1/* machine description file for ibm ps/2 aix386.
2   Copyright (C) 1989, 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="note"
26
27NOTE-START
28  Use -opsystem=usg5-3 on AIX 1.2.
29  -opsystem=usg5-2-2 should work on either AIX 1.1 or 1.2, but may not
30  work with certain new X window managers, and may be suboptimal.
31NOTE-END */
32
33/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
34   is the most significant byte.  */
35
36#undef WORDS_BIG_ENDIAN
37
38/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
39 * group of arguments and treat it as an array of the arguments.  */
40
41/* #define NO_ARG_ARRAY */
42
43/* Define WORD_MACHINE if addresses and such have
44 * to be corrected before they can be used as byte counts.  */
45
46/* #define WORD_MACHINE */
47
48/* Now define a symbol for the cpu type, if your compiler
49   does not define it automatically:
50   Ones defined so far include vax, m68000, ns16000, pyramid,
51   orion, tahoe, APOLLO and many others */
52
53#define INTEL386
54#define aix386
55
56#define IBMAIX
57
58/* Use type int rather than a union, to represent Lisp_Object */
59
60#define NO_UNION_TYPE
61
62/* crt0.c, if it is used, should use the i386-bsd style of entry.
63   with no extra dummy args.  On USG and XENIX,
64   NO_REMAP says this isn't used. */
65
66#define CRT0_DUMMIES bogus_fp,
67
68/* crt0.c should define a symbol `start' and do .globl with a dot.  */
69
70#define DOT_GLOBAL_START
71
72/* USG systems do not actually support the load average,
73so disable it for them.  */
74
75/* Define CANNOT_DUMP on machines where unexec does not work.
76   Then the function dump-emacs will not be defined
77   and temacs will do (load "loadup") automatically unless told otherwise.  */
78
79/* #define CANNOT_DUMP */
80
81/* Define VIRT_ADDR_VARIES if the virtual addresses of
82   pure and impure space as loaded can vary, and even their
83   relative order cannot be relied on.
84
85   Otherwise Emacs assumes that text space precedes data space,
86   numerically.  */
87
88/* #define VIRT_ADDR_VARIES */
89
90/* Define addresses, macros, change some setup for dump */
91
92#define NO_REMAP
93#undef static
94  /* Since NO_REMAP, problem with statics doesn't exist */
95
96#ifdef USG5_3
97#define TEXT_START 0x00000000
98#else
99#define TEXT_START 0x00400000
100#define TEXT_END 0
101#define DATA_START 0x00800000
102#define DATA_END 0
103
104/* The data segment in this machine always starts at address 0x00800000.
105   An address of data cannot be stored correctly in a Lisp object;
106   we always lose the high bits.  We must tell XPNTR to add them back.  */
107
108#define DATA_SEG_BITS 0x00800000
109#endif
110
111#if 0 /* I refuse to promulgate a recommendation that would make
112         users unable to debug - RMS.  */
113/* delete the following line to foil optimization, enable debugging */
114#define C_DEBUG_SWITCH -O
115#endif
116
117#define BSTRING
118#undef  HAVE_TERMIO
119#define HAVE_TERMIOS
120
121/* Send signals to subprocesses by "typing" special chars at them.  */
122
123#define SIGNALS_VIA_CHARACTERS
124
125/*
126 * 	Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
127 *	library functions.  Almost, but not quite the same as
128 *	the 4.2 functions
129 */
130#define SYSV_SYSTEM_DIR
131
132/*
133 *	Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
134 *      The 4.2 opendir, etc., library functions.
135 */
136#undef  NONSYSTEM_DIR_LIBRARY
137
138/* AIX utimes allegedly causes SIGSEGV.  */
139#undef HAVE_UTIMES /* override configuration decision */
140
141/* AIX defines FIONREAD, but it does not work.  */
142#define BROKEN_FIONREAD
143
144/* Data type of load average, as read out of kmem.  */
145
146#define LOAD_AVE_TYPE long	/* For AIX (sysV) */
147
148/* Convert that into an integer that is 100 for a load average of 1.0  */
149
150#define LOAD_AVE_CVT(x) (int) (((double) (x)/65535.0) * 100.0)
151
152/* This page was added in June 1990.  It may be incorrect for some versions
153   of aix, so delete it if it causes trouble.  */
154
155/* AIX has sigsetmask() */
156#undef sigsetmask
157
158/* AIX386 has BSD4.3 PTYs */
159
160#define HAVE_PTYS
161
162/* AIX has IPC. It also has sockets, and either can be used for client/server.
163   I would suggest the client/server code be changed to use HAVE_SOCKETS rather
164   than BSD as the conditional if sockets provide any advantages. */
165
166#define HAVE_SYSVIPC
167
168/* AIX has sockets */
169
170#define HAVE_SOCKETS
171/* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
172
173/* Specify the font for X to use.  */
174
175#define X_DEFAULT_FONT "8x13"
176
177/* AIX has a wait.h.  */
178
179#define HAVE_WAIT_HEADER
180
181/* sioctl.h should not be included, says bytheway@cs.utah.edu.  */
182#undef NEED_SIOCTL
183/* I'm guessing that that means it doesn't want ptem.h either.  */
184#undef NEED_PTEM_H
185
186/* aix has `union wait'  */
187#define HAVE_UNION_WAIT
188
189/* Here override various assumptions in ymakefile */
190
191#ifdef __GNUC__
192#define alloca(n) __builtin_alloca(n)
193#if __GNUC__ < 2
194#define LIB_STANDARD /usr/local/lib/gcc-gnulib -lbsd -lrts -lc
195#endif
196/* -g fails to work, so it is omitted.  */
197/* tranle says that -fstrength-reduce does not help.  */
198#define C_DEBUG_SWITCH
199#else
200#define LIBS_MACHINE -lbsd -lrts
201#endif
202
203#define OBJECTS_MACHINE hftctl.o
204#define LD_SWITCH_MACHINE -T0x00400000 -K -e start
205#define LIBS_DEBUG		/* no -lg on aix ps/2 */
206
207#ifdef USG5_3
208#define XICCC
209#undef LD_SWITCH_MACHINE
210#define LD_SWITCH_MACHINE -T0x0 -K -e start
211
212/* Things defined in s-usg5-3.h that need to be overridden.  */
213#undef NOMULTIPLEJOBS
214#undef BROKEN_TIOCGETC
215#undef BROKEN_TIOCGWINSZ
216#undef LIBX10_SYSTEM
217#undef LIBX11_SYSTEM
218#undef LIB_X11_LIB
219#endif
220
221/* Shared libraries are supported in a patch release of ps/2 1.2.1.
222   If the system has them, the user can turn them on, and this code
223   will make them work.  */
224#define USG_SHARED_LIBRARIES /* Assume that by 19's release everyone has this.  */
225
226#ifdef USG_SHARED_LIBRARIES
227#define ORDINARY_LINK
228#undef LIB_STANDARD
229#undef LD_SWITCH_MACHINE
230#if __GNUC__ > 1
231#define LD_SWITCH_MACHINE -shlib
232#endif
233#endif
234
235/* arch-tag: 2e7f44df-6a61-4a47-aa53-f7961bfeff11
236   (do not change this comment) */
237