Commit Graph

228 Commits

Author SHA1 Message Date
Olivier Houchard
25a252899e Implement a dummy atomic_cmpset_32(). It should be safe to use it in rtld as
the signals are masked anyway.
2004-11-23 16:32:34 +00:00
John Baldwin
165204a75f Remove 80386 support from the ELF run time linker. 2004-11-16 20:45:51 +00:00
Ruslan Ermilov
1b1aa7e465 So do it like we do in usr.bin/tip/tip/Makefile. ;) 2004-11-14 22:18:31 +00:00
Jens Schweikhardt
443ceb1c7e Revert previous commit. As ru explains:
In the old world (as the surrounding comment in makefile says), there
 was the /usr/libexec/ld-elf.so.1 binary which is now a symlink to
 /libexec/ld-elf.so.1. To symlink, we need to make sure that the
 _target_ (and the target is /usr/libexec/ld-elf.so.1) doesn't have
 "schg" flag set. A real solution is to protect the chflags call only if
 target exists, like we do in usr.bin/tip/tip/Makefile.

Requested by:	ru
2004-11-14 21:14:06 +00:00
Jens Schweikhardt
6ccc491b4b Avoid an (ignored) error by invoking chflags on the link target, not the
symlink.

PR:		kern/73016
Submitted by:	John E. Hein <jhein@timing.com>
MFC after:	1 week
2004-11-14 12:47:20 +00:00
John Baldwin
2939195e46 Remove these unused files before any other archs include the same bogus
file.
2004-11-12 18:05:30 +00:00
Peter Wemm
24b4ec3d21 The 32 bit compatability ld-elf32.so.1 cannot use i386_set_ldt() when
running on an amd64 kernel.  Use the recently exposed direct %fs/%gs set
routines instead for the TLS setup of 32 bit binaries.
2004-11-06 03:32:07 +00:00
Ruslan Ermilov
dee651eb15 Introduce the PRECIOUSPROG knob in bsd.prog.mk, similar
to PRECIOUSLIB from bsd.lib.mk.  The side effect of this
is making installing the world under jail(8) possible by
using another knob, NOFSCHG.

Reviewed by:	oliver
2004-11-03 18:01:21 +00:00
Suleiman Souhlal
6c2a9753f2 Implement TLS relocations for powerpc.
Approved by:	grehan (mentor)
2004-11-02 09:47:01 +00:00
Suleiman Souhlal
5bbd22ee8d Do the TLS offset allocations before relocations, as otherwise there
can be overlap in the TLS offsets, if the relocations are done in a
certain order.

Approved by:	dfr, grehan (mentor)
2004-11-02 09:42:21 +00:00
Ruslan Ermilov
a35d88931c For variables that are only checked with defined(), don't provide
any fake value.
2004-10-24 15:33:08 +00:00
Olivier Houchard
34be051190 Don't try to relocate the dynamic loader in reloc_non_plt(). It has already
been done before.
2004-09-28 14:43:12 +00:00
Olivier Houchard
0e030636cb Use add instead of saving the sp in a register. 2004-09-28 14:41:15 +00:00
Olivier Houchard
9ac88d19dc Add stubs for TLS.
Arbitraly choose the 2nd variant until I figure out which one I should use.
2004-09-23 23:04:52 +00:00
Doug Rabson
fca32c746e Add stubs for powerpc TLS.
Submitted by: ssouhlal
2004-08-04 19:12:14 +00:00
Doug Rabson
017246d02f Add support for Thread Local Storage. 2004-08-03 08:51:00 +00:00
Stefan Farfeleder
5908d366fb Consistently use __inline instead of __inline__ as the former is an empty macro
in <sys/cdefs.h> for compilers without support for inline.
2004-07-04 16:11:03 +00:00
Thomas Moestl
d05bb9a2a6 Fix the problem that surfaced with the new binutils import on sparc64
(and that is for now being worked around by a binutils patch).

The rtld code tested &_DYNAMIC against 0 to see whether rtld itself
was built as PIC or not. While the sparc64 MD code did not rely
on the preset value of the GOT slot for _DYNAMIC any more due
to previous binutils changes, it still used to not be 0, so
that this check did work. The new binutils do however initialize
this slot with 0. As a consequence, rtld would not properly initialize
itself and crash.
Fix that by introducing a new macro, RTLD_IS_DYNAMIC, to take the role
of this test. For sparc64, it is implemented using the rtld_dynamic()
code that was already there. If an architecture does not provide its
own implementation, we default to the old check.

While being there, mark _DYNAMIC as a weak symbol in the sparc64
rtld_start.S. This is needed in the LDSCRIPT case, which is however
not currently supported for want of an actual ldscript.

Sanity checked with md5 on alpha, amd64, i386 and ia64.
2004-06-18 02:01:37 +00:00
Olivier Houchard
45ab3f5350 This comment should have been removed in the previous commit.
Spotted out by: marcus, simon
2004-06-17 19:01:53 +00:00
Olivier Houchard
f77d42ce5c Woohoo !
the latest binutils import mades this gross hack useless, so just remove it.
2004-06-17 17:53:16 +00:00
Oliver Eikemeier
0a16eb8341 give out a little more information in case of a missing dependency
PR:		56549
Submitted by:	edwin
Reviewed by:	joerg, ru
Approved by:	joerg
MFC after:	2 weeks
2004-05-28 00:05:28 +00:00
Matthew N. Dodd
966efcc767 Support basename and path based constrained matches.
eg:
	[foo]
	...

	matches any executable 'foo'

	[/usr/bin/foo/]
	...

	matches any executable under the directory /usr/bin/foo/

Exact matches continue to function as before.

PR:		 bin/66769
Submitted-by:	 Dan Nelson
2004-05-24 01:24:13 +00:00
Olivier Houchard
3088daddf3 Work around a problem somewhere with binutils (?) on arm, hopefully without
breaking any other arch this time.
2004-05-15 00:13:14 +00:00
Stefan Eßer
55a4ccf3e8 Fix breakage caused by alphabetically sorting SRCS: rtld_start.S must come first!
The previous version made all shared binaries dump core.
2004-05-14 21:01:52 +00:00
Olivier Houchard
e659267f1e Import arm bits for rtld-elf.
Obtained from:	NetBSD
2004-05-14 12:15:51 +00:00
Doug Rabson
f88e6caca2 If we change obj_rtld.path after initialising __progname, make sure we
change __progname to point at the new storage otherwise it ends up
pointing at freed memory which leads to confusing garbled error messages.
2004-03-29 18:37:37 +00:00
Peter Wemm
c707fea10b More stack alignment fixes. Arrange so we call _rtld() in ld-elf.so.1
with the correct alignment.  This is important because this calls to
library static constructors are made from here.  The bug in the old crt*.s
files hid this because in this case, two wrongs do indeed make a right.
Also, call _rtld_bind() with the correct alignment, because it calls back
into the pthread library locking functions.  If things happen just
the wrong way, we get a SIG10 due to the broken stack alignment.
2004-03-21 01:43:39 +00:00
Peter Wemm
c905e45dc0 Add initial support for compiling a special 32 bit version of
ld-elf.so.1 on 64 bit systems.  Most of this involves using alternate
paths, environment variables and diagnostic messages.

The build glue is seperate.
2004-03-21 01:21:26 +00:00
Mark Murray
16fc3635f7 Make NULL a (void*)0 whereever possible, and fix the warnings(-Werror)
that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).

There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.

Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".

Tested on: i386 sparc64
2004-03-05 08:10:19 +00:00
Alexander Kabaev
2627f3570d Do not depend on existence of _end symbol in obj_from_addr, use
obj->mapbase and obj->mapsize instead.

Prompted by: 	OpenOffice debugging session at last BSDCon.
2004-02-25 17:06:16 +00:00
Max Khon
6e918a4d5e Fix "warning: value computed is not used".
Found by:	gcc 2.95.4 [FreeBSD]
2004-02-03 18:53:40 +00:00
Doug Rabson
ae59481b1a Initialise some uninitialised variables.
Thanks to: valgrind
2003-12-31 15:10:41 +00:00
Peter Wemm
6143d8ba5f Fix dynamic linking a bit more.. enough that mozilla-firebird works if you
dig up the patches for amd64 support for it.

Note to self: do not put a 64 bit value in a 32 bit space.
2003-12-12 01:12:41 +00:00
Peter Wemm
080f5381b7 Revert last change. ../rtld.c uses CACHE_LINE_SIZE too.
Change it to 64 while here.

Reported by:  ps
2003-12-11 18:42:51 +00:00
Peter Wemm
165d50f626 Only define CACHE_LINE_SIZE in one place.. 2003-12-11 04:49:37 +00:00
Peter Wemm
40a7c81112 CACHE_LINE_SIZE is 64 on athlon and amd64 chips, not 32. This should
probably be 128 since that is what the hardware prefetch fill size is
on both the p3, p4 and athlon* cpus.
2003-12-11 04:47:53 +00:00
Anton Berezin
4893027ac4 Sync comment with code's reality.
MFC after:	1 week
2003-11-14 12:56:56 +00:00
Matthew N. Dodd
5515f48ce3 Retire the WITH_LIBMAP compile knob; libmap is now a standard feature. 2003-09-13 21:50:36 +00:00
Matthew N. Dodd
4402996dea Change libmap.c:lm_init() to return a status value; 0 for success
(libmap available) and 1 for failure.  Assign this return to the
global 'libmap_disable' variable in rtld.c.

This totally prevents any libmap functions from being called after
lm_init() if no config file is present.
2003-09-13 21:43:08 +00:00
Warner Losh
566ef09073 Very minor style nit: sort include files alphabetically. 2003-08-22 02:22:59 +00:00
Gordon Tetlow
df7bdd0ae9 Forgot one instance of ld-elf.so.1. Convert to ${PROG}
Pointed out by:	obrien
2003-08-17 22:12:26 +00:00
Gordon Tetlow
dbbcd515ff Don't forget to honor DESTDIR. Also switch over to using PROG instead of
the binary name directly.
2003-08-17 18:59:30 +00:00
Gordon Tetlow
a857d9305c Don't forget to chflags noschg the existing binary so we can symlink
over it safely.

Pointed out by:	yosimoto@waishi.jp
2003-08-17 18:50:56 +00:00
Gordon Tetlow
df7c0368c1 As long threatened, stage 2 of making a dynamically-linked root a reality.
Install rtld into /libexec.
2003-08-17 08:06:00 +00:00
Gordon Tetlow
7b73593acd Prepend /lib to the builtin library search path in rtld. 2003-08-17 07:55:17 +00:00
Jake Burkholder
d037213487 Avoid using the global offset table to get the address of _DYNAMIC in
rtld.  When _DYNAMIC is referenced normally from C the global offset
table is used implicitly, but newer versions of binutils don't initialize
it statically in the binary, so this doesn't work until rtld is relocated,
which _DYNAMIC is needed for...  So, as on other systems with the same
problem, we disassemble a call instruction to _DYNAMIC in order to get
its address.
2003-07-04 00:05:15 +00:00
Matthew N. Dodd
e2a474429e Fix warnings on 64 bit platforms.
Noticed by:	 jake
2003-06-19 16:09:18 +00:00
Matthew N. Dodd
5407dd5b82 Add function prototypes. 2003-06-19 05:28:26 +00:00
Matthew N. Dodd
ded0e52363 LD_DUMP_REL_PRE and LD_DUMP_REL_POST don't output to stderr; don't
claim that they do.
2003-06-19 04:34:09 +00:00
Matthew N. Dodd
c5d061c17a Provide a mechanism for dumping relocation information.
Setting the LD_DUMP_REL_PRE or LD_DUMP_REL_POST environment variables
cause rtld-elf to output a table of all relocations.

This is useful for debugging.
2003-06-19 03:55:38 +00:00