1 /* The common simulator framework for GDB, the GNU Debugger. 2 3 Copyright 2002-2023 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 "sim-basics.h" 30 #include "sim-assert.h" 31 32 33 #if !defined(_SWAP_1) 34 #define _SWAP_1(SET,RAW) SET (RAW) 35 #endif 36 37 #if !defined(_SWAP_2) && (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) && defined(htons) 38 #define _SWAP_2(SET,RAW) SET htons (RAW) 39 #endif 40 41 #ifndef _SWAP_2 42 #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8)) 43 #endif 44 45 #if !defined(_SWAP_4) && (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) && defined(htonl) 46 #define _SWAP_4(SET,RAW) SET htonl (RAW) 47 #endif 48 49 #ifndef _SWAP_4 50 #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24)) 51 #endif 52 53 #ifndef _SWAP_8 54 #define _SWAP_8(SET,RAW) \ 55 union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \ 56 in.dword = RAW; \ 57 _SWAP_4 (out.words[0] =, in.words[1]); \ 58 _SWAP_4 (out.words[1] =, in.words[0]); \ 59 SET out.dword; 60 #endif 61 62 #ifndef _SWAP_16 63 #define _SWAP_16(SET,RAW) \ 64 union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ 65 in.word = (RAW); \ 66 _SWAP_4 (out.words[0] =, in.words[3]); \ 67 _SWAP_4 (out.words[1] =, in.words[2]); \ 68 _SWAP_4 (out.words[2] =, in.words[1]); \ 69 _SWAP_4 (out.words[3] =, in.words[0]); \ 70 SET out.word; 71 #endif 72 73 74 #define N 1 75 #include "sim-n-endian.h" 76 #undef N 77 78 #define N 2 79 #include "sim-n-endian.h" 80 #undef N 81 82 #define N 4 83 #include "sim-n-endian.h" 84 #undef N 85 86 #define N 8 87 #include "sim-n-endian.h" 88 #undef N 89 90 #define N 16 91 #include "sim-n-endian.h" 92 #undef N 93 94 95 INLINE_SIM_ENDIAN\ 96 (unsigned_8) 97 sim_endian_split_16 (unsigned_16 word, int w) 98 { 99 if (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) 100 { 101 return word.a[1 - w]; 102 } 103 else 104 { 105 return word.a[w]; 106 } 107 } 108 109 110 INLINE_SIM_ENDIAN\ 111 (unsigned_16) 112 sim_endian_join_16 (unsigned_8 h, unsigned_8 l) 113 114 { 115 unsigned_16 word; 116 if (HOST_BYTE_ORDER == BFD_ENDIAN_LITTLE) 117 { 118 word.a[0] = l; 119 word.a[1] = h; 120 } 121 else 122 { 123 word.a[0] = h; 124 word.a[1] = l; 125 } 126 return word; 127 } 128 129 130 131 #endif /* _SIM_ENDIAN_C_ */ 132