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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 // | 4 // |
| 5 // The intrinsic code below is executed before a method has built its frame. | 5 // The intrinsic code below is executed before a method has built its frame. |
| 6 // The return address is on the stack and the arguments below it. | 6 // The return address is on the stack and the arguments below it. |
| 7 // Registers EDX (arguments descriptor) and ECX (function) must be preserved. | 7 // Registers EDX (arguments descriptor) and ECX (function) must be preserved. |
| 8 // Each intrinsification method returns true if the corresponding | 8 // Each intrinsification method returns true if the corresponding |
| 9 // Dart method was intrinsified. | 9 // Dart method was intrinsified. |
| 10 | 10 |
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| 723 | 723 |
| 724 __ Bind(&done); | 724 __ Bind(&done); |
| 725 // The remainder of two smis is always a smi, no overflow check needed. | 725 // The remainder of two smis is always a smi, no overflow check needed. |
| 726 __ SmiTag(EAX); | 726 __ SmiTag(EAX); |
| 727 __ ret(); | 727 __ ret(); |
| 728 | 728 |
| 729 __ Bind(&fall_through); | 729 __ Bind(&fall_through); |
| 730 } | 730 } |
| 731 | 731 |
| 732 | 732 |
| 733 void Intrinsifier::Integer_remainder(Assembler* assembler) { | |
| 734 Label fall_through; | |
| 735 TestBothArgumentsSmis(assembler, &fall_through); | |
| 736 // EAX: right argument (divisor) | |
| 737 __ movl(EBX, EAX); | |
| 738 __ movl(EAX, Address(ESP, + 2 * kWordSize)); // Left argument (dividend). | |
| 739 // EAX: Tagged left (dividend). | |
| 740 // EBX: Tagged right (divisor). | |
| 741 // Check if modulo by zero -> exception thrown in main function. | |
| 742 __ cmpl(EBX, Immediate(0)); | |
| 743 __ j(EQUAL, &fall_through, Assembler::kNearJump); | |
| 744 EmitRemainderOperation(assembler); | |
| 745 // Untagged remainder result in EDX. | |
| 746 __ movl(EAX, EDX); | |
| 747 __ SmiTag(EAX); | |
| 748 __ ret(); | |
| 749 | |
| 750 __ Bind(&fall_through); | |
| 751 } | |
| 752 | |
| 753 | |
| 754 void Intrinsifier::Integer_truncDivide(Assembler* assembler) { | 733 void Intrinsifier::Integer_truncDivide(Assembler* assembler) { |
| 755 Label fall_through; | 734 Label fall_through; |
| 756 TestBothArgumentsSmis(assembler, &fall_through); | 735 TestBothArgumentsSmis(assembler, &fall_through); |
| 757 // EAX: right argument (divisor) | 736 // EAX: right argument (divisor) |
| 758 __ cmpl(EAX, Immediate(0)); | 737 __ cmpl(EAX, Immediate(0)); |
| 759 __ j(EQUAL, &fall_through, Assembler::kNearJump); | 738 __ j(EQUAL, &fall_through, Assembler::kNearJump); |
| 760 __ movl(EBX, EAX); | 739 __ movl(EBX, EAX); |
| 761 __ SmiUntag(EBX); | 740 __ SmiUntag(EBX); |
| 762 __ movl(EAX, Address(ESP, + 2 * kWordSize)); // Left argument (dividend). | 741 __ movl(EAX, Address(ESP, + 2 * kWordSize)); // Left argument (dividend). |
| 763 __ SmiUntag(EAX); | 742 __ SmiUntag(EAX); |
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| 1804 | 1783 |
| 1805 | 1784 |
| 1806 void Intrinsifier::TwoByteString_equality(Assembler* assembler) { | 1785 void Intrinsifier::TwoByteString_equality(Assembler* assembler) { |
| 1807 StringEquality(assembler, kTwoByteStringCid); | 1786 StringEquality(assembler, kTwoByteStringCid); |
| 1808 } | 1787 } |
| 1809 | 1788 |
| 1810 #undef __ | 1789 #undef __ |
| 1811 } // namespace dart | 1790 } // namespace dart |
| 1812 | 1791 |
| 1813 #endif // defined TARGET_ARCH_IA32 | 1792 #endif // defined TARGET_ARCH_IA32 |
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