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Restructured ModRM decoding

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This commit is contained in:
Jeff Parsons 2015-01-20 20:10:48 -08:00 • committed by jeffpar
commit 418f3bd603
13 changed files with 6175 additions and 6516 deletions
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269
modules/pcjs/lib/x86opxx.js
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@ -98,7 +98,7 @@ var X86OpXX = {
* op=0x05 (add AX,imm16)
*/
opADDAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpADDw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpADDw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpADDw() will deduct nOpCyclesArithRR, and for all CPUs through
* the 80286, we need deduct only one more cycle.
@ -174,7 +174,7 @@ var X86OpXX = {
* op=0x0D (or AX,imm16)
*/
opORAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpORw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpORw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpORw() will deduct nOpCyclesArithRR, and for all CPUs through
* the 80286, we need deduct only one more cycle.
@ -258,7 +258,7 @@ var X86OpXX = {
* op=0x15 (adc AX,imm16)
*/
opADCAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpADCw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpADCw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpADCw() will deduct nOpCyclesArithRR, and for all CPUs through
* the 80286, we need deduct only one more cycle.
@ -334,7 +334,7 @@ var X86OpXX = {
* op=0x1D (sbb AX,imm16)
*/
opSBBAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpSBBw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpSBBw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpSBBw() will deduct nOpCyclesArithRR, and for all CPUs through
* the 80286, we need deduct only one more cycle.
@ -410,7 +410,7 @@ var X86OpXX = {
* op=0x25 (and AX,imm16)
*/
opANDAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpANDw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpANDw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpANDw() will deduct nOpCyclesArithRR, and for all CPUs through
* the 80286, we need deduct only one more cycle.
@ -505,7 +505,7 @@ var X86OpXX = {
* op=0x2D (sub AX,imm16)
*/
opSUBAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpSUBw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpSUBw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpSUBw() will deduct nOpCyclesArithRR, and for all CPUs
* through the 80286, we need deduct only one more cycle.
@ -600,7 +600,7 @@ var X86OpXX = {
* op=0x35 (xor AX,imm16)
*/
opXORAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | X86Grps.opGrpXORw.call(this, this.regEAX & this.opMask, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | X86Grps.opGrpXORw.call(this, this.regEAX & this.opMask, this.getIPWord());
/*
* In the absence of any EA calculations, opGrpXORw() will deduct nOpCyclesArithRR, and for all CPUs through
* the 80286, we need deduct only one more cycle.
@ -759,7 +759,7 @@ var X86OpXX = {
*/
opINCAX: function() {
this.resultAuxOverflow = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.resultParitySign = this.regEAX + 1) & this.opMask;
this.regEAX = (this.regEAX & ~this.opMask) | (this.resultParitySign = this.regEAX + 1) & this.opMask;
this.resultValue = this.regEAX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -771,7 +771,7 @@ var X86OpXX = {
*/
opINCCX: function() {
this.resultAuxOverflow = this.regECX;
this.regECX = (this.regECX & this.opMaskClear) | (this.resultParitySign = this.regECX + 1) & this.opMask;
this.regECX = (this.regECX & ~this.opMask) | (this.resultParitySign = this.regECX + 1) & this.opMask;
this.resultValue = this.regECX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -783,7 +783,7 @@ var X86OpXX = {
*/
opINCDX: function() {
this.resultAuxOverflow = this.regEDX;
this.regEDX = (this.regEDX & this.opMaskClear) | (this.resultParitySign = this.regEDX + 1) & this.opMask;
this.regEDX = (this.regEDX & ~this.opMask) | (this.resultParitySign = this.regEDX + 1) & this.opMask;
this.resultValue = this.regEDX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -795,7 +795,7 @@ var X86OpXX = {
*/
opINCBX: function() {
this.resultAuxOverflow = this.regEBX;
this.regEBX = (this.regEBX & this.opMaskClear) | (this.resultParitySign = this.regEBX + 1) & this.opMask;
this.regEBX = (this.regEBX & ~this.opMask) | (this.resultParitySign = this.regEBX + 1) & this.opMask;
this.resultValue = this.regEBX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -807,7 +807,7 @@ var X86OpXX = {
*/
opINCSP: function() {
this.resultAuxOverflow = this.regESP;
this.regESP = (this.regESP & this.opMaskClear) | (this.resultParitySign = this.regESP + 1) & this.opMask;
this.regESP = (this.regESP & ~this.opMask) | (this.resultParitySign = this.regESP + 1) & this.opMask;
this.resultValue = this.regESP | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -819,7 +819,7 @@ var X86OpXX = {
*/
opINCBP: function() {
this.resultAuxOverflow = this.regEBP;
this.regEBP = (this.regEBP & this.opMaskClear) | (this.resultParitySign = this.regEBP + 1) & this.opMask;
this.regEBP = (this.regEBP & ~this.opMask) | (this.resultParitySign = this.regEBP + 1) & this.opMask;
this.resultValue = this.regEBP | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -831,7 +831,7 @@ var X86OpXX = {
*/
opINCSI: function() {
this.resultAuxOverflow = this.regESI;
this.regESI = (this.regESI & this.opMaskClear) | (this.resultParitySign = this.regESI + 1) & this.opMask;
this.regESI = (this.regESI & ~this.opMask) | (this.resultParitySign = this.regESI + 1) & this.opMask;
this.resultValue = this.regESI | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -843,7 +843,7 @@ var X86OpXX = {
*/
opINCDI: function() {
this.resultAuxOverflow = this.regEDI;
this.regEDI = (this.regEDI & this.opMaskClear) | (this.resultParitySign = this.regEDI + 1) & this.opMask;
this.regEDI = (this.regEDI & ~this.opMask) | (this.resultParitySign = this.regEDI + 1) & this.opMask;
this.resultValue = this.regEDI | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of INC takes 2 cycles on all CPUs
@ -855,7 +855,7 @@ var X86OpXX = {
*/
opDECAX: function() {
this.resultAuxOverflow = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.resultParitySign = this.regEAX - 1) & this.opMask;
this.regEAX = (this.regEAX & ~this.opMask) | (this.resultParitySign = this.regEAX - 1) & this.opMask;
this.resultValue = this.regEAX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -867,7 +867,7 @@ var X86OpXX = {
*/
opDECCX: function() {
this.resultAuxOverflow = this.regECX;
this.regECX = (this.regECX & this.opMaskClear) | (this.resultParitySign = this.regECX - 1) & this.opMask;
this.regECX = (this.regECX & ~this.opMask) | (this.resultParitySign = this.regECX - 1) & this.opMask;
this.resultValue = this.regECX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -879,7 +879,7 @@ var X86OpXX = {
*/
opDECDX: function() {
this.resultAuxOverflow = this.regEDX;
this.regEDX = (this.regEDX & this.opMaskClear) | (this.resultParitySign = this.regEDX - 1) & this.opMask;
this.regEDX = (this.regEDX & ~this.opMask) | (this.resultParitySign = this.regEDX - 1) & this.opMask;
this.resultValue = this.regEDX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -891,7 +891,7 @@ var X86OpXX = {
*/
opDECBX: function() {
this.resultAuxOverflow = this.regEBX;
this.regEBX = (this.regEBX & this.opMaskClear) | (this.resultParitySign = this.regEBX - 1) & this.opMask;
this.regEBX = (this.regEBX & ~this.opMask) | (this.resultParitySign = this.regEBX - 1) & this.opMask;
this.resultValue = this.regEBX | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -903,7 +903,7 @@ var X86OpXX = {
*/
opDECSP: function() {
this.resultAuxOverflow = this.regESP;
this.regESP = (this.regESP & this.opMaskClear) | (this.resultParitySign = this.regESP - 1) & this.opMask;
this.regESP = (this.regESP & ~this.opMask) | (this.resultParitySign = this.regESP - 1) & this.opMask;
this.resultValue = this.regESP | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -915,7 +915,7 @@ var X86OpXX = {
*/
opDECBP: function() {
this.resultAuxOverflow = this.regEBP;
this.regEBP = (this.regEBP & this.opMaskClear) | (this.resultParitySign = this.regEBP - 1) & this.opMask;
this.regEBP = (this.regEBP & ~this.opMask) | (this.resultParitySign = this.regEBP - 1) & this.opMask;
this.resultValue = this.regEBP | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -927,7 +927,7 @@ var X86OpXX = {
*/
opDECSI: function() {
this.resultAuxOverflow = this.regESI;
this.regESI = (this.regESI & this.opMaskClear) | (this.resultParitySign = this.regESI - 1) & this.opMask;
this.regESI = (this.regESI & ~this.opMask) | (this.resultParitySign = this.regESI - 1) & this.opMask;
this.resultValue = this.regESI | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -939,7 +939,7 @@ var X86OpXX = {
*/
opDECDI: function() {
this.resultAuxOverflow = this.regEDI;
this.regEDI = (this.regEDI & this.opMaskClear) | (this.resultParitySign = this.regEDI - 1) & this.opMask;
this.regEDI = (this.regEDI & ~this.opMask) | (this.resultParitySign = this.regEDI - 1) & this.opMask;
this.resultValue = this.regEDI | (((this.resultValue & this.resultSize)? 1 : 0) << 16);
this.resultSize = X86.RESULT.SIZE_WORD;
this.nStepCycles -= 2; // this form of DEC takes 2 cycles on all CPUs
@ -1032,7 +1032,7 @@ var X86OpXX = {
* op=0x58 (pop AX)
*/
opPOPAX: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | this.popWord();
this.regEAX = (this.regEAX & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1041,7 +1041,7 @@ var X86OpXX = {
* op=0x59 (pop CX)
*/
opPOPCX: function() {
this.regECX = (this.regECX & this.opMaskClear) | this.popWord();
this.regECX = (this.regECX & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1050,7 +1050,7 @@ var X86OpXX = {
* op=0x5A (pop DX)
*/
opPOPDX: function() {
this.regEDX = (this.regEDX & this.opMaskClear) | this.popWord();
this.regEDX = (this.regEDX & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1059,7 +1059,7 @@ var X86OpXX = {
* op=0x5B (pop BX)
*/
opPOPBX: function() {
this.regEBX = (this.regEBX & this.opMaskClear) | this.popWord();
this.regEBX = (this.regEBX & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1068,7 +1068,7 @@ var X86OpXX = {
* op=0x5C (pop SP)
*/
opPOPSP: function() {
this.regESP = (this.regESP & this.opMaskClear) | this.popWord();
this.regESP = (this.regESP & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1077,7 +1077,7 @@ var X86OpXX = {
* op=0x5D (pop BP)
*/
opPOPBP: function() {
this.regEBP = (this.regEBP & this.opMaskClear) | this.popWord();
this.regEBP = (this.regEBP & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1086,7 +1086,7 @@ var X86OpXX = {
* op=0x5E (pop SI)
*/
opPOPSI: function() {
this.regESI = (this.regESI & this.opMaskClear) | this.popWord();
this.regESI = (this.regESI & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1095,7 +1095,7 @@ var X86OpXX = {
* op=0x5F (pop DI)
*/
opPOPDI: function() {
this.regEDI = (this.regEDI & this.opMaskClear) | this.popWord();
this.regEDI = (this.regEDI & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopReg;
},
/**
@ -1121,14 +1121,14 @@ var X86OpXX = {
* op=0x61 (popa) (80186/80188 and up)
*/
opPOPA: function() {
this.regEDI = (this.regEDI & this.opMaskClear) | this.popWord();
this.regESI = (this.regESI & this.opMaskClear) | this.popWord();
this.regEBP = (this.regEBP & this.opMaskClear) | this.popWord();
this.regEDI = (this.regEDI & ~this.opMask) | this.popWord();
this.regESI = (this.regESI & ~this.opMask) | this.popWord();
this.regEBP = (this.regEBP & ~this.opMask) | this.popWord();
this.regESP += this.opSize;
this.regEBX = (this.regEBX & this.opMaskClear) | this.popWord();
this.regEDX = (this.regEDX & this.opMaskClear) | this.popWord();
this.regECX = (this.regECX & this.opMaskClear) | this.popWord();
this.regEAX = (this.regEAX & this.opMaskClear) | this.popWord();
this.regEBX = (this.regEBX & ~this.opMask) | this.popWord();
this.regEDX = (this.regEDX & ~this.opMask) | this.popWord();
this.regECX = (this.regECX & ~this.opMask) | this.popWord();
this.regEAX = (this.regEAX & ~this.opMask) | this.popWord();
this.nStepCycles -= this.CYCLES.nOpCyclesPopAll;
},
/**
@ -1211,10 +1211,10 @@ var X86OpXX = {
}
if (nReps--) {
var b = this.bus.checkPortInputNotify(this.regEDX, this.regEIP - nDelta - 1);
var b = this.bus.checkPortInputNotify(this.regEDX, this.regLIP - nDelta - 1);
if (BACKTRACK) this.backTrack.btiMemLo = this.backTrack.btiIO;
this.setSOByte(this.segES, this.regEDI & this.addrMask, b);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -1224,6 +1224,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -1257,13 +1258,13 @@ var X86OpXX = {
if (this.opPrefixes & X86.OPFLAG.REPEAT) nCycles = 4;
}
if (nReps--) {
var addrFrom = this.regEIP - nDelta - 1;
var addrFrom = this.regLIP - nDelta - 1;
var w = this.bus.checkPortInputNotify(this.regEDX, addrFrom);
if (BACKTRACK) this.backTrack.btiMemLo = this.backTrack.btiIO;
w |= (this.bus.checkPortInputNotify(this.regEDX, addrFrom) << 8);
if (BACKTRACK) this.backTrack.btiMemHi = this.backTrack.btiIO;
this.setSOWord(this.segES, this.regEDI & this.addrMask, w);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -1273,6 +1274,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -1305,10 +1307,10 @@ var X86OpXX = {
}
if (nReps--) {
var b = this.getSOByte(this.segDS, this.regESI & this.addrMask);
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
this.bus.checkPortOutputNotify(this.regEDX, b, this.regEIP - nDelta - 1);
this.bus.checkPortOutputNotify(this.regEDX, b, this.regLIP - nDelta - 1);
if (nReps) {
/*
* We have to back up to the prefix byte(s), not just to the string instruction,
@ -1316,6 +1318,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -1348,10 +1351,10 @@ var X86OpXX = {
}
if (nReps--) {
var w = this.getSOWord(this.segDS, this.regESI & this.addrMask);
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
var addrFrom = this.regEIP - nDelta - 1;
var addrFrom = this.regLIP - nDelta - 1;
this.bus.checkPortOutputNotify(this.regEDX, w & 0xff, addrFrom);
this.bus.checkPortOutputNotify(this.regEDX, w >> 8, addrFrom);
if (nReps) {
@ -1361,6 +1364,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -1373,7 +1377,7 @@ var X86OpXX = {
opJO: function() {
var disp = this.getIPDisp();
if (this.getOF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1387,7 +1391,7 @@ var X86OpXX = {
opJNO: function() {
var disp = this.getIPDisp();
if (!this.getOF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1401,7 +1405,7 @@ var X86OpXX = {
opJC: function() {
var disp = this.getIPDisp();
if (this.getCF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1415,7 +1419,7 @@ var X86OpXX = {
opJNC: function() {
var disp = this.getIPDisp();
if (!this.getCF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1429,7 +1433,7 @@ var X86OpXX = {
opJZ: function() {
var disp = this.getIPDisp();
if (this.getZF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1443,7 +1447,7 @@ var X86OpXX = {
opJNZ: function() {
var disp = this.getIPDisp();
if (!this.getZF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1457,7 +1461,7 @@ var X86OpXX = {
opJBE: function() {
var disp = this.getIPDisp();
if (this.getCF() || this.getZF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1471,7 +1475,7 @@ var X86OpXX = {
opJNBE: function() {
var disp = this.getIPDisp();
if (!this.getCF() && !this.getZF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1485,7 +1489,7 @@ var X86OpXX = {
opJS: function() {
var disp = this.getIPDisp();
if (this.getSF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1499,7 +1503,7 @@ var X86OpXX = {
opJNS: function() {
var disp = this.getIPDisp();
if (!this.getSF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1513,7 +1517,7 @@ var X86OpXX = {
opJP: function() {
var disp = this.getIPDisp();
if (this.getPF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1527,7 +1531,7 @@ var X86OpXX = {
opJNP: function() {
var disp = this.getIPDisp();
if (!this.getPF()) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1541,7 +1545,7 @@ var X86OpXX = {
opJL: function() {
var disp = this.getIPDisp();
if (!this.getSF() != !this.getOF()) { // jshint ignore:line
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1555,7 +1559,7 @@ var X86OpXX = {
opJNL: function() {
var disp = this.getIPDisp();
if (!this.getSF() == !this.getOF()) { // jshint ignore:line
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1569,7 +1573,7 @@ var X86OpXX = {
opJLE: function() {
var disp = this.getIPDisp();
if (this.getZF() || !this.getSF() != !this.getOF()) { // jshint ignore:line
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1583,7 +1587,7 @@ var X86OpXX = {
opJNLE: function() {
var disp = this.getIPDisp();
if (!this.getZF() && !this.getSF() == !this.getOF()) { // jshint ignore:line
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmpC;
return;
}
@ -1881,8 +1885,8 @@ var X86OpXX = {
*/
opXCHGCX: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regECX & this.opMask);
this.regECX = (this.regECX & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regECX & this.opMask);
this.regECX = (this.regECX & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1892,8 +1896,8 @@ var X86OpXX = {
*/
opXCHGDX: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regEDX & this.opMask);
this.regEDX = (this.regEDX & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regEDX & this.opMask);
this.regEDX = (this.regEDX & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1903,8 +1907,8 @@ var X86OpXX = {
*/
opXCHGBX: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regEBX & this.opMask);
this.regEBX = (this.regEBX & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regEBX & this.opMask);
this.regEBX = (this.regEBX & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1914,8 +1918,8 @@ var X86OpXX = {
*/
opXCHGSP: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regESP & this.opMask);
this.regESP = (this.regESP & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regESP & this.opMask);
this.regESP = (this.regESP & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1925,8 +1929,8 @@ var X86OpXX = {
*/
opXCHGBP: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regEBP & this.opMask);
this.regEBP = (this.regEBP & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regEBP & this.opMask);
this.regEBP = (this.regEBP & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1936,8 +1940,8 @@ var X86OpXX = {
*/
opXCHGSI: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regESI & this.opMask);
this.regESI = (this.regESI & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regESI & this.opMask);
this.regESI = (this.regESI & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1947,8 +1951,8 @@ var X86OpXX = {
*/
opXCHGDI: function() {
var temp = this.regEAX;
this.regEAX = (this.regEAX & this.opMaskClear) | (this.regEDI & this.opMask);
this.regEDI = (this.regEDI & this.opMaskClear) | (temp & this.opMask);
this.regEAX = (this.regEAX & ~this.opMask) | (this.regEDI & this.opMask);
this.regEDI = (this.regEDI & ~this.opMask) | (temp & this.opMask);
this.nStepCycles -= 3; // this form of XCHG takes 3 cycles on all CPUs
},
/**
@ -1958,7 +1962,7 @@ var X86OpXX = {
*/
opCBW: function() {
if (this.opSize == 2) {
this.regEAX = (this.regEAX & this.opMaskClear) | (((this.regEAX << 24) >> 24) & 0xffff);
this.regEAX = (this.regEAX & ~this.opMask) | (((this.regEAX << 24) >> 24) & 0xffff);
} else {
this.regEAX = ((this.regEAX << 16) >> 16);
}
@ -1971,7 +1975,7 @@ var X86OpXX = {
*/
opCWD: function() {
if (this.opSize == 2) {
this.regEDX = (this.regEDX & this.opMaskClear) | ((this.regEAX & 0x8000)? 0xffff : 0);
this.regEDX = (this.regEDX & ~this.opMask) | ((this.regEAX & 0x8000)? 0xffff : 0);
} else {
this.regEDX = (this.regEAX & 0x80000000)? 0xffffffff : 0;
}
@ -2064,7 +2068,7 @@ var X86OpXX = {
* op=0xA1 (mov AX,mem)
*/
opMOVAXDst: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | this.getEAWord(this.segData, this.getIPWord());
this.regEAX = (this.regEAX & ~this.opMask) | this.getEAWord(this.segData, this.getIPWord());
this.nStepCycles -= this.CYCLES.nOpCyclesMovAM;
},
/**
@ -2109,8 +2113,8 @@ var X86OpXX = {
if (nReps--) {
var nInc = ((this.regPS & X86.PS.DF)? -1 : 1);
this.setSOByte(this.segES, this.regEDI & this.addrMask, this.getEAByte(this.segData, this.regESI));
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + nInc) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + nInc) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -2124,6 +2128,7 @@ var X86OpXX = {
* string instructions with multiple prefixes.
*/
this.advanceIP(((this.opPrefixes & X86.OPFLAG.SEG)? -3 : -2));
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -2146,8 +2151,8 @@ var X86OpXX = {
if (nReps--) {
var nInc = ((this.regPS & X86.PS.DF)? -2 : 2);
this.setSOWord(this.segES, this.regEDI & this.addrMask, this.getEAWord(this.segData, this.regESI));
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + nInc) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + nInc) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -2161,6 +2166,7 @@ var X86OpXX = {
* string instructions with multiple prefixes.
*/
this.advanceIP(((this.opPrefixes & X86.OPFLAG.SEG)? -3 : -2));
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -2185,8 +2191,8 @@ var X86OpXX = {
var bDst = this.getEAByte(this.segData, this.regESI & this.addrMask);
var bSrc = this.modEAByte(this.segES, this.regEDI & this.addrMask);
X86Grps.opGrpCMPb.call(this, bDst, bSrc);
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + nInc) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + nInc) & this.addrMask);
/*
* NOTE: As long as we're calling opGrpCMPb(), all our cycle times must be reduced by nOpCyclesArithRM
*/
@ -2208,6 +2214,7 @@ var X86OpXX = {
* string instructions with multiple prefixes.
*/
this.advanceIP(((this.opPrefixes & X86.OPFLAG.SEG)? -3 : -2));
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
if (EAFUNCS) this.setEAByte = this.setEAByteEnabled;
@ -2233,8 +2240,8 @@ var X86OpXX = {
var wDst = this.getEAWord(this.segData, this.regESI & this.addrMask);
var wSrc = this.modEAWord(this.segES, this.regEDI & this.addrMask);
X86Grps.opGrpCMPw.call(this, wDst, wSrc);
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + nInc) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + nInc) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + nInc) & this.addrMask);
/*
* NOTE: As long as we're calling opGrpCMPw(), all our cycle times must be reduced by nOpCyclesArithRM
*/
@ -2256,6 +2263,7 @@ var X86OpXX = {
* string instructions with multiple prefixes.
*/
this.advanceIP(((this.opPrefixes & X86.OPFLAG.SEG)? -3 : -2));
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
if (EAFUNCS) this.setEAWord = this.setEAWordEnabled;
@ -2305,7 +2313,7 @@ var X86OpXX = {
* NOTE: We rely on setSOByte() to truncate regEAX to 8 bits; if setSOByte() changes, mask AX below.
*/
this.setSOByte(this.segES, this.regEDI & this.addrMask, this.regEAX);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -2315,7 +2323,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regEIP == this.opEA);
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -2345,7 +2353,7 @@ var X86OpXX = {
* if you think the cycle times here are too high.
*/
this.setSOWord(this.segES, this.regEDI & this.addrMask, this.regEAX);
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -2355,6 +2363,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -2376,7 +2385,7 @@ var X86OpXX = {
}
if (nReps--) {
this.regEAX = (this.regEAX & ~0xff) | this.getEAByte(this.segData, this.regESI & this.addrMask);
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -2390,6 +2399,7 @@ var X86OpXX = {
* string instructions with multiple prefixes.
*/
this.advanceIP(((this.opPrefixes & X86.OPFLAG.SEG)? -3 : -2));
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -2411,7 +2421,7 @@ var X86OpXX = {
}
if (nReps--) {
this.regEAX = this.getEAWord(this.segData, this.regESI & this.addrMask);
this.regESI = (this.regESI & this.addrMaskClear) | ((this.regESI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.regESI = (this.regESI & ~this.addrMask) | ((this.regESI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.nStepCycles -= nCycles;
this.regECX -= nDelta;
if (nReps) {
@ -2425,6 +2435,7 @@ var X86OpXX = {
* string instructions with multiple prefixes.
*/
this.advanceIP(((this.opPrefixes & X86.OPFLAG.SEG)? -3 : -2));
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
}
@ -2446,7 +2457,7 @@ var X86OpXX = {
}
if (nReps--) {
X86Grps.opGrpCMPb.call(this, this.regEAX & 0xff, this.modEAByte(this.segES, this.regEDI & this.addrMask));
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & this.addrMask);
/*
* NOTE: As long as we're calling opGrpCMPb(), all our cycle times must be reduced by nOpCyclesArithRM
*/
@ -2464,6 +2475,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
if (EAFUNCS) this.setEAByte = this.setEAByteEnabled;
@ -2486,7 +2498,7 @@ var X86OpXX = {
}
if (nReps--) {
X86Grps.opGrpCMPw.call(this, this.regEAX, this.modEAWord(this.segES, this.regEDI & this.addrMask));
this.regEDI = (this.regEDI & this.addrMaskClear) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
this.regEDI = (this.regEDI & ~this.addrMask) | ((this.regEDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & this.addrMask);
/*
* NOTE: As long as we're calling opGrpCMPb(), all our cycle times must be reduced by nOpCyclesArithRM
*/
@ -2504,6 +2516,7 @@ var X86OpXX = {
* the interrupt handler will return us to an invalid state.
*/
this.advanceIP(-2); // this instruction does not support segment overrides
this.assert(this.regLIP == this.opLIP);
this.opFlags |= X86.OPFLAG.REPEAT;
}
if (EAFUNCS) this.setEAWord = this.setEAWordEnabled;
@ -2587,7 +2600,7 @@ var X86OpXX = {
* op=0xB8 (mov AX,imm16)
*/
opMOVAXw: function() {
this.regEAX = (this.regEAX & this.opMaskClear) | this.getIPWord();
this.regEAX = (this.regEAX & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2596,7 +2609,7 @@ var X86OpXX = {
* op=0xB9 (mov CX,imm16)
*/
opMOVCXw: function() {
this.regECX = (this.regECX & this.opMaskClear) | this.getIPWord();
this.regECX = (this.regECX & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2605,7 +2618,7 @@ var X86OpXX = {
* op=0xBA (mov DX,imm16)
*/
opMOVDXw: function() {
this.regEDX = (this.regEDX & this.opMaskClear) | this.getIPWord();
this.regEDX = (this.regEDX & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2614,7 +2627,7 @@ var X86OpXX = {
* op=0xBB (mov BX,imm16)
*/
opMOVBXw: function() {
this.regEBX = (this.regEBX & this.opMaskClear) | this.getIPWord();
this.regEBX = (this.regEBX & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2623,7 +2636,7 @@ var X86OpXX = {
* op=0xBC (mov SP,imm16)
*/
opMOVSPw: function() {
this.regESP = (this.regESP & this.opMaskClear) | this.getIPWord();
this.regESP = (this.regESP & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2632,7 +2645,7 @@ var X86OpXX = {
* op=0xBD (mov BP,imm16)
*/
opMOVBPw: function() {
this.regEBP = (this.regEBP & this.opMaskClear) | this.getIPWord();
this.regEBP = (this.regEBP & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2641,7 +2654,7 @@ var X86OpXX = {
* op=0xBE (mov SI,imm16)
*/
opMOVSIw: function() {
this.regESI = (this.regESI & this.opMaskClear) | this.getIPWord();
this.regESI = (this.regESI & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2650,7 +2663,7 @@ var X86OpXX = {
* op=0xBF (mov DI,imm16)
*/
opMOVDIw: function() {
this.regEDI = (this.regEDI & this.opMaskClear) | this.getIPWord();
this.regEDI = (this.regEDI & ~this.opMask) | this.getIPWord();
this.nStepCycles -= this.CYCLES.nOpCyclesLAHF;
},
/**
@ -2677,7 +2690,7 @@ var X86OpXX = {
opRETn: function() {
var n = this.getIPWord();
this.setIP(this.popWord());
this.regESP = (this.regESP & this.addrMaskClear) | ((this.regESP + (n << (this.opSize >> 2))) & this.addrMask);
this.regESP = (this.regESP & ~this.addrMask) | ((this.regESP + (n << (this.opSize >> 2))) & this.addrMask);
this.nStepCycles -= this.CYCLES.nOpCyclesRetn;
},
/**
@ -2773,13 +2786,13 @@ var X86OpXX = {
if (bLevel > 0) {
this.nStepCycles -= (bLevel << 2) + (bLevel > 1? 1 : 0);
while (--bLevel) {
this.regEBP = (this.regEBP & this.segSS.addrMaskClear) | ((this.regEBP - this.opSize) & this.segSS.addrMask);
this.regEBP = (this.regEBP & ~this.segSS.addrMask) | ((this.regEBP - this.opSize) & this.segSS.addrMask);
this.pushWord(this.getSOWord(this.segSS, this.regEBP & this.segSS.addrMask));
}
this.pushWord(wFrame);
}
this.regEBP = (this.regEBP & this.segSS.addrMaskClear) | wFrame;
this.regESP = (this.regESP & this.segSS.addrMaskClear) | ((this.regESP - wLocal) & this.segSS.addrMask);
this.regEBP = (this.regEBP & ~this.segSS.addrMask) | wFrame;
this.regESP = (this.regESP & ~this.segSS.addrMask) | ((this.regESP - wLocal) & this.segSS.addrMask);
},
/**
* @this {X86CPU}
@ -2789,8 +2802,8 @@ var X86OpXX = {
* op=0xC9 (leave) (80186/80188 and up)
*/
opLEAVE: function() {
this.regESP = (this.regESP & this.segSS.addrMaskClear) | (this.regEBP & this.segSS.addrMask);
this.regEBP = (this.regEBP & this.opMaskClear) | (this.popWord() & this.opMask);
this.regESP = (this.regESP & ~this.segSS.addrMask) | (this.regEBP & this.segSS.addrMask);
this.regEBP = (this.regEBP & ~this.opMask) | (this.popWord() & this.opMask);
/*
* NOTE: 5 is the cycle time for the 80286; the 80186/80188 has a cycle time of 8. However, accurate cycle
* counts for the 80186/80188 is low priority. TODO: Fix this someday.
@ -2976,7 +2989,7 @@ var X86OpXX = {
opLOOPNZ: function() {
var disp = this.getIPDisp();
if ((this.regECX = (this.regECX - 1) & 0xffff) && (this.resultValue & (this.resultSize - 1))) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesLoopNZ;
return;
}
@ -2990,7 +3003,7 @@ var X86OpXX = {
opLOOPZ: function() {
var disp = this.getIPDisp();
if ((this.regECX = (this.regECX - 1) & 0xffff) && !(this.resultValue & (this.resultSize - 1))) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesLoopZ;
return;
}
@ -3004,7 +3017,7 @@ var X86OpXX = {
opLOOP: function() {
var disp = this.getIPDisp();
if ((this.regECX = (this.regECX - 1) & 0xffff)) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesLoop;
return;
}
@ -3018,7 +3031,7 @@ var X86OpXX = {
opJCXZ: function() {
var disp = this.getIPDisp();
if (!this.regECX) {
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesLoopZ;
return;
}
@ -3031,7 +3044,7 @@ var X86OpXX = {
*/
opINb: function() {
var port = this.getIPByte();
this.regEAX = (this.regEAX & ~0xff) | this.bus.checkPortInputNotify(port, this.regEIP - 2);
this.regEAX = (this.regEAX & ~0xff) | this.bus.checkPortInputNotify(port, this.regLIP - 2);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInP;
},
@ -3042,9 +3055,9 @@ var X86OpXX = {
*/
opINw: function() {
var port = this.getIPByte();
this.regEAX = this.bus.checkPortInputNotify(port, this.regEIP - 2);
this.regEAX = this.bus.checkPortInputNotify(port, this.regLIP - 2);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.regEAX |= (this.bus.checkPortInputNotify((port + 1) & 0xffff, this.regEIP - 2) << 8);
this.regEAX |= (this.bus.checkPortInputNotify((port + 1) & 0xffff, this.regLIP - 2) << 8);
if (BACKTRACK) this.backTrack.btiAH = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInP;
},
@ -3055,7 +3068,7 @@ var X86OpXX = {
*/
opOUTb: function() {
var port = this.getIPByte();
this.bus.checkPortOutputNotify(port, this.regEAX & 0xff, this.regEIP - 2);
this.bus.checkPortOutputNotify(port, this.regEAX & 0xff, this.regLIP - 2);
this.nStepCycles -= this.CYCLES.nOpCyclesOutP;
},
/**
@ -3065,8 +3078,8 @@ var X86OpXX = {
*/
opOUTw: function() {
var port = this.getIPByte();
this.bus.checkPortOutputNotify(port, this.regEAX & 0xff, this.regEIP - 2);
this.bus.checkPortOutputNotify((port + 1) & 0xffff, this.regEAX >> 8, this.regEIP - 2);
this.bus.checkPortOutputNotify(port, this.regEAX & 0xff, this.regLIP - 2);
this.bus.checkPortOutputNotify((port + 1) & 0xffff, this.regEAX >> 8, this.regLIP - 2);
this.nStepCycles -= this.CYCLES.nOpCyclesOutP;
},
/**
@ -3076,8 +3089,8 @@ var X86OpXX = {
*/
opCALL: function() {
var disp = this.getIPWord();
this.pushWord(this.regIP);
this.setIP(this.regIP + disp);
this.pushWord(this.regEIP);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesCall;
},
/**
@ -3087,7 +3100,7 @@ var X86OpXX = {
*/
opJMP: function() {
var disp = this.getIPWord();
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmp;
},
/**
@ -3106,7 +3119,7 @@ var X86OpXX = {
*/
opJMPs: function() {
var disp = this.getIPDisp();
this.setIP(this.regIP + disp);
this.setIP(this.regEIP + disp);
this.nStepCycles -= this.CYCLES.nOpCyclesJmp;
},
/**
@ -3115,7 +3128,7 @@ var X86OpXX = {
* op=0xEC (in AL,dx)
*/
opINDXb: function() {
this.regEAX = (this.regEAX & ~0xff) | this.bus.checkPortInputNotify(this.regEDX, this.regEIP - 1);
this.regEAX = (this.regEAX & ~0xff) | this.bus.checkPortInputNotify(this.regEDX, this.regLIP - 1);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInDX;
},
@ -3125,9 +3138,9 @@ var X86OpXX = {
* op=0xED (in AX,dx)
*/
opINDXw: function() {
this.regEAX = this.bus.checkPortInputNotify(this.regEDX, this.regEIP - 1);
this.regEAX = this.bus.checkPortInputNotify(this.regEDX, this.regLIP - 1);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.regEAX |= (this.bus.checkPortInputNotify((this.regEDX + 1) & 0xffff, this.regEIP - 1) << 8);
this.regEAX |= (this.bus.checkPortInputNotify((this.regEDX + 1) & 0xffff, this.regLIP - 1) << 8);
if (BACKTRACK) this.backTrack.btiAH = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInDX;
},
@ -3137,7 +3150,7 @@ var X86OpXX = {
* op=0xEE (out dx,AL)
*/
opOUTDXb: function() {
this.bus.checkPortOutputNotify(this.regEDX, this.regEAX & 0xff, this.regEIP - 1);
this.bus.checkPortOutputNotify(this.regEDX, this.regEAX & 0xff, this.regLIP - 1);
this.nStepCycles -= this.CYCLES.nOpCyclesOutDX;
},
/**
@ -3146,8 +3159,8 @@ var X86OpXX = {
* op=0xEF (out dx,AX)
*/
opOUTDXw: function() {
this.bus.checkPortOutputNotify(this.regEDX, this.regEAX & 0xff, this.regEIP - 1);
this.bus.checkPortOutputNotify((this.regEDX + 1) & 0xffff, this.regEAX >> 8, this.regEIP - 1);
this.bus.checkPortOutputNotify(this.regEDX, this.regEAX & 0xff, this.regLIP - 1);
this.bus.checkPortOutputNotify((this.regEDX + 1) & 0xffff, this.regEAX >> 8, this.regLIP - 1);
this.nStepCycles -= this.CYCLES.nOpCyclesOutDX;
},
/**