ref: 48a9da08807277e3e78cdbffff0da0a2fc7384da
parent: 92e4080c9170e34d4e349bc78e47e5d8b61f8c52
author: Timothy B. Terriberry <tterribe@xiph.org>
date: Sun Mar 10 06:28:58 EDT 2024
Add Arm RTCD for FreeBSD. Thanks to Robert Clausecker <fuz@FreeBSD.org> for the patch.
--- a/celt/arm/armcpu.c
+++ b/celt/arm/armcpu.c
@@ -191,6 +191,54 @@
return flags;
}
+#elif defined(__FreeBSD__)
+#include <sys/auxv.h>
+
+static opus_uint32 opus_cpu_capabilities(void)
+{+ long hwcap = 0;
+ opus_uint32 flags = 0;
+
+# if defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ /* FreeBSD requires armv6+, which always supports media instructions */
+ flags |= OPUS_CPU_ARM_MEDIA_FLAG;
+# endif
+
+ elf_aux_info(AT_HWCAP, &hwcap, sizeof hwcap);
+
+# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+# ifdef HWCAP_EDSP
+ if (hwcap & HWCAP_EDSP)
+ flags |= OPUS_CPU_ARM_EDSP_FLAG;
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+# ifdef HWCAP_NEON
+ if (hwcap & HWCAP_NEON)
+ flags |= OPUS_CPU_ARM_NEON_FLAG;
+# elif defined(HWCAP_ASIMD)
+ if (hwcap & HWCAP_ASIMD)
+ flags |= OPUS_CPU_ARM_NEON_FLAG | OPUS_CPU_ARM_MEDIA_FLAG | OPUS_CPU_ARM_EDSP_FLAG;
+# endif
+# endif
+# if defined(OPUS_ARM_MAY_HAVE_DOTPROD) && defined(HWCAP_ASIMDDP)
+ if (hwcap & HWCAP_ASIMDDP)
+ flags |= OPUS_CPU_ARM_DOTPROD_FLAG;
+# endif
+# endif
+
+#if defined(OPUS_ARM_PRESUME_AARCH64_NEON_INTR)
+ flags |= OPUS_CPU_ARM_EDSP_FLAG | OPUS_CPU_ARM_MEDIA_FLAG | OPUS_CPU_ARM_NEON_FLAG;
+# if defined(OPUS_ARM_PRESUME_DOTPROD)
+ flags |= OPUS_CPU_ARM_DOTPROD_FLAG;
+# endif
+#endif
+
+ return (flags);
+}
+
#else
/* The feature registers which can tell us what the processor supports are
* accessible in priveleged modes only, so we can't have a general user-space
--
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