src/m/ibmrs6000.h

   1 /* R2 AIX machine/system dependent defines
   2
   3 Copyright (C) 1988, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
   4   2009, 2010  Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software: you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21
  22 /* The data segment in this machine always starts at address 0x20000000.
  23    An address of data cannot be stored correctly in a Lisp object;
  24    we always lose the high bits.  We must tell XPNTR to add them back.  */
  25 #define TEXT_START 0x10000000
  26 #define DATA_START 0x20000000
  27 #define WORDS_BIG_ENDIAN
  28 #define DATA_SEG_BITS 0x20000000
  29
  30 #ifndef NLIST_STRUCT
  31 /* AIX supposedly doesn't use this interface, but on the RS/6000
  32    it apparently does.  */
  33 #define NLIST_STRUCT
  34 #endif
  35
  36 #undef ADDR_CORRECT
  37 #define ADDR_CORRECT(x) ((int)(x))
  38
  39 /*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
  40 #define BROKEN_FIONREAD
  41 /* As we define BROKEN_FIONREAD, SIGIO will be undefined in systty.h.
  42    But, on AIX, SIGAIO, SIGPTY, and SIGPOLL are defined as SIGIO,
  43    which causes compilation error at init_signals in sysdep.c.  So, we
  44    define these macros so that syssignal.h detects them and undefine
  45    SIGAIO, SIGPTY and SIGPOLL.  */
  46 #define BROKEN_SIGAIO
  47 #define BROKEN_SIGPTY
  48 #define BROKEN_SIGPOLL
  49
  50 /* arch-tag: 028318ee-a7ae-4a08-804d-cc1e6588d003
  51    (do not change this comment) */