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[v2,12/28] s390x/tcg: MVST: Check for specification exceptions

Message ID 20190906075750.14791-13-david@redhat.com (mailing list archive)
State New, archived
Headers show
Series s390x/tcg: mem_helper: Fault-safe handling | expand

Commit Message

David Hildenbrand Sept. 6, 2019, 7:57 a.m. UTC 
Bit position 32-55 of general register 0 must be zero.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/mem_helper.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Richard Henderson Sept. 11, 2019, 3:14 p.m. UTC | #1 
On 9/6/19 3:57 AM, David Hildenbrand wrote:
> Bit position 32-55 of general register 0 must be zero.
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  target/s390x/mem_helper.c | 3 +++
>  1 file changed, 3 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
diff mbox series

Patch

diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index de5e69b500..afcd452a00 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -699,6 +699,9 @@  uint64_t HELPER(mvst)(CPUS390XState *env, uint64_t c, uint64_t d, uint64_t s)
     uintptr_t ra = GETPC();
     uint32_t len;
 
+    if (c & 0xffffff00ull) {
+        s390_program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO, ra);
+    }
     c = c & 0xff;
     d = wrap_address(env, d);
     s = wrap_address(env, s);