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linux-user: Introduce h2g_valid

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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>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5956 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-12-08 18:12:18 +00:00
parent 0e62fd7957
commit 14cc46b19a
1 changed files with 4 additions and 0 deletions
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4
cpu-all.h
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@ -638,6 +638,10 @@ static inline void stfq_be_p(void *ptr, float64 v)
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)