src/m/ibmps2-aix.h

   1 /* machine description file for ibm ps/2 aix386.
   2    Copyright (C) 1989, 2002, 2003, 2004, 2005,
   3                  2006 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, 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
  27 NOTE-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.
  31 NOTE-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,
  73 so 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 \f
 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 \f
 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) */