AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

More documents

Recommendations

Info

AMD64 Technology 26568—Rev. 3.05—September 2003 Exception Real General protection, #GP X X X X A null data segment was used to reference memory. Page fault, #PF X X A page fault resulted from the execution of the instruction. Alignment check, #AC X X An unaligned memory reference was performed while alignment checking was enabled. 252 PINSRW Virtual 8086 Protected Cause of Exception A memory address exceeded a data segment limit or was non-canonical.
26568—Rev. 3.05—September 2003 AMD64 Technology PMADDWD Packed Multiply Words and Add Doublewords Multiplies each packed 16-bit signed value in the first source operand by the corresponding packed 16-bit signed value in the second source operand, adds the adjacent intermediate 32-bit results of each multiplication (for example, the multiplication results for the adjacent bit fields 63–48 and 47–32, and 31–16 and 15–0), and writes the 32-bit result of each addition in the corresponding doubleword of the destination (first source). The first source/destination operand is an XMM register and the second source operand is another XMM register or 128-bit memory location. Mnemonic Opcode Description PMADDWD xmm1, xmm2/mem128 66 0F F5 /r Multiplies eight packed 16-bit signed values in an XMM register and another XMM register or 128-bit memory location, adds intermediate results, and writes the result in the destination XMM register. . xmm1 xmm2/mem128 127 112 111 96 95 80 79 64 63 48 47 32 31 16 15 0 . . . multiply add multiply . multiply multiply There is only one case in which the result of the multiplication and addition will not fit in a signed 32-bit destination. If all four of the 16-bit source operands used to produce a 32-bit multiply-add result have the value 8000h, the 32-bit result is 8000_0000h, which is incorrect. . . add 127 96 95 64 63 32 31 0 127 112 111 96 95 80 79 64 63 48 47 32 31 16 15 0 . . . pmaddwd-128.eps PMADDWD 253
Page 1 and 2:
AMD64 Technology AMD64 Architecture
Page 3 and 4:
26568—Rev. 3.05—September 2003
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230: 26568—Rev. 3.05—September 2003
Page 279: 26568—Rev. 3.05—September 2003
Page 331 and 332:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
Page 405 and 406:
Page 407 and 408:
Page 409 and 410:
Page 411 and 412:
Page 413 and 414:
Page 415 and 416:
Page 417 and 418:
Page 419 and 420:
Page 421 and 422:
Page 423 and 424:
Page 425 and 426:
Page 427 and 428:
Page 429 and 430:
Page 431 and 432:
show all

AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?