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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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| 815 __ xorl(EAX, ECX); | 815 __ xorl(EAX, ECX); |
| 816 // BSR does not write the destination register if source is zero. Put a 1 in | 816 // BSR does not write the destination register if source is zero. Put a 1 in |
| 817 // the Smi tag bit to ensure BSR writes to destination register. | 817 // the Smi tag bit to ensure BSR writes to destination register. |
| 818 __ orl(EAX, Immediate(kSmiTagMask)); | 818 __ orl(EAX, Immediate(kSmiTagMask)); |
| 819 __ bsrl(EAX, EAX); | 819 __ bsrl(EAX, EAX); |
| 820 __ SmiTag(EAX); | 820 __ SmiTag(EAX); |
| 821 __ ret(); | 821 __ ret(); |
| 822 } | 822 } |
| 823 | 823 |
| 824 | 824 |
| 825 void Intrinsifier::Smi_bitAndFromSmi(Assembler* assembler) { |
| 826 Integer_bitAndFromInteger(assembler); |
| 827 } |
| 828 |
| 829 |
| 825 void Intrinsifier::Bigint_lsh(Assembler* assembler) { | 830 void Intrinsifier::Bigint_lsh(Assembler* assembler) { |
| 826 // static void _lsh(Uint32List x_digits, int x_used, int n, | 831 // static void _lsh(Uint32List x_digits, int x_used, int n, |
| 827 // Uint32List r_digits) | 832 // Uint32List r_digits) |
| 828 | 833 |
| 829 // Preserve THR to free ESI. | 834 // Preserve THR to free ESI. |
| 830 __ pushl(THR); | 835 __ pushl(THR); |
| 831 ASSERT(THR == ESI); | 836 ASSERT(THR == ESI); |
| 832 | 837 |
| 833 __ movl(EDI, Address(ESP, 5 * kWordSize)); // x_digits | 838 __ movl(EDI, Address(ESP, 5 * kWordSize)); // x_digits |
| 834 __ movl(ECX, Address(ESP, 3 * kWordSize)); // n is Smi | 839 __ movl(ECX, Address(ESP, 3 * kWordSize)); // n is Smi |
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| 2153 __ Bind(&true_label); | 2158 __ Bind(&true_label); |
| 2154 __ LoadObject(EAX, Bool::True()); | 2159 __ LoadObject(EAX, Bool::True()); |
| 2155 __ ret(); | 2160 __ ret(); |
| 2156 } | 2161 } |
| 2157 | 2162 |
| 2158 #undef __ | 2163 #undef __ |
| 2159 | 2164 |
| 2160 } // namespace dart | 2165 } // namespace dart |
| 2161 | 2166 |
| 2162 #endif // defined TARGET_ARCH_IA32 | 2167 #endif // defined TARGET_ARCH_IA32 |
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