237 lines
6.1 KiB
NASM
237 lines
6.1 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Copyright(c) 2011-2015 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_2vect_mad_avx(len, vec, vec_i, mul_array, src, dest);
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;;;
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%include "reg_sizes.asm"
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%define PS 8
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%ifidn __OUTPUT_FORMAT__, win64
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%define arg0 rcx
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%define arg0.w ecx
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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
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%define arg5 r15
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%define tmp r11
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%define tmp2 r10
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%define return rax
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%define return.w eax
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%define stack_size 16*9 + 3*8
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%define arg(x) [rsp + stack_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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sub rsp, stack_size
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movdqa [rsp+16*0],xmm6
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movdqa [rsp+16*1],xmm7
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movdqa [rsp+16*2],xmm8
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movdqa [rsp+16*3],xmm9
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movdqa [rsp+16*4],xmm10
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movdqa [rsp+16*5],xmm11
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movdqa [rsp+16*6],xmm12
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movdqa [rsp+16*7],xmm13
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movdqa [rsp+16*8],xmm14
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save_reg r12, 9*16 + 0*8
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save_reg r15, 9*16 + 1*8
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end_prolog
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mov arg4, arg(4)
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mov arg5, arg(5)
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%endmacro
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%macro FUNC_RESTORE 0
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movdqa xmm6, [rsp+16*0]
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movdqa xmm7, [rsp+16*1]
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movdqa xmm8, [rsp+16*2]
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movdqa xmm9, [rsp+16*3]
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movdqa xmm10, [rsp+16*4]
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movdqa xmm11, [rsp+16*5]
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movdqa xmm12, [rsp+16*6]
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movdqa xmm13, [rsp+16*7]
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movdqa xmm14, [rsp+16*8]
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mov r12, [rsp + 9*16 + 0*8]
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mov r15, [rsp + 9*16 + 1*8]
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add rsp, stack_size
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%endmacro
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%elifidn __OUTPUT_FORMAT__, elf64
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%define arg0 rdi
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%define arg0.w edi
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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 tmp2 r10
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%define return rax
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%define return.w eax
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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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;;; gf_2vect_mad_avx(len, vec, vec_i, mul_array, src, dest)
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%define len arg0
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%define len.w arg0.w
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%define vec arg1
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%define vec_i arg2
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%define mul_array arg3
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%define src arg4
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%define dest1 arg5
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%define pos return
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%define pos.w return.w
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%define dest2 tmp2
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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 xmm14
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%define xgft1_lo xmm13
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%define xgft1_hi xmm12
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%define xgft2_lo xmm11
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%define xgft2_hi xmm10
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%define x0 xmm0
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%define xtmpa xmm1
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%define xtmph1 xmm2
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%define xtmpl1 xmm3
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%define xtmph2 xmm4
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%define xtmpl2 xmm5
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%define xd1 xmm6
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%define xd2 xmm7
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%define xtmpd1 xmm8
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%define xtmpd2 xmm9
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align 16
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global gf_2vect_mad_avx:function
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func(gf_2vect_mad_avx)
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FUNC_SAVE
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sub len, 16
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jl .return_fail
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xor pos, pos
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vmovdqa xmask0f, [mask0f] ;Load mask of lower nibble in each byte
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sal vec_i, 5 ;Multiply by 32
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sal vec, 5
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lea tmp, [mul_array + vec_i]
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vmovdqu xgft1_lo, [tmp] ;Load array Ax{00}, Ax{01}, Ax{02}, ...
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vmovdqu xgft1_hi, [tmp+16] ; " Ax{00}, Ax{10}, Ax{20}, ... , Ax{f0}
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vmovdqu xgft2_lo, [tmp+vec] ;Load array Bx{00}, Bx{01}, Bx{02}, ...
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vmovdqu xgft2_hi, [tmp+vec+16] ; " Bx{00}, Bx{10}, Bx{20}, ... , Bx{f0}
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mov dest2, [dest1+PS]
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mov dest1, [dest1]
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XLDR xtmpd1, [dest1+len] ;backup the last 16 bytes in dest
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XLDR xtmpd2, [dest2+len] ;backup the last 16 bytes in dest
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.loop16:
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XLDR xd1, [dest1+pos] ;Get next dest vector
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XLDR xd2, [dest2+pos] ;Get next dest vector
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.loop16_overlap:
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XLDR x0, [src+pos] ;Get next source vector
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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 xtmph1, xgft1_hi, x0 ;Lookup mul table of high nibble
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vpshufb xtmpl1, xgft1_lo, xtmpa ;Lookup mul table of low nibble
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vpxor xtmph1, xtmph1, xtmpl1 ;GF add high and low partials
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vpxor xd1, xd1, xtmph1 ;xd1 += partial
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vpshufb xtmph2, xgft2_hi, x0 ;Lookup mul table of high nibble
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vpshufb xtmpl2, xgft2_lo, xtmpa ;Lookup mul table of low nibble
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vpxor xtmph2, xtmph2, xtmpl2 ;GF add high and low partials
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vpxor xd2, xd2, xtmph2 ;xd2 += partial
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XSTR [dest1+pos], xd1
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XSTR [dest2+pos], xd2
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add pos, 16 ;Loop on 16 bytes at a time
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cmp pos, len
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jle .loop16
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lea tmp, [len + 16]
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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-16
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vmovdqa xd1, xtmpd1 ;Restore xd1
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vmovdqa xd2, xtmpd2 ;Restore xd2
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jmp .loop16_overlap ;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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align 16
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mask0f: dq 0x0f0f0f0f0f0f0f0f, 0x0f0f0f0f0f0f0f0f
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;;; func core, ver, snum
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slversion gf_2vect_mad_avx, 02, 01, 0204
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