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Baby steps

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This commit is contained in:
Jeff Parsons 2015-02-02 14:36:30 -08:00 • committed by jeffpar
commit 2cd13b2058
11 changed files with 2808 additions and 2743 deletions
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8
modules/pcjs/lib/x86help.js
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@ -64,7 +64,7 @@ var X86Help = {
* @return {number}
*/
opHelpTESTb: function(dst, src) {
this.resultValue = this.resultParitySign = this.resultAuxOverflow = dst & src;
this.resultZeroCarry = 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);
this.opFlags |= X86.OPFLAG.NOWRITE;
@ -77,7 +77,7 @@ var X86Help = {
* @return {number}
*/
opHelpTESTw: function(dst, src) {
this.resultValue = this.resultParitySign = this.resultAuxOverflow = dst & src;
this.resultZeroCarry = 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);
this.opFlags |= X86.OPFLAG.NOWRITE;
@ -100,7 +100,7 @@ var X86Help = {
*/
opHelpIMUL8: function(dst, src) {
var result = ((src << 16) >> 16) * ((this.getIPByte() << 24) >> 24);
this.resultValue = this.resultAuxOverflow = this.resultParitySign = result;
this.resultZeroCarry = this.resultAuxOverflow = this.resultParitySign = result;
this.resultSize = X86.RESULT.SIZE_BYTE;
/*
* TODO: Look into a more efficient way of setting/synchronizing CF and OF; this code works,
@ -138,7 +138,7 @@ var X86Help = {
*/
opHelpIMUL16: function(dst, src) {
var result = ((src << 16) >> 16) * ((this.getIPWord() << 16) >> 16);
this.resultValue = this.resultAuxOverflow = this.resultParitySign = result;
this.resultZeroCarry = this.resultAuxOverflow = this.resultParitySign = result;
this.resultSize = X86.RESULT.SIZE_WORD;
/*
* TODO: Look into a more efficient way of setting/synchronizing CF and OF; this code works,