* [Qemu-devel] [5956] linux-user: Introduce h2g_valid
@ 2008-12-08 18:12 Aurelien Jarno
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From: Aurelien Jarno @ 2008-12-08 18:12 UTC (permalink / raw)
To: qemu-devel
Revision: 5956
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5956
Author: aurel32
Date: 2008-12-08 18:12:18 +0000 (Mon, 08 Dec 2008)
Log Message:
-----------
linux-user: Introduce h2g_valid
Introduce h2g_valid to check if a given host address can be converted
into a valid guest address.
Based on a patch from Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/cpu-all.h
Modified: trunk/cpu-all.h
===================================================================
--- trunk/cpu-all.h 2008-12-08 18:12:11 UTC (rev 5955)
+++ trunk/cpu-all.h 2008-12-08 18:12:18 UTC (rev 5956)
@@ -638,6 +638,10 @@
assert(__ret == (abi_ulong)__ret); \
(abi_ulong)__ret; \
})
+#define h2g_valid(x) ({ \
+ unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
+ (__guest == (abi_ulong)__guest); \
+})
#define saddr(x) g2h(x)
#define laddr(x) g2h(x)
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