jwt27/djgpp-cvs

git mirror of cvs.delorie.com:/cvs/djgpp

djgpp-cvs's Issues

Fix faulty keyboard handler

https://www.vogons.org/viewtopic.php?p=818225#p818225
Patch

--- orig/src/libc/go32/exceptn.S        2002-12-21 21:08:39.000000000 -0800
+++ ./exceptn.S 2020-01-18 18:37:27.397176800 -0800
@@ -337,6 +337,15 @@
        je      6f
        orb     $2,%ah  /* If RShift is set, set LShift as well */
 6:
+        movb    %ah,%al
+       andb    %cs:___djgpp_sigint_mask, %ah   /* Mask off irrelevant bits */
+       cmpb    %cs:___djgpp_sigint_key+1, %ah  /* Test for SIGINT */
+        je      60f
+        movb    %al,%ah
+       andb    %cs:___djgpp_sigquit_mask, %ah  /* Mask off irrelevant bits */
+       cmpb    %cs:___djgpp_sigquit_key+1, %ah /* Test for SIGQUIT*/
+       jne     Lkbd_chain
+60:
        inb     $0x60,%al                       /* Read the scan code */
 99:
        movb    %ah,%bh                         /* Save KB status */

Fix toolchain without recompiling by replacing the object file within libc

$ i686-pc-msdosdjgpp-gcc -c -o exceptn.o exceptn.S
$ i686-pc-msdosdjgpp-ar ru /opt/djgpp/i686-pc-msdosdjgpp/lib/libc.a exceptn.o

Affected DJGPP apps (for eg. Vim) can then be rebuilt to replace the faulty keyboard handler.

There is no djgpp.env file after unzipping the archives on MS-DOS 5.0

I did this:
UNZIP32.EXE GCC1030B.ZIP
UNZIP32.EXE CSDPMI7B.ZIP

remove SS switching on __dpmi_int()

Please see this commit:
stsp@f143418
Do you know why SS was touched there?
I think it is a plain bug (may be wrong of course),
and I'd like djgpp to have that fixed too,
in which case I will be able to remove the
"emergency stack" from all clients.

support stubs >2K

Currently the stub size is limited to 2K,
and da81e26
sucks the last bytes of it.
DJ have confirmed to me that there is
no hard limit, and in fact, if you enlarge
the msg in the aforementioned patch,
things will still work. But, for example,
strip will fail to recognize the executable
format.
So there are just a few bugs on a binutils
side to fix, and the large stub will work.

_osmajor checks should be removed

There are a couple of cases, most
notably in sys/vfs/statfs.c, where
the libc checks if( 7 <= _osmajor && _osmajor < 10 )
and uses an extended functionality,
falling back to the basic functionality
otherwise.
The extended functionality block is
however properly implemented: it
falls back to the basic functionality
anyway, if the extended functions
failed.
There are many DOS clones around,
for which this check fails. Since the
code have the proper fallbacks anyway,
the _osmajor checks should be removed.