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2e212f28fa
Change-Id: I9ee86a3e32876d3860477c8365fc459d94a8920e Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
255 lines
7.4 KiB
NASM
255 lines
7.4 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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;;; Optimized pq of N source vectors using AVX
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;;; int pq_gen_avx(int vects, int len, void **array)
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;;; Generates P+Q parity vector from N (vects-2) sources in array of pointers
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;;; (**array). Last two pointers are the P and Q destinations respectively.
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;;; Vectors must be aligned to 16 bytes. Length must be 16 byte aligned.
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%include "reg_sizes.asm"
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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 tmp3 arg4
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%define return rax
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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 tmp r11
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%define tmp3 r10
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%define return rax
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%define stack_size 8*16 + 8 ; must be an odd multiple of 8
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%define func(x) proc_frame x
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%macro FUNC_SAVE 0
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alloc_stack stack_size
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save_xmm128 xmm6, 0*16
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save_xmm128 xmm7, 1*16
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save_xmm128 xmm8, 2*16
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save_xmm128 xmm9, 3*16
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save_xmm128 xmm10, 4*16
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save_xmm128 xmm11, 5*16
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save_xmm128 xmm14, 6*16
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save_xmm128 xmm15, 7*16
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end_prolog
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%endmacro
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%macro FUNC_RESTORE 0
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movdqa xmm6, [rsp + 0*16]
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movdqa xmm7, [rsp + 1*16]
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movdqa xmm8, [rsp + 2*16]
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movdqa xmm9, [rsp + 3*16]
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movdqa xmm10, [rsp + 4*16]
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movdqa xmm11, [rsp + 5*16]
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movdqa xmm14, [rsp + 6*16]
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movdqa xmm15, [rsp + 7*16]
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add rsp, stack_size
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%endmacro
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%endif
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%define vec arg0
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%define len arg1
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%define ptr arg3
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%define pos rax
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%define xp1 xmm0
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%define xq1 xmm1
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%define xtmp1 xmm2
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%define xs1 xmm3
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%define xp2 xmm4
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%define xq2 xmm5
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%define xtmp2 xmm6
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%define xs2 xmm7
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%define xp3 xmm8
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%define xq3 xmm9
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%define xtmp3 xmm10
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%define xs3 xmm11
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%define xzero xmm14
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%define xpoly xmm15
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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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default rel
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[bits 64]
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section .text
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align 16
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global pq_gen_avx:ISAL_SYM_TYPE_FUNCTION
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func(pq_gen_avx)
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FUNC_SAVE
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sub vec, 3 ;Keep as offset to last source
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jng return_fail ;Must have at least 2 sources
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cmp len, 0
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je return_pass
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test len, (16-1) ;Check alignment of length
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jnz return_fail
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mov pos, 0
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vmovdqa xpoly, [poly]
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vpxor xzero, xzero, xzero
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cmp len, 48
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jl loop16
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len_aligned_32bytes:
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sub len, 48 ;Len points to last block
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loop48:
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mov ptr, [arg2+vec*8] ;Fetch last source pointer
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mov tmp, vec ;Set tmp to point back to last vector
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XLDR xs1, [ptr+pos] ;Preload last vector (source)
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XLDR xs2, [ptr+pos+16] ;Preload last vector (source)
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XLDR xs3, [ptr+pos+32] ;Preload last vector (source)
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vpxor xp1, xp1, xp1 ;p1 = 0
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vpxor xp2, xp2, xp2 ;p2 = 0
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vpxor xp3, xp3, xp3 ;p3 = 0
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vpxor xq1, xq1, xq1 ;q1 = 0
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vpxor xq2, xq2, xq2 ;q2 = 0
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vpxor xq3, xq3, xq3 ;q3 = 0
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next_vect:
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sub tmp, 1 ;Inner loop for each source vector
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mov ptr, [arg2+tmp*8] ; get pointer to next vect
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vpxor xq1, xq1, xs1 ; q1 ^= s1
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vpxor xq2, xq2, xs2 ; q2 ^= s2
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vpxor xq3, xq3, xs3 ; q3 ^= s3
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vpxor xp1, xp1, xs1 ; p1 ^= s1
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vpxor xp2, xp2, xs2 ; p2 ^= s2
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vpxor xp3, xp3, xs3 ; p3 ^= s2
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vpblendvb xtmp1, xzero, xpoly, xq1 ; xtmp1 = poly or 0x00
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vpblendvb xtmp2, xzero, xpoly, xq2 ; xtmp2 = poly or 0x00
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vpblendvb xtmp3, xzero, xpoly, xq3 ; xtmp3 = poly or 0x00
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XLDR xs1, [ptr+pos] ; Get next vector (source data1)
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XLDR xs2, [ptr+pos+16] ; Get next vector (source data2)
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XLDR xs3, [ptr+pos+32] ; Get next vector (source data3)
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vpaddb xq1, xq1, xq1 ; q1 = q1<<1
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vpaddb xq2, xq2, xq2 ; q2 = q2<<1
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vpaddb xq3, xq3, xq3 ; q3 = q3<<1
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vpxor xq1, xq1, xtmp1 ; q1 = q1<<1 ^ poly_masked
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vpxor xq2, xq2, xtmp2 ; q2 = q2<<1 ^ poly_masked
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vpxor xq3, xq3, xtmp3 ; q3 = q3<<1 ^ poly_masked
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jg next_vect ; Loop for each vect except 0
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mov ptr, [arg2+8+vec*8] ;Get address of P parity vector
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mov tmp, [arg2+(2*8)+vec*8] ;Get address of Q parity vector
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vpxor xp1, xp1, xs1 ;p1 ^= s1[0] - last source is already loaded
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vpxor xq1, xq1, xs1 ;q1 ^= 1 * s1[0]
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vpxor xp2, xp2, xs2 ;p2 ^= s2[0]
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vpxor xq2, xq2, xs2 ;q2 ^= 1 * s2[0]
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vpxor xp3, xp3, xs3 ;p3 ^= s3[0]
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vpxor xq3, xq3, xs3 ;q3 ^= 1 * s3[0]
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XSTR [ptr+pos], xp1 ;Write parity P1 vector
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XSTR [ptr+pos+16], xp2 ;Write parity P2 vector
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XSTR [ptr+pos+32], xp3 ;Write parity P3 vector
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XSTR [tmp+pos], xq1 ;Write parity Q1 vector
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XSTR [tmp+pos+16], xq2 ;Write parity Q2 vector
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XSTR [tmp+pos+32], xq3 ;Write parity Q3 vector
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add pos, 48
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cmp pos, len
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jle loop48
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;; ------------------------------
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;; Do last 16 or 32 Bytes remaining
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add len, 48
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cmp pos, len
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je return_pass
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loop16:
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mov ptr, [arg2+vec*8] ;Fetch last source pointer
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mov tmp, vec ;Set tmp to point back to last vector
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XLDR xs1, [ptr+pos] ;Preload last vector (source)
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vpxor xp1, xp1, xp1 ;p = 0
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vpxor xq1, xq1, xq1 ;q = 0
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next_vect16:
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sub tmp, 1 ;Inner loop for each source vector
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mov ptr, [arg2+tmp*8] ; get pointer to next vect
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vpxor xq1, xq1, xs1 ; q1 ^= s1
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vpblendvb xtmp1, xzero, xpoly, xq1 ; xtmp1 = poly or 0x00
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vpxor xp1, xp1, xs1 ; p ^= s
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vpaddb xq1, xq1, xq1 ; q = q<<1
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vpxor xq1, xq1, xtmp1 ; q = q<<1 ^ poly_masked
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XLDR xs1, [ptr+pos] ; Get next vector (source data)
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jg next_vect16 ; Loop for each vect except 0
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mov ptr, [arg2+8+vec*8] ;Get address of P parity vector
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mov tmp, [arg2+(2*8)+vec*8] ;Get address of Q parity vector
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vpxor xp1, xp1, xs1 ;p ^= s[0] - last source is already loaded
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vpxor xq1, xq1, xs1 ;q ^= 1 * s[0]
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XSTR [ptr+pos], xp1 ;Write parity P vector
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XSTR [tmp+pos], xq1 ;Write parity Q vector
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add pos, 16
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cmp pos, len
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jl loop16
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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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poly:
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dq 0x1d1d1d1d1d1d1d1d, 0x1d1d1d1d1d1d1d1d
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;;; func core, ver, snum
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slversion pq_gen_avx, 02, 0a, 0039
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