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v1.19.4: I/O bug fixes (16-bit input could trash EAX, and support for true 16-bit/32-bit I/O was lacking)

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This commit is contained in:
Jeff Parsons 2015-09-08 21:19:18 -07:00
commit cea314d7e8
30 changed files with 9220 additions and 2210 deletions
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7
modules/pcjs/lib/x86cpu.js
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@ -3022,14 +3022,15 @@ X86CPU.prototype.setPS = function(regPS, cpl)
};
/**
* checkIOPM(port, nPorts)
* checkIOPM(port, nPorts, fInput)
*
* @this {X86CPU}
* @param {number} port (0x0000 to 0xffff)
* @param {number} nPorts (1 to 4)
* @param {boolean} [fInput] (true if input, false if output; output assumed if not specified)
* @return {boolean} true if allowed, false if not
*/
X86CPU.prototype.checkIOPM = function(port, nPorts)
X86CPU.prototype.checkIOPM = function(port, nPorts, fInput)
{
var bitsPorts = 0;
if (I386 && (this.regCR0 & X86.CR0.MSW.PE) && (this.nCPL > this.nIOPL || (this.regPS & X86.PS.VM)) && this.segTSS.addrIOPM) {
@ -3044,7 +3045,7 @@ X86CPU.prototype.checkIOPM = function(port, nPorts)
}
}
if (bitsPorts) {
if (this.messageEnabled(Messages.PORT)) this.printMessage("checkIOPM(" + str.toHexWord(port) + "," + nPorts + "): trapped", true, true);
if (this.messageEnabled(Messages.PORT)) this.printMessage("checkIOPM(" + str.toHexWord(port) + "," + nPorts + "," + (fInput? "input" : "output") + "): trapped", true, true);
X86.fnFault.call(this, X86.EXCEPTION.GP_FAULT, 0, false);
return false;
}