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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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| 3400 #ifdef _WIN64 | 3400 #ifdef _WIN64 | 
| 3401   const int kShadowSpace = 4; | 3401   const int kShadowSpace = 4; | 
| 3402   arg_stack_space += kShadowSpace; | 3402   arg_stack_space += kShadowSpace; | 
| 3403 #endif | 3403 #endif | 
| 3404   // Optionally save all XMM registers. | 3404   // Optionally save all XMM registers. | 
| 3405   if (save_doubles) { | 3405   if (save_doubles) { | 
| 3406     int space = XMMRegister::kNumRegisters * kDoubleSize + | 3406     int space = XMMRegister::kNumRegisters * kDoubleSize + | 
| 3407         arg_stack_space * kPointerSize; | 3407         arg_stack_space * kPointerSize; | 
| 3408     subq(rsp, Immediate(space)); | 3408     subq(rsp, Immediate(space)); | 
| 3409     int offset = -2 * kPointerSize; | 3409     int offset = -2 * kPointerSize; | 
| 3410     for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { | 3410     for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { | 
| 3411       XMMRegister reg = XMMRegister::FromAllocationIndex(i); | 3411       XMMRegister reg = XMMRegister::FromAllocationIndex(i); | 
| 3412       movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); | 3412       movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); | 
| 3413     } | 3413     } | 
| 3414   } else if (arg_stack_space > 0) { | 3414   } else if (arg_stack_space > 0) { | 
| 3415     subq(rsp, Immediate(arg_stack_space * kPointerSize)); | 3415     subq(rsp, Immediate(arg_stack_space * kPointerSize)); | 
| 3416   } | 3416   } | 
| 3417 | 3417 | 
| 3418   // Get the required frame alignment for the OS. | 3418   // Get the required frame alignment for the OS. | 
| 3419   const int kFrameAlignment = OS::ActivationFrameAlignment(); | 3419   const int kFrameAlignment = OS::ActivationFrameAlignment(); | 
| 3420   if (kFrameAlignment > 0) { | 3420   if (kFrameAlignment > 0) { | 
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| 3444   EnterExitFramePrologue(false); | 3444   EnterExitFramePrologue(false); | 
| 3445   EnterExitFrameEpilogue(arg_stack_space, false); | 3445   EnterExitFrameEpilogue(arg_stack_space, false); | 
| 3446 } | 3446 } | 
| 3447 | 3447 | 
| 3448 | 3448 | 
| 3449 void MacroAssembler::LeaveExitFrame(bool save_doubles) { | 3449 void MacroAssembler::LeaveExitFrame(bool save_doubles) { | 
| 3450   // Registers: | 3450   // Registers: | 
| 3451   // r15 : argv | 3451   // r15 : argv | 
| 3452   if (save_doubles) { | 3452   if (save_doubles) { | 
| 3453     int offset = -2 * kPointerSize; | 3453     int offset = -2 * kPointerSize; | 
| 3454     for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { | 3454     for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { | 
| 3455       XMMRegister reg = XMMRegister::FromAllocationIndex(i); | 3455       XMMRegister reg = XMMRegister::FromAllocationIndex(i); | 
| 3456       movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); | 3456       movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); | 
| 3457     } | 3457     } | 
| 3458   } | 3458   } | 
| 3459   // Get the return address from the stack and restore the frame pointer. | 3459   // Get the return address from the stack and restore the frame pointer. | 
| 3460   movq(rcx, Operand(rbp, 1 * kPointerSize)); | 3460   movq(rcx, Operand(rbp, 1 * kPointerSize)); | 
| 3461   movq(rbp, Operand(rbp, 0 * kPointerSize)); | 3461   movq(rbp, Operand(rbp, 0 * kPointerSize)); | 
| 3462 | 3462 | 
| 3463   // Drop everything up to and including the arguments and the receiver | 3463   // Drop everything up to and including the arguments and the receiver | 
| 3464   // from the caller stack. | 3464   // from the caller stack. | 
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| 4560 | 4560 | 
| 4561   movq(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); | 4561   movq(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); | 
| 4562   cmpq(rcx, null_value); | 4562   cmpq(rcx, null_value); | 
| 4563   j(not_equal, &next); | 4563   j(not_equal, &next); | 
| 4564 } | 4564 } | 
| 4565 | 4565 | 
| 4566 | 4566 | 
| 4567 } }  // namespace v8::internal | 4567 } }  // namespace v8::internal | 
| 4568 | 4568 | 
| 4569 #endif  // V8_TARGET_ARCH_X64 | 4569 #endif  // V8_TARGET_ARCH_X64 | 
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