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1.1 root 1: /* m- file for Masscomp 5000 series running RTU, ucb universe.
2: Copyright (C) 1986 Free Software Foundation, Inc.
3:
4: This file is part of GNU Emacs.
5:
6: GNU Emacs is distributed in the hope that it will be useful,
7: but WITHOUT ANY WARRANTY. No author or distributor
8: accepts responsibility to anyone for the consequences of using it
9: or for whether it serves any particular purpose or works at all,
10: unless he says so in writing. Refer to the GNU Emacs General Public
11: License for full details.
12:
13: Everyone is granted permission to copy, modify and redistribute
14: GNU Emacs, but only under the conditions described in the
15: GNU Emacs General Public License. A copy of this license is
16: supposed to have been given to you along with GNU Emacs so you
17: can know your rights and responsibilities. It should be in a
18: file named COPYING. Among other things, the copyright notice
19: and this notice must be preserved on all copies. */
20:
21:
22: /* The following three symbols give information on
23: the size of various data types. */
24:
25: #define SHORTBITS 16 /* Number of bits in a short */
26:
27: #define INTBITS 32 /* Number of bits in an int */
28:
29: #define LONGBITS 32 /* Number of bits in a long */
30:
31: /* Define BIG_ENDIAN iff lowest-numbered byte in a word
32: is the most significant byte. */
33:
34: #define BIG_ENDIAN
35:
36: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
37: * group of arguments and treat it as an array of the arguments. */
38:
39: #undef NO_ARG_ARRAY
40:
41: /* Define WORD_MACHINE if addresses and such have
42: * to be corrected before they can be used as byte counts. */
43:
44: #undef WORD_MACHINE
45:
46: /* Define how to take a char and sign-extend into an int.
47: On machines where char is signed, this is a no-op. */
48:
49: #define SIGN_EXTEND_CHAR(c) (c)
50:
51: /* Now define a symbol for the cpu type, if your compiler
52: does not define it automatically:
53: vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
54: are the ones defined so far. */
55: /* Masscomp predefines mc68000. */
56: #define m68000 mc68000
57:
58: /* Use type int rather than a union, to represent Lisp_Object */
59: /* This is desirable for most machines. */
60:
61: #define NO_UNION_TYPE
62:
63: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
64: the 24-bit bit field into an int. In other words, if bit fields
65: are always unsigned.
66:
67: If you use NO_UNION_TYPE, this flag does not matter. */
68:
69: #undef EXPLICIT_SIGN_EXTEND
70:
71: /* Data type of load average, as read out of kmem. */
72:
73: #define LOAD_AVE_TYPE double
74:
75: /* Convert that into an integer that is 100 for a load average of 1.0 */
76:
77: #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
78:
79: /* Define CANNOT_DUMP on machines where unexec does not work.
80: Then the function dump-emacs will not be defined
81: and temacs will do (load "loadup") automatically unless told otherwise. */
82:
83: #undef CANNOT_DUMP
84:
85: /* Define VIRT_ADDR_VARIES if the virtual addresses of
86: pure and impure space as loaded can vary, and even their
87: relative order cannot be relied on.
88:
89: Otherwise Emacs assumes that text space precedes data space,
90: numerically. */
91:
92: #undef VIRT_ADDR_VARIES
93:
94: /* Define C_ALLOCA if this machine does not support a true alloca
95: and the one written in C should be used instead.
96: Define HAVE_ALLOCA to say that the system provides a properly
97: working alloca function and it should be used.
98: Define neither one if an assembler-language alloca
99: in the file alloca.s should be used. */
100:
101: /* On return from a subroutine, the 68020 compiler restores old contents of
102: register variables relative to sp, so alloca() screws up such routines.
103: The following definitions should work on all Masscomps. On the MC-5500
104: (a 68000) one can #undef C_ALLOCA and #define HAVE_ALLOCA. */
105: #ifdef mc500
106: #undef C_ALLOCA
107: #define HAVE_ALLOCA
108: #else
109: #define C_ALLOCA
110: #undef HAVE_ALLOCA
111: #endif
112:
113: /* Define NO_REMAP if memory segmentation makes it not work well
114: to change the boundary between the text section and data section
115: when Emacs is dumped. If you define this, the preloaded Lisp
116: code will not be sharable; but that's better than failing completely. */
117:
118: #undef NO_REMAP
119:
120: /* crt0.c should use the vax-bsd style of entry, with a dummy arg. */
121:
122: #define CRT0_DUMMIES bogus_fp,
123:
124: /* Name of file the to look in
125: for the kernel symbol table (for load average) */
126:
127: #define KERNEL_FILE "/unix"
128:
129: /* This triggers some stuff to avoid a compiler bug */
130:
131: #define MASSC_REGISTER_BUG
132:
133: /* Prevent -lg from being used for debugging. Not implemented? */
134:
135: #define LIBS_DEBUG
136:
137: /*
138: * Define HAVE_TERMIO if the system provides sysV-style ioctls
139: * for terminal control.
140: */
141:
142: #define HAVE_TERMIO
143:
144: /* Adjust a header field for the executable file about to be dumped. */
145:
146: #define ADJUST_EXEC_HEADER \
147: hdr.a_stamp = STAMP13; /* really want the latest stamp, whatever it is */
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