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https://github.com/ekeeke/Genesis-Plus-GX.git
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50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
#ifndef _MACROS_H_
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#define _MACROS_H_
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#ifdef LSB_FIRST
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#define READ_BYTE(BASE, ADDR) (BASE)[(ADDR)^1]
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#define READ_WORD(BASE, ADDR) (((BASE)[ADDR]<<8) | (BASE)[(ADDR)+1])
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#define READ_WORD_LONG(BASE, ADDR) (((BASE)[(ADDR)+1]<<24) | \
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((BASE)[(ADDR)]<<16) | \
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((BASE)[(ADDR)+3]<<8) | \
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(BASE)[(ADDR)+2])
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#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[(ADDR)^1] = (VAL)&0xff
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#define WRITE_WORD(BASE, ADDR, VAL) (BASE)[ADDR] = ((VAL)>>8) & 0xff; \
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(BASE)[(ADDR)+1] = (VAL)&0xff
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#define WRITE_WORD_LONG(BASE, ADDR, VAL) (BASE)[(ADDR+1)] = ((VAL)>>24) & 0xff; \
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(BASE)[(ADDR)] = ((VAL)>>16)&0xff; \
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(BASE)[(ADDR+3)] = ((VAL)>>8)&0xff; \
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(BASE)[(ADDR+2)] = (VAL)&0xff
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#else
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#define READ_BYTE(BASE, ADDR) (BASE)[ADDR]
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#define READ_WORD(BASE, ADDR) *(uint16 *)((BASE) + (ADDR))
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#define READ_WORD_LONG(BASE, ADDR) *(uint32 *)((BASE) + (ADDR))
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#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[ADDR] = VAL & 0xff
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#define WRITE_WORD(BASE, ADDR, VAL) *(uint16 *)((BASE) + (ADDR)) = VAL & 0xffff
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#define WRITE_WORD_LONG(BASE, ADDR, VAL) *(uint32 *)((BASE) + (ADDR)) = VAL & 0xffffffff
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#endif
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/* C89 compatibility */
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#ifndef M_PI
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#define M_PI 3.14159265358979323846264338327f
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#endif /* M_PI */
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/* Set to your compiler's static inline keyword to enable it, or
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* set it to blank to disable it.
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* If you define INLINE in the makefile, it will override this value.
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* NOTE: not enabling inline functions will SEVERELY slow down emulation.
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*/
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#ifndef INLINE
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#define INLINE static __inline__
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#endif /* INLINE */
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#endif /* _MACROS_H_ */
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