Debug a dos program ?

[Sylvain Petreolle]

Trying to debug a simple dos program (for example the eicar antivirus
test string, attached), I cant figure how to do it with wine.

- Loading a debugger like microsoft's debug or the freedos one doesnt
work, if you try to do a 't' to go to the next instruction, you go into
the debugger.
Do a "walk process" and your program isnt here.

- Using winedbg doesnt work too.
Doing a 'cont' seems to launch the program and it exits.
trying to add delayed A-bp
        f00d 0000:0805a000
Stopped on breakpoint 1 at 0x0805a000 (__wine_exe_main [wine.spec.c:69]
in wine)
69      {
In 32-bit mode.
Wine-dbg>cont
<... Loading dlls debug info snipped>
Warning: unprotecting the first 64KB of memory to allow real-mode
calls.
         NULL pointer accesses will no longer be caught.
err:int:DOSVM_Loop MsgWaitForMultipleObjects returned unexpected value.
Invalid address for breakpoint 1, disabling it
Invalid address for breakpoint 2, disabling it
Process of pid=0000000a has terminated
Wine-dbg>

Am I missing something here ?

=====
Sylvain Petreolle
spetreolle at users.sourceforge.net 
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