static char GetKeyUpdate (void)
/* Wait for a key updating the windows in the background */
{
static unsigned char Win;
/* While there are no keys... */
while (!kbhit ()) {
switch (Win) {
case 0:
UpdateAsm ();
break;
case 1:
UpdateStack ();
break;
case 2:
UpdateCStack ();
break;
case 3:
UpdateDump ();
break;
}
Win = (Win + 1) & 0x03;
}
/* We have a key - return it */
return cgetc ();
}
static void Redraw (char Frame)
/* Redraw the display in case it's garbled */
{
/* Redraw the static stuff */
RedrawStatic (Frame);
/* Init the window contents */
UpdateAsm ();
UpdateReg ();
UpdateStack ();
UpdateCStack ();
UpdateDump ();
}
static char DumpHandler (void)
/* Get characters and handle them */
{
char c;
unsigned BytesPerPage = DumpFrame.fd_height * 8;
while (1) {
/* Read and handle input */
switch (c = GetKeyUpdate ()) {
case '+':
DumpAddr += BytesPerPage;
break;
case '-':
DumpAddr -= BytesPerPage;
break;
case 'g':
InputGoto (&DumpAddr);
break;
case 'o':
DumpHome ();
break;
case 'a':
#ifdef CH_CURS_UP
case CH_CURS_UP:
#endif
DumpAddr -= 8;
break;
case 'z':
#ifdef CH_CURS_DOWN
case CH_CURS_DOWN:
#endif
DumpAddr += 8;
break;
default:
return c;
}
/* Update the window contents */
UpdateDump ();
}
}
// convert information about decompressed CT Raw file to generic track data
void CCapsImage::ConvertDumpInfo(PCAPSWH wh)
{
PDISKTRACKINFO pti = di.pdt;
// use the number of revolutions that could be stored by pti at most or the number of revolutions sampled if less
int maxrev = min(CAPS_MTRS, wh->trkcnt);
pti->rawtrackcnt = maxrev;
// save the total size of all tracks decoded; don't have to recalculate later
pti->rawlen = wh->rawlen;
// prevent deallocating the buffer with the track data
wh->rawbuf = NULL;
// longest track found
int maxtracksize = 0;
// copy the track buffer start positions and sizes for the decompressed stream
for (int rev = 0; rev < maxrev; rev++) {
pti->trackdata[rev] = wh->trkbuf[rev];
pti->tracksize[rev] = wh->trklen[rev];
// find the longest track
if (pti->tracksize[rev] > maxtracksize)
maxtracksize = pti->tracksize[rev];
}
// save the original decoded timing data length
pti->rawtimebuf = wh->timbuf;
pti->rawtimecnt = wh->timlen;
// prevent deallocating the buffer with the timing data
wh->timbuf = NULL;
// allocate timing buffer the same size as the longest data track; +1 for alternate density
pti->timebuf = new UDWORD[maxtracksize + 1];
// calculate the sum of the timing samples
double timesum = 0;
for (int i = 0; i < pti->rawtimecnt; i++) {
timesum += pti->rawtimebuf[i];
}
// normalize all timing values; 1000 is the default value
// compensate for precision loss to integer values by using a remainder
int targetsum = pti->rawtimecnt * 1000;
int actsum = 0;
double tconv = (double)targetsum / timesum;
double rem = 0;
for (int i = 0; i < pti->rawtimecnt; i++) {
double vr = pti->rawtimebuf[i] * tconv + rem;
UDWORD vi = (UDWORD)vr;
rem = vr - vi;
pti->rawtimebuf[i] = vi;
actsum += vi;
}
// If there is still a difference between the targeted normalized values and the actual values
// add the remainder to the last timing.
// tdiff can't be more than the target since it represents the remaining sum of precision losses
int tdiff = targetsum - actsum;
if (tdiff > 0)
pti->rawtimebuf[pti->rawtimecnt - 1] += tdiff;
// generate 1 revolution of data as default, 5 for analyser
int trackcnt = (di.flag & DI_LOCK_ANA) ? 5 : 1;
// 5 revolutions if track update is not used
if (!(di.flag & DI_LOCK_UPDATEFD))
trackcnt = 5;
// the number of revolutions can't be more than the number of track revolutions decoded
if (trackcnt > maxrev)
trackcnt = maxrev;
// write track info
pti->trackcnt = trackcnt;
pti->overlap = -1;
pti->overlapbit = -1;
// reset random seed
pti->wseed = 0x87654321;
// request raw track updates/streaming
pti->rawdump = 1;
pti->rawupdate = 1;
// initialize lookup tables used by the weak bit detector
InitFirstBitTables();
// identify and record weak bit areas
FindWeakBits();
// first image update to initialize streaming
UpdateDump();
}
void DbgEntry (void)
/* Start up the debugger */
{
static unsigned char FirstTime = 1;
char c;
char done;
/* If this is the first call, setup the display */
if (FirstTime) {
FirstTime = 0;
/* Draw the window, default active frame is ASM frame */
RedrawStatic (WIN_ASM);
InitAsm ();
InitReg ();
InitStack ();
InitCStack ();
UpdateDump ();
}
/* Only initialize variables here, don't do a display update. The actual
* display update will be done while waiting for user input.
*/
AsmHome ();
UpdateReg (); /* Must update this (static later) */
StackHome ();
CStackHome ();
/* Wait for user input */
done = 0;
while (!done) {
c = Frames [ActiveFrame]->fd_func ();
switch (c) {
case '1':
case '2':
case '3':
case '4':
case '5':
ActivateFrame (c - '1', 0);
break;
case '?':
#ifdef CH_F1
case CH_F1:
#endif
HelpHandler ();
break;
case 'u':
#ifdef CH_F3
case CH_F3:
#endif
/* Go until return */
SetRTSBreak ();
done = 1;
break;
case 'h':
#ifdef CH_F4
case CH_F4:
#endif
/* Go to cursor, only possible if cursor not at current PC */
if (AsmAddr != brk_pc) {
DbgSetTmpBreak (AsmAddr);
done = 1;
}
break;
case ' ':
#ifdef CH_F7
case CH_F7:
#endif
SingleStep (1);
if (DbgTmpBreaksOk ()) {
/* Could set breakpoints */
done = 1;
}
break;
case '\n':
#ifdef CH_F8
case CH_F8:
#endif
SingleStep (0);
if (DbgTmpBreaksOk ()) {
/* Could set breakpoints */
done = 1;
}
break;
case 'c':
case 0:
done = 1;
break;
case 's':
/* Skip instruction */
brk_pc += DbgDisAsmLen (brk_pc);
InitAsm ();
break;
case 'r':
/* Redraw screen */
Redraw (ActiveFrame);
break;
case 'q':
/* Quit program */
clrscr ();
exit (1);
}
}
}