code.delx.au - gnu-emacs/blob - src/m/alliant.h

   1 /* alliant.h  Alliant machine running system version 2 or 3.
   2    Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
   3    Note that for version 1 of the Alliant system
   4    you should use alliant1.h instead of this file.
   5    Use alliant4.h for version 4.
   6
   7 This file is part of GNU Emacs.
   8
   9 GNU Emacs is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GNU Emacs is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU Emacs; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  22
  23 /* The following line tells the configuration script what sort of
  24    operating system this machine is likely to run.
  25    USUAL-OPSYS="bsd4-2"  */
  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 #ifdef ALLIANT_1
  36 #define NO_ARG_ARRAY
  37 #endif
  38
  39 /* Define WORD_MACHINE if addresses and such have
  40  * to be corrected before they can be used as byte counts.  */
  41
  42 #undef WORD_MACHINE
  43
  44 /* Now define a symbol for the cpu type, if your compiler
  45    does not define it automatically:
  46    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  47    are the ones defined so far.  */
  48
  49 #define ALLIANT
  50
  51 /* Use type int rather than a union, to represent Lisp_Object */
  52 /* This is desirable for most machines.  */
  53
  54 #define NO_UNION_TYPE
  55
  56 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  57    the 24-bit bit field into an int.  In other words, if bit fields
  58    are always unsigned.
  59
  60    If you use NO_UNION_TYPE, this flag does not matter.  */
  61 /* On Alliants, bitfields are unsigned. */
  62
  63 #define EXPLICIT_SIGN_EXTEND
  64
  65 /* No load average information available for Alliants. */
  66
  67 #undef LOAD_AVE_TYPE
  68 #undef LOAD_AVE_CVT
  69
  70 /* Define CANNOT_DUMP on machines where unexec does not work.
  71    Then the function dump-emacs will not be defined
  72    and temacs will do (load "loadup") automatically unless told otherwise.  */
  73
  74 #undef CANNOT_DUMP
  75
  76 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  77    pure and impure space as loaded can vary, and even their
  78    relative order cannot be relied on.
  79
  80    Otherwise Emacs assumes that text space precedes data space,
  81    numerically.  */
  82
  83 #undef VIRT_ADDR_VARIES
  84
  85 /* Define C_ALLOCA if this machine does not support a true alloca
  86    and the one written in C should be used instead.
  87    Define HAVE_ALLOCA to say that the system provides a properly
  88    working alloca function and it should be used.
  89    Define neither one if an assembler-language alloca
  90    in the file alloca.s should be used.  */
  91
  92 #undef C_ALLOCA
  93 #define HAVE_ALLOCA
  94
  95 #ifdef ALLIANT_1
  96 #define C_ALLOCA
  97 #undef HAVE_ALLOCA
  98 #endif /* ALLIANT_1 */
  99
 100 /* Define NO_REMAP if memory segmentation makes it not work well
 101    to change the boundary between the text section and data section
 102    when Emacs is dumped.  If you define this, the preloaded Lisp
 103    code will not be sharable; but that's better than failing completely.  */
 104 /* Actually, Alliant CONCENTRIX does paging "right":
 105    data pages are copy-on-write, which means that the pure data areas
 106    are shared automatically and remapping is not necessary.  */
 107
 108 #define NO_REMAP
 109
 110 /* Alliant needs special crt0.o because system version is not reentrant */
 111
 112 #define START_FILES crt0.o
 113
 114 /* Alliant dependent code for dumping executing image.
 115    See crt0.c code for alliant.  */
 116
 117 #define ADJUST_EXEC_HEADER {\
 118 extern int _curbrk, _setbrk;\
 119 _setbrk = _curbrk;\
 120 hdr.a_bss_addr = bss_start;\
 121 unexec_text_start = hdr.a_text_addr;}
 122
 123 /* cc screws up on long names.  Try making cpp replace them.  */
 124
 125 #ifdef ALLIANT_1
 126 #define Finsert_abbrev_table_description Finsert_abbrev_table_descrip
 127 #define internal_with_output_to_temp_buffer internal_with_output_to_tem
 128 #endif
 129
 130 /* "vector" is a typedef in /usr/include/machine/reg.h, so its use as
 131    a variable name causes errors when compiling under ANSI C.  */
 132
 133 #define vector xxvector