1/* machine description file for hp9000 series 800 machines.
2   Copyright (C) 1987, 2001, 2002, 2003, 2004, 2005,
3                 2006, 2007  Free Software Foundation, Inc.
4
5This file is part of GNU Emacs.
6
7GNU Emacs is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Emacs; see the file COPYING.  If not, write to
19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
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 WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
28   is the most significant byte.  */
29
30#define WORDS_BIG_ENDIAN
31
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.  */
34
35#define NO_ARG_ARRAY
36
37/* Define WORD_MACHINE if addresses and such have
38 * to be corrected before they can be used as byte counts.  */
39
40#undef WORD_MACHINE
41
42/* Now define a symbol for the cpu type, if your compiler
43   does not define it automatically:
44   Ones defined so far include vax, m68000, ns16000, pyramid,
45   orion, tahoe, APOLLO and many others */
46#ifndef hp9000s800
47#	define hp9000s800
48#endif
49
50/* Use type int rather than a union, to represent Lisp_Object */
51/* This is desirable for most machines.  */
52
53#define NO_UNION_TYPE
54
55/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
56   the bit field into an int.  In other words, if bit fields
57   are always unsigned.
58
59   If you use NO_UNION_TYPE, this flag does not matter.  */
60
61#define EXPLICIT_SIGN_EXTEND
62
63/* The standard definitions of these macros would work ok,
64   but these are faster because the constants are short. */
65
66
67#define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)
68
69#define XSET(var, type, ptr) \
70   ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
71
72/* Common definitions for HPUX and GNU/Linux.  */
73
74#if defined (__hpux) || defined (GNU_LINUX)
75/* Now define a symbol for the cpu type, if your compiler
76   does not define it automatically:
77   Ones defined so far include vax, m68000, ns16000, pyramid,
78   orion, tahoe, APOLLO and many others */
79#ifndef hp9000s800
80#     define hp9000s800
81#endif
82
83/* Define CANNOT_DUMP on machines where unexec does not work.
84   Then the function dump-emacs will not be defined
85   and temacs will do (load "loadup") automatically unless told otherwise.  */
86
87#undef CANNOT_DUMP
88
89/* Define NO_REMAP if memory segmentation makes it not work well
90   to change the boundary between the text section and data section
91   when Emacs is dumped.  If you define this, the preloaded Lisp
92   code will not be sharable; but that's better than failing completely.  */
93
94#define NO_REMAP
95
96#endif /* __hpux or GNU_LINUX */
97
98/* Stuff for just GNU/Linux.  */
99
100#ifdef GNU_LINUX
101
102/* Data type of load average, as read out of kmem.  */
103
104#define LOAD_AVE_TYPE long
105
106/* Convert that into an integer that is 100 for a load average of 1.0  */
107
108#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
109
110#endif /* GNU_LINUX */
111
112/* Stuff for just HPUX.  */
113
114#ifdef __hpux
115
116/* Define VIRT_ADDR_VARIES if the virtual addresses of
117   pure and impure space as loaded can vary, and even their
118   relative order cannot be relied on.
119
120   Otherwise Emacs assumes that text space precedes data space,
121   numerically.  */
122
123#define VIRT_ADDR_VARIES
124
125/* the data segment on this machine always starts at address 0x40000000. */
126
127#define DATA_SEG_BITS 0x40000000
128
129#define DATA_START    0x40000000
130#define TEXT_START    0x00000000
131
132/* This machine requires completely different unexec code
133   which lives in a separate file.  Specify the file name.  */
134
135#define UNEXEC unexhp9k800.o
136
137#define LIBS_MACHINE
138#define LIBS_DEBUG
139
140/* Include the file bsdtty.h, since this machine has job control.  */
141#define NEED_BSDTTY
142
143/* Data type of load average, as read out of kmem.  */
144
145#define LOAD_AVE_TYPE double
146
147/* Convert that into an integer that is 100 for a load average of 1.0  */
148
149#define LOAD_AVE_CVT(x) ((int) (x * 100.0))
150
151/* The symbol in the kernel where the load average is found
152   is named _avenrun.  At this time there are two major flavors
153   of hp-ux (there is the s800 and s300 (s200) flavors).  The
154   differences are thusly moved to the corresponding machine description file.
155*/
156
157/* no underscore please */
158#define LDAV_SYMBOL "avenrun"
159
160#if 0   /* Supposedly no longer true.  */
161/* In hpux, for unknown reasons, S_IFLNK is defined even though
162   symbolic links do not exist.
163   Make sure our conditionals based on S_IFLNK are not confused.
164
165   Here we assume that stat.h is included before config.h
166   so that we can override it here.  */
167
168#undef S_IFLNK
169#endif
170
171/* On USG systems these have different names. */
172
173#define index strchr
174#define rindex strrchr
175
176#endif /* __hpux */
177
178/* Systems with GCC don't need to lose. */
179#ifdef __NetBSD__
180# ifdef __GNUC__
181#  define alloca __builtin_alloca
182#  define HAVE_ALLOCA
183# endif /* __GNUC__ */
184#endif /* __NetBSD__ */
185
186/* arch-tag: 809436e6-1645-4b92-b40d-2de5d6e7227c
187   (do not change this comment) */
188