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20c428fd | 1 | /* machine description file for Data General AViiON. |
b908093d | 2 | Copyright (C) 1985, 1986, 1991, 2002, 2003, 2004, |
aaef169d | 3 | 2005, 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 | #define WORD_MACHINE | |
37 | ||
20c428fd JB |
38 | /* Define DATA_SEG_BITS if pointers need to be corrected with |
39 | a segment field. */ | |
40 | ||
41 | #ifdef FIX_ADDRESS | |
42 | #define DATA_SEG_BITS 0xef000000 | |
43 | #endif | |
44 | ||
45 | /* Now define a symbol for the cpu type, if your compiler | |
46 | does not define it automatically: | |
47 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
48 | orion, tahoe, APOLLO and many others */ | |
49 | ||
50 | #ifndef m88k | |
51 | #define m88k | |
52 | #endif | |
53 | ||
54 | /* Use type int rather than a union, to represent Lisp_Object */ | |
55 | /* This is desirable for most machines. */ | |
56 | ||
57 | #define NO_UNION_TYPE | |
58 | ||
59 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
09b3d662 | 60 | the bit field into an int. In other words, if bit fields |
20c428fd JB |
61 | are always unsigned. |
62 | ||
63 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
64 | ||
65 | #define EXPLICIT_SIGN_EXTEND | |
66 | ||
67 | /* Data type of load average, as read out of kmem. */ | |
68 | ||
69 | /* #define LOAD_AVE_TYPE long */ | |
70 | ||
71 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
72 | ||
73 | /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */ | |
74 | ||
75 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
76 | Then the function dump-emacs will not be defined | |
77 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
78 | ||
79 | /* #define CANNOT_DUMP */ | |
80 | ||
81 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
82 | pure and impure space as loaded can vary, and even their | |
83 | relative order cannot be relied on. | |
84 | ||
85 | Otherwise Emacs assumes that text space precedes data space, | |
86 | numerically. */ | |
87 | ||
88 | /* #define VIRT_ADDR_VARIES */ | |
89 | ||
20c428fd JB |
90 | #define alloca(x) __builtin_alloca(x) |
91 | ||
92 | /* Define NO_REMAP if memory segmentation makes it not work well | |
93 | to change the boundary between the text section and data section | |
94 | when Emacs is dumped. If you define this, the preloaded Lisp | |
95 | code will not be sharable; but that's better than failing completely. */ | |
96 | ||
97 | #define NO_REMAP | |
98 | ||
20c428fd JB |
99 | /* Define ADDR_CORRECT(ADDR) to be a macro to correct an int which is |
100 | the bit pattern of a pointer to a byte into an int which is the | |
101 | number of a byte. | |
102 | ||
103 | This macro has a default definition which is usually right. | |
104 | This default definition is a no-op on most machines (where a | |
105 | pointer looks like an int) but not on all machines. */ | |
106 | ||
107 | #define ADDR_CORRECT(ADDR) ((int)ADDR) | |
108 | ||
109 | /* Cast pointers to this type to compare them. */ | |
110 | ||
111 | #define PNTR_COMPARISON_TYPE void * | |
112 | ||
113 | /* Some machines that use COFF executables require that each section | |
114 | start on a certain boundary *in the COFF file*. Such machines should | |
115 | define SECTION_ALIGNMENT to a mask of the low-order bits that must be | |
116 | zero on such a boundary. This mask is used to control padding between | |
117 | segments in the COFF file. | |
118 | ||
119 | If SECTION_ALIGNMENT is not defined, the segments are written | |
120 | consecutively with no attempt at alignment. This is right for | |
121 | unmodified system V. */ | |
122 | ||
123 | #define SECTION_ALIGNMENT 0x7 | |
124 | ||
ab5796a9 MB |
125 | /* arch-tag: 9de8e6ed-ddd8-4480-8308-17ddd7c86559 |
126 | (do not change this comment) */ |