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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 #include "src/wasm/wasm-opcodes.h" |
| 6 #include "src/signature.h" |
| 7 |
| 8 namespace v8 { |
| 9 namespace internal { |
| 10 namespace wasm { |
| 11 |
| 12 typedef Signature<LocalType> FunctionSig; |
| 13 |
| 14 const char* WasmOpcodes::OpcodeName(WasmOpcode opcode) { |
| 15 switch (opcode) { |
| 16 #define DECLARE_NAME_CASE(name, opcode, sig) \ |
| 17 case kExpr##name: \ |
| 18 return "Expr" #name; |
| 19 FOREACH_OPCODE(DECLARE_NAME_CASE) |
| 20 #undef DECLARE_NAME_CASE |
| 21 default: |
| 22 break; |
| 23 } |
| 24 return "Unknown"; |
| 25 } |
| 26 |
| 27 |
| 28 #define DECLARE_SIG_ENUM(name, ...) kSigEnum_##name, |
| 29 |
| 30 |
| 31 enum WasmOpcodeSig { FOREACH_SIGNATURE(DECLARE_SIG_ENUM) }; |
| 32 |
| 33 |
| 34 // TODO(titzer): not static-initializer safe. Wrap in LazyInstance. |
| 35 #define DECLARE_SIG(name, ...) \ |
| 36 static LocalType kTypes_##name[] = {__VA_ARGS__}; \ |
| 37 static const FunctionSig kSig_##name( \ |
| 38 1, static_cast<int>(arraysize(kTypes_##name)) - 1, kTypes_##name); |
| 39 |
| 40 FOREACH_SIGNATURE(DECLARE_SIG) |
| 41 |
| 42 #define DECLARE_SIG_ENTRY(name, ...) &kSig_##name, |
| 43 |
| 44 static const FunctionSig* kSimpleExprSigs[] = { |
| 45 nullptr, FOREACH_SIGNATURE(DECLARE_SIG_ENTRY)}; |
| 46 |
| 47 static byte kSimpleExprSigTable[256]; |
| 48 |
| 49 |
| 50 // Initialize the signature table. |
| 51 static void InitSigTable() { |
| 52 #define SET_SIG_TABLE(name, opcode, sig) \ |
| 53 kSimpleExprSigTable[opcode] = static_cast<int>(kSigEnum_##sig) + 1; |
| 54 FOREACH_SIMPLE_OPCODE(SET_SIG_TABLE); |
| 55 #undef SET_SIG_TABLE |
| 56 } |
| 57 |
| 58 |
| 59 FunctionSig* WasmOpcodes::Signature(WasmOpcode opcode) { |
| 60 // TODO(titzer): use LazyInstance to make this thread safe. |
| 61 if (kSimpleExprSigTable[kExprI32Add] == 0) InitSigTable(); |
| 62 return const_cast<FunctionSig*>( |
| 63 kSimpleExprSigs[kSimpleExprSigTable[static_cast<byte>(opcode)]]); |
| 64 } |
| 65 |
| 66 |
| 67 // TODO(titzer): pull WASM_64 up to a common header. |
| 68 #if !V8_TARGET_ARCH_32_BIT || V8_TARGET_ARCH_X64 |
| 69 #define WASM_64 1 |
| 70 #else |
| 71 #define WASM_64 0 |
| 72 #endif |
| 73 |
| 74 |
| 75 bool WasmOpcodes::IsSupported(WasmOpcode opcode) { |
| 76 switch (opcode) { |
| 77 #if !WASM_64 |
| 78 // Opcodes not supported on 32-bit platforms. |
| 79 case kExprI64Add: |
| 80 case kExprI64Sub: |
| 81 case kExprI64Mul: |
| 82 case kExprI64DivS: |
| 83 case kExprI64DivU: |
| 84 case kExprI64RemS: |
| 85 case kExprI64RemU: |
| 86 case kExprI64And: |
| 87 case kExprI64Ior: |
| 88 case kExprI64Xor: |
| 89 case kExprI64Shl: |
| 90 case kExprI64ShrU: |
| 91 case kExprI64ShrS: |
| 92 case kExprI64Eq: |
| 93 case kExprI64Ne: |
| 94 case kExprI64LtS: |
| 95 case kExprI64LeS: |
| 96 case kExprI64LtU: |
| 97 case kExprI64LeU: |
| 98 case kExprI64GtS: |
| 99 case kExprI64GeS: |
| 100 case kExprI64GtU: |
| 101 case kExprI64GeU: |
| 102 |
| 103 case kExprI32ConvertI64: |
| 104 case kExprI64SConvertI32: |
| 105 case kExprI64UConvertI32: |
| 106 |
| 107 case kExprF64ReinterpretI64: |
| 108 case kExprI64ReinterpretF64: |
| 109 |
| 110 case kExprI64Clz: |
| 111 case kExprI64Ctz: |
| 112 case kExprI64Popcnt: |
| 113 |
| 114 case kExprF32SConvertI64: |
| 115 case kExprF32UConvertI64: |
| 116 case kExprF64SConvertI64: |
| 117 case kExprF64UConvertI64: |
| 118 |
| 119 #endif |
| 120 |
| 121 case kExprI64SConvertF32: |
| 122 case kExprI64SConvertF64: |
| 123 case kExprI64UConvertF32: |
| 124 case kExprI64UConvertF64: |
| 125 return false; |
| 126 default: |
| 127 return true; |
| 128 } |
| 129 } |
| 130 } // namespace wasm |
| 131 } // namespace internal |
| 132 } // namespace v8 |
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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