git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| bb769ab6 UD |
1 | /* Copy SIZE bytes from SRC to DEST. |
| 2 | For UltraSPARC-III. | |
| 62f29da7 | 3 | Copyright (C) 2001, 2003 Free Software Foundation, Inc. |
| bb769ab6 UD |
4 | This file is part of the GNU C Library. |
| 5 | Contributed by David S. Miller (davem@redhat.com) | |
| 6 | ||
| 7 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
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. | |
| bb769ab6 UD |
11 | |
| 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 | |
| 41bdb6e2 | 15 | Lesser General Public License for more details. |
| bb769ab6 | 16 | |
| 41bdb6e2 AJ |
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. */ | |
| bb769ab6 UD |
21 | |
| 22 | #include <sysdep.h> | |
| 23 | #define ASI_BLK_P 0xf0 | |
| 24 | #define FPRS_FEF 0x04 | |
| 25 | #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs | |
| 26 | #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs | |
| 27 | #define SMALL_COPY_USES_FPU | |
| 28 | ||
| 29 | #ifndef XCC | |
| 30 | #define USE_BPR | |
| 31 | #define XCC xcc | |
| 32 | #endif | |
| 33 | ||
| 34 | .text | |
| 35 | .align 32 | |
| 36 | ||
| 37 | ENTRY(bcopy) | |
| 38 | sub %o1, %o0, %o4 /* IEU0 Group */ | |
| 39 | mov %o0, %g3 /* IEU1 */ | |
| 40 | cmp %o4, %o2 /* IEU1 Group */ | |
| 41 | mov %o1, %o0 /* IEU0 */ | |
| 42 | bgeu,pt %XCC, 100f /* CTI */ | |
| 43 | mov %g3, %o1 /* IEU0 Group */ | |
| 44 | #ifndef USE_BPR | |
| 45 | srl %o2, 0, %o2 /* IEU1 */ | |
| 46 | #endif | |
| 47 | brnz,pn %o2, 220f /* CTI Group */ | |
| 48 | add %o0, %o2, %o0 /* IEU0 */ | |
| 49 | retl | |
| 50 | nop | |
| 51 | END(bcopy) | |
| 52 | ||
| 53 | /* Special/non-trivial issues of this code: | |
| 54 | * | |
| 55 | * 1) %o5 is preserved from VISEntryHalf to VISExitHalf | |
| 56 | * 2) Only low 32 FPU registers are used so that only the | |
| 57 | * lower half of the FPU register set is dirtied by this | |
| 58 | * code. This is especially important in the kernel. | |
| 59 | * 3) This code never prefetches cachelines past the end | |
| 60 | * of the source buffer. | |
| 61 | * | |
| 62 | * The cheetah's flexible spine, oversized liver, enlarged heart, | |
| 63 | * slender muscular body, and claws make it the swiftest hunter | |
| 64 | * in Africa and the fastest animal on land. Can reach speeds | |
| 65 | * of up to 2.4GB per second. | |
| 66 | */ | |
| 67 | .align 32 | |
| 68 | ENTRY(memcpy) | |
| 69 | ||
| 70 | 100: /* %o0=dst, %o1=src, %o2=len */ | |
| 71 | #ifndef __KERNEL__ | |
| 72 | /* Save away original 'dst' for memcpy return value. */ | |
| 73 | mov %o0, %g3 ! A0 Group | |
| 74 | #endif | |
| 75 | /* Anything to copy at all? */ | |
| 76 | cmp %o2, 0 ! A1 | |
| 77 | ble,pn %XCC, 102f ! BR | |
| 78 | ||
| 79 | /* Extremely small copy? */ | |
| 80 | 218: cmp %o2, 31 ! A0 Group | |
| 81 | ble,pn %XCC, 101f ! BR | |
| 82 | ||
| 83 | /* Large enough to use unrolled prefetch loops? */ | |
| 84 | cmp %o2, 0x100 ! A1 | |
| 85 | bge,a,pt %XCC, 103f ! BR Group | |
| 86 | andcc %o0, 0x3f, %g2 ! A0 | |
| 87 | ||
| 88 | ba,pt %XCC, 108f ! BR Group | |
| 89 | andcc %o0, 0x7, %g2 ! A0 | |
| 90 | ||
| 91 | .align 32 | |
| 92 | 101: | |
| 93 | /* Copy %o2 bytes from src to dst, one byte at a time. */ | |
| 94 | ldub [%o1 + 0x00], %o3 ! MS Group | |
| 95 | add %o1, 0x1, %o1 ! A0 | |
| 96 | add %o0, 0x1, %o0 ! A1 | |
| 97 | subcc %o2, 1, %o2 ! A0 Group | |
| 98 | ||
| 99 | bg,pt %XCC, 101b ! BR | |
| 100 | stb %o3, [%o0 + -1] ! MS Group (1-cycle stall) | |
| 101 | ||
| 102 | 102: | |
| 103 | #ifdef __KERNEL__ | |
| 104 | retl ! BR Group (0-4 cycle stall) | |
| 105 | clr %o0 ! A0 | |
| 106 | #else | |
| 107 | retl ! BR Group (0-4 cycle stall) | |
| 108 | mov %g3, %o0 ! A0 | |
| 109 | #endif | |
| 110 | ||
| 111 | /* Here len >= (6 * 64) and condition codes reflect execution | |
| 112 | * of "andcc %o0, 0x7, %g2", done by caller. | |
| 113 | */ | |
| 114 | .align 64 | |
| 115 | 103: | |
| 116 | /* Is 'dst' already aligned on an 64-byte boundary? */ | |
| 117 | be,pt %XCC, 2f ! BR | |
| 118 | ||
| 119 | /* Compute abs((dst & 0x3f) - 0x40) into %g2. This is the number | |
| 120 | * of bytes to copy to make 'dst' 64-byte aligned. We pre- | |
| 121 | * subtract this from 'len'. | |
| 122 | */ | |
| 123 | sub %g2, 0x40, %g2 ! A0 Group | |
| 124 | sub %g0, %g2, %g2 ! A0 Group | |
| 125 | sub %o2, %g2, %o2 ! A0 Group | |
| 126 | ||
| 127 | /* Copy %g2 bytes from src to dst, one byte at a time. */ | |
| 128 | 1: ldub [%o1 + 0x00], %o3 ! MS (Group) | |
| 129 | add %o1, 0x1, %o1 ! A1 | |
| 130 | add %o0, 0x1, %o0 ! A0 Group | |
| 131 | subcc %g2, 0x1, %g2 ! A1 | |
| 132 | ||
| 133 | bg,pt %XCC, 1b ! BR Group | |
| 134 | stb %o3, [%o0 + -1] ! MS Group | |
| 135 | ||
| 136 | 2: VISEntryHalf ! MS+MS | |
| 137 | and %o1, 0x7, %g1 ! A1 | |
| 138 | ba,pt %XCC, 104f ! BR | |
| 139 | alignaddr %o1, %g0, %o1 ! MS (Break-after) | |
| 140 | ||
| 141 | .align 64 | |
| 142 | 104: | |
| 143 | prefetch [%o1 + 0x000], #one_read ! MS Group1 | |
| 144 | prefetch [%o1 + 0x040], #one_read ! MS Group2 | |
| 145 | andn %o2, (0x40 - 1), %o4 ! A0 | |
| 146 | prefetch [%o1 + 0x080], #one_read ! MS Group3 | |
| 147 | cmp %o4, 0x140 ! A0 | |
| 148 | prefetch [%o1 + 0x0c0], #one_read ! MS Group4 | |
| 149 | ldd [%o1 + 0x000], %f0 ! MS Group5 (%f0 results at G8) | |
| 150 | bge,a,pt %XCC, 1f ! BR | |
| 151 | ||
| 152 | prefetch [%o1 + 0x100], #one_read ! MS Group6 | |
| 153 | 1: ldd [%o1 + 0x008], %f2 ! AX (%f2 results at G9) | |
| 154 | cmp %o4, 0x180 ! A1 | |
| 155 | bge,a,pt %XCC, 1f ! BR | |
| 156 | prefetch [%o1 + 0x140], #one_read ! MS Group7 | |
| 157 | 1: ldd [%o1 + 0x010], %f4 ! AX (%f4 results at G10) | |
| 158 | cmp %o4, 0x1c0 ! A1 | |
| 159 | bge,a,pt %XCC, 1f ! BR | |
| 160 | ||
| 161 | prefetch [%o1 + 0x180], #one_read ! MS Group8 | |
| 162 | 1: faligndata %f0, %f2, %f16 ! FGA Group9 (%f16 at G12) | |
| 163 | ldd [%o1 + 0x018], %f6 ! AX (%f6 results at G12) | |
| 164 | faligndata %f2, %f4, %f18 ! FGA Group10 (%f18 results at G13) | |
| 165 | ldd [%o1 + 0x020], %f8 ! MS (%f8 results at G13) | |
| 166 | faligndata %f4, %f6, %f20 ! FGA Group12 (1-cycle stall,%f20 at G15) | |
| 167 | ldd [%o1 + 0x028], %f10 ! MS (%f10 results at G15) | |
| 168 | faligndata %f6, %f8, %f22 ! FGA Group13 (%f22 results at G16) | |
| 169 | ||
| 170 | ldd [%o1 + 0x030], %f12 ! MS (%f12 results at G16) | |
| 171 | faligndata %f8, %f10, %f24 ! FGA Group15 (1-cycle stall,%f24 at G18) | |
| 172 | ldd [%o1 + 0x038], %f14 ! MS (%f14 results at G18) | |
| 173 | faligndata %f10, %f12, %f26 ! FGA Group16 (%f26 results at G19) | |
| 174 | ldd [%o1 + 0x040], %f0 ! MS (%f0 results at G19) | |
| 175 | ||
| 176 | /* We only use the first loop if len > (7 * 64). */ | |
| 177 | subcc %o4, 0x1c0, %o4 ! A0 Group17 | |
| 178 | bg,pt %XCC, 105f ! BR | |
| 179 | add %o1, 0x40, %o1 ! A1 | |
| 180 | ||
| 181 | add %o4, 0x140, %o4 ! A0 Group18 | |
| 182 | ba,pt %XCC, 106f ! BR | |
| 183 | srl %o4, 6, %o3 ! A0 Group19 | |
| 184 | nop | |
| 185 | nop | |
| 186 | nop | |
| 187 | nop | |
| 188 | nop | |
| 189 | ||
| 190 | nop | |
| 191 | nop | |
| 192 | ||
| 193 | /* This loop performs the copy and queues new prefetches. | |
| 194 | * We drop into the second loop when len <= (5 * 64). Note | |
| 195 | * that this (5 * 64) factor has been subtracted from len | |
| 196 | * already. | |
| 197 | */ | |
| 198 | 105: | |
| 199 | ldd [%o1 + 0x008], %f2 ! MS Group2 (%f2 results at G5) | |
| 200 | faligndata %f12, %f14, %f28 ! FGA (%f28 results at G5) | |
| 201 | ldd [%o1 + 0x010], %f4 ! MS Group3 (%f4 results at G6) | |
| 202 | faligndata %f14, %f0, %f30 ! FGA Group4 (1-cycle stall, %f30 at G7) | |
| 203 | stda %f16, [%o0] ASI_BLK_P ! MS | |
| 204 | ldd [%o1 + 0x018], %f6 ! AX (%f6 results at G7) | |
| 205 | ||
| 206 | faligndata %f0, %f2, %f16 ! FGA Group12 (7-cycle stall) | |
| 207 | ldd [%o1 + 0x020], %f8 ! MS (%f8 results at G15) | |
| 208 | faligndata %f2, %f4, %f18 ! FGA Group13 (%f18 results at G16) | |
| 209 | ldd [%o1 + 0x028], %f10 ! MS (%f10 results at G16) | |
| 210 | faligndata %f4, %f6, %f20 ! FGA Group14 (%f20 results at G17) | |
| 211 | ldd [%o1 + 0x030], %f12 ! MS (%f12 results at G17) | |
| 212 | faligndata %f6, %f8, %f22 ! FGA Group15 (%f22 results at G18) | |
| 213 | ldd [%o1 + 0x038], %f14 ! MS (%f14 results at G18) | |
| 214 | ||
| 215 | faligndata %f8, %f10, %f24 ! FGA Group16 (%f24 results at G19) | |
| 216 | ldd [%o1 + 0x040], %f0 ! AX (%f0 results at G19) | |
| 217 | prefetch [%o1 + 0x180], #one_read ! MS | |
| 218 | faligndata %f10, %f12, %f26 ! FGA Group17 (%f26 results at G20) | |
| 219 | subcc %o4, 0x40, %o4 ! A0 | |
| 220 | add %o1, 0x40, %o1 ! A1 | |
| 221 | bg,pt %XCC, 105b ! BR | |
| 222 | add %o0, 0x40, %o0 ! A0 Group18 | |
| 223 | ||
| 224 | mov 5, %o3 ! A1 | |
| 225 | ||
| 226 | /* This loop performs on the copy, no new prefetches are | |
| 227 | * queued. We do things this way so that we do not perform | |
| 228 | * any spurious prefetches past the end of the src buffer. | |
| 229 | */ | |
| 230 | 106: | |
| 231 | ldd [%o1 + 0x008], %f2 ! MS | |
| 232 | faligndata %f12, %f14, %f28 ! FGA Group2 | |
| 233 | ldd [%o1 + 0x010], %f4 ! MS | |
| 234 | faligndata %f14, %f0, %f30 ! FGA Group4 (1-cycle stall) | |
| 235 | stda %f16, [%o0] ASI_BLK_P ! MS | |
| 236 | ldd [%o1 + 0x018], %f6 ! AX | |
| 237 | faligndata %f0, %f2, %f16 ! FGA Group12 (7-cycle stall) | |
| 238 | ||
| 239 | ldd [%o1 + 0x020], %f8 ! MS | |
| 240 | faligndata %f2, %f4, %f18 ! FGA Group13 | |
| 241 | ldd [%o1 + 0x028], %f10 ! MS | |
| 242 | faligndata %f4, %f6, %f20 ! FGA Group14 | |
| 243 | ldd [%o1 + 0x030], %f12 ! MS | |
| 244 | faligndata %f6, %f8, %f22 ! FGA Group15 | |
| 245 | ldd [%o1 + 0x038], %f14 ! MS | |
| 246 | faligndata %f8, %f10, %f24 ! FGA Group16 | |
| 247 | ||
| 248 | ldd [%o1 + 0x040], %f0 ! AX | |
| 249 | faligndata %f10, %f12, %f26 ! FGA Group17 | |
| 250 | subcc %o3, 0x01, %o3 ! A0 | |
| 251 | add %o1, 0x40, %o1 ! A1 | |
| 252 | bg,pt %XCC, 106b ! BR | |
| 253 | add %o0, 0x40, %o0 ! A0 Group18 | |
| 254 | ||
| 255 | /* Finally we copy the last full 64-byte block. */ | |
| 256 | ldd [%o1 + 0x008], %f2 ! MS | |
| 257 | faligndata %f12, %f14, %f28 ! FGA | |
| 258 | ldd [%o1 + 0x010], %f4 ! MS Group19 | |
| 259 | faligndata %f14, %f0, %f30 ! FGA | |
| 260 | stda %f16, [%o0] ASI_BLK_P ! MS Group20 | |
| 261 | ldd [%o1 + 0x018], %f6 ! AX | |
| 262 | faligndata %f0, %f2, %f16 ! FGA Group11 (7-cycle stall) | |
| 263 | ldd [%o1 + 0x020], %f8 ! MS | |
| 264 | faligndata %f2, %f4, %f18 ! FGA Group12 | |
| 265 | ldd [%o1 + 0x028], %f10 ! MS | |
| 266 | faligndata %f4, %f6, %f20 ! FGA Group13 | |
| 267 | ldd [%o1 + 0x030], %f12 ! MS | |
| 268 | faligndata %f6, %f8, %f22 ! FGA Group14 | |
| 269 | ldd [%o1 + 0x038], %f14 ! MS | |
| 270 | faligndata %f8, %f10, %f24 ! FGA Group15 | |
| 271 | cmp %g1, 0 ! A0 | |
| 272 | be,pt %XCC, 1f ! BR | |
| 273 | add %o0, 0x40, %o0 ! A1 | |
| 274 | ldd [%o1 + 0x040], %f0 ! MS | |
| 275 | 1: faligndata %f10, %f12, %f26 ! FGA Group16 | |
| 276 | faligndata %f12, %f14, %f28 ! FGA Group17 | |
| 277 | faligndata %f14, %f0, %f30 ! FGA Group18 | |
| 278 | stda %f16, [%o0] ASI_BLK_P ! MS | |
| 279 | add %o0, 0x40, %o0 ! A0 | |
| 280 | add %o1, 0x40, %o1 ! A1 | |
| 281 | membar #Sync ! MS Group26 (7-cycle stall) | |
| 282 | ||
| 283 | /* Now we copy the (len modulo 64) bytes at the end. | |
| 284 | * Note how we borrow the %f0 loaded above. | |
| 285 | * | |
| 286 | * Also notice how this code is careful not to perform a | |
| 287 | * load past the end of the src buffer just like similar | |
| 288 | * code found in 'toosmall' processing. | |
| 289 | */ | |
| 290 | and %o2, 0x3f, %o2 ! A0 Group | |
| 291 | andcc %o2, 0x38, %g2 ! A0 Group | |
| 292 | be,pn %XCC, 107f ! BR | |
| 293 | subcc %g2, 0x8, %g2 ! A1 | |
| 294 | be,pn %XCC, 107f ! BR Group | |
| 295 | cmp %g1, 0 ! A0 | |
| 296 | ||
| 297 | be,a,pt %XCC, 1f ! BR Group | |
| 298 | ldd [%o1 + 0x00], %f0 ! MS | |
| 299 | ||
| 300 | 1: ldd [%o1 + 0x08], %f2 ! MS Group | |
| 301 | add %o1, 0x8, %o1 ! A0 | |
| 302 | sub %o2, 0x8, %o2 ! A1 | |
| 303 | subcc %g2, 0x8, %g2 ! A0 Group | |
| 304 | faligndata %f0, %f2, %f8 ! FGA Group | |
| 305 | std %f8, [%o0 + 0x00] ! MS (XXX does it stall here? XXX) | |
| 306 | be,pn %XCC, 107f ! BR | |
| 307 | add %o0, 0x8, %o0 ! A0 | |
| 308 | ldd [%o1 + 0x08], %f0 ! MS Group | |
| 309 | add %o1, 0x8, %o1 ! A0 | |
| 310 | sub %o2, 0x8, %o2 ! A1 | |
| 311 | subcc %g2, 0x8, %g2 ! A0 Group | |
| 312 | faligndata %f2, %f0, %f8 ! FGA | |
| 313 | std %f8, [%o0 + 0x00] ! MS (XXX does it stall here? XXX) | |
| 314 | bne,pn %XCC, 1b ! BR | |
| 315 | add %o0, 0x8, %o0 ! A0 Group | |
| 316 | ||
| 317 | /* If anything is left, we copy it one byte at a time. | |
| 318 | * Note that %g1 is (src & 0x3) saved above before the | |
| 319 | * alignaddr was performed. | |
| 320 | */ | |
| 321 | 107: | |
| 322 | cmp %o2, 0 | |
| 323 | add %o1, %g1, %o1 | |
| 324 | VISExitHalf | |
| 325 | be,pn %XCC, 102b | |
| 326 | nop | |
| 327 | ba,a,pt %XCC, 101b | |
| 328 | ||
| 329 | /* If we get here, then 32 <= len < (6 * 64) */ | |
| 330 | 108: | |
| 331 | ||
| 332 | #ifdef SMALL_COPY_USES_FPU | |
| 333 | ||
| 334 | /* Is 'dst' already aligned on an 8-byte boundary? */ | |
| 335 | be,pt %XCC, 2f ! BR Group | |
| 336 | ||
| 337 | /* Compute abs((dst & 7) - 8) into %g2. This is the number | |
| 338 | * of bytes to copy to make 'dst' 8-byte aligned. We pre- | |
| 339 | * subtract this from 'len'. | |
| 340 | */ | |
| 341 | sub %g2, 0x8, %g2 ! A0 | |
| 342 | sub %g0, %g2, %g2 ! A0 Group (reg-dep) | |
| 343 | sub %o2, %g2, %o2 ! A0 Group (reg-dep) | |
| 344 | ||
| 345 | /* Copy %g2 bytes from src to dst, one byte at a time. */ | |
| 346 | 1: ldub [%o1 + 0x00], %o3 ! MS (Group) (%o3 in 3 cycles) | |
| 347 | add %o1, 0x1, %o1 ! A1 | |
| 348 | add %o0, 0x1, %o0 ! A0 Group | |
| 349 | subcc %g2, 0x1, %g2 ! A1 | |
| 350 | ||
| 351 | bg,pt %XCC, 1b ! BR Group | |
| 352 | stb %o3, [%o0 + -1] ! MS Group | |
| 353 | ||
| 354 | 2: VISEntryHalf ! MS+MS | |
| 355 | ||
| 356 | /* Compute (len - (len % 8)) into %g2. This is guarenteed | |
| 357 | * to be nonzero. | |
| 358 | */ | |
| 359 | andn %o2, 0x7, %g2 ! A0 Group | |
| 360 | ||
| 361 | /* You may read this and believe that it allows reading | |
| 362 | * one 8-byte longword past the end of src. It actually | |
| 363 | * does not, as %g2 is subtracted as loads are done from | |
| 364 | * src, so we always stop before running off the end. | |
| 365 | * Also, we are guarenteed to have at least 0x10 bytes | |
| 366 | * to move here. | |
| 367 | */ | |
| 368 | sub %g2, 0x8, %g2 ! A0 Group (reg-dep) | |
| 369 | alignaddr %o1, %g0, %g1 ! MS (Break-after) | |
| 370 | ldd [%g1 + 0x00], %f0 ! MS Group (1-cycle stall) | |
| 371 | add %g1, 0x8, %g1 ! A0 | |
| 372 | ||
| 373 | 1: ldd [%g1 + 0x00], %f2 ! MS Group | |
| 374 | add %g1, 0x8, %g1 ! A0 | |
| 375 | sub %o2, 0x8, %o2 ! A1 | |
| 376 | subcc %g2, 0x8, %g2 ! A0 Group | |
| 377 | ||
| 378 | faligndata %f0, %f2, %f8 ! FGA Group (1-cycle stall) | |
| 379 | std %f8, [%o0 + 0x00] ! MS Group (2-cycle stall) | |
| 380 | add %o1, 0x8, %o1 ! A0 | |
| 381 | be,pn %XCC, 2f ! BR | |
| 382 | ||
| 383 | add %o0, 0x8, %o0 ! A1 | |
| 384 | ldd [%g1 + 0x00], %f0 ! MS Group | |
| 385 | add %g1, 0x8, %g1 ! A0 | |
| 386 | sub %o2, 0x8, %o2 ! A1 | |
| 387 | ||
| 388 | subcc %g2, 0x8, %g2 ! A0 Group | |
| 389 | faligndata %f2, %f0, %f8 ! FGA Group (1-cycle stall) | |
| 390 | std %f8, [%o0 + 0x00] ! MS Group (2-cycle stall) | |
| 391 | add %o1, 0x8, %o1 ! A0 | |
| 392 | ||
| 393 | bne,pn %XCC, 1b ! BR | |
| 394 | add %o0, 0x8, %o0 ! A1 | |
| 395 | ||
| 396 | /* Nothing left to copy? */ | |
| 397 | 2: cmp %o2, 0 ! A0 Group | |
| 398 | VISExitHalf ! A0+MS | |
| 399 | be,pn %XCC, 102b ! BR Group | |
| 400 | nop ! A0 | |
| 401 | ba,a,pt %XCC, 101b ! BR Group | |
| 402 | ||
| 403 | #else /* !(SMALL_COPY_USES_FPU) */ | |
| 404 | ||
| 405 | xor %o1, %o0, %g2 | |
| 406 | andcc %g2, 0x7, %g0 | |
| 407 | bne,pn %XCC, 101b | |
| 408 | andcc %o1, 0x7, %g2 | |
| 409 | ||
| 410 | be,pt %XCC, 2f | |
| 411 | sub %g2, 0x8, %g2 | |
| 412 | sub %g0, %g2, %g2 | |
| 413 | sub %o2, %g2, %o2 | |
| 414 | ||
| 415 | 1: ldub [%o1 + 0x00], %o3 | |
| 416 | add %o1, 0x1, %o1 | |
| 417 | add %o0, 0x1, %o0 | |
| 418 | subcc %g2, 0x1, %g2 | |
| 419 | bg,pt %XCC, 1b | |
| 420 | stb %o3, [%o0 + -1] | |
| 421 | ||
| 422 | 2: andn %o2, 0x7, %g2 | |
| 423 | sub %o2, %g2, %o2 | |
| 424 | ||
| 425 | 3: ldx [%o1 + 0x00], %o3 | |
| 426 | add %o1, 0x8, %o1 | |
| 427 | add %o0, 0x8, %o0 | |
| 428 | subcc %g2, 0x8, %g2 | |
| 429 | bg,pt %XCC, 3b | |
| 430 | stx %o3, [%o0 + -8] | |
| 431 | ||
| 432 | cmp %o2, 0 | |
| 433 | bne,pn %XCC, 101b | |
| 434 | nop | |
| 435 | ba,a,pt %XCC, 102b | |
| 436 | ||
| 437 | #endif /* !(SMALL_COPY_USES_FPU) */ | |
| 438 | END(memcpy) | |
| 439 | ||
| 440 | #define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3) \ | |
| 441 | ldx [%src - offset - 0x20], %t0; \ | |
| 442 | ldx [%src - offset - 0x18], %t1; \ | |
| 443 | ldx [%src - offset - 0x10], %t2; \ | |
| 444 | ldx [%src - offset - 0x08], %t3; \ | |
| 445 | stw %t0, [%dst - offset - 0x1c]; \ | |
| 446 | srlx %t0, 32, %t0; \ | |
| 447 | stw %t0, [%dst - offset - 0x20]; \ | |
| 448 | stw %t1, [%dst - offset - 0x14]; \ | |
| 449 | srlx %t1, 32, %t1; \ | |
| 450 | stw %t1, [%dst - offset - 0x18]; \ | |
| 451 | stw %t2, [%dst - offset - 0x0c]; \ | |
| 452 | srlx %t2, 32, %t2; \ | |
| 453 | stw %t2, [%dst - offset - 0x10]; \ | |
| 454 | stw %t3, [%dst - offset - 0x04]; \ | |
| 455 | srlx %t3, 32, %t3; \ | |
| 456 | stw %t3, [%dst - offset - 0x08]; | |
| 457 | ||
| 458 | #define RMOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3) \ | |
| 459 | ldx [%src - offset - 0x20], %t0; \ | |
| 460 | ldx [%src - offset - 0x18], %t1; \ | |
| 461 | ldx [%src - offset - 0x10], %t2; \ | |
| 462 | ldx [%src - offset - 0x08], %t3; \ | |
| 463 | stx %t0, [%dst - offset - 0x20]; \ | |
| 464 | stx %t1, [%dst - offset - 0x18]; \ | |
| 465 | stx %t2, [%dst - offset - 0x10]; \ | |
| 466 | stx %t3, [%dst - offset - 0x08]; \ | |
| 467 | ldx [%src - offset - 0x40], %t0; \ | |
| 468 | ldx [%src - offset - 0x38], %t1; \ | |
| 469 | ldx [%src - offset - 0x30], %t2; \ | |
| 470 | ldx [%src - offset - 0x28], %t3; \ | |
| 471 | stx %t0, [%dst - offset - 0x40]; \ | |
| 472 | stx %t1, [%dst - offset - 0x38]; \ | |
| 473 | stx %t2, [%dst - offset - 0x30]; \ | |
| 474 | stx %t3, [%dst - offset - 0x28]; | |
| 475 | ||
| 476 | #define RMOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \ | |
| 477 | ldx [%src + offset + 0x00], %t0; \ | |
| 478 | ldx [%src + offset + 0x08], %t1; \ | |
| 479 | stw %t0, [%dst + offset + 0x04]; \ | |
| 480 | srlx %t0, 32, %t2; \ | |
| 481 | stw %t2, [%dst + offset + 0x00]; \ | |
| 482 | stw %t1, [%dst + offset + 0x0c]; \ | |
| 483 | srlx %t1, 32, %t3; \ | |
| 484 | stw %t3, [%dst + offset + 0x08]; | |
| 485 | ||
| 486 | #define RMOVE_LASTALIGNCHUNK(src, dst, offset, t0, t1) \ | |
| 487 | ldx [%src + offset + 0x00], %t0; \ | |
| 488 | ldx [%src + offset + 0x08], %t1; \ | |
| 489 | stx %t0, [%dst + offset + 0x00]; \ | |
| 490 | stx %t1, [%dst + offset + 0x08]; | |
| 491 | ||
| 492 | .align 32 | |
| 493 | 228: andcc %o2, 1, %g0 /* IEU1 Group */ | |
| 494 | be,pt %icc, 2f+4 /* CTI */ | |
| 495 | 1: ldub [%o1 - 1], %o5 /* LOAD Group */ | |
| 496 | sub %o1, 1, %o1 /* IEU0 */ | |
| 497 | sub %o0, 1, %o0 /* IEU1 */ | |
| 498 | subcc %o2, 1, %o2 /* IEU1 Group */ | |
| 499 | be,pn %xcc, 229f /* CTI */ | |
| 500 | stb %o5, [%o0] /* Store */ | |
| 501 | 2: ldub [%o1 - 1], %o5 /* LOAD Group */ | |
| 502 | sub %o0, 2, %o0 /* IEU0 */ | |
| 503 | ldub [%o1 - 2], %g5 /* LOAD Group */ | |
| 504 | sub %o1, 2, %o1 /* IEU0 */ | |
| 505 | subcc %o2, 2, %o2 /* IEU1 Group */ | |
| 506 | stb %o5, [%o0 + 1] /* Store */ | |
| 507 | bne,pt %xcc, 2b /* CTI */ | |
| 508 | stb %g5, [%o0] /* Store */ | |
| 509 | 229: retl | |
| 510 | mov %g4, %o0 | |
| 511 | ||
| 512 | .align 32 | |
| 513 | ENTRY(memmove) | |
| 514 | mov %o0, %g3 | |
| 515 | #ifndef USE_BPR | |
| 516 | srl %o2, 0, %o2 /* IEU1 Group */ | |
| 517 | #endif | |
| 518 | brz,pn %o2, 102b /* CTI Group */ | |
| 519 | sub %o0, %o1, %o4 /* IEU0 */ | |
| 520 | cmp %o4, %o2 /* IEU1 Group */ | |
| 521 | bgeu,pt %XCC, 218b /* CTI */ | |
| 522 | mov %o0, %g4 /* IEU0 */ | |
| 523 | add %o0, %o2, %o0 /* IEU0 Group */ | |
| 524 | 220: add %o1, %o2, %o1 /* IEU1 */ | |
| 525 | cmp %o2, 15 /* IEU1 Group */ | |
| 526 | bleu,pn %xcc, 228b /* CTI */ | |
| 527 | andcc %o0, 7, %g2 /* IEU1 Group */ | |
| 528 | sub %o0, %o1, %g5 /* IEU0 */ | |
| 529 | andcc %g5, 3, %o5 /* IEU1 Group */ | |
| 530 | bne,pn %xcc, 232f /* CTI */ | |
| 531 | andcc %o1, 3, %g0 /* IEU1 Group */ | |
| 532 | be,a,pt %xcc, 236f /* CTI */ | |
| 533 | andcc %o1, 4, %g0 /* IEU1 Group */ | |
| 534 | andcc %o1, 1, %g0 /* IEU1 Group */ | |
| 535 | be,pn %xcc, 4f /* CTI */ | |
| 536 | andcc %o1, 2, %g0 /* IEU1 Group */ | |
| 537 | ldub [%o1 - 1], %g2 /* Load Group */ | |
| 538 | sub %o1, 1, %o1 /* IEU0 */ | |
| 539 | sub %o0, 1, %o0 /* IEU1 */ | |
| 540 | sub %o2, 1, %o2 /* IEU0 Group */ | |
| 541 | be,pn %xcc, 5f /* CTI Group */ | |
| 542 | stb %g2, [%o0] /* Store */ | |
| 543 | 4: lduh [%o1 - 2], %g2 /* Load Group */ | |
| 544 | sub %o1, 2, %o1 /* IEU0 */ | |
| 545 | sub %o0, 2, %o0 /* IEU1 */ | |
| 546 | sub %o2, 2, %o2 /* IEU0 */ | |
| 547 | sth %g2, [%o0] /* Store Group + bubble */ | |
| 548 | 5: andcc %o1, 4, %g0 /* IEU1 */ | |
| 549 | 236: be,a,pn %xcc, 2f /* CTI */ | |
| 62f29da7 | 550 | andcc %o2, -128, %g6 /* IEU1 Group */ |
| bb769ab6 UD |
551 | lduw [%o1 - 4], %g5 /* Load Group */ |
| 552 | sub %o1, 4, %o1 /* IEU0 */ | |
| 553 | sub %o0, 4, %o0 /* IEU1 */ | |
| 554 | sub %o2, 4, %o2 /* IEU0 Group */ | |
| 555 | stw %g5, [%o0] /* Store */ | |
| 62f29da7 | 556 | andcc %o2, -128, %g6 /* IEU1 Group */ |
| bb769ab6 UD |
557 | 2: be,pn %xcc, 235f /* CTI */ |
| 558 | andcc %o0, 4, %g0 /* IEU1 Group */ | |
| 559 | be,pn %xcc, 282f + 4 /* CTI Group */ | |
| 560 | 5: RMOVE_BIGCHUNK(o1, o0, 0x00, g1, g3, g5, o5) | |
| 561 | RMOVE_BIGCHUNK(o1, o0, 0x20, g1, g3, g5, o5) | |
| 562 | RMOVE_BIGCHUNK(o1, o0, 0x40, g1, g3, g5, o5) | |
| 563 | RMOVE_BIGCHUNK(o1, o0, 0x60, g1, g3, g5, o5) | |
| 62f29da7 | 564 | subcc %g6, 128, %g6 /* IEU1 Group */ |
| bb769ab6 UD |
565 | sub %o1, 128, %o1 /* IEU0 */ |
| 566 | bne,pt %xcc, 5b /* CTI */ | |
| 567 | sub %o0, 128, %o0 /* IEU0 Group */ | |
| 62f29da7 | 568 | 235: andcc %o2, 0x70, %g6 /* IEU1 Group */ |
| bb769ab6 UD |
569 | 41: be,pn %xcc, 280f /* CTI */ |
| 570 | andcc %o2, 8, %g0 /* IEU1 Group */ | |
| 571 | /* Clk1 8-( */ | |
| 572 | /* Clk2 8-( */ | |
| 573 | /* Clk3 8-( */ | |
| 574 | /* Clk4 8-( */ | |
| 575 | 279: rd %pc, %o5 /* PDU Group */ | |
| 62f29da7 UD |
576 | sll %g6, 1, %g5 /* IEU0 Group */ |
| 577 | sub %o1, %g6, %o1 /* IEU1 */ | |
| bb769ab6 UD |
578 | sub %o5, %g5, %o5 /* IEU0 Group */ |
| 579 | jmpl %o5 + %lo(280f - 279b), %g0 /* CTI Group brk forced*/ | |
| 62f29da7 | 580 | sub %o0, %g6, %o0 /* IEU0 Group */ |
| bb769ab6 UD |
581 | RMOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g5, o5) |
| 582 | RMOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g5, o5) | |
| 583 | RMOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g5, o5) | |
| 584 | RMOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g5, o5) | |
| 585 | RMOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g5, o5) | |
| 586 | RMOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g5, o5) | |
| 587 | RMOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g5, o5) | |
| 588 | 280: be,pt %xcc, 281f /* CTI */ | |
| 589 | andcc %o2, 4, %g0 /* IEU1 */ | |
| 590 | ldx [%o1 - 8], %g2 /* Load Group */ | |
| 591 | sub %o0, 8, %o0 /* IEU0 */ | |
| 592 | stw %g2, [%o0 + 4] /* Store Group */ | |
| 593 | sub %o1, 8, %o1 /* IEU1 */ | |
| 594 | srlx %g2, 32, %g2 /* IEU0 Group */ | |
| 595 | stw %g2, [%o0] /* Store */ | |
| 596 | 281: be,pt %xcc, 1f /* CTI */ | |
| 597 | andcc %o2, 2, %g0 /* IEU1 Group */ | |
| 598 | lduw [%o1 - 4], %g2 /* Load Group */ | |
| 599 | sub %o1, 4, %o1 /* IEU0 */ | |
| 600 | stw %g2, [%o0 - 4] /* Store Group */ | |
| 601 | sub %o0, 4, %o0 /* IEU0 */ | |
| 602 | 1: be,pt %xcc, 1f /* CTI */ | |
| 603 | andcc %o2, 1, %g0 /* IEU1 Group */ | |
| 604 | lduh [%o1 - 2], %g2 /* Load Group */ | |
| 605 | sub %o1, 2, %o1 /* IEU0 */ | |
| 606 | sth %g2, [%o0 - 2] /* Store Group */ | |
| 607 | sub %o0, 2, %o0 /* IEU0 */ | |
| 608 | 1: be,pt %xcc, 211f /* CTI */ | |
| 609 | nop /* IEU1 */ | |
| 610 | ldub [%o1 - 1], %g2 /* Load Group */ | |
| 611 | stb %g2, [%o0 - 1] /* Store Group + bubble */ | |
| 612 | 211: retl | |
| 613 | mov %g4, %o0 | |
| 614 | ||
| 615 | 282: RMOVE_BIGALIGNCHUNK(o1, o0, 0x00, g1, g3, g5, o5) | |
| 616 | RMOVE_BIGALIGNCHUNK(o1, o0, 0x40, g1, g3, g5, o5) | |
| 62f29da7 | 617 | subcc %g6, 128, %g6 /* IEU1 Group */ |
| bb769ab6 UD |
618 | sub %o1, 128, %o1 /* IEU0 */ |
| 619 | bne,pt %xcc, 282b /* CTI */ | |
| 620 | sub %o0, 128, %o0 /* IEU0 Group */ | |
| 62f29da7 | 621 | andcc %o2, 0x70, %g6 /* IEU1 */ |
| bb769ab6 UD |
622 | be,pn %xcc, 284f /* CTI */ |
| 623 | andcc %o2, 8, %g0 /* IEU1 Group */ | |
| 624 | /* Clk1 8-( */ | |
| 625 | /* Clk2 8-( */ | |
| 626 | /* Clk3 8-( */ | |
| 627 | /* Clk4 8-( */ | |
| 628 | 283: rd %pc, %o5 /* PDU Group */ | |
| 62f29da7 UD |
629 | sub %o1, %g6, %o1 /* IEU0 Group */ |
| 630 | sub %o5, %g6, %o5 /* IEU1 */ | |
| bb769ab6 | 631 | jmpl %o5 + %lo(284f - 283b), %g0 /* CTI Group brk forced*/ |
| 62f29da7 | 632 | sub %o0, %g6, %o0 /* IEU0 Group */ |
| bb769ab6 UD |
633 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x60, g2, g3) |
| 634 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x50, g2, g3) | |
| 635 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x40, g2, g3) | |
| 636 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x30, g2, g3) | |
| 637 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x20, g2, g3) | |
| 638 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x10, g2, g3) | |
| 639 | RMOVE_LASTALIGNCHUNK(o1, o0, 0x00, g2, g3) | |
| 640 | 284: be,pt %xcc, 285f /* CTI Group */ | |
| 641 | andcc %o2, 4, %g0 /* IEU1 */ | |
| 642 | ldx [%o1 - 8], %g2 /* Load Group */ | |
| 643 | sub %o0, 8, %o0 /* IEU0 */ | |
| 644 | sub %o1, 8, %o1 /* IEU0 Group */ | |
| 645 | stx %g2, [%o0] /* Store */ | |
| 646 | 285: be,pt %xcc, 1f /* CTI */ | |
| 647 | andcc %o2, 2, %g0 /* IEU1 Group */ | |
| 648 | lduw [%o1 - 4], %g2 /* Load Group */ | |
| 649 | sub %o0, 4, %o0 /* IEU0 */ | |
| 650 | sub %o1, 4, %o1 /* IEU0 Group */ | |
| 651 | stw %g2, [%o0] /* Store */ | |
| 652 | 1: be,pt %xcc, 1f /* CTI */ | |
| 653 | andcc %o2, 1, %g0 /* IEU1 Group */ | |
| 654 | lduh [%o1 - 2], %g2 /* Load Group */ | |
| 655 | sub %o0, 2, %o0 /* IEU0 */ | |
| 656 | sub %o1, 2, %o1 /* IEU0 Group */ | |
| 657 | sth %g2, [%o0] /* Store */ | |
| 658 | 1: be,pt %xcc, 1f /* CTI */ | |
| 659 | nop /* IEU0 Group */ | |
| 660 | ldub [%o1 - 1], %g2 /* Load Group */ | |
| 661 | stb %g2, [%o0 - 1] /* Store Group + bubble */ | |
| 662 | 1: retl | |
| 663 | mov %g4, %o0 | |
| 664 | ||
| 665 | 232: brz,pt %g2, 2f /* CTI Group */ | |
| 666 | sub %o2, %g2, %o2 /* IEU0 Group */ | |
| 667 | 1: ldub [%o1 - 1], %g5 /* Load Group */ | |
| 668 | sub %o1, 1, %o1 /* IEU0 */ | |
| 669 | sub %o0, 1, %o0 /* IEU1 */ | |
| 670 | subcc %g2, 1, %g2 /* IEU1 Group */ | |
| 671 | bne,pt %xcc, 1b /* CTI */ | |
| 672 | stb %g5, [%o0] /* Store */ | |
| 673 | 2: andn %o2, 7, %g5 /* IEU0 Group */ | |
| 674 | and %o2, 7, %o2 /* IEU1 */ | |
| 675 | fmovd %f0, %f2 /* FPU */ | |
| 676 | alignaddr %o1, %g0, %g1 /* GRU Group */ | |
| 677 | ldd [%g1], %f4 /* Load Group */ | |
| 678 | 1: ldd [%g1 - 8], %f6 /* Load Group */ | |
| 679 | sub %g1, 8, %g1 /* IEU0 Group */ | |
| 680 | subcc %g5, 8, %g5 /* IEU1 */ | |
| 681 | faligndata %f6, %f4, %f0 /* GRU Group */ | |
| 682 | std %f0, [%o0 - 8] /* Store */ | |
| 683 | sub %o1, 8, %o1 /* IEU0 Group */ | |
| 684 | be,pn %xcc, 233f /* CTI */ | |
| 685 | sub %o0, 8, %o0 /* IEU1 */ | |
| 686 | ldd [%g1 - 8], %f4 /* Load Group */ | |
| 687 | sub %g1, 8, %g1 /* IEU0 */ | |
| 688 | subcc %g5, 8, %g5 /* IEU1 */ | |
| 689 | faligndata %f4, %f6, %f0 /* GRU Group */ | |
| 690 | std %f0, [%o0 - 8] /* Store */ | |
| 691 | sub %o1, 8, %o1 /* IEU0 */ | |
| 692 | bne,pn %xcc, 1b /* CTI Group */ | |
| 693 | sub %o0, 8, %o0 /* IEU0 */ | |
| 694 | 233: brz,pn %o2, 234f /* CTI Group */ | |
| 695 | nop /* IEU0 */ | |
| 696 | 237: ldub [%o1 - 1], %g5 /* LOAD */ | |
| 697 | sub %o1, 1, %o1 /* IEU0 */ | |
| 698 | sub %o0, 1, %o0 /* IEU1 */ | |
| 699 | subcc %o2, 1, %o2 /* IEU1 */ | |
| 700 | bne,pt %xcc, 237b /* CTI */ | |
| 701 | stb %g5, [%o0] /* Store Group */ | |
| 702 | 234: wr %g0, FPRS_FEF, %fprs | |
| 703 | retl | |
| 704 | mov %g4, %o0 | |
| 705 | END(memmove) | |
| 706 | ||
| 707 | #ifdef USE_BPR | |
| 708 | weak_alias(memcpy, __align_cpy_1) | |
| 709 | weak_alias(memcpy, __align_cpy_2) | |
| 710 | weak_alias(memcpy, __align_cpy_4) | |
| 711 | weak_alias(memcpy, __align_cpy_8) | |
| 712 | weak_alias(memcpy, __align_cpy_16) | |
| 713 | #endif |