77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
- Implement VSX detection on FreeBSD
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--- aom_ports/ppc_cpudetect.c.orig 2018-06-25 14:54:59 UTC
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+++ aom_ports/ppc_cpudetect.c
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@@ -9,12 +9,6 @@
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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-#include <fcntl.h>
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-#include <unistd.h>
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-#include <stdint.h>
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-#include <asm/cputable.h>
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-#include <linux/auxvec.h>
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-
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#include "config/aom_config.h"
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#include "aom_ports/ppc.h"
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@@ -37,6 +31,13 @@ static int cpu_env_mask(void) {
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return env && *env ? (int)strtol(env, NULL, 0) : ~0;
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}
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+#if defined(__linux__)
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+#include <fcntl.h>
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+#include <unistd.h>
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+#include <stdint.h>
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+#include <asm/cputable.h>
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+#include <linux/auxvec.h>
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+
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int ppc_simd_caps(void) {
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int flags;
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int mask;
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@@ -75,6 +76,44 @@ out_close:
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close(fd);
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return flags & mask;
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}
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+#elif defined(__FreeBSD__)
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+#if __FreeBSD__ < 12
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+#include <sys/types.h>
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+#include <sys/sysctl.h>
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+#else
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+#include <sys/auxv.h>
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+#endif
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+#include <machine/cpu.h>
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+
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+int ppc_simd_caps(void) {
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+ int flags;
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+ int mask;
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+ u_long hwcap = 0;
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+
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+ // If AOM_SIMD_CAPS is set then allow only those capabilities.
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+ if (!cpu_env_flags(&flags)) {
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+ return flags;
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+ }
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+
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+ mask = cpu_env_mask();
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+
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+#if __FreeBSD__ < 12
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+ size_t sz = sizeof(hwcap);
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+ sysctlbyname("hw.cpu_features", &hwcap, &sz, NULL, 0);
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+#else
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+ elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap));
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+#endif
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+#if HAVE_VSX
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+ if (hwcap & PPC_FEATURE_HAS_VSX) flags |= HAS_VSX;
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+#endif
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+
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+ return flags & mask;
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+}
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+#else
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+#error \
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+ "--enable-runtime-cpu-detect selected, but no CPU detection method " \
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+"available for your platform. Reconfigure with --disable-runtime-cpu-detect."
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+#endif /* end __FreeBSD__ */
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#else
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// If there is no RTCD the function pointers are not used and can not be
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// changed.
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