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Diffstat (limited to 'cpu-all.h')
-rw-r--r--cpu-all.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/cpu-all.h b/cpu-all.h
index 3381125c8..d8891f835 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -624,8 +624,13 @@ static inline void stfq_be_p(void *ptr, float64 v)
/* On some host systems the guest address space is reserved on the host.
* This allows the guest address space to be offset to a convenient location.
*/
-//#define GUEST_BASE 0x20000000
-#define GUEST_BASE 0
+#if defined(CONFIG_USE_GUEST_BASE)
+extern unsigned long guest_base;
+extern int have_guest_base;
+#define GUEST_BASE guest_base
+#else
+#define GUEST_BASE 0ul
+#endif
/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
#define g2h(x) ((void *)((unsigned long)(x) + GUEST_BASE))