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1.1 root 1: /* m- file for Cydrome's CYDRA 5 mini super computer
2: Copyright (C) 1988 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20:
21: /* The following three symbols give information on
22: the size of various data types. */
23:
24: #define SHORTBITS 16 /* Number of bits in a short */
25:
26: #define INTBITS 32 /* Number of bits in an int */
27:
28: #define LONGBITS 32 /* Number of bits in a long */
29:
30: /* Define BIG_ENDIAN iff lowest-numbered byte in a word
31: is the most significant byte. */
32:
33: #define BIG_ENDIAN
34:
35: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
36: * group of arguments and treat it as an array of the arguments. */
37:
38: #undef NO_ARG_ARRAY
39:
40: /* Define WORD_MACHINE if addresses and such have
41: * to be corrected before they can be used as byte counts. */
42:
43: #undef WORD_MACHINE
44:
45: /* Define how to take a char and sign-extend into an int.
46: On machines where char is signed, this is a no-op. */
47:
48: #define SIGN_EXTEND_CHAR(c) (c)
49:
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) x
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 data space precedes text space,
87: numerically. */
88:
89: #undef 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: #undef HAVE_ALLOCA
100:
101: /* The data segment in this machine always starts at address 0x10000000.
102: An address of data cannot be stored correctly in a Lisp object;
103: we always lose the high bits. We must tell XPNTR to add them back. */
104:
105: #define DATA_SEG_BITS 0x20000000
106: #define DATA_START 0x20000000
107:
108: /* Define NO_REMAP if memory segmentation makes it not work well
109: to change the boundary between the text section and data section
110: when Emacs is dumped. If you define this, the preloaded Lisp
111: code will not be sharable; but that's better than failing completely. */
112:
113: #define NO_REMAP
114: #define BROKEN_FIONREAD /* We son't even have it */
115: #define LIBS_MACHINE -lsocket -lnsl
116:
117: /* Stack grows downward in memory. */
118: #define STACK_DIRECTION -1
119:
120: /* The data section in a coff file must be aligned in the file. */
121: #define DATA_SECTION_ALIGNMENT 0xFFF
122:
123: /* Compiler won't allow switch (x) when x is an enum. */
124: #define SWITCH_ENUM_BUG
125:
126:
127: /* Explain how pty filenames work. */
128:
129: #define PTY_ITERATION for (i = 47; i >= 0; i--)
130: #define PTY_NAME_SPRINTF sprintf (pty_name, "/dev/pty%03x", i);
131: #define PTY_TTY_NAME_SPRINTF sprintf (pty_name, "/dev/ptm%03x", i);
132:
133: /* We can't do interrupt-driven input, so don't let user try. */
134:
135: #undef SIGIO
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