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48 Commits

Author SHA1 Message Date
thorpej 67b1884571 Add support for dynamic linking on the SuperH. From Marcus Comstedt, 
with some bug fixes (namely, don't forget to consider the addend when
processing relocations) from me.
 2002-02-03 23:34:42 +00:00
thorpej 6d9f5579ab Garbage-collect the OLD_GOT stuff. 2001-12-14 21:25:22 +00:00
thorpej c7e9af3ef0 binutils-current ld emits DT_TEXTREL into _DYNAMIC on arm-elf. Handle 
this.
 2001-12-14 21:21:27 +00:00
christos f8ad0818e5 Unloading objects, can cause other objects whose reference count becomes 
0 to be unloaded. Make sure that when we unload those objects we remove
any references to them from the globals list... This fixes SIGSEGV with
apache+mod_php+mysql.

XXX: This fix should be pulled up.

christos
 2001-05-10 20:19:25 +00:00
pk 38fd9b8f99 Avoid the use of a `switch(){}' statement before _rtld_init() is called. 
`switch()' code may be translated using a jump table approach which causes
it to reference the equivalent of a global variable, something that must
be avoided before _rtld_init() has run.
 2001-02-03 13:25:00 +00:00
mycroft 0581ae5bad Make ldd(1) build again. 2000-11-10 23:53:04 +00:00
mycroft 2d376bed2b When dlopen()ing with RTLD_GLOBAL, also make dependent libraries RTLD_GLOBAL. 2000-11-10 21:31:30 +00:00
scottb b5de616825 copy the real object filename to the rtld object path so that the 
Dl_info structure can be properly filled by dladdr().
 2000-08-28 04:15:54 +00:00
mycroft 94581370f5 The ELF ABI declares that argc must fill an `argument slot'. Make it so. 
For __sparc_v9__ only, do a hack to make executables work temporarily before
and after the kernel is switched.
 2000-07-26 15:40:07 +00:00
mycroft 43cfeb27a9 Catch up with type changes. Also: 
* Apply DT_PLTRELSZ to (one of) pltrel or pltrela *after* we've finished
  parsing the headers, so we know which one.
* Fix sparc64 bogons.  (It works now!)
 2000-07-26 02:07:34 +00:00
thorpej a8248dcc27 Make it build on non-VARPSZ again. 2000-07-19 15:01:16 +00:00
eeh 55c1b7fb0d Fix some issues with SPARC V9 ELF binaries. 2000-07-18 22:33:55 +00:00
matt 824a084272 More VAX ELF changes. 2000-07-17 02:55:52 +00:00
matt cc5d6b2a4d Initialize ld.elf_so's textsize. 2000-07-14 21:59:58 +00:00
christos baeb94e0b1 Also set __mainprog_obj so .ini sections can call dlopen() 2000-06-16 19:51:05 +00:00
jdolecek 06d16ede1e slighly move the assert() added in last commit, so that it's 
actually useful
 2000-06-03 06:51:57 +00:00
jdolecek 2a05365bbb _rtld_unref_dag(): needed->obj might be null if the unreffed object has 
some unsatisfied references (most often when compiled without necessary
	-Wl,-R), so check for that instead of causing null-dereference;
	this way the code has a chance to cleanup after itself and report
	the error to caller

Thanks to Jason Thorpe for helping fix this!
 2000-06-02 22:52:28 +00:00
erh a497b0d8ab Cause ld.elf_so to find the symbols for __progname and environ and set them. If we wait until crt0 gets around to doing it it's too late for any library init functions. 2000-04-15 05:41:46 +00:00
christos 46d52e1ec5 re-indent sanely _rtld_dlsym() [no functional change] 2000-04-15 05:27:49 +00:00
kleink 65b8f3b2eb Change _rtld_dlclose() to unload the object via _rtld_unload_object() rather 
than by itself.  Besides being duplicated code the open-coded version
also did not take care of cleaning up after the object's DAG(!).
Fixes PR bin/8905.
 2000-02-07 19:02:49 +00:00
christos ea816c78b2 Enable parsing and mapping of hardware dependent libraries in ld.so.conf 
To be documented in the man page.
 1999-12-13 09:09:34 +00:00
thorpej 3bf43967ff Name consistencty nit: curmark -> _rtld_curmark 1999-11-10 18:48:19 +00:00
thorpej 70e2953dac Some slight cosmetic cleanup. 1999-11-10 18:34:49 +00:00
mycroft 305c949781 Changes from msaitoh to fix local/global symbol confusion, and to fix weak 
symbol support -- updated by me for elf.h changes.
 1999-11-07 00:21:12 +00:00
kleink 522cbf0248 Update to match new SVR4-style definition names in <sys/exec_elf.h>. 1999-10-25 13:55:06 +00:00
christos fb292d7f02 enable /etc/ld.so.conf processing 
[reviewed by thorpej]
 1999-08-19 23:42:15 +00:00
kleink 1cc052ce00 Rearrange the shared library search path precedences to LD_LIBRARY_PATH > 
runpath > built-in default; this is the behaviour of the SVR4 shared loader,
and gives users the opportunity to override the runpath.  (Addresses a report
on current-users by John Kohl.)
 1999-08-01 19:47:07 +00:00
thorpej 4d256c199f When dlopen()'ing a shared object without an absolute pathname, search 
for it in the rpath of the main program as well as the path specified
in LD_LIBRARY_PATH.
 1999-07-22 00:18:19 +00:00
kleink 571aef82d9 Don't include the ident .note assembly when linting. 1999-06-15 15:54:28 +00:00
kleink 8b74e6d78e Implement LD_PRELOAD support. 1999-05-31 14:48:16 +00:00
ws bf9c27b80b Add code to use the kernel provided page size. 
Enable this on the powerpc only for now.
 1999-04-18 19:40:06 +00:00
kleink 3b03384405 Update an i386-ismed comment. 1999-03-08 10:44:25 +00:00
christos ec2edc19fd Make this compile without -DRTLD_LOADER and fix printf format problems on 
the alpha.
 1999-03-03 21:18:00 +00:00
christos 26475619ed KNF 1999-03-01 16:40:07 +00:00
pk a32bf0c1c2 Just initialize the stack-based temporary `rtld self' object. 1999-02-27 10:35:16 +00:00
christos 84cb65780e Cleanup global variable access so rtld can be self relocating. Also KNF 
reloc.c and move md sparc parts to arch/sparc/mdreloc.c
Now we don't need to load at address 0 on the i386 and the mips should be
trivial to fix.
 1999-02-24 18:31:00 +00:00
christos d72f81978d Add i386 bits 1999-01-10 18:18:56 +00:00
castor dc6b4c42a3 Restore missing variable declaration with -DRTLD_DEBUG 1999-01-09 18:10:19 +00:00
ross b899771419 Rewrite AuxInfo handling to track AuxID changes in sys/exec_elf.h. 1998-10-07 02:53:27 +00:00
tv 3ecc6b044e Some local changes accidentally made it into the last commit; back that 
part out (noticed by mycroft; thanks!)
 1998-07-15 11:26:28 +00:00
tv 77a275d732 Change ld.so default behavior to RTLD_LOCAL, and make RTLD_LOCAL into a 
new flag bit.  Keep RTLD_GLOBAL as an actual flag bit so it won't be
re-used, or may be used for something later.  Mask the dlopen() mode bits
in ld.elf_so so a comparison against RTLD_NOW works.  (RTLD_{LOCAL,GLOBAL}
needs to be implemented for ld.elf_so.)
 1998-07-14 22:18:36 +00:00
mhitch c01fadd882 Don't forget to update _rtld_objtail when _rtld_dlclose() removes the 
current tail entry.
 1998-06-16 03:24:13 +00:00
mhitch 082edecc20 Add support for mips. 1998-03-25 04:12:32 +00:00
mrg 896c1cce87 WARNS?=1 1997-10-08 08:55:35 +00:00
cgd 7631ac43fd make sure that ld.elf_so's path is in the data segment 1997-04-15 07:15:46 +00:00
cgd fbf6ff628e put in two identifying notes, which new binutils snapshots will turn 
into PT_NOTE sections so they can be examined by execve() to figure
out whether this is a native binary, what emulation it's to be run under,
etc.
 1997-03-21 05:39:42 +00:00
cgd 0b2b5475a4 nclude dlfcn.h, and pull RLTD_LAZY in from there. Assume that RTLD_NOW is 
RLTD_LAZY + 1 (for now), if it's not defined.  RTLD_NOW should be defined
in dlfcn.h, since some code (e.g. X11) wants it and assumes that it has
the value currently used by our RTLD_LAZY.
 1996-12-18 22:27:29 +00:00
cgd 41fe218b25 First cut at an ELF shared loader. Originally from John Polstra's FreeBSD elf 
kit, then hacked on by Matt Thomas <matt@3am-software.com>, then by me (to
make it work with new versions of the toolchain, etc.).  This runs, but it's
in serious need of cleaning and/or a fair bit of reworking.  See the README
file for more information, and a list of things to do.
 1996-12-16 20:37:55 +00:00