X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fbsd-os.c;h=df486eb63ba2a34cbb6aa78405b872843f4f87f8;hb=d442c23da9851beac541b8bddfc2c0837cb87309;hp=884849255ca120f5e10ef8c4ecb2678171e49753;hpb=d63d80e637e9058ff5db7a10c267796ff7970ba1;p=sbcl.git

diff --git a/src/runtime/bsd-os.c b/src/runtime/bsd-os.c
index 8848492..df486eb 100644
--- a/src/runtime/bsd-os.c
+++ b/src/runtime/bsd-os.c
@@ -70,7 +70,11 @@ static void freebsd_init();
 #include <sys/types.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
+#include <sys/sysctl.h>
 #include <dlfcn.h>
+#ifdef LISP_FEATURE_X86
+#include <machine/cpu.h>
+#endif
 
 static void openbsd_init();
 #endif
@@ -481,9 +485,16 @@ os_get_runtime_executable_path()
 #endif
 
 #ifdef __OpenBSD__
+
+int openbsd_use_fxsave = 0;
+
 void
 openbsd_init()
 {
+#ifdef LISP_FEATURE_X86
+    int mib[2];
+    size_t size;
+#endif
     /*
      * Show a warning if it looks like the memory available after
      * allocating the spaces won't be at least this much.
@@ -495,6 +506,14 @@ openbsd_init()
 #endif
     struct rlimit rl;
 
+#ifdef LISP_FEATURE_X86
+    /* Save the machdep.osfxsr sysctl for use by os_restore_fp_control() */
+    mib[0] = CTL_MACHDEP;
+    mib[1] = CPU_OSFXSR;
+    size = sizeof (openbsd_use_fxsave);
+    sysctl(mib, 2, &openbsd_use_fxsave, &size, NULL, 0);
+#endif
+
     /* OpenBSD, like NetBSD, counts mmap()ed space against the
      * process's data size limit. If the soft limit is lower than the
      * hard limit then try to yank it up, this lets users in the