- Align hwcap names with kernel (arch/arm/kernel/setup.c)
- Align HWCAP_ARM_* definitions with kernel
- Make VFP and NEON as HWCAP_IMPORTANT, this can help in scenarios
where VFP/NEON HW optimizations can be utilized.
In a multithreaded environment the call to vfork was
incorrectly creating a stack frame. Given that the
child unwinds the stack frame first to call exec, it
will corrupt any values the parent stored in the stack
frame. The solution is to avoid creating a stack frame
unless required to call an error function, in which case
we are assured no child was created.
The getcontext, and setcontext functions should
not adjust the stack, and should load the stack
pointer from the machine context. Calling makecontext
should create a frame for spilled incoming arguments,
and sync uc_stack.ss_sp to the machine context.
We do not support calling getcontext, modifying ss_sp,
and calling setcontext directly.
The static program builds in libc were getting multiple
definition errors between dl-sysdep and dl-support.
Signed-off-by: Richard Henderson <rth@twiddle.net>
The initial implementation of makecontext()
supported only 8 arguments. This change adds
support for unlimited argument processing given
a large enough stack.
Adjust the value of SOCK_CLOEXEC to match the kernel
value used for accept4. This has never worked in the
past, and all old applications are broken, therefore
we change this value to match the kernel value.
Update F_SETOWN_EX and F_GETOWN_EX. Rearrange
the file to match other targets, reducing future
diffs against other targets and making maintenance
easier.
Similar to the problems I fixed for posix_fallocate
<http://sourceware.org/ml/libc-ports/2008-12/msg00007.html> and
fallocate <http://sourceware.org/ml/libc-ports/2009-05/msg00031.html>,
MIPS64 posix_advise also needs fixes to use the correct syscall
interfaces. Although the existing n32 posix_fadvise64 is OK, getting
posix_fadvise from syscalls.list does not work correctly, as this
function is supposed to return an error code instead of storing it in
errno as the generic syscall implementations from syscalls.list do.
In the switch to NPTL the pthrad_mutex_t, pthread_cond_t,
and pthread_rwlock_t structures were made binary compatible
with the Linuxthread versions. However, their aligment when
embedded in other structures was changed. When rebuilding
libstdc++ this was detected, and the following changes return
the structures to their original Linuxthreads alignments.
2009-11-25 Carlos O'Donell <carlos@codesourcery.com>
* sysdeps/unix/sysv/linux/hppa/nptl/bits/pthreadtypes.h:
Use correct alignment for pthread_mutex_t, pthread_cond_t,
and pthread_rwlock_t.
Cast oldval to the same type as ret to avoid warnings when
including atomic.h.
2009-11-22 Carlos O'Donell <carlos@codesourcery.com>
* sysdeps/unix/sysv/linux/hppa/bits/atomic.h: Avoid warnings
by casting oldval to int.
Place socket.h in the correct location.
2009-11-15 Carlos O'Donell <carlos@codesourcery.com>
[BZ #6676]
* sysdeps/unix/sysv/linux/hppa/socket.h: Move from here...
* sysdeps/unix/sysv/linux/hppa/bits/socket.h: ... to here.
Several constants are now defined in a generic file and no longer
need to be defined in the hppa specific file.
2009-11-15 Carlos O'Donell <carlos@codesourcery.com>
* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h:
Remove FUTEX_WAITERS, FUTEX_OWNER_DIED, and FUTEX_TID_MASK.
[BZ #10527] Provide corrected socket constants that match the
kernel values.
2009-11-15 Carlos O'Donell <carlos@codesourcery.com>
Aurelian Jarno <aurelien@aurel32.net>
[BZ #10527]
* sysdeps/unix/sysv/linux/hppa/socket.h: New file.
[BZ #10920] Use the new generic override to specify the hppa
specific libgcc_s.so.4 version number. Remove the files which
hppa no longer has to duplicate in order to accomplish
overriding libgcc_s.so version number.
2009-11-08 Carlos O'Donell <carlos@codesourcery.com>
[BZ #10920]
* sysdeps/hppa/libgcc_s.h: New file.
* sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c: Remove.
* sysdeps/unix/sysv/linux/hppa/nptl/unwind-resume.c: Remove.
Ensure that all objects in ARM EABI glibc have the proper EABI build
attributes to indicate that 8-byte stack alignment is required and
preserved. (GNU ld does not currently give errors for mixing code
requiring 8-byte alignment - such as anything built with GCC - and
code not marked as preserving it, because of the prevalence of
assembly code without proper markers to indicate that alignment is
preserved. The ARM RealView linker does give such errors.)
The bulk of the markers are accomplished by the change to sysdep.h,
but a few .S files do not include sysdep.h. In the case of
internal_accept4.S, no code is generated because EABI does not have
socketcall, but for completeness a dummy file with the right
attributes is used to override the default version in libc.
* sysdeps/arm/sysdep.h: (Tag_ABI_align8_preserved,
Tag_ABI_align8_needed): Attributes added.
* sysdeps/arm/elf/start.S: Likewise.
* sysdeps/arm/eabi/abi-note.S: New file.
* sysdeps/unix/sysv/linux/arm/eabi/internal_accept4.S: New
file.
This version of the NPTL POSIX thread ABI for hppa does
not break backwards compatibility with the the old
Linuxthreads ABI, and is therefore suitable for release
by distributions.
sysdeps/unix/sysv/linux/hppa/
* internaltypes.h: New file.
sysdeps/unix/sysv/linux/hppa/nptl/
* pthreadP.h: New file.
* pthread.h: New file.
* pthread_cond_broadcast.c: New file.
* pthread_cond_destroy.c: New file.
* pthread_cond_init.c: New file.
* pthread_cond_signal.c: New file.
* pthread_cond_timedwait.c: New file.
* pthread_cond_wait.c: New file.
* bits/pthreadtypes.h: Make pthread_mutex_t,
pthread_rwlock_t, and pthread_cond_t backwards
compatible.
* sysdeps/mips/____longjmp_chk.c: Remove. Replaced by....
* sysdeps/unix/sysv/linux/mips/____longjmp_chk.c: This. New file.
* sysdeps/mips/__longjmp.c (__longjmp): Use explicit register
variable for env. Use expansion of CHECK_SP macro for check.
* sysdeps/mips/mips64/__longjmp.c (__Longjmp): Likewise.
sysdeps/unix/sysv/linux/internal_accept4.S expects socket.S to be
present if __NR_socketcall is defined (which it is on MIPS o32, even
though there are separate syscalls as well) and __NR_accept4 isn't.
MIPS does not have socket.S, since it uses separate syscalls, but
though the accept4 syscall should be added soon present kernel headers
do not have it. This patch creates a dummy internal_accept4.S for
MIPS o32, and an accept4.c wrapper that undefines __NR_socketcall so
that the main accept4.c falls back to the ENOSYS implementation if
__NR_accept4 isn't defined; it doesn't seem worthwhile to have a
special socketcall-based assembly implementation just for o32 on a few
kernels in the range between accept4 being available via socketcall
and the accept4 syscall being available.
* sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c:
Update from nptl/sysdeps/pthread/unwind-forcedunwind.c
* sysdeps/unix/sysv/linux/hppa/nptl/unwind-resume.c:
Update from nptl/sysdeps/pthread/unwind-resume.c
* sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c
(libgcc_s_handle): New variable.
(pthread_cancel_init): Depend in libgcc_s_handle for decision to
load DSO. Assign last.
(__unwind_freeres): New function.
* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c:
Likewise.
* sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c
(libgcc_s_handle): New variable.
(pthread_cancel_init): Depend in libgcc_s_handle for decision to
load DSO. Assign last.
(__unwind_freeres): New function.
Joseph Myers <joseph@codesourcery.com>
* sysdeps/arm/dl-machine.h (elf_machine_dynamic): Ditto.
(elf_machine_load_address): Clear T bit of PLT entry contents.
(RTLD_START): Mark function symbols as such. Tweak pc-relative
addressing to avoid depending on pc read pipeline offset.
* sysdeps/arm/machine-gmon.h (MCOUNT): Add Thumb-2 implementation.
* sysdeps/arm/tls-macros.h: Add alignment for Thumb-2.
(ARM_PC_OFFSET): Define.
(TLS_IE): Define differently for Thumb-2.
(TLS_LE, TLS_LD, TLS_GD): Use ARM_PC_OFFSET.
* sysdeps/arm/elf/start.S: Switch to thumb mode for Thumb-2.
* sysdeps/unix/sysv/linux/arm/eabi/sysdep.h (INTERNAL_SYSCALL_RAW):
Add Thumb implementation.
* sysdeps/unix/sysv/linux/arm/eabi/nptl/aio_misc.h: New.
* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-resume.c: Enforce
alignment for Thumb-2. Adjust offset from PC for Thumb-2.
* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c: Ditto.
* sysdeps/unix/sysv/linux/arm/nptl/bits/atomic.h (atomic_full_barrier,
__arch_compare_and_exchange_val_32_acq): Add Thumb-2 implementation.
* sysdeps/unix/sysv/linux/mips/dl-static.c: New file to support
variable page size for MIPS.
* sysdeps/unix/sysv/linux/mips/ldsodefs.h: Likewise.
* sysdeps/unix/sysv/linux/mips/Makefile: Build dl-static in elf.
* sysdeps/unix/sysv/linux/mips/Versions: Add _dl_var_init.
* sysdeps/unix/sysv/linux/alpha/wordexp.c: Contents moved to main
repository's ia64 file; #include that.
* sysdeps/unix/sysv/linux/alpha/ipc_priv.h: Contents moved to main
repository's powerpc file; #include that.
SOCK_NONBLOCK, PF_ISDN and AF_ISDN.
* sysdeps/unix/sysv/linux/mips/sys/epoll.h: New file.
* sysdeps/unix/sysv/linux/mips/sys/eventfd.h: New file.
* sysdeps/unix/sysv/linux/mips/sys/inotify.h: New file.
* sysdeps/unix/sysv/linux/mips/sys/signalfd.h: New file.
* sysdeps/unix/sysv/linux/mips/sys/timerfd.h: New file.
* data/localplt-arm-linux-gnueabi.data: New.
* sysdeps/arm/bsd-_setjmp.S: Use HIDDEN_JUMPTARGET to call
__sigsetjmp.
* sysdeps/arm/bsd-setjmp.S: Likewise.
* sysdeps/arm/eabi/aeabi_localeconv.c: Use __localeconv.
* sysdeps/arm/eabi/find_exidx.c (__gnu_Unwind_Find_exidx): Use
__dl_iterate_phdr.
* sysdeps/arm/eabi/setjmp.S: Add hidden_def (__sigsetjmp).
* sysdeps/arm/memmove.S: Use HIDDEN_JUMPTARGET to call memcpy from
within libc.
* sysdeps/arm/setjmp.S: Add hidden_def (__sigsetjmp).
* sysdeps/unix/sysv/linux/arm/clone.S: Use HIDDEN_JUMPTARGET to
call _exit.
* sysdeps/unix/sysv/linux/arm/ioperm.c (init_iosys): Use __sysctl,
__readlink and fgets_unlocked.
(_ioperm): Use __open and __close.
* sysdeps/m68k/bits/byteswap.h: Allow inclusion from <endian.h>.
(__bswap_constant_16): Define.
(__bswap_16): Allow arguments with side effects.
(__bswap_constant_32): Ensure result is unsigned.
(__bswap_32): Define as inline function in fallback case.
(__bswap_constant_64): Define.
(__bswap_64): Use it for constant arguments.
* sysdeps/m68k/bits/setjmp.h (__jmp_buf): Give name to structure
type.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Only allow inclusion
from <math.h>. Do not use extern inline directly.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Include <bits/uio.h>.
(O_CLOEXEC, SYNC_FILE_RANGE_WAIT_BEFORE, SYNC_FILE_RANGE_WRITE,
SYNC_FILE_RANGE_WAIT_AFTER, SPLICE_F_MOVE, SPLICE_F_NONBLOCK,
SPLICE_F_MORE, SPLICE_F_GIFT): Define.
(sync_file_range, vmsplice, splice, tee): Declare.
* sysdeps/unix/sysv/linux/m68k/bits/mman.h (MADV_REMOVE): Define.
* sysdeps/unix/sysv/linux/m68k/bits/poll.h (POLLMSG, POLLREMOVE,
POLLRDHUP): Define.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h (UTIME_NOW,
UTIME_OMIT): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: New.
* sysdeps/unix/sysv/linux/m68k/sys/user.h: New.
* sysdeps/unix/sysv/linux/hppa/ucontext_i.sym: New file.
* sysdeps/unix/sysv/linux/hppa/Makefile: New file.
* sysdeps/unix/sysv/linux/hppa/getcontext.S: New file.
* sysdeps/unix/sysv/linux/hppa/makecontext.c: New file.
* sysdeps/unix/sysv/linux/hppa/setcontext.S: New file.
* sysdeps/unix/sysv/linux/hppa/swapcontext.c: New file.
Carlos O'Donell <carlos@systemhalted.org>
[BZ #6037]
* sysdeps/unix/sysv/linux/hppa/bits/atomic.h: Check for -11
(-EAGAIN) instead of 11. Loop again when the kernel
returns -45 (-EDEADLOCK). Add back memory clobber.
Do not initialize lws_ret and lws_errno.
