1 /* alliant-2800.h - Alliant FX/2800 machine running Concentrix 2800.
2 Copyright (C) 1990, 2002, 2003, 2004, 2005,
3 2006 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
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" */
27 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
28 is the most significant byte. */
30 #undef WORDS_BIG_ENDIAN
32 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
33 * group of arguments and treat it as an array of the arguments. */
37 /* Define WORD_MACHINE if addresses and such have
38 * to be corrected before they can be used as byte counts. */
42 /* Now define a symbol for the cpu type, if your compiler
43 does not define it automatically:
44 vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
45 are the ones defined so far. */
49 #define sun /* Use X support for Sun keyboard stuff. */
50 #define C_OPTIMIZE_SWITCH -Og /* No concurrent code allowed here. */
52 /* Use type int rather than a union, to represent Lisp_Object */
53 /* This is desirable for most machines. */
57 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
58 the bit field into an int. In other words, if bit fields
61 If you use NO_UNION_TYPE, this flag does not matter. */
62 /* On Alliants, bitfields are unsigned. */
64 #define EXPLICIT_SIGN_EXTEND
66 /* Concentrix uses a different kernel symbol for load average. */
68 #undef LDAV_SYMBOL /* Undo definition in s-bsd4-2.h */
69 #define LDAV_SYMBOL "_Loadavg"
71 /* Data type of load average, as read out of kmem. */
73 #define LOAD_AVE_TYPE long
75 /* Convert that into an integer that is 100 for a load average of 1.0 */
77 #define LOAD_AVE_CVT(x) (x * 100 / LOADAVG_SCALE)
79 /* include <sys/param.h> for the definition of LOADAVG_SCALE, and also
80 LOADAVG_SIZE, the number of items in the Loadavg array. */
82 /* Define CANNOT_DUMP on machines where unexec does not work.
83 Then the function dump-emacs will not be defined
84 and temacs will do (load "loadup") automatically unless told otherwise. */
86 /* #define CANNOT_DUMP */
87 #define UNEXEC unexfx2800.o
88 #define LIBS_MACHINE -lalliant
90 /* Define VIRT_ADDR_VARIES if the virtual addresses of
91 pure and impure space as loaded can vary, and even their
92 relative order cannot be relied on.
94 Otherwise Emacs assumes that text space precedes data space,
97 #undef VIRT_ADDR_VARIES
99 /* Define NO_REMAP if memory segmentation makes it not work well
100 to change the boundary between the text section and data section
101 when Emacs is dumped. If you define this, the preloaded Lisp
102 code will not be sharable; but that's better than failing completely. */
103 /* Actually, Alliant CONCENTRIX does paging "right":
104 data pages are copy-on-write, which means that the pure data areas
105 are shared automatically and remapping is not necessary. */
109 /* Alliant needs special crt0.o because system version is not reentrant */
111 #define START_FILES crt0.o
113 /* Alliant dependent code for dumping executing image.
114 See crt0.c code for alliant. */
116 #define ADJUST_EXEC_HEADER {\
117 extern int _curbrk, _setbrk;\
119 hdr.a_bss_addr = bss_start;\
120 unexec_text_start = hdr.a_text_addr;}
122 /* POSIX Compatibility */
123 /* Use System V.4 style getdents/readdir <dirent.h> for 2.2 and up. */
124 #define SYSV_SYSTEM_DIR
126 /* Use the K&R version of the DEFUN macro. */
127 #define USE_NONANSI_DEFUN
129 /* arch-tag: 8ba70b15-d082-40f6-931d-14adfd7f9dbd
130 (do not change this comment) */