diff options
Diffstat (limited to 'src/isa-l/erasure_code/gf_vect_dot_prod_avx2.asm')
| -rw-r--r-- | src/isa-l/erasure_code/gf_vect_dot_prod_avx2.asm | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/isa-l/erasure_code/gf_vect_dot_prod_avx2.asm b/src/isa-l/erasure_code/gf_vect_dot_prod_avx2.asm new file mode 100644 index 000000000..f84dd4756 --- /dev/null +++ b/src/isa-l/erasure_code/gf_vect_dot_prod_avx2.asm @@ -0,0 +1,280 @@ +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; 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_vect_dot_prod_avx2(len, vec, *g_tbls, **buffs, *dest); +;;; + +%include "reg_sizes.asm" + +%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 tmp.w r11d + %define tmp.b r11b + %define tmp2 r10 + %define tmp3 r9 + %define return rax + %macro SLDR 2 + %endmacro + %define SSTR SLDR + %define PS 8 + %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 ; must be saved and loaded + %define tmp r11 + %define tmp.w r11d + %define tmp.b r11b + %define tmp2 r10 + %define tmp3 rdi ; must be saved and loaded + %define return rax + %macro SLDR 2 + %endmacro + %define SSTR SLDR + %define PS 8 + %define frame_size 2*8 + %define arg(x) [rsp + frame_size + PS + PS*x] + + %define func(x) proc_frame x + %macro FUNC_SAVE 0 + rex_push_reg r12 + push_reg rdi + end_prolog + mov arg4, arg(4) + %endmacro + + %macro FUNC_RESTORE 0 + pop rdi + pop r12 + %endmacro +%endif + +%ifidn __OUTPUT_FORMAT__, elf32 + +;;;================== High Address; +;;; arg4 +;;; arg3 +;;; arg2 +;;; arg1 +;;; arg0 +;;; return +;;;<================= esp of caller +;;; ebp +;;;<================= ebp = esp +;;; esi +;;; edi +;;; ebx +;;;<================= esp of callee +;;; +;;;================== Low Address; + + %define PS 4 + %define LOG_PS 2 + %define func(x) x: + %define arg(x) [ebp + PS*2 + PS*x] + + %define trans ecx ;trans is for the variables in stack + %define arg0 trans + %define arg0_m arg(0) + %define arg1 trans + %define arg1_m arg(1) + %define arg2 arg2_m + %define arg2_m arg(2) + %define arg3 ebx + %define arg4 trans + %define arg4_m arg(4) + %define tmp edx + %define tmp.w edx + %define tmp.b dl + %define tmp2 edi + %define tmp3 esi + %define return eax + %macro SLDR 2 ;stack load/restore + mov %1, %2 + %endmacro + %define SSTR SLDR + + %macro FUNC_SAVE 0 + push ebp + mov ebp, esp + push esi + push edi + push ebx + mov arg3, arg(3) + %endmacro + + %macro FUNC_RESTORE 0 + pop ebx + pop edi + pop esi + mov esp, ebp + pop ebp + %endmacro + +%endif ; output formats + +%define len arg0 +%define vec arg1 +%define mul_array arg2 +%define src arg3 +%define dest arg4 + +%define vec_i tmp2 +%define ptr tmp3 +%define pos return + +%ifidn PS,4 ;32-bit code + %define vec_m arg1_m + %define len_m arg0_m + %define dest_m arg4_m +%endif + +%ifndef EC_ALIGNED_ADDR +;;; Use Un-aligned load/store + %define XLDR vmovdqu + %define XSTR vmovdqu +%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 + +%ifidn PS,8 ;64-bit code + default rel + [bits 64] +%endif + +section .text + +%define xmask0f ymm3 +%define xmask0fx xmm3 +%define xgft_lo ymm4 +%define xgft_hi ymm5 + +%define x0 ymm0 +%define xtmpa ymm1 +%define xp ymm2 + +align 16 +global gf_vect_dot_prod_avx2:ISAL_SYM_TYPE_FUNCTION +func(gf_vect_dot_prod_avx2) + FUNC_SAVE + SLDR len, len_m + sub len, 32 + SSTR len_m, len + jl .return_fail + xor pos, pos + mov tmp.b, 0x0f + vpinsrb xmask0fx, xmask0fx, tmp.w, 0 + vpbroadcastb xmask0f, xmask0fx ;Construct mask 0x0f0f0f... + +.loop32: + vpxor xp, xp + mov tmp, mul_array + xor vec_i, vec_i + +.next_vect: + + mov ptr, [src+vec_i*PS] + + vmovdqu xgft_lo, [tmp] ;Load array Cx{00}, Cx{01}, Cx{02}, ... + ; " Cx{00}, Cx{10}, Cx{20}, ... , Cx{f0} + vperm2i128 xgft_hi, xgft_lo, xgft_lo, 0x11 ; swapped to hi | hi + vperm2i128 xgft_lo, xgft_lo, xgft_lo, 0x00 ; swapped to lo | lo + + XLDR x0, [ptr+pos] ;Get next source vector + + add tmp, 32 + add vec_i, 1 + + vpand xtmpa, x0, xmask0f ;Mask low src nibble in bits 4-0 + vpsraw x0, x0, 4 ;Shift to put high nibble into bits 4-0 + vpand x0, x0, xmask0f ;Mask high src nibble in bits 4-0 + + vpshufb xgft_hi, xgft_hi, x0 ;Lookup mul table of high nibble + vpshufb xgft_lo, xgft_lo, xtmpa ;Lookup mul table of low nibble + vpxor xgft_hi, xgft_hi, xgft_lo ;GF add high and low partials + vpxor xp, xp, xgft_hi ;xp += partial + + SLDR vec, vec_m + cmp vec_i, vec + jl .next_vect + + SLDR dest, dest_m + XSTR [dest+pos], xp + + add pos, 32 ;Loop on 32 bytes at a time + SLDR len, len_m + cmp pos, len + jle .loop32 + + lea tmp, [len + 32] + cmp pos, tmp + je .return_pass + + ;; Tail len + mov pos, len ;Overlapped offset length-32 + jmp .loop32 ;Do one more overlap pass + +.return_pass: + mov return, 0 + FUNC_RESTORE + ret + +.return_fail: + mov return, 1 + FUNC_RESTORE + ret + +endproc_frame + +section .data + +;;; func core, ver, snum +slversion gf_vect_dot_prod_avx2, 04, 05, 0190 |