271a7f55cd
- Use ES6 classes and other goodies. - Make some names match design/spec. - Remove obsolete generation of END section. R=bradnelson@chromium.org BUG= Review-Url: https://codereview.chromium.org/2081973003 Cr-Commit-Position: refs/heads/master@{#37155}
79 lines
2.2 KiB
JavaScript
79 lines
2.2 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-constants.js");
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load("test/mjsunit/wasm/wasm-module-builder.js");
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// Collect the Callsite objects instead of just a string:
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Error.prepareStackTrace = function(error, frames) {
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return frames;
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};
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var builder = new WasmModuleBuilder();
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var sig_index = builder.addType(kSig_i_v)
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// Build a function to resemble this code:
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// if (idx < 2) {
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// return load(-2 / idx);
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// } else if (idx == 2) {
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// unreachable;
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// } else {
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// return call_indirect(idx);
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// }
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// There are four different traps which are triggered by different input values:
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// (0) division by zero; (1) mem oob; (2) unreachable; (3) invalid call target
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// Each of them also has a different location where it traps.
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builder.addFunction("main", kSig_i_i)
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.addBody([
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// offset 1
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kExprBlock,
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kExprGetLocal, 0,
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kExprI32Const, 2,
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kExprI32LtU,
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kExprIf,
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// offset 8
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kExprI32Const, 0x7e /* -2 */,
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kExprGetLocal, 0,
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kExprI32DivU,
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// offset 13
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kExprI32LoadMem, 0, 0,
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kExprBr, 1, 1,
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kExprEnd,
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// offset 20
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kExprGetLocal, 0,
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kExprI32Const, 2,
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kExprI32Eq,
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kExprIf,
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kExprUnreachable,
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kExprEnd,
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// offset 28
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kExprGetLocal, 0,
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kExprCallIndirect, kArity0, sig_index,
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kExprEnd,
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])
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.exportAs("main");
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var module = builder.instantiate();
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function testWasmTrap(value, reason, position) {
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try {
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module.exports.main(value);
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fail("expected wasm exception");
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} catch (e) {
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assertEquals(kTrapMsgs[reason], e.message, "trap reason");
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assertEquals(3, e.stack.length, "number of frames");
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assertEquals(0, e.stack[0].getLineNumber(), "wasmFunctionIndex");
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assertEquals(position, e.stack[0].getPosition(), "position");
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}
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}
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// The actual tests:
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testWasmTrap(0, kTrapDivByZero, 12);
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testWasmTrap(1, kTrapMemOutOfBounds, 13);
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testWasmTrap(2, kTrapUnreachable, 26);
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testWasmTrap(3, kTrapFuncInvalid, 30);
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