1 /* machine description file for Sun 4 SPARC.
2 Copyright (C) 1987 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* The following line tells the configuration script what sort of
21 operating system this machine is likely to run.
25 Use -opsystem=sunos4 for operating system version 4, and
26 -opsystem=bsd4-2 for earlier versions.
29 /* The following three symbols give information on
30 the size of various data types. */
32 #define SHORTBITS 16 /* Number of bits in a short */
34 #define INTBITS 32 /* Number of bits in an int */
36 #define LONGBITS 32 /* Number of bits in a long */
38 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
39 is the most significant byte. */
41 #define WORDS_BIG_ENDIAN
43 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
44 * group of arguments and treat it as an array of the arguments. */
48 /* Say this machine is a sparc */
55 # define C_OPTIMIZE_SWITCH -O
57 /* This level of optimization is reported to work. */
58 # define C_OPTIMIZE_SWITCH -O2
61 /* Use type int rather than a union, to represent Lisp_Object */
65 /* XINT must explicitly sign-extend */
67 #define EXPLICIT_SIGN_EXTEND
69 /* Data type of load average, as read out of kmem. */
71 #define LOAD_AVE_TYPE long
73 /* Convert that into an integer that is 100 for a load average of 1.0 */
75 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
77 /* Define C_ALLOCA if this machine does not support a true alloca
78 and the one written in C should be used instead.
79 Define HAVE_ALLOCA to say that the system provides a properly
80 working alloca function and it should be used.
81 Define neither one if an assembler-language alloca
82 in the file alloca.s should be used. */
85 #if __GNUC__ < 2 /* Modern versions of GCC handle alloca directly. */
89 /* Must use the system's termcap, if we use any termcap.
90 It does special things. */
93 #define LIBS_TERMCAP -ltermcap
96 /* Mask for address bits within a memory segment */
98 #define SEGMENT_MASK (SEGSIZ - 1)
100 /* Arrange to link with sun windows, if requested. */
101 /* For details on emacstool and sunfns, see etc/SUN-SUPPORT */
102 /* These programs require Sun UNIX 4.2 Release 3.2 or greater */
104 #ifdef HAVE_SUN_WINDOWS
105 #define OTHER_FILES ${etcdir}emacstool
106 #define LIBS_MACHINE -lsuntool -lsunwindow -lpixrect
107 #define OBJECTS_MACHINE sunfns.o
108 #define SYMS_MACHINE syms_of_sunfns ()
109 #define PURESIZE 130000
113 /* This really belongs in s/sun.h. */
115 /* Say that the text segment of a.out includes the header;
116 the header actually occupies the first few bytes of the text segment
117 and is counted in hdr.a_text. */
119 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
121 /* This is the offset of the executable's text, from the start of the file. */
123 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
125 #endif /* __NetBSD__ */