wasm: add disassembler tool as a web application

settings.gradle.kts

@@ -50,6 +50,7 @@ include("tools:idea")
 include("tools:maven:plugin")
 include("tools:maven:webapp")
 include("tools:classlib-comparison-gen")
+include("tools:wasm-disassembly")
 include("tests")
 include("extras-slf4j")
 

tests/src/test/java/org/teavm/jso/core/test/JSSymbolTest.java

@@ -26,11 +26,14 @@ import org.teavm.jso.core.JSObjects;
 import org.teavm.jso.core.JSString;
 import org.teavm.jso.core.JSSymbol;
 import org.teavm.jso.core.JSUndefined;
+import org.teavm.junit.OnlyPlatform;
 import org.teavm.junit.SkipJVM;
 import org.teavm.junit.TeaVMTestRunner;
+import org.teavm.junit.TestPlatform;
 
 @RunWith(TeaVMTestRunner.class)
 @SkipJVM
+@OnlyPlatform({ TestPlatform.JAVASCRIPT, TestPlatform.WEBASSEMBLY_GC })
 public class JSSymbolTest {
     @Test
     public void getWorks() {

tools/wasm-disassembly/build.gradle.kts

@@ -0,0 +1,70 @@
+/*
+ *  Copyright 2024 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+plugins {
+    `java-library`
+}
+
+configurations {
+    val teavmCompile = create("teavmCompile")
+    compileClasspath.configure {
+        extendsFrom(teavmCompile)
+    }
+    create("wasm")
+}
+
+dependencies {
+    compileOnly(project(":jso:apis"))
+    "teavmCompile"(project(":classlib"))
+    "teavmCompile"(project(":tools:core"))
+}
+
+val generateWasm by tasks.register<JavaExec>("generateWasm") {
+    outputs.dir(layout.buildDirectory.dir("webapp-out"))
+    dependsOn(tasks.classes)
+    classpath += configurations["teavmCompile"]
+    classpath += java.sourceSets.main.get().output.classesDirs
+    mainClass = "org.teavm.tooling.wasm.disassembly.Compiler"
+    args(
+        "org.teavm.tooling.wasm.disassembly.DisassemblerTool",
+        layout.buildDirectory.dir("webapp-out").get().asFile.absolutePath,
+        "disassembler.wasm"
+    )
+}
+
+val copyHtml by tasks.register<Copy>("copyHtml") {
+    outputs.dir(layout.buildDirectory.dir("webapp-out"))
+    from(sourceSets.getByName("main").resources.srcDirs)
+    into(layout.buildDirectory.dir("webapp-out"))
+}
+
+val copyRuntime by tasks.register<Copy>("copyRuntime") {
+    outputs.dir(layout.buildDirectory.dir("webapp-out"))
+    dependsOn(configurations["teavmCompile"])
+    from(providers.provider {
+        configurations["teavmCompile"].map { zipTree(it) }
+    })
+    into(layout.buildDirectory.dir("webapp-out"))
+    include("**/wasm-gc-runtime.js")
+    includeEmptyDirs = false
+    eachFile {
+        path = name
+    }
+}
+
+tasks.assemble.configure {
+    dependsOn(copyHtml, generateWasm, copyRuntime)
+}

tools/wasm-disassembly/src/main/java/org.teavm.tooling.wasm.disassembly/Compiler.java

@@ -0,0 +1,47 @@
+/*
+ *  Copyright 2023 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.tooling.wasm.disassembly;
+
+import java.io.File;
+import org.teavm.tooling.ConsoleTeaVMToolLog;
+import org.teavm.tooling.TeaVMProblemRenderer;
+import org.teavm.tooling.TeaVMTargetType;
+import org.teavm.tooling.TeaVMTool;
+import org.teavm.tooling.TeaVMToolException;
+import org.teavm.vm.TeaVMOptimizationLevel;
+
+public final class Compiler {
+    private Compiler() {
+    }
+
+    public static void main(String[] args) throws TeaVMToolException {
+        var tool = new TeaVMTool();
+        var log = new ConsoleTeaVMToolLog(false);
+        tool.setTargetType(TeaVMTargetType.WEBASSEMBLY_GC);
+        tool.setMainClass(args[0]);
+        tool.setTargetDirectory(new File(args[1]));
+        tool.setTargetFileName(args[2]);
+        tool.setObfuscated(true);
+        tool.setOptimizationLevel(TeaVMOptimizationLevel.ADVANCED);
+        tool.setStrict(false);
+
+        tool.generate();
+        TeaVMProblemRenderer.describeProblems(tool.getDependencyInfo().getCallGraph(), tool.getProblemProvider(), log);
+        if (!tool.getProblemProvider().getSevereProblems().isEmpty()) {
+            System.exit(1);
+        }
+    }
+}

tools/wasm-disassembly/src/main/java/org.teavm.tooling.wasm.disassembly/DisassemblerTool.java

@@ -0,0 +1,49 @@
+/*
+ *  Copyright 2024 konsoletyper.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.tooling.wasm.disassembly;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import org.teavm.backend.wasm.disasm.Disassembler;
+import org.teavm.backend.wasm.disasm.DisassemblyHTMLWriter;
+import org.teavm.backend.wasm.disasm.DisassemblyWriter;
+import org.teavm.jso.JSExport;
+
+public class DisassemblerTool {
+    private DisassemblerTool() {
+    }
+
+    @JSExport
+    public static String disassemble(byte[] data) {
+        var out = new StringWriter();
+        var writer = new PrintWriter(out);
+        var htmlWriter = new DisassemblyHTMLWriter(writer) {
+            @Override
+            public DisassemblyWriter prologue() {
+                return this;
+            }
+
+            @Override
+            public DisassemblyWriter epilogue() {
+                return this;
+            }
+        };
+        htmlWriter.setWithAddress(true);
+        var disassembler = new Disassembler(htmlWriter);
+        disassembler.disassemble(data);
+        return out.toString();
+    }
+}

tools/wasm-disassembly/src/main/resources/index.html

@@ -0,0 +1,58 @@
+<!--
+  ~  Copyright 2024 konsoletyper.
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~       http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~  See the License for the specific language governing permissions and
+  ~  limitations under the License.
+  -->
+
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>TeaVM WebAssembly disassembler</title>
+    <style>
+      .disassembly em {
+          color: grey;
+      }
+    </style>
+    <script src="wasm-gc-runtime.js"></script>
+  </head>
+  <body>
+    <p>Please, note that this is not full disassembler, it only supports subset of WebAssembly
+      used by TeaVM.</p>
+    <div>
+      <input type="file" id="file-input">
+    </div>
+    <pre class="disassembly" id="disassembly-output">
+    </pre>
+    <script>
+      async function load() {
+          let fileInput = document.getElementById("file-input");
+          fileInput.disabled = true;
+          let disassemblyOutput = document.getElementById("disassembly-output");
+          let module = await TeaVM.wasmGC.load("disassembler.wasm");
+          let disassemble = module.exports.disassemble;
+          fileInput.disabled = false;
+          fileInput.onchange = () => {
+              fileInput.disabled = true;
+              (async () => {
+                  let file = fileInput.files[0];
+                  let buffer = await file.arrayBuffer();
+                  fileInput.disabled = false;
+                  let array = new Int8Array(buffer);
+                  disassemblyOutput.innerHTML = disassemble(array);
+              })();
+          };
+      }
+      load()
+    </script>
+  </body>
+</html>