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Fixed Debug exceptions that occur during REPeated instructions

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This commit is contained in:
Jeff Parsons 2015-08-04 07:59:49 -07:00
commit 7255ab59a5
1 changed files with 6 additions and 1 deletions
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7
modules/pcjs/lib/x86func.js
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@ -3747,6 +3747,11 @@ X86.fnFault = function(nFault, nError, fHalt, nCycles)
if (fDispatch) { if (fDispatch) {
this.nFault = nFault; this.nFault = nFault;
X86.fnINT.call(this, nFault, nError, nCycles || 0); X86.fnINT.call(this, nFault, nError, nCycles || 0);
/*
* REP'eated instructions that want to rewind regLIP to opLIP used to screw up this dispatch,
* so now we slip the new regLIP into opLIP, effectively turning their action into a no-op.
*/
this.opLIP = this.regLIP;
} }
/* /*
@ -3841,7 +3846,7 @@ X86.fnFaultMessage = function(nFault, nError, fHalt)
fHalt = false; fHalt = false;
} }
} else { } else {
if (nFault == X86.EXCEPTION.NP_FAULT && bOpcode == 0x8E) { if (MAXDEBUG && nFault == X86.EXCEPTION.NP_FAULT && bOpcode == 0x8E) {
fHalt = true; fHalt = true;
} }
} }