sim/common/sim-n-endian.h

   1 /* The common simulator framework for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney and Red Hat.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24
  25 #ifndef N
  26 #error "N must be #defined"
  27 #endif
  28
  29 #include "symcat.h"
  30
  31 /* NOTE: See end of file for #undef */
  32 #define unsigned_N XCONCAT2(unsigned_,N)
  33 #define endian_t2h_N XCONCAT2(endian_t2h_,N)
  34 #define endian_h2t_N XCONCAT2(endian_h2t_,N)
  35 #define _SWAP_N XCONCAT2(_SWAP_,N)
  36 #define swap_N XCONCAT2(swap_,N)
  37 #define endian_h2be_N XCONCAT2(endian_h2be_,N)
  38 #define endian_be2h_N XCONCAT2(endian_be2h_,N)
  39 #define endian_h2le_N XCONCAT2(endian_h2le_,N)
  40 #define endian_le2h_N XCONCAT2(endian_le2h_,N)
  41 #define offset_N XCONCAT2(offset_,N)
  42
  43 /* TAGS: endian_t2h_1 endian_t2h_2 endian_t2h_4 endian_t2h_8 endian_t2h_16 */
  44
  45 INLINE_SIM_ENDIAN\
  46 (unsigned_N)
  47 endian_t2h_N(unsigned_N raw_in)
  48 {
  49   if (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER) {
  50     return raw_in;
  51   }
  52   else {
  53     _SWAP_N(return,raw_in);
  54   }
  55 }
  56
  57 /* TAGS: endian_h2t_1 endian_h2t_2 endian_h2t_4 endian_h2t_8 endian_h2t_16 */
  58
  59 INLINE_SIM_ENDIAN\
  60 (unsigned_N)
  61 endian_h2t_N(unsigned_N raw_in)
  62 {
  63   if (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER) {
  64     return raw_in;
  65   }
  66   else {
  67     _SWAP_N(return,raw_in);
  68   }
  69 }
  70
  71 /* TAGS: swap_1 swap_2 swap_4 swap_8 swap_16 */
  72
  73 INLINE_SIM_ENDIAN\
  74 (unsigned_N)
  75 swap_N(unsigned_N raw_in)
  76 {
  77   _SWAP_N(return,raw_in);
  78 }
  79
  80 /* TAGS: endian_h2be_1 endian_h2be_2 endian_h2be_4 endian_h2be_8 endian_h2be_16 */
  81
  82 INLINE_SIM_ENDIAN\
  83 (unsigned_N)
  84 endian_h2be_N(unsigned_N raw_in)
  85 {
  86   if (CURRENT_HOST_BYTE_ORDER == BIG_ENDIAN) {
  87     return raw_in;
  88   }
  89   else {
  90     _SWAP_N(return,raw_in);
  91   }
  92 }
  93
  94 /* TAGS: endian_be2h_1 endian_be2h_2 endian_be2h_4 endian_be2h_8 endian_be2h_16 */
  95
  96 INLINE_SIM_ENDIAN\
  97 (unsigned_N)
  98 endian_be2h_N(unsigned_N raw_in)
  99 {
 100   if (CURRENT_HOST_BYTE_ORDER == BIG_ENDIAN) {
 101     return raw_in;
 102   }
 103   else {
 104     _SWAP_N(return,raw_in);
 105   }
 106 }
 107
 108 /* TAGS: endian_h2le_1 endian_h2le_2 endian_h2le_4 endian_h2le_8 endian_h2le_16 */
 109
 110 INLINE_SIM_ENDIAN\
 111 (unsigned_N)
 112 endian_h2le_N(unsigned_N raw_in)
 113 {
 114   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) {
 115     return raw_in;
 116   }
 117   else {
 118     _SWAP_N(return,raw_in);
 119   }
 120 }
 121
 122 /* TAGS: endian_le2h_1 endian_le2h_2 endian_le2h_4 endian_le2h_8 endian_le2h_16 */
 123
 124 INLINE_SIM_ENDIAN\
 125 (unsigned_N)
 126 endian_le2h_N(unsigned_N raw_in)
 127 {
 128   if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) {
 129     return raw_in;
 130   }
 131   else {
 132     _SWAP_N(return,raw_in);
 133   }
 134 }
 135
 136 /* TAGS: offset_1 offset_2 offset_4 offset_8 offset_16 */
 137
 138 INLINE_SIM_ENDIAN\
 139 (void*)
 140 offset_N (unsigned_N *x,
 141           unsigned sizeof_word,
 142           unsigned word)
 143 {
 144   char *in = (char*)x;
 145   char *out;
 146   unsigned offset = sizeof_word * word;
 147   ASSERT (offset + sizeof_word <= sizeof(unsigned_N));
 148   ASSERT (word < (sizeof (unsigned_N) / sizeof_word));
 149   ASSERT ((sizeof (unsigned_N) % sizeof_word) == 0);
 150   if (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN)
 151     {
 152       out = in + sizeof (unsigned_N) - offset - sizeof_word;
 153     }
 154   else
 155     {
 156       out = in + offset;
 157     }
 158   return out;
 159 }
 160
 161
 162 /* NOTE: See start of file for #define */
 163 #undef unsigned_N
 164 #undef endian_t2h_N
 165 #undef endian_h2t_N
 166 #undef _SWAP_N
 167 #undef swap_N
 168 #undef endian_h2be_N
 169 #undef endian_be2h_N
 170 #undef endian_h2le_N
 171 #undef endian_le2h_N
 172 #undef offset_N