This feature is specifically for the C++ compiler to offload calling
thread_local object destructors on thread program exit, to glibc.
This is to overcome the possible complication of destructors of
thread_local objects getting called after the DSO in which they're
defined is unloaded by the dynamic linker. The DSO is marked as
'unloadable' if it has a constructed thread_local object and marked as
'unloadable' again when all the constructed thread_local objects
defined in it are destroyed.
There hasn't been a use for lll_unlock_wake_cb since it was
removed globally in 2007-05-29. This patch removes the
function from hppa's lowlevellock.[ch] implementation.
ARM now supports loading unmarked objects from
the dynamic loader cache. Unmarked objects can
be used with the hard-float or soft-float ABI.
We must support loading unmarked objects during
the transition period from a binutils that does
not mark objects to one that does mark them with
the correct ELF flags.
Signed-off-by: Carlos O'Donell <carlos@redhat.com>
That convention requires the instruction immediately preceding SYSCALL
to initialize $v0 with the syscall number. Then if a restart triggers,
$v0 will have been clobbered by the syscall interrupted, and needs to be
reinititalized. The kernel will decrement the PC by 4 before switching
back to the user mode so that $v0 has been reloaded before SYSCALL is
executed again. This implies the place $v0 is loaded from must be
preserved across a syscall, e.g. an immediate, static register, stack
slot, etc.
The restriction was lifted with Linux 2.6.36 kernel release and no
special requirements are placed around the SYSCALL instruction anymore,
however we still support older kernel binaries.
Previously, we would see a bad frame in the gdb backtrace output, e.g.:
(gdb) bt
#0 foo () at foo.c:5
#1 0x000000aaaab68ee8 in start_thread () from /lib/libpthread.so.0
#2 0x000000aaaad01c88 in clone () from /lib/libc.so.6
#3 0x0000000000000000 in ?? ()
With this change the bogus frame #3 is gone and we have the
same output as x86 does for the same program.
* sysdeps/unix/sysv/linux/aarch64/ldconfig.h: Add entries
for /lib/ld-linux.so.3 and /lib/ld-linux-armhf.so.3.
Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org>
Since we no longer support __ASSUME_POSIX_CPU_TIMERS, the ia64 code
no longer needs to override HAS_CPUCLOCK in the common file. Drop
the ia64 shim as well.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Use the new FLAG_AARCH64_LIB64 ldconfig cache tag for AArch64,
similarly to the way tags are handled for other architectures.
Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org>
Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
Signed-off-by: Marcus Shawcroft <marcus.shawcroft@linaro.org>
We must save and restore r19 in both PIC and non-PIC
situations since the kernel paths that clobber r19
are independent of that PIC-ness of userspace.
In addition we choose r4 as the temporary register over
r3 which is being used by recent gcc's as the frame
pointer.
* sysdeps/unix/sysv/linux/x86/bits/fcntl.h (__O_LARGEFILE)
[!__x86_64]: Do not define, take value from <bits/fcntl-linux.h>.
* sysdeps/unix/sysv/linux/s390/bits/fcntl.h (__O_LARGEFILE):
[__WORDSIZE != 64]: Likewise.
* sysdeps/unix/sysv/linux/generic/bits/fcntl.h: (__O_LARGEFILE)
[__WORDSIZE != 64]: Do not define, take value from
<bits/fcntl-linux.h>.
* sysdeps/unix/sysv/linux/hppa/bits/fcntl.h: Remove all
definitions and declarations that are provided by
<bits/fcntl-linux.h> and include <bits/fcntl-linux.h>.
(__O_PATH): Define.
* sysdeps/unix/sysv/linux/m68k/bits/fcntl.h: Remove all
definitions and declarations that are provided by
<bits/fcntl-linux.h> and include <bits/fcntl-linux.h>.
* sysdeps/unix/sysv/linux/generic/bits/fcntl.h: Remove all
definitions and declarations that are provided by
<bits/fcntl-linux.h> and include <bits/fcntl-linux.h>.
* sysdeps/unix/sysv/linux/ia64/bits/fcntl.h: Remove all
definitions and declarations that are provided by
<bits/fcntl-linux.h> and include <bits/fcntl-linux.h>.
* sysdeps/unix/sysv/linux/mips/bits/fcntl.h: Remove all
definitions and declarations that are provided by
<bits/fcntl-linux.h> and include <bits/fcntl-linux.h>.
* sysdeps/unix/sysv/linux/arm/bits/fcntl.h: Remove all
definitions and declarations that are provided by
<bits/fcntl-linux.h> and include <bits/fcntl-linux.h>.
We can discover our x,y coordinate in the core mesh with an
mfspr instruction, multiply y by the core mesh width, and have
the core number without needing to ask the kernel.
Updates the hppa-specific pthread.h from the generic version.
After this update the only difference between the generic
version and the hppa version is the footer protected by the
_PTHREAD_H_HPPA_ guard.
Fix a build failure by using __prlimit64 as the internal
function name for the versioned symbol prlimit64. Without
this patch the build system attempts to alias prlimit64
to itself and that is invalid.
The convert_bit macro allows the compiler to translate the bit
positions more efficiently. The assumption of only running at
program startup allows eliding the __ieee_get_fp_control call.
The previous dummy definition (as type int) was fine in general, since
tile doesn't have floating-point registers, but it confused gdb's
configure, leading to later compile errors. This change also makes
prfpregset_t parallel to prgregset_t, which seems like generally the
right thing regardless of the non-existence of the actual registers :-)
While most arches have had the fdatasync syscall for a long time, the
alpha port didn't add it until the 2.6.22 release.
This is heavily based on Aurelien Jarno's initial work.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
All other arches have this in their syscall list. Looks like hppa
is missing it though and breaks one or two apps that try to call it.
URL: https://bugs.gentoo.org/411745
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
