Commit Graph

181 Commits

Author SHA1 Message Date
Peter Wemm
7b001f8ee5 These files were moved elsewhere (sbin/ldconfig, libexec/rtld-aout,
usr.bin/ldd) as they stand alone and are under bsd-style license.
1998-06-01 14:11:28 +00:00
Peter Wemm
7ef7c681ba Look for files in their new locations. 1998-06-01 14:08:01 +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
Søren Schmidt
77dfb966d9 ELF preparation step 1:
Move our old a.out utils to /usr/libexec/aout.
Enable binutils and put the utils in /usr/libexec/elf
Enable objformat, a little helper program that calls the right
utils based on /etc/objformat and $OBJFORMAT.

This will enable the ELF generating tools.
Remember that this is only step one, the system is still compiled
and run in a.out format ONLY.

Problem left to solve: The BSD manpages wins over the GNU equivalents
as the are installed last. We need to distinguish between the manpages
somehow...
1998-05-25 17:34:42 +00:00
Doug Rabson
c474c6d309 Add ELF support. 1998-05-01 08:40:11 +00:00
John Polstra
663690b388 Implement dladdr. 1998-02-06 16:46:46 +00:00
Alexander Langer
1295abe226 Removed /etc/ld.so.conf reference from FILES section (people get
confused when they can't find it), but leave the reference to it
as being a standard filename (which doesn't imply that it exists).

Discussed with:	jkh
1998-01-01 02:31:47 +00:00
Tim Vanderhoek
dfb9495b2a Use consistent spelling,
writeable -> writable (recall prior debate over this? :-)
	initialise -> initialize
	recognise -> recognize

Merry Christmas! :)
1997-12-25 09:36:42 +00:00
John Polstra
6210388a93 Make emacs work again. This is a workaround for the fact that the
emacs a.out file, self-generated by emacs's "unexec" function in
"unexsunos4.c", is invalid.  In particular, its "_end" symbol has
the wrong value.  The dynamic linker was using the value of that
symbol to initialize its sbrk break level.

The workaround is to peek at the executable's a.out header in
memory, and calculate what "_end" should be based on the segment
sizes.

I will work out a fix for emacs and send it to the FSF.  This
dynamic linker workaround is still worthwhile, if only to avoid
forcing all emacs users to build a new version.

Note: xemacs gives a bogus warning at startup, for related reasons.
The warning is harmless and can safely be ignored.  I will send a
patch to the xemacs maintainers to get rid of it, and meanwhile
add a patch file to our port.
1997-12-05 02:06:37 +00:00
John Polstra
08bdd3d27d Get rid of the dynamic linker's internal malloc package, and arrange
things so that it uses the same malloc as is used by the program
being executed.  This has several advantages, the big one being
that you can now debug core dumps from dynamically linked programs
and get useful information out of them.  Until now, that didn't
work.  The internal malloc package placed the tables describing
the loaded shared libraries in a mapped region of high memory that
was not written to core files.  Thus the debugger had no way of
determining what was loaded where in memory.  Now that the dynamic
linker uses the application's malloc package (normally, but not
necessarily, the system malloc), its tables end up in the regular
heap area where they will be included in core dumps.  The debugger
now works very well indeed, thank you very much.

Also ...

Bring the program a little closer to conformance with style(9).
There is still a long way to go.

Add minimal const correctness changes to get rid of compiler warnings
caused by the recent const changes in <dlfcn.h> and <link.h>.

Improve performance by eliminating redundant calculations of symbols'
hash values.
1997-11-29 03:32:48 +00:00
John Polstra
873954b327 In the "ldd -v" output, display the N_AUX information for each
symbol.  It indicates whether the symbol refers to a function or a
data object.
1997-11-28 19:34:27 +00:00
Poul-Henning Kamp
d030d2d2ae Many places in the code NULL is used in integer context, where
plain 0 should be used.  This happens to work because we #define
NULL to 0, but is stylistically wrong and can cause problems
for people trying to port bits of code to other environments.

PR:		2752
Submitted by:	Arne Henrik Juul <arnej@imf.unit.no>
1997-09-18 14:08:40 +00:00
Wolfram Schneider
f6b31571f6 spelling corrections.
PR: docs/4450
Submitted by: josh@quick.net
1997-09-13 16:01:53 +00:00
John Polstra
170fa4e888 Touch up the code that implements "ldd -v".
Bring the style of sods.c into better conformance.  Add code to
print the contents of each datum being relocated.  Correct the logic
that distinguishes between programs, shared libraries, and object
files.  Make the entire program "-Wall" clean.
1997-09-02 21:54:39 +00:00
John-Mark Gurney
46657c7e77 fix a few spelling changes
Submitted by: Josh Gilliam

Closes PR's: 4429, 4431-4438

PS: He has agreed to submit all contrib fixes back to the original author.
1997-08-30 12:22:49 +00:00
Steve Price
bd673ff4e7 .Ar -l -> .Fl l
PR:		docs/3682
Submitted by:	Kazuo Horikawa <k-horik@yk.rim.or.jp>
1997-08-23 21:59:41 +00:00
Peter Wemm
d4ba5766dd Add -R (rescan or refresh) option to rescan and rebuild the hints
file based on the previous list of directories stored there which
should overcome a weakness of the '-m' switch which can only add
libs.  This is an ideal way of updating the hints list after adding
or removing a shlib since it will remove entries that are gone and
doesn't need to have all the directories spelled out each time.
(eg: rm -f /usr/lib/libtcl75*; ldconfig -R)  This only works for
version 2 hints files (which we've been generating for a year or
so) which store the path.
1997-08-22 04:42:12 +00:00
Nate Williams
39f2a9e2db - In dlsym(), if the lookup fails using the original symbol, prepend an
underscore and try looking it up again.  This is a non-issue if we
  switch to ELF.

Reviewed by:	sef, jdp
1997-08-19 23:33:45 +00:00
John Polstra
7e7344e2f4 Implement dlsym(RTLD_NEXT, symbol). 1997-08-02 04:56:44 +00:00
Jordan K. Hubbard
571b472b20 Allow ldconfig to accept files (containing directory paths) as well as
directory paths.
Reviewed by:	jkh & jdp
Submitted by:	Hans Zuidam <hans@brandinnovators.com>
1997-07-11 14:45:41 +00:00
Bruce Evans
1dce44f3ea Configure static linkage in the normal way (default to -static using
NOSHARED?= yes).
1997-06-29 21:40:54 +00:00
Bruce Evans
29fc5d6403 Configure static linkage in the normal way (default to -static using
NOSHARED?= yes).

Split long lines.
1997-06-29 21:36:33 +00:00
Poul-Henning Kamp
8de2b8b504 BYOC - Bring Your Own Calloc(3)
Someday I'm going to face the music and dispose of this private malloc copy.
1997-06-22 17:48:35 +00:00
John Polstra
503c715b84 Fix some old typos and misspellings. 1997-05-31 04:28:53 +00:00
Doug Rabson
12510ea316 Document new -Bforcedynamic flag and -assert pure-text.
Reviewed by:	jdp
1997-05-29 15:34:34 +00:00
Masafumi Max NAKANE
d5fb0dffb4 Typo fix.
PR:		3693
Submitted by:	Kazuo Horikawa <k-horik@yk.rim.or.jp>
1997-05-27 13:46:40 +00:00
Doug Rabson
3c0a9567e5 Changes to support the kernel linker:
Add a -Bforcedynamic option which generates a dynamic object even
	if no shared libraries were given in the link.

	Make RRS in text section warnings conditional on "-assert pure-text"
	so that I can link non-PIC kernel modules without tons of link
	errors.  Changes to bsd.lib.mk to follow.

	Fix a couple of bugs exposed by the fact that the kernel is not
	linked at zero.

Reviewed by:	jdp
1997-05-13 10:23:47 +00:00
John Polstra
aafb797228 Fix a bug that caused the relocs for linker set members in shared
libraries to come out as 1-byte relocations instead of 4-byte
relocations.

Submitted by:	Doug Rabson <dfr@nlsystems.com>
1997-04-30 05:18:08 +00:00
Bruce Evans
d836aa8d19 Don't complain about no input files for `ld -f'. This fixes spurious
(ignored :-() errors for `make depend' in /sys/i386/boot/*.  It's
natural for there to be no libraries there and inconvenient to check
for this in bsd.prog.mk.
1997-04-25 19:43:19 +00:00
John Polstra
ec77d02207 Fill the padding at the end of the runtime strings with zeros,
instead of leaving random data there.  This makes the linker's
output files more deterministic -- an important property for
regression tests.
1997-04-25 15:26:12 +00:00
Bruce Evans
9453d60b10 Fixed `make depend' and related bogons. LDFLAGS was used for
ld-specific flags.  LDFLAGS is really for ld-related flags for cc,
not for ld, and some flags, e.g., -Bshareable, mean completely
different things to cc and ld.  Having the wrong things in LDFLAGS
also broke the standard ${PROG} target.  This was kludged around
by using a special rule that depended on LDFLAGS being bogus.
Fixing `make depend' broke the special rule but fixed the standard
rule (except in the DESTDIR case, which was handled more strictly
here than elsewhere).
1997-04-16 11:31:32 +00:00
Bruce Evans
dba161abd4 Don't print nonexistent library names for `ld -f [-Lfoo] -lbar'. A
dependency on `bar' is very unlikely to be correct.

This is a quick fix for broken dependencies in gdb and many other
places.  The dependencies on internal libraries are now missing
instead of wrong when `make depend' is run before the libraries
are created.
1997-04-11 17:08:56 +00:00
John Polstra
32d41c2b07 Add a new "-f" option to the linker, to print the resolved paths
of all the files and libraries in the command line.

Submitted by:	bde (Bruce Evans)
1997-03-22 02:59:40 +00:00
Peter Wemm
fce15c9ab3 Revert $FreeBSD$ to $Id$ 1997-02-22 15:48:31 +00:00
John Polstra
725f849afd Fix a bug involving alias (N_INDR) symbols. When building a shared
library with a shared object dependency that contained alias symbols,
the linker incorrectly counted the number of symbols that would be
written, resulting in a fatal internal error.  Since our libc now
contains some alias symbols (in "net/res_stubs.c"), this was
sufficient to tickle the bug:  "ld -Bshareable foo.so -lc".  To
fix it, I moved the accounting of alias symbols to a later point
in the processing, where it is possible to count only those symbols
that will actually be written to the output file.

This fix is well-confined to affect alias symbols only.  I have
tested it with a full "make world".  I am going to merge it into
-2.2 after a few more days of living with it in -current.
1997-02-01 20:28:38 +00:00
John Polstra
18be4a71df Use xmalloc instead of malloc in two places, so that out-of-memory
conditions will be detected.

Submitted by:	Philippe Charnier <charnier@xp11.frmug.org>
1997-01-24 00:07:03 +00:00
John Polstra
ac6c268b3d Pay attention to the environment variable "LD_IGNORE_MISSING_OBJECTS".
If it is set to a nonempty string, then simply skip any missing
shared libraries.  This came up in a discussion long ago as a
potentially useful feature at sysinstall time.  For example, an
X11 utility could be used without the X libraries being present,
provided the utility had a mode in which no X functions were actually
called.
1997-01-17 20:22:18 +00:00
John Polstra
20995a4fcc If a library is found in the hints file, but the library doesn't exist,
ignore the hint.

This is a straightforward fix, and it should go into 2.2 after a burn-in
period of a few days.

Noticed by:	bde
1997-01-14 17:53:55 +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
Wolfram Schneider
af20215665 Sort cross references. 1997-01-13 00:25:51 +00:00
John Polstra
d956f8a388 Use the RTLD_NOW symbol, now that it is defined in <dlfcn.h>. 1997-01-12 19:59:26 +00:00
John Polstra
aeea55e459 Correct typos and spelling errors. 1997-01-12 00:19:14 +00:00
John Polstra
0db65949ae Add support for the LD_BIND_NOW environment variable. If it is set to a
nonempty string, then function calls are relocated at program start-up
rather than lazily.  This variable is standard on Sun and SVR4 systems.

The dlopen() function now supports both lazy and immediate binding, as
determined by its "mode" argument, which can be either 1 (RTLD_LAZY) or
2 (RTLD_NOW).  I will add defines of these symbols to <dlfcn.h> as soon
as I've done a little more checking to make sure they won't cause
collisions or bootstrapping problems that would break "make world".

The "LD_*" environment variables which alter dynamic linker behavior are
now treated as unset if they are set to the empty string.  This agrees
with the standard SVR4 conventions for the dynamic linker.

Add a work-around for programs compiled with certain buggy versions of
crt0.o.  The buggy versions failed to set the "crt_ldso" member of the
interface structure.  This caused certain error messages from the
dynamic linker to begin with "(null)" instead of the pathname of the
dynamic linker.
1997-01-12 00:16:36 +00:00
John Polstra
18c0f29eaa Set LD_TRACE_LOADED_OBJECTS to "1" instead of to "". The dynamic linker
now treats empty "LD_*" environment variables as if they were unset, per
the standard SVR4 conventions.
1997-01-12 00:10:57 +00:00
John Polstra
d3c677c7e0 Add support for the LD_BIND_NOW environment variable. If it is set to a
nonempty string, then function calls are relocated at program start-up
rather than lazily.  This variable is standard on Sun and SVR4 systems.

The dlopen() function now supports both lazy and immediate binding, as
determined by its "mode" argument, which can be either 1 (RTLD_LAZY) or
2 (RTLD_NOW).  I will add defines of these symbols to <dlfcn.h> as soon
as I've done a little more checking to make sure they won't cause
collisions or bootstrapping problems that would break "make world".
1997-01-12 00:09:11 +00:00
Joshua Peck Macdonald
c83a75eb30 Changes to make ld demangle C++ symbol names before printing
error messages containing them.

Reviewed by:	Peter Wemm
1997-01-11 05:51:03 +00:00
John Polstra
775f9cd54d For "ldd -v", print shared object dependencies that were specified as
pathnames (rather than as "-lfoo") correctly.
Closes PR bin/2404.
1997-01-10 02:51:00 +00:00
Steven Wallace
43d7fd0390 Fix spelling error in manpage. 1996-12-26 21:51:09 +00:00
Bruce Evans
45f4c7f97c Made the synopsis in the man page conform to the style guide.
Made the usage message conform to the style guide.

Don't use the implementation variable `__progname'.
1996-11-30 16:12:46 +00:00
Peter Wemm
b988beb8f9 make the Usage string match reality
Submitted by:  faried nawaz <fn@uidaho.edu>, PR#2075
1996-11-22 13:58:03 +00:00