a345a442d3
- Add d8.file.read() and d8.file.execute() helpers - Change tools and tests to use new d8.file helper - Unify error throwing in v8::Shell::ReadFile Change-Id: I5ef4cb27f217508a367106f01e872a4059d5e399 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2928505 Commit-Queue: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#74883}
48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
// Copyright 2019 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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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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(function() {
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function repeat(value, length) {
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var arr = new Array(length);
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for (let i = 0; i < length; i++) {
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arr[i] = value;
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}
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return arr;
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}
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function br_table(block_index, length, def_block) {
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const bytes = new Binary();
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bytes.emit_bytes([kExprBrTable]);
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// Functions count (different than the count in the functions section.
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bytes.emit_u32v(length);
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bytes.emit_bytes(repeat(block_index, length));
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bytes.emit_bytes([def_block]);
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return Array.from(bytes.trunc_buffer());
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}
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var builder = new WasmModuleBuilder();
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builder.addMemory(12, 12, false);
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builder.addFunction("foo", kSig_v_iii)
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.addBody([].concat([
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kExprBlock, kWasmVoid,
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kExprLocalGet, 0x2,
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kExprI32Const, 0x01,
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kExprI32And,
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// Generate a test branch (which has 32k limited reach).
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kExprIf, kWasmVoid,
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kExprLocalGet, 0x0,
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kExprI32Const, 0x01,
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kExprI32And,
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kExprBrIf, 0x1,
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kExprLocalGet, 0x0,
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// Emit a br_table that is long enough to make the test branch go out of range.
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], br_table(0x1, 9000, 0x00), [
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kExprEnd,
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kExprEnd,
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])).exportFunc();
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builder.instantiate();
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})();
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