With the changes to Zb[abcs], there's some encodings that are
different in RV64 and RV32 (e.g., for rev8 and zext.h). For these,
we'll need a helper macro allowing us to select on RV32, as well.

Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---

(no changes since v3)

Changes in v3:
- Moved the REQUIRE_32BIT macro into a separate commit.

 target/riscv/translate.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index bdb47905f6..9b726ce9c4 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -417,6 +417,12 @@ EX_SH(12)
     }                              \
 } while (0)
 
+#define REQUIRE_32BIT(ctx) do { \
+    if (!is_32bit(ctx)) {       \
+        return false;           \
+    }                           \
+} while (0)
+
 #define REQUIRE_64BIT(ctx) do { \
     if (is_32bit(ctx)) {        \
         return false;           \
-- 
2.25.1