Mercurial > sdl-ios-xcode
annotate src/hermes/mmxp2_32.asm @ 2218:6cc82cad8b77
1.3 video API design chat
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 07 Aug 2007 07:08:25 +0000 |
parents | 15b4a74cdac1 |
children |
rev | line source |
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0 | 1 ; |
2 ; pII-optimised MMX format converters for HERMES | |
3 ; Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk) | |
4 ; and (c) 1999 Jonathan Matthew (jmatthew@uq.net.au) | |
5 ; This source code is licensed under the GNU LGPL | |
6 ; | |
7 ; Please refer to the file COPYING.LIB contained in the distribution for | |
8 ; licensing conditions | |
9 ; | |
10 ; COPYRIGHT NOTICE | |
11 ; | |
12 ; This file partly contains code that is (c) Intel Corporation, specifically | |
13 ; the mode detection routine, and the converter to 15 bit (8 pixel | |
14 ; conversion routine from the mmx programming tutorial pages). | |
15 ; | |
16 ; | |
17 ; These routines aren't exactly pII optimised - it's just that as they | |
18 ; are, they're terrible on p5 MMXs, but less so on pIIs. Someone needs to | |
19 ; optimise them for p5 MMXs.. | |
20 | |
21 BITS 32 | |
22 | |
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23 %include "common.inc" |
0 | 24 |
1871 | 25 SDL_FUNC _ConvertMMXpII32_24RGB888 |
26 SDL_FUNC _ConvertMMXpII32_16RGB565 | |
27 SDL_FUNC _ConvertMMXpII32_16BGR565 | |
28 SDL_FUNC _ConvertMMXpII32_16RGB555 | |
29 SDL_FUNC _ConvertMMXpII32_16BGR555 | |
0 | 30 |
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31 ;; Macros for conversion routines |
0 | 32 |
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33 %macro _push_immq_mask 1 |
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34 push dword %1 |
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35 push dword %1 |
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36 %endmacro |
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38 %macro load_immq 2 |
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39 _push_immq_mask %2 |
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40 movq %1, [esp] |
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41 %endmacro |
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43 %macro pand_immq 2 |
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44 _push_immq_mask %2 |
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45 pand %1, [esp] |
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46 %endmacro |
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47 |
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48 %define CLEANUP_IMMQ_LOADS(num) \ |
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49 add esp, byte 8 * num |
0 | 50 |
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51 %define mmx32_rgb888_mask 00ffffffh |
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52 %define mmx32_rgb565_b 000000f8h |
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53 %define mmx32_rgb565_g 0000fc00h |
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54 %define mmx32_rgb565_r 00f80000h |
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56 %define mmx32_rgb555_rb 00f800f8h |
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57 %define mmx32_rgb555_g 0000f800h |
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58 %define mmx32_rgb555_mul 20000008h |
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59 %define mmx32_bgr555_mul 00082000h |
0 | 60 |
61 SECTION .text | |
62 | |
63 _ConvertMMXpII32_24RGB888: | |
64 | |
65 ; set up mm6 as the mask, mm7 as zero | |
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66 load_immq mm6, mmx32_rgb888_mask |
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67 CLEANUP_IMMQ_LOADS(1) |
0 | 68 pxor mm7, mm7 |
69 | |
70 mov edx, ecx ; save ecx | |
71 and ecx, 0fffffffch ; clear lower two bits | |
72 jnz .L1 | |
73 jmp .L2 | |
74 | |
75 .L1: | |
76 | |
77 movq mm0, [esi] ; A R G B a r g b | |
78 pand mm0, mm6 ; 0 R G B 0 r g b | |
79 movq mm1, [esi+8] ; A R G B a r g b | |
80 pand mm1, mm6 ; 0 R G B 0 r g b | |
81 | |
82 movq mm2, mm0 ; 0 R G B 0 r g b | |
83 punpckhdq mm2, mm7 ; 0 0 0 0 0 R G B | |
84 punpckldq mm0, mm7 ; 0 0 0 0 0 r g b | |
85 psllq mm2, 24 ; 0 0 R G B 0 0 0 | |
86 por mm0, mm2 ; 0 0 R G B r g b | |
87 | |
88 movq mm3, mm1 ; 0 R G B 0 r g b | |
89 psllq mm3, 48 ; g b 0 0 0 0 0 0 | |
90 por mm0, mm3 ; g b R G B r g b | |
91 | |
92 movq mm4, mm1 ; 0 R G B 0 r g b | |
93 punpckhdq mm4, mm7 ; 0 0 0 0 0 R G B | |
94 punpckldq mm1, mm7 ; 0 0 0 0 0 r g b | |
95 psrlq mm1, 16 ; 0 0 0 R G B 0 r | |
96 psllq mm4, 8 ; 0 0 0 0 R G B 0 | |
97 por mm1, mm4 ; 0 0 0 0 R G B r | |
98 | |
99 movq [edi], mm0 | |
100 add esi, BYTE 16 | |
101 movd [edi+8], mm1 | |
102 add edi, BYTE 12 | |
103 sub ecx, BYTE 4 | |
104 jnz .L1 | |
105 | |
106 .L2: | |
107 mov ecx, edx | |
108 and ecx, BYTE 3 | |
109 jz .L4 | |
110 .L3: | |
111 mov al, [esi] | |
112 mov bl, [esi+1] | |
113 mov dl, [esi+2] | |
114 mov [edi], al | |
115 mov [edi+1], bl | |
116 mov [edi+2], dl | |
117 add esi, BYTE 4 | |
118 add edi, BYTE 3 | |
119 dec ecx | |
120 jnz .L3 | |
121 .L4: | |
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122 return |
0 | 123 |
124 | |
125 | |
126 _ConvertMMXpII32_16RGB565: | |
127 | |
128 ; set up masks | |
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129 load_immq mm5, mmx32_rgb565_b |
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130 load_immq mm6, mmx32_rgb565_g |
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131 load_immq mm7, mmx32_rgb565_r |
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132 CLEANUP_IMMQ_LOADS(3) |
0 | 133 |
134 mov edx, ecx | |
135 shr ecx, 2 | |
136 jnz .L1 | |
137 jmp .L2 ; not necessary at the moment, but doesn't hurt (much) | |
138 | |
139 .L1: | |
140 movq mm0, [esi] ; argb | |
141 movq mm1, mm0 ; argb | |
142 pand mm0, mm6 ; 00g0 | |
143 movq mm3, mm1 ; argb | |
144 pand mm1, mm5 ; 000b | |
145 pand mm3, mm7 ; 0r00 | |
146 pslld mm1, 2 ; 0 0 000000bb bbb00000 | |
147 por mm0, mm1 ; 0 0 ggggggbb bbb00000 | |
148 psrld mm0, 5 ; 0 0 00000ggg gggbbbbb | |
149 | |
150 movq mm4, [esi+8] ; argb | |
151 movq mm2, mm4 ; argb | |
152 pand mm4, mm6 ; 00g0 | |
153 movq mm1, mm2 ; argb | |
154 pand mm2, mm5 ; 000b | |
155 pand mm1, mm7 ; 0r00 | |
156 pslld mm2, 2 ; 0 0 000000bb bbb00000 | |
157 por mm4, mm2 ; 0 0 ggggggbb bbb00000 | |
158 psrld mm4, 5 ; 0 0 00000ggg gggbbbbb | |
159 | |
160 packuswb mm3, mm1 ; R 0 r 0 | |
161 packssdw mm0, mm4 ; as above.. ish | |
162 por mm0, mm3 ; done. | |
163 movq [edi], mm0 | |
164 | |
165 add esi, 16 | |
166 add edi, 8 | |
167 dec ecx | |
168 jnz .L1 | |
169 | |
170 .L2: | |
171 mov ecx, edx | |
172 and ecx, BYTE 3 | |
173 jz .L4 | |
174 .L3: | |
175 mov al, [esi] | |
176 mov bh, [esi+1] | |
177 mov ah, [esi+2] | |
178 shr al, 3 | |
179 and eax, 0F81Fh ; BYTE? | |
180 shr ebx, 5 | |
181 and ebx, 07E0h ; BYTE? | |
182 add eax, ebx | |
183 mov [edi], al | |
184 mov [edi+1], ah | |
185 add esi, BYTE 4 | |
186 add edi, BYTE 2 | |
187 dec ecx | |
188 jnz .L3 | |
189 | |
190 .L4: | |
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191 retn |
0 | 192 |
193 | |
194 _ConvertMMXpII32_16BGR565: | |
195 | |
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196 load_immq mm5, mmx32_rgb565_r |
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197 load_immq mm6, mmx32_rgb565_g |
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198 load_immq mm7, mmx32_rgb565_b |
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199 CLEANUP_IMMQ_LOADS(3) |
0 | 200 |
201 mov edx, ecx | |
202 shr ecx, 2 | |
203 jnz .L1 | |
204 jmp .L2 | |
205 | |
206 .L1: | |
207 movq mm0, [esi] ; a r g b | |
208 movq mm1, mm0 ; a r g b | |
209 pand mm0, mm6 ; 0 0 g 0 | |
210 movq mm3, mm1 ; a r g b | |
211 pand mm1, mm5 ; 0 r 0 0 | |
212 pand mm3, mm7 ; 0 0 0 b | |
213 | |
214 psllq mm3, 16 ; 0 b 0 0 | |
215 psrld mm1, 14 ; 0 0 000000rr rrr00000 | |
216 por mm0, mm1 ; 0 0 ggggggrr rrr00000 | |
217 psrld mm0, 5 ; 0 0 00000ggg gggrrrrr | |
218 | |
219 movq mm4, [esi+8] ; a r g b | |
220 movq mm2, mm4 ; a r g b | |
221 pand mm4, mm6 ; 0 0 g 0 | |
222 movq mm1, mm2 ; a r g b | |
223 pand mm2, mm5 ; 0 r 0 0 | |
224 pand mm1, mm7 ; 0 0 0 b | |
225 | |
226 psllq mm1, 16 ; 0 b 0 0 | |
227 psrld mm2, 14 ; 0 0 000000rr rrr00000 | |
228 por mm4, mm2 ; 0 0 ggggggrr rrr00000 | |
229 psrld mm4, 5 ; 0 0 00000ggg gggrrrrr | |
230 | |
231 packuswb mm3, mm1 ; BBBBB000 00000000 bbbbb000 00000000 | |
232 packssdw mm0, mm4 ; 00000GGG GGGRRRRR 00000GGG GGGRRRRR | |
233 por mm0, mm3 ; BBBBBGGG GGGRRRRR bbbbbggg gggrrrrr | |
234 movq [edi], mm0 | |
235 | |
236 add esi, BYTE 16 | |
237 add edi, BYTE 8 | |
238 dec ecx | |
239 jnz .L1 | |
240 | |
241 .L2: | |
242 and edx, BYTE 3 | |
243 jz .L4 | |
244 .L3: | |
245 mov al, [esi+2] | |
246 mov bh, [esi+1] | |
247 mov ah, [esi] | |
248 shr al, 3 | |
249 and eax, 0F81Fh ; BYTE ? | |
250 shr ebx, 5 | |
251 and ebx, 07E0h ; BYTE ? | |
252 add eax, ebx | |
253 mov [edi], al | |
254 mov [edi+1], ah | |
255 add esi, BYTE 4 | |
256 add edi, BYTE 2 | |
257 dec edx | |
258 jnz .L3 | |
259 | |
260 .L4: | |
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261 retn |
0 | 262 |
263 _ConvertMMXpII32_16BGR555: | |
264 | |
265 ; the 16BGR555 converter is identical to the RGB555 one, | |
266 ; except it uses a different multiplier for the pmaddwd | |
267 ; instruction. cool huh. | |
268 | |
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269 load_immq mm7, mmx32_bgr555_mul |
0 | 270 jmp _convert_bgr555_cheat |
271 | |
272 ; This is the same as the Intel version.. they obviously went to | |
273 ; much more trouble to expand/coil the loop than I did, so theirs | |
274 ; would almost certainly be faster, even if only a little. | |
275 ; I did rename 'mmx32_rgb555_add' to 'mmx32_rgb555_mul', which is | |
276 ; (I think) a more accurate name.. | |
277 _ConvertMMXpII32_16RGB555: | |
278 | |
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279 load_immq mm7, mmx32_rgb555_mul |
0 | 280 _convert_bgr555_cheat: |
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281 load_immq mm6, mmx32_rgb555_g |
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282 CLEANUP_IMMQ_LOADS(2) |
0 | 283 |
284 mov edx,ecx ; Save ecx | |
285 | |
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286 and ecx,DWORD 0fffffff8h ; clear lower three bits |
0 | 287 jnz .L_OK |
289
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288 jmp near .L2 |
0 | 289 |
290 .L_OK: | |
291 | |
292 movq mm2,[esi+8] | |
293 | |
294 movq mm0,[esi] | |
295 movq mm3,mm2 | |
296 | |
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297 pand_immq mm3, mmx32_rgb555_rb |
0 | 298 movq mm1,mm0 |
299 | |
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300 pand_immq mm1, mmx32_rgb555_rb |
0 | 301 pmaddwd mm3,mm7 |
302 | |
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303 CLEANUP_IMMQ_LOADS(2) |
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304 |
0 | 305 pmaddwd mm1,mm7 |
306 pand mm2,mm6 | |
307 | |
308 .L1: | |
309 movq mm4,[esi+24] | |
310 pand mm0,mm6 | |
311 | |
312 movq mm5,[esi+16] | |
313 por mm3,mm2 | |
314 | |
315 psrld mm3,6 | |
316 por mm1,mm0 | |
317 | |
318 movq mm0,mm4 | |
319 psrld mm1,6 | |
320 | |
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321 pand_immq mm0, mmx32_rgb555_rb |
0 | 322 packssdw mm1,mm3 |
323 | |
324 movq mm3,mm5 | |
325 pmaddwd mm0,mm7 | |
326 | |
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327 pand_immq mm3, mmx32_rgb555_rb |
0 | 328 pand mm4,mm6 |
329 | |
330 movq [edi],mm1 | |
331 pmaddwd mm3,mm7 | |
332 | |
333 add esi,BYTE 32 | |
334 por mm4,mm0 | |
335 | |
336 pand mm5,mm6 | |
337 psrld mm4,6 | |
338 | |
339 movq mm2,[esi+8] | |
340 por mm5,mm3 | |
341 | |
342 movq mm0,[esi] | |
343 psrld mm5,6 | |
344 | |
345 movq mm3,mm2 | |
346 movq mm1,mm0 | |
347 | |
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348 pand_immq mm3, mmx32_rgb555_rb |
0 | 349 packssdw mm5,mm4 |
350 | |
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351 pand_immq mm1, mmx32_rgb555_rb |
0 | 352 pand mm2,mm6 |
353 | |
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354 CLEANUP_IMMQ_LOADS(4) |
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355 |
0 | 356 movq [edi+8],mm5 |
357 pmaddwd mm3,mm7 | |
358 | |
359 pmaddwd mm1,mm7 | |
360 add edi,BYTE 16 | |
361 | |
362 sub ecx,BYTE 8 | |
363 jz .L2 | |
364 jmp .L1 | |
365 | |
366 | |
367 .L2: | |
368 mov ecx,edx | |
369 | |
370 and ecx,BYTE 7 | |
371 jz .L4 | |
372 | |
373 .L3: | |
374 mov ebx,[esi] | |
375 add esi,BYTE 4 | |
376 | |
377 mov eax,ebx | |
378 mov edx,ebx | |
379 | |
380 shr eax,3 | |
381 shr edx,6 | |
382 | |
383 and eax,BYTE 0000000000011111b | |
384 and edx, 0000001111100000b | |
385 | |
386 shr ebx,9 | |
387 | |
388 or eax,edx | |
389 | |
390 and ebx, 0111110000000000b | |
391 | |
392 or eax,ebx | |
393 | |
394 mov [edi],ax | |
395 add edi,BYTE 2 | |
396 | |
397 dec ecx | |
398 jnz .L3 | |
399 | |
400 .L4: | |
2134
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Merged r3106:3107 from branches/SDL-1.2: Hermes PIC fixes.
Ryan C. Gordon <icculus@icculus.org>
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401 retn |
0 | 402 |
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
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403 %ifidn __OUTPUT_FORMAT__,elf |
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
404 section .note.GNU-stack noalloc noexec nowrite progbits |
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
405 %endif |