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1.1 root 1: /* m- file for Gould with UTX/32 2.0. (See MACHINES for older versions.)
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:
53: #ifndef GOULD
54: #define GOULD
55: #endif
56:
57: /* Use type int rather than a union, to represent Lisp_Object */
58: /* This is desirable for most machines. */
59:
60: #define NO_UNION_TYPE
61:
62: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
63: the 24-bit bit field into an int. In other words, if bit fields
64: are always unsigned.
65:
66: If you use NO_UNION_TYPE, this flag does not matter. */
67:
68: #define EXPLICIT_SIGN_EXTEND
69:
70: /* Data type of load average, as read out of kmem. */
71:
72: #define LOAD_AVE_TYPE double
73:
74: /* Convert that into an integer that is 100 for a load average of 1.0 */
75:
76: #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)
77:
78: /* Define CANNOT_DUMP on machines where unexec does not work.
79: Then the function dump-emacs will not be defined
80: and temacs will do (load "loadup") automatically unless told otherwise. */
81:
82: /* #define CANNOT_DUMP */
83:
84: /* Define VIRT_ADDR_VARIES if the virtual addresses of
85: pure and impure space as loaded can vary, and even their
86: relative order cannot be relied on.
87:
88: Otherwise Emacs assumes that text space precedes data space,
89: numerically. */
90:
91: #define VIRT_ADDR_VARIES
92:
93: /* Define C_ALLOCA if this machine does not support a true alloca
94: and the one written in C should be used instead.
95: Define HAVE_ALLOCA to say that the system provides a properly
96: working alloca function and it should be used.
97: Define neither one if an assembler-language alloca
98: in the file alloca.s should be used. */
99:
100: #define C_ALLOCA
101: #define STACK_DIRECTION -1 /* grows towards lower addresses on Gould UTX/32 */
102:
103: /* No need to extend the user stack. */
104:
105: /* #define LD_SWITCH_MACHINE */
106:
107: /* -g is broken on the Gould. */
108:
109: #define C_DEBUG_SWITCH
110:
111: /* Comparing pointers as unsigned ints tickles a bug in older compilers. */
112:
113: #define PNTR_COMPARISON_TYPE int
114:
115: /* The GOULD machine counts the a.out file header as part of the text. */
116:
117: #define A_TEXT_OFFSET(HDR) sizeof (HDR)
118:
119: /* Machine-dependent action when about to dump an executable file. */
120:
121: #define ADJUST_EXEC_HEADER \
122: unexec_text_start = hdr.a_txbase + sizeof (hdr);
123:
124: /* We use the system's crt0.o. Somehow it avoids losing
125: with `environ' the way most standard crt0.o's do. */
126:
127: #define START_FILES pre-crt0.o /lib/crt0.o
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