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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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517 } | 517 } |
518 | 518 |
519 | 519 |
520 void KeyedLoadIC::GenerateString(MacroAssembler* masm) { | 520 void KeyedLoadIC::GenerateString(MacroAssembler* masm) { |
521 // ----------- S t a t e ------------- | 521 // ----------- S t a t e ------------- |
522 // -- rsp[0] : return address | 522 // -- rsp[0] : return address |
523 // -- rsp[8] : name | 523 // -- rsp[8] : name |
524 // -- rsp[16] : receiver | 524 // -- rsp[16] : receiver |
525 // ----------------------------------- | 525 // ----------------------------------- |
526 | 526 |
527 GenerateGeneric(masm); | 527 Label miss, index_ok; |
| 528 |
| 529 // Check that the receiver isn't a smi. |
| 530 __ movq(rcx, Operand(rsp, 2 * kPointerSize)); |
| 531 __ JumpIfSmi(rcx, &miss); |
| 532 |
| 533 // Check that the receiver is a string. |
| 534 Condition is_string = masm->IsObjectStringType(rcx, rax, rbx); |
| 535 __ j(NegateCondition(is_string), &miss); |
| 536 |
| 537 // Check if key is a smi or a heap number. |
| 538 __ movq(rax, Operand(rsp, kPointerSize)); |
| 539 __ JumpIfSmi(rax, &index_ok); |
| 540 __ CheckMap(rax, Factory::heap_number_map(), &miss, false); |
| 541 |
| 542 __ bind(&index_ok); |
| 543 // Duplicate receiver and key since they are expected on the stack after |
| 544 // the KeyedLoadIC call. |
| 545 __ pop(rbx); // return address |
| 546 __ push(rcx); // receiver |
| 547 __ push(rax); // key |
| 548 __ push(rbx); // return address |
| 549 __ InvokeBuiltin(Builtins::STRING_CHAR_AT, JUMP_FUNCTION); |
| 550 |
| 551 __ bind(&miss); |
| 552 GenerateMiss(masm); |
528 } | 553 } |
529 | 554 |
530 | 555 |
531 void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, | 556 void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, |
532 ExternalArrayType array_type) { | 557 ExternalArrayType array_type) { |
533 // ----------- S t a t e ------------- | 558 // ----------- S t a t e ------------- |
534 // -- rsp[0] : return address | 559 // -- rsp[0] : return address |
535 // -- rsp[8] : name | 560 // -- rsp[8] : name |
536 // -- rsp[16] : receiver | 561 // -- rsp[16] : receiver |
537 // ----------------------------------- | 562 // ----------------------------------- |
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1548 __ bind(&miss); | 1573 __ bind(&miss); |
1549 | 1574 |
1550 GenerateMiss(masm); | 1575 GenerateMiss(masm); |
1551 } | 1576 } |
1552 | 1577 |
1553 | 1578 |
1554 #undef __ | 1579 #undef __ |
1555 | 1580 |
1556 | 1581 |
1557 } } // namespace v8::internal | 1582 } } // namespace v8::internal |
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