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>

1 files changed, 4 insertions, 0 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 299bff6f03..4cb5934f53 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -46,6 +46,7 @@
 
 #include "qemu-common.h"
 #include "cache-utils.h"
+#include "host-utils.h"
 
 /* Note: the long term plan is to reduce the dependancies on the QEMU
    CPU definitions. Currently they are used for qemu_ld/st
@@ -57,6 +58,9 @@
 #include "tcg-op.h"
 #include "elf.h"
 
+#if defined(CONFIG_USE_GUEST_BASE) && !defined(TCG_TARGET_HAS_GUEST_BASE)
+#error GUEST_BASE not supported on this host.
+#endif
 
 static void patch_reloc(uint8_t *code_ptr, int type, 
                         tcg_target_long value, tcg_target_long addend);