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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/api-arguments.h" | 7 #include "src/api-arguments.h" |
8 #include "src/arm64/assembler-arm64-inl.h" | 8 #include "src/arm64/assembler-arm64-inl.h" |
9 #include "src/arm64/frames-arm64.h" | 9 #include "src/arm64/frames-arm64.h" |
10 #include "src/arm64/macro-assembler-arm64-inl.h" | 10 #include "src/arm64/macro-assembler-arm64-inl.h" |
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2934 // -- x0 : callee | 2934 // -- x0 : callee |
2935 // -- x4 : call_data | 2935 // -- x4 : call_data |
2936 // -- x2 : holder | 2936 // -- x2 : holder |
2937 // -- x1 : api_function_address | 2937 // -- x1 : api_function_address |
2938 // -- cp : context | 2938 // -- cp : context |
2939 // -- | 2939 // -- |
2940 // -- sp[0] : last argument | 2940 // -- sp[0] : last argument |
2941 // -- ... | 2941 // -- ... |
2942 // -- sp[(argc - 1) * 8] : first argument | 2942 // -- sp[(argc - 1) * 8] : first argument |
2943 // -- sp[argc * 8] : receiver | 2943 // -- sp[argc * 8] : receiver |
| 2944 // -- sp[(argc + 1) * 8] : accessor_holder |
2944 // ----------------------------------- | 2945 // ----------------------------------- |
2945 | 2946 |
2946 Register callee = x0; | 2947 Register callee = x0; |
2947 Register call_data = x4; | 2948 Register call_data = x4; |
2948 Register holder = x2; | 2949 Register holder = x2; |
2949 Register api_function_address = x1; | 2950 Register api_function_address = x1; |
2950 Register context = cp; | 2951 Register context = cp; |
2951 | 2952 |
2952 typedef FunctionCallbackArguments FCA; | 2953 typedef FunctionCallbackArguments FCA; |
2953 | 2954 |
2954 STATIC_ASSERT(FCA::kContextSaveIndex == 6); | 2955 STATIC_ASSERT(FCA::kContextSaveIndex == 6); |
2955 STATIC_ASSERT(FCA::kCalleeIndex == 5); | 2956 STATIC_ASSERT(FCA::kCalleeIndex == 5); |
2956 STATIC_ASSERT(FCA::kDataIndex == 4); | 2957 STATIC_ASSERT(FCA::kDataIndex == 4); |
2957 STATIC_ASSERT(FCA::kReturnValueOffset == 3); | 2958 STATIC_ASSERT(FCA::kReturnValueOffset == 3); |
2958 STATIC_ASSERT(FCA::kReturnValueDefaultValueIndex == 2); | 2959 STATIC_ASSERT(FCA::kReturnValueDefaultValueIndex == 2); |
2959 STATIC_ASSERT(FCA::kIsolateIndex == 1); | 2960 STATIC_ASSERT(FCA::kIsolateIndex == 1); |
2960 STATIC_ASSERT(FCA::kHolderIndex == 0); | 2961 STATIC_ASSERT(FCA::kHolderIndex == 0); |
2961 STATIC_ASSERT(FCA::kNewTargetIndex == 7); | 2962 STATIC_ASSERT(FCA::kNewTargetIndex == 7); |
2962 STATIC_ASSERT(FCA::kArgsLength == 8); | 2963 STATIC_ASSERT(FCA::kArgsLength == 8); |
2963 | 2964 |
2964 // FunctionCallbackArguments | 2965 // FunctionCallbackArguments |
2965 | 2966 |
2966 // new target | 2967 // new target |
2967 __ PushRoot(Heap::kUndefinedValueRootIndex); | 2968 __ PushRoot(Heap::kUndefinedValueRootIndex); |
2968 | 2969 |
2969 // context, callee and call data. | 2970 // context, callee and call data. |
2970 __ Push(context, callee, call_data); | 2971 __ Push(context, callee, call_data); |
2971 | 2972 |
2972 if (!is_lazy()) { | 2973 Register scratch = call_data; |
2973 // Load context from callee | 2974 __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
2974 __ Ldr(context, FieldMemOperand(callee, JSFunction::kContextOffset)); | |
2975 } | |
2976 | |
2977 __ LoadRoot(call_data, Heap::kUndefinedValueRootIndex); | |
2978 Register isolate_reg = x5; | 2975 Register isolate_reg = x5; |
2979 __ Mov(isolate_reg, ExternalReference::isolate_address(masm->isolate())); | 2976 __ Mov(isolate_reg, ExternalReference::isolate_address(masm->isolate())); |
2980 | 2977 |
2981 // FunctionCallbackArguments: | 2978 // FunctionCallbackArguments: |
2982 // return value, return value default, isolate, holder. | 2979 // return value, return value default, isolate, holder. |
2983 __ Push(call_data, call_data, isolate_reg, holder); | 2980 __ Push(scratch, scratch, isolate_reg, holder); |
| 2981 |
| 2982 // Enter a new context |
| 2983 if (is_lazy()) { |
| 2984 // Load context from accessor_holder |
| 2985 Register accessor_holder = context; |
| 2986 __ Ldr(accessor_holder, |
| 2987 MemOperand(__ StackPointer(), |
| 2988 (FCA::kArgsLength + 1 + argc()) * kPointerSize)); |
| 2989 __ Ldr(scratch, FieldMemOperand(accessor_holder, HeapObject::kMapOffset)); |
| 2990 __ GetMapConstructor(scratch, scratch, context, callee); |
| 2991 __ Ldr(context, FieldMemOperand(scratch, JSFunction::kContextOffset)); |
| 2992 } else { |
| 2993 // Load context from callee |
| 2994 __ Ldr(context, FieldMemOperand(callee, JSFunction::kContextOffset)); |
| 2995 } |
2984 | 2996 |
2985 // Prepare arguments. | 2997 // Prepare arguments. |
2986 Register args = x6; | 2998 Register args = x6; |
2987 __ Mov(args, masm->StackPointer()); | 2999 __ Mov(args, masm->StackPointer()); |
2988 | 3000 |
2989 // Allocate the v8::Arguments structure in the arguments' space, since it's | 3001 // Allocate the v8::Arguments structure in the arguments' space, since it's |
2990 // not controlled by GC. | 3002 // not controlled by GC. |
2991 const int kApiStackSpace = 3; | 3003 const int kApiStackSpace = 3; |
2992 | 3004 |
2993 // Allocate space for CallApiFunctionAndReturn can store some scratch | 3005 // Allocate space for CallApiFunctionAndReturn can store some scratch |
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3015 MemOperand context_restore_operand( | 3027 MemOperand context_restore_operand( |
3016 fp, (2 + FCA::kContextSaveIndex) * kPointerSize); | 3028 fp, (2 + FCA::kContextSaveIndex) * kPointerSize); |
3017 // Stores return the first js argument | 3029 // Stores return the first js argument |
3018 int return_value_offset = 0; | 3030 int return_value_offset = 0; |
3019 if (is_store()) { | 3031 if (is_store()) { |
3020 return_value_offset = 2 + FCA::kArgsLength; | 3032 return_value_offset = 2 + FCA::kArgsLength; |
3021 } else { | 3033 } else { |
3022 return_value_offset = 2 + FCA::kReturnValueOffset; | 3034 return_value_offset = 2 + FCA::kReturnValueOffset; |
3023 } | 3035 } |
3024 MemOperand return_value_operand(fp, return_value_offset * kPointerSize); | 3036 MemOperand return_value_operand(fp, return_value_offset * kPointerSize); |
3025 int stack_space = 0; | 3037 const int stack_space = argc() + FCA::kArgsLength + 2; |
3026 MemOperand length_operand = | 3038 MemOperand* stack_space_operand = nullptr; |
3027 MemOperand(masm->StackPointer(), 3 * kPointerSize); | |
3028 MemOperand* stack_space_operand = &length_operand; | |
3029 stack_space = argc() + FCA::kArgsLength + 1; | |
3030 stack_space_operand = NULL; | |
3031 | 3039 |
3032 const int spill_offset = 1 + kApiStackSpace; | 3040 const int spill_offset = 1 + kApiStackSpace; |
3033 CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, stack_space, | 3041 CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, stack_space, |
3034 stack_space_operand, spill_offset, | 3042 stack_space_operand, spill_offset, |
3035 return_value_operand, &context_restore_operand); | 3043 return_value_operand, &context_restore_operand); |
3036 } | 3044 } |
3037 | 3045 |
3038 | 3046 |
3039 void CallApiGetterStub::Generate(MacroAssembler* masm) { | 3047 void CallApiGetterStub::Generate(MacroAssembler* masm) { |
3040 // Build v8::PropertyCallbackInfo::args_ array on the stack and push property | 3048 // Build v8::PropertyCallbackInfo::args_ array on the stack and push property |
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3104 kStackUnwindSpace, NULL, spill_offset, | 3112 kStackUnwindSpace, NULL, spill_offset, |
3105 return_value_operand, NULL); | 3113 return_value_operand, NULL); |
3106 } | 3114 } |
3107 | 3115 |
3108 #undef __ | 3116 #undef __ |
3109 | 3117 |
3110 } // namespace internal | 3118 } // namespace internal |
3111 } // namespace v8 | 3119 } // namespace v8 |
3112 | 3120 |
3113 #endif // V8_TARGET_ARCH_ARM64 | 3121 #endif // V8_TARGET_ARCH_ARM64 |
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