diff mbox

[08/26] target/s390x: implement MOVE INVERSE

Message ID 20170525210508.4910-9-aurelien@aurel32.net
State New
Headers show

Commit Message

Aurelien Jarno May 25, 2017, 9:04 p.m. UTC 
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 target/s390x/helper.h      |  1 +
 target/s390x/insn-data.def |  2 ++
 target/s390x/mem_helper.c  | 12 ++++++++++++
 target/s390x/translate.c   |  8 ++++++++
 4 files changed, 23 insertions(+)

Comments

Richard Henderson May 26, 2017, 2:10 p.m. UTC | #1 
On 05/25/2017 02:04 PM, Aurelien Jarno wrote:
> Signed-off-by: Aurelien Jarno<aurelien@aurel32.net>
> ---
>   target/s390x/helper.h      |  1 +
>   target/s390x/insn-data.def |  2 ++
>   target/s390x/mem_helper.c  | 12 ++++++++++++
>   target/s390x/translate.c   |  8 ++++++++
>   4 files changed, 23 insertions(+)

Reviewed-by: Richard Henderson <rth@twiddle.net>


r~
diff mbox

Patch

diff --git a/target/s390x/helper.h b/target/s390x/helper.h
index fdd6e76410..7d6f11abe8 100644
--- a/target/s390x/helper.h
+++ b/target/s390x/helper.h
@@ -3,6 +3,7 @@  DEF_HELPER_FLAGS_4(nc, TCG_CALL_NO_WG, i32, env, i32, i64, i64)
 DEF_HELPER_FLAGS_4(oc, TCG_CALL_NO_WG, i32, env, i32, i64, i64)
 DEF_HELPER_FLAGS_4(xc, TCG_CALL_NO_WG, i32, env, i32, i64, i64)
 DEF_HELPER_FLAGS_4(mvc, TCG_CALL_NO_WG, void, env, i32, i64, i64)
+DEF_HELPER_FLAGS_4(mvcin, TCG_CALL_NO_WG, void, env, i32, i64, i64)
 DEF_HELPER_FLAGS_4(clc, TCG_CALL_NO_WG, i32, env, i32, i64, i64)
 DEF_HELPER_3(mvcl, i32, env, i32, i32)
 DEF_HELPER_FLAGS_4(clm, TCG_CALL_NO_WG, i32, env, i32, i32, i64)
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 751e3164dd..52f943c71e 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -566,6 +566,8 @@ 
     C(0xe548, MVGHI,   SIL,   GIE, la1, i2, 0, m1_64, mov2, 0)
     C(0x9200, MVI,     SI,    Z,   la1, i2, 0, m1_8, mov2, 0)
     C(0xeb52, MVIY,    SIY,   LD,  la1, i2, 0, m1_8, mov2, 0)
+/* MOVE INVERSE */
+    C(0xe800, MVCIN,   SS_a,  Z,   la1, a2, 0, 0, mvcin, 0)
 /* MOVE LONG */
     C(0x0e00, MVCL,    RR_a,  Z,   0, 0, 0, 0, mvcl, 0)
 /* MOVE LONG EXTENDED */
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index f650b08779..7faaf588a5 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -232,6 +232,18 @@  void HELPER(mvc)(CPUS390XState *env, uint32_t l, uint64_t dest, uint64_t src)
     do_helper_mvc(env, l, dest, src, GETPC());
 }
 
+/* move inverse  */
+void HELPER(mvcin)(CPUS390XState *env, uint32_t l, uint64_t dest, uint64_t src)
+{
+    uintptr_t ra = GETPC();
+    int i;
+
+    for (i = 0; i <= l; i++) {
+        uint8_t v = cpu_ldub_data_ra(env, src - i, ra);
+        cpu_stb_data_ra(env, dest + i, v, ra);
+    }
+}
+
 /* compare unsigned byte arrays */
 static uint32_t do_helper_clc(CPUS390XState *env, uint32_t l, uint64_t s1,
                               uint64_t s2, uintptr_t ra)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index 231b51c313..b939c5a39f 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -2925,6 +2925,14 @@  static ExitStatus op_mvc(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+static ExitStatus op_mvcin(DisasContext *s, DisasOps *o)
+{
+    TCGv_i32 l = tcg_const_i32(get_field(s->fields, l1));
+    gen_helper_mvcin(cpu_env, l, o->addr1, o->in2);
+    tcg_temp_free_i32(l);
+    return NO_EXIT;
+}
+
 static ExitStatus op_mvcl(DisasContext *s, DisasOps *o)
 {
     TCGv_i32 r1 = tcg_const_i32(get_field(s->fields, r1));