Adjust SH specific fpu_control.h and ucontext.h files.

1 files changed, 76 insertions, 0 deletions

diff --git a/sysdeps/sh/fpu_control.h b/sysdeps/sh/fpu_control.h
new file mode 100644
index 0000000000..5d2604bafb
--- /dev/null
+++ b/sysdeps/sh/fpu_control.h
@@ -0,0 +1,76 @@
+/* FPU control word definitions.  SH version.
+   Copyright (C) 1999-2014 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
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+#if !defined(__SH_FPU_ANY__)
+
+#define _FPU_RESERVED 0xffffffff
+#define _FPU_DEFAULT  0x00000000
+typedef unsigned int fpu_control_t;
+#define _FPU_GETCW(cw) (cw) = 0
+#define _FPU_SETCW(cw) (void) (cw)
+extern fpu_control_t __fpu_control;
+
+#else
+
+#include <features.h>
+
+/* masking of interrupts */
+#define _FPU_MASK_VM	0x0800	/* Invalid operation */
+#define _FPU_MASK_ZM	0x0400	/* Division by zero  */
+#define _FPU_MASK_OM	0x0200	/* Overflow	     */
+#define _FPU_MASK_UM	0x0100	/* Underflow	     */
+#define _FPU_MASK_IM	0x0080	/* Inexact operation */
+
+/* rounding control */
+#define _FPU_RC_NEAREST 0x0	/* RECOMMENDED */
+#define _FPU_RC_ZERO	0x1
+
+#define _FPU_RESERVED 0xffc00000  /* These bits are reserved.  */
+
+/* The fdlibm code requires strict IEEE double precision arithmetic,
+   and no interrupts for exceptions, rounding to nearest.  */
+#define _FPU_DEFAULT	0x00080000 /* Default value.  */
+#define _FPU_IEEE	0x00080f80 /* Default + exceptions enabled. */
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t;
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw) __asm__ ("sts fpscr,%0" : "=r" (cw))
+
+#if defined __GNUC__
+__BEGIN_DECLS
+
+/* GCC provides this function.  */
+extern void __set_fpscr (unsigned long);
+#define _FPU_SETCW(cw) __set_fpscr ((cw))
+#else
+#define _FPU_SETCW(cw) __asm__ ("lds %0,fpscr" : : "r" (cw))
+#endif
+
+/* Default control word set at startup.	 */
+extern fpu_control_t __fpu_control;
+
+__END_DECLS
+
+#endif /* __SH_FPU_ANY__ */
+
+#endif /* _FPU_CONTROL_H */