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, 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="aix3-1"  */
  24
  25 /* The following three symbols give information on
  26  the size of various data types.  */
  27
  28 #define SHORTBITS 16            /* Number of bits in a short */
  29
  30 #define INTBITS 32              /* Number of bits in an int */
  31
  32 #define LONGBITS 32             /* Number of bits in a long */
  33
  34 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
  35    is the most significant byte.  */
  36
  37 /* This conflicts with something in the system headers,
  38    and isn't currently used, since NO_UNION_TYPE is defined.  */
  39 #if 0
  40 #define BIG_ENDIAN
  41 #endif
  42
  43 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  44  * group of arguments and treat it as an array of the arguments.  */
  45
  46 #define NO_ARG_ARRAY
  47
  48 /* Now define a symbol for the cpu type, if your compiler
  49    does not define it automatically.  */
  50
  51 #define IBMR2AIX
  52
  53 /* Use type int rather than a union, to represent Lisp_Object */
  54 /* This is desirable for most machines.  */
  55
  56 #define NO_UNION_TYPE
  57
  58 /* Define CANNOT_DUMP on machines where unexec does not work.
  59    Then the function dump-emacs will not be defined
  60    and temacs will do (load "loadup") automatically unless told otherwise.  */
  61 /* #define CANNOT_DUMP */
  62
  63 #define UNEXEC unexaix.o
  64
  65 /* Define addresses, macros, change some setup for dump */
  66
  67 #define NO_REMAP
  68
  69 #define TEXT_START 0x10000000
  70 #define TEXT_END 0
  71 #define DATA_START 0x20000000
  72 #define DATA_END 0
  73
  74 /* The data segment in this machine always starts at address 0x20000000.
  75    An address of data cannot be stored correctly in a Lisp object;
  76    we always lose the high bits.  We must tell XPNTR to add them back.  */
  77
  78 #define DATA_SEG_BITS 0x20000000
  79
  80 #ifdef CANNOT_DUMP
  81 /* Define shared memory segment symbols */
  82
  83 #define PURE_SEG_BITS 0x30000000
  84
  85 /* Use shared memory.  */
  86 /* This is turned off because it does not always work.  See etc/AIX.DUMP.  */
  87 /* #define HAVE_SHM */
  88 #define SHMKEY 5305035          /* used for shared memory code segments */
  89 #endif /* CANNOT_DUMP */
  90
  91 #define N_BADMAG(x) BADMAG(x)
  92 #define N_TXTOFF(x) A_TEXTPOS(x)
  93 #define N_SYMOFF(x) A_SYMPOS(x)
  94 #define A_TEXT_OFFSET(HDR) sizeof(HDR)
  95 /* #define ADJUST_EXEC_HEADER \
  96     unexec_text_start += sizeof(hdr); \
  97     unexec_data_start = ohdr.a_dbase
  98 */
  99 #undef ADDR_CORRECT
 100 #define ADDR_CORRECT(x) ((int)(x))
 101
 102 /* Define C_ALLOCA if this machine does not support a true alloca
 103    and the one written in C should be used instead.
 104    Define HAVE_ALLOCA to say that the system provides a properly
 105    working alloca function and it should be used.
 106    Define neither one if an assembler-language alloca
 107    in the file alloca.s should be used.  */
 108
 109 /* Note: aix3-2.h defines HAVE_ALLOCA; aix3-1.h doesn't.  */
 110 #ifndef HAVE_ALLOCA
 111 #define C_ALLOCA
 112 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 113 #endif
 114
 115 /* Specify the font for X to use.
 116    This used to be Rom14.500; that's nice on the X server shipped with
 117    the RS/6000, but it's not available on other servers.  */
 118 #define X_DEFAULT_FONT "fixed"
 119
 120 /* Here override various assumptions in ymakefile */
 121
 122 #define OBJECTS_MACHINE hftctl.o
 123 #define C_SWITCH_MACHINE -D_BSD
 124
 125 #ifdef AIX3_2
 126 /* IBM's X11R5 use -lIM and -liconv in AIX 3.2.2.  */
 127 #define LIBS_MACHINE -lrts -lIM -liconv
 128 #else
 129 #define LIBS_MACHINE -lIM
 130 #endif
 131
 132 #define START_FILES
 133 #define HAVE_SYSVIPC
 134 #define HAVE_GETWD
 135 /*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
 136 #define BROKEN_FIONREAD
 137
 138 /* Don't try to include sioctl.h or ptem.h.  */
 139 #undef NEED_SIOCTL
 140 #undef NEED_PTEM_H
 141
 142 #define ORDINARY_LINK
 143 /* sfreed@unm.edu says add -bI:/usr/lpp/X11/bin/smt.exp for AIX 3.2.4.  */
 144 #ifdef HAVE_AIX_SMT_EXP
 145 #define LD_SWITCH_MACHINE -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp,-bI:/usr/lpp/X11/bin/smt.exp
 146 #else
 147 #define LD_SWITCH_MACHINE -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp
 148 #endif
 149
 150 /* AIX supposedly doesn't use this interface, but on thr RS/6000
 151    it apparently does.  */
 152 #define NLIST_STRUCT