43 lines
1001 B
Plaintext
43 lines
1001 B
Plaintext
- Implement NEON runtime detection on FreeBSD 11.* armv6
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--- src/arm/cpu.c.orig 2018-12-11 14:14:56 UTC
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+++ src/arm/cpu.c
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@@ -68,7 +68,37 @@ static unsigned parse_proc_cpuinfo(const char *flag) {
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}
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#endif
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+#if defined(__FreeBSD__) && __FreeBSD__ < 12
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+#include <sys/param.h>
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+#include <sys/sysctl.h>
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+#include <elf.h>
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+#include <errno.h>
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+#include <unistd.h>
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+
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+#define HAVE_GETAUXVAL
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+#define NEON_HWCAP HWCAP_NEON
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+static unsigned long getauxval(unsigned long type) {
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+ Elf_Auxinfo auxv[AT_COUNT];
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+ size_t len = sizeof(auxv);
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+ int mib[] = {
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+ CTL_KERN,
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+ KERN_PROC,
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+ KERN_PROC_AUXV,
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+ getpid(),
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+ };
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+
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+ if (sysctl(mib, nitems(mib), auxv, &len, NULL, 0) != -1) {
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+ for (size_t i = 0; i < nitems(auxv); i++)
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+ if ((unsigned long)auxv[i].a_type == type)
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+ return auxv[i].a_un.a_val;
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+
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+ errno = ENOENT;
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+ }
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+ return 0;
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+}
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+#endif
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+
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unsigned dav1d_get_cpu_flags_arm(void) {
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unsigned flags = 0;
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#if ARCH_AARCH64
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flags |= DAV1D_ARM_CPU_FLAG_NEON;
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