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1 | /* Handcrafted m-mac.h file for building GNU Emacs on the Macintosh. |
2 | Copyright (C) 1999, 2000 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 | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
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, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
e0f712ba | 21 | /* Contributed by Andrew Choi (akochoi@mac.com). */ |
1a578e9b | 22 | |
177c0ea7 | 23 | /* The following line tells the configuration script what sort of |
1a578e9b AC |
24 | operating system this machine is likely to run. |
25 | USUAL-OPSYS="<name of system .h file here, without the s- or .h>" */ | |
26 | ||
27 | /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word | |
28 | is the most significant byte. */ | |
29 | ||
30 | #define WORDS_BIG_ENDIAN | |
31 | ||
32 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a | |
33 | * group of arguments and treat it as an array of the arguments. */ | |
34 | ||
35 | #define NO_ARG_ARRAY | |
36 | ||
37 | /* Define WORD_MACHINE if addresses and such have | |
38 | * to be corrected before they can be used as byte counts. */ | |
39 | ||
40 | /* #define WORD_MACHINE */ | |
41 | ||
42 | /* Now define a symbol for the cpu type, if your compiler | |
43 | does not define it automatically: | |
44 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
45 | orion, tahoe, APOLLO and many others */ | |
46 | ||
47 | /* Use type int rather than a union, to represent Lisp_Object */ | |
48 | /* This is desirable for most machines. */ | |
49 | ||
50 | #define NO_UNION_TYPE | |
51 | ||
52 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
53 | the 24-bit bit field into an int. In other words, if bit fields | |
54 | are always unsigned. | |
55 | ||
56 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
57 | ||
58 | #define EXPLICIT_SIGN_EXTEND | |
59 | ||
60 | /* Data type of load average, as read out of kmem. */ | |
61 | ||
62 | /* #define LOAD_AVE_TYPE long */ | |
63 | ||
64 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
65 | ||
66 | /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */ | |
67 | ||
68 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
69 | Then the function dump-emacs will not be defined | |
70 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
71 | ||
72 | #define CANNOT_DUMP | |
73 | ||
74 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
75 | pure and impure space as loaded can vary, and even their | |
76 | relative order cannot be relied on. | |
77 | ||
78 | Otherwise Emacs assumes that text space precedes data space, | |
79 | numerically. */ | |
80 | ||
81 | #define VIRT_ADDR_VARIES | |
82 | ||
83 | /* Define C_ALLOCA if this machine does not support a true alloca | |
84 | and the one written in C should be used instead. | |
85 | Define HAVE_ALLOCA to say that the system provides a properly | |
86 | working alloca function and it should be used. | |
87 | Define neither one if an assembler-language alloca | |
88 | in the file alloca.s should be used. */ | |
89 | ||
90 | #define C_ALLOCA | |
91 | /* #define HAVE_ALLOCA */ | |
92 | ||
93 | /* Define NO_REMAP if memory segmentation makes it not work well | |
94 | to change the boundary between the text section and data section | |
95 | when Emacs is dumped. If you define this, the preloaded Lisp | |
96 | code will not be sharable; but that's better than failing completely. */ | |
97 | ||
98 | /* #define NO_REMAP */ | |
99 | ||
100 | /* Some really obscure 4.2-based systems (like Sequent DYNIX) | |
101 | * do not support asynchronous I/O (using SIGIO) on sockets, | |
102 | * even though it works fine on tty's. If you have one of | |
103 | * these systems, define the following, and then use it in | |
104 | * config.h (or elsewhere) to decide when (not) to use SIGIO. | |
105 | * | |
106 | * You'd think this would go in an operating-system description file, | |
107 | * but since it only occurs on some, but not all, BSD systems, the | |
108 | * reasonable place to select for it is in the machine description | |
109 | * file. | |
110 | */ | |
111 | ||
112 | #define NO_SOCK_SIGIO | |
113 | ||
114 | ||
115 | /* After adding support for a new system, modify the large case | |
116 | statement in the `configure' script to recognize reasonable | |
117 | configuration names, and add a description of the system to | |
118 | `etc/MACHINES'. | |
119 | ||
120 | If you've just fixed a problem in an existing configuration file, | |
121 | you should also check `etc/MACHINES' to make sure its descriptions | |
122 | of known problems in that configuration should be updated. */ | |
123 | ||
124 | /* MPW build crashes if this is not defined. */ | |
125 | #ifdef __MRC__ | |
126 | #define IEEE_FLOATING_POINT 1 | |
127 | #endif | |
128 | ||
129 | #if 0 | |
130 | /* The usual definition of XINT, which involves shifting, does not | |
131 | sign-extend properly on this machine. */ | |
132 | ||
133 | #define XINT(i) (((sign_extend_temp=(i)) & 0x00800000) \ | |
134 | ? (sign_extend_temp | 0xFF000000) \ | |
135 | : (sign_extend_temp & 0x00FFFFFF)) | |
136 | ||
137 | #ifdef emacs /* Don't do this when making xmakefile! */ | |
138 | extern int sign_extend_temp; | |
139 | #endif | |
140 | #endif |