1 /* machine description file for ibm ps/2 aix386.
2 Copyright (C) 1989 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.
26 Use -opsystem=usg5-3 on AIX 1.2.
27 -opsystem=usg5-2-2 should work on either AIX 1.1 or 1.2, but may not
28 work with certain new X window managers, and may be suboptimal.
31 /* The following three symbols give information on
32 the size of various data types. */
34 #define SHORTBITS 16 /* Number of bits in a short */
36 #define INTBITS 32 /* Number of bits in an int */
38 #define LONGBITS 32 /* Number of bits in a long */
40 /* i386 is not big-endian: lowest numbered byte is least significant. */
42 /* #undef BIG_ENDIAN */
44 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
45 * group of arguments and treat it as an array of the arguments. */
47 /* #define NO_ARG_ARRAY */
49 /* Define WORD_MACHINE if addresses and such have
50 * to be corrected before they can be used as byte counts. */
52 /* #define WORD_MACHINE */
54 /* Now define a symbol for the cpu type, if your compiler
55 does not define it automatically:
56 Ones defined so far include vax, m68000, ns16000, pyramid,
57 orion, tahoe, APOLLO and many others */
64 /* Use type int rather than a union, to represent Lisp_Object */
68 /* crt0.c, if it is used, should use the i386-bsd style of entry.
69 with no extra dummy args. On USG and XENIX,
70 NO_REMAP says this isn't used. */
72 #define CRT0_DUMMIES bogus_fp,
74 /* crt0.c should define a symbol `start' and do .globl with a dot. */
76 #define DOT_GLOBAL_START
78 /* USG systems do not actually support the load average,
79 so disable it for them. */
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. */
85 /* #define CANNOT_DUMP */
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.
91 Otherwise Emacs assumes that text space precedes data space,
94 /* #define VIRT_ADDR_VARIES */
96 /* Define addresses, macros, change some setup for dump */
100 /* Since NO_REMAP, problem with statics doesn't exist */
103 #define TEXT_START 0x00000000
105 #define TEXT_START 0x00400000
107 #define DATA_START 0x00800000
110 /* The data segment in this machine always starts at address 0x00800000.
111 An address of data cannot be stored correctly in a Lisp object;
112 we always lose the high bits. We must tell XPNTR to add them back. */
114 #define DATA_SEG_BITS 0x00800000
117 #if 0 /* I refuse to promulgate a recommendation that would make
118 users unable to debug - RMS. */
119 /* delete the following line to foil optimization, enable debugging */
120 #define C_DEBUG_SWITCH -O
130 /* Send signals to subprocesses by "typing" special chars at them. */
132 #define SIGNALS_VIA_CHARACTERS
135 * Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
136 * library functions. Almost, but not quite the same as
139 #define SYSV_SYSTEM_DIR
142 * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
143 * The 4.2 opendir, etc., library functions.
145 #undef NONSYSTEM_DIR_LIBRARY
147 /* But don't use utimes() -- it causes SIGSEGV! Use utime() instead. */
150 /* AIX defines FIONREAD, but it does not work. */
151 #define BROKEN_FIONREAD
153 /* Data type of load average, as read out of kmem. */
155 #define LOAD_AVE_TYPE long /* For AIX (sysV) */
157 /* Convert that into an integer that is 100 for a load average of 1.0 */
159 #define LOAD_AVE_CVT(x) (int) (((double) (x)/65535.0) * 100.0)
161 /* This page was added in June 1990. It may be incorrect for some versions
162 of aix, so delete it if it causes trouble. */
164 /* AIX has sigsetmask() */
167 /* AIX386 has BSD4.3 PTYs */
171 /* AIX has IPC. It also has sockets, and either can be used for client/server.
172 I would suggest the client/server code be changed to use HAVE_SOCKETS rather
173 than BSD as the conditional if sockets provide any advantages. */
177 /* AIX has sockets */
180 /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
182 /* Specify the font for X to use. */
184 #define X_DEFAULT_FONT "8x13"
186 /* AIX has a wait.h. */
188 #define HAVE_WAIT_HEADER
190 /* sioctl.h should not be included, says bytheway@cs.utah.edu. */
192 /* I'm guessing that that means it doesn't want ptem.h either. */
195 /* aix has `union wait' */
196 #define HAVE_UNION_WAIT
198 /* Here override various assumptions in ymakefile */
200 /* Define C_ALLOCA if this machine does not support a true alloca
201 and the one written in C should be used instead.
202 Define HAVE_ALLOCA to say that the system provides a properly
203 working alloca function and it should be used.
204 Define neither one if an assembler-language alloca
205 in the file alloca.s should be used. */
209 #define alloca(n) __builtin_alloca(n)
211 #define LIB_STANDARD /usr/local/lib/gcc-gnulib -lbsd -lrts -lc
213 /* -g fails to work, so it is omitted. */
214 /* tranle says that -fstrength-reduce does not help. */
215 #define C_DEBUG_SWITCH
218 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
219 #define LIBS_MACHINE -lbsd -lrts
222 #define OBJECTS_MACHINE hftctl.o
223 #define LD_SWITCH_MACHINE -T0x00400000 -K -e start
224 #define LIBS_DEBUG /* no -lg on aix ps/2 */
229 #undef LD_SWITCH_MACHINE
230 #define LD_SWITCH_MACHINE -T0x0 -K -e start
232 /* Things defined in s-usg5-3.h that need to be overridden. */
233 #undef NOMULTIPLEJOBS
234 #undef BROKEN_TIOCGETC
235 #undef BROKEN_TIOCGWINSZ
241 /* Shared libraries are supported in a patch release of ps/2 1.2.1.
242 If the system has them, the user can turn them on, and this code
243 will make them work. */
244 #define USG_SHARED_LIBRARIES /* Assume that by 19's release everyone has this. */
246 #ifdef USG_SHARED_LIBRARIES
247 #define ORDINARY_LINK
249 #undef LD_SWITCH_MACHINE
251 #define LD_SWITCH_MACHINE -shlib