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tcg: Make probe_write() return a pointer to the host page

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... similar to tlb_vaddr_to_host(); however, allow access to the host
page except when TLB_NOTDIRTY or TLB_MMIO is set.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190830100959.26615-2-david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
David Hildenbrand 2019-08-30 12:09:58 +02:00 • committed by Richard Henderson
parent 9cd9cdaefc
commit fef39ccd56
3 changed files with 22 additions and 9 deletions
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6
accel/tcg/user-exec.c
View file

@ -188,8 +188,8 @@ static inline int handle_cpu_signal(uintptr_t pc, siginfo_t *info,
g_assert_not_reached();
}
void probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
uintptr_t retaddr)
void *probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
uintptr_t retaddr)
{
g_assert(-(addr | TARGET_PAGE_MASK) >= size);
@ -202,6 +202,8 @@ void probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
retaddr);
g_assert_not_reached();
}
return size ? g2h(addr) : NULL;
}
#if defined(__i386__)