src/m/ibmrt-aix.h

   1 /* RTPC AIX machine/system dependent defines
   2    Copyright (C) 1988, 1999, 2002, 2003, 2004,
   3                  2005, 2006 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 2, or (at your option)
  10 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; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22
  23 /* The following line tells the configuration script what sort of
  24    operating system this machine is likely to run.
  25    USUAL-OPSYS="usg5-2-2"  */
  26
  27 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  28    is the most significant byte.  */
  29
  30 #define WORDS_BIG_ENDIAN
  31
  32 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  33  * group of arguments and treat it as an array of the arguments.  */
  34
  35 #define NO_ARG_ARRAY
  36
  37 /* Now define a symbol for the cpu type, if your compiler
  38    does not define it automatically.  */
  39
  40 #ifndef IBMAIX
  41 #define IBMAIX
  42 #endif
  43
  44 /* Use type int rather than a union, to represent Lisp_Object */
  45 /* This is desirable for most machines.  */
  46
  47 #define NO_UNION_TYPE
  48
  49 /* No load average information appears in the AIX kernel.  VRM has this
  50    info, and if anyone desires they should fix fns.c to get it out of VRM */
  51
  52 /* Define CANNOT_DUMP on machines where unexec does not work.
  53    Then the function dump-emacs will not be defined
  54    and temacs will do (load "loadup") automatically unless told otherwise.  */
  55
  56 /* #define CANNOT_DUMP */
  57
  58 /* Define addresses, macros, change some setup for dump */
  59
  60 #undef COFF
  61 #define NO_REMAP
  62 #undef static
  63   /* Since NO_REMAP, problem with statics doesn't exist */
  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 #define N_BADMAG(x) BADMAG(x)
  77 #define N_TXTOFF(x) A_TEXTPOS(x)
  78 #define N_SYMOFF(x) A_SYMPOS(x)
  79 #define A_TEXT_OFFSET(HDR) sizeof(HDR)
  80 #define ADJUST_EXEC_HEADER \
  81     unexec_text_start += sizeof(hdr); \
  82     unexec_data_start = ohdr.a_dbase
  83 #undef ADDR_CORRECT
  84 #define ADDR_CORRECT(x) ((int)(x))
  85
  86 /* This is the offset of the executable's text, from the start of the file.  */
  87
  88 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
  89
  90 /* AIX has PTYs, so define here, along with macros needed to make them work. */
  91
  92 #define HAVE_PTYS
  93 #define PTY_ITERATION for (i=0; i<256; i++)
  94 #define PTY_NAME_SPRINTF sprintf (ptyname, "/dev/ptc%d", i);
  95
  96 #define PTY_TTY_NAME_SPRINTF                            \
  97 { /* Check that server side not already open */         \
  98   if ((ioctl (*ptyv, PTYSTATUS, 0) & 0xFFFF) != 0)      \
  99     {                                                   \
 100       emacs_close (*ptyv);                              \
 101       continue;                                         \
 102     }                                                   \
 103   /* And finally to be sure we can open it later */     \
 104   sprintf (ptyname, "/dev/pts%d", i);                   \
 105   signal (SIGHUP,SIG_IGN);                              \
 106 }     /* ignore hangup at process end */
 107
 108 /* TIOCNOTTY doesn't occur on AIX, but the rest
 109    of the conditionalized code in process.c does
 110    the right thing if we fake this out.  */
 111 #define TIOCNOTTY IOCTYPE
 112
 113 /* AIX has IPC. It also has sockets, and either can be used for client/server.
 114    I would suggest the client/server code be changed to use HAVE_SOCKETS rather
 115    than BSD_SYSTEM as the conditional if sockets provide any advantages. */
 116
 117 #define HAVE_SYSVIPC
 118
 119 /* AIX has sockets */
 120
 121 #define HAVE_SOCKETS
 122 /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
 123
 124 /* Specify the font for X to use.  */
 125
 126 #define X_DEFAULT_FONT "Rom14.500"
 127
 128 /* Here override various assumptions in ymakefile */
 129
 130 /* On AIX 2.2.1, use these definitions instead
 131 #define C_SWITCH_MACHINE -I/usr/include -Nn2000
 132 #define LIBS_MACHINE -lX -lrts
 133 */
 134
 135 #define C_SWITCH_MACHINE -I/usr/include -I/usr/include/bsd -Nn2000
 136 #define LIBS_MACHINE -lXMenu -lX -lsock -lbsd -lrts
 137
 138 #define OBJECTS_MACHINE hftctl.o
 139 #define START_FILES /lib/crt0.o
 140 /* -lXMenu, -lX must precede -lsock, -lbsd */
 141 #define LD_SWITCH_MACHINE -n -T0x10000000 -K -e start
 142
 143 #if 0 /* I refuse to promulgate a recommendation that would make
 144          users unable to debug - RMS.  */
 145 /* delete the following line to foil optimization, enable debugging */
 146 #define C_DEBUG_SWITCH -O
 147 #endif
 148
 149
 150 /* Setup to do some things BSD way - these won't work previous to AIX 2.1.2 */
 151
 152 #include </usr/include/bsd/BSDtoAIX.h>
 153 #define BSTRING
 154
 155 /* AIX utimes allegedly causes SIGSEGV.  */
 156 #undef HAVE_UTIMES /* override configuration decision */
 157
 158 /* AIX defines FIONREAD, but it does not work.  */
 159 #define BROKEN_FIONREAD
 160
 161 /* rocky@watson.ibm.com says this is needed.  */
 162 #define HAVE_FTIME
 163
 164 /* arch-tag: eea85307-0ca9-4a9c-a4f6-89fad7591d28
 165    (do not change this comment) */