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comparison src/m/alliant-2800.h @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
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date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* alliant-2800.h - Alliant FX/2800 machine running Concentrix 2800.
2 Copyright (C) 1990 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="bsd4-3" */
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
37 #define ALLIANT
38 #define ALLIANT_2800
39 #define sun /* Use X support for Sun keyboard stuff. */
40 #define C_OPTIMIZE_SWITCH -Og /* No concurrent code allowed here. */
41
42 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
43 the bit field into an int. In other words, if bit fields
44 are always unsigned.
45
46 If you use NO_UNION_TYPE, this flag does not matter. */
47 /* On Alliants, bitfields are unsigned. */
48
49 #define EXPLICIT_SIGN_EXTEND
50
51 /* Concentrix uses a different kernel symbol for load average. */
52
53 #undef LDAV_SYMBOL /* Undo definition in s-bsd4-2.h */
54 #define LDAV_SYMBOL "_Loadavg"
55
56 /* Data type of load average, as read out of kmem. */
57
58 #define LOAD_AVE_TYPE long
59
60 /* Convert that into an integer that is 100 for a load average of 1.0 */
61
62 #define LOAD_AVE_CVT(x) (x * 100 / LOADAVG_SCALE)
63
64 /* include <sys/param.h> for the definition of LOADAVG_SCALE, and also
65 LOADAVG_SIZE, the number of items in the Loadavg array. */
66
67 /* Define CANNOT_DUMP on machines where unexec does not work.
68 Then the function dump-emacs will not be defined
69 and temacs will do (load "loadup") automatically unless told otherwise. */
70
71 /* #define CANNOT_DUMP */
72 #define UNEXEC unexfx2800.o
73 #define LIBS_MACHINE -lalliant
74
75 /* Define VIRT_ADDR_VARIES if the virtual addresses of
76 pure and impure space as loaded can vary, and even their
77 relative order cannot be relied on.
78
79 Otherwise Emacs assumes that text space precedes data space,
80 numerically. */
81
82 #undef VIRT_ADDR_VARIES
83
84 /* Define C_ALLOCA if this machine does not support a true alloca
85 and the one written in C should be used instead.
86 Define HAVE_ALLOCA to say that the system provides a properly
87 working alloca function and it should be used.
88 Define neither one if an assembler-language alloca
89 in the file alloca.s should be used. */
90
91 #undef C_ALLOCA
92 #define HAVE_ALLOCA
93
94 /* Define NO_REMAP if memory segmentation makes it not work well
95 to change the boundary between the text section and data section
96 when Emacs is dumped. If you define this, the preloaded Lisp
97 code will not be sharable; but that's better than failing completely. */
98 /* Actually, Alliant CONCENTRIX does paging "right":
99 data pages are copy-on-write, which means that the pure data areas
100 are shared automatically and remapping is not necessary. */
101
102 #define NO_REMAP
103
104 /* Alliant needs special crt0.o because system version is not reentrant */
105
106 #define START_FILES crt0.o
107
108 /* Alliant dependent code for dumping executing image.
109 See crt0.c code for alliant. */
110
111 #define ADJUST_EXEC_HEADER {\
112 extern int _curbrk, _setbrk;\
113 _setbrk = _curbrk;\
114 hdr.a_bss_addr = bss_start;\
115 unexec_text_start = hdr.a_text_addr;}
116
117 #if 0 /* RMSmacs */
118 /* Use the K&R version of the DEFUN macro. */
119 #define USE_NONANSI_DEFUN
120 #endif