[Qemu-devel] [PATCH 020/126] target-s390: Convert LOAD AND TEST

[Richard Henderson <rth@twiddle.net>]

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-s390x/insn-data.def |  7 +++++++
 target-s390x/translate.c   | 37 ++++++++++---------------------------
 2 files changed, 17 insertions(+), 27 deletions(-)

diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index 6b08340..06d0ad8 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -126,6 +126,13 @@
     C(0xe371, LAY,     RXY_a, LD,  0, a2, 0, r1, mov2, 0)
 /* LOAD ADDRESS RELATIVE LONG */
     C(0xc000, LARL,    RIL_b, Z,   0, ri2, 0, r1, mov2, 0)
+/* LOAD AND TEST */
+    C(0x1200, LTR,     RR_a,  Z,   0, r2_o, 0, cond_r1r2_32, mov2, s32)
+    C(0xb902, LTGR,    RRE,   Z,   0, r2_o, 0, r1, mov2, s64)
+    C(0xb912, LTGFR,   RRE,   Z,   0, r2_32s, 0, r1, mov2, s64)
+    C(0xe312, LT,      RXY_a, EI,  0, a2, new, r1_32, ld32s, s64)
+    C(0xe302, LTG,     RXY_a, EI,  0, a2, r1, 0, ld64, s64)
+    C(0xe332, LTGF,    RXY_a, GIE, 0, a2, r1, 0, ld32s, s64)
 /* LOAD BYTE */
     C(0xb926, LBR,     RRE,   EI,  0, r2_8s, 0, r1_32, mov2, 0)
     C(0xb906, LGBR,    RRE,   EI,  0, r2_8s, 0, r1, mov2, 0)
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index e9c9f34..1c83009 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -1344,23 +1344,6 @@ static void disas_e3(DisasContext* s, int op, int r1, int x2, int b2, int d2)
               op, r1, x2, b2, d2);
     addr = get_address(s, x2, b2, d2);
     switch (op) {
-    case 0x2: /* LTG R1,D2(X2,B2) [RXY] */
-    case 0x4: /* LG r1,d2(x2,b2) */
-        tcg_gen_qemu_ld64(regs[r1], addr, get_mem_index(s));
-        if (op == 0x2) {
-            set_cc_s64(s, regs[r1]);
-        }
-        break;
-    case 0x12: /* LT R1,D2(X2,B2) [RXY] */
-        tmp2 = tcg_temp_new_i64();
-        tmp32_1 = tcg_temp_new_i32();
-        tcg_gen_qemu_ld32s(tmp2, addr, get_mem_index(s));
-        tcg_gen_trunc_i64_i32(tmp32_1, tmp2);
-        store_reg32(r1, tmp32_1);
-        set_cc_s32(s, tmp32_1);
-        tcg_temp_free_i64(tmp2);
-        tcg_temp_free_i32(tmp32_1);
-        break;
     case 0xd: /* DSG      R1,D2(X2,B2)     [RXY] */
     case 0x1d: /* DSGF      R1,D2(X2,B2)     [RXY] */
         tmp2 = tcg_temp_new_i64();
@@ -3176,16 +3159,6 @@ static void disas_s390_insn(DisasContext *s)
         store_reg32(r1, tmp32_1);
         tcg_temp_free_i32(tmp32_1);
         break;
-    case 0x12: /* LTR    R1,R2     [RR] */
-        insn = ld_code2(s->pc);
-        decode_rr(s, insn, &r1, &r2);
-        tmp32_1 = load_reg32(r2);
-        if (r1 != r2) {
-            store_reg32(r1, tmp32_1);
-        }
-        set_cc_s32(s, tmp32_1);
-        tcg_temp_free_i32(tmp32_1);
-        break;
     case 0x13: /* LCR    R1,R2     [RR] */
         insn = ld_code2(s->pc);
         decode_rr(s, insn, &r1, &r2);
@@ -4383,6 +4356,16 @@ static void cout_nz64(DisasContext *s, DisasOps *o)
     gen_op_update1_cc_i64(s, CC_OP_NZ, o->out);
 }
 
+static void cout_s32(DisasContext *s, DisasOps *o)
+{
+    gen_op_update1_cc_i64(s, CC_OP_LTGT0_32, o->out);
+}
+
+static void cout_s64(DisasContext *s, DisasOps *o)
+{
+    gen_op_update1_cc_i64(s, CC_OP_LTGT0_64, o->out);
+}
+
 static void cout_subs32(DisasContext *s, DisasOps *o)
 {
     gen_op_update3_cc_i64(s, CC_OP_SUB_32, o->in1, o->in2, o->out);
-- 
1.7.11.4