From 65aa3a08ed4cf3de8c12933ff101575e3682c015 Mon Sep 17 00:00:00 2001
From: David Schleef <ds@schleef.org>
Date: Mon, 28 Jun 2010 13:09:32 -0700
Subject: [PATCH] Add support for OpenBSD in CPU detection

From Brad <brad@comstyle.com>.
---
 orc/orccpu-powerpc.c | 32 ++++++++++++++++++++++++++++++--
 orc/orccpu-x86.c     |  6 ++----
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/orc/orccpu-powerpc.c b/orc/orccpu-powerpc.c
index 8430055..93c9910 100644
--- a/orc/orccpu-powerpc.c
+++ b/orc/orccpu-powerpc.c
@@ -50,6 +50,11 @@
 #include <sys/sysctl.h>
 #endif
 
+#if defined(__OpenBSD__)
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <machine/cpu.h>
+#endif
 
 /***** powerpc *****/
 
@@ -63,7 +68,7 @@ orc_profile_stamp_tb(void)
 }
 #endif
 
-#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__APPLE__) && !defined(__linux__)
+#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__linux__)
 static void
 test_altivec (void * ignored)
 {
@@ -95,6 +100,27 @@ orc_check_altivec_sysctl_bsd (void)
 }
 #endif
 
+#if defined(__OpenBSD__)
+static unsigned long
+orc_check_altivec_sysctl_openbsd (void)
+{
+  unsigned long cpu_flags = 0;
+  int mib[2], ret, vu;
+  size_t len;
+
+  mib[0] = CTL_MACHDEP;
+  mib[1] = CPU_ALTIVEC;
+
+  len = sizeof(vu);
+  ret = sysctl(mib, 2, &vu, &len, NULL, 0);
+  if (!ret && vu) {
+    cpu_flags |= ORC_TARGET_ALTIVEC_ALTIVEC;
+  }
+
+  return cpu_flags;
+}
+#endif
+
 #if defined(__linux__)
 static unsigned long
 orc_check_altivec_proc_auxv (void)
@@ -148,7 +174,7 @@ out:
 }
 #endif
 
-#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__APPLE__) && !defined(__linux__)
+#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__linux__)
 static void
 orc_check_altivec_fault (void)
 {
@@ -166,6 +192,8 @@ orc_cpu_detect_arch(void)
 {
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__)
   orc_check_altivec_sysctl_bsd();
+#elif defined(__OpenBSD__)
+  orc_check_altivec_sysctl_openbsd();
 #elif defined(__linux__)
   orc_check_altivec_proc_auxv();
 #else
diff --git a/orc/orccpu-x86.c b/orc/orccpu-x86.c
index 6af66f4..072156c 100644
--- a/orc/orccpu-x86.c
+++ b/orc/orccpu-x86.c
@@ -453,10 +453,8 @@ orc_cpu_detect_kernel_support (void)
    * unmasked SSE FPU exception bug.  Other than that, if /proc/cpuinfo
    * reported SSE, then it's safe.
    */
-#elif defined(__sun)
-  /* Solaris is OK */
-#elif defined(__NetBSD__)
-  /* NetBSD is OK */
+#elif defined(__sun) || defined(__NetBSD__) || defined(__OpenBSD__)
+  /* Solaris/NetBSD/OpenBSD are OK */
 #else
    
   ORC_WARNING("Operating system is not known to support SSE.  "
-- 
2.7.4