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[Qemu-devel] [PATCH v4 3/3] target/s390x: check alignment in CDSG in the
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH v4 3/3] target/s390x: check alignment in CDSG in the !CONFIG_ATOMIC128 case |
Date: |
Sun, 4 Jun 2017 22:20:34 +0200 |
The CDSG instruction requires a 16-byte alignement, as expressed in
the MO_ALIGN_16 passed to helper_atomic_cmpxchgo_be_mmu. In the non
parallel case, use check_alignment to enforce this.
Signed-off-by: Aurelien Jarno <address@hidden>
---
target/s390x/mem_helper.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index a8988e0293..80caab9c9d 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -1262,6 +1262,8 @@ void HELPER(cdsg)(CPUS390XState *env, uint64_t addr,
} else {
uint64_t oldh, oldl;
+ check_alignment(env, addr, 16, ra);
+
oldh = cpu_ldq_data_ra(env, addr + 0, ra);
oldl = cpu_ldq_data_ra(env, addr + 8, ra);
--
2.11.0