1 ; 2 ; jidctint.asm - accurate integer IDCT (64-bit SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman (a] 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 slow-but-accurate integer implementation of the 19 ; inverse DCT (Discrete Cosine Transform). The following code is based 20 ; directly on the IJG's original jidctint.c; see the jidctint.c for 21 ; more details. 22 ; 23 ; [TAB8] 24 25 %include "jsimdext.inc" 26 %include "jdct.inc" 27 28 ; -------------------------------------------------------------------------- 29 30 %define CONST_BITS 13 31 %define PASS1_BITS 2 32 33 %define DESCALE_P1 (CONST_BITS-PASS1_BITS) 34 %define DESCALE_P2 (CONST_BITS+PASS1_BITS+3) 35 36 %if CONST_BITS == 13 37 F_0_298 equ 2446 ; FIX(0.298631336) 38 F_0_390 equ 3196 ; FIX(0.390180644) 39 F_0_541 equ 4433 ; FIX(0.541196100) 40 F_0_765 equ 6270 ; FIX(0.765366865) 41 F_0_899 equ 7373 ; FIX(0.899976223) 42 F_1_175 equ 9633 ; FIX(1.175875602) 43 F_1_501 equ 12299 ; FIX(1.501321110) 44 F_1_847 equ 15137 ; FIX(1.847759065) 45 F_1_961 equ 16069 ; FIX(1.961570560) 46 F_2_053 equ 16819 ; FIX(2.053119869) 47 F_2_562 equ 20995 ; FIX(2.562915447) 48 F_3_072 equ 25172 ; FIX(3.072711026) 49 %else 50 ; NASM cannot do compile-time arithmetic on floating-point constants. 51 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) 52 F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336) 53 F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644) 54 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100) 55 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) 56 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) 57 F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602) 58 F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110) 59 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) 60 F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560) 61 F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869) 62 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) 63 F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026) 64 %endif 65 66 ; -------------------------------------------------------------------------- 67 SECTION SEG_CONST 68 69 alignz 16 70 global EXTN(jconst_idct_islow_sse2) 71 72 EXTN(jconst_idct_islow_sse2): 73 74 PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541 75 PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847) 76 PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175 77 PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390) 78 PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899 79 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899) 80 PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562 81 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562) 82 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1) 83 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1) 84 PB_CENTERJSAMP times 16 db CENTERJSAMPLE 85 86 alignz 16 87 88 ; -------------------------------------------------------------------------- 89 SECTION SEG_TEXT 90 BITS 64 91 ; 92 ; Perform dequantization and inverse DCT on one block of coefficients. 93 ; 94 ; GLOBAL(void) 95 ; jsimd_idct_islow_sse2 (void * dct_table, JCOEFPTR coef_block, 96 ; JSAMPARRAY output_buf, JDIMENSION output_col) 97 ; 98 99 ; r10 = jpeg_component_info * compptr 100 ; r11 = JCOEFPTR coef_block 101 ; r12 = JSAMPARRAY output_buf 102 ; r13 = JDIMENSION output_col 103 104 %define original_rbp rbp+0 105 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 106 %define WK_NUM 12 107 108 align 16 109 global EXTN(jsimd_idct_islow_sse2) 110 111 EXTN(jsimd_idct_islow_sse2): 112 push rbp 113 mov rax,rsp ; rax = original rbp 114 sub rsp, byte 4 115 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 116 mov [rsp],rax 117 mov rbp,rsp ; rbp = aligned rbp 118 lea rsp, [wk(0)] 119 collect_args 120 121 ; ---- Pass 1: process columns from input. 122 123 mov rdx, r10 ; quantptr 124 mov rsi, r11 ; inptr 125 126 %ifndef NO_ZERO_COLUMN_TEST_ISLOW_SSE2 127 mov eax, DWORD [DWBLOCK(1,0,rsi,SIZEOF_JCOEF)] 128 or eax, DWORD [DWBLOCK(2,0,rsi,SIZEOF_JCOEF)] 129 jnz near .columnDCT 130 131 movdqa xmm0, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)] 132 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)] 133 por xmm0, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)] 134 por xmm1, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_JCOEF)] 135 por xmm0, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)] 136 por xmm1, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)] 137 por xmm0, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)] 138 por xmm1,xmm0 139 packsswb xmm1,xmm1 140 packsswb xmm1,xmm1 141 movd eax,xmm1 142 test rax,rax 143 jnz short .columnDCT 144 145 ; -- AC terms all zero 146 147 movdqa xmm5, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)] 148 pmullw xmm5, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 149 150 psllw xmm5,PASS1_BITS 151 152 movdqa xmm4,xmm5 ; xmm5=in0=(00 01 02 03 04 05 06 07) 153 punpcklwd xmm5,xmm5 ; xmm5=(00 00 01 01 02 02 03 03) 154 punpckhwd xmm4,xmm4 ; xmm4=(04 04 05 05 06 06 07 07) 155 156 pshufd xmm7,xmm5,0x00 ; xmm7=col0=(00 00 00 00 00 00 00 00) 157 pshufd xmm6,xmm5,0x55 ; xmm6=col1=(01 01 01 01 01 01 01 01) 158 pshufd xmm1,xmm5,0xAA ; xmm1=col2=(02 02 02 02 02 02 02 02) 159 pshufd xmm5,xmm5,0xFF ; xmm5=col3=(03 03 03 03 03 03 03 03) 160 pshufd xmm0,xmm4,0x00 ; xmm0=col4=(04 04 04 04 04 04 04 04) 161 pshufd xmm3,xmm4,0x55 ; xmm3=col5=(05 05 05 05 05 05 05 05) 162 pshufd xmm2,xmm4,0xAA ; xmm2=col6=(06 06 06 06 06 06 06 06) 163 pshufd xmm4,xmm4,0xFF ; xmm4=col7=(07 07 07 07 07 07 07 07) 164 165 movdqa XMMWORD [wk(8)], xmm6 ; wk(8)=col1 166 movdqa XMMWORD [wk(9)], xmm5 ; wk(9)=col3 167 movdqa XMMWORD [wk(10)], xmm3 ; wk(10)=col5 168 movdqa XMMWORD [wk(11)], xmm4 ; wk(11)=col7 169 jmp near .column_end 170 %endif 171 .columnDCT: 172 173 ; -- Even part 174 175 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)] 176 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)] 177 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 178 pmullw xmm1, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 179 movdqa xmm2, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_JCOEF)] 180 movdqa xmm3, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)] 181 pmullw xmm2, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 182 pmullw xmm3, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 183 184 ; (Original) 185 ; z1 = (z2 + z3) * 0.541196100; 186 ; tmp2 = z1 + z3 * -1.847759065; 187 ; tmp3 = z1 + z2 * 0.765366865; 188 ; 189 ; (This implementation) 190 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); 191 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; 192 193 movdqa xmm4,xmm1 ; xmm1=in2=z2 194 movdqa xmm5,xmm1 195 punpcklwd xmm4,xmm3 ; xmm3=in6=z3 196 punpckhwd xmm5,xmm3 197 movdqa xmm1,xmm4 198 movdqa xmm3,xmm5 199 pmaddwd xmm4,[rel PW_F130_F054] ; xmm4=tmp3L 200 pmaddwd xmm5,[rel PW_F130_F054] ; xmm5=tmp3H 201 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=tmp2L 202 pmaddwd xmm3,[rel PW_F054_MF130] ; xmm3=tmp2H 203 204 movdqa xmm6,xmm0 205 paddw xmm0,xmm2 ; xmm0=in0+in4 206 psubw xmm6,xmm2 ; xmm6=in0-in4 207 208 pxor xmm7,xmm7 209 pxor xmm2,xmm2 210 punpcklwd xmm7,xmm0 ; xmm7=tmp0L 211 punpckhwd xmm2,xmm0 ; xmm2=tmp0H 212 psrad xmm7,(16-CONST_BITS) ; psrad xmm7,16 & pslld xmm7,CONST_BITS 213 psrad xmm2,(16-CONST_BITS) ; psrad xmm2,16 & pslld xmm2,CONST_BITS 214 215 movdqa xmm0,xmm7 216 paddd xmm7,xmm4 ; xmm7=tmp10L 217 psubd xmm0,xmm4 ; xmm0=tmp13L 218 movdqa xmm4,xmm2 219 paddd xmm2,xmm5 ; xmm2=tmp10H 220 psubd xmm4,xmm5 ; xmm4=tmp13H 221 222 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=tmp10L 223 movdqa XMMWORD [wk(1)], xmm2 ; wk(1)=tmp10H 224 movdqa XMMWORD [wk(2)], xmm0 ; wk(2)=tmp13L 225 movdqa XMMWORD [wk(3)], xmm4 ; wk(3)=tmp13H 226 227 pxor xmm5,xmm5 228 pxor xmm7,xmm7 229 punpcklwd xmm5,xmm6 ; xmm5=tmp1L 230 punpckhwd xmm7,xmm6 ; xmm7=tmp1H 231 psrad xmm5,(16-CONST_BITS) ; psrad xmm5,16 & pslld xmm5,CONST_BITS 232 psrad xmm7,(16-CONST_BITS) ; psrad xmm7,16 & pslld xmm7,CONST_BITS 233 234 movdqa xmm2,xmm5 235 paddd xmm5,xmm1 ; xmm5=tmp11L 236 psubd xmm2,xmm1 ; xmm2=tmp12L 237 movdqa xmm0,xmm7 238 paddd xmm7,xmm3 ; xmm7=tmp11H 239 psubd xmm0,xmm3 ; xmm0=tmp12H 240 241 movdqa XMMWORD [wk(4)], xmm5 ; wk(4)=tmp11L 242 movdqa XMMWORD [wk(5)], xmm7 ; wk(5)=tmp11H 243 movdqa XMMWORD [wk(6)], xmm2 ; wk(6)=tmp12L 244 movdqa XMMWORD [wk(7)], xmm0 ; wk(7)=tmp12H 245 246 ; -- Odd part 247 248 movdqa xmm4, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)] 249 movdqa xmm6, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)] 250 pmullw xmm4, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 251 pmullw xmm6, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 252 movdqa xmm1, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)] 253 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)] 254 pmullw xmm1, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 255 pmullw xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 256 257 movdqa xmm5,xmm6 258 movdqa xmm7,xmm4 259 paddw xmm5,xmm3 ; xmm5=z3 260 paddw xmm7,xmm1 ; xmm7=z4 261 262 ; (Original) 263 ; z5 = (z3 + z4) * 1.175875602; 264 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 265 ; z3 += z5; z4 += z5; 266 ; 267 ; (This implementation) 268 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 269 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 270 271 movdqa xmm2,xmm5 272 movdqa xmm0,xmm5 273 punpcklwd xmm2,xmm7 274 punpckhwd xmm0,xmm7 275 movdqa xmm5,xmm2 276 movdqa xmm7,xmm0 277 pmaddwd xmm2,[rel PW_MF078_F117] ; xmm2=z3L 278 pmaddwd xmm0,[rel PW_MF078_F117] ; xmm0=z3H 279 pmaddwd xmm5,[rel PW_F117_F078] ; xmm5=z4L 280 pmaddwd xmm7,[rel PW_F117_F078] ; xmm7=z4H 281 282 movdqa XMMWORD [wk(10)], xmm2 ; wk(10)=z3L 283 movdqa XMMWORD [wk(11)], xmm0 ; wk(11)=z3H 284 285 ; (Original) 286 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; 287 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; 288 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; 289 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 290 ; tmp0 += z1 + z3; tmp1 += z2 + z4; 291 ; tmp2 += z2 + z3; tmp3 += z1 + z4; 292 ; 293 ; (This implementation) 294 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; 295 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; 296 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); 297 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); 298 ; tmp0 += z3; tmp1 += z4; 299 ; tmp2 += z3; tmp3 += z4; 300 301 movdqa xmm2,xmm3 302 movdqa xmm0,xmm3 303 punpcklwd xmm2,xmm4 304 punpckhwd xmm0,xmm4 305 movdqa xmm3,xmm2 306 movdqa xmm4,xmm0 307 pmaddwd xmm2,[rel PW_MF060_MF089] ; xmm2=tmp0L 308 pmaddwd xmm0,[rel PW_MF060_MF089] ; xmm0=tmp0H 309 pmaddwd xmm3,[rel PW_MF089_F060] ; xmm3=tmp3L 310 pmaddwd xmm4,[rel PW_MF089_F060] ; xmm4=tmp3H 311 312 paddd xmm2, XMMWORD [wk(10)] ; xmm2=tmp0L 313 paddd xmm0, XMMWORD [wk(11)] ; xmm0=tmp0H 314 paddd xmm3,xmm5 ; xmm3=tmp3L 315 paddd xmm4,xmm7 ; xmm4=tmp3H 316 317 movdqa XMMWORD [wk(8)], xmm2 ; wk(8)=tmp0L 318 movdqa XMMWORD [wk(9)], xmm0 ; wk(9)=tmp0H 319 320 movdqa xmm2,xmm1 321 movdqa xmm0,xmm1 322 punpcklwd xmm2,xmm6 323 punpckhwd xmm0,xmm6 324 movdqa xmm1,xmm2 325 movdqa xmm6,xmm0 326 pmaddwd xmm2,[rel PW_MF050_MF256] ; xmm2=tmp1L 327 pmaddwd xmm0,[rel PW_MF050_MF256] ; xmm0=tmp1H 328 pmaddwd xmm1,[rel PW_MF256_F050] ; xmm1=tmp2L 329 pmaddwd xmm6,[rel PW_MF256_F050] ; xmm6=tmp2H 330 331 paddd xmm2,xmm5 ; xmm2=tmp1L 332 paddd xmm0,xmm7 ; xmm0=tmp1H 333 paddd xmm1, XMMWORD [wk(10)] ; xmm1=tmp2L 334 paddd xmm6, XMMWORD [wk(11)] ; xmm6=tmp2H 335 336 movdqa XMMWORD [wk(10)], xmm2 ; wk(10)=tmp1L 337 movdqa XMMWORD [wk(11)], xmm0 ; wk(11)=tmp1H 338 339 ; -- Final output stage 340 341 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=tmp10L 342 movdqa xmm7, XMMWORD [wk(1)] ; xmm7=tmp10H 343 344 movdqa xmm2,xmm5 345 movdqa xmm0,xmm7 346 paddd xmm5,xmm3 ; xmm5=data0L 347 paddd xmm7,xmm4 ; xmm7=data0H 348 psubd xmm2,xmm3 ; xmm2=data7L 349 psubd xmm0,xmm4 ; xmm0=data7H 350 351 movdqa xmm3,[rel PD_DESCALE_P1] ; xmm3=[rel PD_DESCALE_P1] 352 353 paddd xmm5,xmm3 354 paddd xmm7,xmm3 355 psrad xmm5,DESCALE_P1 356 psrad xmm7,DESCALE_P1 357 paddd xmm2,xmm3 358 paddd xmm0,xmm3 359 psrad xmm2,DESCALE_P1 360 psrad xmm0,DESCALE_P1 361 362 packssdw xmm5,xmm7 ; xmm5=data0=(00 01 02 03 04 05 06 07) 363 packssdw xmm2,xmm0 ; xmm2=data7=(70 71 72 73 74 75 76 77) 364 365 movdqa xmm4, XMMWORD [wk(4)] ; xmm4=tmp11L 366 movdqa xmm3, XMMWORD [wk(5)] ; xmm3=tmp11H 367 368 movdqa xmm7,xmm4 369 movdqa xmm0,xmm3 370 paddd xmm4,xmm1 ; xmm4=data1L 371 paddd xmm3,xmm6 ; xmm3=data1H 372 psubd xmm7,xmm1 ; xmm7=data6L 373 psubd xmm0,xmm6 ; xmm0=data6H 374 375 movdqa xmm1,[rel PD_DESCALE_P1] ; xmm1=[rel PD_DESCALE_P1] 376 377 paddd xmm4,xmm1 378 paddd xmm3,xmm1 379 psrad xmm4,DESCALE_P1 380 psrad xmm3,DESCALE_P1 381 paddd xmm7,xmm1 382 paddd xmm0,xmm1 383 psrad xmm7,DESCALE_P1 384 psrad xmm0,DESCALE_P1 385 386 packssdw xmm4,xmm3 ; xmm4=data1=(10 11 12 13 14 15 16 17) 387 packssdw xmm7,xmm0 ; xmm7=data6=(60 61 62 63 64 65 66 67) 388 389 movdqa xmm6,xmm5 ; transpose coefficients(phase 1) 390 punpcklwd xmm5,xmm4 ; xmm5=(00 10 01 11 02 12 03 13) 391 punpckhwd xmm6,xmm4 ; xmm6=(04 14 05 15 06 16 07 17) 392 movdqa xmm1,xmm7 ; transpose coefficients(phase 1) 393 punpcklwd xmm7,xmm2 ; xmm7=(60 70 61 71 62 72 63 73) 394 punpckhwd xmm1,xmm2 ; xmm1=(64 74 65 75 66 76 67 77) 395 396 movdqa xmm3, XMMWORD [wk(6)] ; xmm3=tmp12L 397 movdqa xmm0, XMMWORD [wk(7)] ; xmm0=tmp12H 398 movdqa xmm4, XMMWORD [wk(10)] ; xmm4=tmp1L 399 movdqa xmm2, XMMWORD [wk(11)] ; xmm2=tmp1H 400 401 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(00 10 01 11 02 12 03 13) 402 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=(04 14 05 15 06 16 07 17) 403 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=(60 70 61 71 62 72 63 73) 404 movdqa XMMWORD [wk(5)], xmm1 ; wk(5)=(64 74 65 75 66 76 67 77) 405 406 movdqa xmm5,xmm3 407 movdqa xmm6,xmm0 408 paddd xmm3,xmm4 ; xmm3=data2L 409 paddd xmm0,xmm2 ; xmm0=data2H 410 psubd xmm5,xmm4 ; xmm5=data5L 411 psubd xmm6,xmm2 ; xmm6=data5H 412 413 movdqa xmm7,[rel PD_DESCALE_P1] ; xmm7=[rel PD_DESCALE_P1] 414 415 paddd xmm3,xmm7 416 paddd xmm0,xmm7 417 psrad xmm3,DESCALE_P1 418 psrad xmm0,DESCALE_P1 419 paddd xmm5,xmm7 420 paddd xmm6,xmm7 421 psrad xmm5,DESCALE_P1 422 psrad xmm6,DESCALE_P1 423 424 packssdw xmm3,xmm0 ; xmm3=data2=(20 21 22 23 24 25 26 27) 425 packssdw xmm5,xmm6 ; xmm5=data5=(50 51 52 53 54 55 56 57) 426 427 movdqa xmm1, XMMWORD [wk(2)] ; xmm1=tmp13L 428 movdqa xmm4, XMMWORD [wk(3)] ; xmm4=tmp13H 429 movdqa xmm2, XMMWORD [wk(8)] ; xmm2=tmp0L 430 movdqa xmm7, XMMWORD [wk(9)] ; xmm7=tmp0H 431 432 movdqa xmm0,xmm1 433 movdqa xmm6,xmm4 434 paddd xmm1,xmm2 ; xmm1=data3L 435 paddd xmm4,xmm7 ; xmm4=data3H 436 psubd xmm0,xmm2 ; xmm0=data4L 437 psubd xmm6,xmm7 ; xmm6=data4H 438 439 movdqa xmm2,[rel PD_DESCALE_P1] ; xmm2=[rel PD_DESCALE_P1] 440 441 paddd xmm1,xmm2 442 paddd xmm4,xmm2 443 psrad xmm1,DESCALE_P1 444 psrad xmm4,DESCALE_P1 445 paddd xmm0,xmm2 446 paddd xmm6,xmm2 447 psrad xmm0,DESCALE_P1 448 psrad xmm6,DESCALE_P1 449 450 packssdw xmm1,xmm4 ; xmm1=data3=(30 31 32 33 34 35 36 37) 451 packssdw xmm0,xmm6 ; xmm0=data4=(40 41 42 43 44 45 46 47) 452 453 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(00 10 01 11 02 12 03 13) 454 movdqa xmm2, XMMWORD [wk(1)] ; xmm2=(04 14 05 15 06 16 07 17) 455 456 movdqa xmm4,xmm3 ; transpose coefficients(phase 1) 457 punpcklwd xmm3,xmm1 ; xmm3=(20 30 21 31 22 32 23 33) 458 punpckhwd xmm4,xmm1 ; xmm4=(24 34 25 35 26 36 27 37) 459 movdqa xmm6,xmm0 ; transpose coefficients(phase 1) 460 punpcklwd xmm0,xmm5 ; xmm0=(40 50 41 51 42 52 43 53) 461 punpckhwd xmm6,xmm5 ; xmm6=(44 54 45 55 46 56 47 57) 462 463 movdqa xmm1,xmm7 ; transpose coefficients(phase 2) 464 punpckldq xmm7,xmm3 ; xmm7=(00 10 20 30 01 11 21 31) 465 punpckhdq xmm1,xmm3 ; xmm1=(02 12 22 32 03 13 23 33) 466 movdqa xmm5,xmm2 ; transpose coefficients(phase 2) 467 punpckldq xmm2,xmm4 ; xmm2=(04 14 24 34 05 15 25 35) 468 punpckhdq xmm5,xmm4 ; xmm5=(06 16 26 36 07 17 27 37) 469 470 movdqa xmm3, XMMWORD [wk(4)] ; xmm3=(60 70 61 71 62 72 63 73) 471 movdqa xmm4, XMMWORD [wk(5)] ; xmm4=(64 74 65 75 66 76 67 77) 472 473 movdqa XMMWORD [wk(6)], xmm2 ; wk(6)=(04 14 24 34 05 15 25 35) 474 movdqa XMMWORD [wk(7)], xmm5 ; wk(7)=(06 16 26 36 07 17 27 37) 475 476 movdqa xmm2,xmm0 ; transpose coefficients(phase 2) 477 punpckldq xmm0,xmm3 ; xmm0=(40 50 60 70 41 51 61 71) 478 punpckhdq xmm2,xmm3 ; xmm2=(42 52 62 72 43 53 63 73) 479 movdqa xmm5,xmm6 ; transpose coefficients(phase 2) 480 punpckldq xmm6,xmm4 ; xmm6=(44 54 64 74 45 55 65 75) 481 punpckhdq xmm5,xmm4 ; xmm5=(46 56 66 76 47 57 67 77) 482 483 movdqa xmm3,xmm7 ; transpose coefficients(phase 3) 484 punpcklqdq xmm7,xmm0 ; xmm7=col0=(00 10 20 30 40 50 60 70) 485 punpckhqdq xmm3,xmm0 ; xmm3=col1=(01 11 21 31 41 51 61 71) 486 movdqa xmm4,xmm1 ; transpose coefficients(phase 3) 487 punpcklqdq xmm1,xmm2 ; xmm1=col2=(02 12 22 32 42 52 62 72) 488 punpckhqdq xmm4,xmm2 ; xmm4=col3=(03 13 23 33 43 53 63 73) 489 490 movdqa xmm0, XMMWORD [wk(6)] ; xmm0=(04 14 24 34 05 15 25 35) 491 movdqa xmm2, XMMWORD [wk(7)] ; xmm2=(06 16 26 36 07 17 27 37) 492 493 movdqa XMMWORD [wk(8)], xmm3 ; wk(8)=col1 494 movdqa XMMWORD [wk(9)], xmm4 ; wk(9)=col3 495 496 movdqa xmm3,xmm0 ; transpose coefficients(phase 3) 497 punpcklqdq xmm0,xmm6 ; xmm0=col4=(04 14 24 34 44 54 64 74) 498 punpckhqdq xmm3,xmm6 ; xmm3=col5=(05 15 25 35 45 55 65 75) 499 movdqa xmm4,xmm2 ; transpose coefficients(phase 3) 500 punpcklqdq xmm2,xmm5 ; xmm2=col6=(06 16 26 36 46 56 66 76) 501 punpckhqdq xmm4,xmm5 ; xmm4=col7=(07 17 27 37 47 57 67 77) 502 503 movdqa XMMWORD [wk(10)], xmm3 ; wk(10)=col5 504 movdqa XMMWORD [wk(11)], xmm4 ; wk(11)=col7 505 .column_end: 506 507 ; -- Prefetch the next coefficient block 508 509 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 0*32] 510 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 1*32] 511 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 2*32] 512 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 3*32] 513 514 ; ---- Pass 2: process rows from work array, store into output array. 515 516 mov rax, [original_rbp] 517 mov rdi, r12 ; (JSAMPROW *) 518 mov eax, r13d 519 520 ; -- Even part 521 522 ; xmm7=col0, xmm1=col2, xmm0=col4, xmm2=col6 523 524 ; (Original) 525 ; z1 = (z2 + z3) * 0.541196100; 526 ; tmp2 = z1 + z3 * -1.847759065; 527 ; tmp3 = z1 + z2 * 0.765366865; 528 ; 529 ; (This implementation) 530 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); 531 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; 532 533 movdqa xmm6,xmm1 ; xmm1=in2=z2 534 movdqa xmm5,xmm1 535 punpcklwd xmm6,xmm2 ; xmm2=in6=z3 536 punpckhwd xmm5,xmm2 537 movdqa xmm1,xmm6 538 movdqa xmm2,xmm5 539 pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=tmp3L 540 pmaddwd xmm5,[rel PW_F130_F054] ; xmm5=tmp3H 541 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=tmp2L 542 pmaddwd xmm2,[rel PW_F054_MF130] ; xmm2=tmp2H 543 544 movdqa xmm3,xmm7 545 paddw xmm7,xmm0 ; xmm7=in0+in4 546 psubw xmm3,xmm0 ; xmm3=in0-in4 547 548 pxor xmm4,xmm4 549 pxor xmm0,xmm0 550 punpcklwd xmm4,xmm7 ; xmm4=tmp0L 551 punpckhwd xmm0,xmm7 ; xmm0=tmp0H 552 psrad xmm4,(16-CONST_BITS) ; psrad xmm4,16 & pslld xmm4,CONST_BITS 553 psrad xmm0,(16-CONST_BITS) ; psrad xmm0,16 & pslld xmm0,CONST_BITS 554 555 movdqa xmm7,xmm4 556 paddd xmm4,xmm6 ; xmm4=tmp10L 557 psubd xmm7,xmm6 ; xmm7=tmp13L 558 movdqa xmm6,xmm0 559 paddd xmm0,xmm5 ; xmm0=tmp10H 560 psubd xmm6,xmm5 ; xmm6=tmp13H 561 562 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=tmp10L 563 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp10H 564 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=tmp13L 565 movdqa XMMWORD [wk(3)], xmm6 ; wk(3)=tmp13H 566 567 pxor xmm5,xmm5 568 pxor xmm4,xmm4 569 punpcklwd xmm5,xmm3 ; xmm5=tmp1L 570 punpckhwd xmm4,xmm3 ; xmm4=tmp1H 571 psrad xmm5,(16-CONST_BITS) ; psrad xmm5,16 & pslld xmm5,CONST_BITS 572 psrad xmm4,(16-CONST_BITS) ; psrad xmm4,16 & pslld xmm4,CONST_BITS 573 574 movdqa xmm0,xmm5 575 paddd xmm5,xmm1 ; xmm5=tmp11L 576 psubd xmm0,xmm1 ; xmm0=tmp12L 577 movdqa xmm7,xmm4 578 paddd xmm4,xmm2 ; xmm4=tmp11H 579 psubd xmm7,xmm2 ; xmm7=tmp12H 580 581 movdqa XMMWORD [wk(4)], xmm5 ; wk(4)=tmp11L 582 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=tmp11H 583 movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=tmp12L 584 movdqa XMMWORD [wk(7)], xmm7 ; wk(7)=tmp12H 585 586 ; -- Odd part 587 588 movdqa xmm6, XMMWORD [wk(9)] ; xmm6=col3 589 movdqa xmm3, XMMWORD [wk(8)] ; xmm3=col1 590 movdqa xmm1, XMMWORD [wk(11)] ; xmm1=col7 591 movdqa xmm2, XMMWORD [wk(10)] ; xmm2=col5 592 593 movdqa xmm5,xmm6 594 movdqa xmm4,xmm3 595 paddw xmm5,xmm1 ; xmm5=z3 596 paddw xmm4,xmm2 ; xmm4=z4 597 598 ; (Original) 599 ; z5 = (z3 + z4) * 1.175875602; 600 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 601 ; z3 += z5; z4 += z5; 602 ; 603 ; (This implementation) 604 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 605 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 606 607 movdqa xmm0,xmm5 608 movdqa xmm7,xmm5 609 punpcklwd xmm0,xmm4 610 punpckhwd xmm7,xmm4 611 movdqa xmm5,xmm0 612 movdqa xmm4,xmm7 613 pmaddwd xmm0,[rel PW_MF078_F117] ; xmm0=z3L 614 pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3H 615 pmaddwd xmm5,[rel PW_F117_F078] ; xmm5=z4L 616 pmaddwd xmm4,[rel PW_F117_F078] ; xmm4=z4H 617 618 movdqa XMMWORD [wk(10)], xmm0 ; wk(10)=z3L 619 movdqa XMMWORD [wk(11)], xmm7 ; wk(11)=z3H 620 621 ; (Original) 622 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; 623 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; 624 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; 625 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 626 ; tmp0 += z1 + z3; tmp1 += z2 + z4; 627 ; tmp2 += z2 + z3; tmp3 += z1 + z4; 628 ; 629 ; (This implementation) 630 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; 631 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; 632 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); 633 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); 634 ; tmp0 += z3; tmp1 += z4; 635 ; tmp2 += z3; tmp3 += z4; 636 637 movdqa xmm0,xmm1 638 movdqa xmm7,xmm1 639 punpcklwd xmm0,xmm3 640 punpckhwd xmm7,xmm3 641 movdqa xmm1,xmm0 642 movdqa xmm3,xmm7 643 pmaddwd xmm0,[rel PW_MF060_MF089] ; xmm0=tmp0L 644 pmaddwd xmm7,[rel PW_MF060_MF089] ; xmm7=tmp0H 645 pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp3L 646 pmaddwd xmm3,[rel PW_MF089_F060] ; xmm3=tmp3H 647 648 paddd xmm0, XMMWORD [wk(10)] ; xmm0=tmp0L 649 paddd xmm7, XMMWORD [wk(11)] ; xmm7=tmp0H 650 paddd xmm1,xmm5 ; xmm1=tmp3L 651 paddd xmm3,xmm4 ; xmm3=tmp3H 652 653 movdqa XMMWORD [wk(8)], xmm0 ; wk(8)=tmp0L 654 movdqa XMMWORD [wk(9)], xmm7 ; wk(9)=tmp0H 655 656 movdqa xmm0,xmm2 657 movdqa xmm7,xmm2 658 punpcklwd xmm0,xmm6 659 punpckhwd xmm7,xmm6 660 movdqa xmm2,xmm0 661 movdqa xmm6,xmm7 662 pmaddwd xmm0,[rel PW_MF050_MF256] ; xmm0=tmp1L 663 pmaddwd xmm7,[rel PW_MF050_MF256] ; xmm7=tmp1H 664 pmaddwd xmm2,[rel PW_MF256_F050] ; xmm2=tmp2L 665 pmaddwd xmm6,[rel PW_MF256_F050] ; xmm6=tmp2H 666 667 paddd xmm0,xmm5 ; xmm0=tmp1L 668 paddd xmm7,xmm4 ; xmm7=tmp1H 669 paddd xmm2, XMMWORD [wk(10)] ; xmm2=tmp2L 670 paddd xmm6, XMMWORD [wk(11)] ; xmm6=tmp2H 671 672 movdqa XMMWORD [wk(10)], xmm0 ; wk(10)=tmp1L 673 movdqa XMMWORD [wk(11)], xmm7 ; wk(11)=tmp1H 674 675 ; -- Final output stage 676 677 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=tmp10L 678 movdqa xmm4, XMMWORD [wk(1)] ; xmm4=tmp10H 679 680 movdqa xmm0,xmm5 681 movdqa xmm7,xmm4 682 paddd xmm5,xmm1 ; xmm5=data0L 683 paddd xmm4,xmm3 ; xmm4=data0H 684 psubd xmm0,xmm1 ; xmm0=data7L 685 psubd xmm7,xmm3 ; xmm7=data7H 686 687 movdqa xmm1,[rel PD_DESCALE_P2] ; xmm1=[rel PD_DESCALE_P2] 688 689 paddd xmm5,xmm1 690 paddd xmm4,xmm1 691 psrad xmm5,DESCALE_P2 692 psrad xmm4,DESCALE_P2 693 paddd xmm0,xmm1 694 paddd xmm7,xmm1 695 psrad xmm0,DESCALE_P2 696 psrad xmm7,DESCALE_P2 697 698 packssdw xmm5,xmm4 ; xmm5=data0=(00 10 20 30 40 50 60 70) 699 packssdw xmm0,xmm7 ; xmm0=data7=(07 17 27 37 47 57 67 77) 700 701 movdqa xmm3, XMMWORD [wk(4)] ; xmm3=tmp11L 702 movdqa xmm1, XMMWORD [wk(5)] ; xmm1=tmp11H 703 704 movdqa xmm4,xmm3 705 movdqa xmm7,xmm1 706 paddd xmm3,xmm2 ; xmm3=data1L 707 paddd xmm1,xmm6 ; xmm1=data1H 708 psubd xmm4,xmm2 ; xmm4=data6L 709 psubd xmm7,xmm6 ; xmm7=data6H 710 711 movdqa xmm2,[rel PD_DESCALE_P2] ; xmm2=[rel PD_DESCALE_P2] 712 713 paddd xmm3,xmm2 714 paddd xmm1,xmm2 715 psrad xmm3,DESCALE_P2 716 psrad xmm1,DESCALE_P2 717 paddd xmm4,xmm2 718 paddd xmm7,xmm2 719 psrad xmm4,DESCALE_P2 720 psrad xmm7,DESCALE_P2 721 722 packssdw xmm3,xmm1 ; xmm3=data1=(01 11 21 31 41 51 61 71) 723 packssdw xmm4,xmm7 ; xmm4=data6=(06 16 26 36 46 56 66 76) 724 725 packsswb xmm5,xmm4 ; xmm5=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) 726 packsswb xmm3,xmm0 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) 727 728 movdqa xmm6, XMMWORD [wk(6)] ; xmm6=tmp12L 729 movdqa xmm2, XMMWORD [wk(7)] ; xmm2=tmp12H 730 movdqa xmm1, XMMWORD [wk(10)] ; xmm1=tmp1L 731 movdqa xmm7, XMMWORD [wk(11)] ; xmm7=tmp1H 732 733 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) 734 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) 735 736 movdqa xmm4,xmm6 737 movdqa xmm0,xmm2 738 paddd xmm6,xmm1 ; xmm6=data2L 739 paddd xmm2,xmm7 ; xmm2=data2H 740 psubd xmm4,xmm1 ; xmm4=data5L 741 psubd xmm0,xmm7 ; xmm0=data5H 742 743 movdqa xmm5,[rel PD_DESCALE_P2] ; xmm5=[rel PD_DESCALE_P2] 744 745 paddd xmm6,xmm5 746 paddd xmm2,xmm5 747 psrad xmm6,DESCALE_P2 748 psrad xmm2,DESCALE_P2 749 paddd xmm4,xmm5 750 paddd xmm0,xmm5 751 psrad xmm4,DESCALE_P2 752 psrad xmm0,DESCALE_P2 753 754 packssdw xmm6,xmm2 ; xmm6=data2=(02 12 22 32 42 52 62 72) 755 packssdw xmm4,xmm0 ; xmm4=data5=(05 15 25 35 45 55 65 75) 756 757 movdqa xmm3, XMMWORD [wk(2)] ; xmm3=tmp13L 758 movdqa xmm1, XMMWORD [wk(3)] ; xmm1=tmp13H 759 movdqa xmm7, XMMWORD [wk(8)] ; xmm7=tmp0L 760 movdqa xmm5, XMMWORD [wk(9)] ; xmm5=tmp0H 761 762 movdqa xmm2,xmm3 763 movdqa xmm0,xmm1 764 paddd xmm3,xmm7 ; xmm3=data3L 765 paddd xmm1,xmm5 ; xmm1=data3H 766 psubd xmm2,xmm7 ; xmm2=data4L 767 psubd xmm0,xmm5 ; xmm0=data4H 768 769 movdqa xmm7,[rel PD_DESCALE_P2] ; xmm7=[rel PD_DESCALE_P2] 770 771 paddd xmm3,xmm7 772 paddd xmm1,xmm7 773 psrad xmm3,DESCALE_P2 774 psrad xmm1,DESCALE_P2 775 paddd xmm2,xmm7 776 paddd xmm0,xmm7 777 psrad xmm2,DESCALE_P2 778 psrad xmm0,DESCALE_P2 779 780 movdqa xmm5,[rel PB_CENTERJSAMP] ; xmm5=[rel PB_CENTERJSAMP] 781 782 packssdw xmm3,xmm1 ; xmm3=data3=(03 13 23 33 43 53 63 73) 783 packssdw xmm2,xmm0 ; xmm2=data4=(04 14 24 34 44 54 64 74) 784 785 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) 786 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) 787 788 packsswb xmm6,xmm2 ; xmm6=(02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74) 789 packsswb xmm3,xmm4 ; xmm3=(03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75) 790 791 paddb xmm7,xmm5 792 paddb xmm1,xmm5 793 paddb xmm6,xmm5 794 paddb xmm3,xmm5 795 796 movdqa xmm0,xmm7 ; transpose coefficients(phase 1) 797 punpcklbw xmm7,xmm1 ; xmm7=(00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71) 798 punpckhbw xmm0,xmm1 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77) 799 movdqa xmm2,xmm6 ; transpose coefficients(phase 1) 800 punpcklbw xmm6,xmm3 ; xmm6=(02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73) 801 punpckhbw xmm2,xmm3 ; xmm2=(04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75) 802 803 movdqa xmm4,xmm7 ; transpose coefficients(phase 2) 804 punpcklwd xmm7,xmm6 ; xmm7=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33) 805 punpckhwd xmm4,xmm6 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73) 806 movdqa xmm5,xmm2 ; transpose coefficients(phase 2) 807 punpcklwd xmm2,xmm0 ; xmm2=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37) 808 punpckhwd xmm5,xmm0 ; xmm5=(44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77) 809 810 movdqa xmm1,xmm7 ; transpose coefficients(phase 3) 811 punpckldq xmm7,xmm2 ; xmm7=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17) 812 punpckhdq xmm1,xmm2 ; xmm1=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37) 813 movdqa xmm3,xmm4 ; transpose coefficients(phase 3) 814 punpckldq xmm4,xmm5 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57) 815 punpckhdq xmm3,xmm5 ; xmm3=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77) 816 817 pshufd xmm6,xmm7,0x4E ; xmm6=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07) 818 pshufd xmm0,xmm1,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27) 819 pshufd xmm2,xmm4,0x4E ; xmm2=(50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47) 820 pshufd xmm5,xmm3,0x4E ; xmm5=(70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67) 821 822 mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] 823 mov rsi, JSAMPROW [rdi+2*SIZEOF_JSAMPROW] 824 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm7 825 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm1 826 mov rdx, JSAMPROW [rdi+4*SIZEOF_JSAMPROW] 827 mov rsi, JSAMPROW [rdi+6*SIZEOF_JSAMPROW] 828 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm4 829 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm3 830 831 mov rdx, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] 832 mov rsi, JSAMPROW [rdi+3*SIZEOF_JSAMPROW] 833 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm6 834 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm0 835 mov rdx, JSAMPROW [rdi+5*SIZEOF_JSAMPROW] 836 mov rsi, JSAMPROW [rdi+7*SIZEOF_JSAMPROW] 837 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm2 838 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm5 839 840 uncollect_args 841 mov rsp,rbp ; rsp <- aligned rbp 842 pop rsp ; rsp <- original rbp 843 pop rbp 844 ret 845 846 ; For some reason, the OS X linker does not honor the request to align the 847 ; segment unless we do this. 848 align 16 849
