5855e44c1a
This CL implements the throw wasm opcode. This is a pre-requisite for implementing try-catches in wasm. BUG= Review-Url: https://codereview.chromium.org/2339053003 Cr-Commit-Position: refs/heads/master@{#39449}
370 lines
9.1 KiB
JavaScript
370 lines
9.1 KiB
JavaScript
// Copyright 2015 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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function bytes() {
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var buffer = new ArrayBuffer(arguments.length);
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var view = new Uint8Array(buffer);
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for (var i = 0; i < arguments.length; i++) {
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var val = arguments[i];
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if ((typeof val) == "string") val = val.charCodeAt(0);
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view[i] = val | 0;
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}
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return buffer;
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}
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// Header declaration constants
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var kWasmH0 = 0;
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var kWasmH1 = 0x61;
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var kWasmH2 = 0x73;
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var kWasmH3 = 0x6d;
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var kWasmV0 = 11;
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var kWasmV1 = 0;
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var kWasmV2 = 0;
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var kWasmV3 = 0;
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var kHeaderSize = 8;
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var kPageSize = 65536;
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function bytesWithHeader() {
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var buffer = new ArrayBuffer(kHeaderSize + arguments.length);
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var view = new Uint8Array(buffer);
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view[0] = kWasmH0;
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view[1] = kWasmH1;
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view[2] = kWasmH2;
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view[3] = kWasmH3;
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view[4] = kWasmV0;
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view[5] = kWasmV1;
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view[6] = kWasmV2;
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view[7] = kWasmV3;
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for (var i = 0; i < arguments.length; i++) {
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var val = arguments[i];
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if ((typeof val) == "string") val = val.charCodeAt(0);
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view[kHeaderSize + i] = val | 0;
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}
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return buffer;
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}
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var kDeclNoLocals = 0;
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// Section declaration constants
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var kDeclMemory = 0x00;
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var kDeclTypes = 0x01;
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var kDeclFunctions = 0x02;
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var kDeclGlobals = 0x03;
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var kDeclData = 0x04;
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var kDeclTable = 0x05;
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var kDeclEnd = 0x06;
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var kDeclStart = 0x07;
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var kDeclImports = 0x08;
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var kDeclExports = 0x09;
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var kDeclFunctions = 0x0a;
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var kDeclCode = 0x0b;
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var kDeclNames = 0x0c;
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var kArity0 = 0;
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var kArity1 = 1;
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var kArity2 = 2;
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var kArity3 = 3;
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var kWasmFunctionTypeForm = 0x40;
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var section_names = [
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"memory", "type", "old_function", "global", "data",
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"table", "end", "start", "import", "export",
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"function", "code", "name"];
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// Function declaration flags
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var kDeclFunctionName = 0x01;
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var kDeclFunctionImport = 0x02;
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var kDeclFunctionLocals = 0x04;
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var kDeclFunctionExport = 0x08;
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// Local types
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var kAstStmt = 0;
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var kAstI32 = 1;
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var kAstI64 = 2;
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var kAstF32 = 3;
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var kAstF64 = 4;
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// Useful signatures
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var kSig_i = makeSig([], [kAstI32]);
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var kSig_d = makeSig([], [kAstF64]);
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var kSig_i_i = makeSig([kAstI32], [kAstI32]);
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var kSig_i_l = makeSig([kAstI64], [kAstI32]);
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var kSig_i_ii = makeSig([kAstI32, kAstI32], [kAstI32]);
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var kSig_i_iii = makeSig([kAstI32, kAstI32, kAstI32], [kAstI32]);
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var kSig_d_dd = makeSig([kAstF64, kAstF64], [kAstF64]);
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var kSig_l_ll = makeSig([kAstI64, kAstI64], [kAstI64]);
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var kSig_i_dd = makeSig([kAstF64, kAstF64], [kAstI32]);
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var kSig_v_v = makeSig([], []);
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var kSig_i_v = makeSig([], [kAstI32]);
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var kSig_v_i = makeSig([kAstI32], []);
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var kSig_v_ii = makeSig([kAstI32, kAstI32], []);
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var kSig_v_iii = makeSig([kAstI32, kAstI32, kAstI32], []);
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var kSig_v_d = makeSig([kAstF64], []);
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var kSig_v_dd = makeSig([kAstF64, kAstF64], []);
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var kSig_v_ddi = makeSig([kAstF64, kAstF64, kAstI32], []);
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function makeSig(params, results) {
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return {params: params, results: results};
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}
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function makeSig_v_x(x) {
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return makeSig([x], []);
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}
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function makeSig_v_xx(x) {
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return makeSig([x, x], []);
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}
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function makeSig_r_v(r) {
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return makeSig([], [r]);
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}
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function makeSig_r_x(r, x) {
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return makeSig([x], [r]);
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}
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function makeSig_r_xx(r, x) {
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return makeSig([x, x], [r]);
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}
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// Opcodes
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var kExprNop = 0x00;
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var kExprBlock = 0x01;
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var kExprLoop = 0x02;
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var kExprIf = 0x03;
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var kExprElse = 0x04;
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var kExprSelect = 0x05;
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var kExprBr = 0x06;
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var kExprBrIf = 0x07;
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var kExprBrTable = 0x08;
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var kExprReturn = 0x09;
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var kExprUnreachable = 0x0a;
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var kExprThrow = 0xfa;
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var kExprEnd = 0x0f;
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var kExprI32Const = 0x10;
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var kExprI64Const = 0x11;
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var kExprF64Const = 0x12;
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var kExprF32Const = 0x13;
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var kExprGetLocal = 0x14;
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var kExprSetLocal = 0x15;
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var kExprCallFunction = 0x16;
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var kExprCallIndirect = 0x17;
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var kExprCallImport = 0x18;
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var kExprI8Const = 0xcb;
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var kExprGetGlobal = 0xbb;
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var kExprSetGlobal = 0xbc;
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var kExprI32LoadMem8S = 0x20;
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var kExprI32LoadMem8U = 0x21;
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var kExprI32LoadMem16S = 0x22;
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var kExprI32LoadMem16U = 0x23;
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var kExprI64LoadMem8S = 0x24;
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var kExprI64LoadMem8U = 0x25;
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var kExprI64LoadMem16S = 0x26;
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var kExprI64LoadMem16U = 0x27;
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var kExprI64LoadMem32S = 0x28;
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var kExprI64LoadMem32U = 0x29;
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var kExprI32LoadMem = 0x2a;
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var kExprI64LoadMem = 0x2b;
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var kExprF32LoadMem = 0x2c;
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var kExprF64LoadMem = 0x2d;
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var kExprI32StoreMem8 = 0x2e;
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var kExprI32StoreMem16 = 0x2f;
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var kExprI64StoreMem8 = 0x30;
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var kExprI64StoreMem16 = 0x31;
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var kExprI64StoreMem32 = 0x32;
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var kExprI32StoreMem = 0x33;
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var kExprI64StoreMem = 0x34;
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var kExprF32StoreMem = 0x35;
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var kExprF64StoreMem = 0x36;
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var kExprMemorySize = 0x3b;
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var kExprGrowMemory = 0x39;
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var kExprI32Add = 0x40;
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var kExprI32Sub = 0x41;
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var kExprI32Mul = 0x42;
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var kExprI32DivS = 0x43;
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var kExprI32DivU = 0x44;
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var kExprI32RemS = 0x45;
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var kExprI32RemU = 0x46;
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var kExprI32And = 0x47;
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var kExprI32Ior = 0x48;
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var kExprI32Xor = 0x49;
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var kExprI32Shl = 0x4a;
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var kExprI32ShrU = 0x4b;
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var kExprI32ShrS = 0x4c;
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var kExprI32Eq = 0x4d;
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var kExprI32Ne = 0x4e;
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var kExprI32LtS = 0x4f;
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var kExprI32LeS = 0x50;
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var kExprI32LtU = 0x51;
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var kExprI32LeU = 0x52;
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var kExprI32GtS = 0x53;
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var kExprI32GeS = 0x54;
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var kExprI32GtU = 0x55;
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var kExprI32GeU = 0x56;
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var kExprI32Clz = 0x57;
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var kExprI32Ctz = 0x58;
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var kExprI32Popcnt = 0x59;
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var kExprI32Eqz = 0x5a;
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var kExprI64Add = 0x5b;
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var kExprI64Sub = 0x5c;
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var kExprI64Mul = 0x5d;
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var kExprI64DivS = 0x5e;
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var kExprI64DivU = 0x5f;
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var kExprI64RemS = 0x60;
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var kExprI64RemU = 0x61;
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var kExprI64And = 0x62;
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var kExprI64Ior = 0x63;
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var kExprI64Xor = 0x64;
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var kExprI64Shl = 0x65;
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var kExprI64ShrU = 0x66;
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var kExprI64ShrS = 0x67;
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var kExprI64Eq = 0x68;
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var kExprI64Ne = 0x69;
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var kExprI64LtS = 0x6a;
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var kExprI64LeS = 0x6b;
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var kExprI64LtU = 0x6c;
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var kExprI64LeU = 0x6d;
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var kExprI64GtS = 0x6e;
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var kExprI64GeS = 0x6f;
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var kExprI64GtU = 0x70;
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var kExprI64GeU = 0x71;
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var kExprI64Clz = 0x72;
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var kExprI64Ctz = 0x73;
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var kExprI64Popcnt = 0x74;
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var kExprF32Add = 0x75;
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var kExprF32Sub = 0x76;
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var kExprF32Mul = 0x77;
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var kExprF32Div = 0x78;
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var kExprF32Min = 0x79;
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var kExprF32Max = 0x7a;
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var kExprF32Abs = 0x7b;
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var kExprF32Neg = 0x7c;
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var kExprF32CopySign = 0x7d;
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var kExprF32Ceil = 0x7e;
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var kExprF32Floor = 0x7f;
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var kExprF32Trunc = 0x80;
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var kExprF32NearestInt = 0x81;
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var kExprF32Sqrt = 0x82;
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var kExprF32Eq = 0x83;
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var kExprF32Ne = 0x84;
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var kExprF32Lt = 0x85;
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var kExprF32Le = 0x86;
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var kExprF32Gt = 0x87;
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var kExprF32Ge = 0x88;
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var kExprF64Add = 0x89;
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var kExprF64Sub = 0x8a;
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var kExprF64Mul = 0x8b;
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var kExprF64Div = 0x8c;
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var kExprF64Min = 0x8d;
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var kExprF64Max = 0x8e;
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var kExprF64Abs = 0x8f;
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var kExprF64Neg = 0x90;
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var kExprF64CopySign = 0x91;
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var kExprF64Ceil = 0x92;
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var kExprF64Floor = 0x93;
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var kExprF64Trunc = 0x94;
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var kExprF64NearestInt = 0x95;
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var kExprF64Sqrt = 0x96;
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var kExprF64Eq = 0x97;
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var kExprF64Ne = 0x98;
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var kExprF64Lt = 0x99;
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var kExprF64Le = 0x9a;
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var kExprF64Gt = 0x9b;
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var kExprF64Ge = 0x9c;
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var kExprI32SConvertF32 = 0x9d;
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var kExprI32SConvertF64 = 0x9e;
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var kExprI32UConvertF32 = 0x9f;
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var kExprI32UConvertF64 = 0xa0;
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var kExprI32ConvertI64 = 0xa1;
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var kExprI64SConvertF32 = 0xa2;
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var kExprI64SConvertF64 = 0xa3;
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var kExprI64UConvertF32 = 0xa4;
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var kExprI64UConvertF64 = 0xa5;
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var kExprI64SConvertI32 = 0xa6;
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var kExprI64UConvertI32 = 0xa7;
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var kExprF32SConvertI32 = 0xa8;
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var kExprF32UConvertI32 = 0xa9;
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var kExprF32SConvertI64 = 0xaa;
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var kExprF32UConvertI64 = 0xab;
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var kExprF32ConvertF64 = 0xac;
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var kExprF32ReinterpretI32 = 0xad;
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var kExprF64SConvertI32 = 0xae;
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var kExprF64UConvertI32 = 0xaf;
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var kExprF64SConvertI64 = 0xb0;
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var kExprF64UConvertI64 = 0xb1;
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var kExprF64ConvertF32 = 0xb2;
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var kExprF64ReinterpretI64 = 0xb3;
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var kExprI32ReinterpretF32 = 0xb4;
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var kExprI64ReinterpretF64 = 0xb5;
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var kExprI32Ror = 0xb6;
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var kExprI32Rol = 0xb7;
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var kExprI64Ror = 0xb8;
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var kExprI64Rol = 0xb9;
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var kTrapUnreachable = 0;
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var kTrapMemOutOfBounds = 1;
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var kTrapDivByZero = 2;
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var kTrapDivUnrepresentable = 3;
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var kTrapRemByZero = 4;
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var kTrapFloatUnrepresentable = 5;
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var kTrapFuncInvalid = 6;
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var kTrapFuncSigMismatch = 7;
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var kTrapInvalidIndex = 8;
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var kTrapMsgs = [
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"unreachable",
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"memory access out of bounds",
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"divide by zero",
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"divide result unrepresentable",
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"remainder by zero",
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"integer result unrepresentable",
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"invalid function",
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"function signature mismatch",
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"invalid index into function table"
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];
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function assertTraps(trap, code) {
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var threwException = true;
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try {
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if (typeof code === 'function') {
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code();
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} else {
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eval(code);
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}
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threwException = false;
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} catch (e) {
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assertEquals("object", typeof e);
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assertEquals(kTrapMsgs[trap], e.message);
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// Success.
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return;
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}
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throw new MjsUnitAssertionError("Did not trap, expected: " + kTrapMsgs[trap]);
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}
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function assertWasmThrows(value, code) {
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assertEquals("number", typeof(value));
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try {
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if (typeof code === 'function') {
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code();
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} else {
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eval(code);
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}
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} catch (e) {
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assertEquals("number", typeof e);
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assertEquals(value, e);
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// Success.
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return;
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}
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throw new MjsUnitAssertionError("Did not throw at all, expected: " + value);
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}
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