mirror of
https://github.com/asmjit/asmjit.git
synced 2025-12-17 12:34:35 +03:00
3fcd65cf80
- Compiler no longer works on its own, it requires Assembler. - Labels created by Assembler and Compiler now share their IDs, so they can be used nearly interchangeably without weird side-effects and hacks. - Renamed getError() and setError() to getLastError() and setLastError(). - Renamed compiler nodes to "HL" nodes (preparation for HLStream). - Renamed FuncConv to CallConv. - Function calling convention is now part of FuncPrototype. - Added a possibility to align by inserting zeros (kAlignZero) - Fixed assertion in X86Compiler that didn't like unhandled function argument(s). - Added Compiler::embedConstPool() helper, which can be handy if you use your own ConstPool. - Code refactorization and other minor changes. - CpuTicks::now() renamed to Utils::getTickCount(). - error.h merged with globals.h - Documentation updates related to recent API changes.
460 lines
12 KiB
JavaScript
460 lines
12 KiB
JavaScript
// [GenDefs]
|
|
//
|
|
// The purpose of this script is to fetch all instructions' names into a single
|
|
// string and to optimize common patterns that appear in instruction data. It
|
|
// prevents relocation of small strings (instruction names) that has to be done
|
|
// by a linker to make all pointers the binary application/library uses valid.
|
|
// This approach decreases the final size of AsmJit binary and relocation data.
|
|
|
|
"use strict";
|
|
|
|
var fs = require("fs");
|
|
var hasOwn = Object.prototype.hasOwnProperty;
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// [Utilities]
|
|
// ----------------------------------------------------------------------------
|
|
|
|
function upFirst(s) {
|
|
if (!s) return "";
|
|
return s[0].toUpperCase() + s.substr(1);
|
|
}
|
|
|
|
function trimLeft(s) {
|
|
return s.replace(/^\s+/, "");
|
|
}
|
|
|
|
function padLeft(s, n) {
|
|
while (s.length < n)
|
|
s += " ";
|
|
return s;
|
|
}
|
|
|
|
function inject(s, start, end, code) {
|
|
var iStart = s.indexOf(start);
|
|
var iEnd = s.indexOf(end);
|
|
|
|
if (iStart === -1)
|
|
throw new Error("Couldn't locate start mark.");
|
|
|
|
if (iEnd === -1)
|
|
throw new Error("Couldn't locate end mark.");
|
|
|
|
return s.substr(0, iStart + start.length) + code + s.substr(iEnd);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// [IndexedString]
|
|
// ----------------------------------------------------------------------------
|
|
|
|
var IndexedString = function() {
|
|
this.map = {};
|
|
this.size = -1;
|
|
this.array = [];
|
|
};
|
|
|
|
IndexedString.prototype.add = function(s) {
|
|
this.map[s] = -1;
|
|
};
|
|
|
|
IndexedString.prototype.index = function() {
|
|
var map = this.map;
|
|
var array = this.array;
|
|
|
|
var partialMap = {};
|
|
var k, kp;
|
|
var i, len;
|
|
|
|
// Create a map that will contain all keys and partial keys.
|
|
for (k in map) {
|
|
if (!k) {
|
|
partialMap[k] = k;
|
|
}
|
|
else {
|
|
for (i = 0, len = k.length; i < len; i++) {
|
|
var kp = k.substr(i);
|
|
if (!hasOwn.call(partialMap, kp) || partialMap[kp].length < len)
|
|
partialMap[kp] = k;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Create an array that will only contain keys that are needed.
|
|
for (k in map) {
|
|
if (partialMap[k] === k)
|
|
array.push(k);
|
|
}
|
|
array.sort();
|
|
|
|
// Create valid offsets to the `array`.
|
|
var offMap = {};
|
|
var offset = 0;
|
|
|
|
for (i = 0, len = array.length; i < len; i++) {
|
|
k = array[i];
|
|
|
|
offMap[k] = offset;
|
|
offset += k.length + 1;
|
|
}
|
|
this.size = offset;
|
|
|
|
// Assign valid offsets to `map`.
|
|
for (kp in map) {
|
|
k = partialMap[kp];
|
|
map[kp] = offMap[k] + k.length - kp.length;
|
|
}
|
|
|
|
/*
|
|
(function() {
|
|
// Testing code to experiment with eliminating suffixes from instruction names.
|
|
var suffixList = [
|
|
"ss", "ps", "sd", "pd",
|
|
"bw", "bd", "bq",
|
|
"ww", "wd", "wq",
|
|
"dq", "b", "w", "d", "q"
|
|
];
|
|
var reducedMap = {};
|
|
var reducedSize = 0;
|
|
|
|
var xMap = {};
|
|
var xArr = [];
|
|
|
|
for (i = 0, len = array.length; i < len; i++) {
|
|
k = array[i];
|
|
|
|
var suffix = null;
|
|
var after = k;
|
|
|
|
for (var j = 0; j < suffixList.length; j++) {
|
|
suffix = suffixList[j];
|
|
if (k.lastIndexOf(suffix) === k.length - suffix.length) {
|
|
after = k.substr(0, k.length - suffix.length);
|
|
break;
|
|
}
|
|
}
|
|
|
|
reducedMap[after] = true;
|
|
}
|
|
|
|
// Testing code to get which suffixes are the most used.
|
|
for (k in map) {
|
|
for (i = 1; i < k.length; i++) {
|
|
var xKey = k.substr(i);
|
|
if (hasOwn.call(xMap, xKey)) {
|
|
xMap[xKey]++;
|
|
}
|
|
else {
|
|
xMap[xKey] = 1;
|
|
xArr.push(xKey);
|
|
}
|
|
}
|
|
}
|
|
|
|
xArr.sort(function(a, b) {
|
|
return xMap[a] - xMap[b];
|
|
});
|
|
for (i = 0; i < xArr.length; i++) {
|
|
console.log(xArr[i] + " " + xMap[xArr[i]]);
|
|
}
|
|
|
|
for (k in reducedMap)
|
|
reducedSize += k.length + 1;
|
|
console.log("ReducedSize=" + reducedSize);
|
|
})();
|
|
*/
|
|
};
|
|
|
|
IndexedString.prototype.format = function(indent) {
|
|
if (this.size === -1)
|
|
throw new Error("IndexedString - not indexed yet, call index()");
|
|
|
|
var s = "";
|
|
var array = this.array;
|
|
|
|
for (var i = 0; i < array.length; i++) {
|
|
s += indent + "\"" + array[i];
|
|
s += (i !== array.length - 1) ? "\\0\"" : "\";";
|
|
s += "\n";
|
|
}
|
|
|
|
return s;
|
|
};
|
|
|
|
IndexedString.prototype.getSize = function() {
|
|
if (this.size === -1)
|
|
throw new Error("IndexedString - not indexed yet, call index()");
|
|
return this.size;
|
|
};
|
|
|
|
IndexedString.prototype.getIndex = function(k) {
|
|
if (this.size === -1)
|
|
throw new Error("IndexedString - not indexed yet, call index()");
|
|
|
|
if (!hasOwn.call(this.map, k))
|
|
throw new Error("IndexedString - key '" + k + "' not found.");
|
|
|
|
return this.map[k];
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// [Database]
|
|
// ----------------------------------------------------------------------------
|
|
|
|
var Database = function() {
|
|
this.instMap = {};
|
|
this.instNames = new IndexedString();
|
|
this.instAlpha = new Array(26);
|
|
|
|
this.extendedData = [];
|
|
this.extendedMap = {};
|
|
};
|
|
|
|
Database.prototype.add = function(name, id, extendedData) {
|
|
this.instMap[name] = {
|
|
id : id, // Instruction ID.
|
|
nameIndex : -1, // Instruction name-index.
|
|
extendedData : extendedData,
|
|
extendedIndex : ""
|
|
};
|
|
this.instNames.add(name);
|
|
};
|
|
|
|
Database.prototype.index = function() {
|
|
var instMap = this.instMap;
|
|
var instNames = this.instNames;
|
|
var instAlpha = this.instAlpha;
|
|
|
|
var extendedData = this.extendedData;
|
|
var extendedMap = this.extendedMap;
|
|
|
|
instNames.index();
|
|
|
|
for (var name in instMap) {
|
|
var inst = instMap[name];
|
|
|
|
var nameIndex = instNames.getIndex(name);
|
|
var extendedIndex = extendedMap[inst.extendedData];
|
|
|
|
if (typeof extendedIndex !== "number") {
|
|
extendedIndex = extendedData.length;
|
|
extendedMap[inst.extendedData] = extendedIndex;
|
|
extendedData.push(inst.extendedData);
|
|
}
|
|
|
|
inst.nameIndex = nameIndex;
|
|
inst.extendedIndex = extendedIndex;
|
|
|
|
var aIndex = name.charCodeAt(0) - 'a'.charCodeAt(0);
|
|
if (aIndex < 0 || aIndex >= 26)
|
|
throw new Error("Alphabetical index error");
|
|
|
|
if (instAlpha[aIndex] === undefined)
|
|
instAlpha[aIndex] = inst.id;
|
|
}
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// [Generate]
|
|
// ----------------------------------------------------------------------------
|
|
|
|
var decToHex = function(n, nPad) {
|
|
var hex = Number(n < 0 ? 0x100000000 + n : n).toString(16);
|
|
while (nPad > hex.length)
|
|
hex = "0" + hex;
|
|
return "0x" + hex.toUpperCase();
|
|
};
|
|
|
|
var getEFlagsMask = function(eflags, passing) {
|
|
var msk = 0x0;
|
|
var bit = 0x1;
|
|
|
|
for (var i = 0; i < 8; i++, bit <<= 1) {
|
|
if (passing.indexOf(eflags[i]) !== -1)
|
|
msk |= bit;
|
|
}
|
|
|
|
return msk;
|
|
};
|
|
|
|
var generate = function(fileName, arch) {
|
|
var Arch = upFirst(arch);
|
|
var oldData = fs.readFileSync(fileName, "utf8").replace(/\r\n/g, "\n");
|
|
|
|
var data = oldData;
|
|
var code = "";
|
|
var disclaimer = "// Automatically generated, do not edit.\n";
|
|
|
|
var instCount = 0;
|
|
var sizeof_X86InstInfo = 8;
|
|
var sizeof_X86InstExtendedInfo = 24;
|
|
|
|
// Create database.
|
|
var db = new Database();
|
|
var re = new RegExp(
|
|
"INST\\(([A-Za-z0-9_]+)\\s*," + // [01] Id.
|
|
"\\s*\\\"([A-Za-z0-9_ ]*)\\\"\\s*," + // [02] Name.
|
|
"(.{20}[^,]*)," + // [03] Opcode[0].
|
|
"(.{20}[^,]*)," + // [04] Opcode[1].
|
|
"([^,]+)," + // [05] Encoding.
|
|
"([^,]+)," + // [06] IFLAGS.
|
|
"\\s*EF\\(([A-Z_]+)\\)\\s*," + // [07] EFLAGS.
|
|
"([^,]+)," + // [08] Write-Index.
|
|
"([^,]+)," + // [09] Write-Size.
|
|
"([^,]+)," + // [10] Operand-Flags[0].
|
|
"([^,]+)," + // [11] Operand-Flags[1].
|
|
"([^,]+)," + // [12] Operand-Flags[2].
|
|
"([^,]+)," + // [13] Operand-Flags[3].
|
|
"([^\\)]+)\\)", // [14] Operand-Flags[4].
|
|
"g");
|
|
|
|
var i, k, m;
|
|
var srcForm = "";
|
|
|
|
while (m = re.exec(data)) {
|
|
// Extract instruction ID and Name.
|
|
var id = m[1];
|
|
var name = m[2];
|
|
|
|
// Extract data that goes to the secondary table (X86InstExtendedInfo).
|
|
var opcode0 = trimLeft(m[3]);
|
|
var opcode1 = trimLeft(m[4]);
|
|
var encoding = trimLeft(m[5]);
|
|
var iflags = trimLeft(m[6]);
|
|
var eflags = m[7];
|
|
var writeIndex = trimLeft(m[8]);
|
|
var writeSize = trimLeft(m[9]);
|
|
var oflags0 = trimLeft(m[10]);
|
|
var oflags1 = trimLeft(m[11]);
|
|
var oflags2 = trimLeft(m[12]);
|
|
var oflags3 = trimLeft(m[13]);
|
|
var oflags4 = trimLeft(m[14]);
|
|
|
|
// Generate EFlags-In and EFlags-Out.
|
|
var eflagsIn = decToHex(getEFlagsMask(eflags, "RX" ), 2);
|
|
var eflagsOut = decToHex(getEFlagsMask(eflags, "WXU"), 2);
|
|
|
|
var extData =
|
|
encoding + ", " +
|
|
writeIndex + ", " +
|
|
writeSize + ", " +
|
|
eflagsIn + ", " +
|
|
eflagsOut + ", " +
|
|
"0" + ", " +
|
|
"{ " + oflags0 + ", " + oflags1 + ", " + oflags2 + ", " + oflags3 + ", " + oflags4 + " }, " +
|
|
iflags + ", " +
|
|
opcode1;
|
|
|
|
srcForm += " INST(" +
|
|
padLeft(id, 27) + ", " +
|
|
padLeft('"' + name + '"', 19) + ", " +
|
|
opcode0 + ", " +
|
|
opcode1 + ", " +
|
|
encoding + ", " +
|
|
iflags + ", " +
|
|
"EF(" + eflags + "), " +
|
|
writeIndex + ", " +
|
|
writeSize + ", " +
|
|
oflags0 + ", " +
|
|
oflags1 + ", " +
|
|
oflags2 + ", " +
|
|
oflags3 + ", " +
|
|
oflags4 + "),\n";
|
|
|
|
db.add(name, id, extData);
|
|
instCount++;
|
|
}
|
|
// fs.writeFileSync("srcform.cpp", srcForm, "utf8");
|
|
db.index();
|
|
|
|
var instDataSize = instCount * sizeof_X86InstInfo + db.extendedData.length * sizeof_X86InstExtendedInfo;
|
|
|
|
console.log("Number of Instructions : " + instCount);
|
|
console.log("Number of ExtInfo Rows : " + db.extendedData.length);
|
|
console.log("Instructions' Data Size: " + instDataSize);
|
|
console.log("Instructions' Names Size: " + db.instNames.getSize());
|
|
|
|
// Generate InstName[] string.
|
|
code += disclaimer;
|
|
code += "#if !defined(ASMJIT_DISABLE_NAMES)\n";
|
|
code += "const char _" + arch + "InstName[] =\n";
|
|
code += db.instNames.format(" ") + "\n";
|
|
|
|
// Generate AlphaIndex.
|
|
code += disclaimer;
|
|
code += "enum " + Arch + "InstAlphaIndex {\n";
|
|
code += " k" + Arch + "InstAlphaIndexFirst = 'a',\n";
|
|
code += " k" + Arch + "InstAlphaIndexLast = 'z',\n";
|
|
code += " k" + Arch + "InstAlphaIndexInvalid = 0xFFFF\n";
|
|
code += "};\n";
|
|
code += "\n";
|
|
|
|
code += disclaimer;
|
|
code += "static const uint16_t _" + arch + "InstAlphaIndex[26] = {\n";
|
|
for (i = 0; i < db.instAlpha.length; i++) {
|
|
var id = db.instAlpha[i];
|
|
code += " " + (id === undefined ? "0xFFFF" : id);
|
|
if (i !== db.instAlpha.length - 1)
|
|
code += ",";
|
|
code += "\n";
|
|
}
|
|
code += "};\n\n";
|
|
|
|
// Generate NameIndex.
|
|
code += disclaimer;
|
|
code += "enum " + Arch + "InstData_NameIndex {\n";
|
|
for (k in db.instMap) {
|
|
var inst = db.instMap[k];
|
|
code += " " + inst.id + "_NameIndex = " + inst.nameIndex + ",\n";
|
|
}
|
|
code = code.substr(0, code.length - 2) + "\n};\n";
|
|
code += "#endif // !ASMJIT_DISABLE_NAMES\n"
|
|
code += "\n";
|
|
|
|
// Generate ExtendedInfo.
|
|
code += disclaimer;
|
|
code += "const " + Arch + "InstExtendedInfo _" + arch + "InstExtendedInfo[] = {\n";
|
|
for (i = 0; i < db.extendedData.length; i++) {
|
|
code += " { " + db.extendedData[i] + " }";
|
|
if (i !== db.extendedData.length - 1)
|
|
code += ",";
|
|
code += "\n";
|
|
}
|
|
code += "};\n";
|
|
code += "\n";
|
|
|
|
code += disclaimer;
|
|
code += "enum " + Arch + "InstData_ExtendedIndex {\n";
|
|
for (k in db.instMap) {
|
|
var inst = db.instMap[k];
|
|
code += " " + inst.id + "_ExtendedIndex = " + inst.extendedIndex + ",\n";
|
|
}
|
|
code = code.substr(0, code.length - 2) + "\n};\n";
|
|
|
|
// Inject.
|
|
data = inject(data,
|
|
"// ${" + Arch + "InstData:Begin}\n",
|
|
"// ${" + Arch + "InstData:End}\n",
|
|
code);
|
|
|
|
// Save only if modified.
|
|
if (data !== oldData)
|
|
fs.writeFileSync(fileName, data, "utf8");
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// [Main]
|
|
// ----------------------------------------------------------------------------
|
|
|
|
var main = function(files) {
|
|
files.forEach(function(file) {
|
|
generate(file.name, file.arch);
|
|
});
|
|
};
|
|
|
|
main([
|
|
{
|
|
name: "../src/asmjit/x86/x86inst.cpp",
|
|
arch: "x86"
|
|
}
|
|
]);
|