예제 #1
0
void WASMModuleParser::parseExportSection()
{
    WASMExportFormat exportFormat;
    READ_EXPORT_FORMAT_OR_FAIL(exportFormat, "Cannot read the export format.");
    switch (exportFormat) {
    case WASMExportFormat::Default: {
        uint32_t functionIndex;
        READ_COMPACT_UINT32_OR_FAIL(functionIndex, "Cannot read the function index.");
        FAIL_IF_FALSE(functionIndex < m_module->functionDeclarations().size(), "The function index is incorrect.");
        // FIXME: Export the function.
        break;
    }
    case WASMExportFormat::Record: {
        uint32_t numberOfExports;
        READ_COMPACT_UINT32_OR_FAIL(numberOfExports, "Cannot read the number of exports.");
        for (uint32_t exportIndex = 0; exportIndex < numberOfExports; ++exportIndex) {
            String exportName;
            READ_STRING_OR_FAIL(exportName, "Cannot read the function export name.");
            // FIXME: Check that exportName is legal.
            uint32_t functionIndex;
            READ_COMPACT_UINT32_OR_FAIL(functionIndex, "Cannot read the function index.");
            FAIL_IF_FALSE(functionIndex < m_module->functionDeclarations().size(), "The function index is incorrect.");
            // FIXME: Export the function.
        }
        break;
    }
    default:
        ASSERT_NOT_REACHED();
    }
}
예제 #2
0
void WASMModuleParser::parseFunctionImportSection()
{
    uint32_t numberOfFunctionImports;
    uint32_t numberOfFunctionImportSignatures;
    READ_COMPACT_UINT32_OR_FAIL(numberOfFunctionImports, "Cannot read the number of function imports.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfFunctionImportSignatures, "Cannot read the number of function import signatures.");
    m_module->functionImports().reserveInitialCapacity(numberOfFunctionImports);
    m_module->functionImportSignatures().reserveInitialCapacity(numberOfFunctionImportSignatures);

    for (uint32_t functionImportIndex = 0; functionImportIndex < numberOfFunctionImports; ++functionImportIndex) {
        WASMFunctionImport functionImport;
        READ_STRING_OR_FAIL(functionImport.functionName, "Cannot read the function import name.");
        m_module->functionImports().uncheckedAppend(functionImport);

        uint32_t numberOfSignatures;
        READ_COMPACT_UINT32_OR_FAIL(numberOfSignatures, "Cannot read the number of signatures.");
        FAIL_IF_FALSE(numberOfSignatures <= numberOfFunctionImportSignatures - m_module->functionImportSignatures().size(), "The number of signatures is incorrect.");

        for (uint32_t i = 0; i < numberOfSignatures; ++i) {
            WASMFunctionImportSignature functionImportSignature;
            READ_COMPACT_UINT32_OR_FAIL(functionImportSignature.signatureIndex, "Cannot read the signature index.");
            FAIL_IF_FALSE(functionImportSignature.signatureIndex < m_module->signatures().size(), "The signature index is incorrect.");
            functionImportSignature.functionImportIndex = functionImportIndex;
            m_module->functionImportSignatures().uncheckedAppend(functionImportSignature);
        }
    }
    FAIL_IF_FALSE(m_module->functionImportSignatures().size() == numberOfFunctionImportSignatures, "The number of function import signatures is incorrect.");
}
예제 #3
0
void WASMModuleParser::parseGlobalSection()
{
    uint32_t numberOfInternalI32GlobalVariables;
    uint32_t numberOfInternalF32GlobalVariables;
    uint32_t numberOfInternalF64GlobalVariables;
    uint32_t numberOfImportedI32GlobalVariables;
    uint32_t numberOfImportedF32GlobalVariables;
    uint32_t numberOfImportedF64GlobalVariables;
    READ_COMPACT_UINT32_OR_FAIL(numberOfInternalI32GlobalVariables, "Cannot read the number of internal int32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfInternalF32GlobalVariables, "Cannot read the number of internal float32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfInternalF64GlobalVariables, "Cannot read the number of internal float64 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfImportedI32GlobalVariables, "Cannot read the number of imported int32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfImportedF32GlobalVariables, "Cannot read the number of imported float32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfImportedF64GlobalVariables, "Cannot read the number of imported float64 global variables.");
    uint32_t numberOfGlobalVariables = numberOfInternalI32GlobalVariables + numberOfInternalF32GlobalVariables + numberOfInternalF64GlobalVariables +
        numberOfImportedI32GlobalVariables + numberOfImportedF32GlobalVariables + numberOfImportedF64GlobalVariables;

    Vector<WASMType>& globalVariableTypes = m_module->globalVariableTypes();
    globalVariableTypes.reserveInitialCapacity(numberOfGlobalVariables);
    for (uint32_t i = 0; i < numberOfInternalI32GlobalVariables; ++i)
        globalVariableTypes.uncheckedAppend(WASMType::I32);
    for (uint32_t i = 0; i < numberOfInternalF32GlobalVariables; ++i)
        globalVariableTypes.uncheckedAppend(WASMType::F32);
    for (uint32_t i = 0; i < numberOfInternalF64GlobalVariables; ++i)
        globalVariableTypes.uncheckedAppend(WASMType::F64);
    for (uint32_t i = 0; i < numberOfImportedI32GlobalVariables; ++i) {
        String importName;
        READ_STRING_OR_FAIL(importName, "Cannot read the import name of an int32 global variable.");
        globalVariableTypes.uncheckedAppend(WASMType::I32);
    }
    for (uint32_t i = 0; i < numberOfImportedF32GlobalVariables; ++i) {
        String importName;
        READ_STRING_OR_FAIL(importName, "Cannot read the import name of a float32 global variable.");
        globalVariableTypes.uncheckedAppend(WASMType::F32);
    }
    for (uint32_t i = 0; i < numberOfImportedF64GlobalVariables; ++i) {
        String importName;
        READ_STRING_OR_FAIL(importName, "Cannot read the import name of a float64 global variable.");
        globalVariableTypes.uncheckedAppend(WASMType::F64);
    }
}
예제 #4
0
void WASMModuleParser::parseFunctionImportSection(ExecState* exec)
{
    uint32_t numberOfFunctionImports;
    uint32_t numberOfFunctionImportSignatures;
    READ_COMPACT_UINT32_OR_FAIL(numberOfFunctionImports, "Cannot read the number of function imports.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfFunctionImportSignatures, "Cannot read the number of function import signatures.");
    m_module->functionImports().reserveInitialCapacity(numberOfFunctionImports);
    m_module->functionImportSignatures().reserveInitialCapacity(numberOfFunctionImportSignatures);
    m_module->importedFunctions().reserveInitialCapacity(numberOfFunctionImports);

    for (uint32_t functionImportIndex = 0; functionImportIndex < numberOfFunctionImports; ++functionImportIndex) {
        WASMFunctionImport functionImport;
        READ_STRING_OR_FAIL(functionImport.functionName, "Cannot read the function import name.");
        m_module->functionImports().uncheckedAppend(functionImport);

        uint32_t numberOfSignatures;
        READ_COMPACT_UINT32_OR_FAIL(numberOfSignatures, "Cannot read the number of signatures.");
        FAIL_IF_FALSE(numberOfSignatures <= numberOfFunctionImportSignatures - m_module->functionImportSignatures().size(), "The number of signatures is incorrect.");

        for (uint32_t i = 0; i < numberOfSignatures; ++i) {
            WASMFunctionImportSignature functionImportSignature;
            READ_COMPACT_UINT32_OR_FAIL(functionImportSignature.signatureIndex, "Cannot read the signature index.");
            FAIL_IF_FALSE(functionImportSignature.signatureIndex < m_module->signatures().size(), "The signature index is incorrect.");
            functionImportSignature.functionImportIndex = functionImportIndex;
            m_module->functionImportSignatures().uncheckedAppend(functionImportSignature);
        }

        JSValue value;
        getImportedValue(exec, functionImport.functionName, value);
        PROPAGATE_ERROR();
        FAIL_IF_FALSE(value.isFunction(), "\"" + functionImport.functionName + "\" is not a function.");
        JSFunction* function = jsCast<JSFunction*>(value.asCell());
        m_module->importedFunctions().uncheckedAppend(WriteBarrier<JSFunction>(m_vm, m_module.get(), function));
    }
    FAIL_IF_FALSE(m_module->functionImportSignatures().size() == numberOfFunctionImportSignatures, "The number of function import signatures is incorrect.");
}
예제 #5
0
void WASMModuleParser::parseGlobalSection(ExecState* exec)
{
    uint32_t numberOfInternalI32GlobalVariables;
    uint32_t numberOfInternalF32GlobalVariables;
    uint32_t numberOfInternalF64GlobalVariables;
    uint32_t numberOfImportedI32GlobalVariables;
    uint32_t numberOfImportedF32GlobalVariables;
    uint32_t numberOfImportedF64GlobalVariables;
    READ_COMPACT_UINT32_OR_FAIL(numberOfInternalI32GlobalVariables, "Cannot read the number of internal int32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfInternalF32GlobalVariables, "Cannot read the number of internal float32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfInternalF64GlobalVariables, "Cannot read the number of internal float64 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfImportedI32GlobalVariables, "Cannot read the number of imported int32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfImportedF32GlobalVariables, "Cannot read the number of imported float32 global variables.");
    READ_COMPACT_UINT32_OR_FAIL(numberOfImportedF64GlobalVariables, "Cannot read the number of imported float64 global variables.");
    uint32_t numberOfGlobalVariables = numberOfInternalI32GlobalVariables + numberOfInternalF32GlobalVariables + numberOfInternalF64GlobalVariables +
        numberOfImportedI32GlobalVariables + numberOfImportedF32GlobalVariables + numberOfImportedF64GlobalVariables;

    Vector<WASMType>& globalVariableTypes = m_module->globalVariableTypes();
    globalVariableTypes.reserveInitialCapacity(numberOfGlobalVariables);
    Vector<JSWASMModule::GlobalVariable>& globalVariables = m_module->globalVariables();
    globalVariables.reserveInitialCapacity(numberOfGlobalVariables);
    for (uint32_t i = 0; i < numberOfInternalI32GlobalVariables; ++i) {
        globalVariableTypes.uncheckedAppend(WASMType::I32);
        globalVariables.uncheckedAppend(JSWASMModule::GlobalVariable(0));
    }
    for (uint32_t i = 0; i < numberOfInternalF32GlobalVariables; ++i) {
        globalVariableTypes.uncheckedAppend(WASMType::F32);
        globalVariables.uncheckedAppend(JSWASMModule::GlobalVariable(0.0f));
    }
    for (uint32_t i = 0; i < numberOfInternalF64GlobalVariables; ++i) {
        globalVariableTypes.uncheckedAppend(WASMType::F64);
        globalVariables.uncheckedAppend(JSWASMModule::GlobalVariable(0.0));
    }
    for (uint32_t i = 0; i < numberOfImportedI32GlobalVariables; ++i) {
        String importName;
        READ_STRING_OR_FAIL(importName, "Cannot read the import name of an int32 global variable.");
        globalVariableTypes.uncheckedAppend(WASMType::I32);
        JSValue value;
        getImportedValue(exec, importName, value);
        PROPAGATE_ERROR();
        FAIL_IF_FALSE(value.isPrimitive() && !value.isSymbol(), "\"" + importName + "\" is not a primitive or is a Symbol.");
        globalVariables.uncheckedAppend(JSWASMModule::GlobalVariable(value.toInt32(exec)));
    }
    for (uint32_t i = 0; i < numberOfImportedF32GlobalVariables; ++i) {
        String importName;
        READ_STRING_OR_FAIL(importName, "Cannot read the import name of a float32 global variable.");
        globalVariableTypes.uncheckedAppend(WASMType::F32);
        JSValue value;
        getImportedValue(exec, importName, value);
        PROPAGATE_ERROR();
        FAIL_IF_FALSE(value.isPrimitive() && !value.isSymbol(), "\"" + importName + "\" is not a primitive or is a Symbol.");
        globalVariables.uncheckedAppend(JSWASMModule::GlobalVariable(static_cast<float>(value.toNumber(exec))));
    }
    for (uint32_t i = 0; i < numberOfImportedF64GlobalVariables; ++i) {
        String importName;
        READ_STRING_OR_FAIL(importName, "Cannot read the import name of a float64 global variable.");
        globalVariableTypes.uncheckedAppend(WASMType::F64);
        JSValue value;
        getImportedValue(exec, importName, value);
        PROPAGATE_ERROR();
        FAIL_IF_FALSE(value.isPrimitive() && !value.isSymbol(), "\"" + importName + "\" is not a primitive or is a Symbol.");
        globalVariables.uncheckedAppend(JSWASMModule::GlobalVariable(value.toNumber(exec)));
    }
}