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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
6 | 6 |
7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
8 #include "src/debug/debug.h" | 8 #include "src/debug/debug.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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942 // o a1: the JS function object being called. | 942 // o a1: the JS function object being called. |
943 // o a3: the new target | 943 // o a3: the new target |
944 // o cp: our context | 944 // o cp: our context |
945 // o fp: the caller's frame pointer | 945 // o fp: the caller's frame pointer |
946 // o sp: stack pointer | 946 // o sp: stack pointer |
947 // o ra: return address | 947 // o ra: return address |
948 // | 948 // |
949 // The function builds an interpreter frame. See InterpreterFrameConstants in | 949 // The function builds an interpreter frame. See InterpreterFrameConstants in |
950 // frames.h for its layout. | 950 // frames.h for its layout. |
951 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { | 951 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { |
| 952 ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 953 |
952 // Open a frame scope to indicate that there is a frame on the stack. The | 954 // Open a frame scope to indicate that there is a frame on the stack. The |
953 // MANUAL indicates that the scope shouldn't actually generate code to set up | 955 // MANUAL indicates that the scope shouldn't actually generate code to set up |
954 // the frame (that is done below). | 956 // the frame (that is done below). |
955 FrameScope frame_scope(masm, StackFrame::MANUAL); | 957 FrameScope frame_scope(masm, StackFrame::MANUAL); |
956 __ PushStandardFrame(a1); | 958 __ PushStandardFrame(a1); |
957 | 959 |
958 // Get the bytecode array from the function object and load the pointer to the | 960 // Get the bytecode array from the function object and load the pointer to the |
959 // first entry into kInterpreterBytecodeRegister. | 961 // first entry into kInterpreterBytecodeRegister. |
960 __ lw(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); | 962 __ lw(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
961 Label load_debug_bytecode_array, bytecode_array_loaded; | 963 Label load_debug_bytecode_array, bytecode_array_loaded; |
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1002 __ Branch(&loop_check); | 1004 __ Branch(&loop_check); |
1003 __ bind(&loop_header); | 1005 __ bind(&loop_header); |
1004 // TODO(rmcilroy): Consider doing more than one push per loop iteration. | 1006 // TODO(rmcilroy): Consider doing more than one push per loop iteration. |
1005 __ push(t1); | 1007 __ push(t1); |
1006 // Continue loop if not done. | 1008 // Continue loop if not done. |
1007 __ bind(&loop_check); | 1009 __ bind(&loop_check); |
1008 __ Subu(t0, t0, Operand(kPointerSize)); | 1010 __ Subu(t0, t0, Operand(kPointerSize)); |
1009 __ Branch(&loop_header, ge, t0, Operand(zero_reg)); | 1011 __ Branch(&loop_header, ge, t0, Operand(zero_reg)); |
1010 } | 1012 } |
1011 | 1013 |
1012 // TODO(rmcilroy): List of things not currently dealt with here but done in | |
1013 // fullcodegen's prologue: | |
1014 // - Call ProfileEntryHookStub when isolate has a function_entry_hook. | |
1015 // - Code aging of the BytecodeArray object. | |
1016 | |
1017 // Load bytecode offset and dispatch table into registers. | 1014 // Load bytecode offset and dispatch table into registers. |
1018 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); | 1015 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
1019 __ Addu(kInterpreterRegisterFileRegister, fp, | 1016 __ Addu(kInterpreterRegisterFileRegister, fp, |
1020 Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); | 1017 Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
1021 __ li(kInterpreterBytecodeOffsetRegister, | 1018 __ li(kInterpreterBytecodeOffsetRegister, |
1022 Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); | 1019 Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
1023 __ li(kInterpreterDispatchTableRegister, | 1020 __ li(kInterpreterDispatchTableRegister, |
1024 Operand(ExternalReference::interpreter_dispatch_table_address( | 1021 Operand(ExternalReference::interpreter_dispatch_table_address( |
1025 masm->isolate()))); | 1022 masm->isolate()))); |
1026 | 1023 |
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2856 } | 2853 } |
2857 } | 2854 } |
2858 | 2855 |
2859 | 2856 |
2860 #undef __ | 2857 #undef __ |
2861 | 2858 |
2862 } // namespace internal | 2859 } // namespace internal |
2863 } // namespace v8 | 2860 } // namespace v8 |
2864 | 2861 |
2865 #endif // V8_TARGET_ARCH_MIPS | 2862 #endif // V8_TARGET_ARCH_MIPS |
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