| // 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)); |