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gerrit-public.fairphone.software / platform / external / libjpeg-turbo / b2817f52517361caff3dbab7373abc1b791f3246 / . / simd / jcgryext-mmx.asm
blob: 13b9600883babf539a31ac118b991bf88f51ce4e [file] [log] [blame]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]1;
DRC72130be2014-05-09 20:14:26 +0000[diff] [blame]2; jcgryext.asm - grayscale colorspace conversion (MMX)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]3;
4; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5; Copyright 2011 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]
19
20%include "jcolsamp.inc"
21
22; --------------------------------------------------------------------------
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]23;
24; Convert some rows of samples to the output colorspace.
25;
26; GLOBAL(void)
27; jsimd_rgb_gray_convert_mmx (JDIMENSION img_width,
28; JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
29; JDIMENSION output_row, int num_rows);
30;
31
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]32%define img_width(b) (b)+8 ; JDIMENSION img_width
33%define input_buf(b) (b)+12 ; JSAMPARRAY input_buf
34%define output_buf(b) (b)+16 ; JSAMPIMAGE output_buf
35%define output_row(b) (b)+20 ; JDIMENSION output_row
36%define num_rows(b) (b)+24 ; int num_rows
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]37
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]38%define original_ebp ebp+0
39%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM]
40%define WK_NUM 2
41%define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]42
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]43 align 16
44 global EXTN(jsimd_rgb_gray_convert_mmx)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]45
46EXTN(jsimd_rgb_gray_convert_mmx):
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]47 push ebp
48 mov eax,esp ; eax = original ebp
49 sub esp, byte 4
50 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits
51 mov [esp],eax
52 mov ebp,esp ; ebp = aligned ebp
53 lea esp, [wk(0)]
54 pushpic eax ; make a room for GOT address
55 push ebx
56; push ecx ; need not be preserved
57; push edx ; need not be preserved
58 push esi
59 push edi
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]60
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]61 get_GOT ebx ; get GOT address
62 movpic POINTER [gotptr], ebx ; save GOT address
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]63
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]64 mov ecx, JDIMENSION [img_width(eax)] ; num_cols
65 test ecx,ecx
66 jz near .return
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]67
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]68 push ecx
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]69
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]70 mov esi, JSAMPIMAGE [output_buf(eax)]
71 mov ecx, JDIMENSION [output_row(eax)]
72 mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY]
73 lea edi, [edi+ecx*SIZEOF_JSAMPROW]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]74
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]75 pop ecx
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]76
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]77 mov esi, JSAMPARRAY [input_buf(eax)]
78 mov eax, INT [num_rows(eax)]
79 test eax,eax
80 jle near .return
81 alignx 16,7
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]82.rowloop:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]83 pushpic eax
84 push edi
85 push esi
86 push ecx ; col
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]87
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]88 mov esi, JSAMPROW [esi] ; inptr
89 mov edi, JSAMPROW [edi] ; outptr0
90 movpic eax, POINTER [gotptr] ; load GOT address (eax)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]91
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]92 cmp ecx, byte SIZEOF_MMWORD
93 jae short .columnloop
94 alignx 16,7
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]95
96%if RGB_PIXELSIZE == 3 ; ---------------
97
98.column_ld1:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]99 push eax
100 push edx
101 lea ecx,[ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE
102 test cl, SIZEOF_BYTE
103 jz short .column_ld2
104 sub ecx, byte SIZEOF_BYTE
105 xor eax,eax
106 mov al, BYTE [esi+ecx]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]107.column_ld2:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]108 test cl, SIZEOF_WORD
109 jz short .column_ld4
110 sub ecx, byte SIZEOF_WORD
111 xor edx,edx
112 mov dx, WORD [esi+ecx]
113 shl eax, WORD_BIT
114 or eax,edx
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]115.column_ld4:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]116 movd mmA,eax
117 pop edx
118 pop eax
119 test cl, SIZEOF_DWORD
120 jz short .column_ld8
121 sub ecx, byte SIZEOF_DWORD
122 movd mmG, DWORD [esi+ecx]
123 psllq mmA, DWORD_BIT
124 por mmA,mmG
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]125.column_ld8:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]126 test cl, SIZEOF_MMWORD
127 jz short .column_ld16
128 movq mmG,mmA
129 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
130 mov ecx, SIZEOF_MMWORD
131 jmp short .rgb_gray_cnv
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]132.column_ld16:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]133 test cl, 2*SIZEOF_MMWORD
134 mov ecx, SIZEOF_MMWORD
135 jz short .rgb_gray_cnv
136 movq mmF,mmA
137 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
138 movq mmG, MMWORD [esi+1*SIZEOF_MMWORD]
139 jmp short .rgb_gray_cnv
140 alignx 16,7
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]141
142.columnloop:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]143 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
144 movq mmG, MMWORD [esi+1*SIZEOF_MMWORD]
145 movq mmF, MMWORD [esi+2*SIZEOF_MMWORD]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]146
147.rgb_gray_cnv:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]148 ; mmA=(00 10 20 01 11 21 02 12)
149 ; mmG=(22 03 13 23 04 14 24 05)
150 ; mmF=(15 25 06 16 26 07 17 27)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]151
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]152 movq mmD,mmA
153 psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 10 20 01)
154 psrlq mmD,4*BYTE_BIT ; mmD=(11 21 02 12 -- -- -- --)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]155
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]156 punpckhbw mmA,mmG ; mmA=(00 04 10 14 20 24 01 05)
157 psllq mmG,4*BYTE_BIT ; mmG=(-- -- -- -- 22 03 13 23)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]158
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]159 punpcklbw mmD,mmF ; mmD=(11 15 21 25 02 06 12 16)
160 punpckhbw mmG,mmF ; mmG=(22 26 03 07 13 17 23 27)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]161
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]162 movq mmE,mmA
163 psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 04 10 14)
164 psrlq mmE,4*BYTE_BIT ; mmE=(20 24 01 05 -- -- -- --)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]165
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]166 punpckhbw mmA,mmD ; mmA=(00 02 04 06 10 12 14 16)
167 psllq mmD,4*BYTE_BIT ; mmD=(-- -- -- -- 11 15 21 25)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]168
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]169 punpcklbw mmE,mmG ; mmE=(20 22 24 26 01 03 05 07)
170 punpckhbw mmD,mmG ; mmD=(11 13 15 17 21 23 25 27)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]171
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]172 pxor mmH,mmH
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]173
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]174 movq mmC,mmA
175 punpcklbw mmA,mmH ; mmA=(00 02 04 06)
176 punpckhbw mmC,mmH ; mmC=(10 12 14 16)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]177
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]178 movq mmB,mmE
179 punpcklbw mmE,mmH ; mmE=(20 22 24 26)
180 punpckhbw mmB,mmH ; mmB=(01 03 05 07)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]181
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]182 movq mmF,mmD
183 punpcklbw mmD,mmH ; mmD=(11 13 15 17)
184 punpckhbw mmF,mmH ; mmF=(21 23 25 27)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]185
186%else ; RGB_PIXELSIZE == 4 ; -----------
187
188.column_ld1:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]189 test cl, SIZEOF_MMWORD/8
190 jz short .column_ld2
191 sub ecx, byte SIZEOF_MMWORD/8
192 movd mmA, DWORD [esi+ecx*RGB_PIXELSIZE]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]193.column_ld2:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]194 test cl, SIZEOF_MMWORD/4
195 jz short .column_ld4
196 sub ecx, byte SIZEOF_MMWORD/4
197 movq mmF,mmA
198 movq mmA, MMWORD [esi+ecx*RGB_PIXELSIZE]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]199.column_ld4:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]200 test cl, SIZEOF_MMWORD/2
201 mov ecx, SIZEOF_MMWORD
202 jz short .rgb_gray_cnv
203 movq mmD,mmA
204 movq mmC,mmF
205 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
206 movq mmF, MMWORD [esi+1*SIZEOF_MMWORD]
207 jmp short .rgb_gray_cnv
208 alignx 16,7
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]209
210.columnloop:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]211 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
212 movq mmF, MMWORD [esi+1*SIZEOF_MMWORD]
213 movq mmD, MMWORD [esi+2*SIZEOF_MMWORD]
214 movq mmC, MMWORD [esi+3*SIZEOF_MMWORD]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]215
216.rgb_gray_cnv:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]217 ; mmA=(00 10 20 30 01 11 21 31)
218 ; mmF=(02 12 22 32 03 13 23 33)
219 ; mmD=(04 14 24 34 05 15 25 35)
220 ; mmC=(06 16 26 36 07 17 27 37)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]221
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]222 movq mmB,mmA
223 punpcklbw mmA,mmF ; mmA=(00 02 10 12 20 22 30 32)
224 punpckhbw mmB,mmF ; mmB=(01 03 11 13 21 23 31 33)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]225
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]226 movq mmG,mmD
227 punpcklbw mmD,mmC ; mmD=(04 06 14 16 24 26 34 36)
228 punpckhbw mmG,mmC ; mmG=(05 07 15 17 25 27 35 37)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]229
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]230 movq mmE,mmA
231 punpcklwd mmA,mmD ; mmA=(00 02 04 06 10 12 14 16)
232 punpckhwd mmE,mmD ; mmE=(20 22 24 26 30 32 34 36)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]233
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]234 movq mmH,mmB
235 punpcklwd mmB,mmG ; mmB=(01 03 05 07 11 13 15 17)
236 punpckhwd mmH,mmG ; mmH=(21 23 25 27 31 33 35 37)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]237
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]238 pxor mmF,mmF
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]239
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]240 movq mmC,mmA
241 punpcklbw mmA,mmF ; mmA=(00 02 04 06)
242 punpckhbw mmC,mmF ; mmC=(10 12 14 16)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]243
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]244 movq mmD,mmB
245 punpcklbw mmB,mmF ; mmB=(01 03 05 07)
246 punpckhbw mmD,mmF ; mmD=(11 13 15 17)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]247
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]248 movq mmG,mmE
249 punpcklbw mmE,mmF ; mmE=(20 22 24 26)
250 punpckhbw mmG,mmF ; mmG=(30 32 34 36)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]251
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]252 punpcklbw mmF,mmH
253 punpckhbw mmH,mmH
254 psrlw mmF,BYTE_BIT ; mmF=(21 23 25 27)
255 psrlw mmH,BYTE_BIT ; mmH=(31 33 35 37)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]256
257%endif ; RGB_PIXELSIZE ; ---------------
258
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]259 ; mm0=(R0 R2 R4 R6)=RE, mm2=(G0 G2 G4 G6)=GE, mm4=(B0 B2 B4 B6)=BE
260 ; mm1=(R1 R3 R5 R7)=RO, mm3=(G1 G3 G5 G7)=GO, mm5=(B1 B3 B5 B7)=BO
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]261
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]262 ; (Original)
263 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
264 ;
265 ; (This implementation)
266 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]267
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]268 movq mm6,mm1
269 punpcklwd mm1,mm3
270 punpckhwd mm6,mm3
271 pmaddwd mm1,[GOTOFF(eax,PW_F0299_F0337)] ; mm1=ROL*FIX(0.299)+GOL*FIX(0.337)
272 pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=ROH*FIX(0.299)+GOH*FIX(0.337)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]273
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]274 movq mm7, mm6 ; mm7=ROH*FIX(0.299)+GOH*FIX(0.337)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]275
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]276 movq mm6,mm0
277 punpcklwd mm0,mm2
278 punpckhwd mm6,mm2
279 pmaddwd mm0,[GOTOFF(eax,PW_F0299_F0337)] ; mm0=REL*FIX(0.299)+GEL*FIX(0.337)
280 pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=REH*FIX(0.299)+GEH*FIX(0.337)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]281
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]282 movq MMWORD [wk(0)], mm0 ; wk(0)=REL*FIX(0.299)+GEL*FIX(0.337)
283 movq MMWORD [wk(1)], mm6 ; wk(1)=REH*FIX(0.299)+GEH*FIX(0.337)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]284
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]285 movq mm0, mm5 ; mm0=BO
286 movq mm6, mm4 ; mm6=BE
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]287
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]288 movq mm4,mm0
289 punpcklwd mm0,mm3
290 punpckhwd mm4,mm3
291 pmaddwd mm0,[GOTOFF(eax,PW_F0114_F0250)] ; mm0=BOL*FIX(0.114)+GOL*FIX(0.250)
292 pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BOH*FIX(0.114)+GOH*FIX(0.250)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]293
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]294 movq mm3,[GOTOFF(eax,PD_ONEHALF)] ; mm3=[PD_ONEHALF]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]295
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]296 paddd mm0, mm1
297 paddd mm4, mm7
298 paddd mm0,mm3
299 paddd mm4,mm3
300 psrld mm0,SCALEBITS ; mm0=YOL
301 psrld mm4,SCALEBITS ; mm4=YOH
302 packssdw mm0,mm4 ; mm0=YO
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]303
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]304 movq mm4,mm6
305 punpcklwd mm6,mm2
306 punpckhwd mm4,mm2
307 pmaddwd mm6,[GOTOFF(eax,PW_F0114_F0250)] ; mm6=BEL*FIX(0.114)+GEL*FIX(0.250)
308 pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BEH*FIX(0.114)+GEH*FIX(0.250)
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]309
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]310 movq mm2,[GOTOFF(eax,PD_ONEHALF)] ; mm2=[PD_ONEHALF]
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]311
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]312 paddd mm6, MMWORD [wk(0)]
313 paddd mm4, MMWORD [wk(1)]
314 paddd mm6,mm2
315 paddd mm4,mm2
316 psrld mm6,SCALEBITS ; mm6=YEL
317 psrld mm4,SCALEBITS ; mm4=YEH
318 packssdw mm6,mm4 ; mm6=YE
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]319
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]320 psllw mm0,BYTE_BIT
321 por mm6,mm0 ; mm6=Y
322 movq MMWORD [edi], mm6 ; Save Y
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]323
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]324 sub ecx, byte SIZEOF_MMWORD
325 add esi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; inptr
326 add edi, byte SIZEOF_MMWORD ; outptr0
327 cmp ecx, byte SIZEOF_MMWORD
328 jae near .columnloop
329 test ecx,ecx
330 jnz near .column_ld1
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]331
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]332 pop ecx ; col
333 pop esi
334 pop edi
335 poppic eax
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]336
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]337 add esi, byte SIZEOF_JSAMPROW ; input_buf
338 add edi, byte SIZEOF_JSAMPROW
339 dec eax ; num_rows
340 jg near .rowloop
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]341
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]342 emms ; empty MMX state
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]343
344.return:
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]345 pop edi
346 pop esi
347; pop edx ; need not be preserved
348; pop ecx ; need not be preserved
349 pop ebx
350 mov esp,ebp ; esp <- aligned ebp
351 pop esp ; esp <- original ebp
352 pop ebp
353 ret
DRCc8666332011-02-18 11:23:45 +0000[diff] [blame]354
355; For some reason, the OS X linker does not honor the request to align the
356; segment unless we do this.
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]357 align 16