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authorUlrich Drepper <drepper@redhat.com>2000-03-26 18:48:26 +0000
committerUlrich Drepper <drepper@redhat.com>2000-03-26 18:48:26 +0000
commit4fcddf8e57fa96dcf8759d95b5e427bd0cff69b5 (patch)
treed005a27000ed5f9b00c2830541f21690a7887eaa /sysdeps/arm
parent0efadcd9ac89b3a914926b2078d6840176b119d7 (diff)
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Update.
2000-03-24  Andreas Jaeger  <aj@suse.de>

	* Makefile (postclean): Added soversions.i.

2000-03-24  Scott Bambrough  <scottb@netwinder.org>

	* sysdeps/arm/fpu/fpu_control.h: Define _FPU_MASK_IM, _FPU_MASK_ZM,
	_FPU_MASK_OM, _FPU_MASK_UM, _FPU_MASK_PM, _FPU_MASK_DM, _FPU_DEFAULT,
	and _FPU_IEEE.  Change _FPU_RESERVED.

2000-03-24  Scott Bambrough  <scottb@netwinder.org>

	* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: New file.

2000-03-24  Roland McGrath  <roland@baalperazim.frob.com>

	* sysdeps/posix/getaddrinfo.c: Include <net/if.h> for if_nametoindex.
	(gaih_inet): Remove unused duplicate variable.

	* inet/getnameinfo.c (getnameinfo): Use IFNAMSIZ, not MAXHOSTNAMELEN.
	Don't use __libc_sa_len, which only exists for Linux.  Just handle
	AF_INET and AF_INET6 directly as well as AF_LOCAL, since those are the
	only flavors supported by this function anyway.

2000-03-24  Geoff Clare  <gwc@unisoft.com>

	* stdlib/strfmon.c: corrected problems with missing signs and
	missing or extra spaces; allow for sign strings longer than
	one character; add padding to ensure positive and negative
	formats are aligned when a left precision is used.

2000-03-26  Ulrich Drepper  <drepper@redhat.com>

	* stdlib/random_r.c (__setstate_r): Allow RNGs of type 4.
	Patch by John Mizel <John.Mizel@msdw.com>.
Diffstat (limited to 'sysdeps/arm')
-rw-r--r--sysdeps/arm/fpu/fpu_control.h34
1 files changed, 25 insertions, 9 deletions
diff --git a/sysdeps/arm/fpu/fpu_control.h b/sysdeps/arm/fpu/fpu_control.h
index b5338c5755..dfcfaabfcd 100644
--- a/sysdeps/arm/fpu/fpu_control.h
+++ b/sysdeps/arm/fpu/fpu_control.h
@@ -1,5 +1,5 @@
 /* FPU control word definitions.  ARM version.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 2000 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
@@ -23,12 +23,12 @@
 /* We have a slight terminology confusion here.  On the ARM, the register
  * we're interested in is actually the FPU status word - the FPU control
  * word is something different (which is implementation-defined and only
- * accessible from supervisor mode.)  
+ * accessible from supervisor mode.)
  *
  * The FPSR looks like this:
  *
  *     31-24        23-16          15-8              7-0
- * | system ID | trap enable | system control | exception flags | 
+ * | system ID | trap enable | system control | exception flags |
  *
  * We ignore the system ID bits; for interest's sake they are:
  *
@@ -40,7 +40,7 @@
  * The trap enable and exception flags are both structured like this:
  *
  *     7 - 5     4     3     2     1     0
- * | reserved | INX | UFL | OFL | DVZ | IVO | 
+ * | reserved | INX | UFL | OFL | DVZ | IVO |
  *
  * where a `1' bit in the enable byte means that the trap can occur, and
  * a `1' bit in the flags byte means the exception has occurred.
@@ -57,7 +57,7 @@
  *
  *     7-5      4    3    2    1    0
  * | reserved | AC | EP | SO | NE | ND |
- * 
+ *
  * where the bits mean
  *
  *  ND - no denormalised numbers (force them all to zero)
@@ -67,11 +67,27 @@
  *  AC - use alternate definition for C flag on compare operations
  */
 
-#define _FPU_RESERVED 0xfff0e0f0  /* These bits are reserved.  */
+/* masking of interrupts */
+#define _FPU_MASK_IM	0x00010000	/* invalid operation */
+#define _FPU_MASK_ZM	0x00020000	/* divide by zero */
+#define _FPU_MASK_OM	0x00040000	/* overflow */
+#define _FPU_MASK_UM	0x00080000	/* underflow */
+#define _FPU_MASK_PM	0x00100000	/* inexact */
+#define _FPU_MASK_DM	0x00000000	/* denormalized operation */
+
+/* The system id bytes cannot be changed.
+   Only the bottom 5 bits in the trap enable byte can be changed.
+   Only the bottom 5 bits in the system control byte can be changed.
+   Only the bottom 5 bits in the exception flags are used.
+   The exception flags are set by the fpu, but can be zeroed by the user. */
+#define _FPU_RESERVED	0xffe0e0e0	/* These bits are reserved.  */
 
-/* The fdlibm code requires no interrupts for exceptions.  Don't
-   change the rounding mode, it would break long double I/O!  */
-#define _FPU_DEFAULT  0x00001000 /* Default value.  */
+/* The fdlibm code requires strict IEEE double precision arithmetic,
+   no interrupts for exceptions, rounding to nearest.  Changing the
+   rounding mode will break long double I/O.  Turn on the AC bit,
+   the compiler generates code that assumes it is on.  */
+#define _FPU_DEFAULT	0x00001000	/* Default value.  */
+#define _FPU_IEEE	0x001f1000	/* Default + exceptions enabled. */
 
 /* Type of the control word.  */
 typedef unsigned int fpu_control_t;