Building MIPS sigaction (for ABIs other than o32) fails because of
"'restore_rt' used but never defined", arising from static functions
being defined in asms and referred to from C code. There is no
corresponding -W option for that warning, so this patch uses
-Wno-error for building sigaction.c.
* sysdeps/unix/sysv/linux/mips/mips64/Makefile
[$(subdir) == signal] (CFLAGS-sigaction.c): New variable.
[$(subdir) == nptl] (CFLAGS-sigaction.c): Likewise.
This satisfies a symbol reference created with:
.symver __libc_vfork, vfork@GLIBC_2.0
where `__libc_vfork' has not been defined or referenced. In this case
the `vfork@GLIBC_2.0' reference is supposed to be discarded, however a
bug present in GAS since forever causes an undefined symbol table entry
to be created. This in turn triggers a problem in the linker that can
manifest itself by link errors such as:
ld: libpthread.so: invalid string offset 2765592330 >= 5154 for section `.dynstr'
The GAS and linker bugs need to be resolved, but we can avoid them too
by providing a `__libc_vfork' definition just like our other platforms.
[BZ #17485]
* sysdeps/unix/sysv/linux/mips/vfork.S (__libc_vfork): Define.
This patch eliminates the mixture of SONAME information in
shlib-versions files and SONAME information used to generate
gnu/lib-names.h in makefiles, with the information in the makefiles
being removed so all this information comes from the shlib-versions
files.
So that gnu/lib-names.h supports multiple ABIs, it is changed to be
generated on the same basis as gnu/stubs.h: when there are multiple
ABIs, gnu/lib-names.h is a wrapper header (the same header installed
whatever ABI is being built) and separate headers such as
gnu/lib-names-64.h contain the substantive contents (only one such
header being installed by any glibc build).
The rules for building gnu/lib-names.h were moved from Makeconfig to
Makerules because they need to come after sysdeps makefiles are
included (now that "ifndef abi-variants" is a toplevel conditional on
the rules rather than $(abi-variants) being evaluated later inside the
commands for a rule).
Tested for x86_64 and x86 that the installed shared libraries are
unchanged by this patch, and examined the installed gnu/lib-names*.h
headers by hand. Also tested the case of a single ABI (where there is
just a single header installed, again like stubs.h) by hacking
abi-variants to empty for x86_64.
[BZ #14171]
* Makeconfig [$(build-shared) = yes]
($(common-objpfx)soversions.mk): Don't handle SONAMEs specified in
makefiles.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)gnu/lib-names.h): Remove rule.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)gnu/lib-names.stmp): Likewise. Split and moved
to Makerules.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(before-compile): Don't append $(common-objpfx)gnu/lib-names.h
here.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(common-generated): Don't append gnu/lib-names.h and
gnu/lib-names.stmp here.
* Makerules [$(build-shared) = yes && $(soversions.mk-done) = t]
(lib-names-h-abi): New variable.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(lib-names-stmp-abi): Likewise.
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] (before-compile): Append
$(common-objpfx)$(lib-names-h-abi).
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] (common-generated): Append gnu/lib-names.h.
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] (install-others-nosubdir): Depend on
$(inst_includedir)/$(lib-names-h-abi).
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] ($(common-objpfx)gnu/lib-names.h): New rule.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)$(lib-names-h-abi)): New rule.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)$(lib-names-stmp-abi)): Likewise.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(common-generated): Append $(lib-names-h-abi) and
$(lib-names-stmp-abi).
* scripts/lib-names.awk: Do not handle multi being set.
* sysdeps/unix/sysv/linux/aarch64/Makefile (abi-lp64-ld-soname):
Remove variable.
(abi-lp64_be-ld-soname): Likewise.
* sysdeps/unix/sysv/linux/arm/Makefile (abi-soft-ld-soname):
Likewise.
(abi-hard-ld-soname): Likewise.
* sysdeps/unix/sysv/linux/i386/shlib-versions: New file.
* sysdeps/unix/sysv/linux/mips/Makefile (abi-o32_soft-ld-soname):
Remove variable.
(abi-o32_hard-ld-soname): Likewise.
(abi-o32_soft_2008-ld-soname): Likewise.
(abi-o32_hard_2008-ld-soname): Likewise.
(abi-n32_soft-ld-soname): Likewise.
(abi-n32_hard-ld-soname): Likewise.
(abi-n32_soft_2008-ld-soname): Likewise.
(abi-n32_hard_2008-ld-soname): Likewise.
(abi-n64_soft-ld-soname): Likewise.
(abi-n64_hard-ld-soname): Likewise.
(abi-n64_soft_2008-ld-soname): Likewise.
(abi-n64_hard_2008-ld-soname): Likewise.
* sysdeps/unix/sysv/linux/powerpc/Makefile (abi-64-v1-ld-soname):
Likewise.
(abi-64-v2-ld-soname): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions: Add
ld.so entries.
* sysdeps/unix/sysv/linux/s390/Makefile (abi-64-ld-soname): Remove
variable.
* sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Add ld.so
entry.
* sysdeps/unix/sysv/linux/x86/Makefile (abi-32-ld-soname): Remove
variable.
(abi-64-ld-soname): Likewise.
(abi-x32-ld-soname): Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Add ld.so
entry.
* sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.
This patch removes the first column (patterns matching configuration
names) from shlib-versions, leaving shlib-versions entry selection
based purely on sysdeps directories.
An implication of this removal is that the default for any non-Linux
ports using NPTL will be the same SONAMEs for NPTL libraries as for
Linux (as those defaults, previously limited to .*-.*-linux.*, are
left in nptl/shlib-versions and nptl_db/shlib-versions).
Special host_os handling in configure.ac that was purely for
shlib-versions is removed. (The host_os setting is still used for
libc-abis - see
<https://sourceware.org/ml/libc-alpha/2014-01/msg00375.html> regarding
that - but no entries there are affected by this change.)
Tested on x86_64 and x86 that the installed shared libraries are
unchanged by this patch.
* scripts/soversions.awk: Do not handle configuration names.
* Makeconfig ($(common-objpfx)soversions.i): Do not pass cpu,
vendor and os variables to soversions.awk.
* configure.ac: Do not modify gnu-* host_os.
* configure: Regenerated
* shlib-versions: Remove first column with configuration names.
* nptl/shlib-versions: Likewise.
* nptl_db/shlib-versions: Likewise.
* sysdeps/hppa/shlib-versions: Likewise.
* sysdeps/m68k/shlib-versions: Likewise.
* sysdeps/mach/hurd/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/aarch64/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/alpha/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/arm/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/hppa/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/ia64/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/microblaze/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/mips/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/sh/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/tile/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.
libidn/ChangeLog:
* shlib-versions: Remove first column with configuration names.
This patch continues removing architecture-specific cases from
non-architecture-specific files by moving the logic to use directories
such as /lib64 out of sysdeps/gnu/configure.ac.
A new macro LIBC_SLIBDIR_RTLDDIR is created that sysdeps configure
scripts can use to declare the library directories to be used; the
logic was previously duplicated in configure fragments for aarch64,
mips and x32 as well as in sysdeps/gnu/configure.ac. This macro is
used directly in sysdeps/gnu/configure.ac only to provide the /lib
default (the logic saying that with --prefix=/usr shared libraries go
in /lib not /usr/lib); the architecture cases formerly there are moved
into various new or existing configure.ac files. The new macro is
also used in the various architecture fragments that already had such
logic. In the x32 there was previously a configure fragment, but it
was a directly written one without a .ac file; now a .ac file is used
there instead to generate configure.
Tested x86_64 that the installed shared libraries, and the directory
structure of the installation, are unchanged by this patch.
There is an old bug report - bug 6441 - about library directories
changing after reconfiguring. If this is still applicable - and I
haven't attempted to confirm it or review the old patch pointed to in
that bug - then this patch should reduce the number of places needing
changing in any fix.
* aclocal.m4 (LIBC_SLIBDIR_RTLDDIR): New macro.
* sysdeps/gnu/configure.ac: Use LIBC_SLIBDIR_RTLDDIR. Remove
cases for individual architectures.
* sysdeps/gnu/configure: Regenerated.
* sysdeps/unix/sysv/linux/aarch64/configure.ac: Use
LIBC_SLIBDIR_RTLDDIR.
* sysdeps/unix/sysv/linux/aarch64/configure: Regenerated.
* sysdeps/unix/sysv/linux/mips/configure.ac: Use
LIBC_SLIBDIR_RTLDDIR.
* sysdeps/unix/sysv/linux/mips/configure: Regenerated.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/configure.ac: Use
LIBC_SLIBDIR_RTLDDIR.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/configure:
Regenerated.
* sysdeps/unix/sysv/linux/s390/s390-64/configure.ac: New file.
* sysdeps/unix/sysv/linux/s390/s390-64/configure: New generated
file.
* sysdeps/unix/sysv/linux/sparc/sparc64/configure.ac: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/configure: New generated
file.
* sysdeps/unix/sysv/linux/x86_64/64/configure.ac: New file.
* sysdeps/unix/sysv/linux/x86_64/64/configure: New generated file.
* sysdeps/unix/sysv/linux/x86_64/x32/configure.ac: New file.
* sysdeps/unix/sysv/linux/x86_64/x32/configure: Generate.
Various architectures have files such as sysdeps/<arch>/shlib-versions
whose contents are in fact entirely Linux-specific, relating only to
the symbol / shared library versions for the port to Linux on that
architecture, when any future port to a different OS on that
architecture would use the symbol version of the glibc release it goes
in, as standard for new ports.
This patch moves such files under sysdeps/unix/sysv/linux/, merging in
the contents of sysdeps/<arch>/nptl/shlib-versions in the process.
The only bits not moved are those relating to libgcc_s versions, which
don't appear OS-specific in the same way that glibc's symbol versions
so. It deliberately does not change the regular expressions given for
matching configurations in each file; some match only Linux although
not Linux-specific, or match other OSes although Linux-specific. It
is with a view to at least the following further cleanups:
* Move architecture-specific content from the toplevel shlib-versions
and nptl/shlib-versions into sysdeps shlib-versions files, so
eliminating another difference between ex-ports and non-ex-ports
architectures.
* Likewise, for OS-specific content in shlib-versions files.
* At that point, the first field in shlib-versions files (the regular
expression matching a configuration triplet) should be redundant, so
eliminate that field and leave shlib-versions selection working
purely on a sysdeps basis (with limited use of %ifdef in
shlib-versions files when needed) rather than having its own
separate mechanism to select what configuration information is
relevant.
* Move the build of gnu/lib-names.h to a similar mechanism to that
used for gnu/stubs.h (each library build installing a version of the
header specifically for that build), so we can eliminate the
duplication of soname information in the makefiles and get it purely
from shlib-versions files again.
There may be other cleanups possible as well (in particular, I'm not
sure that all cases where the same "Earliest symbol set" information
is repeated for many different libraries actually should need to
repeat it rather than specifying it just once for DEFAULT for the
given configuration, and separately specifying any non-default choices
of soname).
Tested x86_64 that the installed shared libraries are unchanged by
this patch.
* sysdeps/aarch64/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/aarch64/shlib-versions: ... here.
* sysdeps/alpha/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/alpha/shlib-versions: ... here.
* sysdeps/arm/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/arm/shlib-versions: ... here.
* sysdeps/hppa/shlib-versions: Move all contents except for
libgcc_s entry to ...
* sysdeps/unix/sysv/linux/hppa/shlib-versions: ... here. Merge in
entry from ...
* sysdeps/hppa/nptl/shlib-versions: ... here. Remove file.
* sysdeps/ia64/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/ia64/shlib-versions: ... here. Merge in
entry from ...
* sysdeps/ia64/nptl/shlib-versions: ... here. Remove file.
* sysdeps/m68k/coldfire/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/m68k/coldfire/shlib-versions: ... here.
* sysdeps/microblaze/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/microblaze/shlib-versions: ... here.
* sysdeps/mips/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/mips/shlib-versions: ... here. Merge in
entry from ...
* sysdeps/mips/nptl/shlib-versions: ... here. Remove file.
* sysdeps/tile/shlib-versions: Move to ...
* sysdeps/unix/sysv/linux/tile/shlib-versions: ... here.
* sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Merge in entry
from ...
* sysdeps/x86_64/64/shlib-versions: ... here. Remove file.
* sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Merge in
entry from ...
* sysdeps/x86_64/x32/shlib-versions: ... here. Remove file.
The 64-bit MIPS ABIs involve the caller setting up t9 ($25) to the
address of the called function, and the called function then using
this in a .cpsetup directive to compute gp. The .cpsetup directive
needs to name the function to which t9 points for this purpose. In
the definition of *_nocancel functions, the directive pointed to the
normal entry point rather than the _nocancel one, resulting in
segfaults when the _nocancel functions were used. This patch corrects
the function name used in the directive. (It seems the bug was latent
until Roland's not-cancel.h unification, with the _nocancel entry
points not previously being used - so not user-visible in a release,
so no Bugzilla entry required.)
Tested mips64 sufficiently to confirm the previously seen segfaults
are fixed.
* sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h
[__PIC__] (PSEUDO): Use name of _nocancel entry point in
corresponding .cpsetup call.
This patch cleans up for __ASSUME_ATFCTS now always being true for the
supported Linux kernel versions by removing conditional code in
sysdeps/unix/sysv/linux. Several fchownat.c files that were only
present because of differences in the fallback syscalls used
(depending on the architecture-specific names of chown-related
syscalls for 32-bit uids) are removed. Files that looks like they
could be replaced by syscalls.list entries have the standard "Consider
moving to syscalls.list." comment (see bug 14138) added. Conditionals
on the relevant __NR_* syscall numbers being defined are also removed,
since my analysis indicated that the relevant syscalls are always
defined for all relevant kernel versions using any affected file.
Much of the removed fallback code had unbounded stack allocations, so
this reduces the number of cases to consider for anyone reviewing uses
of alloca and VLAs in glibc.
There remain tests of __ASSUME_ATFCTS in io/openat.c (to determine
whether to define __have_atfcts) and sysdeps/posix/getcwd.c (which
also uses __have_atfcts); thus, the definition of __ASSUME_ATFCTS
remains in kernel-features.h. The logical condition relevant there is
whether openat64_not_cancel_3 is known to work. Hurd doesn't use this
version of getcwd at all, so the conditionals in getcwd.c are always
true in glibc. However, this code is also used in gnulib. So the
best way to deal with the conditionals there may be for gnulib people
to deal with merging all relevant changes in both directions between
the glibc and gnulib versions of this file, at the end of which the
openat conditionals should be in whatever form is best for gnulib, and
hardcoded in the _LIBC case to having openat supported.
Tested by comparing before-and-after disassembly of installed
(stripped) shared libraries, on x86_64 and x86. On x86 the patch made
no change to the disassembly; on x86_64, the only changes were in
readlinkat, where formerly the return value from the readlinkat
syscall was stored in an int variable before being converted to
ssize_t for the return, and now the return value is returned directly
without truncation to int. I think it's clearly correct not to
truncate the return value (although I also think the truncation would
not have been a user-visible bug because the kernel would never have
returned a value it could have affected).
* include/fcntl.h (__atfct_seterrno): Remove prototype.
(__atfct_seterrno_2): Likewise.
* sysdeps/unix/sysv/linux/alpha/dl-fxstatat64.c: Do not include
<kernel-features.h>.
(__ASSUME_ATFCTS): Do not undefine and redefine.
* sysdeps/unix/sysv/linux/alpha/fxstatat.c [__ASSUME_ATFCTS]
(__have_atfcts): Remove conditional definition.
(__fxstatat([__NR_fstatat64]: Make code unconditional.
(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code and code
unreachable if [__ASSUME_ATFCTS].
* sysdeps/unix/sysv/linux/dl-fxstatat64.c (__ASSUME_ATFCTS): Do
not undefine and redefine.
* sysdeps/unix/sysv/linux/faccessat.c: Do not include
<kernel-features.h>.
(faccessat) [__NR_faccessat]: Make code unconditional.
(faccessat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/fchmodat.c: Do not include
<kernel-features.h>.
(fchmodat) [__NR_fchmodat]: Make code unconditional.
(fchmodat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/fchownat.c: Do not include
<kernel-features.h>.
(fchownat) [__NR_fchownat]: Make code unconditional.
(fchownat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/futimesat.c: Do not include
<kernel-features.h>.
(futimesat) [__NR_futimesat]: Make code unconditional.
(futimesat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/fxstatat.c: Do not include
<kernel-features.h>.
(__fxstatat) [__NR_newfstatat]: Make code unconditional.
(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/fxstatat64.c: Do not include
<kernel-features.h>.
(__fxstatat64) [__NR_fstatat64]: Make code unconditional.
(__fxstatat64) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/i386/fchownat.c: Remove file.
* sysdeps/unix/sysv/linux/i386/fxstatat.c: Do not include
<kernel-features.h>.
(__fxstatat) [__NR_fstatat64]: Make code unconditional.
(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/linkat.c: Do not include
<kernel-features.h>.
(linkat) [__NR_linkat]: Make code unconditional.
(linkat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/m68k/fchownat.c: Remove file.
* sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c: Do not include
<kernel-features.h>.
(__fxstatat64) [__NR_newfstatat]: Make code unconditional.
(__fxstatat64) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/mkdirat.c: Do not include
<kernel-features.h>.
(mkdirat) [__NR_mkdirat]: Make code unconditional.
(mkdirat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/openat.c: Do not include
<kernel-features.h>.
[!__ASSUME_ATFCTS] (__atfct_seterrno): Remove function.
[!__ASSUME_ATFCTS] (__have_atfcts): Remove variable.
(OPENAT_NOT_CANCEL) [__NR_openat]: Make code unconditional.
(OPENAT_NOT_CANCEL) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/powerpc/fchownat.c: Remove file.
* sysdeps/unix/sysv/linux/readlinkat.c: Do not include
<kernel-features.h>.
(readlinkat) [__NR_readlinkat]: Make code unconditional.
(readlinkat) [!__ASSUME_ATFCTS]: Remove conditional code. Return
result of INLINE_SYSCALL directly, not via int variable.
* sysdeps/unix/sysv/linux/renameat.c: Do not include
<kernel-features.h>.
[!__ASSUME_ATFCTS] (__atfct_seterrno_2): Remove function.
(renameat) [__NR_renameat]: Make code unconditional.
(renameat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c: Remove file.
* sysdeps/unix/sysv/linux/sh/fchownat.c: Remove file.
* sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c: Remove file.
* sysdeps/unix/sysv/linux/sparc/sparc64/dl-fxstatat64.c
(__ASSUME_ATFCTS): Do not undefine and redefine.
* sysdeps/unix/sysv/linux/symlinkat.c: Do not include
<kernel-features.h>.
(symlinkat) [__NR_symlinkat]: Make code unconditional.
(symlinkat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/unlinkat.c: Do not include
<kernel-features.h>.
(unlinkat) [__NR_unlinkat]: Make code unconditional.
(unlinkat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/wordsize-64/dl-fxstatat64.c
(__ASSUME_ATFCTS): Do not undefine and redefine.
* sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c: Do not include
<kernel-features.h>.
(__fxstatat) [__NR_newfstatat]: Make code unconditional.
(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code.
* sysdeps/unix/sysv/linux/xmknodat.c: Do not include
<kernel-features.h>.
(__xmknodat) [__NR_mknodat]: Make code unconditional.
(__xmknodat) [!__ASSUME_ATFCTS]: Remove conditional code.
This patch relies on the C version of the rwlocks posted earlier.
With C rwlocks it is very straight forward to do adaptive elision
using TSX. It is based on the infrastructure added earlier
for mutexes, but uses its own elision macros. The macros
are fairly general purpose and could be used for other
elision purposes too.
This version is much cleaner than the earlier assembler based
version, and in particular implements adaptation which makes
it safer.
I changed the behavior slightly to not require any changes
in the test suite and fully conform to all expected
behaviors (generally at the cost of not eliding in
various situations). In particular this means the timedlock
variants are not elided. Nested trylock aborts.
This patch reduces duplication between different architectures'
kernel-features.h files by making the architecture-independent file
define various macros unconditionally (instead of only for a
particular list of architectures), with the architecture-specific
files then undefining the macros if necessary.
Specifically, __ASSUME_O_CLOEXEC (O_CLOEXEC flag to open) and
__ASSUME_SOCK_CLOEXEC (SOCK_NONBLOCK and SOCK_CLOEXEC flags to socket)
are supported on all architectures as of 2.6.32 or the minimum kernel
version for the architecture if later. For __ASSUME_IN_NONBLOCK,
__ASSUME_PIPE2, __ASSUME_EVENTFD2, __ASSUME_SIGNALFD4 and
__ASSUME_DUP3, the relevant syscalls were added for alpha in 2.6.33
but otherwise the features are available as of 2.6.32. For
__ASSUME_UTIMES, support is everywhere in 2.6.32 except for
asm-generic architectures and hppa.
Although those were the main cases of duplication among
kernel-features.h files, some other cases of unnecessary definitions
were also cleaned up: the hppa file defined various macros that were
either no longer used at all, or defined by the main file by default
anyway, the ia64 file had duplicative definitions of __ASSUME_PSELECT
and __ASSUME_PPOLL, while mips had such a definition of
__ASSUME_IPC64.
Really, rather than being defined in the main file then undefined for
asm-generic architectures, __ASSUME_UTIMES should become an
hppa-specific macro. Given that __ASSUME_ATFCTS and
__ASSUME_UTIMENSAT are now always true, the only live __ASSUME_UTIMES
conditional is in sysdeps/unix/sysv/linux/utimes.c, which is not used
for asm-generic architectures. I think the desired state would be an
hppa-specific file (that includes sysdeps/unix/sysv/linux/utimes.c if
__ASSUME_UTIMES, and otherwise has fallback code), with the fallback
code being removed from the main utimes.c. But I think that's most
reasonably a separate cleanup once __ASSUME_ATFCTS and
__ASSUME_UTIMESAT have both had conditional code cleaned up.
Given this patch, I think it's straightforward to move non-ex-ports
architectures to having their own kernel-features.h files, like
ex-ports architectures, rather than conditionals in the main file
(i.e., such a move won't require the architecture-specific file to
contain anything that isn't genuinely architecture-specific), and
would encourage architecture maintainers to do so.
Tested x86_64 that the installed shared libraries are unchanged by
this patch. Note that on some architectures this *will* cause
__ASSUME_* macros to be defined in cases where they weren't previously
but should have been (but this is just optimization, not a fix to a
user-visible bug, so doesn't need a bug report in Bugzilla).
* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_UTIMES):
Define unconditionally.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_DUP3): Do not define.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_UTIMES): Undefine.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_UTIMES): Do not define.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Undefine if [__LINUX_KERNEL_VERSION <
0x020621] instead of defining if [__LINUX_KERNEL_VERSION >=
0x020621].
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_DUP3): Undefine.
* sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_UTIMES):
Do not define.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
(__ASSUME_32BITUIDS): Likewise.
(__ASSUME_TRUNCATE64_SYSCALL): Likewise.
(__ASSUME_IPC64): Likewise.
(__ASSUME_ST_INO_64_BIT): Likewise.
(__ASSUME_GETDENTS64_SYSCALL): Likewise.
[__LINUX_KERNEL_VERSION < 0x030e00] (__ASSUME_UTIMES): Undefine.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
(__ASSUME_UTIMES): Do not define.
(__ASSUME_PSELECT): Likewise.
(__ASSUME_PPOLL): Likewise.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_UTIMES): Likewise.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_UTIMES): Likewise.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_IPC64):
Likewise.
(__ASSUME_UTIMES): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
(__ASSUME_UTIMES): Undefine.
This patch does some initial cleanup, following the move to 2.6.32
minimum kernel version, by removing __LINUX_KERNEL_VERSION
conditionals that are now always-true or always-false. In the case of
__ASSUME_ARG_MAX_STACK_BASED, where the conditional used a kernel
version that was itself in a macro, the associated sysconf.c code is
also cleaned up and __ASSUME_ARG_MAX_STACK_BASED removed completely.
Tested x86_64 that disassembly of installed shared libraries is
unchanged by the patch.
* sysdeps/unix/sysv/linux/kernel-features.h [__s390__]
(__ASSUME_UTIMES): Do not condition on kernel version.
(__ASSUME_PSELECT): Define unconditionally.
(__ASSUME_PPOLL): Likewise.
(__ASSUME_ATFCTS): Likewise.
(__ASSUME_SET_ROBUST_LIST): Do not condition on kernel version.
(__ASSUME_COMPLETE_READV_WRITEV): Define unconditionally.
(__ASSUME_FUTEX_LOCK_PI): Do not condition on kernel version.
(__ASSUME_UTIMENSAT): Define unconditionally.
(__ASSUME_PRIVATE_FUTEX): Likewise.
(__ASSUME_FALLOCATE): Likewise.
(__ASSUME_O_CLOEXEC): Likewise.
(__LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL): Remove.
(__ASSUME_ARG_MAX_STACK_BASED): Likewise.
(__ASSUME_ADJ_OFFSET_SS_READ): Define unconditionally.
(__ASSUME_SOCK_CLOEXEC): Do not condition on kernel version.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
[__x86_64__ || __sparc__] (__ASSUME_ACCEPT4_SYSCALL): Likewise.
(__ASSUME_FUTEX_CLOCK_REALTIME): Define unconditionally.
(__ASSUME_AT_RANDOM): Likewise.
(__ASSUME_PREADV): Likewise.
(__ASSUME_PWRITEV): Likewise.
(__ASSUME_REQUEUE_PI): Do not condition on kernel version.
(__ASSUME_F_GETOWN_EX): Define unconditionally.
(__ASSUME_XFS_RESTRICTED_CHOWN): Likewise.
* sysdeps/unix/sysv/linux/sysconf.c (__sysconf)
[!__ASSUME_ARG_MAX_STACK_BASED]: Remove conditional code.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_O_CLOEXEC): Define unconditionally.
(__ASSUME_PSELECT): Do not undefine conditionally.
(__ASSUME_PPOLL): Likewise.
(__ASSUME_ATFCTS): Likewise.
(__ASSUME_SET_ROBUST_LIST): Likewise.
(__ASSUME_UTIMENSAT): Likewise.
(__ASSUME_FDATASYNC): Define unconditionally.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_SIGFRAME_V2): Likewise.
)__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_PSELECT): Do not undefine conditionally.
(__ASSUME_PPOLL): Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
(__ASSUME_PSELECT): Define unconditionally.
(__ASSUME_PPOLL): Likewise.
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_O_CLOEXEC): Likewise.
(__ASSUME_SOCK_CLOEXEC): Likewise.
(__ASSUME_IN_NONBLOCK): Likewise.
(__ASSUME_PIPE2): Likewise.
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_DUP3): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
(__ASSUME_EVENTFD2): Likewise.
(__ASSUME_SIGNALFD4): Likewise.
(__ASSUME_ACCEPT4_SYSCALL): Likewise.
[BZ #15215] This unifies various pthread_once architecture-specific
implementations which were using the same algorithm with slightly different
implementations. It also adds missing memory barriers that are required for
correctness.
This patch moves the __PTHREAD_SPINS definition to arch specific header
since pthread_mutex_t layout is also arch specific. This leads to no
need to defining __PTHREAD_MUTEX_HAVE_ELISION and thus removing of the
undefined compiler warning.
This patch continues fixing __ASSUME_* issues in preparation for
moving to a 2.6.32 minimum kernel version by addressing assumptions on
robust mutex and PI futex support availability. Those assumptions are
bug 9894, but to be clear this patch does not address all the issues
from that bug about wrong version assumptions, only those still
applicable for --enable-kernel=2.6.32 or later (with the expectation
that the move to that minimum kernel will obsolete the other parts of
the bug). The patch is independent of
<https://sourceware.org/ml/libc-alpha/2014-03/msg00585.html>, my other
pending-review patch preparing for the kernel version change; the two
together complete all the changes I believe are needed in preparation
regarding any macro in sysdeps/unix/sysv/linux/kernel-features.h that
would be affected by such a change. (I have not checked the
correctness of macros whose conditions are unaffected by such a
change, or macros only defined in other kernel-features.h files.)
As discussed in that bug, robust mutexes and PI futexes need
futex_atomic_cmpxchg_inatomic to be implemented, in addition to
certain syscalls needed for robust mutexes (and
architecture-independent kernel pieces for all the features in
question). That is, as I understand it, they need
futex_atomic_cmpxchg_inatomic to *work* (not return an ENOSYS error).
The issues identified in my analysis relate to ARM, M68K, MicroBlaze,
MIPS and SPARC.
On ARM, whether futex_atomic_cmpxchg_inatomic works depends on the
kernel configuration. As of 3.13, the condition for *not* working is
CONFIG_CPU_USE_DOMAINS && CONFIG_SMP. As of 2.6.32 it was simply
CONFIG_SMP that meant the feature was not implemented. I don't know
if there are any circumstances in which we can say "we can assume a
userspace glibc binary built with these options will never run on a
kernel with the problematic configuration", but at least for now I'm
just undefining the relevant __ASSUME_* macros for ARM.
On M68K, two of the three macros are undefined for kernels before
3.10, but as far as I can see __ASSUME_FUTEX_LOCK_PI is in the same
group needing futex_atomic_cmpxchg_inatomic support and so should be
undefined as well.
On MicroBlaze the required support was added in 2.6.33.
On MIPS, the support depends on cpu_has_llsc in the kernel - that is,
actual hardware LL/SC support (GCC and glibc for MIPS GNU/Linux rely
on the instructions being supported in some way, but it may be kernel
emulation; futex_atomic_cmpxchg_inatomic doesn't work with that
emulation). The same condition as in GCC for indicating LL/SC support
may not be available is used for undefining the macros in glibc,
__mips == 1 || defined _MIPS_ARCH_R5900. (Maybe we could in fact
desupport MIPS processors without the hardware support in glibc.)
On SPARC, 32-bit kernels don't support futex_atomic_cmpxchg_inatomic;
__arch64__ || __sparc_v9__ is used as the condition for binaries that
won't run on 32-bit kernels.
This patch is not tested beyond the sanity check of an x86_64 build.
[BZ #9894]
* sysdeps/unix/sysv/linux/kernel-features.h
[__sparc__ && !__arch64__ && !__sparc_v9__]
(__ASSUME_SET_ROBUST_LIST): Do not define.
[__sparc__ && !__arch64__ && !__sparc_v9__]
(__ASSUME_FUTEX_LOCK_PI): Likewise.
[__sparc__ && !__arch64__ && !__sparc_v9__] (__ASSUME_REQUEUE_PI):
Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_FUTEX_LOCK_PI): Undefine.
(__ASSUME_REQUEUE_PI): Likewise.
(__ASSUME_SET_ROBUST_LIST): Likewise.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
[__LINUX_KERNEL_VERSION < 0x030a00] (__ASSUME_FUTEX_LOCK_PI):
Undefine.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_FUTEX_LOCK_PI):
Likewise.
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_REQUEUE_PI):
Likewise.
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_SET_ROBUST_LIST):
Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_FUTEX_LOCK_PI):
Undefine.
[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_REQUEUE_PI): Likewise.
[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_SET_ROBUST_LIST):
Likewise.
This patch fixes -Wundef warnings related to the _ABI* macros on MIPS.
GCC predefines only the _ABI* macro related to the ABI actually in
use, meaning that a conditional such as "#if _MIPS_SIM == _ABI64" is
true only for the ABI in question (all the macros are nonzero), but
produces a -Wundef warning for the other ABIs. The normal approach to
using these macros is to include <sgidefs.h>, which ensures that all
three _ABI* macros are defined rather than just one; this patch does
so in the places that caused warnings (the bulk of the warnings
arising from <bits/wordsize.h>). Tested that the warnings are fixed.
* sysdeps/mips/bits/wordsize.h: Include <sgidefs.h>.
* sysdeps/unix/sysv/linux/mips/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/setrlimit64.c: Likewise.
Similar to the issues for accept4 and recvmmsg, __ASSUME_SENDMMSG is
also confused about whether it relates to function availability or
socketcall operation availability, and the conditions for the
definition are always wrong (sendmmsg appeared in Linux kernel 3.0,
not 2.6.39); this is now bug 16611.
This patch splits the macro into separate macros like those for
accept4 and recvmmsg, defining them for appropriate kernel versions.
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16611]
* sysdeps/unix/sysv/linux/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000 && __ASSUME_SOCKETCALL]
(__ASSUME_SENDMMSG_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION >= 0x030000 && (__i386__ || __x86_64__ ||
__powerpc__ || __sh__ || __sparc__)] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
[__i386__ || __powerpc__ || __sh__ || __sparc__]
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_SENDMMSG_SOCKETCALL || __ASSUME_SENDMMSG_SYSCALL]
(__ASSUME_SENDMMSG): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x020627] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL): Define.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030200] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/internal_sendmmsg.S [__ASSUME_SOCKETCALL
&& !__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_SENDMMSG_SYSCALL] (__NR_sendmmsg): Undefine.
[__ASSUME_SENDMMSG]: Change conditionals to
[__ASSUME_SENDMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_SENDMMSG_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030100] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/sendmmsg.c [__ASSUME_SOCKETCALL &&
!__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_SENDMMSG_SYSCALL] (__NR_sendmmsg): Undefine.
[!__ASSUME_SENDMMSG]: Change conditional to
[!__ASSUME_SENDMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/tile/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030100] (__ASSUME_SENDMMSG_SYSCALL):
Define.
Similar to the issues for accept4, __ASSUME_RECVMMSG is also confused
about whether it relates to function availability or socketcall
operation availability; this is now bug 16610.
Nothing actually tests __ASSUME_RECVMMSG for function availability,
but implicit in the definition in kernel-features.h is the idea that
it makes sense when the syscall is available and socketcall is not
being used. As with accept4, there are architectures where the
syscall was added later than the socketcall operation, meaning that
assuming glibc is built with recent enough kernel headers, it does not
attempt to use socketcall for these operations and __ASSUME_RECVMMSG
gets defined for kernels >= 2.6.33 even when the syscall was only
added later.
This patch splits the macro into separate macros like those used for
accept4; having similar macro structure in both cases (and for
sendmmsg once I've dealt with that) seems likely to be less confusing
than having a different structure on the basis of nothing actually
needing to assume the recvmmsg function works. Appropriate
definitions are added for all architectures.
Architecture-specific note: Tile's kernel-features.h says "TILE glibc
support starts with 2.6.36", which is accurate in that 2.6.36 was the
first kernel version with Tile support, and on that basis I've made
that header define __ASSUME_RECVMMSG_SYSCALL unconditionally.
However, Tile's configure.ac has arch_minimum_kernel=2.6.32. Since
arch_minimum_kernel is meant to reflect only kernel.org kernel
versions, I think that should change to 2.6.36. (If using glibc with
kernel versions from before a port went in kernel.org, it's your
responsibility to change arch_minimum_kernel in a local patch, and at
the same time to adjust any __ASSUME_* definitions that may not be
correct for your older kernel; for developing the official glibc it
should only ever be necessary to consider what official kernel.org
releases support.)
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16610]
* sysdeps/unix/sysv/linux/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621 && __ASSUME_SOCKETCALL]
(__ASSUME_RECVMMSG_SOCKETCALL): Define.
[(__LINUX_KERNEL_VERSION >= 0x020621 && (__i386__ || __x86_64__ ||
__sparc__)) || (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__
|| __sh__))] (__ASSUME_RECVMMSG_SYSCALL): Likewise.
[__i386__ || __sparc__]
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_RECVMMSG_SOCKETCALL || __ASSUME_RECVMMSG_SYSCALL]
(__ASSUME_RECVMMSG): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x020621] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL): Define.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/internal_recvmmsg.S [__ASSUME_SOCKETCALL
&& !__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_RECVMMSG_SYSCALL] (__NR_recvmmsg): Undefine.
[__ASSUME_RECVMMSG]: Change condition to
[__ASSUME_RECVMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Define.
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/recvmmsg.c [__ASSUME_SOCKETCALL &&
!__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_RECVMMSG_SYSCALL] (__NR_recvmmsg): Undefine.
[!__ASSUME_RECVMMSG]: Change condition to
[!__ASSUME_RECVMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL): Define.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_RECVMMSG_SYSCALL):
Define.
In <https://sourceware.org/ml/libc-alpha/2013-12/msg00008.html>,
Aurelien noted issues with the definition of __ASSUME_ACCEPT4, which I
discussed in more detail in
<https://sourceware.org/ml/libc-alpha/2013-12/msg00014.html>; these
are now bug 16609.
As previously noted, __ASSUME_ACCEPT4 is used in two ways:
* In OS-independent code, to mean "accept4 can be assumed to work
rather than fail with ENOSYS". It doesn't matter whether it's
implemented with socketcall or a separate syscall.
* In Linux-specific code, to mean "the socketcall multiplex syscall
can be assumed to handle the accept4 operation. When used in
Linux-specific code, it *never* refers to anything relating to the
accept4 syscall, only to the socketcall multiplexer.
This patch splits the macro into separate __ASSUME_ACCEPT4_SOCKETCALL,
__ASSUME_ACCEPT4_SYSCALL and __ASSUME_ACCEPT4 to clarify the different
cases involved. A macro __ASSUME_SOCKETCALL is added for convenience
in writing logic relating to all socketcall architectures. In
addition, to address the issue of architectures where socketcall
support for accept4 was added before a separate syscall was added (and
so the separate syscall should not be used unless known to be present
or fallback to socketcall is available), a fourth macro
__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL is added to indicate that the
syscall became available at the same time as socketcall support. This
is then used in the relevant places in a conditional determining
whether to undefine __NR_accept4 (the simple approach to avoiding the
syscall's presence causing problems; I didn't try to implement runtime
fallback from the syscall to socketcall).
Architecture-specific note: alpha defined __ASSUME_ACCEPT4 for 2.6.33
and later, but actually the syscall was added for alpha in 3.2, so
this patch uses the correct condition for __ASSUME_ACCEPT4_SYSCALL
there.
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16609]
* sysdeps/unix/sysv/linux/kernel-features.h [__i386__ ||
__powerpc__ || __s390__ || __sh__ || __sparc__]
(__ASSUME_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION && __ASSUME_SOCKETCALL]
(__ASSUME_ACCEPT4_SOCKETCALL): Likewise.
[(__LINUX_KERNEL_VERSION >= 0x02061c && (__x86_64__ || __sparc__))
|| (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__ ||
__sh__))] (__ASSUME_ACCEPT4_SYSCALL): Likewise.
[__sparc__] (__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_ACCEPT4_SOCKETCALL || __ASSUME_ACCEPT4_SYSCALL]
(__ASSUME_ACCEPT4): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x02061c && (__i386__ || __x86_64__ ||
__powerpc__ || __sparc__ || __s390__)] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/accept4.c [__ASSUME_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
[!__ASSUME_ACCEPT4]: Change condition to
[!__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL. Correct
condition to [__LINUX_KERNEL_VERSION >= 0x030200].
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020624] (__ASSUME_ACCEPT4): Change to
__ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/i386/accept4.S [__ASSUME_ACCEPT4]:
Change conditions to [__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_ACCEPT4): Change to
__ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/internal_accept4.S [__ASSUME_SOCKETCALL
&& !__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
[__ASSUME_ACCEPT4]: Change condition to
[__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION >= 0x02061c] (__ASSUME_ACCEPT4): Remove.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_SOCKETCALL): Define.
(__ASSUME_ACCEPT4): Remove.
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_ACCEPT4_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x02061f] (__ASSUME_ACCEPT4_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_ACCEPT4_SYSCALL):
Define.
I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply
git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips
and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.
Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).
* sysdeps/mips: Move directory from ports/sysdeps/mips.
* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
* sysdeps/unix/sysv/linux/mips: Move directory from
ports/sysdeps/unix/sysv/linux/mips.
* README: Update listing for mips-*-linux-gnu and
mips64-*-linux-gnu.
* sysdeps/mips: Move directory to ../sysdeps/mips.
* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
* sysdeps/unix/sysv/linux/mips: Move directory to
../sysdeps/unix/sysv/linux/mips.
* sysdeps/unix/sysv/linux/mips/getpagesize.c: New file.
2005-09-16 Andreas Jaeger <aj@suse.de>
[BZ #1047]
* sysdeps/unix/sysv/linux/mips/getpagesize.c: New file.
2005-09-16 Maciej W. Rozycki <macro@linux-mips.org>
[BZ #933]
* sysdeps/unix/sysv/linux/mips/brk.c (__brk): Load the number of
the syscall immediately before invocation.
* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Use
macros to handle GP.
* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall):
Likewise. Update inaccurate comments.
2005-09-16 Maciej W. Rozycki <macro@linux-mips.org>
[BZ #933]
* sysdeps/unix/sysv/linux/mips/brk.c (__brk): Load the number of
the syscall immediately before invocation.
* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Use
macros to handle GP.
* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall):
Likewise. Update inaccurate comments.
2004-11-11 Richard Sandiford <rsandifo@redhat.com>
[BZ #758]
* sysdeps/unix/sysv/linux/mips/configure.in (asm-unistd.h): Only
preprocess <asm/unistd.h> if it defines ABI-prefixed syscall names
like __NR_N32_open. Just include <asm/unistd.h> otherwise.
* sysdeps/unix/sysv/linux/mips/configure: Regenerate.
* sysdeps/unix/sysv/linux/mips/mips32/kern64/sysdep.h: Delete
* sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (SYS_ify): Use the
standard __NR prefix.
* sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (SYS_ify): Likewise.
* sysdeps/unix/sysv/linux/mips/Makefile (syscall-%.h): Rework so that
the output file is compatible with both pre-2.6 and 2.6 kernel headers.
Extract separate syscall lists for each ABI.
__NTH instead of __THROW in the inline definition.
* sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Likewise.
* sysdeps/mips/bits/dlfcn.h (RTLD_DEEPBIND): New macro.
* sysdeps/unix/sysv/linux/mips/bits/mman.h
(PROT_GROWSDOWN, PROT_GROWSUP): New macros.
* sysdeps/mips/sgidefs.h: Prevent <asm/sgidefs.h> from being
included by kernel headers and undo its settings if already
included. Define _ABIO32, _ABIN32 and _ABI64 if missing and use
them to define _MIPS_SIM_ABI32, _MIPS_SIM_NABI32 and
* sysdeps/unix/sysv/linux/mips/Makefile ($(objpfx)syscall-%.h):
Sort by syscalls. Make sure we get headers such as sgidefs.h from
the build tree before just-installed ones.
* sysdeps/mips/atomicity.h, sysdeps/mips/dl-machine.h,
sysdeps/mips/machine-gmon.h, sysdeps/mips/bits/setjmp.h,
sysdeps/mips/fpu/bits/mathdef.h,
sysdeps/mips/mips64/__longjmp.c,
sysdeps/mips/mips64/setjmp_aux.c,
sysdeps/unix/sysv/linux/mips/kernel_stat.h,
sysdeps/unix/sysv/linux/mips/pread.c,
sysdeps/unix/sysv/linux/mips/pread64.c,
sysdeps/unix/sysv/linux/mips/ptrace.c,
sysdeps/unix/sysv/linux/mips/pwrite.c,
sysdeps/unix/sysv/linux/mips/pwrite64.c,
sysdeps/unix/sysv/linux/mips/sigaction.c,
sysdeps/unix/sysv/linux/mips/sigcontextinfo.h,
sysdeps/unix/sysv/linux/mips/bits/fcntl.h,
sysdeps/unix/sysv/linux/mips/bits/sigcontext.h,
sysdeps/unix/sysv/linux/mips/bits/stat.h,
sysdeps/unix/sysv/linux/mips/sys/procfs.h,
sysdeps/unix/sysv/linux/mips/sys/ptrace.h,
sysdeps/unix/sysv/linux/mips/sys/tas.h,
sysdeps/unix/sysv/linux/mips/sys/ucontext.h,
sysdeps/unix/sysv/linux/mips/sys/user.h: Use standard names
for ABI macros, include sgidefs.h where appropriate.
sysdeps/unix/sysv/linux/mips/Makefile ($(objpfx)syscall-%.h):
Likewise.
sysdeps/unix/sysv/linux/mips/configure.in (asm-unistd.h):
Likewise.
sysdeps/unix/sysv/linux/mips/configure: Rebuilt.
syscall invocation.
* sysdeps/unix/sysv/linux/mips/pwrite64.c (__libc_pwrite64): Likewise.
* sysdeps/unix/sysv/linux/mips/pread.c (__libc_pread): Likewise.
Also, only assert off_t size is 4 for N32 and O32, and clean up
white space.
* sysdeps/unix/sysv/linux/mips/pwrite.c (__libc_pwrite): Likewise.
2003-06-25 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/cris/sysdep.h (INLINE_SYSCALL): Cast
result to long int so that extensions to long long int work.
Patch by Uwe Reimann <libc-alpha@pulsar.homelinux.net>.
2003-06-19 Jakub Jelinek <jakub@redhat.com>
* elf/ldconfig.c (main): Use add_system_dir instead of add_dir.
* sysdeps/generic/dl-cache.h (add_system_dir): Define.
* sysdeps/unix/sysv/linux/x86_64/dl-cache.h: Include sparc
dl-cache.h.
* sysdeps/unix/sysv/linux/s390/dl-cache.h: New file.
* sysdeps/unix/sysv/linux/mips/dl-cache.h: New file.
* sysdeps/unix/sysv/linux/powerpc/dl-cache.h: New file.
* sysdeps/unix/sysv/linux/sparc/dl-cache.h: New file.
* Makerules: Always use -MP together with -MD.
(sed-remove-dotot): Substitute $(..) also at start of line.
($(stdio_lim:h=st)): Use -MD instead of SUNPRO_DEPENDENCIES.
Generated defines with a single compiler call.
Use $(sed-remove-dotdot).
* mach/Makefile ($(objpfx)mach-syscalls.mk): Use -MD instead
of DEPENDENCIES_OUTPUT, and use $(sed-remove-objpfx).
* sysdeps/unix/sysv/linux/Makefile ($(objpfx)syscall-%.h):
Use -MD instead of SUNPRO_DEPENDENCIES, and use $(sed-remove-objpfx).
* sysdeps/unix/sysv/linux/mips/Makefile
($(objpfx)syscall-%.h): Likewise.
2003-04-13 Alexandre Oliva <aoliva@redhat.com>
* sysdeps/unix/sysv/linux/mips/profil-counter: New.
* sysdeps/unix/sysv/linux/mips/sigcontextinfo.h: Port to n32/n64.
* sysdeps/unix/sysv/linux/mips/bits/sigcontext.h: New.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h: Port to n32/n64.
(mcontext_t): Make it match the 32-bit mips kernel in o32.
* sysdeps/unix/sysv/linux/mips/sys/user.h: Bring in constants from
the mips and mips64 headers.
(struct user): Port to n32/n64.
2003-04-05 Alexandre Oliva <aoliva@redhat.com>
* sysdeps/unix/sysv/linux/mips/mips64/n32/ftruncate64.c: New.
* sysdeps/unix/sysv/linux/mips/mips64/n32/truncate64.c: New.
* sysdeps/unix/sysv/linux/kernel-features.h: fcntl64 is available
on mips n32.
* sysdeps/unix/sysv/linux/mips/kernel_stat.h: Explain why
XSTAT_IS_XSTAT64 must not be used for mips n64. Use 64-bit data
structure on n32 as well.
* sysdeps/unix/sysv/linux/mips/bits/stat.h: Use POSIX-compliant
data types on n32 and n64.
2003-03-25 Alexandre Oliva <aoliva@redhat.com>
* sysdeps/mips/sgidefs.h (_MIPS_ISA_MIPS32, _MIPS_ISA_MIPS64):
Define.
* sysdeps/mips/sys/asm.h: Test _MIPS_ISA against them on all
ISA tests.
(ALSZ, ALMASK, SZREG, REG_S, REG_L): Define based on ABI, not ISA.
(PTR_ADD, etc): Test _MIPS_SZPTR instead of _MIPS_SZLONG.
* sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Use _MIPS_SZPTR
to decide whether to add padding.
* sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Use _MIPS_SZPTR
to decide whether to add padding.
* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h (struct
old_kernel_sigaction): Likewise.
* sysdeps/mips/mips64/Implies: Move wordsize-64 to...
* sysdeps/mips/mips64/n64/Implies: New file.
* sysdeps/mips/mips64/n64/Makefile: New file.
* sysdeps/mips/mips64/n64/el/bits/endian.h: New file.
* sysdeps/mips/mips64/n32/Implies: New file.
* sysdeps/mips/mips64/n32/Makefile: New file.
* sysdeps/mips/mips64/n32/el/bits/endian.h: New file.
* sysdeps/unix/mips/mips64/n32/sysdep.h: New file.
* sysdeps/unix/mips/mips64/n64/sysdep.h: New file.
* sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h: New file.
* sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c: New file.
* sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h: New file.
* sysdeps/unix/sysv/linux/mips/mips64/ldconfig.h: New file.
* sysdeps/unix/sysv/linux/mips/mips64/llseek.c: New file.
* sysdeps/unix/sysv/linux/mips/mips64/recv.c: New file.
* sysdeps/unix/sysv/linux/mips/mips64/send.c: New file.
* sysdeps/unix/sysv/linux/mips/mips64/syscall.S: New file.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list: New file.
* sysdeps/unix/sysv/linux/mips/mips64/umount.c: New file.
* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S: New file.
* sysdeps/unix/sysv/linux/configure.in (libc_cv_slibdir): Use
lib64 for mips64/n64 and lib32 for mips64/n32.
(ldd_rewrite_script): Needed for all mips64 configurations.
* sysdeps/unix/sysv/linux/configure: Rebuilt.
* sysdeps/unix/sysv/linux/mips/mips64/ldd-rewrite.sed: New file.
* sysdeps/unix/sysv/linux/mips/mips64/Dist: New file.
* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h
(_KERNEL_NSIG_BPW): Define in terms of _MIPS_SZLONG.
* sysdeps/unix/sysv/linux/mips/sigaction.c: Define restore and
restore_rt functions. Use them.
2003-03-11 Ralf Baechle <ralf@linux-mips.org>
* sysdeps/unix/sysv/linux/mips/clone.S (__thread_start): Use jal
instead of jalr to invoke subroutine so restoring the $gp register
will work properly.
2003-01-14 Guido Guenther <agx@sigxcpu.org>
* sysdeps/unix/sysv/linux/mips/sysdep.h (INTERNAL_SYSCALL,
INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO,
INTERNAL_SYSCALL_ERROR_P, INLINE_SYSCALL): Define.
2003-01-14 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
(INTERNAL_SYSCALL): Make use of ERR parameter.
(INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO,
INTERNAL_SYSCALL_ERROR_P): Adjust accordingly.
(INLINE_SYSCALL): Make use of INTERNAL_SYSCALL.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: New file.
Patch by Denis Zaitsev <zzz@cd-club.ru>.
that %eax is modified. Reported by Denis Zaitsev <zzz@cd-club.ru>.
Check for the result overflowing off_t and fail with EOVERFLOW.
* libio/ioftell.c (_IO_ftell): Likewise.
* libio/iofgetpos.c (_IO_new_fgetpos): Likewise.
* login/logwtmp.c (logwtmp): If sizeof ut_tv != sizeof struct timeval,
use a temporary timeval on the stack for gettimeofday and copy it.
* login/logout.c (logout): Likewise.
Reported by Steven Munroe <sjmunroe@us.ibm.com>.
* sysdeps/unix/sysv/linux/bits/statfs.h (struct statfs):
Use __SWORD_TYPE instead of int for member types.
(struct statfs64): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/statfs.h: New file.
* sysdeps/unix/sysv/linux/s390/bits/statfs.h: New file.
* sysdeps/unix/sysv/linux/ia64/bits/statfs.h: File removed.
* sysdeps/unix/sysv/linux/sparc/bits/statfs.h: File removed.
* sysdeps/unix/sysv/linux/x86_64/bits/statfs.h: File removed.
* sysdeps/unix/sysv/linux/sparc/bits/statvfs.h: Moved to ...
* sysdeps/unix/sysv/linux/bits/statvfs.h: ... here.
(ST_NODIRATIME): Restore fixed value of 2048.
* sysdeps/unix/sysv/linux/alpha/bits/statvfs.h: File removed.
* sysdeps/unix/sysv/linux/ia64/bits/statvfs.h: File removed.
Rearranged <bits/types.h> definitions to reduce duplication.
* sysdeps/generic/bits/types.h: Rewritten, using macros from
<bits/wordsize.h> and new header <bits/typesizes.h>.
* posix/Makefile (headers): Add bits/typesizes.h here.
* sysdeps/generic/bits/typesizes.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h: New file.
* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h: New file.
* sysdeps/mach/hurd/bits/typesizes.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/types.h: File removed.
* sysdeps/unix/sysv/linux/bits/types.h: File removed.
* sysdeps/unix/sysv/linux/ia64/bits/types.h: File removed.
* sysdeps/unix/sysv/linux/mips/bits/types.h: File removed.
* sysdeps/unix/sysv/linux/s390/bits/types.h: File removed.
* sysdeps/unix/sysv/linux/sparc/bits/types.h: File removed.
* sysdeps/unix/sysv/linux/x86_64/bits/types.h: File removed.
* posix/sys/types.h [__USE_POSIX199506 || __USE_UNIX98]: Include
<bits/pthreadtypes.h> here, not in <bits/types.h>.
* signal/signal.h: Likewise.
* streams/stropts.h: Include <bits/xtitypes.h>.
* streams/Makefile (headers): Add bits/xtitypes.h here.
* sysdeps/generic/bits/xtitypes.h: New file.
* sysdeps/s390/bits/xtitypes.h: New file.
* sysdeps/ia64/bits/xtitypes.h: New file.
* sysdeps/x86_64/bits/xtitypes.h: New file.
* sysvipc/Makefile (headers): Add bits/ipctypes.h here.
* sysdeps/generic/bits/ipctypes.h: New file.
* sysdeps/mips/bits/ipctypes.h: New file.
* sysdeps/gnu/bits/shm.h: Include <bits/ipctypes.h>.
* sysdeps/gnu/bits/msq.h: Likewise.
* sysvipc/sys/ipc.h: Likewise.
2002-10-22 Roland McGrath <roland@redhat.com>
* sysdeps/generic/libc-tls.c (_dl_tls_static_used): New variable.
* sysdeps/generic/ldsodefs.h (struct rtld_global): New member
`_dl_tls_static_used'.
(TLS_STATIC_MIN): New macro.
* elf/dl-reloc.c [USE_TLS] (allocate_static_tls): New function.
(CHECK_STATIC_TLS): Use it.
changed from [USE_TLS && HAVE___THREAD].
* sysdeps/i386/dl-machine.h (elf_machine_type_class, elf_machine_rel):
Disable TLS relocs if [RTLD_BOOTSTRAP && !USE___THREAD].
* sysdeps/x86_64/dl-machine.h
(elf_machine_type_class, elf_machine_rela): Likewise.
* sysdeps/sh/dl-machine.h (elf_machine_type_class, elf_machine_rela):
Likewise.
* include/link.h (struct link_map): Remove member l_tls_tp_initialized.
* elf/rtld.c (_dl_start_final, dl_main): Don't use it.
(_dl_start): Conditionalize PT_TLS check on [USE___THREAD].
* sysdeps/i386/dl-tls.h (__TLS_GET_ADDR): Use ___tls_get_addr_internal
instead of ___tls_get_addr.
(___tls_get_addr_internal): Add attribute_hidden to decl.
* sysdeps/generic/ldsodefs.h (struct rtld_global): New variable
_dl_error_catch_tsd.
* elf/rtld.c (startup_error_tsd): New function.
(dl_main): Point _dl_error_catch_tsd at that.
* elf/dl-error.c: Don't use libc-tsd.h for DL_ERROR,
use new function pointer instead.
* elf/dl-tsd.c: New file.
* elf/Makefile (routines): Add it.
2002-10-07 Roland McGrath <roland@redhat.com>
* elf/dl-misc.c (_dl_debug_vdprintf): Use INTERNAL_SYSCALL macro for
writev if it's available. Otherwise if [RTLD_PRIVATE_ERRNO] then
take _dl_load_lock around calling __writev.
* sysdeps/unix/sysv/linux/i386/sysdep.h (INTERNAL_SYSCALL): New macro.
(INLINE_SYSCALL): Use that.
* sysdeps/generic/dl-sysdep.h: New file.
* sysdeps/mach/hurd/dl-sysdep.h: New file.
* sysdeps/generic/ldsodefs.h: Include <dl-sysdep.h>.
* include/errno.h [IS_IN_rtld]: Include <dl-sysdep.h> to define ...
[RTLD_PRIVATE_ERRNO]: Use a hidden global variable for errno and
access it directly.
* elf/dl-minimal.c (__errno_location): Removed.
* sysdeps/unix/i386/sysdep.S (__syscall_errno) [RTLD_PRIVATE_ERRNO]:
Use GOTOFF access for errno.
* sysdeps/unix/sysv/linux/i386/sysdep.h
[RTLD_PRIVATE_ERRNO] (SYSCALL_ERROR_HANDLER): Likewise.
* sysdeps/unix/x86_64/sysdep.S (__syscall_errno) [RTLD_PRIVATE_ERRNO]:
Use PC-relative access for errno.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h
[RTLD_PRIVATE_ERRNO] (SYSCALL_ERROR_HANDLER): Likewise.
* include/tls.h: New file.
(USE___THREAD): New macro.
Define to 1 under [USE_TLS && HAVE___THREAD] and only when compiling
libc or libpthread.
* sysdeps/unix/sysv/linux/i386/sysdep.h [USE___THREAD]: Conditional
changed from [USE_TLS && HAVE___THREAD].
* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
* sysdeps/unix/i386/sysdep.S: Likewise.
* sysdeps/unix/x86_64/sysdep.S: Likewise.
* include/errno.h: Likewise.
* include/netdb.h: Likewise.
* include/resolv.h: Likewise.
* sysdeps/generic/errno.c: New file.
* csu/Makefile (aux): New variable, list errno.
* sysdeps/unix/sysv/linux/i386/sysdep.S (errno, _errno): Remove defns.
* sysdeps/unix/sysv/linux/m68k/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/cris/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep.S: Likewise.
* sysdeps/unix/alpha/sysdep.S: Likewise.
* sysdeps/generic/start.c: Likewise.
* sysdeps/unix/start.c: Likewise.
* sysdeps/unix/arm/start.c: Likewise.
* sysdeps/unix/bsd/ultrix4/mips/start.S: Likewise.
* sysdeps/unix/sparc/start.c: Likewise.
* sysdeps/unix/sysv/irix4/start.c: Likewise.
* sysdeps/unix/sysv/linux/mips/sysdep.S: File removed.
* manual/search.texi (Tree Search Function, Hash Search Function):
Mention search.h clearly.
2002-10-05 Roland McGrath <roland@redhat.com>
* elf/dl-fxstat64.c: File removed.
* elf/dl-xstat64.c: File removed.
* elf/Makefile (rtld-routines): Remove them.
* sysdeps/unix/sysv/linux/xstat64.c: Remove RTLD_STAT64 conditionals.
Instead, use strong_alias instead of versioned_symbol in the
!SHLIB_COMPAT case.
* sysdeps/unix/sysv/linux/fxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/lxstat64.c: Likewise.
* include/shlib-compat.h
(SHLIB_COMPAT): Require that IS_IN_##lib be defined nonzero.
[! NOT_IN_libc] (IS_IN_libc): Define it.
* cppflags-iterator.mk (CPPFLAGS-$(cpp-src)): Use -Dx=1 not just -Dx.
* elf/Makefile (CPPFLAGS-.os): Likewise.
* sunrpc/rpc_main.c (main): Don't declare with noreturn attribute.
Return the status instead of calling exit.
* Makeconfig (CFLAGS): Prepend -std=gnu99.
* Makerules (+make-deps): Use $(CFLAGS) only for .c sources.
Remove superfluous rm command, whose @ plus make bugs hid
all these commands from the make output.
* include/stubs-prologue.h: New file. Give #error under #ifdef _LIBC.
* Makefile ($(inst_includedir)/gnu/stubs.h): Depend on it.
Use that file's contents instead of literal echo's for the prologue.
* include/features.h: Include <gnu/stubs.h> unconditionally.
* include/gnu/stubs.h: New file.
2002-09-30 Roland McGrath <roland@redhat.com>
* elf/rtld-Rules: New file.
* elf/Makefile ($(objpfx)librtld.map, $(objpfx)librtld.mk,
$(objpfx)rtld-libc.a): New targets.
(generated): Add them.
(reloc-link): Remove -o $@ from the variable.
($(objpfx)dl-allobjs.os): Add -o $@ after $(reloc-link).
(distribute): Add rtld-Rules.
(CPPFLAGS-.os): Define this instead of CFLAGS-.os.
* Makerules ($(+sysdir_pfx)sysd-rules): Emit rules for rtld-% targets.
(common-mostlyclean, common-clean): Clean up rtld-* files.
* sysdeps/unix/make-syscalls.sh: Add rtld-*.os target name to rules.
* sysdeps/generic/ldsodefs.h (__rtld_global_attribute__): Define.
(_rtld_global): Use it.
* sysdeps/gnu/Dist: Remove errlist-compat.c.
* sysdeps/gnu/Makefile (errlist-compat.c): Build this file in the
object directory. Pass all Versions files to the awk script.
* sysdeps/gnu/errlist-compat.c: Removed.
* sysdeps/gnu/errlist.awk: Use #errlist-compat comments from the
first Versions file in the search path which has them.
Allow multiple errlist symbol versions to have the same count of
errors.
* sysdeps/gnu/errlist-compat.awk: Include <errlist-compat.c> instead
of "errlist-compat.c".
* sysdeps/gnu/errlist.c: Regenerated.
* sysdeps/unix/sysv/linux/mips/Versions (libc): Add #errlist-compat
comments at GLIBC_2.0, GLIBC_2.1 and GLIBC_2.3.
* sysdeps/unix/sysv/linux/alpha/Versions: Likewise.
(librt): Add aio_cancel and aio_cancel64 as GLIBC_2.3.
* sysdeps/unix/sysv/linux/hppa/Versions: Likewise.
* sysdeps/unix/sysv/linux/sparc/Versions: New file.
* sysdeps/unix/sysv/linux/alpha/bits/errno.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/errno.h (ECANCELED): Define to
ECANCELLED if not defined by kernel headers.
* sysdeps/unix/sysv/linux/bits/errno.h: Don't redefine ECANCELED if
already defined by kernel headers.
* sysdeps/unix/sysv/linux/sparc/bits/errno.h: New file.
* sysdeps/pthread/aio_cancel.c: Don't include aio.h and its
aio_cancel64 renaming hack nor provide weak_alias if aio_cancel
is a macro.
* Versions.def (GLIBC_2.3) [librt]: Add.
* sysdeps/unix/sysv/linux/alpha/pipe.S: New file.
2002-08-28 Ulrich Drepper <drepper@redhat.com>
* include/libc-symbols.h [!__ASSEMBLER__] (declare_symbol_1): Add
missing comma to .type directive.
2002-08-28 Jakub Jelinek <jakub@redhat.com>
2002-07-02 H.J. Lu <hjl@gnu.org>
* sysdeps/mips/atomicity.h: Don't include <sgidefs.h>. Always
use ll/sc.
* sysdeps/unix/sysv/linux/mips/sys/tas.h: Likewise.
* sysdeps/unix/sysv/linux/configure.in: Set arch_minimum_kernel
to 2.4.0 for mips.
TLS fail if USE_TLS is not defined.
2001-11-15 H.J. Lu <hjl@gnu.org>
* sysdeps/unix/sysv/linux/mips/sys/procfs.h: Don't include
<signal.h>, <sys/ucontext.h> nor <asm/elf.h>. Updated for gdb.
* sysdeps/unix/sysv/linux/mips/sys/user.h: New.
2002-02-01 H.J. Lu <hjl@gnu.org>
* sysdeps/mips/atomicity.h (exchange_and_add): Use branch
likely.
(atomic_add): Likewise.
(compare_and_swap): Return 0 only when failed to compare. Use
branch likely.
* sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Use
branch likely.
2002-02-03 kaz Kojima <kkojima@rr.iij4u.or.jp>
* sysdeps/sh/dl-machine.h (elf_machine_rela): Fix a typo.
2002-02-02 Ulrich Drepper <drepper@redhat.com>
* elf/dl-minimal.c (__strsep): New minimal implementation.
2001-08-15 Ralf Baechle <ralf@gnu.org>
* sysdeps/unix/sysv/linux/mips/sys/sysmips.h: Make sysmips() prototype a
varargs prototype. Remove dependency from kernel header files.
* sysdeps/unix/sysv/linux/mips/bits/termios.h: General cleanup, use
__USE_MISC / __USE_XOPEN not __USE_BSD where appropriate.
* sysdeps/unix/sysv/linux/mips/configure.in: Define AC_SUBST to
empty to prevent junk from being generated.
sysdeps/unix/sysv/linux/mips/configure: Regenerated.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
Define for Arm, PowerPC and SH if kernel is 2.4.4 or newer.
* sysdeps/unix/sysv/linux/bits/socket.h (PF_WANPIPE): New, from
Linux 2.4.4.
(AF_WANPIPE): Likewise.
(MSG_MORE): New.
* sysdeps/unix/sysv/linux/alpha/bits/socket.h: Add same changes as
for Linux generic version.
* sysdeps/unix/sysv/linux/s390/s390-64/bits/socket.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/socket.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/socket.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/socket.h: Likewise.
* sysdeps/gnu/netinet/tcp.h (TCP_QUICKACK): New.
2001-04-10 Andreas Schwab <schwab@suse.de>
* math/libm-test.inc (csinh_test): Don't require the invalid
exception for csinh (x + iNaN), but make it optional.
2001-04-09 David Mosberger <davidm@hpl.hp.com>
* sysdeps/ia64/elf/start.S (_start): Add unwind directives.
* sysdeps/generic/entry.h [!__ASSEMBLY__]: Declare _start.
* sysdeps/ia64/elf/entry.h: New file.
* sysdeps/unix/sysv/linux/mips/entry.h [!__ASSEMBLY__]: Declare
__start.
* elf/rtld.c: Don't declare ENTRY_POINT. Use ENTRY_POINT instead
of &ENTRY_POINT.
* sysdeps/generic/dl-sysdep.c: Likewise.
* sysdeps/mach/hurd/dl-sysdep.c: Likewise.
* sysdeps/ia64/elf/start.S: Save base address of register backing
store in __libc_ia64_register_backing_store_base.
* Versions.def: Add libanl definition.
* shlig-versions: Add entry for libanl.
* resolv/Makefile (distribute): Add gai_misc.h and ga_test.c.
(routines): Add gai_sigqueue.
(extra-libs): Add libanl.
(libanl-routines): New variable.
Add rules to build libanl and ga_test.
* resolv/Versions [libc] (GLIBC_2.2.3): Add __gai_sigqueue.
[libanl]: New library.
* resolv/netdb.h: Add definitions for libanl.
* resolv/getaddrinfo_a.c: New file.
* resolv/gai_cancel.c: New file.
* resolv/gai_error.c: New file.
* resolv/gai_misc.c: New file.
* resolv/gai_misc.h: New file.
* resolv/gai_notify.c: New file.
* resolv/gai_suspend.c: New file.
* resolv/ga_test.c: New file.
* sysdeps/generic/gai_sigqueue.c: New file.
* sysdeps/unix/sysv/linux/gai_sigqueue.c: New file.
* sysdeps/generic/bits/siginfo.h: Allow __need_sigevent_t being defined
and provide only that definition.
* sysdeps/unix/sysv/linux/alpha/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/bits/siginfo.h: Likewise.
* rt/aio_misc.c: Fix typos in comments.
* rt/lio_listio.c: Pretty printing. Little optimization in request
list handling.
* elf/rtld.c: Remove commented out code.
* conform/data/sys/socket.h-data: Fix typos. Correct getsockopt,
recvfrom, send, and socketpair prototypes. Add allow lines.
* socket/sys/socket.h: Include <sys/uio.h>.
Don't use fancy __SOCKADDR_ARG definition unless __USE_GNU.
Fix type of second parameter of listen.
Don't declare isfdtype unless __USE_MISC.
* sysdeps/generic/listen.c: Fix type of second parameter of listen.
* sysdeps/mach/hurd/listen.c: Likewise.
* sysdeps/generic/bits/socket.h (struct sockaddr_storage): Define
ss_family and __ss_family.
* sysdeps/unix/sysv/aix/bits/socket.h: Likewise.
* sysdeps/unix/sysv/linux/bits/socket.h: Likewise.
(struct msghdr): Change type of msg_iovlen to int and type of
msg_controllen to socklen_t.
* sysdeps/unix/sysv/linux/alpha/bits/socket.h: New file.
* sysdeps/unix/sysv/linux/ia64/bits/socket.h: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/bits/socket.h: New file.
* sysdeps/unix/sysv/linux/mips/sysdep.h: New file.
* sysdeps/unix/sysv/linux/mips/sys/syscall.h: Removed.
* sysdeps/unix/mips/sysdep.h: Use SYS_ify.
Patches by "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>.
2000-11-20 Hiroyuki Machida <machida@sm.sony.co.jp>
* sysdeps/unix/sysv/linux/mips/clone.S: Fix comments.
* sysdeps/unix/sysv/linux/mips/kernel_stat.h (kernel_stat): Expand
time_t to 'long int' not, 'unsigned int'. Use 'long int' for
__unused? members.
* sysdeps/unix/sysv/linux/mips/bits/fcntl.h (O_NOFOLLOW): Use same
value defined in /usr/include/asm-mips/fcntl.h.
2000-09-16 Ralf Baechle <ralf@gnu.org>
* sysdeps/mips/dl-machine.h (_RTLD_PROLOGUE): Reformat. Declare
as function.
(_RTLD_EPILOGUE): Reformat. Declare size of entry function.
(ELF_MACHINE_BEFORE_RTLD_RELOC): Relocate the dynamic linker itself so
it will even work when not loaded to the standard address.
(RTLD_START): Reformat. Call _dl_start in a way that is safe even
before the dynamic linker itself is relocated.
2000-09-18 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/kernel-features.h: Always define
__ASSUME_32BITUIDS for MIPS.
* sysdeps/unix/sysv/linux/mips/ipc_priv.h: New file.
* sysdeps/unix/sysv/linux/mips/Dist: Add ipc_priv.h.
