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Added support for DRn and TRn instructions (although they're effectively NOPs for now)

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This commit is contained in:
Jeff Parsons 2015-07-27 11:29:57 -07:00
commit 2150744668
167 changed files with 9213 additions and 2029 deletions
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88
modules/pcjs/lib/x86cpu.js
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@ -1103,6 +1103,82 @@ X86CPU.prototype.reset = function()
if (SAMPLER) this.iSampleNext = this.iSampleFreq = this.iSampleSkip = 0;
};
/**
* getReg(i)
*
* @this {X86CPU}
* @param {number} i (0-7)
* @return {number}
*/
X86CPU.prototype.getReg = function(i)
{
var reg;
switch(i) {
case 0x0:
reg = this.regEAX;
break;
case 0x1:
reg = this.regECX;
break;
case 0x2:
reg = this.regEDX;
break;
case 0x3:
reg = this.regEBX;
break;
case 0x4:
reg = this.regESP;
break;
case 0x5:
reg = this.regEBP;
break;
case 0x6:
reg = this.regESI;
break;
case 0x7:
reg = this.regEDI;
break;
}
return reg;
};
/**
* setReg(i, reg)
*
* @this {X86CPU}
* @param {number} i (0-7)
* @param {number} reg
*/
X86CPU.prototype.setReg = function(i, reg)
{
switch(i) {
case 0x0:
this.regEAX = reg;
break;
case 0x1:
this.regECX = reg;
break;
case 0x2:
this.regEDX = reg;
break;
case 0x3:
this.regEBX = reg;
break;
case 0x4:
this.regESP = reg;
break;
case 0x5:
this.regEBP = reg;
break;
case 0x6:
this.regESI = reg;
break;
case 0x7:
this.regEDI = reg;
break;
}
};
/**
* resetRegs()
*
@ -1236,8 +1312,8 @@ X86CPU.prototype.resetRegs = function()
this.regCR1 = 0; // reserved
this.regCR2 = 0; // page fault linear address (PFLA)
this.regCR3 = 0; // page directory base register (PDBR)
this.aRegDR = new Array(8); // Debug Registers DR0-DR7
this.aRegTR = new Array(8); // Test Registers TR0-TR7
this.regDRn = [0,0,0,0,null,null,0,0]; // Debug Registers DR0-DR7 (DR4-DR5 are undefined)
this.regTRn = [null,null,null,null,null,null,0,0]; // Test Registers TR0-TR7 (TR0-TR5 are undefined)
this.segFS = new X86Seg(this, X86Seg.ID.DATA, "FS");
this.segGS = new X86Seg(this, X86Seg.ID.DATA, "GS");
this.disablePageBlocks();
@ -1666,8 +1742,8 @@ X86CPU.prototype.saveProtMode = function()
a.push(this.regCR1);
a.push(this.regCR2);
a.push(this.regCR3);
a.push(this.aRegDR);
a.push(this.aRegTR);
a.push(this.regDRn);
a.push(this.regTRn);
}
return a;
}
@ -1697,8 +1773,8 @@ X86CPU.prototype.restoreProtMode = function(a)
this.regCR1 = a[8];
this.regCR2 = a[9];
this.regCR3 = a[10];
this.aRegDR = a[11];
this.aRegTR = a[12];
this.regDRn = a[11];
this.regTRn = a[12];
}
this.setProtMode();
}