1 /* twister-small-asm.S */
3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * \file twister-small-asm.S
21 * \email daniel.otte@rub.de
24 * \license GPLv3 or later
28 #include "avr-asm-macros.S"
30 /* void twister_small_init(twister_state_t* ctx, uint16_t hashsize_b)*/
33 * param hashsize_b: r22:r23
35 .global twister224_init
41 .global twister256_init
46 .global twister_small_init
75 /*********************************************************************/
76 /* void twister_small_lastBlock(twister_state_t* ctx, void* msg, uint16_t length_b) */
80 * param length_b: r20:r21
90 .global twister_small_lastBlock
91 .global twister224_lastBlock
92 .global twister256_lastBlock
96 twister_small_lastBlock:
111 rcall twister_small_nextBlock
125 sub r19, r18 /* r18: bytes to copy, r19: bytes to clear */
159 rcall twister_small_nextBlock
198 rcall twister_mini_round
201 rcall twister_blank_round