From dfeab0689f69c0b4bd3480ffd37a9cacc2f17d9c Mon Sep 17 00:00:00 2001
From: "Ralf S. Engelschall" <rse@openssl.org>
Date: Mon, 21 Dec 1998 11:00:56 +0000
Subject: Import of old SSLeay release: SSLeay 0.9.1b (unreleased)

---
 crypto/bn/bn_lcl.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 72 insertions(+), 5 deletions(-)

(limited to 'crypto/bn/bn_lcl.h')

diff --git a/crypto/bn/bn_lcl.h b/crypto/bn/bn_lcl.h
index edfd788338..70b0787d8f 100644
--- a/crypto/bn/bn_lcl.h
+++ b/crypto/bn/bn_lcl.h
@@ -65,17 +65,68 @@
 extern "C" {
 #endif
 
+/* Pentium pro 16,16,16,32,64 */
+/* Alpha       16,16,16,16.64 */
+#define BN_MULL_SIZE_NORMAL			(16) // 32
+#define BN_MUL_RECURSIVE_SIZE_NORMAL		(16) // 32 /* less than */
+#define BN_SQR_RECURSIVE_SIZE_NORMAL		(16) // 32
+#define BN_MUL_LOW_RECURSIVE_SIZE_NORMAL	(32) // 32
+#define BN_MONT_CTX_SET_SIZE_WORD		(64) // 32
+
+#ifndef BN_MUL_COMBA
+#define bn_mul_comba8(r,a,b)	bn_mul_normal(r,a,8,b,8)
+#define bn_mul_comba4(r,a,b)	bn_mul_normal(r,a,4,b,4)
+/* This is probably faster than using the C code - I need to check */
+#define bn_sqr_comba8(r,a)	bn_mul_normal(r,a,8,a,8)
+#define bn_sqr_comba4(r,a)	bn_mul_normal(r,a,4,a,4)
+#endif
+
 /*************************************************************
  * Using the long long type
  */
 #define Lw(t)    (((BN_ULONG)(t))&BN_MASK2)
 #define Hw(t)    (((BN_ULONG)((t)>>BN_BITS2))&BN_MASK2)
 
-#define bn_fix_top(a) \
-        { \
-        BN_ULONG *fix_top_l; \
-        for (fix_top_l= &((a)->d[(a)->top-1]); (a)->top > 0; (a)->top--) \
-		if (*(fix_top_l--)) break; \
+/* These are used for internal error checking and are not normally used */
+#ifdef BN_DEBUG
+#define bn_check_top(a) \
+	{ if (((a)->top < 0) || ((a)->top > (a)->max)) \
+		{ char *nullp=NULL; *nullp='z'; } }
+#define bn_check_num(a) if ((a) < 0) { char *nullp=NULL; *nullp='z'; }
+#else
+#define bn_check_top(a)
+#define bn_check_num(a)
+#endif
+
+/* This macro is to add extra stuff for development checking */
+#ifdef BN_DEBUG
+#define	bn_set_max(r) ((r)->max=(r)->top,BN_set_flags((r),BN_FLG_STATIC_DATA))
+#else
+#define	bn_set_max(r)
+#endif
+
+/* These macros are used to 'take' a section of a bignum for read only use */
+#define bn_set_low(r,a,n) \
+	{ \
+	(r)->top=((a)->top > (n))?(n):(a)->top; \
+	(r)->d=(a)->d; \
+	(r)->neg=(a)->neg; \
+	(r)->flags|=BN_FLG_STATIC_DATA; \
+	bn_set_max(r); \
+	}
+
+#define bn_set_high(r,a,n) \
+	{ \
+	if ((a)->top > (n)) \
+		{ \
+		(r)->top=(a)->top-n; \
+		(r)->d= &((a)->d[n]); \
+		} \
+	else \
+		(r)->top=0; \
+	(r)->neg=(a)->neg; \
+	(r)->flags|=BN_FLG_STATIC_DATA; \
+	bn_set_max(r); \
 	}
 
 /* #define bn_expand(n,b) ((((b)/BN_BITS2) <= (n)->max)?(n):bn_expand2((n),(b))) */
@@ -175,6 +226,17 @@ extern "C" {
 
 #endif
 
+extern int bn_limit_bits;
+extern int bn_limit_num;        /* (1<<bn_limit_bits) */
+/* Recursive 'low' limit */
+extern int bn_limit_bits_low;
+extern int bn_limit_num_low;    /* (1<<bn_limit_bits_low) */
+/* Do modified 'high' part calculation' */
+extern int bn_limit_bits_high;
+extern int bn_limit_num_high;   /* (1<<bn_limit_bits_high) */
+extern int bn_limit_bits_mont;
+extern int bn_limit_num_mont;   /* (1<<bn_limit_bits_mont) */
+
 #ifndef NOPROTO
 
 BIGNUM *bn_expand2(BIGNUM *b, int bits);
@@ -197,3 +259,8 @@ BN_ULONG bn_add_words();
 #endif
 
 #endif
+
+void bn_mul_low_recursive(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b,int n2,BN_ULONG *t);
+void bn_mul_high(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b,BN_ULONG *l,int n2, BN_ULONG *t);
+
+
-- 
cgit v1.2.3