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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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| 2301 andl(scratch2, Immediate(kFlatAsciiStringMask)); | 2301 andl(scratch2, Immediate(kFlatAsciiStringMask)); |
| 2302 // Interleave the bits to check both scratch1 and scratch2 in one test. | 2302 // Interleave the bits to check both scratch1 and scratch2 in one test. |
| 2303 ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3)); | 2303 ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3)); |
| 2304 lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); | 2304 lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
| 2305 cmpl(scratch1, | 2305 cmpl(scratch1, |
| 2306 Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3))); | 2306 Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3))); |
| 2307 j(not_equal, on_fail, near_jump); | 2307 j(not_equal, on_fail, near_jump); |
| 2308 } | 2308 } |
| 2309 | 2309 |
| 2310 | 2310 |
| 2311 template<class T> |
| 2312 static void JumpIfNotUniqueNameHelper(MacroAssembler* masm, |
| 2313 T operand_or_register, |
| 2314 Label* not_unique_name, |
| 2315 Label::Distance distance) { |
| 2316 STATIC_ASSERT(((SYMBOL_TYPE - 1) & kIsInternalizedMask) == kInternalizedTag); |
| 2317 masm->cmpb(operand_or_register, Immediate(kInternalizedTag)); |
| 2318 masm->j(less, not_unique_name, distance); |
| 2319 masm->cmpb(operand_or_register, Immediate(SYMBOL_TYPE)); |
| 2320 masm->j(greater, not_unique_name, distance); |
| 2321 } |
| 2322 |
| 2323 |
| 2324 void MacroAssembler::JumpIfNotUniqueName(Operand operand, |
| 2325 Label* not_unique_name, |
| 2326 Label::Distance distance) { |
| 2327 JumpIfNotUniqueNameHelper<Operand>(this, operand, not_unique_name, distance); |
| 2328 } |
| 2329 |
| 2330 |
| 2331 void MacroAssembler::JumpIfNotUniqueName(Register reg, |
| 2332 Label* not_unique_name, |
| 2333 Label::Distance distance) { |
| 2334 JumpIfNotUniqueNameHelper<Register>(this, reg, not_unique_name, distance); |
| 2335 } |
| 2336 |
| 2311 | 2337 |
| 2312 void MacroAssembler::Move(Register dst, Register src) { | 2338 void MacroAssembler::Move(Register dst, Register src) { |
| 2313 if (!dst.is(src)) { | 2339 if (!dst.is(src)) { |
| 2314 movq(dst, src); | 2340 movq(dst, src); |
| 2315 } | 2341 } |
| 2316 } | 2342 } |
| 2317 | 2343 |
| 2318 | 2344 |
| 2319 void MacroAssembler::Move(Register dst, Handle<Object> source) { | 2345 void MacroAssembler::Move(Register dst, Handle<Object> source) { |
| 2320 AllowDeferredHandleDereference smi_check; | 2346 AllowDeferredHandleDereference smi_check; |
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| 2654 addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); | 2680 addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
| 2655 } | 2681 } |
| 2656 | 2682 |
| 2657 | 2683 |
| 2658 void MacroAssembler::JumpToHandlerEntry() { | 2684 void MacroAssembler::JumpToHandlerEntry() { |
| 2659 // Compute the handler entry address and jump to it. The handler table is | 2685 // Compute the handler entry address and jump to it. The handler table is |
| 2660 // a fixed array of (smi-tagged) code offsets. | 2686 // a fixed array of (smi-tagged) code offsets. |
| 2661 // rax = exception, rdi = code object, rdx = state. | 2687 // rax = exception, rdi = code object, rdx = state. |
| 2662 movq(rbx, FieldOperand(rdi, Code::kHandlerTableOffset)); | 2688 movq(rbx, FieldOperand(rdi, Code::kHandlerTableOffset)); |
| 2663 shr(rdx, Immediate(StackHandler::kKindWidth)); | 2689 shr(rdx, Immediate(StackHandler::kKindWidth)); |
| 2664 movq(rdx, FieldOperand(rbx, rdx, times_8, FixedArray::kHeaderSize)); | 2690 movq(rdx, |
| 2691 FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
| 2665 SmiToInteger64(rdx, rdx); | 2692 SmiToInteger64(rdx, rdx); |
| 2666 lea(rdi, FieldOperand(rdi, rdx, times_1, Code::kHeaderSize)); | 2693 lea(rdi, FieldOperand(rdi, rdx, times_1, Code::kHeaderSize)); |
| 2667 jmp(rdi); | 2694 jmp(rdi); |
| 2668 } | 2695 } |
| 2669 | 2696 |
| 2670 | 2697 |
| 2671 void MacroAssembler::Throw(Register value) { | 2698 void MacroAssembler::Throw(Register value) { |
| 2672 // Adjust this code if not the case. | 2699 // Adjust this code if not the case. |
| 2673 STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize); | 2700 STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize); |
| 2674 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); | 2701 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
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| 4700 j(greater, &no_info_available); | 4727 j(greater, &no_info_available); |
| 4701 CompareRoot(MemOperand(scratch_reg, -AllocationSiteInfo::kSize), | 4728 CompareRoot(MemOperand(scratch_reg, -AllocationSiteInfo::kSize), |
| 4702 Heap::kAllocationSiteInfoMapRootIndex); | 4729 Heap::kAllocationSiteInfoMapRootIndex); |
| 4703 bind(&no_info_available); | 4730 bind(&no_info_available); |
| 4704 } | 4731 } |
| 4705 | 4732 |
| 4706 | 4733 |
| 4707 } } // namespace v8::internal | 4734 } } // namespace v8::internal |
| 4708 | 4735 |
| 4709 #endif // V8_TARGET_ARCH_X64 | 4736 #endif // V8_TARGET_ARCH_X64 |
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