summaryrefslogtreecommitdiff
path: root/libexec/ld.so/alpha
AgeCommit message (Collapse)Author
2018-07-09unify the various per-arch syscall.h as much as possibleTheo de Raadt
ok kettenis guenther
2017-10-27Use <elf.h> instead of <elf_abi.h>Martin Pieuchot
ok jasper@, jca@, deraadt@
2017-10-10__plt_{start,end} are no longer generated or necessary, having beenPhilip Guenther
superseded by the generic ?WX and RELRO support. Stop trying to look up and use them. ok kettenis@ deraadt@
2017-08-27Replace heaps of hand-written syscall stubs with a simpler frameworkTheo de Raadt
which is largely MI. ok visa kettenis
2017-02-16correct format strings, ok guentherTheo de Raadt
2017-01-24On fatal errors, kill ourselves with thrkill(0,9,NULL) instead ofPhilip Guenther
simply exiting, via helper functions _dl_die(), _dl_diedie(), and _dl_oom(). prompted by a complaint from jsing@ ok jsing@ deraadt@
2017-01-21_dl_exit() is __dead, so it should return void.Philip Guenther
Move _dl_mmap() and _dl_mquery() inlines from archdep.h to syscall.h and remove pointless casts and unnecessary parens. ok kettenis@
2017-01-20Delete ancient macros and unnecessary #includesPhilip Guenther
ok deraadt@
2017-01-09Remove dependency on __got_{start,end} symbols and look at PT_GNU_RELROMark Kettenis
instead. Result in a few more pages that aren't writable on some platforms (such as hppa). Based on an initial diff from guenther@. Thanks to deraadt@ for testing. ok guenther@
2016-08-31alpha and sh have TCB_SET() macros so don't need _dl_set_tcb()Philip Guenther
ok deraadt@
2016-08-28ld.so doesn't need gettimeofday or lstat stubs any morePhilip Guenther
ok deraadt@
2016-08-07As with csu, alpha passes &_DYNAMIC to _reloc_alpha_got(), so justPhilip Guenther
save that and pass it to _dl_boot_bind() too
2016-07-04Remove prebind support: binding to symbol table indices is too fragilePhilip Guenther
for our development process. ok kettenis@ deraadt@
2016-06-21When handling DT_TEXTREL only set the mapping to READ+WRITE, ignoreTheo de Raadt
possible EXEC permission for the section, because the proper permission is set late, and there are no thread concerns here. Avoids W^X issues in oddball cases. ok guenther kettenis
2016-05-07Use a Thread Information Block in both single and multi-threaded programs.Philip Guenther
This stores errno, the cancelation flags, and related bits for each thread and is allocated by ld.so or libc.a. This is an ABI break from 5.9-stable! Make libpthread dlopen'able by moving the cancelation wrappers into libc and doing locking and fork/errno handling via callbacks that libpthread registers when it first initializes. 'errno' *must* be declared via <errno.h> now! Clean up libpthread's symbol exports like libc. On powerpc, offset the TIB/TCB/TLS data from the register per the ELF spec. Testing by various, particularly sthen@ and patrick@ ok kettenis@
2016-03-21Rename the system call sendsyslog2 to sendsyslog. Keep the old oneAlexander Bluhm
as osendsyslog for a while. The three argument variant is the only one that will stay. input kettenis@; OK deraadt@
2016-03-21Switch ld.so's stack smash handler from sendsyslog to sendsyslog2Philip Guenther
and pass the LOG_CONS flag like libc's handler. ok deraadt@ bluhm@ (who had a similar diff)
2016-03-20Export environ and __progname, making the latter a copy of just the filenamePhilip Guenther
portion like crt0 does. This is prep for eliminating _dl_fixup_user_env() Mark almost everything in resolve.h as hidden, to improve code generation. ok kettenis@ mpi@ "good time" deraadt@
2015-12-22assign pointers to NULL rather than 0mmcc
2015-12-06Simplify the relocation code for the ld.so bootstrap and static pie: trackPhilip Guenther
just the dynamic tags are needed instead of reusing the generic elf_object_t structure. testing and feedback from miod@ ok kettenis@
2015-11-15ldd(1) sets environment variable LD_TRACE_LOADED_OBJECTS to tell ld.soTheo de Raadt
that it should show information about the program it loads, rather than run it. In that specific case, ld.so can pledge to "stdio rpath" to ensure that code path in ld.so has no bugs. Yes, a pledge in ld.so.... who'd have thought! ok guenther
2015-11-02Factor out the logic for mprotecting the memory between two symbols intoPhilip Guenther
a new MI routine _dl_protect_segment(), and use that for protecting the GOT and--on some archs--the PLT. Amazing testing turnaround by miod@, who apparently violated relativity to get back results on some archs as fast as he did
2015-09-23Don't be too agressive write-protecting the GOT and PLT. If we have no clueMark Kettenis
where they end, there is a good chance they are sharing a page with .data, which obviously needs to remain writable. So only attempt to make them read-only if we know they have a non-zero size. Original diff from guenther@ based on an earlier diff from me. Fixes ld -Z on alpha. ok miod@, guenther@
2015-09-19kbind has eliminated the need for and use of the bind lock. Delete it, thePhilip Guenther
the callback, and the sigprocmask stub. Keep around the DL_SETBINDLCK case until libpthread stops using it. discussed with miod@ at l2k15 ok kettenis@
2015-09-13Rename __sysctl syscall to just sysctl, as the userland wrapper is no longerPhilip Guenther
necessary ok deraadt@ jsing@
2015-08-26Kbind 3: The Legend Continues!Philip Guenther
Use kbind for lazy binding GOT/PLT updates on alpha and mips64. While here add some gcc __predict hints. Much discussion with and assistance from miod and deraadt ok deraadt@
2015-05-29Make ld.so on alpha cope with binaries built with secureplt (where secure hereMiod Vallat
means read-only, which our ld.so already enforced, but a smaller plt section).
2014-12-27Make ld.so process only R_ALPHA_RELATIVE relocations during early GOTMark Kettenis
relocation in _reloc_alpha_got(), and teach RELOC_RELA() to skip R_ALPHA_NONE relocations (which are just nops used to fill out the relocation table). Handling R_ALPHA_NONE relocations will be necessary for static PIE support and it is not inconceivable that ld.so will end up with such relocations at some point. ok kurt@
2014-11-03Eliminate RTLD_PROTECT_PLT: ld.so is built with -Bsymbolic so thePhilip Guenther
PLT is empty/unused. On at least macppc and sparc64, ld.so's attempt to mprotect its PLT could instead hit its own allocated data and cause a segfault shortly there after. While here, take a shot at preventing the same issue with the GOT by checking for __got_start != __got_end. reproduction *with ktracing* by afresh1@ provided the key data ok miod@ deraadt@
2014-09-01Sync readlink(2) with IEEE Std 1003.1-2008.Doug Hogan
discussion, help and ok guenther@
2014-07-28_dl_sigprocmask() works better when it actually saves the returned sigmaskPhilip Guenther
asm suggestion from kettenis@ tested by miod@, suffering under the brain-destroying summer heat
2014-07-14Now that we have sendsyslog(2), we can directly use it in theTheo de Raadt
(previously completely retarded) stack_smash_handler of ld.so ok beck miod tedu
2014-07-09_dl_fcntl() is no longer used; kill the stubsPhilip Guenther
ok otto@ miod@
2014-07-06move from sysclt(KERN_ARND) to getentropy(2); ok miod@, kettenis@Otto Moerbeek
2014-07-05Mark _dl_exit __dead.Miod Vallat
2014-07-05Add more sugar to generate syscall stubs; and make sure errors are reportedMiod Vallat
with a negative value (I'm looking at you, _dl_mmap);
2014-04-16It's been a quarter century: we can assume volatile is present with that name.Philip Guenther
2013-12-23Make ld.so pass its cleanup handler in v0 and stop calling atexit(4) directlyMark Kettenis
from ld.so on alpha. Note that this means that binaries built before early december may no longer call destructors in shared libraries implemented in C++. Update your packages!
2013-11-10Make sure we pass a NULL cleanup argument to __start() by initializingPhilip Guenther
a2 to zero in the kernel and ld.so. This will let us add the conditional atexit() call to crt0 ok kettenis@ miod@
2013-08-13Switch time_t, ino_t, clock_t, and struct kevent's ident and dataPhilip Guenther
members to 64bit types. Assign new syscall numbers for (almost all) the syscalls that involve the affected types, including anything with time_t, timeval, itimerval, timespec, rusage, dirent, stat, or kevent arguments. Add a d_off member to struct dirent and replace getdirentries() with getdents(), thus immensely simplifying and accelerating telldir/seekdir. Build perl with -DBIG_TIME. Bump the major on every single base library: the compat bits included here are only good enough to make the transition; the T32 compat option will be burned as soon as we've reached the new world are are happy with the snapshots for all architectures. DANGER: ABI incompatibility. Updating to this kernel requires extra work or you won't be able to login: install a snapshot instead. Much assistance in fixing userland issues from deraadt@ and tedu@ and build assistance from todd@ and otto@
2013-06-13Appease LLVM warning..Brad Smith
error: indirection of non-volatile null pointer will be deleted, not trap [-Werror,-Wnull-dereference] Suggestion from matthew@ Ok matthew@ miod@
2013-06-09Constify the mib argument of sysctl().Miod Vallat
ok matthew@ millert@
2013-06-01Make all the syscall prototypes consistent with their real forms for types,Philip Guenther
whitespace, and no argument names. ok matthew@ deraadt@
2013-06-01Introduce ltrace(1). This tool works with ld.so to inject utrace record forMiod Vallat
each plt call, allowing to trace a binary linked against shared library at the public function call level. To do so, ltrace(1) sets up some environment variables to enable plt tracing in ld.so, and invokes ktrace(2) for utrace events. ld.so will force lazy binding and will send an utrace record in the plt resolver, without updating the plt. Minimal filtering capabilities are provided, inspired by Solaris' truss -u, to limit tracing to libraries and/or symbol names. Non-traced libraries and symbols will have the regular resolver processing, with the expected plt update. "Get it in" deraadt
2013-05-08Implement symbol caching and RELACOUNT/RELCOUNT optimizations.Philip Guenther
Much assistance and testing by miod ok miod@
2013-04-05- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.Kurt Miller
Improvements and okay matthew@, millert@, guenther@
2012-12-05Remove excessive sys/cdefs.h inclusionTheo de Raadt
ok guenther millert kettenis
2012-10-24Garbage-collect the _dl_stat() routine, now unusedPhilip Guenthe
ok matthew@ deraadt@
2011-11-19Build ld.so on alpha with -mbuild-constants, so large integerChristian Weisgerber
constants are constructed with several instructions rather than loaded from the data segment, avoiding relocations. This fixes ld.so with gcc4. From miod@, ok jsg@
2011-04-08Do not use NULL in integer comparison.Theo de Raadt
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-14 10:23:12 +0000