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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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3342 VisitForStackValue(args->at(2)); | 3342 VisitForStackValue(args->at(2)); |
3343 __ CallRuntime(Runtime::kLog, 2); | 3343 __ CallRuntime(Runtime::kLog, 2); |
3344 } | 3344 } |
3345 | 3345 |
3346 // Finally, we're expected to leave a value on the top of the stack. | 3346 // Finally, we're expected to leave a value on the top of the stack. |
3347 __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); | 3347 __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
3348 context()->Plug(r0); | 3348 context()->Plug(r0); |
3349 } | 3349 } |
3350 | 3350 |
3351 | 3351 |
3352 void FullCodeGenerator::EmitRandomHeapNumber(CallRuntime* expr) { | |
3353 ASSERT(expr->arguments()->length() == 0); | |
3354 Label slow_allocate_heapnumber; | |
3355 Label heapnumber_allocated; | |
3356 | |
3357 __ LoadRoot(r6, Heap::kHeapNumberMapRootIndex); | |
3358 __ AllocateHeapNumber(r4, r1, r2, r6, &slow_allocate_heapnumber); | |
3359 __ jmp(&heapnumber_allocated); | |
3360 | |
3361 __ bind(&slow_allocate_heapnumber); | |
3362 // Allocate a heap number. | |
3363 __ CallRuntime(Runtime::kNumberAlloc, 0); | |
3364 __ mov(r4, Operand(r0)); | |
3365 | |
3366 __ bind(&heapnumber_allocated); | |
3367 | |
3368 // Convert 32 random bits in r0 to 0.(32 random bits) in a double | |
3369 // by computing: | |
3370 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). | |
3371 __ PrepareCallCFunction(1, r0); | |
3372 __ ldr(r0, | |
3373 ContextOperand(context_register(), Context::GLOBAL_OBJECT_INDEX)); | |
3374 __ ldr(r0, FieldMemOperand(r0, GlobalObject::kNativeContextOffset)); | |
3375 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); | |
3376 | |
3377 // 0x41300000 is the top half of 1.0 x 2^20 as a double. | |
3378 // Create this constant using mov/orr to avoid PC relative load. | |
3379 __ mov(r1, Operand(0x41000000)); | |
3380 __ orr(r1, r1, Operand(0x300000)); | |
3381 // Move 0x41300000xxxxxxxx (x = random bits) to VFP. | |
3382 __ vmov(d7, r0, r1); | |
3383 // Move 0x4130000000000000 to VFP. | |
3384 __ mov(r0, Operand::Zero()); | |
3385 __ vmov(d8, r0, r1); | |
3386 // Subtract and store the result in the heap number. | |
3387 __ vsub(d7, d7, d8); | |
3388 __ sub(r0, r4, Operand(kHeapObjectTag)); | |
3389 __ vstr(d7, r0, HeapNumber::kValueOffset); | |
3390 __ mov(r0, r4); | |
3391 | |
3392 context()->Plug(r0); | |
3393 } | |
3394 | |
3395 | |
3396 void FullCodeGenerator::EmitSubString(CallRuntime* expr) { | 3352 void FullCodeGenerator::EmitSubString(CallRuntime* expr) { |
3397 // Load the arguments on the stack and call the stub. | 3353 // Load the arguments on the stack and call the stub. |
3398 SubStringStub stub; | 3354 SubStringStub stub; |
3399 ZoneList<Expression*>* args = expr->arguments(); | 3355 ZoneList<Expression*>* args = expr->arguments(); |
3400 ASSERT(args->length() == 3); | 3356 ASSERT(args->length() == 3); |
3401 VisitForStackValue(args->at(0)); | 3357 VisitForStackValue(args->at(0)); |
3402 VisitForStackValue(args->at(1)); | 3358 VisitForStackValue(args->at(1)); |
3403 VisitForStackValue(args->at(2)); | 3359 VisitForStackValue(args->at(2)); |
3404 __ CallStub(&stub); | 3360 __ CallStub(&stub); |
3405 context()->Plug(r0); | 3361 context()->Plug(r0); |
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4978 ASSERT(Memory::uint32_at(interrupt_address_pointer) == | 4934 ASSERT(Memory::uint32_at(interrupt_address_pointer) == |
4979 reinterpret_cast<uint32_t>( | 4935 reinterpret_cast<uint32_t>( |
4980 isolate->builtins()->OsrAfterStackCheck()->entry())); | 4936 isolate->builtins()->OsrAfterStackCheck()->entry())); |
4981 return OSR_AFTER_STACK_CHECK; | 4937 return OSR_AFTER_STACK_CHECK; |
4982 } | 4938 } |
4983 | 4939 |
4984 | 4940 |
4985 } } // namespace v8::internal | 4941 } } // namespace v8::internal |
4986 | 4942 |
4987 #endif // V8_TARGET_ARCH_ARM | 4943 #endif // V8_TARGET_ARCH_ARM |
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