newlib-cygwin/newlib/libc/machine/microblaze/mb_endian.h

16 lines
581 B
C

#ifndef _MB_ENDIAN_H
#define _MB_ENDIAN_H
/* Convenience macros for loading and store 4 bytes in a byte invariant way with
* a singe instruction. Endianess affects this and we rely on MicroBlaze
* load/store reverse instructions to do the trick on little-endian systems.
*/
#ifdef __LITTLE_ENDIAN__
#define LOAD4BYTES(rD,rA,rB) "\tlwr\t" rD ", " rA ", " rB "\n"
#define STORE4BYTES(rD,rA,rB) "\tswr\t" rD ", " rA ", " rB "\n"
#else
#define LOAD4BYTES(rD,rA,rB) "\tlw\t" rD ", " rA ", " rB "\n"
#define STORE4BYTES(rD,rA,rB) "\tsw\t" rD ", " rA ", " rB "\n"
#endif
#endif