[PATCH] target/s390x: Fix the accumulation of ccm in op_icm

[Richard Henderson]

Coverity rightly reports that 0xff << pos can overflow.
This would affect the ICMH instruction.

Fixes: Coverity CID 1487161
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
 target/s390x/tcg/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c
index 5acfc0ff9b..ea7baf0832 100644
--- a/target/s390x/tcg/translate.c
+++ b/target/s390x/tcg/translate.c
@@ -2622,7 +2622,7 @@ static DisasJumpType op_icm(DisasContext *s, DisasOps *o)
                 tcg_gen_qemu_ld8u(tmp, o->in2, get_mem_index(s));
                 tcg_gen_addi_i64(o->in2, o->in2, 1);
                 tcg_gen_deposit_i64(o->out, o->out, tmp, pos, 8);
-                ccm |= 0xff << pos;
+                ccm |= 0xffull << pos;
             }
             m3 = (m3 << 1) & 0xf;
             pos -= 8;
-- 
2.25.1