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Author SHA1 Message Date
Joseph Myers
bfff8b1bec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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
Joseph Myers
f7a9f785e5 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Mike Frysinger
c70a4b1db0 ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
Ulrich Drepper
d75a0a62b1 Remove IA-64 support 2012-01-07 11:19:05 -05:00
Andreas Jaeger
41bdb6e20c Update to LGPL v2.1. 
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
 2001-07-06 04:58:11 +00:00
Ulrich Drepper
667b057725 Update. 
2001-03-07  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/ia64/bits/fenv.h (FE_NONIEEE_ENV): New macro.

2001-03-07  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/unix/sysv/linux/ia64/ioperm.c (_ioperm): Remove unused
	variables addr & len.

2001-02-22  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/ia64/fpu/feenablxcpt.c (feenableexcept): Remove
	punctuation in asm constraint.

2001-03-07  Mark Kettenis  <kettenis@gnu.org>

	* resolv/netdb.h [__USE_GNU]: Define __need_timespec and include
	<time.h> to get definition of `struct timespec'.

2001-03-08  Jakub Jelinek  <jakub@redhat.com>

	* elf/rtld.c (dl_main): If tracing, warn about undefined symbols if
	LD_WARN=1, not if LD_WARN is unset.

2001-03-07  Andreas Schwab  <schwab@suse.de>

	* elf/ldconfig.h: Moved to ...
	* sysdeps/generic/ldconfig.h: ... here.
	* sysdeps/unix/sysv/linux/i386/ldconfig.h: New file.
	* sysdeps/unix/sysv/linux/m68k/ldconfig.h: New file.
	* sysdeps/unix/sysv/linux/ia64/ldconfig.h: New file.
	* elf/readlib.c (interpreters, known_libs): Use
	SYSDEP_KNOWN_INTERPRETER_NAMES and SYSDEP_KNOWN_LIBRARY_NAMES
	instead of hard coding old names.
 2001-03-10 16:40:59 +00:00
Ulrich Drepper
c0ac34e447 Update. 
* mutex.c (__pthread_mutex_unlock): For PTHREAD_MUTEX_RECURSIVE_NP
	test for owner first.
	Patch by Kaz Kylheku <kaz@ashi.footprints.net>.
 2000-09-28 23:11:33 +00:00
Ulrich Drepper
417bafec1e Update. 
* stdlib/Makefile (headers): Add bits/wchar.h.
	* sysdeps/unix/sysv/linux/i386/bits/wchar.h: New file.
	* sysdeps/generic/bits/wchar.h: New file.
	* sysdeps/generic/stdint.h: Include <bits/wchar.h>.  Use values in this
	file to define WCHAR_MIN and WCHAR_MAX.
	Change UINT*8_MAX and UIN*16_MAX value to type int.
	* wcsmbs/wchar.h: Include <bits/wchar.h>.  Use values in this
	file to define WCHAR_MIN and WCHAR_MAX.
	* sysdeps/alpha/fpu/bits/mathdef.h: Make FP_ILOGB0 and FP_ILOGBNAN
	int values.
	* sysdeps/arm/fpu/bits/mathdef.h: Likewise.
	* sysdeps/generic/bits/mathdef.h: Likewise.
	* sysdeps/i386/fpu/bits/mathdef.h: Likewise.
	* sysdeps/m68k/fpu/bits/mathdef.h: Likewise.
	* sysdeps/powerpc/fpu/bits/mathdef.h: Likewise.
	* sysdeps/sparc/fpu/bits/mathdef.h: Likewise.
	* locale/locale.h (struct lconv): Add __ prefix to the new members
	if not C99.
	* sysdeps/generic/inttypes.h: Remove unnecessary imaxabs and
	imaxdiv optimizations.
	* sysdeps/wordsize-32/lldiv.c: Add hack to make alias work.
	* sysdeps/wordsize-64/ldiv.c: Likewise.
	* sysdeps/alpha/fpu/bits/fenv.h: Change type of FE_*_ENV macros to
	const fenv_t*.
	* sysdeps/generic/bits/fenv.h: Likewise.
	* sysdeps/i386/fpu/bits/fenv.h: Likewise.
	* sysdeps/ia64/bits/fenv.h: Likewise.
	* sysdeps/m68k/fpu/bits/fenv.h: Likewise.
	* sysdeps/mips/bits/fenv.h: Likewise.
	* sysdeps/s390/fpu/bits/fenv.h: Likewise.
	* sysdeps/sparc/fpu/bits/fenv.h: Likewise.
	Reported by Joseph S. Myers <jsm28@cam.ac.uk>.

	* catgets/open_catalog.c: Likewise.
 2000-09-01 06:39:10 +00:00
Ulrich Drepper
f1d86a931b Update. 
2000-05-05  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/unix/sysv/linux/ia64/sysdep.h: New file.
	* sysdeps/unix/sysv/linux/ia64/syscall.S: New file.

	* sysdeps/unix/sysv/linux/ia64/bits/types.h: New file.
	* sysdeps/unix/sysv/linux/ia64/bits/endian.h: New file.

	* sysdeps/ia64/Implies: New file.
	* sysdeps/ia64/Versions: New file.  Declare _dl_symbol_address.
	* sysdeps/ia64/Makefile: New file.
	* sysdeps/ia64/gmp-mparam.h: New file,

	* sysdeps/ia64/elf/start.S: New file.

	* sysdeps/ia64/bits/fenv.h: New file.

2000-05-05  David Mosberger-Tang  <davidm@hpl.hp.com>

	* sysdeps/unix/sysv/linux/ia64/sysdep.S: New file.

2000-04-26  Jes Sorensen  <Jes.Sorensen@cern.ch>

	* sysdeps/unix/sysv/linux/ia64/bits/elfclass.h: New file.  The
	ia64 has 64 bit .hash entries just as the Alpha.

2000-04-25  Jes Sorensen  <Jes.Sorensen@cern.ch>

	* sysdeps/ia64/memprof.h: New file.  Provide GETSP() macro.

2000-04-17  Jes Sorensen  <Jes.Sorensen@cern.ch>

	* sysdeps/ia64/fpu/fclrexcpt.c: New file.
	* sysdeps/ia64/fpu/fedisblxcpt.c: New file.
	* sysdeps/ia64/fpu/feenablxcpt.c: New file.
	* sysdeps/ia64/fpu/fegetenv.c: New file.
	* sysdeps/ia64/fpu/fegetexcept.c: New file.
	* sysdeps/ia64/fpu/fegetround.c: New file.
	* sysdeps/ia64/fpu/feholdexcpt.c: New file.
	* sysdeps/ia64/fpu/fesetenv.c: New file.
	* sysdeps/ia64/fpu/fesetround.c: New file.
	* sysdeps/ia64/fpu/feupdateenv.c: New file.
	* sysdeps/ia64/fpu/fgetexcptflg.c: New file.
	* sysdeps/ia64/fpu/fraiseexcpt.c: New file.
	* sysdeps/ia64/fpu/fsetexcptflg.c: New file.
	* sysdeps/ia64/fpu/ftestexcept.c: New file.

	* sysdeps/unix/sysv/linux/i386/dl-procinfo.h (_DL_HWCAP_COUNT): New.
	* sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.h
	(_DL_HWCAP_COUNT): New.
	* sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.h
	(_DL_HWCAP_COUNT): New.
 2000-05-05 16:49:44 +00:00