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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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2768 __ CallRuntime(Runtime::kNumberAlloc, 0); | 2768 __ CallRuntime(Runtime::kNumberAlloc, 0); |
2769 __ mov(s0, v0); // Save result in s0, so it is saved thru CFunc call. | 2769 __ mov(s0, v0); // Save result in s0, so it is saved thru CFunc call. |
2770 | 2770 |
2771 __ bind(&heapnumber_allocated); | 2771 __ bind(&heapnumber_allocated); |
2772 | 2772 |
2773 // Convert 32 random bits in v0 to 0.(32 random bits) in a double | 2773 // Convert 32 random bits in v0 to 0.(32 random bits) in a double |
2774 // by computing: | 2774 // by computing: |
2775 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). | 2775 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
2776 if (CpuFeatures::IsSupported(FPU)) { | 2776 if (CpuFeatures::IsSupported(FPU)) { |
2777 __ PrepareCallCFunction(1, a0); | 2777 __ PrepareCallCFunction(1, a0); |
2778 __ li(a0, Operand(ExternalReference::isolate_address())); | 2778 __ lw(a0, ContextOperand(cp, Context::GLOBAL_INDEX)); |
| 2779 __ lw(a0, FieldOperand(a0, GlobalObject::kGlobalContextOffset)); |
2779 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); | 2780 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
2780 | 2781 |
2781 | 2782 |
2782 CpuFeatures::Scope scope(FPU); | 2783 CpuFeatures::Scope scope(FPU); |
2783 // 0x41300000 is the top half of 1.0 x 2^20 as a double. | 2784 // 0x41300000 is the top half of 1.0 x 2^20 as a double. |
2784 __ li(a1, Operand(0x41300000)); | 2785 __ li(a1, Operand(0x41300000)); |
2785 // Move 0x41300000xxxxxxxx (x = random bits in v0) to FPU. | 2786 // Move 0x41300000xxxxxxxx (x = random bits in v0) to FPU. |
2786 __ Move(f12, v0, a1); | 2787 __ Move(f12, v0, a1); |
2787 // Move 0x4130000000000000 to FPU. | 2788 // Move 0x4130000000000000 to FPU. |
2788 __ Move(f14, zero_reg, a1); | 2789 __ Move(f14, zero_reg, a1); |
2789 // Subtract and store the result in the heap number. | 2790 // Subtract and store the result in the heap number. |
2790 __ sub_d(f0, f12, f14); | 2791 __ sub_d(f0, f12, f14); |
2791 __ sdc1(f0, MemOperand(s0, HeapNumber::kValueOffset - kHeapObjectTag)); | 2792 __ sdc1(f0, MemOperand(s0, HeapNumber::kValueOffset - kHeapObjectTag)); |
2792 __ mov(v0, s0); | 2793 __ mov(v0, s0); |
2793 } else { | 2794 } else { |
2794 __ PrepareCallCFunction(2, a0); | 2795 __ PrepareCallCFunction(2, a0); |
2795 __ mov(a0, s0); | 2796 __ mov(a0, s0); |
2796 __ li(a1, Operand(ExternalReference::isolate_address())); | 2797 __ lw(a1, ContextOperand(cp, Context::GLOBAL_INDEX)); |
| 2798 __ lw(a1, FieldOperand(a1, GlobalObject::kGlobalContextOffset)); |
2797 __ CallCFunction( | 2799 __ CallCFunction( |
2798 ExternalReference::fill_heap_number_with_random_function(isolate()), 2); | 2800 ExternalReference::fill_heap_number_with_random_function(isolate()), 2); |
2799 } | 2801 } |
2800 | 2802 |
2801 context()->Plug(v0); | 2803 context()->Plug(v0); |
2802 } | 2804 } |
2803 | 2805 |
2804 | 2806 |
2805 void FullCodeGenerator::EmitSubString(ZoneList<Expression*>* args) { | 2807 void FullCodeGenerator::EmitSubString(ZoneList<Expression*>* args) { |
2806 // Load the arguments on the stack and call the stub. | 2808 // Load the arguments on the stack and call the stub. |
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4251 *context_length = 0; | 4253 *context_length = 0; |
4252 return previous_; | 4254 return previous_; |
4253 } | 4255 } |
4254 | 4256 |
4255 | 4257 |
4256 #undef __ | 4258 #undef __ |
4257 | 4259 |
4258 } } // namespace v8::internal | 4260 } } // namespace v8::internal |
4259 | 4261 |
4260 #endif // V8_TARGET_ARCH_MIPS | 4262 #endif // V8_TARGET_ARCH_MIPS |
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