1 /* m- file for Mips machines.
2 Copyright (C) 1987, 1992 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. */
21 /* The following line tells the configuration script what sort of
22 operating system this machine is likely to run.
26 Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
27 Note that the proper m- file for the Decstation is m-pmax.h.
30 /* The following three symbols give information on
31 the size of various data types. */
33 #define SHORTBITS 16 /* Number of bits in a short */
35 #define INTBITS 32 /* Number of bits in an int */
37 #define LONGBITS 32 /* Number of bits in a long */
39 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
40 is the most significant byte. */
44 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
45 * group of arguments and treat it as an array of the arguments. */
49 /* Define WORD_MACHINE if addresses and such have
50 * to be corrected before they can be used as byte counts. */
54 /* Define how to take a char and sign-extend into an int.
55 On machines where char is signed, this is a no-op. */
57 #define SIGN_EXTEND_CHAR(c) ((signed char)(c))
59 /* Now define a symbol for the cpu type, if your compiler
60 does not define it automatically:
61 Ones defined so far include vax, m68000, ns16000, pyramid,
62 orion, tahoe, APOLLO and many others */
67 /* Use type int rather than a union, to represent Lisp_Object */
68 /* This is desirable for most machines. */
72 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
73 the 24-bit bit field into an int. In other words, if bit fields
76 If you use NO_UNION_TYPE, this flag does not matter. */
78 #define EXPLICIT_SIGN_EXTEND
80 /* Data type of load average, as read out of kmem. */
82 #define LOAD_AVE_TYPE long
84 /* Convert that into an integer that is 100 for a load average of 1.0 */
86 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
88 /* Define CANNOT_DUMP on machines where unexec does not work.
89 Then the function dump-emacs will not be defined
90 and temacs will do (load "loadup") automatically unless told otherwise. */
94 /* Define VIRT_ADDR_VARIES if the virtual addresses of
95 pure and impure space as loaded can vary, and even their
96 relative order cannot be relied on.
98 Otherwise Emacs assumes that text space precedes data space,
101 /* #define VIRT_ADDR_VARIES */
103 /* Define C_ALLOCA if this machine does not support a true alloca
104 and the one written in C should be used instead.
105 Define HAVE_ALLOCA to say that the system provides a properly
106 working alloca function and it should be used.
107 Define neither one if an assembler-language alloca
108 in the file alloca.s should be used. */
116 /* Define NO_REMAP if memory segmentation makes it not work well
117 to change the boundary between the text section and data section
118 when Emacs is dumped. If you define this, the preloaded Lisp
119 code will not be sharable; but that's better than failing completely. */
123 /* This machine requires completely different unexec code
124 which lives in a separate file. Specify the file name. */
126 #define UNEXEC unexmips.o
128 /* Describe layout of the address space in an executing process. */
130 #define TEXT_START 0x400000
131 #define DATA_START 0x800000
133 /* Alter some of the options used when linking. */
137 /* DECstations don't have this library.
138 #define LIBS_MACHINE -lmld */
140 #define LD_SWITCH_MACHINE -D 800000
143 #define LINKER /bsd43/bin/ld
148 #define LIBS_MACHINE -lmld
149 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o
150 #define LIB_STANDARD -lsocket -lnsl -lc /usr/ccs/lib/crtn.o /usr/ccs/lib/values-Xt.o
153 #define C_DEBUG_SWITCH -g
154 #define C_OPTIMIZE_SWITCH -g -O
155 #define LD_SWITCH_MACHINE -g -Xlinker -D -Xlinker 800000
157 #define C_DEBUG_SWITCH -g3
158 #define C_OPTIMIZE_SWITCH -g3
159 #define LD_SWITCH_MACHINE -g3 -D 800000
162 #else /* not NEWSOS5 */
164 #define LIBS_MACHINE -lmld
165 #define LD_SWITCH_MACHINE -D 800000 -g3
166 #define START_FILES pre-crt0.o /usr/lib/crt1.o
167 #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
168 #define LIBS_TERMCAP -lcurses
170 #define C_SWITCH_MACHINE -I/usr/include/bsd
171 #define C_DEBUG_SWITCH -O -g3
173 #if defined(HAVE_X_WINDOWS) && defined(HAVE_X11)
174 #define HAVE_VFORK /* Graciously provided by libX.a */
177 #endif /* not NEWSOS5 */
180 /* The standard definitions of these macros would work ok,
181 but these are faster because the constants are short. */
183 #define XUINT(a) (((unsigned)(a) << (INTBITS-VALBITS)) >> (INTBITS-VALBITS))
185 #define XSET(var, type, ptr) \
187 ((int)(type) << VALBITS) \
188 + (((unsigned) (ptr) << (INTBITS-VALBITS)) >> (INTBITS-VALBITS)))
190 #define XSETINT(a, b) XSET(a, XTYPE(a), b)
191 #define XSETUINT(a, b) XSET(a, XTYPE(a), b)
192 #define XSETPNTR(a, b) XSET(a, XTYPE(a), b)
196 (((unsigned)(a) << (INTBITS-GCTYPEBITS-VALBITS)) \
197 >> (INTBITS-GCTYPEBITS-VALBITS)))
202 /* Cancel certain parts of standard sysV support. */
203 #undef NONSYSTEM_DIR_LIBRARY
204 #define SYSV_SYSTEM_DIR
207 /* Don't try to use SIGIO or FIONREAD even though they are defined. */
209 #define BROKEN_FIONREAD
211 /* Describe special kernel features. */
216 #if defined(emacs) && !defined(INHIBIT_BSD_TIME)
217 #include <bsd/sys/time.h>
220 /* #define HAVE_SELECT
221 The `select' in the system won't work for pipes,
226 #define HAVE_GETTIMEOFDAY
231 #undef NOMULTIPLEJOBS
232 #define utimes utime /* Someone should check this. */
242 #undef MAIL_USE_FLOCK /* Someone should check this. */
243 #undef HAVE_UNION_WAIT
246 #endif /* not NEWSOS5 */