From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 02:47:55 +0200
Subject: Adding upstream version 124.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 js/src/jit-test/tests/wasm/memory-cloning.js | 103 +++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 js/src/jit-test/tests/wasm/memory-cloning.js

(limited to 'js/src/jit-test/tests/wasm/memory-cloning.js')

diff --git a/js/src/jit-test/tests/wasm/memory-cloning.js b/js/src/jit-test/tests/wasm/memory-cloning.js
new file mode 100644
index 0000000000..12b05e4aab
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/memory-cloning.js
@@ -0,0 +1,103 @@
+// |jit-test| skip-if: !wasmThreadsEnabled()
+
+// Basic structured cloning tests (specific to SpiderMonkey shell)
+
+var memtypes = wasmMemory64Enabled() ? ['i32', 'i64'] : [''];
+
+function makeMemoryDesc(memtype, d) {
+    if (memtype != '') {
+        d.index = memtype;
+    }
+    return d;
+}
+
+function Zero(memtype) {
+    return memtype == 'i64' ? 0n : 0;
+}
+
+// Should *not* be possible to serialize and deserialize memories that are not
+// shared, whether we transfer them or not.
+
+for ( let memtype of memtypes ) {
+    let mem1 = new WebAssembly.Memory(makeMemoryDesc(memtype, {initial: 2, maximum: 4}));
+    assertErrorMessage(() => serialize(mem1),
+		       TypeError,
+		       /unsupported type for structured data/);
+    assertErrorMessage(() => serialize(mem1, [mem1]),
+		       TypeError,
+		       /invalid transferable array for structured clone/);
+}
+
+// Should be possible to serialize and deserialize memories that are shared, and
+// observe shared effects.
+
+for ( let memtype of memtypes ) {
+    let ptrtype = memtype == 'i64' ? memtype : 'i32';
+    let mem1 = new WebAssembly.Memory(makeMemoryDesc(memtype, {initial: 2, maximum: 4, shared: true}));
+    let buf1 = mem1.buffer;
+
+    // Serialization and deserialization of shared memories work:
+
+    let mem2 = deserialize(serialize(mem1, [], {SharedArrayBuffer: 'allow'}), {SharedArrayBuffer: 'allow'});
+    assertEq(mem2 instanceof WebAssembly.Memory, true);
+    let buf2 = mem2.buffer;
+    assertEq(buf2 instanceof SharedArrayBuffer, true);
+
+    assertEq(buf1 !== buf2, true);
+    assertEq(buf1.byteLength, buf2.byteLength);
+    if (memtype != '' && mem2.type) {
+        assertEq(mem2.type().index, memtype);
+    }
+
+    // Effects to one buffer must be reflected in the other:
+
+    let v1 = new Int32Array(buf1);
+    let v2 = new Int32Array(buf2);
+
+    v1[37] = 0x12345678;
+    assertEq(v2[37], 0x12345678);
+
+    // Growth in a memory is reflected in its clone:
+
+    let index = 2*65536 + 200;
+    let access = wasmEvalText(`(module
+				(memory (import "" "memory") ${memtype} 2 4 shared)
+				(func (export "l") (result ${ptrtype})
+				 (${ptrtype}.load (${ptrtype}.const ${index}))))`,
+			      {"": {memory: mem2}}).exports.l;
+
+    // initially mem2 cannot be accessed at index
+    assertErrorMessage(access, WebAssembly.RuntimeError, /out of bounds/);
+
+    // then we grow mem1
+    wasmEvalText(`(module
+		   (memory (import "" "memory") ${memtype} 2 4 shared)
+		   (func (export "g") (drop (memory.grow (${ptrtype}.const 1)))))`,
+		 {"": {memory: mem1}}).exports.g();
+
+    // after growing mem1, mem2 can be accessed at index
+    assertEq(access(), Zero(memtype));
+}
+
+// Should not be possible to transfer a shared memory
+
+for ( let memtype of memtypes ) {
+    let mem1 = new WebAssembly.Memory(makeMemoryDesc(memtype, {initial: 2, maximum: 4, shared: true}));
+    assertErrorMessage(() => serialize(mem1, [mem1]),
+		       TypeError,
+		       /Shared memory objects must not be in the transfer list/);
+
+}
+
+// When serializing and deserializing a SAB extracted from a memory, the length
+// of the SAB should not change even if the memory was grown after serialization
+// and before deserialization.
+
+for ( let memtype of memtypes ) {
+    let mem = new WebAssembly.Memory(makeMemoryDesc(memtype, {initial: 2, maximum: 4, shared: true}));
+    let buf = mem.buffer;
+    let clonedbuf = serialize(buf, [], {SharedArrayBuffer: 'allow'});
+    mem.grow(1);
+    let buf2 = deserialize(clonedbuf, {SharedArrayBuffer: 'allow'});
+    assertEq(buf.byteLength, buf2.byteLength);
+}
-- 
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