signal.h defines the sigevent structure and constants if defined
__USE_POSIX199309 || defined __USE_XOPEN_EXTENDED. The
__USE_XOPEN_EXTENDED condition is incorrect; this structure does not
appear in XSI standards before Unix98 (which implies
__USE_POSIX199309). This patch fixes the conditionals accordingly
(the existing conditional is correct for siginfo_t, just not for
sigevent).
Tested for x86_64. This does not allow any conform/ XFAILs to be
removed because of other signal.h namespace bugs.
[BZ #21543]
* signal/signal.h: Only include <bits/types/sigevent_t.h> and
<bits/sigevent-consts.h> if [__USE_POSIX199309], not if
[__USE_XOPEN_EXTENDED].
This patch adds the missing compiler flags for correct pthread cancellation
on some architectures for the p{read,write}v2 implementation (52bd938169).
Checked on x86_64-linux-gnu and powerpc64le-linux-gnu.
* misc/Makefile (CFLAGS-preadv2.c): New rule.
(CFLAGS-preadv64v2.c): Likewise.
(CFLAGS-pwritev2.c): Likewise.
(CFLAGS-pwritev64v2.c): Likewise.
A further simplification could eliminate the canon variable in
gaih_inet and replace it with canonbuf. However, canonbuf is
used as a flag in the nscd code, which makes this somewhat
non-straightforward.
This is intended as a type-safe alternative to obstacks and
hand-written realloc constructs. The implementation avoids
writing function pointers to the heap.
In stdlib/gmp-impl.h, the macros MAX and MIN are defined exactly the same
as in sys/param.h. This patch removes the redefinition and makes
gmp-impl.h include sys/param.h instead.
Tested for powerpc64le and s390x.
* stdlib/gmp-impl.h: Include sys/param.h instead of redefining the
macros MAX and MIN.
Various of the signal.h conform/ failures for XPG4 and XPG42 are
actually the result of incorrect test expectations rather than header
bugs. This patch fixes the expectations to accord with those
standards (this does not however allow any XFAILs to be removed, as
some header bugs remain). Note for anyone comparing with the
standards: corrigendum U013/16 removes the mention of a sigmask
function in signal.h (C435 lists such a function in the definition of
signal.h, but without any actual specification for the function
itself), so sigmask is not included in the expectations.
Tested for x86_64.
* conform/data/signal.h-data (sa_sigaction): Do not expect for
[XPG4].
(SA_SIGINFO): Likewise.
(SA_ONSTACK): Likewise.
(SA_RESETHAND): Likewise.
(SA_RESTART): Likewise.
(SA_NOCLDWAIT): Likewise.
(SA_NODEFER): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
(MINSIGSTKSZ): Likewise.
(SIGSTKSZ): Likewise.
(ucontext_t): Likewise.
(stack_t): Likewise.
(struct sigstack): Likewise.
(SI_USER): Do not expect for [XPG4 || XPG42].
(SI_QUEUE): Likewise.
(SI_TIMER): Likewise.
(SI_ASYNCIO): Likewise.
(SI_MESGQ): Likewise.
(bsd_signal): Do not expect for [XPG4].
(killpg): Likewise.
(sigaltstack): Likewise.
(sighold): Likewise.
(sigignore): Likewise.
(siginterrupt): Likewise.
(sigpause): Likewise.
(sigrelse): Likewise.
(sigset): Likewise.
(sigwait): Do not expect for [XPG4 || XPG42].
On Linux-based configurations, bits/syscall.h is a generated file.
To avoid build-ordering problems, the Linux sys/syscall.h only includes
bits/syscall.h if _LIBC is not defined. After the _ISOMAC-testsuite
changes, this means any test case that includes sys/syscall.h tries to
pull in bits/syscall.h. This would be fine, because it'll definitely
have been generated by the time we start compiling tests, except that
the generated <builddir>/misc/bits/syscall.h is not visible in the
include path, because nothing needed it till now. So we either get
the bits/syscall.h from the host system, or the build fails.
The fix is simple: add a shim header for bits/syscall.h. I put it in
sysdeps/unix/sysv/linux/include instead of the top-level include/
because bits/syscall.h doesn't exist at all on other configurations as
far as I can tell.
This is known to affect nptl/tst-cond2[45]. Thanks to John David
Anglin for noticing the problem.
[BZ #21514]
* sysdeps/unix/sysv/linux/include/bits/syscall.h: New shim header
pointing to the generated file in <builddir>/misc/bits/syscall.h.
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.
libpthread used to have its own vfork implementation that differed
from libc's only in having a pointless micro-optimization. There is
no longer any use to having a separate copy in libpthread, but the
historical ABI requires a compatibility shim. microblaze was trying
to be slightly too clever about how it did this, and tickled a linker
bug. The linker bug should get fixed eventually, but there's no
reason for us to keep tickling it in the meantime.
This doesn't reuse the generic pt-vfork.c because microblaze doesn't
have IFUNC support yet, and it doesn't reuse aarch64/pt-vfork.c
because that fails to generate a tailcall (with GCC 7.1.1).
* sysdeps/unix/sysv/linux/microblaze/pt-vfork.S: Don't include
alpha/pt-vfork.S. Provide own compat shim for vfork and __vfork.
* sysdeps/unix/sysv/linux/microblaze/vfork.S: Add __libc_vfork alias.
* sysdeps/unix/sysv/linux/microblaze/localplt.data:
libpthread.so no longer references __errno_location.
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.
Allow the CPU features structure set up to be overridden by tunables
by delaying it to until after tunables are initialized. The
initialization is already delayed in dynamically linked glibc, it is
only in static binaries that the initialization is set early to allow
it to influence IFUNC relocations that happen in libc-start. It is a
bit too early however and there is a good place between tunables
initialization and IFUNC relocations where this can be done.
Verified that this does not regress the testsuite.
* csu/libc-start.c [!ARCH_INIT_CPU_FEATURES]: Define
ARCH_INIT_CPU_FEATURES.
(LIBC_START_MAIN): Call it.
* sysdeps/unix/sysv/linux/aarch64/libc-start.c
(__libc_start_main): Remove.
(ARCH_INIT_CPU_FEATURES): New macro.
* sysdeps/x86/libc-start.c (__libc_start_main): Remove.
(ARCH_INIT_CPU_FEATURES): New macro.
By x86-64 specification, 32-bit destination registers are zero-extended
to 64 bits. There is no need to use 64-bit registers when only the lower
32 bits are non-zero.
* sysdeps/x86_64/memchr.S (MEMCHR): Use 32-bit registers for
the lower 32 bits.
The following tests depend on ENABLE_LOCK_ELISION, which is only
available on tests-internal.
- nptl/tst-mutex8
- nptl/tst-mutex8-static
- nptl/tst-mutexpi8
- nptl/tst-mutexpi8-static
* nptl/Makefile (tests): Move nptl/tst-mutex8, nptl/tst-mutex8-static,
nptl/tst-mutexpi8 and nptl/tst-mutexpi8-static to...
(tests-internal): ... here.
Since __tunables_init is internal to ld.so, we should mark it hidden
to avoid PLT. We should also avoid PLT when calling __tunable_set_val
within ld.so.
2017-05-25 Siddhesh Poyarekar <siddhesh@sourceware.org>
H.J. Lu <hongjiu.lu@intel.com>
* elf/dl-tunables.c (__tunable_set_val): Make a hidden alias.
* elf/dl-tunables.h (__tunables_init): Mark it hidden in rtld.
(__tunable_set_val): Likewise.
We can put processor specific tunables in dl-tunables.list under
sysdeps instead of in elf/dl-tunables.list.
* Makeconfig ($(common-objpfx)dl-tunable-list.h): Also check
dl-tunables.list in subdirectories.
This change defines float128_private.h which contains
macros used to override long double naming conventions
when building a ldbl file.
* math/math.h [__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)]
(SNANF128): New macro.
* math/e_sqrtf128.c: New file.
* math/s_fmaxmag_template.c: Include math_private.h in order to
make inline expansion of fabs128().
* math/s_fminmag_template.c: Likewise.
* sysdeps/ieee754/float128/e_acosf128.c: New file.
* sysdeps/ieee754/float128/e_acoshf128.c: New file.
* sysdeps/ieee754/float128/e_asinf128.c: New file.
* sysdeps/ieee754/float128/e_atan2f128.c: New file.
* sysdeps/ieee754/float128/e_atanhf128.c: New file.
* sysdeps/ieee754/float128/e_coshf128.c: New file.
* sysdeps/ieee754/float128/e_exp10f128.c: New file.
* sysdeps/ieee754/float128/e_expf128.c: New file.
* sysdeps/ieee754/float128/e_fmodf128.c: New file.
* sysdeps/ieee754/float128/e_gammaf128_r.c: New file.
* sysdeps/ieee754/float128/e_hypotf128.c: New file.
* sysdeps/ieee754/float128/e_ilogbf128.c: New file.
* sysdeps/ieee754/float128/e_j0f128.c: New file.
* sysdeps/ieee754/float128/e_j1f128.c: New file.
* sysdeps/ieee754/float128/e_jnf128.c: New file.
* sysdeps/ieee754/float128/e_lgammaf128_r.c: New file.
* sysdeps/ieee754/float128/e_log10f128.c: New file.
* sysdeps/ieee754/float128/e_log2f128.c: New file.
* sysdeps/ieee754/float128/e_logf128.c: New file.
* sysdeps/ieee754/float128/e_powf128.c: New file.
* sysdeps/ieee754/float128/e_rem_pio2f128.c: New file.
* sysdeps/ieee754/float128/e_remainderf128.c: New file.
* sysdeps/ieee754/float128/e_scalbf128.c: New file.
* sysdeps/ieee754/float128/e_sinhf128.c: New file.
* sysdeps/ieee754/float128/float128_private.h: New file.
* sysdeps/ieee754/float128/gamma_productf128.c: New file.
* sysdeps/ieee754/float128/ieee754_float128.h: New file.
* sysdeps/ieee754/float128/k_cosf128.c: New file.
* sysdeps/ieee754/float128/k_sincosf128.c: New file.
* sysdeps/ieee754/float128/k_sinf128.c: New file.
* sysdeps/ieee754/float128/k_tanf128.c: New file.
* sysdeps/ieee754/float128/lgamma_negf128.c: New file.
* sysdeps/ieee754/float128/lgamma_productf128.c: New file.
* sysdeps/ieee754/float128/s_asinhf128.c: New file.
* sysdeps/ieee754/float128/s_atanf128.c: New file.
* sysdeps/ieee754/float128/s_cbrtf128.c: New file.
* sysdeps/ieee754/float128/s_ceilf128.c: New file.
* sysdeps/ieee754/float128/s_copysignf128.c: New file.
* sysdeps/ieee754/float128/s_cosf128.c: New file.
* sysdeps/ieee754/float128/s_erff128.c: New file.
* sysdeps/ieee754/float128/s_expm1f128.c: New file.
* sysdeps/ieee754/float128/s_fabsf128.c: New file.
* sysdeps/ieee754/float128/s_finitef128.c: New file.
* sysdeps/ieee754/float128/s_floorf128.c: New file.
* sysdeps/ieee754/float128/s_fmaf128.c: New file.
* sysdeps/ieee754/float128/s_fpclassifyf128.c: New file.
* sysdeps/ieee754/float128/s_frexpf128.c: New file.
* sysdeps/ieee754/float128/s_fromfpf128.c: New file.
* sysdeps/ieee754/float128/s_fromfpxf128.c: New file.
* sysdeps/ieee754/float128/s_getpayloadf128.c: New file.
* sysdeps/ieee754/float128/s_isinff128.c: New file.
* sysdeps/ieee754/float128/s_isnanf128.c: New file.
* sysdeps/ieee754/float128/s_issignalingf128.c: New file.
* sysdeps/ieee754/float128/s_llrintf128.c: New file.
* sysdeps/ieee754/float128/s_llroundf128.c: New file.
* sysdeps/ieee754/float128/s_log1pf128.c: New file.
* sysdeps/ieee754/float128/s_logbf128.c: New file.
* sysdeps/ieee754/float128/s_lrintf128.c: New file.
* sysdeps/ieee754/float128/s_lroundf128.c: New file.
* sysdeps/ieee754/float128/s_modff128.c: New file.
* sysdeps/ieee754/float128/s_nearbyintf128.c: New file.
* sysdeps/ieee754/float128/s_nextafterf128.c: New file.
* sysdeps/ieee754/float128/s_nexttowardf128.c: New file.
* sysdeps/ieee754/float128/s_nextupf128.c: New file.
* sysdeps/ieee754/float128/s_remquof128.c: New file.
* sysdeps/ieee754/float128/s_rintf128.c: New file.
* sysdeps/ieee754/float128/s_roundevenf128.c: New file.
* sysdeps/ieee754/float128/s_roundf128.c: New file.
* sysdeps/ieee754/float128/s_scalblnf128.c: New file.
* sysdeps/ieee754/float128/s_scalbnf128.c: New file.
* sysdeps/ieee754/float128/s_setpayloadf128.c: New file.
* sysdeps/ieee754/float128/s_setpayloadsigf128.c: New file.
* sysdeps/ieee754/float128/s_signbitf128.c: New file.
* sysdeps/ieee754/float128/s_significandf128.c: New file.
* sysdeps/ieee754/float128/s_sincosf128.c: New file.
* sysdeps/ieee754/float128/s_sinf128.c: New file.
* sysdeps/ieee754/float128/s_tanf128.c: New file.
* sysdeps/ieee754/float128/s_tanhf128.c: New file.
* sysdeps/ieee754/float128/s_totalorderf128.c: New file.
* sysdeps/ieee754/float128/s_totalordermagf128.c: New file.
* sysdeps/ieee754/float128/s_truncf128.c: New file.
* sysdeps/ieee754/float128/s_ufromfpf128.c: New file.
* sysdeps/ieee754/float128/s_ufromfpxf128.c: New file.
* sysdeps/ieee754/float128/t_sincosf128.c: New file.
* sysdeps/ieee754/float128/x2y2m1f128.c: New file.
* sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h:
(__iscanonicalf128): Define as a macro.
I just noticed that the array count for the hwcap flags list in ARM is
off by 10, i.e. 37 instead of 27. Following patch fixes this.
* sysdeps/unix/sysv/linux/arm/dl-procinfo.c
(_dl_arm_cap_flags): Fix array subscript.
* sysdeps/unix/sysv/linux/arm/dl-procinfo.h (_DL_HWCAP_COUNT):
Fix count.
Remove is_intel, is_amd and max_cpuid macros. Use __get_cpu_features
to get cpu_features instead.
* sysdeps/x86/cacheinfo.c (is_intel): Removed.
(is_amd): Likewise.
(max_cpuid): Likewise.
(__cache_sysconf): Use __get_cpu_features to get cpu_features.
(init_cacheinfo): Likewise.
The sigstack function was removed in the 2001 edition of POSIX, and
the sigstack structure in the 2008 edition. signal.h wrongly includes
those declarations even for newer POSIX versions. This patch fixes
the conditions, and conform/ expectations, accordingly.
This patch makes the minimum change to when these declarations are
present, leaving them visible for __USE_MISC as they would previously
have been visible by default. Arguably these legacy declarations
should only be visible when an old standard is specifically requested,
but implementing that would require arranging for the various sigstack
implementations to be able to see the struct sigstack type despite it
not being in _GNU_SOURCE in that case.
Tested for x86_64.
[BZ #21511]
* signal/signal.h: Include <bits/types/struct_sigstack.h> only if
[(__USE_XOPEN_EXTENDED && !__USE_XOPEN2K8) || __USE_MISC].
(sigstack): Declare only if [(__USE_XOPEN_EXTENDED &&
!__USE_XOPEN2K) || __USE_MISC].
* conform/data/signal.h-data (struct sigstack): Expect type only
if [!XOPEN2K8 && !POSIX2008].
(sigstack): Expect function only if [XPG42 || UNIX98].
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.
siginfo-arch.h is included in two different places, so the default
definitions of the macros that it might or might not define need to
be done conditionally afterward, not unconditionally beforehand.
* sysdeps/unix/sysv/linux/bits/siginfo-consts.h
(__SI_ASYNCIO_AFTER_SIGIO): Define default after including
bits/siginfo-arch.h, only if not already defined.
* sysdeps/unix/sysv/linux/bits/types/siginfo_t.h
(__SI_ALIGNMENT, __SI_BAND_TYPE, __SI_CLOCK_T)
(__SI_ERRNO_THEN_CODE, __SI_HAVE_SIGSYS, __SI_SEGFAULT_ADDL):
Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/siginfo-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/x86/bits/siginfo-arch.h:
Unconditionally define __SI_* macros.
As described in BZ#21398 (close as dup of 21393) report current
freopen implementation fails when one tries to freopen STDIN_FILENO,
STDOUT_FILENO, or STDERR_FILENO. Although on bug report the
discussion leads to argue if a close followed by a freopen on the
standard file is a valid operation, the underlying issue is not
really the check for dup3 returned value, but rather calling it
if the returned file descriptor is equal as the input one.
So for a quality of implementation this patch avoid calling dup3
for the aforementioned case. It also adds a dup3 error case check
for the two possible failures, with one being Linux only: EINTR and
EBUSY. The EBUSY issue is better explained on this stackoverflow
thread [1], but in a short it is due the internal Linux
implementation which allows a race condition window for dup2 due
the logic dissociation of file descriptor allocation and actual
VFS 'install' operation. For both outliers failures all allocated
memory is freed and a NULL FILE* is returned.
With this patch the example on BZ#21398 is now actually possible
(I used as the testcase for the bug report). Checked on
x86_64-linux-gnu.
[BZ #21393]
* libio/freopen.c (freopen): Avoid dup already opened file descriptor
and add a check for dup3 failure.
* libio/freopen64.c (freopen64): Likewise.
* libio/tst-freopen.c (do_test): Rename to do_test_basic and use
libsupport.
(do_test_bz21398): New test.
* manual/stdio.texi (freopen): Add documentation of EBUSY failure.
[1] http://stackoverflow.com/questions/23440216/race-condition-when-using-dup2
David Miller has not been shot yet AFAIK (yes, I googled for any news
that may seem relevant and I poked him on twitter some days ago) so
either nobody uses SPARC or the code is correct or nobody read the
instructions in the comment to shoot him. In all of those cases the
comment is clearly not useful, so getting rid of it.
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.
These __need macros are only used internally, by nptl/descr.h.
However, including all of resolv.h from descr.h causes build failures
due to resolv.h's dozens of pseudo-struct-field macros, some of which
collide with struct fields in NPTL internal data structures.
Similarly, including all of list.h from descr.h produces an include
cycle, atomic.h -> atomic-machine.h -> tls.h -> descr.h -> list.h ->
atomic.h, and then list.h tries to use atomic.h macros that haven't
been defined yet. So we do need mini-headers for these. In the
list.h case I called it include/list_t.h since it isn't going to be
installed.
* resolv/resolv.h: Remove __need_res_state logic.
Move definition of res_state and related constants to ...
* resolv/bits/types/res_state.h: ...this new file.
* resolv/Makefile: Install bits/types/res_state.h.
* include/bits/types/res_state.h: New wrapper.
* include/list.h: Remove __need_list_t logic.
Move definition of list_t to ...
* include/list_t.h: ...this new file.
* nptl/descr.h: Include list_t.h and bits/types/res_state.h
instead of list.h and resolv.h.
This semi-mechanical patch removes all uses and definitions of the
sfi_breg, sfi_pld, and sfi_sp macros from various ARM-specific
assembly files. These were only used by NaCl.
* sysdeps/arm/sysdep.h
(ARM_SFI_MACROS, sfi_breg, sfi_pld, sfi_sp): Delete definitions.
* sysdeps/arm/__longjmp.S, sysdeps/arm/add_n.S
* sysdeps/arm/addmul_1.S, sysdeps/arm/arm-mcount.S
* sysdeps/arm/armv6/rawmemchr.S, sysdeps/arm/armv6/strchr.S
* sysdeps/arm/armv6/strcpy.S, sysdeps/arm/armv6/strlen.S
* sysdeps/arm/armv6/strrchr.S, sysdeps/arm/armv6t2/memchr.S
* sysdeps/arm/armv6t2/strlen.S
* sysdeps/arm/armv7/multiarch/memcpy_impl.S
* sysdeps/arm/armv7/strcmp.S, sysdeps/arm/dl-tlsdesc.S
* sysdeps/arm/memcpy.S, sysdeps/arm/memmove.S
* sysdeps/arm/memset.S, sysdeps/arm/setjmp.S
* sysdeps/arm/strlen.S, sysdeps/arm/submul_1.S:
Remove all uses of sfi_breg, sfi_pld, and sfi_sp.
The NaCl port has not been actively maintained since before the 2.25
release. The complementary GCC back-end was never contributed to GCC,
and we are given to understand that the current NaCl SDK has switched
to Clang and therefore cannot be used to build glibc anymore, so we
doubt that the port remains useful.
This commit simply removes the sysdeps/arm/nacl and sysdeps/nacl
directories and the abi-tags entry.
Remove the NaCl port.
* abi-tags: Remove .*-.*-nacl.* entry.
* sysdeps/arm/nacl: Remove directory and contents.
* sysdeps/nacl: Likewise.
errno.texi documents error macros, their values, and error strings in
Texinfo @comments, some of which are also used for @standards. The
purpose of this commit is to separate the standards from the error
strings so that both the @standards conversion script picks up clean
@standards and the errno documentation framework is improved.
The error names, values, and messages are consolidated in a new custom
macro, @errno. It is not clear that scripts within the sources rely
on the special Texinfo @comment-based format to generate files used
throughout the library, so the definition of @errno in macros.texi now
provides a comment indicating the dependency. The dependent scripts
are updated to use @errno, which also simplifies them a bit. The
files those scripts generate were verified to be unchanged.
The @errno macro is not visibly rendered in any way at this time, but
it does use an @cindex command to add the error string to the Concept
Index, to facilitate searching on error messages.
* manual/errno.texi: Convert @comment-based errno
documentation to @errno.
* manual/macros.texi (@errno): New macro. Consolidate errors,
their values, and messages, adding the error string to the
Concept Index. Provide a warning in the comment about
external (to the manual) dependencies.
* sysdeps/gnu/errlist.awk: Use @errno instead of @comments.
* sysdeps/mach/hurd/errnos.awk: Likewise.
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.
SSE2 memchr computes "edx + ecx - 16" where ecx is less than 16. Use
"edx - (16 - ecx)", instead of satured math, to avoid possible addition
overflow. This replaces
add %ecx, %edx
sbb %eax, %eax
or %eax, %edx
sub $16, %edx
with
neg %ecx
add $16, %ecx
sub %ecx, %edx
It is the same for x86_64, except for rcx/rdx, instead of ecx/edx.
* sysdeps/i386/i686/multiarch/memchr-sse2.S (MEMCHR): Use
"edx + ecx - 16" to avoid possible addition overflow.
* sysdeps/x86_64/memchr.S (memchr): Likewise.
Commits ecade1c, afbbc18, and a5a34d2 added compiler flags for
vmsplice, splice, and open_by_handle_at respectively on default
misc/Makefile. However such symbols are build only for Linux and
the rules should on linux Makefile only.
Checked on x86_64-linux-gnu.
* misc/Makefile (CFLAGS-vmsplice.c): Remove rule.
(CFLAGS-splice.c): Likewise.
(CFLAGS-open_by_handle_at.c): Likewise.
* sysdeps/unix/sysv/linux/Makefile (CFLAGS-vmsplice.c): New rule.
(CFLAGS-splice.c): Likewise.
(CFLAGS-open_by_handle_at.c): Likewise.
This patch makes the glibc build generate an additional header
ldbl-compat-choose.h that defines LONG_DOUBLE_COMPAT_CHOOSE_* macros
for each libc and libm symbol, which select one or the other of their
arguments based on whether the symbol was added before a change to
long double != double.
The effect of this is that it is then possible to define a macro
maybe_long_double_symbol that automatically acts as either
long_double_symbol or weak_alias depending on when the symbol being
defined was added. This can be used when building long double
functions from type-generic templates. Thus, with this patch ldbl-opt
no longer needs special long double implementations of each new libm
function added using such a template, and the existing such
implementations are removed.
This is a step towards being able more generally to use common macros
to create all the aliases needed for a libm function, so reducing the
amount of special-case code needed in ldbl-opt and ldbl-64-128, and
facilitating subsequently adding *f32 / *f64 / *f128 / *f32x / *f64x
aliases to existing functions (where the set of aliases that a
function should have may depend on the architecture in various ways).
Tested with build-many-glibcs.py. Except for on
powerpc64le-linux-gnu, installed stripped shared libraries are
unchanged by the patch. powerpc64le-linux-gnu is the unique
configuration which used ldbl-opt from the start rather than adding a
new long double choice after originally only having had long double =
double. The effect of the patch there is that various cases that
previously used long_double_symbol unconditionally now use weak_alias
instead, so .os files contain e.g. a symbol cabsl instead of
cabsl@@GLIBC_2.17. The final dynamic symbols and versions in the
resulting shared libraries are unchanged (ABI tests pass), as is the
disassembly of the shared libraries, but the differences in the .os
files still result in different .gnu_hash contents in libm.so; the
differences are of no significance and logically using weak_alias is
what's most appropriate in those cases.
* scripts/versions.awk: Generate ldbl-compat-choose.h.
* sysdeps/ieee754/ldbl-opt/math-type-macros-ldouble.h: Include
<ldbl-compat-choose.h>.
(maybe_long_double_symbol): New macro.
[!declare_mgen_alias] (declare_mgen_alias): Use
maybe_long_double_symbol.
* sysdeps/ieee754/ldbl-opt/s_canonicalizel.c: Remove.
* sysdeps/ieee754/ldbl-opt/s_fmaxmagl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/s_fminmagl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/s_nextdownl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise.
* Makerules [$(build-shared) = yes && !avoid-generated]
(before-compile): Add $(common-objpfx)ldbl-compat-choose.h.
[$(build-shared) = yes && !avoid-generated]
($(common-objpfx)ldbl-compat-choose.h): New target.
This patch arranges for the glibc build to generate a header
first-versions.h that defines macros for the earliest symbol version
in which each public symbol (GLIBC_[0-9]* symbol version, name only
uses C identifier characters) is available.
This is used in sysdeps/ieee754/ldbl-opt/math-type-macros-double.h to
replace the manually defined LDOUBLE_*_libm_version macros for various
functions defined using type-generic templates, the purpose of which
is to use in LONG_DOUBLE_COMPAT tests "was this function originally
added before glibc supported long double != double on this platform?".
As discussed in
<https://sourceware.org/ml/libc-alpha/2016-12/msg00246.html>, I expect
this to be useful more generally in reducing the amount of
special-case code needed in ldbl-opt and ldbl-64-128.
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.
* scripts/versions.awk: Generate first-versions.h.
* sysdeps/ieee754/ldbl-opt/math-type-macros-double.h: Include
<first-versions.h>.
(LDOUBLE_cabsl_libm_version): Remove macro.
(LDOUBLE_cargl_libm_version): Likewise.
(LDOUBLE_cimagl_libm_version): Likewise.
(LDOUBLE_conjl_libm_version): Likewise.
(LDOUBLE_creall_libm_version): Likewise.
(LDOUBLE_cacosl_libm_version): Likewise.
(LDOUBLE_cacoshl_libm_version): Likewise.
(LDOUBLE_ccosl_libm_version): Likewise.
(LDOUBLE_ccoshl_libm_version): Likewise.
(LDOUBLE_casinl_libm_version): Likewise.
(LDOUBLE_csinl_libm_version): Likewise.
(LDOUBLE_casinhl_libm_version): Likewise.
(LDOUBLE_csinhl_libm_version): Likewise.
(LDOUBLE_catanl_libm_version): Likewise.
(LDOUBLE_catanhl_libm_version): Likewise.
(LDOUBLE_ctanl_libm_version): Likewise.
(LDOUBLE_ctanhl_libm_version): Likewise.
(LDOUBLE_cexpl_libm_version): Likewise.
(LDOUBLE_clogl_libm_version): Likewise.
(LDOUBLE_cprojl_libm_version): Likewise.
(LDOUBLE_csqrtl_libm_version): Likewise.
(LDOUBLE_cpowl_libm_version): Likewise.
(LDOUBLE_clog10l_libm_version): Likewise.
(LDOUBLE___clog10l_libm_version): Likewise.
(LDOUBLE_fdiml_libm_version): Likewise.
(LDOUBLE_fmaxl_libm_version): Likewise.
(LDOUBLE_fminl_libm_version): Likewise.
(LDOUBLE_ilogbl_libm_version): Likewise.
(LDOUBLE_nanl_libm_version): Likewise.
[!M_LIBM_NEED_COMPAT] (M_LIBM_NEED_COMPAT): Use
FIRST_VERSION_libm_* macros.
[!declare_mgen_libm_compat] (declare_mgen_libm_compat): Likewise.
* Makerules [$(build-shared) = yes && !avoid-generated]
(before-compile): Add $(common-objpfx)first-versions.h.
[$(build-shared) = yes && !avoid-generated]
($(common-objpfx)first-versions.h): New target.
($(common-objpfx)sysd-versions): Depend on and change to rule for
building $(common-objpfx)versions.stmp.
This patch consolidates the mq_timedsend Linux syscall generation
on sysdeps/unix/sysv/linux/mq_timedsend.c. It basically removes it
from architecture auto-generation list.
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.
* rt/Makefile (CFLAGS-mq_timedsend.c): New flag.
* sysdeps/unix/sysv/linux/mq_timedsend.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list (mq_timedsend): Remove from
auto-generation list.
This patch consolidates the mq_timedreceive Linux syscall generation
on sysdeps/unix/sysv/linux/mq_timedreceive.c. It basically removes it
from architecture auto-generation list.
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.
* rt/Makefile (CFLAGS-mq_timedreceive.c): New flag.
* sysdeps/unix/sysv/linux/mq_timedreceive.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list (mq_timedreceive): Remove
from auto-generation list.
This patch consolidates the open_by_handle_at Linux syscall generation on
sysdeps/unix/sysv/linux/open_by_handle_at.c. It basically removes it from
architectures auto-generation list.
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/Makefile (sysdep_routines): Add
open_by_handle_at.
(CFLAGS-open_by_handle_at.c): New flag.
* sysdeps/unix/sysv/linux/open_by_handle_at.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list (open_by_handle_at): New
file.
* misc/Makefile (CFLAGS-open_by_handle_at.c): New rule.
This patch consolidates the splice Linux syscall generation on
sysdeps/unix/sysv/linux/splice.c. It basically removes it from
architectures auto-generation list.
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/Makefile (sysdep_routines): Add splice.
(CFLAGS-splice.c): New flag.
* sysdeps/unix/sysv/linux/splice.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list (splice): Remove from
auto-generation syscall list.
* misc/Makefile (CFLAGS-splice.c): New rule.
This patch consolidates the vmsplice Linux syscall generation on
sysdeps/unix/sysv/linux/vmsplice.c. It basically removes it from
architectures auto-generation list.
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/Makefile (CFLAGS-vmsplice.c): New flag.
* sysdeps/unix/sysv/linux/syscalls.list (vmsplice): Remove from
auto-generation syscall list.
* sysdeps/unix/sysv/linux/vmsplice.c: New file.
* misc/Makefile (CFLAGS-vmsplice.c): New rule.
This patch consolidates the fsync Linux syscall generation on
sysdeps/unix/sysv/linux/fsync.c. It basically removes it from
architectures auto-generation list.
For arm it also removes the __errno_location call since fsync
is not called with SYSCALL_CANCEL with call arch-specific
INLINE_SYSCALL macro which in turn will call __set_errno macro
(and setting errno directly).
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.
* misc/Makefile (CFLAGS-fsync.c): New flag.
* nptl/Makefile (CFLAGS-fsync.c): Likewise.
* sysdeps/unix/syscalls.list (fsync): Remove from auto-generation
syscall list.
* sysdeps/unix/sysv/linux/fsync.c: New file.
* sysdeps/unix/sysv/linux/arm/localplt.data [libpthread.so]
(__errno_location): Remove.
This patch consolidates the fdatasync Linux syscall generation on
sysdeps/unix/sysv/linux/fdatasync.c. It basically removes it from
architectures auto-generation list.
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.
* misc/makefile (CFLAGS-datasync.c): New flag.
* nptl/makefile (CFLAGS-datasync.c): Likewise.
* sysdeps/unix/sysv/linux/syscalls.list (fdatasync): Remove from
auto-generation syscall list.
* sysdeps/unix/sysv/linux/fdatasync.c: New file.
This patch consolidates the msync Linux syscall generation on
sysdeps/unix/sysv/linux/msync.c. It basically removes it from
architectures auto-generation list.
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.
* misc/Makefile (CFLAGS-msync.c): New rule.
* nptl/Makefile (CFLAGS-msync.c): Likewise.
* sysdeps/unix/syscalls.list: Remove msync from auto-generation list.
* sysdeps/unix/sysv/linux/msync.c: New file.
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 tee Linux syscall generation on
sysdeps/unix/sysv/linux/tee.c. It basically removes it from
architectures auto-generation list.
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/Makefile (sysdeps_routines): Add tee.
(CFLAGS-tee.c): New rule.
* sysdeps/unix/sysv/linux/syscalls.list: Remove tee from
auto-generated list.
* sysdeps/unix/sysv/linux/tee.c: New file.
This patch consolidates the nanosleep Linux syscall generation on
sysdeps/unix/sysv/linux/nanosleep.c. It basically removes it from
architectures auto-generation list.
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.
* nptl/Makefile (CFLAGS-nanosleep.c): New rule.
* posix/Makefile (CFLAGS-nanosleep.c): Likewise.
* sysdeps/unix/sysv/linux/nanosleep.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Remove nanosleep from
auto-generated list.
This patch consolidates the waitpid Linux syscall generation on
sysdeps/unix/sysv/linux/waitpid.c. It basically removes it from
architecture auto-generation list and also remove arch specific
implementations.
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/sh/syscalls.list: Remove waitpid from
auto-generated list.
* sysdeps/unix/sysv/linux/m68k/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/syscalls.list: Remove file.
* sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Likewise.
This patch consolidates the pause Linux implementation on
sysdeps/unix/sysv/linux/pause.c. If defined the pause syscall
(__NR_pause) will be used, other ppoll with 0 arguments will be
used instead.
It has the small advantage of generic pause implementation with
uses rt_sigprocmask plus rt_sigsuspend because it requires only
one syscall and the pause is done atomically regarding signal
handling (for instance, pause may not be interrupted if the
signal arrives between the rt_sigprocmask and rt_sigsuspend
syscall).
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/generic/pause.c: Remove file.
* sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h [__arch64__]
(__NR_pause): Undefine.
* sysdeps/unix/sysv/linux/pause.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Remove pause from
auto-generation list.
It was discovered that the dynamic linker allocates a massive amount
of memory that increases with the value of LD_HWCAP_MASK. Due to
this, setting its value to 0xffffffff in the environment of
tst-env-setuid would cause it to fail in some environments where
overcommit was disabled or severely constrained because malloc would
fail.
Since this test is only concerned with the value of LD_HWCAP_MASK
envvar being conserved (or not, for setxid binaries), lower its value
to avoid spurious failures.
The allocation bug is reported as #21502.
The conversion script will convert these annotations, but the
replacement Summary-generation script won't catch them because @items
in @tables are not generally considered annotatable, causing them to
be skipped over (or cause errors). Using @vtable ensures their
continued presence in the Summary, with the added benefit that Texinfo
will also automatically include them in the Variable and Constant
Macro index now.
* manual/conf.texi: Convert @tables of annotated @items to
@vtables.
* manual/lang.texi: Likewise.
* manual/pattern.texi: Likewise.
* manual/resource.texi: Likewise.
* manual/socket.texi: Likewise.
This commit handles exceptional cases of invalid syntax for the
@standards conversion script.
* manual/crypt.texi: Move a comment out of an @*x list.
* manual/filesys.texi: Refactor some comments, one of which
looks like a standard. Fix incorrectly separated standards.
* manual/locale.texi: Invert an annotation.
* manual/resource.texi: Fix incorrectly separated standards.
* manual/time.texi: Refactor a @vtable that obscures an
annotation.
* manual/users.texi: Refactor multiple headers to occupy a
single @comment.
This implementation is based on the one already used at
sysdeps/powerpc/powerpc64/fpu/multiarch/s_sinf-power8.S.
* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
[$(subdir) = math] (libm-sysdep_routines): Add s_cosf-power8 and
s_cosf-ppc64.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-power8.S: New file.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-ppc64.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf.c: Likewise.
* sysdeps/powerpc/powerpc64/power8/fpu/s_cosf.S: Likewise.
This patch converts the implementation of exp2l in math/e_exp2l.c into
a template in math/e_exp2_template.c, then adjusts Makefile to use
this template for long double (the implementations for float and
double in sysdeps have higher precedence and are not used). This
template can also be used for float128, thus reducing the amount of
duplicated code that gets added when adding support the new type.
Tested for powerpc64le and s390x.
* math/Makefile (libm-calls): Move e_exp2F to gen-libm-calls.
(gen-libm-calls): Add e_exp2F to use the template.
* math/e_exp2l.c: Rename to math/e_exp2_template.c.
* math/e_exp2_template.c: New file, renamed from
math/e_exp2l.c, and made into a template.
* sysdeps/generic/math-type-macros.h (M_MIN_EXP): New macro.
Recognize the uint64_t type in addition to the current int32_t and
size_t. This allows addition of tunables of uint64_t types. In
addition to adding the uint64_t type, this patch also consolidates
validation and reading of integer types in tunables.
One notable change is that of overflow computation in
tunables_strtoul. The function was lifted from __internal_strtoul,
but it does not need the boundary condition check (i.e. result ==
ULONG_MAX) since it does not need to set errno. As a result the check
can be simplified, which I have now done.
* elf/dl-tunable-types.h (tunable_type_code_t): New type
TUNABLE_TYPE_UINT_64.
* elf/dl-tunables.c (tunables_strtoul): Return uint64_t.
Simplify computation of overflow.
(tunable_set_val_if_valid_range_signed,
tunable_set_val_if_valid_range_unsigned): Remove and replace
with this...
(TUNABLE_SET_VAL_IF_VALID_RANGE): ... New macro.
(tunable_initialize): Adjust. Add uint64_t support.
(__tunable_set_val): Add uint64_t support.
* README.tunables: Document it.
Enhance dl-tunables.list to allow specifying a default value for a
tunable that it would be initialized to.
* scripts/gen-tunables.awk: Recognize 'default' keyword in
dl-tunables.list.
* README.tunables: Document it.
Currently all architectures but microblaze use wire-up syscall for
p{readv,write}v. Microblaze still uses the syscall emulation using
sysdep/posix/p{readv,writev}.c and it was reported in some ocasions
[1] [2] that it might have some issues with some linux specific
usage (mainly with O_DIRECT and the alignment requirement).
Although it is not an issue for virtually all the system, this
patch refactors the sysdeps/posix p{read,write}v syscall to avoid
such issue (by using posix_memalign on the buffer used on
p{read,write} call) and by refactoring it common files to avoid
the need check on defines to correct set the alias and internal
symbols.
Checked on microblaze-linux-gnu check with run-built-tests=no and
by using the sysdeps/posix implementation on x86_64-linux-gnu (just
for sanity test where it shown no regression).
* sysdeps/posix/preadv.c: Use sysdeps/posix/preadv_common.c.
* sysdeps/posix/preadv64.c: Likewise.
* sysdeps/unix/sysv/linux/preadv.c: Likewise.
* sysdeps/unix/sysv/linux/preadv64.c: Likewise.
* sysdeps/posix/pwritev.c: Use sysdeps/posix/pwritev_common.c.
* sysdeps/posix/pwritev64.c: Likewise.
* sysdeps/unix/sysv/linux/pwritev.c: Likewise.
* sysdeps/unix/sysv/linux/pwritev64.c: Likewise.
* sysdeps/posix/preadv_common.c: New file.
* sysdeps/posix/pwritev_common.c: Likewise.
[1] http://www.mail-archive.com/qemu-devel@nongnu.org/msg25282.html
[2] https://bugzilla.redhat.com/show_bug.cgi?id=563103#c8
The templates for the IEEE functions wrappers implement wrappers that
do not rely on _LIB_VERSION / matherr / __kernel_standard
functionality to set errno and fix the return value of the functions.
The wrappers are ready to be used by all floating-point types, however
they will first be used by float128, since the old wrappers for float,
double, and long double need to be first deprecated and versioned.
This commits defines __USE_WRAPPER_TEMPLATE to 1 for float128 files,
so that the new wrapper templates are used for this type.
* sysdeps/generic/math-type-macros-float128.h
(__USE_WRAPPER_TEMPLATE): Define to 1 to enable use of the
wrapper templates.
Add the necessary bits to the private headers to support
building the _Float128 libm functions.
A local override for float.h is provided to include the
missing *FLT128 macros implied by TS 18661-3 for this
type when compiling prior to GCC 7.
* include/complex.h (__kernel_casinhf128): New declaration.
* include/float.h: New file.
* include/math.h (__finitef128): Add a hidden def.
(__isinff128): Likewise.
(__isnanf128): Likewise.
(__fpclassify): Likewise.
(__issignalling): Likewise.
(__expf128): Likewise.
(__expm1f128): Likewise.
* sysdeps/generic/fix-fp-int-convert-overflow.h:
(FIX_FLT128_LONG_CONVERT_OVERFLOW): New macro.
(FIX_FLT128_LLONG_CONVERT_OVERFLOW): Likewise.
* sysdeps/generic/math-type-macros-float128.h: New file.
* sysdeps/generic/math_private.h: Include bits/floatn.h and
math_private_calls.h for _Float128.
(__isinff128): New inline implementation used when GCC < 7.0,
since in this case __builtin_isinf_sign is broken.
(fabsf128): New inline implementation that calls the builtin.
(__EXPR_FLT128): New macro.
(min_of_type): Optionally include _Float128 types too.
* sysdeps/generic/math_private_calls.h (__kernel_sincos):
Declare for _Float128.
(__kernel_rem_pio2): Likewise.
* sysdeps/ieee754/ldbl-opt/s_sin.c:
(__DECL_SIMD_sincos_disablef128): New macro.
All the declarations in math-finite.h are macroized by floating-point
type. This patch includes it for float128 and protects the
declarations of functions that need not be declared for float128.
* math/math.h: Include bits/math-finite.h for float128.
(__MATH_DECLARING_FLOATN): Define to control declaration of
float128 functions.
* math/bits/math-finite.h (pow10): Do not declare for float128.
(gamma): Likewise.
(scalb): Likewise.
This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.
* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.
* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.
* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.
* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.
* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.
* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.
* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0. Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.
The SPARC implementations of __signbit* functions have aliases
signbit, signbitf, signbitl. These are useless, as they aren't
exported from the shared libraries (only the __signbit* functions are
exported, to be used by the type-generic signbit macro with older
compilers). This patch removes the useless aliases.
Tested (compilation only) with build-many-glibcs.py for
sparc64-linux-gnu and sparcv9-linux-gnu.
* sysdeps/sparc/sparc32/fpu/s_signbit.S (signbit): Remove alias.
(signbitf): Likewise.
* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S (signbit):
Likewise.
(signbitl): Likewise.
* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S (signbitf):
Likewise.
* sysdeps/sparc/sparc64/fpu/s_signbit.S (signbit): Likewise.
(signbitl): Likewise.
* sysdeps/sparc/sparc64/fpu/s_signbitf.S (signbitf): Likewise.
Now that 3.2 is the minimum Linux kernel version for glibc, this patch
removes __ASSUME_STATFS_F_FLAGS and associated conditional code.
Tested for x86_64.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_STATFS_F_FLAGS): Remove macro.
* sysdeps/unix/sysv/linux/internal_statvfs.c
[!__ASSUME_STATFS_F_FLAGS]: Remove conditional code.
This patch adds a new build module called 'testsuite'.
IS_IN (testsuite) implies _ISOMAC, as do IS_IN_build and __cplusplus
(which means several ad-hoc tests for __cplusplus can go away).
libc-symbols.h now suppresses almost all of *itself* when _ISOMAC is
defined; in particular, _ISOMAC mode does not get config.h
automatically anymore.
There are still quite a few tests that need to see internal gunk of
one variety or another. For them, we now have 'tests-internal' and
'test-internal-extras'; files in this category will still be compiled
with MODULE_NAME=nonlib, and everything proceeds as it always has.
The bulk of this patch is moving tests from 'tests' to
'tests-internal'. There is also 'tests-static-internal', which has
the same effect on files in 'tests-static', and 'modules-names-tests',
which has the *inverse* effect on files in 'modules-names' (it's
inverted because most of the things in modules-names are *not* tests).
For both of these, the file must appear in *both* the new variable and
the old one.
There is also now a special case for when libc-symbols.h is included
without MODULE_NAME being defined at all. (This happens during the
creation of libc-modules.h, and also when preprocessing Versions
files.) When this happens, IS_IN is set to be always false and
_ISOMAC is *not* defined, which was the status quo, but now it's
explicit.
The remaining changes to C source files in this patch seemed likely to
cause problems in the absence of the main change. They should be
relatively self-explanatory. In a few cases I duplicated a definition
from an internal header rather than move the test to tests-internal;
this was a judgement call each time and I'm happy to change those
however reviewers feel is more appropriate.
* Makerules: New subdir configuration variables 'tests-internal'
and 'test-internal-extras'. Test files in these categories will
still be compiled with MODULE_NAME=nonlib. Test files in the
existing categories (tests, xtests, test-srcs, test-extras) are
now compiled with MODULE_NAME=testsuite.
New subdir configuration variable 'modules-names-tests'. Files
which are in both 'modules-names' and 'modules-names-tests' will
be compiled with MODULE_NAME=testsuite instead of
MODULE_NAME=extramodules.
(gen-as-const-headers): Move to tests-internal.
(do-tests-clean, common-mostlyclean): Support tests-internal.
* Makeconfig (built-modules): Add testsuite.
* Makefile: Change libof-check-installed-headers-c and
libof-check-installed-headers-cxx to 'testsuite'.
* Rules: Likewise. Support tests-internal.
* benchtests/strcoll-inputs/filelist#en_US.UTF-8:
Remove extra-modules.mk.
* config.h.in: Don't check for __OPTIMIZE__ or __FAST_MATH__ here.
* include/libc-symbols.h: Move definitions of _GNU_SOURCE,
PASTE_NAME, PASTE_NAME1, IN_MODULE, IS_IN, and IS_IN_LIB to the
very top of the file and rationalize their order.
If MODULE_NAME is not defined at all, define IS_IN to always be
false, and don't define _ISOMAC.
If any of IS_IN (testsuite), IS_IN_build, or __cplusplus are
true, define _ISOMAC and suppress everything else in this file,
starting with the inclusion of config.h.
Do check for inappropriate definitions of __OPTIMIZE__ and
__FAST_MATH__ here, but only if _ISOMAC is not defined.
Correct some out-of-date commentary.
* include/math.h: If _ISOMAC is defined, undefine NO_LONG_DOUBLE
and _Mlong_double_ before including math.h.
* include/string.h: If _ISOMAC is defined, don't expose
_STRING_ARCH_unaligned. Move a comment to a more appropriate
location.
* include/errno.h, include/stdio.h, include/stdlib.h, include/string.h
* include/time.h, include/unistd.h, include/wchar.h: No need to
check __cplusplus nor use __BEGIN_DECLS/__END_DECLS.
* misc/sys/cdefs.h (__NTHNL): New macro.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h
(__m81_defun): Use __NTHNL to avoid errors with GCC 6.
* elf/tst-env-setuid-tunables.c: Include config.h with _LIBC
defined, for HAVE_TUNABLES.
* inet/tst-checks-posix.c: No need to define _ISOMAC.
* intl/tst-gettext2.c: Provide own definition of N_.
* math/test-signgam-finite-c99.c: No need to define _ISOMAC.
* math/test-signgam-main.c: No need to define _ISOMAC.
* stdlib/tst-strtod.c: Convert to test-driver. Split locale_test to...
* stdlib/tst-strtod1i.c: ...this new file.
* stdlib/tst-strtod5.c: Convert to test-driver and add copyright notice.
Split tests of __strtod_internal to...
* stdlib/tst-strtod5i.c: ...this new file.
* string/test-string.h: Include stdint.h. Duplicate definition of
inhibit_loop_to_libcall here (from libc-symbols.h).
* string/test-strstr.c: Provide dummy definition of
libc_hidden_builtin_def when including strstr.c.
* sysdeps/ia64/fpu/libm-symbols.h: Suppress entire file in _ISOMAC
mode; no need to test __STRICT_ANSI__ nor __cplusplus as well.
* sysdeps/x86_64/fpu/math-tests-arch.h: Include cpu-features.h.
Don't include init-arch.h.
* sysdeps/x86_64/multiarch/test-multiarch.h: Include cpu-features.h.
Don't include init-arch.h.
* elf/Makefile: Move tst-ptrguard1-static, tst-stackguard1-static,
tst-tls1-static, tst-tls2-static, tst-tls3-static, loadtest,
unload, unload2, circleload1, neededtest, neededtest2,
neededtest3, neededtest4, tst-tls1, tst-tls2, tst-tls3,
tst-tls6, tst-tls7, tst-tls8, tst-dlmopen2, tst-ptrguard1,
tst-stackguard1, tst-_dl_addr_inside_object, and all of the
ifunc tests to tests-internal.
Don't add $(modules-names) to test-extras.
* inet/Makefile: Move tst-inet6_scopeid_pton to tests-internal.
Add tst-deadline to tests-static-internal.
* malloc/Makefile: Move tst-mallocstate and tst-scratch_buffer to
tests-internal.
* misc/Makefile: Move tst-atomic and tst-atomic-long to tests-internal.
* nptl/Makefile: Move tst-typesizes, tst-rwlock19, tst-sem11,
tst-sem12, tst-sem13, tst-barrier5, tst-signal7, tst-tls3,
tst-tls3-malloc, tst-tls5, tst-stackguard1, tst-sem11-static,
tst-sem12-static, and tst-stackguard1-static to tests-internal.
Link tests-internal with libpthread also.
Don't add $(modules-names) to test-extras.
* nss/Makefile: Move tst-field to tests-internal.
* posix/Makefile: Move bug-regex5, bug-regex20, bug-regex33,
tst-rfc3484, tst-rfc3484-2, and tst-rfc3484-3 to tests-internal.
* stdlib/Makefile: Move tst-strtod1i, tst-strtod3, tst-strtod4,
tst-strtod5i, tst-tls-atexit, and tst-tls-atexit-nodelete to
tests-internal.
* sunrpc/Makefile: Move tst-svc_register to tests-internal.
* sysdeps/powerpc/Makefile: Move test-get_hwcap and
test-get_hwcap-static to tests-internal.
* sysdeps/unix/sysv/linux/Makefile: Move tst-setgetname to
tests-internal.
* sysdeps/x86_64/fpu/Makefile: Add all libmvec test modules to
modules-names-tests.
_IO_MTSAFE_IO controls whether stdio is *built* with support for
multithreading. In the distant past it might also have worked as a
feature selection macro, allowing library *users* to select
thread-safe or lock-free stdio at application build time, I haven't
done the archaeology. Nowadays, defining _IO_MTSAFE_IO while using
the installed headers, or in _ISOMAC mode, will cause libio.h to throw
syntax errors.
This patch removes _IO_MTSAFE_IO from the public headers
(specifically, from libio/libio.h). The most important thing it
controlled in there was whether libio.h defines _IO_lock_t itself or
expects stdio-lock.h to have done it, and we do still need a
inter-header communication macro for that, because stdio-lock.h can
only define _IO_lock_t as a typedef. I've invented
_IO_lock_t_defined, which is defined by both versions of stdio-lock.h.
_IO_MTSAFE_IO also controlled the definitions of a handful of macros
that _might_ count as part of the public libio.h interface. They are
now unconditionally given their non-_IO_MTSAFE_IO definition in
libio/libio.h, and include/libio.h redefines them with the
_IO_MTSAFE_IO definition. This should minimize the odds of breaking
old software that actually uses those macros.
I suspect that this entire mechanism is vestigial, and that glibc
won't build anymore if you *don't* define _IO_MTSAFE_IO, but that's
another patchset. The bulk of libio.h is internal-use-only stuff that
no longer makes sense to expose (libstdc++ gave up on making a FILE
the same object as a C++ filebuf *decades* ago) but that, too, is
another patchset.
* libio/libio.h: Condition dummy definition of _IO_lock_t on
_IO_lock_t_defined, not _IO_MTSAFE_IO. Unconditionally use the
non-_IO_MTSAFE_IO definitions for _IO_peekc, _IO_flockfile,
_IO_funlockfile, and _IO_ftrylockfile. Only define
_IO_cleanup_region_start and _IO_cleanup_region_end if not
already defined.
* include/libio.h: If _IO_MTSAFE_IO is defined, redefine
_IO_peekc, _IO_flockfile, _IO_funlockfile, and _IO_ftrylockfile
appropriately.
* sysdeps/generic/stdio-lock.h, sysdeps/nptl/stdio-lock.h:
Define _IO_lock_t_defined after defining _IO_lock_t.
Now with read consolidation which uses SYSCALL_CANCEL macro, a frame
pointer is created in the syscall code and this makes the powerpc
backtrace obtain a bogus entry for the signal handling patch.
It is because it does not setup the correct frame pointer register
(r1) based on the saved value from the kernel sigreturn. It was not
failing because the syscall frame pointer register was the same one
for the next frame (the function that actually called the syscall).
This patch fixes it by setup the next stack frame using the saved
one by the kernel sigreturn. It fixes tst-backtrace{5,6} from
the read consolidation patch.
Checked on powerpc-linux-gnu and powerpc64le-linux-gnu.
* sysdeps/powerpc/powerpc32/backtrace.c (is_sigtramp_address): Use
void* for argument type and use VDSO_SYMBOL macro.
(is_sigtramp_address_rt): Likewise.
(__backtrace): Setup expected frame pointer address for signal
handling.
* sysdeps/powerpc/powerpc64/backtrace.c (is_sigtramp_address): Use
void* for argumetn type and use VSDO_SYMBOL macro.
(__backtrace): Setup expected frame pointer address for signal
handling.
This patch consolidates the writev Linux syscall implementation on
sysdeps/unix/sysv/linux/writev.c.
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/writev.c: New file.
This patch consolidates the readv Linux syscall implementation on
sysdeps/unix/sysv/linux/readv.c.
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/readv.c: New file.
This patch consolidates the write Linux syscall implementation on
sysdeps/unix/sysv/linux/write.c.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* include/unistd.h (write): Add hidden proto.
* io/Makefile (CFLAGS-write.c): New rule.
* nptl/Makefile (CFLAGS-write.c): Likewise.
* sysdeps/unix/sysv/linux/write.c: New file.
This patch consolidates the read Linux syscall implementation on
sysdeps/unix/sysv/linux/read.c. This leads to a different frame
pointer creation on some architectures:
* It fixes BZ#21428 on aarch64, since now the returned address
for the read syscall can be correctly found out by
backtrace_symbols.
* It makes tst-backtrace{5,6} fails on powerpc due an issue on
its custom backtrace implementation. It is fixed on subsequent
patch from this set.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
[BZ #21428]
* include/unistd.h (read): Add hidden proto.
* io/Makefile (CFLAGS-read.c): New rule.
* nptl/Makefile (CFLAGS-read.c): New rule.
* sysdeps/unix/sysv/linux/read.c: New file.
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 open Linux syscall implementation on
sysdeps/unix/sysv/linux/open{64}.c. The changes are:
1. Remove open{64} from auto-generation syscalls.list.
2. Add a new open{64}.c implementation. For architectures that
define __OFF_T_MATCHES_OFF64_T the default open64 will create
alias to required open symbols.
3. Use __NR_openat as default syscall for open{64}.
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/generic/open.c: Remove file.
* sysdeps/unix/sysv/linux/generic/open64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/open64.c: Likewise.
* sysdeps/unix/sysv/linux/open.c: New file.
* sysdeps/unix/sysv/linux/open64.c (__libc_open64): Use O_LARGEFILE
only for __OFF_T_MATCHES_OFF64_T and add alias to open if the case.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Remove open
from auto-generated list.
This patch consolidates the close Linux syscall generation on
sysdeps/unix/sysv/linux/close.c.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* nptl/Makefile (CFLAGS-close.c): New flag.
* sysdeps/unix/sysv/linux/close.c: New file.
As of now we don't need tunables to be writable after they have been
set initially, so there is no point in having them writable. Put
tunable_list in .data.rel.ro so that it is set as read-only after
relocation. This also allows us to move some of the dl_* variables
that are tunables controlled into the tunables infrastructure instead
of having two copies.
In future if we ever need specific tunables to be writable at runtime,
we can split the tunable_list into two.
Regression tested on x86_64 to verify that tests continue to pass.
* scripts/gen-tunables.awk: Add attribute_relro to
tunable_list.
This patch removes wrong struct definition from eab380d (Move shared
pthread definitions to common headers) on ARM and hppa.
Checked on arm-linux-gnueabihf.
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h
(__pthread_rwlock_arch_t): Remove __data definition.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h
(__pthread_rwlock_arch_t): Likewise.
The address family splitting via format_ai_family made unpredictable
the place where the canonname field was printed. This commit adjusts
the implementation so that the ai_flags is checked for consistency
across the list, and ai_canonname must only be present on the first
list element.
Tests for AI_CANONNAME are added to resolv/tst-resolv-basic.
The default rawmemchr implementation uses memchr with size (size_t)-1,
which produces a warning with current GCC mainline. The warning seems
reasonable for normal code, so this patch uses the DIAG_* macros to
disable it.
Tested (compilation of glibc only) with build-many-glibcs.py for
arm-linux-gnueabi and powerpc64le-linux-gnu, two architectures for
which the build was previously failing. Note that the glibc testsuite
will still fail to build with GCC mainline because of
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80669>.
* string/rawmemchr.c: Include <libc-diag.h>.
(RAWMEMCHR): Disable -Wstringop-overflow around call to memchr
with size (size_t)-1.
MIPS32 has its own implementations of accept4, recvmmsg and sendmmsg
because at one point it needed to avoid socketcall being used for
those functions (MIPS32 has socketcall, but has never used it in
glibc, and so never had socket.S at the time when socketcall used such
a per-architecture file instead of C code). The current code no
longer uses socketcall based on __NR_socketcall being defined, and the
syscalls are always present on MIPS for supported kernels so the
socketcall case in the code is dead for MIPS; this patch removes the
implementations that are, as Adhemerval noted, no longer needed.
Tested compilation for mips-linux-gnu with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/mips/mips32/accept4.c: Remove file.
* sysdeps/unix/sysv/linux/mips/mips32/recvmmsg.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/sendmmsg.c: Likewise.
The accept4, recvmmsg and sendmmsg functions had macros
__ASSUME_*_SYSCALL_WITH_SOCKETCALL. Before we could assume kernels
with the relevant functionality, these macros represented the
conditions under which, on a socketcall architecture, glibc could just
call the syscall unconditionally and not have to deal with socketcall
at all for those functions, because if the syscall didn't work for
them the socketcall call wouldn't either.
Now we can assume kernels with the relevant functionality, the only
question is whether we can assume the syscall is present; if not, we
are on a socketcall architecture and just use socketcall instead.
Thus, this patch removes the macros that are no longer necessary, and
simplifies the code for accept4, recvmmsg and sendmmsg to use the same
logic as the other C implementations of socket functions that may use
a syscall or socketcall depending on kernel support.
Tested for x86_64 and x86.
* sysdeps/unix/sysv/linux/accept4.c (accept4): Use syscall if
[__ASSUME_ACCEPT4_SYSCALL], otherwise socketcall.
* sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Use syscall if
[__ASSUME_RECVMMSG_SYSCALL], otherwise socketcall.
* sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Use syscall if
[__ASSUME_SENDMMSG_SYSCALL], otherwise socketcall.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_ACCEPT4_SYSCALL): Move to general list of macros for
socket syscalls.
(__ASSUME_RECVMMSG_SYSCALL): Likewise.
(__ASSUME_SENDMMSG_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Remove.
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Remove.
* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h
(__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
This patch removes all the replicated pthread definition accross the
architectures and consolidates it on shared headers. The new
organization is as follow:
* Architecture specific definition (such as pthread types sizes) are
place in the new pthreadtypes-arch.h header in arch specific path.
* All shared structure definition are moved to a common NPTL header
at sysdeps/nptl/bits/pthreadtypes.h (with now includes the arch
specific one for internal definitions).
* Also, for C11 future thread support, both mutex and condition
definition are placed in a common header at
sysdeps/nptl/bits/thread-shared-types.h.
It is also a refactor patch without expected functional changes.
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, 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).
* posix/Makefile (headers): Add pthreadtypes-arch.h and
thread-shared-types.h.
* sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h: New file: arch
specific thread definition.
* sysdeps/alpha/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nptl/bits/thread-shared-types.h: New file: shared
thread definition between POSIX and C11.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h.: Remove file.
* sysdeps/alpha/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/nptl/bits/pthreadtypes.h: New file: common thread
definitions shared across all architectures.
Now we can assume a kernel with sendmmsg support, this patch
simplifies the implementation to be similar to that for accept4:
either using socketcall or the syscall according to whether the
syscall is known to be available, without further fallback
implementations. The __ASSUME_SENDMMSG macro is kept (now defined
unconditionally), since it's used in resolv/res_send.c.
Tested for x86_64 and x86.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL): Define unconditionally.
(__ASSUME_SENDMMSG): Likewise.
(__ASSUME_SENDMMSG_SOCKETCALL): Remove macro.
* sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Define using
sendmmsg syscall if that can be assumed to be present, socketcall
otherwise, with no fallback for runtime failure.
Now we can assume a kernel with recvmmsg support, this patch
simplifies the implementation to be similar to that for accept4:
either using socketcall or the syscall according to whether the
syscall is known to be available, without further fallback
implementations.
(In fact further simplification is possible, getting rid of the
__ASSUME_*_SYSCALL_WITH_SOCKETCALL macros now that the minimum kernel
is guaranteed support for all of accept4, recvmmsg, sendmmsg, whether
through syscalls or through socketcall. I intend to do that for all
of accept4 / recvmmsg / sendmmsg together - so making their
implementations just like those for older socket functions - once the
basic cleanup for 3.2 minimum kernel is done for sendmmsg as well as
recvmmsg.)
Tested for x86_64 and x86.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL): Define unconditionally.
(__ASSUME_RECVMMSG_SOCKETCALL): Remove macro.
(__ASSUME_RECVMMSG): Likewise.
* sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Define using
recvmmsg syscall if it can be assumed to be present, socketcall
otherwise, with no fallback for runtime failure.
This macro is defined by TS 18661-3 for supporting the _FloatN and
_FloatNx types, as well as the functions suffixed with fN.
* bits/libc-header-start.h:
(__GLIBC_USE_IEC_60559_TYPES_EXT): New macro.
* include/features.h: Describe __STDC_WANT_IEC_60559_TYPES_EXT__.
* manual/creature.texi: Likewise.
This adds the appropriate common bits for a platform to
enable float128 and expose ABI.
* math/Makefile:
(type-float128-suffix): New variable
(type-float128-routines): Likewise
(type-float128-yes): Likewise
(types): Append float128 if supported
(types-basic): New variable to control the use of templates for
float, double, and long double, but not for float128 or newer types.
(type-basic-foreach): Likewise.
* sysdeps/ieee754/float128/Makeconfig: New file.
* sysdeps/ieee754/float128/Versions: New file.
