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730 Commits

Author SHA1 Message Date
matt 483a1c95a2 Fix problem with bss-plt objects which a reloc index, not offset. 
(secure-plt uses an offset (index*sizeof(rela), bss-plt uses an index)
secure-plt will now take the offset and divide by 12 for an index.
 2011-02-10 02:28:20 +00:00
skrll 3770380428 Unbreak gdb by ensuring _rtld_debug_state is in the dynamic symbol table. 
mmm 1 line diffs

mmm not breaking backwards compatibility for anything known/unknown or
public/private.
 2011-01-25 12:25:43 +00:00
matt 709c8a2f01 Move powerpc gotptr to the end to preserve binary compatibility. 2011-01-16 15:56:37 +00:00
matt b094d98191 Warn about DT_TEXTRELs 2011-01-16 02:36:05 +00:00
matt d31dbd7578 Add secure-plt support for powerpc to ld.elf_so. As part of this, we have to 
stop calling into the GOT/_DYNAMIC since they are no longer executable.
 2011-01-16 01:22:29 +00:00
skrll f1d73a2c94 Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked 
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.
 2010-12-24 12:41:42 +00:00
skrll 1f45aab781 Sprinkle some KNF. 2010-12-19 17:26:51 +00:00
skrll ad7786ec8b Remove unnecessary #ifdef RTLD_DEBUG 2010-12-19 17:17:50 +00:00
wiz 617acddc41 Remove superfluous Pp. 2010-12-17 08:50:26 +00:00
skrll 1ee8ff33ba Remove implementation detail. 
Bump date.
 2010-12-17 07:04:52 +00:00
joerg c4120e324e Replace use of errlist with a single concatenated version and an offset 
array. This requires less storage and avoids one runtime relocation per
errno value.
 2010-12-16 22:52:32 +00:00
joerg 67cc8c0871 Don't use normal environment handling functions from libc, but iterate 
once over the array and clean out entries as needed.
 2010-12-16 22:47:27 +00:00
skrll 126c589398 s/rdbg/dbg/ in a few places. 2010-12-16 19:59:39 +00:00
skrll 76d5f138f4 Remove incorrect comment. 2010-12-16 19:35:38 +00:00
wiz fbc697a1ed Note that $ORIGIN kernel support (in kern/kern_exec.c) is currently disabled. 
Info from skrll@.
Bump date.
 2010-12-16 19:25:41 +00:00
joerg 67e01e0a99 Build ld.elf_so with -fvisibility=hidden. Exploit this for i386/x86_64 
to simplify the assembler code.
 2010-12-05 00:56:06 +00:00
joerg 91118529e4 ANSIfy 2010-12-03 23:07:49 +00:00
joerg 239c31f883 Add comment about the unusual stack alignment in .rtld_bind_start. 2010-12-03 22:48:25 +00:00
tron 1fbd900608 Don't use internal libc function __findenv(). 2010-11-14 22:09:16 +00:00
christos acfd35dad9 PR/44010: YAMAMOTO Takashi: sbrk: grow 0xb3ba2000 failed, error = 12" 
(due to setenv changes?)
Provide a mini unsetenv that does not allocate/free memory and does not
bother about locking.
 2010-10-29 15:08:17 +00:00
skrll 8b916d603d Add cast so that usr.bin/ldd/elf32 builds. 2010-10-16 17:48:12 +00:00
skrll e6cdac9c4b Implement dl_iterate_phdr. 
Somewhat taken from FreeBSD. Manual page from OpenBSD.
 2010-10-16 10:27:06 +00:00
skrll 0a77584d8f Revert previous for now. It's part of a larger commit which will arrive 
soon.
 2010-10-15 15:08:05 +00:00
skrll a048346afd Be more tolerant to the location of PT_PHDR in the segment list. 2010-10-15 07:22:44 +00:00
christos 45bdf1678c restore binary compatibility for pre-2.0 binaries, requested by skrll and core. 2010-10-10 21:27:16 +00:00
skrll a108583dc7 Oops. Remove trailing whitespace in previous. 2010-09-30 19:45:24 +00:00
skrll d965c46816 Improve debug output. 2010-09-30 19:43:11 +00:00
skrll 0e07ba7138 Add the magic branch instruction that is used by GCC's 
__canonicalize_funcptr_for_compare() function to fixup relocations in
order to do function pointer comparisons.

From OpenBSD.
 2010-09-30 19:32:40 +00:00
skrll 06acf46b03 Introduce a new type Elf_Symindx for use in decoding the symbol hash table 
section and allow this type to be overridden.

The ELF specification says it should always be uint32_t (Elf_Word), but
alpha decided to be different (not sure why). Define Elf_Symindx to be
uint64_t on alpha.

Alpha no longer uses non-standard definitions of Elf64_Sword and
Elf64_Word.  Remove the ability to override these types.

Fixes ld.elf_so after Herculean effort from me and martin.
 2010-09-30 09:11:18 +00:00
matt af56990d0c Make the GOT1_MASK 64-bit clean. 2010-09-24 15:20:52 +00:00
skrll 8f77c5159b Comment reformat. 2010-09-24 12:00:10 +00:00
skrll 2c56298dd9 Wrap long line. 2010-09-24 11:59:28 +00:00
skrll 09601c884f Whitespace. 2010-09-24 11:57:11 +00:00
skrll 6229c56fea Wrap long lines 
Reformat comments.
 2010-09-24 11:41:46 +00:00
joerg 11fdf81f84 Avoid casting from d_val to plttype of different signedness. 
Just two booleans for the same purpose.
 2010-09-23 13:03:35 +00:00
skrll 07666b6356 Wrap long line. 2010-09-11 11:11:52 +00:00
joerg 6972211664 Stricter matching for _rtld_invalid_paths by ensuring separator. 
Use mem* functions instead of str* for strings of known size.
 2010-08-07 19:47:34 +00:00
joerg f40b256f09 Reduce header pollution for mdreloc.c. Make Obj_Entry argument of 
_rtld_relocate_nonplt_objects non-const in preparation for TLS support.
 2010-08-06 16:33:17 +00:00
mrg c8cf27943d make sure to look in CFLAGS, COPTS and CPPFLAGS for abi options. 
fixes sgimips64 build of n64 ld.elf_so.
 2010-07-11 07:43:12 +00:00
mrg 4c92852a80 remove almost all the ability to build netbsd with an a.out target. 
we're ELF now, and there are many missing checks against OBJECT_FMT.
if we ever consider switching, the we can figure out what new ones
we need but for now it's just clutter.

this doesn't remove any of the support for exec_aout or any actually
required-for-boot a.out support, only the ability to build a netbsd
release in a.out format.  ie, most of this code has been dead for
over a decade.

i've tested builds on vax, amd64, i386, mac68k, macppc, sparc, atari,
amiga, shark, cats, dreamcast, landisk, mmeye and x68k.  this covers
the 5 MACHINE_ARCH's affected, and all the other arch code touched.
it also includes some actual run-time testing of sparc, i386 and
shark, and i performed binary comparison upon amiga and x68k as well.


some minor details relevant:
- move shlib.[ch] from ld.aout_so into ldconfig proper, and cut them
  down to only the parts ldconfig needs
- remove various unused source files
- switch amiga bootblocks to using elf2bb.h instead of aout2bb.h
 2010-07-06 05:59:50 +00:00
joerg ff0f2fb483 Use fast_remainder32 for the ELF hash. For the hot cache case, this 
speeds up Firefox startup by over 2% on AMD64.
Limit hash table buckets to 32bit.
 2010-04-05 14:01:26 +00:00
skrll 134b0fcc8f Only apply -Wno-stack-protector where alloca is used. 2010-03-20 16:36:35 +00:00
roy 51085124f6 Use the gcc directive to disable SSP warnings. 2010-03-19 20:53:50 +00:00
roy d5e8f757b8 Use alloca(3) instead of local xmalloc for creating our DoneLists. 
This allows threaded programs to use us a little better, PR lib/43005.
We need to disable SSP when using alloca.
 2010-03-18 22:17:55 +00:00
roy b02ec7e9f8 Implement negative cache checks for symbol lookups. 
Uses the Donelist idea from FreeBSD.
 2010-02-27 11:16:38 +00:00
skrll d306de736d Restore backwards compatibility for binaries referencing the main 
Obj_Entry.
 2010-01-17 08:04:20 +00:00
skrll 2e0bcc8d3b Remove cargo cult dlinfo entry point. 2010-01-16 10:37:51 +00:00
skrll 418048d731 Put the dlopen,and friends entry points back. 
They're needed by pre-2.0 binaries. Backward compatibiliity for these
was broken by another commit recently which I'll fix shortly.
 2010-01-15 07:07:11 +00:00
skrll 699646b3ea Remove the entry points for dlopen() and friends. They haven't been used 
since Aug 2003.
 2010-01-14 21:52:07 +00:00
skrll 15b7ff0199 Make DEBUG build compile. 2010-01-14 12:12:07 +00:00