1996-02-13 19:40:36 +08:00
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/* 68k FPU control word definitions.
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1998-11-26 20:02:23 +08:00
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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1997-06-24 05:55:26 +08:00
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This file is part of the GNU C Library.
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1996-02-13 19:40:36 +08:00
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1997-06-24 05:55:26 +08:00
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 12:58:11 +08:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1996-02-13 19:40:36 +08:00
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1997-06-24 05:55:26 +08:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 12:58:11 +08:00
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Lesser General Public License for more details.
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1996-02-13 19:40:36 +08:00
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2001-07-06 12:58:11 +08:00
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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1996-02-13 19:40:36 +08:00
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#ifndef _FPU_CONTROL_H
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#define _FPU_CONTROL_H
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/*
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* Motorola floating point control register bits.
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*
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* 31-16 -> reserved (read as 0, ignored on write)
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* 15 -> enable trap for BSUN exception
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* 14 -> enable trap for SNAN exception
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* 13 -> enable trap for OPERR exception
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* 12 -> enable trap for OVFL exception
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* 11 -> enable trap for UNFL exception
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* 10 -> enable trap for DZ exception
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* 9 -> enable trap for INEX2 exception
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* 8 -> enable trap for INEX1 exception
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* 7-6 -> Precision Control
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* 5-4 -> Rounding Control
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* 3-0 -> zero (read as 0, write as 0)
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*
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*
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* Precision Control:
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* 00 - round to extended precision
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* 01 - round to single precision
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* 10 - round to double precision
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* 11 - undefined
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*
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* Rounding Control:
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* 00 - rounding to nearest (RN)
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* 01 - rounding toward zero (RZ)
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* 10 - rounding (down)toward minus infinity (RM)
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* 11 - rounding (up) toward plus infinity (RP)
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*
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* The hardware default is 0x0000. I choose 0x5400.
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*/
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#include <features.h>
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/* masking of interrupts */
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#define _FPU_MASK_BSUN 0x8000
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#define _FPU_MASK_SNAN 0x4000
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#define _FPU_MASK_OPERR 0x2000
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#define _FPU_MASK_OVFL 0x1000
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#define _FPU_MASK_UNFL 0x0800
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#define _FPU_MASK_DZ 0x0400
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#define _FPU_MASK_INEX1 0x0200
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#define _FPU_MASK_INEX2 0x0100
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/* precision control */
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#define _FPU_EXTENDED 0x00 /* RECOMMENDED */
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#define _FPU_DOUBLE 0x80
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#define _FPU_SINGLE 0x40 /* DO NOT USE */
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/* rounding control */
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#define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */
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#define _FPU_RC_ZERO 0x10
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#define _FPU_RC_DOWN 0x20
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#define _FPU_RC_UP 0x30
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#define _FPU_RESERVED 0xFFFF000F /* Reserved bits in fpucr */
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/* Now two recommended fpucr */
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Fri May 3 13:32:08 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* intl/Makefile (CPPFLAGS): Change $(nlsdir) to $(i18ndir) in
LOCALE_ALIAS_PATH.
Fri May 3 03:14:02 1996 Ulrich Drepper <drepper@cygnus.com>
* intl/Makefile (routines): Add l10nflist and explodename.
(distribute): Add loadinfo.h and locale.alias.
(install-others): New variable to install locale.alias.
* intl/dcgettext.c, intl/finddomain.c, intl/gettextP.h,
intl/loadmsgcat.c: Adapt for upcoming gettext-0.10.13. Some code
is now shared with the locale implementation.
* intl/explodename.c, intl/l10nflist.c, intl/loadinfo.h: New file.
Extracted from finddomain.c. This is also used in the locale
implementation.
* intl/locale.alias: New file. Locale alias database compatible
with X Window System's locale alias file. Can now be used in
locale and gettext code.
* libio/stdio.h: Add prototypes for asprint and vasprintf.
* locale/C-collate.c, locale/C-ctype.c, locale/C-messages.c,
locale/C-monetary.c, locale/C-numeric.c, locale/C-time.c: Add new
field in structure with name of locale ("C" in this case).
* locale/Makefile (routines): Add findlocale.
* locale/findlocale.c: New file. Instead of trying to load the
directly described file we now try to be much smarter when this
fails. Use the same code as gettext does.
* locale/loadlocale.c, locale/setlocale.c: Rewrite to know about
new loading scheme.
* locale/localeinfo.h: Adapt prototypes and declarations for new
setlocale implementation. Remove definition of u32_t type. We
now use u_int32_t from <sys/types.h>.
* locale/programs/charset.h (ILLEGAL_CHAR_VALUE): Provide type
with constant.
* locale/programs/config.h, locale/lc-collate.c,
locale/localeinfo.h, locale/programs/ld-collate.c,
locale/programs/ld-ctype.c, locale/programs/ld-messages.c,
locale/programs/ld-monetary.c, locale/programs/ld-numeric.c,
locale/programs/ld-time.c, locale/weight.h, string/strcoll.c:
Change to use u_int32_t and u_int16_t.
* locale/programs/localedef.c (construct_output_path): Change name
of output locale to contain normalized form of the character set
portion.
* string/Makefile (routines): Add agrz-ctsep and argz-next.
(tests): Add tst-strlen.
* string/argz-ctsep.c: New file. Implement reverse operation
from argz-stringify.
* string/argz-next.c: Non-inline version of function from argz.h.
* string/argz.h, string/envz.h: Make usable as global header file.
* string/envz.c: Fix declarations to use size_t where prototypes
say so.
* string/tst-strlen.c: New file. Another test for critical
situation in strlen implementations.
* sysdeps/i386/i586/strlen.S: Fix bug with highest byte in word
being zero.
* wctype/test_wctype.c: Fix controlling comparison after change to
32 bit character class array.
Fri May 3 12:53:12 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/unix/sysv/linux/sys/socket.h: Remove spurious doubled line.
Thu May 2 22:50:52 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/getpriority.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Add s_getpriority.
Thu May 2 22:41:31 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/fpu_control.h (_FPU_DEFAULT):
Disable all exceptions.
Thu May 2 22:33:14 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/e_acos.c, sysdeps/m68k/fpu/e_acosf.c,
sysdeps/m68k/fpu/e_fmod.c, sysdeps/m68k/fpu/e_fmodf.c,
sysdeps/m68k/fpu/isinfl.c, sysdeps/m68k/fpu/isnanl.c,
sysdeps/m68k/fpu/s_atan.c, sysdeps/m68k/fpu/s_atanf.c,
sysdeps/m68k/fpu/s_frexp.c, sysdeps/m68k/fpu/s_frexpf.c,
sysdeps/m68k/fpu/s_ilogb.c, sysdeps/m68k/fpu/s_ilogbf.c,
sysdeps/m68k/fpu/s_isinf.c, sysdeps/m68k/fpu/s_isinff.c,
sysdeps/m68k/fpu/s_ldexp.c, sysdeps/m68k/fpu/s_ldexpf.c,
sysdeps/m68k/fpu/s_modf.c, sysdeps/m68k/fpu/s_modff.c: Don't
define __NO_MATH_INLINES, which is already defined on command
line.
Thu May 2 22:18:28 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_j0f.c (__ieee754_j0f, __ieee754_y0f):
Replace 0x80000000 by 0x48000000.
* sysdeps/libm-ieee754/e_j1f.c (__ieee754_j1f): Likewise.
Thu May 2 21:30:33 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sunrpc/svc_simple.c: Make global variable pl local to
registerrpc.
Thu May 2 00:24:04 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* time/Makefile (tz-cflags): New variable.
(CFLAGS-tzfile.c): New variable.
(CFLAGS-zic.c): Add $(tz-cflags).
(tz-cc): Remove variable.
($(objpfx)tzfile.o, $(objpfx)zic.o): Remove targets.
* sysdeps/mach/hurd/getcwd.c: Jump out of both loops when we find a
name, instead of checking for reaching end of buffer, which happens
when the match is the last entry in the buffer.
1996-05-04 01:44:31 +08:00
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/* The fdlibm code requires no interrupts for exceptions. Don't
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change the rounding mode, it would break long double I/O! */
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#define _FPU_DEFAULT 0x00000000
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1996-02-13 19:40:36 +08:00
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/* IEEE: same as above, but exceptions. We must make it non-zero so
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that __setfpucw works. This bit will be ignored. */
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#define _FPU_IEEE 0x00000001
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/* Type of the control word. */
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typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
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/* Macros for accessing the hardware control word. */
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#define _FPU_GETCW(cw) __asm__ ("fmove%.l %!, %0" : "=dm" (cw))
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1996-02-20 07:14:44 +08:00
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#define _FPU_SETCW(cw) __asm__ volatile ("fmove%.l %0, %!" : : "dm" (cw))
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1996-02-13 19:40:36 +08:00
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/* Default control word set at startup. */
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extern fpu_control_t __fpu_control;
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#endif /* _M68K_FPU_CONTROL_H */
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