| /* |
| * 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)) |
