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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ; Copyright(c) 2011-2015 Intel Corporation All rights reserved. | |
3 | ; | |
4 | ; Redistribution and use in source and binary forms, with or without | |
5 | ; modification, are permitted provided that the following conditions | |
6 | ; are met: | |
7 | ; * Redistributions of source code must retain the above copyright | |
8 | ; notice, this list of conditions and the following disclaimer. | |
9 | ; * Redistributions in binary form must reproduce the above copyright | |
10 | ; notice, this list of conditions and the following disclaimer in | |
11 | ; the documentation and/or other materials provided with the | |
12 | ; distribution. | |
13 | ; * Neither the name of Intel Corporation nor the names of its | |
14 | ; contributors may be used to endorse or promote products derived | |
15 | ; from this software without specific prior written permission. | |
16 | ; | |
17 | ; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
18 | ; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
19 | ; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
20 | ; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
21 | ; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
22 | ; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
23 | ; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
24 | ; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
25 | ; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
26 | ; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
27 | ; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
29 | ||
30 | ;;; | |
31 | ;;; gf_vect_dot_prod_avx2(len, vec, *g_tbls, **buffs, *dest); | |
32 | ;;; | |
33 | ||
34 | %include "reg_sizes.asm" | |
35 | ||
36 | %ifidn __OUTPUT_FORMAT__, elf64 | |
37 | %define arg0 rdi | |
38 | %define arg1 rsi | |
39 | %define arg2 rdx | |
40 | %define arg3 rcx | |
41 | %define arg4 r8 | |
42 | %define arg5 r9 | |
43 | ||
44 | %define tmp r11 | |
45 | %define tmp.w r11d | |
46 | %define tmp.b r11b | |
47 | %define tmp2 r10 | |
48 | %define tmp3 r9 | |
49 | %define return rax | |
50 | %macro SLDR 2 | |
51 | %endmacro | |
52 | %define SSTR SLDR | |
53 | %define PS 8 | |
54 | %define func(x) x: | |
55 | %define FUNC_SAVE | |
56 | %define FUNC_RESTORE | |
57 | %endif | |
58 | ||
59 | %ifidn __OUTPUT_FORMAT__, win64 | |
60 | %define arg0 rcx | |
61 | %define arg1 rdx | |
62 | %define arg2 r8 | |
63 | %define arg3 r9 | |
64 | ||
65 | %define arg4 r12 ; must be saved and loaded | |
66 | %define tmp r11 | |
67 | %define tmp.w r11d | |
68 | %define tmp.b r11b | |
69 | %define tmp2 r10 | |
70 | %define tmp3 rdi ; must be saved and loaded | |
71 | %define return rax | |
72 | %macro SLDR 2 | |
73 | %endmacro | |
74 | %define SSTR SLDR | |
75 | %define PS 8 | |
76 | %define frame_size 2*8 | |
77 | %define arg(x) [rsp + frame_size + PS + PS*x] | |
78 | ||
79 | %define func(x) proc_frame x | |
80 | %macro FUNC_SAVE 0 | |
81 | rex_push_reg r12 | |
82 | push_reg rdi | |
83 | end_prolog | |
84 | mov arg4, arg(4) | |
85 | %endmacro | |
86 | ||
87 | %macro FUNC_RESTORE 0 | |
88 | pop rdi | |
89 | pop r12 | |
90 | %endmacro | |
91 | %endif | |
92 | ||
93 | %ifidn __OUTPUT_FORMAT__, elf32 | |
94 | ||
95 | ;;;================== High Address; | |
96 | ;;; arg4 | |
97 | ;;; arg3 | |
98 | ;;; arg2 | |
99 | ;;; arg1 | |
100 | ;;; arg0 | |
101 | ;;; return | |
102 | ;;;<================= esp of caller | |
103 | ;;; ebp | |
104 | ;;;<================= ebp = esp | |
105 | ;;; esi | |
106 | ;;; edi | |
107 | ;;; ebx | |
108 | ;;;<================= esp of callee | |
109 | ;;; | |
110 | ;;;================== Low Address; | |
111 | ||
112 | %define PS 4 | |
113 | %define LOG_PS 2 | |
114 | %define func(x) x: | |
115 | %define arg(x) [ebp + PS*2 + PS*x] | |
116 | ||
117 | %define trans ecx ;trans is for the variables in stack | |
118 | %define arg0 trans | |
119 | %define arg0_m arg(0) | |
120 | %define arg1 trans | |
121 | %define arg1_m arg(1) | |
122 | %define arg2 arg2_m | |
123 | %define arg2_m arg(2) | |
124 | %define arg3 ebx | |
125 | %define arg4 trans | |
126 | %define arg4_m arg(4) | |
127 | %define tmp edx | |
128 | %define tmp.w edx | |
129 | %define tmp.b dl | |
130 | %define tmp2 edi | |
131 | %define tmp3 esi | |
132 | %define return eax | |
133 | %macro SLDR 2 ;stack load/restore | |
134 | mov %1, %2 | |
135 | %endmacro | |
136 | %define SSTR SLDR | |
137 | ||
138 | %macro FUNC_SAVE 0 | |
139 | push ebp | |
140 | mov ebp, esp | |
141 | push esi | |
142 | push edi | |
143 | push ebx | |
144 | mov arg3, arg(3) | |
145 | %endmacro | |
146 | ||
147 | %macro FUNC_RESTORE 0 | |
148 | pop ebx | |
149 | pop edi | |
150 | pop esi | |
151 | mov esp, ebp | |
152 | pop ebp | |
153 | %endmacro | |
154 | ||
155 | %endif ; output formats | |
156 | ||
157 | %define len arg0 | |
158 | %define vec arg1 | |
159 | %define mul_array arg2 | |
160 | %define src arg3 | |
161 | %define dest arg4 | |
162 | ||
163 | %define vec_i tmp2 | |
164 | %define ptr tmp3 | |
165 | %define pos return | |
166 | ||
167 | %ifidn PS,4 ;32-bit code | |
168 | %define vec_m arg1_m | |
169 | %define len_m arg0_m | |
170 | %define dest_m arg4_m | |
171 | %endif | |
172 | ||
173 | %ifndef EC_ALIGNED_ADDR | |
174 | ;;; Use Un-aligned load/store | |
175 | %define XLDR vmovdqu | |
176 | %define XSTR vmovdqu | |
177 | %else | |
178 | ;;; Use Non-temporal load/stor | |
179 | %ifdef NO_NT_LDST | |
180 | %define XLDR vmovdqa | |
181 | %define XSTR vmovdqa | |
182 | %else | |
183 | %define XLDR vmovntdqa | |
184 | %define XSTR vmovntdq | |
185 | %endif | |
186 | %endif | |
187 | ||
188 | %ifidn PS,8 ;64-bit code | |
189 | default rel | |
190 | [bits 64] | |
191 | %endif | |
192 | ||
193 | section .text | |
194 | ||
195 | %define xmask0f ymm3 | |
196 | %define xmask0fx xmm3 | |
197 | %define xgft_lo ymm4 | |
198 | %define xgft_hi ymm5 | |
199 | ||
200 | %define x0 ymm0 | |
201 | %define xtmpa ymm1 | |
202 | %define xp ymm2 | |
203 | ||
204 | align 16 | |
205 | global gf_vect_dot_prod_avx2:function | |
206 | func(gf_vect_dot_prod_avx2) | |
207 | FUNC_SAVE | |
208 | SLDR len, len_m | |
209 | sub len, 32 | |
210 | SSTR len_m, len | |
211 | jl .return_fail | |
212 | xor pos, pos | |
213 | mov tmp.b, 0x0f | |
214 | vpinsrb xmask0fx, xmask0fx, tmp.w, 0 | |
215 | vpbroadcastb xmask0f, xmask0fx ;Construct mask 0x0f0f0f... | |
216 | ||
217 | .loop32: | |
218 | vpxor xp, xp | |
219 | mov tmp, mul_array | |
220 | xor vec_i, vec_i | |
221 | ||
222 | .next_vect: | |
223 | ||
224 | mov ptr, [src+vec_i*PS] | |
225 | ||
226 | vmovdqu xgft_lo, [tmp] ;Load array Cx{00}, Cx{01}, Cx{02}, ... | |
227 | ; " Cx{00}, Cx{10}, Cx{20}, ... , Cx{f0} | |
228 | vperm2i128 xgft_hi, xgft_lo, xgft_lo, 0x11 ; swapped to hi | hi | |
229 | vperm2i128 xgft_lo, xgft_lo, xgft_lo, 0x00 ; swapped to lo | lo | |
230 | ||
231 | XLDR x0, [ptr+pos] ;Get next source vector | |
232 | ||
233 | add tmp, 32 | |
234 | add vec_i, 1 | |
235 | ||
236 | vpand xtmpa, x0, xmask0f ;Mask low src nibble in bits 4-0 | |
237 | vpsraw x0, x0, 4 ;Shift to put high nibble into bits 4-0 | |
238 | vpand x0, x0, xmask0f ;Mask high src nibble in bits 4-0 | |
239 | ||
240 | vpshufb xgft_hi, xgft_hi, x0 ;Lookup mul table of high nibble | |
241 | vpshufb xgft_lo, xgft_lo, xtmpa ;Lookup mul table of low nibble | |
242 | vpxor xgft_hi, xgft_hi, xgft_lo ;GF add high and low partials | |
243 | vpxor xp, xp, xgft_hi ;xp += partial | |
244 | ||
245 | SLDR vec, vec_m | |
246 | cmp vec_i, vec | |
247 | jl .next_vect | |
248 | ||
249 | SLDR dest, dest_m | |
250 | XSTR [dest+pos], xp | |
251 | ||
252 | add pos, 32 ;Loop on 32 bytes at a time | |
253 | SLDR len, len_m | |
254 | cmp pos, len | |
255 | jle .loop32 | |
256 | ||
257 | lea tmp, [len + 32] | |
258 | cmp pos, tmp | |
259 | je .return_pass | |
260 | ||
261 | ;; Tail len | |
262 | mov pos, len ;Overlapped offset length-32 | |
263 | jmp .loop32 ;Do one more overlap pass | |
264 | ||
265 | .return_pass: | |
266 | mov return, 0 | |
267 | FUNC_RESTORE | |
268 | ret | |
269 | ||
270 | .return_fail: | |
271 | mov return, 1 | |
272 | FUNC_RESTORE | |
273 | ret | |
274 | ||
275 | endproc_frame | |
276 | ||
277 | section .data | |
278 | ||
279 | ;;; func core, ver, snum | |
280 | slversion gf_vect_dot_prod_avx2, 04, 05, 0190 |