code.delx.au - gnu-emacs/blob - 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_GETTIMEOFDAY
 127 #define HAVE_SELECT
 128 #define HAVE_TIMEVAL
 129 #define HAVE_VFORK
 130
 131 /*
 132  *      Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
 133  *      library functions.  Almost, but not quite the same as
 134  *      the 4.2 functions
 135  */
 136 #define SYSV_SYSTEM_DIR
 137
 138 /*
 139  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 140  *      The 4.2 opendir, etc., library functions.
 141  */
 142 #undef  NONSYSTEM_DIR_LIBRARY
 143
 144 /* But don't use utimes() -- it causes SIGSEGV!  Use utime() instead. */
 145 #define USE_UTIME
 146
 147 /* AIX defines FIONREAD, but it does not work.  */
 148 #define BROKEN_FIONREAD
 149
 150 /* Data type of load average, as read out of kmem.  */
 151
 152 #define LOAD_AVE_TYPE long      /* For AIX (sysV) */
 153
 154 /* Convert that into an integer that is 100 for a load average of 1.0  */
 155
 156 #define LOAD_AVE_CVT(x) (int) (((double) (x)/65535.0) * 100.0)
 157 \f
 158 /* This page was added in June 1990.  It may be incorrect for some versions
 159    of aix, so delete it if it causes trouble.  */
 160
 161 /* AIX has sigsetmask() */
 162 #undef sigsetmask
 163
 164 /* AIX386 has BSD4.3 PTYs */
 165
 166 #define HAVE_PTYS
 167
 168 /* AIX has IPC. It also has sockets, and either can be used for client/server.
 169    I would suggest the client/server code be changed to use HAVE_SOCKETS rather
 170    than BSD as the conditional if sockets provide any advantages. */
 171
 172 #define HAVE_SYSVIPC
 173
 174 /* AIX has sockets */
 175
 176 #define HAVE_SOCKETS
 177 /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
 178
 179 /* Specify the font for X to use.  */
 180
 181 #define X_DEFAULT_FONT "8x13"
 182
 183 /* AIX has a wait.h.  */
 184
 185 #define HAVE_WAIT_HEADER
 186 \f
 187 /* sioctl.h should not be included, says bytheway@cs.utah.edu.  */
 188 #undef NEED_SIOCTL
 189 /* I'm guessing that that means it doesn't want ptem.h either.  */
 190 #undef NEED_PTEM_H
 191
 192 /* aix has `union wait'  */
 193 #define HAVE_UNION_WAIT
 194
 195 /* Here override various assumptions in ymakefile */
 196
 197 /* Define C_ALLOCA if this machine does not support a true alloca
 198    and the one written in C should be used instead.
 199    Define HAVE_ALLOCA to say that the system provides a properly
 200    working alloca function and it should be used.
 201    Define neither one if an assembler-language alloca
 202    in the file alloca.s should be used.  */
 203
 204 #ifdef __GNUC__
 205 #define HAVE_ALLOCA
 206 #define alloca(n) __builtin_alloca(n)
 207 #if __GNUC__ < 2
 208 #define LIB_STANDARD /usr/local/lib/gcc-gnulib -lbsd -lrts -lc
 209 #endif
 210 /* -g fails to work, so it is omitted.  */
 211 /* tranle says that -fstrength-reduce does not help.  */
 212 #define C_DEBUG_SWITCH -O -fwritable-strings
 213 #else
 214 #define C_ALLOCA
 215 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 216 #define LIBS_MACHINE -lbsd -lrts
 217 #endif
 218
 219 #define OBJECTS_MACHINE hftctl.o
 220 #define LD_SWITCH_MACHINE -T0x00400000 -K -e start
 221
 222 #ifdef USG5_3
 223 #define XICCC
 224 #define HAVE_GETWD
 225 #undef LD_SWITCH_MACHINE
 226 #define LD_SWITCH_MACHINE -T0x0 -K -e start
 227
 228 /* Things defined in s-usg5-3.h that need to be overridden.  */
 229 #undef NOMULTIPLEJOBS
 230 #undef BROKEN_TIOCGETC
 231 #undef LIBX10_SYSTEM
 232 #undef LIBX11_SYSTEM
 233 #endif
 234
 235 /* Shared libraries are supported in a patch release of ps/2 1.2.1.
 236    If the system has them, the user can turn them on, and this code
 237    will make them work.  */
 238 #define USG_SHARED_LIBRARIES /* Assume that by 19's release everyone has this.  */
 239
 240 #ifdef USG_SHARED_LIBRARIES
 241 #define ORDINARY_LINK
 242 #undef LIB_STANDARD
 243 #undef LD_SWITCH_MACHINE
 244 #if __GNUC__ > 1
 245 #define LD_SWITCH_MACHINE -shlib
 246 #endif
 247 #endif