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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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513 __ CallRuntime(Runtime::kNotifyDeoptimized, 1); | 513 __ CallRuntime(Runtime::kNotifyDeoptimized, 1); |
514 | 514 |
515 // Tear down temporary frame. | 515 // Tear down temporary frame. |
516 __ LeaveInternalFrame(); | 516 __ LeaveInternalFrame(); |
517 | 517 |
518 // Get the full codegen state from the stack and untag it. | 518 // Get the full codegen state from the stack and untag it. |
519 __ mov(ecx, Operand(esp, 1 * kPointerSize)); | 519 __ mov(ecx, Operand(esp, 1 * kPointerSize)); |
520 __ SmiUntag(ecx); | 520 __ SmiUntag(ecx); |
521 | 521 |
522 // Switch on the state. | 522 // Switch on the state. |
523 NearLabel not_no_registers, not_tos_eax; | 523 Label not_no_registers, not_tos_eax; |
524 __ cmp(ecx, FullCodeGenerator::NO_REGISTERS); | 524 __ cmp(ecx, FullCodeGenerator::NO_REGISTERS); |
525 __ j(not_equal, ¬_no_registers); | 525 __ j(not_equal, ¬_no_registers, Label::kNear); |
526 __ ret(1 * kPointerSize); // Remove state. | 526 __ ret(1 * kPointerSize); // Remove state. |
527 | 527 |
528 __ bind(¬_no_registers); | 528 __ bind(¬_no_registers); |
529 __ mov(eax, Operand(esp, 2 * kPointerSize)); | 529 __ mov(eax, Operand(esp, 2 * kPointerSize)); |
530 __ cmp(ecx, FullCodeGenerator::TOS_REG); | 530 __ cmp(ecx, FullCodeGenerator::TOS_REG); |
531 __ j(not_equal, ¬_tos_eax); | 531 __ j(not_equal, ¬_tos_eax, Label::kNear); |
532 __ ret(2 * kPointerSize); // Remove state, eax. | 532 __ ret(2 * kPointerSize); // Remove state, eax. |
533 | 533 |
534 __ bind(¬_tos_eax); | 534 __ bind(¬_tos_eax); |
535 __ Abort("no cases left"); | 535 __ Abort("no cases left"); |
536 } | 536 } |
537 | 537 |
538 | 538 |
539 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { | 539 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
540 Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); | 540 Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
541 } | 541 } |
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1570 | 1570 |
1571 // Pass the function to optimize as the argument to the on-stack | 1571 // Pass the function to optimize as the argument to the on-stack |
1572 // replacement runtime function. | 1572 // replacement runtime function. |
1573 __ EnterInternalFrame(); | 1573 __ EnterInternalFrame(); |
1574 __ push(eax); | 1574 __ push(eax); |
1575 __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); | 1575 __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); |
1576 __ LeaveInternalFrame(); | 1576 __ LeaveInternalFrame(); |
1577 | 1577 |
1578 // If the result was -1 it means that we couldn't optimize the | 1578 // If the result was -1 it means that we couldn't optimize the |
1579 // function. Just return and continue in the unoptimized version. | 1579 // function. Just return and continue in the unoptimized version. |
1580 NearLabel skip; | 1580 Label skip; |
1581 __ cmp(Operand(eax), Immediate(Smi::FromInt(-1))); | 1581 __ cmp(Operand(eax), Immediate(Smi::FromInt(-1))); |
1582 __ j(not_equal, &skip); | 1582 __ j(not_equal, &skip, Label::kNear); |
1583 __ ret(0); | 1583 __ ret(0); |
1584 | 1584 |
1585 // If we decide not to perform on-stack replacement we perform a | 1585 // If we decide not to perform on-stack replacement we perform a |
1586 // stack guard check to enable interrupts. | 1586 // stack guard check to enable interrupts. |
1587 __ bind(&stack_check); | 1587 __ bind(&stack_check); |
1588 NearLabel ok; | 1588 Label ok; |
1589 ExternalReference stack_limit = | 1589 ExternalReference stack_limit = |
1590 ExternalReference::address_of_stack_limit(masm->isolate()); | 1590 ExternalReference::address_of_stack_limit(masm->isolate()); |
1591 __ cmp(esp, Operand::StaticVariable(stack_limit)); | 1591 __ cmp(esp, Operand::StaticVariable(stack_limit)); |
1592 __ j(above_equal, &ok, taken); | 1592 __ j(above_equal, &ok, taken, Label::kNear); |
1593 StackCheckStub stub; | 1593 StackCheckStub stub; |
1594 __ TailCallStub(&stub); | 1594 __ TailCallStub(&stub); |
1595 __ Abort("Unreachable code: returned from tail call."); | 1595 __ Abort("Unreachable code: returned from tail call."); |
1596 __ bind(&ok); | 1596 __ bind(&ok); |
1597 __ ret(0); | 1597 __ ret(0); |
1598 | 1598 |
1599 __ bind(&skip); | 1599 __ bind(&skip); |
1600 // Untag the AST id and push it on the stack. | 1600 // Untag the AST id and push it on the stack. |
1601 __ SmiUntag(eax); | 1601 __ SmiUntag(eax); |
1602 __ push(eax); | 1602 __ push(eax); |
1603 | 1603 |
1604 // Generate the code for doing the frame-to-frame translation using | 1604 // Generate the code for doing the frame-to-frame translation using |
1605 // the deoptimizer infrastructure. | 1605 // the deoptimizer infrastructure. |
1606 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); | 1606 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); |
1607 generator.Generate(); | 1607 generator.Generate(); |
1608 } | 1608 } |
1609 | 1609 |
1610 | 1610 |
1611 #undef __ | 1611 #undef __ |
1612 } | 1612 } |
1613 } // namespace v8::internal | 1613 } // namespace v8::internal |
1614 | 1614 |
1615 #endif // V8_TARGET_ARCH_IA32 | 1615 #endif // V8_TARGET_ARCH_IA32 |
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