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 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="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 #define BIG_ENDIAN
  38
  39 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  40  * group of arguments and treat it as an array of the arguments.  */
  41
  42 #define NO_ARG_ARRAY
  43
  44 /* Now define a symbol for the cpu type, if your compiler
  45    does not define it automatically.  */
  46
  47 #define IBMR2AIX
  48
  49 /* Use type int rather than a union, to represent Lisp_Object */
  50 /* This is desirable for most machines.  */
  51
  52 #define NO_UNION_TYPE
  53
  54 /* Define CANNOT_DUMP on machines where unexec does not work.
  55    Then the function dump-emacs will not be defined
  56    and temacs will do (load "loadup") automatically unless told otherwise.  */
  57 /* #define CANNOT_DUMP */
  58
  59 #define UNEXEC unexaix.o
  60
  61 /* Define addresses, macros, change some setup for dump */
  62
  63 #define NO_REMAP
  64
  65 #define TEXT_START 0x10000000
  66 #define TEXT_END 0
  67 #define DATA_START 0x20000000
  68 #define DATA_END 0
  69
  70 /* The data segment in this machine always starts at address 0x20000000.
  71    An address of data cannot be stored correctly in a Lisp object;
  72    we always lose the high bits.  We must tell XPNTR to add them back.  */
  73
  74 #define DATA_SEG_BITS 0x20000000
  75
  76 #ifdef CANNOT_DUMP
  77 /* Define shared memory segment symbols */
  78
  79 #define PURE_SEG_BITS 0x30000000
  80
  81 /* Use shared memory.  */
  82 /* This is turned off because it does not always work.  See etc/AIX.DUMP.  */
  83 /* #define HAVE_SHM */
  84 #define SHMKEY 5305035          /* used for shared memory code segments */
  85 #endif /* CANNOT_DUMP */
  86
  87 #define N_BADMAG(x) BADMAG(x)
  88 #define N_TXTOFF(x) A_TEXTPOS(x)
  89 #define N_SYMOFF(x) A_SYMPOS(x)
  90 #define A_TEXT_OFFSET(HDR) sizeof(HDR)
  91 /* #define ADJUST_EXEC_HEADER \
  92     unexec_text_start += sizeof(hdr); \
  93     unexec_data_start = ohdr.a_dbase
  94 */
  95 #undef ADDR_CORRECT
  96 #define ADDR_CORRECT(x) ((int)(x))
  97
  98 /* Define C_ALLOCA if this machine does not support a true alloca
  99    and the one written in C should be used instead.
 100    Define HAVE_ALLOCA to say that the system provides a properly
 101    working alloca function and it should be used.
 102    Define neither one if an assembler-language alloca
 103    in the file alloca.s should be used.  */
 104
 105 /* Note: aix3-2.h defines HAVE_ALLOCA; aix3-1.h doesn't.  */
 106 #ifndef HAVE_ALLOCA
 107 #define C_ALLOCA
 108 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 109 #endif
 110
 111 /* Specify the font for X to use.
 112    This used to be Rom14.500; that's nice on the X server shipped with
 113    the RS/6000, but it's not available on other servers.  */
 114 #define X_DEFAULT_FONT "fixed"
 115
 116 /* Here override various assumptions in ymakefile */
 117
 118 #define OBJECTS_MACHINE hftctl.o
 119 #define C_SWITCH_MACHINE -D_BSD
 120 #define LIBS_MACHINE -lrts
 121 #define START_FILES
 122 #define HAVE_DUP2
 123 #define HAVE_GETTIMEOFDAY
 124 #define HAVE_SYSVIPC
 125 #define HAVE_SETSID
 126 #define HAVE_GETWD
 127 /*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
 128 #define BROKEN_FIONREAD
 129
 130 /* Don't try to include sioctl.h or ptem.h.  */
 131 #undef NEED_SIOCTL
 132 #undef NEED_PTEM_H
 133
 134 #undef LINKER
 135 #define LINKER cc -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp