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comparison src/m/hp800.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 hp9000 series 800 machines.
2 Copyright (C) 1987 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="hpux" */
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 Ones defined so far include vax, m68000, ns16000, pyramid,
35 orion, tahoe, APOLLO and many others */
36 #ifndef hp9000s800
37 # define hp9000s800
38 #endif
39
40 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
41 the bit field into an int. In other words, if bit fields
42 are always unsigned.
43
44 If you use NO_UNION_TYPE, this flag does not matter. */
45
46 #define EXPLICIT_SIGN_EXTEND
47
48 #ifdef __hpux
49 /* Now define a symbol for the cpu type, if your compiler
50 does not define it automatically:
51 Ones defined so far include vax, m68000, ns16000, pyramid,
52 orion, tahoe, APOLLO and many others */
53 #ifndef hp9000s800
54 # define hp9000s800
55 #endif
56
57 /* Data type of load average, as read out of kmem. */
58
59 #define LOAD_AVE_TYPE double
60
61 /* Convert that into an integer that is 100 for a load average of 1.0 */
62
63 #define LOAD_AVE_CVT(x) ((int) (x * 100.0))
64
65
66 /* Define CANNOT_DUMP on machines where unexec does not work.
67 Then the function dump-emacs will not be defined
68 and temacs will do (load "loadup") automatically unless told otherwise. */
69
70 #undef CANNOT_DUMP
71
72 /* Define VIRT_ADDR_VARIES if the virtual addresses of
73 pure and impure space as loaded can vary, and even their
74 relative order cannot be relied on.
75
76 Otherwise Emacs assumes that text space precedes data space,
77 numerically. */
78
79 #define VIRT_ADDR_VARIES
80
81 /* Define C_ALLOCA if this machine does not support a true alloca
82 and the one written in C should be used instead.
83 Define HAVE_ALLOCA to say that the system provides a properly
84 working alloca function and it should be used.
85 Define neither one if an assembler-language alloca
86 in the file alloca.s should be used. */
87
88 /* lemacs change: define HAVE_ALLOCA if gcc is being used */
89 #ifdef __GNUC__
90 #define HAVE_ALLOCA
91 #else
92 #define C_ALLOCA
93 #endif
94
95 /* the data segment on this machine always starts at address 0x40000000. */
96
97 #define DATA_SEG_BITS 0x40000000
98
99 #ifdef DATA_START
100 #undef DATA_START
101 #endif
102 #ifdef TEXT_START
103 #undef TEXT_START
104 #endif
105
106 #define DATA_START 0x40000000
107 #define TEXT_START 0x00000000
108
109 #define STACK_DIRECTION 1
110
111 /* Define NO_REMAP if memory segmentation makes it not work well
112 to change the boundary between the text section and data section
113 when Emacs is dumped. If you define this, the preloaded Lisp
114 code will not be sharable; but that's better than failing completely. */
115
116 #define NO_REMAP
117
118 /* This machine requires completely different unexec code
119 which lives in a separate file. Specify the file name. */
120
121 #define UNEXEC unexhp9k800.o
122
123 #define LIBS_MACHINE
124 #define LIBS_DEBUG
125
126 /* Include the file bsdtty.h, since this machine has job control. */
127 #define NEED_BSDTTY
128
129 /* The symbol in the kernel where the load average is found
130 is named _avenrun. At this time there are two major flavors
131 of hp-ux (there is the s800 and s300 (s200) flavors). The
132 differences are thusly moved to the corresponding machine description file.
133 */
134
135 /* no underscore please */
136 #define LDAV_SYMBOL "avenrun"
137
138 #if 0 /* Supposedly no longer true. */
139 /* In hpux, for unknown reasons, S_IFLNK is defined even though
140 symbolic links do not exist.
141 Make sure our conditionals based on S_IFLNK are not confused.
142
143 Here we assume that stat.h is included before config.h
144 so that we can override it here. */
145
146 #undef S_IFLNK
147 #endif
148
149 #endif /* __hpux */