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32-bit multiplication

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Jeff Parsons 2015-04-22 17:24:40 -07:00 • committed by jeffpar
commit d68f1bd985
6 changed files with 157 additions and 63 deletions
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13
modules/pcjs/lib/x86cpu.js
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@ -1000,7 +1000,9 @@ X86CPU.prototype.resetRegs = function()
* instructions perform calculations that must be propagated to specific registers (eg, AX and/or DX), which
* the ModRM decoder functions don't know about. We initialize them here mainly for documentation purposes.
*/
this.regMD16 = this.regMD32 = -1;
this.fMDSet = false; // regMDHi and/or regMDLo are invalid unless fMDSet is true
this.regMDLo = this.regMDHi = 0;
this.regXX = 0; // internal register for segment register and control register moves
/*
* Another internal "register" we occasionally need is an interim copy of bModRM, set inside selected opcode
@ -2438,7 +2440,7 @@ X86CPU.prototype.setPS = function(regPS, cpl)
};
/**
* traceLog(prop, dst, src, flagsIn, flagsOut, result)
* traceLog(prop, dst, src, flagsIn, flagsOut, resultLo, resultHi)
*
* @this {X86CPU}
* @param {string} prop
@ -2446,12 +2448,13 @@ X86CPU.prototype.setPS = function(regPS, cpl)
* @param {number} src
* @param {number|null} flagsIn
* @param {number|null} flagsOut
* @param {number} result
* @param {number} resultLo
* @param {number} [resultHi]
*/
X86CPU.prototype.traceLog = function(prop, dst, src, flagsIn, flagsOut, result)
X86CPU.prototype.traceLog = function(prop, dst, src, flagsIn, flagsOut, resultLo, resultHi)
{
if (DEBUG && this.dbg) {
this.dbg.traceLog(prop, dst, src, flagsIn, flagsOut, result);
this.dbg.traceLog(prop, dst, src, flagsIn, flagsOut, resultLo, resultHi);
}
};