Commit Graph

1290 Commits

Author SHA1 Message Date
Zack Weinberg
c66b29f9cc Installed-header hygiene (BZ#20366): stack_t.
sys/ucontext.h unconditionally uses stack_t, and it does not make
sense to change that.  But signal.h only declares stack_t under
__USE_XOPEN_EXTENDED || __USE_XOPEN2K8.  The actual definition is
already in a bits header, bits/sigstack.h, but that header insists on
only being included by signal.h, so we have to change that as well as
all of the sys/ucontext.h variants.  (Some but not all variants of
bits/sigcontext.h, which sys/ucontext.h may also need, had already
received this adjustment; for consistency, I made them all the same,
even if that's not strictly necessary in some configurations.)
bits/sigcontext.h and bits/sigstack.h also all need to receive
multiple inclusion guards.

	* sysdeps/generic/sys/ucontext.h
	* sysdeps/arm/sys/ucontext.h
	* sysdeps/i386/sys/ucontext.h
	* sysdeps/m68k/sys/ucontext.h
	* sysdeps/mips/sys/ucontext.h
	* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
	* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
	* sysdeps/unix/sysv/linux/arm/sys/ucontext.h
	* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
	* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
	* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
	* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
	* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/s390/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sh/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/tile/sys/ucontext.h
	* sysdeps/unix/sysv/linux/x86/sys/ucontext.h:
	Include both bits/sigcontext.h and bits/sigstack.h.
	Fix grammar error in comment, if present.

	* bits/sigstack.h
	* sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h
	* sysdeps/unix/sysv/linux/alpha/bits/sigstack.h
	* sysdeps/unix/sysv/linux/bits/sigstack.h
	* sysdeps/unix/sysv/linux/ia64/bits/sigstack.h
	* sysdeps/unix/sysv/linux/mips/bits/sigstack.h
	* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h
	* sysdeps/unix/sysv/linux/sparc/bits/sigstack.h
	* bits/sigcontext.h
	* sysdeps/mach/hurd/i386/bits/sigcontext.h
	* sysdeps/unix/sysv/linux/bits/sigcontext.h
	* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
	* sysdeps/unix/sysv/linux/sparc/bits/sigcontext.h:
	Add multiple inclusion guard.  Permit inclusion by sys/ucontext.h
	as well as signal.h, if this was not already allowed.  Request
	definition of size_t if necessary.  Minimize semantically-null
	differences across files.
2016-09-23 08:43:56 -04:00
Florian Weimer
8837917cf1 Remove remnants of .og patterns
This was used by --enable-omitfp, and the bulk of it was removed in this
commit:

commit bdeba1354b
Author: Ulrich Drepper <drepper@gmail.com>
Date:   Sat Jan 7 11:29:31 2012 -0500

    Remove --enable-omitfp support
2016-09-20 12:18:13 +02:00
Joseph Myers
ec94343f59 Add femode_t functions.
TS 18661-1 defines a type femode_t to represent the set of dynamic
floating-point control modes (such as the rounding mode and trap
enablement modes), and functions fegetmode and fesetmode to manipulate
those modes (without affecting other state such as the raised
exception flags) and a corresponding macro FE_DFL_MODE.

This patch series implements those interfaces for glibc.  This first
patch adds the architecture-independent pieces, the x86 and x86_64
implementations, and the <bits/fenv.h> and ABI baseline updates for
all architectures so glibc keeps building and passing the ABI tests on
all architectures.  Subsequent patches add the fegetmode and fesetmode
implementations for other architectures.

femode_t is generally an integer type - the same type as fenv_t, or as
the single element of fenv_t where fenv_t is a structure containing a
single integer (or the single relevant element, where it has elements
for both status and control registers) - except where architecture
properties or consistency with the fenv_t implementation indicate
otherwise.  FE_DFL_MODE follows FE_DFL_ENV in whether it's a magic
pointer value (-1 cast to const femode_t *), a value that can be
distinguished from valid pointers by its high bits but otherwise
contains a representation of the desired register contents, or a
pointer to a constant variable (the powerpc case; __fe_dfl_mode is
added as an exported constant object, an alias to __fe_dfl_env).

Note that where architectures (that share a register between control
and status bits) gain definitions of new floating-point control or
status bits in future, the implementations of fesetmode for those
architectures may need updating (depending on whether the new bits are
control or status bits and what the implementation does with
previously unknown bits), just like existing implementations of
<fenv.h> functions that take care not to touch reserved bits may need
updating when the set of reserved bits changes.  (As any new bits are
outside the scope of ISO C, that's just a quality-of-implementation
issue for supporting them, not a conformance issue.)

As with fenv_t, femode_t should properly include any software DFP
rounding mode (and for both fenv_t and femode_t I'd consider that
fragment of DFP support appropriate for inclusion in glibc even in the
absence of the rest of libdfp; hardware DFP rounding modes should
already be included if the definitions of which bits are status /
control bits are correct).

Tested for x86_64, x86, mips64 (hard float, and soft float to test the
fallback version), arm (hard float) and powerpc (hard float, soft
float and e500).  Other architecture versions are untested.

	* math/fegetmode.c: New file.
	* math/fesetmode.c: Likewise.
	* sysdeps/i386/fpu/fegetmode.c: Likewise.
	* sysdeps/i386/fpu/fesetmode.c: Likewise.
	* sysdeps/x86_64/fpu/fegetmode.c: Likewise.
	* sysdeps/x86_64/fpu/fesetmode.c: Likewise.
	* math/fenv.h: Update comment on inclusion of <bits/fenv.h>.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fegetmode): New function
	declaration.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetmode): Likewise.
	* bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New
	typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/m68k/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (__fe_dfl_mode): New variable
	declaration.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/tile/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* manual/arith.texi (FE_DFL_MODE): Document macro.
	(fegetmode): Document function.
	(fesetmode): Likewise.
	* math/Versions (fegetmode): New libm symbol at version
	GLIBC_2.25.
	(fesetmode): Likewise.
	* math/Makefile (libm-support): Add fegetmode and fesetmode.
	(tests): Add test-femode and test-femode-traps.
	* math/test-femode-traps.c: New file.
	* math/test-femode.c: Likewise.
	* sysdeps/powerpc/fpu/fenv_const.c (__fe_dfl_mode): Declare as
	alias for __fe_dfl_env.
	* sysdeps/powerpc/nofpu/fenv_const.c (__fe_dfl_mode): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c
	(__fe_dfl_mode): Likewise.
	* sysdeps/powerpc/Versions (__fe_dfl_mode): New libm symbol at
	version GLIBC_2.25.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-09-07 16:40:09 +00:00
Paul E. Murphy
2bad840e9d Remove unneeded stubs for k_rem_pio2l.
This is only used for the float and double variants.

Instead, just add it to the type specific list of files,
and remove all stubs, and remove the declaration from
math_private.h.

I verified x86_64, i486, ia64, m68k, and ppc64 build.
2016-09-01 09:31:06 -05:00
Joseph Myers
5146356f5a Add fesetexcept.
TS 18661-1 defines an fesetexcept function for setting floating-point
exception flags without the side-effect of causing enabled traps to be
taken.

This patch series implements this function for glibc.  The present
patch adds the fallback stub implementation, x86 and x86_64
implementations, documentation, tests and ABI baseline updates.  The
remaining patches, some of them untested, add implementations for
other architectures.  The implementations generally follow those of
the fesetexceptflag function.

As for fesetexceptflag, the approach taken for architectures where
setting flags causes enabled traps to be taken is to set the flags
(and potentially cause traps) rather than refusing to set the flags
and returning an error.  Since ISO C and TS 18661 provide no way to
enable traps, this is formally in accordance with the standards.

The NEWS entry should be considered a placeholder, since this patch
series is intended to be followed by further such series adding other
TS 18661-1 features, so that the NEWS entry would end up looking more
like

* New <fenv.h> features from TS 18661-1:2014 are added to libm: the
  fesetexcept, fetestexceptflag, fegetmode and fesetmode functions,
  the femode_t type and the FE_DFL_MODE macro.

with hopefully more such entries for other features, rather than
having an entry for a single function in the end.

I believe we have consensus for adding TS 18661-1 interfaces as per
<https://sourceware.org/ml/libc-alpha/2016-06/msg00421.html>.

Tested for x86_64, x86, mips64 (hard float, and soft float to test the
fallback version), arm (hard float) and powerpc (hard float, soft
float and e500).

	* math/fesetexcept.c: New file.
	* sysdeps/i386/fpu/fesetexcept.c: Likewise.
	* sysdeps/x86_64/fpu/fesetexcept.c: Likewise.
	* math/fenv.h: Define
	__GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include
	<bits/libc-header-start.h> instead of including <features.h>.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetexcept): New function
	declaration.
	* manual/arith.texi (fesetexcept): Document function.
	* math/Versions (fesetexcept): New libm symbol at version
	GLIBC_2.25.
	* math/Makefile (libm-support): Add fesetexcept.
	(tests): Add test-fesetexcept and test-fesetexcept-traps.
	* math/test-fesetexcept.c: New file.
	* math/test-fesetexcept-traps.c: Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-08-16 16:16:10 +00:00
H.J. Lu
d957c4d3fa i386: Compile rtld-*.os with -mno-sse -mno-mmx -mfpmath=387
Compile i386 rtld-*.os with -mno-sse -mno-mmx -mfpmath=387 so that no
code in ld.so uses mm/xmm/ymm/zmm registers on i386 since the first 3
mm/xmm/ymm/zmm registers are used to pass vector parameters which must
be preserved.

	* sysdeps/i386/Makefile (rtld-CFLAGS): New.
	[subdir == elf] (CFLAGS-.os): Replace -mno-sse -mno-mmx
	-mfpmath=387 with $(rtld-CFLAGS).
	[subdir != elf] (CFLAGS-.os): Compile rtld-*.os with
	$(rtld-CFLAGS).
2016-07-18 15:16:24 -07:00
H.J. Lu
e15eaa8f33 Regenerate i686 libm-test-ulps with GCC 6.1 at -O3 [BZ #20347]
This fixes with GCC 6.1 and -O3 on i686:

Failure: Test: j0_downward (0xap+0)
Result:
 is:         -2.45935813e-01  -0x1.f7ad32p-3
 should be:  -2.45935768e-01  -0x1.f7ad2cp-3
 difference:  4.47034835e-08   0x1.800000p-25
 ulp       :  3.0000
 max.ulp   :  2.0000
Maximal error of `j0_downward'
 is      : 3 ulp
 accepted: 2 ulp

	[BZ #20347]
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Regenerated.
2016-07-13 08:02:10 -07:00
Aurelien Jarno
6a40d8df0c i686/multiarch: Regenerate ulps
This comes from running “make regen-ulps” on AMD Opteron 6272 CPUs.

Changelog:
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Regenerated.
2016-06-30 00:31:11 +02:00
Joseph Myers
30dcf959d2 Avoid "inexact" exceptions in i386/x86_64 trunc functions (bug 15479).
As discussed in
<https://sourceware.org/ml/libc-alpha/2016-05/msg00577.html>, TS
18661-1 disallows ceil, floor, round and trunc functions from raising
the "inexact" exception, in accordance with general IEEE 754 semantics
for when that exception is raised.  Fixing this for x87 floating point
is more complicated than for the other versions of these functions,
because they use the frndint instruction that raises "inexact" and
this can only be avoided by saving and restoring the whole
floating-point environment.

As I noted in
<https://sourceware.org/ml/libc-alpha/2016-06/msg00128.html>, I have
now implemented a GCC option -fno-fp-int-builtin-inexact for GCC 7,
such that GCC will inline these functions on x86, without caring about
"inexact", when the default -ffp-int-builtin-inexact is in effect.
This allows users to get optimized code depending on the options they
pass to the compiler, while making the out-of-line functions follow TS
18661-1 semantics and avoid "inexact".

This patch duly fixes the out-of-line trunc function implementations
to avoid "inexact", in the same way as the nearbyint implementations.

I do not know how the performance of implementations such as these
based on saving the environment and changing the rounding mode
temporarily compares to that of the C versions or SSE 4.1 versions (of
course, for 32-bit x86 SSE implementations still need to get the
return value in an x87 register); it's entirely possible other
implementations could be faster in some cases.

Tested for x86_64 and x86.

	[BZ #15479]
	* sysdeps/i386/fpu/s_trunc.S (__trunc): Save and restore
	floating-point environment rather than just control word.
	* sysdeps/i386/fpu/s_truncf.S (__truncf): Likewise.
	* sysdeps/i386/fpu/s_truncl.S (__truncl): Save and restore
	floating-point environment, with "invalid" exceptions merged in,
	rather than just control word.
	* sysdeps/x86_64/fpu/s_truncl.S (__truncl): Likewise.
	* math/libm-test.inc (trunc_test_data): Do not allow spurious
	"inexact" exceptions.
2016-06-27 17:26:52 +00:00
Joseph Myers
623629de06 Avoid "inexact" exceptions in i386/x86_64 floor functions (bug 15479).
As discussed in
<https://sourceware.org/ml/libc-alpha/2016-05/msg00577.html>, TS
18661-1 disallows ceil, floor, round and trunc functions from raising
the "inexact" exception, in accordance with general IEEE 754 semantics
for when that exception is raised.  Fixing this for x87 floating point
is more complicated than for the other versions of these functions,
because they use the frndint instruction that raises "inexact" and
this can only be avoided by saving and restoring the whole
floating-point environment.

As I noted in
<https://sourceware.org/ml/libc-alpha/2016-06/msg00128.html>, I have
now implemented a GCC option -fno-fp-int-builtin-inexact for GCC 7,
such that GCC will inline these functions on x86, without caring about
"inexact", when the default -ffp-int-builtin-inexact is in effect.
This allows users to get optimized code depending on the options they
pass to the compiler, while making the out-of-line functions follow TS
18661-1 semantics and avoid "inexact".

This patch duly fixes the out-of-line floor function implementations
to avoid "inexact", in the same way as the nearbyint implementations.

I do not know how the performance of implementations such as these
based on saving the environment and changing the rounding mode
temporarily compares to that of the C versions or SSE 4.1 versions (of
course, for 32-bit x86 SSE implementations still need to get the
return value in an x87 register); it's entirely possible other
implementations could be faster in some cases.

Tested for x86_64 and x86.

	[BZ #15479]
	* sysdeps/i386/fpu/s_floor.S (__floor): Save and restore
	floating-point environment rather than just control word.
	* sysdeps/i386/fpu/s_floorf.S (__floorf): Likewise.
	* sysdeps/i386/fpu/s_floorl.S (__floorl): Save and restore
	floating-point environment, with "invalid" exceptions merged in,
	rather than just control word.
	* sysdeps/x86_64/fpu/s_floorl.S (__floorl): Likewise.
	* math/libm-test.inc (floor_test_data): Do not allow spurious
	"inexact" exceptions.
2016-06-27 17:25:47 +00:00
Joseph Myers
26b0bf9600 Avoid "inexact" exceptions in i386/x86_64 ceil functions (bug 15479).
As discussed in
<https://sourceware.org/ml/libc-alpha/2016-05/msg00577.html>, TS
18661-1 disallows ceil, floor, round and trunc functions from raising
the "inexact" exception, in accordance with general IEEE 754 semantics
for when that exception is raised.  Fixing this for x87 floating point
is more complicated than for the other versions of these functions,
because they use the frndint instruction that raises "inexact" and
this can only be avoided by saving and restoring the whole
floating-point environment.

As I noted in
<https://sourceware.org/ml/libc-alpha/2016-06/msg00128.html>, I have
now implemented a GCC option -fno-fp-int-builtin-inexact for GCC 7,
such that GCC will inline these functions on x86, without caring about
"inexact", when the default -ffp-int-builtin-inexact is in effect.
This allows users to get optimized code depending on the options they
pass to the compiler, while making the out-of-line functions follow TS
18661-1 semantics and avoid "inexact".

This patch duly fixes the out-of-line ceil function implementations to
avoid "inexact", in the same way as the nearbyint implementations.

I do not know how the performance of implementations such as these
based on saving the environment and changing the rounding mode
temporarily compares to that of the C versions or SSE 4.1 versions (of
course, for 32-bit x86 SSE implementations still need to get the
return value in an x87 register); it's entirely possible other
implementations could be faster in some cases.

Tested for x86_64 and x86.

	[BZ #15479]
	* sysdeps/i386/fpu/s_ceil.S (__ceil): Save and restore
	floating-point environment rather than just control word.
	* sysdeps/i386/fpu/s_ceilf.S (__ceilf): Likewise.
	* sysdeps/i386/fpu/s_ceill.S (__ceill): Save and restore
	floating-point environment, with "invalid" exceptions merged in,
	rather than just control word.
	* sysdeps/x86_64/fpu/s_ceill.S (__ceill): Likewise.
	* math/libm-test.inc (ceil_test_data): Do not allow spurious
	"inexact" exceptions.
2016-06-27 17:24:30 +00:00
Joseph Myers
40244be372 Fix i386/x86_64 scalbl with sNaN input (bug 20296).
The x86_64 and i386 versions of scalbl return sNaN for some cases of
sNaN input and are missing "invalid" exceptions for other cases.  This
results from overly complicated code that either returns a NaN input,
or discards both inputs when one is NaN and loads a NaN from memory.
This patch fixes this by simplifying the code to add the arguments
when either one is NaN.

Tested for x86_64 and x86.

	[BZ #20296]
	* sysdeps/i386/fpu/e_scalbl.S (__ieee754_scalbl): Add arguments
	when either argument is a NaN.
	* sysdeps/x86_64/fpu/e_scalbl.S (__ieee754_scalbl): Likewise.
	* math/libm-test.inc (scalb_test_data): Add sNaN tests.
2016-06-23 22:17:41 +00:00
Joseph Myers
4e9bf327ad Simplify x86 nearbyint functions.
The i386 implementations of nearbyint functions, and x86_64
nearbyintl, contain code to mask the "inexact" exception.  However,
the fnstenv instruction has the effect of masking all exceptions, so
this masking code has been redundant since fnstenv was added to those
implementations (by commit 846d9a4a3acdb4939ca7bf6aed48f9f6f26911be;
commit 71d1b0166b added the test
math/test-nearbyint-except-2.c that verifies these functions do work
when called with "inexact" traps enabled); this patch removes the
redundant code.

Tested for x86_64 and x86.

	* sysdeps/i386/fpu/s_nearbyint.S (__nearbyint): Do not mask
	"inexact" exceptions after fnstenv.
	* sysdeps/i386/fpu/s_nearbyintf.S (__nearbyintf): Likewise.
	* sysdeps/i386/fpu/s_nearbyintl.S (__nearbyintl): Likewise.
	* sysdeps/x86_64/fpu/s_nearbyintl.S (__nearbyintl): Likewise.
2016-06-22 15:40:30 +00:00
Florian Weimer
aca1daef29 elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h>
Identical definitions of dtv_t and TLS_DTV_UNALLOCATED were
repeated for all architectures using DTVs.
2016-06-20 14:31:40 +02:00
Joseph Myers
228a78c21b Fix i386 fdim double rounding (bug 20255).
fdim suffers from double rounding on i386 because subtracting two
double values can produce an inexact long double value exactly half
way between two double values.  This patch fixes this by creating an
i386-specific version of fdim - C, based on the generic version,
unlike the previous .S version - which sets the x87 precision control
to double precision for the subtraction and then restores it
afterwards.  As noted in the comment added, there are no issues of
double rounding for subnormals (a case that setting precision control
does not address) because subtraction cannot produce an inexact result
in the subnormal range.

Tested for x86_64 and x86.

	[BZ #20255]
	* sysdeps/i386/fpu/s_fdim.c: New file.  Based on math/s_fdim.c.
	* math/libm-test.inc (fdim_test_data): Add another test.
2016-06-14 16:41:50 +00:00
Joseph Myers
f4015c8a86 Use generic fdim on more architectures (bug 6796, bug 20255, bug 20256).
Some architectures have their own versions of fdim functions, which
are missing errno setting (bug 6796) and may also return sNaN instead
of qNaN for sNaN input, in the case of the x86 / x86_64 long double
versions (bug 20256).

These versions are not actually doing anything that a compiler
couldn't generate, just straightforward comparisons / arithmetic (and,
in the x86 / x86_64 case, testing for NaNs with fxam, which isn't
actually needed once you use an unordered comparison and let the NaNs
pass through the same subtraction as non-NaN inputs).  This patch
removes the x86 / x86_64 / powerpc versions, so that those
architectures use the generic C versions, which correctly handle
setting errno and deal properly with sNaN inputs.  This seems better
than dealing with setting errno in lots of .S versions.

The i386 versions also return results with excess range and precision,
which is not appropriate for a function exactly defined by reference
to IEEE operations.  For errno setting to work correctly on overflow,
it's necessary to remove excess range with math_narrow_eval, which
this patch duly does in the float and double versions so that the
tests can reliably pass on x86.  For float, this avoids any double
rounding issues as the long double precision is more than twice that
of float.  For double, double rounding issues will need to be
addressed separately, so this patch does not fully fix bug 20255.

Tested for x86_64, x86 and powerpc.

	[BZ #6796]
	[BZ #20255]
	[BZ #20256]
	* math/s_fdim.c: Include <math_private.h>.
	(__fdim): Use math_narrow_eval on result.
	* math/s_fdimf.c: Include <math_private.h>.
	(__fdimf): Use math_narrow_eval on result.
	* sysdeps/i386/fpu/s_fdim.S: Remove file.
	* sysdeps/i386/fpu/s_fdimf.S: Likewise.
	* sysdeps/i386/fpu/s_fdiml.S: Likewise.
	* sysdeps/i386/i686/fpu/s_fdim.S: Likewise.
	* sysdeps/i386/i686/fpu/s_fdimf.S: Likewise.
	* sysdeps/i386/i686/fpu/s_fdiml.S: Likewise.
	* sysdeps/powerpc/fpu/s_fdim.c: Likewise.
	* sysdeps/powerpc/fpu/s_fdimf.c: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/s_fdim.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_fdim.c: Likewise.
	* sysdeps/x86_64/fpu/s_fdiml.S: Likewise.
	* math/libm-test.inc (fdim_test_data): Expect errno setting on
	overflow.  Add sNaN tests.
2016-06-14 16:04:19 +00:00
Joseph Myers
88283451b2 Fix frexp (NaN) (bug 20250).
Various implementations of frexp functions return sNaN for sNaN
input.  This patch fixes them to add such arguments to themselves so
that qNaN is returned.

Tested for x86_64, x86, mips64 and powerpc.

	[BZ #20250]
	* sysdeps/i386/fpu/s_frexpl.S (__frexpl): Add non-finite input to
	itself.
	* sysdeps/ieee754/dbl-64/s_frexp.c (__frexp): Add non-finite or
	zero input to itself.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_frexp.c (__frexp):
	Likewise.
	* sysdeps/ieee754/flt-32/s_frexpf.c (__frexpf): Likewise.
	* sysdeps/ieee754/ldbl-128/s_frexpl.c (__frexpl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_frexpl.c (__frexpl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_frexpl.c (__frexpl): Likewise.
	* math/libm-test.inc (frexp_test_data): Add sNaN tests.
2016-06-13 17:27:19 +00:00
Joseph Myers
f00faa4a43 Fix i386/x86_64 log2l (sNaN) (bug 20235).
The i386/x86_64 versions of log2l return sNaN for sNaN input.  This
patch fixes them to add NaN inputs to themselves so that qNaN is
returned in this case.

Tested for x86_64 and x86.

	[BZ #20235]
	* sysdeps/i386/fpu/e_log2l.S (__ieee754_log2l): Add NaN input to
	itself.
	* sysdeps/x86_64/fpu/e_log2l.S (__ieee754_log2l): Likewise.
	* math/libm-test.inc (log2_test_data): Add sNaN tests.
2016-06-09 18:04:30 +00:00
Joseph Myers
8c010e2f71 Fix i386/x86_64 log1pl (sNaN) (bug 20229).
The i386/x86_64 versions of log1pl return sNaN for sNaN input.  This
patch fixes them to add a NaN input to itself so that qNaN is returned
in this case.

Tested for x86_64 and x86.

	[BZ #20229]
	* sysdeps/i386/fpu/s_log1pl.S (__log1pl): Add NaN input to itself.
	* sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Likewise.
	* math/libm-test.inc (log1p_test_data): Add sNaN tests.
2016-06-08 23:11:42 +00:00
Joseph Myers
09096b3615 Fix i386/x86_64 log10l (sNaN) (bug 20228).
The i386/x86_64 versions of log10l return sNaN for sNaN input.  This
patch fixes them to add a NaN input to itself so that qNaN is returned
in this case.

Tested for x86_64 and x86.

	[BZ #20228]
	* sysdeps/i386/fpu/e_log10l.S (__ieee754_log10l): Add NaN input to
	itself.
	* sysdeps/x86_64/fpu/e_log10l.S (__ieee754_log10l): Likewise.
	* math/libm-test.inc (log10_test_data): Add sNaN tests.
2016-06-08 22:59:18 +00:00
Joseph Myers
df179d8808 Fix i386/x86_64 logl (sNaN) (bug 20227).
The i386/x86_64 versions of logl return sNaN for sNaN input.  This
patch fixes them to add a NaN input to itself so that qNaN is returned
in this case.

Tested for x86_64 and x86 (including a build for i586 to cover the
non-i686 logl version).

	[BZ #20227]
	* sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Add NaN input to
	itself.
	* sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise.
	* sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise.
	* math/libm-test.inc (log_test_data): Add sNaN tests.
2016-06-08 22:24:06 +00:00
Joseph Myers
9bd3ef8e19 Fix i386/x86_64 expl, exp10l, expm1l for sNaN input (bug 20226).
The i386 and x86_64 implementations of expl, exp10l and expm1l (code
shared between the functions) return sNaN for sNaN input.  This patch
fixes them to add NaN inputs to themselves so that qNaN is returned in
this case.

Tested for x86_64 and x86.

	[BZ #20226]
	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL): Add NaN argument to
	itself.
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL): Likewise.
	* math/libm-test.inc (exp_test_data): Add sNaN tests.
	(exp10_test_data): Likewise.
	(expm1_test_data): Likewise.
2016-06-08 21:55:06 +00:00
Joseph Myers
40720ec9f9 Fix i386 cbrtl (sNaN) (bug 20224).
The i386 version of cbrtl returns sNaN (without raising any
exceptions) for sNaN input.  This patch fixes it to add non-finite
arguments to themselves (the code path in question is also reached for
zero arguments, for which adding them to themselves is also harmless),
so that "invalid" is raised and qNaN returned.

Tested for x86_64 and x86.

	[BZ #20224]
	* sysdeps/i386/fpu/s_cbrtl.S (__cbrtl): Add non-finite or zero
	argument to itself.
	* math/libm-test.inc (cbrt_test_data): Add sNaN tests.
2016-06-08 21:02:40 +00:00
Joseph Myers
8fa8a330f9 Fix i386 atanhl (sNaN) (bug 20219).
The i386 version of atanhl returns sNaN for sNaN input.  This patch
fixes it to add NaN arguments to themselves so it returns qNaN in this
case.

Tested for x86_64 and x86.

	[BZ #20219]
	* sysdeps/i386/fpu/e_atanhl.S (__ieee754_atanhl): Add NaN argument
	to itself.
	* math/libm-test.inc (atanh_test_data): Add sNaN tests.
2016-06-07 23:08:32 +00:00
Joseph Myers
c23805a95d Fix i386 asinhl (sNaN) (bug 20218).
The i386 version of asinhl returns sNaN (without raising any
exceptions) for sNaN input.  This patch fixes it to add non-finite
arguments to themselves, so that "invalid" is raised and qNaN
returned.

Tested for x86_64 and x86.

	[BZ #20218]
	* sysdeps/i386/fpu/s_asinhl.S (__asinhl): Add non-finite argument
	to itself.
	* math/libm-test.inc (asinh_test_data): Add sNaN tests.
2016-06-07 22:54:58 +00:00
Joseph Myers
8cbd1453ec Fix x86/x86_64 nextafterl incrementing negative subnormals (bug 20205).
The x86 / x86_64 implementation of nextafterl (also used for
nexttowardl) produces incorrect results (NaNs) when negative
subnormals, the low 32 bits of whose mantissa are zero, are
incremented towards zero.  This patch fixes this by disabling the
logic to decrement the exponent in that case.

Tested for x86_64 and x86.

	[BZ #20205]
	* sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Do not adjust
	exponent when incrementing negative subnormal with low mantissa
	word zero.
	* math/libm-test.inc (nextafter_test_data) [TEST_COND_intel96]:
	Add another test.
2016-06-03 21:30:12 +00:00
H.J. Lu
4facca0b0e Call init_cpu_features only if SHARED is defined
In static executable, since init_cpu_features is called early from
__libc_start_main, there is no need to call it again in dl_platform_init.

	[BZ #20072]
	* sysdeps/i386/dl-machine.h (dl_platform_init): Call
	init_cpu_features only if SHARED is defined.
	* sysdeps/x86_64/dl-machine.h (dl_platform_init): Likewise.
2016-05-13 08:29:33 -07:00
H.J. Lu
2a1f15b1a9 Remove x86 ifunc-defines.sym and rtld-global-offsets.sym
Merge x86 ifunc-defines.sym with x86 cpu-features-offsets.sym.  Remove
x86 ifunc-defines.sym and rtld-global-offsets.sym.  No code changes on
i686 and x86-64.

	* sysdeps/i386/i686/multiarch/Makefile (gen-as-const-headers):
	Remove ifunc-defines.sym.
	* sysdeps/x86_64/multiarch/Makefile (gen-as-const-headers):
	Likewise.
	* sysdeps/i386/i686/multiarch/ifunc-defines.sym: Removed.
	* sysdeps/x86/rtld-global-offsets.sym: Likewise.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym: Likewise.
	* sysdeps/x86/Makefile (gen-as-const-headers): Remove
	rtld-global-offsets.sym.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym: Merged with ...
	* sysdeps/x86/cpu-features-offsets.sym: This.
	* sysdeps/x86/cpu-features.h: Include <cpu-features-offsets.h>
	instead of <ifunc-defines.h> and <rtld-global-offsets.h>.
2016-05-11 05:51:39 -07:00
H.J. Lu
a9558b49b3 Move sysdeps/x86_64/cacheinfo.c to sysdeps/x86
Move sysdeps/x86_64/cacheinfo.c to sysdeps/x86.  No code changes on x86
and x86_64.

	* sysdeps/i386/cacheinfo.c: Include <sysdeps/x86/cacheinfo.c>
	instead of <sysdeps/x86_64/cacheinfo.c>.
	* sysdeps/x86_64/cacheinfo.c: Moved to ...
	* sysdeps/x86/cacheinfo.c: Here.
2016-05-08 08:49:18 -07:00
Khem Raj
1a5d01e79e When disabling SSE, make sure -fpmath is not set to use SSE either
This fixes errors when we inject sse options through CFLAGS and now
that we have -Werror turned on by default this warning turns into an
error on x86:

$ gcc -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -x c /dev/null -S -mno-sse -mno-mmx
/dev/null:1:0: warning: SSE instruction set disabled, using 387 arithmetics

Where as:

$ gcc -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -x c /dev/null -S -mno-sse -mno-mmx -mfpmath=387

Generates no warnings.
2016-04-09 22:14:24 -04:00
Mike Frysinger
b2d4456b33 configure: fix test == usage
POSIX defines the = operator, but not ==.  Fix the few places where we
incorrectly used ==.
2016-04-09 20:05:13 -04:00
Wilco Dijkstra
d3496c9f4f Improve generic strcspn performance
Improve strcspn performance using a much faster algorithm.  It is kept simple
so it works well on most targets.  It is generally at least 10 times faster
than the existing implementation on bench-strcspn on a few AArch64
implementations, and for some tests 100 times as fast (repeatedly calling
strchr on a small string is extremely slow...).

In fact the string/bits/string2.h inlines make no longer sense, as GCC
already uses strlen if reject is an empty string, strchrnul is 5 times as
fast as __strcspn_c1, while __strcspn_c2 and __strcspn_c3 are slower than
the strcspn main loop for large strings (though reject length 2-4 could be
special cased in the future to gain even more performance).

Tested on x86_64, i686, and aarch64.

	* string/Version (libc): Add GLIBC_2.24.
	* string/strcspn.c (strcspn): Rewrite function.
	* string/bits/string2.h (strcspn): Use __builtin_strcspn.
	(__strcspn_c1): Remove inline function.
	(__strcspn_c2): Likewise.
	(__strcspn_c3): Likewise.
	* string/string-inline.c
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strcspn_c1): Add
	compatibility symbol.
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strcspn_c2):
	Likewise.
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strcspn_c3):
	Likewise.
	* sysdeps/i386/string-inlines.c: Include generic string-inlines.c.
2016-04-01 10:44:40 -03:00
Joseph Myers
c898991d8b Fix x86_64 / x86 powl inaccuracy for integer exponents (bug 19848).
Bug 19848 reports cases where powl on x86 / x86_64 has error
accumulation, for small integer exponents, larger than permitted by
glibc's accuracy goals, at least in some rounding modes.  This patch
further restricts the exponent range for which the
small-integer-exponent logic is used to limit the possible error
accumulation.

Tested for x86_64 and x86 and ulps updated accordingly.

	[BZ #19848]
	* sysdeps/i386/fpu/e_powl.S (p3): Rename to p2 and change value
	from 8 to 4.
	(__ieee754_powl): Compare integer exponent against 4 not 8.
	* sysdeps/x86_64/fpu/e_powl.S (p3): Rename to p2 and change value
	from 8 to 4.
	(__ieee754_powl): Compare integer exponent against 4 not 8.
	* math/auto-libm-test-in: Add more tests of pow.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2016-03-24 01:32:52 +00:00
Carlos O'Donell
b4f518ecfa Fix building glibc master with NDEBUG and --with-cpu.
When building on i686, x86_64, and arm, and with NDEBUG, or --with-cpu
there are various variables and functions which are unused based on
these settings.

This patch marks all such variables with __attribute__((unused)) to
avoid the compiler warnings when building with the aformentioned
options.
2016-03-15 23:23:24 -04:00
H.J. Lu
4e940b2f4b Use HAS_ARCH_FEATURE with Fast_Rep_String
HAS_ARCH_FEATURE, not HAS_CPU_FEATURE, should be used with
Fast_Rep_String.

	[BZ #19762]
	* sysdeps/i386/i686/multiarch/bcopy.S (bcopy): Use
	HAS_ARCH_FEATURE with Fast_Rep_String.
	* sysdeps/i386/i686/multiarch/bzero.S (__bzero): Likewise.
	* sysdeps/i386/i686/multiarch/memcpy.S (memcpy): Likewise.
	* sysdeps/i386/i686/multiarch/memcpy_chk.S (__memcpy_chk):
	Likewise.
	* sysdeps/i386/i686/multiarch/memmove_chk.S (__memmove_chk):
	Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy.S (__mempcpy): Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy_chk.S (__mempcpy_chk):
	Likewise.
	* sysdeps/i386/i686/multiarch/memset.S (memset): Likewise.
	* sysdeps/i386/i686/multiarch/memset_chk.S (__memset_chk):
	Likewise.
2016-03-06 08:23:51 -08:00
Marko Myllynen
48d0341cdd Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
Joseph Myers
f7a9f785e5 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Aurelien Jarno
5537f466d6 i386: move ULPs to i686/multiarch and regenerate new ones for i386
The i386 ULPs are actually the i686/multiarch ones. The i686/multiarch
float ULPs are more precise as the SSE2 version (when available) uses
double for the cosf and sinf functions.

On the other hand the higher precision of the x86 FPU improves the
precision for a few other math functions.

	* sysdeps/i386/fpu/libm-test-ulps: Move to ....
	* sysdeps/i386/i686/multiarch/fpu/libm-test-ulps: ...here.
	* sysdeps/i386/fpu/libm-test-ulps: Regenerate.
2015-12-20 16:36:45 +01:00
Samuel Thibault
6e45e6ef4d Fix hurd build with hidden support
* hurd/sigunwind.c (_hurdsig_longjmp_from_handler): Destroy reply port
	of interrupted RPC instead of restoring it.

	* sysdeps/i386/setjmp.S (__sigsetjmp): Add hidden_def.
	* sysdeps/mach/hurd/accept4.c (__libc_accept4): Remove
	libc_hidden_def.
	* sysdeps/mach/hurd/dl-sysdep.c (__libc_stack_end): Add relro
	attribute, define rtld_hidden_data_def.
	* sysdeps/mach/hurd/fxstatat64.c (__fxstatat64): Add libc_hidden_def.
	* sysdeps/mach/hurd/if_index.c (__if_freenameindex): Add
	libc_hidden_def.
	(if_freenameindex): Add libc_hidden_weak.
	(if_nameindex): Add libc_hidden_weak.
	* sysdeps/mach/hurd/open.c (_open64): Rename libc_hidden_weak into
	__open64.
	* sysdeps/mach/hurd/sigwait.c (__sigwait): Add libc_hidden_def.
	* sysdeps/mach/hurd/xmknodat.c (__xmknodat): Add libc_hidden_def.
	* sysdeps/mach/nanosleep.c: Include <time.h>
	(__nanosleep): Rename to __libc_nanosleep.
	(__nanosleep): Add weak_alias.
	(nanosleep): Update alias.
	* sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not define.
	* sysdeps/mach/hurd/configure: Regenerate.
2015-11-25 02:35:18 +01:00
Joseph Myers
2d2c271aea Fix math_private.h multiple include guards.
Various math_private.h headers are guarded by "#ifndef
_MATH_PRIVATE_H", but never define the macro.  Nothing else defines
the macro either (the generic math_private.h that they include defines
a different macro, _MATH_PRIVATE_H_), so those guards are ineffective.

With the recent inclusion of s_sin.c in s_sincos.c, this breaks the
build for MIPS, since the build of s_sincos.c ends up including
<math_private.h> twice and the MIPS version defines inline functions
such as libc_feholdexcept_mips, without a separate fenv_private.h
header with its own guards such as some architectures have.

This patch fixes all the problem headers to use architecture-specific
guard macro names, and to define those macros in the headers they
guard, just as some architectures already do.

Tested for x86 (testsuite, and that installed shared libraries are
unchanged by the patch), and for mips64 (that it fixes the build).

	* sysdeps/arm/math_private.h [!_MATH_PRIVATE_H]: Change guard to
	[!ARM_MATH_PRIVATE_H].
	[!ARM_MATH_PRIVATE_H] (ARM_MATH_PRIVATE_H): Define macro.
	* sysdeps/hppa/math_private.h [!_MATH_PRIVATE_H]: Change guard to
	[!HPPA_MATH_PRIVATE_H].
	[!HPPA_MATH_PRIVATE_H] (HPPA_MATH_PRIVATE_H): Define macro.
	* sysdeps/i386/fpu/math_private.h [!_MATH_PRIVATE_H]: Change guard
	to [!I386_MATH_PRIVATE_H].
	[!I386_MATH_PRIVATE_H] (I386_MATH_PRIVATE_H): Define macro.
	* sysdeps/m68k/m680x0/fpu/math_private.h [!_MATH_PRIVATE_H]:
	Change guard to [!M68K_MATH_PRIVATE_H].
	[!M68K_MATH_PRIVATE_H] (M68K_MATH_PRIVATE_H): Define macro.
	* sysdeps/microblaze/math_private.h [!_MATH_PRIVATE_H]: Change
	guard to [!MICROBLAZE_MATH_PRIVATE_H].
	[!MICROBLAZE_MATH_PRIVATE_H] (MICROBLAZE_MATH_PRIVATE_H): Define
	macro.
	* sysdeps/mips/math_private.h [!_MATH_PRIVATE_H]: Change guard to
	[!MIPS_MATH_PRIVATE_H].
	[!MIPS_MATH_PRIVATE_H] (MIPS_MATH_PRIVATE_H): Define macro.
	* sysdeps/nios2/math_private.h [!_MATH_PRIVATE_H]: Change guard to
	[!NIO2_MATH_PRIVATE_H].
	[!NIO2_MATH_PRIVATE_H] (NIO2_MATH_PRIVATE_H): Define macro.
	* sysdeps/tile/math_private.h [!_MATH_PRIVATE_H]: Change guard to
	[!TILE_MATH_PRIVATE_H].
	[!TILE_MATH_PRIVATE_H] (TILE_MATH_PRIVATE_H): Define macro.
2015-11-20 23:46:23 +00:00
Joseph Myers
01189b083b Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213).
For the -ffinite-math-only versions of various x86_64 and x86 log*
functions, a zero result from log* (1) is returned with incorrect sign
in round-downward mode.  This patch fixes this in a similar way to the
previous fixes for the non-*_finite versions of the functions.

Tested for x86_64 and x86 (including an i586 build), together with a
patch that will be applied separately to enable the main libm-test.inc
tests for the finite-math-only functions.

	[BZ #19213]
	* sysdeps/i386/fpu/e_log.S (__log_finite): Ensure +0 is always
	returned for argument 1.
	* sysdeps/i386/fpu/e_logf.S (__logf_finite): Likewise.
	* sysdeps/i386/fpu/e_logl.S (__logl_finite): Likewise.
	* sysdeps/i386/i686/fpu/e_logl.S (__logl_finite): Likewise.
	* sysdeps/x86_64/fpu/e_log10l.S (__log10l_finite): Likewise.
	* sysdeps/x86_64/fpu/e_log2l.S (__log2l_finite): Likewise.
	* sysdeps/x86_64/fpu/e_logl.S (__logl_finite): Likewise.
2015-11-05 21:56:31 +00:00
Joseph Myers
9f9f27248b Remove miscellaneous GCC >= 4.7 version conditionals.
This patch removes miscellaneous __GNUC_PREREQ (4, 7) conditionals
that are now dead.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

	* sysdeps/arm/atomic-machine.h
	[__GNUC_PREREQ (4, 7) && __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4]:
	Change conditional to [__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4].
	[__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 && !__GNUC_PREREQ (4, 7)]:
	Remove conditional code.
	[!__GNUC_PREREQ (4, 7) || !__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4]:
	Change conditional to [!__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4].
	* sysdeps/i386/sysdep.h [__ASSEMBLER__ && __GNUC_PREREQ (4, 7)]:
	Change conditional to [__ASSEMBLER__].
	[__ASSEMBLER__ && !__GNUC_PREREQ (4, 7)]: Remove conditional code.
	[!__ASSEMBLER__ && __GNUC_PREREQ (4, 7)]: Change conditional to
	[!__ASSEMBLER__].
	[!__ASSEMBLER__ && !__GNUC_PREREQ (4, 7)]: Remove conditional
	code.
	* sysdeps/unix/sysv/linux/sh/atomic-machine.h (rNOSP): Remove
	conditional macro definitions.
	(__arch_compare_and_exchange_val_8_acq): Use "u" instead of rNOSP.
	(__arch_compare_and_exchange_val_16_acq): Likewise.
	(__arch_compare_and_exchange_val_32_acq): Likewise.
	(atomic_exchange_and_add): Likewise.
	(atomic_add): Likewise.
	(atomic_add_negative): Likewise.
	(atomic_add_zero): Likewise.
	(atomic_bit_set): Likewise.
	(atomic_bit_test_set): Likewise.
	* sysdeps/x86_64/atomic-machine.h [__GNUC_PREREQ (4, 7)]: Make
	code unconditional.
	[!__GNUC_PREREQ (4, 7)]: Remove conditional code.
2015-11-04 21:34:36 +00:00
Joseph Myers
199a338654 Add more libm tests (scalb*, signbit, sin, sincos, sinh, sqrt, tan, tanh, tgamma, y0, y1, yn, significand).
This patch improves the libm test coverage for a few more functions.

Tested for x86_64 and x86.

	* math/auto-libm-test-in: Add more tests of sin, sincos, sinh,
	sqrt, tan, tanh, y0, y1 and yn.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (scalb_test_data): Add more tests.
	(scalbn_test_data): Likewise.
	(scalbln_test_data): Likewise.
	(signbit_test_data): Likewise.
	(sin_test_data): Likewise.
	(sincos_test_data): Likewise.
	(sinh_test_data): Likewise.
	(sqrt_test_data): Likewise.
	(tan_test_data): Likewise.
	(tanh_test_data): Likewise.
	(tgamma_test_data): Likewise.
	(y0_test_data): Likewise.
	(y1_test_data): Likewise.
	(yn_test_data): Likewise.
	(significand_test_data): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
2015-11-04 00:45:23 +00:00
Joseph Myers
85422c2acb Make nextafter, nexttoward set errno (bug 6799).
nextafter and nexttoward fail to set errno on overflow and underflow.
This patch makes them do so in cases that should include all the cases
where such errno setting is required by glibc's goals for when to set
errno (but not all cases of underflow where the result is nonzero and
so glibc's goals do not require errno setting).

Tested for x86_64, x86, mips64 and powerpc.

	[BZ #6799]
	* math/s_nextafter.c: Include <errno.h>.
	(__nextafter): Set errno on overflow and underflow.
	* math/s_nexttowardf.c: Include <errno.h>.
	(__nexttowardf): Set errno on overflow and underflow.
	* sysdeps/i386/fpu/s_nextafterl.c: Include <errno.h>.
	(__nextafterl): Set errno on overflow and underflow.
	* sysdeps/i386/fpu/s_nexttoward.c: Include <errno.h>.
	(__nexttoward): Set errno on overflow and underflow.
	* sysdeps/i386/fpu/s_nexttowardf.c: Include <errno.h>.
	(__nexttowardf): Set errno on overflow and underflow.
	* sysdeps/ieee754/flt-32/s_nextafterf.c: Include <errno.h>.
	(__nextafterf): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-128/s_nextafterl.c: Include <errno.h>.
	(__nextafterl): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-128/s_nexttoward.c: Include <errno.h>.
	(__nexttoward): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Include <errno.h>.
	(__nexttowardf): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c: Include <errno.h>.
	(__nextafterl): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c: Include <errno.h>.
	(__nexttoward): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c: Include <errno.h>.
	(__nexttowardf): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c: Include <errno.h>.
	(__nexttoward): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c: Include <errno.h>.
	(__nexttowardf): Set errno on overflow and underflow.
	* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c: Include <errno.h>.
	(__nldbl_nexttowardf): Set errno on overflow and underflow.
	* sysdeps/m68k/m680x0/fpu/s_nextafterl.c: Include <errno.h>.
	(__nextafterl): Set errno on overflow and underflow.
	* math/libm-test.inc (nextafter_test_data): Do not allow errno
	setting to be missing on overflow.  Add more tests.
	(nexttoward_test_data): Likewise.
2015-11-02 18:54:19 +00:00
Joseph Myers
91bcb95ad4 Remove cpuid.h configure tests.
There are configure tests for the cpuid.h header for x86 / x86_64.
GCC 4.3 and later install this header, so those tests are obsolete.
This patch removes them.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

	* sysdeps/i386/configure.ac (cpuid.h): Do not test for header.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure.ac (cpuid.h): Do not test for header.
	* sysdeps/x86_64/configure: Regenerated.
2015-10-29 14:43:46 +00:00
Joseph Myers
2145f97cee Handle more state in i386/x86_64 fesetenv (bug 16068).
fenv_t should include architecture-specific floating-point modes and
status flags.  i386 and x86_64 fesetenv limit which bits they use from
the x87 status and control words, when using saved state, and limit
which parts of the state they set to fixed values, when using
FE_DFL_ENV / FE_NOMASK_ENV.  The following should be included but are
excluded in at least some cases: status and masking for the "denormal
operand" exception (which isn't part of FE_ALL_EXCEPT); precision
control (explicitly mentioned in Annex F as something that counts as
part of the floating-point environment); MXCSR FZ and DAZ bits (for
FE_DFL_ENV and FE_NOMASK_ENV).  This patch arranges for this extra
state to be handled by fesetenv (and thereby by feupdateenv, which
calls fesetenv).

(Note that glibc functions using floating point are not generally
expected to work correctly with non-default values of this state,
especially precision control, but it is still logically part of the
floating-point environment and should be handled as such by fesetenv.
Changes to the state relating to subnormals ought generally to work
with libm functions when the arguments aren't subnormal and neither
are the expected results; that's a consequence of functions avoiding
spurious internal underflows.)

A question arising from this is whether FE_NOMASK_ENV should or should
not mask the "denormal operand" exception.  I decided it should mask
that exception.  This is the status quo - previously that exception
could only be unmasked by direct manipulation of control registers
(possibly via <fpu_control.h>).  In addition, it means that use of
FE_NOMASK_ENV leaves a floating-point environment the same as could be
obtained by fesetenv (FE_DFL_ENV); feenableexcept (FE_ALL_EXCEPT);,
rather than an environment in which an exception is unmasked that
could only be masked again by using fesetenv with FE_DFL_ENV (or a
previously saved environment) - this exception not being usable with
other <fenv.h> functions because it's outside FE_ALL_EXCEPT.

Tested for x86_64 and x86.

	[BZ #16068]
	* sysdeps/i386/fpu/fesetenv.c: Include <fpu_control.h>.
	(FE_ALL_EXCEPT_X86): New macro.
	(__fesetenv): Use FE_ALL_EXCEPT_X86 in most places instead of
	FE_ALL_EXCEPT.  Ensure precision control is included in
	floating-point state.  Ensure that FE_DFL_ENV and FE_NOMASK_ENV
	handle "denormal operand exception" and clear FZ and DAZ bits.
	* sysdeps/x86_64/fpu/fesetenv.c: Include <fpu_control.h>.
	(FE_ALL_EXCEPT_X86): New macro.
	(__fesetenv): Use FE_ALL_EXCEPT_X86 in most places instead of
	FE_ALL_EXCEPT.  Ensure precision control is included in
	floating-point state.  Ensure that FE_DFL_ENV and FE_NOMASK_ENV
	handle "denormal operand exception" and clear FZ and DAZ bits.
	* sysdeps/x86/fpu/test-fenv-sse-2.c: New file.
	* sysdeps/x86/fpu/test-fenv-x87.c: Likewise.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
	test-fenv-x87 and test-fenv-sse-2.
	[$(subdir) = math] (CFLAGS-test-fenv-sse-2.c): New variable.
2015-10-28 22:58:29 +00:00
Joseph Myers
0b9af583a5 Fix i386/x86_64 fesetenv SSE exception clearing (bug 19181).
The i386 and x86_64 versions of fesetenv, when called with FE_DFL_ENV
or FE_NOMASK_ENV as argument, do not clear SSE exceptions raised in
MXCSR.  These arguments should, like other fenv_t values, represent
the whole of the floating-point state, so such exceptions should be
cleared; this patch adds the required clearing.  (Discovered while
working on bug 16068.)

Tested for x86_64 and x86.

	[BZ #19181]
	* sysdeps/i386/fpu/fesetenv.c (__fesetenv): Clear already-raised
	SSE exceptions when argument is FE_DFL_ENV or FE_NOMASK_ENV.
	* sysdeps/x86_64/fpu/fesetenv.c (__fesetenv): Likewise.
	* math/test-fenv-clear-main.c: New file.
	* math/test-fenv-clear.c: Likewise.
	* math/Makefile (tests): Add test-fenv-clear.
	* sysdeps/x86/fpu/test-fenv-clear-sse.c: New file.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
	test-fenv-clear-sse.
	[$(subdir) = math] (CFLAGS-test-fenv-clear-sse.c): New variable.
2015-10-28 18:50:20 +00:00
Joseph Myers
c871b9b096 Remove -mavx2 configure tests.
There are configure tests for the -mavx2 compiler option.  AVX2
support was added in GCC 4.7, so these tests are now obsolete; this
patch removes them.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

	* sysdeps/i386/configure.ac (libc_cv_cc_avx2): Remove configure
	test.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure.ac (libc_cv_cc_avx2): Remove configure
	test.
	* sysdeps/x86_64/configure: Regenerated.
	* config.h.in (HAVE_AVX2_SUPPORT): Remove #undef.
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	memset-avx2 unconditionally instead of conditionally on
	[$(config-cflags-avx2) = yes].
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list) [HAVE_AVX2_SUPPORT]: Make code
	unconditional.
	* sysdeps/x86_64/multiarch/memset.S [HAVE_AVX2_SUPPORT]: Likewise.
	* sysdeps/x86_64/multiarch/memset_chk.S
	[IS_IN (libc) && SHARED && HAVE_AVX2_SUPPORT]: Change conditional
	to [IS_IN (libc) && SHARED].
2015-10-28 13:29:03 +00:00
Joseph Myers
846d9a4a3a Fix i386 / x86_64 nearbyint exception clearing (bug 15491).
The implementations of nearbyint functions using x87 floating point
(i386 all versions, x86_64 long double only) use the fclex
instruction, which clears any exceptions that were raised before the
function was called.  These functions must not clear exceptions that
were raised before they were called.

This patch fixes these functions to save and restore the whole
floating-point environment (fnstenv / fldenv) as the way of avoiding
raising "inexact" (recall that there isn't an x87 instruction for
loading just the status word, so the whole environment has to be saved
and loaded instead - the code already saved and loaded the control
word, which is now obtained from the saved environment after this
patch, to disable traps on "inexact").  In the case of the long double
functions, any "invalid" exception from frndint (applied to a
signaling NaN) needs merging into the saved state; this issue doesn't
apply to the float and double functions because that exception would
have been raised when the argument is loaded, before the environment
is saved.

	[BZ #15491]
	* sysdeps/i386/fpu/s_nearbyint.S (__nearbyint): Save and restore
	floating-point environment instead of clearing all exceptions.
	* sysdeps/i386/fpu/s_nearbyintf.S (__nearbyintf): Likewise.
	* sysdeps/i386/fpu/s_nearbyintl.S (__nearbyintl): Likewise,
	merging in "invalid" exceptions from frndint.
	* sysdeps/x86_64/fpu/s_nearbyintl.S (__nearbyintl): Likewise.
	* math/test-nearbyint-except.c: New file.
	* math/Makefile (tests): Add test-nearbyint-except.
2015-10-22 23:14:55 +00:00
Joseph Myers
bd2260a206 Convert 231 sysdeps function definitions to prototype style.
This mostly automatically-generated patch converts 231 sysdeps
function definitions in glibc from old-style K&R to prototype-style.

For __aio_sigqueue and __gai_sigqueue I had to add internal_function
to the definitions as noted by Florian in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00595.html> to keep
the functions compiling on x86 after conversion to prototype
definitions.  Otherwise, the patch is automatically generated with all
the same exclusions and caveats as in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00594.html> except
that it's a patch for sysdeps files.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).  Also tested for arm,
mips64 and powerpc32 that installed stripped shared libraries are
unchanged by the patch.

	* sysdeps/arm/backtrace.c (__backtrace): Convert to
	prototype-style function definition.
	* sysdeps/i386/backtrace.c (__backtrace): Likewise.
	* sysdeps/i386/ffs.c (__ffs): Likewise.
	* sysdeps/i386/i686/ffs.c (__ffs): Likewise.
	* sysdeps/ia64/nptl/pthread_spin_lock.c (pthread_spin_lock):
	Likewise.
	* sysdeps/ia64/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l):
	Likewise.
	* sysdeps/m68k/ffs.c (__ffs): Likewise.
	* sysdeps/m68k/m680x0/fpu/e_acos.c (FUNC): Likewise.
	* sysdeps/m68k/m680x0/fpu/e_fmod.c (FUNC): Likewise.
	* sysdeps/mach/adjtime.c (__adjtime): Likewise.
	* sysdeps/mach/gettimeofday.c (__gettimeofday): Likewise.
	* sysdeps/mach/hurd/_exit.c (_exit): Likewise.
	* sysdeps/mach/hurd/access.c (__access): Likewise.
	* sysdeps/mach/hurd/adjtime.c (__adjtime): Likewise.
	* sysdeps/mach/hurd/chdir.c (__chdir): Likewise.
	* sysdeps/mach/hurd/chmod.c (__chmod): Likewise.
	* sysdeps/mach/hurd/chown.c (__chown): Likewise.
	* sysdeps/mach/hurd/cthreads.c (cthread_keycreate): Likewise.
	(cthread_getspecific): Likewise.
	(cthread_setspecific): Likewise.
	(__libc_getspecific): Likewise.
	* sysdeps/mach/hurd/euidaccess.c (__euidaccess): Likewise.
	* sysdeps/mach/hurd/faccessat.c (faccessat): Likewise.
	* sysdeps/mach/hurd/fchdir.c (__fchdir): Likewise.
	* sysdeps/mach/hurd/fchmod.c (__fchmod): Likewise.
	* sysdeps/mach/hurd/fchmodat.c (fchmodat): Likewise.
	* sysdeps/mach/hurd/fchown.c (__fchown): Likewise.
	* sysdeps/mach/hurd/fchownat.c (fchownat): Likewise.
	* sysdeps/mach/hurd/flock.c (__flock): Likewise.
	* sysdeps/mach/hurd/fsync.c (fsync): Likewise.
	* sysdeps/mach/hurd/ftruncate.c (__ftruncate): Likewise.
	* sysdeps/mach/hurd/getgroups.c (__getgroups): Likewise.
	* sysdeps/mach/hurd/gethostname.c (__gethostname): Likewise.
	* sysdeps/mach/hurd/getitimer.c (__getitimer): Likewise.
	* sysdeps/mach/hurd/getlogin_r.c (__getlogin_r): Likewise.
	* sysdeps/mach/hurd/getpgid.c (__getpgid): Likewise.
	* sysdeps/mach/hurd/getrusage.c (__getrusage): Likewise.
	* sysdeps/mach/hurd/getsockname.c (__getsockname): Likewise.
	* sysdeps/mach/hurd/group_member.c (__group_member): Likewise.
	* sysdeps/mach/hurd/isatty.c (__isatty): Likewise.
	* sysdeps/mach/hurd/lchown.c (__lchown): Likewise.
	* sysdeps/mach/hurd/link.c (__link): Likewise.
	* sysdeps/mach/hurd/linkat.c (linkat): Likewise.
	* sysdeps/mach/hurd/listen.c (__listen): Likewise.
	* sysdeps/mach/hurd/mkdir.c (__mkdir): Likewise.
	* sysdeps/mach/hurd/mkdirat.c (mkdirat): Likewise.
	* sysdeps/mach/hurd/openat.c (__openat): Likewise.
	* sysdeps/mach/hurd/poll.c (__poll): Likewise.
	* sysdeps/mach/hurd/readlink.c (__readlink): Likewise.
	* sysdeps/mach/hurd/readlinkat.c (readlinkat): Likewise.
	* sysdeps/mach/hurd/recv.c (__recv): Likewise.
	* sysdeps/mach/hurd/rename.c (rename): Likewise.
	* sysdeps/mach/hurd/renameat.c (renameat): Likewise.
	* sysdeps/mach/hurd/revoke.c (revoke): Likewise.
	* sysdeps/mach/hurd/rewinddir.c (__rewinddir): Likewise.
	* sysdeps/mach/hurd/rmdir.c (__rmdir): Likewise.
	* sysdeps/mach/hurd/seekdir.c (seekdir): Likewise.
	* sysdeps/mach/hurd/send.c (__send): Likewise.
	* sysdeps/mach/hurd/setdomain.c (setdomainname): Likewise.
	* sysdeps/mach/hurd/setegid.c (setegid): Likewise.
	* sysdeps/mach/hurd/seteuid.c (seteuid): Likewise.
	* sysdeps/mach/hurd/setgid.c (__setgid): Likewise.
	* sysdeps/mach/hurd/setgroups.c (setgroups): Likewise.
	* sysdeps/mach/hurd/sethostid.c (sethostid): Likewise.
	* sysdeps/mach/hurd/sethostname.c (sethostname): Likewise.
	* sysdeps/mach/hurd/setlogin.c (setlogin): Likewise.
	* sysdeps/mach/hurd/setpgid.c (__setpgid): Likewise.
	* sysdeps/mach/hurd/setregid.c (__setregid): Likewise.
	* sysdeps/mach/hurd/setreuid.c (__setreuid): Likewise.
	* sysdeps/mach/hurd/settimeofday.c (__settimeofday): Likewise.
	* sysdeps/mach/hurd/setuid.c (__setuid): Likewise.
	* sysdeps/mach/hurd/shutdown.c (shutdown): Likewise.
	* sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise.
	* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
	* sysdeps/mach/hurd/sigpending.c (sigpending): Likewise.
	* sysdeps/mach/hurd/sigprocmask.c (__sigprocmask): Likewise.
	* sysdeps/mach/hurd/sigsuspend.c (__sigsuspend): Likewise.
	* sysdeps/mach/hurd/socket.c (__socket): Likewise.
	* sysdeps/mach/hurd/symlink.c (__symlink): Likewise.
	* sysdeps/mach/hurd/symlinkat.c (symlinkat): Likewise.
	* sysdeps/mach/hurd/telldir.c (telldir): Likewise.
	* sysdeps/mach/hurd/truncate.c (__truncate): Likewise.
	* sysdeps/mach/hurd/umask.c (__umask): Likewise.
	* sysdeps/mach/hurd/unlink.c (__unlink): Likewise.
	* sysdeps/mach/hurd/unlinkat.c (unlinkat): Likewise.
	* sysdeps/mips/mips64/__longjmp.c (__longjmp): Likewise.
	* sysdeps/posix/alarm.c (alarm): Likewise.
	* sysdeps/posix/cuserid.c (cuserid): Likewise.
	* sysdeps/posix/dirfd.c (dirfd): Likewise.
	* sysdeps/posix/dup.c (__dup): Likewise.
	* sysdeps/posix/dup2.c (__dup2): Likewise.
	* sysdeps/posix/euidaccess.c (euidaccess): Likewise.
	(main): Likewise.
	* sysdeps/posix/flock.c (__flock): Likewise.
	* sysdeps/posix/fpathconf.c (__fpathconf): Likewise.
	* sysdeps/posix/getcwd.c (__getcwd): Likewise.
	* sysdeps/posix/gethostname.c (__gethostname): Likewise.
	* sysdeps/posix/gettimeofday.c (__gettimeofday): Likewise.
	* sysdeps/posix/isatty.c (__isatty): Likewise.
	* sysdeps/posix/killpg.c (killpg): Likewise.
	* sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise.
	* sysdeps/posix/mkfifoat.c (mkfifoat): Likewise.
	* sysdeps/posix/raise.c (raise): Likewise.
	* sysdeps/posix/remove.c (remove): Likewise.
	* sysdeps/posix/rename.c (rename): Likewise.
	* sysdeps/posix/rewinddir.c (__rewinddir): Likewise.
	* sysdeps/posix/seekdir.c (seekdir): Likewise.
	* sysdeps/posix/sigblock.c (__sigblock): Likewise.
	* sysdeps/posix/sigignore.c (sigignore): Likewise.
	* sysdeps/posix/sigintr.c (siginterrupt): Likewise.
	* sysdeps/posix/signal.c (__bsd_signal): Likewise.
	* sysdeps/posix/sigset.c (sigset): Likewise.
	* sysdeps/posix/sigsuspend.c (__sigsuspend): Likewise.
	* sysdeps/posix/sysconf.c (__sysconf): Likewise.
	* sysdeps/posix/sysv_signal.c (__sysv_signal): Likewise.
	* sysdeps/posix/time.c (time): Likewise.
	* sysdeps/posix/ttyname.c (getttyname): Likewise.
	(ttyname): Likewise.
	* sysdeps/posix/ttyname_r.c (__ttyname_r): Likewise.
	* sysdeps/posix/utime.c (utime): Likewise.
	* sysdeps/powerpc/fpu/s_isnan.c (__isnan): Likewise.
	* sysdeps/powerpc/nptl/pthread_spin_lock.c (pthread_spin_lock):
	Likewise.
	* sysdeps/powerpc/nptl/pthread_spin_trylock.c
	(pthread_spin_trylock): Likewise.
	* sysdeps/pthread/aio_error.c (aio_error): Likewise.
	* sysdeps/pthread/aio_read.c (aio_read): Likewise.
	* sysdeps/pthread/aio_read64.c (aio_read64): Likewise.
	* sysdeps/pthread/aio_write.c (aio_write): Likewise.
	* sysdeps/pthread/aio_write64.c (aio_write64): Likewise.
	* sysdeps/pthread/flockfile.c (__flockfile): Likewise.
	* sysdeps/pthread/ftrylockfile.c (__ftrylockfile): Likewise.
	* sysdeps/pthread/funlockfile.c (__funlockfile): Likewise.
	* sysdeps/pthread/timer_create.c (timer_create): Likewise.
	* sysdeps/pthread/timer_getoverr.c (timer_getoverrun): Likewise.
	* sysdeps/pthread/timer_gettime.c (timer_gettime): Likewise.
	* sysdeps/s390/ffs.c (__ffs): Likewise.
	* sysdeps/s390/nptl/pthread_spin_lock.c (pthread_spin_lock):
	Likewise.
	* sysdeps/s390/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
	Likewise.
	* sysdeps/sh/nptl/pthread_spin_lock.c (pthread_spin_lock):
	Likewise.
	* sysdeps/sparc/nptl/pthread_barrier_destroy.c
	(pthread_barrier_destroy): Likewise.
	* sysdeps/sparc/nptl/pthread_barrier_wait.c
	(__pthread_barrier_wait): Likewise.
	* sysdeps/sparc/sparc32/e_sqrt.c (__ieee754_sqrt): Likewise.
	* sysdeps/sparc/sparc32/pthread_barrier_wait.c
	(__pthread_barrier_wait): Likewise.
	* sysdeps/sparc/sparc32/sem_init.c (__old_sem_init): Likewise.
	* sysdeps/tile/memcmp.c (memcmp_common_alignment): Likewise.
	(memcmp_not_common_alignment): Likewise.
	(MEMCMP): Likewise.
	* sysdeps/tile/wordcopy.c (_wordcopy_fwd_aligned): Likewise.
	(_wordcopy_fwd_dest_aligned): Likewise.
	(_wordcopy_bwd_aligned): Likewise.
	(_wordcopy_bwd_dest_aligned): Likewise.
	* sysdeps/unix/bsd/ftime.c (ftime): Likewise.
	* sysdeps/unix/bsd/gtty.c (gtty): Likewise.
	* sysdeps/unix/bsd/stty.c (stty): Likewise.
	* sysdeps/unix/bsd/tcflow.c (tcflow): Likewise.
	* sysdeps/unix/bsd/tcflush.c (tcflush): Likewise.
	* sysdeps/unix/bsd/tcgetattr.c (__tcgetattr): Likewise.
	* sysdeps/unix/bsd/tcgetpgrp.c (tcgetpgrp): Likewise.
	* sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Likewise.
	* sysdeps/unix/bsd/tcsetattr.c (tcsetattr): Likewise.
	* sysdeps/unix/bsd/tcsetpgrp.c (tcsetpgrp): Likewise.
	* sysdeps/unix/bsd/ualarm.c (ualarm): Likewise.
	* sysdeps/unix/bsd/wait3.c (__wait3): Likewise.
	* sysdeps/unix/getlogin_r.c (__getlogin_r): Likewise.
	* sysdeps/unix/sockatmark.c (sockatmark): Likewise.
	* sysdeps/unix/stime.c (stime): Likewise.
	* sysdeps/unix/sysv/linux/_exit.c (_exit): Likewise.
	* sysdeps/unix/sysv/linux/aio_sigqueue.c (__aio_sigqueue):
	Likewise.  Use internal_function.
	* sysdeps/unix/sysv/linux/arm/sigaction.c (__libc_sigaction):
	Convert to prototype-style function definition.
	* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise.
	* sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise.
	* sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Likewise.
	* sysdeps/unix/sysv/linux/gai_sigqueue.c (__gai_sigqueue):
	Likewise.  Use internal_function.
	* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Convert to
	prototype-style function definition
	* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
	Likewise.
	(__getlogin_r): Likewise.
	* sysdeps/unix/sysv/linux/getpt.c (__posix_openpt): Likewise.
	* sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c
	(__pthread_cond_broadcast): Likewise.
	* sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c
	(__pthread_cond_destroy): Likewise.
	* sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c
	(__pthread_cond_init): Likewise.
	* sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c
	(__pthread_cond_signal): Likewise.
	* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
	(__pthread_cond_wait): Likewise.
	* sysdeps/unix/sysv/linux/i386/getmsg.c (getmsg): Likewise.
	* sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise.
	* sysdeps/unix/sysv/linux/ia64/sigaction.c (__libc_sigaction):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/sigpending.c (sigpending):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/sigprocmask.c (__sigprocmask):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/sigaction.c (__libc_sigaction):
	Likewise.
	* sysdeps/unix/sysv/linux/msgget.c (msgget): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
	(__ftruncate64): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
	(truncate64): Likewise.
	* sysdeps/unix/sysv/linux/pt-raise.c (raise): Likewise.
	* sysdeps/unix/sysv/linux/pthread_getcpuclockid.c
	(pthread_getcpuclockid): Likewise.
	* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
	Likewise.
	* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
	Likewise.
	* sysdeps/unix/sysv/linux/pthread_sigmask.c (pthread_sigmask):
	Likewise.
	* sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
	Likewise.
	* sysdeps/unix/sysv/linux/raise.c (raise): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c
	(__libc_sigaction): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sigpending.c (sigpending):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c
	(__sigprocmask): Likewise.
	* sysdeps/unix/sysv/linux/semget.c (semget): Likewise.
	* sysdeps/unix/sysv/linux/semop.c (semop): Likewise.
	* sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64): Likewise.
	* sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise.
	* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Likewise.
	* sysdeps/unix/sysv/linux/shmget.c (shmget): Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c (__libc_sigaction):
	Likewise.
	* sysdeps/unix/sysv/linux/sigpending.c (sigpending): Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise.
	* sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Likewise.
	* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c (sigpending):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c
	(__sigprocmask): Likewise.
	* sysdeps/unix/sysv/linux/speed.c (cfgetospeed): Likewise.
	(cfgetispeed): Likewise.
	(cfsetospeed): Likewise.
	(cfsetispeed): Likewise.
	* sysdeps/unix/sysv/linux/tcflow.c (tcflow): Likewise.
	* sysdeps/unix/sysv/linux/tcflush.c (tcflush): Likewise.
	* sysdeps/unix/sysv/linux/tcgetattr.c (__tcgetattr): Likewise.
	* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
	* sysdeps/unix/sysv/linux/time.c (time): Likewise.
	* sysdeps/unix/sysv/linux/timer_create.c (timer_create): Likewise.
	* sysdeps/unix/sysv/linux/timer_delete.c (timer_delete): Likewise.
	* sysdeps/unix/sysv/linux/timer_getoverr.c (timer_getoverrun):
	Likewise.
	* sysdeps/unix/sysv/linux/timer_gettime.c (timer_gettime):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigpending.c (sigpending):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigprocmask.c (__sigprocmask):
	Likewise.
	* sysdeps/x86_64/backtrace.c (__backtrace): Likewise.
2015-10-19 12:04:33 +00:00