[GR-48908] Implement the Typed Function References proposal in GraalWasm.

wasm/CHANGELOG.md

@@ -5,6 +5,7 @@ This changelog summarizes major changes to the WebAssembly engine implemented in
 ## Version 25.1.0
 
 * Implemented the [exception handling](https://github.com/WebAssembly/exception-handling) proposal. This feature can be enabled with the experimental option `wasm.Exceptions=true`.
+* Implemented the [typed function references](https://github.com/WebAssembly/function-references) proposal. This feature can be enabled with the experimental option `wasm.TypedFunctionReferences=true`.
 
 ## Version 25.0.0
 

wasm/src/org.graalvm.wasm.benchmark/src/org/graalvm/wasm/benchmark/MemoryFootprintBenchmarkRunner.java

@@ -169,7 +169,7 @@ static double getHeapSize() {
 
     static void sleep() {
         try {
-            Thread.sleep(2000);
+            Thread.sleep(5000);
         } catch (InterruptedException e) {
             Thread.currentThread().interrupt();
         }

wasm/src/org.graalvm.wasm.test/src/org/graalvm/wasm/test/AbstractBinarySuite.java

@@ -53,9 +53,10 @@
 import org.graalvm.polyglot.io.ByteSequence;
 import org.graalvm.wasm.WasmLanguage;
 import org.graalvm.wasm.collection.ByteArrayList;
+import org.graalvm.wasm.collection.IntArrayList;
 
 public abstract class AbstractBinarySuite {
-    protected static final byte[] EMPTY_BYTES = {};
+    protected static final int[] EMPTY_INTS = {};
 
     protected static void runRuntimeTest(byte[] binary, Consumer<Context.Builder> options, Consumer<Value> testCase) throws IOException {
         final Context.Builder contextBuilder = Context.newBuilder(WasmLanguage.ID);
@@ -100,10 +101,10 @@ private static byte getByte(String hexString) {
 
     private static final class BinaryTypes {
 
-        private final List<byte[]> paramEntries = new ArrayList<>();
-        private final List<byte[]> resultEntries = new ArrayList<>();
+        private final List<int[]> paramEntries = new ArrayList<>();
+        private final List<int[]> resultEntries = new ArrayList<>();
 
-        private void add(byte[] params, byte[] results) {
+        private void add(int[] params, int[] results) {
             paramEntries.add(params);
             resultEntries.add(results);
         }
@@ -112,18 +113,18 @@ private byte[] generateTypeSection() {
             ByteArrayList b = new ByteArrayList();
             b.add(getByte("01"));
             b.add((byte) 0); // length is patched in the end
-            b.add((byte) paramEntries.size());
+            b.addUnsignedInt32(paramEntries.size());
             for (int i = 0; i < paramEntries.size(); i++) {
                 b.add(getByte("60"));
-                byte[] params = paramEntries.get(i);
-                byte[] results = resultEntries.get(i);
-                b.add((byte) params.length);
-                for (byte param : params) {
-                    b.add(param);
+                int[] params = paramEntries.get(i);
+                int[] results = resultEntries.get(i);
+                b.addUnsignedInt32(params.length);
+                for (int param : params) {
+                    b.addSignedInt32(param);
                 }
-                b.add((byte) results.length);
-                for (byte result : results) {
-                    b.add(result);
+                b.addUnsignedInt32(results.length);
+                for (int result : results) {
+                    b.addSignedInt32(result);
                 }
             }
             b.set(1, (byte) (b.size() - 2));
@@ -132,9 +133,9 @@ private byte[] generateTypeSection() {
     }
 
     private static final class BinaryTables {
-        private final ByteArrayList tables = new ByteArrayList();
+        private final IntArrayList tables = new IntArrayList();
 
-        private void add(byte initSize, byte maxSize, byte elemType) {
+        private void add(int initSize, int maxSize, int elemType) {
             tables.add(initSize);
             tables.add(maxSize);
             tables.add(elemType);
@@ -147,20 +148,20 @@ private byte[] generateTableSection() {
             final int tableCount = tables.size() / 3;
             b.add((byte) tableCount);
             for (int i = 0; i < tables.size(); i += 3) {
-                b.add(tables.get(i + 2));
+                b.addSignedInt32(tables.get(i + 2));
                 b.add(getByte("01"));
-                b.add(tables.get(i));
-                b.add(tables.get(i + 1));
+                b.addUnsignedInt32(tables.get(i));
+                b.addUnsignedInt32(tables.get(i + 1));
             }
             b.set(1, (byte) (b.size() - 2));
             return b.toArray();
         }
     }
 
     private static final class BinaryMemories {
-        private final ByteArrayList memories = new ByteArrayList();
+        private final IntArrayList memories = new IntArrayList();
 
-        private void add(byte initSize, byte maxSize) {
+        private void add(int initSize, int maxSize) {
             memories.add(initSize);
             memories.add(maxSize);
         }
@@ -173,20 +174,20 @@ private byte[] generateMemorySection() {
             b.add((byte) memoryCount);
             for (int i = 0; i < memories.size(); i += 2) {
                 b.add(getByte("01"));
-                b.add(memories.get(i));
-                b.add(memories.get(i + 1));
+                b.addUnsignedInt32(memories.get(i));
+                b.addUnsignedInt32(memories.get(i + 1));
             }
             b.set(1, (byte) (b.size() - 2));
             return b.toArray();
         }
     }
 
     private static final class BinaryFunctions {
-        private final ByteArrayList types = new ByteArrayList();
-        private final List<byte[]> localEntries = new ArrayList<>();
+        private final IntArrayList types = new IntArrayList();
+        private final List<int[]> localEntries = new ArrayList<>();
         private final List<byte[]> codeEntries = new ArrayList<>();
 
-        private void add(byte typeIndex, byte[] locals, byte[] code) {
+        private void add(int typeIndex, int[] locals, byte[] code) {
             types.add(typeIndex);
             localEntries.add(locals);
             codeEntries.add(code);
@@ -197,9 +198,9 @@ private byte[] generateFunctionSection() {
             b.add(getByte("03"));
             b.add((byte) 0); // length is patched at the end
             final int functionCount = types.size();
-            b.add((byte) functionCount);
+            b.addUnsignedInt32(functionCount);
             for (int i = 0; i < functionCount; i++) {
-                b.add(types.get(i));
+                b.addUnsignedInt32(types.get(i));
             }
             b.set(1, (byte) (b.size() - 2));
             return b.toArray();
@@ -210,15 +211,15 @@ private byte[] generateCodeSection() {
             b.add(getByte("0A"));
             b.add((byte) 0); // length is patched at the end
             final int functionCount = types.size();
-            b.add((byte) functionCount);
+            b.addUnsignedInt32(functionCount);
             for (int i = 0; i < functionCount; i++) {
-                byte[] locals = localEntries.get(i);
+                int[] locals = localEntries.get(i);
                 byte[] code = codeEntries.get(i);
                 int length = 1 + locals.length + code.length;
-                b.add((byte) length);
-                b.add((byte) locals.length);
-                for (byte l : locals) {
-                    b.add(l);
+                b.addUnsignedInt32(length);
+                b.addUnsignedInt32(locals.length);
+                for (int l : locals) {
+                    b.addSignedInt32(l);
                 }
                 for (byte op : code) {
                     b.add(op);
@@ -231,10 +232,10 @@ private byte[] generateCodeSection() {
 
     private static final class BinaryExports {
         private final ByteArrayList types = new ByteArrayList();
-        private final ByteArrayList indices = new ByteArrayList();
+        private final IntArrayList indices = new IntArrayList();
         private final List<byte[]> names = new ArrayList<>();
 
-        private void addFunctionExport(byte functionIndex, String name) {
+        private void addFunctionExport(int functionIndex, String name) {
             types.add(getByte("00"));
             indices.add(functionIndex);
             names.add(name.getBytes(StandardCharsets.UTF_8));
@@ -244,15 +245,15 @@ private byte[] generateExportSection() {
             ByteArrayList b = new ByteArrayList();
             b.add(getByte("07"));
             b.add((byte) 0); // length is patched at the end
-            b.add((byte) types.size());
+            b.addUnsignedInt32(types.size());
             for (int i = 0; i < types.size(); i++) {
                 final byte[] name = names.get(i);
-                b.add((byte) name.length);
+                b.addUnsignedInt32(name.length);
                 for (byte value : name) {
                     b.add(value);
                 }
                 b.add(types.get(i));
-                b.add(indices.get(i));
+                b.addUnsignedInt32(indices.get(i));
             }
             b.set(1, (byte) (b.size() - 2));
             return b.toArray();
@@ -313,10 +314,10 @@ private byte[] generateDataSection() {
 
     private static final class BinaryGlobals {
         private final ByteArrayList mutabilities = new ByteArrayList();
-        private final ByteArrayList valueTypes = new ByteArrayList();
+        private final IntArrayList valueTypes = new IntArrayList();
         private final List<byte[]> expressions = new ArrayList<>();
 
-        private void add(byte mutability, byte valueType, byte[] expression) {
+        private void add(byte mutability, int valueType, byte[] expression) {
             mutabilities.add(mutability);
             valueTypes.add(valueType);
             expressions.add(expression);
@@ -328,7 +329,7 @@ private byte[] generateGlobalSection() {
             b.add((byte) 0); // length is patched at the end
             b.add((byte) mutabilities.size());
             for (int i = 0; i < mutabilities.size(); i++) {
-                b.add(valueTypes.get(i));
+                b.addSignedInt32(valueTypes.get(i));
                 b.add(mutabilities.get(i));
                 for (byte e : expressions.get(i)) {
                     b.add(e);
@@ -378,8 +379,8 @@ private byte[] generateCustomSections() {
                 final byte[] name = names.get(i);
                 final byte[] section = sections.get(i);
                 final int size = 1 + name.length + section.length;
-                b.add((byte) size); // length is patched at the end
-                b.add((byte) name.length);
+                b.addUnsignedInt32(size);
+                b.addUnsignedInt32(name.length);
                 b.addRange(name, 0, name.length);
                 b.addRange(section, 0, section.length);
             }
@@ -400,27 +401,27 @@ protected static class BinaryBuilder {
 
         private final BinaryCustomSections binaryCustomSections = new BinaryCustomSections();
 
-        public BinaryBuilder addType(byte[] params, byte[] results) {
+        public BinaryBuilder addType(int[] params, int[] results) {
             binaryTypes.add(params, results);
             return this;
         }
 
-        public BinaryBuilder addTable(byte initSize, byte maxSize, byte elemType) {
+        public BinaryBuilder addTable(int initSize, int maxSize, int elemType) {
             binaryTables.add(initSize, maxSize, elemType);
             return this;
         }
 
-        public BinaryBuilder addMemory(byte initSize, byte maxSize) {
+        public BinaryBuilder addMemory(int initSize, int maxSize) {
             binaryMemories.add(initSize, maxSize);
             return this;
         }
 
-        public BinaryBuilder addFunction(byte typeIndex, byte[] locals, String hexCode) {
+        public BinaryBuilder addFunction(int typeIndex, int[] locals, String hexCode) {
             binaryFunctions.add(typeIndex, locals, WasmTestUtils.hexStringToByteArray(hexCode));
             return this;
         }
 
-        public BinaryBuilder addFunctionExport(byte functionIndex, String name) {
+        public BinaryBuilder addFunctionExport(int functionIndex, String name) {
             binaryExports.addFunctionExport(functionIndex, name);
             return this;
         }
@@ -435,7 +436,7 @@ public BinaryBuilder addData(String hexCode) {
             return this;
         }
 
-        public BinaryBuilder addGlobal(byte mutability, byte valueType, String hexCode) {
+        public BinaryBuilder addGlobal(byte mutability, int valueType, String hexCode) {
             binaryGlobals.add(mutability, valueType, WasmTestUtils.hexStringToByteArray(hexCode));
             return this;
         }

wasm/src/org.graalvm.wasm.test/src/org/graalvm/wasm/test/WasmJsApiSuite.java

@@ -102,7 +102,7 @@
 public class WasmJsApiSuite {
     private static final String REF_TYPES_OPTION = "wasm.BulkMemoryAndRefTypes";
 
-    private static WasmFunctionInstance createWasmFunctionInstance(WasmContext context, byte[] paramTypes, byte[] resultTypes, RootNode functionRootNode) {
+    private static WasmFunctionInstance createWasmFunctionInstance(WasmContext context, int[] paramTypes, int[] resultTypes, RootNode functionRootNode) {
         WasmModule module = WasmModule.createBuiltin("dummyModule");
         module.allocateFunctionType(paramTypes, resultTypes, context.getContextOptions().supportMultiValue());
         WasmFunction func = module.declareFunction(0);
@@ -111,7 +111,6 @@ private static WasmFunctionInstance createWasmFunctionInstance(WasmContext conte
         // Perform normal linking steps, incl. assignTypeEquivalenceClasses().
         // Functions need to have type equivalence classes assigned for indirect calls.
         moduleInstance.store().linker().tryLink(moduleInstance);
-        assert func.typeEquivalenceClass() >= 0 : "type equivalence class must be assigned";
         return new WasmFunctionInstance(moduleInstance, func, functionRootNode.getCallTarget());
     }
 
@@ -503,7 +502,7 @@ public void testGlobalWriteNull() throws IOException {
     public void testGlobalWriteAnyfuncRefTypesDisabled() throws IOException {
         runTest(WasmJsApiSuite::disableRefTypes, context -> {
             final WebAssembly wasm = new WebAssembly(context);
-            final WasmGlobal global = new WasmGlobal(ValueType.anyfunc, true, WasmConstant.NULL);
+            final WasmGlobal global = WasmGlobal.allocRef(ValueType.anyfunc, true, WasmConstant.NULL);
             try {
                 wasm.globalWrite(global, WasmConstant.NULL);
                 Assert.fail("Should have failed - ref types not enabled");
@@ -517,7 +516,7 @@ public void testGlobalWriteAnyfuncRefTypesDisabled() throws IOException {
     public void testGlobalWriteExternrefRefTypesDisabled() throws IOException {
         runTest(WasmJsApiSuite::disableRefTypes, context -> {
             final WebAssembly wasm = new WebAssembly(context);
-            final WasmGlobal global = new WasmGlobal(ValueType.externref, true, WasmConstant.NULL);
+            final WasmGlobal global = WasmGlobal.allocRef(ValueType.externref, true, WasmConstant.NULL);
             try {
                 wasm.globalWrite(global, WasmConstant.NULL);
                 Assert.fail("Should have failed - ref types not enabled");
@@ -1412,7 +1411,14 @@ public void testFuncTypeMultiValue() throws IOException, InterruptedException {
 
     @Test
     public void testMultiValueReferencePassThrough() throws IOException, InterruptedException {
-        final byte[] source = compileWat("data", """
+        final byte[] source1 = compileWat("data", """
+                        (module
+                        (type (func (result i32)))
+                        (func (export "func") (type 0)
+                        i32.const 42
+                        ))
+                        """);
+        final byte[] source2 = compileWat("data", """
                         (module
                         (type (func (result funcref externref)))
                         (import "m" "f" (func (type 0)))
@@ -1422,16 +1428,17 @@ public void testMultiValueReferencePassThrough() throws IOException, Interrupted
                         """);
         runTest(context -> {
             final WebAssembly wasm = new WebAssembly(context);
-            final var func = new Executable((args) -> 0);
+            final WasmInstance instance1 = moduleInstantiate(wasm, source1, null);
+            final Object func = WebAssembly.instanceExport(instance1, "func");
             final var f = new Executable((args) -> {
                 final Object[] result = new Object[2];
                 result[0] = func;
                 result[1] = "foo";
                 return InteropArray.create(result);
             });
             final Dictionary importObject = Dictionary.create(new Object[]{"m", Dictionary.create(new Object[]{"f", f})});
-            final WasmInstance instance = moduleInstantiate(wasm, source, importObject);
-            final Object main = WebAssembly.instanceExport(instance, "main");
+            final WasmInstance instance2 = moduleInstantiate(wasm, source2, importObject);
+            final Object main = WebAssembly.instanceExport(instance2, "main");
             final InteropLibrary lib = InteropLibrary.getUncached();
             try {
                 Object result = lib.execute(main);