src/m/irist.h

   1 /* machine description file for Silicon Graphics Iris 2500 Turbos;
   2    also possibly for non-turbo Irises with system release 2.5.
   3    Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004,
   4                  2005, 2006, 2007  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 2, or (at your option)
  11 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; see the file COPYING.  If not, write to
  20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23
  24 /* The following line tells the configuration script what sort of
  25    operating system this machine is likely to run.
  26    USUAL-OPSYS="note"
  27 NOTE-START
  28 Version 18 said to work; use -opsystem=irist3-5 for system version 2.5
  29 and -opsystem=iris3-6 for system versions 3.6 and up.
  30 NOTE-END */
  31
  32 #if 0
  33   Message-Id: <8705050653.AA20004@orville.arpa>
  34   Subject: gnu emacs 18.41 on iris [23].5 machines
  35   Date: 04 May 87 23:53:11 PDT (Mon)
  36   From: raible@orville.arpa
  37
  38   Aside from the SIGIOT, I know of only one bug, a real strange one:
  39   I wrote a utimes interface, which copies elements from timevals
  40   to utimbufs. This code is known good.  The problem is that in
  41   emacs, the utime doesn't seem to take effect (i.e. doesn't change the
  42   dates at all) unless I call report_file_error *after* the utime returns!
  43
  44     if (utime (name, &utb) < 0)
  45       return;
  46     else
  47       /* XXX XXX XXX */
  48       /* For some reason, if this is taken out, then the utime above breaks! */
  49       /* (i.e. it doesn't set the time. This just makes no sense... */
  50       /* Eric - May 4, 1987 */
  51       report_file_error ("Worked just find\n", Qnil);
  52
  53   Without any sort of debugger that works on emacs (I know... but I dont have
  54   *time* right now to start with gdb), it was quite time consuming to track
  55   it down to this.
  56
  57   But since this code is only used for an optional 4th argument to one command
  58   (copy-file), it would say that it is non-critical...
  59 #endif /* 0 */
  60
  61 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  62    is the most significant byte.  */
  63
  64 #define WORDS_BIG_ENDIAN
  65
  66 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  67  * group of arguments and treat it as an array of the arguments.  */
  68
  69 /* #define NO_ARG_ARRAY */
  70
  71 /* Define WORD_MACHINE if addresses and such have
  72  * to be corrected before they can be used as byte counts.  */
  73
  74 /* #define WORD_MACHINE */
  75
  76 /* Now define a symbol for the cpu type, if your compiler
  77    does not define it automatically:
  78    Ones defined so far include vax, m68000, ns16000, pyramid,
  79    orion, tahoe, APOLLO and many others */
  80
  81 #ifndef m68000
  82 #define m68000
  83 #endif
  84
  85 /* Use type int rather than a union, to represent Lisp_Object */
  86 /* This is desirable for most machines.  */
  87
  88 #define NO_UNION_TYPE
  89
  90 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  91    the 24-bit bit field into an int.  In other words, if bit fields
  92    are always unsigned.
  93
  94    If you use NO_UNION_TYPE, this flag does not matter.  */
  95
  96 #define EXPLICIT_SIGN_EXTEND
  97
  98 /* Data type of load average, as read out of kmem.  */
  99
 100 #define LOAD_AVE_TYPE long
 101
 102 /* Convert that into an integer that is 100 for a load average of 1.0  */
 103
 104 #define FSCALE 1.0
 105 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
 106
 107 /* Define CANNOT_DUMP on machines where unexec does not work.
 108    Then the function dump-emacs will not be defined
 109    and temacs will do (load "loadup") automatically unless told otherwise.  */
 110
 111 /* #define CANNOT_DUMP */
 112
 113 /* Define VIRT_ADDR_VARIES if the virtual addresses of
 114    pure and impure space as loaded can vary, and even their
 115    relative order cannot be relied on.
 116
 117    Otherwise Emacs assumes that text space precedes data space,
 118    numerically.  */
 119
 120 /* #define VIRT_ADDR_VARIES */
 121
 122 /* Define NO_REMAP if memory segmentation makes it not work well
 123    to change the boundary between the text section and data section
 124    when Emacs is dumped.  If you define this, the preloaded Lisp
 125    code will not be sharable; but that's better than failing completely.  */
 126
 127 /* #define NO_REMAP */
 128
 129 /* There is an inconsistency between the sgi assembler, linker which barfs
 130    on these. */
 131
 132 #define internal_with_output_to_temp_buffer     stupid_long_name1
 133 #define Finsert_abbrev_table_description        stupid_long_name2
 134
 135 /* arch-tag: 4076b26c-1fe6-4c28-94f3-3c863f074767
 136    (do not change this comment) */