kc3-lang/libjpeg-turbo/simd/i386/jquant-3dn.asm
Branch
-
Show log
Commit
-
Hash : 5e27ca23
Author :
Date : 2025-09-19T14:21:49
x86: Reformat NASM code to improve readability (and simplify the checkstyle script)
-
simd/i386/jquant-3dn.asm
-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
; ; Sample data conversion and quantization (32-bit 3DNow! & 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 "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; Load data into workspace, applying unsigned->signed conversion ; ; GLOBAL(void) ; jsimd_convsamp_float_3dnow(JSAMPARRAY sample_data, JDIMENSION start_col, ; FAST_FLOAT *workspace) %define sample_data ebp + 8 ; JSAMPARRAY sample_data %define start_col ebp + 12 ; JDIMENSION start_col %define workspace ebp + 16 ; FAST_FLOAT *workspace align 32 GLOBAL_FUNCTION(jsimd_convsamp_float_3dnow) EXTN(jsimd_convsamp_float_3dnow): push ebp mov ebp, esp push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi pcmpeqw mm7, mm7 psllw mm7, 7 packsswb mm7, mm7 ; mm7 = PB_CENTERJSAMPLE (0x808080..) mov esi, JSAMPARRAY [sample_data] ; (JSAMPROW *) mov eax, JDIMENSION [start_col] mov edi, POINTER [workspace] ; (DCTELEM *) mov ecx, DCTSIZE / 2 ALIGNX 16, 7 .convloop: mov ebx, JSAMPROW [esi + 0 * SIZEOF_JSAMPROW] ; (JSAMPLE *) mov edx, JSAMPROW [esi + 1 * SIZEOF_JSAMPROW] ; (JSAMPLE *) movq mm0, MMWORD [ebx + eax * SIZEOF_JSAMPLE] movq mm1, MMWORD [edx + eax * SIZEOF_JSAMPLE] psubb mm0, mm7 ; mm0 = (01234567) psubb mm1, mm7 ; mm1 = (89abcdef) punpcklbw mm2, mm0 ; mm2 = (*0*1*2*3) punpckhbw mm0, mm0 ; mm0 = (*4*5*6*7) punpcklbw mm3, mm1 ; mm3 = (*8*9*a*b) punpckhbw mm1, mm1 ; mm1 = (*c*d*e*f) punpcklwd mm4, mm2 ; mm4 = (***0***1) punpckhwd mm2, mm2 ; mm2 = (***2***3) punpcklwd mm5, mm0 ; mm5 = (***4***5) punpckhwd mm0, mm0 ; mm0 = (***6***7) psrad mm4, (DWORD_BIT - BYTE_BIT) ; mm4 = (01) psrad mm2, (DWORD_BIT - BYTE_BIT) ; mm2 = (23) pi2fd mm4, mm4 pi2fd mm2, mm2 psrad mm5, (DWORD_BIT - BYTE_BIT) ; mm5 = (45) psrad mm0, (DWORD_BIT - BYTE_BIT) ; mm0 = (67) pi2fd mm5, mm5 pi2fd mm0, mm0 movq MMWORD [MMBLOCK(0, 0, edi, SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(0, 1, edi, SIZEOF_FAST_FLOAT)], mm2 movq MMWORD [MMBLOCK(0, 2, edi, SIZEOF_FAST_FLOAT)], mm5 movq MMWORD [MMBLOCK(0, 3, edi, SIZEOF_FAST_FLOAT)], mm0 punpcklwd mm6, mm3 ; mm6 = (***8***9) punpckhwd mm3, mm3 ; mm3 = (***a***b) punpcklwd mm4, mm1 ; mm4 = (***c***d) punpckhwd mm1, mm1 ; mm1 = (***e***f) psrad mm6, (DWORD_BIT - BYTE_BIT) ; mm6 = (89) psrad mm3, (DWORD_BIT - BYTE_BIT) ; mm3 = (ab) pi2fd mm6, mm6 pi2fd mm3, mm3 psrad mm4, (DWORD_BIT - BYTE_BIT) ; mm4 = (cd) psrad mm1, (DWORD_BIT - BYTE_BIT) ; mm1 = (ef) pi2fd mm4, mm4 pi2fd mm1, mm1 movq MMWORD [MMBLOCK(1, 0, edi, SIZEOF_FAST_FLOAT)], mm6 movq MMWORD [MMBLOCK(1, 1, edi, SIZEOF_FAST_FLOAT)], mm3 movq MMWORD [MMBLOCK(1, 2, edi, SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(1, 3, edi, SIZEOF_FAST_FLOAT)], mm1 add esi, byte 2 * SIZEOF_JSAMPROW add edi, byte 2 * DCTSIZE * SIZEOF_FAST_FLOAT dec ecx jnz near .convloop femms ; empty MMX/3DNow! state pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx pop ebp ret ; -------------------------------------------------------------------------- ; ; Quantize/descale the coefficients, and store into coef_block ; ; GLOBAL(void) ; jsimd_quantize_float_3dnow(JCOEFPTR coef_block, FAST_FLOAT *divisors, ; FAST_FLOAT *workspace) %define coef_block ebp + 8 ; JCOEFPTR coef_block %define divisors ebp + 12 ; FAST_FLOAT *divisors %define workspace ebp + 16 ; FAST_FLOAT *workspace align 32 GLOBAL_FUNCTION(jsimd_quantize_float_3dnow) EXTN(jsimd_quantize_float_3dnow): push ebp mov ebp, esp ; push ebx ; unused ; push ecx ; unused ; push edx ; need not be preserved push esi push edi mov eax, 0x4B400000 ; (float)0x00C00000 (rndint_magic) movd mm7, eax punpckldq mm7, mm7 ; mm7 = { 12582912.0F 12582912.0F } mov esi, POINTER [workspace] mov edx, POINTER [divisors] mov edi, JCOEFPTR [coef_block] mov eax, DCTSIZE2 / 16 ALIGNX 16, 7 .quantloop: movq mm0, MMWORD [MMBLOCK(0, 0, esi, SIZEOF_FAST_FLOAT)] movq mm1, MMWORD [MMBLOCK(0, 1, esi, SIZEOF_FAST_FLOAT)] pfmul mm0, MMWORD [MMBLOCK(0, 0, edx, SIZEOF_FAST_FLOAT)] pfmul mm1, MMWORD [MMBLOCK(0, 1, edx, SIZEOF_FAST_FLOAT)] movq mm2, MMWORD [MMBLOCK(0, 2, esi, SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(0, 3, esi, SIZEOF_FAST_FLOAT)] pfmul mm2, MMWORD [MMBLOCK(0, 2, edx, SIZEOF_FAST_FLOAT)] pfmul mm3, MMWORD [MMBLOCK(0, 3, edx, SIZEOF_FAST_FLOAT)] pfadd mm0, mm7 ; mm0 = (00 ** 01 **) pfadd mm1, mm7 ; mm1 = (02 ** 03 **) pfadd mm2, mm7 ; mm0 = (04 ** 05 **) pfadd mm3, mm7 ; mm1 = (06 ** 07 **) movq mm4, mm0 punpcklwd mm0, mm1 ; mm0 = (00 02 ** **) punpckhwd mm4, mm1 ; mm4 = (01 03 ** **) movq mm5, mm2 punpcklwd mm2, mm3 ; mm2 = (04 06 ** **) punpckhwd mm5, mm3 ; mm5 = (05 07 ** **) punpcklwd mm0, mm4 ; mm0 = (00 01 02 03) punpcklwd mm2, mm5 ; mm2 = (04 05 06 07) movq mm6, MMWORD [MMBLOCK(1, 0, esi, SIZEOF_FAST_FLOAT)] movq mm1, MMWORD [MMBLOCK(1, 1, esi, SIZEOF_FAST_FLOAT)] pfmul mm6, MMWORD [MMBLOCK(1, 0, edx, SIZEOF_FAST_FLOAT)] pfmul mm1, MMWORD [MMBLOCK(1, 1, edx, SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(1, 2, esi, SIZEOF_FAST_FLOAT)] movq mm4, MMWORD [MMBLOCK(1, 3, esi, SIZEOF_FAST_FLOAT)] pfmul mm3, MMWORD [MMBLOCK(1, 2, edx, SIZEOF_FAST_FLOAT)] pfmul mm4, MMWORD [MMBLOCK(1, 3, edx, SIZEOF_FAST_FLOAT)] pfadd mm6, mm7 ; mm0 = (10 ** 11 **) pfadd mm1, mm7 ; mm4 = (12 ** 13 **) pfadd mm3, mm7 ; mm0 = (14 ** 15 **) pfadd mm4, mm7 ; mm4 = (16 ** 17 **) movq mm5, mm6 punpcklwd mm6, mm1 ; mm6 = (10 12 ** **) punpckhwd mm5, mm1 ; mm5 = (11 13 ** **) movq mm1, mm3 punpcklwd mm3, mm4 ; mm3 = (14 16 ** **) punpckhwd mm1, mm4 ; mm1 = (15 17 ** **) punpcklwd mm6, mm5 ; mm6 = (10 11 12 13) punpcklwd mm3, mm1 ; mm3 = (14 15 16 17) movq MMWORD [MMBLOCK(0, 0, edi, SIZEOF_JCOEF)], mm0 movq MMWORD [MMBLOCK(0, 1, edi, SIZEOF_JCOEF)], mm2 movq MMWORD [MMBLOCK(1, 0, edi, SIZEOF_JCOEF)], mm6 movq MMWORD [MMBLOCK(1, 1, edi, SIZEOF_JCOEF)], mm3 add esi, byte 16 * SIZEOF_FAST_FLOAT add edx, byte 16 * SIZEOF_FAST_FLOAT add edi, byte 16 * SIZEOF_JCOEF dec eax jnz near .quantloop femms ; empty MMX/3DNow! state pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; unused ; pop ebx ; unused 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