204 lines
5 KiB
NASM
204 lines
5 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Copyright(c) 2011-2014 Intel Corporation All rights reserved.
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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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; * 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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;;;
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;;; gf_vect_dot_prod_avx2(len, vec, *g_tbls, **buffs, *dest);
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;;;
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;;; Author: Gregory Tucker
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%ifidn __OUTPUT_FORMAT__, elf64
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%define arg0 rdi
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%define arg1 rsi
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%define arg2 rdx
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%define arg3 rcx
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%define arg4 r8
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%define arg5 r9
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%define tmp r11
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%define tmp.w r11d
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%define tmp.b r11b
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%define tmp2 r10
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%define tmp3 r9
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%define return rax
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%define PS 8
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%define func(x) x:
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%define FUNC_SAVE
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%define FUNC_RESTORE
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%endif
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%ifidn __OUTPUT_FORMAT__, win64
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%define arg0 rcx
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%define arg1 rdx
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%define arg2 r8
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%define arg3 r9
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%define arg4 r12 ; must be saved and loaded
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%define tmp r11
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%define tmp.w r11d
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%define tmp.b r11b
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%define tmp2 r10
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%define tmp3 rdi ; must be saved and loaded
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%define return rax
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%define PS 8
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%define frame_size 2*8
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%define arg(x) [rsp + frame_size + PS + PS*x]
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%define func(x) proc_frame x
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%macro FUNC_SAVE 0
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rex_push_reg r12
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push_reg rdi
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end_prolog
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mov arg4, arg(4)
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%endmacro
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%macro FUNC_RESTORE 0
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pop rdi
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pop r12
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%endmacro
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%endif
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%define len arg0
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%define vec arg1
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%define mul_array arg2
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%define src arg3
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%define dest arg4
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%define vec_i tmp2
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%define ptr tmp3
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%define pos return
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%ifndef EC_ALIGNED_ADDR
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;;; Use Un-aligned load/store
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%define XLDR vmovdqu
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%define XSTR vmovdqu
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%else
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;;; Use Non-temporal load/stor
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%ifdef NO_NT_LDST
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%define XLDR vmovdqa
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%define XSTR vmovdqa
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%else
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%define XLDR vmovntdqa
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%define XSTR vmovntdq
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%endif
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%endif
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default rel
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[bits 64]
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section .text
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%define xmask0f ymm3
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%define xmask0fx xmm3
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%define xgft_lo ymm4
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%define xgft_hi ymm5
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%define x0 ymm0
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%define xtmpa ymm1
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%define xp ymm2
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align 16
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global gf_vect_dot_prod_avx2:function
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func(gf_vect_dot_prod_avx2)
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FUNC_SAVE
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sub len, 32
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jl .return_fail
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xor pos, pos
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mov tmp.b, 0x0f
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vpinsrb xmask0fx, xmask0fx, tmp.w, 0
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vpbroadcastb xmask0f, xmask0fx ;Construct mask 0x0f0f0f...
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.loop32:
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vpxor xp, xp
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mov tmp, mul_array
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xor vec_i, vec_i
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.next_vect:
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mov ptr, [src+vec_i*PS]
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vmovdqu xgft_lo, [tmp] ;Load array Cx{00}, Cx{01}, Cx{02}, ...
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; " Cx{00}, Cx{10}, Cx{20}, ... , Cx{f0}
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vperm2i128 xgft_hi, xgft_lo, xgft_lo, 0x11 ; swapped to hi | hi
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vperm2i128 xgft_lo, xgft_lo, xgft_lo, 0x00 ; swapped to lo | lo
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XLDR x0, [ptr+pos] ;Get next source vector
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add tmp, 32
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add vec_i, 1
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vpand xtmpa, x0, xmask0f ;Mask low src nibble in bits 4-0
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vpsraw x0, x0, 4 ;Shift to put high nibble into bits 4-0
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vpand x0, x0, xmask0f ;Mask high src nibble in bits 4-0
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vpshufb xgft_hi, xgft_hi, x0 ;Lookup mul table of high nibble
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vpshufb xgft_lo, xgft_lo, xtmpa ;Lookup mul table of low nibble
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vpxor xgft_hi, xgft_hi, xgft_lo ;GF add high and low partials
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vpxor xp, xp, xgft_hi ;xp += partial
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cmp vec_i, vec
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jl .next_vect
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XSTR [dest+pos], xp
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add pos, 32 ;Loop on 32 bytes at a time
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cmp pos, len
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jle .loop32
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lea tmp, [len + 32]
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cmp pos, tmp
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je .return_pass
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;; Tail len
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mov pos, len ;Overlapped offset length-32
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jmp .loop32 ;Do one more overlap pass
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.return_pass:
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mov return, 0
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FUNC_RESTORE
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ret
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.return_fail:
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mov return, 1
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FUNC_RESTORE
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ret
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endproc_frame
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section .data
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%macro slversion 4
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global %1_slver_%2%3%4
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global %1_slver
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%1_slver:
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%1_slver_%2%3%4:
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dw 0x%4
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db 0x%3, 0x%2
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%endmacro
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;;; func core, ver, snum
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slversion gf_vect_dot_prod_avx2, 04, 03, 0190
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