| blob | 8b70b0a932621a94ef3f4bc96698fb2ee8a18d2c |
1 /* Copy SIZE bytes from SRC to DEST.
2 For UltraSPARC-III.
3 Copyright (C) 2001, 2003 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by David S. Miller (davem@redhat.com)
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, write to the Free
19 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 02111-1307 USA. */
22 #include <sysdep.h>
24 #define ASI_BLK_P 0xf0
25 #define FPRS_FEF 0x04
26 #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs
27 #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
29 #ifndef XCC
30 #define USE_BPR
31 #define XCC xcc
32 #endif
34 .register %g2,#scratch
35 .register %g3,#scratch
36 .register %g6,#scratch
38 .text
39 .align 32
41 ENTRY(bcopy)
42 sub %o1, %o0, %o4
43 mov %o0, %g4
44 cmp %o4, %o2
45 mov %o1, %o0
46 bgeu,pt %XCC, 100f
47 mov %g4, %o1
48 #ifndef USE_BPR
49 srl %o2, 0, %o2
50 #endif
51 brnz,pn %o2, 220f
52 add %o0, %o2, %o0
53 retl
54 nop
55 END(bcopy)
57 /* Special/non-trivial issues of this code:
58 *
59 * 1) %o5 is preserved from VISEntryHalf to VISExitHalf
60 * 2) Only low 32 FPU registers are used so that only the
61 * lower half of the FPU register set is dirtied by this
62 * code. This is especially important in the kernel.
63 * 3) This code never prefetches cachelines past the end
64 * of the source buffer.
65 *
66 * The cheetah's flexible spine, oversized liver, enlarged heart,
67 * slender muscular body, and claws make it the swiftest hunter
68 * in Africa and the fastest animal on land. Can reach speeds
69 * of up to 2.4GB per second.
70 */
71 .align 32
72 ENTRY(memcpy)
74 100: /* %o0=dst, %o1=src, %o2=len */
75 mov %o0, %g5
76 cmp %o2, 0
77 be,pn %XCC, out
78 218: or %o0, %o1, %o3
79 cmp %o2, 16
80 bleu,a,pn %XCC, small_copy
81 or %o3, %o2, %o3
83 cmp %o2, 256
84 blu,pt %XCC, medium_copy
85 andcc %o3, 0x7, %g0
87 ba,pt %xcc, enter
88 andcc %o0, 0x3f, %g2
90 /* Here len >= 256 and condition codes reflect execution
91 * of "andcc %o0, 0x7, %g2", done by caller.
92 */
93 .align 64
94 enter:
95 /* Is 'dst' already aligned on an 64-byte boundary? */
96 be,pt %XCC, 2f
98 /* Compute abs((dst & 0x3f) - 0x40) into %g2. This is the number
99 * of bytes to copy to make 'dst' 64-byte aligned. We pre-
100 * subtract this from 'len'.
101 */
102 sub %g2, 0x40, %g2
103 sub %g0, %g2, %g2
104 sub %o2, %g2, %o2
106 /* Copy %g2 bytes from src to dst, one byte at a time. */
107 1: ldub [%o1 + 0x00], %o3
108 add %o1, 0x1, %o1
109 add %o0, 0x1, %o0
110 subcc %g2, 0x1, %g2
112 bg,pt %XCC, 1b
113 stb %o3, [%o0 + -1]
115 2: VISEntryHalf
116 and %o1, 0x7, %g1
117 ba,pt %xcc, begin
118 alignaddr %o1, %g0, %o1
120 .align 64
121 begin:
122 prefetch [%o1 + 0x000], #one_read
123 prefetch [%o1 + 0x040], #one_read
124 andn %o2, (0x40 - 1), %o4
125 prefetch [%o1 + 0x080], #one_read
126 prefetch [%o1 + 0x0c0], #one_read
127 ldd [%o1 + 0x000], %f0
128 prefetch [%o1 + 0x100], #one_read
129 ldd [%o1 + 0x008], %f2
130 prefetch [%o1 + 0x140], #one_read
131 ldd [%o1 + 0x010], %f4
132 prefetch [%o1 + 0x180], #one_read
133 faligndata %f0, %f2, %f16
134 ldd [%o1 + 0x018], %f6
135 faligndata %f2, %f4, %f18
136 ldd [%o1 + 0x020], %f8
137 faligndata %f4, %f6, %f20
138 ldd [%o1 + 0x028], %f10
139 faligndata %f6, %f8, %f22
141 ldd [%o1 + 0x030], %f12
142 faligndata %f8, %f10, %f24
143 ldd [%o1 + 0x038], %f14
144 faligndata %f10, %f12, %f26
145 ldd [%o1 + 0x040], %f0
147 sub %o4, 0x80, %o4
148 add %o1, 0x40, %o1
149 ba,pt %xcc, loop
150 srl %o4, 6, %o3
152 .align 64
153 loop:
154 ldd [%o1 + 0x008], %f2
155 faligndata %f12, %f14, %f28
156 ldd [%o1 + 0x010], %f4
157 faligndata %f14, %f0, %f30
158 stda %f16, [%o0] ASI_BLK_P
159 ldd [%o1 + 0x018], %f6
160 faligndata %f0, %f2, %f16
162 ldd [%o1 + 0x020], %f8
163 faligndata %f2, %f4, %f18
164 ldd [%o1 + 0x028], %f10
165 faligndata %f4, %f6, %f20
166 ldd [%o1 + 0x030], %f12
167 faligndata %f6, %f8, %f22
168 ldd [%o1 + 0x038], %f14
169 faligndata %f8, %f10, %f24
171 ldd [%o1 + 0x040], %f0
172 prefetch [%o1 + 0x180], #one_read
173 faligndata %f10, %f12, %f26
174 subcc %o3, 0x01, %o3
175 add %o1, 0x40, %o1
176 bg,pt %XCC, loop
177 add %o0, 0x40, %o0
179 /* Finally we copy the last full 64-byte block. */
180 loopfini:
181 ldd [%o1 + 0x008], %f2
182 faligndata %f12, %f14, %f28
183 ldd [%o1 + 0x010], %f4
184 faligndata %f14, %f0, %f30
185 stda %f16, [%o0] ASI_BLK_P
186 ldd [%o1 + 0x018], %f6
187 faligndata %f0, %f2, %f16
188 ldd [%o1 + 0x020], %f8
189 faligndata %f2, %f4, %f18
190 ldd [%o1 + 0x028], %f10
191 faligndata %f4, %f6, %f20
192 ldd [%o1 + 0x030], %f12
193 faligndata %f6, %f8, %f22
194 ldd [%o1 + 0x038], %f14
195 faligndata %f8, %f10, %f24
196 cmp %g1, 0
197 be,pt %XCC, 1f
198 add %o0, 0x40, %o0
199 ldd [%o1 + 0x040], %f0
200 1: faligndata %f10, %f12, %f26
201 faligndata %f12, %f14, %f28
202 faligndata %f14, %f0, %f30
203 stda %f16, [%o0] ASI_BLK_P
204 add %o0, 0x40, %o0
205 add %o1, 0x40, %o1
206 membar #Sync
208 /* Now we copy the (len modulo 64) bytes at the end.
209 * Note how we borrow the %f0 loaded above.
210 *
211 * Also notice how this code is careful not to perform a
212 * load past the end of the src buffer.
213 */
214 loopend:
215 and %o2, 0x3f, %o2
216 andcc %o2, 0x38, %g2
217 be,pn %XCC, endcruft
218 subcc %g2, 0x8, %g2
219 be,pn %XCC, endcruft
220 cmp %g1, 0
222 be,a,pt %XCC, 1f
223 ldd [%o1 + 0x00], %f0
225 1: ldd [%o1 + 0x08], %f2
226 add %o1, 0x8, %o1
227 sub %o2, 0x8, %o2
228 subcc %g2, 0x8, %g2
229 faligndata %f0, %f2, %f8
230 std %f8, [%o0 + 0x00]
231 be,pn %XCC, endcruft
232 add %o0, 0x8, %o0
233 ldd [%o1 + 0x08], %f0
234 add %o1, 0x8, %o1
235 sub %o2, 0x8, %o2
236 subcc %g2, 0x8, %g2
237 faligndata %f2, %f0, %f8
238 std %f8, [%o0 + 0x00]
239 bne,pn %XCC, 1b
240 add %o0, 0x8, %o0
242 /* If anything is left, we copy it one byte at a time.
243 * Note that %g1 is (src & 0x3) saved above before the
244 * alignaddr was performed.
245 */
246 endcruft:
247 cmp %o2, 0
248 add %o1, %g1, %o1
249 VISExitHalf
250 be,pn %XCC, out
251 sub %o0, %o1, %o3
253 andcc %g1, 0x7, %g0
254 bne,pn %icc, small_copy_unaligned
255 andcc %o2, 0x8, %g0
256 be,pt %icc, 1f
257 nop
258 ldx [%o1], %o5
259 stx %o5, [%o1 + %o3]
260 add %o1, 0x8, %o1
262 1: andcc %o2, 0x4, %g0
263 be,pt %icc, 1f
264 nop
265 lduw [%o1], %o5
266 stw %o5, [%o1 + %o3]
267 add %o1, 0x4, %o1
269 1: andcc %o2, 0x2, %g0
270 be,pt %icc, 1f
271 nop
272 lduh [%o1], %o5
273 sth %o5, [%o1 + %o3]
274 add %o1, 0x2, %o1
276 1: andcc %o2, 0x1, %g0
277 be,pt %icc, out
278 nop
279 ldub [%o1], %o5
280 ba,pt %xcc, out
281 stb %o5, [%o1 + %o3]
283 medium_copy: /* 16 < len <= 64 */
284 bne,pn %XCC, small_copy_unaligned
285 sub %o0, %o1, %o3
287 medium_copy_aligned:
288 andn %o2, 0x7, %o4
289 and %o2, 0x7, %o2
290 1: subcc %o4, 0x8, %o4
291 ldx [%o1], %o5
292 stx %o5, [%o1 + %o3]
293 bgu,pt %XCC, 1b
294 add %o1, 0x8, %o1
295 andcc %o2, 0x4, %g0
296 be,pt %XCC, 1f
297 nop
298 sub %o2, 0x4, %o2
299 lduw [%o1], %o5
300 stw %o5, [%o1 + %o3]
301 add %o1, 0x4, %o1
302 1: cmp %o2, 0
303 be,pt %XCC, out
304 nop
305 ba,pt %xcc, small_copy_unaligned
306 nop
308 small_copy: /* 0 < len <= 16 */
309 andcc %o3, 0x3, %g0
310 bne,pn %XCC, small_copy_unaligned
311 sub %o0, %o1, %o3
313 small_copy_aligned:
314 subcc %o2, 4, %o2
315 lduw [%o1], %g1
316 stw %g1, [%o1 + %o3]
317 bgu,pt %XCC, small_copy_aligned
318 add %o1, 4, %o1
320 out: retl
321 mov %g5, %o0
323 .align 32
324 small_copy_unaligned:
325 subcc %o2, 1, %o2
326 ldub [%o1], %g1
327 stb %g1, [%o1 + %o3]
328 bgu,pt %XCC, small_copy_unaligned
329 add %o1, 1, %o1
330 retl
331 mov %g5, %o0
333 END(memcpy)
335 #define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3) \
336 ldx [%src - offset - 0x20], %t0; \
337 ldx [%src - offset - 0x18], %t1; \
338 ldx [%src - offset - 0x10], %t2; \
339 ldx [%src - offset - 0x08], %t3; \
340 stw %t0, [%dst - offset - 0x1c]; \
341 srlx %t0, 32, %t0; \
342 stw %t0, [%dst - offset - 0x20]; \
343 stw %t1, [%dst - offset - 0x14]; \
344 srlx %t1, 32, %t1; \
345 stw %t1, [%dst - offset - 0x18]; \
346 stw %t2, [%dst - offset - 0x0c]; \
347 srlx %t2, 32, %t2; \
348 stw %t2, [%dst - offset - 0x10]; \
349 stw %t3, [%dst - offset - 0x04]; \
350 srlx %t3, 32, %t3; \
351 stw %t3, [%dst - offset - 0x08];
353 #define RMOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3) \
354 ldx [%src - offset - 0x20], %t0; \
355 ldx [%src - offset - 0x18], %t1; \
356 ldx [%src - offset - 0x10], %t2; \
357 ldx [%src - offset - 0x08], %t3; \
358 stx %t0, [%dst - offset - 0x20]; \
359 stx %t1, [%dst - offset - 0x18]; \
360 stx %t2, [%dst - offset - 0x10]; \
361 stx %t3, [%dst - offset - 0x08]; \
362 ldx [%src - offset - 0x40], %t0; \
363 ldx [%src - offset - 0x38], %t1; \
364 ldx [%src - offset - 0x30], %t2; \
365 ldx [%src - offset - 0x28], %t3; \
366 stx %t0, [%dst - offset - 0x40]; \
367 stx %t1, [%dst - offset - 0x38]; \
368 stx %t2, [%dst - offset - 0x30]; \
369 stx %t3, [%dst - offset - 0x28];
371 #define RMOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
372 ldx [%src + offset + 0x00], %t0; \
373 ldx [%src + offset + 0x08], %t1; \
374 stw %t0, [%dst + offset + 0x04]; \
375 srlx %t0, 32, %t2; \
376 stw %t2, [%dst + offset + 0x00]; \
377 stw %t1, [%dst + offset + 0x0c]; \
378 srlx %t1, 32, %t3; \
379 stw %t3, [%dst + offset + 0x08];
381 #define RMOVE_LASTALIGNCHUNK(src, dst, offset, t0, t1) \
382 ldx [%src + offset + 0x00], %t0; \
383 ldx [%src + offset + 0x08], %t1; \
384 stx %t0, [%dst + offset + 0x00]; \
385 stx %t1, [%dst + offset + 0x08];
387 .align 32
388 228: andcc %o2, 1, %g0 /* IEU1 Group */
389 be,pt %icc, 2f+4 /* CTI */
390 1: ldub [%o1 - 1], %o5 /* LOAD Group */
391 sub %o1, 1, %o1 /* IEU0 */
392 sub %o0, 1, %o0 /* IEU1 */
393 subcc %o2, 1, %o2 /* IEU1 Group */
394 be,pn %xcc, 229f /* CTI */
395 stb %o5, [%o0] /* Store */
396 2: ldub [%o1 - 1], %o5 /* LOAD Group */
397 sub %o0, 2, %o0 /* IEU0 */
398 ldub [%o1 - 2], %g5 /* LOAD Group */
399 sub %o1, 2, %o1 /* IEU0 */
400 subcc %o2, 2, %o2 /* IEU1 Group */
401 stb %o5, [%o0 + 1] /* Store */
402 bne,pt %xcc, 2b /* CTI */
403 stb %g5, [%o0] /* Store */
404 229: retl
405 mov %g4, %o0
407 .align 32
408 ENTRY(memmove)
409 mov %o0, %g5
410 #ifndef USE_BPR
411 srl %o2, 0, %o2 /* IEU1 Group */
412 #endif
413 brz,pn %o2, out /* CTI Group */
414 sub %o0, %o1, %o4 /* IEU0 */
415 cmp %o4, %o2 /* IEU1 Group */
416 bgeu,pt %XCC, 218b /* CTI */
417 mov %o0, %g4 /* IEU0 */
418 add %o0, %o2, %o0 /* IEU0 Group */
419 220: add %o1, %o2, %o1 /* IEU1 */
420 cmp %o2, 15 /* IEU1 Group */
421 bleu,pn %xcc, 228b /* CTI */
422 andcc %o0, 7, %g2 /* IEU1 Group */
423 sub %o0, %o1, %g5 /* IEU0 */
424 andcc %g5, 3, %o5 /* IEU1 Group */
425 bne,pn %xcc, 232f /* CTI */
426 andcc %o1, 3, %g0 /* IEU1 Group */
427 be,a,pt %xcc, 236f /* CTI */
428 andcc %o1, 4, %g0 /* IEU1 Group */
429 andcc %o1, 1, %g0 /* IEU1 Group */
430 be,pn %xcc, 4f /* CTI */
431 andcc %o1, 2, %g0 /* IEU1 Group */
432 ldub [%o1 - 1], %g2 /* Load Group */
433 sub %o1, 1, %o1 /* IEU0 */
434 sub %o0, 1, %o0 /* IEU1 */
435 sub %o2, 1, %o2 /* IEU0 Group */
436 be,pn %xcc, 5f /* CTI Group */
437 stb %g2, [%o0] /* Store */
438 4: lduh [%o1 - 2], %g2 /* Load Group */
439 sub %o1, 2, %o1 /* IEU0 */
440 sub %o0, 2, %o0 /* IEU1 */
441 sub %o2, 2, %o2 /* IEU0 */
442 sth %g2, [%o0] /* Store Group + bubble */
443 5: andcc %o1, 4, %g0 /* IEU1 */
444 236: be,a,pn %xcc, 2f /* CTI */
445 andcc %o2, -128, %g6 /* IEU1 Group */
446 lduw [%o1 - 4], %g5 /* Load Group */
447 sub %o1, 4, %o1 /* IEU0 */
448 sub %o0, 4, %o0 /* IEU1 */
449 sub %o2, 4, %o2 /* IEU0 Group */
450 stw %g5, [%o0] /* Store */
451 andcc %o2, -128, %g6 /* IEU1 Group */
452 2: be,pn %xcc, 235f /* CTI */
453 andcc %o0, 4, %g0 /* IEU1 Group */
454 be,pn %xcc, 282f + 4 /* CTI Group */
455 5: RMOVE_BIGCHUNK(o1, o0, 0x00, g1, g3, g5, o5)
456 RMOVE_BIGCHUNK(o1, o0, 0x20, g1, g3, g5, o5)
457 RMOVE_BIGCHUNK(o1, o0, 0x40, g1, g3, g5, o5)
458 RMOVE_BIGCHUNK(o1, o0, 0x60, g1, g3, g5, o5)
459 subcc %g6, 128, %g6 /* IEU1 Group */
460 sub %o1, 128, %o1 /* IEU0 */
461 bne,pt %xcc, 5b /* CTI */
462 sub %o0, 128, %o0 /* IEU0 Group */
463 235: andcc %o2, 0x70, %g6 /* IEU1 Group */
464 41: be,pn %xcc, 280f /* CTI */
465 andcc %o2, 8, %g0 /* IEU1 Group */
466 /* Clk1 8-( */
467 /* Clk2 8-( */
468 /* Clk3 8-( */
469 /* Clk4 8-( */
470 279: rd %pc, %o5 /* PDU Group */
471 sll %g6, 1, %g5 /* IEU0 Group */
472 sub %o1, %g6, %o1 /* IEU1 */
473 sub %o5, %g5, %o5 /* IEU0 Group */
474 jmpl %o5 + %lo(280f - 279b), %g0 /* CTI Group brk forced*/
475 sub %o0, %g6, %o0 /* IEU0 Group */
476 RMOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g5, o5)
477 RMOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g5, o5)
478 RMOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g5, o5)
479 RMOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g5, o5)
480 RMOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g5, o5)
481 RMOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g5, o5)
482 RMOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g5, o5)
483 280: be,pt %xcc, 281f /* CTI */
484 andcc %o2, 4, %g0 /* IEU1 */
485 ldx [%o1 - 8], %g2 /* Load Group */
486 sub %o0, 8, %o0 /* IEU0 */
487 stw %g2, [%o0 + 4] /* Store Group */
488 sub %o1, 8, %o1 /* IEU1 */
489 srlx %g2, 32, %g2 /* IEU0 Group */
490 stw %g2, [%o0] /* Store */
491 281: be,pt %xcc, 1f /* CTI */
492 andcc %o2, 2, %g0 /* IEU1 Group */
493 lduw [%o1 - 4], %g2 /* Load Group */
494 sub %o1, 4, %o1 /* IEU0 */
495 stw %g2, [%o0 - 4] /* Store Group */
496 sub %o0, 4, %o0 /* IEU0 */
497 1: be,pt %xcc, 1f /* CTI */
498 andcc %o2, 1, %g0 /* IEU1 Group */
499 lduh [%o1 - 2], %g2 /* Load Group */
500 sub %o1, 2, %o1 /* IEU0 */
501 sth %g2, [%o0 - 2] /* Store Group */
502 sub %o0, 2, %o0 /* IEU0 */
503 1: be,pt %xcc, 211f /* CTI */
504 nop /* IEU1 */
505 ldub [%o1 - 1], %g2 /* Load Group */
506 stb %g2, [%o0 - 1] /* Store Group + bubble */
507 211: retl
508 mov %g4, %o0
510 282: RMOVE_BIGALIGNCHUNK(o1, o0, 0x00, g1, g3, g5, o5)
511 RMOVE_BIGALIGNCHUNK(o1, o0, 0x40, g1, g3, g5, o5)
512 subcc %g6, 128, %g6 /* IEU1 Group */
513 sub %o1, 128, %o1 /* IEU0 */
514 bne,pt %xcc, 282b /* CTI */
515 sub %o0, 128, %o0 /* IEU0 Group */
516 andcc %o2, 0x70, %g6 /* IEU1 */
517 be,pn %xcc, 284f /* CTI */
518 andcc %o2, 8, %g0 /* IEU1 Group */
519 /* Clk1 8-( */
520 /* Clk2 8-( */
521 /* Clk3 8-( */
522 /* Clk4 8-( */
523 283: rd %pc, %o5 /* PDU Group */
524 sub %o1, %g6, %o1 /* IEU0 Group */
525 sub %o5, %g6, %o5 /* IEU1 */
526 jmpl %o5 + %lo(284f - 283b), %g0 /* CTI Group brk forced*/
527 sub %o0, %g6, %o0 /* IEU0 Group */
528 RMOVE_LASTALIGNCHUNK(o1, o0, 0x60, g2, g3)
529 RMOVE_LASTALIGNCHUNK(o1, o0, 0x50, g2, g3)
530 RMOVE_LASTALIGNCHUNK(o1, o0, 0x40, g2, g3)
531 RMOVE_LASTALIGNCHUNK(o1, o0, 0x30, g2, g3)
532 RMOVE_LASTALIGNCHUNK(o1, o0, 0x20, g2, g3)
533 RMOVE_LASTALIGNCHUNK(o1, o0, 0x10, g2, g3)
534 RMOVE_LASTALIGNCHUNK(o1, o0, 0x00, g2, g3)
535 284: be,pt %xcc, 285f /* CTI Group */
536 andcc %o2, 4, %g0 /* IEU1 */
537 ldx [%o1 - 8], %g2 /* Load Group */
538 sub %o0, 8, %o0 /* IEU0 */
539 sub %o1, 8, %o1 /* IEU0 Group */
540 stx %g2, [%o0] /* Store */
541 285: be,pt %xcc, 1f /* CTI */
542 andcc %o2, 2, %g0 /* IEU1 Group */
543 lduw [%o1 - 4], %g2 /* Load Group */
544 sub %o0, 4, %o0 /* IEU0 */
545 sub %o1, 4, %o1 /* IEU0 Group */
546 stw %g2, [%o0] /* Store */
547 1: be,pt %xcc, 1f /* CTI */
548 andcc %o2, 1, %g0 /* IEU1 Group */
549 lduh [%o1 - 2], %g2 /* Load Group */
550 sub %o0, 2, %o0 /* IEU0 */
551 sub %o1, 2, %o1 /* IEU0 Group */
552 sth %g2, [%o0] /* Store */
553 1: be,pt %xcc, 1f /* CTI */
554 nop /* IEU0 Group */
555 ldub [%o1 - 1], %g2 /* Load Group */
556 stb %g2, [%o0 - 1] /* Store Group + bubble */
557 1: retl
558 mov %g4, %o0
560 232: brz,pt %g2, 2f /* CTI Group */
561 sub %o2, %g2, %o2 /* IEU0 Group */
562 1: ldub [%o1 - 1], %g5 /* Load Group */
563 sub %o1, 1, %o1 /* IEU0 */
564 sub %o0, 1, %o0 /* IEU1 */
565 subcc %g2, 1, %g2 /* IEU1 Group */
566 bne,pt %xcc, 1b /* CTI */
567 stb %g5, [%o0] /* Store */
568 2: andn %o2, 7, %g5 /* IEU0 Group */
569 and %o2, 7, %o2 /* IEU1 */
570 fmovd %f0, %f2 /* FPU */
571 alignaddr %o1, %g0, %g1 /* GRU Group */
572 ldd [%g1], %f4 /* Load Group */
573 1: ldd [%g1 - 8], %f6 /* Load Group */
574 sub %g1, 8, %g1 /* IEU0 Group */
575 subcc %g5, 8, %g5 /* IEU1 */
576 faligndata %f6, %f4, %f0 /* GRU Group */
577 std %f0, [%o0 - 8] /* Store */
578 sub %o1, 8, %o1 /* IEU0 Group */
579 be,pn %xcc, 233f /* CTI */
580 sub %o0, 8, %o0 /* IEU1 */
581 ldd [%g1 - 8], %f4 /* Load Group */
582 sub %g1, 8, %g1 /* IEU0 */
583 subcc %g5, 8, %g5 /* IEU1 */
584 faligndata %f4, %f6, %f0 /* GRU Group */
585 std %f0, [%o0 - 8] /* Store */
586 sub %o1, 8, %o1 /* IEU0 */
587 bne,pn %xcc, 1b /* CTI Group */
588 sub %o0, 8, %o0 /* IEU0 */
589 233: brz,pn %o2, 234f /* CTI Group */
590 nop /* IEU0 */
591 237: ldub [%o1 - 1], %g5 /* LOAD */
592 sub %o1, 1, %o1 /* IEU0 */
593 sub %o0, 1, %o0 /* IEU1 */
594 subcc %o2, 1, %o2 /* IEU1 */
595 bne,pt %xcc, 237b /* CTI */
596 stb %g5, [%o0] /* Store Group */
597 234: wr %g0, FPRS_FEF, %fprs
598 retl
599 mov %g4, %o0
600 END(memmove)
602 #ifdef USE_BPR
603 weak_alias(memcpy, __align_cpy_1)
604 weak_alias(memcpy, __align_cpy_2)
605 weak_alias(memcpy, __align_cpy_4)
606 weak_alias(memcpy, __align_cpy_8)
607 weak_alias(memcpy, __align_cpy_16)
608 #endif
609 libc_hidden_builtin_def (memcpy)
610 libc_hidden_builtin_def (memmove)