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> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5956 c046a42c-6fe2-441c-8c8c-71466251a162
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				@ -638,6 +638,10 @@ static inline void stfq_be_p(void *ptr, float64 v)
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    assert(__ret == (abi_ulong)__ret); \
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					    assert(__ret == (abi_ulong)__ret); \
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    (abi_ulong)__ret; \
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					    (abi_ulong)__ret; \
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})
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					})
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					#define h2g_valid(x) ({ \
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					    unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
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					    (__guest == (abi_ulong)__guest); \
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					})
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#define saddr(x) g2h(x)
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					#define saddr(x) g2h(x)
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#define laddr(x) g2h(x)
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					#define laddr(x) g2h(x)
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