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-rw-r--r--include/asm-x86/string_32.h326
1 files changed, 0 insertions, 326 deletions
diff --git a/include/asm-x86/string_32.h b/include/asm-x86/string_32.h
deleted file mode 100644
index 487843ed245a..000000000000
--- a/include/asm-x86/string_32.h
+++ /dev/null
@@ -1,326 +0,0 @@
1#ifndef ASM_X86__STRING_32_H
2#define ASM_X86__STRING_32_H
3
4#ifdef __KERNEL__
5
6/* Let gcc decide whether to inline or use the out of line functions */
7
8#define __HAVE_ARCH_STRCPY
9extern char *strcpy(char *dest, const char *src);
10
11#define __HAVE_ARCH_STRNCPY
12extern char *strncpy(char *dest, const char *src, size_t count);
13
14#define __HAVE_ARCH_STRCAT
15extern char *strcat(char *dest, const char *src);
16
17#define __HAVE_ARCH_STRNCAT
18extern char *strncat(char *dest, const char *src, size_t count);
19
20#define __HAVE_ARCH_STRCMP
21extern int strcmp(const char *cs, const char *ct);
22
23#define __HAVE_ARCH_STRNCMP
24extern int strncmp(const char *cs, const char *ct, size_t count);
25
26#define __HAVE_ARCH_STRCHR
27extern char *strchr(const char *s, int c);
28
29#define __HAVE_ARCH_STRLEN
30extern size_t strlen(const char *s);
31
32static __always_inline void *__memcpy(void *to, const void *from, size_t n)
33{
34 int d0, d1, d2;
35 asm volatile("rep ; movsl\n\t"
36 "movl %4,%%ecx\n\t"
37 "andl $3,%%ecx\n\t"
38 "jz 1f\n\t"
39 "rep ; movsb\n\t"
40 "1:"
41 : "=&c" (d0), "=&D" (d1), "=&S" (d2)
42 : "0" (n / 4), "g" (n), "1" ((long)to), "2" ((long)from)
43 : "memory");
44 return to;
45}
46
47/*
48 * This looks ugly, but the compiler can optimize it totally,
49 * as the count is constant.
50 */
51static __always_inline void *__constant_memcpy(void *to, const void *from,
52 size_t n)
53{
54 long esi, edi;
55 if (!n)
56 return to;
57
58 switch (n) {
59 case 1:
60 *(char *)to = *(char *)from;
61 return to;
62 case 2:
63 *(short *)to = *(short *)from;
64 return to;
65 case 4:
66 *(int *)to = *(int *)from;
67 return to;
68
69 case 3:
70 *(short *)to = *(short *)from;
71 *((char *)to + 2) = *((char *)from + 2);
72 return to;
73 case 5:
74 *(int *)to = *(int *)from;
75 *((char *)to + 4) = *((char *)from + 4);
76 return to;
77 case 6:
78 *(int *)to = *(int *)from;
79 *((short *)to + 2) = *((short *)from + 2);
80 return to;
81 case 8:
82 *(int *)to = *(int *)from;
83 *((int *)to + 1) = *((int *)from + 1);
84 return to;
85 }
86
87 esi = (long)from;
88 edi = (long)to;
89 if (n >= 5 * 4) {
90 /* large block: use rep prefix */
91 int ecx;
92 asm volatile("rep ; movsl"
93 : "=&c" (ecx), "=&D" (edi), "=&S" (esi)
94 : "0" (n / 4), "1" (edi), "2" (esi)
95 : "memory"
96 );
97 } else {
98 /* small block: don't clobber ecx + smaller code */
99 if (n >= 4 * 4)
100 asm volatile("movsl"
101 : "=&D"(edi), "=&S"(esi)
102 : "0"(edi), "1"(esi)
103 : "memory");
104 if (n >= 3 * 4)
105 asm volatile("movsl"
106 : "=&D"(edi), "=&S"(esi)
107 : "0"(edi), "1"(esi)
108 : "memory");
109 if (n >= 2 * 4)
110 asm volatile("movsl"
111 : "=&D"(edi), "=&S"(esi)
112 : "0"(edi), "1"(esi)
113 : "memory");
114 if (n >= 1 * 4)
115 asm volatile("movsl"
116 : "=&D"(edi), "=&S"(esi)
117 : "0"(edi), "1"(esi)
118 : "memory");
119 }
120 switch (n % 4) {
121 /* tail */
122 case 0:
123 return to;
124 case 1:
125 asm volatile("movsb"
126 : "=&D"(edi), "=&S"(esi)
127 : "0"(edi), "1"(esi)
128 : "memory");
129 return to;
130 case 2:
131 asm volatile("movsw"
132 : "=&D"(edi), "=&S"(esi)
133 : "0"(edi), "1"(esi)
134 : "memory");
135 return to;
136 default:
137 asm volatile("movsw\n\tmovsb"
138 : "=&D"(edi), "=&S"(esi)
139 : "0"(edi), "1"(esi)
140 : "memory");
141 return to;
142 }
143}
144
145#define __HAVE_ARCH_MEMCPY
146
147#ifdef CONFIG_X86_USE_3DNOW
148
149#include <asm/mmx.h>
150
151/*
152 * This CPU favours 3DNow strongly (eg AMD Athlon)
153 */
154
155static inline void *__constant_memcpy3d(void *to, const void *from, size_t len)
156{
157 if (len < 512)
158 return __constant_memcpy(to, from, len);
159 return _mmx_memcpy(to, from, len);
160}
161
162static inline void *__memcpy3d(void *to, const void *from, size_t len)
163{
164 if (len < 512)
165 return __memcpy(to, from, len);
166 return _mmx_memcpy(to, from, len);
167}
168
169#define memcpy(t, f, n) \
170 (__builtin_constant_p((n)) \
171 ? __constant_memcpy3d((t), (f), (n)) \
172 : __memcpy3d((t), (f), (n)))
173
174#else
175
176/*
177 * No 3D Now!
178 */
179
180#define memcpy(t, f, n) \
181 (__builtin_constant_p((n)) \
182 ? __constant_memcpy((t), (f), (n)) \
183 : __memcpy((t), (f), (n)))
184
185#endif
186
187#define __HAVE_ARCH_MEMMOVE
188void *memmove(void *dest, const void *src, size_t n);
189
190#define memcmp __builtin_memcmp
191
192#define __HAVE_ARCH_MEMCHR
193extern void *memchr(const void *cs, int c, size_t count);
194
195static inline void *__memset_generic(void *s, char c, size_t count)
196{
197 int d0, d1;
198 asm volatile("rep\n\t"
199 "stosb"
200 : "=&c" (d0), "=&D" (d1)
201 : "a" (c), "1" (s), "0" (count)
202 : "memory");
203 return s;
204}
205
206/* we might want to write optimized versions of these later */
207#define __constant_count_memset(s, c, count) __memset_generic((s), (c), (count))
208
209/*
210 * memset(x, 0, y) is a reasonably common thing to do, so we want to fill
211 * things 32 bits at a time even when we don't know the size of the
212 * area at compile-time..
213 */
214static __always_inline
215void *__constant_c_memset(void *s, unsigned long c, size_t count)
216{
217 int d0, d1;
218 asm volatile("rep ; stosl\n\t"
219 "testb $2,%b3\n\t"
220 "je 1f\n\t"
221 "stosw\n"
222 "1:\ttestb $1,%b3\n\t"
223 "je 2f\n\t"
224 "stosb\n"
225 "2:"
226 : "=&c" (d0), "=&D" (d1)
227 : "a" (c), "q" (count), "0" (count/4), "1" ((long)s)
228 : "memory");
229 return s;
230}
231
232/* Added by Gertjan van Wingerde to make minix and sysv module work */
233#define __HAVE_ARCH_STRNLEN
234extern size_t strnlen(const char *s, size_t count);
235/* end of additional stuff */
236
237#define __HAVE_ARCH_STRSTR
238extern char *strstr(const char *cs, const char *ct);
239
240/*
241 * This looks horribly ugly, but the compiler can optimize it totally,
242 * as we by now know that both pattern and count is constant..
243 */
244static __always_inline
245void *__constant_c_and_count_memset(void *s, unsigned long pattern,
246 size_t count)
247{
248 switch (count) {
249 case 0:
250 return s;
251 case 1:
252 *(unsigned char *)s = pattern & 0xff;
253 return s;
254 case 2:
255 *(unsigned short *)s = pattern & 0xffff;
256 return s;
257 case 3:
258 *(unsigned short *)s = pattern & 0xffff;
259 *((unsigned char *)s + 2) = pattern & 0xff;
260 return s;
261 case 4:
262 *(unsigned long *)s = pattern;
263 return s;
264 }
265
266#define COMMON(x) \
267 asm volatile("rep ; stosl" \
268 x \
269 : "=&c" (d0), "=&D" (d1) \
270 : "a" (eax), "0" (count/4), "1" ((long)s) \
271 : "memory")
272
273 {
274 int d0, d1;
275#if __GNUC__ == 4 && __GNUC_MINOR__ == 0
276 /* Workaround for broken gcc 4.0 */
277 register unsigned long eax asm("%eax") = pattern;
278#else
279 unsigned long eax = pattern;
280#endif
281
282 switch (count % 4) {
283 case 0:
284 COMMON("");
285 return s;
286 case 1:
287 COMMON("\n\tstosb");
288 return s;
289 case 2:
290 COMMON("\n\tstosw");
291 return s;
292 default:
293 COMMON("\n\tstosw\n\tstosb");
294 return s;
295 }
296 }
297
298#undef COMMON
299}
300
301#define __constant_c_x_memset(s, c, count) \
302 (__builtin_constant_p(count) \
303 ? __constant_c_and_count_memset((s), (c), (count)) \
304 : __constant_c_memset((s), (c), (count)))
305
306#define __memset(s, c, count) \
307 (__builtin_constant_p(count) \
308 ? __constant_count_memset((s), (c), (count)) \
309 : __memset_generic((s), (c), (count)))
310
311#define __HAVE_ARCH_MEMSET
312#define memset(s, c, count) \
313 (__builtin_constant_p(c) \
314 ? __constant_c_x_memset((s), (0x01010101UL * (unsigned char)(c)), \
315 (count)) \
316 : __memset((s), (c), (count)))
317
318/*
319 * find the first occurrence of byte 'c', or 1 past the area if none
320 */
321#define __HAVE_ARCH_MEMSCAN
322extern void *memscan(void *addr, int c, size_t size);
323
324#endif /* __KERNEL__ */
325
326#endif /* ASM_X86__STRING_32_H */
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