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1.1 root 1: /* m- file for intel 860.
2: Copyright (C) 1987 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: /* i860 is not big-endian: lowest numbered byte is least significant. */
31:
32: /* #undef BIG_ENDIAN */
33:
34: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
35: * group of arguments and treat it as an array of the arguments. */
36:
37: #define NO_ARG_ARRAY
38:
39: /* Define WORD_MACHINE if addresses and such have
40: * to be corrected before they can be used as byte counts. */
41:
42: /* #define WORD_MACHINE */
43:
44: /* Define how to take a char and sign-extend into an int.
45: On machines where char is signed, this is a no-op. */
46:
47: #define SIGN_EXTEND_CHAR(c) (c)
48:
49: /* Now define a symbol for the cpu type, if your compiler
50: does not define it automatically:
51: Ones defined so far include vax, m68000, ns16000, pyramid,
52: orion, tahoe, APOLLO and many others */
53:
54: #define INTEL860
55:
56: #undef DATA_SEG_BITS
57:
58: /* Use type int rather than a union, to represent Lisp_Object */
59:
60: #define NO_UNION_TYPE
61:
62: /* crt0.c, if it is used, should use the i386-bsd style of entry.
63: with no extra dummy args. On USG and XENIX,
64: NO_REMAP says this isn't used. */
65:
66: #define CRT0_DUMMIES bogus_fp,
67:
68: /* crt0.c should define a symbol `start' and do .globl with a dot. */
69:
70: #define DOT_GLOBAL_START
71:
72: /* These things for load average are right for USG V.4. */
73:
74: /* Data type of load average, as read out of kmem. */
75: #define LOAD_AVE_TYPE long
76: /* Convert that into an integer that is 100 for a load average of 1.0 */
77: #define LOAD_AVE_CVT(x) ((int) (((double) (x)) * 100.0 / FSCALE))
78: #define FSCALE 256.0 /* determined by experimentation... */
79:
80: /* Define CANNOT_DUMP on machines where unexec does not work.
81: Then the function dump-emacs will not be defined
82: and temacs will do (load "loadup") automatically unless told otherwise. */
83:
84: /* #define CANNOT_DUMP */
85:
86: /* Define VIRT_ADDR_VARIES if the virtual addresses of
87: pure and impure space as loaded can vary, and even their
88: relative order cannot be relied on.
89:
90: Otherwise Emacs assumes that text space precedes data space,
91: numerically. */
92:
93: /* #define VIRT_ADDR_VARIES */
94:
95:
96: #ifdef USG
97:
98: #ifndef LIB_STANDARD
99: #define LIB_STANDARD -lPW -lc
100: #endif
101:
102: #define C_ALLOCA
103: /* #define HAVE_ALLOCA */
104: #define NO_REMAP
105: #define TEXT_START 0
106: #endif /* USG */
107:
108: #ifdef BSD
109: #define HAVE_ALLOCA
110: #endif /* BSD */
111:
112: /* If compiling with GCC, let GCC implement alloca. */
113: #if defined(__GNUC__) && !defined(alloca)
114: #define alloca(n) __builtin_alloca(n)
115: #define HAVE_ALLOCA
116: #endif
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