diff options
Diffstat (limited to 'src/isa-l/erasure_code/gf_2vect_mad_avx512.asm')
| -rw-r--r-- | src/isa-l/erasure_code/gf_2vect_mad_avx512.asm | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/src/isa-l/erasure_code/gf_2vect_mad_avx512.asm b/src/isa-l/erasure_code/gf_2vect_mad_avx512.asm new file mode 100644 index 000000000..6d972bba5 --- /dev/null +++ b/src/isa-l/erasure_code/gf_2vect_mad_avx512.asm @@ -0,0 +1,230 @@ +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; Copyright(c) 2011-2015 Intel Corporation All rights reserved. +; +; 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. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;; +;;; gf_2vect_mad_avx512(len, vec, vec_i, mul_array, src, dest); +;;; + +%include "reg_sizes.asm" + +%ifdef HAVE_AS_KNOWS_AVX512 + +%ifidn __OUTPUT_FORMAT__, elf64 + %define arg0 rdi + %define arg1 rsi + %define arg2 rdx + %define arg3 rcx + %define arg4 r8 + %define arg5 r9 + %define tmp r11 + %define tmp2 r10 + %define return rax + %define func(x) x: + %define FUNC_SAVE + %define FUNC_RESTORE +%endif + +%ifidn __OUTPUT_FORMAT__, win64 + %define arg0 rcx + %define arg1 rdx + %define arg2 r8 + %define arg3 r9 + %define arg4 r12 + %define arg5 r15 + %define tmp r11 + %define tmp2 r10 + %define return rax + %define stack_size 16*9 + 3*8 ; must be an odd multiple of 8 + %define arg(x) [rsp + stack_size + PS + PS*x] + + %define func(x) proc_frame x + %macro FUNC_SAVE 0 + sub rsp, stack_size + vmovdqa [rsp+16*0],xmm6 + vmovdqa [rsp+16*1],xmm7 + vmovdqa [rsp+16*2],xmm8 + vmovdqa [rsp+16*3],xmm9 + vmovdqa [rsp+16*4],xmm10 + vmovdqa [rsp+16*5],xmm11 + vmovdqa [rsp+16*6],xmm12 + vmovdqa [rsp+16*7],xmm13 + vmovdqa [rsp+16*8],xmm14 + save_reg r12, 9*16 + 0*8 + save_reg r15, 9*16 + 1*8 + end_prolog + mov arg4, arg(4) + mov arg5, arg(5) + %endmacro + + %macro FUNC_RESTORE 0 + vmovdqa xmm6, [rsp+16*0] + vmovdqa xmm7, [rsp+16*1] + vmovdqa xmm8, [rsp+16*2] + vmovdqa xmm9, [rsp+16*3] + vmovdqa xmm10, [rsp+16*4] + vmovdqa xmm11, [rsp+16*5] + vmovdqa xmm12, [rsp+16*6] + vmovdqa xmm13, [rsp+16*7] + vmovdqa xmm14, [rsp+16*8] + mov r12, [rsp + 9*16 + 0*8] + mov r15, [rsp + 9*16 + 1*8] + add rsp, stack_size + %endmacro +%endif + + +%define PS 8 +%define len arg0 +%define len.w arg0.w +%define vec arg1 +%define vec_i arg2 +%define mul_array arg3 +%define src arg4 +%define dest1 arg5 +%define pos return +%define pos.w return.w +%define dest2 tmp2 + +%ifndef EC_ALIGNED_ADDR +;;; Use Un-aligned load/store + %define XLDR vmovdqu8 + %define XSTR vmovdqu8 +%else +;;; Use Non-temporal load/stor + %ifdef NO_NT_LDST + %define XLDR vmovdqa + %define XSTR vmovdqa + %else + %define XLDR vmovntdqa + %define XSTR vmovntdq + %endif +%endif + +default rel +[bits 64] +section .text + +%define x0 zmm0 +%define xtmpa zmm1 +%define xtmph1 zmm2 +%define xtmpl1 zmm3 +%define xtmph2 zmm4 +%define xtmpl2 zmm5 +%define xd1 zmm6 +%define xd2 zmm7 +%define xtmpd1 zmm8 +%define xtmpd2 zmm9 +%define xgft1_hi zmm10 +%define xgft1_lo zmm11 +%define xgft1_loy ymm11 +%define xgft2_hi zmm12 +%define xgft2_lo zmm13 +%define xgft2_loy ymm13 +%define xmask0f zmm14 + +align 16 +global gf_2vect_mad_avx512:ISAL_SYM_TYPE_FUNCTION +func(gf_2vect_mad_avx512) + FUNC_SAVE + sub len, 64 + jl .return_fail + xor pos, pos + mov tmp, 0x0f + vpbroadcastb xmask0f, tmp ;Construct mask 0x0f0f0f... + sal vec_i, 5 ;Multiply by 32 + sal vec, 5 + lea tmp, [mul_array + vec_i] + vmovdqu xgft1_loy, [tmp] ;Load array Ax{00}..{0f}, Ax{00}..{f0} + vmovdqu xgft2_loy, [tmp+vec] ;Load array Bx{00}..{0f}, Bx{00}..{f0} + vshufi64x2 xgft1_hi, xgft1_lo, xgft1_lo, 0x55 + vshufi64x2 xgft1_lo, xgft1_lo, xgft1_lo, 0x00 + vshufi64x2 xgft2_hi, xgft2_lo, xgft2_lo, 0x55 + vshufi64x2 xgft2_lo, xgft2_lo, xgft2_lo, 0x00 + mov dest2, [dest1+PS] ; reuse mul_array + mov dest1, [dest1] + mov tmp, -1 + kmovq k1, tmp + +.loop64: + XLDR xd1, [dest1+pos] ;Get next dest vector + XLDR xd2, [dest2+pos] ;Get next dest vector + XLDR x0, [src+pos] ;Get next source vector + + vpandq xtmpa, x0, xmask0f ;Mask low src nibble in bits 4-0 + vpsraw x0, x0, 4 ;Shift to put high nibble into bits 4-0 + vpandq x0, x0, xmask0f ;Mask high src nibble in bits 4-0 + + vpshufb xtmph1 {k1}{z}, xgft1_hi, x0 ;Lookup mul table of high nibble + vpshufb xtmpl1 {k1}{z}, xgft1_lo, xtmpa ;Lookup mul table of low nibble + vpxorq xtmph1, xtmph1, xtmpl1 ;GF add high and low partials + vpxorq xd1, xd1, xtmph1 ;xd1 += partial + + vpshufb xtmph2 {k1}{z}, xgft2_hi, x0 ;Lookup mul table of high nibble + vpshufb xtmpl2 {k1}{z}, xgft2_lo, xtmpa ;Lookup mul table of low nibble + vpxorq xtmph2, xtmph2, xtmpl2 ;GF add high and low partials + vpxorq xd2, xd2, xtmph2 ;xd2 += partial + + XSTR [dest1+pos], xd1 + XSTR [dest2+pos], xd2 + + add pos, 64 ;Loop on 64 bytes at a time + cmp pos, len + jle .loop64 + + lea tmp, [len + 64] + cmp pos, tmp + je .return_pass + + ;; Tail len + mov pos, (1 << 63) + lea tmp, [len + 64 - 1] + and tmp, 63 + sarx pos, pos, tmp + kmovq k1, pos + mov pos, len ;Overlapped offset length-64 + jmp .loop64 ;Do one more overlap pass + +.return_pass: + mov return, 0 + FUNC_RESTORE + ret + +.return_fail: + mov return, 1 + FUNC_RESTORE + ret + +endproc_frame + +%else +%ifidn __OUTPUT_FORMAT__, win64 +global no_gf_2vect_mad_avx512 +no_gf_2vect_mad_avx512: +%endif +%endif ; ifdef HAVE_AS_KNOWS_AVX512 |