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Author SHA1 Message Date
Rafal Luzynski 22390764f9 Documentation to the above changes (bug 10871). 
[BZ #10871]
	* manual/locale.texi: Document ALTMON_1..12 constants for
	nl_langinfo.  Specify when to use ALTMON instead of MON.
	* manual/time.texi (strftime, strptime): Document GNU extension
	permitting O modifier with %B and %b.  Specify when to use
	%OB instead of %B.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
 2018-01-22 11:26:55 +01:00
Joseph Myers 66ac23dec2 Update miscellaneous files from upstream sources. 
This patch updates various files from their upstream sources.  This
brings in copyright date updates for some of those files.

Tested for x86_64.

	* manual/texinfo.tex: Update to version 2017-12-26.21 with
	trailing whitespace removed.
	* scripts/config.guess: Update to version 2018-01-01.
	* scripts/config.sub: Update to version 2018-01-01.
	* scripts/move-if-change: Update from gnulib.
 2018-01-01 18:05:06 +00:00
Joseph Myers 09533208fe Update copyright dates not handled by scripts/update-copyrights. 
I've updated copyright dates in glibc for 2018.  This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.

Please remember to include 2018 in the dates for any new files added
in future (which means updating any existing uncommitted patches you
have that add new files to use the new copyright dates in them).

	* NEWS: Update copyright dates.
	* catgets/gencat.c (print_version): Likewise.
	* csu/version.c (banner): Likewise.
	* debug/catchsegv.sh: Likewise.
	* debug/pcprofiledump.c (print_version): Likewise.
	* debug/xtrace.sh (do_version): Likewise.
	* elf/ldconfig.c (print_version): Likewise.
	* elf/ldd.bash.in: Likewise.
	* elf/pldd.c (print_version): Likewise.
	* elf/sotruss.sh: Likewise.
	* elf/sprof.c (print_version): Likewise.
	* iconv/iconv_prog.c (print_version): Likewise.
	* iconv/iconvconfig.c (print_version): Likewise.
	* locale/programs/locale.c (print_version): Likewise.
	* locale/programs/localedef.c (print_version): Likewise.
	* login/programs/pt_chown.c (print_version): Likewise.
	* malloc/memusage.sh (do_version): Likewise.
	* malloc/memusagestat.c (print_version): Likewise.
	* malloc/mtrace.pl: Likewise.
	* manual/libc.texinfo: Likewise.
	* nptl/version.c (banner): Likewise.
	* nscd/nscd.c (print_version): Likewise.
	* nss/getent.c (print_version): Likewise.
	* nss/makedb.c (print_version): Likewise.
	* posix/getconf.c (main): Likewise.
	* scripts/test-installation.pl: Likewise.
	* sysdeps/unix/sysv/linux/lddlibc4.c (main): Likewise.
 2018-01-01 00:41:16 +00:00
Joseph Myers 688903eb3e Update copyright dates with scripts/update-copyrights. 
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
 2018-01-01 00:32:25 +00:00
Aurelien Jarno 54e4efc287 manual: clarify errno value on success [BZ #22615] 
The current glibc manual is ambiguous about the errno value on success
and suggests that it is left unchanged. Some functions might and
sometimes do change the errno value, however they never set it to 0.

This patch from Zack Weinberg clarifies this section of the manual.

Changelog:
	[BZ #22615]
	* manual/errno.texi (Checking for Errors): Explicitly say that errno
	might be set on success.
 2017-12-29 14:44:57 +01:00
Aurelien Jarno f5c558f3ec manual: fix a typo in strtoul description [BZ #21161] 
Typo reported by Vincent Lefèvre: 'retrict' -> 'restrict'.

Changelog:
	[BZ #21161]
	* manual/arith.texi (strtoul): Fix a typo.
 2017-12-23 15:01:13 +01:00
Aurelien Jarno e65a5644e6 manual: fix finite description [BZ #22596] 
That way it matches the standard and the behaviour of the finite
function.

Changelog:
	[BZ #22596]
	* manual/arith.texi (finite): Fix the description of the return
	value.
 2017-12-23 11:48:28 +01:00
Florian Weimer bad7a0c81f copy_file_range: New function to copy file data 
The semantics are based on the Linux system call, but a very close
emulation in user space is provided.
 2017-12-22 10:55:40 +01:00
Joseph Myers 41d11b15a1 Update miscellaneous files from upstream sources. 
This patch updates various miscellaneous files from their upstream
sources.

Tested for x86_64, including "make pdf".

	* manual/texinfo.tex: Update to version 2017-12-18.20 with
	trailing whitespace removed.
	* scripts/config.guess: Update to version 2017-12-17.
	* scripts/config.sub: Update to version 2017-11-23.
	* scripts/install-sh: Update to version 2017-09-23.17.
	* scripts/move-if-change: Update to version 2017-09-13 06:45.
 2017-12-20 22:28:20 +00:00
H.J. Lu 126adc89d8 Document that --enable-static-pie implies PIE 
To build static PIE, all .o files are compiled with -fPIE.  Since
--enable-static-pie is designed to provide additional security hardening
benefits, it also implies that glibc programs and tests are created as
dynamic position independent executables (PIE) by default for better
security hardening.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>

	* manual/install.texi: Document that --enable-static-pie
	implies PIE.
	* INSTALL: Regenerated.
 2017-12-19 13:51:16 -08:00
Joseph Myers f1e005022e Revert exp reimplementation (causes test failures). 
Revert:

	2017-12-19  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/x86_64/fpu/libm-test-ulps: Update.

	2017-12-19  Patrick McGehearty  <patrick.mcgehearty@oracle.com>

	* sysdeps/ieee754/dbl-64/e_exp.c: Include <math-svid-compat.h> and
	<errno.h>.  Include "eexp.tbl".
	(half): New constant.
	(one): Likewise.
	(__ieee754_exp): Rewrite.
	(__slowexp): Remove prototype.
	* sysdeps/ieee754/dbl-64/eexp.tbl: New file.
	* sysdeps/ieee754/dbl-64/slowexp.c: Remove file.
	* sysdeps/i386/fpu/slowexp.c: Likewise.
	* sysdeps/ia64/fpu/slowexp.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/slowexp.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Likewise.
	* sysdeps/generic/math_private.h (__slowexp): Remove prototype.
	* sysdeps/ieee754/dbl-64/e_pow.c: Remove mention of slowexp.c in
	comment.
	* sysdeps/powerpc/power4/fpu/Makefile [$(subdir) = math]
	(CPPFLAGS-slowexp.c): Remove variable.
	* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
	Remove slowexp-fma, slowexp-fma4 and slowexp-avx.
	(CFLAGS-slowexp-fma.c): Remove variable.
	(CFLAGS-slowexp-fma4.c): Likewise.
	(CFLAGS-slowexp-avx.c): Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Do not
	define as macro.
	* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Likewise.
	* math/Makefile (type-double-routines): Remove slowexp.
	* manual/probes.texi (slowexp_p6): Remove.
	(slowexp_p32): Likewise.
 2017-12-19 18:11:37 +00:00
Patrick McGehearty 6fd0a3c6a8 Improve __ieee754_exp() performance by greater than 5x on sparc/x86. 
These changes will be active for all platforms that don't provide
their own exp() routines. They will also be active for ieee754
versions of ccos, ccosh, cosh, csin, csinh, sinh, exp10, gamma, and
erf.

Typical performance gains is typically around 5x when measured on
Sparc s7 for common values between exp(1) and exp(40).

Using the glibc perf tests on sparc,
      sparc (nsec)    x86 (nsec)
      old     new     old     new
max   17629   395    5173     144
min     399    54      15      13
mean   5317   200    1349      23

The extreme max times for the old (ieee754) exp are due to the
multiprecision computation in the old algorithm when the true value is
very near 0.5 ulp away from an value representable in double
precision. The new algorithm does not take special measures for those
cases. The current glibc exp perf tests overrepresent those values.
Informal testing suggests approximately one in 200 cases might
invoke the high cost computation. The performance advantage of the new
algorithm for other values is still large but not as large as indicated
by the chart above.

Glibc correctness tests for exp() and expf() were run. Within the
test suite 3 input values were found to cause 1 bit differences (ulp)
when "FE_TONEAREST" rounding mode is set. No differences in exp() were
seen for the tested values for the other rounding modes.
Typical example:
exp(-0x1.760cd2p+0)  (-1.46113312244415283203125)
 new code:    2.31973271630014299393707e-01   0x1.db14cd799387ap-3
 old code:    2.31973271630014271638132e-01   0x1.db14cd7993879p-3
    exp    =  2.31973271630014285508337 (high precision)
Old delta: off by 0.49 ulp
New delta: off by 0.51 ulp

In addition, because ieee754_exp() is used by other routines, cexp()
showed test results with very small imaginary input values where the
imaginary portion of the result was off by 3 ulp when in upward
rounding mode, but not in the other rounding modes.  For x86, tgamma
showed a few values where the ulp increased to 6 (max ulp for tgamma
is 5). Sparc tgamma did not show these failures.  I presume the tgamma
differences are due to compiler optimization differences within the
gamma function.The gamma function is known to be difficult to compute
accurately.

	* sysdeps/ieee754/dbl-64/e_exp.c: Include <math-svid-compat.h> and
	<errno.h>.  Include "eexp.tbl".
	(half): New constant.
	(one): Likewise.
	(__ieee754_exp): Rewrite.
	(__slowexp): Remove prototype.
	* sysdeps/ieee754/dbl-64/eexp.tbl: New file.
	* sysdeps/ieee754/dbl-64/slowexp.c: Remove file.
	* sysdeps/i386/fpu/slowexp.c: Likewise.
	* sysdeps/ia64/fpu/slowexp.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/slowexp.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Likewise.
	* sysdeps/generic/math_private.h (__slowexp): Remove prototype.
	* sysdeps/ieee754/dbl-64/e_pow.c: Remove mention of slowexp.c in
	comment.
	* sysdeps/powerpc/power4/fpu/Makefile [$(subdir) = math]
	(CPPFLAGS-slowexp.c): Remove variable.
	* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
	Remove slowexp-fma, slowexp-fma4 and slowexp-avx.
	(CFLAGS-slowexp-fma.c): Remove variable.
	(CFLAGS-slowexp-fma4.c): Likewise.
	(CFLAGS-slowexp-avx.c): Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Do not
	define as macro.
	* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Likewise.
	* math/Makefile (type-double-routines): Remove slowexp.
	* manual/probes.texi (slowexp_p6): Remove.
	(slowexp_p32): Likewise.
 2017-12-19 17:27:31 +00:00
H.J. Lu 9d7a3741c9 Add --enable-static-pie configure option to build static PIE [BZ #19574] 
Static PIE extends address space layout randomization to static
executables.  It provides additional security hardening benefits at
the cost of some memory and performance.

Dynamic linker, ld.so, is a standalone program which can be loaded at
any address.  This patch adds a configure option, --enable-static-pie,
to embed the part of ld.so in static executable to create static position
independent executable (static PIE).  A static PIE is similar to static
executable, but can be loaded at any address without help from a dynamic
linker.  When --enable-static-pie is used to configure glibc, libc.a is
built as PIE and all static executables, including tests, are built as
static PIE.  The resulting libc.a can be used together with GCC 8 or
above to build static PIE with the compiler option, -static-pie.  But
GCC 8 isn't required to build glibc with --enable-static-pie.  Only GCC
with PIE support is needed.  When an older GCC is used to build glibc
with --enable-static-pie, proper input files are passed to linker to
create static executables as static PIE, together with "-z text" to
prevent dynamic relocations in read-only segments, which are not allowed
in static PIE.

The following changes are made for static PIE:

1. Add a new function, _dl_relocate_static_pie, to:
   a. Get the run-time load address.
   b. Read the dynamic section.
   c. Perform dynamic relocations.
Dynamic linker also performs these steps.  But static PIE doesn't load
any shared objects.
2. Call _dl_relocate_static_pie at entrance of LIBC_START_MAIN in
libc.a.  crt1.o, which is used to create dynamic and non-PIE static
executables, is updated to include a dummy _dl_relocate_static_pie.
rcrt1.o is added to create static PIE, which will link in the real
_dl_relocate_static_pie.  grcrt1.o is also added to create static PIE
with -pg.  GCC 8 has been updated to support rcrt1.o and grcrt1.o for
static PIE.

Static PIE can work on all architectures which support PIE, provided:

1. Target must support accessing of local functions without dynamic
relocations, which is needed in start.S to call __libc_start_main with
function addresses of __libc_csu_init, __libc_csu_fini and main.  All
functions in static PIE are local functions.  If PIE start.S can't reach
main () defined in a shared object, the code sequence:

	pass address of local_main to __libc_start_main
	...

local_main:
	tail call to main via PLT

can be used.
2. start.S is updated to check PIC instead SHARED for PIC code path and
avoid dynamic relocation, when PIC is defined and SHARED isn't defined,
to support static PIE.
3. All assembly codes are updated check PIC instead SHARED for PIC code
path to avoid dynamic relocations in read-only sections.
4. All assembly codes are updated check SHARED instead PIC for static
symbol name.
5. elf_machine_load_address in dl-machine.h are updated to support static
PIE.
6. __brk works without TLS nor dynamic relocations in read-only section
so that it can be used by __libc_setup_tls to initializes TLS in static
PIE.

NB: When glibc is built with GCC defaulted to PIE, libc.a is compiled
with -fPIE, regardless if --enable-static-pie is used to configure glibc.
When glibc is configured with --enable-static-pie, libc.a is compiled
with -fPIE, regardless whether GCC defaults to PIE or not.  The same
libc.a can be used to build both static executable and static PIE.
There is no need for separate PIE copy of libc.a.

On x86-64, the normal static sln:

   text	   data	    bss	    dec	    hex	filename
 625425	   8284	   5456	 639165	  9c0bd	elf/sln

the static PIE sln:

   text	   data	    bss	    dec	    hex	filename
 657626	  20636	   5392	 683654	  a6e86	elf/sln

The code size is increased by 5% and the binary size is increased by 7%.

Linker requirements to build glibc with --enable-static-pie:

1. Linker supports --no-dynamic-linker to remove PT_INTERP segment from
static PIE.
2. Linker can create working static PIE.  The x86-64 linker needs the
fix for

https://sourceware.org/bugzilla/show_bug.cgi?id=21782

The i386 linker needs to be able to convert "movl main@GOT(%ebx), %eax"
to "leal main@GOTOFF(%ebx), %eax" if main is defined locally.

Binutils 2.29 or above are OK for i686 and x86-64.  But linker status for
other targets need to be verified.

3. Linker should resolve undefined weak symbols to 0 in static PIE:

https://sourceware.org/bugzilla/show_bug.cgi?id=22269

4. Many ELF backend linkers incorrectly check bfd_link_pic for TLS
relocations, which should check bfd_link_executable instead:

https://sourceware.org/bugzilla/show_bug.cgi?id=22263

Tested on aarch64, i686 and x86-64.

Using GCC 7 and binutils master branch, build-many-glibcs.py with
--enable-static-pie with all patches for static PIE applied have the
following build successes:

PASS: glibcs-aarch64_be-linux-gnu build
PASS: glibcs-aarch64-linux-gnu build
PASS: glibcs-armeb-linux-gnueabi-be8 build
PASS: glibcs-armeb-linux-gnueabi build
PASS: glibcs-armeb-linux-gnueabihf-be8 build
PASS: glibcs-armeb-linux-gnueabihf build
PASS: glibcs-arm-linux-gnueabi build
PASS: glibcs-arm-linux-gnueabihf build
PASS: glibcs-arm-linux-gnueabihf-v7a build
PASS: glibcs-arm-linux-gnueabihf-v7a-disable-multi-arch build
PASS: glibcs-m68k-linux-gnu build
PASS: glibcs-microblazeel-linux-gnu build
PASS: glibcs-microblaze-linux-gnu build
PASS: glibcs-mips64el-linux-gnu-n32 build
PASS: glibcs-mips64el-linux-gnu-n32-nan2008 build
PASS: glibcs-mips64el-linux-gnu-n32-nan2008-soft build
PASS: glibcs-mips64el-linux-gnu-n32-soft build
PASS: glibcs-mips64el-linux-gnu-n64 build
PASS: glibcs-mips64el-linux-gnu-n64-nan2008 build
PASS: glibcs-mips64el-linux-gnu-n64-nan2008-soft build
PASS: glibcs-mips64el-linux-gnu-n64-soft build
PASS: glibcs-mips64-linux-gnu-n32 build
PASS: glibcs-mips64-linux-gnu-n32-nan2008 build
PASS: glibcs-mips64-linux-gnu-n32-nan2008-soft build
PASS: glibcs-mips64-linux-gnu-n32-soft build
PASS: glibcs-mips64-linux-gnu-n64 build
PASS: glibcs-mips64-linux-gnu-n64-nan2008 build
PASS: glibcs-mips64-linux-gnu-n64-nan2008-soft build
PASS: glibcs-mips64-linux-gnu-n64-soft build
PASS: glibcs-mipsel-linux-gnu build
PASS: glibcs-mipsel-linux-gnu-nan2008 build
PASS: glibcs-mipsel-linux-gnu-nan2008-soft build
PASS: glibcs-mipsel-linux-gnu-soft build
PASS: glibcs-mips-linux-gnu build
PASS: glibcs-mips-linux-gnu-nan2008 build
PASS: glibcs-mips-linux-gnu-nan2008-soft build
PASS: glibcs-mips-linux-gnu-soft build
PASS: glibcs-nios2-linux-gnu build
PASS: glibcs-powerpc64le-linux-gnu build
PASS: glibcs-powerpc64-linux-gnu build
PASS: glibcs-tilegxbe-linux-gnu-32 build
PASS: glibcs-tilegxbe-linux-gnu build
PASS: glibcs-tilegx-linux-gnu-32 build
PASS: glibcs-tilegx-linux-gnu build
PASS: glibcs-tilepro-linux-gnu build

and the following build failures:

FAIL: glibcs-alpha-linux-gnu build

elf/sln is failed to link due to:

assertion fail bfd/elf64-alpha.c:4125

This is caused by linker bug and/or non-PIC code in PIE libc.a.

FAIL: glibcs-hppa-linux-gnu build

elf/sln is failed to link due to:

collect2: fatal error: ld terminated with signal 11 [Segmentation fault]

https://sourceware.org/bugzilla/show_bug.cgi?id=22537

FAIL: glibcs-ia64-linux-gnu build

elf/sln is failed to link due to:

collect2: fatal error: ld terminated with signal 11 [Segmentation fault]

FAIL: glibcs-powerpc-linux-gnu build
FAIL: glibcs-powerpc-linux-gnu-soft build
FAIL: glibcs-powerpc-linux-gnuspe build
FAIL: glibcs-powerpc-linux-gnuspe-e500v1 build

elf/sln is failed to link due to:

ld: read-only segment has dynamic relocations.

This is caused by linker bug and/or non-PIC code in PIE libc.a.  See:

https://sourceware.org/bugzilla/show_bug.cgi?id=22264

FAIL: glibcs-powerpc-linux-gnu-power4 build

elf/sln is failed to link due to:

findlocale.c:96:(.text+0x22c): @local call to ifunc memchr

This is caused by linker bug and/or non-PIC code in PIE libc.a.

FAIL: glibcs-s390-linux-gnu build

elf/sln is failed to link due to:

collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped

assertion fail bfd/elflink.c:14299

This is caused by linker bug and/or non-PIC code in PIE libc.a.

FAIL: glibcs-sh3eb-linux-gnu build
FAIL: glibcs-sh3-linux-gnu build
FAIL: glibcs-sh4eb-linux-gnu build
FAIL: glibcs-sh4eb-linux-gnu-soft build
FAIL: glibcs-sh4-linux-gnu build
FAIL: glibcs-sh4-linux-gnu-soft build

elf/sln is failed to link due to:

ld: read-only segment has dynamic relocations.

This is caused by linker bug and/or non-PIC code in PIE libc.a.  See:

https://sourceware.org/bugzilla/show_bug.cgi?id=22263

Also TLS code sequence in SH assembly syscalls in glibc doesn't match TLS
code sequence expected by ld:

https://sourceware.org/bugzilla/show_bug.cgi?id=22270

FAIL: glibcs-sparc64-linux-gnu build
FAIL: glibcs-sparcv9-linux-gnu build
FAIL: glibcs-tilegxbe-linux-gnu build
FAIL: glibcs-tilegxbe-linux-gnu-32 build
FAIL: glibcs-tilegx-linux-gnu build
FAIL: glibcs-tilegx-linux-gnu-32 build
FAIL: glibcs-tilepro-linux-gnu build

elf/sln is failed to link due to:

ld: read-only segment has dynamic relocations.

This is caused by linker bug and/or non-PIC code in PIE libc.a.  See:

https://sourceware.org/bugzilla/show_bug.cgi?id=22263

	[BZ #19574]
	* INSTALL: Regenerated.
	* Makeconfig (real-static-start-installed-name): New.
	(pic-default): Updated for --enable-static-pie.
	(pie-default): New for --enable-static-pie.
	(default-pie-ldflag): Likewise.
	(+link-static-before-libc): Replace $(DEFAULT-LDFLAGS-$(@F))
	with $(if $($(@F)-no-pie),$(no-pie-ldflag),$(default-pie-ldflag)).
	Replace $(static-start-installed-name) with
	$(real-static-start-installed-name).
	(+prectorT): Updated for --enable-static-pie.
	(+postctorT): Likewise.
	(CFLAGS-.o): Add $(pie-default).
	(CFLAGS-.op): Likewise.
	* NEWS: Mention --enable-static-pie.
	* config.h.in (ENABLE_STATIC_PIE): New.
	* configure.ac (--enable-static-pie): New configure option.
	(have-no-dynamic-linker): New LIBC_CONFIG_VAR.
	(have-static-pie): Likewise.
	Enable static PIE if linker supports --no-dynamic-linker.
	(ENABLE_STATIC_PIE): New AC_DEFINE.
	(enable-static-pie): New LIBC_CONFIG_VAR.
	* configure: Regenerated.
	* csu/Makefile (omit-deps): Add r$(start-installed-name) and
	gr$(start-installed-name) for --enable-static-pie.
	(extra-objs): Likewise.
	(install-lib): Likewise.
	(extra-objs): Add static-reloc.o and static-reloc.os
	($(objpfx)$(start-installed-name)): Also depend on
	$(objpfx)static-reloc.o.
	($(objpfx)r$(start-installed-name)): New.
	($(objpfx)g$(start-installed-name)): Also depend on
	$(objpfx)static-reloc.os.
	($(objpfx)gr$(start-installed-name)): New.
	* csu/libc-start.c (LIBC_START_MAIN): Call _dl_relocate_static_pie
	in libc.a.
	* csu/libc-tls.c (__libc_setup_tls): Add main_map->l_addr to
	initimage.
	* csu/static-reloc.c: New file.
	* elf/Makefile (routines): Add dl-reloc-static-pie.
	(elide-routines.os): Likewise.
	(DEFAULT-LDFLAGS-tst-tls1-static-non-pie): Removed.
	(tst-tls1-static-non-pie-no-pie): New.
	* elf/dl-reloc-static-pie.c: New file.
	* elf/dl-support.c (_dl_get_dl_main_map): New function.
	* elf/dynamic-link.h (ELF_DURING_STARTUP): Also check
	STATIC_PIE_BOOTSTRAP.
	* elf/get-dynamic-info.h (elf_get_dynamic_info): Likewise.
	* gmon/Makefile (tests): Add tst-gmon-static-pie.
	(tests-static): Likewise.
	(DEFAULT-LDFLAGS-tst-gmon-static): Removed.
	(tst-gmon-static-no-pie): New.
	(CFLAGS-tst-gmon-static-pie.c): Likewise.
	(CRT-tst-gmon-static-pie): Likewise.
	(tst-gmon-static-pie-ENV): Likewise.
	(tests-special): Likewise.
	($(objpfx)tst-gmon-static-pie.out): Likewise.
	(clean-tst-gmon-static-pie-data): Likewise.
	($(objpfx)tst-gmon-static-pie-gprof.out): Likewise.
	* gmon/tst-gmon-static-pie.c: New file.
	* manual/install.texi: Document --enable-static-pie.
	* sysdeps/generic/ldsodefs.h (_dl_relocate_static_pie): New.
	(_dl_get_dl_main_map): Likewise.
	* sysdeps/i386/configure.ac: Check if linker supports static PIE.
	* sysdeps/x86_64/configure.ac: Likewise.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure: Likewise.
	* sysdeps/mips/Makefile (ASFLAGS-.o): Add $(pie-default).
	(ASFLAGS-.op): Likewise.
 2017-12-15 17:12:14 -08:00
Joseph Myers 8df5d34720 Remove --with-fp / --without-fp. 
There is a configure option --without-fp that specifies that nofpu
sysdeps directories should be used instead of fpu directories.

For most glibc configurations, this option is of no use: either there
is no valid nofpu variant of that configuration, or there are no fpu
or nofpu sysdeps directories for that processor and so the option does
nothing.  For a few configurations, if you are using a soft-float
compiler this option is required, and failing to use it generally
results in compilation errors from inline asm using unavailable
floating-point instructions.

We're moving away from --with-cpu to configuring glibc based on how
the compiler generates code, and it is natural to do so for
--without-fp as well; in most cases the soft-float and hard-float ABIs
are incompatible so you have no hope of building a working glibc with
an inappropriately configured compiler or libgcc.

This patch eliminates --without-fp, replacing it entirely by automatic
configuration based on the compiler.  Configurations for which this is
relevant (coldfire / mips / powerpc32 / sh) define a variable
with_fp_cond in their preconfigure fragments (under the same
conditions under which those fragments do anything); this is a
preprocessor conditional which the toplevel configure script then uses
in a test to determine which sysdeps directories to use.

The config.make with-fp variable remains.  It's used only by powerpc
(sysdeps/powerpc/powerpc32/Makefile) to add -mhard-float to various
flags variables.  For powerpc, -mcpu= options can imply use of
soft-float.  That could be an issue if you want to build for
e.g. 476fp, but are using --with-cpu=476 because there isn't a 476fp
sysdeps directory.  If in future we eliminate --with-cpu and replace
it entirely by testing the compiler, it would be natural at that point
to eliminate that code as well (as the user should then just use a
compiler defaulting to 476fp and the 476 sysdeps directory would be
used automatically).

Tested for x86_64, and tested with build-many-glibcs.py that installed
shared libraries are unchanged by this patch.

	* configure.ac (--with-fp): Remove configure option.
	(with_fp_cond): New variable.
	(libc_cv_with_fp): New configure test.  Use this variable instead
	of with_fp.
	* configure: Regenerated.
	* config.make.in (with-fp): Use @libc_cv_with_fp@.
	* manual/install.texi (Configuring and compiling): Remove
	--without-fp.
	* INSTALL: Regenerated.
	* sysdeps/m68k/preconfigure (with_fp_cond): Define for ColdFire.
	* sysdeps/mips/preconfigure (with_fp_cond): Define.
	* sysdeps/powerpc/preconfigure (with_fp_cond): Define for 32-bit.
	* sysdeps/sh/preconfigure (with_fp_cond): Define.
	* scripts/build-many-glibcs.py (Context.add_all_configs): Do not
	use --without-fp to configure glibc.
 2017-12-12 13:56:47 +00:00
Rical Jasan 0cee1257a9 manual: Fix a typo in locale.texi. 
* manual/locale.texi (nl_langinfo): Fix a typo.
 2017-12-12 03:21:53 -08:00
Aurelien Jarno f54ad2f9ea manual/conf.texi: add a missing underscore in front of SC_SSIZE_MAX [BZ #22588] 
Changelog:
	* manual/conf.texi (SC_SSIZE_MAX): Rename into _SC_SSIZE_MAX.
 2017-12-12 00:11:29 +01:00
Adhemerval Zanella c9cd7b0ce5 powerpc: POWER8 memcpy optimization for cached memory 
On POWER8, unaligned memory accesses to cached memory has little impact
on performance as opposed to its ancestors.

It is disabled by default and will only be available when the tunable
glibc.tune.cached_memopt is set to 1.

                 __memcpy_power8_cached      __memcpy_power7
============================================================
    max-size=4096:     33325.70 ( 12.65%)        38153.00
    max-size=8192:     32878.20 ( 11.17%)        37012.30
   max-size=16384:     33782.20 ( 11.61%)        38219.20
   max-size=32768:     33296.20 ( 11.30%)        37538.30
   max-size=65536:     33765.60 ( 10.53%)        37738.40

	* manual/tunables.texi (Hardware Capability Tunables): Document
	glibc.tune.cached_memopt.
	* sysdeps/powerpc/cpu-features.c: New file.
	* sysdeps/powerpc/cpu-features.h: New file.
	* sysdeps/powerpc/dl-procinfo.c [!IS_IN(ldconfig)]: Add
	_dl_powerpc_cpu_features.
	* sysdeps/powerpc/dl-tunables.list: New file.
	* sysdeps/powerpc/ldsodefs.h: Include cpu-features.h.
	* sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h
	(INIT_ARCH): Initialize use_aligned_memopt.
	* sysdeps/powerpc/powerpc64/dl-machine.h [defined(SHARED &&
	IS_IN(rtld))]: Restrict dl_platform_init availability and
	initialize CPU features used by tunables.
	* sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines):
	Add memcpy-power8-cached.
	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: Add
	__memcpy_power8_cached.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy-power8-cached.S:
	New file.

Reviewed-by: Rajalakshmi Srinivasaraghavan  <raji@linux.vnet.ibm.com>
 2017-12-11 17:39:42 -02:00
Joseph Myers 1f9055ce04 Add _Float32 function aliases. 
This patch concludes filling out TS 18661-3 support for different
types by adding *f32 function aliases of float functions to support
_Float32.  As with _Float64 and _Float32x, this is supported for all
glibc configurations.  As with the previous such patches there are
some x86 ulps updates because of inline functions present for float
but not for _Float32.  The patch also has the usual
bits/floatn-common.h update, symbol versions, ABI baselines updates,
test enablement and documentation.

Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.

	* bits/floatn-common.h (__HAVE_FLOAT32): Define to 1.
	* manual/math.texi (Mathematics): Document support for _Float32.
	* math/Makefile (test-types): Add float32.
	* math/Versions (GLIBC_2.27): Add _Float32 functions.
	* stdlib/Versions (GLIBC_2.27): Likewise.
	* wcsmbs/Versions (GLIBC_2.27): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.

	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
 2017-12-07 00:48:31 +00:00
Joseph Myers 0d93b7fd7c Add _Float64, _Float32x function aliases. 
This patch continues filling out TS 18661-3 support by adding *f64 and
*f32x function aliases, supporting _Float64 and _Float32x, as aliases
for double functions.  These types are supported for all glibc
configurations.  The API corresponds exactly to that for _Float128 and
_Float64x.  _Float32 aliases to float functions remain to be added in
subsequent patches to complete this process (then there are a few
miscellaneous functions in TS 18661-3 to implement that aren't simply
versions of existing functions for new types).

The patch enables the feature in bits/floatn-common.h, adds symbol
versions and documentation with updates to ABI baselines, and arranges
for the libm functions for the new types to be tested.  As with the
_Float64x changes there are some x86 ulps updates because of header
inlines not used for the new types (and one other change to the
non-multiarch libm-test-ulps, which I suppose comes from using a
different compiler version / configuration from when it was last
regenerated).

Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.

	* bits/floatn-common.h (__HAVE_FLOAT64): Define to 1.
	(__HAVE_FLOAT32X): Likewise.
	* manual/math.texi (Mathematics): Document support for _Float64
	and _Float32x.
	* math/Makefile (test-types): Add float64 and float32x.
	* math/Versions (GLIBC_2.27): Add _Float64 and _Float32x
	functions.
	* stdlib/Versions (GLIBC_2.27): Likewise.
	* wcsmbs/Versions (GLIBC_2.27): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
 2017-12-06 00:58:03 +00:00
Rogerio Alves 07ed18d26a Add elision tunables 
This patch adds several new tunables to control the behavior of
elision on supported platforms[1].   Since elision now depends
on tunables, we should always *compile* with elision enabled,
and leave the code disabled, but available for runtime
selection.  This gives us *much* better compile-time testing of
the existing code to avoid bit-rot[2].

Tested on ppc, ppc64, ppc64le, s390x and x86_64.

[1] This part of the patch was initially proposed by
Paul Murphy but was "staled" because the framework have changed
since the patch was originally proposed:

https://patchwork.sourceware.org/patch/10342/

[2] This part of the patch was inititally proposed as a RFC by
Carlos O'Donnell.  Make sense to me integrate this on the patch:

https://sourceware.org/ml/libc-alpha/2017-05/msg00335.html

	* elf/dl-tunables.list: Add elision parameters.
	* manual/tunables.texi: Add entries about elision tunable.
	* sysdeps/unix/sysv/linux/powerpc/elision-conf.c:
	Add callback functions to dynamically enable/disable elision.
	Add multiple callbacks functions to set elision parameters.
	Deleted __libc_enable_secure check.
	* sysdeps/unix/sysv/linux/s390/elision-conf.c: Likewise.
	* sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise.
	* configure: Regenerated.
	* configure.ac: Option enable_lock_elision was deleted.
	* config.h.in: ENABLE_LOCK_ELISION flag was deleted.
	* config.make.in: Remove references to enable_lock_elision.
	* manual/install.texi: Elision configure option was removed.
	* INSTALL: Regenerated to remove enable_lock_elision.
	* nptl/Makefile:
	Disable elision so it can verify error case for destroying a mutex.
	* sysdeps/powerpc/nptl/elide.h:
	Cleanup ENABLE_LOCK_ELISION check.
	Deleted macros for the case when ENABLE_LOCK_ELISION was not defined.
	* sysdeps/s390/configure: Regenerated.
	* sysdeps/s390/configure.ac: Remove references to enable_lock_elision..
	* nptl/tst-mutex8.c:
	Deleted all #ifndef ENABLE_LOCK_ELISION from the test.
	* sysdeps/powerpc/powerpc32/sysdep.h:
	Deleted all ENABLE_LOCK_ELISION checks.
	* sysdeps/powerpc/powerpc64/sysdep.h: Likewise.
	* sysdeps/powerpc/sysdep.h: Likewise.
	* sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/force-elision.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/elision-conf.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/force-elision.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/Makefile: Remove references to
	enable-lock-elision.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
 2017-12-05 17:48:48 -02:00
Florian Weimer 446d22e91d Linux: Implement interfaces for memory protection keys 
This adds system call wrappers for pkey_alloc, pkey_free, pkey_mprotect,
and x86-64 implementations of pkey_get and pkey_set, which abstract over
the PKRU CPU register and hide the actual number of memory protection
keys supported by the CPU.  pkey_mprotect with a -1 key is implemented
using mprotect, so it will work even if the kernel does not support the
pkey_mprotect system call.

The system call wrapers use unsigned int instead of unsigned long for
parameters, so that no special treatment for x32 is needed.  The flags
argument is currently unused, and the access rights bit mask is limited
to two bits by the current PKRU register layout anyway.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-05 15:20:35 +01:00
Juro Bystricky 1faaf7035c plural.c: improve reproducibility 
There is a subtle non-determinism when building glibc.
This depends on whether the glibc is built using the distibuted
file intl/plural.c or built using the generated file intl/plural.c.
These two files (intl/plural.c generated vs. distributed) are slightly
different, hence we may end up with slightly different libraries.

Originally, having "bison" installed was optional. So if "bison" was
not present, we always built libraries with the distributed plural.c.
If bison was installed, we *** may have *** replaced the distributed
file plural.c with a new plural.c generated from plural.y. if the
timestamps triggered this rule:

plural.c plural.y
	$(BISON) $(BISONFLAGS) $@ $^

Given that timestamps are not preserved in GIT repositories, the above
rule is not reliable without explicitly touching plural.c or plural.y.
In other words, the rule may or may not have fired.

In summary: there are two distinct sources of non-determinism:

1. Having "bison" installed or not
2. Having "bison" installed but timestamps poorly defined.

This patch fixes this by requiring "bison" being installed
and by always generating intl/plural.c from intl/plural.y.
(This is achieved by simply removing checked-in intl/plural.c)

	[BZ #22432]
	* configure.ac (BISON): Require to be present.
	* configure: Regenerated.
	* intl/Makefile (generated): Add plural.c.
	[$(BISON) != no]: Make code unconditional.
	(plural.c): Change rule to $(objpfx)plural.c.
	($(objpfx)plural.o): Depend on $(objpfx)plural.c.
	* intl/plural.c: Remove.
	* manual/install.texi (Tools for Compilation): Document bison as
	required.
	* INSTALL: Regenerated.
 2017-11-30 21:21:15 +00:00
Florian Weimer 4bab02240e Implement the mlock2 function 
Fallback using mlock is provided if the flags argument is zero.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-11-27 17:14:29 +01:00
Joseph Myers a23aa5b727 Add _Float64x function aliases. 
This patch continues filling out TS 18661-3 support by adding *f64x
function aliases on platforms with _Float64x support.  (It so happens
the set of such platforms is exactly the same as the set of platforms
with _Float128 support, although on x86_64, x86 and ia32 the _Float64x
format is Intel extended rather than binary128.)  The API provided
corresponds exactly to that provided for _Float128, mostly coming from
TS 18661-3.  As these functions always alias those for another type
(long double, _Float128 or both), __* function names are not provided,
as in other cases of alias types.

Given the preparation done in previous patches, this one just enables
the feature via Makeconfig and bits/floatn.h, adds symbol versions,
and updates documentation and ABI baselines.  The symbol versions are
present unconditionally as GLIBC_2.27 in the relevant Versions files,
as it's OK for those to specify versions for functions that may not be
present in some configurations; no additional complexity is needed
unless in future some configuration gains support for this type that
didn't have such support in 2.27.  The Makeconfig additions for ia64
and x86 aren't strictly needed, as those configurations also get
float64x-alias-fcts definitions from
sysdeps/ieee754/float128/Makeconfig, but still seem appropriate given
that _Float64x is not _Float128 for those configurations.

A libm-test-ulps update for x86 is included.  This is because
bits/mathinline.h does not have _Float64x support added and for two
functions the use of out-of-line functions results in increased ulps
(ifloat64x shares ulps with ildouble / ifloat128 as appropriate).
Given that we'd like generally to eliminate bits/mathinline.h
optimizations, preferring to have such optimizations in GCC instead,
it seems reasonable not to add such support there for new types.  GCC
support for _FloatN / _FloatNx built-in functions is limited, but has
been improved in GCC 8, and at some point I hope the full set of libm
built-in functions in GCC, and other optimizations with
per-floating-type aspects, will be enabled for all _FloatN / _FloatNx
types.

Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.

	* sysdeps/ia64/Makeconfig (float64x-alias-fcts): New variable.
	* sysdeps/ieee754/float128/Makeconfig (float64x-alias-fcts):
	Likewise.
	* sysdeps/ieee754/ldbl-128/Makeconfig (float64x-alias-fcts):
	Likewise.
	* sysdeps/x86/Makeconfig: New file.
	* bits/floatn-common.h (__HAVE_FLOAT64X): Remove macro.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* bits/floatn.h (__HAVE_FLOAT64X): New macro.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* sysdeps/ia64/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* sysdeps/ieee754/ldbl-128/bits/floatn.h (__HAVE_FLOAT64X):
	Likewise.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* sysdeps/mips/ieee754/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* sysdeps/powerpc/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* sysdeps/x86/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
	(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
	* manual/math.texi (Mathematics): Document support for _Float64x.
	* math/Versions (GLIBC_2.27): Add _Float64x functions.
	* stdlib/Versions (GLIBC_2.27): Likewise.
	* wcsmbs/Versions (GLIBC_2.27): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
 2017-11-27 14:16:47 +00:00
Florian Weimer 59d2cbb1fe Linux: Add memfd_create system call wrapper 
The system call is somewhat obscure because it is closely related
to file descriptor sealing.  However, it is also the recommended
way to create alias mappings, which is why it has more general use.

No emulation is provided.  Except for the name of the
/proc/self/fd links, it would be possible to implement an
approximation using O_TMPFILE and tmpfs, but this does not appear
to be worth the added complexity.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-11-23 10:00:40 +01:00
Florian Weimer a465b89ee8 manual: Document the MAP_HUGETLB, MADV_HUGEPAGE, MADV_NOHUGEPAGE flags 2017-11-20 13:23:17 +01:00
Florian Weimer 0f74bbf513 manual: Document mprotect and introduce section on memory protection 2017-11-19 11:27:59 +01:00
Florian Weimer f6e965ee94 manual: Move preadv/writev variants to Scatter-Gather section 
Also remove a comment about performance.  fwrite vs writev performance
is a very complex topic and cannot be reduced to a simple advice based
on transfer size.
 2017-11-19 08:58:31 +01:00
Siddhesh Poyarekar a306c790a8 Prefer https for Sourceware links 
Update all sourceware links to https.  The website redirects
everything to https anyway so let the web server do a bit less work.
The only reference that remains unchanged is the one in the old
ChangeLog, since it didn't seem worth changing it.

	* NEWS: Update sourceware link to https.
	* configure.ac: Likewise.
	* crypt/md5test-giant.c: Likewise.
	* dlfcn/bug-atexit1.c: Likewise.
	* dlfcn/bug-atexit2.c: Likewise.
	* localedata/README: Likewise.
	* malloc/tst-mallocfork.c: Likewise.
	* manual/install.texi: Likewise.
	* nptl/tst-pthread-getattr.c: Likewise.
	* stdio-common/tst-fgets.c: Likewise.
	* stdio-common/tst-fwrite.c: Likewise.
	* sunrpc/Makefile: Likewise.
	* sysdeps/arm/armv7/multiarch/memcpy_impl.S: Likewise.
	* wcsmbs/tst-mbrtowc2.c: Likewise.
	* configure: Regenerate.
	* INSTALL: Regenerate.
 2017-11-16 11:49:26 +05:30
Luke Shumaker 495a56fdeb
manual: Update to mention ENODEV for ttyname and ttyname_r 
Commit 15e9a4f378 introduced ENODEV as a possible
error condition for ttyname and ttyname_r. Update the manual to mention this GNU
extension.

Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-11-15 20:46:45 +01:00
Florian Weimer b9af29c020 manual: Document the O_TMPFILE flag 
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
 2017-11-04 00:57:42 +01:00
Florian Weimer bc18a6d362 manual: Document the linkat function 
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
 2017-11-04 00:28:37 +01:00
Siddhesh Poyarekar a2e0a7f12b aarch64: Document _SC_LEVEL1_DCACHE_LINESIZE caveat 
The _SC_LEVEL1_DCACHE_LINESIZE is reported using the contents of the
ctr_el0 register, which tells us the minimum observable cache line
size by userspace.  This typically is the same as the L1 cache line
size, but that may not always be true.  It could be a higher level
cache line size as long as cache cleaning and invalidation work
correctly with that line size in userspace.  The falkor core for
example reports the L2 line size as the dcache line size in CTR_EL0
while also reporting the correct L1 dcache line size via CCSIDR_EL1.

	* manual/conf.texi (_SC_LEVEL1_DCACHE_LINESIZE,
	_SC_LEVEL1_ICACHE_LINESIZE): Document aarch64 caveat.

Reviewed-by: Rical Jasan <ricaljasan@pacific.net>
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
 2017-10-23 20:23:35 +05:30
Siddhesh Poyarekar db9bab09a5 Document cache information sysconf variables 
Write short descriptions for each of the cache information sysconf
variables.

	* manual/conf.texi (_SC_LEVEL1_ICACHE_SIZE,
	_SC_LEVEL1_ICACHE_ASSOC, _SC_LEVEL1_ICACHE_LINESIZE,
	_SC_LEVEL1_DCACHE_SIZE, _SC_LEVEL1_DCACHE_ASSOC,
	_SC_LEVEL1_DCACHE_LINESIZE, _SC_LEVEL2_CACHE_SIZE,
	_SC_LEVEL2_CACHE_ASSOC, _SC_LEVEL2_CACHE_LINESIZE,
	_SC_LEVEL3_CACHE_SIZE, _SC_LEVEL3_CACHE_ASSOC,
	_SC_LEVEL3_CACHE_LINESIZE, _SC_LEVEL4_CACHE_SIZE,
	_SC_LEVEL4_CACHE_ASSOC, _SC_LEVEL4_CACHE_LINESIZE): New
	variables.

Reviewed-by: Rical Jasan <ricaljasan@pacific.net>
 2017-10-23 20:23:13 +05:30
Joseph Myers 81325b12b1 Add _Float128 function aliases. 
This patch adds support for *f128 function aliases on platforms where
long double has the binary128 format (and thus GCC 7 provides the
_Float128 type with the same ABI as long double but as a distinct type
in terms of C type compatibility).  This is the same API as provided
in glibc 2.26 for powerpc64le / x86_64 / x86 / ia64 where _Float128
has a different format from long double, with the bulk of the API
coming from TS 18661-3.  All the functions alias the corresponding
long double functions, and __* function names are not provided since
those are only needed once for each floating-point format, not more
than once for different types with the same format (so for example,
-ffinite-math-only maps foof128 to __fool_finite, while type-generic
macros end up calling e.g. __issignalingl for _Float128 arguments on
such platforms).

The preparation for this feature was done in previous patches, so this
one just needs to add the relevant makefile and header definitions,
and update macro definitions of libm_alias_ldouble_other_r, to turn on
the feature, and update documentation and ABI baselines.

Tested (a) for x86_64, (b) for aarch64, (c) with build-many-glibcs.py
with both GCC 6 and GCC 7.

	* sysdeps/ieee754/ldbl-128/Makeconfig: New file.
	* sysdeps/ieee754/ldbl-128/bits/floatn.h: Likewise.
	* sysdeps/ieee754/ldbl-128/float128-abi.h: Likewise.
	* sysdeps/generic/libm-alias-ldouble.h: Include <bits/floatn.h>.
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128]
	(libm_alias_ldouble_other_r): Also create _Float128 alias.
	* sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h: Include
	<bits/floatn.h>.
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128]
	(libm_alias_ldouble_other_r): Also create _Float128 alias.
	* manual/math.texi (Mathematics): Document additional architecture
	support for _Float128.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
 2017-10-18 17:37:18 +00:00
Joseph Myers 644d38570a Remove add-ons mechanism. 
glibc has an add-ons mechanism to allow additional software to be
integrated into the glibc build.  Such add-ons may be within the glibc
source tree, or outside it at a path passed to the --enable-add-ons
configure option.

localedata and crypt were once add-ons, distributed in separate
release tarballs, but long since stopped using that mechanism.
Linuxthreads was always an add-on.  Ports spent some time as an add-on
with separate release tarballs, then was first moved into the glibc
source tree, then had its sysdeps files moved into the main sysdeps
hierarchy so the add-ons mechanism was no longer used.  NPTL spent
some time as an add-on in the main glibc tree before stopping using
the add-on mechanism.  libidn used to have separate release tarballs
but no longer does so, but still uses the add-ons mechanism within the
glibc source tree.  Various other software has supported building with
the add-ons mechanism at times in the past, but I don't think any is
still widely used.

Add-ons involve significant, little-used complexity in the glibc build
system, and make it hard to understand what the space of possible
glibc configurations is.  This patch removes the add-ons mechanism.
libidn is now built via the Subdirs mechanism to cause any
configuration using sysdeps/unix/inet to build libidn; HAVE_LIBIDN
(which effectively means shared libraries are available) is now
defined via sysdeps/unix/inet/configure.  Various references to
add-ons around the source tree are removed (in the case of maint.texi,
the example list of sysdeps directories is still very out of date).

Externally maintained ports should now put their files in the normal
sysdeps directory structure rather than being arranged as add-ons;
they probably need to change e.g. elf.h anyway, rather than actually
being able to work just as a drop-in subtree.  Hurd libpthread should
be arranged similarly to NPTL, so some files might go in a
hurd-pthreads (or similar) top-level directory in glibc, while sysdeps
files should go in the normal sysdeps directory structure (possibly in
hurd or hurd-pthreads subdirectories, just as there are nptl
subdirectories in the sysdeps tree).

Tested for x86_64, and with build-many-glibcs.py.

	* configure.ac (--enable-add-ons): Remove option.
	(machine): Do not mention add-ons in comment.
	(LIBC_PRECONFIGURE): Likewise.
	(add_ons): Remove variable and sanity checks and logic to locate
	add-ons.
	(add_ons_automatic): Remove variable.
	(configured_add_ons): Likewise.
	(add_ons_sfx): Likewise.
	(add_ons_pfx): Likewise.
	(add_on_subdirs): Likewise.
	(sysnames_add_ons): Likewise.  Remove loop over add-ons and
	consideration of add-ons in Implies handling.
	(sysdeps_add_ons): Likewise.
	* configure: Regenerated.
	* libidn/configure.ac: Remove.
	* libidn/configure: Likewise.
	* sysdeps/unix/inet/configure.ac: New file.
	* sysdeps/unix/inet/configure: New generated file.
	* sysdeps/unix/inet/Subdirs: Add libidn.
	* Makeconfig (sysdeps-srcdirs): Remove variable.
	(+sysdep_dirs): Do not include $(sysdeps-srcdirs).
	($(common-objpfx)config.status): Do not depend on add-on files.
	($(common-objpfx)shlib-versions.v.i): Do not mention add-ons in
	comment.
	(all-subdirs): Do not include $(add-on-subdirs).
	* Makefile (dist-prepare): Do not use $(sysdeps-add-ons).
	* config.make.in (add-ons): Remove variable.
	(add-on-subdirs): Likewise.
	(sysdeps-add-ons): Likewise.
	* manual/Makefile (add-chapters): Remove.
	($(objpfx)texis): Do not depend on $(add-chapters).
	(nonexamples): Do not handle $(add-chapters).
	(examples): Do not handle $(add-ons).
	(chapters.% top-menu.%): Do not pass '$(add-chapters)' to
	libc-texinfo.sh.
	* manual/install.texi (Installation): Do not mention add-ons.
	(--enable-add-ons): Do not document configure option.
	* INSTALL: Regenerated.
	* manual/libc-texinfo.sh: Do not handle $2 add-ons argument.
	* manual/maint.texi (Hierarchy Conventions): Do not mention
	add-ons.
	* scripts/build-many-glibcs.py (Glibc.build_glibc): Do not use
	--enable-add-ons.
	* scripts/gen-sorted.awk: Do not handle Subdirs files from
	add-ons.
	* scripts/test-installation.pl: Do not handle glibc-compat add-on.
	* sysdeps/nptl/Makeconfig: Do not mention add-ons in comment.
 2017-10-05 15:58:13 +00:00
Joseph Myers 2394784665 Remove Banner mechanism. 
This patch removes the Banner mechanism, with the last remaining
Banner file replaced by a contrib.texi entry.  This accords with the
principle that the output of running libc.so.6 is not the place to
credit particular contributions (the manual is), and with all other
configuration options not mentioned there, it doesn't seem appropriate
to focus there on the one question of whether the one remaining piece
configured as an add-on was enabled or not.

Tested for x86_64.

	* csu/Makefile (generated): Do not add version-info.h.
	(before-compile): Likewise.
	(all-Banner-files): Remove variable.
	($(objpfx)version-info.h): Remove rule.
	* csu/version.c (banner): Do not include "version-info.h".
	* libidn/Banner: Remove.
	* manual/contrib.texi (Simon Josefsson): New entry.
 2017-09-22 17:43:42 +00:00
Joseph Myers c10c5267a8 Remove non-add-on Banner files. 
Various subdirectories of glibc include Banner files to put some text
in the output of executing libc.so.6, under "Available extensions".

Some of those subdirectories (e.g. crypt) may originally have been
add-ons (and so optional, so a particular glibc build might or might
not have included them), but except for libidn they aren't now (or if
only included in some builds, in the case of soft-fp, the inclusion
depends on the architecture for which glibc is configured rather than
having any glibc configuration for which it's an optional feature),
and it doesn't seem useful for the libc.so.6 output to call out a few
features like that.

This patch removes the non-add-on Banner files, updating contrib.texi
where they noted contributions not otherwise mentioned there.

Tested for x86_64.

	* crypt/Banner: Remove file.
	* nptl/Banner: Likewise.
	* resolv/Banner: Likewise.
	* soft-fp/Banner: Likewise.
	* nptl/Makefile ($(objpfx)banner.h): Remove rule.
	($(objpfx)version.d): Remove dependency on banner.h.
	($(objpfx)version.os): Likewise.
	* nptl/version.c (banner): Do not include banner.h.
	* manual/contrib.texi: Update entries for Richard Henderson, Jakub
	Jelinek and BIND code.
 2017-09-21 17:49:51 +00:00
Steve Ellcey a1a7820416 Remove compat from DEFAULT_CONFIG lookup strings 
* grp/initgroups.c: Include config.h.
	(DEFAULT_CONFIG): New macro.
	(internal_getgrouplist): Use DEFAULT_CONFIG.
	* nscd/initgrcache.c (addinitgroupsX): Likewise.
	* nss/nsswitch.c (__nss_disable_nscd): Likewise.
	(DEFAULT_DEFCONFIG): New macro.
	(__nss_database_lookup): Use DEFAULT_DEFCONFIG.
	* nss/grp-lookup.c: Include config.h
	(DEFAULT_CONFIG): Set definition based on LINK_OBSOLETE_NSL.
	* nss/pwd-lookup.c (DEFAULT_CONFIG): Likewise.
	* nss/spwd-lookup.c (DEFAULT_CONFIG): Likewise.
	* manual/nss.texi: Update default values section.
 2017-09-12 10:21:48 -07:00
Steve Ellcey 9c9ec58197 Add thunderx2t99 and thunderx2t99p1 CPU names to tunables list 
* manual/tunables.texi (glibc.tune.cpu): Add thunderx2t99 and
	thunderx2t99p1 to list of cpu names.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
	Add thunderx2t99 and thunderx2t99p1 entries to cpu_list.
 2017-09-08 11:02:09 -07:00
Joseph Myers 5a80d39d0d Obsolete pow10 functions. 
This patch obsoletes the pow10, pow10f and pow10l functions (makes
them into compat symbols, not available for new ports or static
linking).  The exp10 names for these functions are standardized (in TS
18661-4) and were added in the same glibc version (2.1) as pow10 so
source code can change to use them without any loss of portability.
Since pow10 is deliberately not provided for _Float128, only exp10,
this slightly simplifies moving to the new wrapper templates in the
!LIBM_SVID_COMPAT case, by avoiding needing to arrange for pow10,
pow10f and pow10l to be defined by those templates.

Tested for x86_64, and with build-many-glibcs.py.

	* manual/math.texi (pow10): Do not document.
	(pow10f): Likewise.
	(pow10l): Likewise.
	* math/bits/mathcalls.h [__USE_GNU] (pow10): Do not declare.
	* math/bits/math-finite.h [__USE_GNU] (pow10): Likewise.
	* math/libm-test-exp10.inc (pow10_test): Remove.
	(do_test): Do not call pow10.
	* math/w_exp10_compat.c (pow10): Make into compat symbol.
	[NO_LONG_DOUBLE] (pow10l): Likewise.
	* math/w_exp10f_compat.c (pow10f): Likewise.
	* math/w_exp10l_compat.c (pow10l): Likewise.
	* sysdeps/ia64/fpu/e_exp10.S: Include <shlib-compat.h>.
	(pow10): Make into compat symbol.
	* sysdeps/ia64/fpu/e_exp10f.S: Include <shlib-compat.h>.
	(pow10f): Make into compat symbol.
	* sysdeps/ia64/fpu/e_exp10l.S: Include <shlib-compat.h>.
	(pow10l): Make into compat symbol.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Remove
	pow10.
	(CFLAGS-nldbl-pow10.c): Remove variable..
	* sysdeps/ieee754/ldbl-opt/nldbl-pow10.c: Remove file.
	* sysdeps/ieee754/ldbl-opt/w_exp10_compat.c (pow10l): Condition on
	[SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)].
	* sysdeps/ieee754/ldbl-opt/w_exp10l_compat.c (compat_symbol):
	Undefine and redefine.
	(pow10l): Make into compat symbol.
	* sysdeps/aarch64/libm-test-ulps: Remove pow10 ulps.
	* sysdeps/alpha/fpu/libm-test-ulps: Likewise.
	* sysdeps/arm/libm-test-ulps: Likewise.
	* sysdeps/hppa/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
	* sysdeps/microblaze/libm-test-ulps: Likewise.
	* sysdeps/mips/mips32/libm-test-ulps: Likewise.
	* sysdeps/mips/mips64/libm-test-ulps: Likewise.
	* sysdeps/nios2/libm-test-ulps: Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Likewise.
	* sysdeps/powerpc/nofpu/libm-test-ulps: Likewise.
	* sysdeps/s390/fpu/libm-test-ulps: Likewise.
	* sysdeps/sh/libm-test-ulps: Likewise.
	* sysdeps/sparc/fpu/libm-test-ulps: Likewise.
	* sysdeps/tile/libm-test-ulps: Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
 2017-09-01 21:13:18 +00:00
H.J. Lu 136fa185fd Credit Ulrich Drepper for libpthread in contrib.texi 
* manual/contrib.texi: Credit Ulrich Drepper for the POSIX
	Threads Library.
 2017-09-01 10:19:07 -07:00
Zack Weinberg da162bf234 Remove obsolete notes at top level of source tree. 
* BUGS, CONFORMANCE, NAMESPACE, WUR-REPORT: Deleted.
 * README.pretty-printers, README.tunables: Move to manual/.
 2017-09-01 08:04:22 -04:00
Florian Weimer ac3ed168d0 malloc: Remove check_action variable [BZ #21754] 
Clean up calls to malloc_printerr and trim its argument list.

This also removes a few bits of work done before calling
malloc_printerr (such as unlocking operations).

The tunable/environment variable still enables the lightweight
additional malloc checking, but mallopt (M_CHECK_ACTION)
no longer has any effect.
 2017-08-30 20:08:34 +02:00
Florian Weimer ec2c1fcefb malloc: Abort on heap corruption, without a backtrace [BZ #21754] 
The stack trace printing caused deadlocks and has been itself been
targeted by code execution exploits.
 2017-08-30 16:39:41 +02:00
Joseph Myers 813378e9fe Obsolete matherr, _LIB_VERSION, libieee.a. 
This patch obsoletes support for SVID libm error handling (the system
where a user-defined function matherr is called on a libm function
error; only enabled if you also set _LIB_VERSION = _SVID_ or
_LIB_VERSION = _XOPEN_) and the use of the _LIB_VERSION global
variable to control libm error handling.  matherr and _LIB_VERSION are
made into compat symbols, not supported for new ports or for static
linking.  The libieee.a object file (which sets _LIB_VERSION = _IEEE_,
so disabling errno setting for some functions) is also removed, and
all the related definitions are removed from math.h.

The manual already recommends against using matherr, and it's already
not supported for _Float128 functions (those use new wrappers that
don't support matherr, only errno) - this patch means that it becomes
possible to e.g. add sinf32 as an alias to sinf without that resulting
in undesired matherr support in sinf32 for existing glibc ports.
matherr support is not part of any standard supported by glibc (it was
removed in XPG4).

Because matherr is a function to be defined by the user, of course
user programs defining such a function will still continue to link; it
just quietly won't be used.  If they try to write to the library's
copy of _LIB_VERSION to enable SVID error handling, however, they will
get a link error (but if they define their own _LIB_VERSION variable,
they won't).

I expect the most likely case of build failures from this patch to be
programs with unconditional cargo-culted uses of -lieee (based on a
notion of "I want IEEE floating point", not any actual requirement for
that library).

Ideally, the new-port-or-static-linking case would use the new
wrappers used for _Float128.  This is not implemented in this patch,
because of the complication of architecture-specific (powerpc32 and
sparc) sqrt wrappers that use _LIB_VERSION and __kernel_standard
directly.  Thus, the old wrappers and __kernel_standard are still
built unconditionally, and _LIB_VERSION still exists in static libm.
But when the old wrappers and __kernel_standard are built in the
non-compat case, _LIB_VERSION and matherr are defined as macros so
code to support those features isn't actually built into static libm
or new ports' shared libm after this patch.

I intend to move to the new wrappers for static libm and new ports in
followup patches.  I believe the sqrt wrappers for powerpc32 and sparc
can reasonably be removed.  GCC already optimizes the normal case of
sqrt by generating code that uses a hardware instruction and only
calls the sqrt function if the argument was negative (if
-fno-math-errno, of course, it just uses the hardware instruction
without any check for negative argument being needed).  Thus those
wrappers will only actually get called in the case of negative
arguments, which is not a case it makes sense to optimize for.  But
even without removing the powerpc32 and sparc wrappers it should still
be possible to move to the new wrappers for static libm and new ports,
just without having those dubious architecture-specific optimizations
in static libm.

Everything said about matherr equally applies to matherrf and matherrl
(IA64-specific, undocumented), except that the structure of IA64 libm
means it won't be converted to using the new wrappers (it doesn't use
the old ones either, but its own error-handling code instead).

As with other tests of compat symbols, I expect test-matherr and
test-matherr-2 to need to become appropriately conditional once we
have a system for disabling such tests for ports too new to have the
relevant symbols.

Tested for x86_64 and x86, and with build-many-glibcs.py.

	* math/math.h [__USE_MISC] (_LIB_VERSION_TYPE): Remove.
	[__USE_MISC] (_LIB_VERSION): Likewise.
	[__USE_MISC] (struct exception): Likewise.
	[__USE_MISC] (matherr): Likewise.
	[__USE_MISC] (DOMAIN): Likewise.
	[__USE_MISC] (SING): Likewise.
	[__USE_MISC] (OVERFLOW): Likewise.
	[__USE_MISC] (UNDERFLOW): Likewise.
	[__USE_MISC] (TLOSS): Likewise.
	[__USE_MISC] (PLOSS): Likewise.
	[__USE_MISC] (HUGE): Likewise.
	[__USE_XOPEN] (MAXFLOAT): Define even if [__USE_MISC].
	* math/math-svid-compat.h: New file.
	* conform/linknamespace.pl (@whitelist): Remove matherr, matherrf
	and matherrl.
	* include/math.h [!_ISOMAC] (__matherr): Remove.
	* manual/arith.texi (FP Exceptions): Do not document matherr.
	* math/Makefile (tests): Change test-matherr to test-matherr-3.
	(tests-internal): New variable.
	(install-lib): Do not add libieee.a.
	(non-lib.a): Likewise.
	(extra-objs): Do not add libieee.a and ieee-math.o.
	(CPPFLAGS-s_lib_version.c): Remove variable.
	($(objpfx)libieee.a): Remove rule.
	($(addprefix $(objpfx), $(tests-internal)): Depend on $(libm).
	* math/ieee-math.c: Remove.
	* math/libm-test-support.c (matherr): Remove.
	* math/test-matherr.c: Use <support/test-driver.c>.  Add copyright
	and license notices.  Include <math-svid-compat.h> and
	<shlib-compat.h>.
	(matherr): Undefine as macro.  Use compat_symbol_reference.
	(_LIB_VERSION): Likewise.
	* math/test-matherr-2.c: New file.
	* math/test-matherr-3.c: Likewise.
	* sysdeps/generic/math_private.h (__kernel_standard): Remove
	declaration.
	(__kernel_standard_f): Likewise.
	(__kernel_standard_l): Likewise.
	* sysdeps/ieee754/s_lib_version.c: Do not include <math.h> or
	<math_private.h>.  Include <math-svid-compat.h>.
	(_LIB_VERSION): Undefine as macro.
	(_LIB_VERSION_INTERNAL): Always initialize to _POSIX_.  Define
	only if [LIBM_SVID_COMPAT || !defined SHARED].  If
	[LIBM_SVID_COMPAT], use compat_symbol.
	* sysdeps/ieee754/s_matherr.c: Do not include <math.h> or
	<math_private.h>.  Include <math-svid-compat.h>.
	(matherr): Undefine as macro.
	(__matherr): Define only if [LIBM_SVID_COMPAT].  Use
	compat_symbol.
	* sysdeps/ia64/fpu/libm_error.c: Include <math-svid-compat.h>.
	[_LIBC && LIBM_SVID_COMPAT] (matherrf): Use
	compat_symbol_reference.
	[_LIBC && LIBM_SVID_COMPAT] (matherrl): Likewise.
	[_LIBC && !LIBM_SVID_COMPAT] (matherrf): Define as macro.
	[_LIBC && !LIBM_SVID_COMPAT] (matherrl): Likewise.
	* sysdeps/ia64/fpu/libm_support.h: Include <math-svid-compat.h>.
	(MATHERR_D): Remove declaration.
	[!_LIBC] (_LIB_VERSION_TYPE): Likewise
	[!LIBM_BUILD] (_LIB_VERSIONIMF): Likewise.
	[LIBM_BUILD] (pmatherrf): Likewise.
	[LIBM_BUILD] (pmatherr): Likewise.
	[LIBM_BUILD] (pmatherrl): Likewise.
	(DOMAIN): Likewise.
	(SING): Likewise.
	(OVERFLOW): Likewise.
	(UNDERFLOW): Likewise.
	(TLOSS): Likewise.
	(PLOSS): Likewise.
	* sysdeps/ia64/fpu/s_matherrf.c: Include <math-svid-compat.h>.
	(__matherrf): Define only if [LIBM_SVID_COMPAT].  Use
	compat_symbol.
	* sysdeps/ia64/fpu/s_matherrl.c: Include <math-svid-compat.h>.
	(__matherrl): Define only if [LIBM_SVID_COMPAT].  Use
	compat_symbol.
	* math/lgamma-compat.h: Include <math-svid-compat.h>.
	* math/w_acos_compat.c: Likewise.
	* math/w_acosf_compat.c: Likewise.
	* math/w_acosh_compat.c: Likewise.
	* math/w_acoshf_compat.c: Likewise.
	* math/w_acoshl_compat.c: Likewise.
	* math/w_acosl_compat.c: Likewise.
	* math/w_asin_compat.c: Likewise.
	* math/w_asinf_compat.c: Likewise.
	* math/w_asinl_compat.c: Likewise.
	* math/w_atan2_compat.c: Likewise.
	* math/w_atan2f_compat.c: Likewise.
	* math/w_atan2l_compat.c: Likewise.
	* math/w_atanh_compat.c: Likewise.
	* math/w_atanhf_compat.c: Likewise.
	* math/w_atanhl_compat.c: Likewise.
	* math/w_cosh_compat.c: Likewise.
	* math/w_coshf_compat.c: Likewise.
	* math/w_coshl_compat.c: Likewise.
	* math/w_exp10_compat.c: Likewise.
	* math/w_exp10f_compat.c: Likewise.
	* math/w_exp10l_compat.c: Likewise.
	* math/w_exp2_compat.c: Likewise.
	* math/w_exp2f_compat.c: Likewise.
	* math/w_exp2l_compat.c: Likewise.
	* math/w_fmod_compat.c: Likewise.
	* math/w_fmodf_compat.c: Likewise.
	* math/w_fmodl_compat.c: Likewise.
	* math/w_hypot_compat.c: Likewise.
	* math/w_hypotf_compat.c: Likewise.
	* math/w_hypotl_compat.c: Likewise.
	* math/w_j0_compat.c: Likewise.
	* math/w_j0f_compat.c: Likewise.
	* math/w_j0l_compat.c: Likewise.
	* math/w_j1_compat.c: Likewise.
	* math/w_j1f_compat.c: Likewise.
	* math/w_j1l_compat.c: Likewise.
	* math/w_jn_compat.c: Likewise.
	* math/w_jnf_compat.c: Likewise.
	* math/w_jnl_compat.c: Likewise.
	* math/w_lgamma_main.c: Likewise.
	* math/w_lgamma_r_compat.c: Likewise.
	* math/w_lgammaf_main.c: Likewise.
	* math/w_lgammaf_r_compat.c: Likewise.
	* math/w_lgammal_main.c: Likewise.
	* math/w_lgammal_r_compat.c: Likewise.
	* math/w_log10_compat.c: Likewise.
	* math/w_log10f_compat.c: Likewise.
	* math/w_log10l_compat.c: Likewise.
	* math/w_log2_compat.c: Likewise.
	* math/w_log2f_compat.c: Likewise.
	* math/w_log2l_compat.c: Likewise.
	* math/w_log_compat.c: Likewise.
	* math/w_logf_compat.c: Likewise.
	* math/w_logl_compat.c: Likewise.
	* math/w_pow_compat.c: Likewise.
	* math/w_powf_compat.c: Likewise.
	* math/w_powl_compat.c: Likewise.
	* math/w_remainder_compat.c: Likewise.
	* math/w_remainderf_compat.c: Likewise.
	* math/w_remainderl_compat.c: Likewise.
	* math/w_scalb_compat.c: Likewise.
	* math/w_scalbf_compat.c: Likewise.
	* math/w_scalbl_compat.c: Likewise.
	* math/w_sinh_compat.c: Likewise.
	* math/w_sinhf_compat.c: Likewise.
	* math/w_sinhl_compat.c: Likewise.
	* math/w_sqrt_compat.c: Likewise.
	* math/w_sqrtf_compat.c: Likewise.
	* math/w_sqrtl_compat.c: Likewise.
	* math/w_tgamma_compat.c: Likewise.
	* math/w_tgammaf_compat.c: Likewise.
	* math/w_tgammal_compat.c: Likewise.
	* sysdeps/ieee754/dbl-64/w_exp_compat.c: Likewise.
	* sysdeps/ieee754/flt-32/w_expf_compat.c: Likewise.
	* sysdeps/ieee754/k_standard.c: Likewise.
	* sysdeps/ieee754/k_standardf.c: Likewise.
	* sysdeps/ieee754/k_standardl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/w_expl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/w_expl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-96/w_expl_compat.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S: Likewise.
 2017-08-21 17:45:10 +00:00
Rical Jasan 925733a913 manual: Rewrite the section on widths of integer types. 
The manual contradicted itself by saying the number of bits in an
integer type needed to be computed, and then listing a number of
macros that later standards provided for exactly that.  The entire
section has been reworked to provide those macros first, while
preserving the documentation of CHAR_BIT and the associated examples
within that context.

	* manual/lang.texi
	(Computing the Width of an Integer Data Type): Rename section
	to "Width of an Integer Type".  Remove inaccurate statement
	regarding lack of C language facilities for determining width
	of integer types, and reorder content to improve flow and
	context of discussion.
 2017-08-10 20:28:28 -07:00
Rical Jasan 4fcdfbfcf9 manual: Update @standards for [__]va_copy. 
The ISO version in which va_copy was introduced is made explicit, and
__va_copy is given @standards.  The description is updated to be more
clear about the origins of each macro, and the reader is informed
these macros are now provided by the compiler (information previously
embedded in a Texinfo @comment).

	* lang.texi (va_copy): Change standard from ISO to C99.
	(__va_copy): Add standard and header annotation.
	Update description for clarity of origins and current use.
 2017-08-10 19:58:30 -07:00
Siddhesh Poyarekar 36ada5f681 aarch64: Optimized memcpy for Qualcomm Falkor processor 
This is an optimized implementation of the memcpy routine that gives a
significant gain in performance for all sizes of copies on the
Qualcomm Falkor processor.  A detailed rationale of the implementation
is written in a comment in the patch.

This implementation improves time for copies up to 128 bytes by up to
15% and for larger copies by up to 35% in the glibc
microbenchmark. The memcpy-random benchmark sees improvements in all
sizes in the range of 13%-18%.

Here are the full numbers extracted from the glibc microbenchmark
using the commands:

../benchtests/scripts/compare_strings.py benchtests/bench-memcpy.out \
		../benchtests/scripts/benchout_strings.schema.json \
		-base=__memcpy_generic length align1 align2

../benchtests/scripts/compare_strings.py benchtests/bench-memcpy-large.out \
		../benchtests/scripts/benchout_strings.schema.json \
		-base=__memcpy_generic length align1 align2

../benchtests/scripts/compare_strings.py benchtests/bench-memcpy-random.out \
		../benchtests/scripts/benchout_strings.schema.json \
		-base=__memcpy_generic max-size

Function: memcpy
__memcpy_thunderx       __memcpy_falkor __memcpy_generic
Variant: default
================================================================================
length=1,align1=0,align2=0:     33.59 (-115.00%)        15.62 (0.00%)   15.62
length=1,align1=0,align2=0:     16.41 (-10.53%) 14.06 (5.26%)   14.84
length=1,align1=0,align2=0:     14.84 (0.00%)   14.84 (0.00%)   14.84
length=1,align1=0,align2=0:     15.62 (-5.26%)  14.06 (5.26%)   14.84
length=2,align1=0,align2=0:     15.62 (-5.26%)  14.06 (5.26%)   14.84
length=2,align1=1,align2=0:     15.62 (-5.26%)  14.06 (5.26%)   14.84
length=2,align1=0,align2=1:     14.84 (0.00%)   14.06 (5.26%)   14.84
length=2,align1=1,align2=1:     14.84 (-5.56%)  14.06 (0.00%)   14.06
length=4,align1=0,align2=0:     14.06 (0.00%)   14.06 (0.00%)   14.06
length=4,align1=2,align2=0:     14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=4,align1=0,align2=2:     14.06 (0.00%)   14.06 (0.00%)   14.06
length=4,align1=2,align2=2:     14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=8,align1=0,align2=0:     14.84 (-5.56%)  13.28 (5.56%)   14.06
length=8,align1=3,align2=0:     14.06 (0.00%)   13.28 (5.56%)   14.06
length=8,align1=0,align2=3:     13.28 (0.00%)   13.28 (0.00%)   13.28
length=8,align1=3,align2=3:     13.28 (-6.25%)  13.28 (-6.25%)  12.50
length=16,align1=0,align2=0:    13.28 (0.00%)   13.28 (0.00%)   13.28
length=16,align1=4,align2=0:    13.28 (0.00%)   12.50 (5.88%)   13.28
length=16,align1=0,align2=4:    13.28 (0.00%)   13.28 (0.00%)   13.28
length=16,align1=4,align2=4:    13.28 (-6.25%)  12.50 (0.00%)   12.50
length=32,align1=0,align2=0:    14.06 (0.00%)   12.50 (11.11%)  14.06
length=32,align1=5,align2=0:    13.28 (0.00%)   12.50 (5.88%)   13.28
length=32,align1=0,align2=5:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=32,align1=5,align2=5:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=64,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=64,align1=6,align2=0:    13.28 (0.00%)   13.28 (0.00%)   13.28
length=64,align1=0,align2=6:    14.06 (5.26%)   14.06 (5.26%)   14.84
length=64,align1=6,align2=6:    14.84 (-11.77%) 14.06 (-5.88%)  13.28
length=128,align1=0,align2=0:   17.19 (-4.76%)  14.84 (9.52%)   16.41
length=128,align1=7,align2=0:   16.41 (4.55%)   15.62 (9.09%)   17.19
length=128,align1=0,align2=7:   16.41 (0.00%)   14.06 (14.29%)  16.41
length=128,align1=7,align2=7:   16.41 (4.55%)   15.62 (9.09%)   17.19
length=256,align1=0,align2=0:   21.88 (-3.70%)  21.09 (0.00%)   21.09
length=256,align1=8,align2=0:   21.09 (-3.85%)  21.09 (-3.85%)  20.31
length=256,align1=0,align2=8:   20.31 (-4.00%)  20.31 (-4.00%)  19.53
length=256,align1=8,align2=8:   21.88 (-7.69%)  20.31 (0.00%)   20.31
length=512,align1=0,align2=0:   28.91 (-2.78%)  28.91 (-2.78%)  28.12
length=512,align1=9,align2=0:   30.47 (-2.63%)  30.47 (-2.63%)  29.69
length=512,align1=0,align2=9:   29.69 (0.00%)   29.69 (0.00%)   29.69
length=512,align1=9,align2=9:   28.12 (-2.86%)  28.12 (-2.86%)  27.34
length=1024,align1=0,align2=0:  44.53 (0.00%)   44.53 (0.00%)   44.53
length=1024,align1=10,align2=0:         50.00 (0.00%)   50.00 (0.00%)   50.00
length=1024,align1=0,align2=10:         49.22 (1.56%)   50.78 (-1.56%)  50.00
length=1024,align1=10,align2=10:        44.53 (-1.79%)  43.75 (0.00%)   43.75
length=2048,align1=0,align2=0:  77.34 (-1.02%)  76.56 (0.00%)   76.56
length=2048,align1=11,align2=0:         89.84 (0.00%)   89.84 (0.00%)   89.84
length=2048,align1=0,align2=11:         89.84 (0.00%)   89.84 (0.00%)   89.84
length=2048,align1=11,align2=11:        75.78 (0.00%)   75.78 (0.00%)   75.78
length=4096,align1=0,align2=0:  141.41 (-0.56%) 140.62 (0.00%)  140.62
length=4096,align1=12,align2=0:         171.09 (-0.46%) 170.31 (0.00%)  170.31
length=4096,align1=0,align2=12:         170.31 (0.00%)  170.31 (0.00%)  170.31
length=4096,align1=12,align2=12:        140.62 (0.00%)  140.62 (0.00%)  140.62
length=8192,align1=0,align2=0:  278.91 (-0.28%) 275.78 (0.84%)  278.12
length=8192,align1=13,align2=0:         338.28 (0.23%)  335.94 (0.92%)  339.06
length=8192,align1=0,align2=13:         338.28 (0.00%)  455.47 (-34.64%)        338.28
length=8192,align1=13,align2=13:        278.12 (-0.28%) 275.78 (0.56%)  277.34
length=16384,align1=0,align2=0:         535.94 (-0.15%) 531.25 (0.73%)  535.16
length=16384,align1=14,align2=0:        659.38 (0.12%)  659.38 (0.12%)  660.16
length=16384,align1=0,align2=14:        659.38 (0.00%)  657.03 (0.36%)  659.38
length=16384,align1=14,align2=14:       535.16 (0.44%)  532.81 (0.87%)  537.50
length=32768,align1=0,align2=0:         1260.94 (10.68%)        1121.88 (20.53%)        1411.72
length=32768,align1=15,align2=0:        1368.75 (10.02%)        1376.56 (9.50%) 1521.09
length=32768,align1=0,align2=15:        1333.59 (10.91%)        1373.44 (8.25%) 1496.88
length=32768,align1=15,align2=15:       1256.25 (13.96%)        1125.78 (22.90%)        1460.16
length=65536,align1=0,align2=0:         2853.91 (30.11%)        2589.06 (36.60%)        4083.59
length=65536,align1=16,align2=0:        2850.00 (30.14%)        2589.84 (36.52%)        4079.69
length=65536,align1=0,align2=16:        2853.12 (30.60%)        2589.84 (37.00%)        4110.94
length=65536,align1=16,align2=16:       2850.78 (30.07%)        2589.06 (36.49%)        4076.56
length=0,align1=0,align2=0:     15.62 (-5.26%)  16.41 (-10.53%) 14.84
length=0,align1=0,align2=0:     14.84 (-5.56%)  14.84 (-5.56%)  14.06
length=0,align1=0,align2=0:     14.84 (0.00%)   14.84 (0.00%)   14.84
length=0,align1=0,align2=0:     16.41 (-16.67%) 14.84 (-5.56%)  14.06
length=1,align1=0,align2=0:     15.62 (4.76%)   15.62 (4.76%)   16.41
length=1,align1=1,align2=0:     15.62 (0.00%)   14.84 (5.00%)   15.62
length=1,align1=0,align2=1:     14.84 (0.00%)   14.84 (0.00%)   14.84
length=1,align1=1,align2=1:     14.84 (0.00%)   14.06 (5.26%)   14.84
length=2,align1=0,align2=0:     14.84 (0.00%)   14.06 (5.26%)   14.84
length=2,align1=2,align2=0:     14.84 (0.00%)   14.06 (5.26%)   14.84
length=2,align1=0,align2=2:     14.84 (-5.56%)  14.06 (0.00%)   14.06
length=2,align1=2,align2=2:     14.84 (0.00%)   14.06 (5.26%)   14.84
length=3,align1=0,align2=0:     14.84 (0.00%)   14.84 (0.00%)   14.84
length=3,align1=3,align2=0:     14.84 (-5.56%)  14.06 (0.00%)   14.06
length=3,align1=0,align2=3:     15.62 (-11.11%) 14.06 (0.00%)   14.06
length=3,align1=3,align2=3:     14.84 (0.00%)   14.06 (5.26%)   14.84
length=4,align1=0,align2=0:     17.97 (-27.78%) 14.06 (0.00%)   14.06
length=4,align1=4,align2=0:     13.28 (5.56%)   14.06 (0.00%)   14.06
length=4,align1=0,align2=4:     14.06 (0.00%)   13.28 (5.56%)   14.06
length=4,align1=4,align2=4:     13.28 (5.56%)   13.28 (5.56%)   14.06
length=5,align1=0,align2=0:     13.28 (5.56%)   13.28 (5.56%)   14.06
length=5,align1=5,align2=0:     14.06 (0.00%)   14.06 (0.00%)   14.06
length=5,align1=0,align2=5:     14.06 (0.00%)   13.28 (5.56%)   14.06
length=5,align1=5,align2=5:     14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=6,align1=0,align2=0:     14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=6,align1=6,align2=0:     14.06 (0.00%)   14.06 (0.00%)   14.06
length=6,align1=0,align2=6:     14.06 (0.00%)   13.28 (5.56%)   14.06
length=6,align1=6,align2=6:     14.06 (0.00%)   13.28 (5.56%)   14.06
length=7,align1=0,align2=0:     14.84 (-11.77%) 14.06 (-5.88%)  13.28
length=7,align1=7,align2=0:     13.28 (0.00%)   14.06 (-5.88%)  13.28
length=7,align1=0,align2=7:     14.06 (0.00%)   14.06 (0.00%)   14.06
length=7,align1=7,align2=7:     14.06 (0.00%)   14.06 (0.00%)   14.06
length=8,align1=0,align2=0:     14.06 (-5.88%)  13.28 (0.00%)   13.28
length=8,align1=8,align2=0:     14.06 (0.00%)   13.28 (5.56%)   14.06
length=8,align1=0,align2=8:     13.28 (0.00%)   13.28 (0.00%)   13.28
length=8,align1=8,align2=8:     14.06 (-5.88%)  13.28 (0.00%)   13.28
length=9,align1=0,align2=0:     13.28 (0.00%)   13.28 (0.00%)   13.28
length=9,align1=9,align2=0:     13.28 (0.00%)   13.28 (0.00%)   13.28
length=9,align1=0,align2=9:     13.28 (0.00%)   14.06 (-5.88%)  13.28
length=9,align1=9,align2=9:     14.06 (-5.88%)  13.28 (0.00%)   13.28
length=10,align1=0,align2=0:    14.06 (0.00%)   13.28 (5.56%)   14.06
length=10,align1=10,align2=0:   14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=10,align1=0,align2=10:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=10,align1=10,align2=10:  14.06 (0.00%)   13.28 (5.56%)   14.06
length=11,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=11,align1=11,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=11,align1=0,align2=11:   13.28 (0.00%)   13.28 (0.00%)   13.28
length=11,align1=11,align2=11:  13.28 (0.00%)   13.28 (0.00%)   13.28
length=12,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=12,align1=12,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=12,align1=0,align2=12:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=12,align1=12,align2=12:  14.06 (0.00%)   13.28 (5.56%)   14.06
length=13,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=13,align1=13,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=13,align1=0,align2=13:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=13,align1=13,align2=13:  13.28 (0.00%)   13.28 (0.00%)   13.28
length=14,align1=0,align2=0:    13.28 (0.00%)   13.28 (0.00%)   13.28
length=14,align1=14,align2=0:   13.28 (5.56%)   13.28 (5.56%)   14.06
length=14,align1=0,align2=14:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=14,align1=14,align2=14:  14.06 (-5.88%)  13.28 (0.00%)   13.28
length=15,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=15,align1=15,align2=0:   14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=15,align1=0,align2=15:   13.28 (0.00%)   13.28 (0.00%)   13.28
length=15,align1=15,align2=15:  13.28 (0.00%)   14.06 (-5.88%)  13.28
length=16,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=16,align1=16,align2=0:   13.28 (5.56%)   14.06 (0.00%)   14.06
length=16,align1=0,align2=16:   14.84 (-11.77%) 13.28 (0.00%)   13.28
length=16,align1=16,align2=16:  13.28 (-6.25%)  12.50 (0.00%)   12.50
length=17,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=17,align1=17,align2=0:   14.84 (-11.77%) 12.50 (5.88%)   13.28
length=17,align1=0,align2=17:   14.84 (-5.56%)  12.50 (11.11%)  14.06
length=17,align1=17,align2=17:  14.84 (-11.77%) 12.50 (5.88%)   13.28
length=18,align1=0,align2=0:    14.06 (0.00%)   12.50 (11.11%)  14.06
length=18,align1=18,align2=0:   13.28 (5.56%)   12.50 (11.11%)  14.06
length=18,align1=0,align2=18:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=18,align1=18,align2=18:  14.06 (0.00%)   12.50 (11.11%)  14.06
length=19,align1=0,align2=0:    14.06 (-5.88%)  13.28 (0.00%)   13.28
length=19,align1=19,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=19,align1=0,align2=19:   14.84 (-5.56%)  12.50 (11.11%)  14.06
length=19,align1=19,align2=19:  14.06 (-5.88%)  12.50 (5.88%)   13.28
length=20,align1=0,align2=0:    14.84 (-11.77%) 12.50 (5.88%)   13.28
length=20,align1=20,align2=0:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=20,align1=0,align2=20:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=20,align1=20,align2=20:  14.06 (0.00%)   13.28 (5.56%)   14.06
length=21,align1=0,align2=0:    14.84 (-5.56%)  12.50 (11.11%)  14.06
length=21,align1=21,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=21,align1=0,align2=21:   14.84 (-11.77%) 12.50 (5.88%)   13.28
length=21,align1=21,align2=21:  13.28 (5.56%)   13.28 (5.56%)   14.06
length=22,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=22,align1=22,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=22,align1=0,align2=22:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=22,align1=22,align2=22:  14.06 (0.00%)   12.50 (11.11%)  14.06
length=23,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=23,align1=23,align2=0:   14.06 (-5.88%)  13.28 (0.00%)   13.28
length=23,align1=0,align2=23:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=23,align1=23,align2=23:  14.06 (-5.88%)  13.28 (0.00%)   13.28
length=24,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=24,align1=24,align2=0:   14.06 (0.00%)   13.28 (5.56%)   14.06
length=24,align1=0,align2=24:   14.84 (-11.77%) 12.50 (5.88%)   13.28
length=24,align1=24,align2=24:  14.06 (-5.88%)  13.28 (0.00%)   13.28
length=25,align1=0,align2=0:    14.06 (0.00%)   12.50 (11.11%)  14.06
length=25,align1=25,align2=0:   14.06 (0.00%)   13.28 (5.56%)   14.06
length=25,align1=0,align2=25:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=25,align1=25,align2=25:  13.28 (0.00%)   13.28 (0.00%)   13.28
length=26,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=26,align1=26,align2=0:   14.06 (0.00%)   13.28 (5.56%)   14.06
length=26,align1=0,align2=26:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=26,align1=26,align2=26:  14.06 (0.00%)   13.28 (5.56%)   14.06
length=27,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=27,align1=27,align2=0:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=27,align1=0,align2=27:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=27,align1=27,align2=27:  14.06 (0.00%)   12.50 (11.11%)  14.06
length=28,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=28,align1=28,align2=0:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=28,align1=0,align2=28:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=28,align1=28,align2=28:  14.84 (-11.77%) 13.28 (0.00%)   13.28
length=29,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=29,align1=29,align2=0:   13.28 (0.00%)   12.50 (5.88%)   13.28
length=29,align1=0,align2=29:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=29,align1=29,align2=29:  13.28 (5.56%)   12.50 (11.11%)  14.06
length=30,align1=0,align2=0:    14.06 (-5.88%)  12.50 (5.88%)   13.28
length=30,align1=30,align2=0:   13.28 (5.56%)   12.50 (11.11%)  14.06
length=30,align1=0,align2=30:   14.06 (-5.88%)  12.50 (5.88%)   13.28
length=30,align1=30,align2=30:  13.28 (0.00%)   12.50 (5.88%)   13.28
length=31,align1=0,align2=0:    13.28 (0.00%)   12.50 (5.88%)   13.28
length=31,align1=31,align2=0:   14.06 (0.00%)   12.50 (11.11%)  14.06
length=31,align1=0,align2=31:   13.28 (0.00%)   12.50 (5.88%)   13.28
length=31,align1=31,align2=31:  14.06 (0.00%)   12.50 (11.11%)  14.06
length=48,align1=0,align2=0:    14.06 (0.00%)   14.06 (0.00%)   14.06
length=48,align1=3,align2=0:    14.06 (0.00%)   14.06 (0.00%)   14.06
length=48,align1=0,align2=3:    14.06 (-5.88%)  14.06 (-5.88%)  13.28
length=48,align1=3,align2=3:    13.28 (5.56%)   14.06 (0.00%)   14.06
length=80,align1=0,align2=0:    15.62 (-11.11%) 14.84 (-5.56%)  14.06
length=80,align1=5,align2=0:    15.62 (-11.11%) 16.41 (-16.67%) 14.06
length=80,align1=0,align2=5:    14.06 (0.00%)   15.62 (-11.11%) 14.06
length=80,align1=5,align2=5:    15.62 (-5.26%)  17.19 (-15.79%) 14.84
length=96,align1=0,align2=0:    14.06 (0.00%)   14.84 (-5.56%)  14.06
length=96,align1=6,align2=0:    14.84 (-5.56%)  16.41 (-16.67%) 14.06
length=96,align1=0,align2=6:    14.06 (0.00%)   14.84 (-5.56%)  14.06
length=96,align1=6,align2=6:    14.84 (-5.56%)  17.19 (-22.22%) 14.06
length=112,align1=0,align2=0:   17.19 (-4.76%)  14.06 (14.29%)  16.41
length=112,align1=7,align2=0:   17.19 (0.00%)   16.41 (4.55%)   17.19
length=112,align1=0,align2=7:   16.41 (0.00%)   14.84 (9.52%)   16.41
length=112,align1=7,align2=7:   17.19 (0.00%)   17.19 (0.00%)   17.19
length=144,align1=0,align2=0:   17.19 (-10.00%) 17.97 (-15.00%) 15.62
length=144,align1=9,align2=0:   17.19 (-4.76%)  18.75 (-14.29%) 16.41
length=144,align1=0,align2=9:   20.31 (-8.33%)  18.75 (0.00%)   18.75
length=144,align1=9,align2=9:   18.75 (-4.35%)  18.75 (-4.35%)  17.97
length=160,align1=0,align2=0:   18.75 (-4.35%)  17.97 (0.00%)   17.97
length=160,align1=10,align2=0:  18.75 (4.00%)   18.75 (4.00%)   19.53
length=160,align1=0,align2=10:  19.53 (-4.17%)  17.97 (4.17%)   18.75
length=160,align1=10,align2=10:         18.75 (-4.35%)  18.75 (-4.35%)  17.97
length=176,align1=0,align2=0:   18.75 (-4.35%)  17.19 (4.35%)   17.97
length=176,align1=11,align2=0:  19.53 (0.00%)   19.53 (0.00%)   19.53
length=176,align1=0,align2=11:  19.53 (-4.17%)  18.75 (0.00%)   18.75
length=176,align1=11,align2=11:         18.75 (0.00%)   17.97 (4.17%)   18.75
length=192,align1=0,align2=0:   18.75 (0.00%)   17.97 (4.17%)   18.75
length=192,align1=12,align2=0:  21.09 (-8.00%)  18.75 (4.00%)   19.53
length=192,align1=0,align2=12:  18.75 (0.00%)   18.75 (0.00%)   18.75
length=192,align1=12,align2=12:         18.75 (0.00%)   17.97 (4.17%)   18.75
length=208,align1=0,align2=0:   17.97 (0.00%)   20.31 (-13.04%) 17.97
length=208,align1=13,align2=0:  19.53 (7.41%)   21.09 (0.00%)   21.09
length=208,align1=0,align2=13:  23.44 (-11.11%) 21.09 (0.00%)   21.09
length=208,align1=13,align2=13:         21.09 (-3.85%)  21.09 (-3.85%)  20.31
length=224,align1=0,align2=0:   21.09 (-8.00%)  20.31 (-4.00%)  19.53
length=224,align1=14,align2=0:  23.44 (-11.11%) 20.31 (3.70%)   21.09
length=224,align1=0,align2=14:  21.09 (3.57%)   20.31 (7.14%)   21.88
length=224,align1=14,align2=14:         20.31 (0.00%)   19.53 (3.85%)   20.31
length=240,align1=0,align2=0:   20.31 (-4.00%)  19.53 (0.00%)   19.53
length=240,align1=15,align2=0:  22.66 (0.00%)   20.31 (10.34%)  22.66
length=240,align1=0,align2=15:  20.31 (-4.00%)  20.31 (-4.00%)  19.53
length=240,align1=15,align2=15:         21.88 (0.00%)   21.09 (3.57%)   21.88
length=272,align1=0,align2=0:   20.31 (0.00%)   28.12 (-38.46%) 20.31
length=272,align1=17,align2=0:  22.66 (0.00%)   27.34 (-20.69%) 22.66
length=272,align1=0,align2=17:  25.78 (-10.00%) 28.12 (-20.00%) 23.44
length=272,align1=17,align2=17:         22.66 (-3.57%)  27.34 (-25.00%) 21.88
length=288,align1=0,align2=0:   23.44 (-7.14%)  27.34 (-25.00%) 21.88
length=288,align1=18,align2=0:  22.66 (0.00%)   27.34 (-20.69%) 22.66
length=288,align1=0,align2=18:  23.44 (-3.45%)  25.00 (-10.35%) 22.66
length=288,align1=18,align2=18:         22.66 (-3.57%)  21.88 (0.00%)   21.88
length=304,align1=0,align2=0:   21.88 (0.00%)   21.88 (0.00%)   21.88
length=304,align1=19,align2=0:  23.44 (-3.45%)  22.66 (0.00%)   22.66
length=304,align1=0,align2=19:  22.66 (0.00%)   22.66 (0.00%)   22.66
length=304,align1=19,align2=19:         22.66 (-3.57%)  21.88 (0.00%)   21.88
length=320,align1=0,align2=0:   22.66 (-3.57%)  21.88 (0.00%)   21.88
length=320,align1=20,align2=0:  22.66 (0.00%)   22.66 (0.00%)   22.66
length=320,align1=0,align2=20:  22.66 (0.00%)   22.66 (0.00%)   22.66
length=320,align1=20,align2=20:         22.66 (-3.57%)  21.88 (0.00%)   21.88
length=336,align1=0,align2=0:   21.88 (0.00%)   24.22 (-10.71%) 21.88
length=336,align1=21,align2=0:  22.66 (0.00%)   25.00 (-10.35%) 22.66
length=336,align1=0,align2=21:  25.78 (0.00%)   25.00 (3.03%)   25.78
length=336,align1=21,align2=21:         25.00 (0.00%)   23.44 (6.25%)   25.00
length=352,align1=0,align2=0:   24.22 (0.00%)   24.22 (0.00%)   24.22
length=352,align1=22,align2=0:  25.00 (0.00%)   25.00 (0.00%)   25.00
length=352,align1=0,align2=22:  25.00 (-3.23%)  25.00 (-3.23%)  24.22
length=352,align1=22,align2=22:         25.00 (-3.23%)  24.22 (0.00%)   24.22
length=368,align1=0,align2=0:   25.00 (-3.23%)  23.44 (3.23%)   24.22
length=368,align1=23,align2=0:  25.00 (0.00%)   24.22 (3.12%)   25.00
length=368,align1=0,align2=23:  25.00 (-3.23%)  25.00 (-3.23%)  24.22
length=368,align1=23,align2=23:         25.00 (-6.67%)  23.44 (0.00%)   23.44
length=384,align1=0,align2=0:   24.22 (0.00%)   24.22 (0.00%)   24.22
length=384,align1=24,align2=0:  25.00 (0.00%)   24.22 (3.12%)   25.00
length=384,align1=0,align2=24:  25.00 (0.00%)   25.78 (-3.12%)  25.00
length=384,align1=24,align2=24:         24.22 (-3.33%)  23.44 (0.00%)   23.44
length=400,align1=0,align2=0:   25.00 (-3.23%)  26.56 (-9.68%)  24.22
length=400,align1=25,align2=0:  25.78 (-3.12%)  27.34 (-9.38%)  25.00
length=400,align1=0,align2=25:  27.34 (0.00%)   27.34 (0.00%)   27.34
length=400,align1=25,align2=25:         26.56 (0.00%)   25.78 (2.94%)   26.56
length=416,align1=0,align2=0:   26.56 (-3.03%)  25.78 (0.00%)   25.78
length=416,align1=26,align2=0:  28.12 (-2.86%)  27.34 (0.00%)   27.34
length=416,align1=0,align2=26:  27.34 (-2.94%)  28.12 (-5.88%)  26.56
length=416,align1=26,align2=26:         25.78 (0.00%)   26.56 (-3.03%)  25.78
length=432,align1=0,align2=0:   27.34 (-2.94%)  25.78 (2.94%)   26.56
length=432,align1=27,align2=0:  28.12 (-2.86%)  27.34 (0.00%)   27.34
length=432,align1=0,align2=27:  27.34 (0.00%)   28.12 (-2.86%)  27.34
length=432,align1=27,align2=27:         25.78 (0.00%)   25.78 (0.00%)   25.78
length=448,align1=0,align2=0:   26.56 (-3.03%)  25.78 (0.00%)   25.78
length=448,align1=28,align2=0:  27.34 (0.00%)   27.34 (0.00%)   27.34
length=448,align1=0,align2=28:  27.34 (0.00%)   28.12 (-2.86%)  27.34
length=448,align1=28,align2=28:         25.78 (0.00%)   25.78 (0.00%)   25.78
length=464,align1=0,align2=0:   25.78 (0.00%)   28.12 (-9.09%)  25.78
length=464,align1=29,align2=0:  28.12 (-2.86%)  29.69 (-8.57%)  27.34
length=464,align1=0,align2=29:  30.47 (0.00%)   30.47 (0.00%)   30.47
length=464,align1=29,align2=29:         28.12 (0.00%)   27.34 (2.78%)   28.12
length=480,align1=0,align2=0:   29.69 (-5.56%)  28.12 (0.00%)   28.12
length=480,align1=30,align2=0:  31.25 (-2.56%)  29.69 (2.56%)   30.47
length=480,align1=0,align2=30:  29.69 (0.00%)   30.47 (-2.63%)  29.69
length=480,align1=30,align2=30:         28.12 (0.00%)   28.12 (0.00%)   28.12
length=496,align1=0,align2=0:   28.12 (0.00%)   27.34 (2.78%)   28.12
length=496,align1=31,align2=0:  30.47 (-2.63%)  29.69 (0.00%)   29.69
length=496,align1=0,align2=31:  29.69 (0.00%)   30.47 (-2.63%)  29.69
length=496,align1=31,align2=31:         28.12 (-2.86%)  28.12 (-2.86%)  27.34
length=1024,align1=0,align2=0:  44.53 (0.00%)   44.53 (0.00%)   44.53
length=1024,align1=32,align2=0:         44.53 (-1.79%)  44.53 (-1.79%)  43.75
length=1024,align1=0,align2=32:         44.53 (-1.79%)  43.75 (0.00%)   43.75
length=1024,align1=32,align2=32:        43.75 (1.75%)   43.75 (1.75%)   44.53
length=1056,align1=0,align2=0:  46.88 (-1.69%)  46.88 (-1.69%)  46.09
length=1056,align1=33,align2=0:         53.12 (0.00%)   52.34 (1.47%)   53.12
length=1056,align1=0,align2=33:         52.34 (0.00%)   53.12 (-1.49%)  52.34
length=1056,align1=33,align2=33:        46.09 (0.00%)   46.88 (-1.69%)  46.09
length=1088,align1=0,align2=0:  46.88 (-1.69%)  46.09 (0.00%)   46.09
length=1088,align1=34,align2=0:         52.34 (0.00%)   52.34 (0.00%)   52.34
length=1088,align1=0,align2=34:         53.12 (-3.03%)  53.12 (-3.03%)  51.56
length=1088,align1=34,align2=34:        46.09 (0.00%)   46.88 (-1.69%)  46.09
length=1120,align1=0,align2=0:  49.22 (-1.61%)  48.44 (0.00%)   48.44
length=1120,align1=35,align2=0:         54.69 (1.41%)   55.47 (0.00%)   55.47
length=1120,align1=0,align2=35:         57.03 (0.00%)   55.47 (2.74%)   57.03
length=1120,align1=35,align2=35:        48.44 (0.00%)   49.22 (-1.61%)  48.44
length=1152,align1=0,align2=0:  47.66 (1.61%)   48.44 (0.00%)   48.44
length=1152,align1=36,align2=0:         55.47 (-1.43%)  55.47 (-1.43%)  54.69
length=1152,align1=0,align2=36:         58.59 (-1.35%)  55.47 (4.05%)   57.81
length=1152,align1=36,align2=36:        48.44 (0.00%)   49.22 (-1.61%)  48.44
length=1184,align1=0,align2=0:  53.12 (-3.03%)  50.78 (1.52%)   51.56
length=1184,align1=37,align2=0:         61.72 (-2.60%)  57.03 (5.19%)   60.16
length=1184,align1=0,align2=37:         62.50 (-1.27%)  57.03 (7.60%)   61.72
length=1184,align1=37,align2=37:        53.12 (-1.49%)  50.78 (2.99%)   52.34
length=1216,align1=0,align2=0:  53.91 (-4.55%)  50.78 (1.52%)   51.56
length=1216,align1=38,align2=0:         60.94 (0.00%)   57.03 (6.41%)   60.94
length=1216,align1=0,align2=38:         60.16 (0.00%)   57.81 (3.90%)   60.16
length=1216,align1=38,align2=38:        52.34 (-1.52%)  50.00 (3.03%)   51.56
length=1248,align1=0,align2=0:  54.69 (-2.94%)  53.12 (0.00%)   53.12
length=1248,align1=39,align2=0:         64.06 (-1.23%)  60.16 (4.94%)   63.28
length=1248,align1=0,align2=39:         60.94 (-2.63%)  60.16 (-1.32%)  59.38
length=1248,align1=39,align2=39:        53.12 (0.00%)   52.34 (1.47%)   53.12
length=1280,align1=0,align2=0:  52.34 (-1.52%)  52.34 (-1.52%)  51.56
length=1280,align1=40,align2=0:         61.72 (3.66%)   59.38 (7.32%)   64.06
length=1280,align1=0,align2=40:         60.94 (-2.63%)  60.16 (-1.32%)  59.38
length=1280,align1=40,align2=40:        52.34 (-1.52%)  52.34 (-1.52%)  51.56
length=1312,align1=0,align2=0:  54.69 (-1.45%)  55.47 (-2.90%)  53.91
length=1312,align1=41,align2=0:         63.28 (0.00%)   62.50 (1.23%)   63.28
length=1312,align1=0,align2=41:         62.50 (0.00%)   62.50 (0.00%)   62.50
length=1312,align1=41,align2=41:        53.91 (0.00%)   54.69 (-1.45%)  53.91
length=1344,align1=0,align2=0:  54.69 (0.00%)   54.69 (0.00%)   54.69
length=1344,align1=42,align2=0:         62.50 (0.00%)   62.50 (0.00%)   62.50
length=1344,align1=0,align2=42:         62.50 (-1.27%)  62.50 (-1.27%)  61.72
length=1344,align1=42,align2=42:        53.91 (0.00%)   53.91 (0.00%)   53.91
length=1376,align1=0,align2=0:  65.62 (-16.67%) 68.75 (-22.22%) 56.25
length=1376,align1=43,align2=0:         71.88 (-9.52%)  73.44 (-11.90%) 65.62
length=1376,align1=0,align2=43:         72.66 (-12.05%) 74.22 (-14.46%) 64.84
length=1376,align1=43,align2=43:        64.06 (-13.89%) 67.97 (-20.83%) 56.25
length=1408,align1=0,align2=0:  57.03 (-1.39%)  68.75 (-22.22%) 56.25
length=1408,align1=44,align2=0:         65.62 (-1.20%)  73.44 (-13.25%) 64.84
length=1408,align1=0,align2=44:         64.84 (0.00%)   74.22 (-14.46%) 64.84
length=1408,align1=44,align2=44:        56.25 (-1.41%)  68.75 (-23.94%) 55.47
length=1440,align1=0,align2=0:  67.97 (-14.47%) 64.84 (-9.21%)  59.38
length=1440,align1=45,align2=0:         74.22 (-10.47%) 68.75 (-2.33%)  67.19
length=1440,align1=0,align2=45:         72.66 (-6.90%)  69.53 (-2.30%)  67.97
length=1440,align1=45,align2=45:        65.62 (-13.51%) 58.59 (-1.35%)  57.81
length=1472,align1=0,align2=0:  66.41 (-14.86%) 58.59 (-1.35%)  57.81
length=1472,align1=46,align2=0:         73.44 (-9.30%)  67.19 (0.00%)   67.19
length=1472,align1=0,align2=46:         70.31 (-4.65%)  67.97 (-1.16%)  67.19
length=1472,align1=46,align2=46:        57.81 (0.00%)   58.59 (-1.35%)  57.81
length=1504,align1=0,align2=0:  60.94 (0.00%)   60.94 (0.00%)   60.94
length=1504,align1=47,align2=0:         71.09 (-1.11%)  70.31 (0.00%)   70.31
length=1504,align1=0,align2=47:         70.31 (-1.12%)  70.31 (-1.12%)  69.53
length=1504,align1=47,align2=47:        60.94 (-1.30%)  60.16 (0.00%)   60.16
length=1536,align1=0,align2=0:  62.50 (-3.90%)  60.16 (0.00%)   60.16
length=1536,align1=48,align2=0:         60.94 (-1.30%)  60.16 (0.00%)   60.16
length=1536,align1=0,align2=48:         61.72 (-3.95%)  60.16 (-1.32%)  59.38
length=1536,align1=48,align2=48:        60.94 (-1.30%)  60.16 (0.00%)   60.16
length=1568,align1=0,align2=0:  80.47 (-27.16%) 63.28 (0.00%)   63.28
length=1568,align1=49,align2=0:         86.72 (-18.09%) 72.66 (1.06%)   73.44
length=1568,align1=0,align2=49:         74.22 (-3.26%)  74.22 (-3.26%)  71.88
length=1568,align1=49,align2=49:        62.50 (0.00%)   61.72 (1.25%)   62.50
length=1600,align1=0,align2=0:  62.50 (-1.27%)  62.50 (-1.27%)  61.72
length=1600,align1=50,align2=0:         73.44 (0.00%)   71.88 (2.13%)   73.44
length=1600,align1=0,align2=50:         72.66 (0.00%)   73.44 (-1.08%)  72.66
length=1600,align1=50,align2=50:        62.50 (-1.27%)  62.50 (-1.27%)  61.72
length=1632,align1=0,align2=0:  64.84 (0.00%)   64.84 (0.00%)   64.84
length=1632,align1=51,align2=0:         75.78 (0.00%)   75.00 (1.03%)   75.78
length=1632,align1=0,align2=51:         78.91 (0.00%)   75.78 (3.96%)   78.91
length=1632,align1=51,align2=51:        64.84 (-2.47%)  64.84 (-2.47%)  63.28
length=1664,align1=0,align2=0:  64.84 (-1.22%)  64.84 (-1.22%)  64.06
length=1664,align1=52,align2=0:         75.78 (0.00%)   75.00 (1.03%)   75.78
length=1664,align1=0,align2=52:         80.47 (-0.98%)  75.78 (4.90%)   79.69
length=1664,align1=52,align2=52:        64.06 (-1.23%)  65.62 (-3.70%)  63.28
length=1696,align1=0,align2=0:  69.53 (-3.49%)  72.66 (-8.14%)  67.19
length=1696,align1=53,align2=0:         80.47 (-0.98%)  82.03 (-2.94%)  79.69
length=1696,align1=0,align2=53:         80.47 (0.96%)   82.03 (-0.96%)  81.25
length=1696,align1=53,align2=53:        68.75 (-2.33%)  72.66 (-8.14%)  67.19
length=1728,align1=0,align2=0:  67.97 (0.00%)   72.66 (-6.90%)  67.97
length=1728,align1=54,align2=0:         80.47 (-0.98%)  82.81 (-3.92%)  79.69
length=1728,align1=0,align2=54:         78.91 (-1.00%)  82.03 (-5.00%)  78.12
length=1728,align1=54,align2=54:        68.75 (0.00%)   72.66 (-5.68%)  68.75
length=1760,align1=0,align2=0:  77.34 (-12.50%) 68.75 (0.00%)   68.75
length=1760,align1=55,align2=0:         91.41 (-8.33%)  79.69 (5.56%)   84.38
length=1760,align1=0,align2=55:         88.28 (-10.78%) 80.47 (-0.98%)  79.69
length=1760,align1=55,align2=55:        77.34 (-11.24%) 68.75 (1.12%)   69.53
length=1792,align1=0,align2=0:  78.12 (-14.94%) 68.75 (-1.15%)  67.97
length=1792,align1=56,align2=0:         88.28 (-4.63%)  79.69 (5.56%)   84.38
length=1792,align1=0,align2=56:         88.28 (-9.71%)  80.47 (0.00%)   80.47
length=1792,align1=56,align2=56:        77.34 (-11.24%) 68.75 (1.12%)   69.53
length=1824,align1=0,align2=0:  72.66 (7.92%)   70.31 (10.89%)  78.91
length=1824,align1=57,align2=0:         85.94 (5.17%)   82.03 (9.48%)   90.62
length=1824,align1=0,align2=57:         82.03 (3.67%)   82.81 (2.75%)   85.16
length=1824,align1=57,align2=57:        70.31 (-1.12%)  70.31 (-1.12%)  69.53
length=1856,align1=0,align2=0:  70.31 (-1.12%)  70.31 (-1.12%)  69.53
length=1856,align1=58,align2=0:         83.59 (-0.94%)  82.03 (0.94%)   82.81
length=1856,align1=0,align2=58:         178.12 (-115.09%)       82.81 (0.00%)   82.81
length=1856,align1=58,align2=58:        70.31 (-1.12%)  70.31 (-1.12%)  69.53
length=1888,align1=0,align2=0:  73.44 (-1.08%)  78.91 (-8.60%)  72.66
length=1888,align1=59,align2=0:         85.94 (0.00%)   89.84 (-4.55%)  85.94
length=1888,align1=0,align2=59:         84.38 (0.00%)   89.06 (-5.56%)  84.38
length=1888,align1=59,align2=59:        72.66 (-1.09%)  78.12 (-8.70%)  71.88
length=1920,align1=0,align2=0:  72.66 (-1.09%)  78.12 (-8.70%)  71.88
length=1920,align1=60,align2=0:         85.94 (0.00%)   89.84 (-4.55%)  85.94
length=1920,align1=0,align2=60:         85.16 (0.00%)   89.06 (-4.59%)  85.16
length=1920,align1=60,align2=60:        72.66 (-1.09%)  78.91 (-9.78%)  71.88
length=1952,align1=0,align2=0:  75.00 (-1.05%)  75.00 (-1.05%)  74.22
length=1952,align1=61,align2=0:         88.28 (0.00%)   87.50 (0.88%)   88.28
length=1952,align1=0,align2=61:         87.50 (0.00%)   88.28 (-0.89%)  87.50
length=1952,align1=61,align2=61:        74.22 (0.00%)   74.22 (0.00%)   74.22
length=1984,align1=0,align2=0:  75.00 (-1.05%)  73.44 (1.05%)   74.22
length=1984,align1=62,align2=0:         89.06 (-0.89%)  87.50 (0.88%)   88.28
length=1984,align1=0,align2=62:         87.50 (0.00%)   88.28 (-0.89%)  87.50
length=1984,align1=62,align2=62:        74.22 (0.00%)   74.22 (0.00%)   74.22
length=2016,align1=0,align2=0:  77.34 (-1.02%)  76.56 (0.00%)   76.56
length=2016,align1=63,align2=0:         91.41 (-0.86%)  90.62 (0.00%)   90.62
length=2016,align1=0,align2=63:         89.84 (0.00%)   90.62 (-0.87%)  89.84
length=2016,align1=63,align2=63:        77.34 (-1.02%)  76.56 (0.00%)   76.56
length=4096,align1=0,align2=0:  141.41 (-0.56%) 146.88 (-4.44%) 140.62

Function: memcpy
__memcpy_thunderx       __memcpy_falkor __memcpy_generic
Variant: large
================================================================================
length=65543,align1=0,align2=0:         4018.75 (3.09%) 2634.38 (36.47%)        4146.88
length=65551,align1=0,align2=3:         4425.00 (-6.47%)        3134.38 (24.59%)        4156.25
length=65567,align1=3,align2=0:         2909.38 (29.95%)        3134.38 (24.53%)        4153.12
length=65599,align1=3,align2=5:         4415.62 (-6.16%)        3134.38 (24.64%)        4159.38
length=131079,align1=0,align2=0:        5765.62 (30.38%)        5240.62 (36.72%)        8281.25
length=131087,align1=0,align2=3:        8831.25 (-6.56%)        6271.88 (24.32%)        8287.50
length=131103,align1=3,align2=0:        5793.75 (29.05%)        6268.75 (23.23%)        8165.62
length=131135,align1=3,align2=5:        5806.25 (29.97%)        6259.38 (24.50%)        8290.62
length=262151,align1=0,align2=0:        11850.00 (28.91%)       10762.50 (35.43%)       16668.80
length=262159,align1=0,align2=3:        12043.80 (27.72%)       12700.00 (23.78%)       16662.50
length=262175,align1=3,align2=0:        12046.90 (27.90%)       12687.50 (24.07%)       16709.40
length=262207,align1=3,align2=5:        11984.40 (28.08%)       12678.10 (23.91%)       16662.50
length=524295,align1=0,align2=0:        24825.00 (25.00%)       24268.80 (27.34%)       33400.00
length=524303,align1=0,align2=3:        35731.20 (-6.53%)       25678.10 (23.44%)       33540.60
length=524319,align1=3,align2=0:        25893.80 (22.71%)       25725.00 (23.22%)       33503.10
length=524351,align1=3,align2=5:        25887.50 (22.86%)       25690.60 (23.45%)       33559.40
length=1048583,align1=0,align2=0:       50621.90 (0.30%)        50600.00 (0.34%)        50771.90
length=1048591,align1=0,align2=3:       53206.20 (0.54%)        51081.20 (4.51%)        53493.80
length=1048607,align1=3,align2=0:       53221.90 (0.32%)        51975.00 (2.66%)        53393.80
length=1048639,align1=3,align2=5:       53240.60 (0.36%)        51953.10 (2.77%)        53431.20
length=2097159,align1=0,align2=0:       103744.00 (-2.00%)      102447.00 (-1.00%)      102425.00
length=2097167,align1=0,align2=3:       108588.00 (-1.00%)      105159.00 (2.00%)       107606.00
length=2097183,align1=3,align2=0:       107678.00 (0.00%)       105250.00 (2.00%)       108125.00
length=2097215,align1=3,align2=5:       107906.00 (1.00%)       105841.00 (3.00%)       109475.00
length=4194311,align1=0,align2=0:       202994.00 (0.00%)       202500.00 (1.00%)       204809.00
length=4194319,align1=0,align2=3:       213350.00 (0.00%)       205997.00 (3.00%)       213384.00
length=4194335,align1=3,align2=0:       212653.00 (0.00%)       206444.00 (3.00%)       212900.00
length=4194367,align1=3,align2=5:       213044.00 (0.00%)       206084.00 (3.00%)       213847.00
length=8388615,align1=0,align2=0:       401294.00 (0.00%)       401231.00 (0.00%)       401944.00
length=8388623,align1=0,align2=3:       480872.00 (-14.00%)     406444.00 (3.00%)       422900.00
length=8388639,align1=3,align2=0:       422147.00 (0.00%)       407750.00 (3.00%)       422803.00
length=8388671,align1=3,align2=5:       442003.00 (-5.00%)      407125.00 (3.00%)       423509.00
length=16777223,align1=0,align2=0:      799809.00 (0.00%)       800000.00 (0.00%)       801756.00
length=16777231,align1=0,align2=3:      841184.00 (0.00%)       808525.00 (4.00%)       843775.00
length=16777247,align1=3,align2=0:      841166.00 (0.00%)       810147.00 (3.00%)       843147.00
length=16777279,align1=3,align2=5:      972569.00 (-16.00%)     808588.00 (4.00%)       843731.00
length=33554439,align1=0,align2=0:      1842240.00 (-0.01%)     1863590.00 (-1.17%)     1841990.00
length=33554447,align1=0,align2=3:      2103470.00 (-2.74%)     1919460.00 (6.25%)      2047440.00
length=33554463,align1=3,align2=0:      2075690.00 (-1.07%)     1930040.00 (6.02%)      2053720.00
length=33554495,align1=3,align2=5:      2110590.00 (-2.82%)     1924440.00 (6.25%)      2052650.00

Function: memcpy
__memcpy_thunderx       __memcpy_falkor __memcpy_generic
Variant: random
================================================================================
max-size=4096:  44061.90 (5.85%)        38568.20 (17.59%)       46799.90
max-size=8192:  42790.90 (5.27%)        38158.90 (15.52%)       45171.50
max-size=16384:         44912.10 (2.25%)        38710.40 (15.75%)       45945.00
max-size=32768:         43577.90 (1.23%)        37975.10 (13.93%)       44120.00
max-size=65536:         44375.50 (1.04%)        38474.20 (14.20%)       44840.60

	* manual/tunables.texi (Tunable glibc.tune.cpu): Add falkor.
	* sysdeps/aarch64/multiarch/Makefile (sysdep_routines): Add
	memcpy_falkor.
	* sysdeps/aarch64/multiarch/ifunc-impl-list.c (MAX_IFUNC):
	Bump.
	(__libc_ifunc_impl_list): Add __memcpy_falkor.
	* sysdeps/aarch64/multiarch/memcpy.c: Likewise.
	* sysdeps/aarch64/multiarch/memcpy_falkor.S: New file.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
	Add falkor.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_FALKOR):
	New macro.
 2017-08-09 06:32:17 +05:30
Adhemerval Zanella 9995c839a0 manual: Document getcontext uc_stack value on Linux [BZ #759] 
As decribed in BZ#759, Linux getcontext implementation on Linux does
differs from other SysV system about the returned uc_stack.  This is
true not only for i386, but for all the architecture I could actually
check (aarch64, arm, alpha, hppa, m68k, mips, mips64, mips64n32,
powerpc, powerpc64, powerpc64le, s390x, sh, sparc, sparc64, and x86).

And I think we should not change current behavior for some reasons:

1. POSIX 2008 removed this SySV interface for a good reason and changing
   this behavior adds nothing for current portable code.  POSIX 2001
   specification does states that stack should be saved [1] and current
   GLIBC code does in a arch-specific manner (inside the mcontext_t)
   which allows the setcontext to work correctly.

2. Changing this behavior would potentially require compat symbols and
   I see no gain in adding compat symbols for deprecated interfaces.

3. Also, for comment #2 in BZ#759, it is up to kernel do setup the contents
   for ucontext_t and currently it does not provide the stack information
   as well.  Trying to change it is also another fix that does not worth
   the possible gains.

Instead my proposal is to make it clear the current interface may differ
depending of the underlying operational system.

glibc documentation and close this bug as invalid.

	[BZ #759]
	* manual/setjmp.texi (getcontex): Document uc_stack value on Linux.

[1] http://pubs.opengroup.org/onlinepubs/009695399/functions/getcontext.html
 2017-08-08 16:16:43 -03:00
Siddhesh Poyarekar 15192aaa25 Update contributors and latest gcc and binutils versions 2017-08-02 18:22:58 +05:30
Rical Jasan d3675d957b manual: Refactor documentation of CHAR_BIT. 
This single-@item @table is better defined with @deftypevr, since the
CHAR_BIT macro has @standards (being declared in a header), and @items
in @tables are not considered annotatable.  Using @deftypevr
automatically includes the macro in the Variable and Constant Macro
Index and ensures its inclusion the Summary of Library Facilities.
@deftypevr is used to record the type of the macro so that it also
appears in the Summary.

The description is updated to mention a later POSIX requirement that
this macro have the value 8.

	* manual/lang.texi (CHAR_BIT): Convert from an @table to an
	@deftypevr.  Change standard from ISO to C90.  Mention the
	POSIX.1-2001 requirement of the value 8.
 2017-07-27 04:47:42 -07:00
Rical Jasan 88f9e73943 manual: Complete @standards in creature.texi. 
* manual/creature.texi (_REENTRANT): Annotate as obsolete.
	(_THREAD_SAFE): Likewise.
 2017-07-27 03:21:56 -07:00
Adhemerval Zanella 94070f86c0 posix: Add p{read,write}v2 RWF_NOWAIT flag (BZ#21738) 
Linux 4.12 (b745fafaf70c0a98a2e1e7ac8cb14542889ceb0e) adds a new
p{read,write}v2 flag RWF_NOWAIT.  This patch adds it for linux
uio-ext.h header.

Checked on x86_64-linux-gnu (on a 4.10 kernel).

	[BZ #21738]
	* manual/llio.texi (RWF_NOWAIT): New item.
	* misc/tst-preadvwritev2-common.c (do_test_with_invalid_flags):
	Add RWF_NOWAIT check.
	* sysdeps/unix/sysv/linux/bits/uio-ext.h (RWF_NOWAIT): New flag.
 2017-07-11 11:06:44 -03:00
DJ Delorie be8aa923a7 * manual/tunables.texi: Add missing @end deftp. 2017-07-06 19:54:13 -04:00
DJ Delorie d5c3fafc43 Add per-thread cache to malloc 
* config.make.in: Enable experimental malloc option.
* configure.ac: Likewise.
* configure: Regenerate.
* manual/install.texi: Document it.
* INSTALL: Regenerate.
* malloc/Makefile: Likewise.
* malloc/malloc.c: Add per-thread cache (tcache).
(tcache_put): New.
(tcache_get): New.
(tcache_thread_freeres): New.
(tcache_init): New.
(__libc_malloc): Use cached chunks if available.
(__libc_free): Initialize tcache if needed.
(__libc_realloc): Likewise.
(__libc_calloc): Likewise.
(_int_malloc): Prefill tcache when appropriate.
(_int_free): Likewise.
(do_set_tcache_max): New.
(do_set_tcache_count): New.
(do_set_tcache_unsorted_limit): New.
* manual/probes.texi: Document new probes.
* malloc/arena.c: Add new tcache tunables.
* elf/dl-tunables.list: Likewise.
* manual/tunables.texi: Document them.
* NEWS: Mention the per-thread cache.
 2017-07-06 13:37:30 -04:00
Siddhesh Poyarekar 28cfa3a48e tunables, aarch64: New tunable to override cpu 
Add a new tunable (glibc.tune.cpu) to override CPU identification on
aarch64.  This is useful in two cases: one where it is desirable to
pretend to be another CPU for purposes of testing or because routines
written for that CPU are beneficial for specific workloads and second
where the underlying kernel does not support emulation of MRS to get
the MIDR of the CPU.

	* elf/dl-tunables.h (tunable_is_name): Move from...
	* elf/dl-tunables.c (is_name): ... here.
	(parse_tunables, __tunables_init): Adjust.
	* manual/tunables.texi: Document glibc.tune.cpu.
	* sysdeps/aarch64/dl-tunables.list: New file.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (struct
	cpu_list): New type.
	(cpu_list): New list of CPU names and their MIDR.
	(get_midr_from_mcpu): New function.
	(init_cpu_features): Override MIDR if necessary.
 2017-06-30 22:58:39 +05:30
Joseph Myers 073e8fa773 Require binutils 2.25 or later to build glibc. 
This patch implements a requirement of binutils >= 2.25 (up from 2.22)
to build glibc.  Tests for 2.24 or later on x86_64 and s390 are
removed.  It was already the case, as indicated by buildbot results,
that 2.24 was too old for building tests for 32-bit x86 (produced
internal linker errors linking elf/tst-gnu2-tls1mod.so).  I don't know
if any configure tests for binutils features are obsolete given the
increased version requirement.

Tested for x86_64.

	* configure.ac (AS): Require binutils 2.25 or later.
	(LD): Likewise.
	* configure: Regenerated.
	* sysdeps/s390/configure.ac (AS): Remove version check.
	* sysdeps/s390/configure: Regenerated.
	* sysdeps/x86_64/configure.ac (AS): Remove version check.
	* sysdeps/x86_64/configure: Regenerated.
	* manual/install.texi (Tools for Compilation): Document
	requirement for binutils 2.25 or later.
	* INSTALL: Regenerated.
 2017-06-28 11:31:50 +00:00
Joseph Myers 034e738021 Add float128 support for ia64. 
This patch enables float128 support for ia64, so that all the
configurations where GCC supports _Float128 / __float128 as an
ABI-distinct type now have glibc support as well.  bits/floatn.h
declares the support to be available for GCC 4.4 and later, which is
when the libgcc support was added.  The removal of
sysdeps/ia64/fpu/k_rem_pio2.c is because the generic k_rem_pio2.c
defines a function required by the float128 code.

Tested (compilation only) with build-many-glibcs.py for ia64 (GCC 6
and GCC 7).

Given how long it is since libm-test-ulps has been updated for ia64, I
think truncating the file and regenerating it from scratch would be a
good idea when doing a regeneration to add float128 ulps.  I expect
various ia64 libm issues (at least some already filed in Bugzilla) to
result in test failures even after ulps regeneration, but hopefully
the float128 code will pass tests as it's the same as used on other
architectures.

	* sysdeps/ia64/Implies: Add ieee754/float128.
	* sysdeps/ia64/bits/floatn.h: New file.
	* sysdeps/ia64/float128-abi.h: Likewise.
	* manual/math.texi (Mathematics): Document support for _Float128
	on ia64.
	* sysdeps/ia64/Makefile [$(subdir) = math] (CPPFLAGS): Append to
	Makefile variable.
	* sysdeps/ia64/fpu/e_sqrtf128.c: New file.
	* sysdeps/ia64/fpu/k_rem_pio2.c: Remove file.
	* sysdeps/ia64/fpu/sfp-machine.h: New file.  Based on libgcc.
	* sysdeps/ia64/math-tests.h: New file.
	* math/libm-test-support.h (XFAIL_FLOAT128_PAYLOAD): Also define
	based on TEST_COND_binary128 for [__ia64__].
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise,
 2017-06-26 22:50:45 +00:00
Joseph Myers c86ed71d63 Add float128 support for x86_64, x86. 
This patch enables float128 support for x86_64 and x86.  All GCC
versions that can build glibc provide the required support, but since
GCC 6 and before don't provide __builtin_nanq / __builtin_nansq, sNaN
tests and some tests of NaN payloads need to be disabled with such
compilers (this does not affect the generated glibc binaries at all,
just the tests).  bits/floatn.h declares float128 support to be
available for GCC versions that provide the required libgcc support
(4.3 for x86_64, 4.4 for i386 GNU/Linux, 4.5 for i386 GNU/Hurd);
compilation-only support was present some time before then, but not
really useful without the libgcc functions.

fenv_private.h needed updating to avoid trying to put _Float128 values
in registers.  I make no assertion of optimality of the
math_opt_barrier / math_force_eval definitions for this case; they are
simply intended to be sufficient to work correctly.

Tested for x86_64 and x86, with GCC 7 and GCC 6.  (Testing for x32 was
compilation tests only with build-many-glibcs.py to verify the ABI
baseline updates.  I have not done any testing for Hurd, although the
float128 support is enabled there as for GNU/Linux.)

	* sysdeps/i386/Implies: Add ieee754/float128.
	* sysdeps/x86_64/Implies: Likewise.
	* sysdeps/x86/bits/floatn.h: New file.
	* sysdeps/x86/float128-abi.h: Likewise.
	* manual/math.texi (Mathematics): Document support for _Float128
	on x86_64 and x86.
	* sysdeps/i386/fpu/fenv_private.h: Include <bits/floatn.h>.
	(math_opt_barrier): Do not put _Float128 values in floating-point
	registers.
	(math_force_eval): Likewise.
	[__x86_64__] (SET_RESTORE_ROUNDF128): New macro.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (CPPFLAGS): Append
	to Makefile variable.
	* sysdeps/x86/fpu/e_sqrtf128.c: New file.
	* sysdeps/x86/fpu/sfp-machine.h: Likewise.  Based on libgcc.
	* sysdeps/x86/math-tests.h: New file.
	* math/libm-test-support.h (XFAIL_FLOAT128_PAYLOAD): New macro.
	* math/libm-test-getpayload.inc (getpayload_test_data): Use
	XFAIL_FLOAT128_PAYLOAD.
	* math/libm-test-setpayload.inc (setpayload_test_data): Likewise.
	* math/libm-test-totalorder.inc (totalorder_test_data): Likewise.
	* math/libm-test-totalordermag.inc (totalordermag_test_data):
	Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
 2017-06-26 22:02:24 +00:00
Paul E. Murphy f819dbea0a powerpc64le: Enable float128 
This patch adds ULPs for the float128 type, updates the abilist for libc
and libm, and adds the files bits/floatn.h and float128-abi.h, in order to
enable the new type for powerpc64le.

This patch also adds the implementation of sqrtf128 for powerpc64le, since
it is not implemented in libgcc.  The sfp-machine.h header is taken from
libgcc.

Tested for powerpc64le (GCC 6.2 and GCC 7.1), powerpc64 and s390x.

	* manual/math.texi (Mathematics): Mention the enabling of float128
	for powerpc64le.
	* sysdeps/powerpc/bits/floatn.h: New file.
	* sysdeps/powerpc/fpu/libm-test-ulps: Regenerated.
	* sysdeps/powerpc/fpu/math_private.h:
	(__ieee754_sqrtf128): New inline override.
	* sysdeps/powerpc/powerpc64le/Implies-before: New file.
	* sysdeps/powerpc/powerpc64le/Makefile: New file.
	* sysdeps/powerpc/powerpc64le/fpu/e_sqrtf128.c: New file.
	* sysdeps/powerpc/powerpc64le/fpu/sfp-machine.h: New file.
	* sysdeps/powerpc/powerpc64le/power9/fpu/e_sqrtf128.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
	Updated.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64le/float128-abi.h:
	New file.
 2017-06-26 15:04:47 -03:00
Gabriel F. T. Gomes 4efe3ce400 powerpc64le: Check for compiler features for float128 
On powerpc64le, support for float128 will be enabled, which requires some
compiler features to be present.  This patch adds a configure test to check
for such features, which are provided for powerpc64le since GCC 6.2.

Tested for powerpc64 and powerpc64le.

	* INSTALL: Regenerate.
	* manual/install.texi (Recommended Tools for Compilation): Mention
	the powerpc64le-specific requirement in the manual.
	* sysdeps/powerpc/powerpc64le/configure.ac: New file with checks
	for the compiler features required for building float128.
	* sysdeps/powerpc/powerpc64le/configure: New, auto-generated file.
 2017-06-26 14:58:47 -03:00
Rical Jasan d9660db223 manual: Fix a minor grammatical error. 
* manual/math.texi: Fix a grammatical error.
 2017-06-25 21:31:16 -07:00
Gabriel F. T. Gomes 52a8e5cb43 Document _FloatN and _FloatNx versions of math functions 
The functions defined in ISO/IEC TS 18661-3 take floating-point arguments
and return floating-point numbers of _FloatN and _FloatNx types.  Apart
from the type, these functions behave the same as their float, double, and
long double counterparts.  This patch adds the newer functions to the
manual.

	* manual/arith.texi (Infinity and NaN): Document SNANFN and SNANFNx.
	(Error Reporting by Mathematical Functions): Document HUGE_VAL_FN
	and HUGE_VAL_FNx.
	(Absolute Value): Document fabsfN, fabsfNx, cabsfN, cabsfNx.
	Rephrase the paragraph that mentions that fabs, fabsf, and fabsl
	are in math.h, to avoid having to list the _FloatN and _FloatNx
	variants as well.  Likewise for the cabs functions.
	(Normalization Functions): Document frexpfN, frexpfNx, ldexpfN,
	ldexpfNx, scalbnfN, scalbnfNx, scalblnfN, scalblnfNx.
	Mention that _FloatN and _FloatNx variants of scalbn and scalbln
	come from TS 18661-3, since this section explicitly states that
	these functions come from BSD.
	(Rounding Functions): Document ceilfN, ceilfNx, floorfN, floorfNx,
	truncfN, truncfNx, rintfN, rintfNx, nearbyintfN, nearbyintfNx,
	roundfN, roundfNx, roundevenfN, roundevenfNx, lrintfN, lrintfNx,
	llrintfN, llrintfNx, lroundfN, lroundfNx, llroundfN, llroundfNx,
	fromfpfN, fromfpfNx, ufromfpfN, ufromfpfNx, fromfpxfN, fromfpxfNx,
	ufromfpxfN, ufromfpxfNx, modffN, modffNx.
	(Remainder Functions): Document fmodfN, fmodfNx, remainderfN,
	remainderfNx.
	(Setting and modifying single bits of FP values): Document
	copysignfN, copysignfNx, nextafterfN, nextafterfNx, nextupfN,
	nextupfNx, nextdownfN, nextdownfNx, nanfN, nanfNx, canonicalizefN,
	canonicalizefNx, getpayloadfN, getpayloadfNx, setpayloadfN,
	setpayloadfNx, setpayloadsigfN, setpayloadsigfNx.
	(Floating-Point Comparison Functions): Document totalorderfN,
	totalorderfNx, totalordermagfN, totalordermagfNx.
	(Miscellaneous FP arithmetic functions): Document fminfN, fminfNx,
	fmaxfN, fmaxfNx, fminmagfN, fminmagfNx, fmaxmagfN, fmaxmagfNx,
	fdimfN, fdimfNx, fmafN, fmafNx.
	(Complex Numbers): Document the complex types: _FloatN complex and
	_FloatNx complex.
	(rojections, Conjugates, and Decomposing of Complex Numbers):
	Document crealfN, crealfNx, cimagfN, cimagfNx, conjfN, conjfNx,
	cargfN, cargfNx, cprojfN, cprojfNx.
	* manual/math.texi (Mathematics): Mention that the _FloatN and
	_FloatNx variants of the math functions come from TS 18661-3,
	unless otherwise stated.
	(Predefined Mathematical Constants): Document the _FloatN and
	_FloatNx variants of the macros prefixed with M_.
	(Trigonometric Functions): Document sinfN, sinfNx, cosfN, cosfNx,
	tanfN, tanfNx, sincosfN, sincosfNx, csinfN, csinfNx, ccosfN,
	ccosfNx, ctanfN, ctanfNx.
	(Inverse Trigonometric Functions): Document asinfN, asinfNx,
	acosfN, acosfNx, atanfN, atanfNx, atan2fN, atan2fNx.
	(Exponentiation and Logarithms): Document expfN, expfNx, exp2fN,
	exp2fNx, exp10fN, exp10fNx, logfN, logfNx, log10fN, log10fNx,
	log2fN, log2fNx, logbfN, logbfNx, ilogbfN, ilogbfNx, llogbfN,
	llogbfNx, powfN, powfNx, sqrtfN, sqrtfNx, cbrtfN, cbrtfNx, hypotfN,
	hypotfNx, expm1fN, expm1fNx, log1pfN, log1pfNx, cexpfN, cexpfNx,
	clogfN, clogfNx, clog10fN, clog10fNx, csqrtfN, csqrtfNx, cpowfN,
	cpowfNx.
	(Hyperbolic Functions): sinhfN, sinhfNx, coshfN, coshfNx, tanhfN,
	tanhfNx, csinhfN, csinhfNx, ccoshfN, ccoshfNx, ctanhfN, ctanhfNx,
	asinhfN, asinhfNx, acoshfN, acoshfNx, atanhfN, atanhfNx, casinhfN,
	casinhfNx, cacoshfN, cacoshfNx, catanhfN, catanhfNx.
	(Special Functions): Document erffN, erffNx, erfcfN, erfcfNx,
	lgammafN, lgammafNx, lgammarfN_r, lgammafNx_r, tgammafN, tgammafNx,
	j0fN, j0fNx, j1fN, j1fNx, jnfN, jnfNx, y0fN, y0fNx, y1fN, y1fNx,
	ynfN, ynfNx.
 2017-06-23 16:24:40 -03:00
Gabriel F. T. Gomes 18a336772d Prepare the manual to display math errors for float128 functions 
When float128 support gets enabled for powerpc64le, the ULP errors for
float128 functions need to be presented in the manual.  This patch adds
support for displaying them.

Tested for powerpc64le and s390x.

	* manual/libm-err-tab.pl (@all_floats, %suffices, parse_ulps):
	Enable generation of float128 entries on the error table.
 2017-06-23 10:31:09 -03:00
Gabriel F. T. Gomes 5070551cbf Describe remainder as primary and drem as alternative in the manual 
In preparation for the documentation of _FloatN and _FloatNx variants of
the remainder function, this patch changes the descriptions of remainder
and drem, so that remainder is described as primary and drem as an
alternative name for the same functionality.

	* manual/arith.texi (Remainder Functions): Describe remainder as
	primary and drem as an alternative name.  Change the comment on
	remainder to ISO, since it is defined in ISO C99.
 2017-06-22 13:08:17 -03:00
H.J. Lu 03feacb562 x86: Rename glibc.tune.ifunc to glibc.tune.hwcaps 
Rename glibc.tune.ifunc to glibc.tune.hwcaps and move it to
sysdeps/x86/dl-tunables.list since it is x86 specicifc.  Also
change type of data_cache_size, data_cache_size and
non_temporal_threshold to unsigned long int to match size_t.
Remove usage DEFAULT_STRLEN from cpu-tunables.c.

	* elf/dl-tunables.list (glibc.tune.ifunc): Removed.
	* sysdeps/x86/dl-tunables.list (glibc.tune.hwcaps): New.
	Remove security_level on all fields.
	* manual/tunables.texi: Replace ifunc with hwcaps.
	* sysdeps/x86/cpu-features.c (TUNABLE_CALLBACK (set_ifunc)):
	Renamed to ..
	(TUNABLE_CALLBACK (set_hwcaps)): This.
	(init_cpu_features): Updated.
	* sysdeps/x86/cpu-features.h (cpu_features): Change type of
	data_cache_size, data_cache_size and non_temporal_threshold to
	unsigned long int.
	* sysdeps/x86/cpu-tunables.c (DEFAULT_STRLEN): Removed.
	(TUNABLE_CALLBACK (set_ifunc)): Renamed to ...
	(TUNABLE_CALLBACK (set_hwcaps)): This.  Update comments.  Don't
	use DEFAULT_STRLEN.
 2017-06-21 10:21:37 -07:00
H.J. Lu 905947c304 tunables: Add IFUNC selection and cache sizes 
The current IFUNC selection is based on microbenchmarks in glibc.  It
should give the best performance for most workloads.  But other choices
may have better performance for a particular workload or on the hardware
which wasn't available at the selection was made.  The environment
variable, GLIBC_TUNABLES=glibc.tune.ifunc=-xxx,yyy,-zzz...., can be used
to enable CPU/ARCH feature yyy, disable CPU/ARCH feature yyy and zzz,
where the feature name is case-sensitive and has to match the ones in
cpu-features.h.  It can be used by glibc developers to override the
IFUNC selection to tune for a new processor or improve performance for
a particular workload.  It isn't intended for normal end users.

NOTE: the IFUNC selection may change over time.  Please check all
multiarch implementations when experimenting.

Also, GLIBC_TUNABLES=glibc.tune.x86_non_temporal_threshold=NUMBER is
provided to set threshold to use non temporal store to NUMBER,
GLIBC_TUNABLES=glibc.tune.x86_data_cache_size=NUMBER to set data cache
size, GLIBC_TUNABLES=glibc.tune.x86_shared_cache_size=NUMBER to set
shared cache size.

	* elf/dl-tunables.list (tune): Add ifunc,
	x86_non_temporal_threshold,
	x86_data_cache_size and x86_shared_cache_size.
	* manual/tunables.texi: Document glibc.tune.ifunc,
	glibc.tune.x86_data_cache_size, glibc.tune.x86_shared_cache_size
	and glibc.tune.x86_non_temporal_threshold.
	* sysdeps/unix/sysv/linux/x86/dl-sysdep.c: New file.
	* sysdeps/x86/cpu-tunables.c: Likewise.
	* sysdeps/x86/cacheinfo.c
	(init_cacheinfo): Check and get data cache size, shared cache
	size and non temporal threshold from cpu_features.
	* sysdeps/x86/cpu-features.c [HAVE_TUNABLES] (TUNABLE_NAMESPACE):
	New.
	[HAVE_TUNABLES] Include <unistd.h>.
	[HAVE_TUNABLES] Include <elf/dl-tunables.h>.
	[HAVE_TUNABLES] (TUNABLE_CALLBACK (set_ifunc)): Likewise.
	[HAVE_TUNABLES] (init_cpu_features): Use TUNABLE_GET to set
	IFUNC selection, data cache size, shared cache size and non
	temporal threshold.
	* sysdeps/x86/cpu-features.h (cpu_features): Add data_cache_size,
	shared_cache_size and non_temporal_threshold.
 2017-06-20 08:37:28 -07:00
Rical Jasan b8216e8278 manual: Complete @standards in lang.texi. 
* manual/lang.texi (LDBL_MANT_DIG): Add annotation.
	(LDBL_DIG): Likewise.
	(LDBL_MIN_EXP): Likewise.
	(LDBL_MIN_10_EXP): Likewise.
	(LDBL_MAX_EXP): Likewise.
	(LDBL_MAX_10_EXP): Likewise.
	(LDBL_MAX): Likewise.
	(LDBL_MIN): Likewise.
	(LDBL_EPSILON): Likewise.
	(FLT_ROUNDS): Change standard from ISO to C90.
	(FLT_RADIX): Likewise.
	(FLT_MANT_DIG, DBL_MANT_DIG): Likewise.
	(FLT_DIG, DBL_DIG): Likewise.
	(FLT_MIN_EXP, DBL_MIN_EXP): Likewise.
	(FLT_MIN_10_EXP, DBL_MIN_10_EXP): Likewise.
	(FLT_MAX_EXP, DBL_MAX_EXP): Likewise.
	(FLT_MAX_10_EXP, DBL_MAX_10_EXP): Likewise.
	(FLT_MAX, DBL_MAX): Likewise.
	(FLT_MIN, DBL_MIN): Likewise.
	(FLT_EPSILON, DBL_EPSILON): Likewise.
 2017-06-20 04:29:33 -07:00
Joseph Myers 4add86749a Require GCC 4.9 or later for building glibc. 
This patch makes configure require GCC 4.9 or later for building
glibc, and documents that requirement.  Requiring GCC 4.9 or later
allows use of _Generic (as in tzcode).  It would allow <stdatomic.h>
and _Atomic to be used as well if desired, although we need to avoid
any libatomic dependencies on any platforms.  This patch is explicitly
the minimum to implement a new version requirement, with any
consequent cleanups of conditional code (not in installed headers or
files shared with gnulib etc.) to be done separately.

Tested for x86_64.

	* configure.ac (libc_cv_compiler_ok): Require GCC 4.9 or later.
	* configure: Regenerated.
	* manual/install.texi (Tools for Compilation): Document
	requirement for GCC 4.9 or later.
	* INSTALL: Regenerated.
 2017-06-19 16:34:05 +00:00
Rical Jasan a448ee41e7 manual: Complete @standards in string.texi. 
* manual/string.texi (strdup): Complete header and standards
	annotation.
	(strncpy): Likewise.
 2017-06-16 01:23:17 -07:00
Rical Jasan 1b009d5ac3 manual: Complete @standards in arith.texi. 
* manual/arith.texi (FP_NAN): Add or complete header and
	standard annotations.
	(FP_INFINITE): Likewise.
	(FP_ZERO): Likewise.
	(FP_SUBNORMAL): Likewise.
	(FP_NORMAL): Likewise.
	(SNAN): Likewise.
	(SNANL): Likewise.
	(totalorderf): Likewise.
	(totalorderl): Likewise.
	(totalordermagf): Likewise.
	(totalordermagl): Likewise.
	(_Complex_I): Likewise.
	(I): Likewise.
 2017-06-16 01:20:50 -07:00
Rical Jasan 76b9ffef87 manual: Complete @standards in argp.texi. 
* manual/argp.texi (ARGP_HELP_USAGE): Add missing header and
	standard annotation.
	(ARGP_HELP_SHORT_USAGE): Likewise.
	(ARGP_HELP_SEE): Likewise.
	(ARGP_HELP_LONG): Likewise.
	(ARGP_HELP_PRE_DOC): Likewise.
	(ARGP_HELP_POST_DOC): Likewise.
	(ARGP_HELP_DOC): Likewise.
	(ARGP_HELP_BUG_ADDR): Likewise.
	(ARGP_HELP_LONG_ONLY): Likewise.
	(ARGP_HELP_EXIT_ERR): Likewise.
	(ARGP_HELP_EXIT_OK): Likewise.
	(ARGP_HELP_STD_ERR): Likewise.
	(ARGP_HELP_STD_USAGE): Likewise.
	(ARGP_HELP_STD_HELP): Likewise.
 2017-06-16 01:19:30 -07:00
Rical Jasan d08a7e4cbe manual: Replace summary.awk with summary.pl. 
The Summary is now generated from @standards, and syntax-checking is
performed.  If invalid @standards syntax is detected, summary.pl will
fail, reporting all errors.  Failure and error reporting is disabled
for now, however, since much of the manual is still incomplete
wrt. header and standards annotations.

Note that the sorting order of the Summary has changed; summary.pl
respects the locale, like summary.awk did, but the use of LC_ALL=C is
introduced in the Makefile.  Other notable deviations are improved
detection of the annotated elements' names, which are used for
sorting, and improved detection of the @node used to reference into
the manual.  The most noticeable difference in the rendered Summary is
that entries may now contain multiple lines, one for each header and
standard combination.

summary.pl accepts a `--help' option, which details the expected
syntax of @standards.  If errors are reported, the user is directed to
this feature for further information.

	* manual/Makefile: Generate summary.texi with summary.pl.
	Force use of the C locale.  Update Perl dependency comment.
	* manual/header.texi: Update reference to summary.awk.
	* manual/macros.texi: Refer authors to `summary.pl --help'.
	* manual/summary.awk: Remove file.
	* manual/summary.pl: New file.  Generate summary.texi, and
	check for @standards-related syntax errors.
	* manual/argp.texi: Convert header and standards @comments to
	@standards.
	* manual/arith.texi: Likewise.
	* manual/charset.texi: Likewise.
	* manual/conf.texi: Likewise.
	* manual/creature.texi: Likewise.
	* manual/crypt.texi: Likewise.
	* manual/ctype.texi: Likewise.
	* manual/debug.texi: Likewise.
	* manual/errno.texi: Likewise.
	* manual/filesys.texi: Likewise.
	* manual/getopt.texi: Likewise.
	* manual/job.texi: Likewise.
	* manual/lang.texi: Likewise.
	* manual/llio.texi: Likewise.
	* manual/locale.texi: Likewise.
	* manual/math.texi: Likewise.
	* manual/memory.texi: Likewise.
	* manual/message.texi: Likewise.
	* manual/pattern.texi: Likewise.
	* manual/pipe.texi: Likewise.
	* manual/process.texi: Likewise.
	* manual/resource.texi: Likewise.
	* manual/search.texi: Likewise.
	* manual/setjmp.texi: Likewise.
	* manual/signal.texi: Likewise.
	* manual/socket.texi: Likewise.
	* manual/startup.texi: Likewise.
	* manual/stdio.texi: Likewise.
	* manual/string.texi: Likewise.
	* manual/sysinfo.texi: Likewise.
	* manual/syslog.texi: Likewise.
	* manual/terminal.texi: Likewise.
	* manual/threads.texi: Likewise.
	* manual/time.texi: Likewise.
	* manual/users.texi: Likewise.
 2017-06-15 21:26:20 -07:00
Rical Jasan 27691d5cec manual: Create empty placeholder macros for @standards. 
Header and standards annotations are slated for standardization,
including being rendered in the description of functions, variables,
etc. (elements), and eventually required.  This commit adds @standards
dummy macros so we can convert all existing annotations to the new
framework while maintaining the rendered status quo.

There needs to be a way to disambiguate annotations in lists of @*x
elements, where a common description is shared but some elements may
have different headers or standards.  The @standardsx macro fills this
role by accepting an additional parameter: the name of the annotated
element.

	* manual/macros.texi (@standards): New macro.  Provide
	placeholder for header and standards annotations.
	(@standardsx): New macro.  Likewise, for lists of @*x
	elements.
 2017-06-15 21:26:19 -07:00
Siddhesh Poyarekar 2c0b90ab44 Enable tunables by default 
All of the major architectures are adopting tunables as a way to add
tuning to the library, from hwcap_mask for aarch64 to HLE for s390 and
ifunc and cache geometry for x86.  Given this adoption and the fact
that we don't want additional tuning knobs to be added outside of
tunables, it makes sense to enable tunables by default using this
trivial patch.

Smoke tested on x86 to ensure that tunables code was built without
specifying it as a configure flag.  I have kept it as --enabled and
not changed it to --disable since we want to still keep the option of
different kinds of front-ends for tunables.

	* configure.ac(--enable-tunables): Enable by default.
	* configure: Regenerate.
	* NEWS: Mention change.
	* manual/install.texi (enable-tunables): Adjust documentation.
	* INSTALL: Regenerate.
 2017-06-15 15:12:54 +05:30
Gabriel F. T. Gomes 7d641c411d float128: Add strfromf128, strtof128, and wcstof128 to the manual 
* manual/math.texi (Mathematics): Add description for _FloatN and
	_FloatNx types and mentions that they are not support in glibc for
	any architecture, so far.
	* manual/arith.texi (wcstof, wcstold): Replace the mention to
	stdlib.h with wchar.h.
	(Parsing of Floats): Add descriptions for strtofN and wcstofN.
	(Printing of Floats): Add description for strfromfN.
 2017-06-12 14:48:53 -03:00
Siddhesh Poyarekar ea9b0ecbf0 tunables: Add LD_HWCAP_MASK to tunables 
Add LD_HWCAP_MASK to tunables in preparation of it being removed from
rtld.c.  This allows us to read LD_HWCAP_MASK much earlier so that it
can influence IFUNC resolution in aarch64.

This patch does not actually do anything other than read the
LD_HWCAP_MASK variable and add the tunables way to set the
LD_HWCAP_MASK, i.e. via the glibc.tune.hwcap_mask tunable.  In a
follow-up patch, the _dl_hwcap_mask will be replaced with
glibc.tune.hwcap_mask to complete the transition.

	* elf/dl-tunables.list: Add glibc.tune.hwcap_mask.
	* scripts/gen-tunables.awk: Include dl-procinfo.h.
	* manual/tunables.texi: Document glibc.tune.hwcap_mask.
 2017-06-07 11:11:37 +05:30
Rical Jasan 3e6def237a manual: Provide consistent errno documentation. 
The @errno macro is extended to render the canonical error string in
every documented errno error.  Redundant entries and "???" are
removed.  Sixty-six errors now at least contain the error string as
the description, where no description (or "???") existed before.

	* manual/errno.texi: Remove redundant error strings.
	* manual/macros.texi (@errno): Render the error string in
	every description.
 2017-06-02 13:49:20 -07:00
Adhemerval Zanella 52bd938169 posix: Implement preadv2 and pwritev2 
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.
 2017-05-31 17:35:46 -03:00
Dennis Wölfing 2e0bbbfbf9 Add reallocarray function 
The reallocarray function is an extension from OpenBSD.  It is an
integer-overflow-safe replacement for realloc(p, X*Y) and
malloc(X*Y) (realloc(NULL, X*Y)).  It can therefore help in preventing
certain security issues in code.

This is an updated version of a patch originally submitted by Rüdiger
Sonderfeld in May 2014 [1].

Checked on i686-linux-gnu and x86_64-linux-gnu.

[1] <https://sourceware.org/ml/libc-alpha/2014-05/msg00481.html>.

2017-05-30  Dennis Wölfing  <denniswoelfing@gmx.de>
            Rüdiger Sonderfeld  <ruediger@c-plusplus.de>

	* include/stdlib.h (__libc_reallocarray): New declaration.
	* malloc/Makefile (routines): Add reallocarray.
	(tests): Add tst-reallocarray.c.
	* malloc/Versions: Add reallocarray and __libc_reallocarray.
	* malloc/malloc-internal.h (check_mul_overflow_size_t): New inline
	function.
	* malloc/malloc.h (reallocarray): New declaration.
	* stdlib/stdlib.h (reallocarray): Likewise.
	* malloc/reallocarray.c: New file.
	* malloc/tst-reallocarray.c: New test file.
	* manual/memory.texi: Document reallocarray.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add reallocarray.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tilepro/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
 2017-05-30 18:27:57 -03:00
Adhemerval Zanella f1a67a2c78 libio: Avoid dup already opened file descriptor [BZ#21393] 
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
 2017-05-22 18:13:35 -03:00
Rical Jasan a429d2ff07 manual: Convert errno @comments to new @errno macro. 
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.
 2017-05-19 22:47:53 -07:00
Rical Jasan a449fc68f6 manual: Convert @tables of annotated @items to @vtables. 
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.
 2017-05-18 00:44:06 -07:00
Rical Jasan f227c3e0a6 manual: Fix up invalid header and standards syntax. 
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.
 2017-05-18 00:39:48 -07:00
Paul E. Murphy 4fc12f0eda Add support for testing __STDC_WANT_IEC_60559_TYPES_EXT__ 
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.
 2017-05-09 11:40:28 -03:00
Adhemerval Zanella 717da4b3be manual: Add preadv and pwritev documentation 
* manual/llio.texi: Add preadv and pwritev documentation.
 2017-05-04 17:44:12 -03:00
Florian Weimer 44e4b889ab manual: Document replacing malloc [BZ #20424] 2017-04-21 10:28:37 +02:00
Florian Weimer e92030239a Assume that accept4 is always available and works 
Simplify the Linux accept4 implementation based on the assumption
that it is available in some way.  __ASSUME_ACCEPT4_SOCKETCALL was
previously unused, so remove it.

For ia64, the accept4 system call (and socket call) were backported
in kernel version 3.2.18.  Reflect this in the installation
instructions.
 2017-04-19 07:44:48 +02:00
Florian Weimer 025b33ae84 malloc: Turn cfree into a compatibility symbol 2017-04-18 11:50:58 +02:00
Florian Weimer a42478b7bf manual: readdir, readdir64 are thread-safe 
They only modify the state in the dirstream argument, and we
generally do not treat this as a reason to mark a function as
not thread-safe.  For an example, see random_r, which is marked
as thread-safe even though the random state is not protected
by a lock.
 2017-04-11 18:04:34 +02:00
Zack Weinberg bf079e19f5 getopt: remove USE_NONOPTION_FLAGS 
glibc's implementation of getopt includes code to parse an environment
variable named _XXX_GNU_nonoption_argv_flags_ (where XXX is the
current process's PID in decimal); but all of it has been #ifdefed out
since 2001, with no official way to turn it back on.

According to commentary in our config.h.in, bash version 2.0 set this
environment variable to indicate argv elements that were the result of
glob expansion and therefore should not be treated as options, but the
feature was "disabled later" because "it caused problems".  According
to bash's CHANGES file, "later" was release 2.01; it gives no more
detail about what the problems were.

Version 2.0 of bash was released on the last day of 1996, and version
2.01 in June of 1997.  Twenty years later, I think it is safe to
assume that this environment variable isn't coming back.

	* config.h.in (USE_NONOPTION_FLAGS): Remove.
	* csu/init-first.c: Remove all #ifdef USE_NONOPTION_FLAGS blocks.
	* sysdeps/mach/hurd/i386/init-first.c: Likewise.
	* posix/getopt_int.h: Likewise.
	* posix/getopt.c: Likewise. Also remove SWAP_FLAGS and the
	__libc_argc and __libc_argv externs, which were only used by
	#ifdef USE_NONOPTION_FLAGS blocks.
	* posix/getopt_init.c: Remove file.
	* posix/Makefile (routines): Remove getopt_init.
	* include/getopt.h: Don't declare __getopt_initialize_environment.
	* manual/getopt.texi: Remove mention of USE_NONOPTION_FLAGS in
	a comment.
 2017-04-07 07:45:53 -04:00
Thorsten Kukuk 1e4d83f6fe Deprecate libnsl by default (only shared library will be 
build for backward compatibility, no linking possible) and disable building
of libnss_compat, libnss_nis and libnss_nisplus, except --enable-obsolete-nsl
option is given to configure.

        * config.h.in: Add LINK_OBSOLETE_NSL.
        * config.make.in: Add build-obsolete-nsl.
        * configure.ac: Add obsolete-nsl option.
        * include/libc-symbols.h: Define libnsl_hidden_nolink_def.
        * include/rpcsvc/yp.h: Add missing functions as libnsl_hidden_proto.
        * include/rpcsvc/nislib.h: Likewise.
        * include/rpcsvc/ypclnt.h: Likewise.
        * manual/install.texi: Document --enable-obsolete-nsl.
        * nis/Makefile: Build only libnsl by default (add build-obsolete-nsl).
        * nis/nis_add.c: Replace libnsl_hidden_def with
        libnsl_hidden_nolink_def.
        * nis/nis_addmember.c: Likewise.
        * nis/nis_call.c: Likewise.
        * nis/nis_clone_obj.c: Likewise.
        * nis/nis_defaults.c: Likeise.
        * nis/nis_domain_of_r.c: Likewise.
        * nis/nis_error.c: Likewise.
        * nis/nis_file.c: Likewise.
        * nis/nis_free.c: Likewise.
        * nis_local_names.c: Likewise.
        * nis/nis_lookup.c: Likewise.
        * nis/nis_modify.c: Likewise.
        * nis/nis_print.c: Likewise.
        * nis/nis_remove.c: Likewise.
        * nis/nis_table.c: Likewise.
        * nis/nis_util.c: Likewise.
        * nis/nis_xdr.c: Likewise.
        * nis/yp_xdr.c: Likewise.
        * nis/ypclnt.c: Likewise.
        * nis/ypupdate_xdr.c: Likewise.
        * nis/nis_checkpoint.c: Add libnsl_hidden_nolink_def to all functions.
        * nis/nis_clone_dir.c: Likewise.
        * nis/nis_clone_res.c: Likewise.
        * nis/nis_creategroup.c: Likewise.
        * nis/nis_destroygroup.c: Likewise.
        * nis/nis_domain_of.c: Likewise.
        * nis/nis_getservlist.c: Likewise.
        * nis/nis_ismember.c: Likewise.
        * nis/nis_mkdir.c: Likewise.
        * nis/nis_ping.c: Likewise.
        * nis/nis_print_group_entry.c: Likewise.
        * nis/nis_removemember.c: Likewise.
        * nis/nis_rmdir.c: Likewise.
        * nis/nis_server.c: Likewise.
        * nis/nis_subr.c: Likewise.
        * nis/nis_verifygroup.c: Likewise.

Signed-off-by: Thorsten Kukuk <kukuk@suse.com>
 2017-03-21 15:14:27 +01:00
Florian Weimer 8492c4dd69 timezone: Remove TZNAME_MAX limit from sysconf [BZ #15576] 
glibc does not impose a limit, and POSIX does not allow a
sysconf limit which changes during the lifetime of a process.
 2017-03-07 17:45:38 +01:00
Florian Weimer 2d6ab5df3b Document and fix --enable-bind-now [BZ #21015] 2017-03-02 14:44:28 +01:00
Rical Jasan ef8659eab6 Fix a typo in the manual. 
I only caught this because I saw a file in manual/ change.  Oh, the
irony...  and thank you!

	* manual/contrib.texi: Fix typo.
 2017-02-08 01:34:12 -08:00
Siddhesh Poyarekar 43ce02c6ec Fix typo in manual 
Apparently, implementating is not a word; who would have thunk it...
 2017-02-07 18:49:45 +05:30
Joseph Myers 2b7dc4c868 Do not hardcode list of libm functions in libm-err-tab.pl. 
manual/libm-err-tab.pl contains a hardcoded list of libm functions for
which ulps are listed in the manual, and another hardcoded list in a
comment of functions deliberately excluded because of an expected lack
of ulps (and the two together are not in fact an exhaustive list of
libm functions tested through the libm-test machinery).

This patch removes these hardcoded lists, so eliminating this from the
places needing updating when a new libm function is added.  Instead,
ulps are tabulated for functions for which they are seen in
libm-test-ulps files, in alphabetical order.  The pseudo-function
names such as *_downward and *_vlen* are excluded since they are
excluded from the existing lists, and the description in the manual is
updated to explain how those entries are excluded and if a function is
not listed at all it does not have known errors.

Tested for x86_64.

	* manual/libm-err-tab.pl (@all_functions): Change to
	%all_functions.  Initialize as empty.
	(parse_ulps): Add to %all_functions based on functions found in
	ulps files.  Ignore results for non-default rounding modes and
	vector functions.
	(print_platforms): Use %all_platforms.
	* manual/math.texi (Errors in Math Functions): Document omissions
	from the table.
 2017-02-06 17:55:59 +00:00
Siddhesh Poyarekar 1900fab98d Add more contributors to contrib.texi 2017-02-05 20:50:23 +05:30
Joseph Myers ae7b8fbdda Update install.texi latest GCC version known to work. 
* manual/install.texi (Tools for Compilation): Update GCC version
	known to work to build glibc.
	* INSTALL: Regenerated.
 2017-01-18 17:27:47 +00:00