Writable, executable segments defeat security hardening. The
existing check for DT_TEXTREL does not catch this.
hppa and SPARC currently keep the PLT in an RWX load segment.
This patch removes the arch-specific atomic instruction, relying on
compiler builtins. The __sparc32_atomic_locks support is removed
and a configure check is added to check if compiler uses libatomic
to implement CAS.
It also removes the sparc specific sem_* and pthread_barrier_*
implementations. It in turn allows buidling against a LEON3/LEON4
sparcv8 target, although it will still be incompatible with generic
sparcv9.
Checked on sparcv9-linux-gnu and sparc64-linux-gnu. I also checked
with build against sparcv8-linux-gnu with -mcpu=leon3.
Tested-by: Andreas Larsson <andreas@gaisler.com>
Add unwind info to __libc_start_main so that unwinding continues one
extra level to _start. Similarly add unwind info to backtrace.
Given many targets require this, do this in a general way.
* csu/Makefile: Add -funwind-tables to libc-start.c.
* debug/Makefile: Add -funwind-tables to backtrace.c.
* sysdeps/aarch64/Makefile: Remove CFLAGS-backtrace.c.
* sysdeps/arm/Makefile: Likewise.
* sysdeps/i386/Makefile: Likewise.
* sysdeps/m68k/Makefile: Likewise.
* sysdeps/mips/Makefile: Likewise.
* sysdeps/nios2/Makefile: Likewise.
* sysdeps/sh/Makefile: Likewise.
* sysdeps/sparc/Makefile: Likewise.
* sysdeps/sparc/Makefile: Add -fPIC to ASFLAGS-.os here....
* sysdeps/sparc/sparc32/Makefile: rather than here...
* sysdeps/sparc/sparc64/Makefile: and here.
/
* sysdeps/sparc/Makefile: Add -fPIC when building crt{i,n}.S
* sysdeps/sparc/crti.S: New file.
* sysdeps/sparc/crtn.S: New file.
* sysdeps/sparc/sparc32/Makefile: Remove initfini handling.
* sysdeps/sparc/sparc64/Makefile: Likewise.
nptl/
* sysdeps/sparc/Makefile: Add -fPIC when building pt-crti.S and crtn.S
* sysdeps/sparc/sparc-mcount.S: Likewise.
* sysdeps/sparc/Makefile: Add sparc-mcount target to
sysdep_routines in gmon directory.
2008-05-14 David S. Miller <davem@davemloft.net>
* sysdeps/sparc/machine-gmon.h: New file.
* sysdeps/sparc/sparc-mcount.S: Likewise.
* sysdeps/sparc/Makefile: Add sparc-mcount target to
sysdep_routines in gmon directory.
1997-08-14 03:14 Ulrich Drepper <drepper@cygnus.com>
* elf/dl-minimal.c: Don't use relative #include paths.
(malloc): Don't try to initialize _dl_pagesize, it already is.
(__sigjmp_save, longjmp): Reformat.
* sysdeps/generic/dl-sysdep.c: Implement _dl_show_auxv function to
show content of auxiliary array.
(_dl_sysdep_start): Remember start of auxiliary vector.
* sysdeps/mach/hurd/dl-sysdep.c: (_dl_show_auxv): New dummy function.
* elf/link.h: Add prototype for _dl_show_auxv.
* elf/rtld.c (dl_main): Call _dl_show_auxv if LD_SHOW_AUXV envvar
is present.
* libio/iofdopen.c: Better prepare for use in libstdc++.
* libio/iofflush.c: Likewise.
* libio/iofgetpos.c: Likewise.
* libio/iofgets.c: Likewise.
* libio/iofopen.c: Likewise.
* libio/iofputs.c: Likewise.
* libio/iofread.c: Likewise.
* libio/iofsetpos.c: Likewise.
* libio/ioftell.c: Likewise.
* libio/iofwrite.c: Likewise.
* libio/iogetdelim.c: Likewise.
* libio/iogets.c: Likewise.
* libio/iopopen.c: Likewise.
* libio/ioputs.c: Likewise.
* libio/iosetbuffer.c: Likewise.
* libio/iosetvbuf.c: Likewise.
* libio/ioungetc.c: Likewise.
* libio/iovsprintf.c: Likewise.
* libio/iovsscanf.c: Likewise.
* manual/creature.texi: Mention _XOPEN_SOURCE_EXTENDED in correct
place.
* manual/math.texi: Add comment to sincos decsription to say it's a
GNU extension.
Fix description of random function.
* posix/fnmatch.h: Recognize Windog by _WINDOWS32 not WIN32.
* posix/glob.c: Likewise. Handle stupid system headers on SunOS.
Add casts for all __alloca calls.
* posix/glob.h: Recognize Windog by _WINDOWS32 not WIN32.
Declare additional GLOB_* constants also if _GNU_SOURCE is defined.
Patches by Paul D. Smith <psmith@BayNetworks.COM>.
* stdio-common/_itoa.c: Don't use relateive #include paths.
* sysdeps/i386/fpu/bits/mathinline.h: Enable optimizations even for
gcc 2.7.
(atan): Loading 1.0 from memory does not pay off.
(asinh): Fix typo.
1997-08-13 09:44 Philip Blundell <Philip.Blundell@pobox.com>
* sysdeps/stub/accept.c: Use socklen_t where necessary.
* sysdeps/stub/bind.c: Likewise.
* sysdeps/stub/connect.c: Likewise.
* sysdeps/stub/getsockname.c: Likewise.
* sysdeps/stub/getsockopt.c: Likewise.
* sysdeps/stub/recvfrom.c: Likewise.
* sysdeps/stub/sendto.c: Likewise.
* sysdeps/stub/setsockopt.c: Likewise.
1997-08-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* io/ftw.c (object_compare): Avoid memcmp when comparing scalar
types.
1997-08-12 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/libm-test.c (cbrt_test): Add epsilon for long double to
`cbrt (-0.001)'.
1997-08-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/stub/bits/string.h: Fix comment.
1997-08-01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/Makefile (routines): Remove dl-version.
(dl-routines): Add it here instead. This removes dead code from
libc.so.
1997-08-12 17:17 Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
* malloc/thread-m.h (thread_atfork, thread_atfork_static): New
macros to encapsulate pthread_atfork's functionality.
* malloc/malloc.c (ptmalloc_lock_all, ptmalloc_unlock_all): New
functions, registered via thread_atfork in the initialization
routine or via thread_atfork_static in global scope. This
ensures a consistent state of all locks across fork().
1997-08-11 23:00:32 1997 Mark Kettenis <kettenis@phys.uva.nl>
* login/programs/xtmp.c (compare_entry):
Partially undo patch made by Klaus Espenlaub. There
was no xtmp/utmp typo. Added comment to cclarify this.
* login/programs/xtmp.h: Likewise.
* posix/getopt.c: Recognize Windog by _WINDOWS32 not WIN32.
Patch by Paul D. Smith <psmith@BayNetworks.COM>.
1997-08-12 13:51 Ulrich Drepper <drepper@cygnus.com>
* login/getutid.c: Rename to __getutid and make getutid and getutxid
weak aliases.
Patch by ir. Mark M._Kettenis <kettenis@phys.uva.nl>.
1997-08-11 23:55 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/Makefile [subdir=misc] (sysdep_headers):
Add bits/mman.h.
1997-08-11 08:51:21 1997 H.J. Lu <hjl@gnu.ai.mit.edu>
* stdlib/fmtmsg.c (fmtmsg): Add static to
__libc_once_define macro.
* libc.map (__progname_full, __progname): Added.
1997-08-04 08:31 H.J. Lu <hjl@gnu.ai.mit.edu>
* sysdeps/unix/sysv/linux/if_index.c (if_nametoindex): Return 0
if SIOGIFINDEX is not defined.
(if_indextoname): Initialize "result" to NULL.
(if_nametoindex, if_nameindex): Fix ENOSYS setting.
1997-08-11 11:58 Richard Henderson <rth@cygnus.com>
Sparc ISO C 9x exception handling:
* sysdeps/sparc/fpu/bits/mathdef.h: New file.
* sysdeps/sparc/fpu/fclrexcpt.c: New file.
* sysdeps/sparc/fpu/fegetenv.c: New file.
* sysdeps/sparc/fpu/fegetround.c: New file.
* sysdeps/sparc/fpu/feholdexcpt.c: New file.
* sysdeps/sparc/fpu/fesetenv.c: New file.
* sysdeps/sparc/fpu/fesetround.c: New file.
* sysdeps/sparc/fpu/feupdateenv.c: New file.
* sysdeps/sparc/fpu/fgetexcptflg.c: New file.
* sysdeps/sparc/fpu/fraiseexcpt.c: New file.
* sysdeps/sparc/fpu/fsetexcptflg.c: New file.
* sysdeps/sparc/fpu/ftestexcept.c: New file.
* sysdeps/sparc/sparc32/fpu/bits/fenv.h: New file.
* sysdeps/sparc/sparc64/fpu/bits/fenv.h: New file.
1997-08-11 11:58 Richard Henderson <rth@cygnus.com>
Sparc64 merge:
* configure.in: Change up subdirectories, rename sparc8->sparcv8.
* csu/Makefile: Nuke need-nopic-initfini bits. The problem was
that sparc64 ld did not recognize pic relocs at all.
* elf/dl-deps.c: Include <string.h>.
* elf/do-rel.h (elf_dynamic_do_rel): Take reloc address and size
directly instead of the DT names to get them from.
* elf/dynamic-link.h (_ELF_DYNAMIC_DO_RELOC): New macro distilled
from ELF_DYNAMIC_DO_REL{,A}. Define a second version that accounts
for the possibility that DT_RELA and DT_JMPPLT overlap, as such is
the case on the Sparc.
* elf/elf.h: Stub out Elf64_Ver*, and make them the same as the
Elf32_Ver* bits. The linker does not even know to differentiate
between the word sizes. Someone should examine this and figure
out what the proper sizes of things should be for 64-bit hosts
before the sparc64 libraries are distributed.
* shlib-versions: Rename sparc64 ld.so to not conflict with sparc32
on the same machine.
Move old sysdeps/sparc contents to sysdeps/sparc/sparc32,
rename sparc8 subdir to sparcv8, move sysdeps/sparc64 content to
sysdeps/sparc/sparc64. Same for sysdeps/unix/sysv/linux/sparc.
* sysdeps/sparc/Implies: Do ieee754 here.
* sysdeps/sparc/configure.in: Move from sparc32/.
* sysdeps/sparc/sparc32/Implies: Do wordsize here.
* sysdeps/sparc/sparc64/Implies: Likewise.
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_load_address):
Use uninitialized .got to find load address instead of AT_BASE, as
the later does not exist when running ld.so directly.
* sysdeps/sparc/sparc32/fpu/fpu_control.h: Move from ../.
* sysdeps/sparc/sparc64/fpu/fpu_control.h: Likewise.
* sysdeps/sparc/sparc32/udiv_qrnnd.S: Clean up PIC support.
* sysdeps/sparc/sparc64/Makefile (sysdep_routines): Add s_finitel
and s_signbitl for stdio.
* sysdeps/sparc/sparc64/configure.in: Remove, we no longer need
nopic_initfini.
* sysdeps/sparc/sparc64/bsd-_setjmp.S: Remove.
* sysdeps/sparc/sparc64/bsd-setjmp.S: Remove.
* sysdeps/unix/sysv/linux/sparc/sparc64/bsd-_setjmp.S: New empty file.
* sysdeps/unix/sysv/linux/sparc/sparc64/bsd-setjmp.S: New empty file.
* sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S: Add __longjmp alias.
* sysdeps/unix/sysv/linux/sparc/sparc64/setjmp.S: Add weak _setjmp
and setjmp entry points.
* sysdeps/sparc/sparc64/dl-machine.h: Finish real implementation.
* sysdeps/sparc/sparc64/elf/crtbegin.S: Add copyright, fix PIC.
* sysdeps/sparc/sparc64/elf/crtend.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h (struct sigaction):
Fix sa_flags size for sparc64; add sa_restorer for kernel.
* sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Fix PIC.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscall.S: New file.
1997-08-10 18:29:08 1997 Mark Kettenis <kettenis@phys.uva.nl>
* login/login.c (login): Check for correct return value of
utmpname.
1997-08-11 16:49 Ulrich Drepper <drepper@cygnus.com>
* time/tzset.c (__tzset_internal): Correctly handle TZ strings
following incorrect old POSIX specs.
Patch by Paul Eggert <eggert@twinsun.com>.
* sysdeps/generic/bits/sigaction.h: Correct comment for SA_RESTART.
* sysdeps/unix/bsd/osf/bits/sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/bits/sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h: Likewise.
* sysdeps/unix/sysv/minix/bits/sigaction.h: Likewise.
* sysdeps/unix/sysv/sysv4/bits/sigaction.h: Likewise.
Reported by NIIBE Yutaka <gniibe@mri.co.jp>.
1997-08-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* manual/math.texi: Define the macros @mul and @infinity and use
them to format the multiplication and infinity signs.
(FP Comparison Functions): Use @code, not @math, for C code
examples.
* elf/dl-profile.c: Add descriptions and implement reading of
Mon Jan 20 03:02:50 1997 Ulrich Drepper <drepper@cygnus.com>
* Make-dist: Update and reformat copyright.
* Makeconfig: Likewise.
* assert/Makefile: Likewise.
* bare/Makefile: Likewise.
* ctype/Makefile: Likewise.
* dirent/Makefile: Likewise.
* gmon/Makefile: Likewise.
* gnulib/Makefile: Likewise.
* grp/Makefile: Likewise.
* hurd/Makefile: Likewise.
* intl/Makefile: Likewise.
* mach/Makefile: Likewise.
* malloc/Makefile: Likewise.
* manual/Makefile: Likewise.
* math/Makefile: Likewise.
* po/Makefile: Likewise.
* pwd/Makefile: Likewise.
* resource/Makefile: Likewise.
* setjmp/Makefile: Likewise.
* socket/Makefile: Likewise.
* string/Makefile: Likewise.
* sunrpc/Makefile: Likewise.
* sysdeps/alpha/Makefile: Likewise.
* sysdeps/gnu/Makefile: Likewise.
* sysdeps/m68k/fpu/switch/Makefile: Likewise.
* sysdeps/m68k/fpu/switch/68881-sw.h: Likewise.
* sysdeps/m68k/fpu/switch/switch.c: Likewise.
* sysdeps/mach/Makefile: Likewise.
* sysdeps/hurd/Makefile: Likewise.
* sysdeps/sparc/Makefile: Likewise.
* sysdeps/standalone/i960/nindy960/Makefile: Likewise.
* sysdeps/standalone/m68k/m68020/mvme136/Makefile: Likewise.
* sysdeps/unix/common/Makefile: Likewise.
* sysdeps/unix/sysv/Makefile: Likewise.
* sysdeps/unix/sysv/irix4/Makefile: Likewise.
* sysdeps/unix/sysv/sco3.2/Makefile: Likewise.
* sysdeps/unix/sysv/sysv4/Makefile: Likewise.
* sysdeps/vax/Makefile: Likewise.
* sysvipc/Makefile: Likewise.
* wcsmbs/Makefile: Likewise.
* wctype/Makefile: Likewise.
* elf/rtld.c (dl_main): Objects in LD_PRELOAD environment variable
are separated according to Sun docs by white space not colon.
* locale/C-time.c (_nl_C_LC_TIME): Use empty string to initialize
fields which are not defined for the C locale.
* sysdeps/m68k/fpu/switch/Makefile: Don't use ansidecl.h in constructed
files.
* sysdeps/m68k/fpu/switch/68881-sw.h: Likewise.
* sysdeps/m68k/fpu/switch/switch.c: Likewise.
Sun Jan 19 19:43:31 1997 Andreas Jaeger <aj@arthur.pfalz.de>
* time/strptime.c: Provide prototype for strptime_internal.
Sun Jan 19 23:46:27 1997 Ulrich Drepper <drepper@cygnus.com>
* glibcbug.in: We don't guarantee confidential handling. Set
field to always contain `no'.
Sun Jan 19 21:28:01 1997 Philippe De Muyter <phdm@info.ucl.ac.be>
* intl/explodename.c: Include sys/types.h.
* intl/l10nflist.c: Likewise.
Sat Jan 18 22:15:26 1997 Richard Henderson <rth@tamu.edu>
* config.make.in (install_root): New variable to make it easy to
install glibc somewhere other than /.
* shlib-versions: alpha-*-linux-* libc=6.1.
Since sigset_t no longer fits in a register, we can't pass in the
thread's initial mask so easily. Take this opportunity to simplify
the clone implementation by only accepting a single void* argument.
* sysdeps/unix/sysv/linux/alpha/clone.S: Only take one argument.
* sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/clone.S: Likewise.
* sysdeps/unix/sysv/linux/schedbits.h: Update clone prototypes.
* sysdeps/unix/sysv/linux/alpha/ioctl-types.h: Remove.
Default Linux version should be sufficient.
* sysdeps/unix/sysv/linux/alpha/sigprocmask.c: The osf_sigprocmask
system call wants the sigset dereferenced.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Add entries for
__syscall_ustat and __syscall_xmknod.
* sysdeps/unix/sysv/linux/alpha/xmknod.c: Include sys/sysmacros.h.
* sysdeps/unix/sysv/linux/sigset.h: Use longs instead of ints.
* sysdeps/unix/sysv/linux/tcsetattr.c: Fix pointer dereferences.
* sysdeps/unix/sysv/linux/alpha/sigsuspend.c: Add comment about
dependency to kernel type.
* sysdeps/unix/sysv/linux/alpha/termbits.h: Correct comment.
* stdio-common/vfscanf.c: Major change. Now read character
from stream only if needed. Before it was read after the
previous character was used.
Bug reported by Martin Goik <goma0002@FH-Karlsruhe.DE>
* stdio-common/tstscanf.c: Change test program so that return
value is != 0 if one test failed.
* sysdeps/m68k/Makefile (crypt): Variable removed.
* sysdeps/sparc/Makefile: Likewise.
* sysdeps/mach/hurd/i386/init-first.c: In cthreads case, handle
args on stack from kernel.
* posix/Makefile, sysdeps/alpha/Makefile,
* sysdeps/mach/hurd/Makefile, sysdeps/sparc/Makefile, Makefile,
* Makerules, Make-dist: Fix "cvs commit" cmds in rules to not fail
in the absence of CVS dirs.
* hurd/hurdstartup.c: Don't call __mach_init. Grok args from the
kernel on the stack properly.
* set-init.c: Never call _init/_fini; just run __libc_subinit.
* Makerules (LDFLAGS-c.so): Add -nostartfiles.
* mach/Machrules (LDFLAGS-$(interface.so)): Likewise.
* configure.in: Move defaulting of --with-elf and --with-gnu-*
based on host os outside the AC_CACHE_VAL for the sysdirs
calculation.
* Makeconfig (localedir, nlsdir): New variables.
* values.h: New file.
* Makefile (headers): Add values.h.
* locale/Makefile (distribute): Add error.h.
* locale/localedef.c: Include "error.h".
(main): Use error_message_count instead of warning_cntr.
* sysdeps/sparc/Makefile [subdir=crypt] (crypt): Reset only if set
to original value of `crypt'.
* sysdeps/unix/sysv/sysv4/solaris2/sparc/Makefile [subdir=crypt]
(crypt): New variable, set to crypt.solar.
