Update.

2000-08-24  Denis Joseph Barrow    <djbarrow@de.ibm.com>

	* sysdeps/s390/fpu/fedisblxcpt.c: New file.
	* sysdeps/s390/fpu/feenablxcpt.c: New file.
	* sysdeps/s390/fpu/fegetexcept.c: New file.
	* sysdeps/s390/fpu/fenv_libc.h: Some reordering, new definition
	FPC_VALID_MASK.

4 files changed, 110 insertions, 6 deletions

diff --git a/sysdeps/s390/fpu/fedisblxcpt.c b/sysdeps/s390/fpu/fedisblxcpt.c
new file mode 100644
index 0000000000..b334c292f1
--- /dev/null
+++ b/sysdeps/s390/fpu/fedisblxcpt.c
@@ -0,0 +1,35 @@
+/* Disable floating-point exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
+
+   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.  */
+
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+fedisableexcept (int excepts)
+{
+  fexcept_t temp, old_exc, new_flags;
+
+  _FPU_GETCW (temp);
+  old_exc = (temp & FPC_EXCEPTION_MASK) >> FPC_EXCEPTION_MASK_SHIFT;
+  new_flags = (temp & (~((excepts & FE_ALL_EXCEPT) << FPC_EXCEPTION_MASK_SHIFT)));
+  _FPU_SETCW (new_flags);
+
+  return old_exc;
+}
diff --git a/sysdeps/s390/fpu/feenablxcpt.c b/sysdeps/s390/fpu/feenablxcpt.c
new file mode 100644
index 0000000000..f2915d8abc
--- /dev/null
+++ b/sysdeps/s390/fpu/feenablxcpt.c
@@ -0,0 +1,35 @@
+/* Enable floating-point exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
+
+   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.  */
+
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+feenableexcept (int excepts)
+{
+  fexcept_t temp, old_exc, new_flags;
+
+  _FPU_GETCW (temp);
+  old_exc = (temp & FPC_EXCEPTION_MASK) >> FPC_EXCEPTION_MASK_SHIFT;
+  new_flags = (temp | ((excepts & FE_ALL_EXCEPT) <<  FPC_EXCEPTION_MASK_SHIFT));
+  _FPU_SETCW (new_flags);
+
+  return old_exc;
+}
diff --git a/sysdeps/s390/fpu/fegetexcept.c b/sysdeps/s390/fpu/fegetexcept.c
new file mode 100644
index 0000000000..72fa24e74b
--- /dev/null
+++ b/sysdeps/s390/fpu/fegetexcept.c
@@ -0,0 +1,31 @@
+/* Get enabled floating-point exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
+
+   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.  */
+
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+fegetexcept (void)
+{
+  fexcept_t exc;
+
+  _FPU_GETCW (exc);
+  return ((exc & FPC_EXCEPTION_MASK) >>  FPC_EXCEPTION_MASK_SHIFT);
+}
diff --git a/sysdeps/s390/fpu/fenv_libc.h b/sysdeps/s390/fpu/fenv_libc.h
index d4c7b3ea32..26308b198a 100644
--- a/sysdeps/s390/fpu/fenv_libc.h
+++ b/sysdeps/s390/fpu/fenv_libc.h
@@ -22,16 +22,19 @@
 
 #include <fenv.h>
 
-/* Definitions from asm/s390-regs-common.h that are needed in th glibc. */
+/* Definitions from asm/s390-regs-common.h that are needed in glibc.  */
+
 
-#define FPC_DXC_MASK		0x0000FF00
 #define FPC_EXCEPTION_MASK	0xF8000000
 #define FPC_FLAGS_MASK		0x00F80000
+#define FPC_DXC_MASK		0x0000FF00
 #define FPC_RM_MASK		0x00000003
+#define FPC_VALID_MASK		((FPC_EXCEPTION_MASK|FPC_FLAGS_MASK| \
+				 FPC_DXC_MASK|FPC_RM_MASK))
 
-#define FPC_EXCEPTION_MASK_SHIFT  24
-#define FPC_FLAGS_SHIFT		  16
-#define FPC_DXC_SHIFT		  8
-#define FPC_NOT_FPU_EXCEPTION	  0x300
+#define FPC_EXCEPTION_MASK_SHIFT	24
+#define FPC_FLAGS_SHIFT			16
+#define FPC_DXC_SHIFT			8
+#define FPC_NOT_FPU_EXCEPTION		0x300
 
 #endif /* _FENV_LIBC_H */