[24/26] target/s390x: implement TEST DECIMAL

Commit Message

Aurelien Jarno May 25, 2017, 9:05 p.m. UTC

Signed-off-by: Aurelien Jarno <[e-mail]>
---
 target/s390x/helper.h      |  1 +
 target/s390x/insn-data.def |  3 +++
 target/s390x/mem_helper.c  | 23 +++++++++++++++++++++++
 target/s390x/translate.c   |  9 +++++++++
 4 files changed, 36 insertions(+)

Comments

Richard Henderson May 26, 2017, 4:52 p.m. UTC | #1

On 05/25/2017 02:05 PM, Aurelien Jarno wrote:
> Signed-off-by: Aurelien Jarno<[e-mail]>
> ---
>   target/s390x/helper.h      |  1 +
>   target/s390x/insn-data.def |  3 +++
>   target/s390x/mem_helper.c  | 23 +++++++++++++++++++++++
>   target/s390x/translate.c   |  9 +++++++++
>   4 files changed, 36 insertions(+)

Reviewed-by: Richard Henderson <[e-mail]>


r~

Patch

diff --git a/target/s390x/helper.h b/target/s390x/helper.h
index 8d94018a3f..7bfb0223ce 100644
--- a/target/s390x/helper.h
+++ b/target/s390x/helper.h
@@ -88,6 +88,7 @@  DEF_HELPER_FLAGS_4(pku, TCG_CALL_NO_WG, void, env, i64, i64, i32)
 DEF_HELPER_FLAGS_4(unpk, TCG_CALL_NO_WG, void, env, i32, i64, i64)
 DEF_HELPER_FLAGS_4(unpka, TCG_CALL_NO_WG, i32, env, i64, i32, i64)
 DEF_HELPER_FLAGS_4(unpku, TCG_CALL_NO_WG, i32, env, i64, i32, i64)
+DEF_HELPER_FLAGS_3(tp, TCG_CALL_NO_WG, i32, env, i64, i32)
 DEF_HELPER_FLAGS_4(tr, TCG_CALL_NO_WG, void, env, i32, i64, i64)
 DEF_HELPER_4(tre, i64, env, i64, i64, i64)
 DEF_HELPER_4(trt, i32, env, i32, i64, i64)
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 56928c24a5..c0fe04e45c 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -850,6 +850,9 @@ 
     C(0xed11, TCDB,    RXE,   Z,   f1_o, a2, 0, 0, tcdb, 0)
     C(0xed12, TCXB,    RXE,   Z,   x1_o, a2, 0, 0, tcxb, 0)
 
+/* TEST DECIMAL */
+    C(0xebc0, TP,      RSL,   E2,  la1, 0, 0, 0, tp, 0)
+
 /* TEST UNDER MASK */
     C(0x9100, TM,      SI,    Z,   m1_8u, i2_8u, 0, 0, 0, tm32)
     C(0xeb51, TMY,     SIY,   LD,  m1_8u, i2_8u, 0, 0, 0, tm32)
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index 3366c2e799..b6e083c7e1 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -1134,6 +1134,29 @@  uint32_t HELPER(unpku)(CPUS390XState *env, uint64_t dest, uint32_t destlen,
     return do_unpkau(env, dest, destlen, 2, src, GETPC());
 }
 
+uint32_t HELPER(tp)(CPUS390XState *env, uint64_t dest, uint32_t destlen)
+{
+    uintptr_t ra = GETPC();
+    uint32_t cc = 0;
+    int i;
+
+    for (i = 0; i < destlen; i++) {
+        uint8_t b = cpu_ldub_data_ra(env, dest + i, ra);
+        /* digit */
+        cc |= (b & 0xf0) > 0x90 ? 2 : 0;
+
+        if (i == (destlen - 1)) {
+            /* sign */
+            cc |= (b & 0xf) < 0xa ? 1 : 0;
+        } else {
+            /* digit */
+            cc |= (b & 0xf) > 0x9 ? 2 : 0;
+        }
+    }
+
+    return cc;
+}
+
 static void do_helper_tr(CPUS390XState *env, uint32_t len, uint64_t array,
                          uint64_t trans, uintptr_t ra)
 {
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index d9a6a92984..b51342583e 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -4251,6 +4251,15 @@  static ExitStatus op_tprot(DisasContext *s, DisasOps *o)
 
 #endif
 
+static ExitStatus op_tp(DisasContext *s, DisasOps *o)
+{
+    TCGv_i32 l1 = tcg_const_i32(get_field(s->fields, l1) + 1);
+    gen_helper_tp(cc_op, cpu_env, o->addr1, l1);
+    tcg_temp_free_i32(l1);
+    set_cc_static(s);
+    return NO_EXIT;
+}
+
 static ExitStatus op_tr(DisasContext *s, DisasOps *o)
 {
     TCGv_i32 l = tcg_const_i32(get_field(s->fields, l1));