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comparison src/m/masscomp.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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children a86b2b5e0111 abe6d1db359e
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1 /* machine description file for Masscomp 5000 series running RTU, ucb universe.
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 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 /* The following line tells the configuration script what sort of
24 operating system this machine is likely to run.
25 USUAL-OPSYS="rtu" */
26
27 /* Define WORD_MACHINE if addresses and such have
28 * to be corrected before they can be used as byte counts. */
29
30 #undef WORD_MACHINE
31
32 /* Now define a symbol for the cpu type, if your compiler
33 does not define it automatically:
34 vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
35 are the ones defined so far. */
36 /* Masscomp predefines mc68000. */
37 #define m68000 mc68000
38
39 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
40 the bit field into an int. In other words, if bit fields
41 are always unsigned.
42
43 If you use NO_UNION_TYPE, this flag does not matter. */
44
45 #undef EXPLICIT_SIGN_EXTEND
46
47 /* Data type of load average, as read out of kmem. */
48
49 #define LOAD_AVE_TYPE double
50
51 /* Convert that into an integer that is 100 for a load average of 1.0 */
52
53 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
54
55 /* Define CANNOT_DUMP on machines where unexec does not work.
56 Then the function dump-emacs will not be defined
57 and temacs will do (load "loadup") automatically unless told otherwise. */
58
59 #undef CANNOT_DUMP
60
61 /* Define VIRT_ADDR_VARIES if the virtual addresses of
62 pure and impure space as loaded can vary, and even their
63 relative order cannot be relied on.
64
65 Otherwise Emacs assumes that text space precedes data space,
66 numerically. */
67
68 #undef VIRT_ADDR_VARIES
69
70 /* Define C_ALLOCA if this machine does not support a true alloca
71 and the one written in C should be used instead.
72 Define HAVE_ALLOCA to say that the system provides a properly
73 working alloca function and it should be used.
74 Define neither one if an assembler-language alloca
75 in the file alloca.s should be used. */
76
77 /* On return from a subroutine, the 68020 compiler restores old contents of
78 register variables relative to sp, so alloca() screws up such routines.
79 The following definitions should work on all Masscomps. On the MC-5500
80 (a 68000) one can #undef C_ALLOCA and #define HAVE_ALLOCA. */
81 #ifdef mc500
82 #undef C_ALLOCA
83 #define HAVE_ALLOCA
84 #else
85 #define C_ALLOCA
86 #undef HAVE_ALLOCA
87 #endif
88
89 /* Define NO_REMAP if memory segmentation makes it not work well
90 to change the boundary between the text section and data section
91 when Emacs is dumped. If you define this, the preloaded Lisp
92 code will not be sharable; but that's better than failing completely. */
93
94 #undef NO_REMAP
95
96 /* crt0.c should use the vax-bsd style of entry, with a dummy arg. */
97
98 #define CRT0_DUMMIES bogus_fp,
99
100 /* Name of file the to look in
101 for the kernel symbol table (for load average) */
102
103 #define KERNEL_FILE "/unix"
104
105 /* This triggers some stuff to avoid a compiler bug */
106
107 #define MASSC_REGISTER_BUG
108
109 /* Prevent -lg from being used for debugging. Not implemented? */
110
111 #define LIBS_DEBUG
112
113 /* Adjust a header field for the executable file about to be dumped. */
114
115 #define ADJUST_EXEC_HEADER \
116 hdr.a_stamp = STAMP13; /* really want the latest stamp, whatever it is */