1 files changed, 126 insertions, 0 deletions
diff --git a/js/src/jit-test/lib/asm.js b/js/src/jit-test/lib/asm.js
new file mode 100644
index 0000000000..5a9606a8f1
--- /dev/null
+++ b/js/src/jit-test/lib/asm.js
@@ -0,0 +1,126 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+load(libdir + "asserts.js");
+
+const USE_ASM = '"use asm";';
+const HEAP_IMPORTS = "const i8=new glob.Int8Array(b);var u8=new glob.Uint8Array(b);"+
+                     "const i16=new glob.Int16Array(b);var u16=new glob.Uint16Array(b);"+
+                     "const i32=new glob.Int32Array(b);var u32=new glob.Uint32Array(b);"+
+                     "const f32=new glob.Float32Array(b);var f64=new glob.Float64Array(b);";
+const BUF_MIN = 64 * 1024;
+const BUF_CHANGE_MIN = 16 * 1024 * 1024;
+const BUF_64KB = new ArrayBuffer(BUF_MIN);
+
+function asmCompile()
+{
+    var f = Function.apply(null, arguments);
+    assertEq(!isAsmJSCompilationAvailable() || isAsmJSModule(f), true);
+    return f;
+}
+
+function asmCompileCached()
+{
+    if (!isAsmJSCompilationAvailable())
+        return Function.apply(null, arguments);
+
+    var f = Function.apply(null, arguments);
+    assertEq(isAsmJSModule(f), true);
+    return f;
+}
+
+function assertAsmDirectiveFail(str)
+{
+    if (!isAsmJSCompilationAvailable())
+        return;
+
+    assertWarning(() => {
+        eval(str)
+    }, /meaningful in the Directive Prologue/);
+}
+
+function assertAsmTypeFail()
+{
+    if (!isAsmJSCompilationAvailable())
+        return;
+
+    // Verify no error is thrown with warnings off
+    Function.apply(null, arguments);
+
+    // Turn on throwing on validation errors
+    var oldOpts = options("throw_on_asmjs_validation_failure");
+    assertEq(oldOpts.indexOf("throw_on_asmjs_validation_failure"), -1);
+
+    var caught = false;
+    try {
+        Function.apply(null, arguments);
+    } catch (e) {
+        if (!e.message.includes("asm.js type error:"))
+            throw new Error("Didn't catch the expected type failure error; instead caught: " + e + "\nStack: " + new Error().stack);
+        caught = true;
+    }
+    if (!caught)
+        throw new Error("Didn't catch the type failure error");
+
+    // Turn warnings-as-errors back off
+    options("throw_on_asmjs_validation_failure");
+}
+
+function assertAsmLinkFail(f, ...args)
+{
+    if (!isAsmJSCompilationAvailable())
+        return;
+
+    assertEq(isAsmJSModule(f), true);
+
+    // Verify no error is thrown with warnings off
+    var ret = f.apply(null, args);
+
+    assertEq(isAsmJSFunction(ret), false);
+    if (typeof ret === 'object') {
+        for (var i in ret) {
+            assertEq(isAsmJSFunction(ret[i]), false);
+        }
+    }
+
+    assertWarning(() => {
+        f.apply(null, args);
+    }, /disabled by linker/);
+}
+
+// Linking should throw an exception even without warnings-as-errors
+function assertAsmLinkAlwaysFail(f, ...args)
+{
+    var caught = false;
+    try {
+        f.apply(null, args);
+    } catch (e) {
+        caught = true;
+    }
+    if (!caught)
+        throw new Error("Didn't catch the link failure error");
+}
+
+function assertAsmLinkDeprecated(f, ...args)
+{
+    if (!isAsmJSCompilationAvailable())
+        return;
+
+    assertWarning(() => {
+        f.apply(null, args);
+    }, /asm.js type error:/)
+}
+
+function asmLink(f, ...args)
+{
+    if (!isAsmJSCompilationAvailable())
+        return f.apply(null, args);
+
+    var ret;
+    assertNoWarning(() => {
+        ret = f.apply(null, args);
+    }, "No warning for asmLink")
+
+    return ret;
+}