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Blackfin - read_time primitive
note this primitive currently uses a union to concatenate 2x32bit registers because of poor compiler support around DImode and asm. Originally committed as revision 9302 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -267,7 +267,7 @@ static inline int ff_get_fourcc(const char *s){
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}\
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}
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#if defined(ARCH_X86) || defined(ARCH_POWERPC)
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#if defined(ARCH_X86) || defined(ARCH_POWERPC) || defined(ARCH_BFIN)
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#if defined(ARCH_X86_64)
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static inline uint64_t read_time(void)
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{
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@ -286,6 +286,19 @@ static inline long long read_time(void)
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);
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return l;
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}
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#elif ARCH_BFIN
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static inline uint64_t read_time(void)
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{
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union {
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struct {
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unsigned lo;
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unsigned hi;
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} p;
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unsigned long long c;
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} t;
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asm volatile ("%0=cycles; %1=cycles2;" : "=d" (t.p.lo), "=d" (t.p.hi));
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return t.c;
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}
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#else //FIXME check ppc64
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static inline uint64_t read_time(void)
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{
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