1 /* The common simulator framework for GDB, the GNU Debugger. 2 3 Copyright 2002-2020 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 29 30 #if !defined(_SWAP_1) 31 #define _SWAP_1(SET,RAW) SET (RAW) 32 #endif 33 34 #if !defined(_SWAP_2) && (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) && 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) && (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) && 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 #ifndef _SWAP_16 60 #define _SWAP_16(SET,RAW) \ 61 union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ 62 in.word = (RAW); \ 63 _SWAP_4 (out.words[0] =, in.words[3]); \ 64 _SWAP_4 (out.words[1] =, in.words[2]); \ 65 _SWAP_4 (out.words[2] =, in.words[1]); \ 66 _SWAP_4 (out.words[3] =, in.words[0]); \ 67 SET out.word; 68 #endif 69 70 71 #define N 1 72 #include "sim-n-endian.h" 73 #undef N 74 75 #define N 2 76 #include "sim-n-endian.h" 77 #undef N 78 79 #define N 4 80 #include "sim-n-endian.h" 81 #undef N 82 83 #define N 8 84 #include "sim-n-endian.h" 85 #undef N 86 87 #define N 16 88 #include "sim-n-endian.h" 89 #undef N 90 91 92 INLINE_SIM_ENDIAN\ 93 (unsigned_8) 94 sim_endian_split_16 (unsigned_16 word, int w) 95 { 96 if (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) 97 { 98 return word.a[1 - w]; 99 } 100 else 101 { 102 return word.a[w]; 103 } 104 } 105 106 107 INLINE_SIM_ENDIAN\ 108 (unsigned_16) 109 sim_endian_join_16 (unsigned_8 h, unsigned_8 l) 110 111 { 112 unsigned_16 word; 113 if (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) 114 { 115 word.a[0] = l; 116 word.a[1] = h; 117 } 118 else 119 { 120 word.a[0] = h; 121 word.a[1] = l; 122 } 123 return word; 124 } 125 126 127 128 #endif /* _SIM_ENDIAN_C_ */ 129