src/m/alliant.h

   1 /* alliant.h  Alliant machine running system version 2 or 3.
   2    Copyright (C) 1985, 1986, 1987, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007  Free Software Foundation, Inc.
   4    Note that for version 1 of the Alliant system
   5    you should use alliant1.h instead of this file.
   6    Use alliant4.h for version 4.
   7
   8 This file is part of GNU Emacs.
   9
  10 GNU Emacs is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2, or (at your option)
  13 any later version.
  14
  15 GNU Emacs is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with GNU Emacs; see the file COPYING.  If not, write to
  22 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23 Boston, MA 02110-1301, USA.  */
  24
  25 /* The following line tells the configuration script what sort of
  26    operating system this machine is likely to run.
  27    USUAL-OPSYS="bsd4-2"  */
  28
  29 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  30    is the most significant byte.  */
  31
  32 #define WORDS_BIG_ENDIAN
  33
  34 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  35  * group of arguments and treat it as an array of the arguments.  */
  36
  37 #ifdef ALLIANT_1
  38 #define NO_ARG_ARRAY
  39 #endif
  40
  41 /* Define WORD_MACHINE if addresses and such have
  42  * to be corrected before they can be used as byte counts.  */
  43
  44 #undef WORD_MACHINE
  45
  46 /* Now define a symbol for the cpu type, if your compiler
  47    does not define it automatically:
  48    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  49    are the ones defined so far.  */
  50
  51 #define ALLIANT
  52
  53 /* Use type int rather than a union, to represent Lisp_Object */
  54 /* This is desirable for most machines.  */
  55
  56 #define NO_UNION_TYPE
  57
  58 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  59    the 24-bit bit field into an int.  In other words, if bit fields
  60    are always unsigned.
  61
  62    If you use NO_UNION_TYPE, this flag does not matter.  */
  63 /* On Alliants, bitfields are unsigned. */
  64
  65 #define EXPLICIT_SIGN_EXTEND
  66
  67 /* No load average information available for Alliants. */
  68
  69 #undef LOAD_AVE_TYPE
  70 #undef LOAD_AVE_CVT
  71
  72 /* Define CANNOT_DUMP on machines where unexec does not work.
  73    Then the function dump-emacs will not be defined
  74    and temacs will do (load "loadup") automatically unless told otherwise.  */
  75
  76 #undef CANNOT_DUMP
  77
  78 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  79    pure and impure space as loaded can vary, and even their
  80    relative order cannot be relied on.
  81
  82    Otherwise Emacs assumes that text space precedes data space,
  83    numerically.  */
  84
  85 #undef VIRT_ADDR_VARIES
  86
  87 /* Define NO_REMAP if memory segmentation makes it not work well
  88    to change the boundary between the text section and data section
  89    when Emacs is dumped.  If you define this, the preloaded Lisp
  90    code will not be sharable; but that's better than failing completely.  */
  91 /* Actually, Alliant CONCENTRIX does paging "right":
  92    data pages are copy-on-write, which means that the pure data areas
  93    are shared automatically and remapping is not necessary.  */
  94
  95 #define NO_REMAP
  96
  97 /* Alliant needs special crt0.o because system version is not reentrant */
  98
  99 #define START_FILES crt0.o
 100
 101 /* Alliant dependent code for dumping executing image.
 102    See crt0.c code for alliant.  */
 103
 104 #define ADJUST_EXEC_HEADER {\
 105 extern int _curbrk, _setbrk;\
 106 _setbrk = _curbrk;\
 107 hdr.a_bss_addr = bss_start;\
 108 unexec_text_start = hdr.a_text_addr;}
 109
 110 /* cc screws up on long names.  Try making cpp replace them.  */
 111
 112 #ifdef ALLIANT_1
 113 #define Finsert_abbrev_table_description Finsert_abbrev_table_descrip
 114 #define internal_with_output_to_temp_buffer internal_with_output_to_tem
 115 #endif
 116
 117 /* "vector" is a typedef in /usr/include/machine/reg.h, so its use as
 118    a variable name causes errors when compiling under ANSI C.  */
 119
 120 #define vector xxvector
 121
 122 /* arch-tag: 0ad5f932-f29a-4458-a24c-496cafdfd50d
 123    (do not change this comment) */