target/riscv: Use gen_unary_per_ol for RVB

The count zeros instructions require a separate implementation
for RV32 when TARGET_LONG_BITS == 64.

Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20211020031709.359469-13-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index cb515e2a3c..f3a5870ad0 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -486,6 +486,22 @@ static bool gen_unary(DisasContext *ctx, arg_r2 *a, DisasExtend ext,
     return true;
 }
 
+static bool gen_unary_per_ol(DisasContext *ctx, arg_r2 *a, DisasExtend ext,
+                             void (*f_tl)(TCGv, TCGv),
+                             void (*f_32)(TCGv, TCGv))
+{
+    int olen = get_olen(ctx);
+
+    if (olen != TARGET_LONG_BITS) {
+        if (olen == 32) {
+            f_tl = f_32;
+        } else {
+            g_assert_not_reached();
+        }
+    }
+    return gen_unary(ctx, a, ext, f_tl);
+}
+
 static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
 {
     DisasContext *ctx = container_of(dcbase, DisasContext, base);