target/xtensa: support MTTCG

- emit TCG barriers for MEMW, EXTW, S32RI and L32AI;
- do atomic_cmpxchg_i32 for S32C1I.

Cc: Emilio G. Cota <cota@braap.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index af72fc852e..c0cb9e6498 100755
--- a/configure
+++ b/configure
@@ -6840,6 +6840,7 @@ case "$target_name" in
   ;;
   xtensa|xtensaeb)
     TARGET_ARCH=xtensa
+    mttcg="yes"
   ;;
   *)
     error_exit "Unsupported target CPU"