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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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1618 __ bind(&push_false); | 1618 __ bind(&push_false); |
1619 __ push(Immediate(Factory::false_value())); | 1619 __ push(Immediate(Factory::false_value())); |
1620 __ jmp(saved_false); | 1620 __ jmp(saved_false); |
1621 break; | 1621 break; |
1622 } | 1622 } |
1623 true_label_ = saved_true; | 1623 true_label_ = saved_true; |
1624 false_label_ = saved_false; | 1624 false_label_ = saved_false; |
1625 // Convert current context to test context: End post-test code. | 1625 // Convert current context to test context: End post-test code. |
1626 } | 1626 } |
1627 | 1627 |
1628 Register FastCodeGenerator::result_register() { return eax; } | |
1629 | 1628 |
1630 void FastCodeGenerator::VisitThisFunction(ThisFunction* expr) { | 1629 void FastCodeGenerator::VisitThisFunction(ThisFunction* expr) { |
1631 __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); | 1630 __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
1632 Move(expr->context(), eax); | 1631 Move(expr->context(), eax); |
1633 } | 1632 } |
1634 | 1633 |
1634 | |
1635 Register FastCodeGenerator::result_register() { return eax; } | |
1636 | |
1637 // ---------------------------------------------------------------------------- | |
1638 // Non-local control flow support. | |
1639 | |
1640 void FastCodeGenerator::EnterFinallyBlock() { | |
1641 // Cook return address on top of stack (smi encoded Code* delta) | |
1642 __ mov(edx, Operand(esp, 0)); | |
Kevin Millikin (Chromium)
2009/12/10 13:51:12
Assert result_register is not edx?
Lasse Reichstein
2009/12/16 08:43:30
Good idea. Done.
| |
1643 __ sub(Operand(edx), Immediate(masm_->CodeObject())); | |
1644 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); | |
1645 ASSERT_EQ(0, kSmiTag); | |
1646 __ add(edx, Operand(edx)); // Convert to smi. | |
1647 __ mov(Operand(esp, 0), edx); | |
1648 // Store result register while executing finally block. | |
1649 __ push(eax); | |
Kevin Millikin (Chromium)
2009/12/10 13:51:12
__ push(result_register())
Lasse Reichstein
2009/12/16 08:43:30
Indeed. Half an abstractions is ... useless.
| |
1650 } | |
1651 | |
1652 | |
1653 void FastCodeGenerator::ReturnFromFinallyBlock() { | |
1654 // Restore result register from stack. | |
1655 __ pop(eax); | |
1656 // Uncook return address. | |
1657 __ mov(edx, Operand(esp, 0)); | |
Kevin Millikin (Chromium)
2009/12/10 13:51:12
Is this really better than:
__ pop(edx);
__ sar(e
Lasse Reichstein
2009/12/16 08:43:30
The CPU has a call/return stack that expects calls
| |
1658 __ sar(edx, 1); // Convert smi to int. | |
1659 __ add(Operand(edx), Immediate(masm_->CodeObject())); | |
1660 __ mov(Operand(esp, 0), edx); | |
1661 // And return. | |
1662 __ ret(0); | |
1663 } | |
1664 | |
1665 | |
1666 void FastCodeGenerator::ThrowException() { | |
1667 __ push(eax); | |
1668 __ CallRuntime(Runtime::kThrow, 1); | |
1669 } | |
1670 | |
1635 #undef __ | 1671 #undef __ |
1636 | 1672 |
1637 | |
1638 } } // namespace v8::internal | 1673 } } // namespace v8::internal |
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