Handle special cases correctly in exponentation functions.

[openssl.git] / crypto / opensslconf.h.in

diff --git a/crypto/opensslconf.h.in b/crypto/opensslconf.h.in
index 5c9ee256e188a06c4fc0c9d519daf26bdd10ae45..1b85ae598998e15e98305215d7168c5903cfc254 100644 (file)
--- a/crypto/opensslconf.h.in
+++ b/crypto/opensslconf.h.in
@@ -1,5 +1,4 @@
-/* crypto/opensslconf.h */
-/* WARNING: This file is autogenerated by Configure */
+/* crypto/opensslconf.h.in */
 
 /* Generate 80386 code? */
 #undef I386_ONLY
@@ -10,6 +9,8 @@
 #endif
 #endif
 
+#define OPENSSL_UNISTD <unistd.h>
+
 #if defined(HEADER_IDEA_H) && !defined(IDEA_INT)
 #define IDEA_INT unsigned int
 #endif
@@ -23,11 +24,25 @@
 #define RC2_INT unsigned int
 #endif
 
-#if defined(HEADER_RC4_H) && !defined(RC4_INT)
+#if defined(HEADER_RC4_H)
+#if !defined(RC4_INT)
 /* using int types make the structure larger but make the code faster
  * on most boxes I have tested - up to %20 faster. */
+/*
+ * I don't know what does "most" mean, but declaring "int" is a must on:
+ * - Intel P6 because partial register stalls are very expensive;
+ * - elder Alpha because it lacks byte load/store instructions;
+ */
 #define RC4_INT unsigned int
 #endif
+#if !defined(RC4_CHUNK)
+/*
+ * This enables code handling data aligned at natural CPU word
+ * boundary. See crypto/rc4/rc4_enc.c for further details.
+ */
+#undef RC4_CHUNK
+#endif
+#endif
 
 #if defined(HEADER_DES_H) && !defined(DES_LONG)
 /* If this is set to 'unsigned int' on a DEC Alpha, this gives about a