Commit Graph

36 Commits

Author SHA1 Message Date
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Bruce Evans
3581d64b8d Fixed type mismatches in args to __syscall(). One for mmap() broke on
i386's with 64-bit longs -- the padding between mmap()'s 5th and 6th
is an int, not a long.  The other mismatches were benign.
1998-12-27 15:47:15 +00:00
John Polstra
0fbd9e9828 Remove the include of <dlfcn.h> from crt0.c; it is not needed now
that the dl* trampolines have been moved into libc.

Move dlfcn.h from src/lib/csu/i386 into src/include.  Nothing in
src/lib/csu/i386 uses it any more.
1998-02-11 04:57:25 +00:00
John Polstra
645c4be38a Move the trampolines for dlopen and related functions from crt0.o
into libc.  This reduces the size of every dynamically linked
executable by 248 bytes, and it reduces the size of static executables
by a lesser amount.  It also eliminates some global namespace
pollution.

With this change in place, the source for dlfcn.h should probably
be moved to "/usr/src/include".  I'll save that for another day.

Compatibility note:  Programs which use dlopen, if compiled on
systems with this change, will not run on systems with a libc from
prior to this change.  Very few programs use dlopen, so I think
that is OK.
1998-02-09 06:05:25 +00:00
John Polstra
663690b388 Implement dladdr. 1998-02-06 16:46:46 +00:00
Brian Somers
9822c98d98 const correctness for dl*() 1997-11-22 03:34:46 +00:00
John Polstra
7e7344e2f4 Implement dlsym(RTLD_NEXT, symbol). 1997-08-02 04:56:44 +00:00
Peter Wemm
7e546392b5 Revert $FreeBSD$ to $Id$ 1997-02-22 15:12:41 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
John Polstra
65eabc3424 Set the "crt_ldso" member of the crt-to-ld.so interface structure. This
was apparently overlooked at the time the member was added.  Its absence
causes some error messages from the dynamic linker to begin with
"(null):" instead of with the pathname of the dynamic linker as they
should.

I am also adding a work-around to the dynamic linker, to cope with
legacy binaries that were built with older versions of crt0.
1997-01-11 23:59:34 +00:00
Peter Wemm
fbde87863d When linking with no rtld support, provide stub dl*() functions that
just return errors.  This removes the need for awful hacks like that in
our build of libtcl which would get link errors when linked static.

John Polstra once mentioned that this was on his "todo" list.

Note that one can use:
  cc -Wl,-Bstatic -o foo foo.o
and get an executable that has it's libraries statically linked, but has
a fully functional runtime linker so the executable can call dlopen() and
have it work.  (I've tested this)
1996-12-28 17:10:52 +00:00
Steve Price
3d78e32756 Remove garbage initcode reference so that 'gcc -Dlint ...'
will compile without error.
1996-10-06 03:19:26 +00:00
Peter Wemm
4e89f352f0 Support crt0 <-> ld.so interface version 4. This should be both backwards
and forwards compatable with version 3.  This is needed to enable storing
a run-time library path in the dynamic linking headers.  The crt startup
tries version 4 first, and falls back to version 3, so an executable that
is linked on -current will work with the ld.so on 2.1.x and less.

Reviewed by: nate, jdp
Obtained from: NetBSD
1996-10-01 00:54:48 +00:00
Nate Williams
98c4ae7b2b Back out the thread_init code in order to allow -current to bootstrap
from -stable, until a better solution is found.

Submitted by:	Consensus of mailing list and the almighty Jordan :)
1996-01-30 05:55:20 +00:00
Julian Elischer
f70177e76e Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
Andrey A. Chernov
3e912c9dee Remove my locale hack. Sigh. 1995-11-02 12:42:42 +00:00
Poul-Henning Kamp
05fc2de514 Clean up and make code (more) readable. 1995-10-29 09:49:21 +00:00
Poul-Henning Kamp
ee61b5a715 put the _getenv and _strncmp under #ifdef DEBUG, which is the only time
they are used.  Saves a few bytes here and there, nothing major.
1995-10-18 15:56:55 +00:00
Nate Williams
4d2131fbc9 Fixup the "ld.so failed" message for the case when ld.so finds undefined
symbols.

An easy example to see this is to develop an X program which links
against Xt, but doesn't add -lX11 to the link line.  It will link fine,
but cause run-time errors by ld.so because of missing symbols used by Xt
defined in X11.  This patch makes the errors more readable.

Submitted by:	jdp@polstra.com (John Polstra)
1995-09-27 23:13:33 +00:00
Doug Rabson
82aaeb09ad Change ld.so to correctly load dependant libraries for dlopen and unload them
on dlclose.  Also correctly call constructors and destructors for libraries
linked with /usr/lib/c++rt0.o.
Change interpretation of dlopen manpage to call _init() rather than init()
for dlopened objects.
Change c++rt0.o to avoid using atexit to call destructors, allowing dlclose to
call destructors when an object is unloaded.
Change interface between crt0 and ld.so to allow crt0 to call a function on
exit to call destructors for shared libraries explicitly.

These changes are backwards compatible.  Old binaries will work with the new
ld.so and new binaries will work with the old ld.so.  A version number has
been introduced in the crt0-ld.so interface to allow for future changes.

Reviewed by:	GAWollman, Craig Struble <cstruble@singularity.bevc.blacksburg.va.us>
1995-06-27 09:53:27 +00:00
Poul-Henning Kamp
e9434bccf7 Remove an unused variable. 1995-02-24 07:51:13 +00:00
Jordan K. Hubbard
38f4fb1525 Support for more Sun compatible dlopen() and friends. Also added proper error
handling.
Reviewed by:    gj
Submitted by:   Mark Diekhans <markd@grizzly.com>
1995-02-07 13:27:29 +00:00
Andrey A. Chernov
662bfb6660 Call reduced (8-bit only) startup_setlocale() 1994-09-24 16:01:30 +00:00
Andrey A. Chernov
54335ac349 Change level of setlocale hack enabling from compile option STARTUP_LOCALE
to check (via getenv) environment variable "ENABLE_STARTUP_LOCALE" at
runtime.
Submitted by: me per Bruce suggestion
1994-09-19 02:00:21 +00:00
Andrey A. Chernov
f32a347542 Add (#ifdef'ed by STARTUP_LOCALE) following line to crt0.c
(void) setlocale(LC_ALL, "");

It will be easiest way now to make national chars available
for all ctype-oriented programs at once by simple:

setenv LANG Your_National_Charset

Default case (without "LANG" environment
variable) will be fully ANSI compatible (got "C" locale).

If "LANG" variable present, extention becomes active.

Effect of this extention is great: in one time all ctype
oriented programs can accept/print national characters
without any touching source/binary code, it is big win, IMHO.

This method is fully compatible with ISO8859-* and russian koi8-r
too (in general -- with all 8-bit character sets). I think
it is very useful.
I got this idea from Xenix locale implementation.

This extention is even never compiled in, unless you set
	setenv STARTUP_LOCALE
before rebuilding crt0.c or corresponding variable in /etc/make.conf
1994-09-18 22:21:04 +00:00
Garrett Wollman
b4162996d5 Make it work with new mmap syscall. 1994-08-05 17:53:07 +00:00
Rodney W. Grimes
f46145aa78 MAP_FILE is the default on mmap now, and is no longer defined just
like on a sun, so #define it to be 0 if we are running BSD >=199306.
1994-05-28 13:59:16 +00:00
Nate Williams
17682d0199 Allow NetBSD (old style) shared binaries to work. Probably not the
final solution but at least this gets folks running -current up again.
1994-02-16 19:26:39 +00:00
Jordan K. Hubbard
14a24404ef New dlopen, dlclose, etc al. For the new ld changes. 1994-02-13 20:53:11 +00:00
David Greenman
1799d2585e Implemented 'QMAGIC' a.out format correctly, and changed the default
output to be QMAGIC.
1994-01-03 18:35:54 +00:00
Paul Richards
bfa077712f shlib update:
Can get rid of local symbols with "ld -x -r" again.
Made LDSO #ifdef DEBUG.
1993-11-09 04:26:11 +00:00
Paul Richards
44d76bb777 Added shared libs support from NetBSD. 1993-11-04 01:09:18 +00:00
David Greenman
cd11d97905 Yanked out the 8 'addb %al,%al' (0xc000)'s out of the start of the
program. The idea was that these are 'alignment' crap, but the image
is 16byte-aligned without these. Location 0 still doesn't have a 0,
but who cares, binaries wil be built with page zero unmapped in the
near future.
1993-10-26 09:04:13 +00:00
Nate Williams
25a0fedd25 Added some support the new err(3) routines need
(Copied directly from NetBSD verbatim)
1993-06-29 04:34:12 +00:00
Paul Richards
52768b912b Upgrade to GCC 2.X 1993-06-18 02:04:48 +00:00
Rodney W. Grimes
5b81b6b301 Initial import, 0.1 + pk 0.2.4-B1 1993-06-12 14:58:17 +00:00