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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_2vect_dot_prod_avx2(len, vec, *g_tbls, **buffs, **dests); | |
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 tmp4 r12 ; must be saved and restored | |
50 | %define return rax | |
51 | %macro SLDR 2 | |
52 | %endmacro | |
53 | %define SSTR SLDR | |
54 | %define PS 8 | |
55 | %define LOG_PS 3 | |
56 | ||
57 | %define func(x) x: | |
58 | %macro FUNC_SAVE 0 | |
59 | push r12 | |
60 | %endmacro | |
61 | %macro FUNC_RESTORE 0 | |
62 | pop r12 | |
63 | %endmacro | |
64 | %endif | |
65 | ||
66 | %ifidn __OUTPUT_FORMAT__, win64 | |
67 | %define arg0 rcx | |
68 | %define arg1 rdx | |
69 | %define arg2 r8 | |
70 | %define arg3 r9 | |
71 | ||
72 | %define arg4 r12 ; must be saved, loaded and restored | |
73 | %define tmp r11 | |
74 | %define tmp.w r11d | |
75 | %define tmp.b r11b | |
76 | %define tmp2 r10 | |
77 | %define tmp3 r13 ; must be saved and restored | |
78 | %define tmp4 r14 ; must be saved and restored | |
79 | %define return rax | |
80 | %macro SLDR 2 | |
81 | %endmacro | |
82 | %define SSTR SLDR | |
83 | %define PS 8 | |
84 | %define LOG_PS 3 | |
85 | %define stack_size 3*16 + 3*8 ; must be an odd multiple of 8 | |
86 | %define arg(x) [rsp + stack_size + PS + PS*x] | |
87 | ||
88 | %define func(x) proc_frame x | |
89 | %macro FUNC_SAVE 0 | |
90 | alloc_stack stack_size | |
91 | vmovdqa [rsp + 0*16], xmm6 | |
92 | vmovdqa [rsp + 1*16], xmm7 | |
93 | vmovdqa [rsp + 2*16], xmm8 | |
94 | save_reg r12, 3*16 + 0*8 | |
95 | save_reg r13, 3*16 + 1*8 | |
96 | save_reg r14, 3*16 + 2*8 | |
97 | end_prolog | |
98 | mov arg4, arg(4) | |
99 | %endmacro | |
100 | ||
101 | %macro FUNC_RESTORE 0 | |
102 | vmovdqa xmm6, [rsp + 0*16] | |
103 | vmovdqa xmm7, [rsp + 1*16] | |
104 | vmovdqa xmm8, [rsp + 2*16] | |
105 | mov r12, [rsp + 3*16 + 0*8] | |
106 | mov r13, [rsp + 3*16 + 1*8] | |
107 | mov r14, [rsp + 3*16 + 2*8] | |
108 | add rsp, stack_size | |
109 | %endmacro | |
110 | %endif | |
111 | ||
112 | %ifidn __OUTPUT_FORMAT__, elf32 | |
113 | ||
114 | ;;;================== High Address; | |
115 | ;;; arg4 | |
116 | ;;; arg3 | |
117 | ;;; arg2 | |
118 | ;;; arg1 | |
119 | ;;; arg0 | |
120 | ;;; return | |
121 | ;;;<================= esp of caller | |
122 | ;;; ebp | |
123 | ;;;<================= ebp = esp | |
124 | ;;; var0 | |
125 | ;;; esi | |
126 | ;;; edi | |
127 | ;;; ebx | |
128 | ;;;<================= esp of callee | |
129 | ;;; | |
130 | ;;;================== Low Address; | |
131 | ||
132 | %define PS 4 | |
133 | %define LOG_PS 2 | |
134 | %define func(x) x: | |
135 | %define arg(x) [ebp + PS*2 + PS*x] | |
136 | %define var(x) [ebp - PS - PS*x] | |
137 | ||
138 | %define trans ecx | |
139 | %define trans2 esi | |
140 | %define arg0 trans ;trans and trans2 are for the variables in stack | |
141 | %define arg0_m arg(0) | |
142 | %define arg1 ebx | |
143 | %define arg2 arg2_m | |
144 | %define arg2_m arg(2) | |
145 | %define arg3 trans | |
146 | %define arg3_m arg(3) | |
147 | %define arg4 trans | |
148 | %define arg4_m arg(4) | |
149 | %define tmp edx | |
150 | %define tmp.w edx | |
151 | %define tmp.b dl | |
152 | %define tmp2 edi | |
153 | %define tmp3 trans2 | |
154 | %define tmp4 trans2 | |
155 | %define tmp4_m var(0) | |
156 | %define return eax | |
157 | %macro SLDR 2 ;stack load/restore | |
158 | mov %1, %2 | |
159 | %endmacro | |
160 | %define SSTR SLDR | |
161 | ||
162 | %macro FUNC_SAVE 0 | |
163 | push ebp | |
164 | mov ebp, esp | |
165 | sub esp, PS*1 ;1 local variable | |
166 | push esi | |
167 | push edi | |
168 | push ebx | |
169 | mov arg1, arg(1) | |
170 | %endmacro | |
171 | ||
172 | %macro FUNC_RESTORE 0 | |
173 | pop ebx | |
174 | pop edi | |
175 | pop esi | |
176 | add esp, PS*1 ;1 local variable | |
177 | pop ebp | |
178 | %endmacro | |
179 | ||
180 | %endif ; output formats | |
181 | ||
182 | %define len arg0 | |
183 | %define vec arg1 | |
184 | %define mul_array arg2 | |
185 | %define src arg3 | |
186 | %define dest1 arg4 | |
187 | ||
188 | %define vec_i tmp2 | |
189 | %define ptr tmp3 | |
190 | %define dest2 tmp4 | |
191 | %define pos return | |
192 | ||
193 | %ifidn PS,4 ;32-bit code | |
194 | %define len_m arg0_m | |
195 | %define src_m arg3_m | |
196 | %define dest1_m arg4_m | |
197 | %define dest2_m tmp4_m | |
198 | %endif | |
199 | ||
200 | %ifndef EC_ALIGNED_ADDR | |
201 | ;;; Use Un-aligned load/store | |
202 | %define XLDR vmovdqu | |
203 | %define XSTR vmovdqu | |
204 | %else | |
205 | ||
206 | ;;; Use Non-temporal load/stor | |
207 | %ifdef NO_NT_LDST | |
208 | %define XLDR vmovdqa | |
209 | %define XSTR vmovdqa | |
210 | %else | |
211 | %define XLDR vmovntdqa | |
212 | %define XSTR vmovntdq | |
213 | %endif | |
214 | %endif | |
215 | ||
216 | %ifidn PS,8 ;64-bit code | |
217 | default rel | |
218 | [bits 64] | |
219 | %endif | |
220 | ||
221 | section .text | |
222 | ||
223 | %ifidn PS,8 ;64-bit code | |
224 | %define xmask0f ymm8 | |
225 | %define xmask0fx xmm8 | |
226 | %define xgft1_lo ymm7 | |
227 | %define xgft1_hi ymm6 | |
228 | %define xgft2_lo ymm5 | |
229 | %define xgft2_hi ymm4 | |
230 | ||
231 | %define x0 ymm0 | |
232 | %define xtmpa ymm1 | |
233 | %define xp1 ymm2 | |
234 | %define xp2 ymm3 | |
235 | %else ;32-bit code | |
236 | %define xmask0f ymm7 | |
237 | %define xmask0fx xmm7 | |
238 | %define xgft1_lo ymm5 | |
239 | %define xgft1_hi ymm4 | |
240 | %define xgft2_lo xgft1_lo | |
241 | %define xgft2_hi xgft1_hi | |
242 | ||
243 | %define x0 ymm0 | |
244 | %define xtmpa ymm1 | |
245 | %define xp1 ymm2 | |
246 | %define xp2 ymm3 | |
247 | ||
248 | %endif | |
249 | ||
250 | align 16 | |
251 | global gf_2vect_dot_prod_avx2:function | |
252 | ||
253 | func(gf_2vect_dot_prod_avx2) | |
254 | FUNC_SAVE | |
255 | SLDR len, len_m | |
256 | sub len, 32 | |
257 | SSTR len_m, len | |
258 | jl .return_fail | |
259 | xor pos, pos | |
260 | mov tmp.b, 0x0f | |
261 | vpinsrb xmask0fx, xmask0fx, tmp.w, 0 | |
262 | vpbroadcastb xmask0f, xmask0fx ;Construct mask 0x0f0f0f... | |
263 | ||
264 | sal vec, LOG_PS ;vec *= PS. Make vec_i count by PS | |
265 | SLDR dest1, dest1_m | |
266 | mov dest2, [dest1+PS] | |
267 | SSTR dest2_m, dest2 | |
268 | mov dest1, [dest1] | |
269 | SSTR dest1_m, dest1 | |
270 | ||
271 | .loop32 | |
272 | vpxor xp1, xp1 | |
273 | vpxor xp2, xp2 | |
274 | mov tmp, mul_array | |
275 | xor vec_i, vec_i | |
276 | ||
277 | .next_vect | |
278 | SLDR src, src_m | |
279 | mov ptr, [src+vec_i] | |
280 | ||
281 | vmovdqu xgft1_lo, [tmp] ;Load array Ax{00}, Ax{01}, ..., Ax{0f} | |
282 | ; " Ax{00}, Ax{10}, ..., Ax{f0} | |
283 | vperm2i128 xgft1_hi, xgft1_lo, xgft1_lo, 0x11 ; swapped to hi | hi | |
284 | vperm2i128 xgft1_lo, xgft1_lo, xgft1_lo, 0x00 ; swapped to lo | lo | |
285 | %ifidn PS,8 ; 64-bit code | |
286 | vmovdqu xgft2_lo, [tmp+vec*(32/PS)] ;Load array Bx{00}, Bx{01}, ..., Bx{0f} | |
287 | ; " Bx{00}, Bx{10}, ..., Bx{f0} | |
288 | vperm2i128 xgft2_hi, xgft2_lo, xgft2_lo, 0x11 ; swapped to hi | hi | |
289 | vperm2i128 xgft2_lo, xgft2_lo, xgft2_lo, 0x00 ; swapped to lo | lo | |
290 | ||
291 | XLDR x0, [ptr+pos] ;Get next source vector | |
292 | add tmp, 32 | |
293 | add vec_i, PS | |
294 | %else | |
295 | XLDR x0, [ptr+pos] ;Get next source vector | |
296 | %endif | |
297 | ||
298 | vpand xtmpa, x0, xmask0f ;Mask low src nibble in bits 4-0 | |
299 | vpsraw x0, x0, 4 ;Shift to put high nibble into bits 4-0 | |
300 | vpand x0, x0, xmask0f ;Mask high src nibble in bits 4-0 | |
301 | ||
302 | vpshufb xgft1_hi, x0 ;Lookup mul table of high nibble | |
303 | vpshufb xgft1_lo, xtmpa ;Lookup mul table of low nibble | |
304 | vpxor xgft1_hi, xgft1_lo ;GF add high and low partials | |
305 | vpxor xp1, xgft1_hi ;xp1 += partial | |
306 | ||
307 | %ifidn PS,4 ; 32-bit code | |
308 | vmovdqu xgft2_lo, [tmp+vec*(32/PS)] ;Load array Bx{00}, Bx{01}, ..., Bx{0f} | |
309 | ; " Bx{00}, Bx{10}, ..., Bx{f0} | |
310 | vperm2i128 xgft2_hi, xgft2_lo, xgft2_lo, 0x11 ; swapped to hi | hi | |
311 | vperm2i128 xgft2_lo, xgft2_lo, xgft2_lo, 0x00 ; swapped to lo | lo | |
312 | add tmp, 32 | |
313 | add vec_i, PS | |
314 | %endif | |
315 | vpshufb xgft2_hi, x0 ;Lookup mul table of high nibble | |
316 | vpshufb xgft2_lo, xtmpa ;Lookup mul table of low nibble | |
317 | vpxor xgft2_hi, xgft2_lo ;GF add high and low partials | |
318 | vpxor xp2, xgft2_hi ;xp2 += partial | |
319 | ||
320 | cmp vec_i, vec | |
321 | jl .next_vect | |
322 | ||
323 | SLDR dest1, dest1_m | |
324 | SLDR dest2, dest2_m | |
325 | XSTR [dest1+pos], xp1 | |
326 | XSTR [dest2+pos], xp2 | |
327 | ||
328 | SLDR len, len_m | |
329 | add pos, 32 ;Loop on 32 bytes at a time | |
330 | cmp pos, len | |
331 | jle .loop32 | |
332 | ||
333 | lea tmp, [len + 32] | |
334 | cmp pos, tmp | |
335 | je .return_pass | |
336 | ||
337 | ;; Tail len | |
338 | mov pos, len ;Overlapped offset length-16 | |
339 | jmp .loop32 ;Do one more overlap pass | |
340 | ||
341 | .return_pass: | |
342 | mov return, 0 | |
343 | FUNC_RESTORE | |
344 | ret | |
345 | ||
346 | .return_fail: | |
347 | mov return, 1 | |
348 | FUNC_RESTORE | |
349 | ret | |
350 | ||
351 | endproc_frame | |
352 | ||
353 | section .data | |
354 | ||
355 | ;;; func core, ver, snum | |
356 | slversion gf_2vect_dot_prod_avx2, 04, 05, 0196 |