src/m/ibmrs6000.h

   1 /* R2 AIX machine/system dependent defines
   2    Copyright (C) 1988 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, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 /* The following line tells the configuration script what sort of
  23    operating system this machine is likely to run.
  24    USUAL-OPSYS="aix3-1"  */
  25
  26 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  27    is the most significant byte.  */
  28
  29 #ifdef USG5_4
  30 #undef WORDS_BIG_ENDIAN
  31 #else
  32 #define WORDS_BIG_ENDIAN
  33 #endif
  34
  35 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  36  * group of arguments and treat it as an array of the arguments.  */
  37
  38 #define NO_ARG_ARRAY
  39
  40 /* Now define a symbol for the cpu type, if your compiler
  41    does not define it automatically.  */
  42
  43 #define IBMR2AIX
  44
  45 /* Use type int rather than a union, to represent Lisp_Object */
  46 /* This is desirable for most machines.  */
  47
  48 #define NO_UNION_TYPE
  49
  50 /* Define CANNOT_DUMP on machines where unexec does not work.
  51    Then the function dump-emacs will not be defined
  52    and temacs will do (load "loadup") automatically unless told otherwise.  */
  53 #ifdef USG5_4
  54 #define CANNOT_DUMP
  55 #endif
  56
  57 #ifndef UNEXEC
  58 #define UNEXEC unexaix.o
  59 #endif
  60
  61 /* Define addresses, macros, change some setup for dump */
  62
  63 #define NO_REMAP
  64
  65 #ifndef USG5_4
  66 #define TEXT_START 0x10000000
  67 #define TEXT_END 0
  68 #define DATA_START 0x20000000
  69 #define DATA_END 0
  70 #endif
  71
  72 /* The data segment in this machine always starts at address 0x20000000.
  73    An address of data cannot be stored correctly in a Lisp object;
  74    we always lose the high bits.  We must tell XPNTR to add them back.  */
  75
  76 #ifndef USG5_4
  77 #define DATA_SEG_BITS 0x20000000
  78 #else
  79 #define DATA_SEG_BITS 0
  80 #endif
  81
  82 #ifdef CANNOT_DUMP
  83 /* Define shared memory segment symbols */
  84
  85 #define PURE_SEG_BITS 0x30000000
  86
  87 /* Use shared memory.  */
  88 /* This is turned off because it does not always work.  See etc/AIX.DUMP.  */
  89 /* #define HAVE_SHM */
  90 #define SHMKEY 5305035          /* used for shared memory code segments */
  91 #endif /* CANNOT_DUMP */
  92
  93 #define N_BADMAG(x) BADMAG(x)
  94 #define N_TXTOFF(x) A_TEXTPOS(x)
  95 #define N_SYMOFF(x) A_SYMPOS(x)
  96 #define A_TEXT_OFFSET(HDR) sizeof(HDR)
  97 /* #define ADJUST_EXEC_HEADER \
  98     unexec_text_start += sizeof(hdr); \
  99     unexec_data_start = ohdr.a_dbase
 100 */
 101 #undef ADDR_CORRECT
 102 #define ADDR_CORRECT(x) ((int)(x))
 103
 104 /* Define C_ALLOCA if this machine does not support a true alloca
 105    and the one written in C should be used instead.
 106    Define HAVE_ALLOCA to say that the system provides a properly
 107    working alloca function and it should be used.
 108    Define neither one if an assembler-language alloca
 109    in the file alloca.s should be used.  */
 110
 111 /* Note: aix3-2.h defines HAVE_ALLOCA; aix3-1.h doesn't.  */
 112 #ifndef HAVE_ALLOCA
 113 #define C_ALLOCA
 114 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 115 #endif
 116
 117 /* Specify the font for X to use.
 118    This used to be Rom14.500; that's nice on the X server shipped with
 119    the RS/6000, but it's not available on other servers.  */
 120 #define X_DEFAULT_FONT "fixed"
 121
 122 /* Here override various assumptions in ymakefile */
 123
 124 #ifdef AIXHFT
 125 #define OBJECTS_MACHINE hftctl.o
 126 #endif
 127
 128 #ifndef USG5_4
 129 #define C_SWITCH_MACHINE -D_BSD
 130 #endif
 131
 132 #ifdef AIX3_2
 133 /* -lpthreads seems to be necessary for Xlib in X11R6, and should be harmless
 134    on older versions of X where it happens to exist.  */
 135 #ifdef HAVE_LIBPTHREADS
 136 #define LIBS_MACHINE -lrts -lIM -liconv -lpthreads
 137 #else
 138 /* IBM's X11R5 use -lIM and -liconv in AIX 3.2.2.  */
 139 #define LIBS_MACHINE -lrts -lIM -liconv
 140 #endif
 141 #else
 142 #ifdef USG5_4
 143 #define LIBS_MACHINE
 144 #else
 145 #define LIBS_MACHINE -lIM
 146 #endif
 147 #endif
 148
 149 #define START_FILES
 150 #define HAVE_SYSVIPC
 151 /*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
 152 #define BROKEN_FIONREAD
 153
 154 /* Don't try to include sioctl.h or ptem.h.  */
 155 #undef NEED_SIOCTL
 156 #undef NEED_PTEM_H
 157
 158 #define ORDINARY_LINK
 159
 160 #ifndef USG5_4
 161 /* sfreed@unm.edu says add -bI:/usr/lpp/X11/bin/smt.exp for AIX 3.2.4.  */
 162 /* marc@sti.com (Marc Pawliger) says ibmrs6000.inp is needed to avoid
 163    linker error for updated X11R5 libraries, which references pthread library
 164    which most machines don't have.  We use the name .inp instead of .imp
 165    because .inp is a better convention to use in make-dist for naming
 166    random input files.  */
 167 #ifdef THIS_IS_MAKEFILE /* Don't use this in configure.  */
 168 #ifdef AIX4
 169 #define LD_SWITCH_MACHINE -Wl,-bnodelcsect
 170 #else /* not AIX4 */
 171 #ifdef HAVE_AIX_SMT_EXP
 172 #define LD_SWITCH_MACHINE -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp,-bI:$(srcdir)/m/ibmrs6000.inp,-bI:/usr/lpp/X11/bin/smt.exp
 173 #else
 174 #define LD_SWITCH_MACHINE -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp,-bI:$(srcdir)/m/ibmrs6000.inp
 175 #endif
 176 #endif /* not AIX4 */
 177 #endif /* THIS_IS_MAKEFILE */
 178
 179 /* Avoid gcc 2.7.x collect2 bug by using /bin/ld instead.  */
 180 #if __GNUC__ == 2 && __GNUC_MINOR__ == 7
 181 #define LD_SWITCH_SITE -B/bin/
 182 #endif
 183
 184 /* AIX supposedly doesn't use this interface, but on the RS/6000
 185    it apparently does.  */
 186 #define NLIST_STRUCT
 187 #endif /* USG5_4 */