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/*
stm32flash - Open Source ST STM32 flash program for *nix
Copyright (C) 2010 Geoffrey McRae <geoff@spacevs.com>
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdint.h>
#include "utils.h"
/* detect CPU endian */
char cpu_le() {
const uint32_t cpu_le_test = 0x12345678;
return ((const unsigned char*)&cpu_le_test)[0] == 0x78;
}
uint32_t be_u32(const uint32_t v) {
if (cpu_le())
return ((v & 0xFF000000) >> 24) |
((v & 0x00FF0000) >> 8) |
((v & 0x0000FF00) << 8) |
((v & 0x000000FF) << 24);
return v;
}
uint32_t le_u32(const uint32_t v) {
if (!cpu_le())
return ((v & 0xFF000000) >> 24) |
((v & 0x00FF0000) >> 8) |
((v & 0x0000FF00) << 8) |
((v & 0x000000FF) << 24);
return v;
}
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