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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
| 6 | 6 |
| 7 #include "src/arm64/frames-arm64.h" | 7 #include "src/arm64/frames-arm64.h" |
| 8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
| 9 #include "src/debug/debug.h" | 9 #include "src/debug/debug.h" |
| 10 #include "src/deoptimizer.h" | 10 #include "src/deoptimizer.h" |
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| 959 // - x1: the JS function object being called. | 959 // - x1: the JS function object being called. |
| 960 // - x3: the new target | 960 // - x3: the new target |
| 961 // - cp: our context. | 961 // - cp: our context. |
| 962 // - fp: our caller's frame pointer. | 962 // - fp: our caller's frame pointer. |
| 963 // - jssp: stack pointer. | 963 // - jssp: stack pointer. |
| 964 // - lr: return address. | 964 // - lr: return address. |
| 965 // | 965 // |
| 966 // The function builds an interpreter frame. See InterpreterFrameConstants in | 966 // The function builds an interpreter frame. See InterpreterFrameConstants in |
| 967 // frames.h for its layout. | 967 // frames.h for its layout. |
| 968 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { | 968 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { |
| 969 ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 970 |
| 969 // Open a frame scope to indicate that there is a frame on the stack. The | 971 // Open a frame scope to indicate that there is a frame on the stack. The |
| 970 // MANUAL indicates that the scope shouldn't actually generate code to set up | 972 // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 971 // the frame (that is done below). | 973 // the frame (that is done below). |
| 972 FrameScope frame_scope(masm, StackFrame::MANUAL); | 974 FrameScope frame_scope(masm, StackFrame::MANUAL); |
| 973 __ Push(lr, fp, cp, x1); | 975 __ Push(lr, fp, cp, x1); |
| 974 __ Add(fp, jssp, StandardFrameConstants::kFixedFrameSizeFromFp); | 976 __ Add(fp, jssp, StandardFrameConstants::kFixedFrameSizeFromFp); |
| 975 | 977 |
| 976 // Get the bytecode array from the function object and load the pointer to the | 978 // Get the bytecode array from the function object and load the pointer to the |
| 977 // first entry into kInterpreterBytecodeRegister. | 979 // first entry into kInterpreterBytecodeRegister. |
| 978 __ Ldr(x0, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset)); | 980 __ Ldr(x0, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset)); |
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| 1019 // register in the register file. | 1021 // register in the register file. |
| 1020 Label loop_header; | 1022 Label loop_header; |
| 1021 __ LoadRoot(x10, Heap::kUndefinedValueRootIndex); | 1023 __ LoadRoot(x10, Heap::kUndefinedValueRootIndex); |
| 1022 // TODO(rmcilroy): Ensure we always have an even number of registers to | 1024 // TODO(rmcilroy): Ensure we always have an even number of registers to |
| 1023 // allow stack to be 16 bit aligned (and remove need for jssp). | 1025 // allow stack to be 16 bit aligned (and remove need for jssp). |
| 1024 __ Lsr(x11, x11, kPointerSizeLog2); | 1026 __ Lsr(x11, x11, kPointerSizeLog2); |
| 1025 __ PushMultipleTimes(x10, x11); | 1027 __ PushMultipleTimes(x10, x11); |
| 1026 __ Bind(&loop_header); | 1028 __ Bind(&loop_header); |
| 1027 } | 1029 } |
| 1028 | 1030 |
| 1029 // TODO(rmcilroy): List of things not currently dealt with here but done in | |
| 1030 // fullcodegen's prologue: | |
| 1031 // - Call ProfileEntryHookStub when isolate has a function_entry_hook. | |
| 1032 // - Code aging of the BytecodeArray object. | |
| 1033 | |
| 1034 // Load accumulator, register file, bytecode offset, dispatch table into | 1031 // Load accumulator, register file, bytecode offset, dispatch table into |
| 1035 // registers. | 1032 // registers. |
| 1036 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); | 1033 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
| 1037 __ Add(kInterpreterRegisterFileRegister, fp, | 1034 __ Add(kInterpreterRegisterFileRegister, fp, |
| 1038 Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); | 1035 Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
| 1039 __ Mov(kInterpreterBytecodeOffsetRegister, | 1036 __ Mov(kInterpreterBytecodeOffsetRegister, |
| 1040 Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); | 1037 Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
| 1041 __ Mov(kInterpreterDispatchTableRegister, | 1038 __ Mov(kInterpreterDispatchTableRegister, |
| 1042 Operand(ExternalReference::interpreter_dispatch_table_address( | 1039 Operand(ExternalReference::interpreter_dispatch_table_address( |
| 1043 masm->isolate()))); | 1040 masm->isolate()))); |
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| 2890 } | 2887 } |
| 2891 } | 2888 } |
| 2892 | 2889 |
| 2893 | 2890 |
| 2894 #undef __ | 2891 #undef __ |
| 2895 | 2892 |
| 2896 } // namespace internal | 2893 } // namespace internal |
| 2897 } // namespace v8 | 2894 } // namespace v8 |
| 2898 | 2895 |
| 2899 #endif // V8_TARGET_ARCH_ARM | 2896 #endif // V8_TARGET_ARCH_ARM |
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