Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / parisc / math-emu / fpbits.h

diff --git a/kernel/arch/parisc/math-emu/fpbits.h b/kernel/arch/parisc/math-emu/fpbits.h
new file mode 100644 (file)
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--- /dev/null
+++ b/kernel/arch/parisc/math-emu/fpbits.h
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+/*
+ * Linux/PA-RISC Project (http://www.parisc-linux.org/)
+ *
+ * Floating-point emulation code
+ *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2, or (at your option)
+ *    any later version.
+ *
+ *    This program 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 General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef __NO_PA_HDRS
+    PA header file -- do not include this header file for non-PA builds.
+#endif
+
+
+/*
+ *  These macros are designed to be portable to all machines that have
+ *  a wordsize greater than or equal to 32 bits that support the portable
+ *  C compiler and the standard C preprocessor.  Wordsize (default 32)
+ *  and bitfield assignment (default left-to-right,  unlike VAX, PDP-11)
+ *  should be predefined using the constants HOSTWDSZ and BITFRL and
+ *  the C compiler "-D" flag (e.g., -DHOSTWDSZ=36 -DBITFLR for the DEC-20).
+ *  Note that the macro arguments assume that the integer being referenced
+ *  is a 32-bit integer (right-justified on the 20) and that bit 0 is the
+ *  most significant bit.
+ */
+
+#ifndef HOSTWDSZ
+#define        HOSTWDSZ        32
+#endif
+
+
+/*###########################  Macros  ######################################*/
+
+/*-------------------------------------------------------------------------
+ * NewDeclareBitField_Reference - Declare a structure similar to the simulator
+ * function "DeclBitfR" except its use is restricted to occur within a larger
+ * enclosing structure or union definition.  This declaration is an unnamed
+ * structure with the argument, name, as the member name and the argument,
+ * uname, as the element name. 
+ *----------------------------------------------------------------------- */
+#define Bitfield_extract(start, length, object)        \
+    ((object) >> (HOSTWDSZ - (start) - (length)) &     \
+    ((unsigned)-1 >> (HOSTWDSZ - (length))))
+
+#define Bitfield_signed_extract(start, length, object) \
+    ((int)((object) << start) >> (HOSTWDSZ - (length)))
+
+#define Bitfield_mask(start, len, object)              \
+    ((object) & (((unsigned)-1 >> (HOSTWDSZ-len)) << (HOSTWDSZ-start-len)))
+
+#define Bitfield_deposit(value,start,len,object)  object = \
+    ((object) & ~(((unsigned)-1 >> (HOSTWDSZ-len)) << (HOSTWDSZ-start-len))) | \
+    (((value) & ((unsigned)-1 >> (HOSTWDSZ-len))) << (HOSTWDSZ-start-len))