mirror of https://github.com/vivier/EMILE.git
72 lines
1.4 KiB
C
72 lines
1.4 KiB
C
/*
|
|
*
|
|
* (c) 2004,2005 Laurent Vivier <Laurent@Vivier.EU>
|
|
*
|
|
*/
|
|
|
|
#ifndef _EMILE_H
|
|
#define _EMILE_H
|
|
static __attribute__((used)) char* emile_header = "$CVSHeader: $";
|
|
#include <endian.h>
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
|
|
/* nothing to do, because m68k is big endian too */
|
|
|
|
static inline u_int16_t read_short(u_int16_t* addr)
|
|
{
|
|
return *addr;
|
|
}
|
|
|
|
static inline void write_short(u_int16_t* addr, u_int16_t value)
|
|
{
|
|
*addr = value;
|
|
}
|
|
|
|
static inline u_int32_t read_long(u_int32_t* addr)
|
|
{
|
|
return *addr;
|
|
}
|
|
|
|
static inline void write_long(u_int32_t* addr, u_int32_t value)
|
|
{
|
|
*addr = value;
|
|
}
|
|
|
|
#else /* __BYTE_ORDER == __LITTLE_ENDIAN */
|
|
|
|
/* little endian (or unknown), read byte by byte to get it in good order */
|
|
|
|
static inline u_int16_t read_short(u_int16_t* addr)
|
|
{
|
|
unsigned char* baddr = (unsigned char*)addr;
|
|
|
|
return ((u_int16_t)(*baddr) << 8) | (u_int16_t)*(baddr+1);
|
|
}
|
|
|
|
static inline void write_short(u_int16_t* addr, u_int16_t value)
|
|
{
|
|
unsigned char* baddr = (unsigned char*)addr;
|
|
|
|
*baddr = (unsigned char)(value>>8);
|
|
*(baddr+1) = (unsigned char)value;
|
|
}
|
|
|
|
static inline u_int32_t read_long(u_int32_t* addr)
|
|
{
|
|
u_int16_t* saddr = (u_int16_t*)addr;
|
|
|
|
return ((u_int32_t)read_short(saddr) << 16) |
|
|
(u_int32_t)read_short(saddr+1);;
|
|
}
|
|
|
|
static inline void write_long(u_int32_t* addr, u_int32_t value)
|
|
{
|
|
u_int16_t* saddr = (u_int16_t*)addr;
|
|
|
|
write_short(saddr, (u_int16_t)(value>>16));
|
|
write_short(saddr+1, (u_int16_t)value);
|
|
}
|
|
#endif
|
|
#endif
|