| // 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. |
| |
| #include "src/wasm/wasm-opcodes.h" |
| #include "src/messages.h" |
| #include "src/signature.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace wasm { |
| |
| typedef Signature<LocalType> FunctionSig; |
| |
| const char* WasmOpcodes::OpcodeName(WasmOpcode opcode) { |
| switch (opcode) { |
| #define DECLARE_NAME_CASE(name, opcode, sig) \ |
| case kExpr##name: \ |
| return "Expr" #name; |
| FOREACH_OPCODE(DECLARE_NAME_CASE) |
| #undef DECLARE_NAME_CASE |
| default: |
| break; |
| } |
| return "Unknown"; |
| } |
| |
| const char* WasmOpcodes::ShortOpcodeName(WasmOpcode opcode) { |
| switch (opcode) { |
| #define DECLARE_NAME_CASE(name, opcode, sig) \ |
| case kExpr##name: \ |
| return #name; |
| FOREACH_OPCODE(DECLARE_NAME_CASE) |
| #undef DECLARE_NAME_CASE |
| default: |
| break; |
| } |
| return "Unknown"; |
| } |
| |
| std::ostream& operator<<(std::ostream& os, const FunctionSig& sig) { |
| if (sig.return_count() == 0) os << "v"; |
| for (size_t i = 0; i < sig.return_count(); i++) { |
| os << WasmOpcodes::ShortNameOf(sig.GetReturn(i)); |
| } |
| os << "_"; |
| if (sig.parameter_count() == 0) os << "v"; |
| for (size_t i = 0; i < sig.parameter_count(); i++) { |
| os << WasmOpcodes::ShortNameOf(sig.GetParam(i)); |
| } |
| return os; |
| } |
| |
| #define DECLARE_SIG_ENUM(name, ...) kSigEnum_##name, |
| |
| enum WasmOpcodeSig { FOREACH_SIGNATURE(DECLARE_SIG_ENUM) }; |
| |
| // TODO(titzer): not static-initializer safe. Wrap in LazyInstance. |
| #define DECLARE_SIG(name, ...) \ |
| static LocalType kTypes_##name[] = {__VA_ARGS__}; \ |
| static const FunctionSig kSig_##name( \ |
| 1, static_cast<int>(arraysize(kTypes_##name)) - 1, kTypes_##name); |
| |
| FOREACH_SIGNATURE(DECLARE_SIG) |
| |
| #define DECLARE_SIG_ENTRY(name, ...) &kSig_##name, |
| |
| static const FunctionSig* kSimpleExprSigs[] = { |
| nullptr, FOREACH_SIGNATURE(DECLARE_SIG_ENTRY)}; |
| |
| static byte kSimpleExprSigTable[256]; |
| |
| // Initialize the signature table. |
| static void InitSigTable() { |
| #define SET_SIG_TABLE(name, opcode, sig) \ |
| kSimpleExprSigTable[opcode] = static_cast<int>(kSigEnum_##sig) + 1; |
| FOREACH_SIMPLE_OPCODE(SET_SIG_TABLE); |
| FOREACH_ASMJS_COMPAT_OPCODE(SET_SIG_TABLE); |
| #undef SET_SIG_TABLE |
| } |
| |
| class SigTable { |
| public: |
| SigTable() { |
| // TODO(ahaas): Move {InitSigTable} into the class. |
| InitSigTable(); |
| } |
| FunctionSig* Signature(WasmOpcode opcode) const { |
| return const_cast<FunctionSig*>( |
| kSimpleExprSigs[kSimpleExprSigTable[static_cast<byte>(opcode)]]); |
| } |
| }; |
| |
| static base::LazyInstance<SigTable>::type sig_table = LAZY_INSTANCE_INITIALIZER; |
| |
| FunctionSig* WasmOpcodes::Signature(WasmOpcode opcode) { |
| return sig_table.Get().Signature(opcode); |
| } |
| |
| // TODO(titzer): pull WASM_64 up to a common header. |
| #if !V8_TARGET_ARCH_32_BIT || V8_TARGET_ARCH_X64 |
| #define WASM_64 1 |
| #else |
| #define WASM_64 0 |
| #endif |
| |
| int WasmOpcodes::TrapReasonToMessageId(TrapReason reason) { |
| switch (reason) { |
| #define TRAPREASON_TO_MESSAGE(name) \ |
| case k##name: \ |
| return MessageTemplate::kWasm##name; |
| FOREACH_WASM_TRAPREASON(TRAPREASON_TO_MESSAGE) |
| #undef TRAPREASON_TO_MESSAGE |
| default: |
| return MessageTemplate::kNone; |
| } |
| } |
| |
| const char* WasmOpcodes::TrapReasonMessage(TrapReason reason) { |
| return MessageTemplate::TemplateString(TrapReasonToMessageId(reason)); |
| } |
| } // namespace wasm |
| } // namespace internal |
| } // namespace v8 |