Build glibc programs and tests as PIE by default and enable static-pie
automatically if the architecture and toolchain supports it.
Also add a new configuration option --disable-default-pie to prevent
building programs as PIE.
Only the following architectures now have PIE disabled by default
because they do not work at the moment. hppa, ia64, alpha and csky
don't work because the linker is unable to handle a pcrel relocation
generated from PIE objects. The microblaze compiler is currently
failing with an ICE. GNU hurd tries to enable static-pie, which does
not work and hence fails. All these targets have default PIE disabled
at the moment and I have left it to the target maintainers to enable PIE
on their targets.
build-many-glibcs runs clean for all targets. I also tested x86_64 on
Fedora and Ubuntu, to verify that the default build as well as
--disable-default-pie work as expected with both system toolchains.
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Only the placeholder compatibility symbols are left now.
The __errno_location symbol was removed (moved) using
scripts/move-symbol-to-libc.py.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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.
