1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
65 lines
2.8 KiB
C
65 lines
2.8 KiB
C
/*
|
|
* 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))
|