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Add fesetexcept.

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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.
This commit is contained in:
Joseph Myers 2016-08-16 16:16:10 +00:00
parent 056dd72af8
commit 5146356f5a
38 changed files with 419 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
ChangeLog
View File

@ -1,3 +1,54 @@
2016-08-16 Joseph Myers <joseph@codesourcery.com>
* 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 Florian Weimer <fweimer@redhat.com>
* nptl/tst-tls3.c (default_stack_size_in_mb, stack_size_in_mb):

2
NEWS
View File

@ -32,6 +32,8 @@ Version 2.25
presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
problem.
* The fesetexcept function from TS 18661-1:2014 is added to libm.
Security related changes:
On ARM EABI (32-bit), generating a backtrace for execution contexts which

12
manual/arith.texi
View File

@ -757,6 +757,18 @@ The function returns zero in case the operation was successful, a
non-zero value otherwise.
@end deftypefun
@comment fenv.h
@comment ISO
@deftypefun int fesetexcept (int @var{excepts})
@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
This function sets the supported exception flags indicated by
@var{excepts}, like @code{feraiseexcept}, but without causing enabled
traps to be taken. @code{fesetexcept} is from TS 18661-1:2014.
The function returns zero in case the operation was successful, a
non-zero value otherwise.
@end deftypefun
@comment fenv.h
@comment ISO
@deftypefun int fetestexcept (int @var{excepts})

5
math/Makefile
View File

@ -41,7 +41,7 @@ libm-support = s_lib_version s_matherr s_signgam \
fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg \
ftestexcept fegetround fesetround fegetenv feholdexcpt \
fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt \
fegetexcept
fegetexcept fesetexcept
libm-calls = \
e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
@ -146,7 +146,8 @@ tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
test-signgam-uint test-signgam-uint-init test-signgam-ullong \
test-signgam-ullong-init test-nan-overflow test-nan-payload \
test-fexcept test-fexcept-traps $(tests-static)
test-fexcept test-fexcept-traps test-fesetexcept \
test-fesetexcept-traps $(tests-static)
tests-static = test-fpucw-static test-fpucw-ieee-static \
test-signgam-uchar-static test-signgam-uchar-init-static \
test-signgam-uint-static test-signgam-uint-init-static \

3
math/Versions
View File

@ -214,4 +214,7 @@ libm {
nextup; nextupf; nextupl;
nextdown; nextdownf; nextdownl;
}
GLIBC_2.25 {
fesetexcept;
}
}

9
math/fenv.h
View File

@ -22,7 +22,8 @@
#ifndef _FENV_H
#define _FENV_H 1
#include <features.h>
#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
#include <bits/libc-header-start.h>
/* Get the architecture dependend definitions. The following definitions
are expected to be done:
@ -70,6 +71,12 @@ extern int fegetexceptflag (fexcept_t *__flagp, int __excepts) __THROW;
/* Raise the supported exceptions represented by EXCEPTS. */
extern int feraiseexcept (int __excepts) __THROW;
#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Set the supported exception flags represented by EXCEPTS, without
causing enabled traps to be taken. */
extern int fesetexcept (int __excepts) __THROW;
#endif
/* Set complete status for exceptions indicated by EXCEPTS according to
the representation in the object pointed to by FLAGP. */
extern int fesetexceptflag (const fexcept_t *__flagp, int __excepts) __THROW;

27
math/fesetexcept.c Normal file
View File

@ -0,0 +1,27 @@
/* Set given exception flags.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
int
fesetexcept (int excepts)
{
/* This always fails unless nothing needs to be done. */
return (excepts != 0);
}
stub_warning (fesetexcept)

68
math/test-fesetexcept-traps.c Normal file
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@ -0,0 +1,68 @@
/* Test fesetexcept: exception traps enabled.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <stdio.h>
#include <math-tests.h>
static int
do_test (void)
{
int result = 0;
fedisableexcept (FE_ALL_EXCEPT);
int ret = feenableexcept (FE_ALL_EXCEPT);
if (!EXCEPTION_ENABLE_SUPPORTED (FE_ALL_EXCEPT) && (ret == -1))
{
puts ("feenableexcept (FE_ALL_EXCEPT) not supported, cannot test");
return 77;
}
else if (ret != 0)
{
puts ("feenableexcept (FE_ALL_EXCEPT) failed");
result = 1;
return result;
}
if (EXCEPTION_SET_FORCES_TRAP)
{
puts ("setting exceptions traps, cannot test on this architecture");
return 77;
}
/* Verify fesetexcept does not cause exception traps. */
ret = fesetexcept (FE_ALL_EXCEPT);
if (ret == 0)
puts ("fesetexcept (FE_ALL_EXCEPT) succeeded");
else
{
puts ("fesetexcept (FE_ALL_EXCEPT) failed");
if (EXCEPTION_TESTS (float))
{
puts ("failure of fesetexcept was unexpected");
result = 1;
}
else
puts ("failure of fesetexcept OK");
}
feclearexcept (FE_ALL_EXCEPT);
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"

129
math/test-fesetexcept.c Normal file
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@ -0,0 +1,129 @@
/* Test fesetexcept.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <stdio.h>
#include <math-tests.h>
static int
test_fesetexcept (int exc, const char *exc_name)
{
int result = 0;
printf ("Testing %s\n", exc_name);
feclearexcept (FE_ALL_EXCEPT);
int ret = fesetexcept (exc);
if (ret == 0)
printf ("fesetexcept (%s) succeeded\n", exc_name);
else
{
printf ("fesetexcept (%s) failed\n", exc_name);
if (exc == 0 || EXCEPTION_TESTS (float))
{
puts ("failure of fesetexcept was unexpected");
result = 1;
}
else
puts ("failure of fesetexcept OK, skipping further tests");
return result;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != exc)
{
printf ("raised exceptions %x, expected %x\n",
(unsigned int) ret, (unsigned int) exc);
result = 1;
}
ret = feraiseexcept (FE_ALL_EXCEPT);
if (ret != 0)
{
if (exc == 0 && !EXCEPTION_TESTS (float))
{
puts ("feraiseexcept (FE_ALL_EXCEPT) failed, skipping further tests");
return result;
}
puts ("feraiseexcept (FE_ALL_EXCEPT) unexpectedly failed");
result = 1;
}
ret = fesetexcept (exc);
if (ret != 0)
{
puts ("fesetexcept (second test) unexpectedly failed");
result = 1;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != FE_ALL_EXCEPT)
{
printf ("raised exceptions (second test) %x, expected %x\n",
(unsigned int) ret, (unsigned int) FE_ALL_EXCEPT);
result = 1;
}
feclearexcept (FE_ALL_EXCEPT);
ret = feraiseexcept (FE_ALL_EXCEPT & ~exc);
if (ret != 0)
{
puts ("feraiseexcept (third test) unexpectedly failed");
result = 1;
}
ret = fesetexcept (exc);
if (ret != 0)
{
puts ("fesetexcept (third test) unexpectedly failed");
result = 1;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != FE_ALL_EXCEPT)
{
printf ("raised exceptions (third test) %x, expected %x\n",
(unsigned int) ret, (unsigned int) FE_ALL_EXCEPT);
result = 1;
}
return result;
}
static int
do_test (void)
{
int result = 0;
result |= test_fesetexcept (0, "0");
result |= test_fesetexcept (FE_ALL_EXCEPT, "FE_ALL_EXCEPT");
#ifdef FE_DIVBYZERO
result |= test_fesetexcept (FE_DIVBYZERO, "FE_DIVBYZERO");
#endif
#ifdef FE_INEXACT
result |= test_fesetexcept (FE_INEXACT, "FE_INEXACT");
#endif
#ifdef FE_INVALID
result |= test_fesetexcept (FE_INVALID, "FE_INVALID");
#endif
#ifdef FE_OVERFLOW
result |= test_fesetexcept (FE_OVERFLOW, "FE_OVERFLOW");
#endif
#ifdef FE_UNDERFLOW
result |= test_fesetexcept (FE_UNDERFLOW, "FE_UNDERFLOW");
#endif
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"

31
sysdeps/i386/fpu/fesetexcept.c Normal file
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@ -0,0 +1,31 @@
/* Set given exception flags. i386 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
int
fesetexcept (int excepts)
{
fenv_t temp;
__asm__ ("fnstenv %0" : "=m" (*&temp));
temp.__status_word |= excepts & FE_ALL_EXCEPT;
__asm__ ("fldenv %0" : : "m" (*&temp));
return 0;
}

2
sysdeps/nacl/libm.abilist
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@ -379,3 +379,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/aarch64/libm.abilist
View File

@ -410,3 +410,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/alpha/libm.abilist
View File

@ -420,6 +420,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.3.4 GLIBC_2.3.4 A
GLIBC_2.3.4 __c1_cabsf F
GLIBC_2.3.4 __c1_cacosf F

2
sysdeps/unix/sysv/linux/arm/libm.abilist
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@ -68,6 +68,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _LIB_VERSION D 0x4
GLIBC_2.4 __clog10 F

2
sysdeps/unix/sysv/linux/hppa/libm.abilist
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@ -380,5 +380,7 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 exp2l F

2
sysdeps/unix/sysv/linux/i386/libm.abilist
View File

@ -422,4 +422,6 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A

2
sysdeps/unix/sysv/linux/ia64/libm.abilist
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@ -351,4 +351,6 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A

2
sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
View File

@ -68,6 +68,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _LIB_VERSION D 0x4
GLIBC_2.4 __clog10 F

2
sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
View File

@ -420,4 +420,6 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A

2
sysdeps/unix/sysv/linux/microblaze/libm.abilist
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@ -379,3 +379,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
View File

@ -381,6 +381,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 exp2l F
_gp_disp _gp_disp A

2
sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
View File

@ -412,4 +412,6 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A

2
sysdeps/unix/sysv/linux/nios2/libm.abilist
View File

@ -379,3 +379,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
View File

@ -421,6 +421,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

2
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
View File

@ -420,6 +420,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

2
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
View File

@ -415,3 +415,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
View File

@ -96,6 +96,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 _LIB_VERSION D 0x4
GLIBC_2.3 __clog10 F

2
sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
View File

@ -410,6 +410,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

2
sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
View File

@ -408,6 +408,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

2
sysdeps/unix/sysv/linux/sh/libm.abilist
View File

@ -380,5 +380,7 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 exp2l F

2
sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
View File

@ -413,6 +413,8 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

2
sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
View File

@ -411,4 +411,6 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A

2
sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
View File

@ -380,3 +380,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
View File

@ -380,3 +380,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
View File

@ -380,3 +380,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

2
sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
View File

@ -411,4 +411,6 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F
GLIBC_2.4 GLIBC_2.4 A

2
sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
View File

@ -410,3 +410,5 @@ GLIBC_2.24 nextdownl F
GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 fesetexcept F

31
sysdeps/x86_64/fpu/fesetexcept.c Normal file
View File

@ -0,0 +1,31 @@
/* Set given exception flags. x86_64 version.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
int
fesetexcept (int excepts)
{
unsigned int mxcsr;
__asm__ ("stmxcsr %0" : "=m" (*&mxcsr));
mxcsr |= excepts & FE_ALL_EXCEPT;
__asm__ ("ldmxcsr %0" : : "m" (*&mxcsr));
return 0;
}