2
; jiss2fst.asm - fast integer IDCT (SSE2)
4
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
7
; x86 SIMD extension for IJG JPEG library
8
; Copyright (C) 1999-2006, MIYASAKA Masaru.
9
; For conditions of distribution and use, see copyright notice in jsimdext.inc
11
; This file should be assembled with NASM (Netwide Assembler),
12
; can *not* be assembled with Microsoft's MASM or any compatible
13
; assembler (including Borland's Turbo Assembler).
14
; NASM is available from http://nasm.sourceforge.net/ or
15
; http://sourceforge.net/project/showfiles.php?group_id=6208
17
; This file contains a fast, not so accurate integer implementation of
18
; the inverse DCT (Discrete Cosine Transform). The following code is
19
; based directly on the IJG's original jidctfst.c; see the jidctfst.c
24
%include "jsimdext.inc"
27
; --------------------------------------------------------------------------
29
%define CONST_BITS 8 ; 14 is also OK.
32
%if IFAST_SCALE_BITS != PASS1_BITS
33
%error "'IFAST_SCALE_BITS' must be equal to 'PASS1_BITS'."
37
F_1_082 equ 277 ; FIX(1.082392200)
38
F_1_414 equ 362 ; FIX(1.414213562)
39
F_1_847 equ 473 ; FIX(1.847759065)
40
F_2_613 equ 669 ; FIX(2.613125930)
41
F_1_613 equ (F_2_613 - 256) ; FIX(2.613125930) - FIX(1)
43
; NASM cannot do compile-time arithmetic on floating-point constants.
44
%define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
45
F_1_082 equ DESCALE(1162209775,30-CONST_BITS) ; FIX(1.082392200)
46
F_1_414 equ DESCALE(1518500249,30-CONST_BITS) ; FIX(1.414213562)
47
F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
48
F_2_613 equ DESCALE(2805822602,30-CONST_BITS) ; FIX(2.613125930)
49
F_1_613 equ (F_2_613 - (1 << CONST_BITS)) ; FIX(2.613125930) - FIX(1)
52
; --------------------------------------------------------------------------
55
; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow)
56
; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw)
58
%define PRE_MULTIPLY_SCALE_BITS 2
59
%define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
62
global EXTN(jconst_idct_ifast_sse2)
64
EXTN(jconst_idct_ifast_sse2):
66
PW_F1414 times 8 dw F_1_414 << CONST_SHIFT
67
PW_F1847 times 8 dw F_1_847 << CONST_SHIFT
68
PW_MF1613 times 8 dw -F_1_613 << CONST_SHIFT
69
PW_F1082 times 8 dw F_1_082 << CONST_SHIFT
70
PB_CENTERJSAMP times 16 db CENTERJSAMPLE
74
; --------------------------------------------------------------------------
78
; Perform dequantization and inverse DCT on one block of coefficients.
81
; jsimd_idct_ifast_sse2 (void * dct_table, JCOEFPTR coef_block,
82
; JSAMPARRAY output_buf, JDIMENSION output_col)
85
%define dct_table(b) (b)+8 ; jpeg_component_info * compptr
86
%define coef_block(b) (b)+12 ; JCOEFPTR coef_block
87
%define output_buf(b) (b)+16 ; JSAMPARRAY output_buf
88
%define output_col(b) (b)+20 ; JDIMENSION output_col
90
%define original_ebp ebp+0
91
%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
95
global EXTN(jsimd_idct_ifast_sse2)
97
EXTN(jsimd_idct_ifast_sse2):
99
mov eax,esp ; eax = original ebp
101
and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
103
mov ebp,esp ; ebp = aligned ebp
107
; push edx ; need not be preserved
111
get_GOT ebx ; get GOT address
113
; ---- Pass 1: process columns from input.
115
; mov eax, [original_ebp]
116
mov edx, POINTER [dct_table(eax)] ; quantptr
117
mov esi, JCOEFPTR [coef_block(eax)] ; inptr
119
%ifndef NO_ZERO_COLUMN_TEST_IFAST_SSE2
120
mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)]
121
or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)]
124
movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)]
125
movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)]
126
por xmm0, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)]
127
por xmm1, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)]
128
por xmm0, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)]
129
por xmm1, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)]
130
por xmm0, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)]
138
; -- AC terms all zero
140
movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)]
141
pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
143
movdqa xmm7,xmm0 ; xmm0=in0=(00 01 02 03 04 05 06 07)
144
punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03)
145
punpckhwd xmm7,xmm7 ; xmm7=(04 04 05 05 06 06 07 07)
147
pshufd xmm6,xmm0,0x00 ; xmm6=col0=(00 00 00 00 00 00 00 00)
148
pshufd xmm2,xmm0,0x55 ; xmm2=col1=(01 01 01 01 01 01 01 01)
149
pshufd xmm5,xmm0,0xAA ; xmm5=col2=(02 02 02 02 02 02 02 02)
150
pshufd xmm0,xmm0,0xFF ; xmm0=col3=(03 03 03 03 03 03 03 03)
151
pshufd xmm1,xmm7,0x00 ; xmm1=col4=(04 04 04 04 04 04 04 04)
152
pshufd xmm4,xmm7,0x55 ; xmm4=col5=(05 05 05 05 05 05 05 05)
153
pshufd xmm3,xmm7,0xAA ; xmm3=col6=(06 06 06 06 06 06 06 06)
154
pshufd xmm7,xmm7,0xFF ; xmm7=col7=(07 07 07 07 07 07 07 07)
156
movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=col1
157
movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=col3
165
movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)]
166
movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)]
167
pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_IFAST_MULT_TYPE)]
168
pmullw xmm1, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_IFAST_MULT_TYPE)]
169
movdqa xmm2, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)]
170
movdqa xmm3, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)]
171
pmullw xmm2, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_IFAST_MULT_TYPE)]
172
pmullw xmm3, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_IFAST_MULT_TYPE)]
176
psubw xmm0,xmm2 ; xmm0=tmp11
178
paddw xmm4,xmm2 ; xmm4=tmp10
179
paddw xmm5,xmm3 ; xmm5=tmp13
181
psllw xmm1,PRE_MULTIPLY_SCALE_BITS
182
pmulhw xmm1,[GOTOFF(ebx,PW_F1414)]
183
psubw xmm1,xmm5 ; xmm1=tmp12
187
psubw xmm4,xmm5 ; xmm4=tmp3
188
psubw xmm0,xmm1 ; xmm0=tmp2
189
paddw xmm6,xmm5 ; xmm6=tmp0
190
paddw xmm7,xmm1 ; xmm7=tmp1
192
movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=tmp3
193
movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=tmp2
197
movdqa xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)]
198
movdqa xmm3, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)]
199
pmullw xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_IFAST_MULT_TYPE)]
200
pmullw xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_IFAST_MULT_TYPE)]
201
movdqa xmm5, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)]
202
movdqa xmm1, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)]
203
pmullw xmm5, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_IFAST_MULT_TYPE)]
204
pmullw xmm1, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_IFAST_MULT_TYPE)]
208
psubw xmm2,xmm1 ; xmm2=z12
209
psubw xmm5,xmm3 ; xmm5=z10
210
paddw xmm4,xmm1 ; xmm4=z11
211
paddw xmm0,xmm3 ; xmm0=z13
213
movdqa xmm1,xmm5 ; xmm1=z10(unscaled)
214
psllw xmm2,PRE_MULTIPLY_SCALE_BITS
215
psllw xmm5,PRE_MULTIPLY_SCALE_BITS
219
paddw xmm3,xmm0 ; xmm3=tmp7
221
psllw xmm4,PRE_MULTIPLY_SCALE_BITS
222
pmulhw xmm4,[GOTOFF(ebx,PW_F1414)] ; xmm4=tmp11
224
; To avoid overflow...
227
; tmp12 = -2.613125930 * z10 + z5;
229
; (This implementation)
230
; tmp12 = (-1.613125930 - 1) * z10 + z5;
231
; = -1.613125930 * z10 - z10 + z5;
235
pmulhw xmm5,[GOTOFF(ebx,PW_F1847)] ; xmm5=z5
236
pmulhw xmm0,[GOTOFF(ebx,PW_MF1613)]
237
pmulhw xmm2,[GOTOFF(ebx,PW_F1082)]
239
psubw xmm2,xmm5 ; xmm2=tmp10
240
paddw xmm0,xmm5 ; xmm0=tmp12
242
; -- Final output stage
244
psubw xmm0,xmm3 ; xmm0=tmp6
247
paddw xmm6,xmm3 ; xmm6=data0=(00 01 02 03 04 05 06 07)
248
paddw xmm7,xmm0 ; xmm7=data1=(10 11 12 13 14 15 16 17)
249
psubw xmm1,xmm3 ; xmm1=data7=(70 71 72 73 74 75 76 77)
250
psubw xmm5,xmm0 ; xmm5=data6=(60 61 62 63 64 65 66 67)
251
psubw xmm4,xmm0 ; xmm4=tmp5
253
movdqa xmm3,xmm6 ; transpose coefficients(phase 1)
254
punpcklwd xmm6,xmm7 ; xmm6=(00 10 01 11 02 12 03 13)
255
punpckhwd xmm3,xmm7 ; xmm3=(04 14 05 15 06 16 07 17)
256
movdqa xmm0,xmm5 ; transpose coefficients(phase 1)
257
punpcklwd xmm5,xmm1 ; xmm5=(60 70 61 71 62 72 63 73)
258
punpckhwd xmm0,xmm1 ; xmm0=(64 74 65 75 66 76 67 77)
260
movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp2
261
movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp3
263
movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(60 70 61 71 62 72 63 73)
264
movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(64 74 65 75 66 76 67 77)
266
paddw xmm2,xmm4 ; xmm2=tmp4
269
paddw xmm7,xmm4 ; xmm7=data2=(20 21 22 23 24 25 26 27)
270
paddw xmm1,xmm2 ; xmm1=data4=(40 41 42 43 44 45 46 47)
271
psubw xmm5,xmm4 ; xmm5=data5=(50 51 52 53 54 55 56 57)
272
psubw xmm0,xmm2 ; xmm0=data3=(30 31 32 33 34 35 36 37)
274
movdqa xmm4,xmm7 ; transpose coefficients(phase 1)
275
punpcklwd xmm7,xmm0 ; xmm7=(20 30 21 31 22 32 23 33)
276
punpckhwd xmm4,xmm0 ; xmm4=(24 34 25 35 26 36 27 37)
277
movdqa xmm2,xmm1 ; transpose coefficients(phase 1)
278
punpcklwd xmm1,xmm5 ; xmm1=(40 50 41 51 42 52 43 53)
279
punpckhwd xmm2,xmm5 ; xmm2=(44 54 45 55 46 56 47 57)
281
movdqa xmm0,xmm3 ; transpose coefficients(phase 2)
282
punpckldq xmm3,xmm4 ; xmm3=(04 14 24 34 05 15 25 35)
283
punpckhdq xmm0,xmm4 ; xmm0=(06 16 26 36 07 17 27 37)
284
movdqa xmm5,xmm6 ; transpose coefficients(phase 2)
285
punpckldq xmm6,xmm7 ; xmm6=(00 10 20 30 01 11 21 31)
286
punpckhdq xmm5,xmm7 ; xmm5=(02 12 22 32 03 13 23 33)
288
movdqa xmm4, XMMWORD [wk(0)] ; xmm4=(60 70 61 71 62 72 63 73)
289
movdqa xmm7, XMMWORD [wk(1)] ; xmm7=(64 74 65 75 66 76 67 77)
291
movdqa XMMWORD [wk(0)], xmm3 ; wk(0)=(04 14 24 34 05 15 25 35)
292
movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(06 16 26 36 07 17 27 37)
294
movdqa xmm3,xmm1 ; transpose coefficients(phase 2)
295
punpckldq xmm1,xmm4 ; xmm1=(40 50 60 70 41 51 61 71)
296
punpckhdq xmm3,xmm4 ; xmm3=(42 52 62 72 43 53 63 73)
297
movdqa xmm0,xmm2 ; transpose coefficients(phase 2)
298
punpckldq xmm2,xmm7 ; xmm2=(44 54 64 74 45 55 65 75)
299
punpckhdq xmm0,xmm7 ; xmm0=(46 56 66 76 47 57 67 77)
301
movdqa xmm4,xmm6 ; transpose coefficients(phase 3)
302
punpcklqdq xmm6,xmm1 ; xmm6=col0=(00 10 20 30 40 50 60 70)
303
punpckhqdq xmm4,xmm1 ; xmm4=col1=(01 11 21 31 41 51 61 71)
304
movdqa xmm7,xmm5 ; transpose coefficients(phase 3)
305
punpcklqdq xmm5,xmm3 ; xmm5=col2=(02 12 22 32 42 52 62 72)
306
punpckhqdq xmm7,xmm3 ; xmm7=col3=(03 13 23 33 43 53 63 73)
308
movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(04 14 24 34 05 15 25 35)
309
movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(06 16 26 36 07 17 27 37)
311
movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=col1
312
movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=col3
314
movdqa xmm4,xmm1 ; transpose coefficients(phase 3)
315
punpcklqdq xmm1,xmm2 ; xmm1=col4=(04 14 24 34 44 54 64 74)
316
punpckhqdq xmm4,xmm2 ; xmm4=col5=(05 15 25 35 45 55 65 75)
317
movdqa xmm7,xmm3 ; transpose coefficients(phase 3)
318
punpcklqdq xmm3,xmm0 ; xmm3=col6=(06 16 26 36 46 56 66 76)
319
punpckhqdq xmm7,xmm0 ; xmm7=col7=(07 17 27 37 47 57 67 77)
322
; -- Prefetch the next coefficient block
324
prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 0*32]
325
prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 1*32]
326
prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 2*32]
327
prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 3*32]
329
; ---- Pass 2: process rows from work array, store into output array.
331
mov eax, [original_ebp]
332
mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *)
333
mov eax, JDIMENSION [output_col(eax)]
337
; xmm6=col0, xmm5=col2, xmm1=col4, xmm3=col6
341
psubw xmm6,xmm1 ; xmm6=tmp11
343
paddw xmm2,xmm1 ; xmm2=tmp10
344
paddw xmm0,xmm3 ; xmm0=tmp13
346
psllw xmm5,PRE_MULTIPLY_SCALE_BITS
347
pmulhw xmm5,[GOTOFF(ebx,PW_F1414)]
348
psubw xmm5,xmm0 ; xmm5=tmp12
352
psubw xmm2,xmm0 ; xmm2=tmp3
353
psubw xmm6,xmm5 ; xmm6=tmp2
354
paddw xmm1,xmm0 ; xmm1=tmp0
355
paddw xmm3,xmm5 ; xmm3=tmp1
357
movdqa xmm0, XMMWORD [wk(0)] ; xmm0=col1
358
movdqa xmm5, XMMWORD [wk(1)] ; xmm5=col3
360
movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=tmp3
361
movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp2
365
; xmm0=col1, xmm5=col3, xmm4=col5, xmm7=col7
369
psubw xmm0,xmm7 ; xmm0=z12
370
psubw xmm4,xmm5 ; xmm4=z10
371
paddw xmm2,xmm7 ; xmm2=z11
372
paddw xmm6,xmm5 ; xmm6=z13
374
movdqa xmm7,xmm4 ; xmm7=z10(unscaled)
375
psllw xmm0,PRE_MULTIPLY_SCALE_BITS
376
psllw xmm4,PRE_MULTIPLY_SCALE_BITS
380
paddw xmm5,xmm6 ; xmm5=tmp7
382
psllw xmm2,PRE_MULTIPLY_SCALE_BITS
383
pmulhw xmm2,[GOTOFF(ebx,PW_F1414)] ; xmm2=tmp11
385
; To avoid overflow...
388
; tmp12 = -2.613125930 * z10 + z5;
390
; (This implementation)
391
; tmp12 = (-1.613125930 - 1) * z10 + z5;
392
; = -1.613125930 * z10 - z10 + z5;
396
pmulhw xmm4,[GOTOFF(ebx,PW_F1847)] ; xmm4=z5
397
pmulhw xmm6,[GOTOFF(ebx,PW_MF1613)]
398
pmulhw xmm0,[GOTOFF(ebx,PW_F1082)]
400
psubw xmm0,xmm4 ; xmm0=tmp10
401
paddw xmm6,xmm4 ; xmm6=tmp12
403
; -- Final output stage
405
psubw xmm6,xmm5 ; xmm6=tmp6
408
paddw xmm1,xmm5 ; xmm1=data0=(00 10 20 30 40 50 60 70)
409
paddw xmm3,xmm6 ; xmm3=data1=(01 11 21 31 41 51 61 71)
410
psraw xmm1,(PASS1_BITS+3) ; descale
411
psraw xmm3,(PASS1_BITS+3) ; descale
412
psubw xmm7,xmm5 ; xmm7=data7=(07 17 27 37 47 57 67 77)
413
psubw xmm4,xmm6 ; xmm4=data6=(06 16 26 36 46 56 66 76)
414
psraw xmm7,(PASS1_BITS+3) ; descale
415
psraw xmm4,(PASS1_BITS+3) ; descale
416
psubw xmm2,xmm6 ; xmm2=tmp5
418
packsswb xmm1,xmm4 ; xmm1=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76)
419
packsswb xmm3,xmm7 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77)
421
movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp2
422
movdqa xmm6, XMMWORD [wk(0)] ; xmm6=tmp3
424
paddw xmm0,xmm2 ; xmm0=tmp4
427
paddw xmm5,xmm2 ; xmm5=data2=(02 12 22 32 42 52 62 72)
428
paddw xmm6,xmm0 ; xmm6=data4=(04 14 24 34 44 54 64 74)
429
psraw xmm5,(PASS1_BITS+3) ; descale
430
psraw xmm6,(PASS1_BITS+3) ; descale
431
psubw xmm4,xmm2 ; xmm4=data5=(05 15 25 35 45 55 65 75)
432
psubw xmm7,xmm0 ; xmm7=data3=(03 13 23 33 43 53 63 73)
433
psraw xmm4,(PASS1_BITS+3) ; descale
434
psraw xmm7,(PASS1_BITS+3) ; descale
436
movdqa xmm2,[GOTOFF(ebx,PB_CENTERJSAMP)] ; xmm2=[PB_CENTERJSAMP]
438
packsswb xmm5,xmm6 ; xmm5=(02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74)
439
packsswb xmm7,xmm4 ; xmm7=(03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75)
446
movdqa xmm0,xmm1 ; transpose coefficients(phase 1)
447
punpcklbw xmm1,xmm3 ; xmm1=(00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71)
448
punpckhbw xmm0,xmm3 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77)
449
movdqa xmm6,xmm5 ; transpose coefficients(phase 1)
450
punpcklbw xmm5,xmm7 ; xmm5=(02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73)
451
punpckhbw xmm6,xmm7 ; xmm6=(04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75)
453
movdqa xmm4,xmm1 ; transpose coefficients(phase 2)
454
punpcklwd xmm1,xmm5 ; xmm1=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33)
455
punpckhwd xmm4,xmm5 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73)
456
movdqa xmm2,xmm6 ; transpose coefficients(phase 2)
457
punpcklwd xmm6,xmm0 ; xmm6=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37)
458
punpckhwd xmm2,xmm0 ; xmm2=(44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77)
460
movdqa xmm3,xmm1 ; transpose coefficients(phase 3)
461
punpckldq xmm1,xmm6 ; xmm1=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17)
462
punpckhdq xmm3,xmm6 ; xmm3=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37)
463
movdqa xmm7,xmm4 ; transpose coefficients(phase 3)
464
punpckldq xmm4,xmm2 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57)
465
punpckhdq xmm7,xmm2 ; xmm7=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77)
467
pshufd xmm5,xmm1,0x4E ; xmm5=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07)
468
pshufd xmm0,xmm3,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27)
469
pshufd xmm6,xmm4,0x4E ; xmm6=(50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47)
470
pshufd xmm2,xmm7,0x4E ; xmm2=(70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67)
472
mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW]
473
mov esi, JSAMPROW [edi+2*SIZEOF_JSAMPROW]
474
movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm1
475
movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm3
476
mov edx, JSAMPROW [edi+4*SIZEOF_JSAMPROW]
477
mov esi, JSAMPROW [edi+6*SIZEOF_JSAMPROW]
478
movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm4
479
movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm7
481
mov edx, JSAMPROW [edi+1*SIZEOF_JSAMPROW]
482
mov esi, JSAMPROW [edi+3*SIZEOF_JSAMPROW]
483
movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm5
484
movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm0
485
mov edx, JSAMPROW [edi+5*SIZEOF_JSAMPROW]
486
mov esi, JSAMPROW [edi+7*SIZEOF_JSAMPROW]
487
movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm6
488
movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm2
492
; pop edx ; need not be preserved
495
mov esp,ebp ; esp <- aligned ebp
496
pop esp ; esp <- original ebp
500
; For some reason, the OS X linker does not honor the request to align the
501
; segment unless we do this.