[Qemu-devel] [PATCH v2 10/28] s390x/tcg: MVCS/MVCP: Check for special operation exceptions

[David Hildenbrand]

Let's perform the documented checks.

Signed-off-by: David Hildenbrand <address@hidden>
---
 target/s390x/mem_helper.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index 6d8ebd18fa..041d01d63d 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -1961,12 +1961,18 @@ uint32_t HELPER(rrbe)(CPUS390XState *env, uint64_t r2)
 
 uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2)
 {
+    const uint8_t psw_as = (env->psw.mask & PSW_MASK_ASC) >> PSW_SHIFT_ASC;
     uintptr_t ra = GETPC();
     int cc = 0, i;
 
     HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n",
                __func__, l, a1, a2);
 
+    if (!(env->psw.mask & PSW_MASK_DAT) || !(env->cregs[0] & CR0_SECONDARY) ||
+        psw_as == AS_HOME || psw_as == AS_ACCREG) {
+        s390_program_interrupt(env, PGM_SPECIAL_OP, ILEN_AUTO, ra);
+    }
+
     if (l > 256) {
         /* max 256 */
         l = 256;
@@ -1984,12 +1990,18 @@ uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, 
uint64_t a1, uint64_t a2)
 
 uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2)
 {
+    const uint8_t psw_as = (env->psw.mask & PSW_MASK_ASC) >> PSW_SHIFT_ASC;
     uintptr_t ra = GETPC();
     int cc = 0, i;
 
     HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n",
                __func__, l, a1, a2);
 
+    if (!(env->psw.mask & PSW_MASK_DAT) || !(env->cregs[0] & CR0_SECONDARY) ||
+        psw_as == AS_HOME || psw_as == AS_ACCREG) {
+        s390_program_interrupt(env, PGM_SPECIAL_OP, ILEN_AUTO, ra);
+    }
+
     if (l > 256) {
         /* max 256 */
         l = 256;
-- 
2.21.0