Patch from Atsushi Nemoto (with some additions):

Current uClibc contains only one fpu_control.h and it is i386 version.
This is a patch to use platform specific fpu_control.h.  All new files
come from glibc 2.3.2.  This patch is against 0.9.21 but also can be
applied to CVS as is.

2 files changed, 74 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc/Makefile b/libc/sysdeps/linux/sparc/Makefile
index 1491cf343..19e9d9394 100644
--- a/libc/sysdeps/linux/sparc/Makefile
+++ b/libc/sysdeps/linux/sparc/Makefile
@@ -55,6 +55,7 @@ $(COBJS): %.o : %.c
 	$(STRIPTOOL) -x -R .note -R .comment $*.o
 
 headers:
+	cd $(TOPDIR)/include && ln -fs ../libc/sysdeps/linux/sparc/fpu_control.h .
 
 clean:
 	rm -f *.[oa] *~ core
diff --git a/libc/sysdeps/linux/sparc/fpu_control.h b/libc/sysdeps/linux/sparc/fpu_control.h
new file mode 100644
index 000000000..b29734ce2
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/fpu_control.h
@@ -0,0 +1,73 @@
+/* FPU control word bits.  SPARC version.
+   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Miguel de Icaza
+
+   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, 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	1
+
+
+#include <features.h>
+#include <bits/wordsize.h>
+
+/* masking of interrupts */
+#define _FPU_MASK_IM  0x08000000
+#define _FPU_MASK_OM  0x04000000
+#define _FPU_MASK_UM  0x02000000
+#define _FPU_MASK_ZM  0x01000000
+#define _FPU_MASK_PM  0x00800000
+
+/* precision control */
+#define _FPU_EXTENDED 0x00000000     /* RECOMMENDED */
+#define _FPU_DOUBLE   0x20000000
+#define _FPU_80BIT    0x30000000
+#define _FPU_SINGLE   0x10000000     /* DO NOT USE */
+
+/* rounding control / Sparc */
+#define _FPU_RC_DOWN    0xc0000000
+#define _FPU_RC_UP      0x80000000
+#define _FPU_RC_ZERO    0x40000000
+#define _FPU_RC_NEAREST 0x0        /* RECOMMENDED */
+
+#define _FPU_RESERVED   0x30300000  /* Reserved bits in cw */
+
+
+/* Now two recommended cw */
+
+/* Linux and IEEE default:
+     - extended precision
+     - rounding to nearest
+     - no exceptions  */
+#define _FPU_DEFAULT  0x0
+#define _FPU_IEEE     0x0
+
+/* Type of the control word.  */
+typedef unsigned long int fpu_control_t;
+
+#if __WORDSIZE == 64
+# define _FPU_GETCW(cw) __asm__ ("stx %%fsr,%0" : "=m" (*&cw))
+# define _FPU_SETCW(cw) __asm__ ("ldx %0,%%fsr" : : "m" (*&cw))
+#else
+# define _FPU_GETCW(cw) __asm__ ("st %%fsr,%0" : "=m" (*&cw))
+# define _FPU_SETCW(cw) __asm__ ("ld %0,%%fsr" : : "m" (*&cw))
+#endif
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+#endif	/* fpu_control.h */