1 /* SPDX-License-Identifier: GPL-2.0-only */ !! 1 /* memcpy.S: Sparc optimized memcpy and memmove code
2 /* !! 2 * Hand optimized from GNU libc's memcpy and memmove
3 * Copyright (c) 2012-2021, Arm Limited. !! 3 * Copyright (C) 1991,1996 Free Software Foundation
4 * !! 4 * Copyright (C) 1995 Linus Torvalds (Linus.Torvalds@helsinki.fi)
5 * Adapted from the original at: !! 5 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
6 * https://github.com/ARM-software/optimized-r !! 6 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
>> 7 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */ 8 */
8 9
9 #include <linux/linkage.h> !! 10 #include <asm/export.h>
10 #include <asm/assembler.h> !! 11 #define FUNC(x) \
>> 12 .globl x; \
>> 13 .type x,@function; \
>> 14 .align 4; \
>> 15 x:
>> 16
>> 17 /* Both these macros have to start with exactly the same insn */
>> 18 #define MOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
>> 19 ldd [%src + (offset) + 0x00], %t0; \
>> 20 ldd [%src + (offset) + 0x08], %t2; \
>> 21 ldd [%src + (offset) + 0x10], %t4; \
>> 22 ldd [%src + (offset) + 0x18], %t6; \
>> 23 st %t0, [%dst + (offset) + 0x00]; \
>> 24 st %t1, [%dst + (offset) + 0x04]; \
>> 25 st %t2, [%dst + (offset) + 0x08]; \
>> 26 st %t3, [%dst + (offset) + 0x0c]; \
>> 27 st %t4, [%dst + (offset) + 0x10]; \
>> 28 st %t5, [%dst + (offset) + 0x14]; \
>> 29 st %t6, [%dst + (offset) + 0x18]; \
>> 30 st %t7, [%dst + (offset) + 0x1c];
>> 31
>> 32 #define MOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
>> 33 ldd [%src + (offset) + 0x00], %t0; \
>> 34 ldd [%src + (offset) + 0x08], %t2; \
>> 35 ldd [%src + (offset) + 0x10], %t4; \
>> 36 ldd [%src + (offset) + 0x18], %t6; \
>> 37 std %t0, [%dst + (offset) + 0x00]; \
>> 38 std %t2, [%dst + (offset) + 0x08]; \
>> 39 std %t4, [%dst + (offset) + 0x10]; \
>> 40 std %t6, [%dst + (offset) + 0x18];
>> 41
>> 42 #define MOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
>> 43 ldd [%src - (offset) - 0x10], %t0; \
>> 44 ldd [%src - (offset) - 0x08], %t2; \
>> 45 st %t0, [%dst - (offset) - 0x10]; \
>> 46 st %t1, [%dst - (offset) - 0x0c]; \
>> 47 st %t2, [%dst - (offset) - 0x08]; \
>> 48 st %t3, [%dst - (offset) - 0x04];
>> 49
>> 50 #define MOVE_LASTALIGNCHUNK(src, dst, offset, t0, t1, t2, t3) \
>> 51 ldd [%src - (offset) - 0x10], %t0; \
>> 52 ldd [%src - (offset) - 0x08], %t2; \
>> 53 std %t0, [%dst - (offset) - 0x10]; \
>> 54 std %t2, [%dst - (offset) - 0x08];
>> 55
>> 56 #define MOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
>> 57 ldub [%src - (offset) - 0x02], %t0; \
>> 58 ldub [%src - (offset) - 0x01], %t1; \
>> 59 stb %t0, [%dst - (offset) - 0x02]; \
>> 60 stb %t1, [%dst - (offset) - 0x01];
11 61
12 /* Assumptions: !! 62 .text
13 * !! 63 .align 4
14 * ARMv8-a, AArch64, unaligned accesses. <<
15 * <<
16 */ <<
17 <<
18 #define L(label) .L ## label <<
19 <<
20 #define dstin x0 <<
21 #define src x1 <<
22 #define count x2 <<
23 #define dst x3 <<
24 #define srcend x4 <<
25 #define dstend x5 <<
26 #define A_l x6 <<
27 #define A_lw w6 <<
28 #define A_h x7 <<
29 #define B_l x8 <<
30 #define B_lw w8 <<
31 #define B_h x9 <<
32 #define C_l x10 <<
33 #define C_lw w10 <<
34 #define C_h x11 <<
35 #define D_l x12 <<
36 #define D_h x13 <<
37 #define E_l x14 <<
38 #define E_h x15 <<
39 #define F_l x16 <<
40 #define F_h x17 <<
41 #define G_l count <<
42 #define G_h dst <<
43 #define H_l src <<
44 #define H_h srcend <<
45 #define tmp1 x14 <<
46 <<
47 /* This implementation handles overlaps and su <<
48 from a single entry point. It uses unalign <<
49 sequences to keep the code small, simple an <<
50 <<
51 Copies are split into 3 main cases: small c <<
52 copies of up to 128 bytes, and large copies <<
53 check is negligible since it is only requir <<
54 <<
55 Large copies use a software pipelined loop <<
56 The destination pointer is 16-byte aligned <<
57 The loop tail is handled by always copying <<
58 */ <<
59 <<
60 SYM_FUNC_START(__pi_memcpy) <<
61 add srcend, src, count <<
62 add dstend, dstin, count <<
63 cmp count, 128 <<
64 b.hi L(copy_long) <<
65 cmp count, 32 <<
66 b.hi L(copy32_128) <<
67 <<
68 /* Small copies: 0..32 bytes. */ <<
69 cmp count, 16 <<
70 b.lo L(copy16) <<
71 ldp A_l, A_h, [src] <<
72 ldp D_l, D_h, [srcend, -16] <<
73 stp A_l, A_h, [dstin] <<
74 stp D_l, D_h, [dstend, -16] <<
75 ret <<
76 <<
77 /* Copy 8-15 bytes. */ <<
78 L(copy16): <<
79 tbz count, 3, L(copy8) <<
80 ldr A_l, [src] <<
81 ldr A_h, [srcend, -8] <<
82 str A_l, [dstin] <<
83 str A_h, [dstend, -8] <<
84 ret <<
85 <<
86 .p2align 3 <<
87 /* Copy 4-7 bytes. */ <<
88 L(copy8): <<
89 tbz count, 2, L(copy4) <<
90 ldr A_lw, [src] <<
91 ldr B_lw, [srcend, -4] <<
92 str A_lw, [dstin] <<
93 str B_lw, [dstend, -4] <<
94 ret <<
95 <<
96 /* Copy 0..3 bytes using a branchless <<
97 L(copy4): <<
98 cbz count, L(copy0) <<
99 lsr tmp1, count, 1 <<
100 ldrb A_lw, [src] <<
101 ldrb C_lw, [srcend, -1] <<
102 ldrb B_lw, [src, tmp1] <<
103 strb A_lw, [dstin] <<
104 strb B_lw, [dstin, tmp1] <<
105 strb C_lw, [dstend, -1] <<
106 L(copy0): <<
107 ret <<
108 64
109 .p2align 4 !! 65 FUNC(memmove)
110 /* Medium copies: 33..128 bytes. */ !! 66 EXPORT_SYMBOL(memmove)
111 L(copy32_128): !! 67 cmp %o0, %o1
112 ldp A_l, A_h, [src] !! 68 mov %o0, %g7
113 ldp B_l, B_h, [src, 16] !! 69 bleu 9f
114 ldp C_l, C_h, [srcend, -32] !! 70 sub %o0, %o1, %o4
115 ldp D_l, D_h, [srcend, -16] !! 71
116 cmp count, 64 !! 72 add %o1, %o2, %o3
117 b.hi L(copy128) !! 73 cmp %o3, %o0
118 stp A_l, A_h, [dstin] !! 74 bleu 0f
119 stp B_l, B_h, [dstin, 16] !! 75 andcc %o4, 3, %o5
120 stp C_l, C_h, [dstend, -32] !! 76
121 stp D_l, D_h, [dstend, -16] !! 77 add %o1, %o2, %o1
122 ret !! 78 add %o0, %o2, %o0
123 !! 79 sub %o1, 1, %o1
124 .p2align 4 !! 80 sub %o0, 1, %o0
125 /* Copy 65..128 bytes. */ !! 81
126 L(copy128): !! 82 1: /* reverse_bytes */
127 ldp E_l, E_h, [src, 32] !! 83
128 ldp F_l, F_h, [src, 48] !! 84 ldub [%o1], %o4
129 cmp count, 96 !! 85 subcc %o2, 1, %o2
130 b.ls L(copy96) !! 86 stb %o4, [%o0]
131 ldp G_l, G_h, [srcend, -64] !! 87 sub %o1, 1, %o1
132 ldp H_l, H_h, [srcend, -48] !! 88 bne 1b
133 stp G_l, G_h, [dstend, -64] !! 89 sub %o0, 1, %o0
134 stp H_l, H_h, [dstend, -48] !! 90
135 L(copy96): !! 91 retl
136 stp A_l, A_h, [dstin] !! 92 mov %g7, %o0
137 stp B_l, B_h, [dstin, 16] !! 93
138 stp E_l, E_h, [dstin, 32] !! 94 /* NOTE: This code is executed just for the cases,
139 stp F_l, F_h, [dstin, 48] !! 95 where %src (=%o1) & 3 is != 0.
140 stp C_l, C_h, [dstend, -32] !! 96 We need to align it to 4. So, for (%src & 3)
141 stp D_l, D_h, [dstend, -16] !! 97 1 we need to do ldub,lduh
142 ret !! 98 2 lduh
>> 99 3 just ldub
>> 100 so even if it looks weird, the branches
>> 101 are correct here. -jj
>> 102 */
>> 103 78: /* dword_align */
143 104
144 .p2align 4 !! 105 andcc %o1, 1, %g0
145 /* Copy more than 128 bytes. */ !! 106 be 4f
146 L(copy_long): !! 107 andcc %o1, 2, %g0
147 /* Use backwards copy if there is an o !! 108
148 sub tmp1, dstin, src !! 109 ldub [%o1], %g2
149 cbz tmp1, L(copy0) !! 110 add %o1, 1, %o1
150 cmp tmp1, count !! 111 stb %g2, [%o0]
151 b.lo L(copy_long_backwards) !! 112 sub %o2, 1, %o2
152 !! 113 bne 3f
153 /* Copy 16 bytes and then align dst to !! 114 add %o0, 1, %o0
154 !! 115 4:
155 ldp D_l, D_h, [src] !! 116 lduh [%o1], %g2
156 and tmp1, dstin, 15 !! 117 add %o1, 2, %o1
157 bic dst, dstin, 15 !! 118 sth %g2, [%o0]
158 sub src, src, tmp1 !! 119 sub %o2, 2, %o2
159 add count, count, tmp1 /* Cou !! 120 b 3f
160 ldp A_l, A_h, [src, 16] !! 121 add %o0, 2, %o0
161 stp D_l, D_h, [dstin] <<
162 ldp B_l, B_h, [src, 32] <<
163 ldp C_l, C_h, [src, 48] <<
164 ldp D_l, D_h, [src, 64]! <<
165 subs count, count, 128 + 16 /* Tes <<
166 b.ls L(copy64_from_end) <<
167 <<
168 L(loop64): <<
169 stp A_l, A_h, [dst, 16] <<
170 ldp A_l, A_h, [src, 16] <<
171 stp B_l, B_h, [dst, 32] <<
172 ldp B_l, B_h, [src, 32] <<
173 stp C_l, C_h, [dst, 48] <<
174 ldp C_l, C_h, [src, 48] <<
175 stp D_l, D_h, [dst, 64]! <<
176 ldp D_l, D_h, [src, 64]! <<
177 subs count, count, 64 <<
178 b.hi L(loop64) <<
179 <<
180 /* Write the last iteration and copy 6 <<
181 L(copy64_from_end): <<
182 ldp E_l, E_h, [srcend, -64] <<
183 stp A_l, A_h, [dst, 16] <<
184 ldp A_l, A_h, [srcend, -48] <<
185 stp B_l, B_h, [dst, 32] <<
186 ldp B_l, B_h, [srcend, -32] <<
187 stp C_l, C_h, [dst, 48] <<
188 ldp C_l, C_h, [srcend, -16] <<
189 stp D_l, D_h, [dst, 64] <<
190 stp E_l, E_h, [dstend, -64] <<
191 stp A_l, A_h, [dstend, -48] <<
192 stp B_l, B_h, [dstend, -32] <<
193 stp C_l, C_h, [dstend, -16] <<
194 ret <<
195 122
196 .p2align 4 !! 123 FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
>> 124 EXPORT_SYMBOL(memcpy)
197 125
198 /* Large backwards copy for overlappin !! 126 sub %o0, %o1, %o4
199 Copy 16 bytes and then align dst to !! 127 mov %o0, %g7
200 L(copy_long_backwards): !! 128 9:
201 ldp D_l, D_h, [srcend, -16] !! 129 andcc %o4, 3, %o5
202 and tmp1, dstend, 15 !! 130 0:
203 sub srcend, srcend, tmp1 !! 131 bne 86f
204 sub count, count, tmp1 !! 132 cmp %o2, 15
205 ldp A_l, A_h, [srcend, -16] !! 133
206 stp D_l, D_h, [dstend, -16] !! 134 bleu 90f
207 ldp B_l, B_h, [srcend, -32] !! 135 andcc %o1, 3, %g0
208 ldp C_l, C_h, [srcend, -48] !! 136
209 ldp D_l, D_h, [srcend, -64]! !! 137 bne 78b
210 sub dstend, dstend, tmp1 !! 138 3:
211 subs count, count, 128 !! 139 andcc %o1, 4, %g0
212 b.ls L(copy64_from_start) !! 140
213 !! 141 be 2f
214 L(loop64_backwards): !! 142 mov %o2, %g1
215 stp A_l, A_h, [dstend, -16] !! 143
216 ldp A_l, A_h, [srcend, -16] !! 144 ld [%o1], %o4
217 stp B_l, B_h, [dstend, -32] !! 145 sub %g1, 4, %g1
218 ldp B_l, B_h, [srcend, -32] !! 146 st %o4, [%o0]
219 stp C_l, C_h, [dstend, -48] !! 147 add %o1, 4, %o1
220 ldp C_l, C_h, [srcend, -48] !! 148 add %o0, 4, %o0
221 stp D_l, D_h, [dstend, -64]! !! 149 2:
222 ldp D_l, D_h, [srcend, -64]! !! 150 andcc %g1, 0xffffff80, %g0
223 subs count, count, 64 !! 151 be 3f
224 b.hi L(loop64_backwards) !! 152 andcc %o0, 4, %g0
225 !! 153
226 /* Write the last iteration and copy 6 !! 154 be 82f + 4
227 L(copy64_from_start): !! 155 5:
228 ldp G_l, G_h, [src, 48] !! 156 MOVE_BIGCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
229 stp A_l, A_h, [dstend, -16] !! 157 MOVE_BIGCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
230 ldp A_l, A_h, [src, 32] !! 158 MOVE_BIGCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
231 stp B_l, B_h, [dstend, -32] !! 159 MOVE_BIGCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
232 ldp B_l, B_h, [src, 16] !! 160 sub %g1, 128, %g1
233 stp C_l, C_h, [dstend, -48] !! 161 add %o1, 128, %o1
234 ldp C_l, C_h, [src] !! 162 cmp %g1, 128
235 stp D_l, D_h, [dstend, -64] !! 163 bge 5b
236 stp G_l, G_h, [dstin, 48] !! 164 add %o0, 128, %o0
237 stp A_l, A_h, [dstin, 32] !! 165 3:
238 stp B_l, B_h, [dstin, 16] !! 166 andcc %g1, 0x70, %g4
239 stp C_l, C_h, [dstin] !! 167 be 80f
>> 168 andcc %g1, 8, %g0
>> 169
>> 170 sethi %hi(80f), %o5
>> 171 srl %g4, 1, %o4
>> 172 add %g4, %o4, %o4
>> 173 add %o1, %g4, %o1
>> 174 sub %o5, %o4, %o5
>> 175 jmpl %o5 + %lo(80f), %g0
>> 176 add %o0, %g4, %o0
>> 177
>> 178 79: /* memcpy_table */
>> 179
>> 180 MOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
>> 181 MOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
>> 182 MOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
>> 183 MOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
>> 184 MOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
>> 185 MOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
>> 186 MOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
>> 187
>> 188 80: /* memcpy_table_end */
>> 189 be 81f
>> 190 andcc %g1, 4, %g0
>> 191
>> 192 ldd [%o1], %g2
>> 193 add %o0, 8, %o0
>> 194 st %g2, [%o0 - 0x08]
>> 195 add %o1, 8, %o1
>> 196 st %g3, [%o0 - 0x04]
>> 197
>> 198 81: /* memcpy_last7 */
>> 199
>> 200 be 1f
>> 201 andcc %g1, 2, %g0
>> 202
>> 203 ld [%o1], %g2
>> 204 add %o1, 4, %o1
>> 205 st %g2, [%o0]
>> 206 add %o0, 4, %o0
>> 207 1:
>> 208 be 1f
>> 209 andcc %g1, 1, %g0
>> 210
>> 211 lduh [%o1], %g2
>> 212 add %o1, 2, %o1
>> 213 sth %g2, [%o0]
>> 214 add %o0, 2, %o0
>> 215 1:
>> 216 be 1f
>> 217 nop
>> 218
>> 219 ldub [%o1], %g2
>> 220 stb %g2, [%o0]
>> 221 1:
>> 222 retl
>> 223 mov %g7, %o0
>> 224
>> 225 82: /* ldd_std */
>> 226 MOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
>> 227 MOVE_BIGALIGNCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
>> 228 MOVE_BIGALIGNCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
>> 229 MOVE_BIGALIGNCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
>> 230 subcc %g1, 128, %g1
>> 231 add %o1, 128, %o1
>> 232 cmp %g1, 128
>> 233 bge 82b
>> 234 add %o0, 128, %o0
>> 235
>> 236 andcc %g1, 0x70, %g4
>> 237 be 84f
>> 238 andcc %g1, 8, %g0
>> 239
>> 240 sethi %hi(84f), %o5
>> 241 add %o1, %g4, %o1
>> 242 sub %o5, %g4, %o5
>> 243 jmpl %o5 + %lo(84f), %g0
>> 244 add %o0, %g4, %o0
>> 245
>> 246 83: /* amemcpy_table */
>> 247
>> 248 MOVE_LASTALIGNCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
>> 249 MOVE_LASTALIGNCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
>> 250 MOVE_LASTALIGNCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
>> 251 MOVE_LASTALIGNCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
>> 252 MOVE_LASTALIGNCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
>> 253 MOVE_LASTALIGNCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
>> 254 MOVE_LASTALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
>> 255
>> 256 84: /* amemcpy_table_end */
>> 257 be 85f
>> 258 andcc %g1, 4, %g0
>> 259
>> 260 ldd [%o1], %g2
>> 261 add %o0, 8, %o0
>> 262 std %g2, [%o0 - 0x08]
>> 263 add %o1, 8, %o1
>> 264 85: /* amemcpy_last7 */
>> 265 be 1f
>> 266 andcc %g1, 2, %g0
>> 267
>> 268 ld [%o1], %g2
>> 269 add %o1, 4, %o1
>> 270 st %g2, [%o0]
>> 271 add %o0, 4, %o0
>> 272 1:
>> 273 be 1f
>> 274 andcc %g1, 1, %g0
>> 275
>> 276 lduh [%o1], %g2
>> 277 add %o1, 2, %o1
>> 278 sth %g2, [%o0]
>> 279 add %o0, 2, %o0
>> 280 1:
>> 281 be 1f
>> 282 nop
>> 283
>> 284 ldub [%o1], %g2
>> 285 stb %g2, [%o0]
>> 286 1:
>> 287 retl
>> 288 mov %g7, %o0
>> 289
>> 290 86: /* non_aligned */
>> 291 cmp %o2, 6
>> 292 bleu 88f
>> 293 nop
>> 294
>> 295 save %sp, -96, %sp
>> 296 andcc %i0, 3, %g0
>> 297 be 61f
>> 298 andcc %i0, 1, %g0
>> 299 be 60f
>> 300 andcc %i0, 2, %g0
>> 301
>> 302 ldub [%i1], %g5
>> 303 add %i1, 1, %i1
>> 304 stb %g5, [%i0]
>> 305 sub %i2, 1, %i2
>> 306 bne 61f
>> 307 add %i0, 1, %i0
>> 308 60:
>> 309 ldub [%i1], %g3
>> 310 add %i1, 2, %i1
>> 311 stb %g3, [%i0]
>> 312 sub %i2, 2, %i2
>> 313 ldub [%i1 - 1], %g3
>> 314 add %i0, 2, %i0
>> 315 stb %g3, [%i0 - 1]
>> 316 61:
>> 317 and %i1, 3, %g2
>> 318 and %i2, 0xc, %g3
>> 319 and %i1, -4, %i1
>> 320 cmp %g3, 4
>> 321 sll %g2, 3, %g4
>> 322 mov 32, %g2
>> 323 be 4f
>> 324 sub %g2, %g4, %l0
>> 325
>> 326 blu 3f
>> 327 cmp %g3, 0x8
>> 328
>> 329 be 2f
>> 330 srl %i2, 2, %g3
>> 331
>> 332 ld [%i1], %i3
>> 333 add %i0, -8, %i0
>> 334 ld [%i1 + 4], %i4
>> 335 b 8f
>> 336 add %g3, 1, %g3
>> 337 2:
>> 338 ld [%i1], %i4
>> 339 add %i0, -12, %i0
>> 340 ld [%i1 + 4], %i5
>> 341 add %g3, 2, %g3
>> 342 b 9f
>> 343 add %i1, -4, %i1
>> 344 3:
>> 345 ld [%i1], %g1
>> 346 add %i0, -4, %i0
>> 347 ld [%i1 + 4], %i3
>> 348 srl %i2, 2, %g3
>> 349 b 7f
>> 350 add %i1, 4, %i1
>> 351 4:
>> 352 ld [%i1], %i5
>> 353 cmp %i2, 7
>> 354 ld [%i1 + 4], %g1
>> 355 srl %i2, 2, %g3
>> 356 bleu 10f
>> 357 add %i1, 8, %i1
>> 358
>> 359 ld [%i1], %i3
>> 360 add %g3, -1, %g3
>> 361 5:
>> 362 sll %i5, %g4, %g2
>> 363 srl %g1, %l0, %g5
>> 364 or %g2, %g5, %g2
>> 365 st %g2, [%i0]
>> 366 7:
>> 367 ld [%i1 + 4], %i4
>> 368 sll %g1, %g4, %g2
>> 369 srl %i3, %l0, %g5
>> 370 or %g2, %g5, %g2
>> 371 st %g2, [%i0 + 4]
>> 372 8:
>> 373 ld [%i1 + 8], %i5
>> 374 sll %i3, %g4, %g2
>> 375 srl %i4, %l0, %g5
>> 376 or %g2, %g5, %g2
>> 377 st %g2, [%i0 + 8]
>> 378 9:
>> 379 ld [%i1 + 12], %g1
>> 380 sll %i4, %g4, %g2
>> 381 srl %i5, %l0, %g5
>> 382 addcc %g3, -4, %g3
>> 383 or %g2, %g5, %g2
>> 384 add %i1, 16, %i1
>> 385 st %g2, [%i0 + 12]
>> 386 add %i0, 16, %i0
>> 387 bne,a 5b
>> 388 ld [%i1], %i3
>> 389 10:
>> 390 sll %i5, %g4, %g2
>> 391 srl %g1, %l0, %g5
>> 392 srl %l0, 3, %g3
>> 393 or %g2, %g5, %g2
>> 394 sub %i1, %g3, %i1
>> 395 andcc %i2, 2, %g0
>> 396 st %g2, [%i0]
>> 397 be 1f
>> 398 andcc %i2, 1, %g0
>> 399
>> 400 ldub [%i1], %g2
>> 401 add %i1, 2, %i1
>> 402 stb %g2, [%i0 + 4]
>> 403 add %i0, 2, %i0
>> 404 ldub [%i1 - 1], %g2
>> 405 stb %g2, [%i0 + 3]
>> 406 1:
>> 407 be 1f
>> 408 nop
>> 409 ldub [%i1], %g2
>> 410 stb %g2, [%i0 + 4]
>> 411 1:
240 ret 412 ret
241 SYM_FUNC_END(__pi_memcpy) !! 413 restore %g7, %g0, %o0
242 414
243 SYM_FUNC_ALIAS(__memcpy, __pi_memcpy) !! 415 88: /* short_end */
244 EXPORT_SYMBOL(__memcpy) <<
245 SYM_FUNC_ALIAS_WEAK(memcpy, __memcpy) <<
246 EXPORT_SYMBOL(memcpy) <<
247 416
248 SYM_FUNC_ALIAS(__pi_memmove, __pi_memcpy) !! 417 and %o2, 0xe, %o3
249 !! 418 20:
250 SYM_FUNC_ALIAS(__memmove, __pi_memmove) !! 419 sethi %hi(89f), %o5
251 EXPORT_SYMBOL(__memmove) !! 420 sll %o3, 3, %o4
252 SYM_FUNC_ALIAS_WEAK(memmove, __memmove) !! 421 add %o0, %o3, %o0
253 EXPORT_SYMBOL(memmove) !! 422 sub %o5, %o4, %o5
>> 423 add %o1, %o3, %o1
>> 424 jmpl %o5 + %lo(89f), %g0
>> 425 andcc %o2, 1, %g0
>> 426
>> 427 MOVE_SHORTCHUNK(o1, o0, 0x0c, g2, g3)
>> 428 MOVE_SHORTCHUNK(o1, o0, 0x0a, g2, g3)
>> 429 MOVE_SHORTCHUNK(o1, o0, 0x08, g2, g3)
>> 430 MOVE_SHORTCHUNK(o1, o0, 0x06, g2, g3)
>> 431 MOVE_SHORTCHUNK(o1, o0, 0x04, g2, g3)
>> 432 MOVE_SHORTCHUNK(o1, o0, 0x02, g2, g3)
>> 433 MOVE_SHORTCHUNK(o1, o0, 0x00, g2, g3)
>> 434
>> 435 89: /* short_table_end */
>> 436
>> 437 be 1f
>> 438 nop
>> 439
>> 440 ldub [%o1], %g2
>> 441 stb %g2, [%o0]
>> 442 1:
>> 443 retl
>> 444 mov %g7, %o0
>> 445
>> 446 90: /* short_aligned_end */
>> 447 bne 88b
>> 448 andcc %o2, 8, %g0
>> 449
>> 450 be 1f
>> 451 andcc %o2, 4, %g0
>> 452
>> 453 ld [%o1 + 0x00], %g2
>> 454 ld [%o1 + 0x04], %g3
>> 455 add %o1, 8, %o1
>> 456 st %g2, [%o0 + 0x00]
>> 457 st %g3, [%o0 + 0x04]
>> 458 add %o0, 8, %o0
>> 459 1:
>> 460 b 81b
>> 461 mov %o2, %g1
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