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 3 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, see <http://www.gnu.org/licenses/>.
  17
  18     */
  19
  20
  21 #ifndef _SIM_ENDIAN_C_
  22 #define _SIM_ENDIAN_C_
  23
  24 /* This must come before any other includes.  */
  25 #include "defs.h"
  26
  27 #include "basics.h"
  28
  29
  30 #if !defined(_SWAP_1)
  31 #define _SWAP_1(SET,RAW) SET (RAW)
  32 #endif
  33
  34 #if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons)
  35 #define _SWAP_2(SET,RAW) SET htons (RAW)
  36 #endif
  37
  38 #ifndef _SWAP_2
  39 #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8))
  40 #endif
  41
  42 #if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl)
  43 #define _SWAP_4(SET,RAW) SET htonl (RAW)
  44 #endif
  45
  46 #ifndef _SWAP_4
  47 #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24))
  48 #endif
  49
  50 #ifndef _SWAP_8
  51 #define _SWAP_8(SET,RAW) \
  52   union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \
  53   in.dword = RAW; \
  54   _SWAP_4 (out.words[0] =, in.words[1]); \
  55   _SWAP_4 (out.words[1] =, in.words[0]); \
  56   SET out.dword;
  57 #endif
  58
  59 #define N 1
  60 #include "sim-endian-n.h"
  61 #undef N
  62
  63 #define N 2
  64 #include "sim-endian-n.h"
  65 #undef N
  66
  67 #define N 4
  68 #include "sim-endian-n.h"
  69 #undef N
  70
  71 #define N 8
  72 #include "sim-endian-n.h"
  73 #undef N
  74
  75 #endif /* _SIM_ENDIAN_C_ */