Changeset 47114 in vbox for trunk/src/VBox/Main/src-server

Timestamp:

Jul 12, 2013 11:26:34 AM (11 years ago)

Author:

vboxsync

Message:

On 32-bit darwin we must use the sysctl hw.cpu64bit_capable to figure whether we can do 64-bit.

File:

• trunk/src/VBox/Main/src-server/HostImpl.cpp (modified) (2 diffs)

trunk/src/VBox/Main/src-server/HostImpl.cpp

@@ -54 +54 @@
 # include <VBox/VBoxNetCfg-win.h>
 #endif /* #if defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT) */
+
+#if defined(RT_OS_DARWIN) && ARCH_BITS == 32
+# include <sys/types.h>
+# include <sys/sysctl.h>
+#endif
 
 #ifdef RT_OS_LINUX
@@ -353 +358 @@
             m->fLongModeSupported = ASMIsValidExtRange(uExtMaxId)
                                  && (fExtFeaturesEdx & X86_CPUID_EXT_FEATURE_EDX_LONG_MODE);
+
+#if defined(RT_OS_DARWIN) && ARCH_BITS == 32 /* darwin.x86 has some optimizations of 64-bit on 32-bit. */
+            int     f64bitCapable = 0;
+            size_t  cbParameter   = sizeof(f64bitCapable);
+            if (sysctlbyname("hw.cpu64bit_capable", &f64bitCapable, &cbParameter, NULL, NULL) != -1)
+                m->fLongModeSupported = f64bitCapable != 0;
+#endif
 
             /* VT-x? */