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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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498 __ push(rax); | 498 __ push(rax); |
499 | 499 |
500 // Push the function to invoke on the stack. | 500 // Push the function to invoke on the stack. |
501 __ push(rdi); | 501 __ push(rdi); |
502 | 502 |
503 // Try to allocate the object without transitioning into C code. If any of the | 503 // Try to allocate the object without transitioning into C code. If any of the |
504 // preconditions is not met, the code bails out to the runtime call. | 504 // preconditions is not met, the code bails out to the runtime call. |
505 Label rt_call, allocated; | 505 Label rt_call, allocated; |
506 if (FLAG_inline_new) { | 506 if (FLAG_inline_new) { |
507 Label undo_allocation; | 507 Label undo_allocation; |
508 // TODO(X64): Enable debugger support, using debug_step_in_fp. | 508 |
| 509 #ifdef ENABLE_DEBUGGER_SUPPORT |
| 510 ExternalReference debug_step_in_fp = |
| 511 ExternalReference::debug_step_in_fp_address(); |
| 512 __ movq(kScratchRegister, debug_step_in_fp); |
| 513 __ cmpq(Operand(kScratchRegister, 0), Immediate(0)); |
| 514 __ j(not_equal, &rt_call); |
| 515 #endif |
509 | 516 |
510 // Verified that the constructor is a JSFunction. | 517 // Verified that the constructor is a JSFunction. |
511 // Load the initial map and verify that it is in fact a map. | 518 // Load the initial map and verify that it is in fact a map. |
512 // rdi: constructor | 519 // rdi: constructor |
513 __ movq(rax, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); | 520 __ movq(rax, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
514 // Will both indicate a NULL and a Smi | 521 // Will both indicate a NULL and a Smi |
515 __ testl(rax, Immediate(kSmiTagMask)); | 522 __ testl(rax, Immediate(kSmiTagMask)); |
516 __ j(zero, &rt_call); | 523 __ j(zero, &rt_call); |
517 // rdi: constructor | 524 // rdi: constructor |
518 // rax: initial map (if proven valid below) | 525 // rax: initial map (if proven valid below) |
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816 __ movq(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0)); | 823 __ movq(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0)); |
817 __ push(Operand(kScratchRegister, 0)); // dereference handle | 824 __ push(Operand(kScratchRegister, 0)); // dereference handle |
818 __ addq(rcx, Immediate(1)); | 825 __ addq(rcx, Immediate(1)); |
819 __ bind(&entry); | 826 __ bind(&entry); |
820 __ cmpq(rcx, rax); | 827 __ cmpq(rcx, rax); |
821 __ j(not_equal, &loop); | 828 __ j(not_equal, &loop); |
822 | 829 |
823 // Invoke the code. | 830 // Invoke the code. |
824 if (is_construct) { | 831 if (is_construct) { |
825 // Expects rdi to hold function pointer. | 832 // Expects rdi to hold function pointer. |
826 __ movq(kScratchRegister, | 833 __ Call(Handle<Code>(Builtins::builtin(Builtins::JSConstructCall)), |
827 Handle<Code>(Builtins::builtin(Builtins::JSConstructCall)), | |
828 RelocInfo::CODE_TARGET); | 834 RelocInfo::CODE_TARGET); |
829 __ call(kScratchRegister); | |
830 } else { | 835 } else { |
831 ParameterCount actual(rax); | 836 ParameterCount actual(rax); |
832 // Function must be in rdi. | 837 // Function must be in rdi. |
833 __ InvokeFunction(rdi, actual, CALL_FUNCTION); | 838 __ InvokeFunction(rdi, actual, CALL_FUNCTION); |
834 } | 839 } |
835 | 840 |
836 // Exit the JS frame. Notice that this also removes the empty | 841 // Exit the JS frame. Notice that this also removes the empty |
837 // context and the function left on the stack by the code | 842 // context and the function left on the stack by the code |
838 // invocation. | 843 // invocation. |
839 __ LeaveInternalFrame(); | 844 __ LeaveInternalFrame(); |
840 // TODO(X64): Is argument correct? Is there a receiver to remove? | 845 // TODO(X64): Is argument correct? Is there a receiver to remove? |
841 __ ret(1 * kPointerSize); // remove receiver | 846 __ ret(1 * kPointerSize); // remove receiver |
842 } | 847 } |
843 | 848 |
844 | 849 |
845 void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { | 850 void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
846 Generate_JSEntryTrampolineHelper(masm, false); | 851 Generate_JSEntryTrampolineHelper(masm, false); |
847 } | 852 } |
848 | 853 |
849 | 854 |
850 void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { | 855 void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
851 Generate_JSEntryTrampolineHelper(masm, true); | 856 Generate_JSEntryTrampolineHelper(masm, true); |
852 } | 857 } |
853 | 858 |
854 } } // namespace v8::internal | 859 } } // namespace v8::internal |
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