| multiply_and_divide.py (6458:d959f578ae42) | multiply_and_divide.py (6459:f7f0d361d6fc) |
|---|---|
| 1# Copyright (c) 2007 The Hewlett-Packard Development Company 2# All rights reserved. 3# 4# Redistribution and use of this software in source and binary forms, 5# with or without modification, are permitted provided that the 6# following conditions are met: 7# 8# The software must be used only for Non-Commercial Use which means any --- 215 unchanged lines hidden (view full) --- 224 225# 226# One byte version of unsigned division 227# 228 229def macroop DIV_B_R 230{ 231 # Do the initial part of the division | 1# Copyright (c) 2007 The Hewlett-Packard Development Company 2# All rights reserved. 3# 4# Redistribution and use of this software in source and binary forms, 5# with or without modification, are permitted provided that the 6# following conditions are met: 7# 8# The software must be used only for Non-Commercial Use which means any --- 215 unchanged lines hidden (view full) --- 224 225# 226# One byte version of unsigned division 227# 228 229def macroop DIV_B_R 230{ 231 # Do the initial part of the division |
| 232 div1 rsi, reg, dataSize=1 | 232 div1 ah, reg, dataSize=1 |
| 233 234 #These are split out so we can initialize the number of bits in the 235 #second register 236 div2i t1, rax, 8, dataSize=1 237 div2 t1, rax, t1, dataSize=1 238 239 #Loop until we're out of bits to shift in 240divLoopTop: 241 div2 t1, rax, t1, dataSize=1 242 div2 t1, rax, t1, flags=(EZF,), dataSize=1 243 br label("divLoopTop"), flags=(nCEZF,) 244 245 #Unload the answer 246 divq rax, dataSize=1 | 233 234 #These are split out so we can initialize the number of bits in the 235 #second register 236 div2i t1, rax, 8, dataSize=1 237 div2 t1, rax, t1, dataSize=1 238 239 #Loop until we're out of bits to shift in 240divLoopTop: 241 div2 t1, rax, t1, dataSize=1 242 div2 t1, rax, t1, flags=(EZF,), dataSize=1 243 br label("divLoopTop"), flags=(nCEZF,) 244 245 #Unload the answer 246 divq rax, dataSize=1 |
| 247 divr rsi, dataSize=1 | 247 divr ah, dataSize=1 |
| 248}; 249 250def macroop DIV_B_M 251{ 252 ld t2, seg, sib, disp 253 254 # Do the initial part of the division | 248}; 249 250def macroop DIV_B_M 251{ 252 ld t2, seg, sib, disp 253 254 # Do the initial part of the division |
| 255 div1 rsi, t2, dataSize=1 | 255 div1 ah, t2, dataSize=1 |
| 256 257 #These are split out so we can initialize the number of bits in the 258 #second register 259 div2i t1, rax, 8, dataSize=1 260 div2 t1, rax, t1, dataSize=1 261 262 #Loop until we're out of bits to shift in 263divLoopTop: 264 div2 t1, rax, t1, dataSize=1 265 div2 t1, rax, t1, flags=(EZF,), dataSize=1 266 br label("divLoopTop"), flags=(nCEZF,) 267 268 #Unload the answer 269 divq rax, dataSize=1 | 256 257 #These are split out so we can initialize the number of bits in the 258 #second register 259 div2i t1, rax, 8, dataSize=1 260 div2 t1, rax, t1, dataSize=1 261 262 #Loop until we're out of bits to shift in 263divLoopTop: 264 div2 t1, rax, t1, dataSize=1 265 div2 t1, rax, t1, flags=(EZF,), dataSize=1 266 br label("divLoopTop"), flags=(nCEZF,) 267 268 #Unload the answer 269 divq rax, dataSize=1 |
| 270 divr rsi, dataSize=1 | 270 divr ah, dataSize=1 |
| 271}; 272 273def macroop DIV_B_P 274{ 275 rdip t7 276 ld t2, seg, riprel, disp 277 278 # Do the initial part of the division | 271}; 272 273def macroop DIV_B_P 274{ 275 rdip t7 276 ld t2, seg, riprel, disp 277 278 # Do the initial part of the division |
| 279 div1 rsi, t2, dataSize=1 | 279 div1 ah, t2, dataSize=1 |
| 280 281 #These are split out so we can initialize the number of bits in the 282 #second register 283 div2i t1, rax, 8, dataSize=1 284 div2 t1, rax, t1, dataSize=1 285 286 #Loop until we're out of bits to shift in 287divLoopTop: 288 div2 t1, rax, t1, dataSize=1 289 div2 t1, rax, t1, flags=(EZF,), dataSize=1 290 br label("divLoopTop"), flags=(nCEZF,) 291 292 #Unload the answer 293 divq rax, dataSize=1 | 280 281 #These are split out so we can initialize the number of bits in the 282 #second register 283 div2i t1, rax, 8, dataSize=1 284 div2 t1, rax, t1, dataSize=1 285 286 #Loop until we're out of bits to shift in 287divLoopTop: 288 div2 t1, rax, t1, dataSize=1 289 div2 t1, rax, t1, flags=(EZF,), dataSize=1 290 br label("divLoopTop"), flags=(nCEZF,) 291 292 #Unload the answer 293 divq rax, dataSize=1 |
| 294 divr rsi, dataSize=1 | 294 divr ah, dataSize=1 |
| 295}; 296 297# 298# Unsigned division 299# 300 301def macroop DIV_R 302{ --- 76 unchanged lines hidden (view full) --- 379# One byte version of signed division 380# 381 382def macroop IDIV_B_R 383{ 384 # Negate dividend 385 sub t1, t0, rax, flags=(ECF,), dataSize=1 386 ruflag t4, 3 | 295}; 296 297# 298# Unsigned division 299# 300 301def macroop DIV_R 302{ --- 76 unchanged lines hidden (view full) --- 379# One byte version of signed division 380# 381 382def macroop IDIV_B_R 383{ 384 # Negate dividend 385 sub t1, t0, rax, flags=(ECF,), dataSize=1 386 ruflag t4, 3 |
| 387 sub t2, t0, rsi, dataSize=1 | 387 sub t2, t0, ah, dataSize=1 |
| 388 sub t2, t2, t4 389 390 #Find the sign of the divisor 391 #FIXME!!! This depends on shifts setting the carry flag correctly. 392 slli t0, reg, 1, flags=(ECF,), dataSize=1 393 394 # Negate divisor 395 sub t3, t0, reg, dataSize=1 396 # Put the divisor's absolute value into t3 397 mov t3, t3, reg, flags=(nCECF,), dataSize=1 398 399 #Find the sign of the dividend 400 #FIXME!!! This depends on shifts setting the carry flag correctly. | 388 sub t2, t2, t4 389 390 #Find the sign of the divisor 391 #FIXME!!! This depends on shifts setting the carry flag correctly. 392 slli t0, reg, 1, flags=(ECF,), dataSize=1 393 394 # Negate divisor 395 sub t3, t0, reg, dataSize=1 396 # Put the divisor's absolute value into t3 397 mov t3, t3, reg, flags=(nCECF,), dataSize=1 398 399 #Find the sign of the dividend 400 #FIXME!!! This depends on shifts setting the carry flag correctly. |
| 401 slli t0, rsi, 1, flags=(ECF,), dataSize=1 | 401 slli t0, ah, 1, flags=(ECF,), dataSize=1 |
| 402 403 # Put the dividend's absolute value into t1 and t2 404 mov t1, t1, rax, flags=(nCECF,), dataSize=1 | 402 403 # Put the dividend's absolute value into t1 and t2 404 mov t1, t1, rax, flags=(nCECF,), dataSize=1 |
| 405 mov t2, t2, rsi, flags=(nCECF,), dataSize=1 | 405 mov t2, t2, ah, flags=(nCECF,), dataSize=1 |
| 406 407 # Do the initial part of the division 408 div1 t2, t3, dataSize=1 409 410 #These are split out so we can initialize the number of bits in the 411 #second register 412 div2i t4, t1, 8, dataSize=1 413 div2 t4, t1, t4, dataSize=1 --- 10 unchanged lines hidden (view full) --- 424 425 # Fix up signs. The sign of the dividend is still lying around in ECF. 426 # The sign of the remainder, ah, is the same as the dividend. The sign 427 # of the quotient is negated if the signs of the divisor and dividend 428 # were different. 429 430 # Negate the remainder 431 sub t4, t0, t6, dataSize=1 | 406 407 # Do the initial part of the division 408 div1 t2, t3, dataSize=1 409 410 #These are split out so we can initialize the number of bits in the 411 #second register 412 div2i t4, t1, 8, dataSize=1 413 div2 t4, t1, t4, dataSize=1 --- 10 unchanged lines hidden (view full) --- 424 425 # Fix up signs. The sign of the dividend is still lying around in ECF. 426 # The sign of the remainder, ah, is the same as the dividend. The sign 427 # of the quotient is negated if the signs of the divisor and dividend 428 # were different. 429 430 # Negate the remainder 431 sub t4, t0, t6, dataSize=1 |
| 432 # If the dividend was negitive, put the negated remainder in rsi. 433 mov rsi, rsi, t4, (CECF,), dataSize=1 434 # Otherwise put the regular remainder in rsi. 435 mov rsi, rsi, t6, (nCECF,), dataSize=1 | 432 # If the dividend was negitive, put the negated remainder in ah. 433 mov ah, ah, t4, (CECF,), dataSize=1 434 # Otherwise put the regular remainder in ah. 435 mov ah, ah, t6, (nCECF,), dataSize=1 |
| 436 437 # Negate the quotient. 438 sub t4, t0, t5, dataSize=1 439 # If the dividend was negative, start using the negated quotient 440 mov t5, t5, t4, (CECF,), dataSize=1 441 442 # Check the sign of the divisor 443 slli t0, t3, 1, flags=(ECF,), dataSize=1 --- 6 unchanged lines hidden (view full) --- 450 mov rax, rax, t5, (nCECF,), dataSize=1 451}; 452 453def macroop IDIV_B_M 454{ 455 # Negate dividend 456 sub t1, t0, rax, flags=(ECF,), dataSize=1 457 ruflag t4, 3 | 436 437 # Negate the quotient. 438 sub t4, t0, t5, dataSize=1 439 # If the dividend was negative, start using the negated quotient 440 mov t5, t5, t4, (CECF,), dataSize=1 441 442 # Check the sign of the divisor 443 slli t0, t3, 1, flags=(ECF,), dataSize=1 --- 6 unchanged lines hidden (view full) --- 450 mov rax, rax, t5, (nCECF,), dataSize=1 451}; 452 453def macroop IDIV_B_M 454{ 455 # Negate dividend 456 sub t1, t0, rax, flags=(ECF,), dataSize=1 457 ruflag t4, 3 |
| 458 sub t2, t0, rsi, dataSize=1 | 458 sub t2, t0, ah, dataSize=1 |
| 459 sub t2, t2, t4 460 461 ld t3, seg, sib, disp 462 463 #Find the sign of the divisor 464 #FIXME!!! This depends on shifts setting the carry flag correctly. 465 slli t0, t3, 1, flags=(ECF,), dataSize=1 466 467 # Negate divisor 468 sub t4, t0, t3, dataSize=1 469 # Put the divisor's absolute value into t3 470 mov t3, t3, t4, flags=(CECF,), dataSize=1 471 472 #Find the sign of the dividend 473 #FIXME!!! This depends on shifts setting the carry flag correctly. | 459 sub t2, t2, t4 460 461 ld t3, seg, sib, disp 462 463 #Find the sign of the divisor 464 #FIXME!!! This depends on shifts setting the carry flag correctly. 465 slli t0, t3, 1, flags=(ECF,), dataSize=1 466 467 # Negate divisor 468 sub t4, t0, t3, dataSize=1 469 # Put the divisor's absolute value into t3 470 mov t3, t3, t4, flags=(CECF,), dataSize=1 471 472 #Find the sign of the dividend 473 #FIXME!!! This depends on shifts setting the carry flag correctly. |
| 474 slli t0, rsi, 1, flags=(ECF,), dataSize=1 | 474 slli t0, ah, 1, flags=(ECF,), dataSize=1 |
| 475 476 # Put the dividend's absolute value into t1 and t2 477 mov t1, t1, rax, flags=(nCECF,), dataSize=1 | 475 476 # Put the dividend's absolute value into t1 and t2 477 mov t1, t1, rax, flags=(nCECF,), dataSize=1 |
| 478 mov t2, t2, rsi, flags=(nCECF,), dataSize=1 | 478 mov t2, t2, ah, flags=(nCECF,), dataSize=1 |
| 479 480 # Do the initial part of the division 481 div1 t2, t3, dataSize=1 482 483 #These are split out so we can initialize the number of bits in the 484 #second register 485 div2i t4, t1, 8, dataSize=1 486 div2 t4, t1, t4, dataSize=1 --- 10 unchanged lines hidden (view full) --- 497 498 # Fix up signs. The sign of the dividend is still lying around in ECF. 499 # The sign of the remainder, ah, is the same as the dividend. The sign 500 # of the quotient is negated if the signs of the divisor and dividend 501 # were different. 502 503 # Negate the remainder 504 sub t4, t0, t6, dataSize=1 | 479 480 # Do the initial part of the division 481 div1 t2, t3, dataSize=1 482 483 #These are split out so we can initialize the number of bits in the 484 #second register 485 div2i t4, t1, 8, dataSize=1 486 div2 t4, t1, t4, dataSize=1 --- 10 unchanged lines hidden (view full) --- 497 498 # Fix up signs. The sign of the dividend is still lying around in ECF. 499 # The sign of the remainder, ah, is the same as the dividend. The sign 500 # of the quotient is negated if the signs of the divisor and dividend 501 # were different. 502 503 # Negate the remainder 504 sub t4, t0, t6, dataSize=1 |
| 505 # If the dividend was negitive, put the negated remainder in rsi. 506 mov rsi, rsi, t4, (CECF,), dataSize=1 507 # Otherwise put the regular remainder in rsi. 508 mov rsi, rsi, t6, (nCECF,), dataSize=1 | 505 # If the dividend was negitive, put the negated remainder in ah. 506 mov ah, ah, t4, (CECF,), dataSize=1 507 # Otherwise put the regular remainder in ah. 508 mov ah, ah, t6, (nCECF,), dataSize=1 |
| 509 510 # Negate the quotient. 511 sub t4, t0, t5, dataSize=1 512 # If the dividend was negative, start using the negated quotient 513 mov t5, t5, t4, (CECF,), dataSize=1 514 515 # Check the sign of the divisor 516 slli t0, t3, 1, flags=(ECF,), dataSize=1 --- 6 unchanged lines hidden (view full) --- 523 mov rax, rax, t5, (nCECF,), dataSize=1 524}; 525 526def macroop IDIV_B_P 527{ 528 # Negate dividend 529 sub t1, t0, rax, flags=(ECF,), dataSize=1 530 ruflag t4, 3 | 509 510 # Negate the quotient. 511 sub t4, t0, t5, dataSize=1 512 # If the dividend was negative, start using the negated quotient 513 mov t5, t5, t4, (CECF,), dataSize=1 514 515 # Check the sign of the divisor 516 slli t0, t3, 1, flags=(ECF,), dataSize=1 --- 6 unchanged lines hidden (view full) --- 523 mov rax, rax, t5, (nCECF,), dataSize=1 524}; 525 526def macroop IDIV_B_P 527{ 528 # Negate dividend 529 sub t1, t0, rax, flags=(ECF,), dataSize=1 530 ruflag t4, 3 |
| 531 sub t2, t0, rsi, dataSize=1 | 531 sub t2, t0, ah, dataSize=1 |
| 532 sub t2, t2, t4 533 534 rdip t7 535 ld t3, seg, riprel, disp 536 537 #Find the sign of the divisor 538 #FIXME!!! This depends on shifts setting the carry flag correctly. 539 slli t0, t3, 1, flags=(ECF,), dataSize=1 540 541 # Negate divisor 542 sub t4, t0, t3, dataSize=1 543 # Put the divisor's absolute value into t3 544 mov t3, t3, t4, flags=(CECF,), dataSize=1 545 546 #Find the sign of the dividend 547 #FIXME!!! This depends on shifts setting the carry flag correctly. | 532 sub t2, t2, t4 533 534 rdip t7 535 ld t3, seg, riprel, disp 536 537 #Find the sign of the divisor 538 #FIXME!!! This depends on shifts setting the carry flag correctly. 539 slli t0, t3, 1, flags=(ECF,), dataSize=1 540 541 # Negate divisor 542 sub t4, t0, t3, dataSize=1 543 # Put the divisor's absolute value into t3 544 mov t3, t3, t4, flags=(CECF,), dataSize=1 545 546 #Find the sign of the dividend 547 #FIXME!!! This depends on shifts setting the carry flag correctly. |
| 548 slli t0, rsi, 1, flags=(ECF,), dataSize=1 | 548 slli t0, ah, 1, flags=(ECF,), dataSize=1 |
| 549 550 # Put the dividend's absolute value into t1 and t2 551 mov t1, t1, rax, flags=(nCECF,), dataSize=1 | 549 550 # Put the dividend's absolute value into t1 and t2 551 mov t1, t1, rax, flags=(nCECF,), dataSize=1 |
| 552 mov t2, t2, rsi, flags=(nCECF,), dataSize=1 | 552 mov t2, t2, ah, flags=(nCECF,), dataSize=1 |
| 553 554 # Do the initial part of the division 555 div1 t2, t3, dataSize=1 556 557 #These are split out so we can initialize the number of bits in the 558 #second register 559 div2i t4, t1, 8, dataSize=1 560 div2 t4, t1, t4, dataSize=1 --- 10 unchanged lines hidden (view full) --- 571 572 # Fix up signs. The sign of the dividend is still lying around in ECF. 573 # The sign of the remainder, ah, is the same as the dividend. The sign 574 # of the quotient is negated if the signs of the divisor and dividend 575 # were different. 576 577 # Negate the remainder 578 sub t4, t0, t6, dataSize=1 | 553 554 # Do the initial part of the division 555 div1 t2, t3, dataSize=1 556 557 #These are split out so we can initialize the number of bits in the 558 #second register 559 div2i t4, t1, 8, dataSize=1 560 div2 t4, t1, t4, dataSize=1 --- 10 unchanged lines hidden (view full) --- 571 572 # Fix up signs. The sign of the dividend is still lying around in ECF. 573 # The sign of the remainder, ah, is the same as the dividend. The sign 574 # of the quotient is negated if the signs of the divisor and dividend 575 # were different. 576 577 # Negate the remainder 578 sub t4, t0, t6, dataSize=1 |
| 579 # If the dividend was negitive, put the negated remainder in rsi. 580 mov rsi, rsi, t4, (CECF,), dataSize=1 581 # Otherwise put the regular remainder in rsi. 582 mov rsi, rsi, t6, (nCECF,), dataSize=1 | 579 # If the dividend was negitive, put the negated remainder in ah. 580 mov ah, ah, t4, (CECF,), dataSize=1 581 # Otherwise put the regular remainder in ah. 582 mov ah, ah, t6, (nCECF,), dataSize=1 |
| 583 584 # Negate the quotient. 585 sub t4, t0, t5, dataSize=1 586 # If the dividend was negative, start using the negated quotient 587 mov t5, t5, t4, (CECF,), dataSize=1 588 589 # Check the sign of the divisor 590 slli t0, t3, 1, flags=(ECF,), dataSize=1 --- 237 unchanged lines hidden --- | 583 584 # Negate the quotient. 585 sub t4, t0, t5, dataSize=1 586 # If the dividend was negative, start using the negated quotient 587 mov t5, t5, t4, (CECF,), dataSize=1 588 589 # Check the sign of the divisor 590 slli t0, t3, 1, flags=(ECF,), dataSize=1 --- 237 unchanged lines hidden --- |