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comparison src/m/convex.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 Convex (all models).
2 Copyright (C) 1987, 1994 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 /* #define WORD_MACHINE */
31
32 /* Now define a symbol for the cpu type, if your compiler
33 does not define it automatically. */
34 #ifndef convex /* The compiler doesn't always do this. */
35 #define convex
36 #endif
37
38 #ifndef __GNUC__ /* David M. Cooke <dcooke@haven.larc.nasa.gov>
39 and Ralph Sobek <Ralph.Sobek@cerfacs.fr> agree
40 must ignore one arg when compiled with convex compiler. */
41 #define CRT0_DUMMIES ignore,
42 #else
43 #define CRT0_DUMMIES
44 #endif
45
46 /* crt0.c should define a symbol `start' and do .globl with a dot. */
47
48 #define DOT_GLOBAL_START
49
50 /* Data type of load average, as read out of kmem. */
51
52 #define LOAD_AVE_TYPE double
53
54 /* Convert that into an integer that is 100 for a load average of 1.0 */
55
56 #define LOAD_AVE_CVT(x) (int) ((x) * 100.0)
57
58 /* Define CANNOT_DUMP on machines where unexec does not work.
59 Then the function dump-emacs will not be defined
60 and temacs will do (load "loadup") automatically unless told otherwise. */
61
62 /* #define CANNOT_DUMP */
63
64 /* Define VIRT_ADDR_VARIES if the virtual addresses of
65 pure and impure space as loaded can vary, and even their
66 relative order cannot be relied on.
67
68 Otherwise Emacs assumes that text space precedes data space,
69 numerically. */
70
71 /*#define VIRT_ADDR_VARIES*/
72
73 /* Define C_ALLOCA if this machine does not support a true alloca
74 and the one written in C should be used instead.
75 Define HAVE_ALLOCA to say that the system provides a properly
76 working alloca function and it should be used.
77 Define neither one if an assembler-language alloca
78 in the file alloca.s should be used. */
79
80 /* #define C_ALLOCA */
81 #define HAVE_ALLOCA
82
83 /* Must use the system's termcap. It does special things. */
84
85 #define LIBS_TERMCAP -ltermcap
86
87 /* Define NO_REMAP if memory segmentation makes it not work well
88 to change the boundary between the text section and data section
89 when Emacs is dumped. If you define this, the preloaded Lisp
90 code will not be sharable; but that's better than failing completely. */
91
92 /* #define NO_REMAP */
93
94 /* Addresses on the Convex have the high bit set. */
95 #define DATA_SEG_BITS (1 << (INTBITS-1))
96
97 /* Right shift is logical shift.
98 And the usual way of handling such machines, which involves
99 copying the number into sign_extend_temp, does not work
100 for reasons as yet unknown. */
101
102 #define XREALINT(a) sign_extend_lisp_int (a)
103
104 /* Convex uses a special version of unexec. */
105
106 #define UNEXEC unexconvex.o
107
108 /* you gotta define 'COFF' for post 6.1 unexec. */
109
110 #define COFF
111 #define TEXT_START 0x80001000
112
113 /* Posix stuff for Convex OS 8.1 and up. */
114
115 #define LD_SWITCH_MACHINE \
116 -e__start -L /usr/lib \
117 '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'
118
119 #ifdef _POSIX_SOURCE
120
121 /* These symbols have been undefined to advance the state of the art. */
122
123 #define S_IFMT _S_IFMT
124 #define S_IFDIR _S_IFDIR
125
126 #define S_IREAD _S_IREAD
127 #define S_IWRITE _S_IWRITE
128 #define S_IEXEC _S_IEXEC
129
130 #endif
131
132 /* Ptys may start below ptyp0; call a routine to hunt for where. */
133
134 #undef FIRST_PTY_LETTER
135 #define FIRST_PTY_LETTER first_pty_letter()
136
137 #if 0
138 /*
139 * Force a K&R compilation and libraries with the Convex V 4.0 C compiler
140 */
141 #define C_SWITCH_MACHINE -pcc
142 #define LIB_STANDARD -lc_old
143 #define LIBS_MACHINE -lC2_old
144 #define LD_SWITCH_MACHINE -X -NL -fn -Enoposix -A__iob=___ap\$$iob \
145 -A_use_libc_sema=___ap\$$use_libc_sema -L /usr/lib
146 #endif
147
148 /* Avoid error in xrdb.c - d.m.cooke@larc.nasa.gov. */
149 #define DECLARE_GETPWUID_WITH_UID_T
150
151 /* Call getpgrp properly. */
152 #define GETPGRP_NO_ARG
153
154 /* Tested for both Convex C and GNUC by d.m.cooke@larc.nasa.gov. */
155 #define LIBS_MACHINE -lC2
156
157 /* Avoid error in getloadavg.c. */
158 #define NLIST_NAME_UNION 1
159
160 #if 0 /* This is supposed to be an improvement.
161 It would be good for people to try enabling this code
162 and report the results. */
163 /* gcc -nostdlib prevents some math symbols from being included.
164 So we have to use -nostartfiles instead. */
165 #define LINKER $(CC) -nostartfiles
166
167 #define ORDINARY_LINK
168
169 #undef LD_SWITCH_MACHINE
170 #define LD_SWITCH_MACHINE \
171 -L /usr/lib \
172 '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'
173 #endif