crypto: powerpc/aes - register defines

Define some register aliases for better readability.

Signed-off-by: Markus Stockhausen <stockhausen@collogia.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Markus Stockhausen 2015-02-22 09:59:38 +01:00 committed by Herbert Xu
parent 0052a65413
commit 74f2dc2041
1 changed files with 42 additions and 0 deletions

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/*
* Common registers for PPC AES implementation
*
* Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
*/
#define rKS r0 /* copy of en-/decryption key pointer */
#define rDP r3 /* destination pointer */
#define rSP r4 /* source pointer */
#define rKP r5 /* pointer to en-/decryption key pointer */
#define rRR r6 /* en-/decryption rounds */
#define rLN r7 /* length of data to be processed */
#define rIP r8 /* potiner to IV (CBC/CTR/XTS modes) */
#define rKT r9 /* pointer to tweak key (XTS mode) */
#define rT0 r11 /* pointers to en-/decrpytion tables */
#define rT1 r10
#define rD0 r9 /* data */
#define rD1 r14
#define rD2 r12
#define rD3 r15
#define rW0 r16 /* working registers */
#define rW1 r17
#define rW2 r18
#define rW3 r19
#define rW4 r20
#define rW5 r21
#define rW6 r22
#define rW7 r23
#define rI0 r24 /* IV */
#define rI1 r25
#define rI2 r26
#define rI3 r27
#define rG0 r28 /* endian reversed tweak (XTS mode) */
#define rG1 r29
#define rG2 r30
#define rG3 r31