src/m/ibmps2-aix.h

   1 /* machine description file for ibm ps/2 aix386.
   2    Copyright (C) 1989 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 GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 /* The following line tells the configuration script what sort of
  22    operating system this machine is likely to run.
  23    USUAL-OPSYS="note"
  24
  25 NOTE-START
  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.
  29 NOTE-END */
  30
  31 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  32    is the most significant byte.  */
  33
  34 #undef WORDS_BIG_ENDIAN
  35
  36 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  37  * group of arguments and treat it as an array of the arguments.  */
  38
  39 /* #define NO_ARG_ARRAY */
  40
  41 /* Define WORD_MACHINE if addresses and such have
  42  * to be corrected before they can be used as byte counts.  */
  43
  44 /* #define WORD_MACHINE */
  45
  46 /* Now define a symbol for the cpu type, if your compiler
  47    does not define it automatically:
  48    Ones defined so far include vax, m68000, ns16000, pyramid,
  49    orion, tahoe, APOLLO and many others */
  50
  51 #define INTEL386
  52 #define aix386
  53
  54 #define IBMAIX
  55
  56 /* Use type int rather than a union, to represent Lisp_Object */
  57
  58 #define NO_UNION_TYPE
  59
  60 /* crt0.c, if it is used, should use the i386-bsd style of entry.
  61    with no extra dummy args.  On USG and XENIX,
  62    NO_REMAP says this isn't used. */
  63
  64 #define CRT0_DUMMIES bogus_fp,
  65
  66 /* crt0.c should define a symbol `start' and do .globl with a dot.  */
  67
  68 #define DOT_GLOBAL_START
  69
  70 /* USG systems do not actually support the load average,
  71 so disable it for them.  */
  72
  73 /* Define CANNOT_DUMP on machines where unexec does not work.
  74    Then the function dump-emacs will not be defined
  75    and temacs will do (load "loadup") automatically unless told otherwise.  */
  76
  77 /* #define CANNOT_DUMP */
  78
  79 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  80    pure and impure space as loaded can vary, and even their
  81    relative order cannot be relied on.
  82
  83    Otherwise Emacs assumes that text space precedes data space,
  84    numerically.  */
  85
  86 /* #define VIRT_ADDR_VARIES */
  87
  88 /* Define addresses, macros, change some setup for dump */
  89
  90 #define NO_REMAP
  91 #undef static
  92   /* Since NO_REMAP, problem with statics doesn't exist */
  93
  94 #ifdef USG5_3
  95 #define TEXT_START 0x00000000
  96 #else
  97 #define TEXT_START 0x00400000
  98 #define TEXT_END 0
  99 #define DATA_START 0x00800000
 100 #define DATA_END 0
 101
 102 /* The data segment in this machine always starts at address 0x00800000.
 103    An address of data cannot be stored correctly in a Lisp object;
 104    we always lose the high bits.  We must tell XPNTR to add them back.  */
 105
 106 #define DATA_SEG_BITS 0x00800000
 107 #endif
 108
 109 #if 0 /* I refuse to promulgate a recommendation that would make
 110          users unable to debug - RMS.  */
 111 /* delete the following line to foil optimization, enable debugging */
 112 #define C_DEBUG_SWITCH -O
 113 #endif
 114
 115 #define BSTRING
 116 #define HAVE_VFORK
 117 #undef  HAVE_TERMIO
 118 #define HAVE_TERMIOS
 119
 120 /* Send signals to subprocesses by "typing" special chars at them.  */
 121
 122 #define SIGNALS_VIA_CHARACTERS
 123
 124 /*
 125  *      Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
 126  *      library functions.  Almost, but not quite the same as
 127  *      the 4.2 functions
 128  */
 129 #define SYSV_SYSTEM_DIR
 130
 131 /*
 132  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 133  *      The 4.2 opendir, etc., library functions.
 134  */
 135 #undef  NONSYSTEM_DIR_LIBRARY
 136
 137 /* AIX utimes allegedly causes SIGSEGV.  */
 138 #undef HAVE_UTIMES /* override configuration decision */
 139
 140 /* AIX defines FIONREAD, but it does not work.  */
 141 #define BROKEN_FIONREAD
 142
 143 /* Data type of load average, as read out of kmem.  */
 144
 145 #define LOAD_AVE_TYPE long      /* For AIX (sysV) */
 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) (((double) (x)/65535.0) * 100.0)
 150 \f
 151 /* This page was added in June 1990.  It may be incorrect for some versions
 152    of aix, so delete it if it causes trouble.  */
 153
 154 /* AIX has sigsetmask() */
 155 #undef sigsetmask
 156
 157 /* AIX386 has BSD4.3 PTYs */
 158
 159 #define HAVE_PTYS
 160
 161 /* AIX has IPC. It also has sockets, and either can be used for client/server.
 162    I would suggest the client/server code be changed to use HAVE_SOCKETS rather
 163    than BSD as the conditional if sockets provide any advantages. */
 164
 165 #define HAVE_SYSVIPC
 166
 167 /* AIX has sockets */
 168
 169 #define HAVE_SOCKETS
 170 /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
 171
 172 /* Specify the font for X to use.  */
 173
 174 #define X_DEFAULT_FONT "8x13"
 175
 176 /* AIX has a wait.h.  */
 177
 178 #define HAVE_WAIT_HEADER
 179 \f
 180 /* sioctl.h should not be included, says bytheway@cs.utah.edu.  */
 181 #undef NEED_SIOCTL
 182 /* I'm guessing that that means it doesn't want ptem.h either.  */
 183 #undef NEED_PTEM_H
 184
 185 /* aix has `union wait'  */
 186 #define HAVE_UNION_WAIT
 187
 188 /* Here override various assumptions in ymakefile */
 189
 190 /* Define C_ALLOCA if this machine does not support a true alloca
 191    and the one written in C should be used instead.
 192    Define HAVE_ALLOCA to say that the system provides a properly
 193    working alloca function and it should be used.
 194    Define neither one if an assembler-language alloca
 195    in the file alloca.s should be used.  */
 196
 197 #ifdef __GNUC__
 198 #define HAVE_ALLOCA
 199 #define alloca(n) __builtin_alloca(n)
 200 #if __GNUC__ < 2
 201 #define LIB_STANDARD /usr/local/lib/gcc-gnulib -lbsd -lrts -lc
 202 #endif
 203 /* -g fails to work, so it is omitted.  */
 204 /* tranle says that -fstrength-reduce does not help.  */
 205 #define C_DEBUG_SWITCH
 206 #else
 207 #define C_ALLOCA
 208 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 209 #define LIBS_MACHINE -lbsd -lrts
 210 #endif
 211
 212 #define OBJECTS_MACHINE hftctl.o
 213 #define LD_SWITCH_MACHINE -T0x00400000 -K -e start
 214 #define LIBS_DEBUG              /* no -lg on aix ps/2 */
 215
 216 #ifdef USG5_3
 217 #define XICCC
 218 #define HAVE_GETWD
 219 #undef LD_SWITCH_MACHINE
 220 #define LD_SWITCH_MACHINE -T0x0 -K -e start
 221
 222 /* Things defined in s-usg5-3.h that need to be overridden.  */
 223 #undef NOMULTIPLEJOBS
 224 #undef BROKEN_TIOCGETC
 225 #undef BROKEN_TIOCGWINSZ
 226 #undef LIBX10_SYSTEM
 227 #undef LIBX11_SYSTEM
 228 #undef LIB_X11_LIB
 229 #endif
 230
 231 /* Shared libraries are supported in a patch release of ps/2 1.2.1.
 232    If the system has them, the user can turn them on, and this code
 233    will make them work.  */
 234 #define USG_SHARED_LIBRARIES /* Assume that by 19's release everyone has this.  */
 235
 236 #ifdef USG_SHARED_LIBRARIES
 237 #define ORDINARY_LINK
 238 #undef LIB_STANDARD
 239 #undef LD_SWITCH_MACHINE
 240 #if __GNUC__ > 1
 241 #define LD_SWITCH_MACHINE -shlib
 242 #endif
 243 #endif