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Remove EAFUNCS

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Jeff Parsons 2015-01-24 14:50:34 -08:00 • committed by jeffpar
commit 9ae860d28f
16 changed files with 2655 additions and 2727 deletions
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18
modules/pcjs/lib/x86help.js
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@ -67,7 +67,7 @@ var X86Help = {
this.resultValue = this.resultParitySign = this.resultAuxOverflow = dst & src;
this.resultSize = X86.RESULT.SIZE_BYTE;
this.nStepCycles -= (this.regEAWrite < 0? (this.regEA < 0? this.CYCLES.nOpCyclesTestRR : this.CYCLES.nOpCyclesTestRM) : this.CYCLES.nOpCyclesTestRM);
if (EAFUNCS) this.setEAByte = this.setEAByteDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
this.opFlags |= X86.OPFLAG.NOWRITE;
return dst;
},
/**
@ -80,7 +80,7 @@ var X86Help = {
this.resultValue = this.resultParitySign = this.resultAuxOverflow = dst & src;
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= (this.regEAWrite < 0? (this.regEA < 0? this.CYCLES.nOpCyclesTestRR : this.CYCLES.nOpCyclesTestRM) : this.CYCLES.nOpCyclesTestRM);
if (EAFUNCS) this.setEAWord = this.setEAWordDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
this.opFlags |= X86.OPFLAG.NOWRITE;
return dst;
},
/**
@ -251,7 +251,7 @@ var X86Help = {
this.setIP(this.opLIP - this.segCS.base);
X86Help.opHelpINT.call(this, X86.EXCEPTION.BOUND_ERR, null, 0);
}
if (EAFUNCS) this.setEAByte = this.setEAByteDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
this.opFlags |= X86.OPFLAG.NOWRITE;
return dst;
},
/**
@ -660,16 +660,14 @@ var X86Help = {
* executing, and since we currently don't do anything to interrupt that execution (eg, throw a
* JavaScript exception), we should shut off all further reads/writes for the current instruction.
*
* That's easy for any EA-based memory accesses (provided we're not using EAFUNCS): simply set both
* the NOREAD and NOWRITE flags. However, there are also direct, non-EA-based memory accesses to
* consider. A perfect example is opPUSHA(): if a GP fault occurs on any PUSH other than the last,
* a subsequent PUSH is likely to cause another fault, which we will misinterpret as a double-fault.
* That's easy for any EA-based memory accesses: simply set both the NOREAD and NOWRITE flags.
* However, there are also direct, non-EA-based memory accesses to consider. A perfect example is
* opPUSHA(): if a GP fault occurs on any PUSH other than the last, a subsequent PUSH is likely to
* cause another fault, which we will misinterpret as a double-fault.
*
* TODO: Throw a special JavaScript exception that cpu.js must intercept and quietly ignore.
*/
if (!EAFUNCS) {
this.opFlags &= ~(X86.OPFLAG.NOREAD | X86.OPFLAG.NOWRITE);
}
this.opFlags &= ~(X86.OPFLAG.NOREAD | X86.OPFLAG.NOWRITE);
},
/**
* opHelpFaultMessage()