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1.1 root 1: /* m- file for the NCR Tower 32 running System V.3.
2: Copyright (C) 1986 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: /* #define 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: /* #define 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: vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
53: are the ones defined so far. */
54: #define m68000
55:
56: /* Use type int rather than a union, to represent Lisp_Object */
57: /* This is desirable for most machines. */
58:
59: #define NO_UNION_TYPE
60:
61: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
62: the 24-bit bit field into an int. In other words, if bit fields
63: are always unsigned.
64:
65: If you use NO_UNION_TYPE, this flag does not matter. */
66:
67: #define EXPLICIT_SIGN_EXTEND
68:
69: /* Data type of load average, as read out of kmem. */
70:
71: /* #define LOAD_AVE_TYPE long */
72:
73: /* Convert that into an integer that is 100 for a load average of 1.0 */
74:
75: /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
76:
77: /* Define CANNOT_DUMP on machines where unexec does not work.
78: Then the function dump-emacs will not be defined
79: and temacs will do (load "loadup") automatically unless told otherwise. */
80:
81: /* #define CANNOT_DUMP */
82:
83: /* Define VIRT_ADDR_VARIES if the virtual addresses of
84: pure and impure space as loaded can vary, and even their
85: relative order cannot be relied on.
86:
87: Otherwise Emacs assumes that text space precedes data space,
88: numerically. */
89:
90: /* #define VIRT_ADDR_VARIES */
91:
92: /* Define C_ALLOCA if this machine does not support a true alloca
93: and the one written in C should be used instead.
94: Define HAVE_ALLOCA to say that the system provides a properly
95: working alloca function and it should be used.
96: Define neither one if an assembler-language alloca
97: in the file alloca.s should be used. */
98:
99: #ifdef __GNUC__
100: #define HAVE_ALLOCA
101: #define alloca __builtin_alloca
102: #define C_OPTIMIZE_SWITCH -O -fstrength-reduce -fomit-frame-pointer
103: #define LIB_STANDARD -lc /lib/crtn.o
104: #else
105: /* This section is correct if you do *not* change src/ymakefile so that
106: CFLAGS includes C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH. */
107: #define HAVE_ALLOCA
108: #define C_DEBUG_SWITCH -g -O0
109: #define LIB_STANDARD -lc -lPW /lib/crtn.o
110: /* This section is correct if you do enable C_OPTIMIZE_SWITCH. */
111: /* #define C_ALLOCA */
112: /* #define STACK_DIRECTION -1 */
113: /* #define C_OPTIMIZE_SWITCH -O2 */
114: /* #define LIB_STANDARD -lc /lib/crtn.o */
115: #endif
116:
117: /* The OS maps the data section far away from the text section. */
118: #define NO_REMAP
119: #define TEXT_START 0
120: #undef static
121: #define START_FILES pre-crt0.o /lib/crt1.o
122:
123: /* This is needed since many Tower models start the data/bss segment at
124: an address as large as 0x2000000. */
125: #define VALBITS 26
126: #define GCTYPEBITS 5
127:
128: /* The OS has an implementation of symlinks that is semantically different
129: from BSD, but for some silly reason it partly has the same syntax. */
130: #undef S_IFLNK
131:
132: /* The OS needs stream.h+ptem.h included in sysdep.c. */
133: #define NO_SIOCTL_H
134: #define NEED_PTEM_H
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