[Qemu-devel] [PATCH v2 24/67] target/arm: Implement SVE Bitwise Immediate Group

[Richard Henderson]

Signed-off-by: Richard Henderson <address@hidden>
---
 target/arm/translate-sve.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++
 target/arm/sve.decode      | 17 ++++++++++++++++
 2 files changed, 67 insertions(+)

diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index 702f20e97b..21b1e4df85 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -34,6 +34,8 @@
 #include "translate-a64.h"
 
 typedef void GVecGen2Fn(unsigned, uint32_t, uint32_t, uint32_t, uint32_t);
+typedef void GVecGen2iFn(unsigned, uint32_t, uint32_t,
+                         int64_t, uint32_t, uint32_t);
 typedef void GVecGen3Fn(unsigned, uint32_t, uint32_t,
                         uint32_t, uint32_t, uint32_t);
 
@@ -1648,6 +1650,54 @@ static void trans_SINCDEC_v(DisasContext *s, 
arg_incdec2_cnt *a,
     }
 }
 
+/*
+ *** SVE Bitwise Immediate Group
+ */
+
+static void do_zz_dbm(DisasContext *s, arg_rr_dbm *a, GVecGen2iFn *gvec_fn)
+{
+    unsigned vsz;
+    uint64_t imm;
+
+    if (!logic_imm_decode_wmask(&imm, extract32(a->dbm, 12, 1),
+                                extract32(a->dbm, 0, 6),
+                                extract32(a->dbm, 6, 6))) {
+        unallocated_encoding(s);
+        return;
+    }
+
+    vsz = vec_full_reg_size(s);
+    gvec_fn(MO_64, vec_full_reg_offset(s, a->rd),
+            vec_full_reg_offset(s, a->rn), imm, vsz, vsz);
+}
+
+static void trans_AND_zzi(DisasContext *s, arg_rr_dbm *a, uint32_t insn)
+{
+    do_zz_dbm(s, a, tcg_gen_gvec_andi);
+}
+
+static void trans_ORR_zzi(DisasContext *s, arg_rr_dbm *a, uint32_t insn)
+{
+    do_zz_dbm(s, a, tcg_gen_gvec_ori);
+}
+
+static void trans_EOR_zzi(DisasContext *s, arg_rr_dbm *a, uint32_t insn)
+{
+    do_zz_dbm(s, a, tcg_gen_gvec_xori);
+}
+
+static void trans_DUPM(DisasContext *s, arg_DUPM *a, uint32_t insn)
+{
+    uint64_t imm;
+    if (!logic_imm_decode_wmask(&imm, extract32(a->dbm, 12, 1),
+                                extract32(a->dbm, 0, 6),
+                                extract32(a->dbm, 6, 6))) {
+        unallocated_encoding(s);
+        return;
+    }
+    do_dupi_z(s, a->rd, imm);
+}
+
 /*
  *** SVE Memory - 32-bit Gather and Unsized Contiguous Group
  */
diff --git a/target/arm/sve.decode b/target/arm/sve.decode
index 5690b5fcb9..0990d135f4 100644
--- a/target/arm/sve.decode
+++ b/target/arm/sve.decode
@@ -50,6 +50,7 @@
 
 &rr_esz                rd rn esz
 &rri           rd rn imm
+&rr_dbm                rd rn dbm
 &rrri          rd rn rm imm
 &rri_esz       rd rn imm esz
 &rrr_esz       rd rn rm esz
@@ -112,6 +113,10 @@
 @rd_rn_tszimm  ........ .. ... ... ...... rn:5 rd:5 \
                &rri_esz esz=%tszimm16_esz
 
+# Two register operand, one encoded bitmask.
address@hidden  ........ .. .... dbm:13 rd:5 \
+               &rr_dbm rn=%reg_movprfx
+
 # Basic Load/Store with 9-bit immediate offset
 @pd_rn_i9      ........ ........ ...... rn:5 . rd:4    \
                &rri imm=%imm9_16_10
@@ -331,6 +336,18 @@ INCDEC_v   00000100 .. 1 1 .... 1100 0 d:1 ..... .....    
@incdec2_cnt u=1
 # Note these require esz != 0.
 SINCDEC_v      00000100 .. 1 0 .... 1100 d:1 u:1 ..... .....   @incdec2_cnt
 
+### SVE Bitwise Immediate Group
+
+# SVE bitwise logical with immediate (unpredicated)
+ORR_zzi                00000101 00 0000 ............. .....            @rdn_dbm
+EOR_zzi                00000101 01 0000 ............. .....            @rdn_dbm
+AND_zzi                00000101 10 0000 ............. .....            @rdn_dbm
+
+# SVE broadcast bitmask immediate
+DUPM           00000101 11 0000 dbm:13 rd:5
+
+### SVE Predicate Logical Operations Group
+
 # SVE predicate logical operations
 AND_pppp       00100101 0. 00 .... 01 .... 0 .... 0 ....       @pd_pg_pn_pm_s
 BIC_pppp       00100101 0. 00 .... 01 .... 0 .... 1 ....       @pd_pg_pn_pm_s
-- 
2.14.3