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Stack trace command

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This commit is contained in:
Jeff Parsons 2015-05-31 16:12:01 -07:00
commit 6a4d7c748c
1 changed files with 37 additions and 4 deletions
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41
modules/pcjs/lib/debugger.js
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@ -132,8 +132,8 @@ function Debugger(parmsDbg)
* Finally, for TEMPORARY breakpoint addresses, we set fTempBreak to true, so that they can be
* automatically cleared when they're hit.
*/
this.dbgAddrNextCode = this.newAddr(0, 0);
this.dbgAddrNextData = this.newAddr(0, 0);
this.dbgAddrNextCode = this.newAddr();
this.dbgAddrNextData = this.newAddr();
/*
* This maintains command history. New commands are inserted at index 0 of the array.
@ -146,7 +146,7 @@ function Debugger(parmsDbg)
* fAssemble is true when "assemble mode" is active, false when not.
*/
this.fAssemble = false;
this.dbgAddrAssemble = this.newAddr(0, 0);
this.dbgAddrAssemble = this.newAddr();
/*
* aSymbolTable is an array of 4-element arrays, one per ROM or other chunk of address space.
@ -229,7 +229,7 @@ if (DEBUGGER) {
0x13: Messages.FDC,
0x15: Messages.CHIPSET,
0x16: Messages.KEYBOARD,
// 0x1a: Messages.RTC, // ChipSet contains its own specialized messageInt() handler for the RTC
// 0x1a: Messages.RTC, // ChipSet contains its own custom messageInt() handler for the RTC
0x1c: Messages.TIMER,
0x21: Messages.DOS,
0x33: Messages.MOUSE
@ -246,6 +246,7 @@ if (DEBUGGER) {
'g [#]': "go [to #]",
'h [#]': "halt/history",
'i [#]': "input port #",
'k': "stack trace",
'l': "load sector(s)",
'm': "messages",
'o [#]': "output port #",
@ -5182,6 +5183,35 @@ if (DEBUGGER) {
}
};
/**
* doStackTrace()
*
* @this {Debugger}
*/
Debugger.prototype.doStackTrace = function()
{
var cFrames = 0;
var dbgAddrCall = this.newAddr();
var dbgAddrStack = this.newAddr(this.cpu.getSP(), this.cpu.getSS());
while (cFrames++ < 10) {
var fFound = false;
while ((dbgAddrStack.off >>> 0) < (this.cpu.regLSPLimit >>> 0)) {
dbgAddrCall.off = this.getWord(dbgAddrCall);
dbgAddrCall.sel = this.cpu.segCS.sel;
/*
* Check the near-call case first
*/
dbgAddrCall.off -= 3;
if (this.getByte(dbgAddrCall) == X86.OPCODE.CALL) {
fFound = true;
}
dbgAddrStack.off += this.cpu.segCS.dataSize;
}
if (!fFound) return;
this.println(this.getInstruction(dbgAddrCall));
}
};
/**
* doStep(sCmd, sCount)
*
@ -5469,6 +5499,9 @@ if (DEBUGGER) {
case "i":
this.doInput(asArgs[1]);
break;
case "k":
this.doStackTrace();
break;
case "l":
this.doLoad(asArgs);
break;