sim/ppc/words.h

   1 /* This file is part of psim (model of the PowerPC(tm) architecture)
   2
   3    Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License
   7    as published by the Free Software Foundation; either version 2 of
   8    the License, or (at your option) any later version.
   9
  10    This library is distributed in the hope that it will be useful, but
  11    WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with this library; if not, write to the Free Software
  17    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19    --
  20
  21    PowerPC is a trademark of International Business Machines Corporation. */
  22
  23
  24 /* Basic type sizes for the PowerPC */
  25
  26 #ifndef _WORDS_H_
  27 #define _WORDS_H_
  28
  29 /* TYPES:
  30
  31      natural*   sign determined by host
  32      signed*    signed type of the given size
  33      unsigned*  The corresponding insigned type
  34
  35    SIZES
  36
  37      *NN        Size based on the number of bits
  38      *_NN       Size according to the number of bytes
  39      *_word     Size based on the target architecture's word
  40                 word size (32/64 bits)
  41
  42 */
  43
  44
  45 /* bit based */
  46 typedef char natural8;
  47 typedef short natural16;
  48 typedef long natural32;
  49 typedef long long natural64;
  50
  51 typedef signed char signed8;
  52 typedef signed short signed16;
  53 typedef signed long signed32;
  54 typedef signed long long signed64;
  55
  56 typedef unsigned char unsigned8;
  57 typedef unsigned short unsigned16;
  58 typedef unsigned long unsigned32;
  59 typedef unsigned long long unsigned64;
  60
  61
  62 /* byte based */
  63 typedef natural8 natural_1;
  64 typedef natural16 natural_2;
  65 typedef natural32 natural_4;
  66 typedef natural64 natural_8;
  67
  68 typedef signed8 signed_1;
  69 typedef signed16 signed_2;
  70 typedef signed32 signed_4;
  71 typedef signed64 signed_8;
  72
  73 typedef unsigned8 unsigned_1;
  74 typedef unsigned16 unsigned_2;
  75 typedef unsigned32 unsigned_4;
  76 typedef unsigned64 unsigned_8;
  77
  78
  79 /* for general work, the following are defined */
  80 /* unsigned: >= 32 bits */
  81 /* signed:   >= 32 bits */
  82 /* long:     >= 32 bits, sign undefined */
  83 /* int:      small indicator */
  84
  85 /* target architecture based */
  86 #if (WITH_64BIT_TARGET)
  87 typedef natural64 natural_word;
  88 typedef unsigned64 unsigned_word;
  89 typedef signed64 signed_word;
  90 #else
  91 typedef natural32 natural_word;
  92 typedef unsigned32 unsigned_word;
  93 typedef signed32 signed_word;
  94 #endif
  95
  96
  97 /* Other instructions */
  98 typedef unsigned32 instruction_word;
  99
 100 #endif /* _WORDS_H_ */