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Original commit message: [wasm][liftoff] Always zero-extend 32 bit offsets The upper 32 bits of the 64 bit offset register are not guaranteed to be cleared, so a zero-extension is needed. We already do the zero-extension in the case of explicit bounds checking, but this should also be done if the trap handler is enabled. R=clemensb@chromium.org CC=jkummerow@chromium.org Bug: v8:11809 Change-Id: I21e2535c701041d11fa06c176fa683d82db0a3f1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917612 Commit-Queue: Thibaud Michaud <thibaudm@chromium.org> Reviewed-by: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#74881} Refs: v8/v8@2b77ca2 PR-URL: #39337 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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// Copyright 2021 the V8 project authors. All rights reserved. | ||
// Use of this source code is governed by a BSD-style license that can be | ||
// found in the LICENSE file. | ||
// | ||
// Flags: --enable-testing-opcode-in-wasm --nowasm-tier-up --wasm-tier-mask-for-testing=2 | ||
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load("test/mjsunit/wasm/wasm-module-builder.js"); | ||
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var instance = (function () { | ||
var builder = new WasmModuleBuilder(); | ||
builder.addMemory(1, 1, false /* exported */); | ||
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var sig_index = builder.addType(makeSig( | ||
[kWasmI32, kWasmI32, kWasmI32, kWasmI32, kWasmI32, kWasmI32, kWasmI32, | ||
kWasmI32], | ||
[kWasmI32])); | ||
var sig_three = builder.addType(makeSig( | ||
[kWasmI64, kWasmI64, kWasmI64, kWasmI64, kWasmI64, kWasmI64, kWasmI64, | ||
kWasmI64], | ||
[])); | ||
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var zero = builder.addFunction("zero", kSig_i_i); | ||
var one = builder.addFunction("one", sig_index); | ||
var two = builder.addFunction("two", kSig_v_i); | ||
var three = builder.addFunction("three", sig_three).addBody([]); | ||
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zero.addBody([kExprLocalGet, 0, kExprI32LoadMem, 0, 0]); | ||
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one.addBody([ | ||
kExprLocalGet, 7, | ||
kExprCallFunction, zero.index]); | ||
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two.addBody([ | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprI64Const, 0x81, 0x80, 0x80, 0x80, 0x10, | ||
kExprCallFunction, three.index, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprI32Const, 0, | ||
kExprCallFunction, one.index, | ||
kExprDrop, | ||
]).exportFunc(); | ||
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return builder.instantiate({}); | ||
})(); | ||
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instance.exports.two() |