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Fixed the Debugger opcode history buffer (was broken by DbgAddr changes)

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This commit is contained in:
Jeff Parsons 2015-05-09 07:52:03 -07:00 • committed by jeffpar
commit ac862f3b1d
3 changed files with 78 additions and 70 deletions
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33
modules/pcjs/lib/x86seg.js
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@ -38,6 +38,19 @@ if (typeof module !== 'undefined') {
var X86 = require("./x86");
}
/**
* @class X86Seg
* @property {number} sel
* @property {number} limit (in protected-mode, this comes from descriptor word 0x0)
* @property {number} base (in protected-mode, this comes from descriptor word 0x2)
* @property {number} acc (in protected-mode, this comes from descriptor word 0x4, masked with 0xff00; bits 0-7 supplement base bits 16-23)
* @property {number} ext (in protected-mode, this is descriptor word 0x6, 80386 only; supplements limit bits 16-19 and base bits 24-31)
*
* TODO: Determine what good, if any, these class annotations are for either an IDE like WebStorm or a tool like
* the Closure Compiler. More importantly, what good do they do at runtime? Is it better to simply ensure that all
* object properties are explicitly initialized in the constructor, and document them there instead?
*/
/**
* X86Seg(cpu, sName)
*
@ -54,10 +67,10 @@ function X86Seg(cpu, id, sName, fProt)
this.id = id;
this.sName = sName || "";
this.sel = 0;
this.limit = 0xffff; // in protected-mode, this is descriptor word 0x0
this.base = 0; // in protected-mode, this is descriptor word 0x2
this.acc = this.type = 0; // in protected-mode, this is descriptor word 0x4, masked with 0xff00 (bits 0-7 supplement base bits 16-23)
this.ext = 0; // in protected-mode, this is descriptor word 0x6 (80386 only; supplements limit bits 16-19 and base bits 24-31)
this.limit = 0xffff;
this.base = 0;
this.acc = this.type = 0;
this.ext = 0;
this.cpl = this.dpl = 0;
this.addrDesc = X86.ADDR_INVALID;
this.dataSize = this.addrSize = 2;
@ -108,7 +121,7 @@ X86Seg.ID = {
* @this {X86Seg}
* @param {number} sel
* @param {boolean} [fSuppress] is true to suppress any errors
* @return {number} base address of selected segment, or ADDR_INVALID if error (TODO: No error conditions exist yet)
* @return {number} base address of selected segment, or ADDR_INVALID if error (TODO: No error conditions yet)
*/
X86Seg.prototype.loadReal = function loadReal(sel, fSuppress)
{
@ -122,7 +135,7 @@ X86Seg.prototype.loadReal = function loadReal(sel, fSuppress)
* this.dataSize = this.addrSize = 2;
* this.dataMask = this.addrMask = 0xffff;
*
* Only the selector and base portions of a segment register can be changed in real-mode.
* In short, only the selector and base portions of a segment register can be changed in real-mode.
*/
return this.base = this.sel << 4;
};
@ -209,7 +222,7 @@ X86Seg.prototype.loadProt = function loadProt(sel, fSuppress)
*
* @this {X86Seg}
* @param {number} nIDT
* @return {number} address from selected vector, or ADDR_INVALID if error (TODO: No error conditions exist yet)
* @return {number} address from selected vector, or ADDR_INVALID if error (TODO: No error conditions yet)
*/
X86Seg.prototype.loadIDTReal = function loadIDTReal(nIDT)
{
@ -238,7 +251,7 @@ X86Seg.prototype.loadIDTReal = function loadIDTReal(nIDT)
*
* @this {X86Seg}
* @param {number} nIDT
* @return {number} address from selected vector, or ADDR_INVALID if error (TODO: No error conditions exist yet)
* @return {number} address from selected vector, or ADDR_INVALID if error (TODO: No error conditions yet)
*/
X86Seg.prototype.loadIDTProt = function loadIDTProt(nIDT)
{
@ -264,7 +277,7 @@ X86Seg.prototype.loadIDTProt = function loadIDTProt(nIDT)
* @param {number} off is a segment-relative offset
* @param {number} cb is number of bytes to check (1, 2 or 4)
* @param {boolean} [fSuppress] is true to suppress any errors
* @return {number} corresponding physical address if valid, or ADDR_INVALID if error (TODO: No error conditions exist yet)
* @return {number} corresponding physical address if valid, or ADDR_INVALID if error (TODO: No error conditions yet)
*/
X86Seg.prototype.checkReadReal = function checkReadReal(off, cb, fSuppress)
{
@ -281,7 +294,7 @@ X86Seg.prototype.checkReadReal = function checkReadReal(off, cb, fSuppress)
* @param {number} off is a segment-relative offset
* @param {number} cb is number of bytes to check (1, 2 or 4)
* @param {boolean} [fSuppress] is true to suppress any errors
* @return {number} corresponding physical address if valid, or ADDR_INVALID if error (TODO: No error conditions exist yet)
* @return {number} corresponding physical address if valid, or ADDR_INVALID if error (TODO: No error conditions yet)
*/
X86Seg.prototype.checkWriteReal = function checkWriteReal(off, cb, fSuppress)
{