
396 | { | |
a44d2393 | 397 | register unsigned long int __d0, __d1; |
92f1da4d UD |
398 | register int __res; |
399 | __asm__ __volatile__ | |
400 | ("cld\n" | |
401 | "1:\n\t" | |
402 | "lodsb\n\t" | |
403 | "scasb\n\t" | |
404 | "jne 2f\n\t" | |
405 | "testb %%al,%%al\n\t" | |
406 | "jne 1b\n\t" | |
407 | "xorl %%eax,%%eax\n\t" | |
408 | "jmp 3f\n" | |
409 | "2:\n\t" | |
410 | "sbbl %%eax,%%eax\n\t" | |
411 | "orb $1,%%eax\n" | |
412 | "3:" | |
68b50604 UD |
413 | : "=a" (__res), "=&S" (__d0), "=&D" (__d1) |
414 | : "1" (__s1), "2" (__s2) | |
415 | : "cc"); | |
92f1da4d UD |
416 | return __res; |
417 | } | |
418 | ||
419 | ||
420 | /* Compare N characters of S1 and S2. */ | |
74015205 | 421 | #define _HAVE_STRING_ARCH_strncmp 1 |
92f1da4d UD |
422 | __STRING_INLINE int |
423 | strncmp (__const char *__s1, __const char *__s2, size_t __n) | |
424 | { | |
a44d2393 | 425 | register unsigned long int __d0, __d1, __d2; |
92f1da4d UD |
426 | register int __res; |
427 | __asm__ __volatile__ | |
428 | ("cld\n" | |
429 | "1:\n\t" | |
430 | "decl %3\n\t" | |
431 | "js 2f\n\t" | |
432 | "lodsb\n\t" | |
433 | "scasb\n\t" | |
434 | "jne 3f\n\t" | |
435 | "testb %%al,%%al\n\t" | |
436 | "jne 1b\n" | |
437 | "2:\n\t" | |
438 | "xorl %%eax,%%eax\n\t" | |
439 | "jmp 4f\n" | |
440 | "3:\n\t" | |
441 | "sbbl %%eax,%%eax\n\t" | |
442 | "orb $1,%%al\n" | |
443 | "4:" | |
68b50604 UD |
444 | : "=a" (__res), "=&S" (__d0), "=&D" (__d1), "=&c" (__d2) |
445 | : "1" (__s1), "2" (__s2), "3" (__n) | |
446 | : "cc"); | |
92f1da4d UD |
447 | return __res; |
448 | } | |
449 | ||
450 | ||
451 | /* Find the first occurrence of C in S. */ | |
74015205 | 452 | #define _HAVE_STRING_ARCH_strchr 1 |
92f1da4d UD |
453 | #define strchr(s, c) \ |
454 | (__extension__ (__builtin_constant_p (c) \ | |
455 | ? __strchr_c (s, ((c) & 0xff) << 8) \ | |
456 | : __strchr_g (s, c))) | |
457 | ||
458 | __STRING_INLINE char * | |
459 | __strchr_g (__const char *__s, int __c) | |
460 | { | |
a44d2393 | 461 | register unsigned long int __d0; |
92f1da4d UD |
462 | register char *__res; |
463 | __asm__ __volatile__ | |
464 | ("cld\n\t" | |
465 | "movb %%al,%%ah\n" | |
466 | "1:\n\t" | |
467 | "lodsb\n\t" | |
468 | "cmpb %%ah,%%al\n\t" | |
469 | "je 2f\n\t" | |
470 | "testb %%al,%%al\n\t" | |
471 | "jne 1b\n\t" | |
472 | "movl $1,%1\n" | |
473 | "2:\n\t" | |
474 | "movl %1,%0" | |
68b50604 UD |
475 | : "=a" (__res), "=&S" (__d0) |
476 | : "0" (__c), "1" (__s) | |
477 | : "cc"); | |
92f1da4d UD |
478 | return __res - 1; |
479 | } | |
480 | ||
481 | __STRING_INLINE char * | |
482 | __strchr_c (__const char *__s, int __c) | |
483 | { | |
a44d2393 | 484 | register unsigned long int __d0; |
92f1da4d UD |
485 | register char *__res; |
486 | __asm__ __volatile__ | |
487 | ("cld\n\t" | |
488 | "1:\n\t" | |
489 | "lodsb\n\t" | |
490 | "cmpb %%ah,%%al\n\t" | |
491 | "je 2f\n\t" | |
492 | "testb %%al,%%al\n\t" | |
493 | "jne 1b\n\t" | |
494 | "movl $1,%1\n" | |
495 | "2:\n\t" | |
496 | "movl %1,%0" | |
68b50604 UD |
497 | : "=a" (__res), "=&S" (__d0) |
498 | : "0" (__c), "1" (__s) | |
499 | : "cc"); | |
92f1da4d UD |
500 | return __res - 1; |
501 | } | |
502 | ||
503 | ||
504 | /* Return the length of the initial segment of S which | |
505 | consists entirely of characters not in REJECT. */ | |
74015205 | 506 | #define _HAVE_STRING_ARCH_strcspn 1 |
92f1da4d UD |
507 | #ifdef __PIC__ |
508 | __STRING_INLINE size_t | |
509 | strcspn (__const char *__s, __const char *__reject) | |
510 | { | |
a44d2393 | 511 | register unsigned long int __d0, __d1, __d2; |
92f1da4d UD |
512 | register char *__res; |
513 | __asm__ __volatile__ | |
514 | ("pushl %%ebx\n\t" | |
515 | "cld\n\t" | |
516 | "movl %4,%%edi\n\t" | |
517 | "repne; scasb\n\t" | |
518 | "notl %%ecx\n\t" | |
519 | "decl %%ecx\n\t" | |
520 | "movl %%ecx,%%ebx\n" | |
521 | "1:\n\t" | |
522 | "lodsb\n\t" | |
523 | "testb %%al,%%al\n\t" | |
524 | "je 2f\n\t" | |
525 | "movl %4,%%edi\n\t" | |
526 | "movl %%ebx,%%ecx\n\t" | |
527 | "repne; scasb\n\t" | |
528 | "jne 1b\n" | |
529 | "2:\n\t" | |
530 | "popl %%ebx" | |
68b50604 UD |
531 | : "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2) |
532 | : "r" (__reject), "1" (0), "2" (0xffffffff), "3" (__s), | |
533 | : "cc"); | |
92f1da4d UD |
534 | return (__res - 1) - __s; |
535 | } | |
536 | #else | |
537 | __STRING_INLINE size_t | |
538 | strcspn (__const char *__s, __const char *__reject) | |
539 | { | |
a44d2393 | 540 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
541 | register char *__res; |
542 | __asm__ __volatile__ | |
543 | ("cld\n\t" | |
68b50604 | 544 | "movl %5,%%edi\n\t" |
92f1da4d UD |
545 | "repne; scasb\n\t" |
546 | "notl %%ecx\n\t" | |
547 | "decl %%ecx\n\t" | |
548 | "movl %%ecx,%%edx\n" | |
549 | "1:\n\t" | |
550 | "lodsb\n\t" | |
551 | "testb %%al,%%al\n\t" | |
552 | "je 2f\n\t" | |
68b50604 | 553 | "movl %5,%%edi\n\t" |
92f1da4d UD |
554 | "movl %%edx,%%ecx\n\t" |
555 | "repne; scasb\n\t" | |
556 | "jne 1b\n" | |
557 | "2:" | |
68b50604 UD |
558 | : "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3) |
559 | : "g" (__reject), "0" (__s), "1" (0), "2" (0xffffffff) | |
560 | : "cc"); | |
92f1da4d UD |
561 | return (__res - 1) - __s; |
562 | } | |
563 | #endif | |
564 | ||
565 | ||
566 | /* Return the length of the initial segment of S which | |
567 | consists entirely of characters in ACCEPT. */ | |
74015205 | 568 | #define _HAVE_STRING_ARCH_strspn 1 |
92f1da4d UD |
569 | #ifdef __PIC__ |
570 | __STRING_INLINE size_t | |
571 | strspn (__const char *__s, __const char *__accept) | |
572 | { | |
a44d2393 | 573 | register unsigned long int __d0, __d1, __d2; |
92f1da4d UD |
574 | register char *__res; |
575 | __asm__ __volatile__ | |
576 | ("pushl %%ebx\n\t" | |
577 | "cld\n\t" | |
578 | "movl %4,%%edi\n\t" | |
579 | "repne; scasb\n\t" | |
580 | "notl %%ecx\n\t" | |
581 | "decl %%ecx\n\t" | |
582 | "movl %%ecx,%%ebx\n" | |
583 | "1:\n\t" | |
584 | "lodsb\n\t" | |
585 | "testb %%al,%%al\n\t" | |
586 | "je 2f\n\t" | |
587 | "movl %4,%%edi\n\t" | |
588 | "movl %%ebx,%%ecx\n\t" | |
589 | "repne; scasb\n\t" | |
590 | "je 1b\n" | |
591 | "2:\n\t" | |
592 | "popl %%ebx" | |
68b50604 UD |
593 | : "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2) |
594 | : "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff) | |
595 | : "cc"); | |
92f1da4d UD |
596 | return (__res - 1) - __s; |
597 | } | |
598 | #else | |
599 | __STRING_INLINE size_t | |
600 | strspn (__const char *__s, __const char *__accept) | |
601 | { | |
a44d2393 | 602 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
603 | register char *__res; |
604 | __asm__ __volatile__ | |
605 | ("cld\n\t" | |
68b50604 | 606 | "movl %5,%%edi\n\t" |
92f1da4d UD |
607 | "repne; scasb\n\t" |
608 | "notl %%ecx\n\t" | |
609 | "decl %%ecx\n\t" | |
610 | "movl %%ecx,%%edx\n" | |
611 | "1:\n\t" | |
612 | "lodsb\n\t" | |
613 | "testb %%al,%%al\n\t" | |
614 | "je 2f\n\t" | |
68b50604 | 615 | "movl %5,%%edi\n\t" |
92f1da4d UD |
616 | "movl %%edx,%%ecx\n\t" |
617 | "repne; scasb\n\t" | |
618 | "je 1b\n" | |
619 | "2:" | |
68b50604 UD |
620 | : "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3) |
621 | : "g" (__accept), "0" (__s), "a" (0), "c" (0xffffffff) | |
622 | : "cc"); | |
92f1da4d UD |
623 | return (__res - 1) - __s; |
624 | } | |
625 | #endif | |
626 | ||
627 | ||
628 | /* Find the first occurrence in S of any character in ACCEPT. */ | |
74015205 | 629 | #define _HAVE_STRING_ARCH_strpbrk 1 |
92f1da4d UD |
630 | #ifdef __PIC__ |
631 | __STRING_INLINE char * | |
632 | strpbrk (__const char *__s, __const char *__accept) | |
633 | { | |
68b50604 | 634 | unsigned long int __d0, __d1, __d2; |
92f1da4d UD |
635 | register char *__res; |
636 | __asm__ __volatile__ | |
637 | ("pushl %%ebx\n\t" | |
638 | "cld\n\t" | |
639 | "movl %4,%%edi\n\t" | |
640 | "repne; scasb\n\t" | |
641 | "notl %%ecx\n\t" | |
642 | "decl %%ecx\n\t" | |
643 | "movl %%ecx,%%ebx\n" | |
644 | "1:\n\t" | |
645 | "lodsb\n\t" | |
646 | "testb %%al,%%al\n\t" | |
647 | "je 2f\n\t" | |
648 | "movl %4,%%edi\n\t" | |
649 | "movl %%ebx,%%ecx\n\t" | |
650 | "repne; scasb\n\t" | |
651 | "jne 1b\n\t" | |
652 | "decl %0\n\t" | |
653 | "jmp 3f\n" | |
654 | "2:\n\t" | |
655 | "xorl %0,%0\n" | |
656 | "3:\n\t" | |
657 | "popl %%ebx" | |
68b50604 UD |
658 | : "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2) |
659 | : "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff) | |
660 | : "cc"); | |
92f1da4d UD |
661 | return __res; |
662 | } | |
663 | #else | |
664 | __STRING_INLINE char * | |
665 | strpbrk (__const char *__s, __const char *__accept) | |
666 | { | |
a44d2393 | 667 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
668 | register char *__res; |
669 | __asm__ __volatile__ | |
670 | ("cld\n\t" | |
671 | "movl %4,%%edi\n\t" | |
672 | "repne; scasb\n\t" | |
673 | "notl %%ecx\n\t" | |
674 | "decl %%ecx\n\t" | |
675 | "movl %%ecx,%%edx\n" | |
676 | "1:\n\t" | |
677 | "lodsb\n\t" | |
678 | "testb %%al,%%al\n\t" | |
679 | "je 2f\n\t" | |
680 | "movl %4,%%edi\n\t" | |
681 | "movl %%edx,%%ecx\n\t" | |
682 | "repne; scasb\n\t" | |
683 | "jne 1b\n\t" | |
684 | "decl %0\n\t" | |
685 | "jmp 3f\n" | |
686 | "2:\n\t" | |
687 | "xorl %0,%0\n" | |
688 | "3:" | |
68b50604 UD |
689 | : "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3) |
690 | : "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff) | |
691 | : "cc"); | |
92f1da4d UD |
692 | return __res; |
693 | } | |
694 | #endif | |
695 | ||
696 | ||
697 | /* Find the first occurrence of NEEDLE in HAYSTACK. */ | |
74015205 | 698 | #define _HAVE_STRING_ARCH_strstr 1 |
92f1da4d UD |
699 | #ifdef __PIC__ |
700 | __STRING_INLINE char * | |
701 | strstr (__const char *__haystack, __const char *__needle) | |
702 | { | |
a44d2393 | 703 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
704 | register char *__res; |
705 | __asm__ __volatile__ | |
706 | ("pushl %%ebx\n\t" | |
707 | "cld\n\t" \ | |
708 | "movl %4,%%edi\n\t" | |
709 | "repne; scasb\n\t" | |
710 | "notl %%ecx\n\t" | |
711 | "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */ | |
712 | "movl %%ecx,%%ebx\n" | |
713 | "1:\n\t" | |
714 | "movl %4,%%edi\n\t" | |
715 | "movl %%esi,%%eax\n\t" | |
716 | "movl %%ebx,%%ecx\n\t" | |
717 | "repe; cmpsb\n\t" | |
718 | "je 2f\n\t" /* also works for empty string, see above */ | |
719 | "xchgl %%eax,%%esi\n\t" | |
720 | "incl %%esi\n\t" | |
721 | "cmpb $0,-1(%%eax)\n\t" | |
722 | "jne 1b\n\t" | |
723 | "xorl %%eax,%%eax\n\t" | |
724 | "2:\n\t" | |
725 | "popl %%ebx" | |
68b50604 UD |
726 | : "=&a" (__res), "=&c" (__d0), "=&S" (__d1), "=&D" (__d2) |
727 | : "r" (__needle), "0" (0), "1" (0xffffffff), "2" (__haystack) | |
728 | : "cc"); | |
92f1da4d UD |
729 | return __res; |
730 | } | |
731 | #else | |
732 | __STRING_INLINE char * | |
733 | strstr (__const char *__haystack, __const char *__needle) | |
734 | { | |
a44d2393 | 735 | register unsigned long int __d0, __d1, __d2, __d3; |
92f1da4d UD |
736 | register char *__res; |
737 | __asm__ __volatile__ | |
738 | ("cld\n\t" \ | |
68b50604 | 739 | "movl %5,%%edi\n\t" |
92f1da4d UD |
740 | "repne; scasb\n\t" |
741 | "notl %%ecx\n\t" | |
742 | "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */ | |
743 | "movl %%ecx,%%edx\n" | |
744 | "1:\n\t" | |
68b50604 | 745 | "movl %5,%%edi\n\t" |
92f1da4d UD |
746 | "movl %%esi,%%eax\n\t" |
747 | "movl %%edx,%%ecx\n\t" | |
748 | "repe; cmpsb\n\t" | |
749 | "je 2f\n\t" /* also works for empty string, see above */ | |
750 | "xchgl %%eax,%%esi\n\t" | |
751 | "incl %%esi\n\t" | |
752 | "cmpb $0,-1(%%eax)\n\t" | |
753 | "jne 1b\n\t" | |
754 | "xorl %%eax,%%eax\n\t" | |
755 | "2:" | |
68b50604 UD |
756 | : "=&a" (__res), "=&c" (__d0), "=&S" (__d1), "=&d" (__d2), "=&D" (__d3) |
757 | : "g" (__needle), "0" (0), "1" (0xffffffff), "2" (__haystack) | |
758 | : "cc"); | |
92f1da4d UD |
759 | return __res; |
760 | } | |
761 | #endif | |
762 | ||
763 | ||
764 | #undef __STRING_INLINE | |
765 | ||
61eb22d3 | 766 | #endif /* use string inlines && GNU CC */ |