922 lines
27 KiB
JavaScript
922 lines
27 KiB
JavaScript
// This file is part of AsmJit project <https://asmjit.com>
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//
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// See asmjit.h or LICENSE.md for license and copyright information
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// SPDX-License-Identifier: Zlib
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(function($scope, $as) {
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"use strict";
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function FAIL(msg) { throw new Error("[AArch64] " + msg); }
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// Import
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// ======
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const base = $scope.base ? $scope.base : require("./base.js");
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const exp = $scope.exp ? $scope.exp : require("./exp.js")
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const hasOwn = Object.prototype.hasOwnProperty;
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const dict = base.dict;
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const NONE = base.NONE;
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const Parsing = base.Parsing;
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const MapUtils = base.MapUtils;
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// Export
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// ======
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const arm = $scope[$as] = dict();
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// Database
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// ========
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arm.dbName = "isa_aarch64.json";
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// asmdb.aarch64.Utils
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// ===================
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// Can be used to assign the number of bits each part of the opcode occupies.
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// NOTE: THUMB instructions that use halfword must always specify the width
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// of all registers as many instructions accept only LO (r0..r7) registers.
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const FieldInfo = {
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"P" : { "bits": 1 },
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"U" : { "bits": 1 },
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"W" : { "bits": 1 },
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"S" : { "bits": 1 },
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"R" : { "bits": 1 },
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"H" : { "bits": 1 },
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"F" : { "bits": 1 },
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"post" : { "bits": 1 },
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"!post" : { "bits": 1 },
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"op" : { "bits": 1 }, // TODO: This should be fixed.
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"s" : { "bits": 1 },
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"sz" : { "bits": 2 },
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"msz" : { "bits": 2 },
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"sop" : { "bits": 2 },
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"cond" : { "bits": 4 },
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"nzcv" : { "bits": 4 },
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"cmode" : { "bits": 4 },
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"CRn" : { "bits": 4 },
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"CRm" : { "bits": 4 },
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"Rx" : { "bits": 5, "read": true , "write": true },
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"Rx2" : { "bits": 5, "read": true , "write": true },
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"Rdn" : { "bits": 5, "read": true , "write": true },
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"Rd" : { "bits": 5, "read": false, "write": true },
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"Rd2" : { "bits": 5, "read": false, "write": true },
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"Rs" : { "bits": 5, "read": true , "write": false },
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"Rs2" : { "bits": 5, "read": true , "write": false },
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"Rn" : { "bits": 5, "read": true , "write": false },
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"Rm" : { "bits": 5, "read": true , "write": false },
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"Ra" : { "bits": 5, "read": true , "write": false },
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"Rt" : { "bits": 5, "read": true , "write": false },
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"Rt2" : { "bits": 5, "read": true , "write": false },
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"Wx" : { "bits": 5, "read": true , "write": true },
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"Wx2" : { "bits": 5, "read": true , "write": true },
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"Wdn" : { "bits": 5, "read": true , "write": true },
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"Wd" : { "bits": 5, "read": false, "write": true },
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"Wd2" : { "bits": 5, "read": false, "write": true },
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"Ws" : { "bits": 5, "read": true , "write": false },
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"Ws2" : { "bits": 5, "read": true , "write": false },
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"Wn" : { "bits": 5, "read": true , "write": false },
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"Wm" : { "bits": 5, "read": true , "write": false },
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"Wa" : { "bits": 5, "read": true , "write": false },
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"Wt" : { "bits": 5, "read": true , "write": false },
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"Wt2" : { "bits": 5, "read": true , "write": false },
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"Xx" : { "bits": 5, "read": true , "write": true },
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"Xx2" : { "bits": 5, "read": true , "write": true },
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"Xdn" : { "bits": 5, "read": true , "write": true },
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"Xd" : { "bits": 5, "read": false, "write": true },
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"Xd2" : { "bits": 5, "read": false, "write": true },
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"Xs" : { "bits": 5, "read": true , "write": false },
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"Xs2" : { "bits": 5, "read": true , "write": false },
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"Xn" : { "bits": 5, "read": true , "write": false },
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"Xm" : { "bits": 5, "read": true , "write": false },
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"Xa" : { "bits": 5, "read": true , "write": false },
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"Xt" : { "bits": 5, "read": true , "write": false },
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"Xt2" : { "bits": 5, "read": true , "write": false },
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"Bx" : { "bits": 5, "read": true , "write": true },
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"Bx2" : { "bits": 5, "read": true , "write": true },
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"Bdn" : { "bits": 5, "read": true , "write": true },
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"Bd" : { "bits": 5, "read": false, "write": true },
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"Bd2" : { "bits": 5, "read": false, "write": true },
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"Bs" : { "bits": 5, "read": true , "write": false },
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"Bs2" : { "bits": 5, "read": true , "write": false },
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"Bn" : { "bits": 5, "read": true , "write": false },
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"Bm" : { "bits": 5, "read": true , "write": false },
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"Ba" : { "bits": 5, "read": true , "write": false },
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"Hx" : { "bits": 5, "read": true , "write": true },
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"Hx2" : { "bits": 5, "read": true , "write": true },
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"Hdn" : { "bits": 5, "read": true , "write": true },
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"Hd" : { "bits": 5, "read": false, "write": true },
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"Hd2" : { "bits": 5, "read": false, "write": true },
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"Hs" : { "bits": 5, "read": true , "write": false },
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"Hs2" : { "bits": 5, "read": true , "write": false },
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"Hn" : { "bits": 5, "read": true , "write": false },
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"Hm" : { "bits": 5, "read": true , "write": false },
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"Ha" : { "bits": 5, "read": true , "write": false },
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"Sx" : { "bits": 5, "read": true , "write": true },
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"Sx2" : { "bits": 5, "read": true , "write": true },
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"Sdn" : { "bits": 5, "read": true , "write": true },
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"Sd" : { "bits": 5, "read": false, "write": true },
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"Sd2" : { "bits": 5, "read": false, "write": true },
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"Ss" : { "bits": 5, "read": true , "write": false },
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"Ss2" : { "bits": 5, "read": true , "write": false },
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"Sn" : { "bits": 5, "read": true , "write": false },
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"Sm" : { "bits": 5, "read": true , "write": false },
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"Sa" : { "bits": 5, "read": true , "write": false },
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"Dx" : { "bits": 5, "read": true , "write": true },
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"Dx2" : { "bits": 5, "read": true , "write": true },
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"Ddn" : { "bits": 5, "read": true , "write": true },
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"Dd" : { "bits": 5, "read": false, "write": true },
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"Dd2" : { "bits": 5, "read": false, "write": true },
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"Ds" : { "bits": 5, "read": true , "write": false },
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"Ds2" : { "bits": 5, "read": true , "write": false },
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"Dn" : { "bits": 5, "read": true , "write": false },
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"Dn2" : { "bits": 5, "read": true , "write": false },
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"Dm" : { "bits": 5, "read": true , "write": false },
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"Da" : { "bits": 5, "read": true , "write": false },
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"Qx" : { "bits": 5, "read": true , "write": true },
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"Qx2" : { "bits": 5, "read": true , "write": true },
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"Qdn" : { "bits": 5, "read": true , "write": true },
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"Qd" : { "bits": 5, "read": false, "write": true },
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"Qd2" : { "bits": 5, "read": false, "write": true },
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"Qs" : { "bits": 5, "read": true , "write": false },
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"Qs2" : { "bits": 5, "read": true , "write": false },
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"Qn" : { "bits": 5, "read": true , "write": false },
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"Qn2" : { "bits": 5, "read": true , "write": false },
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"Qm" : { "bits": 5, "read": true , "write": false },
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"Qa" : { "bits": 5, "read": true , "write": false },
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"Vx" : { "bits": 5, "read": true , "write": true },
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"Vx2" : { "bits": 5, "read": true , "write": true },
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"Vdn" : { "bits": 5, "read": true , "write": true },
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"Vd" : { "bits": 5, "read": false, "write": true },
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"Vd2" : { "bits": 5, "read": false, "write": true },
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"Vs" : { "bits": 5, "read": true , "write": false },
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"Vs2" : { "bits": 5, "read": true , "write": false },
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"Vn" : { "bits": 5, "read": true , "write": false },
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"Vm" : { "bits": 5, "read": true , "write": false },
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"Va" : { "bits": 5, "read": true , "write": false },
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"Zx" : { "bits": 5, "read": true , "write": true },
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"Zx2" : { "bits": 5, "read": true , "write": true },
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"Zda" : { "bits": 5, "read": true , "write": true },
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"Zdn" : { "bits": 5, "read": true , "write": true },
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"Zdn2" : { "bits": 5, "read": true , "write": true },
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"Zd" : { "bits": 5, "read": false, "write": true },
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"Zd2" : { "bits": 5, "read": false, "write": true },
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"Zs" : { "bits": 5, "read": true , "write": false },
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"Zs2" : { "bits": 5, "read": true , "write": false },
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"Zn" : { "bits": 5, "read": true , "write": false },
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"Zm" : { "bits": 5, "read": true , "write": false },
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"Zk" : { "bits": 5, "read": true , "write": false },
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"Za" : { "bits": 5, "read": true , "write": false },
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"Pdn" : { "bits": 4, "read": true , "write": true },
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"Pdm" : { "bits": 4, "read": true , "write": true },
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"Pd" : { "bits": 4, "read": false, "write": true },
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"Ps" : { "bits": 4, "read": true , "write": false },
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"Pn" : { "bits": 4, "read": true , "write": false },
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"Pm" : { "bits": 4, "read": true , "write": false },
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"Pg" : { "bits": 4, "read": true , "write": false }
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};
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arm.FieldInfo = FieldInfo;
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// AArch64 utilities.
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class Utils {
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static splitInstructionSignature(s) {
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const names = s.match(/^[\w\|]+/)[0];
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s = s.substring(names.length);
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const opOffset = s.indexOf(" ")
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const suffix = s.substring(0, opOffset).trim();
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const operands = opOffset === -1 ? "" : s.substring(opOffset + 1).trim();
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return {
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names: names.split("|").map((base)=>{ return base + suffix}),
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operands: operands
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}
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}
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static parseShiftOrExtendOp(s) {
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const space = s.indexOf(" ");
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if (space === -1)
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return "";
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const ops = s.substring(0, space).trim();
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for (let op of ops.split("|"))
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if (!/^(sop|extend|lsl|lsr|asr|uxtw|sxtw|sxtx|mul)$/.test(op))
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return "";
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return ops;
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}
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}
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arm.Utils = Utils;
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function normalizeNumber(n) {
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return n < 0 ? 0x100000000 + n : n;
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}
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function decomposeOperand(s) {
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let type = null;
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let element = null;
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let consecutive = 0;
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let maskType = "";
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const elementM = s.match(/\[#(\w+)\]$/);
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if (elementM) {
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element = elementM[1];
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s = s.substring(0, s.length - elementM[0].length);
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}
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const typeM = s.match(/\.(\w+)$/);
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if (typeM) {
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type = typeM[1];
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s = s.substring(0, s.length - typeM[0].length);
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}
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const maskM = s.match(/\/(M|Z|MZ)$/);
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if (maskM) {
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maskType = maskM[1];
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s = s.substring(0, s.length - maskM[0].length);
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}
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if (s.endsWith("++")) {
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consecutive = 2;
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s = s.substring(0, s.length - 2);
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}
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else if (s.endsWith("+")) {
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consecutive = 1;
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s = s.substring(0, s.length - 1);
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}
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let m = s.match(/==|\!=|>=|<=|\*/);
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let restrict = false;
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if (m) {
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restrict = s.substring(m.index);
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s = s.substring(0, m.index);
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}
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return {
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data : s,
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maskType : maskType,
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type : type,
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element : element,
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restrict : restrict,
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consecutive: consecutive
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};
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}
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function splitOpcodeFields(s) {
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const arr = s.split("|");
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const out = [];
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for (let i = 0; i < arr.length; i++) {
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const val = arr[i];
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if (/^[0-1A-Z]{2,}$/.test(val))
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out.push.apply(out, val.match(/([0-1]+)|[A-Z]/g));
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else
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out.push(val);
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}
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return out.map((field)=>{return field.trim(); });
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}
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// asmdb.aarch64.Operand
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// =====================
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// ARM operand.
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class Operand extends base.Operand {
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constructor(def) {
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super(def);
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// Register.
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this.sp = ""; // GP register stack access: ["", "WSP" or "SP"].
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this.mask = ""; // Masking specifier.
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}
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hasMemModes() {
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return Object.keys(this.memModes).length !== 0;
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}
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get name() {
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switch (this.type) {
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case "reg": return this.reg;
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case "mem": return this.mem;
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case "imm": return this.imm;
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case "rel": return this.rel;
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default : return "";
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}
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}
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get scale() {
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if (this.restrict && this.restrict.startsWith("*"))
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return parseInt(this.restrict.substring(1), 10);
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else
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return 0;
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}
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}
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arm.Operand = Operand;
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// asmdb.aarch64.Instruction
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// =========================
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function patternFromOperand(key) { return key; }
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// ARM instruction.
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class Instruction extends base.Instruction {
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constructor(db, data) {
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super(db, data);
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this.name = data.name;
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this.it = dict(); // THUMB's 'it' flags.
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this.apsr = dict();
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this.fpcsr = dict();
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this.calc = dict(); // Calculations required to generate opcode.
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this.immCond = []; // Immediate value conditions (array of conditions).
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this._assignOperands(data.operands);
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this._assignOpcode(data.op);
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for (let k in data) {
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if (k === "name" || k == "op" || k === "operands")
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continue;
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this._assignAttribute(k, data[k]);
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}
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this._updateOperandsInfo();
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this._postProcess();
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}
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_assignAttribute(key, value) {
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switch (key) {
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case "it":
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for (let it of value.split(" "))
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this.it[it.trim()] = true;
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break;
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case "apsr":
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case "fpcsr":
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this._assignAttributeKeyValue(key, value);
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break;
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case "imm":
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this.imm = exp.parse(value);
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break;
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case "calc":
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for (let calcKey in value)
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this.calc[calcKey] = exp.parse(value[calcKey]);
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break;
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default:
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super._assignAttribute(key, value);
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}
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}
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_assignAttributeKeyValue(name, content) {
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const attributes = content.trim().split(/[ ]+/);
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for (let i = 0; i < attributes.length; i++) {
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const attr = attributes[i].trim();
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if (!attr)
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continue;
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const eq = attr.indexOf("=");
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let key = eq === -1 ? attr : attr.substring(0, eq);
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let val = eq === -1 ? true : attr.substring(eq + 1);
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// If the key contains "|" it's a definition of multiple attributes.
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if (key.indexOf("|") !== -1) {
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const dot = key.indexOf(".");
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const base = dot === -1 ? "" : key.substring(0, dot + 1);
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const keys = (dot === -1 ? key : key.substring(dot + 1)).split("|");
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for (let j = 0; j < keys.length; j++)
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this[name][base + keys[j]] = val;
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}
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else {
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this[name][key] = val;
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}
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}
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}
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_assignOperands(s) {
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if (!s) return;
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// Split into individual operands and push them to `operands`.
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const arr = base.Parsing.splitOperands(s);
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for (let i = 0; i < arr.length; i++) {
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let def = arr[i].trim();
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const op = new Operand(def);
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const sp = def.match(/^(\w+)\|(SP|WSP)$/);
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if (sp) {
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def = sp[1];
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op.sp = sp[2];
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}
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const consecutive = def.match(/(\d+)x\{(.*)\}([+]?[+]?)/);
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if (consecutive)
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def = consecutive[2];
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op.sign = false;
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op.element = null;
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op.shiftOp = "";
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op.shiftImm = null;
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op.shiftCond = "";
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// Handle {optional} attribute.
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if (Parsing.isOptional(def)) {
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op.optional = true;
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def = Parsing.clearOptional(def);
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}
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// Handle commutativity <-> symbol.
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if (Parsing.isCommutative(def)) {
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op.commutative = true;
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def = Parsing.clearCommutative(def);
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}
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// Handle shift operation.
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let shiftOp = Utils.parseShiftOrExtendOp(def);
|
|
if (shiftOp) {
|
|
op.shiftOp = shiftOp;
|
|
def = def.substring(shiftOp.length + 1);
|
|
}
|
|
|
|
if (def.startsWith("[")) {
|
|
op.type = "mem";
|
|
op.memModes = dict();
|
|
|
|
op.base = null;
|
|
op.index = null;
|
|
op.offset = null;
|
|
|
|
let mem = def;
|
|
let didHaveMemMode = false;
|
|
|
|
for (;;) {
|
|
if (mem.endsWith("!")) {
|
|
op.memModes.preIndex = true;
|
|
mem = mem.substring(0, mem.length - 1);
|
|
|
|
didHaveMemMode = true;
|
|
break;
|
|
}
|
|
|
|
if (mem.endsWith("@")) {
|
|
op.memModes.postIndex = true;
|
|
mem = mem.substring(0, mem.length - 1);
|
|
|
|
didHaveMemMode = true;
|
|
break;
|
|
}
|
|
|
|
if (mem.endsWith("{!}")) {
|
|
op.memModes.offset = true;
|
|
op.memModes.preIndex = true;
|
|
mem = mem.substring(0, mem.length - 3);
|
|
|
|
didHaveMemMode = true;
|
|
continue;
|
|
}
|
|
|
|
if (mem.endsWith("{@}")) {
|
|
op.memModes.offset = true;
|
|
op.memModes.postIndex = true;
|
|
mem = mem.substring(0, mem.length - 3);
|
|
|
|
didHaveMemMode = true;
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (!mem.endsWith("]"))
|
|
FAIL(`Unknown memory operand '${mem}' in '${def}'`);
|
|
|
|
let parts = mem.substring(1, mem.length - 1).split(",").map(function(s) { return s.trim() });
|
|
for (let i = 0; i < parts.length; i++) {
|
|
const part = parts[i];
|
|
|
|
const m = part.match(/^\{(([a-z]+)(\|[a-z]+)*)\s+#(\w+)\s*(\*\s*\d+\s*)?\}$/);
|
|
if (m) {
|
|
op.shiftOp = m[1];
|
|
op.shiftImm = m[2];
|
|
if (m[3])
|
|
op.shiftCond = m[3]
|
|
continue;
|
|
}
|
|
|
|
if (i === 0) {
|
|
op.base = dict();
|
|
op.base.field = part;
|
|
op.base.exp = null;
|
|
|
|
const m = part.match(/^([A-Za-z]\w*(?:\.\w+)?)/);
|
|
if (m && m[1].length < part.length) {
|
|
op.base.exp = exp.parse(part);
|
|
op.base.field = m[1];
|
|
}
|
|
}
|
|
else if (part.startsWith("#")) {
|
|
let p = part.substring(1);
|
|
let u = "1";
|
|
|
|
let offExp = null;
|
|
let offMul = 1;
|
|
|
|
if (p.startsWith("+/-")) {
|
|
u = "U";
|
|
p = p.substring(3);
|
|
}
|
|
|
|
const expMatch = p.match(/^([A-Za-z]\w*)==/);
|
|
if (expMatch) {
|
|
offExp = exp.parse(p);
|
|
p = p.substring(0, expMatch[1].length);
|
|
}
|
|
|
|
const mulMatch = p.match(/\s*\*\s*(\d+)$/);
|
|
if (mulMatch) {
|
|
offMul = parseInt(mulMatch[1]);
|
|
p = p.substring(0, mulMatch.index);
|
|
}
|
|
|
|
op.offset = dict();
|
|
op.offset.field = p;
|
|
op.offset.u = u;
|
|
op.offset.exp = offExp;
|
|
op.offset.mul = offMul;
|
|
}
|
|
else {
|
|
let p = part;
|
|
let u = "1";
|
|
|
|
if (p.startsWith("+/-")) {
|
|
u = "U";
|
|
p = p.substring(3);
|
|
}
|
|
|
|
op.index = dict();
|
|
op.index.field = p;
|
|
op.index.u = u;
|
|
|
|
const m = p.match(/^([A-Za-z\|]\w*(?:\.\w+)?)/);
|
|
if (m && m[1].length < p.length) {
|
|
op.index.exp = exp.parse(p);
|
|
op.index.field = m[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!op.hasMemModes() && (op.offset || op.index))
|
|
op.memModes.offset = true;
|
|
|
|
op.mem = mem;
|
|
}
|
|
else if (def.startsWith("#")) {
|
|
const obj = decomposeOperand(def);
|
|
const imm = obj.data;
|
|
|
|
op.type = "imm";
|
|
op.imm = imm.substring(1); // Immediate operand name.
|
|
op.immSize = 0; // Immediate size in bits.
|
|
op.restrict = obj.restrict; // Immediate condition.
|
|
}
|
|
else {
|
|
// Some instructions use Reg! to specify that the register increments.
|
|
if (def.endsWith("!")) {
|
|
def = def.substring(0, def.length - 1)
|
|
op.regInc = true
|
|
}
|
|
|
|
const obj = decomposeOperand(def);
|
|
const reg = obj.data;
|
|
|
|
const type = reg.substring(0, 1).toLowerCase();
|
|
const info = FieldInfo[reg];
|
|
|
|
if (!info)
|
|
FAIL(`Unknown register operand '${reg}' in '${def}'`);
|
|
|
|
op.type = info.list ? "reg-list" : "reg";
|
|
op.reg = reg; // Register name (as specified in manual).
|
|
op.regType = type; // Register type.
|
|
op.regList = !!info.list; // Register list.
|
|
op.maskType = obj.maskType; // Mask type.
|
|
op.elementType = obj.type // Element type or t, ta, tb.
|
|
op.read = info.read; // Register access (read).
|
|
op.write = info.write; // Register access (write).
|
|
op.element = obj.element; // Register element[] access.
|
|
op.restrict = obj.restrict; // Register condition.
|
|
op.consecutive = obj.consecutive;
|
|
}
|
|
|
|
this.operands.push(op);
|
|
|
|
if (consecutive) {
|
|
const count = parseInt(consecutive[1]);
|
|
for (let n = 2; n <= count; n++) {
|
|
const def = consecutive[3].replace(op.reg, op.reg + n);
|
|
const opN = new Operand(def);
|
|
opN.type = "reg";
|
|
opN.reg = op.reg + n;
|
|
opN.regType = op.regType;
|
|
opN.read = op.read;
|
|
opN.write = op.write;
|
|
opN.element = op.element;
|
|
opN.consecutive = consecutive[3].length;
|
|
opN.artificial = true;
|
|
this.operands.push(opN);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
_assignOpcode(s) {
|
|
this.opcodeString = s;
|
|
|
|
let opcodeIndex = 0;
|
|
let opcodeValue = 0;
|
|
|
|
let patternMap = {};
|
|
|
|
// Split opcode into its fields.
|
|
const arr = splitOpcodeFields(s);
|
|
const dup = dict();
|
|
|
|
const fields = this.fields;
|
|
const pattern = [];
|
|
|
|
const fieldMap = Object.create(null);
|
|
for (let field of arr) {
|
|
fieldMap[field] = true;
|
|
}
|
|
|
|
for (let i = arr.length - 1; i >= 0; i--) {
|
|
let key = arr[i].trim();
|
|
let m;
|
|
|
|
if (/^[0-1]+$/.test(key)) {
|
|
// This part of the opcode is RAW bits, they contribute to the `opcodeValue`.
|
|
opcodeValue |= parseInt(key, 2) << opcodeIndex;
|
|
opcodeIndex += key.length;
|
|
pattern.unshift("_".repeat(key.length));
|
|
}
|
|
else {
|
|
pattern.unshift(patternFromOperand(key));
|
|
patternMap[patternFromOperand(key)] = true;
|
|
|
|
let size = 0;
|
|
let mask = 0;
|
|
let bits = 0;
|
|
let from = -1;
|
|
|
|
let lbit = key.startsWith("'");
|
|
let hbit = key.endsWith("'");
|
|
|
|
if ((m = key.match(/\[\s*(\d+)\s*\:\s*(\d+)\s*\]$/))) {
|
|
const a = parseInt(m[1], 10);
|
|
const b = parseInt(m[2], 10);
|
|
if (a < b)
|
|
FAIL(`Invalid bit range '${key}' in opcode '${s}'`);
|
|
from = b;
|
|
size = a - b + 1;
|
|
mask = ((1 << size) - 1) << b;
|
|
key = key.substring(0, m.index).trim();
|
|
}
|
|
else if ((m = key.match(/\[\s*(\d+)\s*\]$/))) {
|
|
from = parseInt(m[1], 10);
|
|
size = 1;
|
|
mask = 1 << from;
|
|
key = key.substring(0, m.index).trim();
|
|
}
|
|
else if ((m = key.match(/\:\s*(\d+)$/))) {
|
|
size = parseInt(m[1], 10);
|
|
bits = size;
|
|
key = key.substring(0, m.index).trim();
|
|
}
|
|
else {
|
|
const key_ = key;
|
|
|
|
if (lbit || hbit) {
|
|
from = 0;
|
|
|
|
if (lbit && hbit)
|
|
FAIL(`Couldn't recognize the format of '${key}' in opcode '${s}'`);
|
|
|
|
if (lbit) {
|
|
key = key.substring(1);
|
|
}
|
|
|
|
if (hbit) {
|
|
key = key.substring(0, key.length - 1);
|
|
from = 4;
|
|
}
|
|
|
|
size = 1;
|
|
}
|
|
else if (FieldInfo[key]) {
|
|
// Sizes of some standard fields can be assigned automatically.
|
|
size = FieldInfo[key].bits;
|
|
bits = size;
|
|
|
|
if (fieldMap["'" + key])
|
|
from = 1;
|
|
}
|
|
else if (key.length === 1) {
|
|
// Sizes of one-letter fields (like 'U', 'F', etc...) is 1 if not specified.
|
|
size = 1;
|
|
bits = 1;
|
|
}
|
|
else {
|
|
FAIL(`Couldn't recognize the size of '${key}' in opcode '${s}'`);
|
|
}
|
|
|
|
if (dup[key_] === true) {
|
|
bits = 0;
|
|
lbit = 0;
|
|
hbit = 0;
|
|
}
|
|
else {
|
|
dup[key_] = true;
|
|
}
|
|
}
|
|
|
|
let field = fields[key];
|
|
if (!field) {
|
|
field = {
|
|
index: opcodeIndex,
|
|
values: [],
|
|
bits: 0,
|
|
mask: 0,
|
|
lbit: 0,
|
|
hbit: 0 // Only 1 if a single quote (') was used.
|
|
}
|
|
fields[key] = field;
|
|
}
|
|
|
|
if (from === -1)
|
|
from = field.bits;
|
|
|
|
field.mask |= mask;
|
|
field.bits += bits;
|
|
field.lbit += lbit;
|
|
field.hbit += hbit;
|
|
field.values.push({
|
|
index: opcodeIndex,
|
|
from: from,
|
|
size: size
|
|
});
|
|
|
|
opcodeIndex += size;
|
|
}
|
|
}
|
|
|
|
for (let i = 0; i < pattern.length; i++)
|
|
if (pattern[i] === 'U')
|
|
pattern[i] = "_";
|
|
|
|
// Normalize all fields.
|
|
for (let key in fields) {
|
|
const field = fields[key];
|
|
|
|
// There should be either number of bits or mask, there shouldn't be both.
|
|
if (!field.bits && !field.mask)
|
|
FAIL(`Part '${key}' of opcode '${s}' contains neither size nor mask`);
|
|
|
|
if (field.bits && field.mask)
|
|
FAIL(`Part '${key}' of opcode '${s}' contains both size and mask`);
|
|
|
|
if (field.bits)
|
|
field.mask = ((1 << field.bits) - 1);
|
|
else if (field.mask)
|
|
field.bits = 32 - Math.clz32(field.mask);
|
|
|
|
// Handle field that used single-quote.
|
|
if (field.lbit) {
|
|
field.mask = (field.mask << 1) | 0x1;
|
|
field.bits++;
|
|
}
|
|
|
|
if (field.hbit) {
|
|
field.mask |= 1 << field.bits;
|
|
field.bits++;
|
|
}
|
|
|
|
const op = this.operandByName(key);
|
|
if (op && op.isImm())
|
|
op.immSize = field.bits;
|
|
}
|
|
|
|
// Check if the opcode value has the correct number of bits.
|
|
if (opcodeIndex !== 32)
|
|
FAIL(`The number of bits '${opcodeIndex}' used by the opcode '${s}' doesn't match 32`);
|
|
this.opcodeValue = normalizeNumber(opcodeValue);
|
|
}
|
|
|
|
_assignSpecificAttribute(key, value) {
|
|
switch (key) {
|
|
case "it": {
|
|
const values = String(value).split("|");
|
|
for (let i = 0; i < values.length; i++) {
|
|
const value = values[i];
|
|
switch (value) {
|
|
case "in" : this.it.IN = true; break;
|
|
case "out" : this.it.OUT = true; break;
|
|
case "any" : this.it.IN = true;
|
|
this.it.OUT = true; break;
|
|
case "last": this.it.LAST = true; break;
|
|
case "def" : this.it.DEF = true; break;
|
|
default:
|
|
this.report(`${this.name}: Unhandled IT value '${value}'`);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
_postProcess() {}
|
|
|
|
operandByName(name) {
|
|
const operands = this.operands;
|
|
for (let i = 0; i < operands.length; i++) {
|
|
const op = operands[i];
|
|
if (op.name === name)
|
|
return op;
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
arm.Instruction = Instruction;
|
|
|
|
// asmdb.aarch64.ISA
|
|
// =================
|
|
|
|
function mergeGroupData(data, group) {
|
|
for (let k in group) {
|
|
switch (k) {
|
|
case "group":
|
|
case "data":
|
|
break;
|
|
|
|
case "ext":
|
|
data[k] = (data[k] ? data[k] + " " : "") + group[k];
|
|
break;
|
|
|
|
default:
|
|
if (data[k] === undefined)
|
|
data[k] = group[k]
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
class ISA extends base.ISA {
|
|
constructor(data) {
|
|
super(data);
|
|
this.addData(data || NONE);
|
|
}
|
|
|
|
_addInstructions(groups) {
|
|
for (let group of groups) {
|
|
for (let inst of group.data) {
|
|
const sgn = Utils.splitInstructionSignature(inst.inst);
|
|
const data = MapUtils.cloneExcept(inst, { "inst": true });
|
|
|
|
mergeGroupData(data, group)
|
|
|
|
for (let j = 0; j < sgn.names.length; j++) {
|
|
data.name = sgn.names[j];
|
|
data.operands = sgn.operands;
|
|
if (j > 0)
|
|
data.aliasOf = sgn.names[0];
|
|
this._addInstruction(new Instruction(this, data));
|
|
}
|
|
}
|
|
}
|
|
|
|
return this;
|
|
}
|
|
}
|
|
arm.ISA = ISA;
|
|
|
|
}).apply(this, typeof module === "object" && module && module.exports
|
|
? [module, "exports"] : [this.asmdb || (this.asmdb = {}), "aarch64"]);
|