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5c3c0887 | 1 | /* machine description file for Iris-4D machines. Use with s/irix*.h. |
aaef169d TTN |
2 | Copyright (C) 1987, 2002, 2003, 2004, 2005, |
3 | 2006 Free Software Foundation, Inc. | |
20c428fd JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
17385adc | 9 | the Free Software Foundation; either version 2, or (at your option) |
20c428fd JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
364c38d3 LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
20c428fd JB |
21 | |
22 | ||
74d3f806 KH |
23 | /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word |
24 | is the most significant byte. */ | |
25 | ||
26 | #define WORDS_BIG_ENDIAN | |
27 | ||
20c428fd JB |
28 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a |
29 | * group of arguments and treat it as an array of the arguments. */ | |
30 | ||
31 | #define NO_ARG_ARRAY | |
32 | ||
33 | /* Define WORD_MACHINE if addresses and such have | |
34 | * to be corrected before they can be used as byte counts. */ | |
35 | ||
36 | #undef WORD_MACHINE | |
37 | ||
20c428fd JB |
38 | /* Now define a symbol for the cpu type, if your compiler |
39 | does not define it automatically: | |
40 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
41 | orion, tahoe, APOLLO and many others */ | |
42 | ||
43 | #ifndef mips | |
44 | #define mips | |
45 | #endif | |
46 | ||
47 | #ifndef IRIS_4D | |
48 | #define IRIS_4D | |
49 | #endif | |
50 | ||
51 | /* Use type int rather than a union, to represent Lisp_Object */ | |
52 | /* This is desirable for most machines. */ | |
53 | ||
54 | #define NO_UNION_TYPE | |
55 | ||
56 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
aa24c41b | 57 | the bit field into an int. In other words, if bit fields |
20c428fd JB |
58 | are always unsigned. |
59 | ||
60 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
61 | ||
62 | #define EXPLICIT_SIGN_EXTEND | |
63 | ||
7af17c1c JB |
64 | /* jg@genmagic.genmagic.com (John Giannandrea) says this is unnecessary. */ |
65 | #if 0 | |
20c428fd JB |
66 | /* Data type of load average, as read out of kmem. */ |
67 | ||
68 | #define LOAD_AVE_TYPE long /* This doesn't quite work on the 4D */ | |
69 | ||
70 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
71 | ||
72 | #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0) | |
73 | ||
74 | /* s-iris3-6.h uses /vmunix */ | |
75 | ||
76 | #undef KERNEL_FILE | |
77 | #define KERNEL_FILE "/unix" | |
7af17c1c | 78 | #endif |
20c428fd JB |
79 | |
80 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
81 | Then the function dump-emacs will not be defined | |
82 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
83 | ||
84 | #undef CANNOT_DUMP | |
85 | ||
86 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
87 | pure and impure space as loaded can vary, and even their | |
88 | relative order cannot be relied on. | |
89 | ||
90 | Otherwise Emacs assumes that text space precedes data space, | |
91 | numerically. */ | |
92 | ||
93 | /* #define VIRT_ADDR_VARIES */ | |
94 | ||
20c428fd JB |
95 | /* Define NO_REMAP if memory segmentation makes it not work well |
96 | to change the boundary between the text section and data section | |
97 | when Emacs is dumped. If you define this, the preloaded Lisp | |
98 | code will not be sharable; but that's better than failing completely. */ | |
99 | ||
100 | #define NO_REMAP | |
101 | ||
102 | /* This machine requires completely different unexec code | |
103 | which lives in a separate file. Specify the file name. */ | |
104 | ||
b2fe4ec6 RS |
105 | #ifdef USG5_4 |
106 | #undef UNEXEC | |
2bf57b13 | 107 | #define UNEXEC unexelf.o |
b2fe4ec6 | 108 | #else |
20c428fd | 109 | #define UNEXEC unexmips.o |
b2fe4ec6 | 110 | #endif |
20c428fd JB |
111 | |
112 | #define TEXT_START 0x400000 | |
113 | ||
114 | /* | |
aa24c41b KH |
115 | * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which |
116 | * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for | |
117 | * the value field of a LISP_OBJECT). | |
20c428fd JB |
118 | */ |
119 | ||
120 | #define DATA_START 0x10000000 | |
121 | #define DATA_SEG_BITS 0x10000000 | |
122 | ||
123 | #undef LIBS_MACHINE | |
124 | /* -lsun in case using Yellow Pages for passwords. */ | |
42f30377 RS |
125 | #if defined(__GNUC__) && defined(_ABIN32) |
126 | #define LIBS_MACHINE | |
127 | #else | |
a6851a5b | 128 | #ifndef IRIX6_5 |
d492fe70 | 129 | #define LIBS_MACHINE -lmld |
a6851a5b KH |
130 | #else |
131 | #define LIBS_MACHINE | |
132 | #endif | |
42f30377 | 133 | #endif |
20c428fd JB |
134 | #define LIBS_DEBUG |
135 | ||
136 | /* Define this if you have a fairly recent system, | |
137 | in which crt1.o and crt1.n should be used. */ | |
138 | #define HAVE_CRTN | |
139 | ||
b2fe4ec6 | 140 | #ifndef USG5_4 |
20c428fd JB |
141 | #ifdef HAVE_CRTN |
142 | /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */ | |
143 | #define START_FILES pre-crt0.o /usr/lib/crt1.o | |
1319549a | 144 | #define LIB_STANDARD -lc /usr/lib/crtn.o |
20c428fd JB |
145 | #else |
146 | #define START_FILES pre-crt0.o /usr/lib/crt0.o | |
147 | /* The entry-point label (start of text segment) is `start', not `__start'. */ | |
148 | #define DEFAULT_ENTRY_ADDRESS start | |
1319549a | 149 | #define LIB_STANDARD -lc |
20c428fd | 150 | #endif |
b2fe4ec6 | 151 | #endif |
20c428fd JB |
152 | \f |
153 | /* Use terminfo instead of termcap. */ | |
154 | ||
155 | #define TERMINFO | |
156 | ||
20c428fd JB |
157 | /* Letter to use in finding device name of first pty, |
158 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
159 | ||
160 | #undef FIRST_PTY_LETTER | |
161 | #define FIRST_PTY_LETTER 'q' | |
20c428fd | 162 | \f |
149f3ffd DL |
163 | #if _MIPS_SZLONG != 64 |
164 | /* fixme: should there be 64-bit defiitions? (The ones below aren't | |
165 | OK.) */ | |
166 | ||
20c428fd JB |
167 | /* The standard definitions of these macros would work ok, |
168 | but these are faster because the constants are short. */ | |
169 | ||
5964b664 | 170 | #define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS) |
20c428fd JB |
171 | |
172 | #define XSET(var, type, ptr) \ | |
5964b664 | 173 | ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)) |
a6616745 | 174 | #endif /* _LP64 */ |
23b0668c | 175 | |
00c582c7 | 176 | #ifndef __GNUC__ |
23b0668c JB |
177 | /* Turn off some "helpful" error checks for type mismatches |
178 | that we can't fix without breaking other machines. */ | |
5c3c0887 | 179 | #ifdef IRIX_FORCE_32_BITS |
013961a1 | 180 | #ifdef THIS_IS_MAKEFILE |
a6851a5b | 181 | #ifndef IRIX6_5 |
5c3c0887 | 182 | #define C_SWITCH_MACHINE -32 |
a6851a5b | 183 | #else |
f2f4685a | 184 | #define C_SWITCH_MACHINE -n32 |
a6851a5b | 185 | #endif |
00c582c7 | 186 | #endif |
013961a1 | 187 | #endif |
5c3c0887 RS |
188 | |
189 | #endif /* not __GNUC__ */ | |
ab5796a9 MB |
190 | |
191 | /* arch-tag: fff5e139-9ae0-465d-afec-837c41ea0aa6 | |
192 | (do not change this comment) */ |