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Side by Side Diff: src/mips/macro-assembler-mips.cc

Issue 1406113007: Merge GlobalObject with JSGlobalObject. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 1 month ago
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2 // Copyright 2012 the V8 project authors. All rights reserved. 2 // Copyright 2012 the V8 project authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be 3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file. 4 // found in the LICENSE file.
5 5
6 #include <limits.h> // For LONG_MIN, LONG_MAX. 6 #include <limits.h> // For LONG_MIN, LONG_MAX.
7 7
8 #if V8_TARGET_ARCH_MIPS 8 #if V8_TARGET_ARCH_MIPS
9 9
10 #include "src/base/bits.h" 10 #include "src/base/bits.h"
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429 // In debug mode, make sure the lexical context is set. 429 // In debug mode, make sure the lexical context is set.
430 #ifdef DEBUG 430 #ifdef DEBUG
431 Check(ne, kWeShouldNotHaveAnEmptyLexicalContext, 431 Check(ne, kWeShouldNotHaveAnEmptyLexicalContext,
432 scratch, Operand(zero_reg)); 432 scratch, Operand(zero_reg));
433 #endif 433 #endif
434 434
435 // Load the native context of the current context. 435 // Load the native context of the current context.
436 int offset = 436 int offset =
437 Context::kHeaderSize + Context::GLOBAL_OBJECT_INDEX * kPointerSize; 437 Context::kHeaderSize + Context::GLOBAL_OBJECT_INDEX * kPointerSize;
438 lw(scratch, FieldMemOperand(scratch, offset)); 438 lw(scratch, FieldMemOperand(scratch, offset));
439 lw(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset)); 439 lw(scratch, FieldMemOperand(scratch, JSGlobalObject::kNativeContextOffset));
440 440
441 // Check the context is a native context. 441 // Check the context is a native context.
442 if (emit_debug_code()) { 442 if (emit_debug_code()) {
443 push(holder_reg); // Temporarily save holder on the stack. 443 push(holder_reg); // Temporarily save holder on the stack.
444 // Read the first word and compare to the native_context_map. 444 // Read the first word and compare to the native_context_map.
445 lw(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset)); 445 lw(holder_reg, FieldMemOperand(scratch, HeapObject::kMapOffset));
446 LoadRoot(at, Heap::kNativeContextMapRootIndex); 446 LoadRoot(at, Heap::kNativeContextMapRootIndex);
447 Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext, 447 Check(eq, kJSGlobalObjectNativeContextShouldBeANativeContext,
448 holder_reg, Operand(at)); 448 holder_reg, Operand(at));
449 pop(holder_reg); // Restore holder. 449 pop(holder_reg); // Restore holder.
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4574 DCHECK(flag == JUMP_FUNCTION); 4574 DCHECK(flag == JUMP_FUNCTION);
4575 Jump(t9); 4575 Jump(t9);
4576 } 4576 }
4577 } 4577 }
4578 4578
4579 4579
4580 void MacroAssembler::GetBuiltinFunction(Register target, 4580 void MacroAssembler::GetBuiltinFunction(Register target,
4581 int native_context_index) { 4581 int native_context_index) {
4582 // Load the builtins object into target register. 4582 // Load the builtins object into target register.
4583 lw(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); 4583 lw(target, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
4584 lw(target, FieldMemOperand(target, GlobalObject::kNativeContextOffset)); 4584 lw(target, FieldMemOperand(target, JSGlobalObject::kNativeContextOffset));
4585 // Load the JavaScript builtin function from the builtins object. 4585 // Load the JavaScript builtin function from the builtins object.
4586 lw(target, ContextOperand(target, native_context_index)); 4586 lw(target, ContextOperand(target, native_context_index));
4587 } 4587 }
4588 4588
4589 4589
4590 void MacroAssembler::GetBuiltinEntry(Register target, 4590 void MacroAssembler::GetBuiltinEntry(Register target,
4591 int native_context_index) { 4591 int native_context_index) {
4592 DCHECK(!target.is(a1)); 4592 DCHECK(!target.is(a1));
4593 GetBuiltinFunction(a1, native_context_index); 4593 GetBuiltinFunction(a1, native_context_index);
4594 // Load the code entry point from the builtins object. 4594 // Load the code entry point from the builtins object.
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4724 // Slot is in the current function context. Move it into the 4724 // Slot is in the current function context. Move it into the
4725 // destination register in case we store into it (the write barrier 4725 // destination register in case we store into it (the write barrier
4726 // cannot be allowed to destroy the context in esi). 4726 // cannot be allowed to destroy the context in esi).
4727 Move(dst, cp); 4727 Move(dst, cp);
4728 } 4728 }
4729 } 4729 }
4730 4730
4731 4731
4732 void MacroAssembler::LoadGlobalProxy(Register dst) { 4732 void MacroAssembler::LoadGlobalProxy(Register dst) {
4733 lw(dst, GlobalObjectOperand()); 4733 lw(dst, GlobalObjectOperand());
4734 lw(dst, FieldMemOperand(dst, GlobalObject::kGlobalProxyOffset)); 4734 lw(dst, FieldMemOperand(dst, JSGlobalObject::kGlobalProxyOffset));
4735 } 4735 }
4736 4736
4737 4737
4738 void MacroAssembler::LoadTransitionedArrayMapConditional( 4738 void MacroAssembler::LoadTransitionedArrayMapConditional(
4739 ElementsKind expected_kind, 4739 ElementsKind expected_kind,
4740 ElementsKind transitioned_kind, 4740 ElementsKind transitioned_kind,
4741 Register map_in_out, 4741 Register map_in_out,
4742 Register scratch, 4742 Register scratch,
4743 Label* no_map_match) { 4743 Label* no_map_match) {
4744 // Load the global or builtins object from the current context. 4744 // Load the global or builtins object from the current context.
4745 lw(scratch, 4745 lw(scratch,
4746 MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); 4746 MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
4747 lw(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset)); 4747 lw(scratch, FieldMemOperand(scratch, JSGlobalObject::kNativeContextOffset));
4748 4748
4749 // Check that the function's map is the same as the expected cached map. 4749 // Check that the function's map is the same as the expected cached map.
4750 lw(scratch, 4750 lw(scratch,
4751 MemOperand(scratch, 4751 MemOperand(scratch,
4752 Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX))); 4752 Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX)));
4753 size_t offset = expected_kind * kPointerSize + 4753 size_t offset = expected_kind * kPointerSize +
4754 FixedArrayBase::kHeaderSize; 4754 FixedArrayBase::kHeaderSize;
4755 lw(at, FieldMemOperand(scratch, offset)); 4755 lw(at, FieldMemOperand(scratch, offset));
4756 Branch(no_map_match, ne, map_in_out, Operand(at)); 4756 Branch(no_map_match, ne, map_in_out, Operand(at));
4757 4757
4758 // Use the transitioned cached map. 4758 // Use the transitioned cached map.
4759 offset = transitioned_kind * kPointerSize + 4759 offset = transitioned_kind * kPointerSize +
4760 FixedArrayBase::kHeaderSize; 4760 FixedArrayBase::kHeaderSize;
4761 lw(map_in_out, FieldMemOperand(scratch, offset)); 4761 lw(map_in_out, FieldMemOperand(scratch, offset));
4762 } 4762 }
4763 4763
4764 4764
4765 void MacroAssembler::LoadGlobalFunction(int index, Register function) { 4765 void MacroAssembler::LoadGlobalFunction(int index, Register function) {
4766 // Load the global or builtins object from the current context. 4766 // Load the global or builtins object from the current context.
4767 lw(function, 4767 lw(function,
4768 MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); 4768 MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
4769 // Load the native context from the global or builtins object. 4769 // Load the native context from the global or builtins object.
4770 lw(function, FieldMemOperand(function, 4770 lw(function, FieldMemOperand(function, JSGlobalObject::kNativeContextOffset));
4771 GlobalObject::kNativeContextOffset));
4772 // Load the function from the native context. 4771 // Load the function from the native context.
4773 lw(function, MemOperand(function, Context::SlotOffset(index))); 4772 lw(function, MemOperand(function, Context::SlotOffset(index)));
4774 } 4773 }
4775 4774
4776 4775
4777 void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, 4776 void MacroAssembler::LoadGlobalFunctionInitialMap(Register function,
4778 Register map, 4777 Register map,
4779 Register scratch) { 4778 Register scratch) {
4780 // Load the initial map. The global functions all have initial maps. 4779 // Load the initial map. The global functions all have initial maps.
4781 lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); 4780 lw(map, FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset));
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5930 if (mag.shift > 0) sra(result, result, mag.shift); 5929 if (mag.shift > 0) sra(result, result, mag.shift);
5931 srl(at, dividend, 31); 5930 srl(at, dividend, 31);
5932 Addu(result, result, Operand(at)); 5931 Addu(result, result, Operand(at));
5933 } 5932 }
5934 5933
5935 5934
5936 } // namespace internal 5935 } // namespace internal
5937 } // namespace v8 5936 } // namespace v8
5938 5937
5939 #endif // V8_TARGET_ARCH_MIPS 5938 #endif // V8_TARGET_ARCH_MIPS
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