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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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3199 testl(result_reg, result_reg); | 3199 testl(result_reg, result_reg); |
3200 j(not_zero, &done, Label::kNear); | 3200 j(not_zero, &done, Label::kNear); |
3201 movmskpd(result_reg, xmm0); | 3201 movmskpd(result_reg, xmm0); |
3202 andl(result_reg, Immediate(1)); | 3202 andl(result_reg, Immediate(1)); |
3203 j(not_zero, lost_precision, dst); | 3203 j(not_zero, lost_precision, dst); |
3204 } | 3204 } |
3205 bind(&done); | 3205 bind(&done); |
3206 } | 3206 } |
3207 | 3207 |
3208 | 3208 |
| 3209 void MacroAssembler::Throw(BailoutReason reason) { |
| 3210 #ifdef DEBUG |
| 3211 const char* msg = GetBailoutReason(reason); |
| 3212 if (msg != NULL) { |
| 3213 RecordComment("Throw message: "); |
| 3214 RecordComment(msg); |
| 3215 } |
| 3216 #endif |
| 3217 |
| 3218 push(rax); |
| 3219 Push(Smi::FromInt(reason)); |
| 3220 if (!has_frame_) { |
| 3221 // We don't actually want to generate a pile of code for this, so just |
| 3222 // claim there is a stack frame, without generating one. |
| 3223 FrameScope scope(this, StackFrame::NONE); |
| 3224 CallRuntime(Runtime::kThrowMessage, 1); |
| 3225 } else { |
| 3226 CallRuntime(Runtime::kThrowMessage, 1); |
| 3227 } |
| 3228 // Control will not return here. |
| 3229 int3(); |
| 3230 } |
| 3231 |
| 3232 |
| 3233 void MacroAssembler::ThrowIf(Condition cc, BailoutReason reason) { |
| 3234 Label L; |
| 3235 j(NegateCondition(cc), &L); |
| 3236 Throw(reason); |
| 3237 // will not return here |
| 3238 bind(&L); |
| 3239 } |
| 3240 |
| 3241 |
3209 void MacroAssembler::LoadInstanceDescriptors(Register map, | 3242 void MacroAssembler::LoadInstanceDescriptors(Register map, |
3210 Register descriptors) { | 3243 Register descriptors) { |
3211 movq(descriptors, FieldOperand(map, Map::kDescriptorsOffset)); | 3244 movq(descriptors, FieldOperand(map, Map::kDescriptorsOffset)); |
3212 } | 3245 } |
3213 | 3246 |
3214 | 3247 |
3215 void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { | 3248 void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
3216 movq(dst, FieldOperand(map, Map::kBitField3Offset)); | 3249 movq(dst, FieldOperand(map, Map::kBitField3Offset)); |
3217 DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); | 3250 DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
3218 } | 3251 } |
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4624 const int kMinimumStackSlots = kRegisterPassedArguments; | 4657 const int kMinimumStackSlots = kRegisterPassedArguments; |
4625 if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; | 4658 if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
4626 return num_arguments; | 4659 return num_arguments; |
4627 #else | 4660 #else |
4628 if (num_arguments < kRegisterPassedArguments) return 0; | 4661 if (num_arguments < kRegisterPassedArguments) return 0; |
4629 return num_arguments - kRegisterPassedArguments; | 4662 return num_arguments - kRegisterPassedArguments; |
4630 #endif | 4663 #endif |
4631 } | 4664 } |
4632 | 4665 |
4633 | 4666 |
| 4667 void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 4668 Register index, |
| 4669 Register value, |
| 4670 uint32_t encoding_mask) { |
| 4671 Label is_object; |
| 4672 JumpIfNotSmi(string, &is_object); |
| 4673 Throw(kNonObject); |
| 4674 bind(&is_object); |
| 4675 |
| 4676 push(value); |
| 4677 movq(value, FieldOperand(string, HeapObject::kMapOffset)); |
| 4678 movzxbq(value, FieldOperand(value, Map::kInstanceTypeOffset)); |
| 4679 |
| 4680 andb(value, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
| 4681 cmpq(value, Immediate(encoding_mask)); |
| 4682 pop(value); |
| 4683 ThrowIf(not_equal, kUnexpectedStringType); |
| 4684 |
| 4685 // The index is assumed to be untagged coming in, tag it to compare with the |
| 4686 // string length without using a temp register, it is restored at the end of |
| 4687 // this function. |
| 4688 Integer32ToSmi(index, index); |
| 4689 SmiCompare(index, FieldOperand(string, String::kLengthOffset)); |
| 4690 ThrowIf(greater_equal, kIndexIsTooLarge); |
| 4691 |
| 4692 SmiCompare(index, Smi::FromInt(0)); |
| 4693 ThrowIf(less, kIndexIsNegative); |
| 4694 |
| 4695 // Restore the index |
| 4696 SmiToInteger32(index, index); |
| 4697 } |
| 4698 |
| 4699 |
4634 void MacroAssembler::PrepareCallCFunction(int num_arguments) { | 4700 void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
4635 int frame_alignment = OS::ActivationFrameAlignment(); | 4701 int frame_alignment = OS::ActivationFrameAlignment(); |
4636 ASSERT(frame_alignment != 0); | 4702 ASSERT(frame_alignment != 0); |
4637 ASSERT(num_arguments >= 0); | 4703 ASSERT(num_arguments >= 0); |
4638 | 4704 |
4639 // Make stack end at alignment and allocate space for arguments and old rsp. | 4705 // Make stack end at alignment and allocate space for arguments and old rsp. |
4640 movq(kScratchRegister, rsp); | 4706 movq(kScratchRegister, rsp); |
4641 ASSERT(IsPowerOf2(frame_alignment)); | 4707 ASSERT(IsPowerOf2(frame_alignment)); |
4642 int argument_slots_on_stack = | 4708 int argument_slots_on_stack = |
4643 ArgumentStackSlotsForCFunctionCall(num_arguments); | 4709 ArgumentStackSlotsForCFunctionCall(num_arguments); |
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4985 j(equal, found); | 5051 j(equal, found); |
4986 movq(current, FieldOperand(current, Map::kPrototypeOffset)); | 5052 movq(current, FieldOperand(current, Map::kPrototypeOffset)); |
4987 CompareRoot(current, Heap::kNullValueRootIndex); | 5053 CompareRoot(current, Heap::kNullValueRootIndex); |
4988 j(not_equal, &loop_again); | 5054 j(not_equal, &loop_again); |
4989 } | 5055 } |
4990 | 5056 |
4991 | 5057 |
4992 } } // namespace v8::internal | 5058 } } // namespace v8::internal |
4993 | 5059 |
4994 #endif // V8_TARGET_ARCH_X64 | 5060 #endif // V8_TARGET_ARCH_X64 |
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