diff options
| -rw-r--r-- | accel/tcg/user-exec.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index c4f69908e9..1ee64f01fc 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -474,11 +474,22 @@ 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; } |