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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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| 778 Split(eq, if_true, if_false, NULL); | 778 Split(eq, if_true, if_false, NULL); |
| 779 __ bind(&skip); | 779 __ bind(&skip); |
| 780 } | 780 } |
| 781 } | 781 } |
| 782 | 782 |
| 783 | 783 |
| 784 void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) { | 784 void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) { |
| 785 // The variable in the declaration always resides in the current function | 785 // The variable in the declaration always resides in the current function |
| 786 // context. | 786 // context. |
| 787 ASSERT_EQ(0, scope()->ContextChainLength(variable->scope())); | 787 ASSERT_EQ(0, scope()->ContextChainLength(variable->scope())); |
| 788 if (FLAG_debug_code) { | 788 if (generate_debug_code_) { |
| 789 // Check that we're not inside a with or catch context. | 789 // Check that we're not inside a with or catch context. |
| 790 __ ldr(r1, FieldMemOperand(cp, HeapObject::kMapOffset)); | 790 __ ldr(r1, FieldMemOperand(cp, HeapObject::kMapOffset)); |
| 791 __ CompareRoot(r1, Heap::kWithContextMapRootIndex); | 791 __ CompareRoot(r1, Heap::kWithContextMapRootIndex); |
| 792 __ Check(ne, "Declaration in with context."); | 792 __ Check(ne, "Declaration in with context."); |
| 793 __ CompareRoot(r1, Heap::kCatchContextMapRootIndex); | 793 __ CompareRoot(r1, Heap::kCatchContextMapRootIndex); |
| 794 __ Check(ne, "Declaration in catch context."); | 794 __ Check(ne, "Declaration in catch context."); |
| 795 } | 795 } |
| 796 } | 796 } |
| 797 | 797 |
| 798 | 798 |
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| 2140 __ RecordWriteContextSlot( | 2140 __ RecordWriteContextSlot( |
| 2141 r1, offset, r3, r2, kLRHasBeenSaved, kDontSaveFPRegs); | 2141 r1, offset, r3, r2, kLRHasBeenSaved, kDontSaveFPRegs); |
| 2142 } | 2142 } |
| 2143 } | 2143 } |
| 2144 | 2144 |
| 2145 } else if (!var->is_const_mode() || op == Token::INIT_CONST_HARMONY) { | 2145 } else if (!var->is_const_mode() || op == Token::INIT_CONST_HARMONY) { |
| 2146 // Assignment to var or initializing assignment to let/const | 2146 // Assignment to var or initializing assignment to let/const |
| 2147 // in harmony mode. | 2147 // in harmony mode. |
| 2148 if (var->IsStackAllocated() || var->IsContextSlot()) { | 2148 if (var->IsStackAllocated() || var->IsContextSlot()) { |
| 2149 MemOperand location = VarOperand(var, r1); | 2149 MemOperand location = VarOperand(var, r1); |
| 2150 if (FLAG_debug_code && op == Token::INIT_LET) { | 2150 if (generate_debug_code_ && op == Token::INIT_LET) { |
| 2151 // Check for an uninitialized let binding. | 2151 // Check for an uninitialized let binding. |
| 2152 __ ldr(r2, location); | 2152 __ ldr(r2, location); |
| 2153 __ CompareRoot(r2, Heap::kTheHoleValueRootIndex); | 2153 __ CompareRoot(r2, Heap::kTheHoleValueRootIndex); |
| 2154 __ Check(eq, "Let binding re-initialization."); | 2154 __ Check(eq, "Let binding re-initialization."); |
| 2155 } | 2155 } |
| 2156 // Perform the assignment. | 2156 // Perform the assignment. |
| 2157 __ str(r0, location); | 2157 __ str(r0, location); |
| 2158 if (var->IsContextSlot()) { | 2158 if (var->IsContextSlot()) { |
| 2159 __ mov(r3, r0); | 2159 __ mov(r3, r0); |
| 2160 int offset = Context::SlotOffset(var->index()); | 2160 int offset = Context::SlotOffset(var->index()); |
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| 2704 | 2704 |
| 2705 VisitForAccumulatorValue(args->at(0)); | 2705 VisitForAccumulatorValue(args->at(0)); |
| 2706 | 2706 |
| 2707 Label materialize_true, materialize_false; | 2707 Label materialize_true, materialize_false; |
| 2708 Label* if_true = NULL; | 2708 Label* if_true = NULL; |
| 2709 Label* if_false = NULL; | 2709 Label* if_false = NULL; |
| 2710 Label* fall_through = NULL; | 2710 Label* fall_through = NULL; |
| 2711 context()->PrepareTest(&materialize_true, &materialize_false, | 2711 context()->PrepareTest(&materialize_true, &materialize_false, |
| 2712 &if_true, &if_false, &fall_through); | 2712 &if_true, &if_false, &fall_through); |
| 2713 | 2713 |
| 2714 if (FLAG_debug_code) __ AbortIfSmi(r0); | 2714 if (generate_debug_code_) __ AbortIfSmi(r0); |
| 2715 | 2715 |
| 2716 __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); | 2716 __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 2717 __ ldrb(ip, FieldMemOperand(r1, Map::kBitField2Offset)); | 2717 __ ldrb(ip, FieldMemOperand(r1, Map::kBitField2Offset)); |
| 2718 __ tst(ip, Operand(1 << Map::kStringWrapperSafeForDefaultValueOf)); | 2718 __ tst(ip, Operand(1 << Map::kStringWrapperSafeForDefaultValueOf)); |
| 2719 __ b(ne, if_true); | 2719 __ b(ne, if_true); |
| 2720 | 2720 |
| 2721 // Check for fast case object. Generate false result for slow case object. | 2721 // Check for fast case object. Generate false result for slow case object. |
| 2722 __ ldr(r2, FieldMemOperand(r0, JSObject::kPropertiesOffset)); | 2722 __ ldr(r2, FieldMemOperand(r0, JSObject::kPropertiesOffset)); |
| 2723 __ ldr(r2, FieldMemOperand(r2, HeapObject::kMapOffset)); | 2723 __ ldr(r2, FieldMemOperand(r2, HeapObject::kMapOffset)); |
| 2724 __ LoadRoot(ip, Heap::kHashTableMapRootIndex); | 2724 __ LoadRoot(ip, Heap::kHashTableMapRootIndex); |
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| 3568 | 3568 |
| 3569 context()->Plug(if_true, if_false); | 3569 context()->Plug(if_true, if_false); |
| 3570 } | 3570 } |
| 3571 | 3571 |
| 3572 | 3572 |
| 3573 void FullCodeGenerator::EmitGetCachedArrayIndex(CallRuntime* expr) { | 3573 void FullCodeGenerator::EmitGetCachedArrayIndex(CallRuntime* expr) { |
| 3574 ZoneList<Expression*>* args = expr->arguments(); | 3574 ZoneList<Expression*>* args = expr->arguments(); |
| 3575 ASSERT(args->length() == 1); | 3575 ASSERT(args->length() == 1); |
| 3576 VisitForAccumulatorValue(args->at(0)); | 3576 VisitForAccumulatorValue(args->at(0)); |
| 3577 | 3577 |
| 3578 if (FLAG_debug_code) { | 3578 if (generate_debug_code_) { |
| 3579 __ AbortIfNotString(r0); | 3579 __ AbortIfNotString(r0); |
| 3580 } | 3580 } |
| 3581 | 3581 |
| 3582 __ ldr(r0, FieldMemOperand(r0, String::kHashFieldOffset)); | 3582 __ ldr(r0, FieldMemOperand(r0, String::kHashFieldOffset)); |
| 3583 __ IndexFromHash(r0, r0); | 3583 __ IndexFromHash(r0, r0); |
| 3584 | 3584 |
| 3585 context()->Plug(r0); | 3585 context()->Plug(r0); |
| 3586 } | 3586 } |
| 3587 | 3587 |
| 3588 | 3588 |
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| 3642 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | 3642 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 3643 __ add(elements_end, element, Operand(array_length, LSL, kPointerSizeLog2)); | 3643 __ add(elements_end, element, Operand(array_length, LSL, kPointerSizeLog2)); |
| 3644 // Loop condition: while (element < elements_end). | 3644 // Loop condition: while (element < elements_end). |
| 3645 // Live values in registers: | 3645 // Live values in registers: |
| 3646 // elements: Fixed array of strings. | 3646 // elements: Fixed array of strings. |
| 3647 // array_length: Length of the fixed array of strings (not smi) | 3647 // array_length: Length of the fixed array of strings (not smi) |
| 3648 // separator: Separator string | 3648 // separator: Separator string |
| 3649 // string_length: Accumulated sum of string lengths (smi). | 3649 // string_length: Accumulated sum of string lengths (smi). |
| 3650 // element: Current array element. | 3650 // element: Current array element. |
| 3651 // elements_end: Array end. | 3651 // elements_end: Array end. |
| 3652 if (FLAG_debug_code) { | 3652 if (generate_debug_code_) { |
| 3653 __ cmp(array_length, Operand(0)); | 3653 __ cmp(array_length, Operand(0)); |
| 3654 __ Assert(gt, "No empty arrays here in EmitFastAsciiArrayJoin"); | 3654 __ Assert(gt, "No empty arrays here in EmitFastAsciiArrayJoin"); |
| 3655 } | 3655 } |
| 3656 __ bind(&loop); | 3656 __ bind(&loop); |
| 3657 __ ldr(string, MemOperand(element, kPointerSize, PostIndex)); | 3657 __ ldr(string, MemOperand(element, kPointerSize, PostIndex)); |
| 3658 __ JumpIfSmi(string, &bailout); | 3658 __ JumpIfSmi(string, &bailout); |
| 3659 __ ldr(scratch1, FieldMemOperand(string, HeapObject::kMapOffset)); | 3659 __ ldr(scratch1, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 3660 __ ldrb(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); | 3660 __ ldrb(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 3661 __ JumpIfInstanceTypeIsNotSequentialAscii(scratch1, scratch2, &bailout); | 3661 __ JumpIfInstanceTypeIsNotSequentialAscii(scratch1, scratch2, &bailout); |
| 3662 __ ldr(scratch1, FieldMemOperand(string, SeqAsciiString::kLengthOffset)); | 3662 __ ldr(scratch1, FieldMemOperand(string, SeqAsciiString::kLengthOffset)); |
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| 4570 *context_length = 0; | 4570 *context_length = 0; |
| 4571 return previous_; | 4571 return previous_; |
| 4572 } | 4572 } |
| 4573 | 4573 |
| 4574 | 4574 |
| 4575 #undef __ | 4575 #undef __ |
| 4576 | 4576 |
| 4577 } } // namespace v8::internal | 4577 } } // namespace v8::internal |
| 4578 | 4578 |
| 4579 #endif // V8_TARGET_ARCH_ARM | 4579 #endif // V8_TARGET_ARCH_ARM |
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