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[EH] Replace event with tag https://github.com/WebAssembly/exception-handling/pull/161

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This commit is contained in:
Volker Berlin 2021-08-29 15:10:05 +02:00
parent 0ef00ba2ab
commit 1bfe16b17b
4 changed files with 14 additions and 14 deletions
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16
src/de/inetsoftware/jwebassembly/binary/BinaryModuleWriter.java
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@ -132,7 +132,7 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
writeSection( SectionType.Function, functions.values() );
writeTableSection();
writeMemorySection();
writeEventSection();
writeTagSection();
writeSection( SectionType.Global, globals.values() );
writeSection( SectionType.Export, exports );
writeStartSection();
@ -238,21 +238,21 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
}
/**
* Write the event section if needed.
* Write the tag section if needed.
*
* @throws IOException
* if any I/O error occur
*/
private void writeEventSection() throws IOException {
private void writeTagSection() throws IOException {
if( exceptionSignatureIndex >= 0 ) {
WasmOutputStream stream = new WasmOutputStream( options );
stream.writeVaruint32( 1 );
// event declaration
stream.writeVaruint32( 0 ); // event type: exception = 0
// tag declaration
stream.writeVaruint32( 0 ); // tag type: exception = 0
stream.writeVaruint32( exceptionSignatureIndex );
wasm.writeSection( SectionType.Event, stream );
wasm.writeSection( SectionType.Tag, stream );
}
}
@ -1351,7 +1351,7 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
case THROW:
if( options.useEH() ) {
codeStream.writeOpCode( THROW );
codeStream.writeVaruint32( 0 ); // event/exception ever 0 because currently there is only one with signature anyref
codeStream.writeVaruint32( 0 ); // tag/exception ever 0 because currently there is only one with signature anyref
} else {
codeStream.writeOpCode( UNREACHABLE );
}
@ -1363,7 +1363,7 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
if( options.useEH() ) {
codeStream.writeOpCode( BR_ON_EXN );
codeStream.writeVaruint32( (Integer)data ); // break depth
codeStream.writeVaruint32( 0 ); // event/exception ever 0 because currently there is only one with signature anyref
codeStream.writeVaruint32( 0 ); // tag/exception ever 0 because currently there is only one with signature anyref
} else {
codeStream.writeOpCode( UNREACHABLE );
}

2
src/de/inetsoftware/jwebassembly/binary/ExternalKind.java
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@ -26,5 +26,5 @@ enum ExternalKind {
Table,
Memory,
Global,
Event,
Tag,
}

2
src/de/inetsoftware/jwebassembly/binary/SectionType.java
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@ -32,5 +32,5 @@ enum SectionType {
Code, // 10 Function bodies (code)
Data, // 11 Data segments
DataCount,//12 Count of data segments https://github.com/WebAssembly/bulk-memory-operations/blob/master/proposals/bulk-memory-operations/Overview.md
Event, // 13 Event declarations, Exceptions
Tag, // 13 Tag declarations, Exceptions
}

8
src/de/inetsoftware/jwebassembly/text/TextModuleWriter.java
View File

@ -277,9 +277,9 @@ public class TextModuleWriter extends ModuleWriter {
inset = 1;
newline( output );
if( options.useGC() ) {
output.append( "(event (param (ref null $java/lang/Throwable)))" );
output.append( "(tag (param (ref null $java/lang/Throwable)))" );
} else {
output.append( "(event (param externref))" );
output.append( "(tag (param externref))" );
}
inset = oldInset;
}
@ -851,13 +851,13 @@ public class TextModuleWriter extends ModuleWriter {
insetAfter++;
break;
case THROW:
name = options.useEH() ? "throw 0" : "unreachable"; // currently there is only one event/exception with externref
name = options.useEH() ? "throw 0" : "unreachable"; // currently there is only one tag/exception with externref
break;
case RETHROW:
name = "rethrow";
break;
case BR_ON_EXN:
name = options.useEH() ? "br_on_exn " + data + " 0" : "unreachable"; // br_on_exn, break depth, event; // currently there is only one event/exception with externref
name = options.useEH() ? "br_on_exn " + data + " 0" : "unreachable"; // br_on_exn, break depth, tag; // currently there is only one tag/exception with externref
break;
case MONITOR_ENTER:
case MONITOR_EXIT: