src/m/ibmrs6000.h

   1 /* R2 AIX machine/system dependent defines
   2
   3 Copyright (C) 1988, 2001-2012  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 3 of the License, or
  10 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* The data segment in this machine always starts at address 0x20000000.
  22    An address of data cannot be stored correctly in a Lisp object;
  23    we always lose the high bits.  We must tell XPNTR to add them back.  */
  24 #define DATA_START 0x20000000
  25 #define DATA_SEG_BITS 0x20000000
  26
  27 #ifndef NLIST_STRUCT
  28 /* AIX supposedly doesn't use this interface, but on the RS/6000
  29    it apparently does.  */
  30 #define NLIST_STRUCT
  31 #endif
  32
  33 #undef ADDR_CORRECT
  34 #define ADDR_CORRECT(x) ((int)(x))
  35
  36 /*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
  37 #define BROKEN_FIONREAD
  38 /* As we define BROKEN_FIONREAD, SIGIO will be undefined in systty.h.
  39    But, on AIX, SIGAIO, SIGPTY, and SIGPOLL are defined as SIGIO,
  40    which causes compilation error at init_signals in sysdep.c.  So, we
  41    define these macros so that syssignal.h detects them and undefine
  42    SIGAIO, SIGPTY and SIGPOLL.  */
  43 #define BROKEN_SIGAIO
  44 #define BROKEN_SIGPTY
  45 #define BROKEN_SIGPOLL
  46