1 /* machine description file for hp9000 series 800 machines.
2 Copyright (C) 1987 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
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)
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.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* The following line tells the configuration script what sort of
22 operating system this machine is likely to run.
25 /* The following three symbols give information on
26 the size of various data types. */
28 #define SHORTBITS 16 /* Number of bits in a short */
30 #define INTBITS 32 /* Number of bits in an int */
32 #define LONGBITS 32 /* Number of bits in a long */
34 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
35 is the most significant byte. */
39 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
40 * group of arguments and treat it as an array of the arguments. */
44 /* Define WORD_MACHINE if addresses and such have
45 * to be corrected before they can be used as byte counts. */
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 */
57 /* Use type int rather than a union, to represent Lisp_Object */
58 /* This is desirable for most machines. */
62 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
63 the 24-bit bit field into an int. In other words, if bit fields
66 If you use NO_UNION_TYPE, this flag does not matter. */
68 #define EXPLICIT_SIGN_EXTEND
70 /* Data type of load average, as read out of kmem. */
72 #define LOAD_AVE_TYPE double
74 /* Convert that into an integer that is 100 for a load average of 1.0 */
76 #define LOAD_AVE_CVT(x) ((int) (x * 100.0))
79 /* Define CANNOT_DUMP on machines where unexec does not work.
80 Then the function dump-emacs will not be defined
81 and temacs will do (load "loadup") automatically unless told otherwise. */
85 /* Define VIRT_ADDR_VARIES if the virtual addresses of
86 pure and impure space as loaded can vary, and even their
87 relative order cannot be relied on.
89 Otherwise Emacs assumes that text space precedes data space,
92 #define VIRT_ADDR_VARIES
94 /* Define C_ALLOCA if this machine does not support a true alloca
95 and the one written in C should be used instead.
96 Define HAVE_ALLOCA to say that the system provides a properly
97 working alloca function and it should be used.
98 Define neither one if an assembler-language alloca
99 in the file alloca.s should be used. */
102 /* #define HAVE_ALLOCA */
104 /* the data segment on this machine always starts at address 0x40000000. */
106 #define DATA_SEG_BITS 0x40000000
111 #define DATA_START 0x40000000
112 #define TEXT_START 0x00000000
114 #define STACK_DIRECTION 1
116 /* Define NO_REMAP if memory segmentation makes it not work well
117 to change the boundary between the text section and data section
118 when Emacs is dumped. If you define this, the preloaded Lisp
119 code will not be sharable; but that's better than failing completely. */
123 /* This machine requires completely different unexec code
124 which lives in a separate file. Specify the file name. */
126 #define UNEXEC unexhp9k800.o
131 /* Define NEED_BSDTTY if you have such. */
135 /* The standard definitions of these macros would work ok,
136 but these are faster because the constants are short. */
139 #define XUINT(a) (((unsigned)(a) << INTBITS-VALBITS) >> INTBITS-VALBITS)
141 #define XSET(var, type, ptr) \
142 ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << INTBITS-VALBITS) >> INTBITS-VALBITS))
144 #define XSETINT(a, b) XSET(a, XTYPE(a), b)
145 #define XSETUINT(a, b) XSET(a, XTYPE(a), b)
146 #define XSETPNTR(a, b) XSET(a, XTYPE(a), b)
147 #define XMARKBIT(a) ((a) < 0)
148 #define XSETMARKBIT(a,b) ((a) = ((b) ? (a)|MARKBIT : (a) & ~MARKBIT))
150 #if 0 /* Loses when sign bit of type field is set. */
151 #define XUNMARK(a) ((a) = (((a) << INTBITS-GCTYPEBITS-VALBITS) >> INTBITS-GCTYPEBITS-VALBITS))
154 /* The symbol in the kernel where the load average is found
155 is named _avenrun. At this time there are two major flavors
156 of hp-ux (there is the s800 and s300 (s200) flavors). The
157 differences are thusly moved to the corresponding machine description file.
160 /* no underscore please */
161 #define LDAV_SYMBOL "avenrun"
162 #define CPTIME_SYMBOL "cp_time"
163 #define DKXFER_SYMBOL "dk_xfer"
165 #if 0 /* Supposedly no longer true. */
166 /* In hpux, for unknown reasons, S_IFLNK is defined even though
167 symbolic links do not exist.
168 Make sure our conditionals based on S_IFLNK are not confused.
170 Here we assume that stat.h is included before config.h
171 so that we can override it here. */
176 /* Define the BSTRING functions in terms of the sysV functions. */
177 /* On HPUX 8.05, including types.h can include strings.h
178 which declares these as functions. Hence the #ifndef. */
181 #define bcopy(a,b,s) memcpy (b,a,s)
182 #define bzero(a,s) memset (a,0,s)
186 /* On USG systems these have different names. */
189 #define rindex strrchr
191 /* Include the file bsdtty.h, since this machine has job control. */