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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 #include "vm/globals.h" | 5 #include "vm/globals.h" |
| 6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
| 7 | 7 |
| 8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
| 9 #include "vm/assembler_macros.h" | 9 #include "vm/assembler_macros.h" |
| 10 #include "vm/compiler.h" | 10 #include "vm/compiler.h" |
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| 556 // Restore result into EBX. | 556 // Restore result into EBX. |
| 557 __ movl(EBX, Address(EBP, -1 * kWordSize)); | 557 __ movl(EBX, Address(EBP, -1 * kWordSize)); |
| 558 } | 558 } |
| 559 // Code above cannot cause GC. | 559 // Code above cannot cause GC. |
| 560 __ LeaveFrame(); | 560 __ LeaveFrame(); |
| 561 __ movl(EBP, EAX); | 561 __ movl(EBP, EAX); |
| 562 | 562 |
| 563 // Frame is fully rewritten at this point and it is safe to perform a GC. | 563 // Frame is fully rewritten at this point and it is safe to perform a GC. |
| 564 // Materialize any objects that were deferred by FillFrame because they | 564 // Materialize any objects that were deferred by FillFrame because they |
| 565 // require allocation. | 565 // require allocation. |
| 566 __ EnterFrame(0); | 566 AssemblerMacros::EnterStubFrame(assembler); |
| 567 if (preserve_eax) { | 567 if (preserve_eax) { |
| 568 __ pushl(EBX); // Preserve result, it will be GC-d here. | 568 __ pushl(EBX); // Preserve result, it will be GC-d here. |
| 569 } | 569 } |
| 570 __ CallRuntime(kDeoptimizeMaterializeDoublesRuntimeEntry); | 570 __ CallRuntime(kDeoptimizeMaterializeDoublesRuntimeEntry); |
| 571 if (preserve_eax) { | 571 if (preserve_eax) { |
| 572 __ popl(EAX); // Restore result. | 572 __ popl(EAX); // Restore result. |
| 573 } | 573 } |
| 574 __ LeaveFrame(); | 574 __ LeaveFrame(); |
| 575 __ ret(); | 575 __ ret(); |
| 576 } | 576 } |
| 577 | 577 |
| 578 |
| 578 // TOS: return address + call-instruction-size (5 bytes). | 579 // TOS: return address + call-instruction-size (5 bytes). |
| 579 // EAX: result, must be preserved | 580 // EAX: result, must be preserved |
| 580 void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) { | 581 void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) { |
| 581 // Correct return address to point just after the call that is being | 582 // Correct return address to point just after the call that is being |
| 582 // deoptimized. | 583 // deoptimized. |
| 583 __ popl(EBX); | 584 __ popl(EBX); |
| 584 __ subl(EBX, Immediate(CallPattern::InstructionLength())); | 585 __ subl(EBX, Immediate(CallPattern::InstructionLength())); |
| 585 __ pushl(EBX); | 586 __ pushl(EBX); |
| 586 GenerateDeoptimizationSequence(assembler, true); // Preserve EAX. | 587 GenerateDeoptimizationSequence(assembler, true); // Preserve EAX. |
| 587 } | 588 } |
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| 1960 __ movl(EAX, Address(ESP, 4 * kWordSize)); // Load error object. | 1961 __ movl(EAX, Address(ESP, 4 * kWordSize)); // Load error object. |
| 1961 __ movl(EBP, Address(ESP, 3 * kWordSize)); // Load target frame_pointer. | 1962 __ movl(EBP, Address(ESP, 3 * kWordSize)); // Load target frame_pointer. |
| 1962 __ movl(EBX, Address(ESP, 1 * kWordSize)); // Load target PC into EBX. | 1963 __ movl(EBX, Address(ESP, 1 * kWordSize)); // Load target PC into EBX. |
| 1963 __ movl(ESP, Address(ESP, 2 * kWordSize)); // Load target stack_pointer. | 1964 __ movl(ESP, Address(ESP, 2 * kWordSize)); // Load target stack_pointer. |
| 1964 __ jmp(EBX); // Jump to the exception handler code. | 1965 __ jmp(EBX); // Jump to the exception handler code. |
| 1965 } | 1966 } |
| 1966 | 1967 |
| 1967 } // namespace dart | 1968 } // namespace dart |
| 1968 | 1969 |
| 1969 #endif // defined TARGET_ARCH_IA32 | 1970 #endif // defined TARGET_ARCH_IA32 |
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