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Preliminary groundwork for FPU support

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This commit is contained in:
Jeff Parsons 2015-11-11 18:11:30 -08:00
commit 0c6db1df46
18 changed files with 756 additions and 173 deletions
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93
modules/pcjs/lib/x86ops.js
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@ -3771,14 +3771,95 @@ X86.opXLAT = function()
};
/**
* op=0xD8-0xDF (ESC)
* opESC()
*
* @this {X86CPU}
* @param {number} bOpcode
*/
X86.opESC = function(bOpcode)
{
this.bOpcode = bOpcode;
this.aOpModRegWord[this.bModRM = this.getIPByte()].call(this, X86.fnESC);
};
/**
* op=0xD8 (ESC0)
*
* @this {X86CPU}
*/
X86.opESC = function()
X86.opESC0 = function()
{
this.aOpModRegWord[this.getIPByte()].call(this, X86.fnESC);
this.nStepCycles -= 8; // TODO: Fix
X86.opESC.call(this, X86.OPCODE.ESC0);
};
/**
* op=0xD9 (ESC1)
*
* @this {X86CPU}
*/
X86.opESC1 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC1);
};
/**
* op=0xDA (ESC2)
*
* @this {X86CPU}
*/
X86.opESC2 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC2);
};
/**
* op=0xDB (ESC3)
*
* @this {X86CPU}
*/
X86.opESC3 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC3);
};
/**
* op=0xDC (ESC4)
*
* @this {X86CPU}
*/
X86.opESC4 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC4);
};
/**
* op=0xDD (ESC5)
*
* @this {X86CPU}
*/
X86.opESC5 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC5);
};
/**
* op=0xDE (ESC6)
*
* @this {X86CPU}
*/
X86.opESC6 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC6);
};
/**
* op=0xDF (ESC7)
*
* @this {X86CPU}
*/
X86.opESC7 = function()
{
X86.opESC.call(this, X86.OPCODE.ESC7);
};
/**
@ -4421,8 +4502,8 @@ X86.aOps = [
* Even as of the Pentium, opcode 0xD6 is still marked as "reserved", but it's always been SALC (aka SETALC).
*/
X86.opAAM, X86.opAAD, X86.opSALC, X86.opXLAT, // 0xD4-0xD7
X86.opESC, X86.opESC, X86.opESC, X86.opESC, // 0xD8-0xDB
X86.opESC, X86.opESC, X86.opESC, X86.opESC, // 0xDC-0xDF
X86.opESC0, X86.opESC1, X86.opESC2, X86.opESC3, // 0xD8-0xDB
X86.opESC4, X86.opESC5, X86.opESC6, X86.opESC7, // 0xDC-0xDF
X86.opLOOPNZ, X86.opLOOPZ, X86.opLOOP, X86.opJCXZ, // 0xE0-0xE3
X86.opINb, X86.opINw, X86.opOUTb, X86.opOUTw, // 0xE4-0xE7
X86.opCALL, X86.opJMP, X86.opJMPF, X86.opJMPs, // 0xE8-0xEB