ia64/linux-2.6.18-xen.hg

view arch/arm26/lib/memcpy.S @ 647:a5bb490065f6

Fix the build after public header sync.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Aug 13 14:01:49 2008 +0100 (2008-08-13)
parents 831230e53067
children
line source
1 /*
2 * linux/arch/arm26/lib/memcpy.S
3 *
4 * Copyright (C) 1995-1999 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * ASM optimised string functions
11 */
12 #include <linux/linkage.h>
13 #include <asm/assembler.h>
15 .text
17 #define ENTER \
18 mov ip,sp ;\
19 stmfd sp!,{r4-r9,fp,ip,lr,pc} ;\
20 sub fp,ip,#4
22 #define EXIT \
23 LOADREGS(ea, fp, {r4 - r9, fp, sp, pc})
25 #define EXITEQ \
26 LOADREGS(eqea, fp, {r4 - r9, fp, sp, pc})
28 /*
29 * Prototype: void memcpy(void *to,const void *from,unsigned long n);
30 * ARM3: cant use memcopy here!!!
31 */
32 ENTRY(memcpy)
33 ENTRY(memmove)
34 ENTER
35 cmp r1, r0
36 bcc 19f
37 subs r2, r2, #4
38 blt 6f
39 ands ip, r0, #3
40 bne 7f
41 ands ip, r1, #3
42 bne 8f
44 1: subs r2, r2, #8
45 blt 5f
46 subs r2, r2, #0x14
47 blt 3f
48 2: ldmia r1!,{r3 - r9, ip}
49 stmia r0!,{r3 - r9, ip}
50 subs r2, r2, #32
51 bge 2b
52 cmn r2, #16
53 ldmgeia r1!, {r3 - r6}
54 stmgeia r0!, {r3 - r6}
55 subge r2, r2, #0x10
56 3: adds r2, r2, #0x14
57 4: ldmgeia r1!, {r3 - r5}
58 stmgeia r0!, {r3 - r5}
59 subges r2, r2, #12
60 bge 4b
61 5: adds r2, r2, #8
62 blt 6f
63 subs r2, r2, #4
64 ldrlt r3, [r1], #4
65 ldmgeia r1!, {r4, r5}
66 strlt r3, [r0], #4
67 stmgeia r0!, {r4, r5}
68 subge r2, r2, #4
70 6: adds r2, r2, #4
71 EXITEQ
72 cmp r2, #2
73 ldrb r3, [r1], #1
74 ldrgeb r4, [r1], #1
75 ldrgtb r5, [r1], #1
76 strb r3, [r0], #1
77 strgeb r4, [r0], #1
78 strgtb r5, [r0], #1
79 EXIT
81 7: rsb ip, ip, #4
82 cmp ip, #2
83 ldrb r3, [r1], #1
84 ldrgeb r4, [r1], #1
85 ldrgtb r5, [r1], #1
86 strb r3, [r0], #1
87 strgeb r4, [r0], #1
88 strgtb r5, [r0], #1
89 subs r2, r2, ip
90 blt 6b
91 ands ip, r1, #3
92 beq 1b
94 8: bic r1, r1, #3
95 ldr r7, [r1], #4
96 cmp ip, #2
97 bgt 15f
98 beq 11f
99 cmp r2, #12
100 blt 10f
101 sub r2, r2, #12
102 9: mov r3, r7, pull #8
103 ldmia r1!, {r4 - r7}
104 orr r3, r3, r4, push #24
105 mov r4, r4, pull #8
106 orr r4, r4, r5, push #24
107 mov r5, r5, pull #8
108 orr r5, r5, r6, push #24
109 mov r6, r6, pull #8
110 orr r6, r6, r7, push #24
111 stmia r0!, {r3 - r6}
112 subs r2, r2, #16
113 bge 9b
114 adds r2, r2, #12
115 blt 100f
116 10: mov r3, r7, pull #8
117 ldr r7, [r1], #4
118 subs r2, r2, #4
119 orr r3, r3, r7, push #24
120 str r3, [r0], #4
121 bge 10b
122 100: sub r1, r1, #3
123 b 6b
125 11: cmp r2, #12
126 blt 13f /* */
127 sub r2, r2, #12
128 12: mov r3, r7, pull #16
129 ldmia r1!, {r4 - r7}
130 orr r3, r3, r4, push #16
131 mov r4, r4, pull #16
132 orr r4, r4, r5, push #16
133 mov r5, r5, pull #16
134 orr r5, r5, r6, push #16
135 mov r6, r6, pull #16
136 orr r6, r6, r7, push #16
137 stmia r0!, {r3 - r6}
138 subs r2, r2, #16
139 bge 12b
140 adds r2, r2, #12
141 blt 14f
142 13: mov r3, r7, pull #16
143 ldr r7, [r1], #4
144 subs r2, r2, #4
145 orr r3, r3, r7, push #16
146 str r3, [r0], #4
147 bge 13b
148 14: sub r1, r1, #2
149 b 6b
151 15: cmp r2, #12
152 blt 17f
153 sub r2, r2, #12
154 16: mov r3, r7, pull #24
155 ldmia r1!, {r4 - r7}
156 orr r3, r3, r4, push #8
157 mov r4, r4, pull #24
158 orr r4, r4, r5, push #8
159 mov r5, r5, pull #24
160 orr r5, r5, r6, push #8
161 mov r6, r6, pull #24
162 orr r6, r6, r7, push #8
163 stmia r0!, {r3 - r6}
164 subs r2, r2, #16
165 bge 16b
166 adds r2, r2, #12
167 blt 18f
168 17: mov r3, r7, pull #24
169 ldr r7, [r1], #4
170 subs r2, r2, #4
171 orr r3, r3, r7, push #8
172 str r3, [r0], #4
173 bge 17b
174 18: sub r1, r1, #1
175 b 6b
178 19: add r1, r1, r2
179 add r0, r0, r2
180 subs r2, r2, #4
181 blt 24f
182 ands ip, r0, #3
183 bne 25f
184 ands ip, r1, #3
185 bne 26f
187 20: subs r2, r2, #8
188 blt 23f
189 subs r2, r2, #0x14
190 blt 22f
191 21: ldmdb r1!, {r3 - r9, ip}
192 stmdb r0!, {r3 - r9, ip}
193 subs r2, r2, #32
194 bge 21b
195 22: cmn r2, #16
196 ldmgedb r1!, {r3 - r6}
197 stmgedb r0!, {r3 - r6}
198 subge r2, r2, #16
199 adds r2, r2, #20
200 ldmgedb r1!, {r3 - r5}
201 stmgedb r0!, {r3 - r5}
202 subge r2, r2, #12
203 23: adds r2, r2, #8
204 blt 24f
205 subs r2, r2, #4
206 ldrlt r3, [r1, #-4]!
207 ldmgedb r1!, {r4, r5}
208 strlt r3, [r0, #-4]!
209 stmgedb r0!, {r4, r5}
210 subge r2, r2, #4
212 24: adds r2, r2, #4
213 EXITEQ
214 cmp r2, #2
215 ldrb r3, [r1, #-1]!
216 ldrgeb r4, [r1, #-1]!
217 ldrgtb r5, [r1, #-1]!
218 strb r3, [r0, #-1]!
219 strgeb r4, [r0, #-1]!
220 strgtb r5, [r0, #-1]!
221 EXIT
223 25: cmp ip, #2
224 ldrb r3, [r1, #-1]!
225 ldrgeb r4, [r1, #-1]!
226 ldrgtb r5, [r1, #-1]!
227 strb r3, [r0, #-1]!
228 strgeb r4, [r0, #-1]!
229 strgtb r5, [r0, #-1]!
230 subs r2, r2, ip
231 blt 24b
232 ands ip, r1, #3
233 beq 20b
235 26: bic r1, r1, #3
236 ldr r3, [r1], #0
237 cmp ip, #2
238 blt 34f
239 beq 30f
240 cmp r2, #12
241 blt 28f
242 sub r2, r2, #12
243 27: mov r7, r3, push #8
244 ldmdb r1!, {r3, r4, r5, r6}
245 orr r7, r7, r6, pull #24
246 mov r6, r6, push #8
247 orr r6, r6, r5, pull #24
248 mov r5, r5, push #8
249 orr r5, r5, r4, pull #24
250 mov r4, r4, push #8
251 orr r4, r4, r3, pull #24
252 stmdb r0!, {r4, r5, r6, r7}
253 subs r2, r2, #16
254 bge 27b
255 adds r2, r2, #12
256 blt 29f
257 28: mov ip, r3, push #8
258 ldr r3, [r1, #-4]!
259 subs r2, r2, #4
260 orr ip, ip, r3, pull #24
261 str ip, [r0, #-4]!
262 bge 28b
263 29: add r1, r1, #3
264 b 24b
266 30: cmp r2, #12
267 blt 32f
268 sub r2, r2, #12
269 31: mov r7, r3, push #16
270 ldmdb r1!, {r3, r4, r5, r6}
271 orr r7, r7, r6, pull #16
272 mov r6, r6, push #16
273 orr r6, r6, r5, pull #16
274 mov r5, r5, push #16
275 orr r5, r5, r4, pull #16
276 mov r4, r4, push #16
277 orr r4, r4, r3, pull #16
278 stmdb r0!, {r4, r5, r6, r7}
279 subs r2, r2, #16
280 bge 31b
281 adds r2, r2, #12
282 blt 33f
283 32: mov ip, r3, push #16
284 ldr r3, [r1, #-4]!
285 subs r2, r2, #4
286 orr ip, ip, r3, pull #16
287 str ip, [r0, #-4]!
288 bge 32b
289 33: add r1, r1, #2
290 b 24b
292 34: cmp r2, #12
293 blt 36f
294 sub r2, r2, #12
295 35: mov r7, r3, push #24
296 ldmdb r1!, {r3, r4, r5, r6}
297 orr r7, r7, r6, pull #8
298 mov r6, r6, push #24
299 orr r6, r6, r5, pull #8
300 mov r5, r5, push #24
301 orr r5, r5, r4, pull #8
302 mov r4, r4, push #24
303 orr r4, r4, r3, pull #8
304 stmdb r0!, {r4, r5, r6, r7}
305 subs r2, r2, #16
306 bge 35b
307 adds r2, r2, #12
308 blt 37f
309 36: mov ip, r3, push #24
310 ldr r3, [r1, #-4]!
311 subs r2, r2, #4
312 orr ip, ip, r3, pull #8
313 str ip, [r0, #-4]!
314 bge 36b
315 37: add r1, r1, #1
316 b 24b
318 .align