| /* |
| * Flush routine for SHA512 multibuffer |
| * |
| * 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) 2016 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: |
| * Megha Dey <megha.dey@linux.intel.com> |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2016 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. |
| */ |
| |
| #include <linux/linkage.h> |
| #include <asm/frame.h> |
| #include "sha512_mb_mgr_datastruct.S" |
| |
| .extern sha512_x4_avx2 |
| |
| # LINUX register definitions |
| #define arg1 %rdi |
| #define arg2 %rsi |
| |
| # idx needs to be other than arg1, arg2, rbx, r12 |
| #define idx %rdx |
| |
| # Common definitions |
| #define state arg1 |
| #define job arg2 |
| #define len2 arg2 |
| |
| #define unused_lanes %rbx |
| #define lane_data %rbx |
| #define tmp2 %rbx |
| |
| #define job_rax %rax |
| #define tmp1 %rax |
| #define size_offset %rax |
| #define tmp %rax |
| #define start_offset %rax |
| |
| #define tmp3 arg1 |
| |
| #define extra_blocks arg2 |
| #define p arg2 |
| |
| #define tmp4 %r8 |
| #define lens0 %r8 |
| |
| #define lens1 %r9 |
| #define lens2 %r10 |
| #define lens3 %r11 |
| |
| .macro LABEL prefix n |
| \prefix\n\(): |
| .endm |
| |
| .macro JNE_SKIP i |
| jne skip_\i |
| .endm |
| |
| .altmacro |
| .macro SET_OFFSET _offset |
| offset = \_offset |
| .endm |
| .noaltmacro |
| |
| # JOB* sha512_mb_mgr_flush_avx2(MB_MGR *state) |
| # arg 1 : rcx : state |
| ENTRY(sha512_mb_mgr_flush_avx2) |
| FRAME_BEGIN |
| push %rbx |
| |
| # If bit (32+3) is set, then all lanes are empty |
| mov _unused_lanes(state), unused_lanes |
| bt $32+7, unused_lanes |
| jc return_null |
| |
| # find a lane with a non-null job |
| xor idx, idx |
| offset = (_ldata + 1*_LANE_DATA_size + _job_in_lane) |
| cmpq $0, offset(state) |
| cmovne one(%rip), idx |
| offset = (_ldata + 2*_LANE_DATA_size + _job_in_lane) |
| cmpq $0, offset(state) |
| cmovne two(%rip), idx |
| offset = (_ldata + 3*_LANE_DATA_size + _job_in_lane) |
| cmpq $0, offset(state) |
| cmovne three(%rip), idx |
| |
| # copy idx to empty lanes |
| copy_lane_data: |
| offset = (_args + _data_ptr) |
| mov offset(state,idx,8), tmp |
| |
| I = 0 |
| .rep 4 |
| offset = (_ldata + I * _LANE_DATA_size + _job_in_lane) |
| cmpq $0, offset(state) |
| .altmacro |
| JNE_SKIP %I |
| offset = (_args + _data_ptr + 8*I) |
| mov tmp, offset(state) |
| offset = (_lens + 8*I +4) |
| movl $0xFFFFFFFF, offset(state) |
| LABEL skip_ %I |
| I = (I+1) |
| .noaltmacro |
| .endr |
| |
| # Find min length |
| mov _lens + 0*8(state),lens0 |
| mov lens0,idx |
| mov _lens + 1*8(state),lens1 |
| cmp idx,lens1 |
| cmovb lens1,idx |
| mov _lens + 2*8(state),lens2 |
| cmp idx,lens2 |
| cmovb lens2,idx |
| mov _lens + 3*8(state),lens3 |
| cmp idx,lens3 |
| cmovb lens3,idx |
| mov idx,len2 |
| and $0xF,idx |
| and $~0xFF,len2 |
| jz len_is_0 |
| |
| sub len2, lens0 |
| sub len2, lens1 |
| sub len2, lens2 |
| sub len2, lens3 |
| shr $32,len2 |
| mov lens0, _lens + 0*8(state) |
| mov lens1, _lens + 1*8(state) |
| mov lens2, _lens + 2*8(state) |
| mov lens3, _lens + 3*8(state) |
| |
| # "state" and "args" are the same address, arg1 |
| # len is arg2 |
| call sha512_x4_avx2 |
| # state and idx are intact |
| |
| len_is_0: |
| # process completed job "idx" |
| imul $_LANE_DATA_size, idx, lane_data |
| lea _ldata(state, lane_data), lane_data |
| |
| mov _job_in_lane(lane_data), job_rax |
| movq $0, _job_in_lane(lane_data) |
| movl $STS_COMPLETED, _status(job_rax) |
| mov _unused_lanes(state), unused_lanes |
| shl $8, unused_lanes |
| or idx, unused_lanes |
| mov unused_lanes, _unused_lanes(state) |
| |
| movl $0xFFFFFFFF, _lens+4(state, idx, 8) |
| |
| vmovq _args_digest+0*32(state, idx, 8), %xmm0 |
| vpinsrq $1, _args_digest+1*32(state, idx, 8), %xmm0, %xmm0 |
| vmovq _args_digest+2*32(state, idx, 8), %xmm1 |
| vpinsrq $1, _args_digest+3*32(state, idx, 8), %xmm1, %xmm1 |
| vmovq _args_digest+4*32(state, idx, 8), %xmm2 |
| vpinsrq $1, _args_digest+5*32(state, idx, 8), %xmm2, %xmm2 |
| vmovq _args_digest+6*32(state, idx, 8), %xmm3 |
| vpinsrq $1, _args_digest+7*32(state, idx, 8), %xmm3, %xmm3 |
| |
| vmovdqu %xmm0, _result_digest(job_rax) |
| vmovdqu %xmm1, _result_digest+1*16(job_rax) |
| vmovdqu %xmm2, _result_digest+2*16(job_rax) |
| vmovdqu %xmm3, _result_digest+3*16(job_rax) |
| |
| return: |
| pop %rbx |
| FRAME_END |
| ret |
| |
| return_null: |
| xor job_rax, job_rax |
| jmp return |
| ENDPROC(sha512_mb_mgr_flush_avx2) |
| .align 16 |
| |
| ENTRY(sha512_mb_mgr_get_comp_job_avx2) |
| push %rbx |
| |
| mov _unused_lanes(state), unused_lanes |
| bt $(32+7), unused_lanes |
| jc .return_null |
| |
| # Find min length |
| mov _lens(state),lens0 |
| mov lens0,idx |
| mov _lens+1*8(state),lens1 |
| cmp idx,lens1 |
| cmovb lens1,idx |
| mov _lens+2*8(state),lens2 |
| cmp idx,lens2 |
| cmovb lens2,idx |
| mov _lens+3*8(state),lens3 |
| cmp idx,lens3 |
| cmovb lens3,idx |
| test $~0xF,idx |
| jnz .return_null |
| and $0xF,idx |
| |
| #process completed job "idx" |
| imul $_LANE_DATA_size, idx, lane_data |
| lea _ldata(state, lane_data), lane_data |
| |
| mov _job_in_lane(lane_data), job_rax |
| movq $0, _job_in_lane(lane_data) |
| movl $STS_COMPLETED, _status(job_rax) |
| mov _unused_lanes(state), unused_lanes |
| shl $8, unused_lanes |
| or idx, unused_lanes |
| mov unused_lanes, _unused_lanes(state) |
| |
| movl $0xFFFFFFFF, _lens+4(state, idx, 8) |
| |
| vmovq _args_digest(state, idx, 8), %xmm0 |
| vpinsrq $1, _args_digest+1*32(state, idx, 8), %xmm0, %xmm0 |
| vmovq _args_digest+2*32(state, idx, 8), %xmm1 |
| vpinsrq $1, _args_digest+3*32(state, idx, 8), %xmm1, %xmm1 |
| vmovq _args_digest+4*32(state, idx, 8), %xmm2 |
| vpinsrq $1, _args_digest+5*32(state, idx, 8), %xmm2, %xmm2 |
| vmovq _args_digest+6*32(state, idx, 8), %xmm3 |
| vpinsrq $1, _args_digest+7*32(state, idx, 8), %xmm3, %xmm3 |
| |
| vmovdqu %xmm0, _result_digest+0*16(job_rax) |
| vmovdqu %xmm1, _result_digest+1*16(job_rax) |
| vmovdqu %xmm2, _result_digest+2*16(job_rax) |
| vmovdqu %xmm3, _result_digest+3*16(job_rax) |
| |
| pop %rbx |
| |
| ret |
| |
| .return_null: |
| xor job_rax, job_rax |
| pop %rbx |
| ret |
| ENDPROC(sha512_mb_mgr_get_comp_job_avx2) |
| |
| .section .rodata.cst8.one, "aM", @progbits, 8 |
| .align 8 |
| one: |
| .quad 1 |
| |
| .section .rodata.cst8.two, "aM", @progbits, 8 |
| .align 8 |
| two: |
| .quad 2 |
| |
| .section .rodata.cst8.three, "aM", @progbits, 8 |
| .align 8 |
| three: |
| .quad 3 |
