s390x/tcg: Implement CIPHER MESSAGE WITH AUTHENTICATION (KMA)

As with the other crypto functions, we only implement subcode 0 (query)
and no actual encryption/decryption. We now implement S390_FEAT_MSA_EXT_8.

Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200928122717.30586-10-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

target/s390x/gen-features.c

@@ -719,6 +719,7 @@ static uint16_t qemu_MAX[] = {
     /* features introduced after the z13 */
     S390_FEAT_INSTRUCTION_EXEC_PROT,
     S390_FEAT_MISC_INSTRUCTION_EXT2,
+    S390_FEAT_MSA_EXT_8,
 };
 
 /****** END FEATURE DEFS ******/

target/s390x/insn-data.def

@@ -982,6 +982,7 @@
     D(0xb92d, KMCTR,   RRF_b, MSA4, 0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_KMCTR)
     D(0xb92e, KM,      RRE,   MSA,  0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_KM)
     D(0xb92f, KMC,     RRE,   MSA,  0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_KMC)
+    D(0xb929, KMA,     RRF_b, MSA8, 0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_KMA)
     D(0xb93c, PPNO,    RRE,   MSA5, 0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_PPNO)
     D(0xb93e, KIMD,    RRE,   MSA,  0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_KIMD)
     D(0xb93f, KLMD,    RRE,   MSA,  0, 0, 0, 0, msa, 0, S390_FEAT_TYPE_KLMD)

target/s390x/translate.c

@@ -2710,6 +2710,12 @@ static DisasJumpType op_msa(DisasContext *s, DisasOps *o)
     TCGv_i32 t_r1, t_r2, t_r3, type;
 
     switch (s->insn->data) {
+    case S390_FEAT_TYPE_KMA:
+        if (r3 == r1 || r3 == r2) {
+            gen_program_exception(s, PGM_SPECIFICATION);
+            return DISAS_NORETURN;
+        }
+        /* FALL THROUGH */
     case S390_FEAT_TYPE_KMCTR:
         if (r3 & 1 || !r3) {
             gen_program_exception(s, PGM_SPECIFICATION);
@@ -6154,6 +6160,7 @@ enum DisasInsnEnum {
 #define FAC_MSA3        S390_FEAT_MSA_EXT_3 /* msa-extension-3 facility */
 #define FAC_MSA4        S390_FEAT_MSA_EXT_4 /* msa-extension-4 facility */
 #define FAC_MSA5        S390_FEAT_MSA_EXT_5 /* msa-extension-5 facility */
+#define FAC_MSA8        S390_FEAT_MSA_EXT_8 /* msa-extension-8 facility */
 #define FAC_ECT         S390_FEAT_EXTRACT_CPU_TIME
 #define FAC_PCI         S390_FEAT_ZPCI /* z/PCI facility */
 #define FAC_AIS         S390_FEAT_ADAPTER_INT_SUPPRESSION