sim/cr16/endian.c

   1 /* Simulation code for the CR16 processor.
   2    Copyright (C) 2008-2013 Free Software Foundation, Inc.
   3    Contributed by M Ranga Swami Reddy <MR.Swami.Reddy@nsc.com>
   4
   5    This file is part of GDB, the GNU debugger.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program. If not, see <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* If we're being compiled as a .c file, rather than being included in
  22    cr16_sim.h, then ENDIAN_INLINE won't be defined yet.  */
  23
  24 #ifndef ENDIAN_INLINE
  25 #define NO_ENDIAN_INLINE
  26 #include "cr16_sim.h"
  27 #define ENDIAN_INLINE
  28 #endif
  29
  30 ENDIAN_INLINE uint16
  31 get_word (x)
  32       uint8 *x;
  33 {
  34   return *(uint16 *)x;
  35 }
  36
  37 ENDIAN_INLINE uint32
  38 get_longword (x)
  39       uint8 *x;
  40 {
  41   return (((uint32) *(uint16 *)x) << 16) | ((uint32) *(uint16 *)(x+2));
  42 }
  43
  44 ENDIAN_INLINE int64
  45 get_longlong (x)
  46       uint8 *x;
  47 {
  48   uint32 top = get_longword (x);
  49   uint32 bottom = get_longword (x+4);
  50   return (((int64)top)<<32) | (int64)bottom;
  51 }
  52
  53 ENDIAN_INLINE void
  54 write_word (addr, data)
  55      uint8 *addr;
  56      uint16 data;
  57 {
  58   addr[1] = (data >> 8) & 0xff;
  59   addr[0] = data & 0xff;
  60
  61 }
  62
  63 ENDIAN_INLINE void
  64 write_longword (addr, data)
  65      uint8 *addr;
  66      uint32 data;
  67 {
  68   *(uint16 *)(addr + 2) = (uint16)(data >> 16);
  69   *(uint16 *)(addr) = (uint16)data;
  70 }
  71
  72 ENDIAN_INLINE void
  73 write_longlong (addr, data)
  74      uint8 *addr;
  75      int64 data;
  76 {
  77   write_longword (addr+4, (uint32)(data >> 32));
  78   write_longword (addr, (uint32)data);
  79 }