1 /* The common simulator framework for GDB, the GNU Debugger. 2 3 Copyright 2002-2014 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 3 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, see <http://www.gnu.org/licenses/>. */ 21 22 23 #ifndef _SIM_ENDIAN_C_ 24 #define _SIM_ENDIAN_C_ 25 26 #include "sim-basics.h" 27 #include "sim-assert.h" 28 #include "sim-io.h" 29 30 31 #if !defined(_SWAP_1) 32 #define _SWAP_1(SET,RAW) SET (RAW) 33 #endif 34 35 #if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons) 36 #define _SWAP_2(SET,RAW) SET htons (RAW) 37 #endif 38 39 #ifndef _SWAP_2 40 #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8)) 41 #endif 42 43 #if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl) 44 #define _SWAP_4(SET,RAW) SET htonl (RAW) 45 #endif 46 47 #ifndef _SWAP_4 48 #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24)) 49 #endif 50 51 #ifndef _SWAP_8 52 #define _SWAP_8(SET,RAW) \ 53 union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \ 54 in.dword = RAW; \ 55 _SWAP_4 (out.words[0] =, in.words[1]); \ 56 _SWAP_4 (out.words[1] =, in.words[0]); \ 57 SET out.dword; 58 #endif 59 60 #ifndef _SWAP_16 61 #define _SWAP_16(SET,RAW) \ 62 union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ 63 in.word = (RAW); \ 64 _SWAP_4 (out.words[0] =, in.words[3]); \ 65 _SWAP_4 (out.words[1] =, in.words[2]); \ 66 _SWAP_4 (out.words[2] =, in.words[1]); \ 67 _SWAP_4 (out.words[3] =, in.words[0]); \ 68 SET out.word; 69 #endif 70 71 72 #define N 1 73 #include "sim-n-endian.h" 74 #undef N 75 76 #define N 2 77 #include "sim-n-endian.h" 78 #undef N 79 80 #define N 4 81 #include "sim-n-endian.h" 82 #undef N 83 84 #define N 8 85 #include "sim-n-endian.h" 86 #undef N 87 88 #define N 16 89 #include "sim-n-endian.h" 90 #undef N 91 92 93 INLINE_SIM_ENDIAN\ 94 (unsigned_8) 95 sim_endian_split_16 (unsigned_16 word, int w) 96 { 97 if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) 98 { 99 return word.a[1 - w]; 100 } 101 else 102 { 103 return word.a[w]; 104 } 105 } 106 107 108 INLINE_SIM_ENDIAN\ 109 (unsigned_16) 110 sim_endian_join_16 (unsigned_8 h, unsigned_8 l) 111 112 { 113 unsigned_16 word; 114 if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) 115 { 116 word.a[0] = l; 117 word.a[1] = h; 118 } 119 else 120 { 121 word.a[0] = h; 122 word.a[1] = l; 123 } 124 return word; 125 } 126 127 128 129 #endif /* _SIM_ENDIAN_C_ */ 130