| // Copyright 2015 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_WASM_OPCODES_H_ |
| #define V8_WASM_OPCODES_H_ |
| |
| #include "src/machine-type.h" |
| #include "src/signature.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace wasm { |
| |
| // Binary encoding of local types. |
| enum LocalTypeCode { |
| kLocalVoid = 0, |
| kLocalI32 = 1, |
| kLocalI64 = 2, |
| kLocalF32 = 3, |
| kLocalF64 = 4 |
| }; |
| |
| // Binary encoding of memory types. |
| enum MemTypeCode { |
| kMemI8 = 0, |
| kMemU8 = 1, |
| kMemI16 = 2, |
| kMemU16 = 3, |
| kMemI32 = 4, |
| kMemU32 = 5, |
| kMemI64 = 6, |
| kMemU64 = 7, |
| kMemF32 = 8, |
| kMemF64 = 9 |
| }; |
| |
| // We reuse the internal machine type to represent WebAssembly AST types. |
| // A typedef improves readability without adding a whole new type system. |
| typedef MachineRepresentation LocalType; |
| const LocalType kAstStmt = MachineRepresentation::kNone; |
| const LocalType kAstI32 = MachineRepresentation::kWord32; |
| const LocalType kAstI64 = MachineRepresentation::kWord64; |
| const LocalType kAstF32 = MachineRepresentation::kFloat32; |
| const LocalType kAstF64 = MachineRepresentation::kFloat64; |
| // We use kTagged here because kNone is already used by kAstStmt. |
| const LocalType kAstEnd = MachineRepresentation::kTagged; |
| |
| typedef Signature<LocalType> FunctionSig; |
| std::ostream& operator<<(std::ostream& os, const FunctionSig& function); |
| |
| struct WasmName { |
| const char* name; |
| uint32_t length; |
| }; |
| |
| // TODO(titzer): Renumber all the opcodes to fill in holes. |
| |
| // Control expressions and blocks. |
| #define FOREACH_CONTROL_OPCODE(V) \ |
| V(Nop, 0x00, _) \ |
| V(Block, 0x01, _) \ |
| V(Loop, 0x02, _) \ |
| V(If, 0x03, _) \ |
| V(IfElse, 0x04, _) \ |
| V(Select, 0x05, _) \ |
| V(Br, 0x06, _) \ |
| V(BrIf, 0x07, _) \ |
| V(BrTable, 0x08, _) \ |
| V(Return, 0x14, _) \ |
| V(Unreachable, 0x15, _) |
| |
| // Constants, locals, globals, and calls. |
| #define FOREACH_MISC_OPCODE(V) \ |
| V(I8Const, 0x09, _) \ |
| V(I32Const, 0x0a, _) \ |
| V(I64Const, 0x0b, _) \ |
| V(F64Const, 0x0c, _) \ |
| V(F32Const, 0x0d, _) \ |
| V(GetLocal, 0x0e, _) \ |
| V(SetLocal, 0x0f, _) \ |
| V(LoadGlobal, 0x10, _) \ |
| V(StoreGlobal, 0x11, _) \ |
| V(CallFunction, 0x12, _) \ |
| V(CallIndirect, 0x13, _) \ |
| V(CallImport, 0x1F, _) \ |
| V(DeclLocals, 0x1E, _) |
| |
| // Load memory expressions. |
| #define FOREACH_LOAD_MEM_OPCODE(V) \ |
| V(I32LoadMem8S, 0x20, i_i) \ |
| V(I32LoadMem8U, 0x21, i_i) \ |
| V(I32LoadMem16S, 0x22, i_i) \ |
| V(I32LoadMem16U, 0x23, i_i) \ |
| V(I64LoadMem8S, 0x24, l_i) \ |
| V(I64LoadMem8U, 0x25, l_i) \ |
| V(I64LoadMem16S, 0x26, l_i) \ |
| V(I64LoadMem16U, 0x27, l_i) \ |
| V(I64LoadMem32S, 0x28, l_i) \ |
| V(I64LoadMem32U, 0x29, l_i) \ |
| V(I32LoadMem, 0x2a, i_i) \ |
| V(I64LoadMem, 0x2b, l_i) \ |
| V(F32LoadMem, 0x2c, f_i) \ |
| V(F64LoadMem, 0x2d, d_i) |
| |
| // Store memory expressions. |
| #define FOREACH_STORE_MEM_OPCODE(V) \ |
| V(I32StoreMem8, 0x2e, i_ii) \ |
| V(I32StoreMem16, 0x2f, i_ii) \ |
| V(I64StoreMem8, 0x30, l_il) \ |
| V(I64StoreMem16, 0x31, l_il) \ |
| V(I64StoreMem32, 0x32, l_il) \ |
| V(I32StoreMem, 0x33, i_ii) \ |
| V(I64StoreMem, 0x34, l_il) \ |
| V(F32StoreMem, 0x35, f_if) \ |
| V(F64StoreMem, 0x36, d_id) |
| |
| // Load memory expressions. |
| #define FOREACH_MISC_MEM_OPCODE(V) \ |
| V(MemorySize, 0x3b, i_v) \ |
| V(GrowMemory, 0x39, i_i) |
| |
| // Expressions with signatures. |
| #define FOREACH_SIMPLE_OPCODE(V) \ |
| V(I32Add, 0x40, i_ii) \ |
| V(I32Sub, 0x41, i_ii) \ |
| V(I32Mul, 0x42, i_ii) \ |
| V(I32DivS, 0x43, i_ii) \ |
| V(I32DivU, 0x44, i_ii) \ |
| V(I32RemS, 0x45, i_ii) \ |
| V(I32RemU, 0x46, i_ii) \ |
| V(I32And, 0x47, i_ii) \ |
| V(I32Ior, 0x48, i_ii) \ |
| V(I32Xor, 0x49, i_ii) \ |
| V(I32Shl, 0x4a, i_ii) \ |
| V(I32ShrU, 0x4b, i_ii) \ |
| V(I32ShrS, 0x4c, i_ii) \ |
| V(I32Eq, 0x4d, i_ii) \ |
| V(I32Ne, 0x4e, i_ii) \ |
| V(I32LtS, 0x4f, i_ii) \ |
| V(I32LeS, 0x50, i_ii) \ |
| V(I32LtU, 0x51, i_ii) \ |
| V(I32LeU, 0x52, i_ii) \ |
| V(I32GtS, 0x53, i_ii) \ |
| V(I32GeS, 0x54, i_ii) \ |
| V(I32GtU, 0x55, i_ii) \ |
| V(I32GeU, 0x56, i_ii) \ |
| V(I32Clz, 0x57, i_i) \ |
| V(I32Ctz, 0x58, i_i) \ |
| V(I32Popcnt, 0x59, i_i) \ |
| V(I32Eqz, 0x5a, i_i) \ |
| V(I64Add, 0x5b, l_ll) \ |
| V(I64Sub, 0x5c, l_ll) \ |
| V(I64Mul, 0x5d, l_ll) \ |
| V(I64DivS, 0x5e, l_ll) \ |
| V(I64DivU, 0x5f, l_ll) \ |
| V(I64RemS, 0x60, l_ll) \ |
| V(I64RemU, 0x61, l_ll) \ |
| V(I64And, 0x62, l_ll) \ |
| V(I64Ior, 0x63, l_ll) \ |
| V(I64Xor, 0x64, l_ll) \ |
| V(I64Shl, 0x65, l_ll) \ |
| V(I64ShrU, 0x66, l_ll) \ |
| V(I64ShrS, 0x67, l_ll) \ |
| V(I64Eq, 0x68, i_ll) \ |
| V(I64Ne, 0x69, i_ll) \ |
| V(I64LtS, 0x6a, i_ll) \ |
| V(I64LeS, 0x6b, i_ll) \ |
| V(I64LtU, 0x6c, i_ll) \ |
| V(I64LeU, 0x6d, i_ll) \ |
| V(I64GtS, 0x6e, i_ll) \ |
| V(I64GeS, 0x6f, i_ll) \ |
| V(I64GtU, 0x70, i_ll) \ |
| V(I64GeU, 0x71, i_ll) \ |
| V(I64Clz, 0x72, l_l) \ |
| V(I64Ctz, 0x73, l_l) \ |
| V(I64Popcnt, 0x74, l_l) \ |
| V(I64Eqz, 0xba, i_l) \ |
| V(F32Add, 0x75, f_ff) \ |
| V(F32Sub, 0x76, f_ff) \ |
| V(F32Mul, 0x77, f_ff) \ |
| V(F32Div, 0x78, f_ff) \ |
| V(F32Min, 0x79, f_ff) \ |
| V(F32Max, 0x7a, f_ff) \ |
| V(F32Abs, 0x7b, f_f) \ |
| V(F32Neg, 0x7c, f_f) \ |
| V(F32CopySign, 0x7d, f_ff) \ |
| V(F32Ceil, 0x7e, f_f) \ |
| V(F32Floor, 0x7f, f_f) \ |
| V(F32Trunc, 0x80, f_f) \ |
| V(F32NearestInt, 0x81, f_f) \ |
| V(F32Sqrt, 0x82, f_f) \ |
| V(F32Eq, 0x83, i_ff) \ |
| V(F32Ne, 0x84, i_ff) \ |
| V(F32Lt, 0x85, i_ff) \ |
| V(F32Le, 0x86, i_ff) \ |
| V(F32Gt, 0x87, i_ff) \ |
| V(F32Ge, 0x88, i_ff) \ |
| V(F64Add, 0x89, d_dd) \ |
| V(F64Sub, 0x8a, d_dd) \ |
| V(F64Mul, 0x8b, d_dd) \ |
| V(F64Div, 0x8c, d_dd) \ |
| V(F64Min, 0x8d, d_dd) \ |
| V(F64Max, 0x8e, d_dd) \ |
| V(F64Abs, 0x8f, d_d) \ |
| V(F64Neg, 0x90, d_d) \ |
| V(F64CopySign, 0x91, d_dd) \ |
| V(F64Ceil, 0x92, d_d) \ |
| V(F64Floor, 0x93, d_d) \ |
| V(F64Trunc, 0x94, d_d) \ |
| V(F64NearestInt, 0x95, d_d) \ |
| V(F64Sqrt, 0x96, d_d) \ |
| V(F64Eq, 0x97, i_dd) \ |
| V(F64Ne, 0x98, i_dd) \ |
| V(F64Lt, 0x99, i_dd) \ |
| V(F64Le, 0x9a, i_dd) \ |
| V(F64Gt, 0x9b, i_dd) \ |
| V(F64Ge, 0x9c, i_dd) \ |
| V(I32SConvertF32, 0x9d, i_f) \ |
| V(I32SConvertF64, 0x9e, i_d) \ |
| V(I32UConvertF32, 0x9f, i_f) \ |
| V(I32UConvertF64, 0xa0, i_d) \ |
| V(I32ConvertI64, 0xa1, i_l) \ |
| V(I64SConvertF32, 0xa2, l_f) \ |
| V(I64SConvertF64, 0xa3, l_d) \ |
| V(I64UConvertF32, 0xa4, l_f) \ |
| V(I64UConvertF64, 0xa5, l_d) \ |
| V(I64SConvertI32, 0xa6, l_i) \ |
| V(I64UConvertI32, 0xa7, l_i) \ |
| V(F32SConvertI32, 0xa8, f_i) \ |
| V(F32UConvertI32, 0xa9, f_i) \ |
| V(F32SConvertI64, 0xaa, f_l) \ |
| V(F32UConvertI64, 0xab, f_l) \ |
| V(F32ConvertF64, 0xac, f_d) \ |
| V(F32ReinterpretI32, 0xad, f_i) \ |
| V(F64SConvertI32, 0xae, d_i) \ |
| V(F64UConvertI32, 0xaf, d_i) \ |
| V(F64SConvertI64, 0xb0, d_l) \ |
| V(F64UConvertI64, 0xb1, d_l) \ |
| V(F64ConvertF32, 0xb2, d_f) \ |
| V(F64ReinterpretI64, 0xb3, d_l) \ |
| V(I32ReinterpretF32, 0xb4, i_f) \ |
| V(I64ReinterpretF64, 0xb5, l_d) \ |
| V(I32Ror, 0xb6, i_ii) \ |
| V(I32Rol, 0xb7, i_ii) \ |
| V(I64Ror, 0xb8, l_ll) \ |
| V(I64Rol, 0xb9, l_ll) |
| |
| // For compatibility with Asm.js. |
| #define FOREACH_ASMJS_COMPAT_OPCODE(V) \ |
| V(F64Acos, 0xc0, d_d) \ |
| V(F64Asin, 0xc1, d_d) \ |
| V(F64Atan, 0xc2, d_d) \ |
| V(F64Cos, 0xc3, d_d) \ |
| V(F64Sin, 0xc4, d_d) \ |
| V(F64Tan, 0xc5, d_d) \ |
| V(F64Exp, 0xc6, d_d) \ |
| V(F64Log, 0xc7, d_d) \ |
| V(F64Atan2, 0xc8, d_dd) \ |
| V(F64Pow, 0xc9, d_dd) \ |
| V(F64Mod, 0xca, d_dd) |
| |
| // TODO(titzer): sketch of asm-js compatibility bytecodes |
| /* V(I32AsmjsDivS, 0xd0, i_ii) \ */ |
| /* V(I32AsmjsDivU, 0xd1, i_ii) \ */ |
| /* V(I32AsmjsRemS, 0xd2, i_ii) \ */ |
| /* V(I32AsmjsRemU, 0xd3, i_ii) \ */ |
| /* V(I32AsmjsLoad8S, 0xd4, i_i) \ */ |
| /* V(I32AsmjsLoad8U, 0xd5, i_i) \ */ |
| /* V(I32AsmjsLoad16S, 0xd6, i_i) \ */ |
| /* V(I32AsmjsLoad16U, 0xd7, i_i) \ */ |
| /* V(I32AsmjsLoad, 0xd8, i_i) \ */ |
| /* V(F32AsmjsLoad, 0xd9, f_i) \ */ |
| /* V(F64AsmjsLoad, 0xda, d_i) \ */ |
| /* V(I32AsmjsStore8, 0xdb, i_i) \ */ |
| /* V(I32AsmjsStore16, 0xdc, i_i) \ */ |
| /* V(I32AsmjsStore, 0xdd, i_ii) \ */ |
| /* V(F32AsmjsStore, 0xde, i_if) \ */ |
| /* V(F64AsmjsStore, 0xdf, i_id) \ */ |
| /* V(I32SAsmjsConvertF32, 0xe0, i_f) \ */ |
| /* V(I32UAsmjsConvertF32, 0xe1, i_f) \ */ |
| /* V(I32SAsmjsConvertF64, 0xe2, i_d) \ */ |
| /* V(I32SAsmjsConvertF64, 0xe3, i_d) */ |
| |
| // All opcodes. |
| #define FOREACH_OPCODE(V) \ |
| FOREACH_CONTROL_OPCODE(V) \ |
| FOREACH_MISC_OPCODE(V) \ |
| FOREACH_SIMPLE_OPCODE(V) \ |
| FOREACH_STORE_MEM_OPCODE(V) \ |
| FOREACH_LOAD_MEM_OPCODE(V) \ |
| FOREACH_MISC_MEM_OPCODE(V) \ |
| FOREACH_ASMJS_COMPAT_OPCODE(V) |
| |
| // All signatures. |
| #define FOREACH_SIGNATURE(V) \ |
| V(i_ii, kAstI32, kAstI32, kAstI32) \ |
| V(i_i, kAstI32, kAstI32) \ |
| V(i_v, kAstI32) \ |
| V(i_ff, kAstI32, kAstF32, kAstF32) \ |
| V(i_f, kAstI32, kAstF32) \ |
| V(i_dd, kAstI32, kAstF64, kAstF64) \ |
| V(i_d, kAstI32, kAstF64) \ |
| V(i_l, kAstI32, kAstI64) \ |
| V(l_ll, kAstI64, kAstI64, kAstI64) \ |
| V(i_ll, kAstI32, kAstI64, kAstI64) \ |
| V(l_l, kAstI64, kAstI64) \ |
| V(l_i, kAstI64, kAstI32) \ |
| V(l_f, kAstI64, kAstF32) \ |
| V(l_d, kAstI64, kAstF64) \ |
| V(f_ff, kAstF32, kAstF32, kAstF32) \ |
| V(f_f, kAstF32, kAstF32) \ |
| V(f_d, kAstF32, kAstF64) \ |
| V(f_i, kAstF32, kAstI32) \ |
| V(f_l, kAstF32, kAstI64) \ |
| V(d_dd, kAstF64, kAstF64, kAstF64) \ |
| V(d_d, kAstF64, kAstF64) \ |
| V(d_f, kAstF64, kAstF32) \ |
| V(d_i, kAstF64, kAstI32) \ |
| V(d_l, kAstF64, kAstI64) \ |
| V(d_id, kAstF64, kAstI32, kAstF64) \ |
| V(f_if, kAstF32, kAstI32, kAstF32) \ |
| V(l_il, kAstI64, kAstI32, kAstI64) |
| |
| enum WasmOpcode { |
| // Declare expression opcodes. |
| #define DECLARE_NAMED_ENUM(name, opcode, sig) kExpr##name = opcode, |
| FOREACH_OPCODE(DECLARE_NAMED_ENUM) |
| #undef DECLARE_NAMED_ENUM |
| }; |
| |
| // The reason for a trap. |
| enum TrapReason { |
| kTrapUnreachable, |
| kTrapMemOutOfBounds, |
| kTrapDivByZero, |
| kTrapDivUnrepresentable, |
| kTrapRemByZero, |
| kTrapFloatUnrepresentable, |
| kTrapFuncInvalid, |
| kTrapFuncSigMismatch, |
| kTrapCount |
| }; |
| |
| // A collection of opcode-related static methods. |
| class WasmOpcodes { |
| public: |
| static bool IsSupported(WasmOpcode opcode); |
| static const char* OpcodeName(WasmOpcode opcode); |
| static FunctionSig* Signature(WasmOpcode opcode); |
| |
| static byte MemSize(MachineType type) { |
| return 1 << ElementSizeLog2Of(type.representation()); |
| } |
| |
| static LocalTypeCode LocalTypeCodeFor(LocalType type) { |
| switch (type) { |
| case kAstI32: |
| return kLocalI32; |
| case kAstI64: |
| return kLocalI64; |
| case kAstF32: |
| return kLocalF32; |
| case kAstF64: |
| return kLocalF64; |
| case kAstStmt: |
| return kLocalVoid; |
| default: |
| UNREACHABLE(); |
| return kLocalVoid; |
| } |
| } |
| |
| static MemTypeCode MemTypeCodeFor(MachineType type) { |
| if (type == MachineType::Int8()) { |
| return kMemI8; |
| } else if (type == MachineType::Uint8()) { |
| return kMemU8; |
| } else if (type == MachineType::Int16()) { |
| return kMemI16; |
| } else if (type == MachineType::Uint16()) { |
| return kMemU16; |
| } else if (type == MachineType::Int32()) { |
| return kMemI32; |
| } else if (type == MachineType::Uint32()) { |
| return kMemU32; |
| } else if (type == MachineType::Int64()) { |
| return kMemI64; |
| } else if (type == MachineType::Uint64()) { |
| return kMemU64; |
| } else if (type == MachineType::Float32()) { |
| return kMemF32; |
| } else if (type == MachineType::Float64()) { |
| return kMemF64; |
| } else { |
| UNREACHABLE(); |
| return kMemI32; |
| } |
| } |
| |
| static MachineType MachineTypeFor(LocalType type) { |
| switch (type) { |
| case kAstI32: |
| return MachineType::Int32(); |
| case kAstI64: |
| return MachineType::Int64(); |
| case kAstF32: |
| return MachineType::Float32(); |
| case kAstF64: |
| return MachineType::Float64(); |
| case kAstStmt: |
| return MachineType::None(); |
| default: |
| UNREACHABLE(); |
| return MachineType::None(); |
| } |
| } |
| |
| static LocalType LocalTypeFor(MachineType type) { |
| if (type == MachineType::Int8()) { |
| return kAstI32; |
| } else if (type == MachineType::Uint8()) { |
| return kAstI32; |
| } else if (type == MachineType::Int16()) { |
| return kAstI32; |
| } else if (type == MachineType::Uint16()) { |
| return kAstI32; |
| } else if (type == MachineType::Int32()) { |
| return kAstI32; |
| } else if (type == MachineType::Uint32()) { |
| return kAstI32; |
| } else if (type == MachineType::Int64()) { |
| return kAstI64; |
| } else if (type == MachineType::Uint64()) { |
| return kAstI64; |
| } else if (type == MachineType::Float32()) { |
| return kAstF32; |
| } else if (type == MachineType::Float64()) { |
| return kAstF64; |
| } else { |
| UNREACHABLE(); |
| return kAstI32; |
| } |
| } |
| |
| static WasmOpcode LoadStoreOpcodeOf(MachineType type, bool store) { |
| if (type == MachineType::Int8()) { |
| return store ? kExprI32StoreMem8 : kExprI32LoadMem8S; |
| } else if (type == MachineType::Uint8()) { |
| return store ? kExprI32StoreMem8 : kExprI32LoadMem8U; |
| } else if (type == MachineType::Int16()) { |
| return store ? kExprI32StoreMem16 : kExprI32LoadMem16S; |
| } else if (type == MachineType::Uint16()) { |
| return store ? kExprI32StoreMem16 : kExprI32LoadMem16U; |
| } else if (type == MachineType::Int32()) { |
| return store ? kExprI32StoreMem : kExprI32LoadMem; |
| } else if (type == MachineType::Uint32()) { |
| return store ? kExprI32StoreMem : kExprI32LoadMem; |
| } else if (type == MachineType::Int64()) { |
| return store ? kExprI64StoreMem : kExprI64LoadMem; |
| } else if (type == MachineType::Uint64()) { |
| return store ? kExprI64StoreMem : kExprI64LoadMem; |
| } else if (type == MachineType::Float32()) { |
| return store ? kExprF32StoreMem : kExprF32LoadMem; |
| } else if (type == MachineType::Float64()) { |
| return store ? kExprF64StoreMem : kExprF64LoadMem; |
| } else { |
| UNREACHABLE(); |
| return kExprNop; |
| } |
| } |
| |
| static char ShortNameOf(LocalType type) { |
| switch (type) { |
| case kAstI32: |
| return 'i'; |
| case kAstI64: |
| return 'l'; |
| case kAstF32: |
| return 'f'; |
| case kAstF64: |
| return 'd'; |
| case kAstStmt: |
| return 'v'; |
| case kAstEnd: |
| return 'x'; |
| default: |
| UNREACHABLE(); |
| return '?'; |
| } |
| } |
| |
| static const char* TypeName(LocalType type) { |
| switch (type) { |
| case kAstI32: |
| return "i32"; |
| case kAstI64: |
| return "i64"; |
| case kAstF32: |
| return "f32"; |
| case kAstF64: |
| return "f64"; |
| case kAstStmt: |
| return "<stmt>"; |
| case kAstEnd: |
| return "<end>"; |
| default: |
| return "<unknown>"; |
| } |
| } |
| |
| static const char* TrapReasonName(TrapReason reason) { |
| switch (reason) { |
| case kTrapUnreachable: |
| return "unreachable"; |
| case kTrapMemOutOfBounds: |
| return "memory access out of bounds"; |
| case kTrapDivByZero: |
| return "divide by zero"; |
| case kTrapDivUnrepresentable: |
| return "divide result unrepresentable"; |
| case kTrapRemByZero: |
| return "remainder by zero"; |
| case kTrapFloatUnrepresentable: |
| return "integer result unrepresentable"; |
| case kTrapFuncInvalid: |
| return "invalid function"; |
| case kTrapFuncSigMismatch: |
| return "function signature mismatch"; |
| default: |
| return "<?>"; |
| } |
| } |
| }; |
| } // namespace wasm |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_WASM_OPCODES_H_ |