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aes-encrypt-table.c
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Niels Möller authored
contain index values shifted by the size of a word, and with 2 added. This saves some additions in the sparc assembler code. Updates aes-encrypt-table.c and aes-decrypt-table.c. * aes-internal.h (struct aes_table): Renamed the shift_idx field to sparc_idx, as it will be tweaked to improve the sparc code. Also reduced its size to [2][4]. (IDX_FACTOR): Deleted constant. * aes-encrypt-table.c (_aes_encrypt_table): Adapted initializer of sparc_idx. * aes-decrypt-table.c (_aes_decrypt_table): Likewise. * asm.m4: Deleted AES_SIDX2, to match struct aes_table. Rev: src/nettle/aes-decrypt-table.c:1.3 Rev: src/nettle/aes-encrypt-table.c:1.3 Rev: src/nettle/aes-internal.h:1.8
Niels Möller authoredcontain index values shifted by the size of a word, and with 2 added. This saves some additions in the sparc assembler code. Updates aes-encrypt-table.c and aes-decrypt-table.c. * aes-internal.h (struct aes_table): Renamed the shift_idx field to sparc_idx, as it will be tweaked to improve the sparc code. Also reduced its size to [2][4]. (IDX_FACTOR): Deleted constant. * aes-encrypt-table.c (_aes_encrypt_table): Adapted initializer of sparc_idx. * aes-decrypt-table.c (_aes_decrypt_table): Likewise. * asm.m4: Deleted AES_SIDX2, to match struct aes_table. Rev: src/nettle/aes-decrypt-table.c:1.3 Rev: src/nettle/aes-encrypt-table.c:1.3 Rev: src/nettle/aes-internal.h:1.8
desCode.h 10.96 KiB
/* desCode.h
*
* $Id$ */
/* des - fast & portable DES encryption & decryption.
* Copyright (C) 1992 Dana L. How
* Please see the file `descore.README' for the complete copyright notice.
*/
#include "des.h"
extern const uint32_t des_keymap[];
extern const uint32_t des_bigmap[];
/* optional customization:
* the idea here is to alter the code so it will still run correctly
* on any machine, but the quickest on the specific machine in mind.
* note that these silly tweaks can give you a 15%-20% speed improvement
* on the sparc -- it's probably even more significant on the 68000. */
/* take care of machines with incredibly few registers */
#if defined(i386)
#define REGISTER /* only x, y, z will be declared register */
#else
#define REGISTER register
#endif /* i386 */
/* is auto inc/dec faster than 7bit unsigned indexing? */
#if defined(vax) || defined(mc68000)
#define FIXR r += 32;
#define FIXS s += 8;
#define PREV(v,o) *--v
#define NEXT(v,o) *v++
#else
#define FIXR
#define FIXS
#define PREV(v,o) v[o]
#define NEXT(v,o) v[o]
#endif
/* if no machine type, default is indexing, 6 registers and cheap literals */
#if !defined(i386) && !defined(vax) && !defined(mc68000) && !defined(sparc)
#define vax
#endif
/* handle a compiler which can't reallocate registers */
/* The BYTE type is used as parameter for the encrypt/decrypt functions.
* It's pretty bad to have the function prototypes depend on
* a macro definition that the users of the function doesn't
* know about. /Niels */
#if 0 /* didn't feel like deleting */
#define SREGFREE ; s = (uint8_t *) D
#define DEST s
#define D m0
#define BYTE uint32_t
#else
#define SREGFREE
#define DEST d
#define D d
#define BYTE uint8_t
#endif
/* handle constants in the optimal way for 386 & vax */
/* 386: we declare 3 register variables (see above) and use 3 more variables;
* vax: we use 6 variables, all declared register;
* we assume address literals are cheap & unrestricted;
* we assume immediate constants are cheap & unrestricted. */
#if defined(i386) || defined(vax)
#define MQ0 des_bigmap