src/m-tek4300.h

   1 /* m- file for tek4300.
   2    Copyright (C) 1988 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 /* The following three symbols give information on
  22  the size of various data types.  */
  23
  24 #define SHORTBITS 16            /* Number of bits in a short */
  25
  26 #define INTBITS 32              /* Number of bits in an int */
  27
  28 #define LONGBITS 32             /* Number of bits in a long */
  29
  30 /* 68000 has lowest-numbered byte as most significant */
  31
  32 #define 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 #undef NO_ARG_ARRAY
  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 /* Define how to take a char and sign-extend into an int.
  45    On machines where char is signed, this is a no-op.  */
  46
  47 #define SIGN_EXTEND_CHAR(c) (c)
  48
  49 /* Now define a symbol for the cpu type, if your compiler
  50    does not define it automatically.  */
  51
  52 #ifndef tek4300
  53 #define tek4300
  54 #endif
  55
  56 /* Use type int rather than a union, to represent Lisp_Object */
  57
  58 #define NO_UNION_TYPE
  59
  60 /* Data type of load average, as read out of kmem.  */
  61
  62 #define LOAD_AVE_TYPE long
  63
  64 /* Convert that into an integer that is 100 for a load average of 1.0  */
  65
  66 #define LOAD_AVE_CVT(x) (x)
  67
  68 /* Define NO_REMAP if memory segmentation makes it not work well
  69    to change the boundary between the text section and data section
  70    when Emacs is dumped.  If you define this, the preloaded Lisp
  71    code will not be sharable; but that's better than failing completely.  */
  72
  73 #define NO_REMAP
  74
  75 /* Define C_ALLOCA if this machine does not support a true alloca
  76    and the one written in C should be used instead. */
  77
  78 #define C_ALLOCA
  79
  80 /* setjmp and longjmp can safely replace _setjmp and _longjmp, */
  81
  82 #define _longjmp longjmp
  83 #define _setjmp setjmp
  84
  85 /* The text segment always starts at a fixed address.
  86    This way we don't need to have a label _start defined.  */
  87
  88 #define TEXT_START 0
  89
  90 /* The Tektronix exec struct for ZMAGIC files is struct zexec */
  91
  92 #define EXEC_HDR_TYPE struct zexec
  93
  94 /* The entry-point label (start of text segment) is `start', not `__start'.  */
  95
  96 #define DEFAULT_ENTRY_ADDRESS start