ffmpeg | branch: master | Brad Smith <b...@comstyle.com> | Sat Jun 22 22:49:14 2024 -0400| [41190da9e11f536cb590df45ce9839974e5e6777] | committer: Brad Smith
aarch64: Add OpenBSD runtime detection of dotprod and i8mm using sysctl Signed-off-by: Brad Smith <b...@comstyle.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=41190da9e11f536cb590df45ce9839974e5e6777 --- libavutil/aarch64/cpu.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/libavutil/aarch64/cpu.c b/libavutil/aarch64/cpu.c index 196bdaf6b0..cfa9306663 100644 --- a/libavutil/aarch64/cpu.c +++ b/libavutil/aarch64/cpu.c @@ -65,6 +65,44 @@ static int detect_flags(void) return flags; } +#elif defined(__OpenBSD__) +#include <machine/armreg.h> +#include <machine/cpu.h> +#include <sys/types.h> +#include <sys/sysctl.h> + +static int detect_flags(void) +{ + int flags = 0; + +#ifdef CPU_ID_AA64ISAR0 + int mib[2]; + uint64_t isar0; + uint64_t isar1; + size_t len; + + mib[0] = CTL_MACHDEP; + mib[1] = CPU_ID_AA64ISAR0; + len = sizeof(isar0); + if (sysctl(mib, 2, &isar0, &len, NULL, 0) != -1) { + if (ID_AA64ISAR0_DP(isar0) >= ID_AA64ISAR0_DP_IMPL) + flags |= AV_CPU_FLAG_DOTPROD; + } + + mib[0] = CTL_MACHDEP; + mib[1] = CPU_ID_AA64ISAR1; + len = sizeof(isar1); + if (sysctl(mib, 2, &isar1, &len, NULL, 0) != -1) { +#ifdef ID_AA64ISAR1_I8MM_IMPL + if (ID_AA64ISAR1_I8MM(isar1) >= ID_AA64ISAR1_I8MM_IMPL) + flags |= AV_CPU_FLAG_I8MM; +#endif + } +#endif + + return flags; +} + #elif defined(_WIN32) #include <windows.h> _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
