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Implemented 80286 LOADALL

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Jeff Parsons 2014-11-01 17:12:20 -07:00 • committed by jeffpar
commit 5dce2a1a23
31 changed files with 1831 additions and 1765 deletions
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25
my_modules/pcjs-client/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 (FASTDISABLE) this.setEAByte = this.setEAByteDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
if (EAFUNCS) this.setEAByte = this.setEAByteDisabled; else 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 (FASTDISABLE) this.setEAWord = this.setEAWordDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
if (EAFUNCS) this.setEAWord = this.setEAWordDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
return dst;
},
/**
@ -242,7 +242,7 @@ var X86Help = {
this.setIP(this.opEA - this.segCS.base);
X86Help.opHelpINT.call(this, X86.EXCEPTION.BOUND_ERR, null, 0);
}
if (FASTDISABLE) this.setEAByte = this.setEAByteDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
if (EAFUNCS) this.setEAByte = this.setEAByteDisabled; else this.opFlags |= X86.OPFLAG.NOWRITE;
return dst;
},
/**
@ -253,8 +253,8 @@ var X86Help = {
*/
opHelpARPL: function(dst, src) {
this.nStepCycles -= (10 + (this.regEA < 0? 0 : 1));
if ((dst & X86.SEL.LEVEL) < (src & X86.SEL.LEVEL)) {
dst = (dst & ~X86.SEL.LEVEL) | (src & X86.SEL.LEVEL);
if ((dst & X86.SEL.RPL) < (src & X86.SEL.RPL)) {
dst = (dst & ~X86.SEL.RPL) | (src & X86.SEL.RPL);
this.setZF();
return dst;
}
@ -277,7 +277,7 @@ var X86Help = {
* if we need a special check for them.
*/
if (this.segVER.load(src, true) >= 0) {
if (this.segVER.level >= (this.segCS.sel & X86.SEL.LEVEL) && this.segVER.level >= (src & X86.SEL.LEVEL)) {
if (this.segVER.dpl >= this.segCS.cpl && this.segVER.dpl >= (src & X86.SEL.RPL)) {
this.setZF();
return this.segVER.acc & X86.DESC.ACC.MASK;
}
@ -288,10 +288,13 @@ var X86Help = {
/**
* @this {X86CPU}
* @param {number} dst
* @param {number} src
* @param {number} src (the selector)
* @return {number}
*/
opHelpLSL: function(dst, src) {
/*
* TODO: Is this an invalid operation if regEAWrite is set? dst is required to be a register.
*/
this.nStepCycles -= (14 + (this.regEA < 0? 0 : 2));
/*
* Currently, segVER.load() will return an error only if the selector is beyond the bounds of the
@ -301,8 +304,8 @@ var X86Help = {
* are there any other instructions that were, um, less explicit but also require a non-null selector?
*/
if ((src & X86.SEL.MASK) && this.segVER.load(src, true) >= 0) {
var fConforming = ((this.segVER.acc & X86.DESC.ACC.TYPE.CODE_CONFORMING) == X86.DESC.ACC.TYPE.CODE_CONFORMING);
if ((fConforming || this.segVER.level >= (this.segCS.sel & X86.SEL.LEVEL)) && this.segVER.level >= (src & X86.SEL.LEVEL)) {
var fConforming = ((this.segVER.acc & X86.DESC.ACC.TYPE.CODE_CONFORMING_EXECONLY) == X86.DESC.ACC.TYPE.CODE_CONFORMING_EXECONLY);
if ((fConforming || this.segVER.dpl >= this.segCS.cpl) && this.segVER.dpl >= (src & X86.SEL.RPL)) {
this.setZF();
return this.segVER.limit;
}
@ -465,8 +468,9 @@ var X86Help = {
* @this {X86CPU}
* @param {number} nFault
* @param {number} [nError]
* @param {boolean} [fHalt] will halt the CPU if true *and* a Debugger is loaded
*/
opHelpFault: function(nFault, nError) {
opHelpFault: function(nFault, nError, fHalt) {
if (DEBUGGER && this.dbg) {
/*
* NOTE: By using Debugger.message(), we have the option of setting "m halt on" and halting on messages like this.
@ -474,6 +478,7 @@ var X86Help = {
if (this.dbg.messageEnabled(Debugger.MESSAGE_CPU)) {
this.dbg.message("Fault 0x" + str.toHexByte(nFault) + (nError != null? " (0x" + str.toHexWord(nError) + ")" : "") + " on opcode 0x" + str.toHexByte(this.bus.getByteDirect(this.regEIP)) + " at " + str.toHexAddr(this.regIP, this.segCS.sel));
}
if (fHalt) this.haltCPU();
}
if (this.model >= X86.MODEL_80186) {
this.setIP(this.opEA - this.segCS.base);