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Debugger changes for improved 32-bit support

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This commit is contained in:
Jeff Parsons 2015-02-28 11:55:55 -08:00 • committed by jeffpar
commit f50612e7ca
21 changed files with 3581 additions and 2949 deletions
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42
modules/pcjs/lib/x86opxx.js
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@ -218,7 +218,7 @@ var X86OpXX = {
* @this {X86CPU}
*/
op0F: function() {
X86Op0F.aOps0F[this.getIPByte()].call(this);
this.aOps0F[this.getIPByte()].call(this);
},
/**
* op=0x10 (ADC byte,reg)
@ -1327,6 +1327,36 @@ var X86OpXX = {
opARPL: function() {
this.aOpModMemWord[this.getIPByte()].call(this, X86Help.opHelpARPL);
},
/**
* op=0x64 (FS:)
*
* @this {X86CPU}
*/
opFS: function() {
/*
* NOTE: The fact that we're setting NOINTR along with SEG is really just for documentation purposes;
* the way stepCPU() is written, the presence of any prefix bypasses normal interrupt processing anyway.
*/
this.opFlags |= X86.OPFLAG.SEG | X86.OPFLAG.NOINTR;
this.segData = this.segStack = this.segFS;
this.nStepCycles -= this.CYCLES.nOpCyclesPrefix;
this.stopCPU();
},
/**
* op=0x65 (GS:)
*
* @this {X86CPU}
*/
opGS: function() {
/*
* NOTE: The fact that we're setting NOINTR along with SEG is really just for documentation purposes;
* the way stepCPU() is written, the presence of any prefix bypasses normal interrupt processing anyway.
*/
this.opFlags |= X86.OPFLAG.SEG | X86.OPFLAG.NOINTR;
this.segData = this.segStack = this.segGS;
this.nStepCycles -= this.CYCLES.nOpCyclesPrefix;
this.stopCPU();
},
/**
* op=0x66 (OS:) (80386 and up)
*
@ -1339,8 +1369,9 @@ var X86OpXX = {
this.opFlags |= X86.OPFLAG.SEG;
this.dataSize ^= 0x6; // that which is 2 shall become 4, and vice versa
this.dataMask ^= (0xffff0000|0); // that which is 0x0000ffff shall become 0xffffffff, and vice versa
this.opMem = this.aaOpMem[this.dataSize];
this.setDataSize();
this.nStepCycles -= this.CYCLES.nOpCyclesPrefix;
this.stopCPU();
}
},
/**
@ -1355,8 +1386,9 @@ var X86OpXX = {
this.opFlags |= X86.OPFLAG.SEG;
this.addrSize ^= 0x06; // that which is 2 shall become 4, and vice versa
this.addrMask ^= (0xffff0000|0); // that which is 0x0000ffff shall become 0xffffffff, and vice versa
this.setOpMod();
this.setAddrSize();
this.nStepCycles -= this.CYCLES.nOpCyclesPrefix;
this.stopCPU();
}
},
/**
@ -1929,7 +1961,7 @@ var X86OpXX = {
*
* NOTE: Since the ModRM decoders deal only with general-purpose registers, we must move
* the appropriate segment register into a special variable (regMD16), which our helper function
* (opHelpMOVSegSrc) will use to replace the decoder's src operand.
* (opHelpMOVMD16) will use to replace the decoder's src operand.
*
* @this {X86CPU}
*/
@ -1957,7 +1989,7 @@ var X86OpXX = {
* Like other MOV operations, the destination does not need to be read, just written.
*/
this.opFlags |= X86.OPFLAG.NOREAD;
this.aOpModMemWord[bModRM].call(this, X86Help.opHelpMOVSegSrc);
this.aOpModMemWord[bModRM].call(this, X86Help.opHelpMOVMD16);
},
/**
* op=0x8D (LEA reg,word)