Genesis-Plus-GX/core/macros.h

71 lines
2.5 KiB
C

#ifndef _MACROS_H_
#define _MACROS_H_
#ifdef LSB_FIRST
#define READ_BYTE(BASE, ADDR) (BASE)[(ADDR)^1]
#define READ_WORD(BASE, ADDR) (((BASE)[ADDR]<<8) | (BASE)[(ADDR)+1])
#define READ_WORD_LONG(BASE, ADDR) (((BASE)[(ADDR)+1]<<24) | \
((BASE)[(ADDR)]<<16) | \
((BASE)[(ADDR)+3]<<8) | \
(BASE)[(ADDR)+2])
#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[(ADDR)^1] = (VAL)&0xff
#define WRITE_WORD(BASE, ADDR, VAL) (BASE)[ADDR] = ((VAL)>>8) & 0xff; \
(BASE)[(ADDR)+1] = (VAL)&0xff
#define WRITE_WORD_LONG(BASE, ADDR, VAL) (BASE)[(ADDR+1)] = ((VAL)>>24) & 0xff; \
(BASE)[(ADDR)] = ((VAL)>>16)&0xff; \
(BASE)[(ADDR+3)] = ((VAL)>>8)&0xff; \
(BASE)[(ADDR+2)] = (VAL)&0xff
#else
#define READ_BYTE(BASE, ADDR) (BASE)[ADDR]
#define READ_WORD(BASE, ADDR) *(uint16 *)((BASE) + (ADDR))
#define READ_WORD_LONG(BASE, ADDR) *(uint32 *)((BASE) + (ADDR))
#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[ADDR] = VAL & 0xff
#define WRITE_WORD(BASE, ADDR, VAL) *(uint16 *)((BASE) + (ADDR)) = VAL & 0xffff
#define WRITE_WORD_LONG(BASE, ADDR, VAL) *(uint32 *)((BASE) + (ADDR)) = VAL & 0xffffffff
#endif
/* C89 compatibility */
#ifndef M_PI
#define M_PI 3.14159265358979323846264338327f
#endif /* M_PI */
/* Set to your compiler's static inline keyword to enable it, or
* set it to blank to disable it.
* If you define INLINE in makefile or osd.h, it will override this value.
* NOTE: not enabling inline functions will SEVERELY slow down emulation.
*/
#ifndef INLINE
#define INLINE static __inline__
#endif /* INLINE */
/* Alignment macros for cross compiler compatibility */
#if defined(_MSC_VER)
#define ALIGNED_(x) __declspec(align(x))
#elif defined(__GNUC__)
#define ALIGNED_(x) __attribute__ ((aligned(x)))
#endif
/* Default CD image file access (read-only) functions */
/* If you need to override default stdio.h functions with custom filesystem API,
redefine following macros in platform specific include file (osd.h) or Makefile
*/
#ifndef cdStream
#define cdStream FILE
#define cdStreamOpen(fname) fopen(fname, "rb")
#define cdStreamClose fclose
#define cdStreamRead fread
#define cdStreamSeek fseek
#define cdStreamTell ftell
#define cdStreamGets fgets
#endif
#endif /* _MACROS_H_ */