Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/v8.h" |
| 6 | |
| 7 | #include "src/runtime/runtime.h" |
| 8 | #include "src/runtime/runtime-utils.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | |
| 13 | // Header of runtime functions. |
| 14 | #define F(name, number_of_args, result_size) \ |
| 15 | Object* Runtime_##name(int args_length, Object** args_object, \ |
| 16 | Isolate* isolate); |
| 17 | |
| 18 | #define P(name, number_of_args, result_size) \ |
| 19 | ObjectPair Runtime_##name(int args_length, Object** args_object, \ |
| 20 | Isolate* isolate); |
| 21 | |
| 22 | // Reference implementation for inlined runtime functions. Only used when the |
| 23 | // compiler does not support a certain intrinsic. Don't optimize these, but |
| 24 | // implement the intrinsic in the respective compiler instead. |
| 25 | // TODO(mstarzinger): These are place-holder stubs for TurboFan and will |
| 26 | // eventually all have a C++ implementation and this macro will be gone. |
| 27 | #define I(name, number_of_args, result_size) \ |
| 28 | Object* RuntimeReference_##name(int args_length, Object** args_object, \ |
| 29 | Isolate* isolate); |
| 30 | |
| 31 | RUNTIME_FUNCTION_LIST_RETURN_OBJECT(F) |
| 32 | RUNTIME_FUNCTION_LIST_RETURN_PAIR(P) |
| 33 | INLINE_OPTIMIZED_FUNCTION_LIST(F) |
| 34 | INLINE_FUNCTION_LIST(I) |
| 35 | |
| 36 | #undef I |
| 37 | #undef F |
| 38 | #undef P |
| 39 | |
| 40 | |
| 41 | #define F(name, number_of_args, result_size) \ |
| 42 | { \ |
| 43 | Runtime::k##name, Runtime::RUNTIME, #name, FUNCTION_ADDR(Runtime_##name), \ |
| 44 | number_of_args, result_size \ |
| 45 | } \ |
| 46 | , |
| 47 | |
| 48 | |
| 49 | #define I(name, number_of_args, result_size) \ |
| 50 | { \ |
| 51 | Runtime::kInline##name, Runtime::INLINE, "_" #name, \ |
| 52 | FUNCTION_ADDR(RuntimeReference_##name), number_of_args, result_size \ |
| 53 | } \ |
| 54 | , |
| 55 | |
| 56 | |
| 57 | #define IO(name, number_of_args, result_size) \ |
| 58 | { \ |
| 59 | Runtime::kInlineOptimized##name, Runtime::INLINE_OPTIMIZED, "_" #name, \ |
| 60 | FUNCTION_ADDR(Runtime_##name), number_of_args, result_size \ |
| 61 | } \ |
| 62 | , |
| 63 | |
| 64 | |
| 65 | static const Runtime::Function kIntrinsicFunctions[] = { |
| 66 | RUNTIME_FUNCTION_LIST(F) INLINE_OPTIMIZED_FUNCTION_LIST(F) |
| 67 | INLINE_FUNCTION_LIST(I) INLINE_OPTIMIZED_FUNCTION_LIST(IO)}; |
| 68 | |
| 69 | #undef IO |
| 70 | #undef I |
| 71 | #undef F |
| 72 | |
| 73 | |
| 74 | void Runtime::InitializeIntrinsicFunctionNames(Isolate* isolate, |
| 75 | Handle<NameDictionary> dict) { |
| 76 | DCHECK(dict->NumberOfElements() == 0); |
| 77 | HandleScope scope(isolate); |
| 78 | for (int i = 0; i < kNumFunctions; ++i) { |
| 79 | const char* name = kIntrinsicFunctions[i].name; |
| 80 | if (name == NULL) continue; |
| 81 | Handle<NameDictionary> new_dict = NameDictionary::Add( |
| 82 | dict, isolate->factory()->InternalizeUtf8String(name), |
| 83 | Handle<Smi>(Smi::FromInt(i), isolate), PropertyDetails(NONE, FIELD, 0)); |
| 84 | // The dictionary does not need to grow. |
| 85 | CHECK(new_dict.is_identical_to(dict)); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | |
| 90 | const Runtime::Function* Runtime::FunctionForName(Handle<String> name) { |
| 91 | Heap* heap = name->GetHeap(); |
| 92 | int entry = heap->intrinsic_function_names()->FindEntry(name); |
| 93 | if (entry != kNotFound) { |
| 94 | Object* smi_index = heap->intrinsic_function_names()->ValueAt(entry); |
| 95 | int function_index = Smi::cast(smi_index)->value(); |
| 96 | return &(kIntrinsicFunctions[function_index]); |
| 97 | } |
| 98 | return NULL; |
| 99 | } |
| 100 | |
| 101 | |
| 102 | const Runtime::Function* Runtime::FunctionForEntry(Address entry) { |
| 103 | for (size_t i = 0; i < arraysize(kIntrinsicFunctions); ++i) { |
| 104 | if (entry == kIntrinsicFunctions[i].entry) { |
| 105 | return &(kIntrinsicFunctions[i]); |
| 106 | } |
| 107 | } |
| 108 | return NULL; |
| 109 | } |
| 110 | |
| 111 | |
| 112 | const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) { |
| 113 | return &(kIntrinsicFunctions[static_cast<int>(id)]); |
| 114 | } |
| 115 | |
| 116 | |
| 117 | std::ostream& operator<<(std::ostream& os, Runtime::FunctionId id) { |
| 118 | return os << Runtime::FunctionForId(id)->name; |
| 119 | } |
| 120 | |
| 121 | } // namespace internal |
| 122 | } // namespace v8 |