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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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1734 __ j(NOT_EQUAL, &fall_through, Assembler::kNearJump); | 1734 __ j(NOT_EQUAL, &fall_through, Assembler::kNearJump); |
1735 ASSERT(kSmiTagShift == 1); | 1735 ASSERT(kSmiTagShift == 1); |
1736 __ movzxw(EAX, FieldAddress(EAX, EBX, TIMES_1, TwoByteString::data_offset())); | 1736 __ movzxw(EAX, FieldAddress(EAX, EBX, TIMES_1, TwoByteString::data_offset())); |
1737 __ SmiTag(EAX); | 1737 __ SmiTag(EAX); |
1738 __ ret(); | 1738 __ ret(); |
1739 | 1739 |
1740 __ Bind(&fall_through); | 1740 __ Bind(&fall_through); |
1741 } | 1741 } |
1742 | 1742 |
1743 | 1743 |
| 1744 // bool _substringMatches(int start, String other) |
| 1745 void Intrinsifier::StringBaseSubstringMatches(Assembler* assembler) { |
| 1746 // For precompilation, not implemented on IA32. |
| 1747 } |
| 1748 |
| 1749 |
1744 void Intrinsifier::StringBaseCharAt(Assembler* assembler) { | 1750 void Intrinsifier::StringBaseCharAt(Assembler* assembler) { |
1745 Label fall_through, try_two_byte_string; | 1751 Label fall_through, try_two_byte_string; |
1746 __ movl(EBX, Address(ESP, + 1 * kWordSize)); // Index. | 1752 __ movl(EBX, Address(ESP, + 1 * kWordSize)); // Index. |
1747 __ movl(EAX, Address(ESP, + 2 * kWordSize)); // String. | 1753 __ movl(EAX, Address(ESP, + 2 * kWordSize)); // String. |
1748 __ testl(EBX, Immediate(kSmiTagMask)); | 1754 __ testl(EBX, Immediate(kSmiTagMask)); |
1749 __ j(NOT_ZERO, &fall_through, Assembler::kNearJump); // Non-smi index. | 1755 __ j(NOT_ZERO, &fall_through, Assembler::kNearJump); // Non-smi index. |
1750 // Range check. | 1756 // Range check. |
1751 __ cmpl(EBX, FieldAddress(EAX, String::length_offset())); | 1757 __ cmpl(EBX, FieldAddress(EAX, String::length_offset())); |
1752 // Runtime throws exception. | 1758 // Runtime throws exception. |
1753 __ j(ABOVE_EQUAL, &fall_through, Assembler::kNearJump); | 1759 __ j(ABOVE_EQUAL, &fall_through, Assembler::kNearJump); |
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2147 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) { | 2153 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) { |
2148 __ LoadIsolate(EAX); | 2154 __ LoadIsolate(EAX); |
2149 __ movl(EAX, Address(EAX, Isolate::current_tag_offset())); | 2155 __ movl(EAX, Address(EAX, Isolate::current_tag_offset())); |
2150 __ ret(); | 2156 __ ret(); |
2151 } | 2157 } |
2152 | 2158 |
2153 #undef __ | 2159 #undef __ |
2154 } // namespace dart | 2160 } // namespace dart |
2155 | 2161 |
2156 #endif // defined TARGET_ARCH_IA32 | 2162 #endif // defined TARGET_ARCH_IA32 |
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