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| 1 // Copyright 2015 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 V8_WASM_OPCODES_H_ |
| 6 #define V8_WASM_OPCODES_H_ |
| 7 |
| 8 #include "src/machine-type.h" |
| 9 #include "src/signature.h" |
| 10 |
| 11 namespace v8 { |
| 12 namespace internal { |
| 13 namespace wasm { |
| 14 |
| 15 // Binary encoding of local types. |
| 16 enum LocalTypeCode { |
| 17 kLocalVoid = 0, |
| 18 kLocalI32 = 1, |
| 19 kLocalI64 = 2, |
| 20 kLocalF32 = 3, |
| 21 kLocalF64 = 4 |
| 22 }; |
| 23 |
| 24 // Binary encoding of memory types. |
| 25 enum MemTypeCode { |
| 26 kMemI8 = 0, |
| 27 kMemU8 = 1, |
| 28 kMemI16 = 2, |
| 29 kMemU16 = 3, |
| 30 kMemI32 = 4, |
| 31 kMemU32 = 5, |
| 32 kMemI64 = 6, |
| 33 kMemU64 = 7, |
| 34 kMemF32 = 8, |
| 35 kMemF64 = 9 |
| 36 }; |
| 37 |
| 38 // We reuse the internal machine type to represent WebAssembly AST types. |
| 39 // A typedef improves readability without adding a whole new type system. |
| 40 typedef MachineRepresentation LocalType; |
| 41 const LocalType kAstStmt = MachineRepresentation::kNone; |
| 42 const LocalType kAstI32 = MachineRepresentation::kWord32; |
| 43 const LocalType kAstI64 = MachineRepresentation::kWord64; |
| 44 const LocalType kAstF32 = MachineRepresentation::kFloat32; |
| 45 const LocalType kAstF64 = MachineRepresentation::kFloat64; |
| 46 // We use kTagged here because kNone is already used by kAstStmt. |
| 47 const LocalType kAstEnd = MachineRepresentation::kTagged; |
| 48 |
| 49 // Functionality related to encoding memory accesses. |
| 50 struct MemoryAccess { |
| 51 // Atomicity annotations for access to the memory and globals. |
| 52 enum Atomicity { |
| 53 kNone = 0, // non-atomic |
| 54 kSequential = 1, // sequential consistency |
| 55 kAcquire = 2, // acquire semantics |
| 56 kRelease = 3 // release semantics |
| 57 }; |
| 58 |
| 59 // Alignment annotations for memory accesses. |
| 60 enum Alignment { kAligned = 0, kUnaligned = 1 }; |
| 61 |
| 62 // Bitfields for the various annotations for memory accesses. |
| 63 typedef BitField<Alignment, 7, 1> AlignmentField; |
| 64 typedef BitField<Atomicity, 5, 2> AtomicityField; |
| 65 typedef BitField<bool, 4, 1> OffsetField; |
| 66 }; |
| 67 |
| 68 typedef Signature<LocalType> FunctionSig; |
| 69 |
| 70 // Control expressions and blocks. |
| 71 #define FOREACH_CONTROL_OPCODE(V) \ |
| 72 V(Nop, 0x00, _) \ |
| 73 V(Block, 0x01, _) \ |
| 74 V(Loop, 0x02, _) \ |
| 75 V(If, 0x03, _) \ |
| 76 V(IfElse, 0x04, _) \ |
| 77 V(Select, 0x05, _) \ |
| 78 V(Br, 0x06, _) \ |
| 79 V(BrIf, 0x07, _) \ |
| 80 V(TableSwitch, 0x08, _) \ |
| 81 V(Return, 0x14, _) \ |
| 82 V(Unreachable, 0x15, _) |
| 83 // TODO(titzer): numbering |
| 84 |
| 85 // Constants, locals, globals, and calls. |
| 86 #define FOREACH_MISC_OPCODE(V) \ |
| 87 V(I8Const, 0x09, _) \ |
| 88 V(I32Const, 0x0a, _) \ |
| 89 V(I64Const, 0x0b, _) \ |
| 90 V(F64Const, 0x0c, _) \ |
| 91 V(F32Const, 0x0d, _) \ |
| 92 V(GetLocal, 0x0e, _) \ |
| 93 V(SetLocal, 0x0f, _) \ |
| 94 V(LoadGlobal, 0x10, _) \ |
| 95 V(StoreGlobal, 0x11, _) \ |
| 96 V(CallFunction, 0x12, _) \ |
| 97 V(CallIndirect, 0x13, _) |
| 98 |
| 99 // Load memory expressions. |
| 100 #define FOREACH_LOAD_MEM_OPCODE(V) \ |
| 101 V(I32LoadMem8S, 0x20, i_i) \ |
| 102 V(I32LoadMem8U, 0x21, i_i) \ |
| 103 V(I32LoadMem16S, 0x22, i_i) \ |
| 104 V(I32LoadMem16U, 0x23, i_i) \ |
| 105 V(I64LoadMem8S, 0x24, l_i) \ |
| 106 V(I64LoadMem8U, 0x25, l_i) \ |
| 107 V(I64LoadMem16S, 0x26, l_i) \ |
| 108 V(I64LoadMem16U, 0x27, l_i) \ |
| 109 V(I64LoadMem32S, 0x28, l_i) \ |
| 110 V(I64LoadMem32U, 0x29, l_i) \ |
| 111 V(I32LoadMem, 0x2a, i_i) \ |
| 112 V(I64LoadMem, 0x2b, l_i) \ |
| 113 V(F32LoadMem, 0x2c, f_i) \ |
| 114 V(F64LoadMem, 0x2d, d_i) |
| 115 |
| 116 // Store memory expressions. |
| 117 #define FOREACH_STORE_MEM_OPCODE(V) \ |
| 118 V(I32StoreMem8, 0x2e, i_ii) \ |
| 119 V(I32StoreMem16, 0x2f, i_ii) \ |
| 120 V(I64StoreMem8, 0x30, l_il) \ |
| 121 V(I64StoreMem16, 0x31, l_il) \ |
| 122 V(I64StoreMem32, 0x32, l_il) \ |
| 123 V(I32StoreMem, 0x33, i_ii) \ |
| 124 V(I64StoreMem, 0x34, l_il) \ |
| 125 V(F32StoreMem, 0x35, f_if) \ |
| 126 V(F64StoreMem, 0x36, d_id) |
| 127 |
| 128 // Load memory expressions. |
| 129 #define FOREACH_MISC_MEM_OPCODE(V) \ |
| 130 V(MemorySize, 0x3b, i_v) \ |
| 131 V(GrowMemory, 0x39, i_i) |
| 132 |
| 133 // Expressions with signatures. |
| 134 #define FOREACH_SIMPLE_OPCODE(V) \ |
| 135 V(I32Add, 0x40, i_ii) \ |
| 136 V(I32Sub, 0x41, i_ii) \ |
| 137 V(I32Mul, 0x42, i_ii) \ |
| 138 V(I32DivS, 0x43, i_ii) \ |
| 139 V(I32DivU, 0x44, i_ii) \ |
| 140 V(I32RemS, 0x45, i_ii) \ |
| 141 V(I32RemU, 0x46, i_ii) \ |
| 142 V(I32And, 0x47, i_ii) \ |
| 143 V(I32Ior, 0x48, i_ii) \ |
| 144 V(I32Xor, 0x49, i_ii) \ |
| 145 V(I32Shl, 0x4a, i_ii) \ |
| 146 V(I32ShrU, 0x4b, i_ii) \ |
| 147 V(I32ShrS, 0x4c, i_ii) \ |
| 148 V(I32Eq, 0x4d, i_ii) \ |
| 149 V(I32Ne, 0x4e, i_ii) \ |
| 150 V(I32LtS, 0x4f, i_ii) \ |
| 151 V(I32LeS, 0x50, i_ii) \ |
| 152 V(I32LtU, 0x51, i_ii) \ |
| 153 V(I32LeU, 0x52, i_ii) \ |
| 154 V(I32GtS, 0x53, i_ii) \ |
| 155 V(I32GeS, 0x54, i_ii) \ |
| 156 V(I32GtU, 0x55, i_ii) \ |
| 157 V(I32GeU, 0x56, i_ii) \ |
| 158 V(I32Clz, 0x57, i_i) \ |
| 159 V(I32Ctz, 0x58, i_i) \ |
| 160 V(I32Popcnt, 0x59, i_i) \ |
| 161 V(BoolNot, 0x5a, i_i) \ |
| 162 V(I64Add, 0x5b, l_ll) \ |
| 163 V(I64Sub, 0x5c, l_ll) \ |
| 164 V(I64Mul, 0x5d, l_ll) \ |
| 165 V(I64DivS, 0x5e, l_ll) \ |
| 166 V(I64DivU, 0x5f, l_ll) \ |
| 167 V(I64RemS, 0x60, l_ll) \ |
| 168 V(I64RemU, 0x61, l_ll) \ |
| 169 V(I64And, 0x62, l_ll) \ |
| 170 V(I64Ior, 0x63, l_ll) \ |
| 171 V(I64Xor, 0x64, l_ll) \ |
| 172 V(I64Shl, 0x65, l_ll) \ |
| 173 V(I64ShrU, 0x66, l_ll) \ |
| 174 V(I64ShrS, 0x67, l_ll) \ |
| 175 V(I64Eq, 0x68, i_ll) \ |
| 176 V(I64Ne, 0x69, i_ll) \ |
| 177 V(I64LtS, 0x6a, i_ll) \ |
| 178 V(I64LeS, 0x6b, i_ll) \ |
| 179 V(I64LtU, 0x6c, i_ll) \ |
| 180 V(I64LeU, 0x6d, i_ll) \ |
| 181 V(I64GtS, 0x6e, i_ll) \ |
| 182 V(I64GeS, 0x6f, i_ll) \ |
| 183 V(I64GtU, 0x70, i_ll) \ |
| 184 V(I64GeU, 0x71, i_ll) \ |
| 185 V(I64Clz, 0x72, l_l) \ |
| 186 V(I64Ctz, 0x73, l_l) \ |
| 187 V(I64Popcnt, 0x74, l_l) \ |
| 188 V(F32Add, 0x75, f_ff) \ |
| 189 V(F32Sub, 0x76, f_ff) \ |
| 190 V(F32Mul, 0x77, f_ff) \ |
| 191 V(F32Div, 0x78, f_ff) \ |
| 192 V(F32Min, 0x79, f_ff) \ |
| 193 V(F32Max, 0x7a, f_ff) \ |
| 194 V(F32Abs, 0x7b, f_f) \ |
| 195 V(F32Neg, 0x7c, f_f) \ |
| 196 V(F32CopySign, 0x7d, f_ff) \ |
| 197 V(F32Ceil, 0x7e, f_f) \ |
| 198 V(F32Floor, 0x7f, f_f) \ |
| 199 V(F32Trunc, 0x80, f_f) \ |
| 200 V(F32NearestInt, 0x81, f_f) \ |
| 201 V(F32Sqrt, 0x82, f_f) \ |
| 202 V(F32Eq, 0x83, i_ff) \ |
| 203 V(F32Ne, 0x84, i_ff) \ |
| 204 V(F32Lt, 0x85, i_ff) \ |
| 205 V(F32Le, 0x86, i_ff) \ |
| 206 V(F32Gt, 0x87, i_ff) \ |
| 207 V(F32Ge, 0x88, i_ff) \ |
| 208 V(F64Add, 0x89, d_dd) \ |
| 209 V(F64Sub, 0x8a, d_dd) \ |
| 210 V(F64Mul, 0x8b, d_dd) \ |
| 211 V(F64Div, 0x8c, d_dd) \ |
| 212 V(F64Min, 0x8d, d_dd) \ |
| 213 V(F64Max, 0x8e, d_dd) \ |
| 214 V(F64Abs, 0x8f, d_d) \ |
| 215 V(F64Neg, 0x90, d_d) \ |
| 216 V(F64CopySign, 0x91, d_dd) \ |
| 217 V(F64Ceil, 0x92, d_d) \ |
| 218 V(F64Floor, 0x93, d_d) \ |
| 219 V(F64Trunc, 0x94, d_d) \ |
| 220 V(F64NearestInt, 0x95, d_d) \ |
| 221 V(F64Sqrt, 0x96, d_d) \ |
| 222 V(F64Eq, 0x97, i_dd) \ |
| 223 V(F64Ne, 0x98, i_dd) \ |
| 224 V(F64Lt, 0x99, i_dd) \ |
| 225 V(F64Le, 0x9a, i_dd) \ |
| 226 V(F64Gt, 0x9b, i_dd) \ |
| 227 V(F64Ge, 0x9c, i_dd) \ |
| 228 V(I32SConvertF32, 0x9d, i_f) \ |
| 229 V(I32SConvertF64, 0x9e, i_d) \ |
| 230 V(I32UConvertF32, 0x9f, i_f) \ |
| 231 V(I32UConvertF64, 0xa0, i_d) \ |
| 232 V(I32ConvertI64, 0xa1, i_l) \ |
| 233 V(I64SConvertF32, 0xa2, l_f) \ |
| 234 V(I64SConvertF64, 0xa3, l_d) \ |
| 235 V(I64UConvertF32, 0xa4, l_f) \ |
| 236 V(I64UConvertF64, 0xa5, l_d) \ |
| 237 V(I64SConvertI32, 0xa6, l_i) \ |
| 238 V(I64UConvertI32, 0xa7, l_i) \ |
| 239 V(F32SConvertI32, 0xa8, f_i) \ |
| 240 V(F32UConvertI32, 0xa9, f_i) \ |
| 241 V(F32SConvertI64, 0xaa, f_l) \ |
| 242 V(F32UConvertI64, 0xab, f_l) \ |
| 243 V(F32ConvertF64, 0xac, f_d) \ |
| 244 V(F32ReinterpretI32, 0xad, f_i) \ |
| 245 V(F64SConvertI32, 0xae, d_i) \ |
| 246 V(F64UConvertI32, 0xaf, d_i) \ |
| 247 V(F64SConvertI64, 0xb0, d_l) \ |
| 248 V(F64UConvertI64, 0xb1, d_l) \ |
| 249 V(F64ConvertF32, 0xb2, d_f) \ |
| 250 V(F64ReinterpretI64, 0xb3, d_l) \ |
| 251 V(I32ReinterpretF32, 0xb4, i_f) \ |
| 252 V(I64ReinterpretF64, 0xb5, l_d) |
| 253 |
| 254 // All opcodes. |
| 255 #define FOREACH_OPCODE(V) \ |
| 256 FOREACH_CONTROL_OPCODE(V) \ |
| 257 FOREACH_MISC_OPCODE(V) \ |
| 258 FOREACH_SIMPLE_OPCODE(V) \ |
| 259 FOREACH_STORE_MEM_OPCODE(V) \ |
| 260 FOREACH_LOAD_MEM_OPCODE(V) \ |
| 261 FOREACH_MISC_MEM_OPCODE(V) |
| 262 |
| 263 // All signatures. |
| 264 #define FOREACH_SIGNATURE(V) \ |
| 265 V(i_ii, kAstI32, kAstI32, kAstI32) \ |
| 266 V(i_i, kAstI32, kAstI32) \ |
| 267 V(i_v, kAstI32) \ |
| 268 V(i_ff, kAstI32, kAstF32, kAstF32) \ |
| 269 V(i_f, kAstI32, kAstF32) \ |
| 270 V(i_dd, kAstI32, kAstF64, kAstF64) \ |
| 271 V(i_d, kAstI32, kAstF64) \ |
| 272 V(i_l, kAstI32, kAstI64) \ |
| 273 V(l_ll, kAstI64, kAstI64, kAstI64) \ |
| 274 V(i_ll, kAstI32, kAstI64, kAstI64) \ |
| 275 V(l_l, kAstI64, kAstI64) \ |
| 276 V(l_i, kAstI64, kAstI32) \ |
| 277 V(l_f, kAstI64, kAstF32) \ |
| 278 V(l_d, kAstI64, kAstF64) \ |
| 279 V(f_ff, kAstF32, kAstF32, kAstF32) \ |
| 280 V(f_f, kAstF32, kAstF32) \ |
| 281 V(f_d, kAstF32, kAstF64) \ |
| 282 V(f_i, kAstF32, kAstI32) \ |
| 283 V(f_l, kAstF32, kAstI64) \ |
| 284 V(d_dd, kAstF64, kAstF64, kAstF64) \ |
| 285 V(d_d, kAstF64, kAstF64) \ |
| 286 V(d_f, kAstF64, kAstF32) \ |
| 287 V(d_i, kAstF64, kAstI32) \ |
| 288 V(d_l, kAstF64, kAstI64) \ |
| 289 V(d_id, kAstF64, kAstI32, kAstF64) \ |
| 290 V(f_if, kAstF32, kAstI32, kAstF32) \ |
| 291 V(l_il, kAstI64, kAstI32, kAstI64) |
| 292 |
| 293 enum WasmOpcode { |
| 294 // Declare expression opcodes. |
| 295 #define DECLARE_NAMED_ENUM(name, opcode, sig) kExpr##name = opcode, |
| 296 FOREACH_OPCODE(DECLARE_NAMED_ENUM) |
| 297 #undef DECLARE_NAMED_ENUM |
| 298 }; |
| 299 |
| 300 // A collection of opcode-related static methods. |
| 301 class WasmOpcodes { |
| 302 public: |
| 303 static bool IsSupported(WasmOpcode opcode); |
| 304 static const char* OpcodeName(WasmOpcode opcode); |
| 305 static FunctionSig* Signature(WasmOpcode opcode); |
| 306 |
| 307 static byte MemSize(MachineType type) { |
| 308 return 1 << ElementSizeLog2Of(type.representation()); |
| 309 } |
| 310 |
| 311 static LocalTypeCode LocalTypeCodeFor(LocalType type) { |
| 312 switch (type) { |
| 313 case kAstI32: |
| 314 return kLocalI32; |
| 315 case kAstI64: |
| 316 return kLocalI64; |
| 317 case kAstF32: |
| 318 return kLocalF32; |
| 319 case kAstF64: |
| 320 return kLocalF64; |
| 321 case kAstStmt: |
| 322 return kLocalVoid; |
| 323 default: |
| 324 UNREACHABLE(); |
| 325 return kLocalVoid; |
| 326 } |
| 327 } |
| 328 |
| 329 static MemTypeCode MemTypeCodeFor(MachineType type) { |
| 330 if (type == MachineType::Int8()) { |
| 331 return kMemI8; |
| 332 } else if (type == MachineType::Uint8()) { |
| 333 return kMemU8; |
| 334 } else if (type == MachineType::Int16()) { |
| 335 return kMemI16; |
| 336 } else if (type == MachineType::Uint16()) { |
| 337 return kMemU16; |
| 338 } else if (type == MachineType::Int32()) { |
| 339 return kMemI32; |
| 340 } else if (type == MachineType::Uint32()) { |
| 341 return kMemU32; |
| 342 } else if (type == MachineType::Int64()) { |
| 343 return kMemI64; |
| 344 } else if (type == MachineType::Uint64()) { |
| 345 return kMemU64; |
| 346 } else if (type == MachineType::Float32()) { |
| 347 return kMemF32; |
| 348 } else if (type == MachineType::Float64()) { |
| 349 return kMemF64; |
| 350 } else { |
| 351 UNREACHABLE(); |
| 352 return kMemI32; |
| 353 } |
| 354 } |
| 355 |
| 356 static MachineType MachineTypeFor(LocalType type) { |
| 357 switch (type) { |
| 358 case kAstI32: |
| 359 return MachineType::Int32(); |
| 360 case kAstI64: |
| 361 return MachineType::Int64(); |
| 362 case kAstF32: |
| 363 return MachineType::Float32(); |
| 364 case kAstF64: |
| 365 return MachineType::Float64(); |
| 366 case kAstStmt: |
| 367 return MachineType::None(); |
| 368 default: |
| 369 UNREACHABLE(); |
| 370 return MachineType::None(); |
| 371 } |
| 372 } |
| 373 |
| 374 static LocalType LocalTypeFor(MachineType type) { |
| 375 if (type == MachineType::Int8()) { |
| 376 return kAstI32; |
| 377 } else if (type == MachineType::Uint8()) { |
| 378 return kAstI32; |
| 379 } else if (type == MachineType::Int16()) { |
| 380 return kAstI32; |
| 381 } else if (type == MachineType::Uint16()) { |
| 382 return kAstI32; |
| 383 } else if (type == MachineType::Int32()) { |
| 384 return kAstI32; |
| 385 } else if (type == MachineType::Uint32()) { |
| 386 return kAstI32; |
| 387 } else if (type == MachineType::Int64()) { |
| 388 return kAstI64; |
| 389 } else if (type == MachineType::Uint64()) { |
| 390 return kAstI64; |
| 391 } else if (type == MachineType::Float32()) { |
| 392 return kAstF32; |
| 393 } else if (type == MachineType::Float64()) { |
| 394 return kAstF64; |
| 395 } else { |
| 396 UNREACHABLE(); |
| 397 return kAstI32; |
| 398 } |
| 399 } |
| 400 |
| 401 // TODO(titzer): remove this method |
| 402 static WasmOpcode LoadStoreOpcodeOf(MachineType type, bool store) { |
| 403 if (type == MachineType::Int8()) { |
| 404 return store ? kExprI32StoreMem8 : kExprI32LoadMem8S; |
| 405 } else if (type == MachineType::Uint8()) { |
| 406 return store ? kExprI32StoreMem8 : kExprI32LoadMem8U; |
| 407 } else if (type == MachineType::Int16()) { |
| 408 return store ? kExprI32StoreMem16 : kExprI32LoadMem16S; |
| 409 } else if (type == MachineType::Uint16()) { |
| 410 return store ? kExprI32StoreMem16 : kExprI32LoadMem16U; |
| 411 } else if (type == MachineType::Int32()) { |
| 412 return store ? kExprI32StoreMem : kExprI32LoadMem; |
| 413 } else if (type == MachineType::Uint32()) { |
| 414 return store ? kExprI32StoreMem : kExprI32LoadMem; |
| 415 } else if (type == MachineType::Int64()) { |
| 416 return store ? kExprI64StoreMem : kExprI64LoadMem; |
| 417 } else if (type == MachineType::Uint64()) { |
| 418 return store ? kExprI64StoreMem : kExprI64LoadMem; |
| 419 } else if (type == MachineType::Float32()) { |
| 420 return store ? kExprF32StoreMem : kExprF32LoadMem; |
| 421 } else if (type == MachineType::Float64()) { |
| 422 return store ? kExprF64StoreMem : kExprF64LoadMem; |
| 423 } else { |
| 424 UNREACHABLE(); |
| 425 return kExprNop; |
| 426 } |
| 427 } |
| 428 |
| 429 static byte LoadStoreAccessOf(bool with_offset) { |
| 430 return MemoryAccess::OffsetField::encode(with_offset); |
| 431 } |
| 432 |
| 433 static char ShortNameOf(LocalType type) { |
| 434 switch (type) { |
| 435 case kAstI32: |
| 436 return 'i'; |
| 437 case kAstI64: |
| 438 return 'l'; |
| 439 case kAstF32: |
| 440 return 'f'; |
| 441 case kAstF64: |
| 442 return 'd'; |
| 443 case kAstStmt: |
| 444 return 'v'; |
| 445 case kAstEnd: |
| 446 return 'x'; |
| 447 default: |
| 448 UNREACHABLE(); |
| 449 return '?'; |
| 450 } |
| 451 } |
| 452 |
| 453 static const char* TypeName(LocalType type) { |
| 454 switch (type) { |
| 455 case kAstI32: |
| 456 return "i32"; |
| 457 case kAstI64: |
| 458 return "i64"; |
| 459 case kAstF32: |
| 460 return "f32"; |
| 461 case kAstF64: |
| 462 return "f64"; |
| 463 case kAstStmt: |
| 464 return "<stmt>"; |
| 465 case kAstEnd: |
| 466 return "<end>"; |
| 467 default: |
| 468 return "<unknown>"; |
| 469 } |
| 470 } |
| 471 }; |
| 472 } // namespace wasm |
| 473 } // namespace internal |
| 474 } // namespace v8 |
| 475 |
| 476 #endif // V8_WASM_OPCODES_H_ |
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Chromium Code Reviews
Issue 1504713014:
Initial import of v8-native WASM. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master