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Some performance tweaks

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This commit is contained in:
Jeff Parsons 2015-01-31 16:10:16 -08:00 • committed by jeffpar
commit da58c2aeaf
11 changed files with 19094 additions and 1478 deletions
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127
modules/pcjs/bin/x86gen.js
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@ -57,10 +57,11 @@ try {
* See p. 3-41 of "The 8086 Book" for more details.
*/
var f16Only = true;
var aDst = ["Mem", "Reg"];
var aSize = ["Byte", "Word"];
var aOpPrefix = ["B", "W"];
var aAddrPrefix = ["", "32"];
var aAddrPrefix = [f16Only? "" : "16", "32"];
var aDisp = ["8", "16"];
/*
@ -215,12 +216,17 @@ else {
var sOpMods, sOpMod, sContainer;
print('"use strict";\n');
print("var X86ModB = {};");
print("var X86ModW = {};");
print("var X86ModB32 = {};");
print("var X86ModW32 = {};\n");
if (f16Only) {
print("var X86ModB = {};");
print("var X86ModW = {};\n");
} else {
print("var X86ModB16 = {};");
print("var X86ModW16 = {};");
print("var X86ModB32 = {};");
print("var X86ModW32 = {};\n");
}
for (var a = 0; a <= 1 && !sError; a++) {
for (var a = 0; a <= (f16Only? 0 : 1) && !sError; a++) {
for (w = 0; w <= 1 && !sError; w++) {
@ -259,13 +265,14 @@ else {
}
}
sContainer = "X86ModSIB" + ".aOpModSIB";
print(sContainer + " = [");
for (var sib = 0x00; sib <= 0xff && !sError; sib++) {
genSIB(sib);
if (!f16Only) {
sContainer = "X86ModSIB" + ".aOpModSIB";
print(sContainer + " = [");
for (var sib = 0x00; sib <= 0xff && !sError; sib++) {
genSIB(sib);
}
print("];\n");
}
print("];\n");
if (sEAFuncs) {
print("var X86Mods = {\n" + sEAFuncs + "};\n");
@ -329,26 +336,26 @@ function genMode(a, d, w, mrm, sGroup, sRO) {
sRegBTLo = "this.backTrack.btiBL";
break;
case 4:
sRegGet = "(this.regEAX >> 8) & 0xff";
sRegSet = "this.regEAX = (this.regEAX & ~0xff00) | ";
sRegGet = f16Only? "this.regEAX >> 8" : "(this.regEAX >> 8) & 0xff";
sRegSet = f16Only? "this.regEAX = (this.regEAX & 0xff) | " : "this.regEAX = (this.regEAX & ~0xff00) | ";
sRegSetEnd = " << 8";
sRegBTLo = "this.backTrack.btiAH";
break;
case 5:
sRegGet = "(this.regECX >> 8) & 0xff";
sRegSet = "this.regECX = (this.regECX & ~0xff00) | ";
sRegGet = f16Only? "this.regECX >> 8" : "(this.regECX >> 8) & 0xff";
sRegSet = f16Only? "this.regECX = (this.regECX & 0xff) | " : "this.regECX = (this.regECX & ~0xff00) | ";
sRegSetEnd = " << 8";
sRegBTLo = "this.backTrack.btiCH";
break;
case 6:
sRegGet = "(this.regEDX >> 8) & 0xff";
sRegSet = "this.regEDX = (this.regEDX & ~0xff00) | ";
sRegGet = f16Only? "this.regEDX >> 8" : "(this.regEDX >> 8) & 0xff";
sRegSet = f16Only? "this.regEDX = (this.regEDX & 0xff) | " : "this.regEDX = (this.regEDX & ~0xff00) | ";
sRegSetEnd = " << 8";
sRegBTLo = "this.backTrack.btiDH";
break;
case 7:
sRegGet = "(this.regEBX >> 8) & 0xff";
sRegSet = "this.regEBX = (this.regEBX & ~0xff00) | ";
sRegGet = f16Only? "this.regEBX >> 8" : "(this.regEBX >> 8) & 0xff";
sRegSet = f16Only? "this.regEBX = (this.regEBX & 0xff) | " : "this.regEBX = (this.regEBX & ~0xff00) | ";
sRegSetEnd = " << 8";
sRegBTLo = "this.backTrack.btiBH";
break;
@ -360,50 +367,50 @@ function genMode(a, d, w, mrm, sGroup, sRO) {
else {
switch (reg) {
case 0:
sRegGet = "this.regEAX & this.dataMask";
sRegSet = "this.regEAX = (this.regEAX & ~this.dataMask) | ";
sRegGet = f16Only? "this.regEAX" : "this.regEAX & this.dataMask";
sRegSet = f16Only? "" : "this.regEAX = (this.regEAX & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiAL";
sRegBTHi = "this.backTrack.btiAH";
break;
case 1:
sRegGet = "this.regECX & this.dataMask";
sRegSet = "this.regECX = (this.regECX & ~this.dataMask) | ";
sRegGet = f16Only? "this.regECX" : "this.regECX & this.dataMask";
sRegSet = f16Only? "" : "this.regECX = (this.regECX & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiCL";
sRegBTHi = "this.backTrack.btiCH";
break;
case 2:
sRegGet = "this.regEDX & this.dataMask";
sRegSet = "this.regEDX = (this.regEDX & ~this.dataMask) | ";
sRegGet = f16Only? "this.regEDX" : "this.regEDX & this.dataMask";
sRegSet = f16Only? "" : "this.regEDX = (this.regEDX & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiDL";
sRegBTHi = "this.backTrack.btiDH";
break;
case 3:
sRegGet = "this.regEBX & this.dataMask";
sRegSet = "this.regEBX = (this.regEBX & ~this.dataMask) | ";
sRegGet = f16Only? "this.regEBX" : "this.regEBX & this.dataMask";
sRegSet = f16Only? "" : "this.regEBX = (this.regEBX & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiBL";
sRegBTHi = "this.backTrack.btiBH";
break;
case 4:
sRegGet = "this.regESP & this.dataMask";
sRegSet = "this.regESP = (this.regESP & ~this.dataMask) | ";
sRegGet = f16Only? "this.regESP" : "this.regESP & this.dataMask";
sRegSet = f16Only? "" : "this.regESP = (this.regESP & ~this.dataMask) | ";
sRegBTLo = "X86.BACKTRACK.SP_LO";
sRegBTHi = "X86.BACKTRACK.SP_HI";
break;
case 5:
sRegGet = "this.regEBP & this.dataMask";
sRegSet = "this.regEBP = (this.regEBP & ~this.dataMask) | ";
sRegGet = f16Only? "this.regEBP" : "this.regEBP & this.dataMask";
sRegSet = f16Only? "" : "this.regEBP = (this.regEBP & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiBPLo";
sRegBTHi = "this.backTrack.btiBPHi";
break;
case 6:
sRegGet = "this.regESI & this.dataMask";
sRegSet = "this.regESI = (this.regESI & ~this.dataMask) | ";
sRegGet = f16Only? "this.regESI" : "this.regESI & this.dataMask";
sRegSet = f16Only? "" : "this.regESI = (this.regESI & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiSILo";
sRegBTHi = "this.backTrack.btiSIHi";
break;
case 7:
sRegGet = "this.regEDI & this.dataMask";
sRegSet = "this.regEDI = (this.regEDI & ~this.dataMask) | ";
sRegGet = f16Only? "this.regEDI" : "this.regEDI & this.dataMask";
sRegSet = f16Only? "" : "this.regEDI = (this.regEDI & ~this.dataMask) | ";
sRegBTLo = "this.backTrack.btiDILo";
sRegBTHi = "this.backTrack.btiDIHi";
break;
@ -604,26 +611,26 @@ function genMode(a, d, w, mrm, sGroup, sRO) {
sModRegBTLo = "this.backTrack.btiBL";
break;
case 4:
sModRegGet = "(this.regEAX >> 8) & 0xff";
sModRegSet = "this.regEAX = (this.regEAX & ~0xff00) | ";
sModRegGet = f16Only? "(this.regEAX >> 8)" : "(this.regEAX >> 8) & 0xff";
sModRegSet = f16Only? "this.regEAX = (this.regEAX & 0xff) | " : "this.regEAX = (this.regEAX & ~0xff00) | ";
sModRegSetEnd = " << 8";
sModRegBTLo = "this.backTrack.btiAH";
break;
case 5:
sModRegGet = "(this.regECX >> 8) & 0xff";
sModRegSet = "this.regECX = (this.regECX & ~0xff00) | ";
sModRegGet = f16Only? "(this.regECX >> 8)" : "(this.regECX >> 8) & 0xff";
sModRegSet = f16Only? "this.regECX = (this.regECX & 0xff) | " : "this.regECX = (this.regECX & ~0xff00) | ";
sModRegSetEnd = " << 8";
sModRegBTLo = "this.backTrack.btiCH";
break;
case 6:
sModRegGet = "(this.regEDX >> 8) & 0xff";
sModRegSet = "this.regEDX = (this.regEDX & ~0xff00) | ";
sModRegGet = f16Only? "(this.regEDX >> 8)" : "(this.regEDX >> 8) & 0xff";
sModRegSet = f16Only? "this.regEDX = (this.regEDX & 0xff) | " : "this.regEDX = (this.regEDX & ~0xff00) | ";
sModRegSetEnd = " << 8";
sModRegBTLo = "this.backTrack.btiDH";
break;
case 7:
sModRegGet = "(this.regEBX >> 8) & 0xff";
sModRegSet = "this.regEBX = (this.regEBX & ~0xff00) | ";
sModRegGet = f16Only? "(this.regEBX >> 8)" : "(this.regEBX >> 8) & 0xff";
sModRegSet = f16Only? "this.regEBX = (this.regEBX & 0xff) | " : "this.regEBX = (this.regEBX & ~0xff00) | ";
sModRegSetEnd = " << 8";
sModRegBTLo = "this.backTrack.btiBH";
break;
@ -635,50 +642,50 @@ function genMode(a, d, w, mrm, sGroup, sRO) {
else {
switch (r_m) {
case 0:
sModRegGet = "this.regEAX & this.dataMask";
sModRegSet = "this.regEAX = (this.regEAX & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regEAX" : "this.regEAX & this.dataMask";
sModRegSet = f16Only? "" : "this.regEAX = (this.regEAX & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiAL";
sModRegBTHi = "this.backTrack.btiAH";
break;
case 1:
sModRegGet = "this.regECX & this.dataMask";
sModRegSet = "this.regECX = (this.regECX & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regECX" : "this.regECX & this.dataMask";
sModRegSet = f16Only? "" : "this.regECX = (this.regECX & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiCL";
sModRegBTHi = "this.backTrack.btiCH";
break;
case 2:
sModRegGet = "this.regEDX & this.dataMask";
sModRegSet = "this.regEDX = (this.regEDX & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regEDX" : "this.regEDX & this.dataMask";
sModRegSet = f16Only? "" : "this.regEDX = (this.regEDX & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiDL";
sModRegBTHi = "this.backTrack.btiDH";
break;
case 3:
sModRegGet = "this.regEBX & this.dataMask";
sModRegSet = "this.regEBX = (this.regEBX & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regEBX" : "this.regEBX & this.dataMask";
sModRegSet = f16Only? "" : "this.regEBX = (this.regEBX & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiBL";
sModRegBTHi = "this.backTrack.btiBH";
break;
case 4:
sModRegGet = "this.regESP & this.dataMask";
sModRegSet = "this.regESP = (this.regESP & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regESP" : "this.regESP & this.dataMask";
sModRegSet = f16Only? "" : "this.regESP = (this.regESP & ~this.dataMask) | ";
sModRegBTLo = "X86.BACKTRACK.SP_LO";
sModRegBTHi = "X86.BACKTRACK.SP_HI";
break;
case 5:
sModRegGet = "this.regEBP & this.dataMask";
sModRegSet = "this.regEBP = (this.regEBP & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regEBP" : "this.regEBP & this.dataMask";
sModRegSet = f16Only? "" : "this.regEBP = (this.regEBP & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiBPLo";
sModRegBTHi = "this.backTrack.btiBPHi";
break;
case 6:
sModRegGet = "this.regESI & this.dataMask";
sModRegSet = "this.regESI = (this.regESI & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regESI" : "this.regESI & this.dataMask";
sModRegSet = f16Only? "" : "this.regESI = (this.regESI & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiSILo";
sModRegBTHi = "this.backTrack.btiSIHi";
break;
case 7:
sModRegGet = "this.regEDI & this.dataMask";
sModRegSet = "this.regEDI = (this.regEDI & ~this.dataMask) | ";
sModRegGet = f16Only? "this.regEDI" : "this.regEDI & this.dataMask";
sModRegSet = f16Only? "" : "this.regEDI = (this.regEDI & ~this.dataMask) | ";
sModRegBTLo = "this.backTrack.btiDILo";
sModRegBTHi = "this.backTrack.btiDIHi";
break;