J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * FUNCTIONS |
| 29 | * mlib_ImageCopy_bit_na - BIT, non-aligned |
| 30 | * mlib_ImageCopy_bit_na_r - BIT, non-aligned, reverse |
| 31 | * |
| 32 | * SYNOPSIS |
| 33 | * |
| 34 | * void mlib_ImageCopy_bit_na(const mlib_u8 *sa, |
| 35 | * mlib_u8 *da, |
| 36 | * mlib_s32 size, |
| 37 | * mlib_s32 s_offset, |
| 38 | * mlib_s32 d_offset); |
| 39 | * void mlib_ImageCopy_bit_na_r(const mlib_u8 *sa, |
| 40 | * mlib_u8 *da, |
| 41 | * mlib_s32 size, |
| 42 | * mlib_s32 s_offset, |
| 43 | * mlib_s32 d_offset); |
| 44 | * ARGUMENT |
| 45 | * sp pointer to source image data |
| 46 | * dp pointer to destination image data |
| 47 | * size size in 8-bytes, bytes, or SHORTs |
| 48 | * width image width in 8-bytes |
| 49 | * height image height in lines |
| 50 | * stride source image line stride in 8-bytes |
| 51 | * dstride destination image line stride in 8-bytes |
| 52 | * s_offset source image line bit offset |
| 53 | * d_offset destination image line bit offset |
| 54 | * |
| 55 | * DESCRIPTION |
| 56 | * Direct copy from one image to another -- C version low level |
| 57 | * functions. |
| 58 | */ |
| 59 | |
| 60 | #include <stdlib.h> |
| 61 | #include "mlib_image.h" |
| 62 | #include "mlib_ImageCopy.h" |
| 63 | |
| 64 | /***************************************************************/ |
| 65 | /* |
| 66 | * Bit offsets of source and distination are not the same |
| 67 | */ |
| 68 | |
| 69 | void mlib_ImageCopy_bit_na(const mlib_u8 *sa, |
| 70 | mlib_u8 *da, |
| 71 | mlib_s32 size, |
| 72 | mlib_s32 s_offset, |
| 73 | mlib_s32 d_offset) |
| 74 | { |
| 75 | #ifdef _NO_LONGLONG |
| 76 | |
| 77 | mlib_u32 *dp; /* 4-byte aligned start points in dst */ |
| 78 | mlib_u32 *sp; /* 4-byte aligned start point in src */ |
| 79 | mlib_s32 j; /* offset of address in dst */ |
| 80 | mlib_u32 mask0 = 0xFFFFFFFF; |
| 81 | mlib_u32 dmask; |
| 82 | mlib_u32 src, src0, src1, dst; |
| 83 | mlib_s32 ls_offset, ld_offset, shift; |
| 84 | |
| 85 | if (size <= 0) return; |
| 86 | |
| 87 | /* prepare the destination addresses */ |
| 88 | dp = (mlib_u32 *)((mlib_addr)da & (~3)); |
| 89 | sp = (mlib_u32 *)((mlib_addr)sa & (~3)); |
| 90 | ld_offset = (((mlib_addr)da & 3) << 3) + d_offset; /* bit d_offset to first mlib_s32 */ |
| 91 | ls_offset = (((mlib_addr)sa & 3) << 3) + s_offset; /* bit d_offset to first mlib_s32 */ |
| 92 | |
| 93 | if (ld_offset > ls_offset) { |
| 94 | src0 = sp[0]; |
| 95 | dst = dp[0]; |
| 96 | if (ld_offset + size < 32) { |
| 97 | dmask = (mask0 << (32 - size)) >> ld_offset; |
| 98 | #ifdef _LITTLE_ENDIAN |
| 99 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 100 | src = (src0 >> (ld_offset - ls_offset)); |
| 101 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 102 | dst = (dst & (~dmask)) | (src & dmask); |
| 103 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 104 | #else |
| 105 | src = (src0 >> (ld_offset - ls_offset)); |
| 106 | dp[0] = (dst & (~dmask)) | (src & dmask); |
| 107 | #endif /* _LITTLE_ENDIAN */ |
| 108 | return; |
| 109 | } |
| 110 | |
| 111 | dmask = mask0 >> ld_offset; |
| 112 | #ifdef _LITTLE_ENDIAN |
| 113 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 114 | src = (src0 >> (ld_offset - ls_offset)); |
| 115 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 116 | dst = (dst & ~dmask) | (src & dmask); |
| 117 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 118 | #else |
| 119 | src = (src0 >> (ld_offset - ls_offset)); |
| 120 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 121 | #endif /* _LITTLE_ENDIAN */ |
| 122 | j = 32 - ld_offset; |
| 123 | dp++; |
| 124 | ls_offset += j; |
| 125 | } else { |
| 126 | |
| 127 | shift = ls_offset - ld_offset; |
| 128 | src0 = sp[0]; |
| 129 | if (ls_offset + size > 32) src1 = sp[1]; |
| 130 | dst = dp[0]; |
| 131 | |
| 132 | if (ld_offset + size < 32) { |
| 133 | dmask = (mask0 << (32 - size)) >> ld_offset; |
| 134 | #ifdef _LITTLE_ENDIAN |
| 135 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 136 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 137 | src = (src0 << shift) | (src1 >> (32 - shift)); |
| 138 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 139 | dst = (dst & ~dmask) | (src & dmask); |
| 140 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 141 | #else |
| 142 | src = (src0 << shift) | (src1 >> (32 - shift)); |
| 143 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 144 | #endif /* _LITTLE_ENDIAN */ |
| 145 | return; |
| 146 | } |
| 147 | |
| 148 | dmask = mask0 >> ld_offset; |
| 149 | #ifdef _LITTLE_ENDIAN |
| 150 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 151 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 152 | src = (src0 << shift) | (src1 >> (32 - shift)); |
| 153 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 154 | dst = (dst & ~dmask) | (src & dmask); |
| 155 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 156 | #else |
| 157 | src = (src0 << shift) | (src1 >> (32 - shift)); |
| 158 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 159 | #endif /* _LITTLE_ENDIAN */ |
| 160 | j = 32 - ld_offset; |
| 161 | dp++; |
| 162 | sp++; |
| 163 | ls_offset = ls_offset + j - 32; |
| 164 | } |
| 165 | |
| 166 | if (j < size) src1 = sp[0]; |
| 167 | #ifdef _LITTLE_ENDIAN |
| 168 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 169 | #endif /* _LITTLE_ENDIAN */ |
| 170 | for (; j <= size - 32; j += 32) { |
| 171 | src0 = src1; |
| 172 | src1 = sp[1]; |
| 173 | #ifdef _LITTLE_ENDIAN |
| 174 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 175 | src = (src0 << ls_offset) | (src1 >> (32 - ls_offset)); |
| 176 | dp[0] = (src << 24) | ((src & 0xFF00) << 8) | ((src >> 8) & 0xFF00) | (src >> 24); |
| 177 | #else |
| 178 | dp[0] = (src0 << ls_offset) | (src1 >> (32 - ls_offset)); |
| 179 | #endif /* _LITTLE_ENDIAN */ |
| 180 | sp++; |
| 181 | dp++; |
| 182 | } |
| 183 | |
| 184 | if (j < size) { |
| 185 | j = size - j; |
| 186 | src0 = src1; |
| 187 | if (ls_offset + j > 32) src1 = sp[1]; |
| 188 | dst = dp[0]; |
| 189 | dmask = mask0 << (32 - j); |
| 190 | #ifdef _LITTLE_ENDIAN |
| 191 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 192 | src = (src0 << ls_offset) | (src1 >> (32 - ls_offset)); |
| 193 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 194 | dst = (dst & ~dmask) | (src & dmask); |
| 195 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 196 | #else |
| 197 | src = (src0 << ls_offset) | (src1 >> (32 - ls_offset)); |
| 198 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 199 | #endif /* _LITTLE_ENDIAN */ |
| 200 | } |
| 201 | |
| 202 | #else /* _LONGLONG */ |
| 203 | |
| 204 | mlib_u64 *dp; /* 8-byte aligned start points in dst */ |
| 205 | mlib_u64 *sp; /* 8-byte aligned start point in src */ |
| 206 | mlib_s32 j; /* offset of address in dst */ |
| 207 | mlib_u64 lmask0 = 0xFFFFFFFFFFFFFFFF; |
| 208 | mlib_u64 dmask; |
| 209 | mlib_u64 lsrc, lsrc0, lsrc1, ldst; |
| 210 | mlib_s32 ls_offset, ld_offset, shift; |
| 211 | |
| 212 | if (size <= 0) return; |
| 213 | |
| 214 | /* prepare the destination addresses */ |
| 215 | dp = (mlib_u64 *)((mlib_addr)da & (~7)); |
| 216 | sp = (mlib_u64 *)((mlib_addr)sa & (~7)); |
| 217 | /* we can explicitly cast ro mlib_s32 here because value is in [0,64] range */ |
| 218 | ld_offset = (((mlib_s32) ((mlib_addr)da & 7)) << 3) + d_offset; /* bit d_offset to first mlib_d64 */ |
| 219 | ls_offset = (((mlib_s32) ((mlib_addr)sa & 7)) << 3) + s_offset; /* bit d_offset to first mlib_d64 */ |
| 220 | |
| 221 | if (ld_offset > ls_offset) { |
| 222 | lsrc0 = sp[0]; |
| 223 | ldst = dp[0]; |
| 224 | lsrc = (lsrc0 >> (ld_offset - ls_offset)); |
| 225 | if (ld_offset + size < 64) { |
| 226 | dmask = (lmask0 << (64 - size)) >> ld_offset; |
| 227 | dp[0] = (ldst & (~dmask)) | (lsrc & dmask); |
| 228 | return; |
| 229 | } |
| 230 | |
| 231 | dmask = lmask0 >> ld_offset; |
| 232 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 233 | j = 64 - ld_offset; |
| 234 | dp++; |
| 235 | ls_offset += j; |
| 236 | } else { |
| 237 | |
| 238 | shift = ls_offset - ld_offset; |
| 239 | lsrc0 = sp[0]; |
| 240 | if (ls_offset + size > 64) lsrc1 = sp[1]; |
| 241 | ldst = dp[0]; |
| 242 | lsrc = (lsrc0 << shift) | (lsrc1 >> (64 - shift)); |
| 243 | |
| 244 | if (ld_offset + size < 64) { |
| 245 | dmask = (lmask0 << (64 - size)) >> ld_offset; |
| 246 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 247 | return; |
| 248 | } |
| 249 | |
| 250 | dmask = lmask0 >> ld_offset; |
| 251 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 252 | j = 64 - ld_offset; |
| 253 | dp++; |
| 254 | sp++; |
| 255 | ls_offset = ls_offset + j - 64; |
| 256 | } |
| 257 | |
| 258 | if (j < size) lsrc1 = sp[0]; |
| 259 | #ifdef __SUNPRO_C |
| 260 | #pragma pipeloop(0) |
| 261 | #endif /* __SUNPRO_C */ |
| 262 | for (; j <= size - 64; j += 64) { |
| 263 | lsrc0 = lsrc1; |
| 264 | lsrc1 = sp[1]; |
| 265 | lsrc = (lsrc0 << ls_offset) | (lsrc1 >> (64 - ls_offset)); |
| 266 | dp[0] = lsrc; |
| 267 | sp++; |
| 268 | dp++; |
| 269 | } |
| 270 | |
| 271 | if (j < size) { |
| 272 | j = size - j; |
| 273 | lsrc0 = lsrc1; |
| 274 | if (ls_offset + j > 64) lsrc1 = sp[1]; |
| 275 | ldst = dp[0]; |
| 276 | dmask = lmask0 << (64 - j); |
| 277 | lsrc = (lsrc0 << ls_offset) | (lsrc1 >> (64 - ls_offset)); |
| 278 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 279 | } |
| 280 | #endif /* _NO_LONGLONG */ |
| 281 | } |
| 282 | |
| 283 | /***************************************************************/ |
| 284 | /* |
| 285 | * Bit offsets of source and distination are not the same |
| 286 | * This function is both for C and VIS version (LONGLONG case) |
| 287 | */ |
| 288 | |
| 289 | void mlib_ImageCopy_bit_na_r(const mlib_u8 *sa, |
| 290 | mlib_u8 *da, |
| 291 | mlib_s32 size, |
| 292 | mlib_s32 s_offset, |
| 293 | mlib_s32 d_offset) |
| 294 | { |
| 295 | #ifdef _NO_LONGLONG |
| 296 | |
| 297 | mlib_u32 *dp; /* 4-byte aligned start points in dst */ |
| 298 | mlib_u32 *sp; /* 4-byte aligned start point in src */ |
| 299 | mlib_s32 j; /* offset of address in dst */ |
| 300 | mlib_u32 lmask0 = 0xFFFFFFFF; |
| 301 | mlib_u32 dmask; |
| 302 | mlib_u32 src, src0, src1, dst; |
| 303 | mlib_s32 ls_offset, ld_offset, shift; |
| 304 | |
| 305 | if (size <= 0) return; |
| 306 | |
| 307 | /* prepare the destination addresses */ |
| 308 | dp = (mlib_u32 *)((mlib_addr)da & (~3)); |
| 309 | sp = (mlib_u32 *)((mlib_addr)sa & (~3)); |
| 310 | ld_offset = (((mlib_addr)da & 3) << 3) + d_offset; /* bit d_offset to first mlib_s32 */ |
| 311 | ls_offset = (((mlib_addr)sa & 3) << 3) + s_offset; /* bit d_offset to first mlib_s32 */ |
| 312 | |
| 313 | if (ld_offset < ls_offset) { |
| 314 | src0 = sp[0]; |
| 315 | dst = dp[0]; |
| 316 | if (ld_offset >= size) { |
| 317 | dmask = (lmask0 << (32 - size)) >> (ld_offset - size); |
| 318 | #ifdef _LITTLE_ENDIAN |
| 319 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 320 | src = (src0 << (ls_offset - ld_offset)); |
| 321 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 322 | dst = (dst & (~dmask)) | (src & dmask); |
| 323 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 324 | #else |
| 325 | src = (src0 << (ls_offset - ld_offset)); |
| 326 | dp[0] = (dst & (~dmask)) | (src & dmask); |
| 327 | #endif /* _LITTLE_ENDIAN */ |
| 328 | return; |
| 329 | } |
| 330 | |
| 331 | dmask = lmask0 << (32 - ld_offset); |
| 332 | #ifdef _LITTLE_ENDIAN |
| 333 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 334 | src = (src0 << (ls_offset - ld_offset)); |
| 335 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 336 | dst = (dst & ~dmask) | (src & dmask); |
| 337 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 338 | #else |
| 339 | src = (src0 << (ls_offset - ld_offset)); |
| 340 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 341 | #endif /* _LITTLE_ENDIAN */ |
| 342 | j = ld_offset; |
| 343 | dp--; |
| 344 | ls_offset -= j; |
| 345 | } else { |
| 346 | |
| 347 | shift = ld_offset - ls_offset; |
| 348 | src0 = sp[0]; |
| 349 | if (ls_offset < size) src1 = sp[-1]; |
| 350 | dst = dp[0]; |
| 351 | |
| 352 | if (ld_offset >= size) { |
| 353 | dmask = (lmask0 << (32 - size)) >> (ld_offset - size); |
| 354 | #ifdef _LITTLE_ENDIAN |
| 355 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 356 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 357 | src = (src0 >> shift) | (src1 << (32 - shift)); |
| 358 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 359 | dst = (dst & ~dmask) | (src & dmask); |
| 360 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 361 | #else |
| 362 | src = (src0 >> shift) | (src1 << (32 - shift)); |
| 363 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 364 | #endif /* _LITTLE_ENDIAN */ |
| 365 | return; |
| 366 | } |
| 367 | |
| 368 | dmask = lmask0 << (32 - ld_offset); |
| 369 | #ifdef _LITTLE_ENDIAN |
| 370 | src0 = (src0 << 24) | ((src0 & 0xFF00) << 8) | ((src0 >> 8) & 0xFF00) | (src0 >> 24); |
| 371 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 372 | src = (src0 >> shift) | (src1 << (32 - shift)); |
| 373 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 374 | dst = (dst & ~dmask) | (src & dmask); |
| 375 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 376 | #else |
| 377 | src = (src0 >> shift) | (src1 << (32 - shift)); |
| 378 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 379 | #endif /* _LITTLE_ENDIAN */ |
| 380 | j = ld_offset; |
| 381 | dp--; |
| 382 | sp--; |
| 383 | ls_offset = ls_offset - j + 32; |
| 384 | } |
| 385 | |
| 386 | if (j < size) src1 = sp[0]; |
| 387 | #ifdef _LITTLE_ENDIAN |
| 388 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 389 | #endif /* _LITTLE_ENDIAN */ |
| 390 | #ifdef __SUNPRO_C |
| 391 | #pragma pipeloop(0) |
| 392 | #endif /* __SUNPRO_C */ |
| 393 | for (; j <= size - 32; j += 32) { |
| 394 | src0 = src1; |
| 395 | src1 = sp[-1]; |
| 396 | #ifdef _LITTLE_ENDIAN |
| 397 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 398 | src = (src0 >> (32 - ls_offset)) | (src1 << ls_offset); |
| 399 | dp[0] = (src << 24) | ((src & 0xFF00) << 8) | ((src >> 8) & 0xFF00) | (src >> 24); |
| 400 | #else |
| 401 | dp[0] = (src0 >> (32 - ls_offset)) | (src1 << ls_offset); |
| 402 | #endif /* _LITTLE_ENDIAN */ |
| 403 | sp--; |
| 404 | dp--; |
| 405 | } |
| 406 | |
| 407 | if (j < size) { |
| 408 | j = size - j; |
| 409 | src0 = src1; |
| 410 | if (ls_offset < j) src1 = sp[-1]; |
| 411 | dst = dp[0]; |
| 412 | dmask = lmask0 >> (32 - j); |
| 413 | #ifdef _LITTLE_ENDIAN |
| 414 | src1 = (src1 << 24) | ((src1 & 0xFF00) << 8) | ((src1 >> 8) & 0xFF00) | (src1 >> 24); |
| 415 | src = (src0 >> (32 - ls_offset)) | (src1 << ls_offset); |
| 416 | dst = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 417 | dst = (dst & ~dmask) | (src & dmask); |
| 418 | dp[0] = (dst << 24) | ((dst & 0xFF00) << 8) | ((dst >> 8) & 0xFF00) | (dst >> 24); |
| 419 | #else |
| 420 | src = (src0 >> (32 - ls_offset)) | (src1 << ls_offset); |
| 421 | dp[0] = (dst & ~dmask) | (src & dmask); |
| 422 | #endif /* _LITTLE_ENDIAN */ |
| 423 | } |
| 424 | |
| 425 | #else /* _LONGLONG */ |
| 426 | |
| 427 | mlib_u64 *dp; /* 8-byte aligned start points in dst */ |
| 428 | mlib_u64 *sp; /* 8-byte aligned start point in src */ |
| 429 | mlib_s32 j; /* offset of address in dst */ |
| 430 | mlib_u64 lmask0 = 0xFFFFFFFFFFFFFFFF; |
| 431 | mlib_u64 dmask; |
| 432 | mlib_u64 lsrc, lsrc0, lsrc1, ldst; |
| 433 | mlib_s32 ls_offset, ld_offset, shift; |
| 434 | |
| 435 | if (size <= 0) return; |
| 436 | |
| 437 | /* prepare the destination addresses */ |
| 438 | dp = (mlib_u64 *)((mlib_addr)da & (~7)); |
| 439 | sp = (mlib_u64 *)((mlib_addr)sa & (~7)); |
| 440 | /* we can explicitly cast ro mlib_s32 here because value is in [0,64] range */ |
| 441 | ld_offset = (((mlib_s32) ((mlib_addr)da & 7)) << 3) + d_offset; /* bit d_offset to first mlib_d64 */ |
| 442 | ls_offset = (((mlib_s32) ((mlib_addr)sa & 7)) << 3) + s_offset; /* bit d_offset to first mlib_d64 */ |
| 443 | |
| 444 | if (ld_offset < ls_offset) { |
| 445 | lsrc0 = sp[0]; |
| 446 | ldst = dp[0]; |
| 447 | lsrc = (lsrc0 << (ls_offset - ld_offset)); |
| 448 | if (ld_offset >= size) { |
| 449 | dmask = (lmask0 << (64 - size)) >> (ld_offset - size); |
| 450 | dp[0] = (ldst & (~dmask)) | (lsrc & dmask); |
| 451 | return; |
| 452 | } |
| 453 | |
| 454 | dmask = lmask0 << (64 - ld_offset); |
| 455 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 456 | j = ld_offset; |
| 457 | dp--; |
| 458 | ls_offset -= j; |
| 459 | } else { |
| 460 | |
| 461 | shift = ld_offset - ls_offset; |
| 462 | lsrc0 = sp[0]; |
| 463 | if (ls_offset < size) lsrc1 = sp[-1]; |
| 464 | ldst = dp[0]; |
| 465 | lsrc = (lsrc0 >> shift) | (lsrc1 << (64 - shift)); |
| 466 | if (ld_offset >= size) { |
| 467 | dmask = (lmask0 << (64 - size)) >> (ld_offset - size); |
| 468 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 469 | return; |
| 470 | } |
| 471 | |
| 472 | dmask = lmask0 << (64 - ld_offset); |
| 473 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 474 | j = ld_offset; |
| 475 | dp--; |
| 476 | sp--; |
| 477 | ls_offset = ls_offset - j + 64; |
| 478 | } |
| 479 | |
| 480 | if (j < size) lsrc1 = sp[0]; |
| 481 | #ifdef __SUNPRO_C |
| 482 | #pragma pipeloop(0) |
| 483 | #endif /* __SUNPRO_C */ |
| 484 | for (; j <= size - 64; j += 64) { |
| 485 | lsrc0 = lsrc1; |
| 486 | lsrc1 = sp[-1]; |
| 487 | dp[0] = (lsrc0 >> (64 - ls_offset)) | (lsrc1 << ls_offset); |
| 488 | sp--; |
| 489 | dp--; |
| 490 | } |
| 491 | |
| 492 | if (j < size) { |
| 493 | j = size - j; |
| 494 | lsrc0 = lsrc1; |
| 495 | if (ls_offset < j) lsrc1 = sp[-1]; |
| 496 | ldst = dp[0]; |
| 497 | dmask = lmask0 >> (64 - j); |
| 498 | lsrc = (lsrc0 >> (64 - ls_offset)) | (lsrc1 << ls_offset); |
| 499 | dp[0] = (ldst & ~dmask) | (lsrc & dmask); |
| 500 | } |
| 501 | #endif /* _NO_LONGLONG */ |
| 502 | } |
| 503 | |
| 504 | /***************************************************************/ |