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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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2804 __ CallRuntime(Runtime::kNumberAlloc, 0); | 2804 __ CallRuntime(Runtime::kNumberAlloc, 0); |
2805 __ mov(r4, Operand(r0)); | 2805 __ mov(r4, Operand(r0)); |
2806 | 2806 |
2807 __ bind(&heapnumber_allocated); | 2807 __ bind(&heapnumber_allocated); |
2808 | 2808 |
2809 // Convert 32 random bits in r0 to 0.(32 random bits) in a double | 2809 // Convert 32 random bits in r0 to 0.(32 random bits) in a double |
2810 // by computing: | 2810 // by computing: |
2811 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). | 2811 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
2812 if (isolate()->cpu_features()->IsSupported(VFP3)) { | 2812 if (isolate()->cpu_features()->IsSupported(VFP3)) { |
2813 __ PrepareCallCFunction(0, r1); | 2813 __ PrepareCallCFunction(0, r1); |
2814 __ CallCFunction(ExternalReference::random_uint32_function(), 0); | 2814 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 0); |
2815 | 2815 |
2816 CpuFeatures::Scope scope(VFP3); | 2816 CpuFeatures::Scope scope(VFP3); |
2817 // 0x41300000 is the top half of 1.0 x 2^20 as a double. | 2817 // 0x41300000 is the top half of 1.0 x 2^20 as a double. |
2818 // Create this constant using mov/orr to avoid PC relative load. | 2818 // Create this constant using mov/orr to avoid PC relative load. |
2819 __ mov(r1, Operand(0x41000000)); | 2819 __ mov(r1, Operand(0x41000000)); |
2820 __ orr(r1, r1, Operand(0x300000)); | 2820 __ orr(r1, r1, Operand(0x300000)); |
2821 // Move 0x41300000xxxxxxxx (x = random bits) to VFP. | 2821 // Move 0x41300000xxxxxxxx (x = random bits) to VFP. |
2822 __ vmov(d7, r0, r1); | 2822 __ vmov(d7, r0, r1); |
2823 // Move 0x4130000000000000 to VFP. | 2823 // Move 0x4130000000000000 to VFP. |
2824 __ mov(r0, Operand(0, RelocInfo::NONE)); | 2824 __ mov(r0, Operand(0, RelocInfo::NONE)); |
2825 __ vmov(d8, r0, r1); | 2825 __ vmov(d8, r0, r1); |
2826 // Subtract and store the result in the heap number. | 2826 // Subtract and store the result in the heap number. |
2827 __ vsub(d7, d7, d8); | 2827 __ vsub(d7, d7, d8); |
2828 __ sub(r0, r4, Operand(kHeapObjectTag)); | 2828 __ sub(r0, r4, Operand(kHeapObjectTag)); |
2829 __ vstr(d7, r0, HeapNumber::kValueOffset); | 2829 __ vstr(d7, r0, HeapNumber::kValueOffset); |
2830 __ mov(r0, r4); | 2830 __ mov(r0, r4); |
2831 } else { | 2831 } else { |
2832 __ mov(r0, Operand(r4)); | 2832 __ mov(r0, Operand(r4)); |
2833 __ PrepareCallCFunction(1, r1); | 2833 __ PrepareCallCFunction(1, r1); |
2834 __ CallCFunction( | 2834 __ CallCFunction( |
2835 ExternalReference::fill_heap_number_with_random_function(), 1); | 2835 ExternalReference::fill_heap_number_with_random_function(isolate()), 1); |
2836 } | 2836 } |
2837 | 2837 |
2838 context()->Plug(r0); | 2838 context()->Plug(r0); |
2839 } | 2839 } |
2840 | 2840 |
2841 | 2841 |
2842 void FullCodeGenerator::EmitSubString(ZoneList<Expression*>* args) { | 2842 void FullCodeGenerator::EmitSubString(ZoneList<Expression*>* args) { |
2843 // Load the arguments on the stack and call the stub. | 2843 // Load the arguments on the stack and call the stub. |
2844 SubStringStub stub; | 2844 SubStringStub stub; |
2845 ASSERT(args->length() == 3); | 2845 ASSERT(args->length() == 3); |
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4312 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. | 4312 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. |
4313 __ add(pc, r1, Operand(masm_->CodeObject())); | 4313 __ add(pc, r1, Operand(masm_->CodeObject())); |
4314 } | 4314 } |
4315 | 4315 |
4316 | 4316 |
4317 #undef __ | 4317 #undef __ |
4318 | 4318 |
4319 } } // namespace v8::internal | 4319 } } // namespace v8::internal |
4320 | 4320 |
4321 #endif // V8_TARGET_ARCH_ARM | 4321 #endif // V8_TARGET_ARCH_ARM |
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