Commit Graph

74 Commits

Author SHA1 Message Date
Mark Murray
4cd0119367 Do not use __progname directly (except in [gs]etprogname(3)).
Also, make an internal _getprogname() that is used only inside
libc. For libc, getprogname(3) is a weak symbol in case a
function of the same name is defined in userland.
2002-03-29 22:43:43 +00:00
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
Bruce Evans
d07b0a6163 Avoid using ld -O (as in bsd.lib.mk).
Fixed `make cleandepend'.  The default is null because SRCS is null.
1998-12-27 15:24:21 +00:00
Bruce Evans
67b780b03b Fixed double slashes in pathnames. 1998-05-31 11:32:38 +00:00
Søren Schmidt
cabb97dcbf ELF preparation step 2:
Move a.out libraries to /usr/lib/aout to make space for ELF libs.
Make rtld usr /usr/lib/aout as default library path.
Make ldconfig reject /usr/lib as an a.out library path.
Fix various Makefiles for LIBDIR!=/usr/lib breakage.

This will after a make world & reboot give a system that no
longer uses /usr/lib/*, infact one could remove all the old
libraries there, they are not used anymore.

We are getting close to an ELF make world, but I'll let this
all settle for a week or two...
1998-05-26 20:12:56 +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
Eivind Eklund
920207a8e9 ${TARGET} -> ${.TARGET}
Tiny pointed hat goes to:	Our Makefile-meister.
1998-01-12 18:29:02 +00:00
Brian Somers
9822c98d98 const correctness for dl*() 1997-11-22 03:34:46 +00:00
Satoshi Asami
fc702c5bc8 Make this file p-make clean. (Use "ld -O foo" instead of "ld; mv
a.out foo".)

Reviewed by:	bde (actually more like "Suggested by")
1997-10-11 02:37:42 +00:00
Wolfram Schneider
bf5cbf3551 Sort cross refereces in section SEE ALSO. 1997-09-29 19:11:55 +00:00
John Polstra
7e7344e2f4 Implement dlsym(RTLD_NEXT, symbol). 1997-08-02 04:56:44 +00:00
Mike Smith
dff682856f Use our copy of dlfcn.h, not the version in /usr/include, which may not
be up-to-date when we are building.
Submitted by:	Terry Lambert <terry@lambert.org>
1997-04-30 03:12:09 +00:00
John Polstra
f3112eb32a Declare the constructor/destructor linker sets as extern rather than
common.  Add one do-nothing element to each set.  This ensures that
the linker realizes that they are linker sets rather than simple
commons, and makes it possible to link c++rt0.o into every shared
library regardless of whether it is a C++ library or not.  Without
this change, the constructors and destructors in the main program
could be executed multiple times.

This change is going to make it possible to get rid of the
CPLUSPLUSLIB makefile variable once and for all.  It is a piece of
the solution to PR gnu/3505 (gcc -shared).  Finally, it fixes a
heretofore unreported bug:  If CPLUSPLUSLIB was set in a makefile
for a C++ shared library that had no static constructors or
destructors in it, then the main program's constructors and
destructors would be executed multiple times.
1997-04-09 19:14:31 +00:00
John Polstra
bb789b9ea2 Fix an error in the previous revision that caused make world breakage. 1997-04-02 16:49:18 +00:00
Bruce Evans
67fd3b9895 Simplified install rule. 1997-04-01 13:53:16 +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
f08cd1247b Convert to mdoc format.
Add descriptions of RTLD_LAZY and RTLD_NOW.
Correct the synopsis to agree with the actual function prototypes.
Add clarifications of a few things.
Clean up the wording in a few places.
1997-01-12 19:55:49 +00:00
John Polstra
8a8c5a99ee Add definitions of RTLD_LAZY and RTLD_NOW. 1997-01-12 18:37:46 +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
Bruce Evans
fd0a86436e Use ${COPY} instead of -C for installing non-source files. crt*.o
should be installed using the same flag as libraries, but ${COPY}
is currently used for libraries.
1997-01-01 04:52:55 +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
Marc G. Fournier
d453b6a53d Fixed prototyping of dlopen/dlsym in dlfcn.h, to match how crt0.c defines
it and link.h prototypes it

Error of my ways pointed out by Peter
1996-10-08 01:41:51 +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
Peter Wemm
dce96329a9 cmp -s || install -c --> install -C 1996-08-30 01:41:52 +00:00
Wolfram Schneider
9fb933075e `mv'' -> `mv -f''
``rm'' -> ``rm -f''
so mv/rm may not ask for confirmation if you are not root
1996-05-07 23:19:49 +00:00
John Polstra
89370a31f2 Changed the dimensions of __CTOR_LIST__ and __DTOR_LIST__ from 0
to 2.  This makes them agree with the declarations in libgcc, and
clears the way once again for linking c++rt0.o into all libraries,
and eliminating CPLUSPLUSLIB from <bsd.lib.mk>.  (I have not made
that change yet, because there is still a bootstrapping problem
for "make world".)

Also, removed a check which ensured that the constructor count in
the first word of __CTOR_LIST__ was greater than zero before
traversing the list.  I had added that check earlier, but it is no
longer necessary, now that there is guaranteed to be at least 2
words in __CTOR_LIST__.
1996-02-20 04:07:26 +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
John Polstra
d5489b0d8f Check the count in the first word of __CTOR_LIST__ before executing
the loop that invokes the static constructors.  That makes it safe
to link c++rt0.o into any shared library, even one that does not
have any static constructors.  Formerly, doing that would cause a
bus error.  If the library has no static constructors, __CTOR_LIST__
comes out as a simple 4-byte COMMON region, and it does not have
the usual NULL word that terminates the list of constructors.  This
caused the old code to "call" a garbage address via the non-existent
entry __CTOR_LIST__[1].

The analogous code that invokes the static destructors was already safe.

This change is fully backward-compatible.

Reviewed by:	dfr@render.com (Doug Rabson)
1996-01-15 17:53:25 +00:00
Peter Wemm
6065a0be11 This commit was generated by cvs2svn to compensate for changes in r13122,
which included commits to RCS files with non-trunk default branches.
1995-12-30 19:02:48 +00:00
Peter Wemm
a5b996a7ec recording cvs-1.6 file death 1995-12-30 19:02:48 +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
Bruce Evans
ccbc94648a Fixed dependencies for scrt0.o.
Build a static gcrt0.o (sgcrt0.o) too.  Currently only the dynamic gcrt0.o
is used, although -pg forces -static.
Sorted the .o targets.
1995-10-22 18:36:47 +00:00
Poul-Henning Kamp
6b44b1a3fa -fomit-frame-pointer is becomming an increasingly popular optimization,
so before somebody screws up royally, make sure this always works by
adding a -fno-omit-frame-pointer here.
1995-10-20 20:05:15 +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
David Greenman
14c175f7a9 Create a scrt0.o file that specifically excludes the shared-lib support.
This will be used for -static programs.
1995-10-18 04:19:00 +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
Bruce Evans
97cefc5891 Install source files with the -c flag, not with the optional flag ${COPY}. 1995-08-06 12:37:41 +00:00
Bruce Evans
48cfb668fc Change install' to ${INSTALL}' so that default install flags can be
specified in the top level Makefiles.

Previously I missed dozens of Makefiles that skip the install after
using `cmp -s' to decide that the install isn't necessary.
1995-08-06 12:24:38 +00:00
Garrett Wollman
4fa53f8ca6 Numerous Makefile fixes:
1) Do dependencies.
2) Install all appropriate links to manual pages.
3) Install header file in `beforeinstall' like all the rest.
4) Install header file only if changed.
5) Install object files only if changed.
1995-06-30 15:30:35 +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
Rodney W. Grimes
6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Poul-Henning Kamp
139762f2be Install the dlopen.3 manpage. 1995-03-30 06:40:31 +00:00
Poul-Henning Kamp
e9434bccf7 Remove an unused variable. 1995-02-24 07:51:13 +00:00