md32_common.h: Add Elbrus2000-specific version of ROTATE

Reviewed-by: Andrew Dinh <andrewd@openssl.org>
Reviewed-by: Igor Ustinov <igus@openssl.foundation>
MergeDate: Fri Jul 31 16:49:30 2026
(Merged from https://github.com/openssl/openssl/pull/31269)

diff --git a/include/crypto/md32_common.inc b/include/crypto/md32_common.inc
index 3dea481c5677d930a5d04139ce1138613afc5f5f..53c3bf7936b7311f726c5aef60192501fd972100 100644 (file)
--- a/include/crypto/md32_common.inc
+++ b/include/crypto/md32_common.inc
@@ -120,6 +120,11 @@
                        : "=r"(ret)                    \
                        : "r"(x), "i"(32 - (n))); ret; })
 #endif
+#  elif defined(__e2k__)
+#   undef ROTATE
+#   define ROTATE(a,n)  ( (__builtin_constant_p(n) && (n) > 16) \
+                          ? __builtin_e2k_scrs((a), 32 - (n))   \
+                          : __builtin_e2k_scls((a),      (n))   )
 #endif
 #endif
 #endif