1 /* The common simulator framework for GDB, the GNU Debugger. 2 3 Copyright 2002-2024 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 /* This must come before any other includes. */ 27 #include "defs.h" 28 29 #include "bfd.h" 30 31 #include "sim-basics.h" 32 #include "sim-assert.h" 33 34 35 #if !defined(_SWAP_1) 36 #define _SWAP_1(SET,RAW) SET (RAW) 37 #endif 38 39 #if !defined(_SWAP_2) && (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) && defined(htons) 40 #define _SWAP_2(SET,RAW) SET htons (RAW) 41 #endif 42 43 #ifndef _SWAP_2 44 #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8)) 45 #endif 46 47 #if !defined(_SWAP_4) && (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) && defined(htonl) 48 #define _SWAP_4(SET,RAW) SET htonl (RAW) 49 #endif 50 51 #ifndef _SWAP_4 52 #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24)) 53 #endif 54 55 #ifndef _SWAP_8 56 #define _SWAP_8(SET,RAW) \ 57 union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \ 58 in.dword = RAW; \ 59 _SWAP_4 (out.words[0] =, in.words[1]); \ 60 _SWAP_4 (out.words[1] =, in.words[0]); \ 61 SET out.dword; 62 #endif 63 64 #ifndef _SWAP_16 65 #define _SWAP_16(SET,RAW) \ 66 union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ 67 in.word = (RAW); \ 68 _SWAP_4 (out.words[0] =, in.words[3]); \ 69 _SWAP_4 (out.words[1] =, in.words[2]); \ 70 _SWAP_4 (out.words[2] =, in.words[1]); \ 71 _SWAP_4 (out.words[3] =, in.words[0]); \ 72 SET out.word; 73 #endif 74 75 76 #define N 1 77 #include "sim-n-endian.h" 78 #undef N 79 80 #define N 2 81 #include "sim-n-endian.h" 82 #undef N 83 84 #define N 4 85 #include "sim-n-endian.h" 86 #undef N 87 88 #define N 8 89 #include "sim-n-endian.h" 90 #undef N 91 92 #define N 16 93 #include "sim-n-endian.h" 94 #undef N 95 96 97 INLINE_SIM_ENDIAN\ 98 (unsigned_8) 99 sim_endian_split_16 (unsigned_16 word, int w) 100 { 101 if (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) 102 { 103 return word.a[1 - w]; 104 } 105 else 106 { 107 return word.a[w]; 108 } 109 } 110 111 112 INLINE_SIM_ENDIAN\ 113 (unsigned_16) 114 sim_endian_join_16 (unsigned_8 h, unsigned_8 l) 115 116 { 117 unsigned_16 word; 118 if (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) 119 { 120 word.a[0] = l; 121 word.a[1] = h; 122 } 123 else 124 { 125 word.a[0] = h; 126 word.a[1] = l; 127 } 128 return word; 129 } 130 131 132 133 #endif /* _SIM_ENDIAN_C_ */ 134