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Changeset 3438
- Timestamp:
- 04/17/08 01:00:04
(5 months ago)
- Author:
- sean
- Message:
Changed use of EBX to scratch register EDX to avoid the need to save/restore EBX in function call. This closes #593
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Files:
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Legend:
- Unmodified
- Added
- Removed
- Modified
- Copied
- Moved
| r2356 |
r3438 |
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| 378 | 378 | volatile asm |
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| 379 | 379 | { |
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| 380 | | mov BL, 42; |
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| | 380 | mov DL, 42; |
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| 381 | 381 | mov AL, 42; |
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| 382 | 382 | mov ECX, val; |
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| 383 | 383 | lock; |
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| 384 | | cmpxchg [ECX], BL; |
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| | 384 | cmpxchg [ECX], DL; |
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| 385 | 385 | } |
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| 386 | 386 | } |
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| … | … | |
| 403 | 403 | volatile asm |
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| 404 | 404 | { |
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| 405 | | mov BX, 42; |
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| | 405 | mov DX, 42; |
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| 406 | 406 | mov AX, 42; |
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| 407 | 407 | mov ECX, val; |
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| 408 | 408 | lock; |
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| 409 | | cmpxchg [ECX], BX; |
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| | 409 | cmpxchg [ECX], DX; |
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| 410 | 410 | } |
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| 411 | 411 | } |
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| … | … | |
| 429 | 429 | volatile asm |
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| 430 | 430 | { |
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| 431 | | mov EBX, 42; |
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| | 431 | mov EDX, 42; |
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| 432 | 432 | mov EAX, 42; |
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| 433 | 433 | mov ECX, val; |
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| 434 | 434 | lock; |
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| 435 | | cmpxchg [ECX], EBX; |
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| | 435 | cmpxchg [ECX], EDX; |
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| 436 | 436 | } |
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| 437 | 437 | } |
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| … | … | |
| 526 | 526 | { |
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| 527 | 527 | mov EAX, val; |
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| 528 | | mov BL, newval; |
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| | 528 | mov DL, newval; |
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| 529 | 529 | lock; |
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| 530 | | xchg [EAX], BL; |
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| | 530 | xchg [EAX], DL; |
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| 531 | 531 | } |
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| 532 | 532 | } |
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| … | … | |
| 536 | 536 | { |
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| 537 | 537 | mov EAX, val; |
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| 538 | | mov BL, newval; |
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| 539 | | mov [EAX], BL; |
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| | 538 | mov DL, newval; |
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| | 539 | mov [EAX], DL; |
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| 540 | 540 | } |
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| 541 | 541 | } |
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| … | … | |
| 553 | 553 | { |
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| 554 | 554 | mov EAX, val; |
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| 555 | | mov BX, newval; |
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| | 555 | mov DX, newval; |
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| 556 | 556 | lock; |
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| 557 | | xchg [EAX], BX; |
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| | 557 | xchg [EAX], DX; |
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| 558 | 558 | } |
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| 559 | 559 | } |
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| … | … | |
| 563 | 563 | { |
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| 564 | 564 | mov EAX, val; |
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| 565 | | mov BX, newval; |
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| 566 | | mov [EAX], BX; |
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| | 565 | mov DX, newval; |
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| | 566 | mov [EAX], DX; |
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| 567 | 567 | } |
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| 568 | 568 | } |
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| … | … | |
| 580 | 580 | { |
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| 581 | 581 | mov EAX, val; |
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| 582 | | mov EBX, newval; |
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| | 582 | mov EDX, newval; |
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| 583 | 583 | lock; |
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| 584 | | xchg [EAX], EBX; |
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| | 584 | xchg [EAX], EDX; |
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| 585 | 585 | } |
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| 586 | 586 | } |
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| … | … | |
| 590 | 590 | { |
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| 591 | 591 | mov EAX, val; |
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| 592 | | mov EBX, newval; |
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| 593 | | mov [EAX], EBX; |
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| | 592 | mov EDX, newval; |
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| | 593 | mov [EAX], EDX; |
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| 594 | 594 | } |
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| 595 | 595 | } |
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| … | … | |
| 614 | 614 | { |
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| 615 | 615 | mov RAX, val; |
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| 616 | | mov RBX, newval; |
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| | 616 | mov RDX, newval; |
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| 617 | 617 | lock; |
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| 618 | | xchg [RAX], RBX; |
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| | 618 | xchg [RAX], RDX; |
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| 619 | 619 | } |
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| 620 | 620 | } |
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| … | … | |
| 624 | 624 | { |
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| 625 | 625 | mov RAX, val; |
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| 626 | | mov RBX, newval; |
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| 627 | | mov [RAX], RBX; |
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| | 626 | mov RDX, newval; |
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| | 627 | mov [RAX], RDX; |
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| 628 | 628 | } |
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| 629 | 629 | } |
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| … | … | |
| 682 | 682 | volatile asm |
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| 683 | 683 | { |
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| 684 | | mov BL, newval; |
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| | 684 | mov DL, newval; |
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| 685 | 685 | mov AL, equalTo; |
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| 686 | 686 | mov ECX, val; |
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| 687 | 687 | lock; // lock always needed to make this op atomic |
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| 688 | | cmpxchg [ECX], BL; |
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| | 688 | cmpxchg [ECX], DL; |
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| 689 | 689 | setz AL; |
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| 690 | 690 | } |
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| … | … | |
| 699 | 699 | volatile asm |
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| 700 | 700 | { |
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| 701 | | mov BX, newval; |
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| | 701 | mov DX, newval; |
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| 702 | 702 | mov AX, equalTo; |
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| 703 | 703 | mov ECX, val; |
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| 704 | 704 | lock; // lock always needed to make this op atomic |
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| 705 | | cmpxchg [ECX], BX; |
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| | 705 | cmpxchg [ECX], DX; |
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| 706 | 706 | setz AL; |
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| 707 | 707 | } |
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| … | … | |
| 716 | 716 | volatile asm |
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| 717 | 717 | { |
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| 718 | | mov EBX, newval; |
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| | 718 | mov EDX, newval; |
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| 719 | 719 | mov EAX, equalTo; |
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| 720 | 720 | mov ECX, val; |
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| 721 | 721 | lock; // lock always needed to make this op atomic |
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| 722 | | cmpxchg [ECX], EBX; |
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| | 722 | cmpxchg [ECX], EDX; |
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| 723 | 723 | setz AL; |
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| 724 | 724 | } |
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| … | … | |
| 740 | 740 | volatile asm |
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| 741 | 741 | { |
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| 742 | | mov RBX, newval; |
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| | 742 | mov RDX, newval; |
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| 743 | 743 | mov RAX, equalTo; |
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| 744 | 744 | mov RCX, val; |
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| 745 | 745 | lock; // lock always needed to make this op atomic |
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| 746 | | cmpxchg [RCX], RBX; |
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| | 746 | cmpxchg [RCX], RDX; |
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| 747 | 747 | setz AL; |
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| 748 | 748 | } |
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| … | … | |
| 757 | 757 | volatile asm |
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| 758 | 758 | { |
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| | 759 | push EDI; |
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| | 760 | push EBX; |
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| 759 | 761 | lea EDI, newval; |
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| 760 | 762 | mov EBX, [EDI]; |
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| … | … | |
| 765 | 767 | mov EDI, val; |
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| 766 | 768 | lock; // lock always needed to make this op atomic |
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| 767 | | cmpxch |
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| | 769 | cmpxchg8b [EDI]; |
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| 768 | 770 | setz AL; |
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| | 771 | pop EBX; |
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| | 772 | pop EDI; |
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| 769 | 773 | } |
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| 770 | 774 | } |
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