iris4d.h 2.23 KB
Newer Older
1
/* machine description file for Iris-4D machines.  Use with s/irix*.h.
2
   Copyright (C) 1987, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
Glenn Morris's avatar
Glenn Morris committed
3
                 2008, 2009, 2010  Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
4 5 6

This file is part of GNU Emacs.

7
GNU Emacs is free software: you can redistribute it and/or modify
Jim Blandy's avatar
Jim Blandy committed
8
it under the terms of the GNU General Public License as published by
9 10
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Jim Blandy's avatar
Jim Blandy committed
11 12 13 14 15 16 17

GNU Emacs 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
18
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Jim Blandy's avatar
Jim Blandy committed
19 20


Glenn Morris's avatar
Glenn Morris committed
21
/* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
22 23 24 25
   is the most significant byte.  */

#define WORDS_BIG_ENDIAN

Jim Blandy's avatar
Jim Blandy committed
26
/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
Karl Heuer's avatar
Karl Heuer committed
27
   the bit field into an int.  In other words, if bit fields
Jim Blandy's avatar
Jim Blandy committed
28 29
   are always unsigned.

Dan Nicolaescu's avatar
Dan Nicolaescu committed
30
   This flag only matters if you use USE_LISP_UNION_TYPE.  */
Jim Blandy's avatar
Jim Blandy committed
31 32 33 34 35 36

#define EXPLICIT_SIGN_EXTEND

#define TEXT_START 0x400000

/*
Karl Heuer's avatar
Karl Heuer committed
37 38 39
 * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
 * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
 * the value field of a LISP_OBJECT).
Jim Blandy's avatar
Jim Blandy committed
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
 */

#define DATA_START 0x10000000
#define DATA_SEG_BITS	0x10000000

/* Use terminfo instead of termcap.  */

#define TERMINFO

/* Letter to use in finding device name of first pty,
  if system supports pty's.  'a' means it is /dev/ptya0  */

#undef FIRST_PTY_LETTER
#define FIRST_PTY_LETTER 'q'

Dave Love's avatar
Dave Love committed
55
#if _MIPS_SZLONG != 64
Glenn Morris's avatar
Glenn Morris committed
56
/* fixme: should there be 64-bit definitions?  (The ones below aren't OK.)  */
Dave Love's avatar
Dave Love committed
57

Jim Blandy's avatar
Jim Blandy committed
58 59 60
/* The standard definitions of these macros would work ok,
   but these are faster because the constants are short.  */

61
#define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)
Jim Blandy's avatar
Jim Blandy committed
62 63

#define XSET(var, type, ptr) \
64
   ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
65
#endif /* _LP64 */
Jim Blandy's avatar
Jim Blandy committed
66

Miles Bader's avatar
Miles Bader committed
67 68
/* arch-tag: fff5e139-9ae0-465d-afec-837c41ea0aa6
   (do not change this comment) */