Index: third_party/libjpeg_turbo/simd/ji3dnflt.asm |
=================================================================== |
--- third_party/libjpeg_turbo/simd/ji3dnflt.asm (revision 0) |
+++ third_party/libjpeg_turbo/simd/ji3dnflt.asm (revision 0) |
@@ -0,0 +1,452 @@ |
+; |
+; ji3dnflt.asm - floating-point IDCT (3DNow! & MMX) |
+; |
+; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
+; |
+; Based on |
+; x86 SIMD extension for IJG JPEG library |
+; Copyright (C) 1999-2006, MIYASAKA Masaru. |
+; For conditions of distribution and use, see copyright notice in jsimdext.inc |
+; |
+; This file should be assembled with NASM (Netwide Assembler), |
+; can *not* be assembled with Microsoft's MASM or any compatible |
+; assembler (including Borland's Turbo Assembler). |
+; NASM is available from http://nasm.sourceforge.net/ or |
+; http://sourceforge.net/project/showfiles.php?group_id=6208 |
+; |
+; This file contains a floating-point implementation of the inverse DCT |
+; (Discrete Cosine Transform). The following code is based directly on |
+; the IJG's original jidctflt.c; see the jidctflt.c for more details. |
+; |
+; [TAB8] |
+ |
+%include "jsimdext.inc" |
+%include "jdct.inc" |
+ |
+; -------------------------------------------------------------------------- |
+ SECTION SEG_CONST |
+ |
+ alignz 16 |
+ global EXTN(jconst_idct_float_3dnow) |
+ |
+EXTN(jconst_idct_float_3dnow): |
+ |
+PD_1_414 times 2 dd 1.414213562373095048801689 |
+PD_1_847 times 2 dd 1.847759065022573512256366 |
+PD_1_082 times 2 dd 1.082392200292393968799446 |
+PD_2_613 times 2 dd 2.613125929752753055713286 |
+PD_RNDINT_MAGIC times 2 dd 100663296.0 ; (float)(0x00C00000 << 3) |
+PB_CENTERJSAMP times 8 db CENTERJSAMPLE |
+ |
+ alignz 16 |
+ |
+; -------------------------------------------------------------------------- |
+ SECTION SEG_TEXT |
+ BITS 32 |
+; |
+; Perform dequantization and inverse DCT on one block of coefficients. |
+; |
+; GLOBAL(void) |
+; jsimd_idct_float_3dnow (void * dct_table, JCOEFPTR coef_block, |
+; JSAMPARRAY output_buf, JDIMENSION output_col) |
+; |
+ |
+%define dct_table(b) (b)+8 ; void * dct_table |
+%define coef_block(b) (b)+12 ; JCOEFPTR coef_block |
+%define output_buf(b) (b)+16 ; JSAMPARRAY output_buf |
+%define output_col(b) (b)+20 ; JDIMENSION output_col |
+ |
+%define original_ebp ebp+0 |
+%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] |
+%define WK_NUM 2 |
+%define workspace wk(0)-DCTSIZE2*SIZEOF_FAST_FLOAT |
+ ; FAST_FLOAT workspace[DCTSIZE2] |
+ |
+ align 16 |
+ global EXTN(jsimd_idct_float_3dnow) |
+ |
+EXTN(jsimd_idct_float_3dnow): |
+ push ebp |
+ mov eax,esp ; eax = original ebp |
+ sub esp, byte 4 |
+ and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits |
+ mov [esp],eax |
+ mov ebp,esp ; ebp = aligned ebp |
+ lea esp, [workspace] |
+ push ebx |
+; push ecx ; need not be preserved |
+; push edx ; need not be preserved |
+ push esi |
+ push edi |
+ |
+ get_GOT ebx ; get GOT address |
+ |
+ ; ---- Pass 1: process columns from input, store into work array. |
+ |
+; mov eax, [original_ebp] |
+ mov edx, POINTER [dct_table(eax)] ; quantptr |
+ mov esi, JCOEFPTR [coef_block(eax)] ; inptr |
+ lea edi, [workspace] ; FAST_FLOAT * wsptr |
+ mov ecx, DCTSIZE/2 ; ctr |
+ alignx 16,7 |
+.columnloop: |
+%ifndef NO_ZERO_COLUMN_TEST_FLOAT_3DNOW |
+ mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
+ or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
+ jnz short .columnDCT |
+ |
+ pushpic ebx ; save GOT address |
+ mov ebx, DWORD [DWBLOCK(3,0,esi,SIZEOF_JCOEF)] |
+ mov eax, DWORD [DWBLOCK(4,0,esi,SIZEOF_JCOEF)] |
+ or ebx, DWORD [DWBLOCK(5,0,esi,SIZEOF_JCOEF)] |
+ or eax, DWORD [DWBLOCK(6,0,esi,SIZEOF_JCOEF)] |
+ or ebx, DWORD [DWBLOCK(7,0,esi,SIZEOF_JCOEF)] |
+ or eax,ebx |
+ poppic ebx ; restore GOT address |
+ jnz short .columnDCT |
+ |
+ ; -- AC terms all zero |
+ |
+ movd mm0, DWORD [DWBLOCK(0,0,esi,SIZEOF_JCOEF)] |
+ |
+ punpcklwd mm0,mm0 |
+ psrad mm0,(DWORD_BIT-WORD_BIT) |
+ pi2fd mm0,mm0 |
+ |
+ pfmul mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ |
+ movq mm1,mm0 |
+ punpckldq mm0,mm0 |
+ punpckhdq mm1,mm1 |
+ |
+ movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], mm0 |
+ movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], mm0 |
+ movq MMWORD [MMBLOCK(0,2,edi,SIZEOF_FAST_FLOAT)], mm0 |
+ movq MMWORD [MMBLOCK(0,3,edi,SIZEOF_FAST_FLOAT)], mm0 |
+ movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], mm1 |
+ movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], mm1 |
+ movq MMWORD [MMBLOCK(1,2,edi,SIZEOF_FAST_FLOAT)], mm1 |
+ movq MMWORD [MMBLOCK(1,3,edi,SIZEOF_FAST_FLOAT)], mm1 |
+ jmp near .nextcolumn |
+ alignx 16,7 |
+%endif |
+.columnDCT: |
+ |
+ ; -- Even part |
+ |
+ movd mm0, DWORD [DWBLOCK(0,0,esi,SIZEOF_JCOEF)] |
+ movd mm1, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
+ movd mm2, DWORD [DWBLOCK(4,0,esi,SIZEOF_JCOEF)] |
+ movd mm3, DWORD [DWBLOCK(6,0,esi,SIZEOF_JCOEF)] |
+ |
+ punpcklwd mm0,mm0 |
+ punpcklwd mm1,mm1 |
+ psrad mm0,(DWORD_BIT-WORD_BIT) |
+ psrad mm1,(DWORD_BIT-WORD_BIT) |
+ pi2fd mm0,mm0 |
+ pi2fd mm1,mm1 |
+ |
+ pfmul mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ pfmul mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ |
+ punpcklwd mm2,mm2 |
+ punpcklwd mm3,mm3 |
+ psrad mm2,(DWORD_BIT-WORD_BIT) |
+ psrad mm3,(DWORD_BIT-WORD_BIT) |
+ pi2fd mm2,mm2 |
+ pi2fd mm3,mm3 |
+ |
+ pfmul mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ pfmul mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ |
+ movq mm4,mm0 |
+ movq mm5,mm1 |
+ pfsub mm0,mm2 ; mm0=tmp11 |
+ pfsub mm1,mm3 |
+ pfadd mm4,mm2 ; mm4=tmp10 |
+ pfadd mm5,mm3 ; mm5=tmp13 |
+ |
+ pfmul mm1,[GOTOFF(ebx,PD_1_414)] |
+ pfsub mm1,mm5 ; mm1=tmp12 |
+ |
+ movq mm6,mm4 |
+ movq mm7,mm0 |
+ pfsub mm4,mm5 ; mm4=tmp3 |
+ pfsub mm0,mm1 ; mm0=tmp2 |
+ pfadd mm6,mm5 ; mm6=tmp0 |
+ pfadd mm7,mm1 ; mm7=tmp1 |
+ |
+ movq MMWORD [wk(1)], mm4 ; tmp3 |
+ movq MMWORD [wk(0)], mm0 ; tmp2 |
+ |
+ ; -- Odd part |
+ |
+ movd mm2, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
+ movd mm3, DWORD [DWBLOCK(3,0,esi,SIZEOF_JCOEF)] |
+ movd mm5, DWORD [DWBLOCK(5,0,esi,SIZEOF_JCOEF)] |
+ movd mm1, DWORD [DWBLOCK(7,0,esi,SIZEOF_JCOEF)] |
+ |
+ punpcklwd mm2,mm2 |
+ punpcklwd mm3,mm3 |
+ psrad mm2,(DWORD_BIT-WORD_BIT) |
+ psrad mm3,(DWORD_BIT-WORD_BIT) |
+ pi2fd mm2,mm2 |
+ pi2fd mm3,mm3 |
+ |
+ pfmul mm2, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ pfmul mm3, MMWORD [MMBLOCK(3,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ |
+ punpcklwd mm5,mm5 |
+ punpcklwd mm1,mm1 |
+ psrad mm5,(DWORD_BIT-WORD_BIT) |
+ psrad mm1,(DWORD_BIT-WORD_BIT) |
+ pi2fd mm5,mm5 |
+ pi2fd mm1,mm1 |
+ |
+ pfmul mm5, MMWORD [MMBLOCK(5,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ pfmul mm1, MMWORD [MMBLOCK(7,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
+ |
+ movq mm4,mm2 |
+ movq mm0,mm5 |
+ pfadd mm2,mm1 ; mm2=z11 |
+ pfadd mm5,mm3 ; mm5=z13 |
+ pfsub mm4,mm1 ; mm4=z12 |
+ pfsub mm0,mm3 ; mm0=z10 |
+ |
+ movq mm1,mm2 |
+ pfsub mm2,mm5 |
+ pfadd mm1,mm5 ; mm1=tmp7 |
+ |
+ pfmul mm2,[GOTOFF(ebx,PD_1_414)] ; mm2=tmp11 |
+ |
+ movq mm3,mm0 |
+ pfadd mm0,mm4 |
+ pfmul mm0,[GOTOFF(ebx,PD_1_847)] ; mm0=z5 |
+ pfmul mm3,[GOTOFF(ebx,PD_2_613)] ; mm3=(z10 * 2.613125930) |
+ pfmul mm4,[GOTOFF(ebx,PD_1_082)] ; mm4=(z12 * 1.082392200) |
+ pfsubr mm3,mm0 ; mm3=tmp12 |
+ pfsub mm4,mm0 ; mm4=tmp10 |
+ |
+ ; -- Final output stage |
+ |
+ pfsub mm3,mm1 ; mm3=tmp6 |
+ movq mm5,mm6 |
+ movq mm0,mm7 |
+ pfadd mm6,mm1 ; mm6=data0=(00 01) |
+ pfadd mm7,mm3 ; mm7=data1=(10 11) |
+ pfsub mm5,mm1 ; mm5=data7=(70 71) |
+ pfsub mm0,mm3 ; mm0=data6=(60 61) |
+ pfsub mm2,mm3 ; mm2=tmp5 |
+ |
+ movq mm1,mm6 ; transpose coefficients |
+ punpckldq mm6,mm7 ; mm6=(00 10) |
+ punpckhdq mm1,mm7 ; mm1=(01 11) |
+ movq mm3,mm0 ; transpose coefficients |
+ punpckldq mm0,mm5 ; mm0=(60 70) |
+ punpckhdq mm3,mm5 ; mm3=(61 71) |
+ |
+ movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], mm6 |
+ movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], mm1 |
+ movq MMWORD [MMBLOCK(0,3,edi,SIZEOF_FAST_FLOAT)], mm0 |
+ movq MMWORD [MMBLOCK(1,3,edi,SIZEOF_FAST_FLOAT)], mm3 |
+ |
+ movq mm7, MMWORD [wk(0)] ; mm7=tmp2 |
+ movq mm5, MMWORD [wk(1)] ; mm5=tmp3 |
+ |
+ pfadd mm4,mm2 ; mm4=tmp4 |
+ movq mm6,mm7 |
+ movq mm1,mm5 |
+ pfadd mm7,mm2 ; mm7=data2=(20 21) |
+ pfadd mm5,mm4 ; mm5=data4=(40 41) |
+ pfsub mm6,mm2 ; mm6=data5=(50 51) |
+ pfsub mm1,mm4 ; mm1=data3=(30 31) |
+ |
+ movq mm0,mm7 ; transpose coefficients |
+ punpckldq mm7,mm1 ; mm7=(20 30) |
+ punpckhdq mm0,mm1 ; mm0=(21 31) |
+ movq mm3,mm5 ; transpose coefficients |
+ punpckldq mm5,mm6 ; mm5=(40 50) |
+ punpckhdq mm3,mm6 ; mm3=(41 51) |
+ |
+ movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], mm7 |
+ movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], mm0 |
+ movq MMWORD [MMBLOCK(0,2,edi,SIZEOF_FAST_FLOAT)], mm5 |
+ movq MMWORD [MMBLOCK(1,2,edi,SIZEOF_FAST_FLOAT)], mm3 |
+ |
+.nextcolumn: |
+ add esi, byte 2*SIZEOF_JCOEF ; coef_block |
+ add edx, byte 2*SIZEOF_FLOAT_MULT_TYPE ; quantptr |
+ add edi, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT ; wsptr |
+ dec ecx ; ctr |
+ jnz near .columnloop |
+ |
+ ; -- Prefetch the next coefficient block |
+ |
+ prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 0*32] |
+ prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 1*32] |
+ prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 2*32] |
+ prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 3*32] |
+ |
+ ; ---- Pass 2: process rows from work array, store into output array. |
+ |
+ mov eax, [original_ebp] |
+ lea esi, [workspace] ; FAST_FLOAT * wsptr |
+ mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) |
+ mov eax, JDIMENSION [output_col(eax)] |
+ mov ecx, DCTSIZE/2 ; ctr |
+ alignx 16,7 |
+.rowloop: |
+ |
+ ; -- Even part |
+ |
+ movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)] |
+ movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_FAST_FLOAT)] |
+ movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_FAST_FLOAT)] |
+ movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_FAST_FLOAT)] |
+ |
+ movq mm4,mm0 |
+ movq mm5,mm1 |
+ pfsub mm0,mm2 ; mm0=tmp11 |
+ pfsub mm1,mm3 |
+ pfadd mm4,mm2 ; mm4=tmp10 |
+ pfadd mm5,mm3 ; mm5=tmp13 |
+ |
+ pfmul mm1,[GOTOFF(ebx,PD_1_414)] |
+ pfsub mm1,mm5 ; mm1=tmp12 |
+ |
+ movq mm6,mm4 |
+ movq mm7,mm0 |
+ pfsub mm4,mm5 ; mm4=tmp3 |
+ pfsub mm0,mm1 ; mm0=tmp2 |
+ pfadd mm6,mm5 ; mm6=tmp0 |
+ pfadd mm7,mm1 ; mm7=tmp1 |
+ |
+ movq MMWORD [wk(1)], mm4 ; tmp3 |
+ movq MMWORD [wk(0)], mm0 ; tmp2 |
+ |
+ ; -- Odd part |
+ |
+ movq mm2, MMWORD [MMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)] |
+ movq mm3, MMWORD [MMBLOCK(3,0,esi,SIZEOF_FAST_FLOAT)] |
+ movq mm5, MMWORD [MMBLOCK(5,0,esi,SIZEOF_FAST_FLOAT)] |
+ movq mm1, MMWORD [MMBLOCK(7,0,esi,SIZEOF_FAST_FLOAT)] |
+ |
+ movq mm4,mm2 |
+ movq mm0,mm5 |
+ pfadd mm2,mm1 ; mm2=z11 |
+ pfadd mm5,mm3 ; mm5=z13 |
+ pfsub mm4,mm1 ; mm4=z12 |
+ pfsub mm0,mm3 ; mm0=z10 |
+ |
+ movq mm1,mm2 |
+ pfsub mm2,mm5 |
+ pfadd mm1,mm5 ; mm1=tmp7 |
+ |
+ pfmul mm2,[GOTOFF(ebx,PD_1_414)] ; mm2=tmp11 |
+ |
+ movq mm3,mm0 |
+ pfadd mm0,mm4 |
+ pfmul mm0,[GOTOFF(ebx,PD_1_847)] ; mm0=z5 |
+ pfmul mm3,[GOTOFF(ebx,PD_2_613)] ; mm3=(z10 * 2.613125930) |
+ pfmul mm4,[GOTOFF(ebx,PD_1_082)] ; mm4=(z12 * 1.082392200) |
+ pfsubr mm3,mm0 ; mm3=tmp12 |
+ pfsub mm4,mm0 ; mm4=tmp10 |
+ |
+ ; -- Final output stage |
+ |
+ pfsub mm3,mm1 ; mm3=tmp6 |
+ movq mm5,mm6 |
+ movq mm0,mm7 |
+ pfadd mm6,mm1 ; mm6=data0=(00 10) |
+ pfadd mm7,mm3 ; mm7=data1=(01 11) |
+ pfsub mm5,mm1 ; mm5=data7=(07 17) |
+ pfsub mm0,mm3 ; mm0=data6=(06 16) |
+ pfsub mm2,mm3 ; mm2=tmp5 |
+ |
+ movq mm1,[GOTOFF(ebx,PD_RNDINT_MAGIC)] ; mm1=[PD_RNDINT_MAGIC] |
+ pcmpeqd mm3,mm3 |
+ psrld mm3,WORD_BIT ; mm3={0xFFFF 0x0000 0xFFFF 0x0000} |
+ |
+ pfadd mm6,mm1 ; mm6=roundint(data0/8)=(00 ** 10 **) |
+ pfadd mm7,mm1 ; mm7=roundint(data1/8)=(01 ** 11 **) |
+ pfadd mm0,mm1 ; mm0=roundint(data6/8)=(06 ** 16 **) |
+ pfadd mm5,mm1 ; mm5=roundint(data7/8)=(07 ** 17 **) |
+ |
+ pand mm6,mm3 ; mm6=(00 -- 10 --) |
+ pslld mm7,WORD_BIT ; mm7=(-- 01 -- 11) |
+ pand mm0,mm3 ; mm0=(06 -- 16 --) |
+ pslld mm5,WORD_BIT ; mm5=(-- 07 -- 17) |
+ por mm6,mm7 ; mm6=(00 01 10 11) |
+ por mm0,mm5 ; mm0=(06 07 16 17) |
+ |
+ movq mm1, MMWORD [wk(0)] ; mm1=tmp2 |
+ movq mm3, MMWORD [wk(1)] ; mm3=tmp3 |
+ |
+ pfadd mm4,mm2 ; mm4=tmp4 |
+ movq mm7,mm1 |
+ movq mm5,mm3 |
+ pfadd mm1,mm2 ; mm1=data2=(02 12) |
+ pfadd mm3,mm4 ; mm3=data4=(04 14) |
+ pfsub mm7,mm2 ; mm7=data5=(05 15) |
+ pfsub mm5,mm4 ; mm5=data3=(03 13) |
+ |
+ movq mm2,[GOTOFF(ebx,PD_RNDINT_MAGIC)] ; mm2=[PD_RNDINT_MAGIC] |
+ pcmpeqd mm4,mm4 |
+ psrld mm4,WORD_BIT ; mm4={0xFFFF 0x0000 0xFFFF 0x0000} |
+ |
+ pfadd mm3,mm2 ; mm3=roundint(data4/8)=(04 ** 14 **) |
+ pfadd mm7,mm2 ; mm7=roundint(data5/8)=(05 ** 15 **) |
+ pfadd mm1,mm2 ; mm1=roundint(data2/8)=(02 ** 12 **) |
+ pfadd mm5,mm2 ; mm5=roundint(data3/8)=(03 ** 13 **) |
+ |
+ pand mm3,mm4 ; mm3=(04 -- 14 --) |
+ pslld mm7,WORD_BIT ; mm7=(-- 05 -- 15) |
+ pand mm1,mm4 ; mm1=(02 -- 12 --) |
+ pslld mm5,WORD_BIT ; mm5=(-- 03 -- 13) |
+ por mm3,mm7 ; mm3=(04 05 14 15) |
+ por mm1,mm5 ; mm1=(02 03 12 13) |
+ |
+ movq mm2,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm2=[PB_CENTERJSAMP] |
+ |
+ packsswb mm6,mm3 ; mm6=(00 01 10 11 04 05 14 15) |
+ packsswb mm1,mm0 ; mm1=(02 03 12 13 06 07 16 17) |
+ paddb mm6,mm2 |
+ paddb mm1,mm2 |
+ |
+ movq mm4,mm6 ; transpose coefficients(phase 2) |
+ punpcklwd mm6,mm1 ; mm6=(00 01 02 03 10 11 12 13) |
+ punpckhwd mm4,mm1 ; mm4=(04 05 06 07 14 15 16 17) |
+ |
+ movq mm7,mm6 ; transpose coefficients(phase 3) |
+ punpckldq mm6,mm4 ; mm6=(00 01 02 03 04 05 06 07) |
+ punpckhdq mm7,mm4 ; mm7=(10 11 12 13 14 15 16 17) |
+ |
+ pushpic ebx ; save GOT address |
+ |
+ mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] |
+ mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] |
+ movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm6 |
+ movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm7 |
+ |
+ poppic ebx ; restore GOT address |
+ |
+ add esi, byte 2*SIZEOF_FAST_FLOAT ; wsptr |
+ add edi, byte 2*SIZEOF_JSAMPROW |
+ dec ecx ; ctr |
+ jnz near .rowloop |
+ |
+ femms ; empty MMX/3DNow! state |
+ |
+ pop edi |
+ pop esi |
+; pop edx ; need not be preserved |
+; pop ecx ; need not be preserved |
+ pop ebx |
+ mov esp,ebp ; esp <- aligned ebp |
+ pop esp ; esp <- original ebp |
+ pop ebp |
+ ret |
+ |
+; For some reason, the OS X linker does not honor the request to align the |
+; segment unless we do this. |
+ align 16 |