v8/test/mjsunit/wasm/start-function.js
titzer e97ca6ec47 [wasm] Refactor import handling for 0xC.
Imports and exports in 0xC can be much more than functions, including
tables, memories, and globals. This CL refactors the underlying
organization of imports and exports to support these new import types.

BUG=

Committed: https://crrev.com/599f8a83420346d9cba5ff97bd2a7520468207b6
Review-Url: https://codereview.chromium.org/2390113003
Cr-Original-Commit-Position: refs/heads/master@{#40033}
Cr-Commit-Position: refs/heads/master@{#40050}
2016-10-06 15:43:22 +00:00

112 lines
2.6 KiB
JavaScript

// Copyright 2016 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: --expose-wasm
load("test/mjsunit/wasm/wasm-constants.js");
load("test/mjsunit/wasm/wasm-module-builder.js");
function instantiate(sig, body) {
var builder = new WasmModuleBuilder();
var func = builder.addFunction("", sig)
.addBody(body);
builder.addStart(func.index);
return builder.instantiate();
}
function assertFails(sig, body) {
try {
var module = instantiate(sig, body);
print("expected failure, but passes");
assertFalse(true);
} catch (expected) {
print("ok: " + expected);
}
}
function assertVerifies(sig, body) {
var module = instantiate(sig, body);
assertFalse(module === undefined);
assertFalse(module === null);
assertFalse(module === 0);
assertEquals("object", typeof module);
return module;
}
assertVerifies(kSig_v_v, [kExprNop]);
assertVerifies(kSig_i_v, [kExprI8Const, 0]);
// Arguments aren't allow to start functions.
assertFails(kSig_i_i, [kExprGetLocal, 0]);
assertFails(kSig_i_ii, [kExprGetLocal, 0]);
assertFails(kSig_i_dd, [kExprGetLocal, 0]);
(function testInvalidIndex() {
print("testInvalidIndex");
var builder = new WasmModuleBuilder();
var func = builder.addFunction("", kSig_v_v)
.addBody([kExprNop]);
builder.addStart(func.index + 1);
assertThrows(builder.instantiate);
})();
(function testTwoStartFuncs() {
print("testTwoStartFuncs");
var builder = new WasmModuleBuilder();
var func = builder.addFunction("", kSig_v_v)
.addBody([kExprNop]);
builder.addExplicitSection([kStartSectionCode, 0]);
builder.addExplicitSection([kStartSectionCode, 0]);
assertThrows(builder.instantiate);
})();
(function testRun() {
print("testRun");
var builder = new WasmModuleBuilder();
builder.addMemory(12, 12, true);
var func = builder.addFunction("", kSig_v_v)
.addBody([kExprI8Const, 0, kExprI8Const, 77, kExprI32StoreMem, 0, 0]);
builder.addStart(func.index);
var module = builder.instantiate();
var memory = module.exports.memory.buffer;
var view = new Int8Array(memory);
assertEquals(77, view[0]);
})();
(function testStartFFI() {
print("testStartFFI");
var ranned = false;
var ffi = { foo : function() {
print("we ranned at stert!");
ranned = true;
}};
var builder = new WasmModuleBuilder();
var sig_index = builder.addType(kSig_v_v);
builder.addImport("foo", sig_index);
var func = builder.addFunction("", sig_index)
.addBody([kExprCallFunction, 0]);
builder.addStart(func.index);
var module = builder.instantiate(ffi);
assertTrue(ranned);
})();