src/m/amdahl.h

   1 /* amdahl machine description file
   2    Copyright (C) 1987, 1999, 2002 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /*
  22 This file for amdahl_uts created by modifying the template.h
  23 by Jishnu Mukerji 3/1/87
  24
  25 The following line tells the configuration script what sort of
  26 operating system this machine is likely to run.
  27 USUAL-OPSYS="usg5-2-2"
  28
  29 This file works with the Amdahl uts native C compiler. The 5.2u370
  30 compiler is so brain damaged that it is not even worth trying to use it.
  31 */
  32
  33 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  34    is the most significant byte.  */
  35
  36 #define WORDS_BIG_ENDIAN
  37
  38 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  39  * group of arguments and treat it as an array of the arguments.  */
  40
  41 #undef NO_ARG_ARRAY
  42
  43 /* Define WORD_MACHINE if addresses and such have
  44  * to be corrected before they can be used as byte counts.  */
  45
  46 #define WORD_MACHINE /* not actually used anywhere yet! */
  47
  48 /* Now define a symbol for the cpu type, if your compiler
  49    does not define it automatically:
  50    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  51    are the ones defined so far.  */
  52
  53 /* uts gets defined automatically */
  54 /* However for clarity define amdahl_uts */
  55 #define amdahl_uts
  56
  57 /* Use type int rather than a union, to represent Lisp_Object */
  58 /* This is desirable for most machines.  */
  59
  60 #define NO_UNION_TYPE
  61
  62 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  63    the 24-bit bit field into an int.  In other words, if bit fields
  64    are always unsigned.
  65
  66    If you use NO_UNION_TYPE, this flag does not matter.  */
  67
  68 #define EXPLICIT_SIGN_EXTEND
  69
  70 /* Data type of load average, as read out of kmem.  */
  71
  72 /* #define LOAD_AVE_TYPE long*/
  73
  74 /* Convert that into an integer that is 100 for a load average of 1.0  */
  75
  76 /*#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)*/
  77
  78 /* Define CANNOT_DUMP on machines where unexec does not work.
  79    Then the function dump-emacs will not be defined
  80    and temacs will do (load "loadup") automatically unless told otherwise.  */
  81
  82 /* #define CANNOT_DUMP
  83
  84 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  85    pure and impure space as loaded can vary, and even their
  86    relative order cannot be relied on.
  87
  88    Otherwise Emacs assumes that text space precedes data space,
  89    numerically.  */
  90
  91 /* #define VIRT_ADDR_VARIES*/
  92
  93 /* Define NO_REMAP if memory segmentation makes it not work well
  94    to change the boundary between the text section and data section
  95    when Emacs is dumped.  If you define this, the preloaded Lisp
  96    code will not be sharable; but that's better than failing completely.  */
  97
  98 /*#define NO_REMAP*/
  99
 100 #define TERMINFO
 101
 102 /* The usual definition of XINT, which involves shifting, does not
 103    sign-extend properly on this machine.  */
 104
 105 #define XINT(i) (((sign_extend_temp=(i)) & 0x00800000) \
 106                  ? (sign_extend_temp | 0xFF000000) \
 107                  : (sign_extend_temp & 0x00FFFFFF))
 108
 109 #ifdef emacs /* Don't do this when making xmakefile! */
 110 extern int sign_extend_temp;
 111 #endif
 112
 113 /* The following needed to load the proper crt0.o and to get the
 114    proper declaration of data_start in the #undef NO_REMAP case */
 115
 116 #ifndef NO_REMAP
 117 #define START_FILES pre-crt0.o /lib/crt0.o
 118 #endif
 119
 120 /* Perhaps this means that the optimizer isn't safe to use.  */
 121
 122 #define C_OPTIMIZE_SWITCH
 123
 124 /* Put text and data on non-segment boundary; makes image smaller */
 125
 126 #define LD_SWITCH_MACHINE       -N
 127
 128 /* When writing the 'xemacs' file, make text segment ro */
 129 #define EXEC_MAGIC      0410
 130
 131 /* Mask for address bits within a memory segment */
 132 #define SEGSIZ 0x10000          /* Should this not be defined elsewhere ? */
 133 #define SEGMENT_MASK (SEGSIZ - 1)
 134
 135 /* Compensate for error in signal.h.  */
 136 #define NSIG_MINIMUM 20