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1 | /* ibm370.h |
2 | For IBM 3090 type systems running AIX370. | |
3 | Concocted by Scott Schwartz <schwartz@cs.psu.edu> | |
4 | Copyright (C) 1985, 1986 Free Software Foundation, Inc. | |
5 | ||
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is distributed in the hope that it will be useful, | |
9 | but WITHOUT ANY WARRANTY. No author or distributor | |
10 | accepts responsibility to anyone for the consequences of using it | |
11 | or for whether it serves any particular purpose or works at all, | |
12 | unless he says so in writing. Refer to the GNU Emacs General Public | |
13 | License for full details. | |
14 | ||
15 | Everyone is granted permission to copy, modify and redistribute | |
16 | GNU Emacs, but only under the conditions described in the | |
17 | GNU Emacs General Public License. A copy of this license is | |
18 | supposed to have been given to you along with GNU Emacs so you | |
19 | can know your rights and responsibilities. It should be in a | |
20 | file named COPYING. Among other things, the copyright notice | |
21 | and this notice must be preserved on all copies. */ | |
22 | ||
23 | ||
24 | /* The following three symbols give information on | |
25 | the size of various data types. */ | |
26 | ||
27 | #define SHORTBITS 16 /* Number of bits in a short */ | |
28 | ||
29 | #define INTBITS 32 /* Number of bits in an int */ | |
30 | ||
31 | #define LONGBITS 32 /* Number of bits in a long */ | |
32 | ||
33 | /* Define BIG_ENDIAN iff lowest-numbered byte in a word | |
34 | is the most significant byte. */ | |
35 | ||
36 | #define BIG_ENDIAN | |
37 | ||
38 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a | |
39 | * group of arguments and treat it as an array of the arguments. */ | |
40 | ||
41 | #define NO_ARG_ARRAY | |
42 | ||
43 | /* Define WORD_MACHINE if addresses and such have | |
44 | * to be corrected before they can be used as byte counts. */ | |
45 | ||
46 | /* #define WORD_MACHINE */ | |
47 | ||
48 | /* Define how to take a char and sign-extend into an int. | |
49 | On machines where char is signed, this is a no-op. */ | |
50 | ||
51 | #define SIGN_EXTEND_CHAR(c) (((c) & 0x80) ? ((c) | 0xffffff80) : (c)) | |
52 | ||
53 | /* Now define a symbol for the cpu type, if your compiler | |
54 | does not define it automatically: | |
55 | Ones defined so far include vax, m68000, ns16000, pyramid, | |
56 | orion, tahoe, APOLLO and many others */ | |
57 | /* high-c defines _AIX370 */ | |
58 | ||
59 | /* Use type int rather than a union, to represent Lisp_Object */ | |
60 | /* This is desirable for most machines. */ | |
61 | ||
62 | #define NO_UNION_TYPE | |
63 | ||
64 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
65 | the 24-bit bit field into an int. In other words, if bit fields | |
66 | are always unsigned. | |
67 | ||
68 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
69 | ||
70 | #define EXPLICIT_SIGN_EXTEND | |
71 | ||
72 | /* Data type of load average, as read out of kmem. */ | |
73 | ||
74 | #define LOAD_AVE_TYPE double | |
75 | ||
76 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
77 | ||
78 | /* XXX */ | |
79 | #define LOAD_AVE_CVT(x) (int)(((double) (x)) * 100.0 / 1.0) | |
80 | ||
81 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
82 | Then the function dump-emacs will not be defined | |
83 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
84 | ||
85 | #define CANNOT_DUMP | |
86 | #define CANNOT_UNEXEC | |
87 | ||
88 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
89 | pure and impure space as loaded can vary, and even their | |
90 | relative order cannot be relied on. | |
91 | ||
92 | Otherwise Emacs assumes that text space precedes data space, | |
93 | numerically. */ | |
94 | ||
95 | #define VIRT_ADDR_VARIES | |
96 | ||
97 | /* Define C_ALLOCA if this machine does not support a true alloca | |
98 | and the one written in C should be used instead. | |
99 | Define HAVE_ALLOCA to say that the system provides a properly | |
100 | working alloca function and it should be used. | |
101 | Define neither one if an assembler-language alloca | |
102 | in the file alloca.s should be used. */ | |
103 | ||
104 | /* #define C_ALLOCA */ | |
105 | #define HAVE_ALLOCA | |
106 | ||
107 | #ifndef NO_SHORTNAMES | |
108 | #include <alloca.h> | |
109 | #include <setjmp.h> | |
110 | #endif | |
111 | ||
112 | /* Define NO_REMAP if memory segmentation makes it not work well | |
113 | to change the boundary between the text section and data section | |
114 | when Emacs is dumped. If you define this, the preloaded Lisp | |
115 | code will not be sharable; but that's better than failing completely. */ | |
116 | ||
117 | #define NO_REMAP | |
118 | ||
119 | /* Don't try to include sioctl.h. */ | |
120 | #undef NEED_SIOCTL | |
121 | /* That probably means we shouldn't try ptem.h either. */ | |
122 | #undef NEED_PTEM_H | |
123 | ||
124 | /* Note we do not define IBMAIX, since the `hft' features | |
125 | don't exist on this machine. */ | |
126 | ||
127 | #define LIBS_DEBUG -lg | |
128 | #ifndef LD_SWITCH_SYSTEM | |
129 | #define LD_SWITCH_SYSTEM | |
130 | #endif | |
131 | ||
132 | #define LIBS_SYSTEM -lbsd | |
133 | ||
134 | /* The symbol in the kernel where the load average is found | |
135 | is named _avenrun. */ | |
136 | ||
137 | #undef LDAV_SYMBOL | |
138 | #define LDAV_SYMBOL "_avenrun" | |
139 | ||
140 | /* define MAIL_USE_FLOCK if the mailer uses flock | |
141 | to interlock access to /usr/spool/mail/$USER. | |
142 | The alternative is that a lock file named | |
143 | /usr/spool/mail/$USER.lock. */ | |
144 | #define MAIL_USE_FLOCK | |
145 | ||
146 | /* Define CLASH_DETECTION if you want lock files to be written | |
147 | so that Emacs can tell instantly when you try to modify | |
148 | a file that someone else has modified in his Emacs. */ | |
149 | #define CLASH_DETECTION | |
150 | ||
151 | #define BSTRING | |
152 | ||
153 | /* First pty name is /dev/ptyp0. */ | |
154 | #define FIRST_PTY_LETTER 'p' | |
155 | ||
156 | /* | |
157 | * Define HAVE_TIMEVAL if the system supports the BSD style clock values. | |
158 | * Look in <sys/time.h> for a timeval structure. | |
159 | */ | |
160 | #define HAVE_TIMEVAL | |
161 | ||
162 | /* | |
163 | * Define HAVE_SELECT if the system supports the `select' system call. | |
164 | */ | |
165 | #define HAVE_SELECT | |
166 | ||
167 | /* | |
168 | * Define HAVE_PTYS if the system supports pty devices. | |
169 | */ | |
170 | #define HAVE_PTYS | |
171 | ||
172 | /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */ | |
173 | ||
174 | #define HAVE_SOCKETS |