Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / libjpeg-turbo / 926e01ffe1951f219fa7e4618a86355331327d6d / . / simd / jfsseflt-64.asm
blob: 07245d2ddba431a1acbc8cecbb44ce0224215c3b [file] [log] [blame]
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]1;
DRCa644fb02010-04-20 18:20:13 +0000[diff] [blame]2; jfsseflt-64.asm - floating-point FDCT (64-bit SSE)
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]3;
4; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5; Copyright 2009 D. R. Commander
6;
7; Based on
8; x86 SIMD extension for IJG JPEG library
9; Copyright (C) 1999-2006, MIYASAKA Masaru.
10; For conditions of distribution and use, see copyright notice in jsimdext.inc
11;
12; This file should be assembled with NASM (Netwide Assembler),
13; can *not* be assembled with Microsoft's MASM or any compatible
14; assembler (including Borland's Turbo Assembler).
15; NASM is available from http://nasm.sourceforge.net/ or
16; http://sourceforge.net/project/showfiles.php?group_id=6208
17;
18; This file contains a floating-point implementation of the forward DCT
19; (Discrete Cosine Transform). The following code is based directly on
20; the IJG's original jfdctflt.c; see the jfdctflt.c for more details.
21;
22; [TAB8]
23
24%include "jsimdext.inc"
25%include "jdct.inc"
26
27; --------------------------------------------------------------------------
28
29%macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5)
30 shufps %1,%2,0x44
31%endmacro
32
33%macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7)
34 shufps %1,%2,0xEE
35%endmacro
36
37; --------------------------------------------------------------------------
38 SECTION SEG_CONST
39
40 alignz 16
41 global EXTN(jconst_fdct_float_sse)
42
43EXTN(jconst_fdct_float_sse):
44
45PD_0_382 times 4 dd 0.382683432365089771728460
46PD_0_707 times 4 dd 0.707106781186547524400844
47PD_0_541 times 4 dd 0.541196100146196984399723
48PD_1_306 times 4 dd 1.306562964876376527856643
49
50 alignz 16
51
52; --------------------------------------------------------------------------
53 SECTION SEG_TEXT
54 BITS 64
55;
56; Perform the forward DCT on one block of samples.
57;
58; GLOBAL(void)
59; jsimd_fdct_float_sse (FAST_FLOAT * data)
60;
61
62; r10 = FAST_FLOAT * data
63
64%define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
65%define WK_NUM 2
66
67 align 16
68 global EXTN(jsimd_fdct_float_sse)
69
70EXTN(jsimd_fdct_float_sse):
71 push rbp
72 mov rax,rsp ; rax = original rbp
73 sub rsp, byte 4
74 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
75 mov [rsp],rax
76 mov rbp,rsp ; rbp = aligned rbp
77 lea rsp, [wk(0)]
78 collect_args
79
80 ; ---- Pass 1: process rows.
81
82 mov rdx, r10 ; (FAST_FLOAT *)
83 mov rcx, DCTSIZE/4
84.rowloop:
85
86 movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)]
87 movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)]
88 movaps xmm2, XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)]
89 movaps xmm3, XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)]
90
91 ; xmm0=(20 21 22 23), xmm2=(24 25 26 27)
92 ; xmm1=(30 31 32 33), xmm3=(34 35 36 37)
93
94 movaps xmm4,xmm0 ; transpose coefficients(phase 1)
95 unpcklps xmm0,xmm1 ; xmm0=(20 30 21 31)
96 unpckhps xmm4,xmm1 ; xmm4=(22 32 23 33)
97 movaps xmm5,xmm2 ; transpose coefficients(phase 1)
98 unpcklps xmm2,xmm3 ; xmm2=(24 34 25 35)
99 unpckhps xmm5,xmm3 ; xmm5=(26 36 27 37)
100
101 movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)]
102 movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)]
103 movaps xmm1, XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)]
104 movaps xmm3, XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)]
105
106 ; xmm6=(00 01 02 03), xmm1=(04 05 06 07)
107 ; xmm7=(10 11 12 13), xmm3=(14 15 16 17)
108
109 movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 32 23 33)
110 movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(24 34 25 35)
111
112 movaps xmm4,xmm6 ; transpose coefficients(phase 1)
113 unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11)
114 unpckhps xmm4,xmm7 ; xmm4=(02 12 03 13)
115 movaps xmm2,xmm1 ; transpose coefficients(phase 1)
116 unpcklps xmm1,xmm3 ; xmm1=(04 14 05 15)
117 unpckhps xmm2,xmm3 ; xmm2=(06 16 07 17)
118
119 movaps xmm7,xmm6 ; transpose coefficients(phase 2)
120 unpcklps2 xmm6,xmm0 ; xmm6=(00 10 20 30)=data0
121 unpckhps2 xmm7,xmm0 ; xmm7=(01 11 21 31)=data1
122 movaps xmm3,xmm2 ; transpose coefficients(phase 2)
123 unpcklps2 xmm2,xmm5 ; xmm2=(06 16 26 36)=data6
124 unpckhps2 xmm3,xmm5 ; xmm3=(07 17 27 37)=data7
125
126 movaps xmm0,xmm7
127 movaps xmm5,xmm6
128 subps xmm7,xmm2 ; xmm7=data1-data6=tmp6
129 subps xmm6,xmm3 ; xmm6=data0-data7=tmp7
130 addps xmm0,xmm2 ; xmm0=data1+data6=tmp1
131 addps xmm5,xmm3 ; xmm5=data0+data7=tmp0
132
133 movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 32 23 33)
134 movaps xmm3, XMMWORD [wk(1)] ; xmm3=(24 34 25 35)
135 movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6
136 movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
137
138 movaps xmm7,xmm4 ; transpose coefficients(phase 2)
139 unpcklps2 xmm4,xmm2 ; xmm4=(02 12 22 32)=data2
140 unpckhps2 xmm7,xmm2 ; xmm7=(03 13 23 33)=data3
141 movaps xmm6,xmm1 ; transpose coefficients(phase 2)
142 unpcklps2 xmm1,xmm3 ; xmm1=(04 14 24 34)=data4
143 unpckhps2 xmm6,xmm3 ; xmm6=(05 15 25 35)=data5
144
145 movaps xmm2,xmm7
146 movaps xmm3,xmm4
147 addps xmm7,xmm1 ; xmm7=data3+data4=tmp3
148 addps xmm4,xmm6 ; xmm4=data2+data5=tmp2
149 subps xmm2,xmm1 ; xmm2=data3-data4=tmp4
150 subps xmm3,xmm6 ; xmm3=data2-data5=tmp5
151
152 ; -- Even part
153
154 movaps xmm1,xmm5
155 movaps xmm6,xmm0
156 subps xmm5,xmm7 ; xmm5=tmp13
157 subps xmm0,xmm4 ; xmm0=tmp12
158 addps xmm1,xmm7 ; xmm1=tmp10
159 addps xmm6,xmm4 ; xmm6=tmp11
160
161 addps xmm0,xmm5
Pierre Ossman9a6b8dc2009-06-29 12:58:48 +0000[diff] [blame]162 mulps xmm0,[rel PD_0_707] ; xmm0=z1
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]163
164 movaps xmm7,xmm1
165 movaps xmm4,xmm5
166 subps xmm1,xmm6 ; xmm1=data4
167 subps xmm5,xmm0 ; xmm5=data6
168 addps xmm7,xmm6 ; xmm7=data0
169 addps xmm4,xmm0 ; xmm4=data2
170
171 movaps XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)], xmm1
172 movaps XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)], xmm5
173 movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7
174 movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
175
176 ; -- Odd part
177
178 movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6
179 movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7
180
181 addps xmm2,xmm3 ; xmm2=tmp10
182 addps xmm3,xmm6 ; xmm3=tmp11
183 addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7
184
Pierre Ossman9a6b8dc2009-06-29 12:58:48 +0000[diff] [blame]185 mulps xmm3,[rel PD_0_707] ; xmm3=z3
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]186
187 movaps xmm1,xmm2 ; xmm1=tmp10
188 subps xmm2,xmm6
Pierre Ossman9a6b8dc2009-06-29 12:58:48 +0000[diff] [blame]189 mulps xmm2,[rel PD_0_382] ; xmm2=z5
190 mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196)
191 mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562)
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]192 addps xmm1,xmm2 ; xmm1=z2
193 addps xmm6,xmm2 ; xmm6=z4
194
195 movaps xmm5,xmm0
196 subps xmm0,xmm3 ; xmm0=z13
197 addps xmm5,xmm3 ; xmm5=z11
198
199 movaps xmm7,xmm0
200 movaps xmm4,xmm5
201 subps xmm0,xmm1 ; xmm0=data3
202 subps xmm5,xmm6 ; xmm5=data7
203 addps xmm7,xmm1 ; xmm7=data5
204 addps xmm4,xmm6 ; xmm4=data1
205
206 movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0
207 movaps XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)], xmm5
208 movaps XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)], xmm7
209 movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
210
211 add rdx, 4*DCTSIZE*SIZEOF_FAST_FLOAT
212 dec rcx
213 jnz near .rowloop
214
215 ; ---- Pass 2: process columns.
216
217 mov rdx, r10 ; (FAST_FLOAT *)
218 mov rcx, DCTSIZE/4
219.columnloop:
220
221 movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)]
222 movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)]
223 movaps xmm2, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)]
224 movaps xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)]
225
226 ; xmm0=(02 12 22 32), xmm2=(42 52 62 72)
227 ; xmm1=(03 13 23 33), xmm3=(43 53 63 73)
228
229 movaps xmm4,xmm0 ; transpose coefficients(phase 1)
230 unpcklps xmm0,xmm1 ; xmm0=(02 03 12 13)
231 unpckhps xmm4,xmm1 ; xmm4=(22 23 32 33)
232 movaps xmm5,xmm2 ; transpose coefficients(phase 1)
233 unpcklps xmm2,xmm3 ; xmm2=(42 43 52 53)
234 unpckhps xmm5,xmm3 ; xmm5=(62 63 72 73)
235
236 movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)]
237 movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)]
238 movaps xmm1, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)]
239 movaps xmm3, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)]
240
241 ; xmm6=(00 10 20 30), xmm1=(40 50 60 70)
242 ; xmm7=(01 11 21 31), xmm3=(41 51 61 71)
243
244 movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 23 32 33)
245 movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(42 43 52 53)
246
247 movaps xmm4,xmm6 ; transpose coefficients(phase 1)
248 unpcklps xmm6,xmm7 ; xmm6=(00 01 10 11)
249 unpckhps xmm4,xmm7 ; xmm4=(20 21 30 31)
250 movaps xmm2,xmm1 ; transpose coefficients(phase 1)
251 unpcklps xmm1,xmm3 ; xmm1=(40 41 50 51)
252 unpckhps xmm2,xmm3 ; xmm2=(60 61 70 71)
253
254 movaps xmm7,xmm6 ; transpose coefficients(phase 2)
255 unpcklps2 xmm6,xmm0 ; xmm6=(00 01 02 03)=data0
256 unpckhps2 xmm7,xmm0 ; xmm7=(10 11 12 13)=data1
257 movaps xmm3,xmm2 ; transpose coefficients(phase 2)
258 unpcklps2 xmm2,xmm5 ; xmm2=(60 61 62 63)=data6
259 unpckhps2 xmm3,xmm5 ; xmm3=(70 71 72 73)=data7
260
261 movaps xmm0,xmm7
262 movaps xmm5,xmm6
263 subps xmm7,xmm2 ; xmm7=data1-data6=tmp6
264 subps xmm6,xmm3 ; xmm6=data0-data7=tmp7
265 addps xmm0,xmm2 ; xmm0=data1+data6=tmp1
266 addps xmm5,xmm3 ; xmm5=data0+data7=tmp0
267
268 movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 23 32 33)
269 movaps xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53)
270 movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6
271 movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
272
273 movaps xmm7,xmm4 ; transpose coefficients(phase 2)
274 unpcklps2 xmm4,xmm2 ; xmm4=(20 21 22 23)=data2
275 unpckhps2 xmm7,xmm2 ; xmm7=(30 31 32 33)=data3
276 movaps xmm6,xmm1 ; transpose coefficients(phase 2)
277 unpcklps2 xmm1,xmm3 ; xmm1=(40 41 42 43)=data4
278 unpckhps2 xmm6,xmm3 ; xmm6=(50 51 52 53)=data5
279
280 movaps xmm2,xmm7
281 movaps xmm3,xmm4
282 addps xmm7,xmm1 ; xmm7=data3+data4=tmp3
283 addps xmm4,xmm6 ; xmm4=data2+data5=tmp2
284 subps xmm2,xmm1 ; xmm2=data3-data4=tmp4
285 subps xmm3,xmm6 ; xmm3=data2-data5=tmp5
286
287 ; -- Even part
288
289 movaps xmm1,xmm5
290 movaps xmm6,xmm0
291 subps xmm5,xmm7 ; xmm5=tmp13
292 subps xmm0,xmm4 ; xmm0=tmp12
293 addps xmm1,xmm7 ; xmm1=tmp10
294 addps xmm6,xmm4 ; xmm6=tmp11
295
296 addps xmm0,xmm5
Pierre Ossman9a6b8dc2009-06-29 12:58:48 +0000[diff] [blame]297 mulps xmm0,[rel PD_0_707] ; xmm0=z1
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]298
299 movaps xmm7,xmm1
300 movaps xmm4,xmm5
301 subps xmm1,xmm6 ; xmm1=data4
302 subps xmm5,xmm0 ; xmm5=data6
303 addps xmm7,xmm6 ; xmm7=data0
304 addps xmm4,xmm0 ; xmm4=data2
305
306 movaps XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)], xmm1
307 movaps XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)], xmm5
308 movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7
309 movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
310
311 ; -- Odd part
312
313 movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6
314 movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7
315
316 addps xmm2,xmm3 ; xmm2=tmp10
317 addps xmm3,xmm6 ; xmm3=tmp11
318 addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7
319
Pierre Ossman9a6b8dc2009-06-29 12:58:48 +0000[diff] [blame]320 mulps xmm3,[rel PD_0_707] ; xmm3=z3
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]321
322 movaps xmm1,xmm2 ; xmm1=tmp10
323 subps xmm2,xmm6
Pierre Ossman9a6b8dc2009-06-29 12:58:48 +0000[diff] [blame]324 mulps xmm2,[rel PD_0_382] ; xmm2=z5
325 mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196)
326 mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562)
DRCcdc8ac32009-06-25 20:38:31 +0000[diff] [blame]327 addps xmm1,xmm2 ; xmm1=z2
328 addps xmm6,xmm2 ; xmm6=z4
329
330 movaps xmm5,xmm0
331 subps xmm0,xmm3 ; xmm0=z13
332 addps xmm5,xmm3 ; xmm5=z11
333
334 movaps xmm7,xmm0
335 movaps xmm4,xmm5
336 subps xmm0,xmm1 ; xmm0=data3
337 subps xmm5,xmm6 ; xmm5=data7
338 addps xmm7,xmm1 ; xmm7=data5
339 addps xmm4,xmm6 ; xmm4=data1
340
341 movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0
342 movaps XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)], xmm5
343 movaps XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)], xmm7
344 movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
345
346 add rdx, byte 4*SIZEOF_FAST_FLOAT
347 dec rcx
348 jnz near .columnloop
349
350 uncollect_args
351 mov rsp,rbp ; rsp <- aligned rbp
352 pop rsp ; rsp <- original rbp
353 pop rbp
354 ret
DRC132b5fd2009-10-08 09:04:56 +0000[diff] [blame]355
356; For some reason, the OS X linker does not honor the request to align the
357; segment unless we do this.
358 align 16