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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "vm/globals.h" // NOLINT | 5 #include "vm/globals.h" // NOLINT |
| 6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
| 7 | 7 |
| 8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
| 9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
| 10 #include "vm/cpu.h" | 10 #include "vm/cpu.h" |
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| 2764 Label* failure, | 2764 Label* failure, |
| 2765 bool near_jump, | 2765 bool near_jump, |
| 2766 Register instance_reg, | 2766 Register instance_reg, |
| 2767 Register temp_reg) { | 2767 Register temp_reg) { |
| 2768 ASSERT(failure != NULL); | 2768 ASSERT(failure != NULL); |
| 2769 ASSERT(temp_reg != kNoRegister); | 2769 ASSERT(temp_reg != kNoRegister); |
| 2770 if (FLAG_inline_alloc) { | 2770 if (FLAG_inline_alloc) { |
| 2771 // If this allocation is traced, program will jump to failure path | 2771 // If this allocation is traced, program will jump to failure path |
| 2772 // (i.e. the allocation stub) which will allocate the object and trace the | 2772 // (i.e. the allocation stub) which will allocate the object and trace the |
| 2773 // allocation call site. | 2773 // allocation call site. |
| 2774 MaybeTraceAllocation(cls.id(), temp_reg, failure, near_jump); | 2774 NOT_IN_PRODUCT( |
| 2775 MaybeTraceAllocation(cls.id(), temp_reg, failure, near_jump)); |
| 2775 const intptr_t instance_size = cls.instance_size(); | 2776 const intptr_t instance_size = cls.instance_size(); |
| 2776 Heap::Space space = Heap::SpaceForAllocation(cls.id()); | 2777 Heap::Space space = Heap::SpaceForAllocation(cls.id()); |
| 2777 movl(temp_reg, Address(THR, Thread::heap_offset())); | 2778 movl(temp_reg, Address(THR, Thread::heap_offset())); |
| 2778 movl(instance_reg, Address(temp_reg, Heap::TopOffset(space))); | 2779 movl(instance_reg, Address(temp_reg, Heap::TopOffset(space))); |
| 2779 addl(instance_reg, Immediate(instance_size)); | 2780 addl(instance_reg, Immediate(instance_size)); |
| 2780 // instance_reg: potential next object start. | 2781 // instance_reg: potential next object start. |
| 2781 cmpl(instance_reg, Address(temp_reg, Heap::EndOffset(space))); | 2782 cmpl(instance_reg, Address(temp_reg, Heap::EndOffset(space))); |
| 2782 j(ABOVE_EQUAL, failure, near_jump); | 2783 j(ABOVE_EQUAL, failure, near_jump); |
| 2783 // Successfully allocated the object, now update top to point to | 2784 // Successfully allocated the object, now update top to point to |
| 2784 // next object start and store the class in the class field of object. | 2785 // next object start and store the class in the class field of object. |
| 2785 movl(Address(temp_reg, Heap::TopOffset(space)), instance_reg); | 2786 movl(Address(temp_reg, Heap::TopOffset(space)), instance_reg); |
| 2786 UpdateAllocationStats(cls.id(), temp_reg, space); | 2787 NOT_IN_PRODUCT(UpdateAllocationStats(cls.id(), temp_reg, space)); |
| 2787 ASSERT(instance_size >= kHeapObjectTag); | 2788 ASSERT(instance_size >= kHeapObjectTag); |
| 2788 subl(instance_reg, Immediate(instance_size - kHeapObjectTag)); | 2789 subl(instance_reg, Immediate(instance_size - kHeapObjectTag)); |
| 2789 uword tags = 0; | 2790 uword tags = 0; |
| 2790 tags = RawObject::SizeTag::update(instance_size, tags); | 2791 tags = RawObject::SizeTag::update(instance_size, tags); |
| 2791 ASSERT(cls.id() != kIllegalCid); | 2792 ASSERT(cls.id() != kIllegalCid); |
| 2792 tags = RawObject::ClassIdTag::update(cls.id(), tags); | 2793 tags = RawObject::ClassIdTag::update(cls.id(), tags); |
| 2793 movl(FieldAddress(instance_reg, Object::tags_offset()), Immediate(tags)); | 2794 movl(FieldAddress(instance_reg, Object::tags_offset()), Immediate(tags)); |
| 2794 } else { | 2795 } else { |
| 2795 jmp(failure); | 2796 jmp(failure); |
| 2796 } | 2797 } |
| 2797 } | 2798 } |
| 2798 | 2799 |
| 2799 | 2800 |
| 2800 void Assembler::TryAllocateArray(intptr_t cid, | 2801 void Assembler::TryAllocateArray(intptr_t cid, |
| 2801 intptr_t instance_size, | 2802 intptr_t instance_size, |
| 2802 Label* failure, | 2803 Label* failure, |
| 2803 bool near_jump, | 2804 bool near_jump, |
| 2804 Register instance, | 2805 Register instance, |
| 2805 Register end_address, | 2806 Register end_address, |
| 2806 Register temp_reg) { | 2807 Register temp_reg) { |
| 2807 ASSERT(failure != NULL); | 2808 ASSERT(failure != NULL); |
| 2808 ASSERT(temp_reg != kNoRegister); | 2809 ASSERT(temp_reg != kNoRegister); |
| 2809 if (FLAG_inline_alloc) { | 2810 if (FLAG_inline_alloc) { |
| 2810 // If this allocation is traced, program will jump to failure path | 2811 // If this allocation is traced, program will jump to failure path |
| 2811 // (i.e. the allocation stub) which will allocate the object and trace the | 2812 // (i.e. the allocation stub) which will allocate the object and trace the |
| 2812 // allocation call site. | 2813 // allocation call site. |
| 2813 MaybeTraceAllocation(cid, temp_reg, failure, near_jump); | 2814 NOT_IN_PRODUCT(MaybeTraceAllocation(cid, temp_reg, failure, near_jump)); |
| 2814 Heap::Space space = Heap::SpaceForAllocation(cid); | 2815 Heap::Space space = Heap::SpaceForAllocation(cid); |
| 2815 movl(temp_reg, Address(THR, Thread::heap_offset())); | 2816 movl(temp_reg, Address(THR, Thread::heap_offset())); |
| 2816 movl(instance, Address(temp_reg, Heap::TopOffset(space))); | 2817 movl(instance, Address(temp_reg, Heap::TopOffset(space))); |
| 2817 movl(end_address, instance); | 2818 movl(end_address, instance); |
| 2818 | 2819 |
| 2819 addl(end_address, Immediate(instance_size)); | 2820 addl(end_address, Immediate(instance_size)); |
| 2820 j(CARRY, failure); | 2821 j(CARRY, failure); |
| 2821 | 2822 |
| 2822 // Check if the allocation fits into the remaining space. | 2823 // Check if the allocation fits into the remaining space. |
| 2823 // EAX: potential new object start. | 2824 // EAX: potential new object start. |
| 2824 // EBX: potential next object start. | 2825 // EBX: potential next object start. |
| 2825 cmpl(end_address, Address(temp_reg, Heap::EndOffset(space))); | 2826 cmpl(end_address, Address(temp_reg, Heap::EndOffset(space))); |
| 2826 j(ABOVE_EQUAL, failure); | 2827 j(ABOVE_EQUAL, failure); |
| 2827 | 2828 |
| 2828 // Successfully allocated the object(s), now update top to point to | 2829 // Successfully allocated the object(s), now update top to point to |
| 2829 // next object start and initialize the object. | 2830 // next object start and initialize the object. |
| 2830 movl(Address(temp_reg, Heap::TopOffset(space)), end_address); | 2831 movl(Address(temp_reg, Heap::TopOffset(space)), end_address); |
| 2831 addl(instance, Immediate(kHeapObjectTag)); | 2832 addl(instance, Immediate(kHeapObjectTag)); |
| 2832 UpdateAllocationStatsWithSize(cid, instance_size, temp_reg, space); | 2833 NOT_IN_PRODUCT( |
| 2834 UpdateAllocationStatsWithSize(cid, instance_size, temp_reg, space)); |
| 2833 | 2835 |
| 2834 // Initialize the tags. | 2836 // Initialize the tags. |
| 2835 uword tags = 0; | 2837 uword tags = 0; |
| 2836 tags = RawObject::ClassIdTag::update(cid, tags); | 2838 tags = RawObject::ClassIdTag::update(cid, tags); |
| 2837 tags = RawObject::SizeTag::update(instance_size, tags); | 2839 tags = RawObject::SizeTag::update(instance_size, tags); |
| 2838 movl(FieldAddress(instance, Object::tags_offset()), Immediate(tags)); | 2840 movl(FieldAddress(instance, Object::tags_offset()), Immediate(tags)); |
| 2839 } else { | 2841 } else { |
| 2840 jmp(failure); | 2842 jmp(failure); |
| 2841 } | 2843 } |
| 2842 } | 2844 } |
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| 3178 | 3180 |
| 3179 const char* Assembler::FpuRegisterName(FpuRegister reg) { | 3181 const char* Assembler::FpuRegisterName(FpuRegister reg) { |
| 3180 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); | 3182 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); |
| 3181 return xmm_reg_names[reg]; | 3183 return xmm_reg_names[reg]; |
| 3182 } | 3184 } |
| 3183 | 3185 |
| 3184 | 3186 |
| 3185 } // namespace dart | 3187 } // namespace dart |
| 3186 | 3188 |
| 3187 #endif // defined TARGET_ARCH_IA32 | 3189 #endif // defined TARGET_ARCH_IA32 |
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