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