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// Copyright 2015 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 --expose-gc --allow-natives-syntax
load("test/mjsunit/wasm/wasm-constants.js");
function assertTraps(code, msg) {
var threwException = true;
try {
if (typeof code === 'function') {
code();
} else {
eval(code);
}
threwException = false;
} catch (e) {
if (typeof type_opt === 'function') {
assertInstanceof(e, type_opt);
}
if (arguments.length >= 3) {
assertEquals(e.type, cause_opt);
}
// Success.
return;
}
throw new MjsUnitAssertionError("Did not throw exception");
}
function makeDivRem(opcode) {
var kBodySize = 5;
var kNameMainOffset = 6 + 11 + kBodySize + 1;
var data = bytes(
// signatures
kDeclSignatures, 1,
2, kAstI32, kAstI32, kAstI32, // (int,int) -> int
// -- main function
kDeclFunctions, 1,
kDeclFunctionName | kDeclFunctionExport,
0, 0,
kNameMainOffset, 0, 0, 0, // name offset
kBodySize, 0,
// main body
opcode, // --
kExprGetLocal, 0, // --
kExprGetLocal, 1, // --
// names
kDeclEnd,
'm', 'a', 'i', 'n', 0 // --
);
var module = _WASMEXP_.instantiateModule(data);
assertEquals("function", typeof module.main);
return module.main;
}
var divs = makeDivRem(kExprI32DivS);
var divu = makeDivRem(kExprI32DivU);
assertEquals( 33, divs( 333, 10));
assertEquals(-33, divs(-336, 10));
assertEquals( 44, divu( 445, 10));
assertEquals(429496685, divu(-446, 10));
assertTraps(kTrapDivByZero, "divs(100, 0);");
assertTraps(kTrapDivByZero, "divs(-1009, 0);");
assertTraps(kTrapDivByZero, "divu(200, 0);");
assertTraps(kTrapDivByZero, "divu(-2009, 0);");
assertTraps(kTrapDivUnrepresentable, "divs(0x80000000, -1)");
assertEquals(0, divu(0x80000000, -1));
var rems = makeDivRem(kExprI32RemS);
var remu = makeDivRem(kExprI32RemU);
assertEquals( 3, rems( 333, 10));
assertEquals(-6, rems(-336, 10));
assertEquals( 5, remu( 445, 10));
assertEquals( 3, remu(-443, 10));
assertTraps(kTrapRemByZero, "rems(100, 0);");
assertTraps(kTrapRemByZero, "rems(-1009, 0);");
assertTraps(kTrapRemByZero, "remu(200, 0);");
assertTraps(kTrapRemByZero, "remu(-2009, 0);");
assertEquals(-2147483648, remu(0x80000000, -1));
assertEquals(0, rems(0x80000000, -1));
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