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progmem.h
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progmem.h
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/*
* Milkymist SoC (USB firmware)
* Copyright (C) 2007, 2008, 2009, 2010 Sebastien Bourdeauducq
*
* 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, version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __PROGMEM_H
#define __PROGMEM_H
#define PROGMEM __attribute__((__progmem__))
#define read_pgm_byte(addr) \
(__extension__({ \
unsigned int __addr16 = (unsigned int)(addr); \
unsigned char __result; \
__asm__( \
"lpm" "\n\t" \
"mov %0, r0" "\n\t" \
: "=r" (__result) \
: "z" (__addr16) \
: "r0" \
); \
__result; \
}))
#endif /* __PROGMEM_H */