#ifndef HEADER_BN_LCL_H
#define HEADER_BN_LCL_H
-#include "bn.h"
+#include <openssl/bn.h>
#ifdef __cplusplus
extern "C" {
/* 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
+#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 */
+#if 0
#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)
+/* #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) */
+#endif
+
+#ifndef BN_SQR_COMBA
/* 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
+#endif
+
+#if !defined(NO_ASM) && !defined(NO_INLINE_ASM) && !defined(PEDANTIC)
+/*
+ * BN_UMULT_HIGH section.
+ *
+ * No, I'm not trying to overwhelm you when stating that the
+ * product of N-bit numbers is 2*N bits wide:-) No, I don't expect
+ * you to be impressed when I say that if the compiler doesn't
+ * support 2*N integer type, then you have to replace every N*N
+ * multiplication with 4 (N/2)*(N/2) accompanied by some shifts
+ * and additions which unavoidably results in severe performance
+ * penalties. Of course provided that the hardware is capable of
+ * producing 2*N result... That's when you normally start
+ * considering assembler implementation. However! It should be
+ * pointed out that some CPUs (most notably Alpha, PowerPC and
+ * upcoming IA-64 family:-) provide *separate* instruction
+ * calculating the upper half of the product placing the result
+ * into a general purpose register. Now *if* the compiler supports
+ * inline assembler, then it's not impossible to implement the
+ * "bignum" routines (and have the compiler optimize 'em)
+ * exhibiting "native" performance in C. That's what BN_UMULT_HIGH
+ * macro is about:-)
+ *
+ * <appro@fy.chalmers.se>
+ */
+# if defined(__alpha) && (defined(SIXTY_FOUR_BIT_LONG) || defined(SIXTY_FOUR_BIT))
+# if defined(__DECC)
+# include <c_asm.h>
+# define BN_UMULT_HIGH(a,b) (BN_ULONG)asm("umulh %a0,%a1,%v0",(a),(b))
+# elif defined(__GNUC__)
+# define BN_UMULT_HIGH(a,b) ({ \
+ register BN_ULONG ret; \
+ asm ("umulh %1,%2,%0" \
+ : "=r"(ret) \
+ : "r"(a), "r"(b)); \
+ ret; })
+# endif /* compiler */
+# elif defined(_ARCH_PPC) && defined(__64BIT__) && defined(SIXTY_FOUR_BIT_LONG)
+# if defined(__GNUC__)
+# define BN_UMULT_HIGH(a,b) ({ \
+ register BN_ULONG ret; \
+ asm ("mulhdu %0,%1,%2" \
+ : "=r"(ret) \
+ : "r"(a), "r"(b)); \
+ ret; })
+# endif /* compiler */
+# endif /* cpu */
+#endif /* NO_ASM */
/*************************************************************
* Using the long long type
(c)= Hw(t); \
}
+#define sqr(r0,r1,a) { \
+ BN_ULLONG t; \
+ t=(BN_ULLONG)(a)*(a); \
+ (r0)=Lw(t); \
+ (r1)=Hw(t); \
+ }
+
+#elif defined(BN_UMULT_HIGH)
+#define mul_add(r,a,w,c) { \
+ BN_ULONG high,low,ret,tmp=(a); \
+ ret = (r); \
+ high= BN_UMULT_HIGH(w,tmp); \
+ ret += (c); \
+ low = (w) * tmp; \
+ (c) = (ret<(c))?1:0; \
+ (c) += high; \
+ ret += low; \
+ (c) += (ret<low)?1:0; \
+ (r) = ret; \
+ }
+
+#define mul(r,a,w,c) { \
+ BN_ULONG high,low,ret,ta=(a); \
+ low = (w) * ta; \
+ high= BN_UMULT_HIGH(w,ta); \
+ ret = low + (c); \
+ (c) = high; \
+ (c) += (ret<low)?1:0; \
+ (r) = ret; \
+ }
+
+#define sqr(r0,r1,a) { \
+ BN_ULONG tmp=(a); \
+ (r0) = tmp * tmp; \
+ (r1) = BN_UMULT_HIGH(tmp,tmp); \
+ }
+
#else
/*************************************************************
* No long long type
#endif
-extern int bn_limit_bits;
-extern int bn_limit_num; /* (1<<bn_limit_bits) */
+OPENSSL_EXTERN int bn_limit_bits;
+OPENSSL_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) */
+OPENSSL_EXTERN int bn_limit_bits_low;
+OPENSSL_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
+OPENSSL_EXTERN int bn_limit_bits_high;
+OPENSSL_EXTERN int bn_limit_num_high; /* (1<<bn_limit_bits_high) */
+OPENSSL_EXTERN int bn_limit_bits_mont;
+OPENSSL_EXTERN int bn_limit_num_mont; /* (1<<bn_limit_bits_mont) */
BIGNUM *bn_expand2(BIGNUM *b, int bits);
-#ifdef X86_ASM
-void bn_add_words(BN_ULONG *r,BN_ULONG *a,int num);
-#endif
-
-#else
-
-BIGNUM *bn_expand2();
-#ifdef X86_ASM
-BN_ULONG bn_add_words();
-#endif
-
-#endif
+void bn_mul_normal(BN_ULONG *r,BN_ULONG *a,int na,BN_ULONG *b,int nb);
+void bn_mul_comba8(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b);
+void bn_mul_comba4(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b);
+void bn_sqr_normal(BN_ULONG *r, BN_ULONG *a, int n, BN_ULONG *tmp);
+void bn_sqr_comba8(BN_ULONG *r,BN_ULONG *a);
+void bn_sqr_comba4(BN_ULONG *r,BN_ULONG *a);
+int bn_cmp_words(BN_ULONG *a,BN_ULONG *b,int n);
+void bn_mul_recursive(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b,int n2,BN_ULONG *t);
+void bn_mul_part_recursive(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b,
+ int tn, int n,BN_ULONG *t);
+void bn_sqr_recursive(BN_ULONG *r,BN_ULONG *a, int n2, BN_ULONG *t);
+void bn_mul_low_normal(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b, int n);
+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);
#ifdef __cplusplus
}
#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);
-
-
projects / openssl.git / blobdiff