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| 1 // Copyright 2016 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 #ifndef SRC_WASM_ASM_TYPES_H_ | |
| 6 #define SRC_WASM_ASM_TYPES_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "src/base/macros.h" | |
| 11 #include "src/zone-containers.h" | |
| 12 #include "src/zone.h" | |
| 13 | |
| 14 namespace v8 { | |
| 15 namespace internal { | |
| 16 namespace wasm { | |
| 17 | |
| 18 class AsmType; | |
| 19 class AsmFFIType; | |
| 20 class AsmFunctionType; | |
| 21 class AsmOverloadedFunctionType; | |
| 22 class AsmFunctionTableType; | |
| 23 | |
| 24 // List of V(CamelName, string_name, number, parent_types) | |
| 25 #define FOR_EACH_ASM_VALUE_TYPE_LIST(V) \ | |
| 26 /* These tags are not types that are expressable in the asm source. They */ \ | |
| 27 /* are used to express semantic information about the types they tag. */ \ | |
| 28 V(Heap, "[]", 1, 0) \ | |
| 29 /*The following are actual types that appear in the asm source. */ \ | |
| 30 V(Void, "void", 2, 0) \ | |
| 31 V(Extern, "extern", 3, 0) \ | |
| 32 V(DoubleQ, "double?", 4, 0) \ | |
| 33 V(Double, "double", 5, kAsmDoubleQ | kAsmExtern) \ | |
| 34 V(Intish, "intish", 6, 0) \ | |
| 35 V(Int, "int", 7, kAsmIntish) \ | |
| 36 V(Signed, "signed", 8, kAsmInt | kAsmExtern) \ | |
| 37 V(Unsigned, "unsigned", 9, kAsmInt) \ | |
| 38 V(FixNum, "fixnum", 10, kAsmSigned | kAsmUnsigned) \ | |
| 39 V(Floatish, "floatish", 11, 0) \ | |
| 40 V(FloatQ, "float?", 12, kAsmFloatish) \ | |
| 41 V(Float, "float", 13, kAsmFloatQ) \ | |
| 42 /* Types used for expressing the Heap accesses. */ \ | |
| 43 V(Uint8Array, "Uint8Array", 14, kAsmHeap) \ | |
| 44 V(Int8Array, "Int8Array", 15, kAsmHeap) \ | |
| 45 V(Uint16Array, "Uint16Array", 16, kAsmHeap) \ | |
| 46 V(Int16Array, "Int16Array", 17, kAsmHeap) \ | |
| 47 V(Uint32Array, "Uint32Array", 18, kAsmHeap) \ | |
| 48 V(Int32Array, "Int32Array", 19, kAsmHeap) \ | |
| 49 V(Float32Array, "Float32Array", 20, kAsmHeap) \ | |
| 50 V(Float64Array, "Float64Array", 21, kAsmHeap) \ | |
| 51 /* Pseudo-types used in representing heap access for fp types.*/ \ | |
| 52 V(FloatishDoubleQ, "floatish|double?", 22, kAsmFloatish | kAsmDoubleQ) \ | |
| 53 V(FloatQDoubleQ, "float?|double?", 23, kAsmFloatQ | kAsmDoubleQ) \ | |
| 54 /* None is used to represent errors in the type checker. */ \ | |
| 55 V(None, "<none>", 31, 0) | |
| 56 | |
| 57 // List of V(CamelName) | |
| 58 #define FOR_EACH_ASM_CALLABLE_TYPE_LIST(V) \ | |
| 59 V(FunctionType) \ | |
| 60 V(FFIType) \ | |
| 61 V(OverloadedFunctionType) \ | |
| 62 V(FunctionTableType) | |
| 63 | |
| 64 class AsmValueType { | |
| 65 public: | |
| 66 typedef uint32_t bitset_t; | |
| 67 | |
| 68 enum : uint32_t { | |
| 69 #define DEFINE_TAG(CamelName, string_name, number, parent_types) \ | |
| 70 kAsm##CamelName = ((1u << (number)) | (parent_types)), | |
| 71 FOR_EACH_ASM_VALUE_TYPE_LIST(DEFINE_TAG) | |
| 72 #undef DEFINE_TAG | |
| 73 kAsmUnknown = 0, | |
| 74 kAsmValueTypeTag = 1u | |
| 75 }; | |
| 76 | |
| 77 private: | |
| 78 friend class AsmType; | |
| 79 | |
| 80 static AsmValueType* AsValueType(AsmType* type) { | |
| 81 if ((reinterpret_cast<uintptr_t>(type) & kAsmValueTypeTag) == | |
| 82 kAsmValueTypeTag) { | |
| 83 return reinterpret_cast<AsmValueType*>(type); | |
| 84 } | |
| 85 return nullptr; | |
| 86 } | |
| 87 | |
| 88 bitset_t Bitset() const { | |
| 89 DCHECK((reinterpret_cast<uintptr_t>(this) & kAsmValueTypeTag) == | |
| 90 kAsmValueTypeTag); | |
| 91 return static_cast<bitset_t>(reinterpret_cast<uintptr_t>(this) & | |
| 92 ~kAsmValueTypeTag); | |
| 93 } | |
| 94 | |
| 95 static AsmType* New(bitset_t bits) { | |
| 96 DCHECK_EQ((bits & kAsmValueTypeTag), 0); | |
| 97 return reinterpret_cast<AsmType*>( | |
| 98 static_cast<uintptr_t>(bits | kAsmValueTypeTag)); | |
| 99 } | |
| 100 | |
| 101 // AsmValueTypes can't be created except through AsmValueType::New. | |
| 102 DISALLOW_IMPLICIT_CONSTRUCTORS(AsmValueType); | |
| 103 }; | |
| 104 | |
| 105 class AsmCallableType : public ZoneObject { | |
| 106 public: | |
| 107 virtual std::string Name() = 0; | |
| 108 virtual AsmType* ValidateCall(AsmType* return_type, | |
| 109 const ZoneVector<AsmType*>& args) = 0; | |
| 110 | |
| 111 #define DECLARE_CAST(CamelName) \ | |
| 112 virtual Asm##CamelName* As##CamelName() { return nullptr; } | |
| 113 FOR_EACH_ASM_CALLABLE_TYPE_LIST(DECLARE_CAST) | |
| 114 #undef DECLARE_CAST | |
| 115 | |
| 116 protected: | |
| 117 AsmCallableType() = default; | |
| 118 virtual ~AsmCallableType() = default; | |
| 119 | |
| 120 private: | |
| 121 DISALLOW_COPY_AND_ASSIGN(AsmCallableType); | |
| 122 }; | |
| 123 | |
| 124 class AsmFunctionType : public AsmCallableType { | |
| 125 public: | |
| 126 AsmFunctionType* AsFunctionType() final { return this; } | |
| 127 | |
| 128 void AddArgument(AsmType* type) { args_.push_back(type); } | |
| 129 const ZoneVector<AsmType*> Arguments() const { return args_; } | |
| 130 AsmType* ReturnType() const { return return_type_; } | |
| 131 | |
| 132 virtual bool IsMinMaxType() const { return false; } | |
| 133 virtual bool IsFroundType() const { return false; } | |
| 134 | |
| 135 protected: | |
| 136 AsmFunctionType(Zone* zone, AsmType* return_type) | |
| 137 : return_type_(return_type), args_(zone) {} | |
| 138 | |
| 139 private: | |
| 140 friend AsmType; | |
| 141 | |
| 142 std::string Name() override; | |
| 143 AsmType* ValidateCall(AsmType* return_type, | |
| 144 const ZoneVector<AsmType*>& args) override; | |
| 145 | |
| 146 AsmType* return_type_; | |
| 147 ZoneVector<AsmType*> args_; | |
| 148 | |
| 149 DISALLOW_COPY_AND_ASSIGN(AsmFunctionType); | |
| 150 }; | |
| 151 | |
| 152 class AsmOverloadedFunctionType final : public AsmCallableType { | |
| 153 public: | |
| 154 AsmOverloadedFunctionType* AsOverloadedFunctionType() override { | |
| 155 return this; | |
| 156 } | |
| 157 | |
| 158 void AddOverload(AsmType* overload); | |
| 159 | |
| 160 private: | |
| 161 friend AsmType; | |
| 162 | |
| 163 explicit AsmOverloadedFunctionType(Zone* zone) : overloads_(zone) {} | |
| 164 | |
| 165 std::string Name() override; | |
| 166 AsmType* ValidateCall(AsmType* return_type, | |
| 167 const ZoneVector<AsmType*>& args) override; | |
| 168 | |
| 169 ZoneVector<AsmType*> overloads_; | |
| 170 | |
| 171 DISALLOW_IMPLICIT_CONSTRUCTORS(AsmOverloadedFunctionType); | |
| 172 }; | |
| 173 | |
| 174 class AsmFFIType final : public AsmCallableType { | |
| 175 public: | |
| 176 AsmFFIType* AsFFIType() override { return this; } | |
| 177 | |
| 178 std::string Name() override { return "Function"; } | |
| 179 AsmType* ValidateCall(AsmType* return_type, | |
| 180 const ZoneVector<AsmType*>& args) override; | |
| 181 | |
| 182 private: | |
| 183 friend AsmType; | |
| 184 | |
| 185 AsmFFIType() = default; | |
| 186 | |
| 187 DISALLOW_COPY_AND_ASSIGN(AsmFFIType); | |
| 188 }; | |
| 189 | |
| 190 class AsmFunctionTableType : public AsmCallableType { | |
| 191 public: | |
| 192 AsmFunctionTableType* AsFunctionTableType() override { return this; } | |
| 193 | |
| 194 std::string Name() override; | |
| 195 | |
| 196 AsmType* ValidateCall(AsmType* return_type, | |
| 197 const ZoneVector<AsmType*>& args) override; | |
| 198 | |
| 199 size_t length() const { return length_; } | |
| 200 | |
| 201 private: | |
| 202 friend class AsmType; | |
| 203 | |
| 204 AsmFunctionTableType(size_t length, AsmType* signature); | |
| 205 | |
| 206 size_t length_; | |
| 207 AsmType* signature_; | |
| 208 | |
| 209 DISALLOW_IMPLICIT_CONSTRUCTORS(AsmFunctionTableType); | |
| 210 }; | |
| 211 | |
| 212 class AsmType { | |
| 213 public: | |
| 214 #define DEFINE_CONSTRUCTOR(CamelName, string_name, number, parent_types) \ | |
| 215 static AsmType* CamelName() { \ | |
| 216 return AsmValueType::New(AsmValueType::kAsm##CamelName); \ | |
| 217 } | |
| 218 FOR_EACH_ASM_VALUE_TYPE_LIST(DEFINE_CONSTRUCTOR) | |
| 219 #undef DEFINE_CONSTRUCTOR | |
| 220 | |
| 221 #define DEFINE_CAST(CamelCase) \ | |
| 222 Asm##CamelCase* As##CamelCase() { \ | |
| 223 if (AsValueType() != nullptr) { \ | |
| 224 return nullptr; \ | |
| 225 } \ | |
| 226 return reinterpret_cast<AsmCallableType*>(this)->As##CamelCase(); \ | |
| 227 } | |
| 228 FOR_EACH_ASM_CALLABLE_TYPE_LIST(DEFINE_CAST) | |
| 229 #undef DEFINE_CAST | |
| 230 AsmValueType* AsValueType() { return AsmValueType::AsValueType(this); } | |
| 231 AsmCallableType* AsCallableType(); | |
| 232 | |
| 233 // A function returning ret. Callers still need to invoke AddArgument with the | |
| 234 // returned type to fully create this type. | |
| 235 static AsmType* Function(Zone* zone, AsmType* ret) { | |
| 236 AsmFunctionType* f = new (zone) AsmFunctionType(zone, ret); | |
| 237 return reinterpret_cast<AsmType*>(f); | |
| 238 } | |
| 239 | |
| 240 // Overloaded function types. Not creatable by asm source, but useful to | |
| 241 // represent the overloaded stdlib functions. | |
| 242 static AsmType* OverloadedFunction(Zone* zone) { | |
| 243 auto* f = new (zone) AsmOverloadedFunctionType(zone); | |
| 244 return reinterpret_cast<AsmType*>(f); | |
| 245 } | |
| 246 | |
| 247 // The type for fround(src). | |
| 248 static AsmType* FroundType(Zone* zone); | |
| 249 | |
| 250 // The (variadic) type for min and max. | |
| 251 static AsmType* MinMaxType(Zone* zone, AsmType* dest, AsmType* src); | |
| 252 | |
| 253 // The type for foreign functions. | |
| 254 static AsmType* FFIType(Zone* zone) { | |
| 255 auto* f = new (zone) AsmFFIType(); | |
| 256 return reinterpret_cast<AsmType*>(f); | |
| 257 } | |
| 258 | |
| 259 // The type for function tables. | |
| 260 static AsmType* FunctionTableType(Zone* zone, size_t length, | |
| 261 AsmType* signature) { | |
| 262 auto* f = new (zone) AsmFunctionTableType(length, signature); | |
| 263 return reinterpret_cast<AsmType*>(f); | |
| 264 } | |
| 265 | |
| 266 std::string Name(); | |
| 267 // IsExactly returns true if this is the exact same type as that. For | |
| 268 // non-value types (e.g., callables), this returns this == that. | |
| 269 bool IsExactly(AsmType* that); | |
| 270 // IsA is used to query whether this is an instance of that (i.e., if this is | |
| 271 // a type derived from that.) For non-value types (e.g., callables), this | |
| 272 // returns this == that. | |
| 273 bool IsA(AsmType* that); | |
| 274 | |
| 275 // Types allowed in return statements. void is the type for returns without | |
| 276 // an expression. | |
| 277 bool IsReturnType() { | |
| 278 return this == AsmType::Void() || this == AsmType::Double() || | |
| 279 this == AsmType::Signed() || this == AsmType::Float(); | |
| 280 } | |
| 281 | |
| 282 // Converts this to the corresponding valid argument type. | |
| 283 AsmType* ToReturnType() { | |
| 284 if (this->IsA(AsmType::Signed())) { | |
| 285 return AsmType::Signed(); | |
| 286 } | |
| 287 if (this->IsA(AsmType::Double())) { | |
| 288 return AsmType::Double(); | |
| 289 } | |
| 290 if (this->IsA(AsmType::Float())) { | |
| 291 return AsmType::Float(); | |
| 292 } | |
| 293 if (this->IsA(AsmType::Void())) { | |
| 294 return AsmType::Void(); | |
| 295 } | |
| 296 return AsmType::None(); | |
| 297 } | |
| 298 | |
| 299 // Types allowed to be parameters in asm functions. | |
| 300 bool IsParameterType() { | |
| 301 return this == AsmType::Double() || this == AsmType::Int() || | |
| 302 this == AsmType::Float(); | |
| 303 } | |
| 304 | |
| 305 // Converts this to the corresponding valid argument type. | |
| 306 AsmType* ToParameterType() { | |
| 307 if (this->IsA(AsmType::Int())) { | |
| 308 return AsmType::Int(); | |
| 309 } | |
| 310 if (this->IsA(AsmType::Double())) { | |
| 311 return AsmType::Double(); | |
| 312 } | |
| 313 if (this->IsA(AsmType::Float())) { | |
| 314 return AsmType::Float(); | |
| 315 } | |
| 316 return AsmType::None(); | |
| 317 } | |
| 318 | |
| 319 // Types allowed to be compared using the comparison operators. | |
| 320 bool IsComparableType() { | |
| 321 return this == AsmType::Double() || this == AsmType::Signed() || | |
| 322 this == AsmType::Unsigned() || this == AsmType::Float(); | |
| 323 } | |
| 324 | |
| 325 // The following methods are meant to be used for inspecting the traits of | |
| 326 // element types for the heap view types. | |
| 327 enum : int32_t { kNotHeapType = -1 }; | |
| 328 | |
| 329 // Returns the element size if this is a heap type. Otherwise returns | |
| 330 // kNotHeapType. | |
| 331 int32_t ElementSizeInBytes(); | |
| 332 // Returns the load type if this is a heap type. AsmType::None is returned if | |
| 333 // this is not a heap type. | |
| 334 AsmType* LoadType(); | |
| 335 // Returns the store type if this is a heap type. AsmType::None is returned if | |
| 336 // this is not a heap type. | |
| 337 AsmType* StoreType(); | |
| 338 }; | |
| 339 | |
| 340 } // namespace wasm | |
| 341 } // namespace internal | |
| 342 } // namespace v8 | |
| 343 | |
| 344 #endif // SRC_WASM_ASM_TYPES_H_ | |
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Chromium Code Reviews
Issue 2057403003:
Hooking up asm-wasm conversion. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master