Re: [Freedos-kernel] Re: 32RTM bug

[Michael D. <Fre...@de...>]

At 06:44 PM 8/10/2004 -0500, I wrote:
>At 11:12 AM 8/11/2004 +1200, Bart Oldeman wrote:
>>On Tue, 10 Aug 2004, Michael Devore wrote:
>>
>> > Some way or another, it looks 32RTM is unhappy with what is going on with
>> > the stack on the call to function 34h.  I don't think the InDOS pointer
>> > itself is what causes the failure because the exception can occur 
>> during or
>> > immediately after return from the Get InDOS simulate call.
>>
>> >From your story it sounds that the int21 entry code uses too much
>>space on the user stack.
>
>Before someone invest too much of their life, I suppose the location could 
>be an artefact of the debugger interacting with InDOS, but it doesn't look 
>like it.

Problem is definitely the INT 31h simulate real mode interrupt Get InDOS 
function.  If I patch out the function to simply put a zero in the returned 
ES:BX pointer, 32RTM goes resident without kicking out an exception.  Of 
course, it no longer uses the InDOS flag properly, assuming it ever does 
use it.

Anyway, that's as far as I can go with what I see.  It's a problem with INT 
21h DOS function 34h when called from pmode through the Borland DPMI server 
via INT 31h.  Hopefully a kernel person can either fix it or call 
shenanigans on Borland.