2 files changed, 8 insertions, 1 deletions

diff --git a/src/lib/libcrypto/cast/asm/cast-586.pl b/src/lib/libcrypto/cast/asm/cast-586.pl
index bf6810d335..7a0083ecb8 100644
--- a/src/lib/libcrypto/cast/asm/cast-586.pl
+++ b/src/lib/libcrypto/cast/asm/cast-586.pl
@@ -29,7 +29,7 @@ $S4="CAST_S_table3";
 
 &CAST_encrypt("CAST_encrypt",1);
 &CAST_encrypt("CAST_decrypt",0);
-&cbc("CAST_cbc_encrypt","CAST_encrypt","CAST_decrypt",1,4,5,3,-1,-1);
+&cbc("CAST_cbc_encrypt","CAST_encrypt","CAST_decrypt",1,4,5,3,-1,-1) unless $main'openbsd;
 
 &asm_finish();
 
diff --git a/src/lib/libcrypto/cast/asm/readme b/src/lib/libcrypto/cast/asm/readme
new file mode 100644
index 0000000000..fbcd76289e
--- /dev/null
+++ b/src/lib/libcrypto/cast/asm/readme
@@ -0,0 +1,7 @@
+There is a ppro flag in cast-586 which turns on/off
+generation of pentium pro/II friendly code
+
+This flag makes the inner loop one cycle longer, but generates 
+code that runs %30 faster on the pentium pro/II, while only %7 slower
+on the pentium.  By default, this flag is on.
+