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pass the type to a virtual function call

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This commit is contained in:
Volker Berlin 2019-05-20 21:28:46 +02:00
parent fd43aca97b
commit 625e5fbef7
5 changed files with 18 additions and 10 deletions
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4
src/de/inetsoftware/jwebassembly/binary/BinaryModuleWriter.java
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@ -1001,10 +1001,10 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
* {@inheritDoc}
*/
@Override
protected void writeVirtualFunctionCall( FunctionName name, int virtualFunctionIdx ) throws IOException {
protected void writeVirtualFunctionCall( FunctionName name, AnyType type, int virtualFunctionIdx ) throws IOException {
callIndirect = true;
codeStream.writeOpCode( STRUCT_GET );
codeStream.writeValueType( ValueType.i32 );
codeStream.writeValueType( type );
codeStream.writeVaruint32( 0 ); // vtable is ever on position 0
codeStream.writeOpCode( I32_LOAD );

6
src/de/inetsoftware/jwebassembly/module/ModuleWriter.java
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@ -229,12 +229,14 @@ public abstract class ModuleWriter implements Closeable {
*
* @param name
* the function name
* @param type
* the base type that should be called
* @param virtualFunctionIdx
* the index of the virtual method in the object. If the value < 0 a direct call should be used.
* the index of the virtual method in the object. If the value < 0 a direct call should be used.
* @throws IOException
* if any I/O error occur
*/
protected abstract void writeVirtualFunctionCall( FunctionName name, int virtualFunctionIdx ) throws IOException;
protected abstract void writeVirtualFunctionCall( FunctionName name, AnyType type, int virtualFunctionIdx ) throws IOException;
/**
* Write a block/branch code

11
src/de/inetsoftware/jwebassembly/module/WasmCallIndirectInstruction.java
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@ -20,6 +20,8 @@ import java.io.IOException;
import javax.annotation.Nonnull;
import de.inetsoftware.jwebassembly.module.TypeManager.StructType;
/**
* WasmInstruction for a function call.
*
@ -30,6 +32,8 @@ class WasmCallIndirectInstruction extends WasmCallInstruction {
private int virtualFunctionIdx = -1;
private StructType type;
/**
* Create an instance of a function call instruction
*
@ -40,8 +44,9 @@ class WasmCallIndirectInstruction extends WasmCallInstruction {
* @param lineNumber
* the line number in the Java source code
*/
WasmCallIndirectInstruction( FunctionName name, int javaCodePos, int lineNumber ) {
WasmCallIndirectInstruction( FunctionName name, @Nonnull StructType type, int javaCodePos, int lineNumber ) {
super( name, javaCodePos, lineNumber );
this.type = type;
}
/**
@ -66,10 +71,10 @@ class WasmCallIndirectInstruction extends WasmCallInstruction {
*/
@Override
public void writeTo( @Nonnull ModuleWriter writer ) throws IOException {
if( virtualFunctionIdx < 0 ) {
if( virtualFunctionIdx < 0 || true ) {
super.writeTo( writer );
} else {
writer.writeVirtualFunctionCall( getFunctionName(), virtualFunctionIdx );
writer.writeVirtualFunctionCall( getFunctionName(), type, virtualFunctionIdx );
}
}

3
src/de/inetsoftware/jwebassembly/module/WasmCodeBuilder.java
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@ -284,7 +284,8 @@ public abstract class WasmCodeBuilder {
* the line number in the Java source code
*/
protected void addCallVirtualInstruction( FunctionName name, int javaCodePos, int lineNumber ) {
instructions.add( new WasmCallIndirectInstruction( name, javaCodePos, lineNumber ) );
StructType type = types.valueOf( name.className );
instructions.add( new WasmCallIndirectInstruction( name, type, javaCodePos, lineNumber ) );
}
/**

4
src/de/inetsoftware/jwebassembly/text/TextModuleWriter.java
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@ -529,10 +529,10 @@ public class TextModuleWriter extends ModuleWriter {
* {@inheritDoc}
*/
@Override
protected void writeVirtualFunctionCall( FunctionName name, int virtualFunctionIdx ) throws IOException {
protected void writeVirtualFunctionCall( FunctionName name, AnyType type, int virtualFunctionIdx ) throws IOException {
callIndirect = true;
newline( methodOutput );
methodOutput.append( "struct.get i32 0 ;;vtable" ); // vtable is ever on position 0
methodOutput.append( "struct.get $" ).append( normalizeName( type.toString() ) ).append( " 0 ;;vtable" ); // vtable is ever on position 0
newline( methodOutput );
methodOutput.append( "i32.load offset=" ).append( virtualFunctionIdx * 4 ); // use default alignment
newline( methodOutput );