2ec2bda84b
Changes:
- Add WasmInitExpr class which knows how to create initializer
expressions as pairs of {type, value}. Also define a default for every
type. Emit such pairs to a byte array with emit_init_expr().
- Add an initializer expression to every global (addGlobal() uses the
default if the argument is absent).
- Introduce wasmI64Const();
- Update tests as needed.
Change-Id: I75ffe96604891506ad78bd3677ce1efe5e0cee07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2851892
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74231}
64 lines
1.9 KiB
JavaScript
64 lines
1.9 KiB
JavaScript
// Copyright 2016 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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// Flags: --expose-wasm
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load("test/mjsunit/wasm/wasm-module-builder.js");
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var debug = false;
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function SimpleDataSegmentTest(offset) {
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print("SimpleDataSegmentTest(" + offset + ")...");
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var builder = new WasmModuleBuilder();
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builder.addMemory(1, 1, false);
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builder.addFunction("load", kSig_i_i)
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.addBody([kExprLocalGet, 0, kExprI32LoadMem, 0, 0])
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.exportAs("load");
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builder.addDataSegment(offset, [9, 9, 9, 9]);
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var buffer = builder.toBuffer(debug);
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var instance = new WebAssembly.Instance(new WebAssembly.Module(buffer));
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for (var i = offset - 20; i < offset + 20; i += 4) {
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if (i < 0) continue;
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var expected = (i == offset) ? 151587081 : 0;
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assertEquals(expected, instance.exports.load(i));
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}
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}
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SimpleDataSegmentTest(0);
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SimpleDataSegmentTest(4);
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SimpleDataSegmentTest(12);
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SimpleDataSegmentTest(1064);
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function GlobalImportedInitTest(pad) {
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print("GlobaleImportedInitTest(" + pad + ")...");
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var builder = new WasmModuleBuilder();
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builder.addMemory(1, 1, false);
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var g = builder.addImportedGlobal("mod", "offset", kWasmI32);
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while (pad-- > 0) builder.addGlobal(kWasmI32, false); // pad
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builder.addFunction("load", kSig_i_i)
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.addBody([kExprLocalGet, 0, kExprI32LoadMem, 0, 0])
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.exportAs("load");
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builder.addDataSegment(g.index, [5, 5, 5, 5], true);
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var buffer = builder.toBuffer(debug);
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var module = new WebAssembly.Module(buffer);
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for (var offset of [0, 12, 192, 1024]) {
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var instance = new WebAssembly.Instance(module, {mod: {offset: offset}});
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for (var i = offset - 20; i < offset + 20; i += 4) {
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if (i < 0) continue;
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var expected = i == offset ? 84215045 : 0;
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assertEquals(expected, instance.exports.load(i));
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}
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}
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}
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GlobalImportedInitTest(0);
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GlobalImportedInitTest(1);
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GlobalImportedInitTest(4);
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