* hurd/Makefile (routines): Add get-host, set-host.

	(distribute): Add hurdhost.h.
	* hurd/hurdhost.h: New file.
	* sysdeps/mach/hurd/gethostname.c: Use _hurd_get_host_config.
	* sysdeps/mach/hurd/gethostid.c: Likewise.
	* sysdeps/mach/hurd/sethostname.c: Use _hurd_set_host_config.
	* sysdeps/mach/hurd/sethostid.c: Likewise.
	* hurd/get-host.c: New file.
	* hurd/set-host.c: New file.

	* math/Makefile (headers): Add fpu_control.h.
	(aux): New variable, list fpu_control and setfpucw.
	* sysdeps/generic/fpu_control.c: New file.
	* sysdeps/stub/fpu_control.h: New file.
	* sysdeps/unix/sysv/linux/m68k/fpu_control.h: Moved to ...
	* sysdeps/m68k/fpu_control.h: here.
	* sysdeps/unix/sysv/linux/i386/fpu_control.h: Moved to ...
	* sysdeps/i386/fpu_control.h: here.
	* sysdeps/unix/sysv/linux/alpha/fpu_control.h: Moved to ...
	* sysdeps/alpha/fpu/fpu_control.h: here.  Fixed copyright.
	* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Remove
	setfpucw, fpu_control.
	* sysdeps/unix/sysv/linux/alpha/fpu_control.c: File removed.
	* sysdeps/unix/sysv/linux/setfpucw.c: Moved to ...
	* sysdeps/generic/setfpucw.c: here.
	(__fpu_control): Variable removed.
	(__setfpucw): Use SET even if zero.

1 files changed, 105 insertions, 0 deletions

diff --git a/sysdeps/i386/fpu_control.h b/sysdeps/i386/fpu_control.h
new file mode 100644
index 0000000000..d72f474eb6
--- /dev/null
+++ b/sysdeps/i386/fpu_control.h
@@ -0,0 +1,105 @@
+/* FPU control word bits.  i387 version.
+Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Olaf Flebbe.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+/* Here is the dirty part. Settup up your 387 through the control word
+ * (cw) register.
+ *
+ *     15-13    12  11-10  9-8     7-6     5    4    3    2    1    0
+ * | reserved | IC | RC  | PC | reserved | PM | UM | OM | ZM | DM | IM
+ *
+ * IM: Invalid operation mask
+ * DM: Denormalized operand mask
+ * ZM: Zero-divide mask
+ * OM: Overflow mask
+ * UM: Underflow mask
+ * PM: Precision (inexact result) mask
+ *
+ * Mask bit is 1 means no interrupt.
+ *
+ * PC: Precision control
+ * 11 - round to extended precision
+ * 10 - round to double precision
+ * 00 - round to single precision
+ *
+ * RC: Rounding control
+ * 00 - rounding to nearest
+ * 01 - rounding down (toward - infinity)
+ * 10 - rounding up (toward + infinity)
+ * 11 - rounding toward zero
+ *
+ * IC: Infinity control
+ * That is for 8087 and 80287 only.
+ *
+ * The hardware default is 0x037f. I choose 0x1372.
+ */
+
+#include <features.h>
+
+/* masking of interrupts */
+#define _FPU_MASK_IM  0x01
+#define _FPU_MASK_DM  0x02
+#define _FPU_MASK_ZM  0x04
+#define _FPU_MASK_OM  0x08
+#define _FPU_MASK_UM  0x10
+#define _FPU_MASK_PM  0x20
+
+/* precision control */
+#define _FPU_EXTENDED 0x300
+#define _FPU_DOUBLE   0x200	/* fdlibm requires double precision */
+#define _FPU_SINGLE   0x0     /* DO NOT USE */
+
+/* rounding control */
+#define _FPU_RC_NEAREST 0x0    /* RECOMMENDED */
+#define _FPU_RC_DOWN    0x400
+#define _FPU_RC_UP      0x800
+#define _FPU_RC_ZERO    0xC00
+
+#define _FPU_RESERVED 0xF0C0  /* Reserved bits in cw */
+
+
+/* The fdlibm code requires strict IEEE double precision arithmetic,
+   and no interrupts for exceptions, rounding to nearest.  */
+
+#define _FPU_DEFAULT  0x127f
+
+/* IEEE:  same as above, but exceptions */
+#define _FPU_IEEE     0x127f
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (cw))
+#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (cw))
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+__BEGIN_DECLS
+
+/* Called at startup.  It can be used to manipulate fpu control register.  */
+extern void __setfpucw __P ((fpu_control_t));
+
+__END_DECLS
+
+#endif	/* fpu_control.h */