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/*
* Copyright (c) 1999 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef LBNPPC_H
#define LBNPPC_H
/*
* Cylink Corporation © 1998
*
* This software is licensed by Cylink to the Internet Software Consortium to
* promote implementation of royalty free public key cryptography within IETF
* standards. Cylink wishes to expressly thank the contributions of Dr.
* Martin Hellman, Whitfield Diffie, Ralph Merkle and Stanford University for
* their contributions to Internet Security. In accordance with the terms of
* this license, ISC is authorized to distribute and sublicense this software
* for the practice of IETF standards.
*
* The software includes BigNum, written by Colin Plumb and licensed by Philip
* R. Zimmermann for royalty free use and distribution with Cylink's
* software. Use of BigNum as a stand alone product or component is
* specifically prohibited.
*
* Disclaimer of All Warranties. THIS SOFTWARE IS BEING PROVIDED "AS IS",
* WITHOUT ANY EXPRESSED OR IMPLIED WARRANTY OF ANY KIND WHATSOEVER. IN
* PARTICULAR, WITHOUT LIMITATION ON THE GENERALITY OF THE FOREGOING, CYLINK
* MAKES NO REPRESENTATION OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*
* Cylink or its representatives shall not be liable for tort, indirect,
* special or consequential damages such as loss of profits or loss of
* goodwill from the use or inability to use the software for any purpose or
* for any reason whatsoever.
*
* EXPORT LAW: Export of the Foundations Suite may be subject to compliance
* with the rules and regulations promulgated from time to time by the Bureau
* of Export Administration, United States Department of Commerce, which
* restrict the export and re-export of certain products and technical data.
* If the export of the Foundations Suite is controlled under such rules and
* regulations, then the Foundations Suite shall not be exported or
* re-exported, directly or indirectly, (a) without all export or re-export
* licenses and governmental approvals required by any applicable laws, or (b)
* in violation of any applicable prohibition against the export or re-export
* of any part of the Foundations Suite. All export licenses for software
* containing the Foundations Suite are the sole responsibility of the licensee.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Assembly-language routines for the Power PC processor.
* Annoyingly, the Power PC does not have 64/32->32 bit divide,
* so the C code should be reasonably fast. But it does have
* 32x32->64-bit multiplies, and these routines provide access
* to that.
*
* In versions of CodeWarrior before 8.0, there was no PPC assembler,
* so a kludged-up one in CPP is used. This requires casting an
* array of unsigneds to function pointer type, and a function pointer
* is not a pointer to the code, but rather a pointer to a (code,TOC)
* pointer pair which we fake up.
*
* CodeWarrior 8.0 supports PCC assembly, which is used directly.
*/
/*
* Bignums are stored in arrays of 32-bit words, and the least
* significant 32-bit word has the lowest address, thus "little-endian".
* The C code is slightly more efficient this way, so unless the
* processor cares (the PowerPC, like most RISCs, doesn't), it is
* best to use BN_LITTLE_ENDIAN.
* Note that this has NOTHING to do with the order of bytes within a 32-bit
* word; the math library is insensitive to that.
*/
#define BN_LITTLE_ENDIAN 1
typedef unsigned bnword32;
#define BNWORD32 bnword32
#if __MWERKS__ < 0x800
/* Shared transition vector array */
extern unsigned const * const lbnPPC_tv[];
/* A function pointer on the PowerPC is a pointer to a transition vector */
#define lbnMulN1_32 \
((void (*)(bnword32 *, bnword32 const *, unsigned, bnword32))(lbnPPC_tv+0))
#define lbnMulAdd1_32 \
((bnword32 (*)(bnword32 *, bnword32 const *, unsigned, bnword32))(lbnPPC_tv+1))
#define lbnMulSub1_32 \
((bnword32 (*)(bnword32 *, bnword32 const *, unsigned, bnword32))(lbnPPC_tv+2))
#else /* __MWERKS__ >= 0x800 */
void lbnMulN1_32(bnword32 *, bnword32 const *, unsigned, bnword32);
#define lbnMulN1_32 lbnMulN1_32
bnword32 lbnMulAdd1_32(bnword32 *, bnword32 const *, unsigned, bnword32);
#define lbnMulAdd1_32 lbnMulAdd1_32
bnword32 lbnMulSub1_32(bnword32 *, bnword32 const *, unsigned, bnword32);
#define lbnMulSub1_32 lbnMulSub1_32
#endif /* __MWERKS__ >= 0x800 */
#endif /* LBNPPC_H */
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