mirror of
https://github.com/i-net-software/JWebAssembly.git
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740 lines
30 KiB
Java
740 lines
30 KiB
Java
/*
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* Copyright 2018 - 2020 Volker Berlin (i-net software)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package de.inetsoftware.jwebassembly.module;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.function.Function;
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import javax.annotation.Nonnegative;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import de.inetsoftware.classparser.ClassFile;
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import de.inetsoftware.classparser.ConstantClass;
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import de.inetsoftware.classparser.LocalVariableTable;
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import de.inetsoftware.classparser.Member;
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import de.inetsoftware.classparser.MethodInfo;
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import de.inetsoftware.jwebassembly.WasmException;
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import de.inetsoftware.jwebassembly.javascript.JavaScriptNewMultiArrayFunctionName;
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import de.inetsoftware.jwebassembly.javascript.NonGC;
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import de.inetsoftware.jwebassembly.module.StackInspector.StackValue;
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import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
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import de.inetsoftware.jwebassembly.wasm.AnyType;
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import de.inetsoftware.jwebassembly.wasm.ArrayOperator;
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import de.inetsoftware.jwebassembly.wasm.ArrayType;
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import de.inetsoftware.jwebassembly.wasm.MemoryOperator;
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import de.inetsoftware.jwebassembly.wasm.NamedStorageType;
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import de.inetsoftware.jwebassembly.wasm.NumericOperator;
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import de.inetsoftware.jwebassembly.wasm.StructOperator;
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import de.inetsoftware.jwebassembly.wasm.ValueType;
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import de.inetsoftware.jwebassembly.wasm.ValueTypeParser;
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import de.inetsoftware.jwebassembly.wasm.VariableOperator;
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import de.inetsoftware.jwebassembly.wasm.WasmBlockOperator;
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/**
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* Base class for Code Building.
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*
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* @author Volker Berlin
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*/
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public abstract class WasmCodeBuilder {
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private final LocaleVariableManager localVariables = new LocaleVariableManager();
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private final List<WasmInstruction> instructions = new ArrayList<>();
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private TypeManager types;
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private FunctionManager functions;
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private WasmOptions options;
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private StringManager strings;
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private ClassFileLoader classFileLoader;
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/**
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* Initialize the code builder;
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*
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* @param options
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* compiler properties
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* @param classFileLoader
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* for loading the class files
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*/
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void init( WasmOptions options, ClassFileLoader classFileLoader ) {
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this.localVariables.init( options.types );
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this.types = options.types;
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this.functions = options.functions;
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this.strings = options.strings;
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this.options = options;
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this.classFileLoader = classFileLoader;
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}
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/**
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* Get the list of instructions
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*
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* @return the list
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*/
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@Nonnull
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List<WasmInstruction> getInstructions() {
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return instructions;
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}
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/**
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* Get the manager of local variables
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* @return the manager
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*/
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@Nonnull
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LocaleVariableManager getLocalVariables() {
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return localVariables;
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}
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/**
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* Check if the last instruction is a return instruction
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*
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* @return true, if a return
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*/
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boolean isEndsWithReturn() {
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WasmInstruction instr = instructions.get( instructions.size() - 1 );
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if( instr.getType() == Type.Block ) {
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return ((WasmBlockInstruction)instr).getOperation() == WasmBlockOperator.RETURN;
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}
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return false;
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}
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/**
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* We need one value from the stack inside of a block. We need to find the WasmInstruction on which the block can
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* start. If this a function call or numeric expression this can be complex to find the right point.
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*
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* @param count
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* the count of values on the stack back. 1 means the last value. 2 means the penultimate value.
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* @return the code position that push the last instruction
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*/
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int findBlockStartCodePosition( int count ) {
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return findBlockStart( count, true );
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}
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/**
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* We need one value from the stack inside of a block. We need to find the WasmInstruction on which the block can
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* start. If this a function call or numeric expression this can be complex to find the right point.
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*
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* @param count
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* the count of values on the stack back. 1 means the last value. 2 means the penultimate value.
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* @param codePosition
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* true, get the code position; false, get the index in the instructions
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* @return the code position that push the last instruction
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*/
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private int findBlockStart( int count, boolean codePosition ) {
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int valueCount = 0;
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List<WasmInstruction> instructions = this.instructions;
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for( int i = instructions.size() - 1; i >= 0; i-- ) {
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WasmInstruction instr = instructions.get( i );
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AnyType valueType = instr.getPushValueType();
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if( valueType != null ) {
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valueCount++;
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}
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valueCount -= instr.getPopCount();
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if( valueCount == count ) {
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return codePosition ? instr.getCodePosition() : i;
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}
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}
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throw new WasmException( "Start position not found", -1 ); // should never occur
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}
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/**
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* We need the value type from the stack.
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*
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* @param count
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* the count of values on the stack back. 1 means the last value. 2 means the penultimate value.
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* @param javaCodePos
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* current code position for which the stack is inspected
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* @return the type of the last push value
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*/
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@Nonnull
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AnyType findValueTypeFromStack( int count, int javaCodePos ) {
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return StackInspector.findInstructionThatPushValue( instructions, count, javaCodePos ).instr.getPushValueType();
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}
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/**
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* Find the instruction that push the x-th value to the stack.
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*
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* @param count
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* the count of values on the stack back. 1 means the last value. 2 means the penultimate value.
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* @param javaCodePos
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* current code position for which the stack is inspected
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* @return the instruction
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*/
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private WasmInstruction findInstructionThatPushValue( int count, int javaCodePos ) {
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return StackInspector.findInstructionThatPushValue( instructions, count, javaCodePos ).instr;
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}
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/**
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* Get the data types of the local variables. The value is only valid until the next call.
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*
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* @param paramCount
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* the count of method parameter which should be exclude
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* @return the reused list with fresh values
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*/
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List<AnyType> getLocalTypes( int paramCount ) {
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return localVariables.getLocalTypes( paramCount );
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}
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/**
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* Get the name of the variable or null if no name available
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*
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* @param idx
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* the wasm variable index
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* @return the name
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*/
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String getLocalName( int idx ) {
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return localVariables.getLocalName( idx );
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}
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/**
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* Get the slot of the temporary variable.
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*
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* @param valueType
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* the valueType for the variable
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* @param startCodePosition
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* the start of the Java code position
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* @param endCodePosition
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* the end of the Java code position
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* @return the slot
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*/
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int getTempVariable( AnyType valueType, int startCodePosition, int endCodePosition ) {
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return localVariables.getTempVariable( valueType, startCodePosition, endCodePosition );
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}
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/**
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* Get the type manager.
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*
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* @return the type manager
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*/
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protected TypeManager getTypeManager() {
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return types;
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}
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/**
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* Reset the code builder.
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*
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* @param variableTable
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* variable table of the Java method.
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* @param method
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* the method with signature as fallback for a missing variable table. If null signature is used and the method must be static.
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* @param signature
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* alternative for method signature, can be null if method is set
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*/
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protected void reset( LocalVariableTable variableTable, MethodInfo method, Iterator<AnyType> signature ) {
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instructions.clear();
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localVariables.reset( variableTable, method, signature );
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}
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/**
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* Calculate the index of the variables
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*/
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protected void calculateVariables() {
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localVariables.calculate();
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}
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/**
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* Create a WasmLoadStoreInstruction.
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*
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* @param valueType
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* the value type
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* @param load
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* true: if load
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* @param javaIdx
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* the memory/slot index of the variable in Java byte code
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addLoadStoreInstruction( AnyType valueType, boolean load, @Nonnegative int javaIdx, int javaCodePos, int lineNumber ) {
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localVariables.use( valueType, javaIdx, javaCodePos );
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instructions.add( new WasmLoadStoreInstruction( load ? VariableOperator.get : VariableOperator.set, javaIdx, localVariables, javaCodePos, lineNumber ) );
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}
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/**
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* Create a WasmLoadStoreInstruction local.get/local.set.
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*
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* @param op
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* the operation
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* @param wasmIdx
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* the index of the variable
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addLocalInstruction( VariableOperator op, @Nonnegative int wasmIdx, int javaCodePos, int lineNumber ) {
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switch( op ) {
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case set:
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case tee:
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AnyType valueType = findValueTypeFromStack( 1, javaCodePos );
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localVariables.useIndex( valueType, wasmIdx );
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}
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instructions.add( new WasmLocalInstruction( op, wasmIdx, localVariables, javaCodePos, lineNumber ) );
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}
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/**
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* Create a WasmDupInstruction.
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*
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addDupInstruction( int javaCodePos, int lineNumber ) {
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WasmInstruction instr = findInstructionThatPushValue( 1, javaCodePos );
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AnyType type = instr.getPushValueType();
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int varIndex = -1;
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// if it is a GET to a local variable then we can use it
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if( instr.getType() == Type.Local ) {
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WasmLocalInstruction local1 = (WasmLocalInstruction)instr;
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if( local1.getOperator() == VariableOperator.get ) {
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varIndex = local1.getIndex();
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}
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}
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//alternate we need to create a new locale variable
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if( varIndex < 0 ) {
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varIndex = getTempVariable( type, javaCodePos, javaCodePos + 1 );
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instructions.add( new WasmLoadStoreInstruction( VariableOperator.tee, varIndex, localVariables, javaCodePos, lineNumber ) );
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instructions.add( new WasmLoadStoreInstruction( VariableOperator.get, varIndex, localVariables, javaCodePos, lineNumber ) );
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// an alternative solution can be a function call with multiple return values but this seems to be slower
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// new SyntheticFunctionName( "dup" + storeType, "local.get 0 local.get 0 return", storeType, null, storeType, storeType ), codePos, lineNumber )
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} else {
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instructions.add( new WasmLocalInstruction( VariableOperator.get, varIndex, localVariables, javaCodePos, lineNumber ) );
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}
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}
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/**
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* Add a global instruction
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*
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* @param load
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* true: if load
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* @param ref
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* reference to a static field
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addGlobalInstruction( boolean load, Member ref, int javaCodePos, int lineNumber ) {
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FunctionName name = new FunctionName( ref );
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AnyType type = new ValueTypeParser( ref.getType(), types ).next();
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instructions.add( new WasmGlobalInstruction( load, name, type, javaCodePos, lineNumber ) );
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functions.markClassAsUsed( name.className );
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}
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/**
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* Add a WasmTableInstruction table.get/table.set.
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*
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* @param load
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* true: if load
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* @param idx
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* the index of the table
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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@Nonnull
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protected void addTableInstruction( boolean load, @Nonnegative int idx, int javaCodePos, int lineNumber ) {
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instructions.add( new WasmTableInstruction( load, idx, javaCodePos, lineNumber ) );
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}
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/**
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* Add a constant instruction.
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*
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* @param value
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* the value
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* @param valueType
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* the value type
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addConstInstruction( Number value, ValueType valueType, int javaCodePos, int lineNumber ) {
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instructions.add( new WasmConstInstruction( value, valueType, javaCodePos, lineNumber ) );
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}
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/**
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* Add a constant instruction with unknown value type.
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*
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* @param value
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* the value
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addConstInstruction( Object value, int javaCodePos, int lineNumber ) {
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if( value.getClass() == String.class ) {
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Integer id = strings.get( value );
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FunctionName name = strings.getStringConstantFunction();
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instructions.add( new WasmConstInstruction( id, ValueType.i32, javaCodePos, lineNumber ) );
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instructions.add( new WasmCallInstruction( name, javaCodePos, lineNumber, types, false, (String)value ) );
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} else if( value instanceof Number ) {
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instructions.add( new WasmConstInstruction( (Number)value, javaCodePos, lineNumber ) );
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} else if( value instanceof ConstantClass ) {
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String className = ((ConstantClass)value).getName();
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Integer id = types.valueOf( className ).getClassIndex();
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FunctionName name = types.getClassConstantFunction();
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instructions.add( new WasmConstInstruction( id, ValueType.i32, javaCodePos, lineNumber ) );
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addCallInstruction( name, javaCodePos, lineNumber );
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} else {
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//TODO There can be ConstantClass, MethodType and MethodHandle
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throw new WasmException( "Class constants are not supported. : " + value, lineNumber );
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}
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}
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/**
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* Add a numeric operation instruction
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*
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* @param numOp
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* the operation
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* @param valueType
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* the value type
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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* @return the added instruction
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*/
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protected WasmNumericInstruction addNumericInstruction( @Nullable NumericOperator numOp, @Nullable ValueType valueType, int javaCodePos, int lineNumber ) {
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WasmNumericInstruction numeric = new WasmNumericInstruction( numOp, valueType, javaCodePos, lineNumber );
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instructions.add( numeric );
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if( !options.useGC() && options.ref_eq == null && (numOp == NumericOperator.ref_eq || numOp == NumericOperator.ref_ne ) ) {
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functions.markAsNeeded( options.ref_eq = getNonGC( "ref_eq", lineNumber ) );
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}
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return numeric;
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}
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/**
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* Add a value convert/cast instruction.
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*
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* @param conversion
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* the conversion
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addConvertInstruction( ValueTypeConvertion conversion, int javaCodePos, int lineNumber ) {
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instructions.add( new WasmConvertInstruction( conversion, javaCodePos, lineNumber ) );
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}
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/**
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* Add a static function call.
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*
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* @param name
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* the function name that should be called
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* @param javaCodePos
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* the code position/offset in the Java method
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* @param lineNumber
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* the line number in the Java source code
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*/
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protected void addCallInstruction( FunctionName name, int javaCodePos, int lineNumber ) {
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name = functions.markAsNeeded( name );
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boolean needThisParameter = functions.needThisParameter( name );
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WasmCallInstruction instruction = new WasmCallInstruction( name, javaCodePos, lineNumber, types, needThisParameter );
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if( "<init>".equals( name.methodName ) ) {
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// check if there a factory for the constructor in JavaScript then we need to do some more complex patching
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Function<String, Object> importAnannotation = functions.getImportAnannotation( name );
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FunctionName factoryName = null;
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if( importAnannotation != null ) { // JavaScript replacement for a constructor via import
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// The new signature need a return value. The <init> of Java has ever a void return value
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String signature = name.signature;
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signature = signature.substring( 0, signature.length() - 1 ) + "Ljava/lang/Object;";
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factoryName = new ImportSyntheticFunctionName( "String", "init", signature, importAnannotation );
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} else {
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MethodInfo replace = functions.replace( name, null );
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if( replace != null && !"<init>".equals( replace.getName() ) ) {
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// the constructor was replaced with a factory method. Typical this method called then a JavaScript replacement
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factoryName = new FunctionName( replace );
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}
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}
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if( factoryName != null ) {
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// the constructor was replaced we need also replace the create instance instruction
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List<WasmInstruction> instructions = this.instructions;
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for( int i = instructions.size() - 1; i >= 0; i-- ) {
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WasmInstruction instr = instructions.get( i );
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if( instr.getType() == Type.Struct ) {
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WasmStructInstruction struct = (WasmStructInstruction)instr;
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if( struct.getOperator() == StructOperator.NEW_DEFAULT ) {
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instructions.set( i, new WasmNopInstruction( struct.getCodePosition(), struct.getLineNumber() ) ); // replace NEW_DEFAULT with Nop, Nop because the code position can be needed for the branch manager
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instr = instructions.get( ++i );
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// if( instr.getType() == Type.Dup ) {
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// instructions.remove( i ); // dup of the instance reference if it is later assign, missing if the object after the constructor is never assign
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// }
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break;
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}
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}
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}
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// the new instruction
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instruction = new WasmCallInstruction( factoryName, javaCodePos, lineNumber, types, false );
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}
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}
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instructions.add( instruction );
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functions.markClassAsUsed( name.className );
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}
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/**
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* Add indirect call to the instruction.
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*
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* @param indirectCall
|
|
* the instruction
|
|
*/
|
|
private void addCallIndirectInstruction( WasmCallIndirectInstruction indirectCall ) {
|
|
// For access to the vtable the THIS parameter must be duplicated on stack before the function parameters
|
|
|
|
// find the instruction that THIS push on the stack
|
|
int count = indirectCall.getPopCount();
|
|
int javaCodePos = indirectCall.getCodePosition();
|
|
StackValue stackValue = StackInspector.findInstructionThatPushValue( instructions, count, javaCodePos );
|
|
WasmInstruction instr = stackValue.instr;
|
|
int varIndex = -1;
|
|
// if it is a GET to a local variable then we can use it
|
|
if( instr.getType() == Type.Local ) {
|
|
WasmLocalInstruction local1 = (WasmLocalInstruction)instr;
|
|
if( local1.getOperator() == VariableOperator.get ) {
|
|
varIndex = local1.getIndex();
|
|
}
|
|
}
|
|
//alternate we need to create a new locale variable
|
|
if( varIndex < 0 ) {
|
|
varIndex = getTempVariable( indirectCall.getThisType(), instr.getCodePosition(), javaCodePos + 1 );
|
|
int idx = count == 1 ? instructions.size() : stackValue.idx + 1;
|
|
instructions.add( idx, new DupThis( indirectCall, varIndex, instr.getCodePosition() + 1 ) );
|
|
}
|
|
indirectCall.setVariableIndexOfThis( varIndex );
|
|
instructions.add( indirectCall );
|
|
options.registerGet_i32(); // for later access of the vtable
|
|
}
|
|
|
|
/**
|
|
* Add a virtual/method function call.
|
|
*
|
|
* @param name
|
|
* the function name that should be called
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addCallVirtualInstruction( FunctionName name, int javaCodePos, int lineNumber ) {
|
|
name = functions.markAsNeeded( name );
|
|
addCallIndirectInstruction( new WasmCallVirtualInstruction( name, javaCodePos, lineNumber, types, options ) );
|
|
options.getCallVirtual(); // mark the function as needed
|
|
functions.markClassAsUsed( name.className );
|
|
}
|
|
|
|
/**
|
|
* Add interface function call
|
|
* @param name
|
|
* the function name that should be called
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addCallInterfaceInstruction( FunctionName name, int javaCodePos, int lineNumber ) {
|
|
//TODO name = functions.markAsNeeded( name );
|
|
addCallIndirectInstruction( new WasmCallInterfaceInstruction( name, javaCodePos, lineNumber, types, options ) );
|
|
functions.markClassAsUsed( name.className );
|
|
}
|
|
|
|
/**
|
|
* Add a block operation.
|
|
*
|
|
* @param op
|
|
* the operation
|
|
* @param data
|
|
* extra data for some operations
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addBlockInstruction( WasmBlockOperator op, @Nullable Object data, int javaCodePos, int lineNumber ) {
|
|
instructions.add( new WasmBlockInstruction( op, data, javaCodePos, lineNumber ) );
|
|
}
|
|
|
|
/**
|
|
* Add a no operation to the instruction list as marker on the code position. This instruction will not be write to
|
|
* the output.
|
|
*
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addNopInstruction( int javaCodePos, int lineNumber ) {
|
|
instructions.add( new WasmNopInstruction( javaCodePos, lineNumber ) );
|
|
}
|
|
|
|
/**
|
|
* Add a Jump instruction for later stack inspection
|
|
*
|
|
* @param jumpPos
|
|
* the position of the jump
|
|
* @param popCount
|
|
* the the count of values that are removed from the stack.
|
|
* @param pushValueType
|
|
* optional type of a push value
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addJumpPlaceholder( int jumpPos, int popCount, AnyType pushValueType, int javaCodePos, int lineNumber ) {
|
|
instructions.add( new JumpInstruction( jumpPos, popCount, pushValueType, javaCodePos, lineNumber ) );
|
|
}
|
|
|
|
/**
|
|
* Get a non GC polyfill function.
|
|
* @param name the function name
|
|
* @param lineNumber the line number for a possible error
|
|
* @return the function name
|
|
*/
|
|
private FunctionName getNonGC( String name, int lineNumber ) {
|
|
try {
|
|
ClassFile classFile = classFileLoader.get( NonGC.class.getName().replace( '.', '/' ) );
|
|
for( MethodInfo method : classFile.getMethods() ) {
|
|
if( name.equals( method.getName() ) ) {
|
|
return new FunctionName( method );
|
|
}
|
|
}
|
|
} catch( IOException ex ) {
|
|
throw WasmException.create( ex, lineNumber );
|
|
}
|
|
throw new WasmException( "Not implemented NonGC polyfill function: " + name, lineNumber );
|
|
}
|
|
|
|
/**
|
|
* Add an array operation to the instruction list as marker on the code position.
|
|
*
|
|
* @param op
|
|
* the operation
|
|
* @param type
|
|
* the array type
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addArrayInstruction( ArrayOperator op, AnyType type, int javaCodePos, int lineNumber ) {
|
|
if( options.useGC() ) {
|
|
instructions.add( new WasmArrayInstruction( op, type, types, javaCodePos, lineNumber ) );
|
|
} else {
|
|
if( type.getCode() >= 0 || type.getCode() == ValueType.anyref.getCode() ) {
|
|
type = ValueType.anyref; // handle all not native types as anyref
|
|
}
|
|
String api = "array_" + op.toString().toLowerCase() + "_" + type;
|
|
FunctionName name = getNonGC( api, lineNumber );
|
|
addCallInstruction( name, javaCodePos, lineNumber );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add a new multi dimensional array instruction
|
|
*
|
|
* @param dim
|
|
* the dimension of the array >= 2
|
|
* @param typeName
|
|
* the full type name
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addMultiNewArrayInstruction( int dim, String typeName, int javaCodePos, int lineNumber ) {
|
|
ArrayType type = (ArrayType)new ValueTypeParser( typeName, types ).next();
|
|
if( options.useGC() ) {
|
|
throw new WasmException( "multi new array is not supported", lineNumber );
|
|
} else {
|
|
FunctionName name = new JavaScriptNewMultiArrayFunctionName( dim, type );
|
|
addCallInstruction( name, javaCodePos, lineNumber );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add a struct/object operation to the instruction list.
|
|
*
|
|
* @param op
|
|
* the operation
|
|
* @param typeName
|
|
* the type name
|
|
* @param fieldName
|
|
* the name of field if needed for the operation
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addStructInstruction( StructOperator op, @Nonnull String typeName, @Nullable NamedStorageType fieldName, int javaCodePos, int lineNumber ) {
|
|
switch( op ) {
|
|
case INSTANCEOF:
|
|
instructions.add( new WasmConstInstruction( types.valueOf( typeName ).getClassIndex(), javaCodePos, lineNumber ) );
|
|
FunctionName name = options.getInstanceOf();
|
|
instructions.add( new WasmCallInstruction( name, javaCodePos, lineNumber, types, false ) );
|
|
return;
|
|
case CAST:
|
|
instructions.add( new WasmConstInstruction( types.valueOf( typeName ).getClassIndex(), javaCodePos, lineNumber ) );
|
|
name = options.getCast();
|
|
instructions.add( new WasmCallInstruction( name, javaCodePos, lineNumber, types, false ) );
|
|
return;
|
|
}
|
|
WasmStructInstruction structInst = new WasmStructInstruction( op, typeName, fieldName, javaCodePos, lineNumber, types );
|
|
instructions.add( structInst );
|
|
if( !options.useGC() ) {
|
|
SyntheticFunctionName name = structInst.createNonGcFunction();
|
|
if( name != null ) {
|
|
functions.markAsNeeded( name );
|
|
functions.markAsImport( name, name.getAnnotation() );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create an instance of a load/store to the linear memory instruction
|
|
*
|
|
* @param op
|
|
* the operation
|
|
* @param type
|
|
* the type of the static field
|
|
* @param offset
|
|
* the base offset which will be added to the offset value on the stack
|
|
* @param alignment
|
|
* the alignment of the value on the linear memory (0: 8 Bit; 1: 16 Bit; 2: 32 Bit)
|
|
* @param javaCodePos
|
|
* the code position/offset in the Java method
|
|
* @param lineNumber
|
|
* the line number in the Java source code
|
|
*/
|
|
protected void addMemoryInstruction( MemoryOperator op, ValueType type, int offset, int alignment, int javaCodePos, int lineNumber ) {
|
|
instructions.add( new WasmMemoryInstruction( op, type, offset, alignment, javaCodePos, lineNumber ) );
|
|
}
|
|
}
|