Commit Graph

102 Commits

Author SHA1 Message Date
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
Jordan K. Hubbard
f2c81e4dd7 Install the header files. 1995-02-09 08:00:20 +00:00
Jordan K. Hubbard
2a947a4bbf Add two parts of Mark's/Gary's dlopen() changes that I missed before. 1995-02-08 17:56:27 +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
Bruce Evans
459e429cab Remove dead code. gmon stuff is now done better in libc/gmon an
<machine/profile.h>.  The old version was writing an incomplete
header without the profrate field that is necessary to handle the
current faster profiling clock.  The counters that are where the
the profrate should be are usually 0 and gprof converts a profrate
of 0 to hz so the old version gave times too large by a factor of
profhz/hz = 10.24.
1994-08-22 15:13:41 +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
f2523a7e72 From Jordan via. Paul K.
This fixes the problems Warner's having with ctors not being called
again with the latest round of ld changes and updates the file-names to what
Paul is using now.

The name change will not affect anything as we are not (yet) using it.
1994-03-09 17:12:59 +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
Jordan K. Hubbard
4344c041d1 Adding embryonic C++ shared lib support (all tests positive so far). 1993-12-24 02:11:37 +00:00
Andrey A. Chernov
fe596e6795 -r option incorrectly removed:
it is impossible to make gcrt0.o from moncrt0.o and gmon.o without it.
1993-11-18 00:08:03 +00:00
Paul Richards
b2c0440d02 Removed all the ld -x -r stuff -- paranoia. 1993-11-16 02:22:16 +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
423a102938 Removed install -d line since our install doesn't support the -d
option.
1993-11-07 03:05:40 +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
Charlie Root
dcd59e0868 Added ${COPY} knob to the install commands 1993-07-03 00:21:21 +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