Use the new cpu_loop_exit_sigbus for atomic_mmu_lookup, which
has access to complete alignment info from the TCGMemOpIdx arg.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
accel/tcg/user-exec.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 5646f8e527..92cbffd7c6 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -476,11 +476,22 @@ static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
MemOpIdx oi, int size, int prot,
uintptr_t retaddr)
{
+ MemOp mop = get_memop(oi);
+ int a_bits = get_alignment_bits(mop);
+ void *ret;
+
+ /* Enforce guest required alignment. */
+ if (unlikely(addr & ((1 << a_bits) - 1))) {
+ MMUAccessType t = prot == PAGE_READ ? MMU_DATA_LOAD : MMU_DATA_STORE;
+ cpu_loop_exit_sigbus(env_cpu(env), addr, t, retaddr);
+ }
+
/* Enforce qemu required alignment. */
if (unlikely(addr & (size - 1))) {
cpu_loop_exit_atomic(env_cpu(env), retaddr);
}
- void *ret = g2h(env_cpu(env), addr);
+
+ ret = g2h(env_cpu(env), addr);
set_helper_retaddr(retaddr);
return ret;
}
--
2.25.1