The libc version is identical and built with same flags. The libc
version is set as the default version.
The libpthread compat symbol requires to mask it when building the
loader object otherwise ld might complain about a missing
versioned symbol (as for alpha).
Checked on x86_64-linux-gnu.
The libc version is identical and built with same flags. Both aarch64
and nios2 also requires to export __send and tt was done previously with
the HAVE_INTERNAL_SEND_SYMBOL (which forced the symbol creation).
All __send callers are internal to libc and the original issue that
required the symbol export was due a missing libc_hidden_def. So
a compat symbol is added for __send and the libc_hidden_def is
defined regardless.
Checked on x86_64-linux-gnu and i686-linux-gnu.
It turns out the startup code in csu/elf-init.c has a perfect pair of
ROP gadgets (see Marco-Gisbert and Ripoll-Ripoll, "return-to-csu: A
New Method to Bypass 64-bit Linux ASLR"). These functions are not
needed in dynamically-linked binaries because DT_INIT/DT_INIT_ARRAY
are already processed by the dynamic linker. However, the dynamic
linker skipped the main program for some reason. For maximum
backwards compatibility, this is not changed, and instead, the main
map is consulted from __libc_start_main if the init function argument
is a NULL pointer.
For statically linked binaries, the old approach based on linker
symbols is still used because there is nothing else available.
A new symbol version __libc_start_main@@GLIBC_2.34 is introduced because
new binaries running on an old libc would not run their ELF
constructors, leading to difficult-to-debug issues.
Linux 5.11 has one new syscall, epoll_pwait2. Update
syscall-names.list and regenerate the arch-syscall.h headers with
build-many-glibcs.py update-syscalls.
Tested with build-many-glibcs.py.
Remove the internal_statvfs64.c and open code the implementation
on internal_statvfs.c. The alpha is now unrequired, the generic
implementation also handles it.
Also, remove unused includes on internal_statvfs.c, and remove
unused arguments on __internal_statvfs{64}.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
There is no need to handle ENOSYS on fstatfs64 call, required only
for alpha (where is already fallbacks to fstatfs).
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
There is no need to handle ENOSYS on fstatfs64 call, required only
for alpha (where is already fallbacks to fstatfs). The wordsize
internal_statvfs64.c is removed, since how the LFS support is
provided by fstatvfs64.c (used on 64-bit architectures as well).
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The __NR_statfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64. And newer ABIs also uses
the new statfs64 interface (where the struct size is used as
second argument).
So the default implementation now uses:
1. __NR_statfs64 for non-LFS call and handle overflow directly
There is no need to handle __NR_statfs since all architectures
that only support are LFS only.
2. __NR_statfs if defined or __NR_statfs64 otherwise for LFS
call.
Alpha is the only outlier, since it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_statfs64 on
newer kernels (v5.1+).
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The __NR_fstatfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64. And newer ABIs also uses
the new fstatfs64 interface (where the struct size is used as
first argument).
So the default implementation now uses:
1. __NR_fstatfs64 for non-LFS call and handle overflow directly
There is no need to handle __NR_fstatfs since all architectures
that only support are LFS only.
2. __NR_fstatfs if defined or __NR_fstatfs64 otherwise for LFS
call.
Alpha is the only outlier, it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_fstatfs64 on
newer kernels (5.1+).
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This ia regression from 09153638cf, versioned_symbol acts as
weak_alias for !SHARED but it is undefined to avoid non versioned
alias from the generic implementation.
Checked with a build for alpha-linux-gnu.
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
This is clever, but it confuses downstream detection in at least zstd
and GNOME's glib. zstd has preprocessor tests for the 'st_mtime' macro,
which is not provided by the path using the anonymous union; glib checks
for the presence of 'st_mtimensec' in struct stat but then tries to
access that field in struct statx (which might be a bug on its own).
Checked with a build for alpha-linux-gnu.
Linux 5.10 has one new syscall, process_madvise. Update
syscall-names.list and regenerate the arch-syscall.h headers with
build-many-glibcs.py update-syscalls.
Tested with build-many-glibcs.py.
It removes all the arch-specific assembly implementation. The
outliers are alpha, where its kernel ABI explict return -ENOMEM
in case of failure; and i686, where it can't use
"call *%gs:SYSINFO_OFFSET" during statup in static PIE.
Also some ABIs exports an additional ___brk_addr symbol and to
handle it an internal HAVE_INTERNAL_BRK_ADDR_SYMBOL is added.
Checked on x86_64-linux-gnu, i686-linux-gnu, adn with builsd for
the affected ABIs.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
This reverts commit 20b39d5946 to move
{f}xstat{at} back to default symbols. ABIs with default symbol version
of 2.33 or newer (such as riscv32) continue to just provide the stat
symbols.
The idea is to not force static libraries built against old glibc
to update against new glibcs (since they reference the old
{f}xstat{at} symbols).
Checked on x86_64-linux-gnu and i686-linux-gnu.
Linux 5.9 has one new syscall, close_range. Update syscall-names.list
and regenerate the arch-syscall.h headers with build-many-glibcs.py
update-syscalls.
Tested with build-many-glibcs.py.
They are no interna uses anymore. The riscv32 ABI was added on 2.33,
so it is safe to remove the old __{f,l}stat{at} symbols and just
provide the newer {f,l}stat{at} ones.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
It implements all the required syscall for the all Linux kABIS on
fstatat{64} instead of calling fxstatat{64}.
On non-LFS implementation, it handles 3 cases:
1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and
nios): it issues __NR_fstat64 plus handle the overflow on st_ino,
st_size, or st_blocks.
2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k,
microblaze, mips32, s390, sh, powerpc, and sparc32): it issues
__NR_fstatat64 and convert the result to struct stat.
3. 64-bit kABI outliers (mips64 and mips64-n32): it issues
__NR_newfstatat and convert the result to struct stat.
The generic LFS implementation handles multiple cases:
1. XSTAT_IS_XSTAT64 being 1:
1.1. 64-bit kABI (aarch64, ia64, powerpc64*, s390x, riscv64, and
x86_64): it issues __NR_newfstatat.
1.2. 64-bit kABI outlier (alpha): it issues __NR_fstatat64.
1.3. 64-bit kABI outlier where struct stat64 does not match kernel
one (sparc64): it issues __NR_fstatat64 and convert the result
to struct stat64.
1.4. 32-bit kABI with default 64-bit time_t (arc, riscv32): it
issues __NR_statx and convert the result to struct stat64.
2. Old ABIs with XSTAT_IS_XSTAT64 being 0:
2.1. All kABIs with non-LFS support (arm, csky, i386, hppa, m68k,
microblaze, nios2, sh, powerpc32, and sparc32): it issues
__NR_fstatat64.
2.2. 64-bit kABI outliers (mips64 and mips64-n32): it issues
__NR_newfstatat and convert the result to struct stat64.
It allows to remove all the hidden definitions from the {f,l}xstat{64}
(some are still kept because Hurd requires it).
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
The common definitions are moved to a Linux generic stat.h while the
struct stat{64} definition are moved to a arch-specific struct_stat.h
header.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This patch removes the mknod and mknodat static wrapper and add the
symbols on the libc with the expected names.
Both the prototypes of the internal symbol linked by the static
wrappers and the inline redirectors are also removed from the installed
sys/stat.h header file. The wrapper implementation license LGPL
exception is also removed since it is no longer statically linked to
binaries.
Internally the _STAT_VER* definitions are moved to the arch-specific
xstatver.h file.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This patch removes the stat, stat64, lstat, lstat64, fstat, fstat64,
fstatat, and fstatat64 static wrapper and add the symbol on the libc
with the expected names.
Both the prototypes of the internal symbol linked by the static
wrappers and the inline redirectors are also removed from the installed
sys/stat.h header file. The wrapper implementation license LGPL
exception is also removed since it is no longer statically linked to
binaries.
Internally the _STAT_VER* definitions are moved to a arch-specific
xstatver.h file. The internal defines that redirects internals
{f}stat{at} to their {f}xstat{at} counterparts are removed for Linux
(!NO_RTLD_HIDDEN). Hurd still requires them since {f}stat{at} pulls
extra objects that makes the loader build fail otherwise (I haven't
dig into why exactly).
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This patch adds the ABI-related bits to reflect the new mallinfo2
function, and adds a test case to verify basic functionality.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
The LFS support is implemented on fxstat64.c, instead of fxstat.c for
64-bit architectures. The fxstatat.c implements the non-LFS and it is
a no-op for !XSTAT_IS_XSTAT64.
The generic non-LFS implementation handles two cases:
1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and
nios): it issues __NR_fstatat64 plus handle the overflow on st_ino,
st_size, or st_blocks. It only handles _STAT_VER_KERNEL.
2. Old kABIs with old non-LFS support (arm, i386, hppa, m68k, mips32,
microblaze, s390, sh, powerpc, and sparc32). it issues
__NR_fstatat64 and convert to non-LFS stat struct based on the
version.
Also non-LFS mips64 is an outlier and it has its own implementation
since _STAT_VER_LINUX requires a different conversion function (it
uses the kernel_stat as the sysissues argument since its exported ABI
is different than the kernel one for both non-LFS and LFS
implementation).
The generic LFS implementation handles multiple cases:
1. XSTAT_IS_XSTAT64 being 1:
1.1. 64-bit kABI (aarch64, ia64, powerpc64*, s390x, riscv64, and
x86_64): it issues __NR_newfstatat for _STAT_VER_KERNEL or
_STAT_VER_LINUX.
1.2. 64-bit kABI outlier (sparc64): it issuess fstatat64 with a
temporary stat64 and convert to output stat64 based on the
input version (and using a sparc64 specific __xstat32_conv).
1.3. New 32-bit kABIs with only 64-bit time_t support (arc and
riscv32): it issues __NR_statx and covert to struct stat64.
2. Old ABIs with XSTAT_IS_XSTAT64 being 0 (arm, csky, i386, hppa, m68k,
microblaze, mips32, nios2, sh, powerpc32, and sparc32): it issues
__NR_fstat64.
Also, two special cases requires specific implementations:
1. alpha: it uses the __NR_fstatat64 syscall instead.
2. mips64: as for non-LFS implementation its ABIs differ from
glibc exported one, which requires an specific conversion
function to handle the kernel_stat.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
The LFS support is implemented on fxstat64.c, instead of fxstat.c for
64-bit architectures. The fxstat.c implements the non-LFS and it is
a no-op for !XSTAT_IS_XSTAT64.
The generic non-LFS implementation handles two cases:
1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and
nios): it issuess __NR_fstat64 plus handle the overflow on st_ino,
st_size, or st_blocks. It only handles _STAT_VER_KERNEL.
2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k,
microblaze, s390, sh, powerpc, and sparc32). For _STAT_VER_KERNEL
it issues __NR_fstat, otherwise it calls __NR_fstat64 and convert
to non-LFS stat struct and handle possible overflows on st_ino,
st_size, or st_blocks.
Also non-LFS mips is an outlier and it has its own implementation since
_STAT_VER_LINUX requires a different conversion function (it uses the
kernel_stat as the sysissues argument since its exported ABI is
different than the kernel one for both non-LFS and LFS implementation).
The generic LFS implementation handles multiple cases:
1. XSTAT_IS_XSTAT64 being 1:
1.1. 64-bit kABI (aarch64, ia64, powerpc64*, s390x, riscv64, and
x86_64): it issuess __NR_fstat for _STAT_VER_KERNEL or
_STAT_VER_LINUX.
1.2. Old 64-bit kABI with defines __NR_fstat64 instead of __NR_fstat
(sparc64): it issues __NR_fstat for _STAT_VER_KERNEL or
__NR_fstat64 and convert to struct stat64.
1.3. New 32-bit kABIs with only 64-bit time_t support (arc and
riscv32): it issuess __NR_statx and covert to struct stat64.
2. Old ABIs with XSTAT_IS_XSTAT64 being 0 (arm, csky, i386, hppa,
m68k, microblaze, mips32, nios2, sh, powerpc32, and sparc32): it
issues __NR_fstat64.
Also, two special cases requires specific implementations:
1. alpha: it requires to handle _STAT_VER_KERNEL64 to issues
__NR_fstat64 and use the kernel_stat with __NR_fstat otherwise.
2. mips64: as for non-LFS implementation its ABIs differ from
glibc exported one, which requires an specific conversion
function to handle the kernel_stat.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
The LFS support is implemented on lxstat64.c, instead of lxstat.c for
64-bit architectures. The xstat.c implements the non-LFS and it is
a no-op for !XSTAT_IS_XSTAT64.
The generic non-LFS implementation handles two cases:
1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and
nios): it issues __NR_fstat64 with AT_SYMLINK_NOFOLLOW plus handles
the possible overflow off st_ino, st_size, or st_blocks. It only
handles _STAT_VER_KERNEL.
2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k,
microblaze, s390, sh, powerpc, and sparc32). For _STAT_VER_KERNEL
it issues __NR_lstat, otherwise it isseus __NR_lstat64 and convert
to non-LFS stat struct and handle possible overflows on st_ino,
st_size, or st_blocks.
Also non-LFS mips is an outlier and it has its own implementation since
_STAT_VER_LINUX requires a different conversion function (it uses the
kernel_stat as the syscall argument since its exported ABI is different
than the kernel one for both non-LFS and LFS implementation).
The generic LFS implementation handles multiple cases:
1. XSTAT_IS_XSTAT64 being 1:
1.1. Old 64-bit kABI (ia64, powerpc64*, s390x, sparc64, x86_64): it
issues __NR_lstat for _STAT_VER_KERNEL or _STAT_VER_LINUX.
1.2. Old 64-bit kABI with defines __NR_lstat64 instead of __NR_lstat
(sparc64): it issues __NR_lstat for _STAT_VER_KERNEL or
__NR_lstat64 and convert to struct stat64.
1.3. New kABIs which uses generic 64-bit Linux ABI (aarch64 and
riscv64): it issues __NR_newfstatat with AT_SYMLINK_NOFOLLOW
and only for _STAT_VER_KERNEL.
1.4. New 32-bit kABIs with only 64-bit time_t support (arc and
riscv32): it issues __NR_statx and covert to struct stat64.
2. Old ABIs with XSTAT_IS_XSTAT64 being 0:
2.1. New kABIs which uses generic pre 64-bit time Linux ABI (csky
and nios2): it issues __NR_fstatat64 for _STAT_VER_KERNEL.
2.2. Old kABIs with old non-LFS support (arm, i386, hppa, m68k,
microblaze, s390, sh, mips32, powerpc32, and sparc32): it
issues __NR_lstat64.
Also, two special cases requires specific LFS implementations:
1. alpha: it requires to handle _STAT_VER_KERNEL64 to issue
__NR_lstat64 and use the kernel_stat with __NR_lstat otherwise.
2. mips64: as for non-LFS implementation its ABIs differ from
glibc exported one, which requires a specific conversion
function to handle the kernel_stat.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
The LFS support is implemented on xstat64.c, instead of xstat.c for
64-bit architectures. The xstat.c implements the non-LFS it is
no-op for !XSTAT_IS_XSTAT64.
The generic non-LFS implementation handle two cases:
1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and
nios): it issues __NR_fstat64 plus handle the overflow on st_ino,
st_size, or st_blocks. It only handles _STAT_VER_KERNEL.
2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k,
microblaze, s390, sh, powerpc, and sparc32). For _STAT_VER_KERNEL
it issues __NR_stat, otherwise it issues __NR_stat64 and convert
to non-LFS stat struct handling possible overflows on st_ino,
st_size, or st_blocks.
Also the non-LFS mips is an outlier and it has its own implementation
since _STAT_VER_LINUX requires a different conversion function (it uses
the kernel_stat as the syscall argument since its exported ABI is
different than the kernel one for both non-LFS and LFS implementation).
The generic LFS implementation handles multiple cases:
1. XSTAT_IS_XSTAT64 being 1:
1.1. Old 64-bit kABI (ia64, powerpc64*, s390x, x86_64): it
issues __NR_stat for _STAT_VER_KERNEL or _STAT_VER_LINUX.
1.2. Old 64-bit kABI with defines __NR_stat64 instead of __NR_stat
(sparc64): it issues __NR_stat for _STAT_VER_KERNEL or
__NR_stat64 and convert to struct stat64.
1.3. New kABIs which uses generic 64-bit Linux ABI (aarch64 and
riscv64): it issues __NR_newfstatat and only for
_STAT_VER_KERNEL.
1.4. New 32-bit kABIs with only 64-bit time_t support (arc and
riscv32): it issues __NR_statx and covert to struct stat64.
2. Old ABIs with XSTAT_IS_XSTAT64 being 0:
2.1. New kABIs which uses generic pre 64-bit time Linux ABI (csky
and nios2): it issues __NR_fstatat64 for _STAT_VER_KERNEL.
2.2. Old kABIs with old non-LFS support (arm, i386, hppa, m68k,
microblaze, s390, sh, mips32, powerpc32, and sparc32): it
issues __NR_stat64.
Also, two special cases requires specific LFS implementations:
1. alpha: it requires to handle _STAT_VER_KERNEL64 to call __NR_stat64
or use the kernel_stat with __NR_stat otherwise.
2. mips64: as for non-LFS implementation its ABIs differ from glibc
exported one, which requires an specific conversion function to
handle the kernel_stat.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
It indicates that the glibc export stat64 is similar in size and
layout of the kernel stat64 used on the syscall. It is not currently
used on stat implementation, but the idea is to indicate whether
to use the kernel_stat to issue on the syscall on the *stat*64
variant (more specifically on mips which its exported ABI does not
match the kernel).
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Linux 5.8 has one new syscall, faccessat2. Update syscall-names.list
and regenerate the arch-syscall.h headers with build-many-glibcs.py
update-syscalls.
Tested with build-many-glibcs.py.
The kernel ABI is not finalized, and there are now various proposals
to change the size of struct rseq, which would make the glibc ABI
dependent on the version of the kernels used for building glibc.
This is of course not acceptable.
This reverts commit 48699da1c4 ("elf:
Support at least 32-byte alignment in static dlopen"), commit
8f4632deb3 ("Linux: rseq registration
tests"), commit 6e29cb3f61 ("Linux: Use
rseq in sched_getcpu if available"), and commit
0c76fc3c2b ("Linux: Perform rseq
registration at C startup and thread creation"), resolving the conflicts
introduced by the ARC port and the TLS static surplus changes.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The strerrorname_np returns error number name (e.g. "EINVAL" for EINVAL)
while strerrordesc_np returns string describing error number (e.g
"Invalid argument" for EINVAL). Different than strerror,
strerrordesc_np does not attempt to translate the return description,
both functions return NULL for an invalid error number.
They should be used instead of sys_errlist and sys_nerr, both are
thread and async-signal safe. These functions are GNU extensions.
Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
and s390x-linux-gnu.
Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The sigabbrev_np returns the abbreviated signal name (e.g. "HUP" for
SIGHUP) while sigdescr_np returns the string describing the error
number (e.g "Hangup" for SIGHUP). Different than strsignal,
sigdescr_np does not attempt to translate the return description and
both functions return NULL for an invalid signal number.
They should be used instead of sys_siglist or sys_sigabbrev and they
are both thread and async-signal safe. They are added as GNU
extensions on string.h header (same as strsignal).
Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
and s390x-linux-gnu.
Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The symbol is deprecated by strerror since its usage imposes some issues
such as copy relocations.
Its internal name is also changed to _sys_errlist_internal to avoid
static linking usage. The compat code is also refactored by removing
the over enginered errlist-compat.c generation from manual entried and
extra comment token in linker script file. It disantangle the code
generation from manual and simplify both Linux and Hurd compat code.
The definitions from errlist.c are moved to errlist.h and a new test
is added to avoid a new errno entry without an associated one in manual.
Checked on x86_64-linux-gnu and i686-linux-gnu. I also run a check-abi
on all affected platforms.
Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
It refactor how signals are defined by each architecture. Instead of
include a generic header (bits/signum-generic.h) and undef non-default
values in an arch specific header (bits/signum.h) the new scheme uses a
common definition (bits/signum-generic.h) and each architectures add
its specific definitions on a new header (bits/signum-arch.h).
For Linux it requires copy some system default definitions to alpha,
hppa, and sparc. They are historical values and newer ports uses
the generic Linux signum-arch.h.
For Hurd the BSD signum is removed and moved to a new header (it is
used currently only on Hurd).
Checked on a build against all affected ABIs.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
The variable is placed in libc.so, and it can be true only in
an outer libc, not libcs loaded via dlmopen or static dlopen.
Since thread creation from inner namespaces does not work,
pthread_create can update __libc_single_threaded directly.
Using __libc_early_init and its initial flag, implementation of this
variable is very straightforward. A future version may reset the flag
during fork (but not in an inner namespace), or after joining all
threads except one.
Reviewed-by: DJ Delorie <dj@redhat.com>
Register rseq TLS for each thread (including main), and unregister for
each thread (excluding main). "rseq" stands for Restartable Sequences.
See the rseq(2) man page proposed here:
https://lkml.org/lkml/2018/9/19/647
Those are based on glibc master branch commit 3ee1e0ec5c.
The rseq system call was merged into Linux 4.18.
The TLS_STATIC_SURPLUS define is increased to leave additional room for
dlopen'd initial-exec TLS, which keeps elf/tst-auditmany working.
The increase (76 bytes) is larger than 32 bytes because it has not been
increased in quite a while. The cost in terms of additional TLS storage
is quite significant, but it will also obscure some initial-exec-related
dlopen failures.
This patch changes the exp10f error handling semantics to only set
errno according to POSIX rules. New symbol version is introduced at
GLIBC_2.32. The old wrappers are kept for compat symbols.
There are some outliers that need special handling:
- ia64 provides an optimized implementation of exp10f that uses ia64
specific routines to set SVID compatibility. The new symbol version
is aliased to the exp10f one.
- m68k also provides an optimized implementation, and the new version
uses it instead of the sysdeps/ieee754/flt32 one.
- riscv and csky uses the generic template implementation that
does not provide SVID support. For both cases a new exp10f
version is not added, but rather the symbols version of the
generic sysdeps/ieee754/flt32 is adjusted instead.
Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
powerpc64le-linux-gnu.
This is part of the libpthread removal project:
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>
Use __getline instead of __getdelim to avoid a localplt failure.
Likewise for __getrlimit/getrlimit.
The abilist updates were performed by:
git ls-files 'sysdeps/unix/sysv/linux/**/libc.abilist' \
| while read x ; do
echo "GLIBC_2.32 pthread_getattr_np F" >> $x
done
python3 scripts/move-symbol-to-libc.py --only-linux pthread_getattr_np
The private export of __pthread_getaffinity_np is no longer needed, but
the hidden alias still necessary so that the symbol can be exported with
versioned_symbol.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This is part of the libpthread removal project:
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>
The abilist updates were performed by:
git ls-files 'sysdeps/unix/sysv/linux/**/libc.abilist' \
| while read x ; do
echo "GLIBC_2.32 pthread_getaffinity_np F" >> $x
done
python3 scripts/move-symbol-to-libc.py pthread_getaffinity_np
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This is part of the libpthread removal project:
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>
The symbol did not previously exist in libc, so a new GLIBC_2.32
symbol is needed, to get correct dependency for binaries which
use the symbol but no longer link against libpthread.
The abilist updates were performed by:
git ls-files 'sysdeps/unix/sysv/linux/**/libc.abilist' \
| while read x ; do
echo "GLIBC_2.32 pthread_attr_setaffinity_np F" >> $x
done
python3 scripts/move-symbol-to-libc.py pthread_attr_setaffinity_np
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
The __clock_gettime internal function is not supporting 64 bit time on
architectures with __WORDSIZE == 32 and __TIMESIZE != 64 (like e.g. ARM 32
bit).
The __clock_gettime64 function shall be used instead in the glibc itself as
it supports 64 bit time on those systems.
This patch does not bring any changes to systems with __WORDSIZE == 64 as
for them the __clock_gettime64 is aliased to __clock_gettime (in
./include/time.h).
This consolidates the copy-pasted arch specific semaphore header into
single version (based on s390) which suffices 32-bit and and 64-bit
arch/ABI based on the canonical WORDSIZE.
For now I've left out arches which use alternate defines to choose for
32 vs 64-bit builds (aarch64, mips) which in theory can also use the same
header.
Passes build-many for
aarch64-linux-gnu arm-linux-gnueabi arm-linux-gnueabihf
riscv64-linux-gnu-rv64imac-lp64 riscv64-linux-gnu-rv64imafdc-lp64
x86_64-linux-gnu microblaze-linux-gnu nios2-linux-gnu
Suggested-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This is part of the libpthread removal project:
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>
A new symbol version is added on libc to force loading failure
instead of lazy binding one for newly binaries with old loaders.
Checked with a build against all affected ABIs.
Linux 5.6 has new openat2 and pidfd_getfd syscalls. This patch adds
them to syscall-names.list and regenerates the arch-syscall.h files.
Tested with build-many-glibcs.py.
Now there is a generic __timeval32 and helpers we can use them for Alpha
instead of the Alpha specific ones.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
On y2038 safe 32-bit systems the Linux kernel expects itimerval
and rusage to use a 32-bit time_t, even though the other time_t's
are 64-bit. There are currently no plans to make 64-bit time_t versions
of these structs.
There are also other occurrences where the time passed to the kernel via
timeval doesn't match the wordsize.
To handle these cases let's define a new macro
__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64. This macro specifies if the
kernel's old_timeval matches the new timeval64. This should be 1 for
64-bit architectures except for Alpha's osf syscalls. The define should
be 0 for 32-bit architectures and Alpha's osf syscalls.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
These functions are alpha specifc, rename them to be clear.
Let's also rename the header file from tv32-compat.h to
alpha-tv32-compat.h. This is to avoid conflicts with the one we will
introduce later.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
It is necessary to export __pthread_cond_init from libc because
the C11 condition variable needs it and is still left in libpthread.
This is part of the libpthread removal project:
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
It is necessary to export __pthread_cond_destroy from libc because
the C11 condition variable needs it and is still left in libpthread.
This is part of the libpthread removal project:
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Exporting functions and relying on symbol interposition from libc.so
makes the choice of implementation dependent on DT_NEEDED order, which
is not what some compiler drivers expect.
This commit replaces one magic mechanism (symbol interposition) with
another one (preprocessor-/compiler-based redirection). This makes
the hand-over from the minimal malloc to the full malloc more
explicit.
Removing the ABI symbols is backwards-compatible because libc.so is
always in scope, and the dynamic loader will find the malloc-related
symbols there since commit f0b2132b35
("ld.so: Support moving versioned symbols between sonames
[BZ #24741]").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
With all Linux ABIs using the expected Linux kABI to indicate
syscalls errors, the INTERNAL_SYSCALL_DECL is an empty declaration
on all ports.
This patch removes the 'err' argument on INTERNAL_SYSCALL* macro
and remove the INTERNAL_SYSCALL_DECL usage.
Checked with a build against all affected ABIs.
With all Linux ABIs using the expected Linux kABI to indicate
syscalls errors, there is no need to replicate the INLINE_SYSCALL.
The generic Linux sysdep.h includes errno.h even for !__ASSEMBLER__,
which is ok now and it allows cleanup some archaic code that assume
otherwise.
Checked with a build against all affected ABIs.
It highly unlikely that alpha will be ported to anything else than
Linux, so this patch moves the generic unix syscall definition to
Linux and adapt it to Linux kernel ABI.
It changes the internal_syscall* macros to return a negative value
instead of the '$19' register value on the 'err' macro argument.
The macro INTERNAL_SYSCALL_DECL is no longer required, and the
INTERNAL_SYSCALL_ERROR_P macro follows the other Linux kABIs.
Checked on alpha-linux-gnu.
A non-ascii character in the installed headers leads now to:
error: failure to convert ascii to UTF-8
Such a finding in s390 specific fenv.h leads to fails in GCC testsuite.
See glibc commit 08aea89ef6.
Adding this gcc option also to our tests was proposed by Florian Weimer.
This change also found a hit in resource.h where now "microseconds" is used.
I've adjusted all the resource.h files.
I've used the following command to check for further hits in headers.
LC_ALL=C find -name "*.h" -exec grep -PHn "[\x80-\xFF]" {} \;
Tested on s390x and x86_64.
Reviewed-by: Zack Weinberg <zackw@panix.com>
By undef strong_alias on alpha implementation, the
default_symbol_version macro becomes an empty macro on static build.
It fixes the issue introduced at c953219420.
Checked on alpha-linux-gnu with a 'make check run-built-tests=no'.
It makes alpha no longer reports information about a system-wide
time zone and moves the version logic on the alpha implementation.
Checked on a build and check-abi for alpha-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
The name 'valid_timeval64_to_timeval' suggest conversion of struct
__timeval64 to struct timeval (as in ./include/time.h).
As on the alpha the struct timeval supports 64 bit time, it seems more
feasible to emphasis struct timeval32 in the conversion function name.
Hence the helper function naming change to 'valid_timeval_to_timeval32'.
Build tests:
./src/scripts/build-many-glibcs.py glibcs
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Without this patch the naming convention for functions to convert
struct timeval32 to struct timeval (which supports 64 bit time on Alpha) was
a bit misleading. The name 'valid_timeval_to_timeval64' suggest conversion
of struct timeval to struct __timeval64 (as in ./include/time.h).
As on alpha the struct timeval supports 64 bit time it seems more readable
to emphasis struct timeval32 in the conversion function name.
Hence the helper function naming change to 'valid_timeval32_to_timeval'.
Build tests:
./src/scripts/build-many-glibcs.py glibcs
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
The __suseconds64_t type is supposed to be the 64 bit type across all
architectures.
It would be mostly used internally in the glibc - however, when passed to
Linux kernel (very unlikely), if necessary, it shall be converted to 32
bit type (i.e. __suseconds_t)
Build tests:
./src/scripts/build-many-glibcs.py glibcs
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Since the switch away from auto-generated wrappers for these system
calls, the kludge is already included in the C source file of the
system call wrapper.
Use <arch-syscall.h> instead of <asm/unistd.h> to obtain the system
call numbers. A few direct includes of <asm/unistd.h> need to be
removed (if the system call numbers are already provided indirectly
by <sysdep.h>) or replaced with <sys/syscall.h>.
Current Linux headers for alpha define the required system call names,
so most of the _NR_* hacks are no longer needed. For the 32-bit arm
architecture, eliminate the INTERNAL_SYSCALL_ARM macro, now that we
have regular system call names for cacheflush and set_tls. There are
more such cleanup opportunities for other architectures, but these
cleanups are required to avoid macro redefinition errors during the
build.
For ia64, it is desirable to use <asm/break.h> directly to obtain
the break number for system calls (which is not a system call number
itself). This requires replacing __BREAK_SYSCALL with
__IA64_BREAK_SYSCALL because the former is defined as an alias in
<asm/unistd.h>, but not in <asm/break.h>.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
The new tables are currently only used for consistency checks
with the installed kernel headers and the architecture-independent
system call names table. They are based on Linux 5.4.
The goal is to use these architecture-specific tables to ensure
that system call wrappers are available irrespective of the version
of the installed kernel headers.
The tables are formatted in the form of C header files so that they
can be used directly in an #include directive, without external
preprocessing. (External preprocessing of a plain table file
would introduce cross-subdirectory dependency issues.) However,
the intent is that they can still be treated as tables and can be
processed by simple tools.
The irregular system call names on 32-bit arm add a complication.
The <fixup-asm-unistd.h> header is introduced to work around that,
and the system calls are listed under regular names in the
<arch-syscall.h> file.
A make target, update-syscalls-list, is added to patch the glibc
sources with data from the current kernel headers.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
All architectures now uses the Linux generic implementation which
uses __NR_rt_sigprocmask.
Checked on x86_64-linux-gnu, sparc64-linux-gnu, ia64-linux-gnu,
s390x-linux-gnu, and alpha-linux-gnu.
This patch adds the missing __libpthread_version_placeholder for
GLIBC_2.2.6 version from the nanosleep implementation move from
libpthread to libc (79a547b162).
It also fixes the wrong compat symbol definitions added by changing
back the version used on vfork check and remove the
__libpthread_version_placeholder added on some ABI (4f4bb489e0).
The __libpthread_version_placeholder is also refactored to make it
simpler to add new compat_symbols by adding a new macro
compat_symbol_unique which uses the compiler extension __COUNTER__
to generate unique strong alias to be used with compat_symbol.
Checked with a updated-abi on the all affected abis of the nanosleep
move.
Change-Id: I347a4dbdc931bb42b359456932dd1e17aa4d4078
Checked on x86_64-linux-gnu and powerpc64le-linux-gnu. I also checked
the libpthread.so .gnu.version_d entries for every ABI affected and
all of them contains the required versions (including for architectures
which exports __nanosleep with a different version).
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Introduce pthread_clockjoin_np as a version of pthread_timedjoin_np that
accepts a clockid_t parameter to indicate which clock the timeout should be
measured against. This mirrors the recently-added POSIX-proposed "clock"
wait functions.
Checked on x86_64-linux-gnu.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Consolidate generic gettimeofday implementation to use clock_gettime.
Linux ports that still provide gettimeofday through vDSO are not
changed.
Remove sysdeps/unix/clock_gettime.c, which implemented clock_gettime
using gettimeofday; new OS ports must provide a real implementation of
clock_gettime.
Rename sysdeps/mach/gettimeofday.c to sysdeps/mach/clock_gettime.c and
convert into an implementation of clock_gettime. It only supports
CLOCK_REALTIME; Mach does not appear to have any support for monotonic
clocks. It uses __host_get_time, which provides at best microsecond
resolution. Hurd is currently using sysdeps/posix/clock_getres.c for
clock_getres; its output for CLOCK_REALTIME is based on
sysconf (_SC_CLK_TCK), and I do not know whether that gives the
correct result.
Unlike settimeofday, there are no known uses of gettimeofday's
vestigial "get time zone" feature that are not bugs. (The per-process
timezone support in localtime and friends is unrelated, and the
programs that set the kernel's offset between the hardware clock and
UTC do not need to read it back.) Therefore, this feature is dummied
out. Henceforth, if gettimeofday's "struct timezone" argument is not
NULL, it will write zeroes to both fields. Any program that is
actually looking at this data will thus think it is running in UTC,
which is probably more correct than whatever it was doing before.
[__]gettimeofday no longer has any internal callers, so we can now
remove its internal prototype and PLT bypass aliases. The
__gettimeofday@GLIBC_2.0 export remains, in case it is used by any
third-party code.
It also allows to simplify the arch-specific implementation on x86 and
powerpc to remove the hack to disable the internal route to non iFUNC
variant for internal symbol.
This patch also fixes a missing optimization on aarch64, powerpc, and
x86 where the code used on static build do not use the vDSO.
Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu.
Co-authored-by: Zack Weinberg <zackw@panix.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Unconditionally, on all ports, use clock_settime to implement
settimeofday. Remove sysdeps/unix/clock_settime.c, which implemented
clock_settime by calling settimeofday; new OS ports must henceforth
provide a real implementation of clock_settime.
Hurd had a real implementation of settimeofday but not of
clock_settime; this patch converts it into an implementation of
clock_settime. It only supports CLOCK_REALTIME and microsecond
resolution; Hurd/Mach does not appear to have any support for
finer-resolution clocks.
The vestigial "set time zone" feature of settimeofday complicates the
generic settimeofday implementation a little. The only remaining uses
of this feature that aren't just bugs, are using it to inform the
Linux kernel of the offset between the hardware clock and UTC, on
systems where the hardware clock doesn't run in UTC (usually because
of dual-booting with Windows). There currently isn't any other way to
do this. However, the callers that do this call settimeofday with
_only_ the timezone argument non-NULL. Therefore, glibc's new
behavior is: callers of settimeofday must supply one and only one of
the two arguments. If both arguments are non-NULL, or both arguments
are NULL, the call fails and sets errno to EINVAL.
When only the timeval argument is supplied, settimeofday calls
__clock_settime(CLOCK_REALTIME), same as stime.
When only the timezone argument is supplied, settimeofday calls a new
internal function called __settimezone. On Linux, only, this function
will pass the timezone structure to the settimeofday system call. On
all other operating systems, and on Linux architectures that don't
define __NR_settimeofday, __settimezone is a stub that always sets
errno to ENOSYS and returns -1.
The settimeoday syscall is enabled on Linux by the flag
COMPAT_32BIT_TIME, which is an option to either 32-bits ABIs or COMPAT
builds (defined usually by 64-bit kernels that want to support 32-bit
ABIs, such as x86). The idea to future 64-bit time_t only ABIs
is to not provide settimeofday syscall.
The same semantics are implemented for Linux/Alpha's GLIBC_2.0 compat
symbol for settimeofday.
There are no longer any internal callers of __settimeofday, so the
internal prototype is removed.
Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Linux/Alpha has two versions of several system call wrappers that take
or return data of type "struct timeval" (possibly nested inside a
larger structure). The GLIBC_2.0 version is a compat symbol that
calls __NR_osf_foo or __NR_old_foo and uses a struct timeval with a
32-bit tv_sec field. The GLIBC_2.1 version is used for current code,
calls __NR_foo, and uses a struct timeval with a 64-bit tv_sec field.
This patch changes all of the compat symbols of this type to be
wrappers around their GLIBC_2.1 counterparts; the compatibility system
calls will no longer be used. It serves as a proposal for part of how
we do the transition to 64-bit time_t on systems that currently use
32-bit time_t:
* The patched glibc will NOT use system calls that involve 32-bit
time_t to implement its compatibility symbols. This will make both
our lives and the kernel maintainers' lives easier. The primary
argument I've seen against it is that the kernel could warn about
uses of the old system calls, helping people find old binaries that
need to be recompiled. I think there are several other ways we
could accomplish this, e.g. scripts to scan the filesystem for
binaries with references to the old symbol versions, or issuing
diagnostics ourselves.
* The compat symbols do NOT report failure after the Y2038 deadline.
An earlier revision of this patch had them return -1 and set errno
to EOVERFLOW, but Adhemerval pointed out that many of them have
already performed side effects at the point where we discover the
overflow, so that would break more than it fixes. Also, we don't
want people to be _checking_ for EOVERFLOW from these functions; we
want them to recompile with 64-bit time_t. So it's not actually
useful for them to report failure to the calling code.
* What they do do, when they encounter overflow, is saturate the
overflowed "struct timeval"(s): tv_sec is set to INT32_MAX and
tv_nsec is set to 999999. That means time stops advancing for
programs with 32-bit time_t when they reach the deadline. That's
obviously going to break stuff, but I think wrapping around is
probably going to break _more_ stuff. I'd be interested to hear
arguments against, if anyone has one.
The new header file tv32-compat.h is currently Alpha-specific but I
mean for it to be reused to aid in writing wrappers for all affected
architectures. I only put it in sysdeps/unix/sysv/linux/alpha for now
because I haven't checked whether the various "foo32" structures it
defines agree with the ABI for ports other than Linux/Alpha.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Add a new macro __STATFS_MATCHES_STATFS64 that specifies if fsblkcnt_t
matches fsblkcnt64_t and if fsfilcnt_t matches fsfilcnt64_t.
As we don't have the padding we also need to update the overflow checker
to not access the undefined members.
This patch refactor the internal sysvipc in two main points:
1. Add a new __ASSUME_SYSVIPC_DEFAULT_IPC_64 to infer the __IPC_64
value to be used along either the multiplexed __NR_ipc or wired-up
syscall. The defaut value assumed for __IPC_64 is also changed
from 0x100 to 0x0, aligning with Linux generic UAPI. The idea
is to simplify the Linux 5.1 wire-up for sysvipc syscalls for
some 32-bit ABIs (which expectes __IPC_64 being 0x0) and simplify
new ports (which will no longer need to add ipc_priv.h).
2. It also removes some duplicated internal definition used on compat
sysvipc symbols defined at ipc_priv.h (more specifically the
__old_ipc_perm, SEMCTL_ARG_ADDRESS, MSGRCV_ARGS, and
SEMTIMEDOP_IPC_ARGS). The idea is also to make it simpler to enable
the new wire-up sysvipc syscall provided by Linux v5.1.
There is no semantic change expected on any port. Checked with a build
against all affected ABIs.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
This patch sets the mode field in ipc_perm as mode_t for all architectures,
as POSIX specification [1]. The changes required are as follow:
1. It moves the ipc_perm definition out of ipc.h to its own header
ipc_perm.h. It also allows consolidate the IPC_* definition on
only one header.
2. The generic implementation follow the kernel ipc64_perm size so the
syscall can be made directly without temporary buffer copy. However,
since glibc defines the MODE field as mode_t, it omits the __PAD1 field
(since glibc does not export mode_t as 16-bit for any architecture).
It is a two-fold improvement:
2.1. New implementation which follow Linux UAPI will not need to
provide an arch-specific ipc-perm.h header neither wrongly
use the wrong 16-bit definition from previous default ipc.h
(as csky did).
2.1. It allows consolidate ipc_perm definition for architectures that
already provide mode_t as 32-bit.
3. All kernel ABIs for the supported architectures already provides the
expected padding for mode type extension to 32-bit. However, some
architectures the padding has the wrong placement, so it requires
the ipc control routines (msgctl, semctl, and shmctl) to adjust the
mode field accordingly. Currently they are armeb, microblaze, m68k,
s390, and sheb.
A new assume is added, __ASSUME_SYSVIPC_BROKEN_MODE_T, which the
required ABIs define.
4. For the ABIs that define __ASSUME_SYSVIPC_BROKEN_MODE_T, it also
require compat symbols that do not adjust the mode field.
Checked on arm-linux-gnueabihf, aarch64-linux-gnu, powerpc64le-linux-gnu,
and x86_64-linux-gnu. I also checked the sysvipc tests on hppa-linux-gnu,
sh4-linux-gnu, s390x-linux-gnu, and s390-linux-gnu.
I also did a sanity test against armeb qemu usermode for the sysvipc
tests.
[BZ #18231]
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
bits/ipc-perm.h.
* sysdeps/unix/sysv/linux/aarch64/bits/ipc.h: Remove file.
* sysdeps/unix/sysv/linux/alpha/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/ipc.h: Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__BYTE_ORDER == __BIG_ENDIAN] (__ASSUME_SYSVIPC_BROKEN_MODE_T):
Define.
* sysdeps/sysv/linux/microblaze/kernel-features.h: Likewise.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
[!__s390x__] (__ASSUME_SYSVIPC_BROKEN_MODE_T): Define.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_SYSVIPC_BROKEN_MODE_T): Define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h: Likewise.
* sysdeps/unix/sysv/linux/bits/ipc-perm.h: New file.
* sysdeps/unix/sysv/linux/powerpc/bits/ipc-perm.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/ipc-perm.h: Likewise.
* sysdeps/unix/sysv/linux/bits/ipc.h (ipc_perm): Move to
bits/ipc-perm.h.
* sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h: New file.
* sysdeps/unix/sysv/linux/kernel-features.h: Add comment about
__ASSUME_SYSVIPC_BROKEN_MODE_T semantic.
* sysdeps/unix/sysv/linux/msgctl.c (DEFAULT_VERSION): Define as
2.31 if __ASSUME_SYSVIPC_BROKEN_MODE_T is defined.
(msgctl_syscall, __msgctl_mode16): New symbol.
(__new_msgctl): Add bits for __ASSUME_SYSVIPC_BROKEN_MODE_T.
* sysdeps/unix/sysv/linux/semctl.c: Likewise.
* sysdeps/unix/sysv/linux/shmctl.c: Likewise.
* sysdeps/unix/sysv/linux/arm/be/libc.abilist (GLIBC_2.31): Add
msgctl, semctl, and shmctl.
* sysdeps/sysv/linux/microblaze/be/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/be/libc.abilist: Likewise.
* conform/data/sys/ipc.h-data: Only xfail {struct ipc_perm} mode_t
mode for Hurd.
* sysdeps/unix/sysv/linux/m68k/Versions (libc) [GLIBC_2.31]: Add
msgctl, semctl, and shmctl.
* sysdeps/unix/sysv/linux/arm/be/Versions: New file.
* sysdeps/unix/sysv/linux/microblaze/be/Versions: Likewise.
* sysdeps/unix/sysv/linux/sh/be/Versions: Likewise.
[1] http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_ipc.h.html
On alpha, Linux kernel 5.1 added the standard getegid, geteuid and
getppid syscalls (commit ecf7e0a4ad15287). Up to now alpha was using
the corresponding OSF1 syscalls through:
- sysdeps/unix/alpha/getegid.S
- sysdeps/unix/alpha/geteuid.S
- sysdeps/unix/alpha/getppid.S
When building against kernel headers >= 5.1, the glibc now use the new
syscalls through sysdeps/unix/sysv/linux/syscalls.list. When it is then
used with an older kernel, the corresponding 3 functions fail.
A quick fix is to move the OSF1 wrappers under the
sysdeps/unix/sysv/linux/alpha directory so they override the standard
linux ones. A better fix would be to try the new syscalls and fallback
to the old OSF1 in case the new ones fail. This can be implemented in
a later commit.
Changelog:
[BZ #24986]
* sysdeps/unix/alpha/getegid.S: Move to ...
* sysdeps/unix/sysv/linux/alpha/getegid.S: ... here.
* sysdeps/unix/alpha/geteuid.S: Move to ...
* sysdeps/unix/sysv/linux/alpha/geteuid.S: ... here.
* sysdeps/unix/alpha/getppid.S: Move to ...
* sysdeps/unix/sysv/linux/alpha/getppid.S: ... here
In glibc 2.17, the functions clock_getcpuclockid, clock_getres,
clock_gettime, clock_nanosleep, and clock_settime were moved from
librt.so to libc.so, leaving compatibility stubs behind. Now that the
dynamic linker no longer insists on finding versioned symbols in the
same library that originally defined them, we do not need the stubs
anymore, and this means we don't need GLIBC_PRIVATE __-prefix aliases
for most of the functions anymore either. (clock_gettime still needs
one.) For ports added before 2.17, libc.so needs to provide two
symbol versions for each, the default at GLIBC_2.17 plus a compat
version matching what librt had.
While I'm at it, move the clock_*.c files and their tests from rt/ to
time/.
This patch refactor sigcontextinfo.h header to use SA_SIGINFO as default
for both gmon and debug implementations. This allows simplify
profil-counter.h on Linux to use a single implementation and remove the
requirements for newer ports to redefine __sigaction/sigaction to use
SA_SIGINFO.
The GET_PC macro is also replaced with a function sigcontext_get_pc that
returns an uintptr_t instead of a void pointer. It allows easier convertion
to integer on ILP32 architecture, such as x32, without the need to suppress
compiler warnings.
The patch also requires some refactor of register-dump.h file for some
architectures (to reflect it is now called from a sa_sigaction instead of
sa_handler signal context).
- Alpha, i386, and s390 are straighfoward to take in consideration the
new argument type.
- ia64 takes in consideration the kernel pass a struct sigcontextt
as third argument for sa_sigaction.
- sparc take in consideration the kernel pass a pt_regs struct
as third argument for sa_sigaction.
- m68k dummy function is removed and the FP state is dumped on
register_dump itself.
- For SH the register-dump.h file is consolidate on a common implementation
and the floating-point state is checked based on ownedfp field.
The register_dump does not change its output format in any affected
architecture.
I checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
arm-linux-gnueabihf, sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu,
powerpc64-linux-gnu, and powerpc64le-linux-gnu.
I also checked the libSegFault.so through catchsegv on alpha-linux-gnu,
m68k-linux-gnu and sh4-linux-gnu to confirm the output has not changed.
Adhemerval Zanella <adhemerval.zanella@linaro.org>
Florian Weimer <fweimer@redhat.com>
* debug/segfault.c (install_handler): Use SA_SIGINFO if defined.
* sysdeps/generic/profil-counter.h (__profil_counter): Cast to
uintptr_t.
* sysdeps/generic/sigcontextinfo.h (GET_PC): Rename to
sigcontext_get_pc and return aligned cast to uintptr_t.
* sysdeps/mach/hurd/i386/sigcontextinfo.h (GET_PC): Likewise.
* sysdeps/posix/profil.c (profil_count): Change PC argument to
uintptr_t.
(__profil): Use SA_SIGINFO.
* sysdeps/posix/sprofil.c (profil_count): Change PCP argument to
uintptr_t.
(__sprofil): Use SA_SIGINFO.
* sysdeps/unix/sysv/linux/profil-counter.h: New file.
* sysdeps/unix/sysv/linux/aarch64/profil-counter.h: Remove file.
* sysdeps/unix/sysv/linux/csky/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/i386/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/microblaze/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/mips/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/profil-counter.h: Likewise.
* sysdeps/sysv/linux/s390/s390-32/profil-counter.h: Likewise.
* sysdeps/sysv/linux/s390/s390-64/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/sh/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/arm/profil-counter.h (__profil_counter):
Assume SA_SIGINFO and use sigcontext_get_pc instead of GET_PC.
* sysdeps/unix/sysv/linux/sparc/profil-counter.h: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/profil-counter.h: Remove file.
* sysdeps/unix/sysv/linux/sparc/sparc32/profil-counter.h: Likewise.
* sysdpes/unix/sysv/linux/aarch64/sigcontextinfo.h (SIGCONTEXT,
GET_PC, __sigaction, sigaction): Remove defines.
(sigcontext_get_pc): New function.
* sysdeps/unix/sysv/linux/alpha/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/csky/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/i386/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/mips/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/s390/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/microblaze/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/sh/sigcontextinfo.h: Likewise.
* sysdeps/sysv/linux/sparc/sparc32/sigcontextinfo.h: Likewise.
* sysdeps/sysv/linux/sparc/sparc64/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/register-dump.h (register_dump):
Handle CTX argument as ucontext_t.
* sysdeps/unix/sysv/linux/i386/register-dump.h: Likewise.
Likewise.
* sysdeps/unix/sysv/linux/m68k/register-dump.h: Likewise.
* sysdeps/sysv/linux/s390/s390-32/register-dump.h: Likewise.
* sysdeps/sysv/linux/s390/s390-64/register-dump.h: Likewise.
* sysdeps/unix/sysv/linux/sh/register-dump.h: New file.
* sysdeps/unix/sysv/linux/sh/sh4/register-dump.h: Remove File.
* sysdeps/unix/sysv/linux/sh/sh3/register-dump.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/register-dump.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/register-dump.h: Likewise.
* sysdeps/unix/sysv/linux/Makefile (tests-internal): Add
tst-sigcontextinfo-get_pc.
* sysdeps/unix/sysv/linux/tst-sigcontextinfo-get_pc.c: New file.
(CFLAGS-tst-sigcontextinfo-get_pc.c): New rule.
The resolution of C floating-point Clarification Request 25
<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2397.htm#dr_25> is
that the totalorder and totalordermag functions should take pointer
arguments, and this has been adopted in C2X (with const added; note
that the integration of this change into C2X is present in the C
standard git repository but postdates the most recent public PDF
draft).
This patch updates glibc accordingly. As a defect resolution, the API
is changed unconditionally rather than supporting any sort of TS
18661-1 mode for compilation with the old version of the API. There
are compat symbols for existing binaries that pass floating-point
arguments directly. As a consequence of changing to pointer
arguments, there are no longer type-generic macros in tgmath.h for
these functions.
Because of the fairly complicated logic for creating libm function
aliases and determining the set of aliases to create in a given glibc
configuration, rather than duplicating all that in individual source
files to create the versioned and compat symbols, the source files for
the various versions of totalorder functions are set up to redefine
weak_alias before using libm_alias_* macros to create the symbols
required. In turn, this requires creating a separate alias for each
symbol version pointing to the same implementation (see binutils bug
<https://sourceware.org/bugzilla/show_bug.cgi?id=23840>), which is
done automatically using __COUNTER__. (As I noted in
<https://sourceware.org/ml/libc-alpha/2018-10/msg00631.html>, it might
well make sense for glibc's symbol versioning macros to do that alias
creation with __COUNTER__ themselves, which would somewhat simplify
the logic in the totalorder source files.)
It is of course desirable to test the compat symbols. I did this with
the generic libm-test machinery, but didn't wish to duplicate the
actual tables of test inputs and outputs, and thought it risky to
attempt to have a single object file refer to both default and compat
versions of the same function in order to test them together. Thus, I
created libm-test-compat_totalorder.inc and
libm-test-compat_totalordermag.inc which include the generated .c
files (with the processed version of those tables of inputs) from the
non-compat tests, and added appropriate dependencies. I think this
provides sufficient test coverage for the compat symbols without also
needing to make the special ldbl-96 and ldbl-128ibm tests (of
peculiarities relating to the representations of those formats that
can't be covered in the generic tests) run for the compat symbols.
Tests of compat symbols need to be internal tests, meaning _ISOMAC is
not defined. Making some libm-test tests into internal tests showed
up two other issues. GCC diagnoses duplicate macro definitions of
__STDC_* macros, including __STDC_WANT_IEC_60559_TYPES_EXT__; I added
an appropriate conditional and filed
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91451> for this issue.
On ia64, include/setjmp.h ends up getting included indirectly from
libm-symbols.h, resulting in conflicting definitions of the STR macro
(also defined in libm-test-driver.c); I renamed the macros in
include/setjmp.h. (It's arguable that we should have common internal
headers used everywhere for stringizing and concatenation macros.)
Tested for x86_64 and x86, and with build-many-glibcs.py.
* math/bits/mathcalls.h
[__GLIBC_USE (IEC_60559_BFP_EXT) || __MATH_DECLARING_FLOATN]
(totalorder): Take pointer arguments.
[__GLIBC_USE (IEC_60559_BFP_EXT) || __MATH_DECLARING_FLOATN]
(totalordermag): Likewise.
* manual/arith.texi (totalorder): Likewise.
(totalorderf): Likewise.
(totalorderl): Likewise.
(totalorderfN): Likewise.
(totalorderfNx): Likewise.
(totalordermag): Likewise.
(totalordermagf): Likewise.
(totalordermagl): Likewise.
(totalordermagfN): Likewise.
(totalordermagfNx): Likewise.
* math/tgmath.h (__TGMATH_BINARY_REAL_RET_ONLY): Remove macro.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (totalorder): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (totalordermag): Likewise.
* math/Versions (GLIBC_2.31): Add totalorder, totalorderf,
totalorderl, totalordermag, totalordermagf, totalordermagl,
totalorderf32, totalorderf64, totalorderf32x, totalordermagf32,
totalordermagf64, totalordermagf32x, totalorderf64x,
totalordermagf64x, totalorderf128 and totalordermagf128.
* math/Makefile (libm-test-funcs-noauto): Add compat_totalorder
and compat_totalordermag.
(libm-test-funcs-compat): New variable.
(libm-tests-compat): Likewise.
(tests): Do not include compat tests.
(tests-internal): Add compat tests.
($(foreach t,$(libm-tests-base),
$(objpfx)$(t)-compat_totalorder.o)): Depend
on $(objpfx)libm-test-totalorder.c.
($(foreach t,$(libm-tests-base),
$(objpfx)$(t)-compat_totalordermag.o): Depend on
$(objpfx)libm-test-totalordermag.c.
(tgmath3-macros): Remove totalorder and totalordermag.
* math/libm-test-compat_totalorder.inc: New file.
* math/libm-test-compat_totalordermag.inc: Likewise.
* math/libm-test-driver.c (struct test_ff_i_data): Update comment.
(RUN_TEST_fpfp_b): New macro.
(RUN_TEST_LOOP_fpfp_b): Likewise.
* math/libm-test-totalorder.inc (totalorder_test_data): Use
TEST_fpfp_b.
(totalorder_test): Condition on [!COMPAT_TEST].
(do_test): Likewise.
* math/libm-test-totalordermag.inc (totalordermag_test_data): Use
TEST_fpfp_b.
(totalordermag_test): Condition on [!COMPAT_TEST].
(do_test): Likewise.
* math/gen-tgmath-tests.py (Tests.add_all_tests): Remove
totalorder and totalordermag.
* math/test-tgmath.c (NCALLS): Change to 132.
(F(compile_test)): Do not call totalorder or totalordermag.
(F(totalorder)): Remove.
(F(totalordermag)): Likewise.
* include/float.h (__STDC_WANT_IEC_60559_TYPES_EXT__): Do not
define if [__STDC_WANT_IEC_60559_TYPES_EXT__].
* include/setjmp.h [!_ISOMAC] (STR_HELPER): Rename to
SJSTR_HELPER.
[!_ISOMAC] (STR): Rename to SJSTR. Update call to STR_HELPER.
[!_ISOMAC] (TEST_SIZE): Update call to STR.
[!_ISOMAC] (TEST_ALIGN): Likewise.
[!_ISOMAC] (TEST_OFFSET): Likewise.
* sysdeps/ieee754/dbl-64/s_totalorder.c: Include <shlib-compat.h>
and <first-versions.h>.
(__totalorder): Take pointer arguments. Add symbol versions and
compat symbols.
* sysdeps/ieee754/dbl-64/s_totalordermag.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalordermag): Take pointer arguments. Add symbol versions
and compat symbols.
* sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalorder): Take pointer arguments. Add symbol versions and
compat symbols.
* sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalordermag): Take pointer arguments. Add symbol versions
and compat symbols.
* sysdeps/ieee754/float128/float128_private.h
(__totalorder_compatl): New macro.
(__totalordermag_compatl): Likewise.
* sysdeps/ieee754/flt-32/s_totalorderf.c: Include <shlib-compat.h>
and <first-versions.h>.
(__totalorderf): Take pointer arguments. Add symbol versions and
compat symbols.
* sysdeps/ieee754/flt-32/s_totalordermagf.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalordermagf): Take pointer arguments. Add symbol versions
and compat symbols.
* sysdeps/ieee754/ldbl-128/s_totalorderl.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalorderl): Take pointer arguments. Add symbol versions and
compat symbols.
* sysdeps/ieee754/ldbl-128/s_totalordermagl.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalordermagl): Take pointer arguments. Add symbol versions
and compat symbols.
* sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Include
<shlib-compat.h>.
(__totalorderl): Take pointer arguments. Add symbol versions and
compat symbols.
* sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c: Include
<shlib-compat.h>.
(__totalordermagl): Take pointer arguments. Add symbol versions
and compat symbols.
* sysdeps/ieee754/ldbl-96/s_totalorderl.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalorderl): Take pointer arguments. Add symbol versions and
compat symbols.
* sysdeps/ieee754/ldbl-96/s_totalordermagl.c: Include
<shlib-compat.h> and <first-versions.h>.
(__totalordermagl): Take pointer arguments. Add symbol versions
and compat symbols.
* sysdeps/ieee754/ldbl-opt/nldbl-totalorder.c (totalorderl): Take
pointer arguments.
* sysdeps/ieee754/ldbl-opt/nldbl-totalordermag.c (totalordermagl):
Likewise.
* sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c
(do_test): Update calls to totalorderl and totalordermagl.
* sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c (do_test):
Update calls to totalorderl and totalordermagl.
* sysdeps/mach/hurd/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/csky/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
The kernel changes for a 64-bit time_t on 32-bit architectures
resulted in <asm/socket.h> indirectly including <linux/posix_types.h>.
The latter is not namespace-clean for the POSIX version of
<sys/socket.h>.
This issue has persisted across several Linux releases, so this commit
creates our own copy of the SO_* definitions for !__USE_MISC mode.
The new test socket/tst-socket-consts ensures that the copy is
consistent with the kernel definitions (which vary across
architectures). The test is tricky to get right because CPPFLAGS
includes include/libc-symbols.h, which in turn defines _GNU_SOURCE
unconditionally.
Tested with build-many-glibcs.py. I verified that a discrepancy in
the definitions actually results in a failure of the
socket/tst-socket-consts test.
Add:
int pthread_rwlock_clockrdlock (pthread_rwlock_t *rwlock,
clockid_t clockid,
const struct timespec *abstime)
and:
int pthread_rwlock_clockwrlock (pthread_rwlock_t *rwlock,
clockid_t clockid,
const struct timespec *abstime)
which behave like pthread_rwlock_timedrdlock and
pthread_rwlock_timedwrlock respectively, except they always measure
abstime against the supplied clockid. The functions currently support
CLOCK_REALTIME and CLOCK_MONOTONIC and return EINVAL if any other
clock is specified.
* sysdeps/nptl/pthread.h: Add pthread_rwlock_clockrdlock and
pthread_wrlock_clockwrlock.
* nptl/Makefile: Build pthread_rwlock_clockrdlock.c and
pthread_rwlock_clockwrlock.c.
* nptl/pthread_rwlock_clockrdlock.c: Implement
pthread_rwlock_clockrdlock.
* nptl/pthread_rwlock_clockwrlock.c: Implement
pthread_rwlock_clockwrlock.
* nptl/pthread_rwlock_common.c (__pthread_rwlock_rdlock_full): Add
clockid parameter and verify that it indicates a supported clock on
entry so that we fail even if it doesn't end up being used. Pass
that clock on to futex_abstimed_wait when necessary.
(__pthread_rwlock_wrlock_full): Likewise.
* nptl/pthread_rwlock_rdlock.c: (__pthread_rwlock_rdlock): Pass
CLOCK_REALTIME to __pthread_rwlock_rdlock_full even though it won't
be used because there's no timeout.
* nptl/pthread_rwlock_wrlock.c (__pthread_rwlock_wrlock): Pass
CLOCK_REALTIME to __pthread_rwlock_wrlock_full even though it won't
be used because there is no timeout.
* nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock):
Pass CLOCK_REALTIME to __pthread_rwlock_rdlock_full since abstime
uses that clock.
* nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock):
Pass CLOCK_REALTIME to __pthread_rwlock_wrlock_full since abstime
uses that clock.
* sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/microblaze/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist
(GLIBC_2.30): Likewise.
* nptl/tst-abstime.c (th): Add pthread_rwlock_clockrdlock and
pthread_rwlock_clockwrlock timeout tests to match the existing
pthread_rwlock_timedrdloock and pthread_rwlock_timedwrlock tests.
* nptl/tst-rwlock14.c (do_test): Likewise.
* nptl/tst-rwlock6.c Invent verbose_printf macro, and use for
ancillary output throughout. (tf): Accept thread_args structure so
that rwlock, a clockid and function name can be passed to the
thread. (do_test_clock): Rename from do_test. Accept clockid
parameter to specify test clock. Use the magic clockid value of
CLOCK_USE_TIMEDLOCK to indicate that pthread_rwlock_timedrdlock and
pthread_rwlock_timedwrlock should be tested, otherwise pass the
specified clockid to pthread_rwlock_clockrdlock and
pthread_rwlock_clockwrlock. Use xpthread_create and xpthread_join.
(do_test): Call do_test_clock to test each clockid in turn.
* nptl/tst-rwlock7.c: Likewise.
* nptl/tst-rwlock9.c (writer_thread, reader_thread): Accept
thread_args structure so that the (now int) thread number, the
clockid and the function name can be passed to the thread.
(do_test_clock): Renamed from do_test. Pass the necessary
thread_args when creating the reader and writer threads. Use
xpthread_create and xpthread_join.
(do_test): Call do_test_clock to test each clockid in turn.
* manual/threads.texi: Add documentation for
pthread_rwlock_clockrdlock and pthread_rwlock_clockwrclock.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Add:
int pthread_cond_clockwait (pthread_cond_t *cond,
pthread_mutex_t *mutex,
clockid_t clockid,
const struct timespec *abstime)
which behaves just like pthread_cond_timedwait except it always measures
abstime against the supplied clockid. Currently supports CLOCK_REALTIME
and
CLOCK_MONOTONIC and returns EINVAL if any other clock is specified.
Includes feedback from many others. This function was originally
proposed[1] as pthread_cond_timedwaitonclock_np, but The Austin Group
preferred the new name.
* nptl/Makefile: Add tst-cond26 and tst-cond27
* nptl/Versions (GLIBC_2.30): Add pthread_cond_clockwait
* sysdeps/nptl/pthread.h: Likewise
* nptl/forward.c: Add __pthread_cond_clockwait
* nptl/forward.c: Likewise
* nptl/pthreadP.h: Likewise
* sysdeps/nptl/pthread-functions.h: Likewise
* nptl/pthread_cond_wait.c (__pthread_cond_wait_common): Add
clockid parameter and comment describing why we don't need to
check
its value. Use that value when calling
futex_abstimed_wait_cancelable rather than reading the clock
from
the flags. (__pthread_cond_wait): Pass unused clockid parameter.
(__pthread_cond_timedwait): Read clock from flags and pass it to
__pthread_cond_wait_common. (__pthread_cond_clockwait): Add new
function with weak alias from pthread_cond_clockwait.
* sysdeps/mach/hurd/i386/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/aarch64/libpthread.abilist
* (GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/microblaze/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30):
* Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist
(GLIBC_2.30): Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist
(GLIBC_2.30): Likewise.
* nptl/tst-cond11.c (run_test): Support testing
pthread_cond_clockwait too by using a special magic
CLOCK_USE_ATTR_CLOCK value to determine whether to call
pthread_cond_timedwait or pthread_cond_clockwait. (do_test):
Pass
CLOCK_USE_ATTR_CLOCK for existing tests, and add new tests using
all combinations of CLOCK_MONOTONIC and CLOCK_REALTIME.
* ntpl/tst-cond26.c: New test for passing unsupported and
* invalid
clocks to pthread_cond_clockwait.
* nptl/tst-cond27.c: Add test similar to tst-cond5.c, but using
struct timespec and pthread_cond_clockwait.
* manual/threads.texi: Document pthread_cond_clockwait. The
* comment
was provided by Carlos O'Donell.
[1] https://sourceware.org/ml/libc-alpha/2015-07/msg00193.html
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
With commit f0b2132b35 ("ld.so:
Support moving versioned symbols between sonames [BZ #24741]"), the
dynamic linker will find the definition of vfork in libc and binds
a vfork reference to that symbol, even if the soname in the version
reference says that the symbol should be located in libpthread.
As a result, the forwarder (whether it's IFUNC-based or a duplicate
of the libc implementation) is no longer necessary.
On older architectures, a placeholder symbol is required, to make sure
that the GLIBC_2.1.2 symbol version does not go away, or is turned in
to a weak symbol definition by the link editor. (The symbol version
needs to preserved so that the symbol coverage check in
elf/dl-version.c does not fail for old binaries.)
mips32 is an outlier: It defined __vfork@@GLIBC_2.2, but the
baseline is GLIBC_2.0. Since there are other @@GLIBC_2.2 symbols,
the placeholder symbol is not needed there.
The kernel is evolving this interface (e.g., removal of the
restriction on cross-device copies), and keeping up with that
is difficult. Applications which need the function should
run kernels which support the system call instead of relying on
the imperfect glibc emulation.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
No 32-bit system call wrapper is added because the interface
is problematic because it cannot deal with 64-bit inode numbers
and 64-bit directory hashes.
A future commit will deprecate the undocumented getdirentries
and getdirentries64 functions.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Linux 5.1 adds missing syscalls to the syscall table for many Linux
kernel architectures. This patch updates the kernel-features.h
headers accordingly. __ASSUME_DIRECT_SYSVIPC_SYSCALLS is not updated
because of the differences between new and old syscalls described in
<https://sourceware.org/ml/libc-alpha/2019-05/msg00235.html>. The
statfs64 structure used by alpha matches what the new kernel syscalls
use.
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_STATFS64): Only undefine if [__LINUX_KERNEL_VERSION <
0x050100].
* sysdeps/unix/sysv/linux/ia64/kernel-features.h (__ASSUME_STATX):
Likewise.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_STATX): Likewise.
The tgkill function is sometimes used in crash handlers.
<bits/signal_ext.h> follows the same approach as <bits/unistd_ext.h>
(which was added for the gettid system call wrapper).
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The twalk function is very difficult to use in a multi-threaded
program because there is no way to pass external state to the
iterator function.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Fixes build using v5.1-rc1 headers.
The kernel has cleaned up how these are defined. Previous behavior
was to define __NR_osf_shmat as 209 and not define __NR_shmat.
Current behavior is to define __NR_shmat as 209 and then define
__NR_osf_shmat as __NR_shmat.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h (__NR_shmat):
Do not redefine.
* sysdeps/unix/sysv/linux/alpha/sysdep.h (__NR_osf_shmat):
Do not redefine.
This patch fixes further coding style issues where code should have
broken lines before operators in accordance with the GNU Coding
Standards but instead was breaking lines after them.
Tested for x86_64, and with build-many-glibcs.py.
* stdio-common/vfscanf-internal.c (ARG): Break lines before rather
than after operators.
* sysdeps/mach/hurd/setitimer.c (timer_thread): Likewise.
(setitimer_locked): Likewise.
* sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise.
* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
* sysdeps/mach/pagecopy.h (PAGE_COPY_FWD): Likewise.
* sysdeps/mach/thread_state.h (machine_get_basic_state): Likewise.
* sysdeps/powerpc/powerpc64/tst-ucontext-ppc64-vscr.c
(PPC_CPU_SUPPORTED): Likewise.
* sysdeps/unix/sysv/linux/alpha/a.out.h (N_TXTOFF): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h
(stat_overflow): Likewise.
(statfs_overflow): Likewise.
* sysdeps/unix/sysv/linux/tst-personality.c (do_test): Likewise.
* sysdeps/unix/sysv/linux/tst-ttyname.c (eq_ttyname): Likewise.
(eq_ttyname_r): Likewise.
(run_chroot_tests): Likewise.
On platforms where long double may have the same format as double
(-mlong-double-64), error and error_at_line do not take that into
account and might produce wrong output if a long double conversion is
requested by the format string ('%Lf'). This patch adds compatibility
functions for this situation and redirects calls via header magic.
Tested for powerpc, powerpc64 and powerpc64le.
When support for long double format with 128-bits (-mlong-double-128)
was added for platforms where long double had the same format as double,
such as powerpc, compatibility versions for the functions listed in the
commit title were missed. Since the older format of long double can
still be used (with -mlong-double-64), using these functions with a
format string that requests the printing of long double variables will
produce wrong outputs.
This patch adds the missing compatibility functions and header magic to
redirect calls to them when -mlong-double-64 is in use.
Tested for powerpc, powerpc64 and powerpc64le.
The functions argp_error and argp_failure are missing support for
printing long double values when long double has the same format as
double. This patch adds the new functions __nldbl_argp_error and
__nldbl_argp_failure, as well as header magic to redirect calls to them
when -mlong-double-64 is in use.
Tested for powerpc, powerpc64 and powerpc64le.
This patch fixes more places where a space should have been present
before '(' in accordance with the GNU Coding Standards (as with the
previous patch, mainly for calls to sizeof).
Tested with build-many-glibcs.py.
* sysdeps/powerpc/powerpc32/dl-machine.c
(__elf_machine_fixup_plt): Use space before '('.
(__process_machine_rela): Likewise.
* sysdeps/powerpc/powerpc32/register-dump.h (register_dump):
Likewise.
* sysdeps/powerpc/powerpc64/le/fpu/sfp-machine.h (TI_BITS):
Likewise.
* sysdeps/powerpc/powerpc64/register-dump.h (register_dump):
Likewise.
* sysdeps/powerpc/test-arith.c (union_t): Likewise.
(pattern): Likewise.
(delta): Likewise.
(check_result): Likewise.
(check_excepts): Likewise.
(check_op): Likewise.
(fail_xr): Likewise.
* sysdeps/unix/alpha/sysdep.h (syscall_promote): Likewise.
* sysdeps/unix/sysv/linux/alpha/a.out.h (AOUTHSZ): Likewise.
(SCNHSZ): Likewise.
* sysdeps/unix/sysv/linux/hppa/makecontext.c (FRAME_SIZE_BYTES):
Likewise.
(ARGS): Likewise.
(__makecontext): Likewise.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h (ucontext_t):
Likewise.
This commit adds gettid to <unistd.h> on Linux, and not to the
kernel-independent GNU API.
gettid is now supportable on Linux because too many things assume a
1:1 mapping between libpthread threads and kernel threads.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This patch consolidates the Linux termios.h by removing the arch-specific
one.
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
bits/termios-misc.h.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Remove file.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios-misc.h: New file.
* sysdeps/unix/sysv/linux/bits/termios.h: Include termios-misc.h.
It is used only on hurd.
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/bits/termios.h (_IOT_termios): Remove.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
This patch consolidates the termios symbolic constants for use with tcflow
in its own header. The Linux generic implementation values match the
kernel UAPI and each architecture with deviate values have their own
implementation (currently only mips).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
termios-tcflow.h.
* sysdeps/unix/sysv/linux/bits/termios-tcflow.h: New file.
* sysdeps/unix/sysv/linux/mips/bits/termios-tcflow.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h (TCSANOW, TCSADRAIN,
TCSAFLUSH): Move to termios-tcflow.h.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
This patch consolidates the termios symbolic constants used for local
mode with c_lflag member on its own header. The Linux generic implementation
values match the kernel UAPI and each architecture with deviate values
have their own implementation (in this case alpha, mips, and powerpc).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
termios-c_lflag.h.
* sysdeps/unix/sysv/linux/bits/termios-c_lflag.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/termios-c_lflag.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios-c_lflag.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios-c_lflag.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h (ISIG, ISCANON, ECHO, ECHOE,
ECHOK, ECHONL, NOFLSH, TOSTOP, IEXTEN): Move to termios-c_lflag.h.
[__USE_MISC || (__USE_XOPEN && !__USE_XOPEN2K)] (XCASE): Likewise.
[__USE_MISC] (ECHOCTL, ECHOPRT, ECHOKE, FLUSHO, PENDIN, EXTPROC):
Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
This patch consolidates the termios symbolic constants used for output
mode with c_cflag memver on its own header. The Linux generic
implementation values match the kernel UAPI and each architecture with
deviate values have their own implementation (in this case alpha and
powerpc).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
termios-c_cflag.h.
* sysdeps/unix/sysv/linux/bits/termios-c_cflag.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/termios-c_cflag.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios-c_cflag.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h (CSIZE, CS5, CS6, CS7, CS8,
CSTOPB, CREAD, PARENB, PARODD, HUPCL, CLOCAL): Move to
termios-c_cflag.h.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
This patch consolidates the termios symbolic constants used for baud rates
selection used along with speed_t on its own header. The Linux generic
implementation values match the kernel UAPI and each architecture with
deviate values have their own implementation (in this case alpha and
powerpc).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
[BZ #23783]
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
termios-baud.h.
* sysdeps/unix/sysv/linux/bits/termios-baud.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/termios-baud.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios-baud.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios-baud.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h (B57600, B115200,
B230400, B460800, B500000, B576000, B921600, B1000000, B1152000,
B1500000, B2000000, B2500000, B3000000, B3500000, B4000000,
__MAX_BAUD): Move to termios-baud.h.
[__USE_MISC] (CBAUD, CBAUDEX): Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
This patch consolidates the termios symbolic constants used for ouput
modes with c_oflag member on its own header. The Linux generic implementation
values match the kernel UAPI and each architecture with deviate values
have their own implementation (in this case alpha, powerpc, and sparc).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add
termios-c_oflag.h.
* sysdeps/unix/sysv/linux/bits/termios-c_oflag.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/termios-c_oflag.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios-c_oflag.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios-c_oflag.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h (OPOST, OLCUC, ONLCR, OCRNL,
ONOCR, ONLRET, OFILL, OFDEL, VTDLY, VT0, VT1): Move to
termios-c_oflag.h.
[__USE_MISC || __USE_XOPEN] (NLDLY, NL0, NL1, CRDLY, CR0, CR1, CR2,
CR3, TABDLY, TAB0, TAB1, TAB2, TAB3, BSDLY, BS0, BS1, FFDLY, FF0,
FFR1): Likewise.
[USE_MISC] (XTABS): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h Likewise.
This patch consolidates the termios symbolic constants used for input
modes with c_iflag member on its own header. The Linux generic implementation
values match the kernel UAPI and each architecture with deviate values
have their own implementation (in this case alpha and powerpc).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdeps_headers): Add
termios-c_iflag.h.
* sysdeps/unix/sysv/linux/bits/termios-c_iflag.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/termios-c_iflag.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios-c_iflag.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h (IGNBRK, BRKINT, IGNPAR, PARMRK,
INPCK, ISTRIP, INLCR, IGNCR, ICRNL, IXON, IXOFF, IXANY, IUCLC, IMAXBEL,
IUTF8): Move to termios-c_iflag.h.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
This patch consolidates the termios symbolic constants used as subscript
for the array c_cc on its own header. The Linux generic implementation
values match the kernel UAPI and each architecture with deviate values
have their own implementation (in this case alpha, mips64, sparc64, and
powerpc).
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdeps_headers): Add
termios-cc.h.
* sysdeps/unix/sysv/linux/bits/termios-c_cc.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/termios-c_cc.h: New file.
* sysdeps/unix/sysv/linux/mips/bits/termios-c_cc.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios-c_cc.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios-c_cc.h: Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h (VINTR, VQUIT, VERASE,
VKILL, VEOF, VTIME, VMIN, VSWTC, VSTART, VSTOP, VSUSP, VEOL,
VREPRINT, VDISCARD, VWERASE, VLNEXT, VEOLF2): Move to termios-cc.h.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
This patch consolidates the struct termios definition on its own header
and adds arch-defined ones for ABIs that deviate from generic
implementation. They are:
- alpha which has a slight different layout than generic one (c_cc
field is defined prior c_line).
- sparc and mips which do not have the c_ispeed/c_ospeed fields.
No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h: New file.
* sysdeps/unix/sysv/linux/bits/termios-struct.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios-struct.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h: Likewise.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
termios-struct.h.
* sysdeps/unix/sysv/linux/bits/termios.h (struct termios): Move to
termios-struct.h.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h (struct termios):
Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h (struct termios):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h (struct termios):
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h (struct termios):
Likewise.
* sysdeps/unix/sysv/linux/kernel_termios.h (_HAVE_C_ISPEED,
_HAVE_C_OSPEED): Define.
* sysdeps/unix/sysv/linux/mips/kernel_termios.h (_HAVE_C_ISPEED,
_HAVE_C_OSPEED): Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel_termios.h (_HAVE_C_ISPEED,
_HAVE_C_OSPEED): Likewise.
* sysdeps/unix/sysv/linux/speed.c [_HAVE_STRUCT_TERMIOS_C_OSPEED]
(cfsetospeed): Check for define value instead of existence.
[_HAVE_STRUCT_TERMIOS_C_ISPEED] (cfsetispeed): Likewise.
* sysdeps/unix/sysv/linux/tcgetattr.c [_HAVE_STRUCT_TERMIOS_C_ISPEED
&& _HAVE_C_ISPEED] (__tcgetattr): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c [_HAVE_STRUCT_TERMIOS_C_ISPEED
&& _HAVE_C_ISPEED] (__tcsetattr): Likewise.
Alpha rt_sigaction syscall uses a slight different kernel ABI than
generic one:
arch/alpha/kernel/signal.c
90 SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
91 struct sigaction __user *, oact,
92 size_t, sigsetsize, void __user *, restorer)
Similar as sparc, the syscall expects a restorer function. However
different than sparc, alpha defines the restorer as the 5th argument
(sparc defines as the 4th).
This patch removes the arch-specific alpha sigaction implementation,
adapt the Linux generic one to different restore placements (through
STUB macro), and make alpha use the Linux generic kernel_sigaction
definition.
Checked on alpha-linux-gnu and x86_64-linux-gnu (for sanity).
* sysdeps/unix/sysv/linux/alpha/Makefile: Update comment about
__syscall_rt_sigaction.
* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h
(kernel_sigaction): Use Linux generic defintion.
(STUB): Define.
(__syscall_rt_sigreturn, __syscall_sigreturn): Add prototype.
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
(__syscall_rt_sigaction): Remove implementation.
(__syscall_sigreturn, __syscall_rt_sigreturn): Define as global and
hidden.
* sysdeps/unix/sysv/linux/alpha/sigaction.c: Remove file.
* sysdeps/unix/sysv/linux/alpha/sysdep.h (INLINE_SYSCALL,
INTERNAL_SYSCALL): Remove definitions.
* sysdeps/unix/sysv/linux/sigaction.c: Define STUB to accept both the
action and signal set size.
* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (STUB): Redefine.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (STUB): Likewise.
kernel-features.h has a macro __ASSUME_ST_INO_64_BIT, with a comment
"However, SH is lame, and still does not have a 64-bit inode field.".
The macro is, in fact, defined to 0 by Alpha as well as SH. The Alpha
case is, however, trivially useless: none of the files that test
__ASSUME_ST_INO_64_BIT are built for Alpha (which gained kernel
support for stat64 syscalls, with a 64-bit st_ino field, in Linux
2.6.4; the define to 0 for Alpha in glibc predates that).
The SH kernel gained support for a 64-bit st_ino in struct stat64 in
commit 760bcb1deec13c50e20399c84cb6a8ea41cc2820 ("sh: Fix fstatat64()
syscall."), which is in Linux 2.6.22 and later. So the redefinition
of __ASSUME_ST_INO_64_BIT to 0 is of no use for SH either; three of
the files testing it do so immediately after a stat64-family syscall
has been used, which will always have set the 64-bit st_ino correctly
(in addition to the 32-bit __st_ino), while the relevant code
__xstat32_conv executes only after such a syscall in the function
calling __xstat32_conv.
Thus this patch removes __ASSUME_ST_INO_64_BIT and code testing it.
Removing the useless [!__ASSUME_ST_INO_64_BIT] code in __xstat32_conv
renders the [_HAVE_STAT64___ST_INO] and [!_HAVE_STAT64___ST_INO] cases
around it identical, so that conditional is also removed.
Tested compilation with build-many-glibcs.py for its Alpha and SH
configurations; also ran the glibc testsuite for x86_64 and x86.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_ST_INO_64_BIT): Remove macro definition.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_ST_INO_64_BIT): Do not undefine and define.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_ST_INO_64_BIT): Likewise.
* sysdeps/unix/sysv/linux/fxstat64.c: Do not include
<kernel-features.h>.
(___fxstat64) [_HAVE_STAT64___ST_INO && !__ASSUME_ST_INO_64_BIT]:
Remove conditional code.
* sysdeps/unix/sysv/linux/lxstat64.c: Do not include
<kernel-features.h>.
(___lxstat64) [_HAVE_STAT64___ST_INO && !__ASSUME_ST_INO_64_BIT]:
Remove conditional code.
* sysdeps/unix/sysv/linux/xstat64.c: Do not include
<kernel-features.h>.
(___xstat64) [_HAVE_STAT64___ST_INO && !__ASSUME_ST_INO_64_BIT]:
Remove conditional code.
* sysdeps/unix/sysv/linux/xstatconv.c: Do not include
<kernel-features.h>.
(__xstat32_conv) [_HAVE_STAT64___ST_INO]: Remove conditional code.
[!_HAVE_STAT64___ST_INO]: Make code unconditional.
Along with posix_spawn_file_actions_addchdir,
posix_spawn_file_actions_addfchdir is the subject of a change proposal
for POSIX: <http://austingroupbugs.net/view.php?id=1208>
Introduce new pow symbol version that doesn't do SVID compatible error
handling. The standard errno and fp exception based error handling is
inline in the new code and does not have significant overhead.
The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty
w_pow.c and enabled for targets with their own pow implementation or
ifunc dispatch on __ieee754_pow by including math/w_pow.c.
The compatibility symbol version still uses the wrapper with SVID error
handling around the new code. There is no new symbol version nor
compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv).
On targets where previously powl was an alias of pow, now it points to
the compatibility symbol with the wrapper, because it still need the
SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm)
and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well.
The __pow_finite symbol is now an alias of pow. Both __pow_finite and
pow set errno and thus not const functions.
The ia64 asm is changed so the compat and new symbol versions map to the
same address.
On x86_64 #include <math.h> was added before macro definitions that
may affect that header.
Tested with build-many-glibcs.py.
* math/Versions (GLIBC_2.29): Add pow.
* math/w_pow_compat.c (__pow_compat): Change to versioned compat
symbol.
* math/w_pow.c: New file.
* sysdeps/i386/fpu/w_pow.c: New file.
* sysdeps/ia64/fpu/e_pow.S: Add versioned symbols.
* sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Rename to __pow
and add necessary aliases.
* sysdeps/ieee754/dbl-64/w_pow.c: New file.
* sysdeps/m68k/m680x0/fpu/w_pow.c: New file.
* sysdeps/mach/hurd/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
* sysdeps/x86_64/fpu/multiarch/e_pow-fma.c (__ieee754_pow): Rename to
__pow.
* sysdeps/x86_64/fpu/multiarch/e_pow-fma4.c (__ieee754_pow): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_pow.c (__ieee754_pow): Likewise.
* sysdeps/x86_64/fpu/multiarch/w_pow.c: New file.
Introduce new log2 symbol version that doesn't do SVID compatible error
handling. The standard errno and fp exception based error handling is
inline in the new code and does not have significant overhead.
The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty
w_log2.c and enabled for targets with their own log2 implementation by
including math/w_log2.c.
The compatibility symbol version still uses the wrapper with SVID error
handling around the new code. There is no new symbol version nor
compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv).
On targets where previously log2l was an alias of log2, now it points to
the compatibility symbol with the wrapper, because it still need the
SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm)
and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well.
The __log2_finite symbol is now an alias of log2. Both __log2_finite
and log2 set errno and thus not const functions.
The ia64 asm is changed so the compat and new symbol versions map to the
same address.
Tested with build-many-glibcs.py.
* math/Versions (GLIBC_2.29): Add log2.
* math/w_log2_compat.c (__log2_compat): Change to versioned compat
symbol.
* math/w_log2.c: New file.
* sysdeps/i386/fpu/w_log2.c: New file.
* sysdeps/ia64/fpu/e_log2.S: Add versioned symbols.
* sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Rename to __log2
and add necessary aliases.
* sysdeps/ieee754/dbl-64/w_log2.c: New file.
* sysdeps/m68k/m680x0/fpu/w_log2.c: New file.
* sysdeps/mach/hurd/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
Introduce new log symbol version that doesn't do SVID compatible error
handling. The standard errno and fp exception based error handling is
inline in the new code and does not have significant overhead.
The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty
w_log.c and enabled for targets with their own log implementation by
including math/w_log.c.
The compatibility symbol version still uses the wrapper with SVID error
handling around the new code. There is no new symbol version nor
compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv).
On targets where previously logl was an alias of log, now it points to
the compatibility symbol with the wrapper, because it still need the
SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm)
and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well.
The __log_finite symbol is now an alias of log. Both __log_finite and
log set errno and thus not const functions.
The ia64 asm is changed so the compat and new symbol versions map to the
same address.
On x86_64 #include <math.h> was added before macro definitions that may
affect that header.
Tested with build-many-glibcs.py.
* math/Versions (GLIBC_2.29): Add log.
* math/w_log_compat.c (__log_compat): Change to versioned compat
symbol.
* math/w_log.c: New file.
* sysdeps/i386/fpu/w_log.c: New file.
* sysdeps/ia64/fpu/e_log.S: Update.
* sysdeps/ieee754/dbl-64/e_log.c (__ieee754_log): Rename to __log
and add necessary aliases.
* sysdeps/ieee754/dbl-64/w_log.c: New file.
* sysdeps/m68k/m680x0/fpu/w_log.c: New file.
* sysdeps/mach/hurd/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
* sysdeps/x86_64/fpu/multiarch/e_log-avx.c (__ieee754_log): Rename to
__log.
* sysdeps/x86_64/fpu/multiarch/e_log-fma.c (__ieee754_log): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_log-fma4.c (__ieee754_log): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_log.c (__ieee754_log): Likewise.
* sysdeps/x86_64/fpu/multiarch/w_log.c: New file.
Introduce new exp and exp2 symbol version that don't do SVID compatible
error handling. The standard errno and fp exception based error handling
is inline in the new code and does not have significant overhead.
The double precision wrappers are disabled for sysdeps/ieee754/dbl-64
by using empty w_exp.c and w_exp2.c files, the math/w_exp.c and
math/w_exp2.c files use the wrapper template and can be included by
targets that have their own exp and exp2 implementations or use ifunc
on the glibc internal __ieee754_exp symbol.
The compatibility symbol versions still use the wrapper with SVID error
handling around the new code. There is no new symbol version nor
compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv).
On targets where previously expl and exp2l were aliases of exp and exp2,
now they point to the compatibility symbols with the wrapper, because
they still need the SVID compatible error handling. This affects
NO_LONG_DOUBLE (e.g arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets
as well.
The _finite symbols are now aliases of the standard symbols (they have
no performance advantage anymore). Both the standard symbols and
_finite symbols set errno and thus not const functions.
The ia64 asm is changed so the compat and new symbol versions map to the
same address.
On x86_64 #include <math.h> was added before macro definitions that may
affect that header (the new macro name is __exp instead of __ieee754_exp
which breaks some math.h macros).
Tested with build-many-glibcs.py.
* math/Versions (GLIBC_2.29): Add exp and exp2.
* math/w_exp2_compat.c (__exp2_compat): Change to versioned compat
symbol, handle NO_LONG_DOUBLE and LONG_DOUBLE_COMPAT explicitly.
* math/w_exp_compat.c (__exp_compat): Likewise.
* math/w_exp.c: New file.
* math/w_exp2.c: New file.
* sysdeps/i386/fpu/w_exp.c: New file.
* sysdeps/i386/fpu/w_exp2.c: New file.
* sysdeps/ia64/fpu/e_exp.S: Add versioned symbols.
* sysdeps/ia64/fpu/e_exp2.S: Likewise.
* sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Rename to __exp
and add necessary aliases.
* sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Rename to __exp2
and add necessary aliases.
* sysdeps/ieee754/dbl-64/w_exp.c: New file.
* sysdeps/ieee754/dbl-64/w_exp2.c: New file.
* sysdeps/m68k/m680x0/fpu/w_exp.c: New file.
* sysdeps/m68k/m680x0/fpu/w_exp2.c: New file.
* sysdeps/mach/hurd/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__exp1): Remove.
(__ieee754_exp): Rename to __exp.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__exp1): Remove.
(__ieee754_exp): Rename to __exp.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__exp1): Remove.
(__ieee754_exp): Rename to __exp.
* sysdeps/x86_64/fpu/multiarch/e_exp.c (__ieee754_exp): Rename to
__exp.
* sysdeps/x86_64/fpu/multiarch/w_exp.c: New file.
sysdeps/unix/sysv/linux/bits/shm.h has padding after time fields in
struct shmid_ds unconditionally, and thus is only suitable for 32-bit
architectures (no 64-bit configurations use this file);
sysdeps/unix/sysv/linux/generic/bits/shm.h is substantively the same,
except that the padding is conditioned on __WORDSIZE == 32, and so it
can be used for 64-bit architectures as well.
This patch adds the conditionals to
sysdeps/unix/sysv/linux/bits/shm.h. The linux/generic/ version is
then no longer needed and so is removed, as are the alpha and s390
versions which are also no longer needed. The other
architecture-specific versions have different padding, layout, types
or SHMLBA definitions and so are still needed after this change.
This is essentially the same change for bits/shm.h as the bits/msq.h
patch and the bits/sem.h patch. However, the details of the padding
variations for the architectures that aren't changed are not all the
same between msqid_ds, shmid_ds and semid_ds.
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/bits/shm.h: Include <bits/wordsize.h>.
(struct shmid_ds): Condition padding after time fields on
[__WORDSIZE == 32].
* sysdeps/unix/sysv/linux/alpha/bits/shm.h: Remove file.
* sysdeps/unix/sysv/linux/generic/bits/shm.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/shm.h: Likewise.
sysdeps/unix/sysv/linux/bits/sem.h has padding after time fields in
struct semid_ds unconditionally, and thus is only suitable for 32-bit
architectures (no 64-bit configurations use this file);
sysdeps/unix/sysv/linux/generic/bits/sem.h is substantively the same,
except that the padding is conditioned on __WORDSIZE == 32, and so it
can be used for 64-bit architectures as well.
This patch adds the conditionals to
sysdeps/unix/sysv/linux/bits/sem.h. The linux/generic/ version is
then no longer needed and so is removed, as are the alpha, ia64 and
s390 versions which are also no longer needed. The other
architecture-specific versions have different padding or types and so
are still needed after this change.
This is essentially the same change for bits/sem.h as the bits/msq.h
patch. However, the details of the padding variations for the
architectures that aren't changed are not all the same between
msqid_ds and semid_ds.
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/bits/sem.h: Include <bits/wordsize.h>.
(struct semid_ds): Condition padding after time fields on
[__WORDSIZE == 32].
* sysdeps/unix/sysv/linux/alpha/bits/sem.h: Remove file.
* sysdeps/unix/sysv/linux/generic/bits/sem.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sem.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/sem.h: Likewise.
sysdeps/unix/sysv/linux/bits/msq.h has padding after time fields in
struct msqid_ds unconditionally, and thus is only suitable for 32-bit
architectures (no 64-bit configurations use this file);
sysdeps/unix/sysv/linux/generic/bits/msq.h is substantively the same,
except that the padding is conditioned on __WORDSIZE == 32, and so it
can be used for 64-bit architectures as well.
This patch adds the conditionals to
sysdeps/unix/sysv/linux/bits/msq.h. The linux/generic/ version is
then no longer needed and so is removed, as are the alpha, ia64 and
s390 versions which are also no longer needed. The other
architecture-specific versions have different padding or types and so
are still needed after this change.
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/bits/msq.h: Include <bits/wordsize.h>.
(struct msqid_ds): Condition padding after time fields on
[__WORDSIZE == 32].
* sysdeps/unix/sysv/linux/alpha/bits/msq.h: Remove file.
* sysdeps/unix/sysv/linux/generic/bits/msq.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/msq.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/msq.h: Likewise.
This patch completes the process of unifying sys/procfs.h headers for
architectures using the Linux kernel by making alpha use the generic
version.
That was previously deferred because alpha has different definitions
of prgregset_t and prfpregset_t from other architectures, so changing
to the common definitions would change C++ name mangling. To avoid
such a change, a header bits/procfs-prregset.h is added, and alpha
gets its own version of that header.
Tested for x86_64 and x86, and with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/sys/procfs.h: Include
<bits/procfs-prregset.h>.
(prgregset_t): Define using __prgregset_t.
(prfpregset_t): Define using __prfpregset_t.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) = misc]
(sysdep_headers): Add bits/procfs-prregset.h.
* sysdeps/unix/sysv/linux/bits/procfs-prregset.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/procfs-prregset.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/procfs.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/procfs.h: Remove file.
The implementation falls back to renameat if renameat2 is not available
in the kernel (or in the kernel headers) and the flags argument is zero.
Without kernel support, a non-zero argument returns EINVAL, not ENOSYS.
This mirrors what the kernel does for invalid renameat2 flags.
This patch fixes the OFD ("file private") locks for architectures that
support non-LFS flock definition (__USE_FILE_OFFSET64 not defined). The
issue in this case is both F_OFD_{GETLK,SETLK,SETLKW} and
F_{SET,GET}L{W}K64 expects a flock64 argument and when using old
F_OFD_* flags with a non LFS flock argument the kernel might interpret
the underlying data wrongly. Kernel idea originally was to avoid using
such flags in non-LFS syscall, but since GLIBC uses fcntl with LFS
semantic as default it is possible to provide the functionality and
avoid the bogus struct kernel passing by adjusting the struct manually
for the required flags.
The idea follows other LFS interfaces that provide two symbols:
1. A new LFS fcntl64 is added on default ABI with the usual macros to
select it for FILE_OFFSET_BITS=64.
2. The Linux non-LFS fcntl use a stack allocated struct flock64 for
F_OFD_{GETLK,SETLK,SETLKW} copy the results on the user provided
struct.
3. Keep a compat symbol with old broken semantic for architectures
that do not define __OFF_T_MATCHES_OFF64_T.
So for architectures which defines __USE_FILE_OFFSET64, fcntl64 will
aliased to fcntl and no adjustment would be required. So to actually
use F_OFD_* with LFS support the source must be built with LFS support
(_FILE_OFFSET_BITS=64).
Also F_OFD_SETLKW command is handled a cancellation point, as for
F_SETLKW{64}.
Checked on x86_64-linux-gnu and i686-linux-gnu.
[BZ #20251]
* NEWS: Mention fcntl64 addition.
* csu/check_fds.c: Replace __fcntl_nocancel by __fcntl64_nocancel.
* login/utmp_file.c: Likewise.
* sysdeps/posix/fdopendir.c: Likewise.
* sysdeps/posix/opendir.c: Likewise.
* sysdeps/unix/pt-fcntl.c: Likewise.
* include/fcntl.h (__libc_fcntl64, __fcntl64,
__fcntl64_nocancel_adjusted): New prototype.
(__fcntl_nocancel_adjusted): Remove prototype.
* io/Makefile (routines): Add fcntl64.
(CFLAGS-fcntl64.c): New rule.
* io/Versions [GLIBC_2.28] (fcntl64): New symbol.
[GLIBC_PRIVATE] (__libc_fcntl): Rename to __libc_fcntl64.
* io/fcntl.h (fcntl64): Add prototype and redirect if
__USE_FILE_OFFSET64 is defined.
* io/fcntl64.c: New file.
* manual/llio.text: Add a note for which commands fcntl acts a
cancellation point.
* nptl/Makefile (CFLAGS-fcntl64.c): New rule.
* sysdeps/mach/hurd/fcntl.c: Alias fcntl to fcntl64 symbols.
* sysdeps/mach/hurd/i386/libc.abilist [GLIBC_2.28] (fcntl, fcntl64):
New symbols.
* sysdeps/unix/sysv/linux/fcntl.c (__libc_fcntl): Fix F_GETLK64,
F_OFD_GETLK, F_SETLK64, F_SETLKW64, F_OFD_SETLK, and F_OFD_SETLKW for
non-LFS case.
* sysdeps/unix/sysv/linux/fcntl64.c: New file.
* sysdeps/unix/sysv/linux/fcntl_nocancel.c (__fcntl_nocancel): Rename
to __fcntl64_nocancel.
(__fcntl_nocancel_adjusted): Rename to __fcntl64_nocancel_adjusted.
* sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): Rename
to __fcntl64_nocancel.
* sysdeps/unix/sysv/linux/tst-ofdlocks.c: New file.
* sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Likewise.
* sysdeps/unix/sysv/linux/Makefile (tests): Add tst-ofdlocks.
(tests-internal): Add tst-ofdlocks-compat.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.28]
(fcntl64): New symbol.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libc.abilist [GLIBC_2.28] (fcntl,
fcntl64): Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilis: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
This patch makes the alpha bits/termios.h define XTABS to TAB3, so
matching a change made in Linux 4.16 as well as matching other
architectures where the values are already equal.
Tested with build-many-glibcs.py for alpha-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h [__USE_MISC]
(XTABS): Define to TAB3.
This patch consolidates Linux getdents{64} implementation on just
the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones.
Although this symbol is used only internally, the non-LFS version
still need to be build due the non-LFS getdirentries which requires
its semantic.
The non-LFS default implementation now uses the wordsize-32 as base
which uses getdents64 syscall plus adjustment for overflow (it allows
to use the same code for architectures that does not support non-LFS
getdents syscall). It has two main differences to wordsize-32 one:
- DIRENT_SET_DP_INO is added to handle alpha requirement to zero
the padding.
- alloca is removed by allocating a bounded temporary buffer (it
increases stack usage by roughly 276 bytes).
The default implementation handle the Linux requirements:
* getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0.
* getdents64 is always built and aliased to getdents for ABIs
that define _DIRENT_MATCHES_DIRENT64 to 1.
* A compat symbol is added for getdents64 for ABI that used to
export the old non-LFS version.
Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and
powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/getdents.c: Add comments with alpha
requirements.
(_DIRENT_MATCHES_DIRENT64): Undef
* sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file.
* sysdeps/unix/sysv/linux/generic/getdents.c: Likewise.
* sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise.
* sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by
use getdents64 syscalls as base.
* sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility
symbol if required.
* sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c
(__get_clockfreq_via_proc_openprom): Use __getdents64.
* sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
This patch consolidates all Linux sigaction implementations on the default
sysdeps/unix/sysv/linux/sigaction.c. The idea is remove redundant code
and simplify new ports addition by following the current generic
Linux User API (UAPI).
The UAPI for new ports defines a generic extensible sigaction struct as:
struct sigaction
{
__sighandler_t sa_handler;
unsigned long sa_flags;
#ifdef SA_RESTORER
void (*sa_restorer) (void);
#endif
sigset_t sa_mask;
};
Where SA_RESTORER is just placed for compatibility reasons (news ports
should not add it). A similar definition is used on generic
kernel_sigaction.h.
The user exported sigaction definition is not changed, so for most
architectures it requires an adjustment to kernel expected one for the
syscall.
The main changes are:
- All architectures now define and use a kernel_sigaction struct meant
for the syscall, even for the architectures where the user sigaction
has the same layout of the kernel expected one (s390-64 and ia64).
Although it requires more work for these architectures, it simplifies
the generic implementation. Also, sigaction is hardly a hotspot where
micro optimization would play an important role.
- The generic kernel_sigaction definition is now aligned with expected
UAPI one for newer ports, where SA_RESTORER and sa_restorer are not
expected to be defined. This means adding kernel_sigaction for
current architectures that does define it (m68k, nios2, powerpc, s390,
sh, sparc, and tile) and which rely on previous generic definition.
- Remove old MIPS usage of sa_restorer. This was removed since 2.6.27
(2957c9e61ee9c - "[MIPS] IRIX: Goodbye and thanks for all the fish").
- The remaining arch-specific sigaction.c are to handle ABI idiosyncrasies
(like SPARC kernel ABI for rt_sigaction that requires an additional
stub argument).
So for new ports the generic implementation should work if its uses
Linux UAPI. If SA_RESTORER is still required (due some architecture
limitation), it should define its own kernel_sigaction.h, define it and
include generic header (assuming it still uses the default generic kernel
layout).
Checked on x86_64-linux-gnu, i686-linux-gnu, arm-linux-gnueabihf,
aarch64-linux-gnu, sparc64-linux-gnu, sparcv9-linux-gnu, powerpc-linux-gnu,
powerpc64-linux-gnu, ia64-linux-gnu and alpha-linux-gnu. I also checked the
build on all remaining affected ABIs.
* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Use default Linux version
as base implementation.
* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h: Add include guards,
remove unrequired definitions and update comments.
* sysdeps/unix/sysv/linux/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel_sigaction.h: New file.
* sysdeps/unix/sysv/linux/m68k/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/kernel_sigaction: Likewise.
* sysdeps/unix/sysv/linux/s390/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/sh/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/tile/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigaction.c: Remove file.
* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sigaction.c: Add STUB, SET_SA_RESTORER,
and RESET_SA_RESTORER hooks.
On Alpha, the register $at is, by default, reserved for use by the
assembler, in the expansion of pseudo-instructions. It's also used
by the special calling convention for _mcount. We get warnings from
Alpha clone.S because the code to call _mcount isn't properly marked
up to tell the assembler not to use $at itself.
* sysdeps/unix/sysv/linux/alpha/clone.s (__clone): Wrap manual
uses of $at in .set noat / .set at.
This patch refactors the ARCH_FORK macro and the required architecture
specific header to simplify the required architecture definitions
to provide the fork syscall semantic and proper document current
Linux clone ABI variant.
Instead of require the reimplementation of arch-fork.h header, this
patch changes the ARCH_FORK to an inline function with clone ABI
defined by kernel-features.h define. The generic kernel ABI meant
for newer ports is used as default and redefine if the architecture
requires.
Checked on x86_64-linux-gnu and i686-linux-gnu. Also with a build
for all the afected ABIs.
* sysdeps/nptl/fork.c (ARCH_FORK): Replace by auch_fork.
* sysdeps/unix/sysv/linux/alpha/arch-fork.h: Remove file.
* sysdeps/unix/sysv/linux/riscv/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/aarch64/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/arm/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/i386/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/microblaze/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/mips/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/s390/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/sh/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/tile/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/arch-fork.h (arch_fork): New function.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h: New file.
* sysdeps/unix/sysv/linux/riscv/kernel-features.h: Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_CLONE_BACKWARDS): Define.
* sysdeps/unix/sysv/linux/createthread.c (ARCH_CLONE): Define to
__clone2 if __NR_clone2 is defined.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
(__ASSUME_CLONE_BACKWARDS): Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_CLONE_BACKWARDS): Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
(__ASSUME_CLONE2): Likewise.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_CLONE_BACKWARDS3): Likewise.
* sysdeps/unix/sysv/linux/kernel-features.h: Document possible clone
variants and the define architecture can use.
(__ASSUME_CLONE_DEFAULT): Define as default.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
(__ASSUME_CLONE_BACKWARDS): Likewise.
* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
(__ASSUME_CLONE_BACKWARDS): Likewise.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
(__ASSUME_CLONE_BACKWARDS2): Likewise.
This patch adds the narrowing add functions from TS 18661-1 to glibc's
libm: fadd, faddl, daddl, f32addf64, f32addf32x, f32xaddf64 for all
configurations; f32addf64x, f32addf128, f64addf64x, f64addf128,
f32xaddf64x, f32xaddf128, f64xaddf128 for configurations with
_Float64x and _Float128; __nldbl_daddl for ldbl-opt. As discussed for
the build infrastructure patch, tgmath.h support is deliberately
deferred, and FP_FAST_* macros are not applicable without optimized
function implementations.
Function implementations are added for all relevant pairs of formats
(including certain cases of a format and itself where more than one
type has that format). The main implementations use round-to-odd, or
a trivial computation in the case where both formats are the same or
where the wider format is IBM long double (in which case we don't
attempt to be correctly rounding). The sysdeps/ieee754/soft-fp
implementations use soft-fp, and are used automatically for
configurations without exceptions and rounding modes by virtue of
existing Implies files. As previously discussed, optimized versions
for particular architectures are possible, but not included.
i386 gets a special version of f32xaddf64 to avoid problems with
double rounding (similar to the existing fdim version), since this
function must round just once without an intermediate rounding to long
double. (No such special version is needed for any other function,
because the nontrivial functions use round-to-odd, which does the
intermediate computation with the rounding mode set to round-to-zero,
and double rounding is OK except in round-to-nearest mode, so is OK
for that intermediate round-to-zero computation.) mul and div will
need slightly different special versions for i386 (using round-to-odd
on long double instead of precision control) because of the
possibility of inexact intermediate results in the subnormal range for
double.
To reduce duplication among the different function implementations,
math-narrow.h gets macros CHECK_NARROW_ADD, NARROW_ADD_ROUND_TO_ODD
and NARROW_ADD_TRIVIAL.
In the trivial cases and for any architecture-specific optimized
implementations, the overhead of the errno setting might be
significant, but I think that's best handled through compiler built-in
functions rather than providing separate no-errno versions in glibc
(and likewise there are no __*_finite entry points for these function
provided, __*_finite effectively being no-errno versions at present in
most cases).
Tested for x86_64 and x86, with both GCC 6 and GCC 7. Tested for
mips64 (all three ABIs, both hard and soft float) and powerpc with GCC
7. Tested with build-many-glibcs.py with both GCC 6 and GCC 7.
* math/Makefile (libm-narrow-fns): Add add.
(libm-test-funcs-narrow): Likewise.
* math/Versions (GLIBC_2.28): Add narrowing add functions.
* math/bits/mathcalls-narrow.h (add): Use __MATHCALL_NARROW .
* math/gen-auto-libm-tests.c (test_functions): Add add.
* math/math-narrow.h (CHECK_NARROW_ADD): New macro.
(NARROW_ADD_ROUND_TO_ODD): Likewise.
(NARROW_ADD_TRIVIAL): Likewise.
* sysdeps/ieee754/float128/float128_private.h (__faddl): New
macro.
(__daddl): Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fadd and
dadd.
(CFLAGS-nldbl-dadd.c): New variable.
(CFLAGS-nldbl-fadd.c): Likewise.
* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
__nldbl_daddl.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_daddl): New
prototype.
* manual/arith.texi (Misc FP Arithmetic): Document fadd, faddl,
daddl, fMaddfN, fMaddfNx, fMxaddfN and fMxaddfNx.
* math/auto-libm-test-in: Add tests of add.
* math/auto-libm-test-out-narrow-add: New generated file.
* math/libm-test-narrow-add.inc: New file.
* sysdeps/i386/fpu/s_f32xaddf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_f32xaddf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_fadd.c: Likewise.
* sysdeps/ieee754/float128/s_f32addf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64addf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64xaddf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_daddl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_f64xaddf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_faddl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_daddl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_faddl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_daddl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_faddl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-dadd.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-fadd.c: Likewise.
* sysdeps/ieee754/soft-fp/s_daddl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fadd.c: Likewise.
* sysdeps/ieee754/soft-fp/s_faddl.c: Likewise.
* sysdeps/powerpc/fpu/libm-test-ulps: Update.
* sysdeps/mach/hurd/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
Fix the RLIM_INFINITY and RLIM64_INFINITY constants on alpha to match
the kernel one and all other architectures. Change the getrlimit,
getrlimit64, setrlimit, setrlimit64 into old compat symbols, and provide
the Linux generic functions as GLIBC_2_27 version.
Changelog:
* sysdeps/unix/sysv/linux/getrlimit64.c [USE_VERSIONED_RLIMIT]: Do not
define getrlimit and getrlimit64 as weak aliases of __getrlimit64.
Define __GI_getrlimit64 as weak alias of __getrlimit64.
[__RLIM_T_MATCHES_RLIM64_T]: Do not redefine SHLIB_COMPAT, use #elif
instead.
* sysdeps/unix/sysv/linux/setrlimit64.c [USE_VERSIONED_RLIMIT]: Do not
define setrlimit and setrlimit64 as weak aliases of __setrlimit64.
* sysdeps/unix/sysv/linux/alpha/bits/resource.h (RLIM_INFINITY,
RLIM64_INFINITY): Fix values to match the kernel ones.
* sysdeps/unix/sysv/linux/alpha/getrlimit64.c: Define
USE_VERSIONED_RLIMIT. Rename __getrlimit64 into __old_getrlimit64 and
provide it as getrlimit@@GLIBC_2_0 and getrlimit64@@GLIBC_2_1. Add a
__getrlimit64 function and provide it as getrlimit@@GLIBC_2_27 and
getrlimit64@@GLIBC_2_27.
* sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Ditto with setrlimit
and setrlimit64.
* sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.27): Add
getrlimit, setrlimit, getrlimit64 and setrlimit64.
* sysdeps/unix/sysv/linux/alpha/Versions (libc): Add getrlimit,
setrlimit, getrlimit64 and setrlimit64.
RLIM64_INFINITY was supposed to be a glibc convention rather than
anything seen by the kernel, but it ended being passed to the kernel
through the prlimit64 syscall.
* On the kernel side, the value is defined for the prlimit64 syscall for
all architectures in include/uapi/linux/resource.h:
#define RLIM64_INFINITY (~0ULL)
* On the kernel side, the value is defined for getrlimit and setrlimit
in arch/alpha/include/uapi/asm/resource.h
#define RLIM_INFINITY 0x7ffffffffffffffful
* On the GNU libc side, the value is defined in
sysdeps/unix/sysv/linux/alpha/bits/resource.h:
# define RLIM64_INFINITY 0x7fffffffffffffffLL
This was not an issue until the getrlimit and setrlimit glibc functions
have been changed in commit 045c13d185 ("Consolidate Linux setrlimit and
getrlimit implementation") to use the prlimit64 syscall instead of the
getrlimit and setrlimit ones.
This patch fixes that by adding a wrapper to fix the value passed to or
received from the kernel, before or after calling the prlimit64 syscall.
Changelog:
[BZ #22648]
* sysdeps/unix/sysv/linux/alpha/getrlimit64.c: New file.
* sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Ditto.
This patch continues filling out TS 18661-3 support by adding *f64 and
*f32x function aliases, supporting _Float64 and _Float32x, as aliases
for double functions. These types are supported for all glibc
configurations. The API corresponds exactly to that for _Float128 and
_Float64x. _Float32 aliases to float functions remain to be added in
subsequent patches to complete this process (then there are a few
miscellaneous functions in TS 18661-3 to implement that aren't simply
versions of existing functions for new types).
The patch enables the feature in bits/floatn-common.h, adds symbol
versions and documentation with updates to ABI baselines, and arranges
for the libm functions for the new types to be tested. As with the
_Float64x changes there are some x86 ulps updates because of header
inlines not used for the new types (and one other change to the
non-multiarch libm-test-ulps, which I suppose comes from using a
different compiler version / configuration from when it was last
regenerated).
Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.
* bits/floatn-common.h (__HAVE_FLOAT64): Define to 1.
(__HAVE_FLOAT32X): Likewise.
* manual/math.texi (Mathematics): Document support for _Float64
and _Float32x.
* math/Makefile (test-types): Add float64 and float32x.
* math/Versions (GLIBC_2.27): Add _Float64 and _Float32x
functions.
* stdlib/Versions (GLIBC_2.27): Likewise.
* wcsmbs/Versions (GLIBC_2.27): Likewise.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
This adds system call wrappers for pkey_alloc, pkey_free, pkey_mprotect,
and x86-64 implementations of pkey_get and pkey_set, which abstract over
the PKRU CPU register and hide the actual number of memory protection
keys supported by the CPU. pkey_mprotect with a -1 key is implemented
using mprotect, so it will work even if the kernel does not support the
pkey_mprotect system call.
The system call wrapers use unsigned int instead of unsigned long for
parameters, so that no special treatment for x32 is needed. The flags
argument is currently unused, and the access rights bit mask is limited
to two bits by the current PKRU register layout anyway.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch continues filling out TS 18661-3 support by adding *f64x
function aliases on platforms with _Float64x support. (It so happens
the set of such platforms is exactly the same as the set of platforms
with _Float128 support, although on x86_64, x86 and ia32 the _Float64x
format is Intel extended rather than binary128.) The API provided
corresponds exactly to that provided for _Float128, mostly coming from
TS 18661-3. As these functions always alias those for another type
(long double, _Float128 or both), __* function names are not provided,
as in other cases of alias types.
Given the preparation done in previous patches, this one just enables
the feature via Makeconfig and bits/floatn.h, adds symbol versions,
and updates documentation and ABI baselines. The symbol versions are
present unconditionally as GLIBC_2.27 in the relevant Versions files,
as it's OK for those to specify versions for functions that may not be
present in some configurations; no additional complexity is needed
unless in future some configuration gains support for this type that
didn't have such support in 2.27. The Makeconfig additions for ia64
and x86 aren't strictly needed, as those configurations also get
float64x-alias-fcts definitions from
sysdeps/ieee754/float128/Makeconfig, but still seem appropriate given
that _Float64x is not _Float128 for those configurations.
A libm-test-ulps update for x86 is included. This is because
bits/mathinline.h does not have _Float64x support added and for two
functions the use of out-of-line functions results in increased ulps
(ifloat64x shares ulps with ildouble / ifloat128 as appropriate).
Given that we'd like generally to eliminate bits/mathinline.h
optimizations, preferring to have such optimizations in GCC instead,
it seems reasonable not to add such support there for new types. GCC
support for _FloatN / _FloatNx built-in functions is limited, but has
been improved in GCC 8, and at some point I hope the full set of libm
built-in functions in GCC, and other optimizations with
per-floating-type aspects, will be enabled for all _FloatN / _FloatNx
types.
Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.
* sysdeps/ia64/Makeconfig (float64x-alias-fcts): New variable.
* sysdeps/ieee754/float128/Makeconfig (float64x-alias-fcts):
Likewise.
* sysdeps/ieee754/ldbl-128/Makeconfig (float64x-alias-fcts):
Likewise.
* sysdeps/x86/Makeconfig: New file.
* bits/floatn-common.h (__HAVE_FLOAT64X): Remove macro.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* bits/floatn.h (__HAVE_FLOAT64X): New macro.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/ia64/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/ieee754/ldbl-128/bits/floatn.h (__HAVE_FLOAT64X):
Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/mips/ieee754/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/powerpc/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/x86/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* manual/math.texi (Mathematics): Document support for _Float64x.
* math/Versions (GLIBC_2.27): Add _Float64x functions.
* stdlib/Versions (GLIBC_2.27): Likewise.
* wcsmbs/Versions (GLIBC_2.27): Likewise.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
The system call is somewhat obscure because it is closely related
to file descriptor sealing. However, it is also the recommended
way to create alias mappings, which is why it has more general use.
No emulation is provided. Except for the name of the
/proc/self/fd links, it would be possible to implement an
approximation using O_TMPFILE and tmpfs, but this does not appear
to be worth the added complexity.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
Verify that sizes, alignments and field offsets of jmp_buf as well as
sigjmp_buf are unchanged regardless how struct __jmp_buf_tag is defined.
Since jmp_buf is target specific, jmp_buf-macros.h is added for each
Linux target. A new target must provides its own jmp_buf-macros.h.
TODO: Hurd needs to provide a jmp_buf-macros.h.
Tested with build-many-glibcs.py.
* include/setjmp.h [!_ISOMAC]: Include <stddef.h> and
<jmp_buf-macros.h>.
[!_ISOMAC] (STR_HELPER): New.
[!_ISOMAC] (STR): Likewise.
[!_ISOMAC] (TEST_SIZE): Likewise.
[!_ISOMAC] (TEST_ALIGN): Likewise.
[!_ISOMAC] (TEST_OFFSET): Likewise.
[!_ISOMAC] Add _Static_assert to check sizes, alignments and
field offsets of jmp_buf as well as sigjmp_buf.
* sysdeps/unix/sysv/linux/aarch64/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/arm/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/i386/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/microblaze/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/jmp_buf-macros.h:
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/jmp_buf-macros.h:
Likewise.
* sysdeps/unix/sysv/linux/nios2/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/jmp_buf-macros.h:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/jmp_buf-macros.h:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/sh/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/jmp_buf-macros.h:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/jmp_buf-macros.h:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/jmp_buf-macros.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/jmp_buf-macros.h: Likewise.
This patch adds support for *f128 function aliases on platforms where
long double has the binary128 format (and thus GCC 7 provides the
_Float128 type with the same ABI as long double but as a distinct type
in terms of C type compatibility). This is the same API as provided
in glibc 2.26 for powerpc64le / x86_64 / x86 / ia64 where _Float128
has a different format from long double, with the bulk of the API
coming from TS 18661-3. All the functions alias the corresponding
long double functions, and __* function names are not provided since
those are only needed once for each floating-point format, not more
than once for different types with the same format (so for example,
-ffinite-math-only maps foof128 to __fool_finite, while type-generic
macros end up calling e.g. __issignalingl for _Float128 arguments on
such platforms).
The preparation for this feature was done in previous patches, so this
one just needs to add the relevant makefile and header definitions,
and update macro definitions of libm_alias_ldouble_other_r, to turn on
the feature, and update documentation and ABI baselines.
Tested (a) for x86_64, (b) for aarch64, (c) with build-many-glibcs.py
with both GCC 6 and GCC 7.
* sysdeps/ieee754/ldbl-128/Makeconfig: New file.
* sysdeps/ieee754/ldbl-128/bits/floatn.h: Likewise.
* sysdeps/ieee754/ldbl-128/float128-abi.h: Likewise.
* sysdeps/generic/libm-alias-ldouble.h: Include <bits/floatn.h>.
[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128]
(libm_alias_ldouble_other_r): Also create _Float128 alias.
* sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h: Include
<bits/floatn.h>.
[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128]
(libm_alias_ldouble_other_r): Also create _Float128 alias.
* manual/math.texi (Mathematics): Document additional architecture
support for _Float128.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
Current GLIBC has two ways to implement the single thread optimization
on syscalls to avoid calling the cancellation path: either by using
global variables (__{libc,pthread}_multiple_thread) or by accessing
the TCB field (defined by TLS_MULTIPLE_THREADS_IN_TCB). Both the
variables and the macros to acces its value are defined in the
architecture sysdep-cancel.h header.
This patch consolidates its definition on only one header,
sysdeps/unix/sysv/linux/sysdep-cancel.h, and adds a new define
(SINGLE_THREAD_BY_GLOBAL) which the architecture defines if it prefer
to use the global variables instead of the TCB field. This is an
optimization, so if the architecture does not define it, the TCB
method will be used as default.
Checked on x86_64-linux-gnu and on a build with major touched
ABIs (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
hppa-linux-gnu, i686-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu,
mips-linux-gnu, mips64-linux-gnu, powerpc-linux-gnu,
powerpc64le-linux-gnu, s390-linux-gnu, s390x-linux-gnu, sh4-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, tilegx-linux-gnu).
* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Remove file.
* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
(SINGLE_THREAD_BY_GLOBAL): Define.
* sysdeps/unix/sysv/linux/aarch64/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
Likewise.
* sysdeps/unix/sysv/linux/alpha/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
Likewise.
* sysdeps/unix/sysv/linux/microblaze/sysdep.h
(SINGLE_THREAD_BY_GLOBAL): Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
Likewise.
This patch follows commit 5554304f0 (posix: Allow glob to match dangling
symlinks [BZ #866]) by adding a compat symbol that follow previous
semantic of not following dangling symlinks and thus avoiding call
gl_lstat with GLOB_ALTDIRFUNC.
It avoids failure with old binaries that not set the alternate function
pointer for lstat (GNUmake for instance). The following scenario, for
instance, fails with current GNUmake because glibc will access unitialized
memory when calling gl_lstat:
$ cat src/t/t.c
int main ()
{
return 0;
}
$ cat Makefile
SRC = $(wildcard src/*/t.c)
OBJ = $(patsubst src/%.c, obj/%.o, $(SRC))
prog: $(OBJ)
$(CC) $(CFLAGS) $(LDFLAGS) $(LIBS) $(OBJ) -o prog
obj/%.o: src/%.c
$(CC) $(CFLAGS) -c $< -o $@
$ make
This works as expected with the patch applied. Since it is for generic
ABI, default compat symbols are added with override for Linux due LFS.
Now we have two compat symbols for glob on Linux:
1. sysdeps/unix/sysv/linux/oldglob.c which implements glob64 with
the old dirent layout. For this implementation I also set it to
not follow dangling symlinks (which is the safest path).
2. sysdeps/unix/sysv/linux/glob{64}-lstat-compat.c which implements
the compat symbol for dangling symlinks. As for generic glob,
the implementation uses XSTAT_IS_XSTAT64 to define whether
both __glob_lstat_compat and __glob64_lstat_compat should be
different implementations. For archictures that define
XSTAT_IS_XSTAT64, __glob_lstat_compat is aliased to
__glob64_lstat_compat.
3. sysdeps/unix/sysv/linux/alpha/oldglob.c with a different glob_t
layout. As for 1. this patch changes it to not follow dangling
symlinks.
The patch also bumps _GNU_GLOB_INTERFACE_VERSION to 2 to advertise the
new semantic. On GNUmake, for instance, it will force to it use its
internal glob implementation instead and avoiding triggering the same
failure on builds against newer GLIBCs.
Checked on x86_64-linux-gnu and i686-linux-gnu. I also checked
with a build against the major ABIs required to check for the abilist.
The changes should also work on gnulib (I run gnulib-tool.py check glob
and it shown no regressions).
[BZ #22183]
* include/gnu-versions.h (_GNU_GLOB_INTERFACE_VERSION): Increase
version to 2.
* posix/Makefile (routines): Add glob-lstat-compat and
glob64-lstat-compat.
* posix/Versions (GLIBC_2.27, glob, glob64): Add symbol version.
* posix/glob-lstat-compat.c: New file.
* posix/glob64-lstat-compat.c: Likewise.
* posix/tst-glob_lstat_compat.c: Likewise.
* sysdeps/unix/sysv/linux/glob-lstat-compat.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/glob-lstat-compat.c: Likewise.
* sysdeps/unix/sysv/linux/glob64-lstat-compat.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/glob.c: Remove file.
* posix/glob.c (glob_lstat): New function.
(glob): Rename to __glob and add versioned symbol to 2.27.
(glob_in_dir): Use glob_lstat.
* posix/glob64.c (glob64): Add GLOB_ATTRIBUTE.
* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/glob.c (glob): Add versioned symbol for
2.27.
* sysdeps/unix/sysv/linux/glob64.c (glob64): Likewise.
* sysdeps/unix/sysv/linux/oldglob.c (GLOB_NO_LSTAT): Define.
* sysdeps/unix/sysv/linux/alpha/oldglob.c (__old_glob): Do not use
gl_lstat on glob call.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add GLIBC_2.27 glob
and glob64 symbols.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
Likewise.
* sysdeps/unix/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
This patch changes the expf and exp2f error handling semantics to only
set errno accoring to POSIX rules. New symbol version is introduced at
GLIBC_2.27.
The old wrappers are kept for compat symbols.
Internal calls to __expf now get the new error semantics, this seems to
only affect sysdeps/i386/fpu/s_expm1f.S where the errno-only behaviour
should be correct.
ia64 needed assembly change to have the new and compat versioned symbol
map to the same function.
All linux libm abilists are updated.
* math/Versions (expf): New libm symbol at GLIBC_2.27.
(exp2f): Likewise.
* math/w_exp2f.c: New file.
* math/w_expf.c: New file.
* math/w_exp2f_compat.c (__exp2f_compat): For compat symbol only.
* math/w_expf_compat.c (__expf_compat): Likewise.
* sysdeps/ia64/fpu/e_exp2f.S: Add versioned symbols.
* sysdeps/ia64/fpu/e_expf.S: Likewise.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
This patch fixes the compat glob implementation consolidation from
commit 116f1c64d with the following changes:
- Add a compat implementation on s390 to avoid the architecture
to build the symbols on default linux oldglob.c by setting
GLOB_NO_OLD_VERSION.
- Remove the duplicate rule to build oldglob on alpha.
Checked on s390-linux-gnu and alpha-linux-gnu using build-many-glibc.py.
* sysdeps/unix/sysv/linux/s390/s390-32/oldglob.c: New file.
* sysdeps/unix/sysv/linux/alpha/Makefile
[$(subdir) = csu] (sysdep_routines): Remove rule.
This patch syncs posix/glob.c implementation with gnulib version
b5ec983 (glob: simplify symlink detection). The only difference
to gnulib code is
* DT_UNKNOWN, DT_DIR, and DT_LNK definition in the case there
were not already defined. Gnulib code which uses
HAVE_STRUCT_DIRENT_D_TYPE will redefine them wrongly because
GLIBC does not define HAVE_STRUCT_DIRENT_D_TYPE. Instead
the patch check for each definition instead.
Also, the patch requires additional globfree and globfree64 files
for compatibility version on some architectures. Also the code
simplification leads to not macro simplification (not need for
NO_GLOB_PATTERN_P anymore).
Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
for all major architectures.
[BZ #1062]
* posix/Makefile (routines): Add globfree, globfree64, and
glob_pattern_p.
* posix/flexmember.h: New file.
* posix/glob_internal.h: Likewise.
* posix/glob_pattern_p.c: Likewise.
* posix/globfree.c: Likewise.
* posix/globfree64.c: Likewise.
* sysdeps/gnu/globfree64.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/globfree.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c: Likewise.
* sysdeps/unix/sysv/linux/oldglob.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/globfree64.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/globfree.c: Likewise.
* sysdeps/wordsize-64/globfree.c: Likewise.
* sysdeps/wordsize-64/globfree64.c: Likewise.
* posix/glob.c (HAVE_CONFIG_H): Use !_LIBC instead.
[NDEBUG): Remove comments.
(GLOB_ONLY_P, _AMIGA, VMS): Remove define.
(dirent_type): New type. Use uint_fast8_t not
uint8_t, as C99 does not require uint8_t.
(DT_UNKNOWN, DT_DIR, DT_LNK): New macros.
(struct readdir_result): Use dirent_type. Do not define skip_entry
unless it is needed; this saves a byte on platforms lacking d_ino.
(readdir_result_type, readdir_result_skip_entry):
New functions, replacing ...
(readdir_result_might_be_symlink, readdir_result_might_be_dir):
these functions, which were removed. This makes the callers
easier to read. All callers changed.
(D_INO_TO_RESULT): Now empty if there is no d_ino.
(size_add_wrapv, glob_use_alloca): New static functions.
(glob, glob_in_dir): Check for size_t overflow in several places,
and fix some size_t checks that were not quite right.
Remove old code using SHELL since Bash no longer
uses this.
(glob, prefix_array): Separate MS code better.
(glob_in_dir): Remove old Amiga and VMS code.
(globfree, __glob_pattern_type, __glob_pattern_p): Move to
separate files.
(glob_in_dir): Do not rely on undefined behavior in accessing
struct members beyond their bounds. Use a flexible array member
instead
(link_stat): Rename from link_exists2_p and return -1/0 instead of
0/1. Caller changed.
(glob): Fix memory leaks.
* posix/glob64 (globfree64): Move to separate file.
* sysdeps/gnu/glob64.c (NO_GLOB_PATTERN_P): Remove define.
(globfree64): Remove hidden alias.
* sysdeps/unix/sysv/linux/Makefile (sysdeps_routines): Add
oldglob.
* sysdeps/unix/sysv/linux/alpha/glob.c (__new_globfree): Move to
separate file.
* sysdeps/unix/sysv/linux/i386/glob64.c (NO_GLOB_PATTERN_P): Remove
define.
Move compat code to separate file.
* sysdeps/wordsize-64/glob.c (globfree): Move definitions to
separate file.
The NO_CANCELLATION macro is used currently on generic headers to
define non cancellable syscalls and on Linux fcntl to implement the non
cancellable variation. Former should be single-handled by not-cancel.h
header and former could be simplified build both cancellable and non
cancellable for default objects and alias the non-cancellable to default
one for rtld ones (since Linux already support cancellation as default).
This patch thus removes the NO_CANCELLATION macro and its usage. The
generic non cancellable fcntl is route to internal fcntl.
Checked on x86_64-linux-gnu and i686-linux-gnu. Also checked with
a build again major ABIs.
* sysdeps/generic/not-cancel.h (NO_CANCELLATION): Remove macro.
* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
(NO_CANCELLATION): Likewise.
* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
(NO_CANCELLATION): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
(NO_CANCELLATION): Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (NO_CANCELLATION):
Likewise
* sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): Add
hidden prototype.
* sysdeps/unix/sysv/linux/fcntl.c (__fcntl_nocancel): Define only
for !IS_IN (rtld) and remove NO_CANCELLATION usage.
This patch completes the ucontext.h namespace fixes by fixing issues
related to the use of struct sigcontext as mcontext_t, and inclusion
of <bits/sigcontext.h> even when struct sigcontext is not so used.
Inclusion of <bits/sigcontext.h> by <sys/ucontext.h> is removed; the
way to get the sigcontext structure is by including <signal.h> (in a
context where __USE_MISC is defined); the sysdeps/generic version of
sys/ucontext.h keeps the inclusion by necessity, with a comment about
how this is not namespace-clean, but the only configuration that used
it, MicroBlaze, gets its own version of the header in this patch.
Where mcontext_t was typedefed to struct sigcontext, the contents of
struct sigcontext are inserted (with appropriate namespace handling to
prefix fields with __ when __USE_MISC is not defined); review should
check that this has been done correctly in each case, whether the
definition of struct sigcontext comes from glibc headers or from the
Linux kernel. This changes C++ name mangling on affected
architectures (which do not include x86_64/x86).
Tested for x86_64, and with build-many-glibcs.py.
2017-08-14 Joseph Myers <joseph@codesourcery.com>
[BZ #21457]
* sysdeps/arm/sys/ucontext.h: Do not include <bits/sigcontext.h>.
* sysdeps/generic/sys/ucontext.h: Add comment about use of struct
sigcontext and namespace requirements.
* sysdeps/i386/sys/ucontext.h: Do not include <bits/sigcontext.h>.
* sysdeps/m68k/sys/ucontext.h: Likewise.
* sysdeps/mips/sys/ucontext.h: Likewise. Include <bits/types.h>.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
(__ctx): Define earlier.
(mcontext_t): Define structure contents rather than using struct
sigcontext.
* sysdeps/unix/sysv/linux/aarch64/ucontext_i.sym (oEXTENSION): Use
__glibc_reserved1 instead of __reserved.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
(__ctx): Define earlier.
(mcontext_t): Define structure contents rather than using struct
sigcontext.
* sysdeps/unix/sysv/linux/alpha/ucontext-offsets.sym: Use
mcontext_t instead of struct sigcontext.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
(__ctx): Define earlier.
(mcontext_t): Define structure contents rather than using struct
sigcontext.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
(__ctx): Define earlier.
(mcontext_t): Define structure contents rather than using struct
sigcontext.
* sysdeps/unix/sysv/linux/ia64/makecontext.c (__makecontext): Use
mcontext_t instead of struct sigcontext.
* sysdeps/unix/sysv/linux/ia64/sigcontext-offsets.sym: Use
mcontext_t instead of struct sigcontext.
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
(__ctx): New macro.
(struct __ia64_fpreg_mcontext): New type.
(mcontext_t): Define structure contents rather than using struct
sigcontext.
(_SC_GR0_OFFSET): Use mcontext_t instead of struct sigcontext.
(uc_sigmask): Define using __ctx.
(uc_stack): Likewise.
* sysdeps/unix/sysv/linux/ia64/sys/procfs.h: Include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/ia64/sys/ptrace.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/microblaze/sys/ucontext.h: New file.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h: Do not include
<bits/sigcontext.h>.
(__ctx): Define earlier.
(mcontext_t): Define structure contents rather than using struct
sigcontext.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Do not include
<bits/sigcontext.h>. Include <bits/types.h>.
* conform/Makefile (test-xfail-XPG42/signal.h/conform): Remove.
(test-xfail-XPG42/sys/wait.h/conform): Likewise.
(test-xfail-XPG42/ucontext.h/conform): Likewise.
(test-xfail-UNIX98/signal.h/conform): Likewise.
(test-xfail-UNIX98/sys/wait.h/conform): Likewise.
(test-xfail-UNIX98/ucontext.h/conform): Likewise.
(test-xfail-XOPEN2K/signal.h/conform): Likewise.
(test-xfail-XOPEN2K/sys/wait.h/conform): Likewise.
(test-xfail-XOPEN2K/ucontext.h/conform): Likewise.
(test-xfail-POSIX2008/signal.h/conform): Likewise.
(test-xfail-POSIX2008/sys/wait.h/conform): Likewise.
(test-xfail-XOPEN2K8/signal.h/conform): Likewise.
(test-xfail-XOPEN2K8/sys/wait.h/conform): Likewise.
This commit separates allocating and raising exceptions. This
simplifies catching and re-raising them because it is no longer
necessary to make a temporary, on-stack copy of the exception message.
The standard members of ucontext_t, in all standard versions with that
type, are uc_link, uc_sigmask, uc_stack and uc_mcontext.
The uc_* namespace is mostly reserved for additions to the structure.
However, in XPG4.2, it's only reserved when <ucontext.h> is included,
not when <signal.h> is included, while <signal.h> is required to
define ucontext_t (but not allowed to make visible other symbols from
<ucontext.h>). Thus, nonstandard members should avoid uc_* names.
Some already do use __uc_*, but others don't; most architectures (all
except ia64, I think) have a member uc_flags and some have additional
members beyond that.
This patch makes nonstandard members have an __ prefix unless
__USE_MISC is defined. Members whose names indicate they are solely
padding / reserved for future use are renamed unconditionally to use
the __glibc_reserved1 naming convention.
This is part of the preparation for a revised version of the
mcontext_t / sigcontext patch to be able to eliminate all 13 of the
miscellaneous XFAILs in conform/Makefile, rather than only 11 of them
as at present (at least one further fix on top of this one will be
needed for that as well).
Tested for x86_64, and with build-many-glibcs.py.
[BZ #21457]
* sysdeps/arm/sys/ucontext.h (__ctx): Move undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/generic/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/i386/sys/ucontext.h (__ctx): Move undefine further down.
(__ctxt): Likewise.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/m68k/sys/ucontext.h (__ctx): Move undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/mips/sys/ucontext.h (__ctx): Move undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (__ctx): New
macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags and uc_regspace.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags. Rename uc_filler to
__glibc_reserved1.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h (ucontext_t): Use
__ctx with uc_flags, uc_regs_ptr, uc_regs and uc_reg_space.
Rename uc_pad to __glibc_reserved1.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h (__ctx): Move
undefine further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h (__ctx): Move undefine
further down.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h (ucontext_t): Use
__ctx with uc_flags.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h (__ctx): New macro.
(ucontext_t): Use __ctx with uc_flags.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h (ucontext_t): Use
__ctx with uc_flags.
For XPG4.2, sa_sigaction, SA_ONSTACK, SA_RESETHAND, SA_RESTART and
SA_NODEFER should be defined in signal.h, but they are only defined
for other standards at present.
This patch fixes the various bits/sigaction.h headers accordingly.
All the fixes are essentially the same, except those for SPARC and
Tile.
For SPARC, the header (a) spuriously defined various nonstandard
macros for __USE_UNIX98 || defined __USE_XOPEN2K8 and (b) defined some
standard macros as aliases of nonstandard ones instead of the other
way round. This patch fixes the SPARC header to handle these macros
the same way and with the same conditions as those for other
architectures, so the standard macros are the primary ones and the
other ones are defined only for __USE_MISC and are aliases of the
standard ones where applicable.
For Tile, the header spuriously defined the nonstandard macro
SA_NOPTRACE for __USE_UNIX98 || defined __USE_XOPEN2K8; this is moved
to __USE_MISC.
(Those nonstandard macros are in a reserved namespace, but it seems
desirable to be consistent between architectures as far as possible,
and so not define them in standard modes anywhere.)
Tested for x86_64, and with build-many-glibcs.py.
[BZ #21899]
* bits/sigaction.h (struct sigaction): Define sa_handler and
sa_sigaction using union also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/mips/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/s390/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise. Define directly rather than as alias.
(SA_RESETHAND): Likewise.
(SA_INTERRUPT): Define only for [__USE_MISC].
(SA_NOMASK): Define as alias of SA_NODEFER, only for [__USE_MISC].
(SA_ONESHOT): Define as alias of SA_RESETHAND, only for
[__USE_MISC].
(SA_STACK): Define only for [__USE_MISC].
* sysdeps/unix/sysv/linux/tile/bits/sigaction.h
(struct sigaction): Define sa_handler and sa_sigaction using union
also for [__USE_XOPEN_EXTENDED].
(SA_ONSTACK): Change [__USE_UNIX98] condition to
[__USE_XOPEN_EXTENDED].
(SA_RESTART): Likewise.
(SA_NODEFER): Likewise.
(SA_RESETHAND): Likewise.
(SA_NOPTRACE): Define only for [__USE_MISC].
This patch fixes the argument passing for exit syscall after
the clone function returns on hppa. This fixes misc/tst-clone2
on alpha-linux-gnu.
Checked misc/tst-clone2 on alpha-linux-gnu.
[BZ #21512]
* sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Fix argument
passing to syscall exit.
The ucontext_t type has a tag struct ucontext. As with previous such
issues for siginfo_t and stack_t, this tag is not permitted by POSIX
(is not in a reserved namespace), and so namespace conformance means
breaking C++ name mangling for this type.
In this case, the type does need to have some tag rather than just a
typedef name, because it includes a pointer to itself. This patch
uses struct ucontext_t as the new tag, so the type is mangled as
ucontext_t (the POSIX *_t reservation applies in all namespaces, not
just the namespace of ordinary identifiers). Another reserved name
such as struct __ucontext could of course be used.
Because of other namespace issues, this patch does not by itself fix
bug 21457 or allow any XFAILs to be removed.
Tested for x86_64, and with build-many-glibcs.py.
[BZ #21457]
* sysdeps/arm/sys/ucontext.h (struct ucontext): Rename to struct
ucontext_t.
* sysdeps/generic/sys/ucontext.h (struct ucontext): Likewise.
* sysdeps/i386/sys/ucontext.h (struct ucontext): Likewise.
* sysdeps/m68k/sys/ucontext.h (struct ucontext): Likewise.
* sysdeps/mips/sys/ucontext.h (struct ucontext): Likewise.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (struct
ucontext): Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h (struct
ucontext): Likewise.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h (struct ucontext):
Likewise.
* sysdeps/powerpc/powerpc32/backtrace.c (struct
rt_signal_frame_32): Likewise.
* sysdeps/powerpc/powerpc64/backtrace.c (struct signal_frame_64):
Likewise.
* sysdeps/unix/sysv/linux/aarch64/kernel_rt_sigframe.h (struct
kernel_rt_sigframe): Likewise.
* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h (SIGCONTEXT):
Likewise.
* sysdeps/unix/sysv/linux/arm/register-dump.h (register_dump):
Likewise.
* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h (SIGCONTEXT):
Likewise.
* sysdeps/unix/sysv/linux/hppa/profil-counter.h
(__profil_counter): Likewise.
* sysdeps/unix/sysv/linux/microblaze/sigcontextinfo.h
(SIGCONTEXT): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel_rt_sigframe.h (struct
kernel_rt_sigframe): Likewise.
* sysdeps/unix/sysv/linux/nios2/kernel_rt_sigframe.h (struct
kernel_rt_sigframe): Likewise.
* sysdeps/unix/sysv/linux/nios2/sigcontextinfo.h (SIGCONTEXT):
Likewise.
* sysdeps/unix/sysv/linux/sh/makecontext.S (__makecontext):
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/makecontext.c
(__start_context): Likewise.
* sysdeps/unix/sysv/linux/tile/sigcontextinfo.h (SIGCONTEXT):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/register-dump.h (register_dump):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigcontextinfo.h (SIGCONTEXT):
Likewise.
On aarch64, alpha, arm, hppa, mips, nios2, powerpc, sh, sparc, tile,
and x86_64 the clone syscall jumps to _exit after the child execution
and the function ends the process execution by calling exit_group.
This behavior have a small issue where threads created with
CLONE_THREAD using clone syscall directly will eventually exit the
whole group altogether instead of just the thread created. Also,
s390, microblaze, ia64, i386, and m68k differs by calling exit
syscall directly.
This patch changes all architectures to call the exit syscall
directly, as for s390, microblaze, ia64, i386, and m68k. This do not
have change glibc internal behavior in any sort, since the only
usage of clone implementation in posix_spawn calls _exit directly
in the created child (fork uses a direct call to clone).
Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
powerpc-linux-gnu, powerpc64le-linux-gnu, sparc64-linux-gnu,
and sparcv9-linux-gnu.
[BZ #21512]
* sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Call exit
syscall instead of jump to _exit.
(CLONE_VM_BIT): Remove unused define.
(CLONE_VM): Likewise.
(CLONE_THREAD_BIT): Likewise.
(CLONE_THREAD): Likewise.
* sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
* sysdeps/unix/sysv/linux/arm/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
(CLONE_THREAD): Likewise.
* sysdeps/unix/sysv/linux/i386/clone.S (CLONE_VM): Likewise.
* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Call exit
syscall instead of jump to _exit.
* sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Likewise.
* sysdeps/unix/sysv/linux/mips/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
(CLONE_THREAD): Likewise.
* sysdeps/unix/sysv/linux/nios2/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone):
Likewise.
(CLONE_VM): Remove unused define.
(CLONE_THREAD): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone):
Likewise.
(CLONE_VM): Remove unused define.
(CLONE_THREAD): Likewise.
* sysdeps/unix/sysv/linux/sh/clone.S (__clone): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
* sysdeps/unix/sysv/linux/tile/clone.S (__clone): Likewise.
* sysdeps/unix/sysv/linux/x86_64/clone.S (__clone): Likewise.
(CLONE_VM): Remove unused define.
* sysdeps/unix/sysv/linux/Makefile (tests): Add tst-clone3.
* sysdeps/unix/sysv/linux/tst-clone3.c: New file.
Fix
Many of the things defined by bits/signum.h are invariant across all
supported operating systems. This patch factors out all of them to a
new header bits/signum-generic.h, which each bits/signum.h will include
and then override whichever things need adjustment. Normally that will
mean, at most, adding or changing a few signal numbers.
A user-visible side effect is that the obsolete signal constant SIGUNUSED
(which is an alias for SIGSYS on all platforms that define it) is no
longer exposed by any version of bits/signum.h.
A side effect only relevant to glibc hackers is that _NSIG is now defined
in terms of __SIGRTMAX, instead of the other way around. This is because
__SIGRTMAX varies from platform to platform, but _NSIG==__SIGRTMAX+1 is
true universally. If your platform doesn't support realtime signals,
leave __SIGRTMAX equal to __SIGRTMIN.
I also added a Linux-specific test to make sure that our signal constants
match the ones in <asm/signal.h>, since we can't use that header (it's
not even vaguely namespace-clean).
* bits/signum-generic.h: Renamed from bits/signum.h.
Add proper multiple include guard and misuse check.
Define __SIGRTMIN = __SIGRTMAX = 32, and define _NSIG = __SIGRTMAX+1.
Move definition of SIGIO to "archaic names for compatibility" section.
* bits/signum.h: New file which just includes bits/signum-generic.h.
* sysdeps/unix/bsd/bits/signum.h
* sysdeps/unix/sysv/linux/bits/signum.h
* sysdeps/unix/sysv/linux/alpha/bits/signum.h
* sysdeps/unix/sysv/linux/hppa/bits/signum.h
* sysdeps/unix/sysv/linux/mips/bits/signum.h
* sysdeps/unix/sysv/linux/sparc/bits/signum.h
Just include <bits/signum-generic.h> and then add or adjust
signal constants. Do not define SIGUNUSED, SIGRTMIN, or SIGRTMAX.
* signal/Makefile: Install bits/signum-generic.h.
* signal/signal.h: Define SIGRTMIN and SIGRTMAX here.
* sysdeps/generic/siglist.h: SIGSYS and SIGWINCH are
universal. Prefer SIGPOLL to SIGIO. Simplify #ifdeffage.
* sysdeps/unix/sysv/linux/tst-signal-numbers.sh: New test.
* sysdeps/unix/sysv/linux/Makefile: Run it.
Some older standards (XPG4.2 through POSIX.1:2001, XSI only) require
sys/wait.h to include the definition of struct rusage. This is
missing in glibc.
This patch adds the required definition. struct rusage is moved to a
new header bits/types/struct_rusage.h to avoid bringing in the whole
of sys/resource.h (although the standards in question do allow the
whole of sys/resource.h to be brought in). In the five
bits/resource.h headers, the only variation between the definitions of
struct rusage is that the sysdeps/unix/sysv/linux version is prepared
for x32 (by having anonymous unions with __syscall_slong_t fields) and
the others are not. Thus, this version is suitable for use
generically (everything other than x32 simply has __syscall_slong_t
the same as long int, so there are no API or ABI changes involved, and
anonymous unions are already a required language feature for glibc
headers elsewhere), and this patch uses it as a base for the single
implementation of bits/types/struct_rusage.h.
Tested for x86_64, and with build-many-glibcs.py.
[BZ #21575]
* resource/bits/types/struct_rusage.h: New file.
* include/bits/types/struct_rusage.h: Likewise.
* bits/resource.h (struct rusage): Include
<bits/types/struct_rusage.h> instead of defining here.
* sysdeps/unix/sysv/linux/bits/resource.h (struct rusage):
Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/resource.h (struct rusage):
Likewise.
* sysdeps/unix/sysv/linux/mips/bits/resource.h (struct rusage):
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/resource.h (struct rusage):
Likewise.
* resource/Makefile (headers): Add bits/types/struct_rusage.h.
* posix/sys/wait.h [__USE_XOPEN_EXTENDED && !__USE_XOPEN2K8]:
Include <bits/types/struct_rusage.h>
This is fairly complicated, not because the users of __need_Emath and
__need_error_t have complicated requirements, but because the core
changes had a lot of fallout.
__need_error_t exists for gnulib compatibility in argz.h and argp.h.
error_t itself is a Hurdism, an enum containing all the E-constants,
so you can do 'p (error_t) errno' in gdb and get a symbolic value.
argz.h and argp.h use it for function return values, and they want to
fall back to 'int' when that's not available. There is no reason why
these nonstandard headers cannot just go ahead and include all of
errno.h; so we do that.
__need_Emath is defined only by .S files; what they _really_ need is
for errno.h to avoid declaring anything other than the E-constants
(e.g. 'extern int __errno_location(void);' is a syntax error in
assembly language). This is replaced with a check for __ASSEMBLER__ in
errno.h, plus a carefully documented requirement for bits/errno.h not
to define anything other than macros. That in turn has the
consequence that bits/errno.h must not define errno - fortunately, all
live ports use the same definition of errno, so I've moved it to
errno.h. The Hurd bits/errno.h must also take care not to define
error_t when __ASSEMBLER__ is defined, which involves repeating all of
the definitions twice, but it's a generated file so that's okay.
* stdlib/errno.h: Remove __need_Emath and __need_error_t logic.
Reorganize file. Declare errno here. When __ASSEMBLER__ is
defined, don't declare anything other than the E-constants.
* include/errno.h: Change conditional for exposing internal
declarations to (not _ISOMAC and not __ASSEMBLER__).
* bits/errno.h: Remove logic for __need_Emath. Document
requirements for a port-specific bits/errno.h.
* sysdeps/unix/sysv/linux/bits/errno.h
* sysdeps/unix/sysv/linux/alpha/bits/errno.h
* sysdeps/unix/sysv/linux/hppa/bits/errno.h
* sysdeps/unix/sysv/linux/mips/bits/errno.h
* sysdeps/unix/sysv/linux/sparc/bits/errno.h:
Add multiple-include guard and check against improper inclusion.
Remove __need_Emath logic. Don't declare errno here. Ensure all
constants are defined as simple integer literals. Consistent
formatting.
* sysdeps/mach/hurd/errnos.awk: Likewise. Only define error_t and
enum __error_t_codes if __ASSEMBLER__ is not defined.
* sysdeps/mach/hurd/bits/errno.h: Regenerate.
* argp/argp.h, string/argz.h: Don't define __need_error_t before
including errno.h.
* sysdeps/i386/i686/fpu/multiarch/s_cosf-sse2.S
* sysdeps/i386/i686/fpu/multiarch/s_sincosf-sse2.S
* sysdeps/i386/i686/fpu/multiarch/s_sinf-sse2.S
* sysdeps/x86_64/fpu/s_cosf.S
* sysdeps/x86_64/fpu/s_sincosf.S
* sysdeps/x86_64/fpu/s_sinf.S:
Just include errno.h; don't define __need_Emath or include
bits/errno.h directly.
Various bits/signum.h headers define SIG_HOLD if __USE_UNIX98. That
should be __USE_XOPEN, as this macro is in XPG4. This patch fixes the
conditionals accordingly. Because of other header bugs, this does not
allow any XFAILs to be removed (however, the XPG4/signal.h/conform
XFAIL only depends on a few such straightforward header bugs, not on
the more complicated to fix ucontext_t issues, as ucontext_t isn't
included in signal.h in XPG4).
Tested for x86_64.
[BZ #21538]
* bits/signum.h (SIG_HOLD): Define if [__USE_XOPEN], not
[__USE_UNIX98].
* sysdeps/unix/bsd/bits/signum.h (SIG_HOLD): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/signum.h (SIG_HOLD):
Likewise.
* sysdeps/unix/sysv/linux/bits/signum.h (SIG_HOLD): Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/signum.h (SIG_HOLD): Likewise.
* sysdeps/unix/sysv/linux/mips/bits/signum.h (SIG_HOLD): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/signum.h (SIG_HOLD):
Likewise.
glibc defines the stack_t type with the tag struct sigaltstack. This
is not permitted by POSIX; sigaltstack is only reserved with file
scope in the namespace of ordinary identifiers, not the tag namespace,
and in the case where stack_t is obtained from ucontext.h rather than
signal.h, it's not reserved with file scope at all.
This patch removes the tag accordingly and updates uses in glibc of
struct sigaltstack. This is similar to the removal of the "struct
siginfo" tag a few years ago: C++ name mangling changes are an
unavoidable consequence. A NEWS item is added to note the changed
mangling. There is inevitably some risk of breaking builds of
anything that relies on the struct sigaltstack name (though the first
few hits I looked at from codesearch.debian.net generally seemed to
involve code that could use the stack_t name conditionally, so
depending on how they determine the conditionals they may work with
glibc not defining the struct tag anyway).
Tested for x86_64 and x86, and with build-many-glibcs.py.
[BZ #21517]
* bits/types/stack_t.h (stack_t): Remove struct tag.
* sysdeps/unix/sysv/linux/bits/types/stack_t.h (stack_t):
Likewise.
* sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h (stack_t):
Likewise.
* debug/segfault.c (install_handler): Use stack_t instead of
struct sigaltstack.
* hurd/hurd/signal.h (struct hurd_sigstate): Likewise.
* hurd/trampoline.c (_hurd_setup_sighandler): Likewise.
* include/signal.h (__sigaltstack): Likwise.
* signal/sigaltstack.c (__sigaltstack): Likewise.
* signal/signal.h (sigaltstack): Likewise.
* sysdeps/mach/hurd/i386/signal-defines.sym
(SIGALTSTACK__SS_SP__OFFSET): Likewise.
(SIGALTSTACK__SS_SIZE__OFFSET): Likewise.
(SIGALTSTACK__SS_FLAGS__OFFSET): Likewise.
* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
* sysdeps/mach/hurd/sigstack.c (sigstack): Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/procfs.h (struct
elf_prstatus): Likewise.
* sysdeps/unix/sysv/linux/hppa/____longjmp_chk.c (CHECK_SP):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sys/procfs.h (struct elf_prstatus):
Likewise.
* sysdeps/unix/sysv/linux/m68k/____longjmp_chk.c (CHECK_SP):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/sys/procfs.h (struct
elf_prstatus): Likewise.
* sysdeps/unix/sysv/linux/sh/sys/procfs.h (struct elf_prstatus):
Likewise.
* sysdeps/unix/sysv/linux/sys/procfs.h (struct elf_prstatus):
Likewise.
Continuing the fixes for namespace issues in sys/ucontext.h, this
patch moves various symbols into the implementation namespace in the
absence of __USE_MISC. As with previous changes, it is nonexhaustive,
just covering more straightforward cases.
Structure fields are generally changed to have a prefix __ in the
absence of __USE_MISC, via a macro __ctx (used without a space before
the open parenthesis, since the result is a single identifier).
Various macros such as NGREG also have leading __ added. No changes
are made to structure tags (and thus to C++ name mangling), except
that in the (unused) file sysdeps/i386/sys/ucontext.h, structures
defined inside other structures as the type for a field have their
tags removed in the non-__USE_MISC case (those structure tags would
not in any case have been visible in C++, because in C++ the scope of
such a tag is limited to the containing structure). No changes are
made to the contents of bits/sigcontext.h, or to whether it is
included. Because of remaining namespace issues, this patch does not
yet fix the bug or allow any XFAILs to be removed.
Tested for x86_64 and x86, and with build-many-glibcs.py.
[BZ #21457]
* sysdeps/arm/sys/ucontext.h (NGREG): Rename to __NGREG and define
NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(__ctx): New macro.
(mcontext_t): Use __ctx in defining fields.
* sysdeps/i386/sys/ucontext.h (NGREG): Rename to __NGREG and
define NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(__ctx): New macro.
(__ctxt): Likewise.
(fpregset_t): Use __ctx and __ctxt in defining fields.
(mcontext_t): Likewise.
* sysdeps/m68k/sys/ucontext.h (NGREG): Rename to __NGREG and
define NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(__ctx): New macro.
(mcontext_t): Use __ctx in defining fields.
* sysdeps/mips/sys/ucontext.h (NGREG): Rename to __NGREG and
define NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(__ctx): New macro.
(fpregset_t): Use __ctx in defining fields.
(mcontext_t): Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h (NGREG): Rename to
__NGREG and define NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(NFPREG): Rename to __NFPREG and define NFPREG to __NFPREG if
[__USE_MISC].
(fpregset_t): Define using __NFPREG.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h (NGREG): Rename to
__NGREG and define NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(__ctx): New macro.
(fpregset_t): Use __ctx in defining fields.
(mcontext_t): Likewise.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h (NGREG): Rename to
__NGREG and define NGREG to __NGREG if [__USE_MISC].
(NFPREG): Rename to __NFPREG and define NFPREG to __NFPREG if
[__USE_MISC].
(gregset_t): Define using __NGREG.
(__ctx): New macro.
(fpregset_t): Use __ctx in defining fields.
(mcontext_t): Likewise.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h (__ctx): New macro.
(mcontext_t): Use __ctx in defining fields.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h (__ctx): New
macro.
[__WORDSIZE == 32] (NGREG): Rename to __NGREG and define NGREG to
__NGREG if [__USE_MISC].
[__WORDSIZE == 32] (gregset_t): Define using __NGREG.
[__WORDSIZE == 32] (fpregset_t): Use __ctx in defining fields.
(mcontext_t): Likewise.
[__WORDSIZE != 32] (NGREG): Rename to __NGREG and define NGREG to
__NGREG if [__USE_MISC].
[__WORDSIZE != 32] (NFPREG): Rename to __NFPREG and define NFPREG
to __NFPREG if [__USE_MISC].
[__WORDSIZE != 32] (NVRREG): Rename to __NVRREG and define NVRREG
to __NVRREG if [__USE_MISC].
[__WORDSIZE != 32] (gregset_t): Define using __NGREG.
[__WORDSIZE != 32] (fpregset_t): Define using __NFPREG.
[__WORDSIZE != 32] (vscr_t): Use __ctx in defining fields.
[__WORDSIZE != 32] (vrregset_t): Likewise.
[__WORDSIZE != 32] (mcontext_t): Likewise.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h (__ctx): New macro.
(__psw_t): Use __ctx in defining fields.
(NGREG): Rename to __NGREG and define NGREG to __NGREG if
[__USE_MISC].
(gregset_t): Define using __NGREG.
(fpreg_t): Use __ctx in defining fields.
(fpregset_t): Likewise.
(mcontext_t): Likewise.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h (NGREG): Rename to
__NGREG and define NGREG to __NGREG if [__USE_MISC].
(gregset_t): Define using __NGREG.
(NFPREG): Rename to __NFPREG and define NFPREG to __NFPREG if
[__USE_MISC].
(fpregset_t): Define using __NFPREG.
(__ctx): New macro.
(mcontext_t): Use __ctx in defining fields.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h (__ctx): New macro.
[__x86_64__] (NGREG): Rename to __NGREG and define NGREG to
__NGREG if [__USE_MISC].
[__x86_64__] (gregset_t): Define using __NGREG.
[__x86_64__] (struct _libc_fpxreg): Use __ctx in defining fields.
[__x86_64__] (struct _libc_fpstate): Likewise.
[__x86_64__] (mcontext_t): Likewise.
[!__x86_64__] (NGREG): Rename to __NGREG and define NGREG to
__NGREG if [__USE_MISC].
[!__x86_64__] (gregset_t): Define using __NGREG.
[!__x86_64__] (struct _libc_fpreg): Use __ctx in defining fields.
[!__x86_64__] (struct _libc_fpstate): Likewise.
[!__x86_64__] (mcontext_t): Likewise.
This patch adds support of preadv2 and pwritev2 which are similar to
preadv/pwritev but with an extra flag argument. As for preadv/pwritev
both interfaces are added a non-standard GNU API.
For default 'posix' implementation trying to emulate the Linux supported
flags is troublesome:
* We can not temporary change the file state of the O_DSYNC and O_SYNC
flags to emulate RWF_{D}SYNC (attempts to change the state of using
fcntl are silently ignored).
* IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
semantic not provided by any other flag (O_NONBLOCK for instance).
So default sysdeps/posix implementations fails with EOPNOTSUPP for any non
supported flag (which are none currently) calls generic preadv/pwritev.
Basically this implementation supports only preadv2 called as preadv (with
flags sets to 0).
The Linux one uses the preadv2/pwritev2 syscall if defined, otherwise it
call preadv/writev. Instead of using the previous __ASSUME_* to
unconditionally issue the syscall (and avoid building the fallback routine),
it call pread/write if the preadv2/pwritev2 syscalls fails. The idea
is just avoid adding another __ASSUME_* and checking each architecture
on every kernel bump and simplify code conditionals.
Checked on x86_64-linux-gnu and on i686-linux-gnu and a check with
run-built-tests=no on aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu, mips{64,64n32}-linux-gnu,
nios2-linux-gnu, powerpc{64,64le}-linux-gnu, s390{x}-linux-gnu,
sparc{64,v9}-linux-gnu, tile{gx,pro}-linux-gnu, and sh4-linux-gnu (all using
gcc 6.3).
* NEWS: Add note about pwritev2 and preadv2 inclusion.
* misc/Makefile (routines): Add preadv2, preadv64v2, pwritev2, and
pwritev64v2.
(tests): Add tst-preadvwritev2 and tst-preadvwritev64v2.
* misc/Versions (GLIBC_2.26): Add preadv2, preadv64v2, pwritev2, and
pwritev64v2.
* misc/preadv2.c: New file.
* misc/preadv64v2.c: Likewise.
* misc/pwritev2.c: Likewise.
* misc/pwritev64v2.c: Likewise.
* misc/tst-preadvwritev2.c: Likewise.
* misc/tst-preadvwritev64v2.c: Likewise.
* manual/llio.texi: Add preadv2 and pwritev2 documentation.
* misc/sys/uio.h [__USE_GNU && !__USE_FILE_OFFSET64] (preadv2): New
prototype.
[__USE_GNU && !__USE_FILE_OFFSET64] (pwritev2): Likewise.
[__USE_GNU && __USE_FILE_OFFSET64] (preadv64v2): Likewise.
[__USE_GNU && __USE_FILE_OFFSET64] (pwritev64v2): Likewise.
* misc/tst-preadvwritev-common.c (PREADV): Define if not defined.
(PWRITEV): Likewise.
(do_test_with_offset): Use PREADV and PWRITEV macros and check for
ENOSYS.
* nptl/tst-cancel4.c (tf_pwritev2): New test.
(tf_preadv2): Likewise.
(tf_fsync): Add tf_pwritev2 and tf_preadv2.
* sysdeps/posix/preadv2.c: Likewise.
* sysdeps/posix/preadv64v2.c: Likewise.
* sysdeps/posix/pwritev2.c: Likewise.
* sysdeps/posix/pwritev64v2.c: Likewise.
* sysdeps/unix/sysv/linux/kernel-features.h: Add comment for syscall
support in kernel.
* sysdeps/unix/sysv/linux/preadv2.c: Likewise.
* sysdeps/unix/sysv/linux/preadv64v2.c: Likewise.
* sysdeps/unix/sysv/linux/pwritev2.c: Likewise.
* sysdeps/unix/sysv/linux/pwritev64v2.c: Likewise.
* sysdeps/unix/sysv/linux/preadv.c (preadv): Add libc_hidden_def.
* sysdeps/unix/sysv/linux/preadv64.c (preadv64): Likewise.
* sysdeps/unix/sysv/linux/pwritev.c (pwritev): Likewise.
* sysdeps/unix/sysv/linux/pwritev64.c (pwritev64): Likewise.
* sysdeps/unix/sysv/linux/bits/uio.h: Add supported preadv2/pwritev2
support flags on Linux.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.26): Add
preadv2, preadv64v2, pwritev2, pwritev64v2.
* sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/arm/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/nios2/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
(GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
(GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
(GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist (GLIBC_2.26): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/sysv/linux/tile/tilegx/tilegx32/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/sysv/linux/tile/tilegx/tilegx64/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist (GLIBC_2.26):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist (GLIBC_2.26):
Likewise.
The various sys/ucontext.h headers include <signal.h> and all the
headers split out of <bits/sigstack.h>. (Except that the powerpc
version does not include <signal.h>.)
None of the standard versions defining ucontext.h require or permit
such inclusions; rather, they all say that the stack_t and sigset_t
types from signal.h are defined. This patch fixes the headers to
include just the bits/ headers for those types (and the existing
includes of bits/sigcontext.h). Since bits/types/sigset_t.h is now
being included instead of bits/types/__sigset_t.h, __sigset_t uses in
the headers are replaced by direct use of the public sigset_t type.
sysdeps/unix/sysv/linux/x86/bits/sigcontext.h was relying on the prior
inclusion of <signal.h> to define types such as __uint32_t, so gets a
bits/types.h include added to provide those types.
Although one could keep some or all of the includes under a __USE_MISC
conditional, that seems unnecessary to me, especially given the lack
of a <signal.h> include in the powerpc version meaning that portable
programs already cannot rely on such an include.
Tested for x86_64 and x86, and with build-many-glibcs.py. As with
other such fixes, more namespace issues remain so this does not permit
any XFAILs to be removed or bugs to be closed.
[BZ #21457]
* sysdeps/arm/sys/ucontext.h: Do not include <signal.h>,
<bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/generic/sys/ucontext.h: Do not include <signal.h>,
<bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/i386/sys/ucontext.h: Do not include <signal.h>,
<bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/m68k/sys/ucontext.h: Do not include <signal.h>,
<bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/mips/sys/ucontext.h: Do not include <signal.h>,
<bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h>.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Do not include
<bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
* sysdeps/unix/sysv/linux/x86/bits/sigcontext.h: Include
<bits/types.h>.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Do not include
<signal.h>, <bits/sigstack.h>, <bits/types/struct_sigstack.h> or
<bits/ss_flags.h>. Include <bits/types/sigset_t.h> instead of
<bits/types/__sigset_t.h>.
(ucontext_t): Use sigset_t instead of __sigset_t.
The types affected are __sig_atomic_t, sig_atomic_t, __sigset_t,
sigset_t, sigval_t, sigevent_t, and siginfo_t. __sig_atomic_t is a
scalar, so it's now directly available from bits/types.h. The others
get bits/types/ headers.
Side effects include: There have been small changes to which
non-signal headers expose which subset of the signal-related types.
A couple of architectures' nested siginfo_t fields had to be renamed
to prevent undesired macro expansion. Internal code that wants to
manipulate signal masks must now include <sigsetops.h> (which is not
installed) and should be aware that __sigaddset, __sigandset,
__sigdelset, __sigemptyset, and __sigorset no longer return a value
(unlike the public API). Relatedly, the public signal.h no longer
declares any of those functions. The obsolete sigmask() macro no
longer has a system-specific definition -- in the cases where it
matters, it didn't work anyway.
New Linux architectures should create bits/siginfo-arch.h and/or
bits/siginfo-consts-arch.h to customize their siginfo_t, rather than
duplicating everything in bits/siginfo.h (which no longer exists).
Add new __SI_* macros if necessary. Ports to other operating systems
are strongly encouraged to generalize this scheme further.
* bits/sigevent-consts.h
* bits/siginfo-consts.h
* bits/types/__sigset_t.h
* bits/types/sigevent_t.h
* bits/types/siginfo_t.h
* sysdeps/unix/sysv/linux/bits/sigevent-consts.h
* sysdeps/unix/sysv/linux/bits/siginfo-consts.h
* sysdeps/unix/sysv/linux/bits/types/__sigset_t.h
* sysdeps/unix/sysv/linux/bits/types/sigevent_t.h
* sysdeps/unix/sysv/linux/bits/types/siginfo_t.h:
New system-dependent bits headers.
* sysdeps/unix/sysv/linux/bits/siginfo-arch.h
* sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h
* sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h
* sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h
* sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h
* sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h
* sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h
* sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h
* sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h:
New Linux-only system-dependent bits headers.
* signal/bits/types/sig_atomic_t.h
* signal/bits/types/sigset_t.h
* signal/bits/types/sigval_t.h:
New non-system-dependent bits headers.
* sysdeps/generic/sigsetops.h
* sysdeps/unix/sysv/linux/sigsetops.h:
New internal headers.
* include/bits/types/sig_atomic_t.h
* include/bits/types/sigset_t.h
* include/bits/types/sigval_t.h:
New wrappers.
* signal/sigsetops.h
* bits/siginfo.h
* bits/sigset.h
* sysdeps/unix/sysv/linux/bits/siginfo.h
* sysdeps/unix/sysv/linux/bits/sigset.h
* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h
* sysdeps/unix/sysv/linux/mips/bits/siginfo.h
* sysdeps/unix/sysv/linux/s390/bits/siginfo.h
* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
* sysdeps/unix/sysv/linux/tile/bits/siginfo.h
* sysdeps/unix/sysv/linux/x86/bits/siginfo.h:
Deleted.
* signal/Makefile, sysdeps/unix/sysv/linux/Makefile:
Update lists of installed headers.
* posix/bits/types.h: Define __sig_atomic_t here.
* signal/signal.h: Use the new bits headers; no need to handle
__need_sig_atomic_t nor __need_sigset_t. Don't use __sigmask
to define sigmask.
* include/signal.h: No need to handle __need_sig_atomic_t
nor __need_sigset_t. Don't define __sigemptyset.
* io/sys/poll.h, setjmp/setjmp.h
* sysdeps/arm/sys/ucontext.h, sysdeps/generic/sys/ucontext.h
* sysdeps/i386/sys/ucontext.h, sysdeps/m68k/sys/ucontext.h
* sysdeps/mach/hurd/i386/bits/sigcontext.h
* sysdeps/mips/sys/ucontext.h, sysdeps/powerpc/novmxsetjmp.h
* sysdeps/pthread/bits/sigthread.h
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h:
Use bits/types/__sigset_t.h.
* misc/sys/select.h, posix/spawn.h
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
* sysdeps/unix/sysv/linux/sys/epoll.h
* sysdeps/unix/sysv/linux/sys/signalfd.h:
Use bits/types/sigset_t.h.
* resolv/netdb.h, rt/mqueue.h: Use bits/types/sigevent_t.h.
* rt/aio.h: Use bits/types/sigevent_t.h and bits/sigevent-consts.h.
* socket/sys/socket.h: Don't include bits/sigset.h.
* login/utmp_file.c, shadow/lckpwdf.c, signal/sigandset.c
* signal/sigisempty.c, stdlib/abort.c, sysdeps/posix/profil.c
* sysdeps/posix/sigignore.c, sysdeps/posix/sigintr.c
* sysdeps/posix/signal.c, sysdeps/posix/sigset.c
* sysdeps/posix/sprofil.c, sysdeps/posix/sysv_signal.c
* sysdeps/unix/sysv/linux/nptl-signals.h:
Include sigsetops.h.
* signal/sigaddset.c, signal/sigandset.c, signal/sigdelset.c
* signal/sigorset.c, stdlib/abort.c, sysdeps/posix/sigignore.c
* sysdeps/posix/signal.c, sysdeps/posix/sigset.c:
__sigaddset, __sigandset, __sigdelset, __sigemptyset, __sigorset
now return no value.
* signal/sigaddset.c, signal/sigdelset.c, signal/sigismem.c
Include <errno.h>, <signal.h>, and <sigsetops.h> instead of
"sigsetops.h".
* signal/sigsetops.c: Explicitly define __sigismember,
__sigaddset, and __sigdelset as compatibility symbols.
* signal/Versions: Correct commentary on __sigpause,
__sigaddset, __sigdelset, __sigismember.
* inet/rcmd.c: Include sigsetops.h. Convert old code using
__sigblock/__sigsetmask to use __sigprocmask and friends.
bits/sigstack.h contains four things: the legacy struct sigstack type,
the preferred stack_t type, the SS_* enum values and macros for signal
stack sizes.
These vary in different ways between glibc configurations; in
particular, the stack sizes vary much more than any of the other
pieces. Furthermore, these pieces have different standard namespace
rules for when they should be visible (not currently visible in
conform/ results both because the relevant tests are XFAILed for
sys/ucontext.h namespace issues, and because some of the expectations
are incorrect in the same way as the headers, e.g. neither
expectations nor headers reflect that current POSIX no longer has
either the sigstack function or the sigstack structure).
To reduce duplication of identical definitions, and facilitate
namespace fixes without requiring the same feature test macro
conditions to be repeated in many versions of the same header, this
patch splits bits/sigstack.h up into four headers. It keeps the stack
size macros, while new bits/types/struct_sigstack.h,
bits/types/stack_t.h and bits/ss_flags.h are added for the other
pieces. bits/types/struct_sigstack.h is the same everywhere,
bits/types/stack_t.h has three variants different in the order of the
structure elements (generic = MIPS Linux, and other Linux), and
bits/ss_flags.h has generic and Linux variants.
This patch includes the new headers everywhere that included
<bits/sigstack.h>, so should cause no difference to what any public
header defines. Subsequent namespace fixes would then remove or
condition some of those includes.
There should be no conflicts with Zack's changes to signal.h types,
beyond the trivial conflict of both making additions to
signal/Makefile's headers list; the two patches affect disjoint sets
of types and other definitions.
Tested for x86_64 and x86, and with build-many-glibcs.py.
* bits/ss_flags.h: New file.
* bits/types/stack_t.h: Likewise.
* include/bits/types/struct_sigstack.h: Likewise.
* signal/bits/types/struct_sigstack.h: Likewise.
* sysdeps/unix/sysv/linux/bits/ss_flags.h: Likewise.
* sysdeps/unix/sysv/linux/bits/types/stack_t.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h: Likewise.
* signal/Makefile (headers): Add bits/types/struct_sigstack.h,
bits/types/stack_t.h and bits/ss_flags.h.
* signal/signal.h [__USE_XOPEN_EXTENDED || __USE_XOPEN2K8]:
Include <bits/types/struct_sigstack.h>, <bits/types/stack_t.h> and
<bits/ss_flags.h>.
* bits/sigstack.h (struct sigstack): Remove.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h
(struct sigstack): Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/mips/bits/sigstack.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h
(struct sigstack): Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/arm/sys/ucontext.h: Include
<bits/types/struct_sigstack.h>, <bits/types/stack_t.h> and
<bits/ss_flags.h>.
* sysdeps/generic/sys/ucontext.h: Likewise.
* sysdeps/i386/sys/ucontext.h: Likewise.
* sysdeps/m68k/sys/ucontext.h: Likewise.
* sysdeps/mips/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Likewise.
This patch consolidates the sigsuspend Linux syscall generation on
sysdeps/unix/sysv/linux/sigsuspend.c. It basically removes the alpha
assembly version which call the old sigsusped interface using only
the first doubleword from sigset. Current minimum supported kernel
on alpha (3.2) enforces rt_sigsuspend on the architecture
(__ARCH_WANT_SYS_RT_SIGSUSPEND option on kernel), so it is possible
to use the default implementation.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu,
sparc64-linux-gnu, and sparcv9-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/sigsuspend.S: Remove file.
* sysdeps/unix/sysv/linux/sigsuspend.c: Simplify include list.
* nptl/Makefile (CFLAGS-sigsuspend.c): New rule.
* sysdeps/unix/sysv/linux/sparc/sparc64/Makefile
(CFLAGS-sigsuspend.c): Remove rule.
This patch consolidates the creat Linux syscall implementation on
sysdeps/unix/sysv/linux/creat{64}.c. The changes are:
1. Remove creat{64} from auto-generation syscalls.list.
2. Add a new creat{64}.c implementation. For architectures that
define __OFF_T_MATCHES_OFF64_T the default creat64 will create
alias to required creat symbols.
3. Use __NR_creat where possible, otherwise use internal open{64}
call with expected flags.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* io/Makefile (CFLAGS-creat.c): New rule.
(CFLAGS-creat64.c): Likewise.
* sysdeps/unix/sysv/linux/alpha/creat.c: Remove file.
* sysdeps/unix/sysv/linux/generic/creat.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/creat64.c: Likewise.
* sysdeps/unix/sysv/linux/creat.c: New file.
* sysdeps/unix/sysv/linux/creat64.c: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Remove create from
auto-generated list.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
This patch consolidates the select Linux syscall implementation on
sysdeps/unix/sysv/linux/select.c. The changes are:
1. Remove select from auto-generation syscalls.list on the architecture
that uses __NR_select.
2. Remove generic implementation add a default one that handle all
current cases (with the expection of alpha)
The new default implementation will either use __NR_select if
available of fallback to __NR_pselect6 otherwise.
3. Add a alpha outlier implementation which requires old compatibility
symbols.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Add
osf_select.
* sysdeps/unix/sysv/linux/alpha/select.c: New file.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove select and
osf_select from auto-generation list.
* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/generic/select.c: Remove file.
* sysdeps/unix/sysv/linux/select.c: New file.
This patch moves all arch specific pthreadtypes.h to a similar path
for all architectures (sysdeps/unix/sysv/<arch>/bits). No functional
or build change is expected. The idea is mainly to organize the
header placement for all architectures.
Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu,
arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu,
m68k-linux-gnu, microblaze-linux-gnu [1], mips{64}-linux-gnu, nios2-linux-gnu,
powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu,
tile{pro,gx}-linux-gnu, and x86_64-linux-gnu).
* sysdeps/unix/sysv/linux/x86/Implies: New file.
* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h: Move to ...
* sysdeps/alpha/nptl/bits/pthreadtypes.h: ... here.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Move to ...
* sysdeps/powerpc/nptl/bits/pthreadtypes.h: ... here.
* sysdeps/x86/bits/pthreadtypes.h: Move to ...
* sysdeps/x86/nptl/bits/pthreadtypes.h: ... here.
termios.h should define IUCLC for UNIX98 and older XSI standards. The
sysdeps/unix/sysv/linux/alpha version defines it only if __USE_MISC,
so causing some conform/ tests to fail.
Other versions define it unconditionally (I* being a reserved
namespace for this header); the API should be consistent between
architectures in the absence of a clear reason for it to differ (and
given that a symbol is part of the API on two architectures, I don't
see any reason for the feature test macros required ever to differ
between those architectures), so this patch makes the alpha version
define it unconditionally as well. Two non-POSIX macros alongside it,
IMAXBEL and IUTF8, are also defined unconditionally on other
architectures, so this patch makes them consistent by defining them
unconditionally on alpha as well.
Tested (compilation only) with build-many-glibcs.py.
[BZ #21277]
* sysdeps/unix/sysv/linux/alpha/bits/termios.h (IUCLC): Define
unconditionally.
(IMAXBEL): Likewise.
(IUTF8): Likewise.
sysdeps/unix/sysv/linux/alpha/bits/termios.h defines NL2 and NL3 for
__USE_MISC || __USE_XOPEN. These should only be defined for
__USE_MISC as they are not part of any standard namespace. This patch
conditions them accordingly, matching the powerpc version of the
header (the only other one in glibc that defines these macros).
Tested (compilation only) with build-many-glibcs.py.
[BZ #21268]
* sysdeps/unix/sysv/linux/alpha/bits/termios.h (NL2): Define only
if [__USE_MISC]
(NL3): Likewise.
sysdeps/unix/sysv/linux/alpha/bits/termios.h defines IXANY only if
__USE_MISC. But it's in the base standard for POSIX.1:2008, and
XSI-shaded in previous standards. This patch makes the header define
it unconditionally, like other versions of this header do (it's always
reserved by standards that don't require it, so defining
unconditionally is OK by the standards).
Tested (compilation only) for alpha with build-many-glibcs.py. Note
that there are still termios.h conformtest failures after this patch
because of other issues with the alpha version of this header.
[BZ #21259]
* sysdeps/unix/sysv/linux/alpha/bits/termios.h (IXANY): Define
unconditionally, not just for [__USE_MISC].
As noted in bug 21260, sysdeps/unix/sysv/linux/alpha/bits/netdb.h
defines struct netent with n_net of type unsigned long instead of the
correct uint32_t. This patch XFAILs that test in the conformtest
expectations for alpha. (This is not a fix for the bug, and it should
not be closed without an actual fix.)
Tested for alpha with build-many-glibcs.py.
[BZ #21260]
* sysdeps/unix/sysv/linux/alpha/Makefile
[$(subdir) = conform] (conformtest-xfail-conds): New variable.
Fix 60f9423b type for alpha kernel-features.h definition.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_RECV_SYSCALL): Replace duplicate by
__ASSUME_SEND_SYSCALL.
This patch consolidates the send Linux syscall implementation on
sysdeps/unix/sysv/linux/send{to}.c. The changes are:
1. Remove send from auto-generation syscalls.list on the architecture
that uses __NR_send.
2. Define __NR_send for architectures that supports it. It was done instead
of defining in default kernel-features.h because current Linux practice
for new ports are to implement only __NR_sendto [1] and it will
require adding new kernel-features for ports that do not require it
(aarch64 for instance).
3. Remove __ASSUME_SENDTO_FOR_SEND_SYSCALL and decide to use
__NR_sendto for send generation based on __ASSUME_SENDTO_SYSCALL.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/sysdep.h (HAVE_INTERNAL_SEND_SYMBOL):
Define.
* sysdeps/unix/sysv/linux/aarch64/sysdep.h
(HAVE_INTERNAL_SEND_SYMBOL): Undefine.
* sysdeps/unix/sysv/linux/nios2/sysdep.h
(HAVE_INTERNAL_SEND_SYMBOL): Likewise.
* sysdeps/unix/sysv/linux/tile/sysdep.h
(HAVE_INTERNAL_SEND_SYMBOL): Likewise.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_RECV_SYSCALL): Define.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Remove define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove send from
auto-generation list.
* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewike.
* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/send.c: Simplify includes.
(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Replace by
__ASSUME_SENDTO_SYSCALL.
* sysdeps/unix/sysv/linux/x86_64/send.c: Remove file.
* sysdeps/unix/sysv/linux/mips/mips64/send.c: Likewise.
* sysdeps/unix/sysv/linux/generic/send.c: Likewise.
This patch consolidates the recv Linux syscall implementation on
sysdeps/unix/sysv/linux/recv.c. The changes are:
1. Remove recv from auto-generation syscalls.list on the architecture
that uses __NR_recv.
2. Define __NR_recv for architectures that supports it. It was done
instead of defining in default kernel-features.h because current Linux
practice for new ports is to implement only __NR_recvfrom [1] and it will
require adding new kernel-features for ports that do not require it
(aarch64 for instance).
3. Remove __ASSUME_RECVFROM_FOR_RECV_SYSCALL and decide to use
__NR_recvfrom for recv generation based on __ASSUME_RECVFROM_SYSCALL.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove recv from
auto-generation list.
* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_RECV_SYSCALL): New define.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
(__ASSUME_RECV_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Remove define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Remove define.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Remove define.
* sysdeps/unix/sysv/linux/generic/recv.c: Remove file.
* sysdeps/unix/sysv/linux/mips/mips64/recv.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/recv.c: Likewise.
* sysdeps/unix/sysv/linux/recv.c: Simplify includes.
(__libc_recv): Use __ASSUME_RECVFROM_SYSCALL instead of
__ASSUME_RECVFROM_FOR_RECV_SYSCALL to issue recvfrom syscall.
[1] include/asm-generic/unistd.h (__ARCH_WANT_SYSCALL_DEPRECATED)
This patch consolidates the connect Linux syscall implementation on
sysdeps/unix/sysv/linux/accept.c. The changes are:
1. Remove connect from auto-generation syscalls.list on the architecture
that uses __NR_connect.
2. Define __NR_connect as default (__ASSUME_CONNECT_SYSCALL) and undef for
architectures that do not support it.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove connect from
auto-generation list.
* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/connect.c: Simplify include list.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_CONNECT_SYSCALL): Define.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_CONNECT_SYSCALL): Undef if kernel does not support it.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_CONNECT_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
(__ASSUME_CONNECT_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h
(__ASSUME_CONNECT_SYSCALL): Likewise.
This patch consolidates the accept Linux syscall implementation on
sysdeps/unix/sysv/linux/accept.c. The changes are:
1. Remove accept from auto-generation syscalls.list on the architecture
that uses __NR_accept.
2. Define __NR_accept as default (__ASSUME_ACCEPT_SYSCALL) and undef for
architectures that do not support it.
3. Remove __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL and decide to use
__NR_accept4 for accept generation based on __ASSUME_ACCEPT4_SYSCALL.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/accept.c (__libc_accept): Replace
__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL by __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove accept from
auto-generation list.
* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): New define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
(__ASSUME_ACCEPT_SYSCALL): Define wheter kernel version supports.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Define.
* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Undefine for 32 bits.
This is a new implementation for condition variables, required
after http://austingroupbugs.net/view.php?id=609 to fix bug 13165. In
essence, we need to be stricter in which waiters a signal or broadcast
is required to wake up; this couldn't be solved using the old algorithm.
ISO C++ made a similar clarification, so this also fixes a bug in
current libstdc++, for example.
We can't use the old algorithm anymore because futexes do not guarantee
to wake in FIFO order. Thus, when we wake, we can't simply let any
waiter grab a signal, but we need to ensure that one of the waiters
happening before the signal is woken up. This is something the previous
algorithm violated (see bug 13165).
There's another issue specific to condvars: ABA issues on the underlying
futexes. Unlike mutexes that have just three states, or semaphores that
have no tokens or a limited number of them, the state of a condvar is
the *order* of the waiters. A waiter on a semaphore can grab a token
whenever one is available; a condvar waiter must only consume a signal
if it is eligible to do so as determined by the relative order of the
waiter and the signal.
Therefore, this new algorithm maintains two groups of waiters: Those
eligible to consume signals (G1), and those that have to wait until
previous waiters have consumed signals (G2). Once G1 is empty, G2
becomes the new G1. 64b counters are used to avoid ABA issues.
This condvar doesn't yet use a requeue optimization (ie, on a broadcast,
waking just one thread and requeueing all others on the futex of the
mutex supplied by the program). I don't think doing the requeue is
necessarily the right approach (but I haven't done real measurements
yet):
* If a program expects to wake many threads at the same time and make
that scalable, a condvar isn't great anyway because of how it requires
waiters to operate mutually exclusive (due to the mutex usage). Thus, a
thundering herd problem is a scalability problem with or without the
optimization. Using something like a semaphore might be more
appropriate in such a case.
* The scalability problem is actually at the mutex side; the condvar
could help (and it tries to with the requeue optimization), but it
should be the mutex who decides how that is done, and whether it is done
at all.
* Forcing all but one waiter into the kernel-side wait queue of the
mutex prevents/avoids the use of lock elision on the mutex. Thus, it
prevents the only cure against the underlying scalability problem
inherent to condvars.
* If condvars use short critical sections (ie, hold the mutex just to
check a binary flag or such), which they should do ideally, then forcing
all those waiter to proceed serially with kernel-based hand-off (ie,
futex ops in the mutex' contended state, via the futex wait queues) will
be less efficient than just letting a scalable mutex implementation take
care of it. Our current mutex impl doesn't employ spinning at all, but
if critical sections are short, spinning can be much better.
* Doing the requeue stuff requires all waiters to always drive the mutex
into the contended state. This leads to each waiter having to call
futex_wake after lock release, even if this wouldn't be necessary.
[BZ #13165]
* nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast): Rewrite to
use new algorithm.
* nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise.
* nptl/pthread_cond_init.c (__pthread_cond_init): Likewise.
* nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise.
* nptl/pthread_cond_wait.c (__pthread_cond_wait): Likewise.
(__pthread_cond_timedwait): Move here from pthread_cond_timedwait.c.
(__condvar_confirm_wakeup, __condvar_cancel_waiting,
__condvar_cleanup_waiting, __condvar_dec_grefs,
__pthread_cond_wait_common): New.
(__condvar_cleanup): Remove.
* npt/pthread_condattr_getclock.c (pthread_condattr_getclock): Adapt.
* npt/pthread_condattr_setclock.c (pthread_condattr_setclock):
Likewise.
* npt/pthread_condattr_getpshared.c (pthread_condattr_getpshared):
Likewise.
* npt/pthread_condattr_init.c (pthread_condattr_init): Likewise.
* nptl/tst-cond1.c: Add comment.
* nptl/tst-cond20.c (do_test): Adapt.
* nptl/tst-cond22.c (do_test): Likewise.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_cond_t): Adapt
structure.
* sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/x86/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/nptl/internaltypes.h (COND_NWAITERS_SHIFT): Remove.
(COND_CLOCK_BITS): Adapt.
* sysdeps/nptl/pthread.h (PTHREAD_COND_INITIALIZER): Adapt.
* nptl/pthreadP.h (__PTHREAD_COND_CLOCK_MONOTONIC_MASK,
__PTHREAD_COND_SHARED_MASK): New.
* nptl/nptl-printers.py (CLOCK_IDS): Remove.
(ConditionVariablePrinter, ConditionVariableAttributesPrinter): Adapt.
* nptl/nptl_lock_constants.pysym: Adapt.
* nptl/test-cond-printers.py: Adapt.
* sysdeps/unix/sysv/linux/hppa/internaltypes.h (cond_compat_clear,
cond_compat_check_and_clear): Adapt.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c: Remove file ...
* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
(__pthread_cond_timedwait): ... and move here.
* nptl/DESIGN-condvar.txt: Remove file.
* nptl/lowlevelcond.sym: Likewise.
* nptl/pthread_cond_timedwait.c: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
TS 18661-1 defines fromfp functions (fromfp, fromfpx, ufromfp,
ufromfpx, and float and long double variants) to convert from
floating-point to an integer type with any signedness and any given
width up to that of intmax_t, in any of the five IEEE rounding modes
(the usual four for binary floating point, plus rounding to nearest
with ties rounding away from zero), with control of whether in-range
non-integer values should result in the "inexact" exception being
raised. This patch implements these functions for glibc.
These implementations are (apart from raising exceptions) pure integer
implementations; it's entirely possible optimized versions could be
devised for some architectures. A common math/fromfp.h header
provides various common helper code that can readily be shared between
the implementations for different types. For each type, the bulk of
the implementation is also shared between the four functions, with
wrappers that define UNSIGNED and INEXACT macros appropriately before
including the main implementation.
As the functions return intmax_t and uintmax_t without math.h being
allowed to expose those typedef names, they are declared using
__intmax_t and __uintmax_t as obtained from <bits/types.h>.
The FP_INT_* rounding direction macros are defined as ascending
integers in the order the names are listed in the TS; I see no
significant value in allowing architectures to vary the values of
them.
The libm-test machinery is duly adapted to handle unsigned int
arguments, and intmax_t and uintmax_t results. Because each test
input is generally tested for four functions, five rounding modes and
several different widths, the libm-test.inc additions are very large.
Thus, the diffs in the body of this message exclude the libm-test.inc
changes, with the full patch being attached gzipped. The bulk of the
new tests were generated (expanded from a test input plus rounding
results and information about where it lies in the relevant interval
between integers, to libm-test tests for all relevant combinations of
function, rounding direction and width) by a script that's included in
the patch as math/gen-fromfp-tests.py (input data
math/gen-fromfp-tests-inputs); as an ad hoc script that's not really
expected to be rerun, it's not very polished, but it's at least
plausibly useful for adding any further tests for these functions in
future. I may split the libm-test tests up by function in future (so
both libm-test.inc and auto-libm-test-out are split into separate
files, and the tests for each function are also built and run
separately), but not for 2.25.
For no obvious reason, adding tgmath tests for the new functions
resulted in -Wuninitialized errors from test-tgmath.c about the
variable i being used uninitialized. Those errors were correct - the
variable is read by the frexp version in test-tgmath.c (where real
frexp would write through that pointer instead of reading it) - but I
don't know why this patch would result in the pre-existing issue being
newly detected. The patch initializes the variable to avoid those
errors.
With these changes, glibc 2.25 should have all the library features
from TS 18661-1 other than the functions that round result to narrower
type (and constant rounding directions, but I'm considering those
mainly a compiler feature not a library one).
Tested for x86_64, x86, mips64 and powerpc.
* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
(fromfp): New declaration.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfpx): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfp): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfpx): Likewise.
* math/tgmath.h (__TGMATH_TERNARY_FIRST_REAL_RET_ONLY): New macro.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfp): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfp): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfpx): Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfpx): Likewise.
* math/math.h: Include <bits/types.h>.
[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_INT_UPWARD): New enum
constant and macro.
(FP_INT_DOWNWARD): Likewise.
(FP_INT_TOWARDZERO): Likewise.
(FP_INT_TONEARESTFROMZERO): Likewise.
(FP_INT_TONEAREST): Likewise.
* math/Versions (fromfp): New libm symbol at version GLIBC_2.25.
(fromfpf): Likewise.
(fromfpl): Likewise.
(ufromfp): Likewise.
(ufromfpf): Likewise.
(ufromfpl): Likewise.
(fromfpx): Likewise.
(fromfpxf): Likewise.
(fromfpxl): Likewise.
(ufromfpx): Likewise.
(ufromfpxf): Likewise.
(ufromfpxl): Likewise.
* math/Makefile (libm-calls): Add s_fromfpF, s_ufromfpF,
s_fromfpxF and s_ufromfpxF.
* math/gen-fromfp-tests.py: New file.
* math/gen-fromfp-tests-inputs: Likewise.
* math/libm-test.inc: Include <stdint.h>
(check_intmax_t): New function.
(check_uintmax_t): Likewise.
(struct test_fiu_M_data): New type.
(struct test_fiu_U_data): Likewise.
(RUN_TEST_fiu_M): New macro.
(RUN_TEST_LOOP_fiu_M): Likewise.
(RUN_TEST_fiu_U): Likewise.
(RUN_TEST_LOOP_fiu_U): Likewise.
(fromfp_test_data): New array.
(fromfp_test): New function.
(fromfpx_test_data): New array.
(fromfpx_test): New function.
(ufromfp_test_data): New array.
(ufromfp_test): New function.
(ufromfpx_test_data): New array.
(ufromfpx_test): New function.
(main): Call fromfp_test, fromfpx_test, ufromfp_test and
ufromfpx_test.
* math/gen-libm-test.pl (parse_args): Handle u, M and U descriptor
characters.
* math/test-tgmath-ret.c: Include <stdint.h>.
(rm): New variable.
(width): Likewise.
(CHECK_RET_CONST_TYPE): Take extra arguments and pass them to
called function.
(CHECK_RET_CONST_FLOAT): Take extra arguments and pass them to
CHECK_RET_CONST_TYPE.
(CHECK_RET_CONST_DOUBLE): Likewise.
(CHECK_RET_CONST_LDOUBLE): Likewise.
(CHECK_RET_CONST): Take extra arguments and pass them to calls
macros.
(fromfp): New CHECK_RET_CONST call.
(ufromfp): Likewise.
(fromfpx): Likewise.
(ufromfpx): Likewise.
(do_test): Call check_return_fromfp, check_return_ufromfp,
check_return_fromfpx and check_return_ufromfpx.
* math/test-tgmath.c: Include <stdint.h>
(NCALLS): Increase to 138.
(F(compile_test)): Initialize i. Call fromfp functions.
(F(fromfp)): New function.
(F(fromfpx)): Likewise.
(F(ufromfp)): Likewise.
(F(ufromfpx)): Likewise.
* manual/arith.texi (Rounding Functions): Document FP_INT_UPWARD,
FP_INT_DOWNWARD, FP_INT_TOWARDZERO, FP_INT_TONEARESTFROMZERO,
FP_INT_TONEAREST, fromfp, fromfpf, fromfpl, ufromfp, ufromfpf,
ufromfpl, fromfpx, fromfpxf, fromfpxl, ufromfpx, ufromfpxf and
ufromfpxl.
* manual/libm-err-tab.pl (@all_functions): Add fromfp, fromfpx,
ufromfp and ufromfpx.
* math/fromfp.h: New file.
* sysdeps/ieee754/dbl-64/s_fromfp.c: Likewise.
* sysdeps/ieee754/dbl-64/s_fromfp_main.c: Likewise.
* sysdeps/ieee754/dbl-64/s_fromfpx.c: Likewise.
* sysdeps/ieee754/dbl-64/s_ufromfp.c: Likewise.
* sysdeps/ieee754/dbl-64/s_ufromfpx.c: Likewise.
* sysdeps/ieee754/flt-32/s_fromfpf.c: Likewise.
* sysdeps/ieee754/flt-32/s_fromfpf_main.c: Likewise.
* sysdeps/ieee754/flt-32/s_fromfpxf.c: Likewise.
* sysdeps/ieee754/flt-32/s_ufromfpf.c: Likewise.
* sysdeps/ieee754/flt-32/s_ufromfpxf.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_fromfpl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_fromfpl_main.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_fromfpxl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_ufromfpl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_ufromfpxl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_fromfpl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_fromfpl_main.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_fromfpxl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_ufromfpl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_ufromfpxl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_fromfpl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_fromfpl_main.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_fromfpxl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_ufromfpl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_ufromfpxl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fromfp,
ufromfp, fromfpx and ufromfpx.
(CFLAGS-nldbl-fromfp.c): New variable.
(CFLAGS-nldbl-fromfpx.c): Likewise.
(CFLAGS-nldbl-ufromfp.c): Likewise.
(CFLAGS-nldbl-ufromfpx.c): Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.h: Include <stdint.h>.
* sysdeps/ieee754/ldbl-opt/nldbl-fromfp.c: New file.
* sysdeps/ieee754/ldbl-opt/nldbl-fromfpx.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-ufromfp.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-ufromfpx.c: Likewise.
* sysdeps/nacl/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
this patch add a direct call to shmget syscall if it is supported by
kernel features.
Checked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmget): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (shmget): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (shmget): Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmget): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmget): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmget): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmget):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmget):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmget): Likewise.
* sysdeps/unix/sysv/linux/shmget.c (shmget): Use shmget syscall if it
is defined.
this patch add a direct call to shmdt syscall if it is supported by
kernel features.
hecked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmdt): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmdt):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmdt):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Use shmdt syscall if it is
defined.
This patch consolidates the shmctl Linux implementation in only
one default file, sysdeps/unix/sysv/linux/shmctl.c. If tries to use
the direct syscall if it is supported, otherwise will use the old ipc
multiplex mechanism.
The patch also simplify header inclusion and reorganize internal
compat symbol to be built only if old ipc is defined.
Checked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines): Remove
oldshmctl.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmctl): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (shmctl): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (shmctl): Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmctl): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmctl): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmctl): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmctl):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmctl):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmctl): Likewise.
* sysdeps/unix/sysv/linux/alpha/shmctl.c: Remove file.
* sysdeps/unix/sysv/linux/arm/shmctl.c: Likewise.
* sysdeps/unix/sysv/linux/microblaze/shmctl.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/shmctl.c: Use default
implementation.
* sysdeps/unix/sysv/linux/shmctl.c (__new_shmctl): Use shmctl syscall
if it is defined.
This patch consolidates the semtimedop Linux implementation in only
one default file, sysdeps/unix/sysv/linux/semtimedop.c. If tries to use
the direct syscall if it is supported, otherwise will use the old ipc
multiplex mechanism.
Checked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (semtimedop): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/m68k/semtimedop.S: Remove file.
* sysdeps/unix/sysv/linux/s390/semtimedop.c: Reorganize headers and
add a comment about s390 syscall difference from default one.
* sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Use semtimedop
syscall if it is defined.
This patch add a direct call to semop syscall if it is supported by
kernel headers.
Checked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (semop): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (semop): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (semop): Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (semop): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (semop): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semop): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semop):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (semop):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semop): Likewise.
* sysdeps/unix/sysv/linux/semop.c (semop): Use semop syscall if it is
defined.
