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--- vpx_ports/arm_cpudetect.c.orig 2017-01-12 20:27:27 UTC
+++ vpx_ports/arm_cpudetect.c
@@ -38,7 +38,7 @@ static int arm_cpu_env_mask(void) {
return env && *env ? (int)strtol(env, NULL, 0) : ~0;
}
-#if !CONFIG_RUNTIME_CPU_DETECT
+#if !CONFIG_RUNTIME_CPU_DETECT || defined(__ARM_NEON)
int arm_cpu_caps(void) {
/* This function should actually be a no-op. There is no way to adjust any of
@@ -147,7 +147,57 @@ int arm_cpu_caps(void) {
}
return flags & mask;
}
-#else /* end __linux__ */
+#elif defined(__FreeBSD__)
+
+#if __FreeBSD__ < 12
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <elf.h>
+#include <errno.h>
+#include <unistd.h>
+
+static unsigned long getauxval(unsigned long type) {
+ Elf_Auxinfo auxv[AT_COUNT];
+ size_t len = sizeof(auxv);
+ int mib[] = {
+ CTL_KERN,
+ KERN_PROC,
+ KERN_PROC_AUXV,
+ getpid(),
+ };
+
+ if (sysctl(mib, nitems(mib), auxv, &len, NULL, 0) != -1) {
+ for (size_t i = 0; i < nitems(auxv); i++)
+ if ((unsigned long)auxv[i].a_type == type)
+ return auxv[i].a_un.a_val;
+
+ errno = ENOENT;
+ }
+ return 0;
+}
+#else
+#include <sys/auxv.h>
+#endif
+
+int arm_cpu_caps(void) {
+ int flags;
+ int mask;
+ u_long hwcap = 0;
+ if (!arm_cpu_env_flags(&flags)) {
+ return flags;
+ }
+ mask = arm_cpu_env_mask();
+#if __FreeBSD__ < 12
+ hwcap = getauxval(AT_HWCAP);
+#else
+ elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap));
+#endif
+#if HAVE_NEON || HAVE_NEON_ASM
+ if (hwcap & HWCAP_NEON) flags |= HAS_NEON;
+#endif
+ return flags & mask;
+}
+#else /* end __FreeBSD__ */
#error \
"--enable-runtime-cpu-detect selected, but no CPU detection method " \
"available for your platform. Reconfigure with --disable-runtime-cpu-detect."
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