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Issue 6691054: [Arguments] Merge (7442,7496] from bleeding_edge. (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/arguments
Patch Set: Created 9 years, 8 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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6413 6413
6414 __ bind(&slow_allocate_heapnumber); 6414 __ bind(&slow_allocate_heapnumber);
6415 // Allocate a heap number. 6415 // Allocate a heap number.
6416 __ CallRuntime(Runtime::kNumberAlloc, 0); 6416 __ CallRuntime(Runtime::kNumberAlloc, 0);
6417 __ movq(rbx, rax); 6417 __ movq(rbx, rax);
6418 6418
6419 __ bind(&heapnumber_allocated); 6419 __ bind(&heapnumber_allocated);
6420 6420
6421 // Return a random uint32 number in rax. 6421 // Return a random uint32 number in rax.
6422 // The fresh HeapNumber is in rbx, which is callee-save on both x64 ABIs. 6422 // The fresh HeapNumber is in rbx, which is callee-save on both x64 ABIs.
6423 __ PrepareCallCFunction(0); 6423 __ PrepareCallCFunction(1);
6424 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 0); 6424 #ifdef _WIN64
6425 __ LoadAddress(rcx, ExternalReference::isolate_address());
6426 #else
6427 __ LoadAddress(rdi, ExternalReference::isolate_address());
6428 #endif
6429 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1);
6425 6430
6426 // Convert 32 random bits in rax to 0.(32 random bits) in a double 6431 // Convert 32 random bits in rax to 0.(32 random bits) in a double
6427 // by computing: 6432 // by computing:
6428 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). 6433 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)).
6429 __ movl(rcx, Immediate(0x49800000)); // 1.0 x 2^20 as single. 6434 __ movl(rcx, Immediate(0x49800000)); // 1.0 x 2^20 as single.
6430 __ movd(xmm1, rcx); 6435 __ movd(xmm1, rcx);
6431 __ movd(xmm0, rax); 6436 __ movd(xmm0, rax);
6432 __ cvtss2sd(xmm1, xmm1); 6437 __ cvtss2sd(xmm1, xmm1);
6433 __ xorpd(xmm0, xmm1); 6438 __ xorpd(xmm0, xmm1);
6434 __ subsd(xmm0, xmm1); 6439 __ subsd(xmm0, xmm1);
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8725 8730
8726 #ifdef _WIN64 8731 #ifdef _WIN64
8727 typedef double (*ModuloFunction)(double, double); 8732 typedef double (*ModuloFunction)(double, double);
8728 // Define custom fmod implementation. 8733 // Define custom fmod implementation.
8729 ModuloFunction CreateModuloFunction() { 8734 ModuloFunction CreateModuloFunction() {
8730 size_t actual_size; 8735 size_t actual_size;
8731 byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize, 8736 byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
8732 &actual_size, 8737 &actual_size,
8733 true)); 8738 true));
8734 CHECK(buffer); 8739 CHECK(buffer);
8735 Assembler masm(buffer, static_cast<int>(actual_size)); 8740 Assembler masm(NULL, buffer, static_cast<int>(actual_size));
8736 // Generated code is put into a fixed, unmovable, buffer, and not into 8741 // Generated code is put into a fixed, unmovable, buffer, and not into
8737 // the V8 heap. We can't, and don't, refer to any relocatable addresses 8742 // the V8 heap. We can't, and don't, refer to any relocatable addresses
8738 // (e.g. the JavaScript nan-object). 8743 // (e.g. the JavaScript nan-object).
8739 8744
8740 // Windows 64 ABI passes double arguments in xmm0, xmm1 and 8745 // Windows 64 ABI passes double arguments in xmm0, xmm1 and
8741 // returns result in xmm0. 8746 // returns result in xmm0.
8742 // Argument backing space is allocated on the stack above 8747 // Argument backing space is allocated on the stack above
8743 // the return address. 8748 // the return address.
8744 8749
8745 // Compute x mod y. 8750 // Compute x mod y.
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8811 } 8816 }
8812 8817
8813 #endif 8818 #endif
8814 8819
8815 8820
8816 #undef __ 8821 #undef __
8817 8822
8818 } } // namespace v8::internal 8823 } } // namespace v8::internal
8819 8824
8820 #endif // V8_TARGET_ARCH_X64 8825 #endif // V8_TARGET_ARCH_X64
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