forked from Minki/linux
2249cbb53e
This patch introduces the routines used to submit and flush buffers belonging to SHA1 crypto jobs to the SHA1 multibuffer algorithm. It is implemented mostly in assembly optimized with AVX2 instructions. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
328 lines
8.8 KiB
ArmAsm
328 lines
8.8 KiB
ArmAsm
/*
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* Flush routine for SHA1 multibuffer
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2014 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* Contact Information:
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* James Guilford <james.guilford@intel.com>
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* Tim Chen <tim.c.chen@linux.intel.com>
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*
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* BSD LICENSE
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*
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* Copyright(c) 2014 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/linkage.h>
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#include "sha1_mb_mgr_datastruct.S"
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.extern sha1_x8_avx2
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# LINUX register definitions
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#define arg1 %rdi
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#define arg2 %rsi
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# Common definitions
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#define state arg1
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#define job arg2
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#define len2 arg2
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# idx must be a register not clobbered by sha1_x8_avx2
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#define idx %r8
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#define DWORD_idx %r8d
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#define unused_lanes %rbx
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#define lane_data %rbx
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#define tmp2 %rbx
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#define tmp2_w %ebx
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#define job_rax %rax
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#define tmp1 %rax
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#define size_offset %rax
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#define tmp %rax
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#define start_offset %rax
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#define tmp3 %arg1
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#define extra_blocks %arg2
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#define p %arg2
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# STACK_SPACE needs to be an odd multiple of 8
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_XMM_SAVE_SIZE = 10*16
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_GPR_SAVE_SIZE = 8*8
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_ALIGN_SIZE = 8
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_XMM_SAVE = 0
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_GPR_SAVE = _XMM_SAVE + _XMM_SAVE_SIZE
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STACK_SPACE = _GPR_SAVE + _GPR_SAVE_SIZE + _ALIGN_SIZE
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.macro LABEL prefix n
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\prefix\n\():
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.endm
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.macro JNE_SKIP i
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jne skip_\i
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.endm
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.altmacro
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.macro SET_OFFSET _offset
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offset = \_offset
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.endm
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.noaltmacro
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# JOB* sha1_mb_mgr_flush_avx2(MB_MGR *state)
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# arg 1 : rcx : state
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ENTRY(sha1_mb_mgr_flush_avx2)
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mov %rsp, %r10
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sub $STACK_SPACE, %rsp
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and $~31, %rsp
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mov %rbx, _GPR_SAVE(%rsp)
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mov %r10, _GPR_SAVE+8*1(%rsp) #save rsp
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mov %rbp, _GPR_SAVE+8*3(%rsp)
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mov %r12, _GPR_SAVE+8*4(%rsp)
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mov %r13, _GPR_SAVE+8*5(%rsp)
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mov %r14, _GPR_SAVE+8*6(%rsp)
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mov %r15, _GPR_SAVE+8*7(%rsp)
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# If bit (32+3) is set, then all lanes are empty
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mov _unused_lanes(state), unused_lanes
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bt $32+3, unused_lanes
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jc return_null
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# find a lane with a non-null job
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xor idx, idx
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offset = (_ldata + 1 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne one(%rip), idx
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offset = (_ldata + 2 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne two(%rip), idx
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offset = (_ldata + 3 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne three(%rip), idx
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offset = (_ldata + 4 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne four(%rip), idx
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offset = (_ldata + 5 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne five(%rip), idx
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offset = (_ldata + 6 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne six(%rip), idx
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offset = (_ldata + 7 * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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cmovne seven(%rip), idx
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# copy idx to empty lanes
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copy_lane_data:
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offset = (_args + _data_ptr)
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mov offset(state,idx,8), tmp
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I = 0
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.rep 8
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offset = (_ldata + I * _LANE_DATA_size + _job_in_lane)
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cmpq $0, offset(state)
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.altmacro
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JNE_SKIP %I
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offset = (_args + _data_ptr + 8*I)
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mov tmp, offset(state)
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offset = (_lens + 4*I)
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movl $0xFFFFFFFF, offset(state)
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LABEL skip_ %I
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I = (I+1)
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.noaltmacro
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.endr
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# Find min length
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vmovdqa _lens+0*16(state), %xmm0
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vmovdqa _lens+1*16(state), %xmm1
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vpminud %xmm1, %xmm0, %xmm2 # xmm2 has {D,C,B,A}
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vpalignr $8, %xmm2, %xmm3, %xmm3 # xmm3 has {x,x,D,C}
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vpminud %xmm3, %xmm2, %xmm2 # xmm2 has {x,x,E,F}
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vpalignr $4, %xmm2, %xmm3, %xmm3 # xmm3 has {x,x,x,E}
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vpminud %xmm3, %xmm2, %xmm2 # xmm2 has min value in low dword
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vmovd %xmm2, DWORD_idx
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mov idx, len2
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and $0xF, idx
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shr $4, len2
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jz len_is_0
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vpand clear_low_nibble(%rip), %xmm2, %xmm2
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vpshufd $0, %xmm2, %xmm2
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vpsubd %xmm2, %xmm0, %xmm0
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vpsubd %xmm2, %xmm1, %xmm1
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vmovdqa %xmm0, _lens+0*16(state)
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vmovdqa %xmm1, _lens+1*16(state)
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# "state" and "args" are the same address, arg1
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# len is arg2
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call sha1_x8_avx2
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# state and idx are intact
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len_is_0:
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# process completed job "idx"
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imul $_LANE_DATA_size, idx, lane_data
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lea _ldata(state, lane_data), lane_data
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mov _job_in_lane(lane_data), job_rax
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movq $0, _job_in_lane(lane_data)
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movl $STS_COMPLETED, _status(job_rax)
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mov _unused_lanes(state), unused_lanes
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shl $4, unused_lanes
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or idx, unused_lanes
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mov unused_lanes, _unused_lanes(state)
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movl $0xFFFFFFFF, _lens(state, idx, 4)
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vmovd _args_digest(state , idx, 4) , %xmm0
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vpinsrd $1, _args_digest+1*32(state, idx, 4), %xmm0, %xmm0
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vpinsrd $2, _args_digest+2*32(state, idx, 4), %xmm0, %xmm0
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vpinsrd $3, _args_digest+3*32(state, idx, 4), %xmm0, %xmm0
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movl _args_digest+4*32(state, idx, 4), tmp2_w
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vmovdqu %xmm0, _result_digest(job_rax)
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offset = (_result_digest + 1*16)
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mov tmp2_w, offset(job_rax)
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return:
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mov _GPR_SAVE(%rsp), %rbx
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mov _GPR_SAVE+8*1(%rsp), %r10 #saved rsp
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mov _GPR_SAVE+8*3(%rsp), %rbp
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mov _GPR_SAVE+8*4(%rsp), %r12
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mov _GPR_SAVE+8*5(%rsp), %r13
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mov _GPR_SAVE+8*6(%rsp), %r14
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mov _GPR_SAVE+8*7(%rsp), %r15
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mov %r10, %rsp
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ret
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return_null:
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xor job_rax, job_rax
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jmp return
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ENDPROC(sha1_mb_mgr_flush_avx2)
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#################################################################
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.align 16
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ENTRY(sha1_mb_mgr_get_comp_job_avx2)
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push %rbx
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## if bit 32+3 is set, then all lanes are empty
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mov _unused_lanes(state), unused_lanes
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bt $(32+3), unused_lanes
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jc .return_null
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# Find min length
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vmovdqa _lens(state), %xmm0
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vmovdqa _lens+1*16(state), %xmm1
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vpminud %xmm1, %xmm0, %xmm2 # xmm2 has {D,C,B,A}
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vpalignr $8, %xmm2, %xmm3, %xmm3 # xmm3 has {x,x,D,C}
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vpminud %xmm3, %xmm2, %xmm2 # xmm2 has {x,x,E,F}
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vpalignr $4, %xmm2, %xmm3, %xmm3 # xmm3 has {x,x,x,E}
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vpminud %xmm3, %xmm2, %xmm2 # xmm2 has min value in low dword
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vmovd %xmm2, DWORD_idx
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test $~0xF, idx
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jnz .return_null
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# process completed job "idx"
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imul $_LANE_DATA_size, idx, lane_data
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lea _ldata(state, lane_data), lane_data
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mov _job_in_lane(lane_data), job_rax
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movq $0, _job_in_lane(lane_data)
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movl $STS_COMPLETED, _status(job_rax)
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mov _unused_lanes(state), unused_lanes
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shl $4, unused_lanes
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or idx, unused_lanes
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mov unused_lanes, _unused_lanes(state)
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movl $0xFFFFFFFF, _lens(state, idx, 4)
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vmovd _args_digest(state, idx, 4), %xmm0
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vpinsrd $1, _args_digest+1*32(state, idx, 4), %xmm0, %xmm0
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vpinsrd $2, _args_digest+2*32(state, idx, 4), %xmm0, %xmm0
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vpinsrd $3, _args_digest+3*32(state, idx, 4), %xmm0, %xmm0
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movl _args_digest+4*32(state, idx, 4), tmp2_w
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vmovdqu %xmm0, _result_digest(job_rax)
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movl tmp2_w, _result_digest+1*16(job_rax)
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pop %rbx
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ret
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.return_null:
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xor job_rax, job_rax
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pop %rbx
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ret
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ENDPROC(sha1_mb_mgr_get_comp_job_avx2)
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.data
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.align 16
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clear_low_nibble:
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.octa 0x000000000000000000000000FFFFFFF0
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one:
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.quad 1
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two:
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.quad 2
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three:
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.quad 3
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four:
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.quad 4
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five:
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.quad 5
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six:
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.quad 6
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seven:
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.quad 7
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