--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/src/liboilcpu-powerpc.c	Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,191 @@
+/*
+ * LIBOIL - Library of Optimized Inner Loops
+ * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <liboil/liboilfunction.h>
+#include <liboil/liboildebug.h>
+#include <liboil/liboilcpu.h>
+#include <liboil/liboilfault.h>
+#include <liboil/liboilutils.h>
+
+#if defined(__linux__)
+#include <linux/auxvec.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#ifndef PPC_FEATURE_HAS_ALTIVEC
+/* From linux-2.6/include/asm-powerpc/cputable.h */
+#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
+#endif
+
+#endif
+
+#if defined(__APPLE__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
+#if defined(__FreeBSD__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
+
+/***** powerpc *****/
+
+static unsigned long
+oil_profile_stamp_tb(void)
+{
+  unsigned long ts;
+  __asm__ __volatile__("mftb %0\n" : "=r" (ts));
+  return ts;
+}
+
+#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__APPLE__) && !defined(__linux__)
+static void
+test_altivec (void * ignored)
+{
+  asm volatile ("vor v0, v0, v0\n");
+}
+#endif
+
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+static void
+oil_check_altivec_sysctl_freebsd (void)
+{
+  int ret, av;
+  size_t len;
+
+  len = sizeof(av);
+  ret = sysctlbyname("hw.altivec", &av, &len, NULL, 0);
+  if (!ret && av) {
+    oil_cpu_flags |= OIL_IMPL_FLAG_ALTIVEC;
+  }
+}
+#endif
+
+#if defined(__APPLE__)
+static void
+oil_check_altivec_sysctl_darwin (void)
+{
+  int ret, vu;
+  size_t len;
+
+  len = sizeof(vu);
+  ret = sysctlbyname("hw.vectorunit", &vu, &len, NULL, 0);
+  if (!ret && vu) {
+    oil_cpu_flags |= OIL_IMPL_FLAG_ALTIVEC;
+  }
+}
+#endif
+
+#if defined(__linux__)
+static void
+oil_check_altivec_proc_auxv (void)
+{
+  static int available = -1;
+  int new_avail = 0;
+  unsigned long buf[64];
+  ssize_t count;
+  int fd, i;
+
+  /* Flags already set */
+  if (available != -1) {
+    return;
+  }
+
+  fd = open("/proc/self/auxv", O_RDONLY);
+  if (fd < 0) {
+    goto out;
+  }
+
+more:
+  count = read(fd, buf, sizeof(buf));
+  if (count < 0) {
+    goto out_close;
+  }
+
+  for (i=0; i < (count / sizeof(unsigned long)); i += 2) {
+    if (buf[i] == AT_HWCAP) {
+      new_avail = !!(buf[i+1] & PPC_FEATURE_HAS_ALTIVEC);
+      goto out_close;
+    } else if (buf[i] == AT_NULL) {
+      goto out_close;
+    }
+  }
+
+  if (count == sizeof(buf)) {
+    goto more;
+  }
+
+out_close:
+  close(fd);
+
+out:
+  available = new_avail;
+  if (available) {
+    oil_cpu_flags |= OIL_IMPL_FLAG_ALTIVEC;
+  }
+}
+#endif
+
+#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__APPLE__) && !defined(__linux__)
+static void
+oil_check_altivec_fault (void)
+{
+  oil_fault_check_enable ();
+  if (oil_fault_check_try(test_altivec, NULL)) {
+    OIL_DEBUG ("cpu flag altivec");
+    oil_cpu_flags |= OIL_IMPL_FLAG_ALTIVEC;
+  }
+  oil_fault_check_disable ();
+}
+#endif
+
+void
+oil_cpu_detect_arch(void)
+{
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+  oil_check_altivec_sysctl_freebsd();
+#elif defined(__APPLE__)
+  oil_check_altivec_sysctl_darwin();
+#elif defined(__linux__)
+  oil_check_altivec_proc_auxv();
+#else
+  oil_check_altivec_fault();
+#endif
+
+  _oil_profile_stamp = oil_profile_stamp_tb;
+}
+
+
+