Move m68k from ports to libc

1 files changed, 87 insertions, 0 deletions

diff --git a/sysdeps/m68k/fpu/bits/fenv.h b/sysdeps/m68k/fpu/bits/fenv.h
new file mode 100644
index 0000000000..e16412514f
--- /dev/null
+++ b/sysdeps/m68k/fpu/bits/fenv.h
@@ -0,0 +1,87 @@
+/* Copyright (C) 1997-2014 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 _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+
+/* Define bits representing the exception.  We use the bit positions of
+   the appropriate bits in the FPSR Accrued Exception Byte.  */
+enum
+  {
+    FE_INEXACT =
+#define FE_INEXACT	(1 << 3)
+      FE_INEXACT,
+    FE_DIVBYZERO =
+#define FE_DIVBYZERO	(1 << 4)
+      FE_DIVBYZERO,
+    FE_UNDERFLOW =
+#define FE_UNDERFLOW	(1 << 5)
+      FE_UNDERFLOW,
+    FE_OVERFLOW =
+#define FE_OVERFLOW	(1 << 6)
+      FE_OVERFLOW,
+    FE_INVALID =
+#define FE_INVALID	(1 << 7)
+      FE_INVALID
+  };
+
+#define FE_ALL_EXCEPT \
+	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+/* The m68k FPU supports all of the four defined rounding modes.  We use
+   the bit positions in the FPCR Mode Control Byte as the values for the
+   appropriate macros.  */
+enum
+  {
+    FE_TONEAREST =
+#define FE_TONEAREST	0
+      FE_TONEAREST,
+    FE_TOWARDZERO =
+#define FE_TOWARDZERO	(1 << 4)
+      FE_TOWARDZERO,
+    FE_DOWNWARD =
+#define FE_DOWNWARD	(2 << 4)
+      FE_DOWNWARD,
+    FE_UPWARD =
+#define FE_UPWARD	(3 << 4)
+      FE_UPWARD
+  };
+
+
+/* Type representing exception flags.  */
+typedef unsigned int fexcept_t;
+
+
+/* Type representing floating-point environment.  This structure
+   corresponds to the layout of the block written by `fmovem'.  */
+typedef struct
+  {
+    unsigned int __control_register;
+    unsigned int __status_register;
+    unsigned int __instruction_address;
+  }
+fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV	((const fenv_t *) -1)
+
+#ifdef __USE_GNU
+/* Floating-point environment where none of the exceptions are masked.  */
+# define FE_NOMASK_ENV	((const fenv_t *) -2)
+#endif