mirror of
https://github.com/i-net-software/JWebAssembly.git
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Improve WasmCodeBuilder for later use with WatParser.
This commit is contained in:
Volker Berlin
parent
db4a6e19bd
commit
4fd7d44263
@ -16,10 +16,8 @@
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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.List;
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import javax.annotation.Nonnegative;
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import javax.annotation.Nonnull;
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import de.inetsoftware.classparser.Code;
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@ -35,26 +33,7 @@ import de.inetsoftware.jwebassembly.WasmException;
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*/
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class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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private LocaleVariableManager localVariables = new LocaleVariableManager();
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private final List<WasmInstruction> instructions = new ArrayList<>();
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private BranchManger branchManager = new BranchManger( instructions );
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/**
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* {@inheritDoc}
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*/
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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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* {@inheritDoc}
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*/
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@Override
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List<ValueType> getLocalTypes( int paramCount ) {
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return localVariables.getLocalTypes( paramCount );
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}
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private BranchManger branchManager = new BranchManger( getInstructions() );
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/**
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* Build the wasm instructions
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@ -69,12 +48,12 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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void buildCode( @Nonnull Code code, boolean hasReturn ) {
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CodeInputStream byteCode = null;
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try {
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localVariables.reset();
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reset();
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branchManager.reset( code.getExceptionTable() );
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byteCode = code.getByteCode();
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writeCode( byteCode, code.getConstantPool(), hasReturn );
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localVariables.calculate();
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calculateVariables();
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} catch( Exception ioex ) {
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int lineNumber = byteCode == null ? -1 : byteCode.getLineNumber();
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throw WasmException.create( ioex, lineNumber );
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@ -95,11 +74,9 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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* if some Java code can't converted
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*/
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private void writeCode( CodeInputStream byteCode, ConstantPool constantPool, boolean hasReturn ) throws WasmException {
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instructions.clear();
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boolean endWithReturn = false;
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try {
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while( byteCode.available() > 0 ) {
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WasmInstruction instr = null;
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int codePos = byteCode.getCodePosition();
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endWithReturn = false;
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int op = byteCode.readUnsignedByte();
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@ -114,70 +91,70 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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case 6: // iconst_3
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case 7: // iconst_4
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case 8: // iconst_5
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instr = new WasmConstInstruction( Integer.valueOf( op - 3 ), ValueType.i32, codePos );
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addConstInstruction( Integer.valueOf( op - 3 ), ValueType.i32, codePos );
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break;
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case 9: // lconst_0
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case 10: // lconst_1
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instr = new WasmConstInstruction( Long.valueOf( op - 9 ), ValueType.i64, codePos );
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addConstInstruction( Long.valueOf( op - 9 ), ValueType.i64, codePos );
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break;
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case 11: // fconst_0
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case 12: // fconst_1
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case 13: // fconst_2
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instr = new WasmConstInstruction( Float.valueOf( op - 11 ), ValueType.f32, codePos );
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addConstInstruction( Float.valueOf( op - 11 ), ValueType.f32, codePos );
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break;
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case 14: // dconst_0
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case 15: // dconst_1
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instr = new WasmConstInstruction( Double.valueOf( op - 14 ), ValueType.f64, codePos );
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addConstInstruction( Double.valueOf( op - 14 ), ValueType.f64, codePos );
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break;
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case 16: // bipush
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instr = new WasmConstInstruction( Integer.valueOf( byteCode.readByte() ), ValueType.i32, codePos );
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addConstInstruction( Integer.valueOf( byteCode.readByte() ), ValueType.i32, codePos );
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break;
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case 17: // sipush
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instr = new WasmConstInstruction( Integer.valueOf( byteCode.readShort() ), ValueType.i32, codePos );
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addConstInstruction( Integer.valueOf( byteCode.readShort() ), ValueType.i32, codePos );
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break;
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case 18: // ldc
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instr = new WasmConstInstruction( (Number)constantPool.get( byteCode.readUnsignedByte() ), codePos );
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addConstInstruction( (Number)constantPool.get( byteCode.readUnsignedByte() ), codePos );
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break;
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case 19: // ldc_w
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case 20: // ldc2_w
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instr = new WasmConstInstruction( (Number)constantPool.get( byteCode.readUnsignedShort() ), codePos );
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addConstInstruction( (Number)constantPool.get( byteCode.readUnsignedShort() ), codePos );
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break;
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case 21: // iload
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instr = loadStore( ValueType.i32, true, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.i32, true, byteCode.readUnsignedByte(), codePos );
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break;
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case 22: // lload
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instr = loadStore( ValueType.i64, true, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.i64, true, byteCode.readUnsignedByte(), codePos );
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break;
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case 23: // fload
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instr = loadStore( ValueType.f32, true, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.f32, true, byteCode.readUnsignedByte(), codePos );
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break;
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case 24: // dload
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instr = loadStore( ValueType.f64, true, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.f64, true, byteCode.readUnsignedByte(), codePos );
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break;
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//TODO case 25: // aload
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case 26: // iload_0
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case 27: // iload_1
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case 28: // iload_2
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case 29: // iload_3
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instr = loadStore( ValueType.i32, true, op - 26, codePos );
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addLoadStoreInstruction( ValueType.i32, true, op - 26, codePos );
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break;
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case 30: // lload_0
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case 31: // lload_1
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case 32: // lload_2
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case 33: // lload_3
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instr = loadStore( ValueType.i64, true, op - 30, codePos );
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addLoadStoreInstruction( ValueType.i64, true, op - 30, codePos );
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break;
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case 34: // fload_0
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case 35: // fload_1
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case 36: // fload_2
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case 37: // fload_3
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instr = loadStore( ValueType.f32, true, op - 34, codePos );
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addLoadStoreInstruction( ValueType.f32, true, op - 34, codePos );
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break;
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case 38: // dload_0
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case 39: // dload_1
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case 40: // dload_2
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case 41: // dload_3
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instr = loadStore( ValueType.f64, true, op - 38, codePos );
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addLoadStoreInstruction( ValueType.f64, true, op - 38, codePos );
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break;
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//TODO case 42: //aload_0
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//TODO case 43: //aload_1
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@ -192,47 +169,47 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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//TODO case 52: // caload
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//TODO case 53: // saload
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case 54: // istore
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instr = loadStore( ValueType.i32, false, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.i32, false, byteCode.readUnsignedByte(), codePos );
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break;
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case 55: // lstore
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instr = loadStore( ValueType.i64, false, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.i64, false, byteCode.readUnsignedByte(), codePos );
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break;
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case 56: // fstore
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instr = loadStore( ValueType.f32, false, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.f32, false, byteCode.readUnsignedByte(), codePos );
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break;
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case 57: // dstore
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instr = loadStore( ValueType.f64, false, byteCode.readUnsignedByte(), codePos );
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addLoadStoreInstruction( ValueType.f64, false, byteCode.readUnsignedByte(), codePos );
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break;
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//TODO case 58: // astore
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case 59: // istore_0
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case 60: // istore_1
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case 61: // istore_2
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case 62: // istore_3
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instr = loadStore( ValueType.i32, false, op - 59, codePos );
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addLoadStoreInstruction( ValueType.i32, false, op - 59, codePos );
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break;
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case 63: // lstore_0
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case 64: // lstore_1
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case 65: // lstore_2
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case 66: // lstore_3
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instr = loadStore( ValueType.i64, false, op - 63, codePos );
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addLoadStoreInstruction( ValueType.i64, false, op - 63, codePos );
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break;
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case 67: // fstore_0
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case 68: // fstore_1
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case 69: // fstore_2
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case 70: // fstore_3
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instr = loadStore( ValueType.f32, false, op - 67, codePos );
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addLoadStoreInstruction( ValueType.f32, false, op - 67, codePos );
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break;
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case 71: // dstore_0
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case 72: // dstore_1
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case 73: // dstore_2
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case 74: // dstore_3
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instr = loadStore( ValueType.f64, false, op - 71, codePos );
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addLoadStoreInstruction( ValueType.f64, false, op - 71, codePos );
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break;
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case 75: // astore_0
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case 76: // astore_1
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case 77: // astore_2
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case 78: // astore_3
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instr = loadStore( ValueType.anyref, false, op - 75, codePos );
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addLoadStoreInstruction( ValueType.anyref, false, op - 75, codePos );
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break;
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//TODO case 79: // iastore
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//TODO case 80: // lastore
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@ -244,7 +221,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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//TODO case 86: // sastore
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case 87: // pop
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case 88: // pop2
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instr = new WasmBlockInstruction( WasmBlockOperator.DROP, null, codePos );
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addBlockInstruction( WasmBlockOperator.DROP, null, codePos );
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break;
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case 89: // dup: duplicate the value on top of the stack
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case 90: // dup_x1
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@ -256,168 +233,168 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
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// can be do with functions with more as one return value in future WASM standard
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throw new WasmException( "Stack duplicate is not supported in current WASM. try to save immediate values in a local variable: " + op, byteCode.getLineNumber() );
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case 96: // iadd
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instr = new WasmNumericInstruction( NumericOperator.add, ValueType.i32, codePos);
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addNumericInstruction( NumericOperator.add, ValueType.i32, codePos);
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break;
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case 97: // ladd
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instr = new WasmNumericInstruction( NumericOperator.add, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.add, ValueType.i64, codePos );
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break;
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case 98: // fadd
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instr = new WasmNumericInstruction( NumericOperator.add, ValueType.f32, codePos );
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addNumericInstruction( NumericOperator.add, ValueType.f32, codePos );
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break;
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case 99: // dadd
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instr = new WasmNumericInstruction( NumericOperator.add, ValueType.f64, codePos );
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addNumericInstruction( NumericOperator.add, ValueType.f64, codePos );
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break;
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case 100: // isub
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instr = new WasmNumericInstruction( NumericOperator.sub, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.sub, ValueType.i32, codePos );
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break;
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case 101: // lsub
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instr = new WasmNumericInstruction( NumericOperator.sub, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.sub, ValueType.i64, codePos );
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break;
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case 102: // fsub
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instr = new WasmNumericInstruction( NumericOperator.sub, ValueType.f32, codePos );
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addNumericInstruction( NumericOperator.sub, ValueType.f32, codePos );
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break;
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case 103: // dsub
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instr = new WasmNumericInstruction( NumericOperator.sub, ValueType.f64, codePos );
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addNumericInstruction( NumericOperator.sub, ValueType.f64, codePos );
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break;
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case 104: // imul;
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instr = new WasmNumericInstruction( NumericOperator.mul, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.mul, ValueType.i32, codePos );
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break;
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case 105: // lmul
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instr = new WasmNumericInstruction( NumericOperator.mul, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.mul, ValueType.i64, codePos );
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break;
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case 106: // fmul
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instr = new WasmNumericInstruction( NumericOperator.mul, ValueType.f32, codePos );
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addNumericInstruction( NumericOperator.mul, ValueType.f32, codePos );
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break;
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case 107: // dmul
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instr = new WasmNumericInstruction( NumericOperator.mul, ValueType.f64, codePos );
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addNumericInstruction( NumericOperator.mul, ValueType.f64, codePos );
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break;
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case 108: // idiv
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instr = new WasmNumericInstruction( NumericOperator.div, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.div, ValueType.i32, codePos );
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break;
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case 109: // ldiv
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instr = new WasmNumericInstruction( NumericOperator.div, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.div, ValueType.i64, codePos );
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break;
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case 110: // fdiv
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instr = new WasmNumericInstruction( NumericOperator.div, ValueType.f32, codePos );
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addNumericInstruction( NumericOperator.div, ValueType.f32, codePos );
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break;
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case 111: // ddiv
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instr = new WasmNumericInstruction( NumericOperator.div, ValueType.f64, codePos );
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addNumericInstruction( NumericOperator.div, ValueType.f64, codePos );
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break;
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case 112: // irem
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instr = new WasmNumericInstruction( NumericOperator.rem, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.rem, ValueType.i32, codePos );
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break;
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case 113: // lrem
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instr = new WasmNumericInstruction( NumericOperator.rem, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.rem, ValueType.i64, codePos );
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break;
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case 114: // frem
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case 115: // drem
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//TODO can be implemented with a helper function like: (a - (long)(a / b) * (double)b)
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throw new WasmException( "Modulo/Remainder for floating numbers is not supported in WASM. Use int or long data types." + op, byteCode.getLineNumber() );
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case 116: // ineg
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instructions.add( new WasmConstInstruction( -1, ValueType.i32, codePos ) );
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instr = new WasmNumericInstruction( NumericOperator.mul, ValueType.i32, codePos );
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addConstInstruction( -1, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.mul, ValueType.i32, codePos );
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break;
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case 117: // lneg
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instructions.add( new WasmConstInstruction( (long)-1, ValueType.i64, codePos ) ) ;
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instr = new WasmNumericInstruction( NumericOperator.mul, ValueType.i64, codePos );
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addConstInstruction( (long)-1, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.mul, ValueType.i64, codePos );
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break;
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case 118: // fneg
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instr = new WasmNumericInstruction( NumericOperator.neg, ValueType.f32, codePos );
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addNumericInstruction( NumericOperator.neg, ValueType.f32, codePos );
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break;
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case 119: // dneg
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instr = new WasmNumericInstruction( NumericOperator.neg, ValueType.f64, codePos );
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addNumericInstruction( NumericOperator.neg, ValueType.f64, codePos );
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break;
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case 120: // ishl
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instr = new WasmNumericInstruction( NumericOperator.shl, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.shl, ValueType.i32, codePos );
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break;
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case 121: // lshl
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instructions.add( new WasmConvertInstruction( ValueTypeConvertion.i2l, codePos ) ); // the shift parameter must be of type long!!!
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instr = new WasmNumericInstruction( NumericOperator.shl, ValueType.i64, codePos );
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addConvertInstruction( ValueTypeConvertion.i2l, codePos ); // the shift parameter must be of type long!!!
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addNumericInstruction( NumericOperator.shl, ValueType.i64, codePos );
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break;
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case 122: // ishr
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instr = new WasmNumericInstruction( NumericOperator.shr_s, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.shr_s, ValueType.i32, codePos );
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break;
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case 123: // lshr
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instructions.add( new WasmConvertInstruction( ValueTypeConvertion.i2l, codePos ) ); // the shift parameter must be of type long!!!
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instr = new WasmNumericInstruction( NumericOperator.shr_s, ValueType.i64, codePos );
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addConvertInstruction( ValueTypeConvertion.i2l, codePos ); // the shift parameter must be of type long!!!
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addNumericInstruction( NumericOperator.shr_s, ValueType.i64, codePos );
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break;
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case 124: // iushr
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instr = new WasmNumericInstruction( NumericOperator.shr_u, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.shr_u, ValueType.i32, codePos );
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break;
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case 125: // lushr
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instructions.add( new WasmConvertInstruction( ValueTypeConvertion.i2l, codePos ) ); // the shift parameter must be of type long!!!
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instr = new WasmNumericInstruction( NumericOperator.shr_u, ValueType.i64, codePos );
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addConvertInstruction( ValueTypeConvertion.i2l, codePos ); // the shift parameter must be of type long!!!
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addNumericInstruction( NumericOperator.shr_u, ValueType.i64, codePos );
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break;
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case 126: // iand
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instr = new WasmNumericInstruction( NumericOperator.and, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.and, ValueType.i32, codePos );
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break;
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case 127: // land
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instr = new WasmNumericInstruction( NumericOperator.and, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.and, ValueType.i64, codePos );
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break;
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case 128: // ior
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instr = new WasmNumericInstruction( NumericOperator.or, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.or, ValueType.i32, codePos );
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break;
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case 129: // lor
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instr = new WasmNumericInstruction( NumericOperator.or, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.or, ValueType.i64, codePos );
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break;
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case 130: // ixor
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instr = new WasmNumericInstruction( NumericOperator.xor, ValueType.i32, codePos );
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addNumericInstruction( NumericOperator.xor, ValueType.i32, codePos );
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break;
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case 131: // lxor
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instr = new WasmNumericInstruction( NumericOperator.xor, ValueType.i64, codePos );
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addNumericInstruction( NumericOperator.xor, ValueType.i64, codePos );
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break;
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case 132: // iinc
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int idx = byteCode.readUnsignedByte();
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instructions.add( new WasmLoadStoreInstruction( true, idx, localVariables, codePos ) );
|
||||
instructions.add( new WasmConstInstruction( (int)byteCode.readByte(), ValueType.i32, codePos ) );
|
||||
instructions.add( new WasmNumericInstruction( NumericOperator.add, ValueType.i32, codePos) );
|
||||
instr = new WasmLoadStoreInstruction( false, idx, localVariables, codePos );
|
||||
addLoadStoreInstruction( ValueType.i32, true, idx, codePos );
|
||||
addConstInstruction( (int)byteCode.readByte(), ValueType.i32, codePos );
|
||||
addNumericInstruction( NumericOperator.add, ValueType.i32, codePos);
|
||||
addLoadStoreInstruction( ValueType.i32, false, idx, codePos );
|
||||
break;
|
||||
case 133: // i2l
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.i2l, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.i2l, codePos );
|
||||
break;
|
||||
case 134: // i2f
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.i2f, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.i2f, codePos );
|
||||
break;
|
||||
case 135: // i2d
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.i2d, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.i2d, codePos );
|
||||
break;
|
||||
case 136: // l2i
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.l2i, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.l2i, codePos );
|
||||
break;
|
||||
case 137: // l2f
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.l2f, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.l2f, codePos );
|
||||
break;
|
||||
case 138: // l2d
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.l2d, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.l2d, codePos );
|
||||
break;
|
||||
case 139: // f2i
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.f2i, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.f2i, codePos );
|
||||
break;
|
||||
case 140: // f2l
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.f2l, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.f2l, codePos );
|
||||
break;
|
||||
case 141: // f2d
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.f2d, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.f2d, codePos );
|
||||
break;
|
||||
case 142: // d2i
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.d2i, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.d2i, codePos );
|
||||
break;
|
||||
case 143: // d2l
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.d2l, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.d2l, codePos );
|
||||
break;
|
||||
case 144: // d2f
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.d2f, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.d2f, codePos );
|
||||
break;
|
||||
case 145: // i2b
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.i2b, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.i2b, codePos );
|
||||
break;
|
||||
case 146: // i2c
|
||||
instructions.add( new WasmConstInstruction( 0xFFFF, ValueType.i32, codePos ) );
|
||||
instr = new WasmNumericInstruction( NumericOperator.and, ValueType.i32, codePos );
|
||||
addConstInstruction( 0xFFFF, ValueType.i32, codePos );
|
||||
addNumericInstruction( NumericOperator.and, ValueType.i32, codePos );
|
||||
break;
|
||||
case 147: // i2s
|
||||
instr = new WasmConvertInstruction( ValueTypeConvertion.i2s, codePos );
|
||||
addConvertInstruction( ValueTypeConvertion.i2s, codePos );
|
||||
break;
|
||||
case 148: // lcmp
|
||||
opCompare( ValueType.i64, byteCode, codePos );
|
||||
@ -471,7 +448,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
case 167: // goto
|
||||
int offset = byteCode.readShort();
|
||||
branchManager.addGotoOperator( codePos, offset, byteCode.getLineNumber() );
|
||||
instr = new WasmNopInstruction( codePos ); // marker of the line number for the branch manager
|
||||
addNopInstruction( codePos ); // marker of the line number for the branch manager
|
||||
break;
|
||||
//TODO case 168: // jsr
|
||||
//TODO case 169: // ret
|
||||
@ -503,16 +480,16 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
type = ValueType.anyref;
|
||||
break;
|
||||
}
|
||||
instr = new WasmBlockInstruction( WasmBlockOperator.RETURN, type, codePos );
|
||||
addBlockInstruction( WasmBlockOperator.RETURN, type, codePos );
|
||||
endWithReturn = true;
|
||||
break;
|
||||
case 178: // getstatic
|
||||
ConstantRef ref = (ConstantRef)constantPool.get( byteCode.readUnsignedShort() );
|
||||
instr = new WasmGlobalInstruction( true, ref, codePos );
|
||||
addGlobalInstruction( true, ref, codePos );
|
||||
break;
|
||||
case 179: // putstatic
|
||||
ref = (ConstantRef)constantPool.get( byteCode.readUnsignedShort() );
|
||||
instr = new WasmGlobalInstruction( false, ref, codePos );
|
||||
addGlobalInstruction( false, ref, codePos );
|
||||
break;
|
||||
//TODO case 180: // getfield
|
||||
//TODO case 181: // putfield
|
||||
@ -521,7 +498,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
case 184: // invokestatic
|
||||
idx = byteCode.readUnsignedShort();
|
||||
ref = (ConstantRef)constantPool.get( idx );
|
||||
instr = new WasmCallInstruction( ref, codePos );
|
||||
addCallInstruction( ref, codePos );
|
||||
break;
|
||||
//TODO case 185: // invokeinterface
|
||||
//TODO case 186: // invokedynamic
|
||||
@ -543,9 +520,6 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
default:
|
||||
throw new WasmException( "Unimplemented Java byte code operation: " + op, byteCode.getLineNumber() );
|
||||
}
|
||||
if( instr != null ) {
|
||||
instructions.add( instr );
|
||||
}
|
||||
}
|
||||
branchManager.calculate();
|
||||
branchManager.handle( byteCode ); // add branch operations
|
||||
@ -553,7 +527,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
// if a method ends with a loop without a break then code after the loop is no reachable
|
||||
// Java does not need a return byte code in this case
|
||||
// But WebAssembly need the dead code to validate
|
||||
instructions.add( new WasmBlockInstruction( WasmBlockOperator.UNREACHABLE, null, byteCode.getCodePosition() ) );
|
||||
addBlockInstruction( WasmBlockOperator.UNREACHABLE, null, byteCode.getCodePosition() );
|
||||
}
|
||||
} catch( WasmException ex ) {
|
||||
throw ex;
|
||||
@ -594,11 +568,11 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
keys[i] = byteCode.readInt();
|
||||
positions[i] = startPosition + byteCode.readInt();
|
||||
}
|
||||
int tempI32 = localVariables.getTempI32();
|
||||
int tempI32 = -1;
|
||||
int block = 0;
|
||||
int defaultBlock = -1;
|
||||
int currentPos = -1;
|
||||
instructions.add( new WasmLoadStoreInstruction( false, tempI32, localVariables, codePos ) );
|
||||
addLoadStoreInstruction( ValueType.i32, false, tempI32, codePos );
|
||||
do {
|
||||
int nextPos = findNext( currentPos, positions );
|
||||
if( nextPos == currentPos ) {
|
||||
@ -615,10 +589,10 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
}
|
||||
for( int i = 0; i < positions.length; i++ ) {
|
||||
if( positions[i] == currentPos ) {
|
||||
instructions.add( new WasmLoadStoreInstruction( true, tempI32, localVariables, codePos ) );
|
||||
instructions.add( new WasmConstInstruction( keys[i], ValueType.i32, codePos ) );
|
||||
instructions.add( new WasmNumericInstruction( NumericOperator.eq, ValueType.i32, codePos ) );
|
||||
instructions.add( new WasmBlockInstruction( WasmBlockOperator.BR_IF, block, codePos ) );
|
||||
addLoadStoreInstruction( ValueType.i32, true, tempI32, codePos );
|
||||
addConstInstruction( keys[i], ValueType.i32, codePos );
|
||||
addNumericInstruction( NumericOperator.eq, ValueType.i32, codePos );
|
||||
addBlockInstruction( WasmBlockOperator.BR_IF, block, codePos );
|
||||
}
|
||||
}
|
||||
block++;
|
||||
@ -626,7 +600,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
if( defaultBlock < 0 ) {
|
||||
defaultBlock = block;
|
||||
}
|
||||
instructions.add( new WasmBlockInstruction( WasmBlockOperator.BR, defaultBlock, codePos ) );
|
||||
addBlockInstruction( WasmBlockOperator.BR, defaultBlock, codePos );
|
||||
} else {
|
||||
int low = byteCode.readInt();
|
||||
keys = null;
|
||||
@ -636,8 +610,8 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
positions[i] = startPosition + byteCode.readInt();
|
||||
}
|
||||
if( low != 0 ) { // the br_table starts ever with the value 0. That we need to subtract the start value if it different
|
||||
instructions.add( new WasmConstInstruction( low, ValueType.i32, codePos ) );
|
||||
instructions.add( new WasmNumericInstruction( NumericOperator.sub, ValueType.i32, codePos ) );
|
||||
addConstInstruction( low, ValueType.i32, codePos );
|
||||
addNumericInstruction( NumericOperator.sub, ValueType.i32, codePos );
|
||||
}
|
||||
}
|
||||
branchManager.addSwitchOperator( switchValuestartPosition, 0, lineNumber, keys, positions, defaultPosition );
|
||||
@ -651,6 +625,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
*/
|
||||
private int findPreviousPushCodePosition() {
|
||||
int valueCount = 0;
|
||||
List<WasmInstruction> instructions = getInstructions();
|
||||
for( int i = instructions.size() - 1; i >= 0; i-- ) {
|
||||
WasmInstruction instr = instructions.get( i );
|
||||
ValueType valueType = instr.getPushValueType();
|
||||
@ -686,25 +661,6 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
return find ? next : current;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a WasmLoadStoreInstruction.
|
||||
*
|
||||
* @param valueType
|
||||
* the value type
|
||||
* @param load
|
||||
* true: if load
|
||||
* @param idx
|
||||
* the memory/slot idx of the variable
|
||||
* @param codePos
|
||||
* the code position/offset in the Java method
|
||||
* @return the WasmLoadStoreInstruction
|
||||
*/
|
||||
@Nonnull
|
||||
private WasmLoadStoreInstruction loadStore( ValueType valueType, boolean load, @Nonnegative int idx, int codePos ) {
|
||||
localVariables.use( valueType, idx );
|
||||
return new WasmLoadStoreInstruction( load, idx, localVariables, codePos );
|
||||
}
|
||||
|
||||
/**
|
||||
* Handle the if<condition> of the Java byte code. This Java instruction compare the first stack value with value 0.
|
||||
* Important: In the Java IF expression the condition for the jump to the else block is saved. In WebAssembler we
|
||||
@ -720,7 +676,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
* if any I/O errors occur.
|
||||
*/
|
||||
private void opIfCondition( NumericOperator compareOp, CodeInputStream byteCode, int codePos ) throws IOException {
|
||||
instructions.add( new WasmConstInstruction( 0, ValueType.i32, codePos ) );
|
||||
addConstInstruction( 0, ValueType.i32, codePos );
|
||||
opIfCompareCondition( compareOp, byteCode, codePos );
|
||||
}
|
||||
|
||||
@ -742,7 +698,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
int offset = byteCode.readShort();
|
||||
WasmNumericInstruction compare = new WasmNumericInstruction( compareOp, ValueType.i32, codePos );
|
||||
branchManager.addIfOperator( codePos, offset, byteCode.getLineNumber(), compare );
|
||||
instructions.add( compare );
|
||||
getInstructions().add( compare );
|
||||
}
|
||||
|
||||
/**
|
||||
@ -787,7 +743,7 @@ class JavaMethodWasmCodeBuilder extends WasmCodeBuilder {
|
||||
int offset = byteCode.readShort();
|
||||
WasmNumericInstruction compare = new WasmNumericInstruction( numOp, valueType, codePos );
|
||||
branchManager.addIfOperator( codePos, offset, byteCode.getLineNumber(), compare );
|
||||
instructions.add( compare );
|
||||
getInstructions().add( compare );
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -73,6 +73,10 @@ class LocaleVariableManager {
|
||||
* the memory/slot index of the local variable
|
||||
*/
|
||||
void use( ValueType valueType, int slot ) {
|
||||
if( slot < 0 ) {
|
||||
needTempI32 = true;
|
||||
return;
|
||||
}
|
||||
ensureCapacity( slot );
|
||||
size = Math.max( size, slot + 1 );
|
||||
LocaleVariable var = variables[slot];
|
||||
|
||||
@ -15,8 +15,15 @@
|
||||
*/
|
||||
package de.inetsoftware.jwebassembly.module;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
import javax.annotation.Nonnegative;
|
||||
import javax.annotation.Nonnull;
|
||||
import javax.annotation.Nullable;
|
||||
|
||||
import de.inetsoftware.classparser.ConstantRef;
|
||||
|
||||
/**
|
||||
* Base class for Code Building.
|
||||
*
|
||||
@ -24,12 +31,18 @@ import java.util.List;
|
||||
*/
|
||||
public abstract class WasmCodeBuilder {
|
||||
|
||||
private final LocaleVariableManager localVariables = new LocaleVariableManager();
|
||||
|
||||
private final List<WasmInstruction> instructions = new ArrayList<>();
|
||||
|
||||
/**
|
||||
* Get the list of instructions
|
||||
*
|
||||
* @return the list
|
||||
*/
|
||||
abstract List<WasmInstruction> getInstructions();
|
||||
List<WasmInstruction> getInstructions() {
|
||||
return instructions;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the data types of the local variables. The value is only valid until the next call.
|
||||
@ -38,6 +51,143 @@ public abstract class WasmCodeBuilder {
|
||||
* the count of method parameter which should be exclude
|
||||
* @return the reused list with fresh values
|
||||
*/
|
||||
abstract List<ValueType> getLocalTypes( int paramCount );
|
||||
List<ValueType> getLocalTypes( int paramCount ) {
|
||||
return localVariables.getLocalTypes( paramCount );
|
||||
}
|
||||
|
||||
/**
|
||||
* Reset the code builder.
|
||||
*/
|
||||
protected void reset() {
|
||||
instructions.clear();
|
||||
localVariables.reset();
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculate the index of the variables
|
||||
*/
|
||||
protected void calculateVariables() {
|
||||
localVariables.calculate();
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a WasmLoadStoreInstruction.
|
||||
*
|
||||
* @param valueType
|
||||
* the value type
|
||||
* @param load
|
||||
* true: if load
|
||||
* @param idx
|
||||
* the memory/slot idx of the variable
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
@Nonnull
|
||||
protected void addLoadStoreInstruction( ValueType valueType, boolean load, @Nonnegative int idx, int javaCodePos ) {
|
||||
localVariables.use( valueType, idx );
|
||||
instructions.add( new WasmLoadStoreInstruction( load, idx, localVariables, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a global instruction
|
||||
*
|
||||
* @param load
|
||||
* true: if load
|
||||
* @param ref
|
||||
* reference to a static field
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
protected void addGlobalInstruction( boolean load, ConstantRef ref, int javaCodePos ) {
|
||||
instructions.add( new WasmGlobalInstruction( load, ref, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a constant instruction.
|
||||
*
|
||||
* @param value
|
||||
* the value
|
||||
* @param valueType
|
||||
* the value type
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
protected void addConstInstruction( Number value, ValueType valueType, int javaCodePos ) {
|
||||
instructions.add( new WasmConstInstruction( value, valueType, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a constant instruction with unknown value type.
|
||||
*
|
||||
* @param value
|
||||
* the value
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
protected void addConstInstruction( Number value, int javaCodePos ) {
|
||||
instructions.add( new WasmConstInstruction( value, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a numeric operation instruction
|
||||
*
|
||||
* @param numOp
|
||||
* the operation
|
||||
* @param valueType
|
||||
* the value type
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
protected void addNumericInstruction( @Nullable NumericOperator numOp, @Nullable ValueType valueType, int javaCodePos ) {
|
||||
instructions.add( new WasmNumericInstruction( numOp, valueType, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a value convert/cast instruction.
|
||||
*
|
||||
* @param conversion
|
||||
* the conversion
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
protected void addConvertInstruction( ValueTypeConvertion conversion, int javaCodePos ) {
|
||||
instructions.add( new WasmConvertInstruction( conversion, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a static function call.
|
||||
*
|
||||
* @param method
|
||||
* reference to a static method
|
||||
* @param javaCodePos
|
||||
* the code position/offset in the Java method
|
||||
*/
|
||||
protected void addCallInstruction( ConstantRef method, int javaCodePos ) {
|
||||
instructions.add( new WasmCallInstruction( method, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* 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
|
||||
*/
|
||||
protected void addBlockInstruction( WasmBlockOperator op, @Nullable Object data, int javaCodePos ) {
|
||||
instructions.add( new WasmBlockInstruction( op, data, javaCodePos ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* 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
|
||||
*/
|
||||
protected void addNopInstruction( int javaCodePos ) {
|
||||
instructions.add( new WasmNopInstruction( javaCodePos ) );
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user