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eb8c3be9 | 1 | /* machine description file for National Semiconductor 32000, running Genix. |
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2 | Copyright (C) 1985, 1986 Free Software Foundation, Inc. |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
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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) | |
9 | any later version. | |
10 | ||
20c428fd | 11 | GNU Emacs is distributed in the hope that it will be useful, |
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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 | ||
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20 | |
21 | ||
22 | /* The following line tells the configuration script what sort of | |
23 | operating system this machine is likely to run. | |
24 | USUAL-OPSYS="usg5-2" */ | |
25 | ||
26 | /* The following three symbols give information on | |
27 | the size of various data types. */ | |
28 | ||
29 | #define SHORTBITS 16 /* Number of bits in a short */ | |
30 | ||
31 | #define INTBITS 32 /* Number of bits in an int */ | |
32 | ||
33 | #define LONGBITS 32 /* Number of bits in a long */ | |
34 | ||
35 | /* Define BIG_ENDIAN iff lowest-numbered byte in a word | |
36 | is the most significant byte. */ | |
37 | ||
38 | /* #define BIG_ENDIAN */ | |
39 | ||
40 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a | |
41 | * group of arguments and treat it as an array of the arguments. */ | |
42 | ||
43 | /* #define NO_ARG_ARRAY */ | |
44 | ||
45 | /* Define WORD_MACHINE if addresses and such have | |
46 | * to be corrected before they can be used as byte counts. */ | |
47 | ||
48 | /* #define WORD_MACHINE */ | |
49 | ||
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50 | /* Now define a symbol for the cpu type, if your compiler |
51 | does not define it automatically: | |
52 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
53 | orion, tahoe, APOLLO and many others */ | |
54 | ||
55 | /* Use type int rather than a union, to represent Lisp_Object */ | |
56 | /* This is desirable for most machines. */ | |
57 | ||
58 | #define NO_UNION_TYPE | |
59 | ||
60 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
61 | the 24-bit bit field into an int. In other words, if bit fields | |
62 | are always unsigned. | |
63 | ||
64 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
65 | ||
66 | #define EXPLICIT_SIGN_EXTEND | |
67 | ||
68 | /* Data type of load average, as read out of kmem. */ | |
69 | ||
70 | /* #define LOAD_AVE_TYPE long */ | |
71 | ||
72 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
73 | ||
74 | /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */ | |
75 | ||
76 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
77 | Then the function dump-emacs will not be defined | |
78 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
79 | ||
80 | /* #define CANNOT_DUMP */ | |
81 | ||
82 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
83 | pure and impure space as loaded can vary, and even their | |
84 | relative order cannot be relied on. | |
85 | ||
86 | Otherwise Emacs assumes that text space precedes data space, | |
87 | numerically. */ | |
88 | ||
89 | /* #define VIRT_ADDR_VARIES */ | |
90 | ||
91 | /* Define C_ALLOCA if this machine does not support a true alloca | |
92 | and the one written in C should be used instead. | |
93 | Define HAVE_ALLOCA to say that the system provides a properly | |
94 | working alloca function and it should be used. | |
95 | Define neither one if an assembler-language alloca | |
96 | in the file alloca.s should be used. */ | |
97 | ||
98 | /* #define C_ALLOCA */ | |
99 | /* #define HAVE_ALLOCA */ | |
100 | ||
101 | /* Define NO_REMAP if memory segmentation makes it not work well | |
102 | to change the boundary between the text section and data section | |
103 | when Emacs is dumped. If you define this, the preloaded Lisp | |
104 | code will not be sharable; but that's better than failing completely. */ | |
105 | ||
106 | /* #define NO_REMAP */ | |
107 | ||
108 | #define TEXT_START 0 | |
109 | ||
110 | #define STACK_DIRECTION -1 | |
111 | ||
112 | #define EXEC_MAGIC 0410 | |
113 | ||
114 | #define PURESIZE 140000 | |
115 | ||
116 | #define START_FILES pre-crt0.o /lib/crt0.o |