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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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508 } | 508 } |
509 | 509 |
510 | 510 |
511 void Builtins::Generate_FunctionApply(MacroAssembler* masm) { | 511 void Builtins::Generate_FunctionApply(MacroAssembler* masm) { |
512 __ EnterInternalFrame(); | 512 __ EnterInternalFrame(); |
513 | 513 |
514 __ push(Operand(ebp, 4 * kPointerSize)); // push this | 514 __ push(Operand(ebp, 4 * kPointerSize)); // push this |
515 __ push(Operand(ebp, 2 * kPointerSize)); // push arguments | 515 __ push(Operand(ebp, 2 * kPointerSize)); // push arguments |
516 __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); | 516 __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); |
517 | 517 |
518 // We need to catch preemptions right here, otherwise an unlucky preemption | |
519 // could show up as a failed apply. | |
520 ExternalReference stack_guard_limit = | |
521 ExternalReference::address_of_stack_guard_limit(); | |
522 Label retry_preemption; | |
523 Label no_preemption; | |
524 __ bind(&retry_preemption); | |
525 __ mov(edi, Operand::StaticVariable(stack_guard_limit)); | |
526 __ cmp(esp, Operand(edi)); | |
527 __ j(above, &no_preemption, taken); | |
Søren Thygesen Gjesse
2008/09/26 10:55:19
void Ia32CodeGenerator::CheckStack() uses above_eq
| |
528 | |
529 // Preemption! | |
530 // Because builtins always remove the receiver from the stack, we | |
531 // have to fake one to avoid underflowing the stack. | |
532 __ push(eax); | |
533 __ push(Immediate(Smi::FromInt(0))); | |
534 | |
535 // Do call to runtime routine. | |
536 __ CallRuntime(Runtime::kStackGuard, 1); | |
537 __ pop(eax); | |
538 __ jmp(&retry_preemption); | |
539 | |
540 __ bind(&no_preemption); | |
541 | |
542 // Keep the stack limit in the edi register from here on. | |
518 // Eagerly check for stack-overflow before pushing all the arguments | 543 // Eagerly check for stack-overflow before pushing all the arguments |
519 // to the stack. | 544 // to the stack. |
520 Label okay; | 545 Label okay; |
521 __ lea(ecx, Operand(esp, -3 * kPointerSize)); // receiver, limit, index | 546 // Make ecx the space we have left. |
547 __ mov(ecx, Operand(esp)); | |
548 __ sub(ecx, Operand(edi)); | |
549 // Make edx the space we need for the array when it is unrolled onto the | |
550 // stack. | |
522 __ mov(edx, Operand(eax)); | 551 __ mov(edx, Operand(eax)); |
523 __ shl(edx, kPointerSizeLog2 - kSmiTagSize); | 552 __ shl(edx, kPointerSizeLog2 - kSmiTagSize); |
524 __ sub(ecx, Operand(edx)); | 553 __ cmp(ecx, Operand(edx)); |
525 ExternalReference stack_guard_limit_address = | |
526 ExternalReference::address_of_stack_guard_limit(); | |
527 __ cmp(ecx, Operand::StaticVariable(stack_guard_limit_address)); | |
528 __ j(greater, &okay, taken); | 554 __ j(greater, &okay, taken); |
529 | 555 |
530 // Too bad: Out of stack space. | 556 // Too bad: Out of stack space. |
531 __ push(Operand(ebp, 4 * kPointerSize)); // push this | 557 __ push(Operand(ebp, 4 * kPointerSize)); // push this |
532 __ push(eax); | 558 __ push(eax); |
533 __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); | 559 __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); |
534 __ bind(&okay); | 560 __ bind(&okay); |
535 | 561 |
536 // Push current index and limit. | 562 // Push current index and limit. |
537 const int kLimitOffset = | 563 const int kLimitOffset = |
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876 // Register state for stub CallFunction (from CallFunctionStub in ic-ia32.cc). | 902 // Register state for stub CallFunction (from CallFunctionStub in ic-ia32.cc). |
877 // ----------- S t a t e ------------- | 903 // ----------- S t a t e ------------- |
878 // No registers used on entry. | 904 // No registers used on entry. |
879 // ----------------------------------- | 905 // ----------------------------------- |
880 Generate_DebugBreakCallHelper(masm, 0, false); | 906 Generate_DebugBreakCallHelper(masm, 0, false); |
881 } | 907 } |
882 | 908 |
883 #undef __ | 909 #undef __ |
884 | 910 |
885 } } // namespace v8::internal | 911 } } // namespace v8::internal |
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