annotate src/video/SDL_yuv_mmx.c @ 1407:0c6941483cc6

Whoops, forgot to check in this fix
author Sam Lantinga <slouken@libsdl.org>
date Tue, 21 Feb 2006 18:20:10 +0000
parents d910939febfa
children 40edc79b0926
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #if defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES
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25
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26 #include "SDL_stdinc.h"
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27
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28 #define ASM_ARRAY(x) x[] __asm__("_" #x) __attribute__((used))
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29
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30 static unsigned int ASM_ARRAY(MMX_0080w) = {0x00800080, 0x00800080};
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31 static unsigned int ASM_ARRAY(MMX_00FFw) = {0x00ff00ff, 0x00ff00ff};
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32 static unsigned int ASM_ARRAY(MMX_FF00w) = {0xff00ff00, 0xff00ff00};
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33
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34 static unsigned short ASM_ARRAY(MMX_Ycoeff) = {0x004a, 0x004a, 0x004a, 0x004a};
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35
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36 static unsigned short ASM_ARRAY(MMX_UbluRGB) = {0x0072, 0x0072, 0x0072, 0x0072};
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37 static unsigned short ASM_ARRAY(MMX_VredRGB) = {0x0059, 0x0059, 0x0059, 0x0059};
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38 static unsigned short ASM_ARRAY(MMX_UgrnRGB) = {0xffea, 0xffea, 0xffea, 0xffea};
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39 static unsigned short ASM_ARRAY(MMX_VgrnRGB) = {0xffd2, 0xffd2, 0xffd2, 0xffd2};
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40
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41 static unsigned short ASM_ARRAY(MMX_Ublu5x5) = {0x0081, 0x0081, 0x0081, 0x0081};
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42 static unsigned short ASM_ARRAY(MMX_Vred5x5) = {0x0066, 0x0066, 0x0066, 0x0066};
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43 static unsigned short ASM_ARRAY(MMX_Ugrn555) = {0xffe7, 0xffe7, 0xffe7, 0xffe7};
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44 static unsigned short ASM_ARRAY(MMX_Vgrn555) = {0xffcc, 0xffcc, 0xffcc, 0xffcc};
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45 static unsigned short ASM_ARRAY(MMX_Ugrn565) = {0xffe8, 0xffe8, 0xffe8, 0xffe8};
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46 static unsigned short ASM_ARRAY(MMX_Vgrn565) = {0xffcd, 0xffcd, 0xffcd, 0xffcd};
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47
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48 static unsigned short ASM_ARRAY(MMX_red555) = {0x7c00, 0x7c00, 0x7c00, 0x7c00};
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49 static unsigned short ASM_ARRAY(MMX_red565) = {0xf800, 0xf800, 0xf800, 0xf800};
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50 static unsigned short ASM_ARRAY(MMX_grn555) = {0x03e0, 0x03e0, 0x03e0, 0x03e0};
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51 static unsigned short ASM_ARRAY(MMX_grn565) = {0x07e0, 0x07e0, 0x07e0, 0x07e0};
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52 static unsigned short ASM_ARRAY(MMX_blu5x5) = {0x001f, 0x001f, 0x001f, 0x001f};
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53
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54 /**
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55 This MMX assembler is my first assembler/MMX program ever.
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56 Thus it maybe buggy.
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57 Send patches to:
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58 mvogt@rhrk.uni-kl.de
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59
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60 After it worked fine I have "obfuscated" the code a bit to have
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61 more parallism in the MMX units. This means I moved
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62 initilisation around and delayed other instruction.
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63 Performance measurement did not show that this brought any advantage
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64 but in theory it _should_ be faster this way.
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65
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66 The overall performanve gain to the C based dither was 30%-40%.
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67 The MMX routine calculates 256bit=8RGB values in each cycle
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68 (4 for row1 & 4 for row2)
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69
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70 The red/green/blue.. coefficents are taken from the mpeg_play
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71 player. They look nice, but I dont know if you can have
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72 better values, to avoid integer rounding errors.
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73
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74
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75 IMPORTANT:
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76 ==========
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77
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78 It is a requirement that the cr/cb/lum are 8 byte aligned and
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79 the out are 16byte aligned or you will/may get segfaults
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80
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81 */
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82
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83 void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
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84 unsigned char *lum, unsigned char *cr,
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85 unsigned char *cb, unsigned char *out,
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86 int rows, int cols, int mod )
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87 {
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88 Uint32 *row1;
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89 Uint32 *row2;
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90
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91 unsigned char* y = lum +cols*rows; // Pointer to the end
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92 int x=0;
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93 row1 = (Uint32 *)out; // 32 bit target
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94 row2 = (Uint32 *)out+cols+mod; // start of second row
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95 mod = (mod+cols+mod)*4; // increment for row1 in byte
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96
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97 __asm__ __volatile__ (
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98 /* We don't really care about PIC - the code should be rewritten to use
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99 relative addressing for the static tables, so right now we take the
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100 COW hit on the pages this code resides. Big deal.
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101 This spill is just to reduce register pressure in the PIC case. */
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102 "pushl %%ebx\n"
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103 "movl %0, %%ebx\n"
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104
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105 ".align 8\n"
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106 "1:\n"
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107
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108 // create Cr (result in mm1)
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109 "movd (%%ebx), %%mm1\n" // 0 0 0 0 v3 v2 v1 v0
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110 "pxor %%mm7,%%mm7\n" // 00 00 00 00 00 00 00 00
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111 "movd (%2), %%mm2\n" // 0 0 0 0 l3 l2 l1 l0
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112 "punpcklbw %%mm7,%%mm1\n" // 0 v3 0 v2 00 v1 00 v0
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113 "punpckldq %%mm1,%%mm1\n" // 00 v1 00 v0 00 v1 00 v0
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114 "psubw _MMX_0080w,%%mm1\n" // mm1-128:r1 r1 r0 r0 r1 r1 r0 r0
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115
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116 // create Cr_g (result in mm0)
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117 "movq %%mm1,%%mm0\n" // r1 r1 r0 r0 r1 r1 r0 r0
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118 "pmullw _MMX_VgrnRGB,%%mm0\n"// red*-46dec=0.7136*64
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119 "pmullw _MMX_VredRGB,%%mm1\n"// red*89dec=1.4013*64
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120 "psraw $6, %%mm0\n" // red=red/64
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121 "psraw $6, %%mm1\n" // red=red/64
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122
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123 // create L1 L2 (result in mm2,mm4)
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124 // L2=lum+cols
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125 "movq (%2,%4),%%mm3\n" // 0 0 0 0 L3 L2 L1 L0
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126 "punpckldq %%mm3,%%mm2\n" // L3 L2 L1 L0 l3 l2 l1 l0
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127 "movq %%mm2,%%mm4\n" // L3 L2 L1 L0 l3 l2 l1 l0
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128 "pand _MMX_FF00w,%%mm2\n" // L3 0 L1 0 l3 0 l1 0
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129 "pand _MMX_00FFw,%%mm4\n" // 0 L2 0 L0 0 l2 0 l0
0
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130 "psrlw $8,%%mm2\n" // 0 L3 0 L1 0 l3 0 l1
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131
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132 // create R (result in mm6)
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133 "movq %%mm2,%%mm5\n" // 0 L3 0 L1 0 l3 0 l1
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134 "movq %%mm4,%%mm6\n" // 0 L2 0 L0 0 l2 0 l0
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diff changeset
135 "paddsw %%mm1, %%mm5\n" // lum1+red:x R3 x R1 x r3 x r1
74212992fb08 Initial revision
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parents:
diff changeset
136 "paddsw %%mm1, %%mm6\n" // lum1+red:x R2 x R0 x r2 x r0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
137 "packuswb %%mm5,%%mm5\n" // R3 R1 r3 r1 R3 R1 r3 r1
74212992fb08 Initial revision
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parents:
diff changeset
138 "packuswb %%mm6,%%mm6\n" // R2 R0 r2 r0 R2 R0 r2 r0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
139 "pxor %%mm7,%%mm7\n" // 00 00 00 00 00 00 00 00
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
140 "punpcklbw %%mm5,%%mm6\n" // R3 R2 R1 R0 r3 r2 r1 r0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
141
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parents:
diff changeset
142 // create Cb (result in mm1)
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parents:
diff changeset
143 "movd (%1), %%mm1\n" // 0 0 0 0 u3 u2 u1 u0
74212992fb08 Initial revision
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parents:
diff changeset
144 "punpcklbw %%mm7,%%mm1\n" // 0 u3 0 u2 00 u1 00 u0
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parents:
diff changeset
145 "punpckldq %%mm1,%%mm1\n" // 00 u1 00 u0 00 u1 00 u0
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
146 "psubw _MMX_0080w,%%mm1\n" // mm1-128:u1 u1 u0 u0 u1 u1 u0 u0
0
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parents:
diff changeset
147 // create Cb_g (result in mm5)
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parents:
diff changeset
148 "movq %%mm1,%%mm5\n" // u1 u1 u0 u0 u1 u1 u0 u0
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
149 "pmullw _MMX_UgrnRGB,%%mm5\n" // blue*-109dec=1.7129*64
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
150 "pmullw _MMX_UbluRGB,%%mm1\n" // blue*114dec=1.78125*64
0
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parents:
diff changeset
151 "psraw $6, %%mm5\n" // blue=red/64
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parents:
diff changeset
152 "psraw $6, %%mm1\n" // blue=blue/64
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parents:
diff changeset
153
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parents:
diff changeset
154 // create G (result in mm7)
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parents:
diff changeset
155 "movq %%mm2,%%mm3\n" // 0 L3 0 L1 0 l3 0 l1
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parents:
diff changeset
156 "movq %%mm4,%%mm7\n" // 0 L2 0 L0 0 l2 0 l1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
157 "paddsw %%mm5, %%mm3\n" // lum1+Cb_g:x G3t x G1t x g3t x g1t
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parents:
diff changeset
158 "paddsw %%mm5, %%mm7\n" // lum1+Cb_g:x G2t x G0t x g2t x g0t
74212992fb08 Initial revision
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parents:
diff changeset
159 "paddsw %%mm0, %%mm3\n" // lum1+Cr_g:x G3 x G1 x g3 x g1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
160 "paddsw %%mm0, %%mm7\n" // lum1+blue:x G2 x G0 x g2 x g0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
161 "packuswb %%mm3,%%mm3\n" // G3 G1 g3 g1 G3 G1 g3 g1
74212992fb08 Initial revision
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parents:
diff changeset
162 "packuswb %%mm7,%%mm7\n" // G2 G0 g2 g0 G2 G0 g2 g0
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parents:
diff changeset
163 "punpcklbw %%mm3,%%mm7\n" // G3 G2 G1 G0 g3 g2 g1 g0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164
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parents:
diff changeset
165 // create B (result in mm5)
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parents:
diff changeset
166 "movq %%mm2,%%mm3\n" // 0 L3 0 L1 0 l3 0 l1
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parents:
diff changeset
167 "movq %%mm4,%%mm5\n" // 0 L2 0 L0 0 l2 0 l1
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parents:
diff changeset
168 "paddsw %%mm1, %%mm3\n" // lum1+blue:x B3 x B1 x b3 x b1
74212992fb08 Initial revision
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parents:
diff changeset
169 "paddsw %%mm1, %%mm5\n" // lum1+blue:x B2 x B0 x b2 x b0
74212992fb08 Initial revision
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parents:
diff changeset
170 "packuswb %%mm3,%%mm3\n" // B3 B1 b3 b1 B3 B1 b3 b1
74212992fb08 Initial revision
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parents:
diff changeset
171 "packuswb %%mm5,%%mm5\n" // B2 B0 b2 b0 B2 B0 b2 b0
74212992fb08 Initial revision
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parents:
diff changeset
172 "punpcklbw %%mm3,%%mm5\n" // B3 B2 B1 B0 b3 b2 b1 b0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
173
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parents:
diff changeset
174 // fill destination row1 (needed are mm6=Rr,mm7=Gg,mm5=Bb)
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parents:
diff changeset
175
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
176 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
177 "pxor %%mm4,%%mm4\n" // 0 0 0 0 0 0 0 0
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parents:
diff changeset
178 "movq %%mm6,%%mm1\n" // R3 R2 R1 R0 r3 r2 r1 r0
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parents:
diff changeset
179 "movq %%mm5,%%mm3\n" // B3 B2 B1 B0 b3 b2 b1 b0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
180 // process lower lum
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parents:
diff changeset
181 "punpcklbw %%mm4,%%mm1\n" // 0 r3 0 r2 0 r1 0 r0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
182 "punpcklbw %%mm4,%%mm3\n" // 0 b3 0 b2 0 b1 0 b0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
183 "movq %%mm1,%%mm2\n" // 0 r3 0 r2 0 r1 0 r0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184 "movq %%mm3,%%mm0\n" // 0 b3 0 b2 0 b1 0 b0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 "punpcklwd %%mm1,%%mm3\n" // 0 r1 0 b1 0 r0 0 b0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186 "punpckhwd %%mm2,%%mm0\n" // 0 r3 0 b3 0 r2 0 b2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 "movq %%mm7,%%mm1\n" // G3 G2 G1 G0 g3 g2 g1 g0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 "punpcklbw %%mm1,%%mm2\n" // g3 0 g2 0 g1 0 g0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191 "punpcklwd %%mm4,%%mm2\n" // 0 0 g1 0 0 0 g0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 "por %%mm3, %%mm2\n" // 0 r1 g1 b1 0 r0 g0 b0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193 "movq %%mm2,(%3)\n" // wrote out ! row1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
194
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
195 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
196 "punpcklbw %%mm1,%%mm4\n" // g3 0 g2 0 g1 0 g0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
197 "punpckhwd %%mm2,%%mm4\n" // 0 0 g3 0 0 0 g2 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
198 "por %%mm0, %%mm4\n" // 0 r3 g3 b3 0 r2 g2 b2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
199 "movq %%mm4,8(%3)\n" // wrote out ! row1
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
200
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
201 // fill destination row2 (needed are mm6=Rr,mm7=Gg,mm5=Bb)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
202 // this can be done "destructive"
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203 "pxor %%mm2,%%mm2\n" // 0 0 0 0 0 0 0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
204 "punpckhbw %%mm2,%%mm6\n" // 0 R3 0 R2 0 R1 0 R0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
205 "punpckhbw %%mm1,%%mm5\n" // G3 B3 G2 B2 G1 B1 G0 B0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
206 "movq %%mm5,%%mm1\n" // G3 B3 G2 B2 G1 B1 G0 B0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
207 "punpcklwd %%mm6,%%mm1\n" // 0 R1 G1 B1 0 R0 G0 B0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 "movq %%mm1,(%5)\n" // wrote out ! row2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 "punpckhwd %%mm6,%%mm5\n" // 0 R3 G3 B3 0 R2 G2 B2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210 "movq %%mm5,8(%5)\n" // wrote out ! row2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 "addl $4,%2\n" // lum+4
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 "leal 16(%3),%3\n" // row1+16
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214 "leal 16(%5),%5\n" // row2+16
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 "addl $2, %%ebx\n" // cr+2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 "addl $2, %1\n" // cb+2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 "addl $4,%6\n" // x+4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 "cmpl %4,%6\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 "jl 1b\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 "addl %4, %2\n" // lum += cols
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 "addl %8, %3\n" // row1+= mod
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 "addl %8, %5\n" // row2+= mod
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 "movl $0, %6\n" // x=0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 "cmpl %7, %2\n"
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 "jl 1b\n"
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 "emms\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229 "popl %%ebx\n"
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 :
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 : "m" (cr), "r"(cb),"r"(lum),
1148
63fb2da89a4b Patched inline assembly to compile on gcc 4.0.1. Details are here:
Ryan C. Gordon <icculus@icculus.org>
parents: 1038
diff changeset
232 "r"(row1),"r"(cols),"r"(row2),"m"(x),"m"(y),"m"(mod));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 Uint16 *row1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241 Uint16 *row2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
243 unsigned char* y = lum +cols*rows; /* Pointer to the end */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 int x=0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 row1 = (Uint16 *)out; /* 16 bit target */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 row2 = (Uint16 *)out+cols+mod; /* start of second row */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
247 mod = (mod+cols+mod)*2; /* increment for row1 in byte */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
250 __asm__ __volatile__(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
251 "pushl %%ebx\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 "movl %0, %%ebx\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 ".align 8\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 "1:\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 "movd (%1), %%mm0\n" // 4 Cb 0 0 0 0 u3 u2 u1 u0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 "pxor %%mm7, %%mm7\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 "movd (%%ebx), %%mm1\n" // 4 Cr 0 0 0 0 v3 v2 v1 v0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
259 "punpcklbw %%mm7, %%mm0\n" // 4 W cb 0 u3 0 u2 0 u1 0 u0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
260 "punpcklbw %%mm7, %%mm1\n" // 4 W cr 0 v3 0 v2 0 v1 0 v0
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
261 "psubw _MMX_0080w, %%mm0\n"
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
262 "psubw _MMX_0080w, %%mm1\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 "movq %%mm0, %%mm2\n" // Cb 0 u3 0 u2 0 u1 0 u0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 "movq %%mm1, %%mm3\n" // Cr
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
265 "pmullw _MMX_Ugrn565, %%mm2\n" // Cb2green 0 R3 0 R2 0 R1 0 R0
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 "movq (%2), %%mm6\n" // L1 l7 L6 L5 L4 L3 L2 L1 L0
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
267 "pmullw _MMX_Ublu5x5, %%mm0\n" // Cb2blue
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
268 "pand _MMX_00FFw, %%mm6\n" // L1 00 L6 00 L4 00 L2 00 L0
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
269 "pmullw _MMX_Vgrn565, %%mm3\n" // Cr2green
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270 "movq (%2), %%mm7\n" // L2
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
271 "pmullw _MMX_Vred5x5, %%mm1\n" // Cr2red
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 "psrlw $8, %%mm7\n" // L2 00 L7 00 L5 00 L3 00 L1
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
273 "pmullw _MMX_Ycoeff, %%mm6\n" // lum1
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 "paddw %%mm3, %%mm2\n" // Cb2green + Cr2green == green
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
275 "pmullw _MMX_Ycoeff, %%mm7\n" // lum2
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 "movq %%mm6, %%mm4\n" // lum1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 "paddw %%mm0, %%mm6\n" // lum1 +blue 00 B6 00 B4 00 B2 00 B0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 "movq %%mm4, %%mm5\n" // lum1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 "paddw %%mm1, %%mm4\n" // lum1 +red 00 R6 00 R4 00 R2 00 R0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 "paddw %%mm2, %%mm5\n" // lum1 +green 00 G6 00 G4 00 G2 00 G0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 "psraw $6, %%mm4\n" // R1 0 .. 64
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 "movq %%mm7, %%mm3\n" // lum2 00 L7 00 L5 00 L3 00 L1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 "psraw $6, %%mm5\n" // G1 - .. +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 "paddw %%mm0, %%mm7\n" // Lum2 +blue 00 B7 00 B5 00 B3 00 B1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 "psraw $6, %%mm6\n" // B1 0 .. 64
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 "packuswb %%mm4, %%mm4\n" // R1 R1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 "packuswb %%mm5, %%mm5\n" // G1 G1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 "packuswb %%mm6, %%mm6\n" // B1 B1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 "punpcklbw %%mm4, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 "punpcklbw %%mm5, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
293 "pand _MMX_red565, %%mm4\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 "psllw $3, %%mm5\n" // GREEN 1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 "punpcklbw %%mm6, %%mm6\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
296 "pand _MMX_grn565, %%mm5\n"
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
297 "pand _MMX_red565, %%mm6\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 "por %%mm5, %%mm4\n" //
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 "psrlw $11, %%mm6\n" // BLUE 1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 "movq %%mm3, %%mm5\n" // lum2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 "paddw %%mm1, %%mm3\n" // lum2 +red 00 R7 00 R5 00 R3 00 R1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 "paddw %%mm2, %%mm5\n" // lum2 +green 00 G7 00 G5 00 G3 00 G1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 "psraw $6, %%mm3\n" // R2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 "por %%mm6, %%mm4\n" // MM4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 "psraw $6, %%mm5\n" // G2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 "movq (%2, %4), %%mm6\n" // L3 load lum2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 "psraw $6, %%mm7\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 "packuswb %%mm3, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 "packuswb %%mm5, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 "packuswb %%mm7, %%mm7\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
311 "pand _MMX_00FFw, %%mm6\n" // L3
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 "punpcklbw %%mm3, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 "punpcklbw %%mm5, %%mm5\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
314 "pmullw _MMX_Ycoeff, %%mm6\n" // lum3
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 "punpcklbw %%mm7, %%mm7\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 "psllw $3, %%mm5\n" // GREEN 2
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
317 "pand _MMX_red565, %%mm7\n"
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
318 "pand _MMX_red565, %%mm3\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 "psrlw $11, %%mm7\n" // BLUE 2
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
320 "pand _MMX_grn565, %%mm5\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 "por %%mm7, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 "movq (%2,%4), %%mm7\n" // L4 load lum2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 "por %%mm5, %%mm3\n" //
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 "psrlw $8, %%mm7\n" // L4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 "movq %%mm4, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 "punpcklwd %%mm3, %%mm4\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
327 "pmullw _MMX_Ycoeff, %%mm7\n" // lum4
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 "punpckhwd %%mm3, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 "movq %%mm4, (%3)\n" // write row1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 "movq %%mm5, 8(%3)\n" // write row1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 "movq %%mm6, %%mm4\n" // Lum3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 "paddw %%mm0, %%mm6\n" // Lum3 +blue
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 "movq %%mm4, %%mm5\n" // Lum3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 "paddw %%mm1, %%mm4\n" // Lum3 +red
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 "paddw %%mm2, %%mm5\n" // Lum3 +green
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 "psraw $6, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 "movq %%mm7, %%mm3\n" // Lum4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 "psraw $6, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 "paddw %%mm0, %%mm7\n" // Lum4 +blue
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 "psraw $6, %%mm6\n" // Lum3 +blue
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 "movq %%mm3, %%mm0\n" // Lum4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 "packuswb %%mm4, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 "paddw %%mm1, %%mm3\n" // Lum4 +red
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 "packuswb %%mm5, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 "paddw %%mm2, %%mm0\n" // Lum4 +green
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 "packuswb %%mm6, %%mm6\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 "punpcklbw %%mm4, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 "punpcklbw %%mm5, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 "punpcklbw %%mm6, %%mm6\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 "psllw $3, %%mm5\n" // GREEN 3
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
354 "pand _MMX_red565, %%mm4\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 "psraw $6, %%mm3\n" // psr 6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 "psraw $6, %%mm0\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
357 "pand _MMX_red565, %%mm6\n" // BLUE
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
358 "pand _MMX_grn565, %%mm5\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 "psrlw $11, %%mm6\n" // BLUE 3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 "por %%mm5, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 "psraw $6, %%mm7\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 "por %%mm6, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 "packuswb %%mm3, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 "packuswb %%mm0, %%mm0\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 "packuswb %%mm7, %%mm7\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 "punpcklbw %%mm3, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 "punpcklbw %%mm0, %%mm0\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 "punpcklbw %%mm7, %%mm7\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
369 "pand _MMX_red565, %%mm3\n"
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
370 "pand _MMX_red565, %%mm7\n" // BLUE
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 "psllw $3, %%mm0\n" // GREEN 4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 "psrlw $11, %%mm7\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
373 "pand _MMX_grn565, %%mm0\n"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 "por %%mm7, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 "por %%mm0, %%mm3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 "movq %%mm4, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 "punpcklwd %%mm3, %%mm4\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 "punpckhwd %%mm3, %%mm5\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 "movq %%mm4, (%5)\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 "movq %%mm5, 8(%5)\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 "addl $8, %6\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 "addl $8, %2\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 "addl $4, %%ebx\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 "addl $4, %1\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 "cmpl %4, %6\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 "leal 16(%3), %3\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 "leal 16(%5),%5\n" // row2+16
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 "jl 1b\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 "addl %4, %2\n" // lum += cols
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 "addl %8, %3\n" // row1+= mod
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 "addl %8, %5\n" // row2+= mod
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 "movl $0, %6\n" // x=0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 "cmpl %7, %2\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 "jl 1b\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 "emms\n"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 "popl %%ebx\n"
1038
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
403 :
29d7db09776e Ugly hack to make this work with gcc 2.x and 3.x
Sam Lantinga <slouken@libsdl.org>
parents: 949
diff changeset
404 :"m" (cr), "r"(cb),"r"(lum),
1148
63fb2da89a4b Patched inline assembly to compile on gcc 4.0.1. Details are here:
Ryan C. Gordon <icculus@icculus.org>
parents: 1038
diff changeset
405 "r"(row1),"r"(cols),"r"(row2),"m"(x),"m"(y),"m"(mod));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 #endif /* GCC i386 inline assembly */