This patch defines TIOCSER_TEMT on all architectures using the __USE_MISC
guards similar to BZ#17782 fix. Latest Linux UAPI defines TIOCSER_TEMT
with the same value for all architectures, so it is safe to use the value
as default for all ABIs.
Checked on x86_64linux-gnu and build against sparc64-linux-gnu and
powerpc64le-linux-gnu.
[BZ #17783]
* sysdeps/unix/sysv/linux/bits/termios.h [__USE_MISC] (TIOCSER_TEMT):
Define.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h [__USE_MISC]
(TIOCSER_TEMT): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h [__USE_MISC]
(TEOCSER_TEMT): Likewise.
This patch updates the Linux kernel version in tst-mman-consts.py to
4.20 (meaning that's the version for which glibc is expected to have
the same constants as the kernel, up to the exceptions listed in the
test). (Once we have more such tests sharing common infrastructure, I
expect the kernel version will be something set in the infrastructure
shared by all such tests, rather than something needing updating
separately for each test for each new kernel version.)
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/tst-mman-consts.py (main): Expect
constants to match with Linux 4.20.
The pre-ARMv7 CPUs are missing atomic compare and exchange and/or
barrier instructions. Therefore those are implemented using kernel
assistance, calling a kernel function at a specific address, and passing
the arguments in the r0 to r4 registers. This is done by specifying
registers for local variables. The a_ptr variable is placed in the r2
register and declared with __typeof (mem). According to the GCC
documentation on local register variables, if mem is a constant pointer,
the compiler may substitute the variable with its initializer in asm
statements, which may cause the corresponding operand to appear in a
different register.
This happens in __libc_start_main with the pointer to the thread counter
for static binaries (but not the shared ones):
# ifdef SHARED
unsigned int *ptr = __libc_pthread_functions.ptr_nthreads;
# ifdef PTR_DEMANGLE
PTR_DEMANGLE (ptr);
# endif
# else
extern unsigned int __nptl_nthreads __attribute ((weak));
unsigned int *const ptr = &__nptl_nthreads;
# endif
This causes static binaries using threads to crash when the GNU libc is
built with GCC 8 and most notably tst-cancel21-static.
To fix that, use the same trick than for the volatile qualifier,
defining a_ptr as a union.
Changelog:
[BZ #24034]
* sysdeps/unix/sysv/linux/arm/atomic-machine.h
(__arm_assisted_compare_and_exchange_val_32_acq): Use uint32_t rather
than __typeof (...) for the a_ptr variable.
According to ISO C99, passing the same buffer as source and destination
to sprintf, snprintf, vsprintf, or vsnprintf has undefined behavior.
Until the commit
commit 4e2f43f842
Author: Zack Weinberg <zackw@panix.com>
Date: Wed Mar 7 14:32:03 2018 -0500
Use PRINTF_FORTIFY instead of _IO_FLAGS2_FORTIFY (bug 11319)
a call to sprintf or vsprintf with overlapping buffers, for instance
vsprintf (buf, "%sTEXT", buf), would append `TEXT' into buf, while a
call to snprintf or vsnprintf would override the contents of buf.
After the aforementioned commit, the behavior of sprintf and vsprintf
changed (so that they also override the contents of buf).
This patch reverts this behavioral change, because it will likely break
applications that rely on the previous behavior, even though it is
undefined by ISO C. As noted by Szabolcs Nagy, this is used in SPEC2017
507.cactuBSSN_r/src/PUGH/PughUtils.c:
sprintf(mess," Size:");
for (i=0;i<dim+1;i++)
{
sprintf(mess,"%s %d",mess,pughGH->GFExtras[dim]->nsize[i]);
}
More important to notice is the fact that the overwriting of the
destination buffer is not the only behavior affected by the refactoring.
Before the refactoring, sprintf and vsprintf would use _IO_str_jumps,
whereas __sprintf_chk and __vsprintf_chk would use _IO_str_chk_jumps.
After the refactoring, all use _IO_str_chk_jumps, which would make
sprintf and vsprintf report buffer overflows and terminate the program.
This patch also reverts this behavior, by installing the appropriate
jump table for each *sprintf functions.
Apart from reverting the changes, this patch adds a test case that has
the old behavior hardcoded, so that regressions are noticed if something
else unintentionally changes the behavior.
Tested for powerpc64le.
This patch adds the IPV6_MULTICAST_ALL constant from Linux 4.20 to
bits/in.h.
Tested for x86_64.
* sysdeps/unix/sysv/linux/bits/in.h (IPV6_MULTICAST_ALL): New
macro.
This patch adds the PACKET_IGNORE_OUTGOING constant from Linux 4.20 to
netpacket/packet.h.
Tested for x86_64.
* sysdeps/unix/sysv/linux/netpacket/packet.h
(PACKET_IGNORE_OUTGOING): New macro.
This patch adds the HWCAP_SSBS constant from Linux 4.20 to the AArch64
bits/hwcap.h.
Tested with build-many-glibcs.py for aarch64-linux-gnu.
* sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h (HWCAP_SSBS): New
macro.
This patch updates sysdeps/unix/sysv/linux/syscall-names.list for
Linux 4.20. Although there are no new syscalls, the
riscv_flush_icache syscall has moved to asm/unistd.h (previously in
asm/syscalls.h) and so now needs to be added to the list.
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/syscall-names.list: Update kernel
version to 4.20.
(riscv_flush_icache): New syscall.
This patch updates some miscellaneous files from their upstream
sources (thereby bringing in copyright date updates for some of those
files).
Tested for x86_64, including "make pdf".
* manual/texinfo.tex: Update to version 2018-12-28.17 with
trailing whitespace removed.
* scripts/config.guess: Update to version 2019-01-01.
* scripts/config.sub: Update to version 2019-01-01.
* scripts/move-if-change: Update from gnulib.
This patch updates files coming from tzcode to the versions in tzcode
2018i. No changes elsewhere in glibc were needed.
Tested for x86_64.
* timezone/zdump.c: Update from tzcode 2018i.
* timezone/zic.c: Likewise.
From the glibc point of view, this removes duplicate macro
definitions and is obviously safe.
From the Gnulib point of view, this pacifies xlc 12.01 on AIX 7.1.
* posix/regex_internal.h:
(__attribute__, __attribute_warn_unused_result__):
Remove; already defined elsewhere.
This commit removes the custom memcpy implementation from _int_realloc
for small chunk sizes. The ncopies variable has the wrong type, and
an integer wraparound could cause the existing code to copy too few
elements (leaving the new memory region mostly uninitialized).
Therefore, removing this code fixes bug 24027.
<asm/syscalls.h> has been removed by
commit 27f8899d6002e11a6e2d995e29b8deab5aa9cc25
Author: David Abdurachmanov <david.abdurachmanov@gmail.com>
Date: Thu Nov 8 20:02:39 2018 +0100
riscv: add asm/unistd.h UAPI header
Marcin Juszkiewicz reported issues while generating syscall table for riscv
using 4.20-rc1. The patch refactors our unistd.h files to match some other
architectures.
- Add asm/unistd.h UAPI header, which has __ARCH_WANT_NEW_STAT only for 64-bit
- Remove asm/syscalls.h UAPI header and merge to asm/unistd.h
- Adjust kernel asm/unistd.h
So now asm/unistd.h UAPI header should show all syscalls for riscv.
<asm/syscalls.h> may be restored by
Subject: [PATCH] riscv: restore asm/syscalls.h UAPI header
Date: Tue, 11 Dec 2018 09:09:35 +0100
UAPI header asm/syscalls.h was merged into UAPI asm/unistd.h header,
which did resolve issue with missing syscalls macros resulting in
glibc (2.28) build failure. It also broke glibc in a different way:
asm/syscalls.h is being used by glibc. I noticed this while doing
Fedora 30/Rawhide mass rebuild.
The patch returns asm/syscalls.h header and incl. it into asm/unistd.h.
I plan to send a patch to glibc to use asm/unistd.h instead of
asm/syscalls.h
In the meantime, we use __has_include__, which was added to GCC 5, to
check if <asm/syscalls.h> exists before including it. Tested with
build-many-glibcs.py for riscv against kernel 4.19.12 and 4.20-rc7.
[BZ #24022]
* sysdeps/unix/sysv/linux/riscv/flush-icache.c: Check if
<asm/syscalls.h> exists with __has_include__ before including it.
* hurd/lookup-retry: Include <unistd.h>.
(__hurd_file_name_lookup_retry): Keep a ref on last result in `lastdir'.
Release it on return. Handle "pid" magical lookup retry.
It has been discovered that some locales use the 12-hour time formats but
do not use any AM/PM indicator thus making the time ambiguous. This
commit adds "%p" wherever it was missing. In some cases it has been
identified that a locale should use 24-hour time format rather than
12-hour. All time formats come from CLDR but this commit introduces as
few changes as possible (for example, it tries not to change the time zone
display). For the locales which are not supported by CLDR the consistency
with similar locales (which means the same language or the same country)
has been preserved: if the time formats were the same before the change
then they are still the same after the change.
The time format updates can be roughly summarized as follows:
* Most of the locales of Djibouti, Eritrea, and Ethiopia now use
"%l:%M:%S %p".
* Most of the locales of India and some surrounding countries (Bangladesh,
Nepal etc.) now use "%I:%M:%S %p %Z".
* Most of the Arabic locales now use "%Z %I:%M:%S %p".
* Ge'ez language (Eritrea and Ethiopia) now uses "%l:%M:%S፡%p" (note the
consistent use of Ethiopic wordspace character).
* Tamil (India) now uses "%p %I:%M:%S %Z".
* Chinese (Hong Kong) t_fmt now uses "%p %I<U6642>%M<U5206>%S<U79D2> %Z".
* Additionally, the following locales have been switched from 12-hour time
formats to 24-hour, according to CLDR: Arabic (Morocco), Maltese, Somali
(Kenya), and Tamil (Sri Lanka).
* Finally, the Bulgarian, Czech, and Slovak locales used 24-hour time
format correctly but their t_fmt_ampm field was not empty containing
12-hour time format which was incorrect so it is now replaced with an
empty string.
[BZ #10496]
* localedata/locales/aa_DJ (t_fmt): Set to "%l:%M:%S %p".
(t_fmt_ampm): Likewise.
* localedata/locales/aa_ER (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/aa_ER@saaho (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/aa_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/am_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/byn_ER (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/om_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/sid_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/so_DJ (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/so_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/so_SO (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/ti_ER (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/ti_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/tig_ER (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/wal_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/anp_IN (t_fmt): Set to "%I:%M:%S %p %Z".
* localedata/locales/ar_IN (t_fmt): Likewise.
* localedata/locales/bhb_IN (t_fmt): Likewise.
* localedata/locales/bho_IN (t_fmt): Likewise.
* localedata/locales/bi_VU (t_fmt): Likewise.
* localedata/locales/bn_BD (t_fmt): Likewise.
* localedata/locales/bn_IN (t_fmt): Likewise.
* localedata/locales/brx_IN (t_fmt): Likewise.
* localedata/locales/doi_IN (t_fmt): Likewise.
* localedata/locales/en_HK (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/en_IN (t_fmt): Likewise.
* localedata/locales/en_PH (t_fmt): Likewise.
* localedata/locales/gu_IN (t_fmt): Likewise.
* localedata/locales/hi_IN (t_fmt): Likewise.
* localedata/locales/hif_FJ (t_fmt): Likewise.
* localedata/locales/hne_IN (t_fmt): Likewise.
* localedata/locales/kn_IN (t_fmt): Likewise.
* localedata/locales/kok_IN (t_fmt): Likewise.
* localedata/locales/ks_IN (t_fmt): Likewise.
* localedata/locales/ks_IN@devanagari (t_fmt): Likewise.
* localedata/locales/mag_IN (t_fmt): Likewise.
* localedata/locales/mai_IN (t_fmt): Likewise.
* localedata/locales/mjw_IN (t_fmt): Likewise.
* localedata/locales/ml_IN (t_fmt): Likewise.
* localedata/locales/mni_IN (t_fmt): Likewise.
* localedata/locales/mr_IN (t_fmt): Likewise.
* localedata/locales/ms_MY (t_fmt): Likewise.
* localedata/locales/pa_IN (t_fmt): Likewise.
* localedata/locales/raj_IN (t_fmt): Likewise.
* localedata/locales/sa_IN (t_fmt): Likewise.
* localedata/locales/sat_IN (t_fmt): Likewise.
* localedata/locales/sd_IN (t_fmt): Likewise.
* localedata/locales/sd_IN@devanagari (t_fmt): Likewise.
* localedata/locales/tcy_IN (t_fmt): Likewise.
* localedata/locales/the_NP (t_fmt): Likewise.
* localedata/locales/to_TO (t_fmt): Likewise.
* localedata/locales/ur_IN (t_fmt): Likewise.
* localedata/locales/hif_FJ (d_t_fmt): Set to
"%A %d %b %Y %I:%M:%S %p".
(date_fmt): Add, set to "%A %d %b %Y %I:%M:%S %p %Z".
* localedata/locales/ar_AE (t_fmt): Set to "%Z %I:%M:%S %p".
* localedata/locales/ar_BH (t_fmt): Likewise.
* localedata/locales/ar_DZ (t_fmt): Likewise.
* localedata/locales/ar_EG (t_fmt): Likewise.
* localedata/locales/ar_IQ (t_fmt): Likewise.
* localedata/locales/ar_JO (t_fmt): Likewise.
* localedata/locales/ar_KW (t_fmt): Likewise.
* localedata/locales/ar_LB (t_fmt): Likewise.
* localedata/locales/ar_LY (t_fmt): Likewise.
* localedata/locales/ar_OM (t_fmt): Likewise.
* localedata/locales/ar_QA (t_fmt): Likewise.
* localedata/locales/ar_SD (t_fmt): Likewise.
* localedata/locales/ar_SS (t_fmt): Likewise.
* localedata/locales/ar_SY (t_fmt): Likewise.
* localedata/locales/ar_TN (t_fmt): Likewise.
* localedata/locales/ar_YE (t_fmt): Likewise.
* localedata/locales/gez_ER (t_fmt): Set to "%l:%M:%S<U1361>%p".
(t_fmt_ampm): Likewise.
* localedata/locales/gez_ET (t_fmt): Likewise.
(t_fmt_ampm): Likewise.
* localedata/locales/ta_IN (t_fmt): Set to "%p %I:%M:%S %Z".
(t_fmt_ampm): Likewise.
(d_t_fmt): Set to "%A %d %B %Y %p %I:%M:%S %Z".
* localedata/locales/zh_HK (t_fmt):
Set to "%p %I<U6642>%M<U5206>%S<U79D2> %Z".
* localedata/locales/ar_MA (t_fmt_ampm): Set to "" (empty string)
because this locale does not use the 12-hour clock.
(t_fmt): Set to "%Z %H:%M:%S".
(d_t_fmt): Set to "%d %b, %Y %Z %H:%M:%S".
* localedata/locales/mt_MT (t_fmt_ampm): Set to "" (empty string)
because this locale does not use the 12-hour clock.
(t_fmt): Set to "%H:%M:%S %Z".
(d_t_fmt): Set to "%A, %d ta %b, %Y %H:%M:%S %Z".
* localedata/locales/so_KE (t_fmt_ampm): Set to "" (empty string)
because this locale does not use the 12-hour clock.
(t_fmt): Set to "%T".
(d_t_fmt): Set to "%A, %B %e, %Y %X %Z".
(date_fmt): Set to "%A, %B %e, %X %Z %Y".
* localedata/locales/ta_LK (t_fmt_ampm): Set to "" (empty string)
because this locale does not use the 12-hour clock.
(t_fmt): Set to "%H:%M:%S %Z".
(d_t_fmt): Set to "%A %d %B %Y %H:%M:%S %Z".
* localedata/locales/bg_BG (t_fmt_ampm): Set to "" (empty string)
because this locale does not use the 12-hour clock.
* localedata/locales/cs_CZ (t_fmt_ampm): Likewise.
* localedata/locales/sk_SK (t_fmt_ampm): Likewise.
Albanian locale uses the 12-hour clock but some time formats did not
use any AM/PM indicator making the time ambiguous. This commit adds
"%p" wherever it was missing.
It also sets the correct date format because the old "%Y-%b-%d" produced
rather weird results like "2018-Sht-28".
All time formats come from CLDR but as few changes have been introduced
by this commit as possible. Some articles from MSDN and other available
online sources have been also taken into account.
[BZ #10496]
[BZ #23724]
* localedata/locales/sq_AL (t_fmt): Set to "%I:%M:%S.%p %Z".
(t_fmt_ampm): Likewise.
(d_t_fmt): Set to "%a %-d %b %Y %I:%M:%S.%p".
(date_fmt): Add, set to "%a %-d %b %Y %I:%M:%S.%p %Z".
(d_fmt): Set to "%-d.%-m.%y".
This simplifies the code, by removing stuff intended for porting
to Gnulib but no longer needed there.
* posix/regcomp.c [!_LIBC]: No need to put #ifdef _LIBC around
uses of libc_hidden_def, weak_alias.
* posix/regcomp.c, posix/regexec.c: Use __restrict rather than
_Restrict_ except for public-facing headers.
* posix/regex_internal.h (attribute_hidden) [!_LIBC]:
Remove; already defined elsewhere.
* posix/regex.c, posix/regex_internal.h:
Use __GNUC_PREREQ instead of rolling our own.
* posix/regex_internal.h (__GNUC_PREREQ): Remove duplicate defn.
The current bench-strlen compares against a slow byte-oriented strlen which
is not useful given it's too easy to beat. Remove it and compare against the
generic C strlen version and memchr.
* benchtests/bench-strlen.c (generic_strlen): New function.
(memchr_strlen): New function.
The current s_sincosf.c is faster than s_sincosf-sse2.S. On Broadwell
with FMA disabled, bench-sincosf shows:
Before After Improvement
max 154.032 114.517 34%
min 6.25 5.609 11%
mean 14.8728 12.8589 15%
* sysdeps/x86_64/fpu/s_sincosf.S: Removed.
* sysdeps/x86_64/fpu/multiarch/s_sincosf-sse2.S: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_sincosf-sse2.c: New file.
Add <sincosf_poly.h> and include it in s_sincosf.h to allow vectorized
sincosf_poly. Add x86 sincosf_poly.h to vectorize sincosf_poly. On
Broadwell, bench-sincosf shows:
Before After Improvement
max 160.273 114.198 40%
min 6.25 5.625 11%
mean 13.0325 10.6462 22%
Vectorized sincosf_poly shows
Before After Improvement
max 138.653 114.198 21%
min 5.004 5.625 -11%
mean 11.5934 10.6462 9%
Tested on x86-64 and i686 as well as with build-many-glibcs.py.
* sysdeps/ieee754/flt-32/s_sincosf.h: Include <sincosf_poly.h>.
(sincos_t, sincosf_poly, sinf_poly): Moved to ...
* sysdeps/ieee754/flt-32/sincosf_poly.h: Here. New file.
* sysdeps/x86/fpu/s_sincosf_data.c: New file.
* sysdeps/x86/fpu/sincosf_poly.h: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_sincosf-fma.c: Just include
<sysdeps/ieee754/flt-32/s_sincosf.c>.
The recent difftime changes introduced localplt test failures on nios2
and sparc32, two configurations where some soft-fp functions are
defined in / exported from libc.so, and where the difftime changes
affected the particular set of floating-point operations used in
libc.so. This patch adds those functions to localplt.data, alongside
other such functions already there. (In the sparc32 case, and more
generally on any platform where long double is a software
floating-point type, it would probably be more efficient to avoid
using long double at all in difftime, but that's a pre-existing
issue.)
Tested with build-many-glibcs.py for its nios2 and sparcv9
configurations.
[BZ #24023]
* sysdeps/unix/sysv/linux/nios2/localplt.data: Allow __floatundidf
PLT reference in libc.so.
* sysdeps/unix/sysv/linux/sparc/sparc32/localplt.data: Allow
_Q_lltoq and _Q_qtod PLT references in libc.so.
This patch updates longlong.h from GCC. There were no local changes
in glibc (the previous version was identical to the r232143 GCC
version, apart from copyright dates which had been updated in both
places), so this patch makes it identical to the version in GCC again.
Tested for x86_64 and x86. Also tested with build-many-glibcs.py for
its RISC-V configurations, as the glibc architecture with the most
substantial changes in longlong.h in this patch.
* stdlib/longlong.h: Update from GCC.
We know that building glibc with GCC 4.9 is broken on various
platforms (bug 23993). As it's more than a year since we last
increased the minimum GCC version to build glibc, this patch changes
the requirement to be GCC 5 or later (indeed, based on 4.9 having been
required for building 2.26, it would be consistent in terms of timing
to require GCC 6 or later from the 2.30 release onwards). It
deliberately just updates the configure test and corresponding
documentation, leaving removal of no-longer-needed __GNUC_PREREQ tests
for a separate patch.
In the NEWS entry, the requirement for a newer GCC version for
powerpc64le is reiterated (as in the entry for the 4.9 requirement in
2.26) to avoid suggesting the version requirement there has gone down.
(If that version goes up further as part of support for binary128 long
double, of course the wording would change at that time.)
Tested for x86_64.
[BZ #23993]
* configure.ac (libc_cv_compiler_ok): Require GCC 5 or later.
* configure: Regenerated.
* manual/install.texi (Tools for Compilation): Update minimum GCC
version.
* INSTALL: Regenerated.
Provide a 64-bit-time version of __difftime (but do not assume
__time64_t is a signed int so that Gnulib can reuse the code)
and make the 32-bit version a wrapper of it.
Current difftime expects two time_t arguments and returns a
double. To preserve source-code compatibility, its 64-bit-time
equivalent expects two __time64_t arguments but still returns
a double.
This patch was tested by running 'make check' on branch
master then applying this patch and its two predecessors and
running 'make check' again, and checking that both 'make check'
yield identical results. This was done on x86_64-linux-gnu and
i686-linux-gnu.
This patch was also functionally tested with an ad hoc userland
C program which checks the result of difftime for various pairs
of 32-bit and, for 64-bit builds, of 64-bit time_t values too.
The program was built and run against a glibc with and without
the patch, and the results compared to ensure the patch does
not change the behavior of difftime.
* include/time.h (__difftime64): Add.
* time/difftime.c (subtract): convert to 64-bit time.
* time/difftime.c (__difftime64): Add.
* time/difftime.c (__difftime): Wrap around __difftime64.
After previous cleanups, the only code in the x86 bits/mathinline.h
that is relevant with current compilers is the inline of
__ieee754_atan2l that is conditional on __LIBC_INTERNAL_MATH_INLINES
(i.e. for when libm itself is being built).
This inline is something that does belong in glibc not GCC, since
__ieee754_atan2l is a purely internal function name. This patch moves
that inline to a new sysdeps/x86/fpu/math_private.h, removing the
bits/mathinline.h header.
Note that previously the inline was only for non-SSE 32-bit x86. That
condition does not make sense, however, for a long double function; if
it's not inlined, exactly the same x87 instruction will end up getting
used by the out-of-line function, for both 32-bit and 64-bit. So that
condition is not retained in the new version.
Tested for x86_64 and x86. As expected, installed stripped shared
libraries are unchanged for 32-bit x86, but installed stripped libm.so
is changed for x86_64 because calls to __ieee754_atan2l start being
inlined where previously they were out of line calls. (The same
change to start inlining the function would presumably also apply for
32-bit built with -mfpmath=sse, but that's not a configuration I've
tested.)
* sysdeps/x86/fpu/math_private.h: New file.
* sysdeps/x86/fpu/bits/mathinline.h: Remove.
Continuing the removal of bits/mathinline.h inlines that would better
be done by the compiler, this patch removes x86 inlines for sinh, cosh
and tanh functions (inlines only previously present for fast-math,
non-SSE 32-bit x86). I've filed
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88556> for adding such
inlines as an optimization in GCC.
I believe the only remaining part of the x86 bits/mathinline.h that
does anything useful with current compilers after this patch is the
__LIBC_INTERNAL_MATH_INLINES inline of __ieee754_atan2l; I intend to
remove the whole header and move that inline to a sysdeps
math_private.h header in a subsequent patch.
Tested for x86_64 and x86.
* sysdeps/x86/fpu/bits/mathinline.h (sinh): Remove inline
definition.
(cosh): Likewise.
(tanh): Likewise.
Add support for AT_L1I_CACHESIZE, AT_L1I_CACHEGEOMETRY,
AT_L1D_CACHESIZE, AT_L1D_CACHEGEOMETRY, AT_L2_CACHESIZE,
AT_L2_CACHEGEOMETRY, AT_L3_CACHESIZE and AT_L3_CACHEGEOMETRY when
LD_SHOW_AUXV=1.
AT_L*_CACHESIZE is printed as decimal and represent the number of
bytes of the cache.
AT_L*_CACHEGEOMETRY is treated in order to specify the cache line size
and its associativity.
Example output from a POWER8:
AT_L1I_CACHESIZE: 32768
AT_L1I_CACHEGEOMETRY: 128B line size, 8-way set associative
AT_L1D_CACHESIZE: 65536
AT_L1D_CACHEGEOMETRY: 128B line size, 8-way set associative
AT_L2_CACHESIZE: 524288
AT_L2_CACHEGEOMETRY: 128B line size, 8-way set associative
AT_L3_CACHESIZE: 8388608
AT_L3_CACHEGEOMETRY: 128B line size, 8-way set associative
Some of the new types are longer than the previous ones, requiring to
increase the indentation in order to keep the values aligned.
* elf/dl-sysdep.c (auxvars): Add AT_L1I_CACHESIZE,
AT_L1I_CACHEGEOMETRY, AT_L1D_CACHESIZE, AT_L1D_CACHEGEOMETRY,
AT_L2_CACHESIZE, AT_L2_CACHEGEOMETRY, AT_L3_CACHESIZE and
AT_L3_CACHEGEOMETRY. Fix indentation when printing the other
fields.
(_dl_show_auxv): Give a special treatment to
AT_L1I_CACHEGEOMETRY, AT_L1D_CACHEGEOMETRY, AT_L2_CACHEGEOMETRY
and AT_L3_CACHEGEOMETRY.
* sysdeps/powerpc/dl-procinfo.h (cache_geometry): New function.
(_dl_procinfo): Fix indentation when printing AT_HWCAP and
AT_HWCAP2. Add support for AT_L1I_CACHEGEOMETRY,
AT_L1D_CACHEGEOMETRY, AT_L2_CACHEGEOMETRY and AT_L3_CACHEGEOMETRY.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
