3 files changed, 11 insertions, 3 deletions
diff --git a/mach/mach/mach_traps.h b/mach/mach/mach_traps.h
index 53ec21e..c778caa 100644
--- a/mach/mach/mach_traps.h
+++ b/mach/mach/mach_traps.h
@@ -41,9 +41,10 @@ extern mach_port_t __mach_thread_self (void);
 extern mach_port_t (mach_task_self) (void);
 extern mach_port_t (__mach_task_self) (void);
 
-/* Return the host information port for the host of the calling task.  */
-extern mach_port_t mach_host_self (void);
-extern mach_port_t __mach_host_self (void);
+/* Return the host information port for the host of the calling task.
+   The parens are needed to protect against the macro in <mach_init.h>.  */
+extern mach_port_t (mach_host_self) (void);
+extern mach_port_t (__mach_host_self) (void);
 
 /* Attempt to context switch the current thread off the processor.  Returns
    true if there are other threads that can be run and false if not.  */
diff --git a/mach/mach_init.c b/mach/mach_init.c
index cf8ac3b..8acb71f 100644
--- a/mach/mach_init.c
+++ b/mach/mach_init.c
@@ -20,6 +20,7 @@
 #include <unistd.h>
 
 mach_port_t __mach_task_self_;
+mach_port_t __mach_host_self_;
 vm_size_t __vm_page_size = 0;	/* Must be data not bss for weak alias.  */
 weak_alias (__vm_page_size, vm_page_size)
 
@@ -34,6 +35,7 @@ __mach_init (void)
   kern_return_t err;
 
   __mach_task_self_ = (__mach_task_self) ();
+  __mach_host_self_ = (__mach_host_self) ();
   __mig_init (0);
 
 #ifdef HAVE_HOST_PAGE_SIZE
diff --git a/mach/mach_init.h b/mach/mach_init.h
index 44a7ce2..26b2639 100644
--- a/mach/mach_init.h
+++ b/mach/mach_init.h
@@ -31,6 +31,11 @@ extern mach_port_t __mach_task_self_;
 #define __mach_task_self()	(__mach_task_self_ + 0)	/* Not an lvalue.  */
 #define mach_task_self()	(__mach_task_self ())
 
+/* This cache is initialized at startup.  */
+extern mach_port_t __mach_host_self_;
+#define __mach_host_self()	(__mach_host_self_ + 0)	/* Not an lvalue.  */
+#define mach_host_self()	(__mach_host_self ())
+
 /* Kernel page size.  */
 extern vm_size_t __vm_page_size;
 extern vm_size_t vm_page_size;