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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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694 int stack_space) { | 694 int stack_space) { |
695 Label empty_result; | 695 Label empty_result; |
696 Label prologue; | 696 Label prologue; |
697 Label promote_scheduled_exception; | 697 Label promote_scheduled_exception; |
698 Label delete_allocated_handles; | 698 Label delete_allocated_handles; |
699 Label leave_exit_frame; | 699 Label leave_exit_frame; |
700 Label write_back; | 700 Label write_back; |
701 | 701 |
702 Factory* factory = isolate()->factory(); | 702 Factory* factory = isolate()->factory(); |
703 ExternalReference next_address = | 703 ExternalReference next_address = |
704 ExternalReference::handle_scope_next_address(); | 704 ExternalReference::handle_scope_next_address(isolate()); |
705 const int kNextOffset = 0; | 705 const int kNextOffset = 0; |
706 const int kLimitOffset = Offset( | 706 const int kLimitOffset = Offset( |
707 ExternalReference::handle_scope_limit_address(), | 707 ExternalReference::handle_scope_limit_address(isolate()), |
708 next_address); | 708 next_address); |
709 const int kLevelOffset = Offset( | 709 const int kLevelOffset = Offset( |
710 ExternalReference::handle_scope_level_address(), | 710 ExternalReference::handle_scope_level_address(isolate()), |
711 next_address); | 711 next_address); |
712 ExternalReference scheduled_exception_address = | 712 ExternalReference scheduled_exception_address = |
713 ExternalReference::scheduled_exception_address(isolate()); | 713 ExternalReference::scheduled_exception_address(isolate()); |
714 | 714 |
715 // Allocate HandleScope in callee-save registers. | 715 // Allocate HandleScope in callee-save registers. |
716 Register prev_next_address_reg = r14; | 716 Register prev_next_address_reg = r14; |
717 Register prev_limit_reg = rbx; | 717 Register prev_limit_reg = rbx; |
718 Register base_reg = r15; | 718 Register base_reg = r15; |
719 movq(base_reg, next_address); | 719 movq(base_reg, next_address); |
720 movq(prev_next_address_reg, Operand(base_reg, kNextOffset)); | 720 movq(prev_next_address_reg, Operand(base_reg, kNextOffset)); |
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4619 j(greater, &no_info_available); | 4619 j(greater, &no_info_available); |
4620 CompareRoot(MemOperand(scratch_reg, -AllocationSiteInfo::kSize), | 4620 CompareRoot(MemOperand(scratch_reg, -AllocationSiteInfo::kSize), |
4621 Heap::kAllocationSiteInfoMapRootIndex); | 4621 Heap::kAllocationSiteInfoMapRootIndex); |
4622 bind(&no_info_available); | 4622 bind(&no_info_available); |
4623 } | 4623 } |
4624 | 4624 |
4625 | 4625 |
4626 } } // namespace v8::internal | 4626 } } // namespace v8::internal |
4627 | 4627 |
4628 #endif // V8_TARGET_ARCH_X64 | 4628 #endif // V8_TARGET_ARCH_X64 |
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