Patchwork [050/147] target-s390: Convert LOAD PSW

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Submitter Richard Henderson
Date Sept. 27, 2012, 11:41 p.m.
Message ID <1348789300-24801-1-git-send-email-rth@twiddle.net>
Download mbox | patch
Permalink /patch/187562/
State New
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Richard Henderson - Sept. 27, 2012, 11:41 p.m.
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-s390x/insn-data.def |  2 ++
 target-s390x/translate.c   | 41 +++++++++++++++++++++--------------------
 2 files changed, 23 insertions(+), 20 deletions(-)

Patch

diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index 45c36c1..b0bee9b 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -379,6 +379,8 @@ 
     D(0xa701, TMLL,    RI_a,  Z,   r1_o, i2_16u_shl, 0, 0, 0, tm64, 0)
 
 #ifndef CONFIG_USER_ONLY
+/* LOAD PSW */
+    C(0x8200, LPSW,    S,     Z,   0, a2, 0, 0, lpsw, 0)
 /* SET ADDRESSING MODE */
     /* We only do 64-bit, so accept this as a no-op.
        Let SAM24 and SAM31 signal illegal instruction.  */
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index bbdecab..ea876a0 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -2356,26 +2356,6 @@  static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
 
     switch (opc) {
 #ifndef CONFIG_USER_ONLY
-    case 0x82: /* LPSW     D2(B2)       [S] */
-        /* Load PSW */
-        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_qemu_ld32u(tmp2, tmp, get_mem_index(s));
-        tcg_gen_addi_i64(tmp, tmp, 4);
-        tcg_gen_qemu_ld32u(tmp3, tmp, get_mem_index(s));
-        /* Convert the 32-bit PSW_MASK into the 64-bit PSW_MASK.  */
-        tcg_gen_shli_i64(tmp2, tmp2, 32);
-        gen_helper_load_psw(cpu_env, tmp2, tmp3);
-        tcg_temp_free_i64(tmp);
-        tcg_temp_free_i64(tmp2);
-        tcg_temp_free_i64(tmp3);
-        /* we need to keep cc_op intact */
-        s->is_jmp = DISAS_JUMP;
-        break;
     case 0x83: /* DIAG     R1,R3,D2     [RS] */
         /* Diagnose call (KVM hypercall) */
         check_privileged(s);
@@ -3511,6 +3491,27 @@  static ExitStatus op_ld64(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+#ifndef CONFIG_USER_ONLY
+static ExitStatus op_lpsw(DisasContext *s, DisasOps *o)
+{
+    TCGv_i64 t1, t2;
+
+    check_privileged(s);
+
+    t1 = tcg_temp_new_i64();
+    t2 = tcg_temp_new_i64();
+    tcg_gen_qemu_ld32u(t1, o->in2, get_mem_index(s));
+    tcg_gen_addi_i64(o->in2, o->in2, 4);
+    tcg_gen_qemu_ld32u(t2, o->in2, get_mem_index(s));
+    /* Convert the 32-bit PSW_MASK into the 64-bit PSW_MASK.  */
+    tcg_gen_shli_i64(t1, t1, 32);
+    gen_helper_load_psw(cpu_env, t1, t2);
+    tcg_temp_free_i64(t1);
+    tcg_temp_free_i64(t2);
+    return EXIT_NORETURN;
+}
+#endif
+
 static ExitStatus op_mov2(DisasContext *s, DisasOps *o)
 {
     o->out = o->in2;