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comparison src/m/aviion.h @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* machine description file for Data General AViiON.
2 Copyright (C) 1985, 1986, 1991 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 2, 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 XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Synched up with: FSF 19.31. */
22
23 /* Define WORD_MACHINE if addresses and such have
24 * to be corrected before they can be used as byte counts. */
25
26 #define WORD_MACHINE
27
28 /* Define DATA_SEG_BITS if pointers need to be corrected with
29 a segment field. */
30
31 #ifdef FIX_ADDRESS
32 #define DATA_SEG_BITS 0xef000000
33 #endif
34
35 /* Now define a symbol for the cpu type, if your compiler
36 does not define it automatically:
37 Ones defined so far include vax, m68000, ns16000, pyramid,
38 orion, tahoe, APOLLO and many others */
39
40 #ifndef m88k
41 #define m88k
42 #endif
43
44 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
45 the bit field into an int. In other words, if bit fields
46 are always unsigned.
47
48 If you use NO_UNION_TYPE, this flag does not matter. */
49
50 #define EXPLICIT_SIGN_EXTEND
51
52 /* Data type of load average, as read out of kmem. */
53
54 /* #define LOAD_AVE_TYPE long */
55
56 /* Convert that into an integer that is 100 for a load average of 1.0 */
57
58 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
59
60 /* Define CANNOT_DUMP on machines where unexec does not work.
61 Then the function dump-emacs will not be defined
62 and temacs will do (load "loadup") automatically unless told otherwise. */
63
64 /* #define CANNOT_DUMP */
65
66 /* Define VIRT_ADDR_VARIES if the virtual addresses of
67 pure and impure space as loaded can vary, and even their
68 relative order cannot be relied on.
69
70 Otherwise Emacs assumes that text space precedes data space,
71 numerically. */
72
73 /* #define VIRT_ADDR_VARIES */
74
75 /* Define C_ALLOCA if this machine does not support a true alloca
76 and the one written in C should be used instead.
77 Define HAVE_ALLOCA to say that the system provides a properly
78 working alloca function and it should be used.
79 Define neither one if an assembler-language alloca
80 in the file alloca.s should be used. */
81
82 /* #define C_ALLOCA */
83 #define HAVE_ALLOCA
84 #define alloca(x) __builtin_alloca(x)
85
86 /* Define NO_REMAP if memory segmentation makes it not work well
87 to change the boundary between the text section and data section
88 when Emacs is dumped. If you define this, the preloaded Lisp
89 code will not be sharable; but that's better than failing completely. */
90
91 #define NO_REMAP
92
93 /* Define ADDR_CORRECT(ADDR) to be a macro to correct an int which is
94 the bit pattern of a pointer to a byte into an int which is the
95 number of a byte.
96
97 This macro has a default definition which is usually right.
98 This default definition is a no-op on most machines (where a
99 pointer looks like an int) but not on all machines. */
100
101 #define ADDR_CORRECT(ADDR) ((int)ADDR)
102
103 /* Cast pointers to this type to compare them. */
104
105 #define PNTR_COMPARISON_TYPE void *
106
107 /* Some machines that use COFF executables require that each section
108 start on a certain boundary *in the COFF file*. Such machines should
109 define SECTION_ALIGNMENT to a mask of the low-order bits that must be
110 zero on such a boundary. This mask is used to control padding between
111 segments in the COFF file.
112
113 If SECTION_ALIGNMENT is not defined, the segments are written
114 consecutively with no attempt at alignment. This is right for
115 unmodified system V. */
116
117 #define SECTION_ALIGNMENT 0x7
118