Index: third_party/libjpeg_turbo/simd/jdmrgmmx.asm |
=================================================================== |
--- third_party/libjpeg_turbo/simd/jdmrgmmx.asm (revision 0) |
+++ third_party/libjpeg_turbo/simd/jdmrgmmx.asm (revision 0) |
@@ -0,0 +1,466 @@ |
+; |
+; jdmrgmmx.asm - merged upsampling/color conversion (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 |
+; |
+; [TAB8] |
+ |
+%include "jcolsamp.inc" |
+ |
+; -------------------------------------------------------------------------- |
+ SECTION SEG_TEXT |
+ BITS 32 |
+; |
+; Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical. |
+; |
+; GLOBAL(void) |
+; jsimd_h2v1_merged_upsample_mmx (JDIMENSION output_width, |
+; JSAMPIMAGE input_buf, |
+; JDIMENSION in_row_group_ctr, |
+; JSAMPARRAY output_buf); |
+; |
+ |
+%define output_width(b) (b)+8 ; JDIMENSION output_width |
+%define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf |
+%define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr |
+%define output_buf(b) (b)+20 ; JSAMPARRAY output_buf |
+ |
+%define original_ebp ebp+0 |
+%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] |
+%define WK_NUM 3 |
+%define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr |
+ |
+ align 16 |
+ global EXTN(jsimd_h2v1_merged_upsample_mmx) |
+ |
+EXTN(jsimd_h2v1_merged_upsample_mmx): |
+ 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, [wk(0)] |
+ pushpic eax ; make a room for GOT address |
+ push ebx |
+; push ecx ; need not be preserved |
+; push edx ; need not be preserved |
+ push esi |
+ push edi |
+ |
+ get_GOT ebx ; get GOT address |
+ movpic POINTER [gotptr], ebx ; save GOT address |
+ |
+ mov ecx, JDIMENSION [output_width(eax)] ; col |
+ test ecx,ecx |
+ jz near .return |
+ |
+ push ecx |
+ |
+ mov edi, JSAMPIMAGE [input_buf(eax)] |
+ mov ecx, JDIMENSION [in_row_group_ctr(eax)] |
+ mov esi, JSAMPARRAY [edi+0*SIZEOF_JSAMPARRAY] |
+ mov ebx, JSAMPARRAY [edi+1*SIZEOF_JSAMPARRAY] |
+ mov edx, JSAMPARRAY [edi+2*SIZEOF_JSAMPARRAY] |
+ mov edi, JSAMPARRAY [output_buf(eax)] |
+ mov esi, JSAMPROW [esi+ecx*SIZEOF_JSAMPROW] ; inptr0 |
+ mov ebx, JSAMPROW [ebx+ecx*SIZEOF_JSAMPROW] ; inptr1 |
+ mov edx, JSAMPROW [edx+ecx*SIZEOF_JSAMPROW] ; inptr2 |
+ mov edi, JSAMPROW [edi] ; outptr |
+ |
+ pop ecx ; col |
+ |
+ alignx 16,7 |
+.columnloop: |
+ movpic eax, POINTER [gotptr] ; load GOT address (eax) |
+ |
+ movq mm6, MMWORD [ebx] ; mm6=Cb(01234567) |
+ movq mm7, MMWORD [edx] ; mm7=Cr(01234567) |
+ |
+ pxor mm1,mm1 ; mm1=(all 0's) |
+ pcmpeqw mm3,mm3 |
+ psllw mm3,7 ; mm3={0xFF80 0xFF80 0xFF80 0xFF80} |
+ |
+ movq mm4,mm6 |
+ punpckhbw mm6,mm1 ; mm6=Cb(4567)=CbH |
+ punpcklbw mm4,mm1 ; mm4=Cb(0123)=CbL |
+ movq mm0,mm7 |
+ punpckhbw mm7,mm1 ; mm7=Cr(4567)=CrH |
+ punpcklbw mm0,mm1 ; mm0=Cr(0123)=CrL |
+ |
+ paddw mm6,mm3 |
+ paddw mm4,mm3 |
+ paddw mm7,mm3 |
+ paddw mm0,mm3 |
+ |
+ ; (Original) |
+ ; R = Y + 1.40200 * Cr |
+ ; G = Y - 0.34414 * Cb - 0.71414 * Cr |
+ ; B = Y + 1.77200 * Cb |
+ ; |
+ ; (This implementation) |
+ ; R = Y + 0.40200 * Cr + Cr |
+ ; G = Y - 0.34414 * Cb + 0.28586 * Cr - Cr |
+ ; B = Y - 0.22800 * Cb + Cb + Cb |
+ |
+ movq mm5,mm6 ; mm5=CbH |
+ movq mm2,mm4 ; mm2=CbL |
+ paddw mm6,mm6 ; mm6=2*CbH |
+ paddw mm4,mm4 ; mm4=2*CbL |
+ movq mm1,mm7 ; mm1=CrH |
+ movq mm3,mm0 ; mm3=CrL |
+ paddw mm7,mm7 ; mm7=2*CrH |
+ paddw mm0,mm0 ; mm0=2*CrL |
+ |
+ pmulhw mm6,[GOTOFF(eax,PW_MF0228)] ; mm6=(2*CbH * -FIX(0.22800)) |
+ pmulhw mm4,[GOTOFF(eax,PW_MF0228)] ; mm4=(2*CbL * -FIX(0.22800)) |
+ pmulhw mm7,[GOTOFF(eax,PW_F0402)] ; mm7=(2*CrH * FIX(0.40200)) |
+ pmulhw mm0,[GOTOFF(eax,PW_F0402)] ; mm0=(2*CrL * FIX(0.40200)) |
+ |
+ paddw mm6,[GOTOFF(eax,PW_ONE)] |
+ paddw mm4,[GOTOFF(eax,PW_ONE)] |
+ psraw mm6,1 ; mm6=(CbH * -FIX(0.22800)) |
+ psraw mm4,1 ; mm4=(CbL * -FIX(0.22800)) |
+ paddw mm7,[GOTOFF(eax,PW_ONE)] |
+ paddw mm0,[GOTOFF(eax,PW_ONE)] |
+ psraw mm7,1 ; mm7=(CrH * FIX(0.40200)) |
+ psraw mm0,1 ; mm0=(CrL * FIX(0.40200)) |
+ |
+ paddw mm6,mm5 |
+ paddw mm4,mm2 |
+ paddw mm6,mm5 ; mm6=(CbH * FIX(1.77200))=(B-Y)H |
+ paddw mm4,mm2 ; mm4=(CbL * FIX(1.77200))=(B-Y)L |
+ paddw mm7,mm1 ; mm7=(CrH * FIX(1.40200))=(R-Y)H |
+ paddw mm0,mm3 ; mm0=(CrL * FIX(1.40200))=(R-Y)L |
+ |
+ movq MMWORD [wk(0)], mm6 ; wk(0)=(B-Y)H |
+ movq MMWORD [wk(1)], mm7 ; wk(1)=(R-Y)H |
+ |
+ movq mm6,mm5 |
+ movq mm7,mm2 |
+ punpcklwd mm5,mm1 |
+ punpckhwd mm6,mm1 |
+ pmaddwd mm5,[GOTOFF(eax,PW_MF0344_F0285)] |
+ pmaddwd mm6,[GOTOFF(eax,PW_MF0344_F0285)] |
+ punpcklwd mm2,mm3 |
+ punpckhwd mm7,mm3 |
+ pmaddwd mm2,[GOTOFF(eax,PW_MF0344_F0285)] |
+ pmaddwd mm7,[GOTOFF(eax,PW_MF0344_F0285)] |
+ |
+ paddd mm5,[GOTOFF(eax,PD_ONEHALF)] |
+ paddd mm6,[GOTOFF(eax,PD_ONEHALF)] |
+ psrad mm5,SCALEBITS |
+ psrad mm6,SCALEBITS |
+ paddd mm2,[GOTOFF(eax,PD_ONEHALF)] |
+ paddd mm7,[GOTOFF(eax,PD_ONEHALF)] |
+ psrad mm2,SCALEBITS |
+ psrad mm7,SCALEBITS |
+ |
+ packssdw mm5,mm6 ; mm5=CbH*-FIX(0.344)+CrH*FIX(0.285) |
+ packssdw mm2,mm7 ; mm2=CbL*-FIX(0.344)+CrL*FIX(0.285) |
+ psubw mm5,mm1 ; mm5=CbH*-FIX(0.344)+CrH*-FIX(0.714)=(G-Y)H |
+ psubw mm2,mm3 ; mm2=CbL*-FIX(0.344)+CrL*-FIX(0.714)=(G-Y)L |
+ |
+ movq MMWORD [wk(2)], mm5 ; wk(2)=(G-Y)H |
+ |
+ mov al,2 ; Yctr |
+ jmp short .Yloop_1st |
+ alignx 16,7 |
+ |
+.Yloop_2nd: |
+ movq mm0, MMWORD [wk(1)] ; mm0=(R-Y)H |
+ movq mm2, MMWORD [wk(2)] ; mm2=(G-Y)H |
+ movq mm4, MMWORD [wk(0)] ; mm4=(B-Y)H |
+ alignx 16,7 |
+ |
+.Yloop_1st: |
+ movq mm7, MMWORD [esi] ; mm7=Y(01234567) |
+ |
+ pcmpeqw mm6,mm6 |
+ psrlw mm6,BYTE_BIT ; mm6={0xFF 0x00 0xFF 0x00 ..} |
+ pand mm6,mm7 ; mm6=Y(0246)=YE |
+ psrlw mm7,BYTE_BIT ; mm7=Y(1357)=YO |
+ |
+ movq mm1,mm0 ; mm1=mm0=(R-Y)(L/H) |
+ movq mm3,mm2 ; mm3=mm2=(G-Y)(L/H) |
+ movq mm5,mm4 ; mm5=mm4=(B-Y)(L/H) |
+ |
+ paddw mm0,mm6 ; mm0=((R-Y)+YE)=RE=(R0 R2 R4 R6) |
+ paddw mm1,mm7 ; mm1=((R-Y)+YO)=RO=(R1 R3 R5 R7) |
+ packuswb mm0,mm0 ; mm0=(R0 R2 R4 R6 ** ** ** **) |
+ packuswb mm1,mm1 ; mm1=(R1 R3 R5 R7 ** ** ** **) |
+ |
+ paddw mm2,mm6 ; mm2=((G-Y)+YE)=GE=(G0 G2 G4 G6) |
+ paddw mm3,mm7 ; mm3=((G-Y)+YO)=GO=(G1 G3 G5 G7) |
+ packuswb mm2,mm2 ; mm2=(G0 G2 G4 G6 ** ** ** **) |
+ packuswb mm3,mm3 ; mm3=(G1 G3 G5 G7 ** ** ** **) |
+ |
+ paddw mm4,mm6 ; mm4=((B-Y)+YE)=BE=(B0 B2 B4 B6) |
+ paddw mm5,mm7 ; mm5=((B-Y)+YO)=BO=(B1 B3 B5 B7) |
+ packuswb mm4,mm4 ; mm4=(B0 B2 B4 B6 ** ** ** **) |
+ packuswb mm5,mm5 ; mm5=(B1 B3 B5 B7 ** ** ** **) |
+ |
+%if RGB_PIXELSIZE == 3 ; --------------- |
+ |
+ ; mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **) |
+ ; mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **) |
+ ; mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **) |
+ ; mmG=(** ** ** ** ** ** ** **), mmH=(** ** ** ** ** ** ** **) |
+ |
+ punpcklbw mmA,mmC ; mmA=(00 10 02 12 04 14 06 16) |
+ punpcklbw mmE,mmB ; mmE=(20 01 22 03 24 05 26 07) |
+ punpcklbw mmD,mmF ; mmD=(11 21 13 23 15 25 17 27) |
+ |
+ movq mmG,mmA |
+ movq mmH,mmA |
+ punpcklwd mmA,mmE ; mmA=(00 10 20 01 02 12 22 03) |
+ punpckhwd mmG,mmE ; mmG=(04 14 24 05 06 16 26 07) |
+ |
+ psrlq mmH,2*BYTE_BIT ; mmH=(02 12 04 14 06 16 -- --) |
+ psrlq mmE,2*BYTE_BIT ; mmE=(22 03 24 05 26 07 -- --) |
+ |
+ movq mmC,mmD |
+ movq mmB,mmD |
+ punpcklwd mmD,mmH ; mmD=(11 21 02 12 13 23 04 14) |
+ punpckhwd mmC,mmH ; mmC=(15 25 06 16 17 27 -- --) |
+ |
+ psrlq mmB,2*BYTE_BIT ; mmB=(13 23 15 25 17 27 -- --) |
+ |
+ movq mmF,mmE |
+ punpcklwd mmE,mmB ; mmE=(22 03 13 23 24 05 15 25) |
+ punpckhwd mmF,mmB ; mmF=(26 07 17 27 -- -- -- --) |
+ |
+ punpckldq mmA,mmD ; mmA=(00 10 20 01 11 21 02 12) |
+ punpckldq mmE,mmG ; mmE=(22 03 13 23 04 14 24 05) |
+ punpckldq mmC,mmF ; mmC=(15 25 06 16 26 07 17 27) |
+ |
+ cmp ecx, byte SIZEOF_MMWORD |
+ jb short .column_st16 |
+ |
+ movq MMWORD [edi+0*SIZEOF_MMWORD], mmA |
+ movq MMWORD [edi+1*SIZEOF_MMWORD], mmE |
+ movq MMWORD [edi+2*SIZEOF_MMWORD], mmC |
+ |
+ sub ecx, byte SIZEOF_MMWORD |
+ jz near .endcolumn |
+ |
+ add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr |
+ add esi, byte SIZEOF_MMWORD ; inptr0 |
+ dec al ; Yctr |
+ jnz near .Yloop_2nd |
+ |
+ add ebx, byte SIZEOF_MMWORD ; inptr1 |
+ add edx, byte SIZEOF_MMWORD ; inptr2 |
+ jmp near .columnloop |
+ alignx 16,7 |
+ |
+.column_st16: |
+ lea ecx, [ecx+ecx*2] ; imul ecx, RGB_PIXELSIZE |
+ cmp ecx, byte 2*SIZEOF_MMWORD |
+ jb short .column_st8 |
+ movq MMWORD [edi+0*SIZEOF_MMWORD], mmA |
+ movq MMWORD [edi+1*SIZEOF_MMWORD], mmE |
+ movq mmA,mmC |
+ sub ecx, byte 2*SIZEOF_MMWORD |
+ add edi, byte 2*SIZEOF_MMWORD |
+ jmp short .column_st4 |
+.column_st8: |
+ cmp ecx, byte SIZEOF_MMWORD |
+ jb short .column_st4 |
+ movq MMWORD [edi+0*SIZEOF_MMWORD], mmA |
+ movq mmA,mmE |
+ sub ecx, byte SIZEOF_MMWORD |
+ add edi, byte SIZEOF_MMWORD |
+.column_st4: |
+ movd eax,mmA |
+ cmp ecx, byte SIZEOF_DWORD |
+ jb short .column_st2 |
+ mov DWORD [edi+0*SIZEOF_DWORD], eax |
+ psrlq mmA,DWORD_BIT |
+ movd eax,mmA |
+ sub ecx, byte SIZEOF_DWORD |
+ add edi, byte SIZEOF_DWORD |
+.column_st2: |
+ cmp ecx, byte SIZEOF_WORD |
+ jb short .column_st1 |
+ mov WORD [edi+0*SIZEOF_WORD], ax |
+ shr eax,WORD_BIT |
+ sub ecx, byte SIZEOF_WORD |
+ add edi, byte SIZEOF_WORD |
+.column_st1: |
+ cmp ecx, byte SIZEOF_BYTE |
+ jb short .endcolumn |
+ mov BYTE [edi+0*SIZEOF_BYTE], al |
+ |
+%else ; RGB_PIXELSIZE == 4 ; ----------- |
+ |
+%ifdef RGBX_FILLER_0XFF |
+ pcmpeqb mm6,mm6 ; mm6=(X0 X2 X4 X6 ** ** ** **) |
+ pcmpeqb mm7,mm7 ; mm7=(X1 X3 X5 X7 ** ** ** **) |
+%else |
+ pxor mm6,mm6 ; mm6=(X0 X2 X4 X6 ** ** ** **) |
+ pxor mm7,mm7 ; mm7=(X1 X3 X5 X7 ** ** ** **) |
+%endif |
+ ; mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **) |
+ ; mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **) |
+ ; mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **) |
+ ; mmG=(30 32 34 36 ** ** ** **), mmH=(31 33 35 37 ** ** ** **) |
+ |
+ punpcklbw mmA,mmC ; mmA=(00 10 02 12 04 14 06 16) |
+ punpcklbw mmE,mmG ; mmE=(20 30 22 32 24 34 26 36) |
+ punpcklbw mmB,mmD ; mmB=(01 11 03 13 05 15 07 17) |
+ punpcklbw mmF,mmH ; mmF=(21 31 23 33 25 35 27 37) |
+ |
+ movq mmC,mmA |
+ punpcklwd mmA,mmE ; mmA=(00 10 20 30 02 12 22 32) |
+ punpckhwd mmC,mmE ; mmC=(04 14 24 34 06 16 26 36) |
+ movq mmG,mmB |
+ punpcklwd mmB,mmF ; mmB=(01 11 21 31 03 13 23 33) |
+ punpckhwd mmG,mmF ; mmG=(05 15 25 35 07 17 27 37) |
+ |
+ movq mmD,mmA |
+ punpckldq mmA,mmB ; mmA=(00 10 20 30 01 11 21 31) |
+ punpckhdq mmD,mmB ; mmD=(02 12 22 32 03 13 23 33) |
+ movq mmH,mmC |
+ punpckldq mmC,mmG ; mmC=(04 14 24 34 05 15 25 35) |
+ punpckhdq mmH,mmG ; mmH=(06 16 26 36 07 17 27 37) |
+ |
+ cmp ecx, byte SIZEOF_MMWORD |
+ jb short .column_st16 |
+ |
+ movq MMWORD [edi+0*SIZEOF_MMWORD], mmA |
+ movq MMWORD [edi+1*SIZEOF_MMWORD], mmD |
+ movq MMWORD [edi+2*SIZEOF_MMWORD], mmC |
+ movq MMWORD [edi+3*SIZEOF_MMWORD], mmH |
+ |
+ sub ecx, byte SIZEOF_MMWORD |
+ jz short .endcolumn |
+ |
+ add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr |
+ add esi, byte SIZEOF_MMWORD ; inptr0 |
+ dec al ; Yctr |
+ jnz near .Yloop_2nd |
+ |
+ add ebx, byte SIZEOF_MMWORD ; inptr1 |
+ add edx, byte SIZEOF_MMWORD ; inptr2 |
+ jmp near .columnloop |
+ alignx 16,7 |
+ |
+.column_st16: |
+ cmp ecx, byte SIZEOF_MMWORD/2 |
+ jb short .column_st8 |
+ movq MMWORD [edi+0*SIZEOF_MMWORD], mmA |
+ movq MMWORD [edi+1*SIZEOF_MMWORD], mmD |
+ movq mmA,mmC |
+ movq mmD,mmH |
+ sub ecx, byte SIZEOF_MMWORD/2 |
+ add edi, byte 2*SIZEOF_MMWORD |
+.column_st8: |
+ cmp ecx, byte SIZEOF_MMWORD/4 |
+ jb short .column_st4 |
+ movq MMWORD [edi+0*SIZEOF_MMWORD], mmA |
+ movq mmA,mmD |
+ sub ecx, byte SIZEOF_MMWORD/4 |
+ add edi, byte 1*SIZEOF_MMWORD |
+.column_st4: |
+ cmp ecx, byte SIZEOF_MMWORD/8 |
+ jb short .endcolumn |
+ movd DWORD [edi+0*SIZEOF_DWORD], mmA |
+ |
+%endif ; RGB_PIXELSIZE ; --------------- |
+ |
+.endcolumn: |
+ emms ; empty MMX state |
+ |
+.return: |
+ 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 |
+ |
+; -------------------------------------------------------------------------- |
+; |
+; Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical. |
+; |
+; GLOBAL(void) |
+; jsimd_h2v2_merged_upsample_mmx (JDIMENSION output_width, |
+; JSAMPIMAGE input_buf, |
+; JDIMENSION in_row_group_ctr, |
+; JSAMPARRAY output_buf); |
+; |
+ |
+%define output_width(b) (b)+8 ; JDIMENSION output_width |
+%define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf |
+%define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr |
+%define output_buf(b) (b)+20 ; JSAMPARRAY output_buf |
+ |
+ align 16 |
+ global EXTN(jsimd_h2v2_merged_upsample_mmx) |
+ |
+EXTN(jsimd_h2v2_merged_upsample_mmx): |
+ push ebp |
+ mov ebp,esp |
+ push ebx |
+; push ecx ; need not be preserved |
+; push edx ; need not be preserved |
+ push esi |
+ push edi |
+ |
+ mov eax, JDIMENSION [output_width(ebp)] |
+ |
+ mov edi, JSAMPIMAGE [input_buf(ebp)] |
+ mov ecx, JDIMENSION [in_row_group_ctr(ebp)] |
+ mov esi, JSAMPARRAY [edi+0*SIZEOF_JSAMPARRAY] |
+ mov ebx, JSAMPARRAY [edi+1*SIZEOF_JSAMPARRAY] |
+ mov edx, JSAMPARRAY [edi+2*SIZEOF_JSAMPARRAY] |
+ mov edi, JSAMPARRAY [output_buf(ebp)] |
+ lea esi, [esi+ecx*SIZEOF_JSAMPROW] |
+ |
+ push edx ; inptr2 |
+ push ebx ; inptr1 |
+ push esi ; inptr00 |
+ mov ebx,esp |
+ |
+ push edi ; output_buf (outptr0) |
+ push ecx ; in_row_group_ctr |
+ push ebx ; input_buf |
+ push eax ; output_width |
+ |
+ call near EXTN(jsimd_h2v1_merged_upsample_mmx) |
+ |
+ add esi, byte SIZEOF_JSAMPROW ; inptr01 |
+ add edi, byte SIZEOF_JSAMPROW ; outptr1 |
+ mov POINTER [ebx+0*SIZEOF_POINTER], esi |
+ mov POINTER [ebx-1*SIZEOF_POINTER], edi |
+ |
+ call near EXTN(jsimd_h2v1_merged_upsample_mmx) |
+ |
+ add esp, byte 7*SIZEOF_DWORD |
+ |
+ pop edi |
+ pop esi |
+; pop edx ; need not be preserved |
+; pop ecx ; need not be preserved |
+ pop ebx |
+ 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 |