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5c3c0887 | 1 | /* machine description file for Iris-4D machines. Use with s/irix*.h. |
6b61353c | 2 | Copyright (C) 1987, 2002, 2003 Free Software Foundation, Inc. |
20c428fd JB |
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) |
20c428fd 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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
20c428fd JB |
20 | |
21 | ||
74d3f806 KH |
22 | /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word |
23 | is the most significant byte. */ | |
24 | ||
25 | #define WORDS_BIG_ENDIAN | |
26 | ||
20c428fd JB |
27 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a |
28 | * group of arguments and treat it as an array of the arguments. */ | |
29 | ||
30 | #define NO_ARG_ARRAY | |
31 | ||
32 | /* Define WORD_MACHINE if addresses and such have | |
33 | * to be corrected before they can be used as byte counts. */ | |
34 | ||
35 | #undef WORD_MACHINE | |
36 | ||
20c428fd JB |
37 | /* Now define a symbol for the cpu type, if your compiler |
38 | does not define it automatically: | |
39 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
40 | orion, tahoe, APOLLO and many others */ | |
41 | ||
42 | #ifndef mips | |
43 | #define mips | |
44 | #endif | |
45 | ||
46 | #ifndef IRIS_4D | |
47 | #define IRIS_4D | |
48 | #endif | |
49 | ||
50 | /* Use type int rather than a union, to represent Lisp_Object */ | |
51 | /* This is desirable for most machines. */ | |
52 | ||
53 | #define NO_UNION_TYPE | |
54 | ||
55 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
aa24c41b | 56 | the bit field into an int. In other words, if bit fields |
20c428fd JB |
57 | are always unsigned. |
58 | ||
59 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
60 | ||
61 | #define EXPLICIT_SIGN_EXTEND | |
62 | ||
7af17c1c JB |
63 | /* jg@genmagic.genmagic.com (John Giannandrea) says this is unnecessary. */ |
64 | #if 0 | |
20c428fd JB |
65 | /* Data type of load average, as read out of kmem. */ |
66 | ||
67 | #define LOAD_AVE_TYPE long /* This doesn't quite work on the 4D */ | |
68 | ||
69 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
70 | ||
71 | #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0) | |
72 | ||
73 | /* s-iris3-6.h uses /vmunix */ | |
74 | ||
75 | #undef KERNEL_FILE | |
76 | #define KERNEL_FILE "/unix" | |
7af17c1c | 77 | #endif |
20c428fd JB |
78 | |
79 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
80 | Then the function dump-emacs will not be defined | |
81 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
82 | ||
83 | #undef CANNOT_DUMP | |
84 | ||
85 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
86 | pure and impure space as loaded can vary, and even their | |
87 | relative order cannot be relied on. | |
88 | ||
89 | Otherwise Emacs assumes that text space precedes data space, | |
90 | numerically. */ | |
91 | ||
92 | /* #define VIRT_ADDR_VARIES */ | |
93 | ||
20c428fd JB |
94 | /* Define NO_REMAP if memory segmentation makes it not work well |
95 | to change the boundary between the text section and data section | |
96 | when Emacs is dumped. If you define this, the preloaded Lisp | |
97 | code will not be sharable; but that's better than failing completely. */ | |
98 | ||
99 | #define NO_REMAP | |
100 | ||
101 | /* This machine requires completely different unexec code | |
102 | which lives in a separate file. Specify the file name. */ | |
103 | ||
b2fe4ec6 RS |
104 | #ifdef USG5_4 |
105 | #undef UNEXEC | |
2bf57b13 | 106 | #define UNEXEC unexelf.o |
b2fe4ec6 | 107 | #else |
20c428fd | 108 | #define UNEXEC unexmips.o |
b2fe4ec6 | 109 | #endif |
20c428fd JB |
110 | |
111 | #define TEXT_START 0x400000 | |
112 | ||
113 | /* | |
aa24c41b KH |
114 | * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which |
115 | * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for | |
116 | * the value field of a LISP_OBJECT). | |
20c428fd JB |
117 | */ |
118 | ||
119 | #define DATA_START 0x10000000 | |
120 | #define DATA_SEG_BITS 0x10000000 | |
121 | ||
122 | #undef LIBS_MACHINE | |
123 | /* -lsun in case using Yellow Pages for passwords. */ | |
42f30377 RS |
124 | #if defined(__GNUC__) && defined(_ABIN32) |
125 | #define LIBS_MACHINE | |
126 | #else | |
a6851a5b | 127 | #ifndef IRIX6_5 |
d492fe70 | 128 | #define LIBS_MACHINE -lmld |
a6851a5b KH |
129 | #else |
130 | #define LIBS_MACHINE | |
131 | #endif | |
42f30377 | 132 | #endif |
20c428fd JB |
133 | #define LIBS_DEBUG |
134 | ||
135 | /* Define this if you have a fairly recent system, | |
136 | in which crt1.o and crt1.n should be used. */ | |
137 | #define HAVE_CRTN | |
138 | ||
b2fe4ec6 | 139 | #ifndef USG5_4 |
20c428fd JB |
140 | #ifdef HAVE_CRTN |
141 | /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */ | |
142 | #define START_FILES pre-crt0.o /usr/lib/crt1.o | |
1319549a | 143 | #define LIB_STANDARD -lc /usr/lib/crtn.o |
20c428fd JB |
144 | #else |
145 | #define START_FILES pre-crt0.o /usr/lib/crt0.o | |
146 | /* The entry-point label (start of text segment) is `start', not `__start'. */ | |
147 | #define DEFAULT_ENTRY_ADDRESS start | |
1319549a | 148 | #define LIB_STANDARD -lc |
20c428fd | 149 | #endif |
b2fe4ec6 | 150 | #endif |
20c428fd JB |
151 | \f |
152 | /* Use terminfo instead of termcap. */ | |
153 | ||
154 | #define TERMINFO | |
155 | ||
20c428fd JB |
156 | /* Letter to use in finding device name of first pty, |
157 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
158 | ||
159 | #undef FIRST_PTY_LETTER | |
160 | #define FIRST_PTY_LETTER 'q' | |
20c428fd | 161 | \f |
6b61353c KH |
162 | #if _MIPS_SZLONG != 64 |
163 | /* fixme: should there be 64-bit defiitions? (The ones below aren't | |
164 | OK.) */ | |
165 | ||
20c428fd JB |
166 | /* The standard definitions of these macros would work ok, |
167 | but these are faster because the constants are short. */ | |
168 | ||
5964b664 | 169 | #define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS) |
20c428fd JB |
170 | |
171 | #define XSET(var, type, ptr) \ | |
5964b664 | 172 | ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)) |
a6616745 | 173 | #endif /* _LP64 */ |
23b0668c | 174 | |
00c582c7 | 175 | #ifndef __GNUC__ |
23b0668c JB |
176 | /* Turn off some "helpful" error checks for type mismatches |
177 | that we can't fix without breaking other machines. */ | |
5c3c0887 | 178 | #ifdef IRIX_FORCE_32_BITS |
013961a1 | 179 | #ifdef THIS_IS_MAKEFILE |
a6851a5b | 180 | #ifndef IRIX6_5 |
5c3c0887 | 181 | #define C_SWITCH_MACHINE -32 |
a6851a5b | 182 | #else |
f2f4685a | 183 | #define C_SWITCH_MACHINE -n32 |
a6851a5b | 184 | #endif |
00c582c7 | 185 | #endif |
013961a1 | 186 | #endif |
5c3c0887 RS |
187 | |
188 | #endif /* not __GNUC__ */ | |
6b61353c KH |
189 | |
190 | /* arch-tag: fff5e139-9ae0-465d-afec-837c41ea0aa6 | |
191 | (do not change this comment) */ |