media/libjpeg/simd/jdclrss2-64.asm@b8a032363ba2
media/libjpeg/simd/jdclrss2-64.asm
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 ;
2 ; jdclrss2-64.asm - colorspace conversion (64-bit SSE2)
3 ;
4 ; Copyright 2009, 2012 Pierre Ossman <ossman@cendio.se> for Cendio AB
5 ; Copyright 2009, 2012 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 ; [TAB8]
20 %include "jcolsamp.inc"
22 ; --------------------------------------------------------------------------
23 ;
24 ; Convert some rows of samples to the output colorspace.
25 ;
26 ; GLOBAL(void)
27 ; jsimd_ycc_rgb_convert_sse2 (JDIMENSION out_width,
28 ; JSAMPIMAGE input_buf, JDIMENSION input_row,
29 ; JSAMPARRAY output_buf, int num_rows)
30 ;
32 ; r10 = JDIMENSION out_width
33 ; r11 = JSAMPIMAGE input_buf
34 ; r12 = JDIMENSION input_row
35 ; r13 = JSAMPARRAY output_buf
36 ; r14 = int num_rows
38 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
39 %define WK_NUM 2
41 align 16
42 global EXTN(jsimd_ycc_rgb_convert_sse2)
44 EXTN(jsimd_ycc_rgb_convert_sse2):
45 push rbp
46 mov rax,rsp ; rax = original rbp
47 sub rsp, byte 4
48 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
49 mov [rsp],rax
50 mov rbp,rsp ; rbp = aligned rbp
51 lea rsp, [wk(0)]
52 collect_args
53 push rbx
55 mov rcx, r10 ; num_cols
56 test rcx,rcx
57 jz near .return
59 push rcx
61 mov rdi, r11
62 mov rcx, r12
63 mov rsi, JSAMPARRAY [rdi+0*SIZEOF_JSAMPARRAY]
64 mov rbx, JSAMPARRAY [rdi+1*SIZEOF_JSAMPARRAY]
65 mov rdx, JSAMPARRAY [rdi+2*SIZEOF_JSAMPARRAY]
66 lea rsi, [rsi+rcx*SIZEOF_JSAMPROW]
67 lea rbx, [rbx+rcx*SIZEOF_JSAMPROW]
68 lea rdx, [rdx+rcx*SIZEOF_JSAMPROW]
70 pop rcx
72 mov rdi, r13
73 mov eax, r14d
74 test rax,rax
75 jle near .return
76 .rowloop:
77 push rax
78 push rdi
79 push rdx
80 push rbx
81 push rsi
82 push rcx ; col
84 mov rsi, JSAMPROW [rsi] ; inptr0
85 mov rbx, JSAMPROW [rbx] ; inptr1
86 mov rdx, JSAMPROW [rdx] ; inptr2
87 mov rdi, JSAMPROW [rdi] ; outptr
88 .columnloop:
90 movdqa xmm5, XMMWORD [rbx] ; xmm5=Cb(0123456789ABCDEF)
91 movdqa xmm1, XMMWORD [rdx] ; xmm1=Cr(0123456789ABCDEF)
93 pcmpeqw xmm4,xmm4
94 pcmpeqw xmm7,xmm7
95 psrlw xmm4,BYTE_BIT
96 psllw xmm7,7 ; xmm7={0xFF80 0xFF80 0xFF80 0xFF80 ..}
97 movdqa xmm0,xmm4 ; xmm0=xmm4={0xFF 0x00 0xFF 0x00 ..}
99 pand xmm4,xmm5 ; xmm4=Cb(02468ACE)=CbE
100 psrlw xmm5,BYTE_BIT ; xmm5=Cb(13579BDF)=CbO
101 pand xmm0,xmm1 ; xmm0=Cr(02468ACE)=CrE
102 psrlw xmm1,BYTE_BIT ; xmm1=Cr(13579BDF)=CrO
104 paddw xmm4,xmm7
105 paddw xmm5,xmm7
106 paddw xmm0,xmm7
107 paddw xmm1,xmm7
109 ; (Original)
110 ; R = Y + 1.40200 * Cr
111 ; G = Y - 0.34414 * Cb - 0.71414 * Cr
112 ; B = Y + 1.77200 * Cb
113 ;
114 ; (This implementation)
115 ; R = Y + 0.40200 * Cr + Cr
116 ; G = Y - 0.34414 * Cb + 0.28586 * Cr - Cr
117 ; B = Y - 0.22800 * Cb + Cb + Cb
119 movdqa xmm2,xmm4 ; xmm2=CbE
120 movdqa xmm3,xmm5 ; xmm3=CbO
121 paddw xmm4,xmm4 ; xmm4=2*CbE
122 paddw xmm5,xmm5 ; xmm5=2*CbO
123 movdqa xmm6,xmm0 ; xmm6=CrE
124 movdqa xmm7,xmm1 ; xmm7=CrO
125 paddw xmm0,xmm0 ; xmm0=2*CrE
126 paddw xmm1,xmm1 ; xmm1=2*CrO
128 pmulhw xmm4,[rel PW_MF0228] ; xmm4=(2*CbE * -FIX(0.22800))
129 pmulhw xmm5,[rel PW_MF0228] ; xmm5=(2*CbO * -FIX(0.22800))
130 pmulhw xmm0,[rel PW_F0402] ; xmm0=(2*CrE * FIX(0.40200))
131 pmulhw xmm1,[rel PW_F0402] ; xmm1=(2*CrO * FIX(0.40200))
133 paddw xmm4,[rel PW_ONE]
134 paddw xmm5,[rel PW_ONE]
135 psraw xmm4,1 ; xmm4=(CbE * -FIX(0.22800))
136 psraw xmm5,1 ; xmm5=(CbO * -FIX(0.22800))
137 paddw xmm0,[rel PW_ONE]
138 paddw xmm1,[rel PW_ONE]
139 psraw xmm0,1 ; xmm0=(CrE * FIX(0.40200))
140 psraw xmm1,1 ; xmm1=(CrO * FIX(0.40200))
142 paddw xmm4,xmm2
143 paddw xmm5,xmm3
144 paddw xmm4,xmm2 ; xmm4=(CbE * FIX(1.77200))=(B-Y)E
145 paddw xmm5,xmm3 ; xmm5=(CbO * FIX(1.77200))=(B-Y)O
146 paddw xmm0,xmm6 ; xmm0=(CrE * FIX(1.40200))=(R-Y)E
147 paddw xmm1,xmm7 ; xmm1=(CrO * FIX(1.40200))=(R-Y)O
149 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=(B-Y)E
150 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(B-Y)O
152 movdqa xmm4,xmm2
153 movdqa xmm5,xmm3
154 punpcklwd xmm2,xmm6
155 punpckhwd xmm4,xmm6
156 pmaddwd xmm2,[rel PW_MF0344_F0285]
157 pmaddwd xmm4,[rel PW_MF0344_F0285]
158 punpcklwd xmm3,xmm7
159 punpckhwd xmm5,xmm7
160 pmaddwd xmm3,[rel PW_MF0344_F0285]
161 pmaddwd xmm5,[rel PW_MF0344_F0285]
163 paddd xmm2,[rel PD_ONEHALF]
164 paddd xmm4,[rel PD_ONEHALF]
165 psrad xmm2,SCALEBITS
166 psrad xmm4,SCALEBITS
167 paddd xmm3,[rel PD_ONEHALF]
168 paddd xmm5,[rel PD_ONEHALF]
169 psrad xmm3,SCALEBITS
170 psrad xmm5,SCALEBITS
172 packssdw xmm2,xmm4 ; xmm2=CbE*-FIX(0.344)+CrE*FIX(0.285)
173 packssdw xmm3,xmm5 ; xmm3=CbO*-FIX(0.344)+CrO*FIX(0.285)
174 psubw xmm2,xmm6 ; xmm2=CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E
175 psubw xmm3,xmm7 ; xmm3=CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O
177 movdqa xmm5, XMMWORD [rsi] ; xmm5=Y(0123456789ABCDEF)
179 pcmpeqw xmm4,xmm4
180 psrlw xmm4,BYTE_BIT ; xmm4={0xFF 0x00 0xFF 0x00 ..}
181 pand xmm4,xmm5 ; xmm4=Y(02468ACE)=YE
182 psrlw xmm5,BYTE_BIT ; xmm5=Y(13579BDF)=YO
184 paddw xmm0,xmm4 ; xmm0=((R-Y)E+YE)=RE=R(02468ACE)
185 paddw xmm1,xmm5 ; xmm1=((R-Y)O+YO)=RO=R(13579BDF)
186 packuswb xmm0,xmm0 ; xmm0=R(02468ACE********)
187 packuswb xmm1,xmm1 ; xmm1=R(13579BDF********)
189 paddw xmm2,xmm4 ; xmm2=((G-Y)E+YE)=GE=G(02468ACE)
190 paddw xmm3,xmm5 ; xmm3=((G-Y)O+YO)=GO=G(13579BDF)
191 packuswb xmm2,xmm2 ; xmm2=G(02468ACE********)
192 packuswb xmm3,xmm3 ; xmm3=G(13579BDF********)
194 paddw xmm4, XMMWORD [wk(0)] ; xmm4=(YE+(B-Y)E)=BE=B(02468ACE)
195 paddw xmm5, XMMWORD [wk(1)] ; xmm5=(YO+(B-Y)O)=BO=B(13579BDF)
196 packuswb xmm4,xmm4 ; xmm4=B(02468ACE********)
197 packuswb xmm5,xmm5 ; xmm5=B(13579BDF********)
199 %if RGB_PIXELSIZE == 3 ; ---------------
201 ; xmmA=(00 02 04 06 08 0A 0C 0E **), xmmB=(01 03 05 07 09 0B 0D 0F **)
202 ; xmmC=(10 12 14 16 18 1A 1C 1E **), xmmD=(11 13 15 17 19 1B 1D 1F **)
203 ; xmmE=(20 22 24 26 28 2A 2C 2E **), xmmF=(21 23 25 27 29 2B 2D 2F **)
204 ; xmmG=(** ** ** ** ** ** ** ** **), xmmH=(** ** ** ** ** ** ** ** **)
206 punpcklbw xmmA,xmmC ; xmmA=(00 10 02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E)
207 punpcklbw xmmE,xmmB ; xmmE=(20 01 22 03 24 05 26 07 28 09 2A 0B 2C 0D 2E 0F)
208 punpcklbw xmmD,xmmF ; xmmD=(11 21 13 23 15 25 17 27 19 29 1B 2B 1D 2D 1F 2F)
210 movdqa xmmG,xmmA
211 movdqa xmmH,xmmA
212 punpcklwd xmmA,xmmE ; xmmA=(00 10 20 01 02 12 22 03 04 14 24 05 06 16 26 07)
213 punpckhwd xmmG,xmmE ; xmmG=(08 18 28 09 0A 1A 2A 0B 0C 1C 2C 0D 0E 1E 2E 0F)
215 psrldq xmmH,2 ; xmmH=(02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E -- --)
216 psrldq xmmE,2 ; xmmE=(22 03 24 05 26 07 28 09 2A 0B 2C 0D 2E 0F -- --)
218 movdqa xmmC,xmmD
219 movdqa xmmB,xmmD
220 punpcklwd xmmD,xmmH ; xmmD=(11 21 02 12 13 23 04 14 15 25 06 16 17 27 08 18)
221 punpckhwd xmmC,xmmH ; xmmC=(19 29 0A 1A 1B 2B 0C 1C 1D 2D 0E 1E 1F 2F -- --)
223 psrldq xmmB,2 ; xmmB=(13 23 15 25 17 27 19 29 1B 2B 1D 2D 1F 2F -- --)
225 movdqa xmmF,xmmE
226 punpcklwd xmmE,xmmB ; xmmE=(22 03 13 23 24 05 15 25 26 07 17 27 28 09 19 29)
227 punpckhwd xmmF,xmmB ; xmmF=(2A 0B 1B 2B 2C 0D 1D 2D 2E 0F 1F 2F -- -- -- --)
229 pshufd xmmH,xmmA,0x4E; xmmH=(04 14 24 05 06 16 26 07 00 10 20 01 02 12 22 03)
230 movdqa xmmB,xmmE
231 punpckldq xmmA,xmmD ; xmmA=(00 10 20 01 11 21 02 12 02 12 22 03 13 23 04 14)
232 punpckldq xmmE,xmmH ; xmmE=(22 03 13 23 04 14 24 05 24 05 15 25 06 16 26 07)
233 punpckhdq xmmD,xmmB ; xmmD=(15 25 06 16 26 07 17 27 17 27 08 18 28 09 19 29)
235 pshufd xmmH,xmmG,0x4E; xmmH=(0C 1C 2C 0D 0E 1E 2E 0F 08 18 28 09 0A 1A 2A 0B)
236 movdqa xmmB,xmmF
237 punpckldq xmmG,xmmC ; xmmG=(08 18 28 09 19 29 0A 1A 0A 1A 2A 0B 1B 2B 0C 1C)
238 punpckldq xmmF,xmmH ; xmmF=(2A 0B 1B 2B 0C 1C 2C 0D 2C 0D 1D 2D 0E 1E 2E 0F)
239 punpckhdq xmmC,xmmB ; xmmC=(1D 2D 0E 1E 2E 0F 1F 2F 1F 2F -- -- -- -- -- --)
241 punpcklqdq xmmA,xmmE ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05)
242 punpcklqdq xmmD,xmmG ; xmmD=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A)
243 punpcklqdq xmmF,xmmC ; xmmF=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F)
245 cmp rcx, byte SIZEOF_XMMWORD
246 jb short .column_st32
248 test rdi, SIZEOF_XMMWORD-1
249 jnz short .out1
250 ; --(aligned)-------------------
251 movntdq XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
252 movntdq XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
253 movntdq XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmF
254 jmp short .out0
255 .out1: ; --(unaligned)-----------------
256 movdqu XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
257 movdqu XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
258 movdqu XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmF
259 .out0:
260 add rdi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; outptr
261 sub rcx, byte SIZEOF_XMMWORD
262 jz near .nextrow
264 add rsi, byte SIZEOF_XMMWORD ; inptr0
265 add rbx, byte SIZEOF_XMMWORD ; inptr1
266 add rdx, byte SIZEOF_XMMWORD ; inptr2
267 jmp near .columnloop
269 .column_st32:
270 lea rcx, [rcx+rcx*2] ; imul ecx, RGB_PIXELSIZE
271 cmp rcx, byte 2*SIZEOF_XMMWORD
272 jb short .column_st16
273 movdqu XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
274 movdqu XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
275 add rdi, byte 2*SIZEOF_XMMWORD ; outptr
276 movdqa xmmA,xmmF
277 sub rcx, byte 2*SIZEOF_XMMWORD
278 jmp short .column_st15
279 .column_st16:
280 cmp rcx, byte SIZEOF_XMMWORD
281 jb short .column_st15
282 movdqu XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
283 add rdi, byte SIZEOF_XMMWORD ; outptr
284 movdqa xmmA,xmmD
285 sub rcx, byte SIZEOF_XMMWORD
286 .column_st15:
287 ; Store the lower 8 bytes of xmmA to the output when it has enough
288 ; space.
289 cmp rcx, byte SIZEOF_MMWORD
290 jb short .column_st7
291 movq XMM_MMWORD [rdi], xmmA
292 add rdi, byte SIZEOF_MMWORD
293 sub rcx, byte SIZEOF_MMWORD
294 psrldq xmmA, SIZEOF_MMWORD
295 .column_st7:
296 ; Store the lower 4 bytes of xmmA to the output when it has enough
297 ; space.
298 cmp rcx, byte SIZEOF_DWORD
299 jb short .column_st3
300 movd XMM_DWORD [rdi], xmmA
301 add rdi, byte SIZEOF_DWORD
302 sub rcx, byte SIZEOF_DWORD
303 psrldq xmmA, SIZEOF_DWORD
304 .column_st3:
305 ; Store the lower 2 bytes of rax to the output when it has enough
306 ; space.
307 movd eax, xmmA
308 cmp rcx, byte SIZEOF_WORD
309 jb short .column_st1
310 mov WORD [rdi], ax
311 add rdi, byte SIZEOF_WORD
312 sub rcx, byte SIZEOF_WORD
313 shr rax, 16
314 .column_st1:
315 ; Store the lower 1 byte of rax to the output when it has enough
316 ; space.
317 test rcx, rcx
318 jz short .nextrow
319 mov BYTE [rdi], al
321 %else ; RGB_PIXELSIZE == 4 ; -----------
323 %ifdef RGBX_FILLER_0XFF
324 pcmpeqb xmm6,xmm6 ; xmm6=XE=X(02468ACE********)
325 pcmpeqb xmm7,xmm7 ; xmm7=XO=X(13579BDF********)
326 %else
327 pxor xmm6,xmm6 ; xmm6=XE=X(02468ACE********)
328 pxor xmm7,xmm7 ; xmm7=XO=X(13579BDF********)
329 %endif
330 ; xmmA=(00 02 04 06 08 0A 0C 0E **), xmmB=(01 03 05 07 09 0B 0D 0F **)
331 ; xmmC=(10 12 14 16 18 1A 1C 1E **), xmmD=(11 13 15 17 19 1B 1D 1F **)
332 ; xmmE=(20 22 24 26 28 2A 2C 2E **), xmmF=(21 23 25 27 29 2B 2D 2F **)
333 ; xmmG=(30 32 34 36 38 3A 3C 3E **), xmmH=(31 33 35 37 39 3B 3D 3F **)
335 punpcklbw xmmA,xmmC ; xmmA=(00 10 02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E)
336 punpcklbw xmmE,xmmG ; xmmE=(20 30 22 32 24 34 26 36 28 38 2A 3A 2C 3C 2E 3E)
337 punpcklbw xmmB,xmmD ; xmmB=(01 11 03 13 05 15 07 17 09 19 0B 1B 0D 1D 0F 1F)
338 punpcklbw xmmF,xmmH ; xmmF=(21 31 23 33 25 35 27 37 29 39 2B 3B 2D 3D 2F 3F)
340 movdqa xmmC,xmmA
341 punpcklwd xmmA,xmmE ; xmmA=(00 10 20 30 02 12 22 32 04 14 24 34 06 16 26 36)
342 punpckhwd xmmC,xmmE ; xmmC=(08 18 28 38 0A 1A 2A 3A 0C 1C 2C 3C 0E 1E 2E 3E)
343 movdqa xmmG,xmmB
344 punpcklwd xmmB,xmmF ; xmmB=(01 11 21 31 03 13 23 33 05 15 25 35 07 17 27 37)
345 punpckhwd xmmG,xmmF ; xmmG=(09 19 29 39 0B 1B 2B 3B 0D 1D 2D 3D 0F 1F 2F 3F)
347 movdqa xmmD,xmmA
348 punpckldq xmmA,xmmB ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33)
349 punpckhdq xmmD,xmmB ; xmmD=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37)
350 movdqa xmmH,xmmC
351 punpckldq xmmC,xmmG ; xmmC=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B)
352 punpckhdq xmmH,xmmG ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F)
354 cmp rcx, byte SIZEOF_XMMWORD
355 jb short .column_st32
357 test rdi, SIZEOF_XMMWORD-1
358 jnz short .out1
359 ; --(aligned)-------------------
360 movntdq XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
361 movntdq XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
362 movntdq XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmC
363 movntdq XMMWORD [rdi+3*SIZEOF_XMMWORD], xmmH
364 jmp short .out0
365 .out1: ; --(unaligned)-----------------
366 movdqu XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
367 movdqu XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
368 movdqu XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmC
369 movdqu XMMWORD [rdi+3*SIZEOF_XMMWORD], xmmH
370 .out0:
371 add rdi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; outptr
372 sub rcx, byte SIZEOF_XMMWORD
373 jz near .nextrow
375 add rsi, byte SIZEOF_XMMWORD ; inptr0
376 add rbx, byte SIZEOF_XMMWORD ; inptr1
377 add rdx, byte SIZEOF_XMMWORD ; inptr2
378 jmp near .columnloop
380 .column_st32:
381 cmp rcx, byte SIZEOF_XMMWORD/2
382 jb short .column_st16
383 movdqu XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
384 movdqu XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
385 add rdi, byte 2*SIZEOF_XMMWORD ; outptr
386 movdqa xmmA,xmmC
387 movdqa xmmD,xmmH
388 sub rcx, byte SIZEOF_XMMWORD/2
389 .column_st16:
390 cmp rcx, byte SIZEOF_XMMWORD/4
391 jb short .column_st15
392 movdqu XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
393 add rdi, byte SIZEOF_XMMWORD ; outptr
394 movdqa xmmA,xmmD
395 sub rcx, byte SIZEOF_XMMWORD/4
396 .column_st15:
397 ; Store two pixels (8 bytes) of xmmA to the output when it has enough
398 ; space.
399 cmp rcx, byte SIZEOF_XMMWORD/8
400 jb short .column_st7
401 movq MMWORD [rdi], xmmA
402 add rdi, byte SIZEOF_XMMWORD/8*4
403 sub rcx, byte SIZEOF_XMMWORD/8
404 psrldq xmmA, SIZEOF_XMMWORD/8*4
405 .column_st7:
406 ; Store one pixel (4 bytes) of xmmA to the output when it has enough
407 ; space.
408 test rcx, rcx
409 jz short .nextrow
410 movd XMM_DWORD [rdi], xmmA
412 %endif ; RGB_PIXELSIZE ; ---------------
414 .nextrow:
415 pop rcx
416 pop rsi
417 pop rbx
418 pop rdx
419 pop rdi
420 pop rax
422 add rsi, byte SIZEOF_JSAMPROW
423 add rbx, byte SIZEOF_JSAMPROW
424 add rdx, byte SIZEOF_JSAMPROW
425 add rdi, byte SIZEOF_JSAMPROW ; output_buf
426 dec rax ; num_rows
427 jg near .rowloop
429 sfence ; flush the write buffer
431 .return:
432 pop rbx
433 uncollect_args
434 mov rsp,rbp ; rsp <- aligned rbp
435 pop rsp ; rsp <- original rbp
436 pop rbp
437 ret
439 ; For some reason, the OS X linker does not honor the request to align the
440 ; segment unless we do this.
441 align 16
