[RFC v3 04/16] target/riscv: rvb: logic-with-negate

[frank . chang]

From: Kito Cheng <kito.ch...@sifive.com>

Signed-off-by: Kito Cheng <kito.ch...@sifive.com>
Signed-off-by: Frank Chang <frank.ch...@sifive.com>
---
 target/riscv/insn32.decode              |  4 ++++
 target/riscv/insn_trans/trans_rvb.c.inc | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 0e321da37f4..d0b3f109b4e 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -598,3 +598,7 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
 clz        011000 000000 ..... 001 ..... 0010011 @r2
 ctz        011000 000001 ..... 001 ..... 0010011 @r2
 cpop       011000 000010 ..... 001 ..... 0010011 @r2
+
+andn       0100000 .......... 111 ..... 0110011 @r
+orn        0100000 .......... 110 ..... 0110011 @r
+xnor       0100000 .......... 100 ..... 0110011 @r
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc 
b/target/riscv/insn_trans/trans_rvb.c.inc
index dbbd94e1015..73c4693a263 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -35,6 +35,24 @@ static bool trans_cpop(DisasContext *ctx, arg_cpop *a)
     return gen_unary(ctx, a, tcg_gen_ctpop_tl);
 }
 
+static bool trans_andn(DisasContext *ctx, arg_andn *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_andc_tl);
+}
+
+static bool trans_orn(DisasContext *ctx, arg_orn *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_orc_tl);
+}
+
+static bool trans_xnor(DisasContext *ctx, arg_xnor *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_eqv_tl);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
-- 
2.17.1