kc3-lang/libjpeg-turbo/simd/i386/jdmrgext-mmx.asm
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Hash : 5e27ca23
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Date : 2025-09-19T14:21:49
x86: Reformat NASM code to improve readability (and simplify the checkstyle script)
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simd/i386/jdmrgext-mmx.asm
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; ; Merged upsampling/color conversion (32-bit MMX) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2016, 2024-2025, D. R. Commander. ; ; Based on the 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) or Yasm. %include "jcolsamp.inc" ; -------------------------------------------------------------------------- ; ; 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 32 GLOBAL_FUNCTION(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 ; --------------- ; NOTE: The values of RGB_RED, RGB_GREEN, and RGB_BLUE determine the ; mapping of components A, B, and C to red, green, and blue. ; ; mmA = (A0 A2 A4 A6 ** ** ** **) = AE ; mmB = (A1 A3 A5 A7 ** ** ** **) = AO ; mmC = (B0 B2 B4 B6 ** ** ** **) = BE ; mmD = (B1 B3 B5 B7 ** ** ** **) = BO ; mmE = (C0 C2 C4 C6 ** ** ** **) = CE ; mmF = (C1 C3 C5 C7 ** ** ** **) = CO ; mmG = (** ** ** ** ** ** ** **) ; mmH = (** ** ** ** ** ** ** **) punpcklbw mmA, mmC ; mmA = (A0 B0 A2 B2 A4 B4 A6 B6) punpcklbw mmE, mmB ; mmE = (C0 A1 C2 A3 C4 A5 C6 A7) punpcklbw mmD, mmF ; mmD = (B1 C1 B3 C3 B5 C5 B7 C7) movq mmG, mmA movq mmH, mmA punpcklwd mmA, mmE ; mmA = (A0 B0 C0 A1 A2 B2 C2 A3) punpckhwd mmG, mmE ; mmG = (A4 B4 C4 A5 A6 B6 C6 A7) psrlq mmH, 2 * BYTE_BIT ; mmH = (A2 B2 A4 B4 A6 B6 -- --) psrlq mmE, 2 * BYTE_BIT ; mmE = (C2 A3 C4 A5 C6 A7 -- --) movq mmC, mmD movq mmB, mmD punpcklwd mmD, mmH ; mmD = (B1 C1 A2 B2 B3 C3 A4 B4) punpckhwd mmC, mmH ; mmC = (B5 C5 A6 B6 B7 C7 -- --) psrlq mmB, 2 * BYTE_BIT ; mmB = (B3 C3 B5 C5 B7 C7 -- --) movq mmF, mmE punpcklwd mmE, mmB ; mmE = (C2 A3 B3 C3 C4 A5 B5 C5) punpckhwd mmF, mmB ; mmF = (C6 A7 B7 C7 -- -- -- --) punpckldq mmA, mmD ; mmA = (A0 B0 C0 A1 B1 C1 A2 B2) punpckldq mmE, mmG ; mmE = (C2 A3 B3 C3 A4 B4 C4 A5) punpckldq mmC, mmF ; mmC = (B5 C5 A6 B6 C6 A7 B7 C7) 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 ; NOTE: The values of RGB_RED, RGB_GREEN, and RGB_BLUE determine the ; mapping of components A, B, C, and D to red, green, and blue. ; ; mmA = (A0 A2 A4 A6 ** ** ** **) = AE ; mmB = (A1 A3 A5 A7 ** ** ** **) = AO ; mmC = (B0 B2 B4 B6 ** ** ** **) = BE ; mmD = (B1 B3 B5 B7 ** ** ** **) = BO ; mmE = (C0 C2 C4 C6 ** ** ** **) = CE ; mmF = (C1 C3 C5 C7 ** ** ** **) = CO ; mmG = (D0 D2 D4 D6 ** ** ** **) = DE ; mmH = (D1 D3 D5 D7 ** ** ** **) = DO punpcklbw mmA, mmC ; mmA = (A0 B0 A2 B2 A4 B4 A6 B6) punpcklbw mmE, mmG ; mmE = (C0 D0 C2 D2 C4 D4 C6 D6) punpcklbw mmB, mmD ; mmB = (A1 B1 A3 B3 A5 B5 A7 B7) punpcklbw mmF, mmH ; mmF = (C1 D1 C3 D3 C5 D5 C7 D7) movq mmC, mmA punpcklwd mmA, mmE ; mmA = (A0 B0 C0 D0 A2 B2 C2 D2) punpckhwd mmC, mmE ; mmC = (A4 B4 C4 D4 A6 B6 C6 D6) movq mmG, mmB punpcklwd mmB, mmF ; mmB = (A1 B1 C1 D1 A3 B3 C3 D3) punpckhwd mmG, mmF ; mmG = (A5 B5 C5 D5 A7 B7 C7 D7) movq mmD, mmA punpckldq mmA, mmB ; mmA = (A0 B0 C0 D0 A1 B1 C1 D1) punpckhdq mmD, mmB ; mmD = (A2 B2 C2 D2 A3 B3 C3 D3) movq mmH, mmC punpckldq mmC, mmG ; mmC = (A4 B4 C4 D4 A5 B5 C5 D5) punpckhdq mmH, mmG ; mmH = (A6 B6 C6 D6 A7 B7 C7 D7) 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 32 GLOBAL_FUNCTION(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 32