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[/] [or1k/] [tags/] [start/] [gdb-5.0/] [sim/] [common/] [sim-endian.c] - Rev 579
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/* This file is part of the program psim. Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _SIM_ENDIAN_C_ #define _SIM_ENDIAN_C_ #include "sim-basics.h" #include "sim-assert.h" #include "sim-io.h" #if !defined(_SWAP_1) #define _SWAP_1(SET,RAW) SET (RAW) #endif #if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons) #define _SWAP_2(SET,RAW) SET htons (RAW) #endif #ifndef _SWAP_2 #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8)) #endif #if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl) #define _SWAP_4(SET,RAW) SET htonl (RAW) #endif #ifndef _SWAP_4 #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24)) #endif #ifndef _SWAP_8 #define _SWAP_8(SET,RAW) \ union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \ in.dword = RAW; \ _SWAP_4 (out.words[0] =, in.words[1]); \ _SWAP_4 (out.words[1] =, in.words[0]); \ SET out.dword; #endif #ifndef _SWAP_16 #define _SWAP_16(SET,RAW) \ union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ in.word = (RAW); \ _SWAP_4 (out.words[0] =, in.words[3]); \ _SWAP_4 (out.words[1] =, in.words[2]); \ _SWAP_4 (out.words[2] =, in.words[1]); \ _SWAP_4 (out.words[3] =, in.words[0]); \ SET out.word; #endif #define N 1 #include "sim-n-endian.h" #undef N #define N 2 #include "sim-n-endian.h" #undef N #define N 4 #include "sim-n-endian.h" #undef N #define N 8 #include "sim-n-endian.h" #undef N #define N 16 #include "sim-n-endian.h" #undef N INLINE_SIM_ENDIAN\ (unsigned_8) sim_endian_split_16 (unsigned_16 word, int w) { if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) { return word.a[1 - w]; } else { return word.a[w]; } } INLINE_SIM_ENDIAN\ (unsigned_16) sim_endian_join_16 (unsigned_8 h, unsigned_8 l) { unsigned_16 word; if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) { word.a[0] = l; word.a[1] = h; } else { word.a[0] = h; word.a[1] = l; } return word; } #endif /* _SIM_ENDIAN_C_ */
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