gdb/xm-rs6000.h

   1 /* Parameters for hosting on an RS6000, for GDB, the GNU debugger.
   2    Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
   3    Contributed by IBM Corporation.
   4
   5 This file is part of GDB.
   6
   7 This program 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 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program 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 this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /* The following text is taken from config/rs6000.mh:
  22  * # The IBM version of /usr/include/rpc/rpc.h has a bug -- it says
  23  * # `extern fd_set svc_fdset;' without ever defining the type fd_set.
  24  * # Unfortunately this occurs in the vx-share code, which is not configured
  25  * # like the rest of GDB (e.g. it doesn't include "defs.h").
  26  * # We circumvent this bug by #define-ing fd_set here, but undefining it in
  27  * # the xm-rs6000.h file before ordinary modules try to use it.  FIXME, IBM!
  28  * MH_CFLAGS='-Dfd_set=int'
  29  * So, here we do the undefine...which has to occur before we include
  30  * <sys/select.h> below.
  31  */
  32 #undef fd_set
  33
  34 #include <sys/select.h>
  35
  36 /* Big end is at the low address */
  37
  38 #define HOST_BYTE_ORDER BIG_ENDIAN
  39
  40 #define HAVE_TERMIO 1
  41 #define USG 1
  42 #define HAVE_SIGSETMASK 1
  43
  44 /* AIX declares the mem functions differently than defs.h does.  AIX is
  45    right, but defs.h works on more old systems.  For now, override it.  */
  46
  47 #define MEM_FNS_DECLARED 1
  48
  49 /* This system requires that we open a terminal with O_NOCTTY for it to
  50    not become our controlling terminal.  */
  51
  52 #define USE_O_NOCTTY
  53
  54 /* Get rid of any system-imposed stack limit if possible.  */
  55
  56 #define SET_STACK_LIMIT_HUGE
  57
  58 /* Brain death inherited from PC's pervades.  */
  59 #undef NULL
  60 #define NULL 0
  61
  62 /* The IBM compiler requires this in order to properly compile alloca().  */
  63 #pragma alloca
  64
  65 /* There is no vfork.  */
  66
  67 #define vfork   fork
  68
  69 /* Setpgrp() takes arguments, unlike ordinary Sys V's.  */
  70
  71 #define SETPGRP_ARGS 1
  72
  73 /* /usr/include/stdlib.h always uses void* and void,
  74    even when __STDC__ isn't defined. */
  75 #define MALLOC_INCOMPATIBLE
  76 extern void *malloc PARAMS ((size_t size));
  77 extern void *realloc PARAMS ((void *ptr, size_t size));
  78 extern void free PARAMS ((void *));
  79
  80 /* AIX doesn't have strdup, so we need to declare it for libiberty */
  81 extern char *strdup PARAMS ((char *));
  82
  83 /* Signal handler for SIGWINCH `window size changed'. */
  84
  85 #define SIGWINCH_HANDLER  aix_resizewindow
  86 extern  void    aix_resizewindow ();
  87
  88 /* `lines_per_page' and `chars_per_line' are local to utils.c. Rectify this. */
  89
  90 #define SIGWINCH_HANDLER_BODY   \
  91                                                                         \
  92 /* Respond to SIGWINCH `window size changed' signal, and reset GDB's    \
  93    window settings approproatelt. */                                    \
  94                                                                         \
  95 void                                            \
  96 aix_resizewindow ()                             \
  97 {                                               \
  98   int fd = fileno (stdout);                     \
  99   if (isatty (fd)) {                            \
 100     int val;                                    \
 101                                                 \
 102     val = atoi (termdef (fd, 'l'));             \
 103     if (val > 0)                                \
 104       lines_per_page = val;                     \
 105     val = atoi (termdef (fd, 'c'));             \
 106     if (val > 0)                                \
 107       chars_per_line = val;                     \
 108   }                                             \
 109 }