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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17 .extern DrawLineDest
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18 .extern DrawStripInterlace
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19 .extern HighCacheS_ptr
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21 .equiv OVERRIDE_HIGHCOL, 1
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23 .equ PDRAW_SPRITES_MOVED, (1<<0)
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24 .equ PDRAW_WND_DIFF_PRIO, (1<<1)
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25 .equ PDRAW_ACC_SPRITES, (1<<2)
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26 .equ PDRAW_DIRTY_SPRITES, (1<<4)
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27 .equ PDRAW_PLANE_HI_PRIO, (1<<6)
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28 .equ PDRAW_SHHI_DONE, (1<<7)
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31 .macro TilePixel pat lsrr offs
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35 ands r4, \pat, r2, lsr #\lsrr
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38 strneb r4, [r1,#\offs]
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41 @ TileNorm (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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43 TilePixel \pat, 12, 0 @ #0x0000f000
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44 TilePixel \pat, 8, 1 @ #0x00000f00
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45 TilePixel \pat, 4, 2 @ #0x000000f0
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46 TilePixel \pat, 0, 3 @ #0x0000000f
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47 TilePixel \pat, 28, 4 @ #0xf0000000
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48 TilePixel \pat, 24, 5 @ #0x0f000000
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49 TilePixel \pat, 20, 6 @ #0x00f00000
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50 TilePixel \pat, 16, 7 @ #0x000f0000
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53 @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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55 TilePixel \pat, 16, 0 @ #0x000f0000
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56 TilePixel \pat, 20, 1 @ #0x00f00000
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57 TilePixel \pat, 24, 2 @ #0x0f000000
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58 TilePixel \pat, 28, 3 @ #0xf0000000
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59 TilePixel \pat, 0, 4 @ #0x0000000f
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60 TilePixel \pat, 4, 5 @ #0x000000f0
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61 TilePixel \pat, 8, 6 @ #0x00000f00
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62 TilePixel \pat, 12, 7 @ #0x0000f000
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65 @ shadow/hilight mode
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67 @ this one is for hi priority layer
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68 .macro TilePixelShHP lsrr offs
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72 ands r4, r12, r2, lsr #\lsrr
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74 ldreqb r4, [r1,#\offs]
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77 strb r4, [r1,#\offs]
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80 @ TileNormShHP (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: register with helper pattern 0xf, touches r3 high bits
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82 TilePixelShHP 12, 0 @ #0x0000f000
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83 TilePixelShHP 8, 1 @ #0x00000f00
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84 TilePixelShHP 4, 2 @ #0x000000f0
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85 TilePixelShHP 0, 3 @ #0x0000000f
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86 TilePixelShHP 28, 4 @ #0xf0000000
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87 TilePixelShHP 24, 5 @ #0x0f000000
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88 TilePixelShHP 20, 6 @ #0x00f00000
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89 TilePixelShHP 16, 7 @ #0x000f0000
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92 @ TileFlipShHP (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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94 TilePixelShHP 16, 0 @ #0x000f0000
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95 TilePixelShHP 20, 1 @ #0x00f00000
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96 TilePixelShHP 24, 2 @ #0x0f000000
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97 TilePixelShHP 28, 3 @ #0xf0000000
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98 TilePixelShHP 0, 4 @ #0x0000000f
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99 TilePixelShHP 4, 5 @ #0x000000f0
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100 TilePixelShHP 8, 6 @ #0x00000f00
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101 TilePixelShHP 12, 7 @ #0x0000f000
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105 @ TileSingleSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx; r12: helper pattern 0xf
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106 .macro TileSingleSh
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107 tst r0, #1 @ not aligned?
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113 strneb r4, [r1], #1
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114 streqh r4, [r1], #2
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126 strneb r4, [r1], #1
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129 @ TileSingleHi (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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130 .macro TileSingleHi
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131 tst r1, #1 @ not aligned?
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134 ldrneb r4, [r1], #1
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135 ldreqh r4, [r1], #2 @ 1ci
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137 bic r4, r4, r7, lsr #1
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139 strneb r4, [r1, #-3]
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140 streqh r4, [r1, #-4]
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142 bic r12, r12, r7, lsr #1
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144 strh r12, [r1, #-4]
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146 bic r4, r4, r7, lsr #1
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150 bic r12, r12, r7, lsr #1
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152 strh r12, [r1, #-2]
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153 bicne r4, r4, r7, lsr #1
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155 strneb r4, [r1], #1
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159 .macro TileDoShGenPixel shift ofs
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161 ands r4, r12, r2, lsr #\shift
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167 ldrgeb r7, [r1,#\ofs]
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168 orrlt r7, r3, r4 @ normal
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170 bicge r7, r7, #0xc0
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171 orrge r7, r7, r4, lsl #6
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172 strb r7, [r1,#\ofs]
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176 @ TileFlipSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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178 TileDoShGenPixel 16, 0 @ #0x000f0000
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179 TileDoShGenPixel 20, 1 @ #0x00f00000
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180 TileDoShGenPixel 24, 2 @ #0x0f000000
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181 TileDoShGenPixel 28, 3 @ #0xf0000000
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182 TileDoShGenPixel 0, 4 @ #0x0000000f
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183 TileDoShGenPixel 4, 5 @ #0x000000f0
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184 TileDoShGenPixel 8, 6 @ #0x00000f00
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185 TileDoShGenPixel 12, 7 @ #0x0000f000
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188 @ TileNormSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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190 TileDoShGenPixel 12, 0 @ #0x0000f000
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191 TileDoShGenPixel 8, 1 @ #0x00000f00
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192 TileDoShGenPixel 4, 2 @ #0x000000f0
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193 TileDoShGenPixel 0, 3 @ #0x0000000f
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194 TileDoShGenPixel 28, 4 @ #0xf0000000
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195 TileDoShGenPixel 24, 5 @ #0x0f000000
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196 TileDoShGenPixel 20, 6 @ #0x00f00000
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197 TileDoShGenPixel 16, 7 @ #0x000f0000
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200 .macro TileDoShGenPixel_markop shift ofs
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202 ands r4, r12, r2, lsr #\shift
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208 ldrgeb r4, [r1,#\ofs]
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210 orrge r4, r4, #0x80
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211 strb r4, [r1,#\ofs]
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215 .macro TileFlipSh_markop
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216 TileDoShGenPixel_markop 16, 0 @ #0x000f0000
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217 TileDoShGenPixel_markop 20, 1 @ #0x00f00000
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218 TileDoShGenPixel_markop 24, 2 @ #0x0f000000
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219 TileDoShGenPixel_markop 28, 3 @ #0xf0000000
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220 TileDoShGenPixel_markop 0, 4 @ #0x0000000f
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221 TileDoShGenPixel_markop 4, 5 @ #0x000000f0
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222 TileDoShGenPixel_markop 8, 6 @ #0x00000f00
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223 TileDoShGenPixel_markop 12, 7 @ #0x0000f000
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226 .macro TileNormSh_markop
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227 TileDoShGenPixel_markop 12, 0 @ #0x0000f000
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228 TileDoShGenPixel_markop 8, 1 @ #0x00000f00
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229 TileDoShGenPixel_markop 4, 2 @ #0x000000f0
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230 TileDoShGenPixel_markop 0, 3 @ #0x0000000f
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231 TileDoShGenPixel_markop 28, 4 @ #0xf0000000
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232 TileDoShGenPixel_markop 24, 5 @ #0x0f000000
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233 TileDoShGenPixel_markop 20, 6 @ #0x00f00000
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234 TileDoShGenPixel_markop 16, 7 @ #0x000f0000
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237 .macro TileDoShGenPixel_onlyop_lp shift ofs
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239 ands r7, r12, r2, lsr #\shift
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243 ldrneb r4, [r1,#\ofs]
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248 bicne r4, r4, #0xc0
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249 orrne r4, r4, r7, lsl #6
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250 strneb r4, [r1,#\ofs]
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254 .macro TileFlipSh_onlyop_lp
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255 TileDoShGenPixel_onlyop_lp 16, 0 @ #0x000f0000
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256 TileDoShGenPixel_onlyop_lp 20, 1 @ #0x00f00000
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257 TileDoShGenPixel_onlyop_lp 24, 2 @ #0x0f000000
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258 TileDoShGenPixel_onlyop_lp 28, 3 @ #0xf0000000
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259 TileDoShGenPixel_onlyop_lp 0, 4 @ #0x0000000f
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260 TileDoShGenPixel_onlyop_lp 4, 5 @ #0x000000f0
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261 TileDoShGenPixel_onlyop_lp 8, 6 @ #0x00000f00
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262 TileDoShGenPixel_onlyop_lp 12, 7 @ #0x0000f000
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265 .macro TileNormSh_onlyop_lp
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266 TileDoShGenPixel_onlyop_lp 12, 0 @ #0x0000f000
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267 TileDoShGenPixel_onlyop_lp 8, 1 @ #0x00000f00
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268 TileDoShGenPixel_onlyop_lp 4, 2 @ #0x000000f0
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269 TileDoShGenPixel_onlyop_lp 0, 3 @ #0x0000000f
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270 TileDoShGenPixel_onlyop_lp 28, 4 @ #0xf0000000
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271 TileDoShGenPixel_onlyop_lp 24, 5 @ #0x0f000000
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272 TileDoShGenPixel_onlyop_lp 20, 6 @ #0x00f00000
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273 TileDoShGenPixel_onlyop_lp 16, 7 @ #0x000f0000
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277 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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281 @ int nametab; // 0x00
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282 @ int line; // 0x04
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283 @ int hscroll; // 0x08
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284 @ int xmask; // 0x0C
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285 @ int *hc; // 0x10 (pointer to cache buffer)
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286 @ int cells; // 0x14
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289 @ void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells,
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290 @ struct PicoEState *est)
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295 ldr r12, [sp] @ est
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296 stmfd sp!, {r4-r11,lr}
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298 ldr r11, [r12, #OFS_Pico_video]
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301 ldrb r7, [r11, #16] @ ??vv??hh
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303 mov r6, r1 @ hcache
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304 orr r9, r3, r0, lsl #30
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305 orr r9, r9, r2, lsl #8 @ r9=sh[31]|cellskip[15:8]|maxcells[7:0] (tmp)
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308 orr r1, r1, #0x00ff
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312 biclt r1, r1, #0xfc00
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313 biceq r1, r1, #0xfe00
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314 bicgt r1, r1, #0xff00 @ r1=ymask=(height<<8)|0xff; ...; // Y Mask in pixels
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318 subge r10, r10, #1 @ r10=shift[width] (5,6,6,7)
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320 ldr r2, [r12, #OFS_DrawScanline]
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321 ldr lr, [r12, #OFS_Pico_vram]
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325 ldreqb r12, [r11, #2]
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326 ldrneb r12, [r11, #4]
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329 mov r5, r8, lsl r10
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330 sub r5, r5, #1 @ r5=xmask
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332 moveq r12, r12, lsl #10
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333 movne r12, r12, lsl #13
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334 and r12, r12, #(7<<13) @ r12=(ts->nametab<<1) (halfword compliant)
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336 ldrh r8, [r11, #12]
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337 ldrb r7, [r11, #11]
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339 mov r4, r8, lsr #8 @ pvid->reg[13]
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340 mov r4, r4, lsl #10 @ htab=pvid->reg[13]<<9; (halfwords)
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342 addne r4, r4, r2, lsl #2 @ htab+=DrawScanline<<1; // Offset by line
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344 biceq r4, r4, #0x1f @ htab&=~0xf; // Offset by tile
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345 add r4, r4, r0, lsl #1 @ htab+=plane
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346 bic r4, r4, #0x00ff0000 @ just in case
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347 ldrh r3, [lr, r4] @ r3=hscroll
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350 bne .DrawStrip_vsscroll
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352 @ Get vertical scroll value:
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353 add r7, lr, #0x012000
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354 add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
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359 bne .DrawStrip_interlace
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362 movne r7, r7, lsr #16
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364 @ Find the line in the name table
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368 add r10, r10, #1 @ shift[width]++
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369 add r12, r12, r4, lsl r10 @ nametab+=(ts.line>>3)<<shift[width];
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371 @ 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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374 mov r10,r10, lsl #1 @ r10=ty=(ts->line&7)<<1;
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375 orr r10,r10, r9, lsl #24
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378 mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
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382 add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1
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386 orrne r10,r10, #1<<23 @ r10=(cells<<24|sh<<23|hi_not_empty<<22|had_output<<21|ty)
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387 movne r3, #0x40 @ default to shadowed pal on sh mode
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390 addne r10,r10, #0x01000000 @ we will loop cells+1 times if there is scroll
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392 and r9, r9, #0xff00
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393 add r8, r8, r9, lsr #8 @ tilex+=cellskip
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394 add r7, r7, r9, lsr #5 @ dx+=cellskip<<3;
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395 sub r10,r10,r9, lsl #16 @ cells-=cellskip
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397 @ cache some stuff to avoid mem access
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398 .if OVERRIDE_HIGHCOL
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407 mvn r9, #0 @ r9=prevcode=-1
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408 add r1, r11, r7 @ r1=pdest
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411 @ r4 & r7 are scratch in this loop
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414 .dsloop: @ 40-41 times
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415 subs r10,r10, #0x01000000
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420 add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
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421 ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
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427 bne .DrawStrip_hiprio
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430 beq .DrawStrip_samecode @ we know stuff about this tile already
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432 mov r9, r7 @ remember code
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433 orr r10, r10, #1<<21 @ seen non hi-prio tile
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435 movs r2, r9, lsl #20 @ if (code&0x1000)
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437 add r2, r2, r10, lsl #17
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438 mov r2, r2, lsr #17
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439 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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441 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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444 and r3, r9, #0x6000
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445 add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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447 .DrawStrip_samecode:
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449 beq .dsloop @ tileline blank
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452 beq .DrawStrip_SingleColor @ tileline singlecolor
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455 bne .DrawStrip_TileFlip
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457 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
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458 .DrawStrip_TileNorm:
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462 .DrawStrip_TileFlip:
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466 .DrawStrip_SingleColor:
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469 orr r4, r4, r4, lsl #8
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470 tst r1, #1 @ not aligned?
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471 strneb r4, [r1], #1
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472 streqh r4, [r1], #2
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476 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
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479 .DrawStrip_hiprio_maybempt:
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481 beq .dsloop @ must've been empty, otherwise we wouldn't get here
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482 movs r2, r7, lsl #20 @ if (code&0x1000)
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484 add r2, r2, r10, lsl #17
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485 mov r2, r2, lsr #17
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486 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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487 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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488 mov r9, r7 @ remember code
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491 orr r10, r10, #1<<22
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494 tst r10, #0x00c00000
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495 beq .DrawStrip_hiprio_maybempt
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497 orr r7, r7, r0, lsl #16
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498 orr r7, r7, r10, lsl #25 @ (ty<<25)
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500 eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;
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501 str r7, [r6], #4 @ cache hi priority tile
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506 tst r10, #1<<21 @ seen non hi-prio tile
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507 ldr r1, [sp, #9*4] @ est
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509 ldreq r2, [r1, #OFS_rendstatus]
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510 str r0, [r6] @ terminate the cache list
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511 orreq r2, r2, #PDRAW_PLANE_HI_PRIO @ had a layer with all hi-prio tiles
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512 streq r2, [r1, #OFS_rendstatus]
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514 ldmfd sp!, {r4-r11,lr}
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517 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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519 .DrawStrip_vsscroll:
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521 mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
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522 bic r8, r8, #0x3fc00000
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523 orr r8, r8, r5, lsl #25 @ r8=(xmask[31:25]|had_output[24]|tilex[21:0])
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525 ldr r11, [sp, #9*4] @ est
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526 orr r5, r1, r10, lsl #24
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527 ldr r4, [r11, #OFS_DrawScanline]
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529 orr r5, r5, r4, lsl #16 @ r5=(shift_width[31:24]|scanline[23:16]|ymask[15:0])
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531 add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1
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533 mov r10,r9, lsl #16
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535 orrne r10,r10, #0x8000
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538 orr r10,r10, #0xff000000 @ will be adjusted on entering loop
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539 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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540 movne r3, #0x40 @ default to shadowed pal on sh mode
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543 subne r10,r10, #0x01000000 @ have hscroll, start with negative cell
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545 and r9, r9, #0xff00
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546 add r8, r8, r9, lsr #8 @ tilex+=cellskip
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547 add r7, r7, r9, lsr #5 @ dx+=cellskip<<3;
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548 add r10,r10,r9, lsl #16 @ cell+=cellskip
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550 @ cache some stuff to avoid mem access
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551 .if OVERRIDE_HIGHCOL
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560 mvn r9, #0 @ r9=prevcode=-1
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561 add r1, r11, r7 @ r1=pdest
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563 @ r4 & r7 are scratch in this loop
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566 .dsloop_vs: @ 40-41 times
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567 add r10,r10, #0x01000000
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568 and r4, r10, #0x003f0000
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569 cmp r4, r10, asr #8
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570 ble .dsloop_vs_exit
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572 @ calc offset and read tileline code to r7, also calc ty
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573 add r7, lr, #0x012000
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574 add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
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575 add r7, r7, r10,asr #23 @ vsram + ((cell&~1)<<1)
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577 tst r10,#0x8000 @ plane1?
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579 ldrh r7, [r7] @ r7=vscroll
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581 bic r10,r10,#0xff @ clear old ty
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582 and r4, r5, #0xff0000 @ scanline
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583 add r4, r4, r7, lsl #16 @ ... += vscroll
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584 and r4, r4, r5, lsl #16 @ ... &= ymask
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585 and r7, r4, #0x70000
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586 orr r10,r10,r7, lsr #15 @ new ty
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588 mov r4, r4, lsr #19
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589 mov r7, r5, lsr #24
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590 mov r4, r4, lsl r7 @ nametabadd
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592 and r7, r8, r8, lsr #25
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593 add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
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594 add r7, r7, r4, lsl #1
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595 ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
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601 bne .DrawStrip_vs_hiprio
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604 beq .DrawStrip_vs_samecode @ we know stuff about this tile already
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606 mov r9, r7 @ remember code
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607 orr r8, r8, #(1<<24)@ seen non hi-prio tile
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609 movs r2, r9, lsl #20 @ if (code&0x1000)
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611 add r2, r2, r10, lsl #17
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612 mov r2, r2, lsr #17
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613 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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615 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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618 and r3, r9, #0x6000
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619 add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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621 .DrawStrip_vs_samecode:
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623 beq .dsloop_vs @ tileline blank
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626 beq .DrawStrip_vs_SingleColor @ tileline singlecolor
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629 bne .DrawStrip_vs_TileFlip
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631 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
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632 .DrawStrip_vs_TileNorm:
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636 .DrawStrip_vs_TileFlip:
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640 .DrawStrip_vs_SingleColor:
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643 orr r4, r4, r4, lsl #8
\r
644 tst r1, #1 @ not aligned?
\r
645 strneb r4, [r1], #1
\r
646 streqh r4, [r1], #2
\r
650 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
\r
653 .DrawStrip_vs_hiprio:
\r
654 tst r10, #0x00c00000
\r
655 beq .DrawStrip_vs_hiprio_maybempt
\r
657 orr r7, r7, r0, lsl #16
\r
658 orr r7, r7, r10, lsl #25 @ (ty<<25)
\r
660 eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;
\r
661 str r7, [r6], #4 @ cache hi priority tile
\r
665 .DrawStrip_vs_hiprio_maybempt:
\r
667 beq .dsloop_vs @ must've been empty, otherwise we wouldn't get here
\r
668 movs r2, r7, lsl #20 @ if (code&0x1000)
\r
670 add r2, r2, r10, lsl #17
\r
671 mov r2, r2, lsr #17
\r
672 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
\r
673 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
674 mov r9, r7 @ remember code
\r
676 orrne r10, r10, #1<<22
\r
677 bne .DrawStrip_vs_hiprio
\r
681 tst r8, #(1<<24) @ seen non hi-prio tile
\r
682 ldr r1, [sp, #9*4] @ est
\r
684 ldreq r2, [r1, #OFS_rendstatus]
\r
685 str r0, [r6] @ terminate the cache list
\r
686 orreq r2, r2, #PDRAW_PLANE_HI_PRIO @ had a layer with all hi-prio tiles
\r
687 streq r2, [r1, #OFS_rendstatus]
\r
689 ldmfd sp!, {r4-r11,lr}
\r
693 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
695 @ interlace mode 2? Sonic 2?
\r
696 .DrawStrip_interlace:
\r
698 moveq r7, r7, lsl #21
\r
699 movne r7, r7, lsl #5
\r
701 @ Find the line in the name table
\r
702 add r2, r7, r2, lsl #22 @ r2=(vscroll+(DrawScanline<<1))<<21 (11 bits);
\r
703 orr r1, r1, #0x80000000
\r
704 and r2, r2, r1, ror #10 @ &((ymask<<1)|1)<<21;
\r
705 mov r2, r2, lsr #21
\r
707 mov r12, r12, lsr #1 @ halfwords
\r
708 add r0, r12, r4, lsl r10 @ nametab+=(ts.line>>4)<<shift[width];
\r
712 stmia sp, {r0,r2,r3,r5,r6,r9}
\r
715 bl DrawStripInterlace @ struct TileStrip *ts
\r
718 ldmfd sp!, {r4-r11,lr}
\r
723 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
726 .global BackFill @ int reg7, int sh
\r
729 stmfd sp!, {r4-r9,lr}
\r
731 .if OVERRIDE_HIGHCOL
\r
733 mov r0, r0, lsl #26
\r
735 mov r0, r0, lsr #26
\r
738 ldr lr, =(HighCol+8)
\r
739 mov r0, r0, lsl #26
\r
740 mov r0, r0, lsr #26
\r
743 orr r0, r0, r1, lsl #6
\r
744 orr r0, r0, r0, lsl #8
\r
745 orr r0, r0, r0, lsl #16
\r
756 stmia lr!, {r0-r7} @ 10*8*4
\r
767 ldmfd sp!, {r4-r9,r12}
\r
771 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
773 @ void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est)
\r
775 .global DrawTilesFromCache
\r
777 DrawTilesFromCache:
\r
778 stmfd sp!, {r4-r9,r11,lr}
\r
780 @ cache some stuff to avoid mem access
\r
781 .if OVERRIDE_HIGHCOL
\r
789 ldr lr, [r3, #OFS_Pico_vram]
\r
792 mvn r5, #0 @ r5=prevcode=-1
\r
794 orr r8, r8, r2, lsl #1
\r
795 bne .dtfc_check_rendflags
\r
799 ldr r6, [r0], #4 @ read code
\r
800 movs r1, r6, lsr #16 @ r1=dx;
\r
801 ldmeqfd sp!, {r4-r9,r11,pc} @ dx is never zero, this must be a terminator, return
\r
802 bic r4, r1, #0xfe00
\r
803 add r1, r11, r4 @ r1=pdest
\r
805 mov r7, r6, lsl #16
\r
806 cmp r5, r7, lsr #16
\r
807 beq .dtfc_samecode @ if (code==prevcode)
\r
809 mov r5, r7, lsr #16
\r
811 mov r2, r5, lsl #21
\r
812 mov r2, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4;
\r
813 add r2, r2, r6, lsr #25 @ addr+=ty
\r
815 and r3, r5, #0x6000
\r
816 mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
\r
818 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
821 rsbs r4, r4, r8, lsr #1
\r
831 beq .dtfc_SingleColor @ tileline singlecolor
\r
836 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
848 orr r4, r4, r4, lsl #8
\r
849 tst r1, #1 @ not aligned?
\r
850 strneb r4, [r1], #1
\r
851 streqh r4, [r1], #2
\r
855 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
\r
860 beq .dtfc_shadow_blank
\r
863 beq .dtfc_SingleColor @ tileline singlecolor
\r
866 bne .dtfc_TileFlipShHP
\r
868 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
869 .dtfc_TileNormShHP:
\r
873 .dtfc_TileFlipShHP:
\r
877 .dtfc_shadow_blank:
\r
882 strneb r4, [r1], #1
\r
884 orr r6, r6, r6, lsl #8
\r
900 add r4, r4, #7 @ 0-6
\r
904 mov r2, r2, ror #16
\r
905 tst r5, #0x0800 @ flipped?
\r
908 mov r2, r2, ror #16
\r
918 @ check if we have detected layer covered with hi-prio tiles:
\r
919 .dtfc_check_rendflags:
\r
920 ldr r2, [r9, #OFS_rendstatus]
\r
921 tst r2, #(PDRAW_PLANE_HI_PRIO|PDRAW_SHHI_DONE)
\r
923 bic r8, r8, #1 @ sh/hi mode off
\r
924 tst r2, #PDRAW_SHHI_DONE
\r
925 bne .dtfc_loop @ already processed
\r
926 orr r2, r2, #PDRAW_SHHI_DONE
\r
927 str r2, [r9, #OFS_rendstatus]
\r
932 orr r6, r6, r6, lsl #8
\r
933 orr r6, r6, r6, lsl #16
\r
935 ldmia r1, {r2,r4,r5,r7}
\r
941 stmia r1!,{r2,r4,r5,r7}
\r
942 bne .dtfc_loop_shprep
\r
944 mvn r5, #0 @ r5=prevcode=-1
\r
949 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
952 @ void DrawSpritesSHi(unsigned char *sprited, struct PicoEState *est)
\r
954 .global DrawSpritesSHi
\r
962 stmfd sp!, {r1,r4-r11,lr} @ +est
\r
963 strb r12,[r0,#2] @ set end marker
\r
964 add r10,r0, #3 @ r10=HighLnSpr end
\r
965 add r10,r10,r3 @ r10=HighLnSpr end
\r
967 .if OVERRIDE_HIGHCOL
\r
975 ldr lr, [r1, #OFS_Pico_vram]
\r
980 ldrb r0, [r10,#-1]!
\r
982 ldr r1, =HighPreSpr
\r
984 ldmeqfd sp!, {r1,r4-r11,pc} @ end of list
\r
986 add r0, r1, r0, lsl #3
\r
988 ldr r9, [r0, #4] @ sprite[1]
\r
989 mov r2, r9, asr #16 @ r2=sx
\r
991 mov r9, r9, lsl #16
\r
992 mov r3, r9, lsr #31 @ priority
\r
993 mov r9, r9, lsr #16
\r
994 @ orr r9, r9, r8, lsl #31 @ r9=code|sh[31] @@ sh is always on here now
\r
995 and r4, r9, #0x6000
\r
996 orr r9, r9, r4, lsl #16
\r
997 orr r9, r9, #0x90000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)
\r
998 cmp r12,r9, lsr #28 @ sh/hi with pal3?
\r
999 cmpne r3, #1 @ if not, is it hi prio?
\r
1000 bne DrawSpriteSHi @ non-operator low sprite, already drawn
\r
1002 ldr r3, [r0] @ sprite[0]
\r
1003 mov r6, r3, lsr #28
\r
1004 sub r6, r6, #1 @ r6=width-1 (inc later)
\r
1005 mov r5, r3, lsr #24
\r
1006 and r5, r5, #7 @ r5=height
\r
1008 ldr r7, [r7, #OFS_DrawScanline]
\r
1009 mov r0, r3, lsl #16 @ r4=sy<<16 (tmp)
\r
1011 sub r7, r7, r0, asr #16 @ r7=row=DrawScanline-sy
\r
1014 movne r0, r5, lsl #3
\r
1016 subne r7, r0, r7 @ if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
1018 add r8, r9, r7, lsr #3 @ tile+=row>>3; // Tile number increases going down
\r
1020 mlane r8, r5, r6, r8 @ if (code&0x0800) { tile+=delta*(width-1);
\r
1021 rsbne r5, r5, #0 @ delta=-delta; } // r5=delta now
\r
1023 mov r8, r8, lsl #21
\r
1024 mov r8, r8, lsr #17
\r
1026 add r8, r8, r7, lsl #1 @ tile+=(row&7)<<1; // Tile address
\r
1028 mov r5, r5, lsl #4 @ delta<<=4; // Delta of address
\r
1029 mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);
\r
1031 add r6, r6, #1 @ inc now
\r
1032 adds r0, r2, #0 @ mov sx to r0 and set ZV flags
\r
1033 b .dsprShi_loop_enter
\r
1036 subs r6, r6, #1 @ width--
\r
1038 adds r0, r0, #8 @ sx+=8
\r
1039 add r8, r8, r5 @ tile+=delta
\r
1041 .dsprShi_loop_enter:
\r
1042 ble .dsprShi_loop @ sx <= 0
\r
1046 mov r8, r8, lsl #17
\r
1047 mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address
\r
1049 ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1050 add r1, r11, r0 @ r1=pdest
\r
1054 cmp r12, r9, lsr #28
\r
1055 beq .dsprShi_shadow
\r
1057 cmp r2, r2, ror #4
\r
1058 beq .dsprShi_SingleColor @ tileline singlecolor
\r
1061 bne .dsprShi_TileFlip
\r
1063 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1065 .dsprShi_TileNorm:
\r
1069 .dsprShi_TileFlip:
\r
1073 .dsprShi_SingleColor:
\r
1076 orr r4, r4, r4, lsl #8
\r
1077 tst r0, #1 @ not aligned?
\r
1078 strneb r4, [r1], #1
\r
1079 streqh r4, [r1], #2
\r
1083 strneb r4, [r1], #1
\r
1088 beq .dsprShi_shadow_lowpri
\r
1090 cmp r2, r2, ror #4
\r
1091 beq .dsprShi_singlec_sh
\r
1094 bne .dsprShi_TileFlip_sh
\r
1096 @ (r1=pdest, r2=pixels8, r3=pal) r4, r7: scratch, r12: helper pattern
\r
1097 .dsprShi_TileNorm_sh:
\r
1101 .dsprShi_TileFlip_sh:
\r
1105 .dsprShi_singlec_sh:
\r
1106 cmp r2, #0xe0000000
\r
1107 bcc .dsprShi_SingleColor @ normal singlecolor tileline (carry inverted in ARM)
\r
1108 tst r2, #0x10000000
\r
1109 bne .dsprShi_sh_sh
\r
1117 .dsprShi_shadow_lowpri:
\r
1119 bne .dsprShi_TileFlip_sh_lp
\r
1121 .dsprShi_TileNorm_sh_lp:
\r
1122 TileNormSh_onlyop_lp
\r
1125 .dsprShi_TileFlip_sh_lp:
\r
1126 TileFlipSh_onlyop_lp
\r
1131 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1133 @ void DrawAllSprites(unsigned char *sprited, int prio, int sh,
\r
1134 @ struct PicoEState *est)
\r
1136 .global DrawAllSprites
\r
1139 orr r1, r2, r1, lsl #1
\r
1140 ldr r12,[r3, #OFS_rendstatus]
\r
1141 tst r12,#(PDRAW_DIRTY_SPRITES|PDRAW_SPRITES_MOVED)
\r
1143 stmfd sp!, {r0,r1,r3,lr}
\r
1144 and r0, r12,#PDRAW_DIRTY_SPRITES
\r
1145 bic r12,r12,#(PDRAW_DIRTY_SPRITES|PDRAW_SPRITES_MOVED)
\r
1146 str r12,[r3, #OFS_rendstatus]
\r
1148 ldmfd sp!, {r0,r1,r3,lr}
\r
1152 ands r2, r2, #0x7f
\r
1155 @ time to do some real work
\r
1156 stmfd sp!, {r1,r3-r11,lr} @ +sh|prio<<1 +est
\r
1158 strb r12,[r0,#2] @ set end marker
\r
1160 add r10,r10,r2 @ r10=HighLnSpr end
\r
1162 .if OVERRIDE_HIGHCOL
\r
1170 ldr lr, [r3, #OFS_Pico_vram]
\r
1172 @ + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: horiz. size
\r
1173 @ + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
1176 @ draw next sprite
\r
1177 ldrb r0, [r10,#-1]!
\r
1178 ldr r8, [sp] @ sh|prio<<1
\r
1179 ldr r7, [sp, #4] @ est
\r
1180 mov r2, r0, lsr #7
\r
1182 ldmeqfd sp!, {r1,r3-r11,pc} @ end of list
\r
1183 cmp r2, r8, lsr #1
\r
1184 bne DrawSprite @ wrong priority
\r
1185 ldr r1, =HighPreSpr
\r
1187 add r0, r1, r0, lsl #3
\r
1189 ldr r3, [r0] @ sprite[0]
\r
1190 ldr r7, [r7, #OFS_DrawScanline]
\r
1191 mov r6, r3, lsr #28
\r
1192 sub r6, r6, #1 @ r6=width-1 (inc later)
\r
1193 mov r5, r3, lsr #24
\r
1194 and r5, r5, #7 @ r5=height
\r
1196 mov r4, r3, lsl #16 @ r4=sy<<16 (tmp)
\r
1199 sub r7, r7, r4, asr #16 @ r7=row=DrawScanline-sy
\r
1201 mov r2, r9, asr #16 @ r2=sx
\r
1202 mov r9, r9, lsl #16
\r
1203 mov r9, r9, lsr #16
\r
1204 orr r9, r9, r8, lsl #31 @ r9=code|sh[31]
\r
1207 movne r4, r5, lsl #3
\r
1209 subne r7, r4, r7 @ if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
1211 add r8, r9, r7, lsr #3 @ tile+=row>>3; // Tile number increases going down
\r
1213 mlane r8, r5, r6, r8 @ if (code&0x0800) { tile+=delta*(width-1);
\r
1214 rsbne r5, r5, #0 @ delta=-delta; } // r5=delta now
\r
1216 mov r8, r8, lsl #21
\r
1217 mov r8, r8, lsr #17
\r
1219 add r8, r8, r7, lsl #1 @ tile+=(row&7)<<1; // Tile address
\r
1222 @ cache some stuff to avoid mem access
\r
1223 mov r5, r5, lsl #4 @ delta<<=4; // Delta of address
\r
1224 and r4, r9, #0x6000
\r
1225 orr r9, r9, r4, lsl #16
\r
1226 orrs r9, r9, #0x10000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)
\r
1228 mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);
\r
1229 orrmi r3, r3, #0x40 @ for sh/hi
\r
1231 add r6, r6, #1 @ inc now
\r
1232 adds r0, r2, #0 @ mov sx to r0 and set ZV flags
\r
1233 b .dspr_loop_enter
\r
1236 subs r6, r6, #1 @ width--
\r
1238 adds r0, r0, #8 @ sx+=8
\r
1239 add r8, r8, r5 @ tile+=delta
\r
1242 ble .dspr_loop @ sx <= 0
\r
1246 mov r8, r8, lsl #17
\r
1247 mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address
\r
1249 ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1250 add r1, r11, r0 @ r1=pdest
\r
1254 cmp r12, r9, lsr #28
\r
1257 cmp r2, r2, ror #4
\r
1258 beq .dspr_SingleColor @ tileline singlecolor
\r
1261 bne .dspr_TileFlip
\r
1263 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1274 cmp r2, #0xe0000000
\r
1275 bcs .dspr_TileNorm_sh @ op. tileline, markop. XXX: maybe add a spec. handler?
\r
1277 .dspr_SingleColor:
\r
1280 orr r4, r4, r4, lsl #8
\r
1281 tst r0, #1 @ not aligned?
\r
1282 strneb r4, [r1], #1
\r
1283 streqh r4, [r1], #2
\r
1287 strneb r4, [r1], #1
\r
1291 cmp r2, r2, ror #4
\r
1292 beq .dspr_singlec_sh
\r
1295 bne .dspr_TileFlip_sh
\r
1297 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1298 .dspr_TileNorm_sh:
\r
1302 .dspr_TileFlip_sh:
\r
1307 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1309 @ void DrawWindow(int tstart, int tend, int prio, int sh
\r
1310 @ struct PicoEState *est)
\r
1312 .global DrawWindow
\r
1315 ldr r12, [sp] @ est
\r
1316 stmfd sp!, {r4-r11,lr}
\r
1318 ldr r6, [r12, #OFS_Pico_video]
\r
1319 ldr r10, [r12, #OFS_DrawScanline]
\r
1320 mov r11, r12 @ est
\r
1321 ldrb r12, [r6, #3] @ pvid->reg[3]
\r
1324 mov r5, r10, lsr #3
\r
1326 mov r10, r10, lsl #1 @ r10=ty
\r
1328 mov r12, r12, lsl #10
\r
1330 tst r4, #1 @ 40 cell mode?
\r
1331 andne r12, r12, #0xf000 @ 0x3c<<10
\r
1332 andeq r12, r12, #0xf800
\r
1333 addne r12, r12, r5, lsl #7
\r
1334 addeq r12, r12, r5, lsl #6 @ nametab
\r
1335 add r12, r12, r0, lsl #2 @ +starttile
\r
1337 ldr lr, [r11, #OFS_Pico_vram]
\r
1338 ldr r6, [r11, #OFS_rendstatus]
\r
1340 @ fetch the first code now
\r
1341 ldrh r7, [lr, r12]
\r
1343 ands r6, r6, #PDRAW_WND_DIFF_PRIO
\r
1346 eoreq r8, r2, r7, lsr #15 @ do prio bits differ?
\r
1348 ldmeqfd sp!, {r4-r11,pc} @ yes, assume that whole window uses same priority
\r
1350 orr r6, r6, r3, lsl #8 @ shadow mode
\r
1354 @ cache some stuff to avoid mem access
\r
1355 .if OVERRIDE_HIGHCOL
\r
1357 mov r8, r8, lsl #1 @ cells
\r
1359 mvn r9, #0 @ r9=prevcode=-1
\r
1362 ldr r11,=(HighCol+8)
\r
1363 mov r8, r8, lsl #1 @ cells
\r
1364 mvn r9, #0 @ r9=prevcode=-1
\r
1366 add r1, r11, r0, lsl #4 @ r1=pdest
\r
1370 @ r4,r5 are scratch in this loop
\r
1374 add r12, r12, #2 @ halfwords
\r
1375 ldrh r7, [lr, r12] @ r7=code (int, but from unsigned, no sign extend)
\r
1377 beq .dwloop_end @ done
\r
1379 eor r5, r6, r7, lsr #15
\r
1381 orrne r6, r6, #2 @ wrong pri
\r
1385 beq .dw_samecode @ we know stuff about this tile already
\r
1388 mov r9, r7 @ remember code
\r
1390 movs r2, r9, lsl #20 @ if (code&0x1000)
\r
1391 mov r2, r2, lsl #1
\r
1392 add r2, r10, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4; addr+=ty
\r
1393 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
\r
1395 and r3, r9, #0x6000
\r
1396 mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
\r
1398 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1405 beq .dwloop @ tileline blank
\r
1407 cmp r2, r2, ror #4
\r
1408 beq .dw_SingleColor @ tileline singlecolor
\r
1413 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
\r
1423 and r4, r0, r2 @ #0x0000000f
\r
1425 orr r4, r4, r4, lsl #8
\r
1426 orr r4, r4, r4, lsl #16
\r
1428 stmia r1!, {r4,r5}
\r
1429 b .dwloop_nor1 @ we incremeted r1 ourselves
\r
1432 tst r6, #1 @ hi pri?
\r
1433 orreq r3, r3, #0x40
\r
1434 beq .dw_shadow_done
\r
1437 orr r5, r5, r5, lsl #8
\r
1438 orr r5, r5, r5, lsl #16
\r
1447 and r2, r6, #PDRAW_WND_DIFF_PRIO
\r
1448 ldmfd sp!, {r4-r11,lr}
\r
1450 ldr r1, [r0, #OFS_rendstatus]
\r
1452 str r1, [r0, #OFS_rendstatus]
\r
1457 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1460 @ hilights 2 pixels in RGB444/BGR444 format
\r
1461 .macro TileDoShHi2Pixels444 reg
\r
1462 mov \reg, \reg, ror #12
\r
1463 adds \reg, \reg, #0x40000000
\r
1464 orrcs \reg, \reg, #0xf0000000
\r
1465 mov \reg, \reg, ror #28
\r
1466 adds \reg, \reg, #0x40000000
\r
1467 orrcs \reg, \reg, #0xf0000000
\r
1468 mov \reg, \reg, ror #28
\r
1469 adds \reg, \reg, #0x40000000
\r
1470 orrcs \reg, \reg, #0xf0000000
\r
1471 mov \reg, \reg, ror #24
\r
1472 adds \reg, \reg, #0x40000000
\r
1473 orrcs \reg, \reg, #0xf0000000
\r
1474 mov \reg, \reg, ror #28
\r
1475 adds \reg, \reg, #0x40000000
\r
1476 orrcs \reg, \reg, #0xf0000000
\r
1477 mov \reg, \reg, ror #28
\r
1478 adds \reg, \reg, #0x40000000
\r
1479 orrcs \reg, \reg, #0xf0000000
\r
1480 mov \reg, \reg, ror #12
\r
1484 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1487 @ Convert 0000bbb0 ggg0rrr0
\r
1488 @ to rrrrrggg gggbbbbb
\r
1490 @ r2,r3 - scratch, lr = 0x001c001c, r8 = 0x08610861
\r
1491 .macro convRGB565 reg
\r
1492 and r2, lr, \reg,lsr #7 @ b
\r
1493 and r3, lr, \reg,lsr #3 @ g
\r
1494 and \reg, lr, \reg,lsl #1 @ r
\r
1495 orr r2, r2, r3, lsl #6
\r
1496 orr \reg, r2, \reg,lsl #11
\r
1498 and r2, r8, \reg,lsr #4
\r
1499 orr \reg, \reg, r2
\r
1502 @ trashes: r2-r8,r12,lr; r8 = 0x08610861; r0,r1 are advanced
\r
1503 .macro vidConvCpyRGB565_local
\r
1504 mov r12, r2, lsr #3 @ repeats
\r
1505 mov lr, #0x001c0000
\r
1506 orr lr, lr, #0x01c @ lr == pattern 0x001c001c
\r
1509 ldmia r1!, {r4-r7}
\r
1524 .global vidConvCpyRGB565
\r
1526 vidConvCpyRGB565: @ void *to, void *from, int pixels
\r
1527 stmfd sp!, {r4-r9,lr}
\r
1529 orr r8, r8, #0x0800
\r
1530 orr r8, r8, r8, lsl #16
\r
1531 vidConvCpyRGB565_local
\r
1532 ldmfd sp!, {r4-r9,lr}
\r
1536 @ void PicoDoHighPal555(int sh, int line, struct PicoEState *est)
\r
1538 .global PicoDoHighPal555
\r
1541 stmfd sp!, {r4-r10,lr}
\r
1544 ldr r8, [r10, #OFS_Pico_video]
\r
1546 PicoDoHighPal555_nopush:
\r
1547 orr r9, r1, r0, lsl #31 @ 0:called from FinalizeLine555, 31: s/h
\r
1552 strb r1, [r8, #-0x1a] @ 0x2220e ~ dirtyPal
\r
1554 sub r1, r8, #0x128 @ r1=Pico.cram
\r
1557 orr r8, r8, #0x0800
\r
1558 orr r8, r8, r8, lsl #16
\r
1560 vidConvCpyRGB565_local
\r
1563 beq PicoDoHighPal555_end
\r
1567 @ shadowed pixels:
\r
1569 add r4, r3, #0x40*2
\r
1570 orr r12,r12,#0x7300
\r
1571 add r5, r3, #0xc0*2
\r
1572 orr r12,r12,r12,lsl #16
\r
1574 .fl_loopcpRGB555_sh:
\r
1575 ldmia r3!, {r1,r6}
\r
1577 and r1, r12, r1, lsr #1
\r
1578 and r6, r12, r6, lsr #1
\r
1579 stmia r4!, {r1,r6}
\r
1580 stmia r5!, {r1,r6}
\r
1581 bne .fl_loopcpRGB555_sh
\r
1583 @ hilighted pixels:
\r
1584 @ t = ((dpal[i] >> 1) & 0x738e738e) + 0x738e738e;
\r
1585 @ t |= (t >> 4) & 0x08610861;
\r
1587 sub r3, r3, #0x40*2
\r
1589 .fl_loopcpRGB555_hi:
\r
1590 ldmia r3!, {r1,r6}
\r
1591 and r1, r12, r1, lsr #1
\r
1592 and r6, r12, r6, lsr #1
\r
1595 and r5, r8, r1, lsr #4
\r
1596 and r7, r8, r6, lsr #4
\r
1599 stmia r4!, {r1,r6}
\r
1601 bne .fl_loopcpRGB555_hi
\r
1604 PicoDoHighPal555_end:
\r
1606 ldmeqfd sp!, {r4-r10,pc}
\r
1608 ldr r8, [r10, #OFS_Pico_video]
\r
1609 b FinalizeLineRGB555_pal_done
\r
1612 @ void FinalizeLine555(int sh, int line, struct PicoEState *est)
\r
1614 .global FinalizeLine555
\r
1617 stmfd sp!, {r4-r10,lr}
\r
1619 ldr r8, [r10, #OFS_Pico_video]
\r
1621 ldrb r2, [r8, #-0x1a] @ 0x2220e ~ dirtyPal
\r
1624 bne PicoDoHighPal555_nopush
\r
1626 FinalizeLineRGB555_pal_done:
\r
1629 ldr r12, [r10, #OFS_rendstatus]
\r
1630 eors r0, r0, #1 @ sh is 0
\r
1632 tstne r12,#PDRAW_ACC_SPRITES
\r
1635 .if OVERRIDE_HIGHCOL
\r
1637 ldr r0, =DrawLineDest
\r
1642 ldr r0, =DrawLineDest
\r
1643 ldr r1, =(HighCol+8)
\r
1647 ldrb r12, [r8, #12]
\r
1648 mov lr, lr, lsl #1
\r
1651 movne r2, #320/8 @ len
\r
1652 bne .fl_no32colRGB555
\r
1657 bne .fl_32scale_RGB555
\r
1659 addeq r0, r0, #32*2
\r
1661 .fl_no32colRGB555:
\r
1663 #ifdef UNALIGNED_DRAWLINEDEST
\r
1664 @ this is basically for Gizmondo, which has unaligned odd lines in the framebuffer
\r
1673 and r4, lr, r12, lsl #1
\r
1675 and r5, lr, r12, lsr #7
\r
1677 and r6, lr, r12, lsr #15
\r
1679 orr r4, r4, r5, lsl #16
\r
1681 and r5, lr, r12, lsr #23
\r
1683 and r8, lr, r7, lsl #1
\r
1685 orr r5, r6, r5, lsl #16
\r
1687 and r6, lr, r7, lsr #7
\r
1689 and r12,lr, r7, lsr #15
\r
1690 ldrh r12,[r3, r12]
\r
1691 and r7, lr, r7, lsr #23
\r
1693 orr r8, r8, r6, lsl #16
\r
1696 orr r12,r12, r7, lsl #16
\r
1698 stmia r0!, {r4,r5,r8,r12}
\r
1699 bne .fl_loopRGB555
\r
1701 ldmfd sp!, {r4-r10,lr}
\r
1705 .fl_32scale_RGB555:
\r
1706 mov r9, #0x3900 @ f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
\r
1707 orr r9, r9, #0x00e7
\r
1709 #ifdef UNALIGNED_DRAWLINEDEST
\r
1711 bne .fl_32scale_RGB555u
\r
1714 .fl_loop32scale_RGB555:
\r
1718 and r4, lr, r12,lsl #1
\r
1720 and r5, lr, r12,lsr #7
\r
1722 and r4, r4, r9, lsl #2
\r
1723 orr r4, r4, r4, lsl #14 @ r4[31:16] = 1/4 pix_s 0
\r
1724 and r5, r5, r9, lsl #2
\r
1725 sub r6, r5, r5, lsr #2 @ r6 = 3/4 pix_s 1
\r
1726 add r4, r4, r6, lsl #16 @ pix_d 0, 1
\r
1727 and r6, lr, r12,lsr #15
\r
1729 and r12,lr, r12,lsr #23
\r
1730 ldrh r12,[r3, r12]
\r
1731 and r6, r6, r9, lsl #2
\r
1733 mov r5, r5, lsr #1
\r
1734 sub r6, r6, r6, lsr #2 @ r6 = 3/4 pix_s 2
\r
1735 orr r5, r5, r6, lsl #16
\r
1737 and r6, lr, r7, lsl #1
\r
1739 and r12,r12,r9, lsl #2
\r
1740 add r5, r5, r12,lsl #14 @ pix_d 2, 3
\r
1741 and r6, r6, r9, lsl #2
\r
1742 orr r6, r12,r6, lsl #16 @ pix_d 4, 5
\r
1744 and r12,lr, r7, lsr #7
\r
1745 ldrh r12,[r3, r12]
\r
1746 and r10,lr, r7, lsr #15
\r
1747 ldrh r10,[r3, r10]
\r
1748 and r12,r12,r9, lsl #2
\r
1749 sub r8, r12,r12,lsr #2 @ r8 = 3/4 pix_s 1
\r
1750 add r8, r8, r6, lsr #18
\r
1751 and r7, lr, r7, lsr #23
\r
1753 and r10,r10,r9, lsl #2
\r
1754 orr r8, r8, r10,lsl #15
\r
1755 add r8, r8, r12,lsl #15 @ pix_d 6, 7
\r
1756 sub r10,r10,r10,lsr #2 @ r10= 3/4 pix_s 2
\r
1757 and r7, r7, r9, lsl #2
\r
1758 add r10,r10,r7, lsr #2 @ += 1/4 pix_s 3
\r
1759 orr r10,r10,r7, lsl #16 @ pix_d 8, 9
\r
1763 stmia r0!, {r4,r5,r6,r8,r10}
\r
1764 bne .fl_loop32scale_RGB555
\r
1766 ldmfd sp!, {r4-r10,lr}
\r
1769 #ifdef UNALIGNED_DRAWLINEDEST
\r
1770 @ unaligned versions of loops
\r
1771 @ warning: starts drawing 2bytes before dst
\r
1774 sub r0, r0, #2 @ initial adjustment
\r
1781 and r6, lr, r12,lsl #1
\r
1783 and r5, lr, r12,lsr #7
\r
1785 orr r4, r8, r6, lsl #16
\r
1787 and r6, lr, r12,lsr #15
\r
1789 and r8, lr, r12,lsr #23
\r
1791 orr r5, r5, r6, lsl #16
\r
1793 and r6, lr, r7, lsl #1
\r
1795 and r12,lr, r7, lsr #7
\r
1796 ldrh r12,[r3, r12]
\r
1797 orr r6, r8, r6, lsl #16
\r
1799 and r8, lr, r7, lsr #15
\r
1801 and r7, lr, r7, lsr #23
\r
1804 orr r12,r12,r8, lsl #16
\r
1807 stmia r0!, {r4,r5,r6,r12}
\r
1808 bne .fl_loopRGB555u
\r
1812 ldmfd sp!, {r4-r10,lr}
\r
1816 .fl_32scale_RGB555u:
\r
1817 sub r0, r0, #2 @ initial adjustment
\r
1820 @ r9 f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
\r
1821 .fl_loop32scale_RGB555u:
\r
1825 and r6, lr, r12,lsl #1
\r
1827 and r5, lr, r12,lsr #7
\r
1829 and r6, r6, r9, lsl #2
\r
1830 orr r4, r4, r6, lsl #16 @ r4 = pix_d -1, 0
\r
1832 and r5, r5, r9, lsl #2
\r
1833 sub r8, r5, r5, lsr #2 @ r8 = 3/4 pix_s 1
\r
1834 add r6, r8, r6, lsr #2 @ r6 = (1/4 pix_s 0) + (3/4 pix_s 1)
\r
1835 orr r5, r6, r5, lsl #15
\r
1837 and r6, lr, r12,lsr #15
\r
1839 and r12,lr, r12,lsr #23
\r
1840 ldrh r12,[r3, r12]
\r
1841 and r6, r6, r9, lsl #2
\r
1842 add r5, r5, r6, lsl #15 @ r5 = pix_d 1, 2
\r
1844 and r8, lr, r7, lsl #1
\r
1846 and r10,lr, r7, lsr #7
\r
1847 ldrh r10,[r3, r10]
\r
1848 and r12,r12,r9, lsl #2
\r
1849 sub r6, r6, r6, lsr #2 @ r6 = 3/4 pix_s 2
\r
1850 add r6, r6, r12,lsr #2
\r
1851 orr r6, r6, r12,lsl #16 @ r6 = pix_d 3, 4
\r
1853 and r8, r8, r9, lsl #2
\r
1854 and r10,r10,r9, lsl #2
\r
1855 sub r12,r10,r10,lsr #2 @ r12 = 3/4 pix_s 5
\r
1856 orr r8, r8, r8, lsl #14
\r
1857 add r8, r8, r12,lsl #16 @ r8 = pix_d 5, 6
\r
1858 and r12,lr, r7, lsr #15
\r
1859 ldrh r12,[r3, r12]
\r
1860 and r7, lr, r7, lsr #23
\r
1862 and r12,r12,r9, lsl #2
\r
1864 mov r10,r10, lsr #1
\r
1865 sub r12,r12,r12,lsr #2 @ r12 = 3/4 pix_s 6
\r
1866 orr r10,r10,r12,lsl #16
\r
1867 and r7, r7, r9, lsl #2
\r
1868 add r10,r10,r7, lsl #14 @ r10 = pix_d 7, 8
\r
1872 stmia r0!, {r4,r5,r6,r8,r10}
\r
1874 bne .fl_loop32scale_RGB555u
\r
1878 ldmfd sp!, {r4-r10,lr}
\r
1881 #endif /* UNALIGNED_DRAWLINEDEST */
\r
1884 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1887 .global blockcpy @ void *dst, void *src, size_t n
\r
1890 stmfd sp!, {r4,r5}
\r
1891 mov r2, r2, lsr #4
\r
1893 ldmia r1!, {r3-r5,r12}
\r
1895 stmia r0!, {r3-r5,r12}
\r
1897 ldmfd sp!, {r4,r5}
\r
1901 .global blockcpy_or @ void *dst, void *src, size_t n, int pat
\r
1904 stmfd sp!, {r4-r6}
\r
1905 orr r3, r3, r3, lsl #8
\r
1906 orr r3, r3, r3, lsl #16
\r
1907 mov r2, r2, lsr #4
\r
1909 ldmia r1!, {r4-r6,r12}
\r
1915 stmia r0!, {r4-r6,r12}
\r
1916 bne blockcpy_loop_or
\r
1917 ldmfd sp!, {r4-r6}
\r
1920 @ vim:filetype=armasm
\r