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https://github.com/dborth/snes9xgx.git
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22 lines
637 B
C
22 lines
637 B
C
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/****************************************************************************
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* gctime.h
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****************************************************************************/
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#define mftb(rval) ({unsigned long u; do { \
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asm volatile ("mftbu %0" : "=r" (u)); \
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asm volatile ("mftb %0" : "=r" ((rval)->l)); \
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asm volatile ("mftbu %0" : "=r" ((rval)->u)); \
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} while(u != ((rval)->u)); })
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typedef struct
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{
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unsigned long l, u;
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} tb_t;
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unsigned long tb_diff_msec(tb_t *end, tb_t *start);
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unsigned long tb_diff_usec(tb_t *end, tb_t *start);
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void udelay(unsigned int us);
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void mdelay(unsigned int ms);
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