42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
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// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
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const builder = new WasmModuleBuilder();
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builder.addMemory(1, 1);
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builder.exportMemoryAs("memory");
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builder.addFunction("store", kSig_v_i).exportFunc().addBody([
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kExprLocalGet, 0,
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kExprI32Const, 3,
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kExprI32Shl,
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kExprI64Const, 42,
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kAtomicPrefix, kExprI64AtomicStore, 3, 0, // alignment, offset
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]);
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builder.addFunction("load", kSig_l_i).exportFunc().addBody([
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kExprLocalGet, 0,
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kExprI32Const, 3,
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kExprI32Shl,
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kAtomicPrefix, kExprI64AtomicLoad, 3, 0, // alignment, offset
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]);
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let instance = builder.instantiate();
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const kStoreIndex = 1;
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instance.exports.store(kStoreIndex);
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let i64 = new DataView(instance.exports.memory.buffer);
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assertEquals(0n, i64.getBigInt64(0, true));
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assertEquals(42n, i64.getBigInt64(kStoreIndex * 8, true));
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const kLoadIndex = 10;
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const kLoadValue = 1234n;
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i64.setBigInt64(kLoadIndex * 8, kLoadValue, true);
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let load = instance.exports.load;
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assertEquals(0n, load(kLoadIndex * 8));
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assertEquals(kLoadValue, load(kLoadIndex));
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