sim/ppc/sim-endian.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #ifndef _SIM_ENDIAN_C_
  23 #define _SIM_ENDIAN_C_
  24
  25 #include "config.h"
  26 #include "basics.h"
  27
  28
  29 #if !defined(_SWAP_1)
  30 #define _SWAP_1(SET,RAW) SET (RAW)
  31 #endif
  32
  33 #if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons)
  34 #define _SWAP_2(SET,RAW) SET htons (RAW)
  35 #endif
  36
  37 #ifndef _SWAP_2
  38 #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8))
  39 #endif
  40
  41 #if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl)
  42 #define _SWAP_4(SET,RAW) SET htonl (RAW)
  43 #endif
  44
  45 #ifndef _SWAP_4
  46 #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24))
  47 #endif
  48
  49 #ifndef _SWAP_8
  50 #define _SWAP_8(SET,RAW) \
  51   union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \
  52   in.dword = RAW; \
  53   _SWAP_4 (out.words[0] =, in.words[1]); \
  54   _SWAP_4 (out.words[1] =, in.words[0]); \
  55   SET out.dword;
  56 #endif
  57
  58 #define N 1
  59 #include "sim-endian-n.h"
  60 #undef N
  61
  62 #define N 2
  63 #include "sim-endian-n.h"
  64 #undef N
  65
  66 #define N 4
  67 #include "sim-endian-n.h"
  68 #undef N
  69
  70 #define N 8
  71 #include "sim-endian-n.h"
  72 #undef N
  73
  74 #endif /* _SIM_ENDIAN_C_ */