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| author | Brad Smith <brad@comstyle.com> | 2024-06-22 22:49:14 -0400 |
|---|---|---|
| committer | Brad Smith <brad@comstyle.com> | 2024-06-26 02:06:53 -0400 |
| commit | 41190da9e11f536cb590df45ce9839974e5e6777 (patch) | |
| tree | d20ee206463bdf26ead10deb0e9df1a9a2362c01 | |
| parent | 23531c97768f79d55d369e3dd1e4b52acd72f6ec (diff) | |
| download | ffmpeg-41190da9e11f536cb590df45ce9839974e5e6777.tar.gz | |
aarch64: Add OpenBSD runtime detection of dotprod and i8mm using sysctl
Signed-off-by: Brad Smith <brad@comstyle.com>
| -rw-r--r-- | libavutil/aarch64/cpu.c | 38 |
1 files changed, 38 insertions, 0 deletions
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> |