mpi-priv.h revision f9fbec18f5b458b560ecf45d3db8e8bd56bf6942
/*
* mpi-priv.h - Private header file for MPI
* Arbitrary precision integer arithmetic library
*
* NOTE WELL: the content of this header file is NOT part of the "public"
* API for the MPI library, and may change at any time.
* Application programs that use libmpi should NOT include this header file.
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
*
* The Initial Developer of the Original Code is
* Michael J. Fromberger.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Netscape Communications Corporation
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Sun elects to use this software under the MPL license.
*/
#ifndef _MPI_PRIV_H
#define _MPI_PRIV_H
#pragma ident "%Z%%M% %I% %E% SMI"
/* $Id: mpi-priv.h,v 1.20 2005/11/22 07:16:43 relyea%netscape.com Exp $ */
#include "mpi.h"
#ifndef _KERNEL
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#endif /* _KERNEL */
#if MP_DEBUG
#include <stdio.h>
#else
#define DIAG(T,V)
#endif
/* If we aren't using a wired-in logarithm table, we need to include
the math library to get the log() function
*/
/* {{{ s_logv_2[] - log table for 2 in various bases */
#if MP_LOGTAB
/*
A table of the logs of 2 for various bases (the 0 and 1 entries of
this table are meaningless and should not be referenced).
This table is used to compute output lengths for the mp_toradix()
function. Since a number n in radix r takes up about log_r(n)
digits, we estimate the output size by taking the least integer
greater than log_r(n), where:
log_r(n) = log_2(n) * log_r(2)
This table, therefore, is a table of log_r(2) for 2 <= r <= 36,
which are the output bases supported.
*/
extern const float s_logv_2[];
#else
/*
If MP_LOGTAB is not defined, use the math library to compute the
logarithms on the fly. Otherwise, use the table.
Pick which works best for your system.
*/
#include <math.h>
#endif /* if MP_LOGTAB */
/* }}} */
/* {{{ Digit arithmetic macros */
/*
When adding and multiplying digits, the results can be larger than
can be contained in an mp_digit. Thus, an mp_word is used. These
macros mask off the upper and lower digits of the mp_word (the
mp_word may be more than 2 mp_digits wide, but we only concern
ourselves with the low-order 2 mp_digits)
*/
#define MP_MIN(a,b) (((a) < (b)) ? (a) : (b))
#define MP_MAX(a,b) (((a) > (b)) ? (a) : (b))
#define MP_HOWMANY(a,b) (((a) + (b) - 1)/(b))
#define MP_ROUNDUP(a,b) (MP_HOWMANY(a,b) * (b))
/* }}} */
/* {{{ Comparison constants */
#define MP_LT -1
#define MP_EQ 0
#define MP_GT 1
/* }}} */
/* {{{ private function declarations */
/*
If MP_MACRO is false, these will be defined as actual functions;
otherwise, suitable macro definitions will be used. This works
around the fact that ANSI C89 doesn't support an 'inline' keyword
(although I hear C9x will ... about bloody time). At present, the
macro definitions are identical to the function bodies, but they'll
expand in place, instead of generating a function call.
I chose these particular functions to be made into macros because
some profiling showed they are called a lot on a typical workload,
and yet they are primarily housekeeping.
*/
#if MP_MACRO == 0
extern unsigned long mp_allocs;
extern unsigned long mp_frees;
extern unsigned long mp_copies;
#else
/* Even if these are defined as macros, we need to respect the settings
of the MP_MEMSET and MP_MEMCPY configuration options...
*/
#if MP_MEMSET == 0
#else
#endif /* MP_MEMSET */
#if MP_MEMCPY == 0
#else
#endif /* MP_MEMCPY */
#endif /* MP_MACRO */
#if MP_MACRO == 0
#else
#define s_mp_clamp(mp)\
}
#endif /* MP_MACRO */
/* normalize for division */
/* unsigned digit divide */
/* Barrett reduction */
/* a += b * RADIX^offset */
#if MP_SQUARE
#else
#endif
#ifdef NSS_USE_COMBA
#define IS_POWER_OF_2(a) ((a) && !((a) & ((a)-1)))
#endif /* end NSS_USE_COMBA */
/* ------ mpv functions, operate on arrays of digits, not on mp_int's ------ */
#define MPI_ASM_DECL __cdecl
#else
#define MPI_ASM_DECL
#endif
#ifdef MPI_AMD64
/* c = a * b */
#define s_mpv_mul_d(a, a_len, b, c) \
/* c += a * b */
#define s_mpv_mul_d_add(a, a_len, b, c) \
#else
#endif
mp_digit *c);
/* c += a * b * (MP_RADIX ** offset); */
#define s_mp_mul_d_add_offset(a, b, c, off) \
typedef struct {
mp_int N; /* modulus N */
mp_size b; /* R == 2 ** b, also b = # significant bits in N */
/*
* s_mpi_getProcessorLineSize() returns the size in bytes of the cache line
* if a cache exists, or zero if there is no cache. If more than one
* cache line exists, it should return the smallest line size (which is
* usually the L1 cache).
*
* mp_modexp uses this information to make sure that private key information
* isn't being leaked through the cache.
*
* see mpcpucache.c for the implementation.
*/
unsigned long s_mpi_getProcessorLineSize();
/* }}} */
#endif /* _MPI_PRIV_H */