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 1, 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 /* The following three symbols give information on
  32  the size of various data types.  */
  33
  34 #define SHORTBITS 16            /* Number of bits in a short */
  35
  36 #define INTBITS 32              /* Number of bits in an int */
  37
  38 #define LONGBITS 32             /* Number of bits in a long */
  39
  40 /* i386 is not big-endian: lowest numbered byte is least significant. */
  41
  42 /* #undef BIG_ENDIAN */
  43
  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.  */
  46
  47 /* #define NO_ARG_ARRAY */
  48
  49 /* Define WORD_MACHINE if addresses and such have
  50  * to be corrected before they can be used as byte counts.  */
  51
  52 /* #define WORD_MACHINE */
  53
  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 */
  58
  59 #define INTEL386
  60 #define aix386
  61 #undef  SYSTEM_TYPE
  62 #define SYSTEM_TYPE "ibm-aix-386"
  63
  64 #define IBMAIX
  65
  66 /* Use type int rather than a union, to represent Lisp_Object */
  67
  68 #define NO_UNION_TYPE
  69
  70 /* crt0.c, if it is used, should use the i386-bsd style of entry.
  71    with no extra dummy args.  On USG and XENIX,
  72    NO_REMAP says this isn't used. */
  73
  74 #define CRT0_DUMMIES bogus_fp,
  75
  76 /* crt0.c should define a symbol `start' and do .globl with a dot.  */
  77
  78 #define DOT_GLOBAL_START
  79
  80 /* USG systems do not actually support the load average,
  81 so disable it for them.  */
  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 /* #define CANNOT_DUMP */
  88
  89 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  90    pure and impure space as loaded can vary, and even their
  91    relative order cannot be relied on.
  92
  93    Otherwise Emacs assumes that text space precedes data space,
  94    numerically.  */
  95
  96 /* #define VIRT_ADDR_VARIES */
  97
  98 /* Define addresses, macros, change some setup for dump */
  99
 100 #define NO_REMAP
 101 #undef static
 102   /* Since NO_REMAP, problem with statics doesn't exist */
 103
 104 #ifdef USG5_3
 105 #define TEXT_START 0x00000000
 106 #else
 107 #define TEXT_START 0x00400000
 108 #define TEXT_END 0
 109 #define DATA_START 0x00800000
 110 #define DATA_END 0
 111
 112 /* The data segment in this machine always starts at address 0x00800000.
 113    An address of data cannot be stored correctly in a Lisp object;
 114    we always lose the high bits.  We must tell XPNTR to add them back.  */
 115
 116 #define DATA_SEG_BITS 0x00800000
 117 #endif
 118
 119 #if 0 /* I refuse to promulgate a recommendation that would make
 120          users unable to debug - RMS.  */
 121 /* delete the following line to foil optimization, enable debugging */
 122 #define C_DEBUG_SWITCH -O
 123 #endif
 124
 125 #define BSTRING
 126 #define HAVE_DUP2
 127 #define HAVE_GETTIMEOFDAY
 128 #define HAVE_SELECT
 129 #define HAVE_TIMEVAL
 130 #define HAVE_VFORK
 131
 132 /*
 133  *      Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
 134  *      library functions.  Almost, but not quite the same as
 135  *      the 4.2 functions
 136  */
 137 #define SYSV_SYSTEM_DIR
 138
 139 /*
 140  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 141  *      The 4.2 opendir, etc., library functions.
 142  */
 143 #undef  NONSYSTEM_DIR_LIBRARY
 144
 145 /* But don't use utimes() -- it causes SIGSEGV!  Use utime() instead. */
 146 #define USE_UTIME
 147
 148 /* AIX defines FIONREAD, but it does not work.  */
 149 #define BROKEN_FIONREAD
 150
 151 /* Data type of load average, as read out of kmem.  */
 152
 153 #define LOAD_AVE_TYPE long      /* For AIX (sysV) */
 154
 155 /* Convert that into an integer that is 100 for a load average of 1.0  */
 156
 157 #define LOAD_AVE_CVT(x) (int) (((double) (x)/65535.0) * 100.0)
 158 \f
 159 /* This page was added in June 1990.  It may be incorrect for some versions
 160    of aix, so delete it if it causes trouble.  */
 161
 162 /* AIX has sigsetmask() */
 163 #undef sigsetmask
 164
 165 /* AIX386 has BSD4.3 PTYs */
 166
 167 #define HAVE_PTYS
 168
 169 /* AIX has IPC. It also has sockets, and either can be used for client/server.
 170    I would suggest the client/server code be changed to use HAVE_SOCKETS rather
 171    than BSD as the conditional if sockets provide any advantages. */
 172
 173 #define HAVE_SYSVIPC
 174
 175 /* AIX has sockets */
 176
 177 #define HAVE_SOCKETS
 178 /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
 179
 180 /* Specify the font for X to use.  */
 181
 182 #define X_DEFAULT_FONT "8x13"
 183
 184 /* AIX has a wait.h.  */
 185
 186 #define HAVE_WAIT_HEADER
 187 \f
 188 /* sioctl.h should not be included, says bytheway@cs.utah.edu.  */
 189 #undef NEED_SIOCTL
 190 /* I'm guessing that that means it doesn't want ptem.h either.  */
 191 #undef NEED_PTEM_H
 192
 193 /* aix has `union wait'  */
 194 #define HAVE_UNION_WAIT
 195
 196 /* Here override various assumptions in ymakefile */
 197
 198 /* Define C_ALLOCA if this machine does not support a true alloca
 199    and the one written in C should be used instead.
 200    Define HAVE_ALLOCA to say that the system provides a properly
 201    working alloca function and it should be used.
 202    Define neither one if an assembler-language alloca
 203    in the file alloca.s should be used.  */
 204
 205 #ifdef __GNUC__
 206 #define HAVE_ALLOCA
 207 #define alloca(n) __builtin_alloca(n)
 208 #if __GNUC__ < 2
 209 #define LIB_STANDARD /usr/local/lib/gcc-gnulib -lbsd -lrts -lc
 210 #endif
 211 /* -g fails to work, so it is omitted.  */
 212 /* tranle says that -fstrength-reduce does not help.  */
 213 #define C_DEBUG_SWITCH -O -fwritable-strings
 214 #else
 215 #define C_ALLOCA
 216 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 217 #define LIBS_MACHINE -lbsd -lrts
 218 #endif
 219
 220 #define OBJECTS_MACHINE hftctl.o
 221 #define LD_SWITCH_MACHINE -T0x00400000 -K -e start
 222
 223 #ifdef USG5_3
 224 #define XICCC
 225 #define HAVE_GETWD
 226 #define HAVE_RENAME
 227 #undef LD_SWITCH_MACHINE
 228 #define LD_SWITCH_MACHINE -T0x0 -K -e start
 229
 230 /* Things defined in s-usg5-3.h that need to be overridden.  */
 231 #undef NOMULTIPLEJOBS
 232 #undef BROKEN_TIOCGETC
 233 #undef LIBX10_SYSTEM
 234 #undef LIBX11_SYSTEM
 235 #endif
 236
 237 /* Shared libraries are supported in a patch release of ps/2 1.2.1.
 238    If the system has them, the user can turn them on, and this code
 239    will make them work.  */
 240 #define USG_SHARED_LIBRARIES /* Assume that by 19's release everyone has this.  */
 241
 242 #ifdef USG_SHARED_LIBRARIES
 243 #define ORDINARY_LINK
 244 #undef LIB_STANDARD
 245 #undef LD_SWITCH_MACHINE
 246 #if __GNUC__ > 1
 247 #define LD_SWITCH_MACHINE -shlib
 248 #endif
 249 #endif