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author | Marc Hoffman <mmhoffm@gmail.com> | 2007-06-13 11:09:07 +0000 |
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committer | Marc Hoffman <mmhoffm@gmail.com> | 2007-06-13 11:09:07 +0000 |
commit | f70c2739022ab338611ec034ad7504b3534b650c (patch) | |
tree | 2dcb138df7e1b56c014a0d7ac6faaeb360b92c44 /libavutil | |
parent | c9823f05778ca197681a6c9960590d66816ddcfe (diff) | |
download | ffmpeg-streaming-f70c2739022ab338611ec034ad7504b3534b650c.zip ffmpeg-streaming-f70c2739022ab338611ec034ad7504b3534b650c.tar.gz |
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
Diffstat (limited to 'libavutil')
-rw-r--r-- | libavutil/common.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/libavutil/common.h b/libavutil/common.h index 313658c..b9fd06d 100644 --- a/libavutil/common.h +++ b/libavutil/common.h @@ -267,7 +267,7 @@ static inline int ff_get_fourcc(const char *s){ }\ } -#if defined(ARCH_X86) || defined(ARCH_POWERPC) +#if defined(ARCH_X86) || defined(ARCH_POWERPC) || defined(ARCH_BFIN) #if defined(ARCH_X86_64) static inline uint64_t read_time(void) { @@ -286,6 +286,19 @@ static inline long long read_time(void) ); return l; } +#elif ARCH_BFIN +static inline uint64_t read_time(void) +{ + union { + struct { + unsigned lo; + unsigned hi; + } p; + unsigned long long c; + } t; + asm volatile ("%0=cycles; %1=cycles2;" : "=d" (t.p.lo), "=d" (t.p.hi)); + return t.c; +} #else //FIXME check ppc64 static inline uint64_t read_time(void) { |