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authorPaul Brook <paul@codesourcery.com>2009-07-17 12:48:08 +0100
committerPaul Brook <paul@codesourcery.com>2009-07-17 13:12:41 +0100
commit379f6698d73f476de38682b3ff96ecb226728c43 (patch)
tree35ec0c77416322f16fa27d646af50c60363168e3 /cpu-all.h
parentSuppress a Sparse warning (diff)
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Userspace guest address offsetting
Re-implement GUEST_BASE support. Offset guest ddress space by default if the guest binary contains regions below the host mmap_min_addr. Implement support for i386, x86-64 and arm hosts. Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Paul Brook <paul@codesourcery.com>
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 116678677..96b25fca8 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))