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875 Commits

Author SHA1 Message Date
skrll
fa7832d0b1 Fixup comment. 2010-01-10 06:37:32 +00:00
skrll
09298c1411 Small tidyup. 2010-01-09 15:36:43 +00:00
mrg
249d1f1111 use COPTS for -G0. 
replace ${CPUFLAGS:M-mabi=64:M-mabi=o64} with two constructs.
the former doesn't seem to work anymore.
 2009-12-18 17:10:07 +00:00
matt
d8d1440d5c Merge from matt-nb5-mips64: 
Add N32/N64 support for mips dynamic loader.
 2009-12-14 00:41:18 +00:00
mrg
750ad3d59d simplify the logic for compat ld.elf_so and move it here. we now can 
find the libc objdir for multiple compat ld.elf_so's, too.
 2009-12-13 09:31:47 +00:00
mrg
6af15ae20b if BSD_MK_COMPAT_FILE is defined, .include it. 2009-12-13 09:01:45 +00:00
mrg
f7f0bc40ae rename LD32DIR to MLIBDIR. 2009-12-13 08:25:20 +00:00
christos
1dc0b61eca If the environment is corrupt, die. From FreeBSD. 2009-12-02 15:50:13 +00:00
skrll
77fd7698f3 Make _rtld_pagesz of type size_t. 
Fixes round_down for alpha which made ldd(1) break.
 2009-11-17 18:44:33 +00:00
skrll
b9fe4e7d17 Add RCSID 2009-11-11 14:15:41 +00:00
skrll
ef99e95537 Fix start symbols for new binutils. 2009-11-04 17:02:43 +00:00
skrll
d43e9fc212 Fix start symbol for newer binutils. 2009-10-22 21:56:13 +00:00
skrll
15653ebb45 ld.elf_so grew more PLABELS with dlinfo so bump HPPA_PLABEL_PRE. 2009-09-25 17:49:56 +00:00
pooka
4c1e54d82b Add Solarisa-like dlinfo() interface to the ELF dynamic linker. 
Implement RTLD_DI_LINKMAP which returns a pointer to the linkmap
chain at the given object.  Other Solaris queries are currently
unimplemented.
 2009-09-24 21:21:33 +00:00
skrll
ffb28af545 Fix start symbol. I have no idea how this worked before. 2009-09-19 14:54:17 +00:00
skrll
4b849729b2 Fix the start symbol. 2009-09-12 07:22:16 +00:00
jmmv
2cb749c2fd Remove trailing \n in calls to _rtld_error: a newline is automatically 
added by a call to the function.
 2009-08-29 13:46:54 +00:00
he
45932f91e5 Apply fix borrowed from i386: Fix const issue (cast const pointers 
to "const uint8_t *" instead of "caddr_t").
 2009-05-24 20:35:41 +00:00
he
237687b934 Copy build fix from i386: Fix const issues (cast const pointers 
to "const uint8_t *" instead of "caddr_t").
 2009-05-24 18:29:03 +00:00
mjf
27cb8d0e73 After a recent WARNS= bump on ld.elf_so it fails to build on hppa, 
complaining that we're "discarding qualifier from pointer target
type".

Use const char * instead of caddr_t to avoid the warning and get
distribution building on hppa again.
 2009-05-23 17:50:34 +00:00
martin
c131490c29 Use the new Elf_SOff (signed offset) type to fix a few signed/unsigned 
problems.
 2009-05-22 21:47:46 +00:00
christos
b19e027aab fix signed/unsigned comparisons and const cast away (untested) 2009-05-20 22:31:46 +00:00
ad
51a76d6f11 Add a reminder about ldd depending on ld.so. 2009-05-20 19:38:38 +00:00
christos
fa64a5bf9b warns=4 2009-05-19 20:44:52 +00:00
lukem
e91bd42f43 Fix const issues (cast const pointers to "const uint8_t *" instead of "caddr_t") 2009-04-12 13:29:29 +00:00
lukem
b4fba76b41 Fix const issues (cast const pointers to "const uint8_t *" instead of "caddr_t") 
NOTE: change based on ../i386/mdreloc.c 1.27
XXX: not compile tested
 2009-03-16 02:46:47 +00:00
lukem
337930db10 Fix const issues (cast const pointers to "const uint8_t *" instead of "caddr_t") 2009-03-16 02:44:47 +00:00
lukem
500db00274 Default to WARNS=4 
Exceptions that need a lower level are:
	getty ld.elf_so lfs_cleanerd makewhatis telnetd tftpd
	hpropd ipropd-master ipropd-slave kadmind kpasswdd
 2009-03-16 02:24:55 +00:00
lukem
b8276deac1 rename a variable to avoid a compiler warning 2009-03-15 23:53:03 +00:00
mrg
fb3cc85fef add some (uintptr_t) to some casts, so these compile with ELFSIZE=32 
*and _LP64.  necessary for 32/64 bit combo ldd support.
 2009-01-06 04:01:46 +00:00
mrg
9108f12f6b move the defines for RTLD_ARCH_SUBDIR into a sub-sub-makefile so we can 
grab these values via reach-over more easily.
 2009-01-06 02:15:06 +00:00
mrg
8679e33545 if LD32DIR is defined: 
- look in src/compat/lib/libc for libc_pic.
- define RTLD_ARCH_SUBDIR to "i386" or "sparc" for amd64 and sparc64
  builds, respectively
if RTLD_ARCH_SUBDIR is defined, add this path before
RTLD_DEFAULT_LIBRARY_PATH in the default search path.
 2008-10-26 07:11:54 +00:00
christos
3b55965a05 Never build this with PIE. 2008-10-16 14:36:20 +00:00
skrll
8c9056ada8 lib/39649: dlsym(3) does not follow dependencies 
Pull across code from FreeBSD to do a search of the passed object and it's
NEEDED objects (dependencies).

Reviewed by gimpy.
 2008-10-04 09:37:12 +00:00
macallan
982ae38f15 avoid usind __builtin_return_address(0) on PowerPC because it fails in 
Xorg's module loader.
Should fix PR37812
 2008-09-27 03:52:05 +00:00
matt
86d6d815ae Make sure to call dlerror() to clear any error messages after the relocations 
are done and there are no errors.  This will prevent spurious undefined weak
symbol errors being returned by dlerror().

Fixes PR bin/39240.
 2008-07-29 16:27:01 +00:00
skrll
dccd9ddf7f RCSID police 2008-07-24 06:51:58 +00:00
matt
38bdc8954f Refactor common code to _rtld_relocate_plt_object to i386 and arm so they 
act like the other versions.
In _rtld_bind, if the result is 0, call _rtld_die.
Initialize _rtld_sym_zero.st_value to -_rtld_objself.maprelocbase.  Now when
the symbol is resolved, st_value + maprelocbase will equal 0 and the above
check in _rtld_bind will fire and a call to NULL will be avoided.
 2008-07-24 04:39:25 +00:00
christos
d3b459e727 abort() if we are trying to use an undefined weak symbol from the plt. Remove 
check from relocate_plt_object() since we cannot return _rtld_sym_zero anymore.
Code from gimpy.
 2008-07-23 18:16:42 +00:00
christos
0d33a45b97 handle sym_zero like x86_64; other ports might need this too. 2008-07-22 22:27:07 +00:00
christos
56e895e29f deal specially with sym_zero, returned by a weak symbol that was not found, 
by retrieving it's name instead of printing random garbage.
 2008-07-21 20:19:28 +00:00
ad
156176be13 Fix error in previous. From nakayama@. 2008-06-05 00:03:20 +00:00
ad
53c5ea5da9 Don't bother unmapping the ELF header unless it overlaps the first load 
section.
 2008-06-03 19:32:32 +00:00
ad
9795e155ec __progname isn't const. 2008-06-03 19:22:07 +00:00
ad
36b49f84f3 Try read() on ld.so.conf. If the file is small, it avoids stat+mmap+munmap. 2008-06-03 18:36:59 +00:00
wiz
488200e6ea Remove trailing whitespace and superfluous .Pp. 2008-05-25 19:48:35 +00:00
martin
11a6dbe728 Convert TNF licenses to new 2 clause variant 2008-04-30 13:10:46 +00:00
martin
ce099b4099 Remove clause 3 and 4 from TNF licenses 2008-04-28 20:22:51 +00:00
yamt
8c93baa802 constify 2008-01-14 08:53:42 +00:00
yamt
8a58f724e1 tabify 2008-01-14 08:52:16 +00:00
christos
8fb14189dc make this compile again. 2007-12-29 01:44:03 +00:00
christos
716fde8fa0 simplify; mapbase == vaddrbase from the PaX author. 2007-12-28 19:36:21 +00:00
christos
8636ab52f6 Deal with ASLR PIE executables, by recognizing that phdr != phdr->v_addr 
for PT_PHDR headers when the program has been loader to a vaddr other than
then one specified (a randomized one), and modifying the relocation base
address appropriately (idea from elad)
 2007-12-26 21:14:41 +00:00
christos
8b0637156f No need for stack_protector.o if USE_FORT is no. 
XXX: compiling a binary with -Wl,--dynamic-linker,${NETBSDSRCDIR}/libexec/...
results in stack overflow. Investigate!
 2007-12-26 21:11:52 +00:00
christos
5ad1b72097 print the symbol we are seaching for [when debugging] 2007-12-26 21:10:03 +00:00
ad
558a5ffd0f rtld changes for PR bin/37347: 
- Apply patch from J.T. Conklin to execute .init/.fini functions in order.
- Support DF_1_INITFIRST and mark libc with DF_1_INITFIRST. Shared libs
  should be recording a dependency on libc, but it's too late to do that.

Ok christos@.
 2007-12-07 20:34:04 +00:00
christos
496f9be3e8 support %z 2007-11-24 18:32:26 +00:00
ad
71ac015ebf stack_protector.c has moved. 2007-11-13 15:34:51 +00:00
skrll
29353f93e2 Build a local copy of exit that doesn't call __cxa_finalize. It's not 
needed and drags in a lot of libc via free.
 2007-10-30 17:19:59 +00:00
christos
ed1a8fea8d build stack protector locally so that we don't call syslog_ss that results 
in 1/2 of libc dragged in.
 2007-10-29 20:36:31 +00:00
ad
bf4b000d16 - Don't use the names malloc/free/etc, since we can end up pulling in libc's 
malloc which is not what we want.
- Remove ancient memory compaction hack. Realloc on free memory is now an
  error again (from joerg@).

Ok christos@.
 2007-10-05 22:21:07 +00:00
christos
596c6ec5db provide xrealloc, and don't cast and use malloc and realloc directly. 2007-09-27 17:52:16 +00:00
christos
2cce1500a2 If we are using SSP, compile in a separate copy of the stack protector 
functions so that we don't end up calling syslog_ss() which drags in
a large portion of libc. Found by skrll...
 2007-09-27 17:51:40 +00:00
christos
6f875d32e2 Don't trust AT_SUN_EXECNAME, if we are set{u,g}id. 2007-09-21 13:57:09 +00:00
christos
6eac115581 delete debug printf 
make regress compile again.
 2007-09-20 19:42:53 +00:00
christos
40cfdb5e3a Use AT_SUN_EXECPATH instead of argv[0] for the executable name. This needs 
kernel support, which is not there yet, thus $ORIGIN is broken at this time.
This is ok, nothing uses it yet.
 2007-09-20 14:14:25 +00:00
cube
f7779133cd Don't remove the last component of filename before calling 
_rtld_digest_dynamic:  it is done in expand(), and doing it twice is once
too much.  This fixes $ORIGIN expansion for dependencies.
 2007-09-20 07:50:32 +00:00
tnn
ea0fc2f827 5 is not a valid version for .Nx, so change it to 5.0. 2007-09-13 21:32:14 +00:00
joerg
ad61ac15d2 Don't define bool, false and true. Use stdbool.h. 2007-09-02 09:57:16 +00:00
christos
2ffe4b875f Use an elf note to handle pax arguments. This is a temporary solution to 
avoid wasting OS flag bits. In the future we'll probably use fileassoc to
achieve this (once there is a way to make fileassoc persistent) or in the
shorter term libelf, so that we can add and remove the note on demand instead
of burning bits on each binary. Of course since this is a tool, this means
that we'll need to think about how to handle libelf...
 2007-06-24 20:35:36 +00:00
christos
3b320420fe fix a comment. 2007-05-18 21:46:39 +00:00
christos
04ee85ad50 Support Solaris-like $ORIGIN etc. expansions in paths. 2007-05-18 21:44:08 +00:00
scw
596a371d09 Remove a test for defined(__SH5__). 2007-04-08 10:02:35 +00:00
scw
5764a76889 Remove support for NetBSD/{,evb}sh5. 2007-04-08 09:35:21 +00:00
matt
549524f84f Deal with MKPICLIB != no. 2007-03-15 17:27:15 +00:00
matt
ee98d74a6b Remove MD COMBRELOC support since it's now MI. 
Enable COMBRELOC for all arches
 2007-02-23 01:17:11 +00:00
matt
364993dede Don't use cached results for plt lookups (nor save them). 2007-02-23 01:16:32 +00:00
matt
4d10e5e667 Make the COMBRELOC support generic. 2007-02-22 18:57:48 +00:00
martin
3cc1de3d7b Add COMBRELOC support 2007-02-15 19:42:13 +00:00
skrll
1fddd99f52 Provide COMBRELOC support for amd64 in answer to PR/35589. 
Some statistics:

base + COMBRELOC
$ time (for i in `seq 100`;do noatun --help>/dev/null;done)
(; for i in `seq 100`; do; noatun --help > /dev/null; done; )  148.64s
user 4.82s system 99% cpu 2:33.93 total

base + DF caching:
$ time (for i in `seq 100`;do noatun --help>/dev/null;done)
(; for i in `seq 100`; do; noatun --help > /dev/null; done; )  151.15s
user 5.53s system 99% cpu 2:37.23 total

base:
$ time (for i in `seq 100`;do noatun --help>/dev/null;done)
(; for i in `seq 100`; do; noatun --help > /dev/null; done; )  492.36s user
5.34s system 99% cpu 8:19.17 total
 2007-02-15 15:44:28 +00:00
wiz
09cb1d6f1c s/existance/existence/, from Zafer. 2006-11-24 22:52:16 +00:00
christos
aac134252a From defend dot the dot world at gmail dot com: Sanitize environment variables 
for set{u,g}id binaries, so that in case they are playing with set{u,g}id
and exec'ing other binaries they don't get affected by the
LD_{PRELOAD,DEBUG,LIBRARY_PATH} environment setup. We leave LD_BIND_NOW alone.
There are no binaries affected in the base system.
 2006-11-22 21:46:36 +00:00
skrll
6f388cd224 Create _rtld_relocate_plt_object and use it in _rtld_bind and 
_rtld_relocate_plt_objects.

No functional change.
 2006-10-17 08:33:36 +00:00
skrll
152e43d87a Support unaligned DIR32 relocs. 
Closes PR 18293
 2006-10-17 08:28:06 +00:00
skrll
edf13fb5fb Reformat a comment. 2006-10-16 13:53:09 +00:00
skrll
78b8583054 Correct the frame size for a couple of ENTRYs 2006-10-16 13:52:47 +00:00
simonb
676a630d08 Simplify multiple MACHINE_ARCH endian checks with single MACHINE_CPU 
checks.
 2006-08-27 07:22:02 +00:00
skrll
a238470b22 Add (back) -Wl,-static to the link. 2006-06-29 19:30:59 +00:00
simonb
428d37fad6 Fix unaligned loads and stores generated by gcc4. Problem described in 
http://mail-index.NetBSD.org/tech-toolchain/2006/06/27/0001.html.
This cleaner version of the patch from Christos - thanks!
 2006-06-28 16:48:38 +00:00
simonb
7d5684f475 Use .previous at the end of the NetBSD ident note so that we switch 
back to the previous section.  Fixes build problems on MIPS with gcc4
and -g.
 2006-06-13 13:55:58 +00:00
mrg
0f0f2b4e93 in _rtld_bind() initialise new_value for GCC4. 2006-05-23 16:27:41 +00:00
drochner
eb92277cd7 sprinkle some __noreturn__ attributes, saves gcc4 warnings elsewhere 2006-05-22 19:49:09 +00:00
mrg
d677e4a13a avoid more GCC4 uninitialised variable problems. (sh3 known, vax guessed.) 2006-05-21 04:17:35 +00:00
dan
b995f58933 appease gcc4 uninitialiased warning 
ok mrg.
 2006-05-20 23:38:27 +00:00
mrg
82f7733046 in _rtld_bind() initialise result to appease GCC4. 2006-05-20 07:09:44 +00:00
mrg
084c052803 quell GCC 4.1 uninitialised variable warnings. 
XXX: we should audit the tree for which old ones are no longer needed
after getting the older compilers out of the tree..
 2006-05-10 21:53:14 +00:00
skrll
c965f60a50 Remove empty lines. 2006-04-03 13:23:15 +00:00
christos
0339fe6614 Coverity CID 2749: Fix another double free. Instead of removing that last 
free() call, change the allocation policy to leave the responsibility for
allocation/freeing the pathname to _rtld_map_object(), instead of having
the caller allocate it and _rtld_map_object() free it. This simplifies the
code a lot and it is more efficient.
 2006-03-21 17:48:10 +00:00
christos
458b13dee7 Coverity CID 923: Avoid NULL deref. 2006-03-18 23:09:34 +00:00
matt
ba8a81077b Fix some double frees / missing frees / use after freed all 
relating to _rtld_load_object.  Fix Coverity CID 2601, 2600.
 2006-03-18 02:34:30 +00:00
skrll
9f6658b9ff Remove the LD_BIND_NOW item 2006-03-04 09:00:22 +00:00
skrll
125d6a43ac Add LD_BIND_NOW support for mips. 
This is the last arch to be done so remove the large ugly #if defined()
stuff in reloc.c.
 2006-03-04 08:58:46 +00:00
rpaulo
94ef983148 Remove -Wl,-non_shared (same meaing as -static). 2006-02-03 02:01:19 +00:00
skrll
39aae79d93 Bring across a change from FreeBSD from back in 1998: 
"Fix a bug that showed up when debugging dynamically linked programs.
References from GDB to "printf" and various other functions would
find the versions in the dynamic linker itself, rather than the
versions in the program's libc.  This fix moves the GDB link map
entry for the dynamic linker to the end of the search list, where
its symbols will be found only if they are not found anywhere else."

"printf" isn't true for us, but various libc symbols are, e.g. "malloc".

Fixes PR 32074 as noted by uwe@

OK'd by christos@
 2006-01-12 22:40:17 +00:00
uwe
a35d2a5b09 Add some comments. 2006-01-11 22:24:34 +00:00
uwe
e7102691a2 Kill trailing whitespace. 
Indent delay slots.
 2006-01-11 22:05:27 +00:00
uwe
b98cf46363 _GLOBAL_OFFSET_TABLE_ is only used if RTLD_DEBUG, so wrap its 
declaration too.

32-bit SuperH can not pretend that _GLOBAL_OFFSET_TABLE_ is a normal
variable, because of the way PIC variable references is generated, but
as compiler arranges for _GLOBAL_OFFSET_TABLE_ address to be in r12
anyway, just use that value by declaring it as a global register
variable.  Makes sh3 compile with RTLD_DEBUG.
 2006-01-11 21:40:12 +00:00
perry
ae6ae2c362 Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete. 2005-12-24 20:56:41 +00:00
skrll
bd7cbb198e Correct the lookup order of _rtld_symlook_default and make 
_rtld_find_symdef use _rtld_symlook_default.

This reduces the code size and means that dlsym(RTLD_DEFAULT,...) has the
correct lookup order.

Reviewed by kleink. Thanks.
 2005-10-13 11:14:09 +00:00
chs
0c6e4dbbc4 ok, the change from rev 1.33 was unnecessary after all, 
only the second part of the previous revision was needed.
put the logic for the initial icache invalidation of the PLT
back the way it was, but in a way that makes clearer what's going on,
and add some comments explaining it.
 2005-09-27 07:20:32 +00:00
chs
96fb424f44 fix two problems with icache invalidation of the PLT: 
- restore revision 1.33, it was correct.
 - fix pointer arithmetic in other calls to __syncicache().
 2005-09-26 05:45:13 +00:00
skrll
680596d08e Add __RCSID. 2005-08-20 19:01:16 +00:00
skrll
9f486044a0 KNF 2005-08-15 10:52:42 +00:00
skrll
5f0dd3a852 Add support for immediate PLT binding on SH5. Compile tested only as 
shared libs don't actually work on SH5 (yet).

OK'd by Steve Woodford.
 2005-07-28 12:35:21 +00:00
skrll
57e00bf69e Support immediate PLT binding on powerpc. Thanks to Simon Burge for 
testing.

I can see the finish line...
 2005-07-28 10:54:30 +00:00
skrll
56d4febf60 Support immediate PLT binding on m68k. Tested on NetBSD/sun3 using the new 
version of tme.

Not far now...
 2005-07-26 15:43:34 +00:00
skrll
51c5e03c82 Support immediate PLT binding on vax. Tested on simh. 
Nearly there...
 2005-07-24 08:02:23 +00:00
skrll
16044f3d38 Support immediate binding on x86_64. 
Closes PR 30570. Thanks to TAMURA Kent for testing.
 2005-07-17 05:57:21 +00:00
fair
af23ff4dbb appease gcc -Wuninitialized 2005-06-08 00:19:18 +00:00
he
7ed57630be Initialize a bunch of local variables in _rtld_relocate_nonplt_self(). 
Found by -Wuninitialized while compiling for newsmips.

Reviewed by lukem.
 2005-06-07 09:20:19 +00:00
chs
7bbdd188e1 appease gcc -Wuninitialized on hp700. 2005-06-05 19:08:28 +00:00
lukem
3ed9ffcae1 Explicitly prefix ld(1) options in LDFLAGS with "-Wl," rather than 
using the ${LDFLAGS:@F@-Wl,$F@} make substitution because that breaks
if LDFLAGS is already set.
 2005-06-04 16:17:17 +00:00
lukem
a50c8ab399 Add some sanity checking inspired by gcc -Wuninitialized. 2005-06-01 14:57:22 +00:00
lukem
a12d17494d appease gcc -Wuninitialized 2005-06-01 14:14:55 +00:00
skrll
9c5ec319c5 Support LD_BIND_NOW on sh3.. 2005-05-31 19:30:38 +00:00
skrll
13901ecdef Support LD_BIND_NOW for alpha. 2005-05-25 13:39:46 +00:00
skrll
504512d318 Copyright maintenance. 2005-05-21 06:43:39 +00:00
chs
14480c4191 in _rtld_is_exported(), use a function pointer type instead of Elf_Addr 
so that hppa knows to do the plabel thang.
 2005-05-10 13:15:56 +00:00
christos
01592c7cfe not supporting %c is confusing and it only uses up a few bytes. 2005-04-24 21:11:58 +00:00
skrll
f5ee31d050 Update and be more descriptive about one of the machine specific #ifdefs 2005-02-26 22:26:18 +00:00
martin
d7931a6191 Quote symbol names in a debug message (to make it easier to spot an empty 
symbol name, a common failure mode)
 2005-01-11 21:58:27 +00:00
martin
d977618dcf Backout -DDEBUG that I accidently commited with the last change 2005-01-11 07:47:37 +00:00
martin
0a1196da3e Add LD_BIND_NOW support for sparc and remove some relocation types that 
are not supposed to happen in 32bit code.
From Nick Hudson.
 2005-01-09 14:58:15 +00:00
simonb
c364c98f98 Don't process DT_DEBUG on MIPS as the dynamic section is mapped 
read-only.  DT_MIPS_RLD_MAP is used instead.

Patch from Nick Hudson.
 2005-01-09 12:43:23 +00:00
martin
995d8a8e4b Add support for unaligned relocs on sparc, from PR 26858. 
Should also fix PR 25901 and PR 18296.
 2005-01-05 09:18:53 +00:00
martin
35130888e4 Add LD_BIND_NOW support for sparc64. 2005-01-05 09:16:03 +00:00
mycroft
ac7236712a ELF32_ST_TYPE -> ELF_ST_TYPE 2004-12-17 10:53:27 +00:00
skrll
38fb01be3a Apply fixes from Charles: 
- Fix how _rtld_relocate_nonplt_self deals with REL32 relocations.

- Change the assert so that it is correct for binutils 2.14 and 2.15.

There are still problems with the libraries generated with binutils 2.15,
but at least ld.elf_so doesn't crash.
 2004-12-15 10:26:29 +00:00
skrll
2728318e3c Add __RCSIDs. 
OK'd by mycroft.
 2004-10-22 05:39:56 +00:00
uwe
255de8f40e Preserve r2 in _rtld_bind_start - in r2 functions that return 
aggregate types are passed the address of the memory area to store the
returned result to.

Fixes PR port-sh3/26949.
 2004-09-14 21:34:01 +00:00
rearnsha
3fa803b523 Check the type of symbols; if it's a Thumb function, then set the Thumb 
bit in the relocated value (JUMP_SLOT, ABS32 & GLOB_DAT).
 2004-08-21 11:14:07 +00:00
rearnsha
c3e148044f Use BX if available. 2004-08-21 11:12:03 +00:00
thorpej
2a63e04007 - Change the strong dlfcn names in libc to ___name, and make the __name 
versions used by others in libc weak, so that we have:
	name: weak
	__name: weak
	___name: strong
- Add __name strong aliases of the dlfcn names in ld.elf_so, so that we have:
	name: strong
	__name: strong

This allows ld.elf_so to self-resolve both the name and __name variants
of the dlfcn functions, the former being required for dlfcn support in
applications, the latter being required for dlfcn support in libc.

Fixes the problem described in:

    http://mail-index.netbsd.org/tech-toolchain/2004/07/17/0000.html

Reviewed by Nick.
 2004-07-18 17:26:19 +00:00
petrov
1ee4832b70 Don't print relocated content (in DEBUG mode) as it can cause 
misaligned access. It needs to be done differently if needed at all.
Fix PR port-sparc64/20907.
 2004-07-17 05:03:33 +00:00
cube
d1b3d841ee Make ld.elf_so use the new sysctl API. That allows the user to give any 
sysctl variable name in /etc/ld.so.conf.  It also makes the ld.elf_so
binary slightly smaller (at least on i386), and has no impact on
performance.

Fixes PR 26100.
 2004-07-05 11:50:07 +00:00
skrll
701ae47cdf Fix the dynamic linker for hppa using ELF. 
Lazy binding doesn't work 100% of the time so force immediate binding.
One possible reason is that the PLT stub blows away r20 which the
compiler might not take into account.
 2004-05-17 13:16:02 +00:00
skrll
e88c851d08 Test before commit. 2004-05-17 11:00:01 +00:00
skrll
0556cd7d3c Re-arrange/correct some asserts. 2004-05-17 10:23:58 +00:00
skrll
8431fb3c4c Wrap a couple of lines to <80 columns 2004-05-14 11:59:14 +00:00
skrll
c788a1a535 Whitespace. 2004-05-14 11:11:02 +00:00
skrll
212b905081 Garbage collect the RTLD_RELOCATE_SELF error. 2004-05-12 20:23:29 +00:00
skrll
c0148a0dfe Add a debug message. 2004-05-12 20:12:37 +00:00
mhitch
b6825b1e42 The -symbolic flag in gcc 2.95.3 is not passed to the linker, which is 
required.  Restore the -Bsymbolic option in LDFLAGS on the vax.  Fixes
the problem with ld.elf_so mentioned on port-vax.
 2004-04-28 02:04:56 +00:00
skrll
236df38503 Be more pedantic about where we use -shared, etc. 2004-03-24 08:01:26 +00:00
atatat
1de60baa7c The <sys/sysctl.h> header already provides a perfectly good struct for 
this purpose, so...uh...use it.
 2004-03-16 05:25:12 +00:00
enami
76eaac1d6f Whitespace. 2004-02-26 21:45:59 +00:00
skrll
52581467e2 Whitespace. 2004-02-23 21:27:20 +00:00
skrll
4d30716d36 Remove the millicode hack - its not needed anymore. 
Get the entry point right.
 2004-02-23 21:20:40 +00:00
uwe
8eb5ba6d09 Use CC instead of LD to link the ld.elf_so. This will correctly link 
"millicode" from libgcc_pic.a on platforms that need it.

From Nick Hudson <skrll@netbsd>.
 2004-02-22 01:39:43 +00:00
skrll
b5330c98c7 Add the standard XXX about CPPFLAGS and -fpic here. 2004-02-21 16:02:06 +00:00
skrll
d93f13855a Move common LDFLAGS into Makefile from arch/*/Makefile.inc 2004-02-21 15:56:03 +00:00
skrll
151426159b Whitespace. 2004-02-20 20:58:24 +00:00
enami
074a9e8fee Salvage the instruction to save the pointer to ps_strings for later use 
so that setproctitle() works again.  The problem reported by Naoki Fukaumi
on japanese mailing list.

Approved by: Ross Harvey
 2004-02-18 23:04:49 +00:00
enami
f1740378ad Don't assume past the mmaped region is accessible. 2004-02-15 02:59:04 +00:00
enami
63fcb5a042 Fix warning message: the failed operation is not fstat but mmap. 2004-02-15 02:56:53 +00:00
mrauch
f06ab72b6e Change the symbol lookup order to search RTLD_GLOBAL objects 
before referencing object's DAG. This makes it possible for
C++ exceptions to work across shared libraries.

Patch taken from FreeBSD: src/libexec/rtld-elf/rtld.c: 1.67 -> 1.68,
committed there by kan@FreeBSD.org.
 2003-12-07 09:36:06 +00:00
christos
1a2b5965a9 Don't try to preload an empty string. 2003-11-25 14:36:49 +00:00
simonb
28817edd35 Restore handling of reloc entries that point to unaligned locations 
that seems to have disappeared in rev 1.34.

Thanks to Jason Thorpe for suggesting where to look.
Fixes the simple test case in PR port-mips/23366.
 2003-11-19 19:41:57 +00:00
lukem
130ab7336b Rework how MAKEVERBOSE operates: 
*	Don't bother prefixing commands with a line of  ${_MKCMD}\
	and instead rely upon "make -s".  This is less intrusive on
	all the Makefiles than the former.  Idea from David Laight.

    *	Rename the variables use to print messages.  The scheme now is:
	    _MKMSG_FOO		Run  _MKMSG 'foo'
	    _MKTARGET_FOO	Run  _MKMSG_FOO ${.TARGET}
	From discussion with Alistair Crooks.
 2003-10-21 10:01:19 +00:00
fvdl
d83c6c4294 Don't use NULL for integers. 2003-10-21 01:19:10 +00:00
lukem
ddff99b7f4 rework to use the newer _MKMSGCREATE (et al) macros 2003-10-19 04:45:01 +00:00
lukem
6cf0d872cd support MAKEVERBOSE 2003-10-19 01:19:10 +00:00
matt
fd1caff7c2 Update to new reality. XXX _rtld_bind still needs to be written. 2003-10-06 16:08:35 +00:00
mycroft
65ed3bdcdd Make the effect of the hack clearer. 2003-09-24 10:25:26 +00:00
mycroft
7242c1114c One more tweak... 2003-09-24 10:18:52 +00:00
mycroft
7b234fd232 Make the comment a little more accurate. 2003-09-24 09:59:45 +00:00
mycroft
89ea37c60a Temporary workaround for some binutils/ld lossage. See the comment for more 
information.
 2003-09-24 09:55:35 +00:00
mycroft
5fb0b88880 Some notes... 2003-09-24 06:20:33 +00:00
enami
9c2e06fe24 Space after the keyword `if'. 2003-09-22 14:37:57 +00:00
mycroft
5bd33bcad6 Back out revision 1.100. There is something screwier going on. 2003-09-07 22:17:43 +00:00
mycroft
323a574dc3 dlsym() should not leave an error set. It confuses programs that check 
dlerror() (such as pkgsrc/graphics/transcode).
 2003-08-31 21:52:01 +00:00
skrll
d900731978 Resolve dlsym(3) and friends directly so that dlsym(RTLD_NEXT,...) works. 
Previously dlsym resolved to the version in crt0.o or libc which would
mean that the caller's shared object couldn't be determined correctly
using __builtin_return_address(0).

Mainly from FreeBSD, but adapted by me. Benefits of this solutions are:

	- backward comptibility maintained
	- existing broken binaries are fixed with a new ld.elf_so
	- __mainprog_obj can be removed from crt0.o
	- we do the same thing as FreeBSD

Fixes PR 22067.

OKed by Jason and Christos.
 2003-08-12 09:18:38 +00:00
agc
8e6ab8837d Move UCB-licensed code from 4-clause to 3-clause licence. 
Patches provided by Joel Baker in PR 22284, verified by myself.
 2003-08-07 09:46:37 +00:00
skrll
59b0f10729 KNF 2003-08-05 19:41:53 +00:00
salo
99410184e7 netbsd.org->NetBSD.org 2003-07-26 19:24:24 +00:00
mrg
88bb1d9b3b include <string.h> or <stdlib.h> for all prototypes 2003-07-26 15:04:38 +00:00
skrll
5f573ab68d ANSIfy and de-__P(). 2003-07-24 10:12:25 +00:00
skrll
ddc9322f3b Support immediate binding on arm. 2003-07-21 15:34:35 +00:00
skrll
b2695e5a1f arm and sh5 also have bogus DT_TEXTRELs. sh5 was already covered so just 
update the comment.
 2003-07-21 15:17:55 +00:00
skrll
619dee76f6 Correct the in_plt parameter of a couple of _rtld_find_symdef calls. 
The mips_reloc.c case is a no-op as _rtld_symlook_obj ignores in_plt for
MIPS.

OK'ed by Charles.
 2003-07-17 13:56:32 +00:00
skrll
d4cfd1c666 s/_rltd_obj_rtld/_rtld_objself/ in #ifdef notyet code. 2003-07-15 07:39:55 +00:00
skrll
9192c2eed4 Whitespace 2003-07-15 07:38:29 +00:00
marcus
fae2567c9b Removed unused function. 2003-07-05 20:48:39 +00:00
tsutsui
0e65101f60 Add function prototype declarations. 2003-07-05 18:18:51 +00:00
marcus
a4878b4349 Bugfix: Don't pick addend both from reloc and contents at the same time. 2003-07-02 15:29:34 +00:00
marcus
6aeeb40d4a Updated to work with current rtld code. 2003-06-30 00:50:46 +00:00
marcus
5404577abf SH also has a bogus DT_TEXTREL, it seems. 2003-06-30 00:49:25 +00:00
simonb
a9f5b3f871 KNF- blank lines before code at start of functions. 2003-06-05 10:41:32 +00:00
christos
683092605c Add RTLD_FIRST, RTLD_NEXT, RTLD_DEFAULT, from FreeBSD 2003-05-30 15:43:33 +00:00
petrov
458dbd70ac Fix alignment problem in debug output. 
Happens only under RTLD_DEBUG_RELOC.
 2003-05-23 20:13:50 +00:00
mycroft
f57f7ac072 Back out previous change for now -- it needs more work. 2003-04-24 16:55:29 +00:00
mycroft
8826c5e475 Attempt to give dlsym() the same symbol-searching semantics as _rtld_bind(). 
Tested in a handful of cases.
Reviewed by: a dead silence
 2003-04-23 17:40:25 +00:00
scw
0b8f02edad Handle unaligned relocations, and RELATIVE relocs with non-zero addends. 
This gets binaries linked against libstdc++ working (FSVO "working").
 2003-04-21 11:54:46 +00:00
scw
e6b13790fa SH5 needs __HAVE_FUNCTION_DESCRIPTORS defined in order for ld.elf_so 
to resolve SHmedia function pointers correctly.
 2003-03-26 14:46:32 +00:00
scw
d174ad2eab Add support for shared libraries/dynamically linked binaries on sh5. 
With the latest SuperH toolchain, NetBSD/evbsh5 can now
run with a fully dynamic userland (modulo a few remaining
gremlins affecting a couple of binaries).
 2003-03-25 13:11:53 +00:00
taca
28d2056e12 make it compile in /usr/src/rescue directory. 2003-03-06 17:01:27 +00:00
matt
7b28c56025 Align psections to their specified alignment (if possible). Use 
mmap(2) MAP_ALIGNED.
 2003-03-06 07:34:56 +00:00
mycroft
7cbba1750d Shorten rtld_start() by 2 instructions or 8 bytes, and make it not use GOT 
entries.
 2003-03-02 22:56:14 +00:00
mycroft
d2fd5f837d Shorten rtld_start() slightly -- there's a base-relative _DYNAMIC pointer at 
the beginning of the GOT, so we don't need an extra one here.  Also, remove a
bogus comment -- we do in fact have to do fixups, because there are pointers in
ld.elf_so's data segment that need to be relocated.
 2003-03-02 22:03:40 +00:00
mycroft
33131cb294 Update copyright. 2003-03-01 15:14:59 +00:00
christos
861ff9be73 we have constants for all this crap. don't hard-code things. 2003-02-28 23:05:24 +00:00
mycroft
9939b38056 Eliminate GOT usage in rtld_start() on this platform, too. 2003-02-28 22:37:35 +00:00
thorpej
527c1efca7 Use the "__NetBSD_Version__" constant rather than the "NetBSD" constant 
in the NetBSD version note.  The old "NetBSD" constant was stuck in stone,
and thus didn't really convey any useful information.
 2003-02-28 18:20:33 +00:00
mycroft
9cb7d16b11 Similar to other rela platforms, do not use any GOT entries (other than the 
first entry, which is a special case) in rtld_start, because they could be
all 0s.  Instead we use the difference between the real _DYNAMIC address
(which we can determine on 68k with a "lea (%pc,_DYNAMIC),..." and the
base-relative one (at the beginning of the GOT) to figure out the relocation
offset.

Not needed for binutils-current, but I might as well fix it now.
 2003-02-28 07:06:16 +00:00
mycroft
eea1001a73 Adjust for the fact that the GOT is all 0s in new binutils -- do the trick of 
disassembling a call to _DYNAMIC to determine its real address, and using the
first entry of the GOT as its base-relative address.

It's evil, but it works.
 2003-02-27 05:39:42 +00:00
uwe
6a4d4259ae Do not add ${LIBC_PIC} to DPADD if MKPICINSTALL is "no". 2003-02-26 06:03:40 +00:00
wiz
990562bfef .Nm does not need a dummy argument ("") before punctuation or 
for correct formatting of the SYNOPSIS any longer.
 2003-02-25 10:34:36 +00:00
mycroft
c42fd7b479 Revert previous change. 2003-02-21 01:12:56 +00:00
fvdl
c8ba6436ed If fstat info was passed, and from it it can be seen that the file size 
is smaller than an ELF header, don't even bother to try to look at it.
Avoids coredumps with zero-sized files.
 2003-02-06 12:38:17 +00:00
matt
0655a07988 Fix bug where only 2/3 of the PLT was being synched with the icache. 
PLT entries are 12 bytes.  Add a #define for that and replace the
explicit values with the PLT_ENTRY_SIZE.  This bug can cause random
SIGILL signals to happen.
 2003-01-11 01:33:56 +00:00
junyoung
8707cd2a36 Gracefully exit when invoked directly. Use of assert() here caused a segfault. 
Address PR#11785.
 2002-12-14 15:37:57 +00:00
junyoung
9e11602ee9 Remove comment which is not true any more. alpha and i386 support 
R_xxx_COPY relocations.
 2002-12-14 09:13:00 +00:00
junyoung
fd1f5e8f1b A bit speedup: in _rtld_load_object(), save the number of calls to 
strcmp() by performing path name length comparison first. In the test
with Mozilla, the number was reduced to 1068 from 7182 (yes, we saved
6114 strcmp()!).
 2002-12-05 04:56:56 +00:00
thorpej
044aeabaad Bintuils-current initializes the GOT entries to 0 (instead of the 
base-relative offsets that were placed there previously), so we
must use a different mechanism to compute our reloc base.

Patch from Charles Hannum.
 2002-12-04 01:19:37 +00:00
mycroft
be3692c5a7 Back out the last two changes. They were misguided, and the code worked 
correctly before.
 2002-11-25 19:49:25 +00:00
fvdl
100e201ec6 Replace return -1 in rtld_bind with _rtld_die() call. 2002-11-24 18:19:23 +00:00
fvdl
d93db1cfce Implement self-relocation as is required now. 2002-11-24 18:16:45 +00:00
fvdl
5505734fa9 For the debug case, print relocbase as well at the start of _rtld(). 2002-11-24 18:13:30 +00:00
junyoung
2cc0cde8f5 Now _rtld_relocate_objects() returns with error as soon as any of 
subsequent calls in it fails.

Spotted by wiz and enami.
 2002-11-22 04:39:37 +00:00
junyoung
b5ffe4c33c Simplify code a bit. 2002-11-21 19:09:56 +00:00
nathanw
15f633fbd3 In _rtld_load_library(), ensure that the old _rtld_error state (a message from 
a previous error, or NULL) is preserved if the search eventually succeeds.

Addresses the problem pointed out in PR pkg/19024.
 2002-11-14 21:07:46 +00:00
nathanw
6c24ccfd1f Remove "extern const chat *_rtld_error_message;". There is no such 
variable, and never has been.
 2002-11-14 20:11:48 +00:00
matt
01ba93bc3c Convert to register prefixes. 2002-10-31 20:23:25 +00:00
thorpej
b777dba640 _rtld_bind(): Don't use "rela" until after we've (potentially) adjusted 
it.
 2002-10-18 20:35:25 +00:00
junyoung
d0c512001c Embedded whitespace in dirname is supported again. 2002-10-06 01:36:36 +00:00
junyoung
2036ad0c3f A line whose length is 0 always begins with '#'. 2002-10-05 16:26:37 +00:00
junyoung
e4d4608a8b Minor cleanup. 2002-10-05 16:13:31 +00:00
junyoung
1b5e50eb7b Disable DEBUG again. 2002-10-05 15:52:15 +00:00
junyoung
2e85345237 Better fix of parser bug. 2002-10-05 15:43:56 +00:00
junyoung
89342b95bb Don't call _rtld_process_mapping() with null string. 2002-10-05 15:04:49 +00:00
mycroft
80b0665a93 Simplify the hint file parser a bit. 2002-10-05 12:23:39 +00:00
mycroft
ad8ccd6290 Minor cleanup. 2002-10-05 11:59:03 +00:00
mycroft
5d4bc1adf5 Make this work for ldd again. 2002-10-05 00:13:27 +00:00
mycroft
2a88686d7a Recode _rtld_elf_hash() so it compiles better (at least on i386 and arm). 
Still could be better on i386, but only written in assembler...
 2002-10-04 20:34:10 +00:00
mycroft
6f56cdc91f Rearrange _rtld_map_object() a little, so that we don't have to have the first 
page of the object double-mapped.  Not that it matters much, but someone was
whinging about it.
While I'm at it, nuke obj->phdr and obj->phsize; they're unused.
 2002-10-04 18:50:43 +00:00
mycroft
0a519951b5 Pull out some objlist functions in ldd. 2002-10-04 04:04:26 +00:00
mycroft
3c57a33db5 Don't actually bother maintaining _rtld_list_main and _rtld_list_global in 
ldd.
 2002-10-04 04:01:13 +00:00
mycroft
dfaba15604 Move the definition of _rtld_list_main so ldd builds again. 2002-10-04 03:59:40 +00:00
mycroft
4172074119 Skip the lazy PLT relocation if relocbase==0 (useful if libraries are loaded 
at their VMA address).
 2002-10-03 20:39:22 +00:00
mycroft
7a48cdb883 As seen on tech-userlevel... 
There are several optimizations here:

1) Objects on _rtld_list_main do not participate in the DAG structures
   at all.  This is okay because all symbols must be resolvable at
   link/load time, and _rtld_list_main is always searched first, so
   any references from those objects must necessarily be resolved to
   other objects on _rtld_list_main.

   (Making this work completely required setting obj->main a bit
   earlier; hence the RTLD_MAIN hack.)

2) Objects on _rtld_list_main are not put on _rtld_list_global,
   preventing an extra search.

3) A bit is used to keep track of whether an object is on
   _rtld_list_global, so we don't have to do a silly linear search.

4) A small attempt is made to prevent objects being put on the DAG
   lists multiple times (using a silly linear search).

The sum of this appears to be a ~10% (.3s) reduction in Mozilla's
startup time on my 800MHz box.

Also, make sure _rtld_objmain->path is always set, just to make the
debug output nicer.
 2002-10-03 20:35:19 +00:00