/* * Intel SHA Extensions optimized implementation of a SHA-1 update function * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2015 Intel Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * Contact Information: * Sean Gulley <sean.m.gulley@intel.com> * Tim Chen <tim.c.chen@linux.intel.com> * * BSD LICENSE * * Copyright(c) 2015 Intel Corporation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
*/
/* * Intel SHA Extensions optimized implementation of a SHA-1 block function * * This function takes a pointer to the current SHA-1 state, a pointer to the * input data, and the number of 64-byte blocks to process. The number of * blocks to process is assumed to be nonzero. Once all blocks have been * processed, the state is updated with the new state. This function only * processes complete blocks. State initialization, buffering of partial * blocks, and digest finalization are expected to be handled elsewhere. * * void sha1_ni_transform(struct sha1_block_state *state, * const u8 *data, size_t nblocks)
*/
.text
SYM_FUNC_START(sha1_ni_transform)
/* Load the initial state from STATE_PTR. */
pxor E0, E0
pinsrd $3, 16(STATE_PTR), E0
movdqu (STATE_PTR), ABCD
pshufd $0x1B, ABCD, ABCD
movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK
.Lnext_block: /* Save the state for addition after the rounds. */
movdqa E0, E0_SAVED
movdqa ABCD, ABCD_SAVED
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