2 * assembly optimized versions of most funtions from draw.c
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3 * (C) notaz, 2006-2010,2017
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5 * This work is licensed under the terms of MAME license.
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6 * See COPYING file in the top-level directory.
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8 * this is highly specialized, be careful if changing related C code!
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11 #include "pico_int_o32.h"
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13 .extern DrawStripInterlace
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15 .equ PDRAW_SPRITES_MOVED, (1<<0)
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16 .equ PDRAW_WND_DIFF_PRIO, (1<<1)
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17 .equ PDRAW_ACC_SPRITES, (1<<2)
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18 .equ PDRAW_DIRTY_SPRITES, (1<<4)
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19 .equ PDRAW_PLANE_HI_PRIO, (1<<6)
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20 .equ PDRAW_SHHI_DONE, (1<<7)
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23 .macro TilePixel pat lsrr offs
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27 ands r4, \pat, r2, lsr #\lsrr
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30 strneb r4, [r1,#\offs]
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33 @ TileNorm (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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35 TilePixel \pat, 12, 0 @ #0x0000f000
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36 TilePixel \pat, 8, 1 @ #0x00000f00
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37 TilePixel \pat, 4, 2 @ #0x000000f0
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38 TilePixel \pat, 0, 3 @ #0x0000000f
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39 TilePixel \pat, 28, 4 @ #0xf0000000
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40 TilePixel \pat, 24, 5 @ #0x0f000000
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41 TilePixel \pat, 20, 6 @ #0x00f00000
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42 TilePixel \pat, 16, 7 @ #0x000f0000
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45 @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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47 TilePixel \pat, 16, 0 @ #0x000f0000
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48 TilePixel \pat, 20, 1 @ #0x00f00000
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49 TilePixel \pat, 24, 2 @ #0x0f000000
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50 TilePixel \pat, 28, 3 @ #0xf0000000
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51 TilePixel \pat, 0, 4 @ #0x0000000f
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52 TilePixel \pat, 4, 5 @ #0x000000f0
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53 TilePixel \pat, 8, 6 @ #0x00000f00
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54 TilePixel \pat, 12, 7 @ #0x0000f000
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57 @ shadow/hilight mode
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59 @ this one is for hi priority layer
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60 .macro TilePixelShHP lsrr offs
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64 ands r4, r12, r2, lsr #\lsrr
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66 ldreqb r4, [r1,#\offs]
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69 strb r4, [r1,#\offs]
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72 @ TileNormShHP (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: register with helper pattern 0xf, touches r3 high bits
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74 TilePixelShHP 12, 0 @ #0x0000f000
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75 TilePixelShHP 8, 1 @ #0x00000f00
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76 TilePixelShHP 4, 2 @ #0x000000f0
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77 TilePixelShHP 0, 3 @ #0x0000000f
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78 TilePixelShHP 28, 4 @ #0xf0000000
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79 TilePixelShHP 24, 5 @ #0x0f000000
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80 TilePixelShHP 20, 6 @ #0x00f00000
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81 TilePixelShHP 16, 7 @ #0x000f0000
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84 @ TileFlipShHP (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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86 TilePixelShHP 16, 0 @ #0x000f0000
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87 TilePixelShHP 20, 1 @ #0x00f00000
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88 TilePixelShHP 24, 2 @ #0x0f000000
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89 TilePixelShHP 28, 3 @ #0xf0000000
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90 TilePixelShHP 0, 4 @ #0x0000000f
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91 TilePixelShHP 4, 5 @ #0x000000f0
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92 TilePixelShHP 8, 6 @ #0x00000f00
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93 TilePixelShHP 12, 7 @ #0x0000f000
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97 @ TileSingleSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx; r12: helper pattern 0xf
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99 tst r0, #1 @ not aligned?
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105 strneb r4, [r1], #1
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106 streqh r4, [r1], #2
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118 strneb r4, [r1], #1
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121 @ TileSingleHi (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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122 .macro TileSingleHi
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123 tst r1, #1 @ not aligned?
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126 ldrneb r4, [r1], #1
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127 ldreqh r4, [r1], #2 @ 1ci
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129 bic r4, r4, r7, lsr #1
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131 strneb r4, [r1, #-3]
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132 streqh r4, [r1, #-4]
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134 bic r12, r12, r7, lsr #1
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136 strh r12, [r1, #-4]
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138 bic r4, r4, r7, lsr #1
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142 bic r12, r12, r7, lsr #1
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144 strh r12, [r1, #-2]
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145 bicne r4, r4, r7, lsr #1
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147 strneb r4, [r1], #1
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151 .macro TileDoShGenPixel shift ofs
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153 ands r4, r12, r2, lsr #\shift
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159 ldrgeb r7, [r1,#\ofs]
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160 orrlt r7, r3, r4 @ normal
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162 bicge r7, r7, #0xc0
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163 orrge r7, r7, r4, lsl #6
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164 strb r7, [r1,#\ofs]
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168 @ TileFlipSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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170 TileDoShGenPixel 16, 0 @ #0x000f0000
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171 TileDoShGenPixel 20, 1 @ #0x00f00000
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172 TileDoShGenPixel 24, 2 @ #0x0f000000
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173 TileDoShGenPixel 28, 3 @ #0xf0000000
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174 TileDoShGenPixel 0, 4 @ #0x0000000f
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175 TileDoShGenPixel 4, 5 @ #0x000000f0
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176 TileDoShGenPixel 8, 6 @ #0x00000f00
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177 TileDoShGenPixel 12, 7 @ #0x0000f000
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180 @ TileNormSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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182 TileDoShGenPixel 12, 0 @ #0x0000f000
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183 TileDoShGenPixel 8, 1 @ #0x00000f00
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184 TileDoShGenPixel 4, 2 @ #0x000000f0
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185 TileDoShGenPixel 0, 3 @ #0x0000000f
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186 TileDoShGenPixel 28, 4 @ #0xf0000000
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187 TileDoShGenPixel 24, 5 @ #0x0f000000
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188 TileDoShGenPixel 20, 6 @ #0x00f00000
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189 TileDoShGenPixel 16, 7 @ #0x000f0000
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192 .macro TileDoShGenPixel_markop shift ofs
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194 ands r4, r12, r2, lsr #\shift
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200 ldrgeb r4, [r1,#\ofs]
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202 orrge r4, r4, #0x80
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203 strb r4, [r1,#\ofs]
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207 .macro TileFlipSh_markop
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208 TileDoShGenPixel_markop 16, 0 @ #0x000f0000
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209 TileDoShGenPixel_markop 20, 1 @ #0x00f00000
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210 TileDoShGenPixel_markop 24, 2 @ #0x0f000000
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211 TileDoShGenPixel_markop 28, 3 @ #0xf0000000
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212 TileDoShGenPixel_markop 0, 4 @ #0x0000000f
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213 TileDoShGenPixel_markop 4, 5 @ #0x000000f0
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214 TileDoShGenPixel_markop 8, 6 @ #0x00000f00
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215 TileDoShGenPixel_markop 12, 7 @ #0x0000f000
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218 .macro TileNormSh_markop
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219 TileDoShGenPixel_markop 12, 0 @ #0x0000f000
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220 TileDoShGenPixel_markop 8, 1 @ #0x00000f00
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221 TileDoShGenPixel_markop 4, 2 @ #0x000000f0
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222 TileDoShGenPixel_markop 0, 3 @ #0x0000000f
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223 TileDoShGenPixel_markop 28, 4 @ #0xf0000000
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224 TileDoShGenPixel_markop 24, 5 @ #0x0f000000
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225 TileDoShGenPixel_markop 20, 6 @ #0x00f00000
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226 TileDoShGenPixel_markop 16, 7 @ #0x000f0000
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229 .macro TileDoShGenPixel_onlyop_lp shift ofs
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231 ands r7, r12, r2, lsr #\shift
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235 ldrneb r4, [r1,#\ofs]
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240 bicne r4, r4, #0xc0
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241 orrne r4, r4, r7, lsl #6
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242 strneb r4, [r1,#\ofs]
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246 .macro TileFlipSh_onlyop_lp
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247 TileDoShGenPixel_onlyop_lp 16, 0 @ #0x000f0000
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248 TileDoShGenPixel_onlyop_lp 20, 1 @ #0x00f00000
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249 TileDoShGenPixel_onlyop_lp 24, 2 @ #0x0f000000
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250 TileDoShGenPixel_onlyop_lp 28, 3 @ #0xf0000000
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251 TileDoShGenPixel_onlyop_lp 0, 4 @ #0x0000000f
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252 TileDoShGenPixel_onlyop_lp 4, 5 @ #0x000000f0
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253 TileDoShGenPixel_onlyop_lp 8, 6 @ #0x00000f00
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254 TileDoShGenPixel_onlyop_lp 12, 7 @ #0x0000f000
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257 .macro TileNormSh_onlyop_lp
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258 TileDoShGenPixel_onlyop_lp 12, 0 @ #0x0000f000
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259 TileDoShGenPixel_onlyop_lp 8, 1 @ #0x00000f00
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260 TileDoShGenPixel_onlyop_lp 4, 2 @ #0x000000f0
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261 TileDoShGenPixel_onlyop_lp 0, 3 @ #0x0000000f
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262 TileDoShGenPixel_onlyop_lp 28, 4 @ #0xf0000000
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263 TileDoShGenPixel_onlyop_lp 24, 5 @ #0x0f000000
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264 TileDoShGenPixel_onlyop_lp 20, 6 @ #0x00f00000
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265 TileDoShGenPixel_onlyop_lp 16, 7 @ #0x000f0000
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269 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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273 @ int nametab; // 0x00
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274 @ int line; // 0x04
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275 @ int hscroll; // 0x08
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276 @ int xmask; // 0x0C
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277 @ int *hc; // 0x10 (pointer to cache buffer)
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278 @ int cells; // 0x14
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281 @ void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells,
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282 @ struct PicoEState *est)
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287 ldr r12, [sp] @ est
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288 stmfd sp!, {r4-r11,lr}
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290 ldr r11, [r12, #OFS_Pico_video]
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293 ldrb r7, [r11, #16] @ ??vv??hh
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295 mov r6, r1 @ hcache
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296 orr r9, r3, r0, lsl #30
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297 orr r9, r9, r2, lsl #8 @ r9=sh[31]|cellskip[15:8]|maxcells[7:0] (tmp)
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300 orr r1, r1, #0x00ff
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304 biclt r1, r1, #0xfc00
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305 biceq r1, r1, #0xfe00
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306 bicgt r1, r1, #0xff00 @ r1=ymask=(height<<8)|0xff; ...; // Y Mask in pixels
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310 subge r10, r10, #1 @ r10=shift[width] (5,6,6,7)
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312 ldr r2, [r12, #OFS_DrawScanline]
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313 ldr lr, [r12, #OFS_Pico_vram]
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317 ldreqb r12, [r11, #2]
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318 ldrneb r12, [r11, #4]
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321 mov r5, r8, lsl r10
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322 sub r5, r5, #1 @ r5=xmask
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324 moveq r12, r12, lsl #10
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325 movne r12, r12, lsl #13
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326 and r12, r12, #(7<<13) @ r12=(ts->nametab<<1) (halfword compliant)
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328 ldrh r8, [r11, #12]
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329 ldrb r7, [r11, #11]
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331 mov r4, r8, lsr #8 @ pvid->reg[13]
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332 mov r4, r4, lsl #10 @ htab=pvid->reg[13]<<9; (halfwords)
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334 addne r4, r4, r2, lsl #2 @ htab+=DrawScanline<<1; // Offset by line
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336 biceq r4, r4, #0x1f @ htab&=~0xf; // Offset by tile
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337 add r4, r4, r0, lsl #1 @ htab+=plane
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338 bic r4, r4, #0x00ff0000 @ just in case
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339 ldrh r3, [lr, r4] @ r3=hscroll
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342 bne .DrawStrip_vsscroll
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344 @ Get vertical scroll value:
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345 add r7, lr, #0x012000
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346 add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
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351 bne .DrawStrip_interlace
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354 movne r7, r7, lsr #16
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356 @ Find the line in the name table
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360 add r10, r10, #1 @ shift[width]++
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361 add r12, r12, r4, lsl r10 @ nametab+=(ts.line>>3)<<shift[width];
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363 @ ldmia r0, {r1,r2,r3,r5,r6,r9} @ r2=line, r3=ts->hscroll, r5=ts->xmask, r6=ts->hc, r9=ts->cells
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366 mov r10,r10, lsl #1 @ r10=ty=(ts->line&7)<<1;
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367 orr r10,r10, r9, lsl #24
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370 mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
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374 add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1
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378 orrne r10,r10, #1<<23 @ r10=(cells<<24|sh<<23|hi_not_empty<<22|had_output<<21|ty)
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379 movne r3, #0x40 @ default to shadowed pal on sh mode
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382 addne r10,r10, #0x01000000 @ we will loop cells+1 times if there is scroll
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384 and r9, r9, #0xff00
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385 add r8, r8, r9, lsr #8 @ tilex+=cellskip
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386 add r7, r7, r9, lsr #5 @ dx+=cellskip<<3;
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387 sub r10,r10,r9, lsl #16 @ cells-=cellskip
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389 @ cache some stuff to avoid mem access
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390 ldr r11,[sp, #9*4] @ est
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392 ldr r11,[r11, #OFS_HighCol]
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394 mvn r9, #0 @ r9=prevcode=-1
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395 add r1, r11, r7 @ r1=pdest
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398 @ r4 & r7 are scratch in this loop
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401 .dsloop: @ 40-41 times
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402 subs r10,r10, #0x01000000
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407 add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
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408 ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
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414 bne .DrawStrip_hiprio
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417 beq .DrawStrip_samecode @ we know stuff about this tile already
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419 mov r9, r7 @ remember code
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420 orr r10, r10, #1<<21 @ seen non hi-prio tile
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422 movs r2, r9, lsl #20 @ if (code&0x1000)
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424 add r2, r2, r10, lsl #17
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425 mov r2, r2, lsr #17
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426 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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428 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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431 and r3, r9, #0x6000
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432 add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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434 .DrawStrip_samecode:
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436 beq .dsloop @ tileline blank
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439 beq .DrawStrip_SingleColor @ tileline singlecolor
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442 bne .DrawStrip_TileFlip
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444 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
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445 .DrawStrip_TileNorm:
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449 .DrawStrip_TileFlip:
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453 .DrawStrip_SingleColor:
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456 orr r4, r4, r4, lsl #8
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457 tst r1, #1 @ not aligned?
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458 strneb r4, [r1], #1
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459 streqh r4, [r1], #2
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463 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
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466 .DrawStrip_hiprio_maybempt:
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468 beq .dsloop @ must've been empty, otherwise we wouldn't get here
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469 movs r2, r7, lsl #20 @ if (code&0x1000)
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471 add r2, r2, r10, lsl #17
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472 mov r2, r2, lsr #17
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473 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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474 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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475 mov r9, r7 @ remember code
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478 orr r10, r10, #1<<22
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481 tst r10, #0x00c00000
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482 beq .DrawStrip_hiprio_maybempt
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484 orr r7, r7, r0, lsl #16
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485 orr r7, r7, r10, lsl #25 @ (ty<<25)
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487 eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;
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488 str r7, [r6], #4 @ cache hi priority tile
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493 tst r10, #1<<21 @ seen non hi-prio tile
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494 ldr r1, [sp, #9*4] @ est
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496 ldreq r2, [r1, #OFS_rendstatus]
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497 str r0, [r6] @ terminate the cache list
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498 orreq r2, r2, #PDRAW_PLANE_HI_PRIO @ had a layer with all hi-prio tiles
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499 streq r2, [r1, #OFS_rendstatus]
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501 ldmfd sp!, {r4-r11,lr}
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504 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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506 .DrawStrip_vsscroll:
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508 mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
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509 bic r8, r8, #0x3fc00000
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510 orr r8, r8, r5, lsl #25 @ r8=(xmask[31:25]|had_output[24]|tilex[21:0])
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512 ldr r11, [sp, #9*4] @ est
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513 orr r5, r1, r10, lsl #24
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514 ldr r4, [r11, #OFS_DrawScanline]
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516 orr r5, r5, r4, lsl #16 @ r5=(shift_width[31:24]|scanline[23:16]|ymask[15:0])
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518 add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1
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520 mov r10,r9, lsl #16
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522 orrne r10,r10, #0x8000
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525 orr r10,r10, #0xff000000 @ will be adjusted on entering loop
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526 orrne r10,r10, #1<<23 @ r10=(cell[31:24]|sh[23]|hi_not_empty[22]|cells_max[21:16]|plane[15]|ty[14:0])
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527 movne r3, #0x40 @ default to shadowed pal on sh mode
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530 subne r10,r10, #0x01000000 @ have hscroll, start with negative cell
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532 and r9, r9, #0xff00
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533 add r8, r8, r9, lsr #8 @ tilex+=cellskip
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534 add r7, r7, r9, lsr #5 @ dx+=cellskip<<3;
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535 add r10,r10,r9, lsl #16 @ cell+=cellskip
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537 @ cache some stuff to avoid mem access
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538 ldr r11,[sp, #9*4] @ est
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540 ldr r11,[r11, #OFS_HighCol]
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542 mvn r9, #0 @ r9=prevcode=-1
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543 add r1, r11, r7 @ r1=pdest
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545 @ r4 & r7 are scratch in this loop
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548 .dsloop_vs: @ 40-41 times
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549 add r10,r10, #0x01000000
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550 and r4, r10, #0x003f0000
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551 cmp r4, r10, asr #8
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552 ble .dsloop_vs_exit
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554 @ calc offset and read tileline code to r7, also calc ty
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555 add r7, lr, #0x012000
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556 add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
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557 add r7, r7, r10,asr #23 @ vsram + ((cell&~1)<<1)
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559 tst r10,#0x8000 @ plane1?
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561 ldrh r7, [r7] @ r7=vscroll
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563 bic r10,r10,#0xff @ clear old ty
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564 and r4, r5, #0xff0000 @ scanline
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565 add r4, r4, r7, lsl #16 @ ... += vscroll
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566 and r4, r4, r5, lsl #16 @ ... &= ymask
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567 and r7, r4, #0x70000
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568 orr r10,r10,r7, lsr #15 @ new ty
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570 mov r4, r4, lsr #19
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571 mov r7, r5, lsr #24
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572 mov r4, r4, lsl r7 @ nametabadd
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574 and r7, r8, r8, lsr #25
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575 add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
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576 add r7, r7, r4, lsl #1
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577 ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
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583 bne .DrawStrip_vs_hiprio
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586 beq .DrawStrip_vs_samecode @ we know stuff about this tile already
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588 mov r9, r7 @ remember code
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589 orr r8, r8, #(1<<24)@ seen non hi-prio tile
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591 movs r2, r9, lsl #20 @ if (code&0x1000)
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593 add r2, r2, r10, lsl #17
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594 mov r2, r2, lsr #17
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595 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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597 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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600 and r3, r9, #0x6000
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601 add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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603 .DrawStrip_vs_samecode:
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605 beq .dsloop_vs @ tileline blank
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608 beq .DrawStrip_vs_SingleColor @ tileline singlecolor
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611 bne .DrawStrip_vs_TileFlip
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613 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
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614 .DrawStrip_vs_TileNorm:
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618 .DrawStrip_vs_TileFlip:
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622 .DrawStrip_vs_SingleColor:
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625 orr r4, r4, r4, lsl #8
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626 tst r1, #1 @ not aligned?
\r
627 strneb r4, [r1], #1
\r
628 streqh r4, [r1], #2
\r
632 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
\r
635 .DrawStrip_vs_hiprio:
\r
636 tst r10, #0x00c00000
\r
637 beq .DrawStrip_vs_hiprio_maybempt
\r
639 orr r7, r7, r0, lsl #16
\r
640 orr r7, r7, r10, lsl #25 @ (ty<<25)
\r
642 eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;
\r
643 str r7, [r6], #4 @ cache hi priority tile
\r
647 .DrawStrip_vs_hiprio_maybempt:
\r
649 beq .dsloop_vs @ must've been empty, otherwise we wouldn't get here
\r
650 movs r2, r7, lsl #20 @ if (code&0x1000)
\r
652 add r2, r2, r10, lsl #17
\r
653 mov r2, r2, lsr #17
\r
654 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
\r
655 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
656 mov r9, r7 @ remember code
\r
658 orrne r10, r10, #1<<22
\r
659 bne .DrawStrip_vs_hiprio
\r
663 tst r8, #(1<<24) @ seen non hi-prio tile
\r
664 ldr r1, [sp, #9*4] @ est
\r
666 ldreq r2, [r1, #OFS_rendstatus]
\r
667 str r0, [r6] @ terminate the cache list
\r
668 orreq r2, r2, #PDRAW_PLANE_HI_PRIO @ had a layer with all hi-prio tiles
\r
669 streq r2, [r1, #OFS_rendstatus]
\r
671 ldmfd sp!, {r4-r11,lr}
\r
675 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
677 @ interlace mode 2? Sonic 2?
\r
678 .DrawStrip_interlace:
\r
680 moveq r7, r7, lsl #21
\r
681 movne r7, r7, lsl #5
\r
683 @ Find the line in the name table
\r
684 add r2, r7, r2, lsl #22 @ r2=(vscroll+(DrawScanline<<1))<<21 (11 bits);
\r
685 orr r1, r1, #0x80000000
\r
686 and r2, r2, r1, ror #10 @ &((ymask<<1)|1)<<21;
\r
687 mov r2, r2, lsr #21
\r
689 mov r12, r12, lsr #1 @ halfwords
\r
690 add r0, r12, r4, lsl r10 @ nametab+=(ts.line>>4)<<shift[width];
\r
694 stmia sp, {r0,r2,r3,r5,r6,r9}
\r
697 bl DrawStripInterlace @ struct TileStrip *ts
\r
700 ldmfd sp!, {r4-r11,lr}
\r
705 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
707 @ void BackFill(int reg7, int sh, struct PicoEState *est)
\r
712 stmfd sp!, {r4-r9,lr}
\r
714 mov r0, r0, lsl #26
\r
715 ldr lr, [r2, #OFS_HighCol]
\r
716 mov r0, r0, lsr #26
\r
719 orr r0, r0, r1, lsl #6
\r
720 orr r0, r0, r0, lsl #8
\r
721 orr r0, r0, r0, lsl #16
\r
732 stmia lr!, {r0-r7} @ 10*8*4
\r
743 ldmfd sp!, {r4-r9,lr}
\r
747 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
749 @ void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est)
\r
751 .global DrawTilesFromCache
\r
753 DrawTilesFromCache:
\r
754 stmfd sp!, {r4-r9,r11,lr}
\r
756 @ cache some stuff to avoid mem access
\r
757 ldr r11,[r3, #OFS_HighCol]
\r
759 ldr lr, [r3, #OFS_Pico_vram]
\r
762 mvn r5, #0 @ r5=prevcode=-1
\r
764 orr r8, r8, r2, lsl #1
\r
765 bne .dtfc_check_rendflags
\r
769 ldr r6, [r0], #4 @ read code
\r
770 movs r1, r6, lsr #16 @ r1=dx;
\r
771 ldmeqfd sp!, {r4-r9,r11,pc} @ dx is never zero, this must be a terminator, return
\r
772 bic r4, r1, #0xfe00
\r
773 add r1, r11, r4 @ r1=pdest
\r
775 mov r7, r6, lsl #16
\r
776 cmp r5, r7, lsr #16
\r
777 beq .dtfc_samecode @ if (code==prevcode)
\r
779 mov r5, r7, lsr #16
\r
781 mov r2, r5, lsl #21
\r
782 mov r2, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4;
\r
783 add r2, r2, r6, lsr #25 @ addr+=ty
\r
785 and r3, r5, #0x6000
\r
786 mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
\r
788 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
791 rsbs r4, r4, r8, lsr #1
\r
801 beq .dtfc_SingleColor @ tileline singlecolor
\r
806 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
818 orr r4, r4, r4, lsl #8
\r
819 tst r1, #1 @ not aligned?
\r
820 strneb r4, [r1], #1
\r
821 streqh r4, [r1], #2
\r
825 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
\r
830 beq .dtfc_shadow_blank
\r
833 beq .dtfc_SingleColor @ tileline singlecolor
\r
836 bne .dtfc_TileFlipShHP
\r
838 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
839 .dtfc_TileNormShHP:
\r
843 .dtfc_TileFlipShHP:
\r
847 .dtfc_shadow_blank:
\r
852 strneb r4, [r1], #1
\r
854 orr r6, r6, r6, lsl #8
\r
870 add r4, r4, #7 @ 0-6
\r
874 mov r2, r2, ror #16
\r
875 tst r5, #0x0800 @ flipped?
\r
878 mov r2, r2, ror #16
\r
888 @ check if we have detected layer covered with hi-prio tiles:
\r
889 .dtfc_check_rendflags:
\r
890 ldr r2, [r9, #OFS_rendstatus]
\r
891 tst r2, #(PDRAW_PLANE_HI_PRIO|PDRAW_SHHI_DONE)
\r
893 bic r8, r8, #1 @ sh/hi mode off
\r
894 tst r2, #PDRAW_SHHI_DONE
\r
895 bne .dtfc_loop @ already processed
\r
896 orr r2, r2, #PDRAW_SHHI_DONE
\r
897 str r2, [r9, #OFS_rendstatus]
\r
902 orr r6, r6, r6, lsl #8
\r
903 orr r6, r6, r6, lsl #16
\r
905 ldmia r1, {r2,r4,r5,r7}
\r
911 stmia r1!,{r2,r4,r5,r7}
\r
912 bne .dtfc_loop_shprep
\r
914 mvn r5, #0 @ r5=prevcode=-1
\r
919 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
922 @ void DrawSpritesSHi(unsigned char *sprited, struct PicoEState *est)
\r
924 .global DrawSpritesSHi
\r
932 stmfd sp!, {r1,r4-r11,lr} @ +est
\r
933 strb r12,[r0,#2] @ set end marker
\r
934 add r10,r0, #3 @ r10=HighLnSpr end
\r
935 add r10,r10,r3 @ r10=HighLnSpr end
\r
937 ldr r11,[r1, #OFS_HighCol]
\r
939 ldr lr, [r1, #OFS_Pico_vram]
\r
944 ldrb r0, [r10,#-1]!
\r
946 ldr r1, [r7, #OFS_HighPreSpr]
\r
948 ldmeqfd sp!, {r1,r4-r11,pc} @ end of list
\r
950 add r0, r1, r0, lsl #3
\r
952 ldr r9, [r0, #4] @ sprite[1]
\r
953 mov r2, r9, asr #16 @ r2=sx
\r
955 mov r9, r9, lsl #16
\r
956 mov r3, r9, lsr #31 @ priority
\r
957 mov r9, r9, lsr #16
\r
958 @ orr r9, r9, r8, lsl #31 @ r9=code|sh[31] @@ sh is always on here now
\r
959 and r4, r9, #0x6000
\r
960 orr r9, r9, r4, lsl #16
\r
961 orr r9, r9, #0x90000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)
\r
962 cmp r12,r9, lsr #28 @ sh/hi with pal3?
\r
963 cmpne r3, #1 @ if not, is it hi prio?
\r
964 bne DrawSpriteSHi @ non-operator low sprite, already drawn
\r
966 ldr r3, [r0] @ sprite[0]
\r
967 mov r6, r3, lsr #28
\r
968 sub r6, r6, #1 @ r6=width-1 (inc later)
\r
969 mov r5, r3, lsr #24
\r
970 and r5, r5, #7 @ r5=height
\r
972 ldr r7, [r7, #OFS_DrawScanline]
\r
973 mov r0, r3, lsl #16 @ r4=sy<<16 (tmp)
\r
975 sub r7, r7, r0, asr #16 @ r7=row=DrawScanline-sy
\r
978 movne r0, r5, lsl #3
\r
980 subne r7, r0, r7 @ if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
982 add r8, r9, r7, lsr #3 @ tile+=row>>3; // Tile number increases going down
\r
984 mlane r8, r5, r6, r8 @ if (code&0x0800) { tile+=delta*(width-1);
\r
985 rsbne r5, r5, #0 @ delta=-delta; } // r5=delta now
\r
987 mov r8, r8, lsl #21
\r
988 mov r8, r8, lsr #17
\r
990 add r8, r8, r7, lsl #1 @ tile+=(row&7)<<1; // Tile address
\r
992 mov r5, r5, lsl #4 @ delta<<=4; // Delta of address
\r
993 mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);
\r
995 add r6, r6, #1 @ inc now
\r
996 adds r0, r2, #0 @ mov sx to r0 and set ZV flags
\r
997 b .dsprShi_loop_enter
\r
1000 subs r6, r6, #1 @ width--
\r
1002 adds r0, r0, #8 @ sx+=8
\r
1003 add r8, r8, r5 @ tile+=delta
\r
1005 .dsprShi_loop_enter:
\r
1006 ble .dsprShi_loop @ sx <= 0
\r
1010 mov r8, r8, lsl #17
\r
1011 mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address
\r
1013 ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1014 add r1, r11, r0 @ r1=pdest
\r
1018 cmp r12, r9, lsr #28
\r
1019 beq .dsprShi_shadow
\r
1021 cmp r2, r2, ror #4
\r
1022 beq .dsprShi_SingleColor @ tileline singlecolor
\r
1025 bne .dsprShi_TileFlip
\r
1027 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1029 .dsprShi_TileNorm:
\r
1033 .dsprShi_TileFlip:
\r
1037 .dsprShi_SingleColor:
\r
1040 orr r4, r4, r4, lsl #8
\r
1041 tst r0, #1 @ not aligned?
\r
1042 strneb r4, [r1], #1
\r
1043 streqh r4, [r1], #2
\r
1047 strneb r4, [r1], #1
\r
1052 beq .dsprShi_shadow_lowpri
\r
1054 cmp r2, r2, ror #4
\r
1055 beq .dsprShi_singlec_sh
\r
1058 bne .dsprShi_TileFlip_sh
\r
1060 @ (r1=pdest, r2=pixels8, r3=pal) r4, r7: scratch, r12: helper pattern
\r
1061 .dsprShi_TileNorm_sh:
\r
1065 .dsprShi_TileFlip_sh:
\r
1069 .dsprShi_singlec_sh:
\r
1070 cmp r2, #0xe0000000
\r
1071 bcc .dsprShi_SingleColor @ normal singlecolor tileline (carry inverted in ARM)
\r
1072 tst r2, #0x10000000
\r
1073 bne .dsprShi_sh_sh
\r
1081 .dsprShi_shadow_lowpri:
\r
1083 bne .dsprShi_TileFlip_sh_lp
\r
1085 .dsprShi_TileNorm_sh_lp:
\r
1086 TileNormSh_onlyop_lp
\r
1089 .dsprShi_TileFlip_sh_lp:
\r
1090 TileFlipSh_onlyop_lp
\r
1095 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1097 @ void DrawAllSprites(unsigned char *sprited, int prio, int sh,
\r
1098 @ struct PicoEState *est)
\r
1100 .global DrawAllSprites
\r
1103 orr r1, r2, r1, lsl #1
\r
1104 ldr r12,[r3, #OFS_rendstatus]
\r
1105 tst r12,#(PDRAW_DIRTY_SPRITES|PDRAW_SPRITES_MOVED)
\r
1107 stmfd sp!, {r0,r1,r3,lr}
\r
1108 and r0, r12,#PDRAW_DIRTY_SPRITES
\r
1109 bic r12,r12,#(PDRAW_DIRTY_SPRITES|PDRAW_SPRITES_MOVED)
\r
1110 str r12,[r3, #OFS_rendstatus]
\r
1112 ldmfd sp!, {r0,r1,r3,lr}
\r
1116 ands r2, r2, #0x7f
\r
1119 @ time to do some real work
\r
1120 stmfd sp!, {r1,r3-r11,lr} @ +sh|prio<<1 +est
\r
1122 strb r12,[r0,#2] @ set end marker
\r
1124 add r10,r10,r2 @ r10=HighLnSpr end
\r
1126 ldr r11,[r3, #OFS_HighCol]
\r
1128 ldr lr, [r3, #OFS_Pico_vram]
\r
1130 @ + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: horiz. size
\r
1131 @ + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
1134 @ draw next sprite
\r
1135 ldrb r0, [r10,#-1]!
\r
1136 ldr r8, [sp] @ sh|prio<<1
\r
1137 ldr r7, [sp, #4] @ est
\r
1138 mov r2, r0, lsr #7
\r
1140 ldmeqfd sp!, {r1,r3-r11,pc} @ end of list
\r
1141 cmp r2, r8, lsr #1
\r
1142 bne DrawSprite @ wrong priority
\r
1143 ldr r1, [r7, #OFS_HighPreSpr]
\r
1145 add r0, r1, r0, lsl #3
\r
1147 ldr r3, [r0] @ sprite[0]
\r
1148 ldr r7, [r7, #OFS_DrawScanline]
\r
1149 mov r6, r3, lsr #28
\r
1150 sub r6, r6, #1 @ r6=width-1 (inc later)
\r
1151 mov r5, r3, lsr #24
\r
1152 and r5, r5, #7 @ r5=height
\r
1154 mov r4, r3, lsl #16 @ r4=sy<<16 (tmp)
\r
1157 sub r7, r7, r4, asr #16 @ r7=row=DrawScanline-sy
\r
1159 mov r2, r9, asr #16 @ r2=sx
\r
1160 mov r9, r9, lsl #16
\r
1161 mov r9, r9, lsr #16
\r
1162 orr r9, r9, r8, lsl #31 @ r9=code|sh[31]
\r
1165 movne r4, r5, lsl #3
\r
1167 subne r7, r4, r7 @ if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
1169 add r8, r9, r7, lsr #3 @ tile+=row>>3; // Tile number increases going down
\r
1171 mlane r8, r5, r6, r8 @ if (code&0x0800) { tile+=delta*(width-1);
\r
1172 rsbne r5, r5, #0 @ delta=-delta; } // r5=delta now
\r
1174 mov r8, r8, lsl #21
\r
1175 mov r8, r8, lsr #17
\r
1177 add r8, r8, r7, lsl #1 @ tile+=(row&7)<<1; // Tile address
\r
1180 @ cache some stuff to avoid mem access
\r
1181 mov r5, r5, lsl #4 @ delta<<=4; // Delta of address
\r
1182 and r4, r9, #0x6000
\r
1183 orr r9, r9, r4, lsl #16
\r
1184 orrs r9, r9, #0x10000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)
\r
1186 mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);
\r
1187 orrmi r3, r3, #0x40 @ for sh/hi
\r
1189 add r6, r6, #1 @ inc now
\r
1190 adds r0, r2, #0 @ mov sx to r0 and set ZV flags
\r
1191 b .dspr_loop_enter
\r
1194 subs r6, r6, #1 @ width--
\r
1196 adds r0, r0, #8 @ sx+=8
\r
1197 add r8, r8, r5 @ tile+=delta
\r
1200 ble .dspr_loop @ sx <= 0
\r
1204 mov r8, r8, lsl #17
\r
1205 mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address
\r
1207 ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1208 add r1, r11, r0 @ r1=pdest
\r
1212 cmp r12, r9, lsr #28
\r
1215 cmp r2, r2, ror #4
\r
1216 beq .dspr_SingleColor @ tileline singlecolor
\r
1219 bne .dspr_TileFlip
\r
1221 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1232 cmp r2, #0xe0000000
\r
1233 bcs .dspr_TileNorm_sh @ op. tileline, markop. XXX: maybe add a spec. handler?
\r
1235 .dspr_SingleColor:
\r
1238 orr r4, r4, r4, lsl #8
\r
1239 tst r0, #1 @ not aligned?
\r
1240 strneb r4, [r1], #1
\r
1241 streqh r4, [r1], #2
\r
1245 strneb r4, [r1], #1
\r
1249 cmp r2, r2, ror #4
\r
1250 beq .dspr_singlec_sh
\r
1253 bne .dspr_TileFlip_sh
\r
1255 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1256 .dspr_TileNorm_sh:
\r
1260 .dspr_TileFlip_sh:
\r
1265 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1267 @ void DrawWindow(int tstart, int tend, int prio, int sh
\r
1268 @ struct PicoEState *est)
\r
1270 .global DrawWindow
\r
1273 ldr r12, [sp] @ est
\r
1274 stmfd sp!, {r4-r11,lr}
\r
1276 ldr r6, [r12, #OFS_Pico_video]
\r
1277 ldr r10, [r12, #OFS_DrawScanline]
\r
1278 mov r11, r12 @ est
\r
1279 ldrb r12, [r6, #3] @ pvid->reg[3]
\r
1282 mov r5, r10, lsr #3
\r
1284 mov r10, r10, lsl #1 @ r10=ty
\r
1286 mov r12, r12, lsl #10
\r
1288 tst r4, #1 @ 40 cell mode?
\r
1289 andne r12, r12, #0xf000 @ 0x3c<<10
\r
1290 andeq r12, r12, #0xf800
\r
1291 addne r12, r12, r5, lsl #7
\r
1292 addeq r12, r12, r5, lsl #6 @ nametab
\r
1293 add r12, r12, r0, lsl #2 @ +starttile
\r
1295 ldr lr, [r11, #OFS_Pico_vram]
\r
1296 ldr r6, [r11, #OFS_rendstatus]
\r
1298 @ fetch the first code now
\r
1299 ldrh r7, [lr, r12]
\r
1301 ands r6, r6, #PDRAW_WND_DIFF_PRIO
\r
1304 eoreq r8, r2, r7, lsr #15 @ do prio bits differ?
\r
1306 ldmeqfd sp!, {r4-r11,pc} @ yes, assume that whole window uses same priority
\r
1308 orr r6, r6, r3, lsl #8 @ shadow mode
\r
1312 @ cache some stuff to avoid mem access
\r
1313 ldr r11, [r11, #OFS_HighCol]
\r
1314 mov r8, r8, lsl #1 @ cells
\r
1316 mvn r9, #0 @ r9=prevcode=-1
\r
1317 add r1, r11, r0, lsl #4 @ r1=pdest
\r
1321 @ r4,r5 are scratch in this loop
\r
1325 add r12, r12, #2 @ halfwords
\r
1326 ldrh r7, [lr, r12] @ r7=code (int, but from unsigned, no sign extend)
\r
1328 beq .dwloop_end @ done
\r
1330 eor r5, r6, r7, lsr #15
\r
1332 orrne r6, r6, #2 @ wrong pri
\r
1336 beq .dw_samecode @ we know stuff about this tile already
\r
1339 mov r9, r7 @ remember code
\r
1341 movs r2, r9, lsl #20 @ if (code&0x1000)
\r
1342 mov r2, r2, lsl #1
\r
1343 add r2, r10, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4; addr+=ty
\r
1344 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
\r
1346 and r3, r9, #0x6000
\r
1347 mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
\r
1349 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1356 beq .dwloop @ tileline blank
\r
1358 cmp r2, r2, ror #4
\r
1359 beq .dw_SingleColor @ tileline singlecolor
\r
1364 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
\r
1374 and r4, r0, r2 @ #0x0000000f
\r
1376 orr r4, r4, r4, lsl #8
\r
1377 orr r4, r4, r4, lsl #16
\r
1379 stmia r1!, {r4,r5}
\r
1380 b .dwloop_nor1 @ we incremeted r1 ourselves
\r
1383 tst r6, #1 @ hi pri?
\r
1384 orreq r3, r3, #0x40
\r
1385 beq .dw_shadow_done
\r
1388 orr r5, r5, r5, lsl #8
\r
1389 orr r5, r5, r5, lsl #16
\r
1398 and r2, r6, #PDRAW_WND_DIFF_PRIO
\r
1399 ldmfd sp!, {r4-r11,lr}
\r
1401 ldr r1, [r0, #OFS_rendstatus]
\r
1403 str r1, [r0, #OFS_rendstatus]
\r
1408 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1411 @ hilights 2 pixels in RGB444/BGR444 format
\r
1412 .macro TileDoShHi2Pixels444 reg
\r
1413 mov \reg, \reg, ror #12
\r
1414 adds \reg, \reg, #0x40000000
\r
1415 orrcs \reg, \reg, #0xf0000000
\r
1416 mov \reg, \reg, ror #28
\r
1417 adds \reg, \reg, #0x40000000
\r
1418 orrcs \reg, \reg, #0xf0000000
\r
1419 mov \reg, \reg, ror #28
\r
1420 adds \reg, \reg, #0x40000000
\r
1421 orrcs \reg, \reg, #0xf0000000
\r
1422 mov \reg, \reg, ror #24
\r
1423 adds \reg, \reg, #0x40000000
\r
1424 orrcs \reg, \reg, #0xf0000000
\r
1425 mov \reg, \reg, ror #28
\r
1426 adds \reg, \reg, #0x40000000
\r
1427 orrcs \reg, \reg, #0xf0000000
\r
1428 mov \reg, \reg, ror #28
\r
1429 adds \reg, \reg, #0x40000000
\r
1430 orrcs \reg, \reg, #0xf0000000
\r
1431 mov \reg, \reg, ror #12
\r
1435 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1438 @ Convert 0000bbb0 ggg0rrr0
\r
1439 @ to rrrrrggg gggbbbbb
\r
1441 @ r2,r3 - scratch, lr = 0x001c001c, r8 = 0x08610861
\r
1442 .macro convRGB565 reg
\r
1443 and r2, lr, \reg,lsr #7 @ b
\r
1444 and r3, lr, \reg,lsr #3 @ g
\r
1445 and \reg, lr, \reg,lsl #1 @ r
\r
1446 orr r2, r2, r3, lsl #6
\r
1447 orr \reg, r2, \reg,lsl #11
\r
1449 and r2, r8, \reg,lsr #4
\r
1450 orr \reg, \reg, r2
\r
1453 @ trashes: r2-r8,r12,lr; r8 = 0x08610861; r0,r1 are advanced
\r
1454 .macro vidConvCpyRGB565_local
\r
1455 mov r12, r2, lsr #3 @ repeats
\r
1456 mov lr, #0x001c0000
\r
1457 orr lr, lr, #0x01c @ lr == pattern 0x001c001c
\r
1460 ldmia r1!, {r4-r7}
\r
1475 .global vidConvCpyRGB565
\r
1477 vidConvCpyRGB565: @ void *to, void *from, int pixels
\r
1478 stmfd sp!, {r4-r9,lr}
\r
1480 orr r8, r8, #0x0800
\r
1481 orr r8, r8, r8, lsl #16
\r
1482 vidConvCpyRGB565_local
\r
1483 ldmfd sp!, {r4-r9,lr}
\r
1487 @ void PicoDoHighPal555(int sh, int line, struct PicoEState *est)
\r
1489 .global PicoDoHighPal555
\r
1492 stmfd sp!, {r4-r10,lr}
\r
1495 ldr r8, [r10, #OFS_Pico_video]
\r
1497 PicoDoHighPal555_nopush:
\r
1498 orr r9, r1, r0, lsl #31 @ 0:called from FinalizeLine555, 31: s/h
\r
1503 strb r1, [r8, #-0x1a] @ 0x2220e ~ dirtyPal
\r
1505 sub r1, r8, #0x128 @ r1=Pico.cram
\r
1508 orr r8, r8, #0x0800
\r
1509 orr r8, r8, r8, lsl #16
\r
1511 vidConvCpyRGB565_local
\r
1514 beq PicoDoHighPal555_end
\r
1518 @ shadowed pixels:
\r
1520 add r4, r3, #0x40*2
\r
1521 orr r12,r12,#0x7300
\r
1522 add r5, r3, #0xc0*2
\r
1523 orr r12,r12,r12,lsl #16
\r
1525 .fl_loopcpRGB555_sh:
\r
1526 ldmia r3!, {r1,r6}
\r
1528 and r1, r12, r1, lsr #1
\r
1529 and r6, r12, r6, lsr #1
\r
1530 stmia r4!, {r1,r6}
\r
1531 stmia r5!, {r1,r6}
\r
1532 bne .fl_loopcpRGB555_sh
\r
1534 @ hilighted pixels:
\r
1535 @ t = ((dpal[i] >> 1) & 0x738e738e) + 0x738e738e;
\r
1536 @ t |= (t >> 4) & 0x08610861;
\r
1538 sub r3, r3, #0x40*2
\r
1540 .fl_loopcpRGB555_hi:
\r
1541 ldmia r3!, {r1,r6}
\r
1542 and r1, r12, r1, lsr #1
\r
1543 and r6, r12, r6, lsr #1
\r
1546 and r5, r8, r1, lsr #4
\r
1547 and r7, r8, r6, lsr #4
\r
1550 stmia r4!, {r1,r6}
\r
1552 bne .fl_loopcpRGB555_hi
\r
1555 PicoDoHighPal555_end:
\r
1557 ldmeqfd sp!, {r4-r10,pc}
\r
1559 ldr r8, [r10, #OFS_Pico_video]
\r
1560 b FinalizeLineRGB555_pal_done
\r
1563 @ void FinalizeLine555(int sh, int line, struct PicoEState *est)
\r
1565 .global FinalizeLine555
\r
1568 stmfd sp!, {r4-r10,lr}
\r
1570 ldr r8, [r10, #OFS_Pico_video]
\r
1572 ldrb r2, [r8, #-0x1a] @ 0x2220e ~ dirtyPal
\r
1575 bne PicoDoHighPal555_nopush
\r
1577 FinalizeLineRGB555_pal_done:
\r
1580 ldr r12, [r10, #OFS_rendstatus]
\r
1581 eors r0, r0, #1 @ sh is 0
\r
1583 tstne r12,#PDRAW_ACC_SPRITES
\r
1586 ldr r1, [r10, #OFS_HighCol]
\r
1587 ldr r0, [r10, #OFS_DrawLineDest]
\r
1590 ldrb r12, [r8, #12]
\r
1591 mov lr, lr, lsl #1
\r
1594 movne r2, #320/8 @ len
\r
1595 bne .fl_no32colRGB555
\r
1596 ldr r4, [r10, #OFS_PicoOpt]
\r
1600 bne .fl_32scale_RGB555
\r
1602 addeq r0, r0, #32*2
\r
1604 .fl_no32colRGB555:
\r
1606 #ifdef UNALIGNED_DRAWLINEDEST
\r
1607 @ this is basically for Gizmondo, which has unaligned odd lines in the framebuffer
\r
1616 and r4, lr, r12, lsl #1
\r
1618 and r5, lr, r12, lsr #7
\r
1620 and r6, lr, r12, lsr #15
\r
1622 orr r4, r4, r5, lsl #16
\r
1624 and r5, lr, r12, lsr #23
\r
1626 and r8, lr, r7, lsl #1
\r
1628 orr r5, r6, r5, lsl #16
\r
1630 and r6, lr, r7, lsr #7
\r
1632 and r12,lr, r7, lsr #15
\r
1633 ldrh r12,[r3, r12]
\r
1634 and r7, lr, r7, lsr #23
\r
1636 orr r8, r8, r6, lsl #16
\r
1639 orr r12,r12, r7, lsl #16
\r
1641 stmia r0!, {r4,r5,r8,r12}
\r
1642 bne .fl_loopRGB555
\r
1644 ldmfd sp!, {r4-r10,lr}
\r
1648 .fl_32scale_RGB555:
\r
1649 mov r9, #0x3900 @ f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
\r
1650 orr r9, r9, #0x00e7
\r
1652 #ifdef UNALIGNED_DRAWLINEDEST
\r
1654 bne .fl_32scale_RGB555u
\r
1657 .fl_loop32scale_RGB555:
\r
1661 and r4, lr, r12,lsl #1
\r
1663 and r5, lr, r12,lsr #7
\r
1665 and r4, r4, r9, lsl #2
\r
1666 orr r4, r4, r4, lsl #14 @ r4[31:16] = 1/4 pix_s 0
\r
1667 and r5, r5, r9, lsl #2
\r
1668 sub r6, r5, r5, lsr #2 @ r6 = 3/4 pix_s 1
\r
1669 add r4, r4, r6, lsl #16 @ pix_d 0, 1
\r
1670 and r6, lr, r12,lsr #15
\r
1672 and r12,lr, r12,lsr #23
\r
1673 ldrh r12,[r3, r12]
\r
1674 and r6, r6, r9, lsl #2
\r
1676 mov r5, r5, lsr #1
\r
1677 sub r6, r6, r6, lsr #2 @ r6 = 3/4 pix_s 2
\r
1678 orr r5, r5, r6, lsl #16
\r
1680 and r6, lr, r7, lsl #1
\r
1682 and r12,r12,r9, lsl #2
\r
1683 add r5, r5, r12,lsl #14 @ pix_d 2, 3
\r
1684 and r6, r6, r9, lsl #2
\r
1685 orr r6, r12,r6, lsl #16 @ pix_d 4, 5
\r
1687 and r12,lr, r7, lsr #7
\r
1688 ldrh r12,[r3, r12]
\r
1689 and r10,lr, r7, lsr #15
\r
1690 ldrh r10,[r3, r10]
\r
1691 and r12,r12,r9, lsl #2
\r
1692 sub r8, r12,r12,lsr #2 @ r8 = 3/4 pix_s 1
\r
1693 add r8, r8, r6, lsr #18
\r
1694 and r7, lr, r7, lsr #23
\r
1696 and r10,r10,r9, lsl #2
\r
1697 orr r8, r8, r10,lsl #15
\r
1698 add r8, r8, r12,lsl #15 @ pix_d 6, 7
\r
1699 sub r10,r10,r10,lsr #2 @ r10= 3/4 pix_s 2
\r
1700 and r7, r7, r9, lsl #2
\r
1701 add r10,r10,r7, lsr #2 @ += 1/4 pix_s 3
\r
1702 orr r10,r10,r7, lsl #16 @ pix_d 8, 9
\r
1706 stmia r0!, {r4,r5,r6,r8,r10}
\r
1707 bne .fl_loop32scale_RGB555
\r
1709 ldmfd sp!, {r4-r10,lr}
\r
1712 #ifdef UNALIGNED_DRAWLINEDEST
\r
1713 @ unaligned versions of loops
\r
1714 @ warning: starts drawing 2bytes before dst
\r
1717 sub r0, r0, #2 @ initial adjustment
\r
1724 and r6, lr, r12,lsl #1
\r
1726 and r5, lr, r12,lsr #7
\r
1728 orr r4, r8, r6, lsl #16
\r
1730 and r6, lr, r12,lsr #15
\r
1732 and r8, lr, r12,lsr #23
\r
1734 orr r5, r5, r6, lsl #16
\r
1736 and r6, lr, r7, lsl #1
\r
1738 and r12,lr, r7, lsr #7
\r
1739 ldrh r12,[r3, r12]
\r
1740 orr r6, r8, r6, lsl #16
\r
1742 and r8, lr, r7, lsr #15
\r
1744 and r7, lr, r7, lsr #23
\r
1747 orr r12,r12,r8, lsl #16
\r
1750 stmia r0!, {r4,r5,r6,r12}
\r
1751 bne .fl_loopRGB555u
\r
1755 ldmfd sp!, {r4-r10,lr}
\r
1759 .fl_32scale_RGB555u:
\r
1760 sub r0, r0, #2 @ initial adjustment
\r
1763 @ r9 f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
\r
1764 .fl_loop32scale_RGB555u:
\r
1768 and r6, lr, r12,lsl #1
\r
1770 and r5, lr, r12,lsr #7
\r
1772 and r6, r6, r9, lsl #2
\r
1773 orr r4, r4, r6, lsl #16 @ r4 = pix_d -1, 0
\r
1775 and r5, r5, r9, lsl #2
\r
1776 sub r8, r5, r5, lsr #2 @ r8 = 3/4 pix_s 1
\r
1777 add r6, r8, r6, lsr #2 @ r6 = (1/4 pix_s 0) + (3/4 pix_s 1)
\r
1778 orr r5, r6, r5, lsl #15
\r
1780 and r6, lr, r12,lsr #15
\r
1782 and r12,lr, r12,lsr #23
\r
1783 ldrh r12,[r3, r12]
\r
1784 and r6, r6, r9, lsl #2
\r
1785 add r5, r5, r6, lsl #15 @ r5 = pix_d 1, 2
\r
1787 and r8, lr, r7, lsl #1
\r
1789 and r10,lr, r7, lsr #7
\r
1790 ldrh r10,[r3, r10]
\r
1791 and r12,r12,r9, lsl #2
\r
1792 sub r6, r6, r6, lsr #2 @ r6 = 3/4 pix_s 2
\r
1793 add r6, r6, r12,lsr #2
\r
1794 orr r6, r6, r12,lsl #16 @ r6 = pix_d 3, 4
\r
1796 and r8, r8, r9, lsl #2
\r
1797 and r10,r10,r9, lsl #2
\r
1798 sub r12,r10,r10,lsr #2 @ r12 = 3/4 pix_s 5
\r
1799 orr r8, r8, r8, lsl #14
\r
1800 add r8, r8, r12,lsl #16 @ r8 = pix_d 5, 6
\r
1801 and r12,lr, r7, lsr #15
\r
1802 ldrh r12,[r3, r12]
\r
1803 and r7, lr, r7, lsr #23
\r
1805 and r12,r12,r9, lsl #2
\r
1807 mov r10,r10, lsr #1
\r
1808 sub r12,r12,r12,lsr #2 @ r12 = 3/4 pix_s 6
\r
1809 orr r10,r10,r12,lsl #16
\r
1810 and r7, r7, r9, lsl #2
\r
1811 add r10,r10,r7, lsl #14 @ r10 = pix_d 7, 8
\r
1815 stmia r0!, {r4,r5,r6,r8,r10}
\r
1817 bne .fl_loop32scale_RGB555u
\r
1821 ldmfd sp!, {r4-r10,lr}
\r
1824 #endif /* UNALIGNED_DRAWLINEDEST */
\r
1827 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1830 .global blockcpy @ void *dst, void *src, size_t n
\r
1833 stmfd sp!, {r4,r5}
\r
1834 mov r2, r2, lsr #4
\r
1836 ldmia r1!, {r3-r5,r12}
\r
1838 stmia r0!, {r3-r5,r12}
\r
1840 ldmfd sp!, {r4,r5}
\r
1844 .global blockcpy_or @ void *dst, void *src, size_t n, int pat
\r
1847 stmfd sp!, {r4-r6}
\r
1848 orr r3, r3, r3, lsl #8
\r
1849 orr r3, r3, r3, lsl #16
\r
1850 mov r2, r2, lsr #4
\r
1852 ldmia r1!, {r4-r6,r12}
\r
1858 stmia r0!, {r4-r6,r12}
\r
1859 bne blockcpy_loop_or
\r
1860 ldmfd sp!, {r4-r6}
\r
1863 @ vim:filetype=armasm
\r