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4ef37be4 JB |
1 | /* machine description file for Iris-4D machines. Use with s-iris3-6.h |
2 | Copyright (C) 1987 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
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 | |
17385adc | 8 | the Free Software Foundation; either version 2, or (at your option) |
4ef37be4 JB |
9 | any later version. |
10 | ||
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. | |
15 | ||
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. */ | |
19 | ||
20 | ||
21 | /* The following line tells the configuration script what sort of | |
22 | operating system this machine is likely to run. | |
23 | USUAL-OPSYS="irix3-3" */ | |
24 | ||
25 | /* The following three symbols give information on | |
26 | the size of various data types. */ | |
27 | ||
28 | #define SHORTBITS 16 /* Number of bits in a short */ | |
29 | ||
30 | #define INTBITS 32 /* Number of bits in an int */ | |
31 | ||
32 | #define LONGBITS 32 /* Number of bits in a long */ | |
33 | ||
4ef37be4 JB |
34 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a |
35 | * group of arguments and treat it as an array of the arguments. */ | |
36 | ||
37 | #define NO_ARG_ARRAY | |
38 | ||
39 | /* Define WORD_MACHINE if addresses and such have | |
40 | * to be corrected before they can be used as byte counts. */ | |
41 | ||
42 | #undef WORD_MACHINE | |
43 | ||
44 | /* Now define a symbol for the cpu type, if your compiler | |
45 | does not define it automatically: | |
46 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
47 | orion, tahoe, APOLLO and many others */ | |
48 | ||
49 | #ifndef mips | |
50 | #define mips | |
51 | #endif | |
52 | ||
53 | #ifndef IRIS_4D | |
54 | #define IRIS_4D | |
55 | #endif | |
56 | ||
57 | /* Use type int rather than a union, to represent Lisp_Object */ | |
58 | /* This is desirable for most machines. */ | |
59 | ||
60 | #define NO_UNION_TYPE | |
61 | ||
62 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
63 | the 24-bit bit field into an int. In other words, if bit fields | |
64 | are always unsigned. | |
65 | ||
66 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
67 | ||
68 | #define EXPLICIT_SIGN_EXTEND | |
69 | ||
70 | /* Data type of load average, as read out of kmem. */ | |
71 | ||
72 | #define LOAD_AVE_TYPE long /* This doesn't quite work on the 4D */ | |
73 | ||
74 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
75 | ||
76 | #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0) | |
77 | ||
78 | /* s-iris3-6.h uses /vmunix */ | |
79 | ||
80 | #undef KERNEL_FILE | |
81 | #define KERNEL_FILE "/unix" | |
82 | ||
83 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
84 | Then the function dump-emacs will not be defined | |
85 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
86 | ||
87 | #undef CANNOT_DUMP | |
88 | ||
89 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
90 | pure and impure space as loaded can vary, and even their | |
91 | relative order cannot be relied on. | |
92 | ||
93 | Otherwise Emacs assumes that text space precedes data space, | |
94 | numerically. */ | |
95 | ||
96 | /* #define VIRT_ADDR_VARIES */ | |
97 | ||
98 | /* Define C_ALLOCA if this machine does not support a true alloca | |
99 | and the one written in C should be used instead. | |
100 | Define HAVE_ALLOCA to say that the system provides a properly | |
101 | working alloca function and it should be used. | |
102 | Define neither one if an assembler-language alloca | |
103 | in the file alloca.s should be used. */ | |
104 | ||
105 | #define C_ALLOCA | |
106 | /* #define HAVE_ALLOCA */ | |
107 | ||
108 | /* Define NO_REMAP if memory segmentation makes it not work well | |
109 | to change the boundary between the text section and data section | |
110 | when Emacs is dumped. If you define this, the preloaded Lisp | |
111 | code will not be sharable; but that's better than failing completely. */ | |
112 | ||
113 | #define NO_REMAP | |
114 | ||
115 | /* This machine requires completely different unexec code | |
116 | which lives in a separate file. Specify the file name. */ | |
117 | ||
7260e339 JB |
118 | #ifdef UNEXEC |
119 | #undef UNEXEC | |
120 | #endif | |
121 | #define UNEXEC unexelfsgi.o | |
4ef37be4 JB |
122 | |
123 | #define TEXT_START 0x400000 | |
124 | ||
125 | /* | |
126 | * DATA_SEG_BITS forces that bit to be or'd in with any pointers which | |
127 | * are trying to access pure strings (as gnu-emacs only allows 24 bits | |
128 | * for the value field of a LISP_OBJECT). | |
129 | */ | |
130 | ||
131 | #define DATA_START 0x10000000 | |
132 | #define DATA_SEG_BITS 0x10000000 | |
133 | ||
134 | #undef LIBS_MACHINE | |
135 | /* -lsun in case using Yellow Pages for passwords. */ | |
136 | #define LIBS_MACHINE -lsun -lmld | |
137 | #define LIBS_DEBUG | |
138 | ||
139 | /* Define this if you have a fairly recent system, | |
140 | in which crt1.o and crt1.n should be used. */ | |
141 | #define HAVE_CRTN | |
142 | ||
143 | #ifdef HAVE_CRTN | |
144 | /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */ | |
145 | #define START_FILES pre-crt0.o /usr/lib/crt1.o | |
146 | #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o | |
147 | #else | |
148 | #define START_FILES pre-crt0.o /usr/lib/crt0.o | |
149 | /* The entry-point label (start of text segment) is `start', not `__start'. */ | |
150 | #define DEFAULT_ENTRY_ADDRESS start | |
151 | #define LIB_STANDARD -lbsd -lc | |
152 | #endif | |
153 | \f | |
154 | /* Use terminfo instead of termcap. */ | |
155 | ||
156 | #define TERMINFO | |
157 | ||
158 | /* sioctl.h should be included where appropriate. */ | |
159 | ||
160 | #define NEED_SIOCTL | |
161 | ||
162 | /* Letter to use in finding device name of first pty, | |
163 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
164 | ||
165 | #undef FIRST_PTY_LETTER | |
166 | #define FIRST_PTY_LETTER 'q' | |
167 | ||
168 | /* Define STACK_DIRECTION for alloca.c */ | |
169 | ||
170 | #define STACK_DIRECTION -1 | |
171 | \f | |
172 | /* The standard definitions of these macros would work ok, | |
173 | but these are faster because the constants are short. */ | |
174 | ||
175 | #define XUINT(a) (((unsigned)(a) << INTBITS-VALBITS) >> INTBITS-VALBITS) | |
176 | ||
177 | #define XSET(var, type, ptr) \ | |
178 | ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << INTBITS-VALBITS) >> INTBITS-VALBITS)) | |
179 | ||
180 | #define XSETINT(a, b) XSET(a, XTYPE(a), b) | |
181 | #define XSETUINT(a, b) XSET(a, XTYPE(a), b) | |
182 | #define XSETPNTR(a, b) XSET(a, XTYPE(a), b) | |
183 | ||
184 | #define XMARKBIT(a) ((a) < 0) | |
185 | #define XSETMARKBIT(a,b) ((a) = ((a) & ~MARKBIT) | ((b) ? MARKBIT : 0)) | |
186 | #define XUNMARK(a) ((a) = (((unsigned)(a) << INTBITS-GCTYPEBITS-VALBITS) >> INTBITS-GCTYPEBITS-VALBITS)) | |
187 | ||
94823a5e | 188 | #ifndef __GNUC__ |
4ef37be4 JB |
189 | /* Turn off some "helpful" error checks for type mismatches |
190 | that we can't fix without breaking other machines. */ | |
191 | #define C_SWITCH_MACHINE -cckr | |
94823a5e | 192 | #endif |