target-s390: Convert SET SYSTEM MASK

Signed-off-by: Richard Henderson <rth@twiddle.net>
qemu · Jan 5, 2013 · 7d30bb7 · 7d30bb7
1 parent c49daa5
commit 7d30bb7
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Showing 2 changed files with 11 additions and 16 deletions.
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
@@ -383,4 +383,6 @@
     /* We only do 64-bit, so accept this as a no-op.
        Let SAM24 and SAM31 signal illegal instruction.  */
     C(0x010e, SAM64,   E,     Z,   0, 0, 0, 0, 0, 0)
+/* SET SYSTEM MASK */
+    C(0x8000, SSM,     S,     Z,   0, m2_8u, 0, 0, ssm, 0)
 #endif /* CONFIG_USER_ONLY */
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
@@ -2356,22 +2356,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
 
     switch (opc) {
 #ifndef CONFIG_USER_ONLY
-    case 0x80: /* SSM      D2(B2)       [S] */
-        /* Set System Mask */
-        check_privileged(s);
-        insn = ld_code4(env, s->pc);
-        decode_rs(s, insn, &r1, &r3, &b2, &d2);
-        tmp = get_address(s, 0, b2, d2);
-        tmp2 = tcg_temp_new_i64();
-        tmp3 = tcg_temp_new_i64();
-        tcg_gen_andi_i64(tmp3, psw_mask, ~0xff00000000000000ULL);
-        tcg_gen_qemu_ld8u(tmp2, tmp, get_mem_index(s));
-        tcg_gen_shli_i64(tmp2, tmp2, 56);
-        tcg_gen_or_i64(psw_mask, tmp3, tmp2);
-        tcg_temp_free_i64(tmp);
-        tcg_temp_free_i64(tmp2);
-        tcg_temp_free_i64(tmp3);
-        break;
     case 0x82: /* LPSW     D2(B2)       [S] */
         /* Load PSW */
         check_privileged(s);
@@ -3607,6 +3591,15 @@ static ExitStatus op_ori(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+#ifndef CONFIG_USER_ONLY
+static ExitStatus op_ssm(DisasContext *s, DisasOps *o)
+{
+    check_privileged(s);
+    tcg_gen_deposit_i64(psw_mask, psw_mask, o->in2, 56, 8);
+    return NO_EXIT;
+}
+#endif
+
 static ExitStatus op_st8(DisasContext *s, DisasOps *o)
 {
     tcg_gen_qemu_st8(o->in1, o->in2, get_mem_index(s));