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comparison src/m/gould.h @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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427:0a0253eac470 428:3ecd8885ac67
1 /* machine description file for Gould PowerNodes with UTX/32 2.0 and 2.1.
2 (See MACHINES for older versions.)
3
4 * NOTE: If you are running a pre-release of UTX/32 2.1 you should #define
5 * RELEASE2_1 in config.h. This may also be necessary with un-updated
6 * official releases of 2.1
7
8 Copyright (C) 1986 Free Software Foundation, Inc.
9
10 This file is part of GNU Emacs.
11
12 GNU Emacs is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
15 any later version.
16
17 GNU Emacs is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with XEmacs; see the file COPYING. If not, write to
24 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 Boston, MA 02111-1307, USA. */
26
27 /* Synched up with: FSF 19.31. */
28
29 /* The following line tells the configuration script what sort of
30 operating system this machine is likely to run.
31 USUAL-OPSYS="note"
32
33 NOTE-START
34 Gould Power Node (-machine=gould -opsystem=bsd4-2 or bsd4-3)
35 (gould.h; s-bsd4-2.h or s-bsd4-3.h)
36
37 18.36 worked on versions 1.2 and 2.0 of the operating system.
38
39 On UTX/32 2.0, use -opsystem=bsd4-3
40
41 On UTX/32 1.2 and UTX/32S 1.0, use -opsystem=bsd4-2 and note that compiling
42 lib-src/sorted-doc tickles a compiler bug: remove the -g flag to cc in the
43 makefile.
44
45 Version 19 incorporates support for releases 2.1 and later of UTX/32.
46 A site running a pre-release of 2.1 should #define RELEASE2_1 in config.h.
47 NOTE-END */
48
49 /* Define WORD_MACHINE if addresses and such have
50 * to be corrected before they can be used as byte counts. */
51
52 /* #define WORD_MACHINE */
53
54 /* Now define a symbol for the cpu type, if your compiler
55 does not define it automatically */
56
57 #ifndef GOULD
58 #define GOULD
59 #endif
60
61 /* sel is an old preprocessor name on gould machines
62 - it is no longer needed and interferes with a variable in xmenu.c */
63 #undef sel
64
65 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
66 the bit field into an int. In other words, if bit fields
67 are always unsigned.
68
69 If you use NO_UNION_TYPE, this flag does not matter. */
70
71 #define EXPLICIT_SIGN_EXTEND
72
73 /* Data type of load average, as read out of kmem. */
74
75 #define LOAD_AVE_TYPE double
76
77 /* Convert that into an integer that is 100 for a load average of 1.0 */
78
79 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)
80
81 /* Define CANNOT_DUMP on machines where unexec does not work.
82 Then the function dump-emacs will not be defined
83 and temacs will do (load "loadup") automatically unless told otherwise. */
84
85 /* #define CANNOT_DUMP */
86
87 /* Define VIRT_ADDR_VARIES if the virtual addresses of
88 pure and impure space as loaded can vary, and even their
89 relative order cannot be relied on.
90
91 Otherwise Emacs assumes that text space precedes data space,
92 numerically. */
93
94 #define VIRT_ADDR_VARIES
95
96 /* Define C_ALLOCA if this machine does not support a true alloca
97 and the one written in C should be used instead.
98 Define HAVE_ALLOCA to say that the system provides a properly
99 working alloca function and it should be used.
100 Define neither one if an assembler-language alloca
101 in the file alloca.s should be used. */
102
103 #define C_ALLOCA
104 #define STACK_DIRECTION -1 /* grows towards lower addresses on Gould UTX/32 */
105
106 /* No need to extend the user stack. */
107
108 /* If this is a 2.1 system, COFF will be predefined by cpp. If it's */
109 /* pre-2.1 COFF won't be defined, which is as it should be. */
110
111 #ifdef COFF
112
113 #define HEADER_INCL_IN_TEXT
114 #define COFF_BSD_SYMBOLS
115
116 /* Seems to be necessary with coff */
117 #define NO_REMAP
118
119 #ifndef GOULD_NP1
120 /* gould-np1.h includes this file */
121 /* keep the old value - don't skip over the headers */
122 #define KEEP_OLD_TEXT_SCNPTR
123 #define KEEP_OLD_PADDR
124 #ifndef RELEASE2_1
125 #define ADJUST_TEXTBASE
126 #endif /*RELEASE2_1*/
127 #endif /* GOULD_NP1 */
128
129 #ifdef IN_UNEXEC
130 /* make Gould NP and PN COFF look like USG COFF */
131 /* PN COFF */
132 #define aouthdr old_exec
133 /* PN COFF doesn't have a data_start or a_dtbase field in its */
134 /* optional header, so substitute a junk field */
135 #define a_dtbase a_ccvers
136 /* Gould COFF */
137 #define magic a_magic
138 #define tsize a_text
139 #define dsize a_data
140 #define bsize a_bss
141 #define entry a_entry
142 #define text_start a_txbase
143 #define data_start a_dtbase
144 #endif /* IN_UNEXEC */
145
146 /* Define how to search all pty names.
147 * This is for UTX 2.1 and greater on PN and all NP versions. It is only
148 * accident that this happens to correspond to the same versions of UTX
149 * as COFF does, but we'll take advantage of that here.
150 */
151
152 /*#define USE_PTY_PAIR*/
153
154 #endif /* COFF */
155
156 /* -g is sometimes broken on the Gould. */
157
158 #define C_DEBUG_SWITCH
159
160 /* The GOULD machine counts the a.out file header as part of the text. */
161
162 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
163
164 /* Machine-dependent action when about to dump an executable file. */
165
166 #ifndef COFF
167 #define ADJUST_EXEC_HEADER \
168 unexec_text_start = hdr.a_txbase + sizeof (hdr);
169 #endif
170
171 /* We use the system's crt0.o. Somehow it avoids losing
172 with `environ' the way most standard crt0.o's do. */
173
174 #define START_FILES "pre-crt0.o /lib/crt0.o"