1 @ vim:filetype=armasm
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3 @ assembly "optimized" version of some funtions from draw.c
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4 @ this is highly specialized, be careful if changing related C code!
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6 @ (c) Copyright 2007, Grazvydas "notaz" Ignotas
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7 @ All Rights Reserved
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16 .extern DrawLineDest
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17 .extern DrawStripInterlace
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21 .macro TilePixel pat lsrr offs
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25 ands r4, \pat, r2, lsr #\lsrr
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28 strneb r4, [r1,#\offs]
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31 @ TileNorm (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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33 TilePixel \pat, 12, 0 @ #0x0000f000
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34 TilePixel \pat, 8, 1 @ #0x00000f00
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35 TilePixel \pat, 4, 2 @ #0x000000f0
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36 TilePixel \pat, 0, 3 @ #0x0000000f
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37 TilePixel \pat, 28, 4 @ #0xf0000000
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38 TilePixel \pat, 24, 5 @ #0x0f000000
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39 TilePixel \pat, 20, 6 @ #0x00f00000
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40 TilePixel \pat, 16, 7 @ #0x000f0000
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43 @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, pat: register with helper pattern 0xf
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45 TilePixel \pat, 16, 0 @ #0x000f0000
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46 TilePixel \pat, 20, 1 @ #0x00f00000
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47 TilePixel \pat, 24, 2 @ #0x0f000000
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48 TilePixel \pat, 28, 3 @ #0xf0000000
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49 TilePixel \pat, 0, 4 @ #0x0000000f
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50 TilePixel \pat, 4, 5 @ #0x000000f0
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51 TilePixel \pat, 8, 6 @ #0x00000f00
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52 TilePixel \pat, 12, 7 @ #0x0000f000
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55 @ shadow/hilight mode
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57 @ this one is for hi priority layer
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58 .macro TilePixelShHP lsrr offs
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62 ands r4, r12, r2, lsr #\lsrr
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64 ldreqb r4, [r1,#\offs]
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66 strneb r4, [r1,#\offs]
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69 streqb r4, [r1,#\offs]
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72 @ TileNorm (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 @ TileFlip (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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162 strb r4, [r1,#\ofs]
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165 ldrb r4, [r1,#\ofs] @ 2ci
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167 strb r4, [r1,#\ofs]
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170 ldrb r4, [r1,#\ofs] @ 2ci
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173 strb r4, [r1,#\ofs]
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177 @ TileFlipSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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179 TileDoShGenPixel 16, 0 @ #0x000f0000
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180 TileDoShGenPixel 20, 1 @ #0x00f00000
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181 TileDoShGenPixel 24, 2 @ #0x0f000000
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182 TileDoShGenPixel 28, 3 @ #0xf0000000
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183 TileDoShGenPixel 0, 4 @ #0x0000000f
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184 TileDoShGenPixel 4, 5 @ #0x000000f0
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185 TileDoShGenPixel 8, 6 @ #0x00000f00
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186 TileDoShGenPixel 12, 7 @ #0x0000f000
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189 @ TileNormSh (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=sx, r12: register with helper pattern 0xf
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191 TileDoShGenPixel 12, 0 @ #0x0000f000
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192 TileDoShGenPixel 8, 1 @ #0x00000f00
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193 TileDoShGenPixel 4, 2 @ #0x000000f0
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194 TileDoShGenPixel 0, 3 @ #0x0000000f
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195 TileDoShGenPixel 28, 4 @ #0xf0000000
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196 TileDoShGenPixel 24, 5 @ #0x0f000000
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197 TileDoShGenPixel 20, 6 @ #0x00f00000
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198 TileDoShGenPixel 16, 7 @ #0x000f0000
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202 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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206 @ int nametab; // 0x00
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207 @ int line; // 0x04
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208 @ int hscroll; // 0x08
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209 @ int xmask; // 0x0C
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210 @ int *hc; // 0x10 (pointer to cache buffer)
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211 @ int cells; // 0x14
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214 @ int DrawLayer(int plane, int *hcache, int maxcells, int sh)
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216 .global DrawLayer @ int plane, int *hcache, int maxcells, int sh
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219 stmfd sp!, {r4-r11,lr}
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221 ldr r11, =(Pico+0x22228) @ Pico.video
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224 ldrb r7, [r11, #16] @ ??hh??ww
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226 mov r6, r1 @ hcache
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227 orr r9, r2, r3, lsl #31 @ r9=maxcells|(sh<<31)
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230 orr r1, r1, #0x00ff
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234 biclt r1, r1, #0xfc00
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235 biceq r1, r1, #0xfe00
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236 bicgt r1, r1, #0xff00 @ r1=ymask=(height<<8)|0xff; ...; // Y Mask in pixels
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240 subge r10, r10, #1 @ r10=shift[width] (5,6,6,7)
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243 mov r5, r8, lsl r10
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244 sub r5, r5, #1 @ r5=xmask
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248 ldreqb r12, [r11, #2]
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249 ldrneb r12, [r11, #4]
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251 ldr r2, =Scanline @ trying to make good use of pipeline here
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252 ldr lr, =(Pico+0x10000) @ lr=Pico.vram
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254 moveq r12, r12, lsl #10
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255 movne r12, r12, lsl #13
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256 and r12, r12, #(7<<13) @ r12=(ts->nametab<<1) (halfword compliant)
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258 ldrh r8, [r11, #12]
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259 ldrb r7, [r11, #11]
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262 mov r4, r8, lsr #8 @ pvid->reg[13]
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263 mov r4, r4, lsl #10 @ htab=pvid->reg[13]<<9; (halfwords)
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265 addne r4, r4, r2, lsl #2 @ htab+=Scanline<<1; // Offset by line
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267 biceq r4, r4, #0x1f @ htab&=~0xf; // Offset by tile
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268 add r4, r4, r0, lsl #1 @ htab+=plane
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269 bic r4, r4, #0x00ff0000 @ just in case
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270 ldrh r3, [lr, r4] @ r3=hscroll
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273 bne .DrawStrip_vsscroll
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275 @ Get vertical scroll value:
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276 add r7, lr, #0x012000
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277 add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
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282 bne .DrawStrip_interlace
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285 movne r7, r7, lsr #16
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287 @ Find the line in the name table
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291 add r10, r10, #1 @ shift[width]++
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292 add r12, r12, r4, lsl r10 @ nametab+=(ts.line>>3)<<shift[width];
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294 @ 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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297 mov r10,r10, lsl #1 @ r10=ty=(ts->line&7)<<1;
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298 orr r10,r10, r9, lsl #24
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301 mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
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305 add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1
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309 orrne r10,r10, #1<<23 @ r10=(cells<<24|sh<<23|hi_not_empty<<22|had_output<<21|ty)
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310 movne r3, #0x40 @ default to shadowed pal on sh mode
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312 mvn r9, #0 @ r9=prevcode=-1
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315 addne r10,r10, #0x01000000 @ we will loop cells+1 times if there is scroll
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317 @ cache some stuff to avoid mem access
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320 add r1, r11, r7 @ r1=pdest
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323 @ r4 & r7 are scratch in this loop
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326 .dsloop: @ 40-41 times
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327 subs r10,r10, #0x01000000
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332 add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
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333 ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
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339 bne .DrawStrip_hiprio
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342 beq .DrawStrip_samecode @ we know stuff about this tile already
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344 mov r9, r7 @ remember code
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345 orr r10, r10, #1<<21 @ seen non hi-prio tile
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347 movs r2, r9, lsl #20 @ if (code&0x1000)
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349 add r2, r2, r10, lsl #17
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350 mov r2, r2, lsr #17
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351 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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353 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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356 and r3, r9, #0x6000
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357 add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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359 .DrawStrip_samecode:
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361 beq .dsloop @ tileline blank
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364 beq .DrawStrip_SingleColor @ tileline singlecolor
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367 beq .DrawStrip_TileNorm
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369 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
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373 .DrawStrip_TileNorm:
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377 .DrawStrip_SingleColor:
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380 orr r4, r4, r4, lsl #8
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381 tst r1, #1 @ not aligned?
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382 strneb r4, [r1], #1
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383 streqh r4, [r1], #2
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387 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
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390 .DrawStrip_hiprio_maybempt:
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392 beq .dsloop @ must've been empty, otherwise we wouldn't get here
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393 movs r2, r7, lsl #20 @ if (code&0x1000)
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395 add r2, r2, r10, lsl #17
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396 mov r2, r2, lsr #17
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397 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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398 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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399 mov r9, r7 @ remember code
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402 orr r10, r10, #1<<22
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405 tst r10, #0x00c00000
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406 beq .DrawStrip_hiprio_maybempt
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408 orr r7, r7, r0, lsl #16
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409 orr r7, r7, r10, lsl #25 @ (ty<<25)
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411 eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;
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412 str r7, [r6], #4 @ cache hi priority tile
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417 tst r10, #1<<21 @ seen non hi-prio tile
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418 ldreq r1, =rendstatus
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421 str r0, [r6] @ terminate the cache list
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422 orreq r2, r2, #0x40 @ had a layer with all hi-prio tiles
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425 ldmfd sp!, {r4-r11,lr}
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428 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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430 .DrawStrip_vsscroll:
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432 mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
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433 bic r8, r8, #0xff000000
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434 orr r8, r8, r5, lsl #25 @ r8=(xmask[31:25]|had_output[24]|tilex[15:0])
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437 orr r5, r1, r10, lsl #24
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440 orr r5, r5, r4, lsl #16 @ r5=(shift_width[31:24]|scanline[23:16]|ymask[15:0])
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442 add r7, r1, #1 @ r7=dx=((ts->hscroll-1)&7)+1
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444 mov r10,r9, lsl #16
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446 orrne r10,r10, #0x8000
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449 orr r10,r10, #0xff000000 @ will be adjusted on entering loop
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450 orrne r10,r10, #1<<23 @ r10=(cells[31:24]|sh[23]|hi_not_empty[22]|cells_max[21:16]|plane[15]|ty[14:0])
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451 movne r3, #0x40 @ default to shadowed pal on sh mode
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453 mvn r9, #0 @ r9=prevcode=-1
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455 @ cache some stuff to avoid mem access
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458 add r1, r11, r7 @ r1=pdest
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461 subne r10,r10, #0x01000000 @ have hscroll, start with negative cell
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464 @ r4 & r7 are scratch in this loop
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467 .dsloop_vs: @ 40-41 times
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468 add r10,r10, #0x01000000
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469 and r4, r10, #0x003f0000
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470 cmp r4, r10, asr #8
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471 ble .dsloop_vs_exit
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473 @ calc offset and read tileline code to r7, also calc ty
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474 add r7, lr, #0x012000
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475 add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
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476 add r7, r7, r10,asr #23 @ vsram + ((cell&~1)<<1)
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478 tst r10,#0x8000 @ plane1?
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480 ldrh r7, [r7] @ r7=vscroll
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482 bic r10,r10,#0xff @ clear old ty
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483 and r4, r5, #0xff0000
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484 add r4, r4, r7, lsl #16
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485 and r4, r4, r5, lsl #16 @ r4=line<<16
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486 and r7, r4, #0x70000
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487 orr r10,r10,r7, lsr #15 @ new ty
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489 mov r4, r4, lsr #19
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490 mov r7, r5, lsr #24
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491 mov r4, r4, lsl r7 @ nametabadd
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493 and r7, r8, r8, lsr #25
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494 add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
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495 add r7, r7, r4, lsl #1
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496 ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
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502 bne .DrawStrip_vs_hiprio
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505 beq .DrawStrip_vs_samecode @ we know stuff about this tile already
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507 mov r9, r7 @ remember code
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508 orr r8, r8, #1<<24 @ seen non hi-prio tile
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510 movs r2, r9, lsl #20 @ if (code&0x1000)
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512 add r2, r2, r10, lsl #17
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513 mov r2, r2, lsr #17
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514 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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516 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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519 and r3, r9, #0x6000
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520 add r3, r7, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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522 .DrawStrip_vs_samecode:
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524 beq .dsloop_vs @ tileline blank
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527 beq .DrawStrip_vs_SingleColor @ tileline singlecolor
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530 beq .DrawStrip_vs_TileNorm
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532 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
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536 .DrawStrip_vs_TileNorm:
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540 .DrawStrip_vs_SingleColor:
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543 orr r4, r4, r4, lsl #8
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544 tst r1, #1 @ not aligned?
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545 strneb r4, [r1], #1
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546 streqh r4, [r1], #2
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550 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
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553 .DrawStrip_vs_hiprio:
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554 tst r10, #0x00c00000
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555 beq .DrawStrip_vs_hiprio_maybempt
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557 orr r7, r7, r0, lsl #16
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558 orr r7, r7, r10, lsl #25 @ (ty<<25)
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560 eorne r7, r7, #7<<26 @ if(code&0x1000) cval^=7<<26;
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561 str r7, [r6], #4 @ cache hi priority tile
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565 .DrawStrip_vs_hiprio_maybempt:
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567 beq .dsloop_vs @ must've been empty, otherwise we wouldn't get here
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568 movs r2, r7, lsl #20 @ if (code&0x1000)
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570 add r2, r2, r10, lsl #17
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571 mov r2, r2, lsr #17
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572 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
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573 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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574 mov r9, r7 @ remember code
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576 orrne r10, r10, #1<<22
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577 bne .DrawStrip_vs_hiprio
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581 tst r8, #1<<24 @ seen non hi-prio tile
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582 ldreq r1, =rendstatus
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585 str r0, [r6] @ terminate the cache list
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586 orreq r2, r2, #0x40 @ had a layer with all hi-prio tiles
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589 ldmfd sp!, {r4-r11,lr}
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593 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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595 @ interlace mode 2? Sonic 2?
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596 .DrawStrip_interlace:
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598 moveq r7, r7, lsl #21
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599 movne r7, r7, lsl #5
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601 @ Find the line in the name table
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602 add r2, r7, r2, lsl #22 @ r2=(vscroll+(Scanline<<1))<<21 (11 bits);
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603 orr r1, r1, #0x80000000
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604 and r2, r2, r1, ror #10 @ &((ymask<<1)|1)<<21;
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605 mov r2, r2, lsr #21
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607 mov r12, r12, lsr #1 @ halfwords
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608 add r0, r12, r4, lsl r10 @ nametab+=(ts.line>>4)<<shift[width];
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612 stmia sp, {r0,r2,r3,r5,r6,r9}
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615 bl DrawStripInterlace @ struct TileStrip *ts
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618 ldmfd sp!, {r4-r11,lr}
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623 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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626 .global BackFill @ int reg7, int sh
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629 stmfd sp!, {r4-r9,lr}
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631 ldr lr, =(HighCol+8)
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633 mov r0, r0, lsl #26
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634 mov r0, r0, lsr #26
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635 orr r0, r0, r1, lsl #6
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636 orr r0, r0, r0, lsl #8
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637 orr r0, r0, r0, lsl #16
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648 stmia lr!, {r0-r7} @ 10*8*4
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659 ldmfd sp!, {r4-r9,r12}
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663 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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666 .global DrawTilesFromCache @ int *hc, int sh
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668 DrawTilesFromCache:
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669 stmfd sp!, {r4-r8,r11,lr}
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671 @ cache some stuff to avoid mem access
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673 ldr lr, =(Pico+0x10000) @ lr=Pico.vram
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676 mvn r5, #0 @ r5=prevcode=-1
\r
678 bne .dtfc_check_rendflags
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682 ldr r6, [r0], #4 @ read code
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683 movs r1, r6, lsr #16 @ r1=dx;
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684 ldmeqfd sp!, {r4-r8,r11,pc} @ dx is never zero, this must be a terminator, return
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685 bic r1, r1, #0xfe00
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686 add r1, r11, r1 @ r1=pdest
\r
688 mov r7, r6, lsl #16
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689 cmp r5, r7, lsr #16
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690 beq .dtfc_samecode @ if (code==prevcode)
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692 mov r5, r7, lsr #16
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694 mov r2, r5, lsl #21
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695 mov r2, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4;
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696 add r2, r2, r6, lsr #25 @ addr+=ty
\r
698 and r3, r5, #0x6000
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699 mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
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701 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
711 beq .dtfc_SingleColor @ tileline singlecolor
\r
716 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
727 orr r4, r4, r4, lsl #8
\r
728 tst r1, #1 @ not aligned?
\r
729 strneb r4, [r1], #1
\r
730 streqh r4, [r1], #2
\r
734 strneb r4, [r1], #1 @ have a remaining unaligned pixel?
\r
739 beq .dtfc_shadow_blank
\r
742 beq .dtfc_SingleColor @ tileline singlecolor
\r
745 beq .dtfc_TileNormShHP
\r
747 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
751 .dtfc_TileNormShHP:
\r
755 .dtfc_shadow_blank:
\r
756 ldrb r4, [r1] @ 1ci
\r
763 andeq r12,r12,#0x3f
\r
771 andeq r12,r12,#0x3f
\r
779 andeq r12,r12,#0x3f
\r
786 andeq r12,r12,#0x3f
\r
791 @ check if we have detected layer covered with hi-prio tiles:
\r
792 .dtfc_check_rendflags:
\r
793 ldr r1, =rendstatus
\r
797 mov r8, #0 @ sh/hi mode off
\r
799 bne .dtfc_loop @ already processed
\r
806 orr r7, r7, r7, lsl #8
\r
807 orr r7, r7, r7, lsl #16
\r
809 orr r6, r6, r6, lsl #8
\r
810 orr r6, r6, r6, lsl #16
\r
813 bmi .dtfc_loop @ done
\r
818 beq .dtfc_loop_shprep
\r
819 tst r2, #0x80000000
\r
820 biceq r2, r2, #0xc0000000
\r
821 tst r2, #0x00800000
\r
822 biceq r2, r2, #0x00c00000
\r
823 tst r2, #0x00008000
\r
824 biceq r2, r2, #0x0000c000
\r
825 tst r2, #0x00000080
\r
826 biceq r2, r2, #0x000000c0
\r
828 b .dtfc_loop_shprep
\r
832 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
835 .global DrawSpritesFromCache @ int *hc, int sh
\r
837 DrawSpritesFromCache:
\r
838 stmfd sp!, {r4-r11,lr}
\r
840 @ cache some stuff to avoid mem access
\r
842 ldr lr, =(Pico+0x10000) @ lr=Pico.vram
\r
843 mov r6, r1, lsl #31
\r
850 ldr r9, [r10], #4 @ read code
\r
851 bic r6, r6, #7 @ using pipeline
\r
853 ldmeqfd sp!, {r4-r11,pc}
\r
855 mov r4, r9, lsl #28
\r
856 orr r6, r6, r4, lsr #30
\r
857 add r6, r6, #1 @ r6=s1cc???? ... ?????www (s=shadow/hilight, cc=pal, w=width)
\r
860 add r5, r5, #1 @ r5=delta
\r
862 rsbne r5, r5, #0 @ Flip X
\r
865 mov r2, r9, lsr #17
\r
866 mov r8, r2, lsl #1 @ tile=((unsigned int)code>>17)<<1;
\r
868 and r3, r9, #0x30 @ r3=pal=(code&0x30);
\r
871 orr r6, r6, r3, lsl #24
\r
873 mov r0, r9, lsl #16
\r
874 mov r0, r0, asr #22 @ sx=(code<<16)>>22
\r
875 adds r0, r0, #0 @ set ZV
\r
876 b .dsfc_inloop_enter
\r
886 .dsfc_inloop_enter:
\r
891 mov r8, r8, lsl #17
\r
892 mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address
\r
894 ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+tile); // Get 8 pixels
\r
895 add r1, r11, r0 @ r1=pdest
\r
899 cmp r12, r6, lsr #28
\r
903 beq .dsfc_SingleColor @ tileline singlecolor
\r
908 @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
917 tst r0, #1 @ not aligned?
\r
920 orr r4, r4, r4, lsl #8
\r
921 strneb r4, [r1], #1
\r
922 streqh r4, [r1], #2
\r
926 strneb r4, [r1], #1
\r
931 beq .dsfc_singlec_sh
\r
934 beq .dsfc_TileNorm_sh
\r
936 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
945 cmp r2, #0xe0000000
\r
946 bcc .dsfc_SingleColor @ normal singlecolor tileline (carry inverted in ARM)
\r
947 tst r2, #0x10000000
\r
958 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
960 @ + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
\r
961 @ + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
963 .global DrawSprite @ unsigned int *sprite, int **hc, int sh
\r
966 stmfd sp!, {r4-r9,r11,lr}
\r
968 ldr r3, [r0] @ sprite[0]
\r
970 mov r6, r3, lsr #28
\r
971 sub r6, r6, #1 @ r6=width-1 (inc later)
\r
972 mov r5, r3, lsr #24
\r
973 and r5, r5, #7 @ r5=height
\r
975 mov r4, r3, lsl #16 @ r4=sy<<16 (tmp)
\r
979 sub r7, r7, r4, asr #16 @ r7=row=Scanline-sy
\r
982 mov r2, r9, asr #16 @ r2=sx
\r
983 bic r9, r9, #0xfe000000
\r
984 orrne r9, r9, #1<<31 @ r9=code|(sh<<31)
\r
987 movne r4, r5, lsl #3
\r
989 subne r7, r4, r7 @ if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
991 mov r8, r9, lsl #21
\r
992 mov r8, r8, lsr #21
\r
993 add r8, r8, r7, lsr #3 @ tile+=row>>3; // Tile number increases going down
\r
996 mlane r8, r5, r6, r8 @ if (code&0x0800) { tile+=delta*(width-1);
\r
997 rsbne r5, r5, #0 @ delta=-delta; } // r5=delta now
\r
1001 add r8, r8, r7, lsl #1 @ tile+=(row&7)<<1; // Tile address
\r
1004 bne .dspr_cache @ if(code&0x8000) // high priority - cache it
\r
1006 @ cache some stuff to avoid mem access
\r
1008 ldr lr, =(Pico+0x10000) @ lr=Pico.vram
\r
1011 mov r5, r5, lsl #4 @ delta<<=4; // Delta of address
\r
1012 and r4, r9, #0x6000
\r
1013 orr r9, r9, r4, lsl #16
\r
1014 orr r9, r9, #0x10000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)
\r
1017 mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);
\r
1018 orrne r3, r3, #0x40 @ shadow by default
\r
1020 add r6, r6, #1 @ inc now
\r
1021 adds r0, r2, #0 @ mov sx to r0 and set ZV flags
\r
1022 b .dspr_loop_enter
\r
1025 subs r6, r6, #1 @ width--
\r
1026 ldmeqfd sp!, {r4-r9,r11,pc}@ return
\r
1027 adds r0, r0, #8 @ sx+=8
\r
1028 add r8, r8, r5 @ tile+=delta
\r
1031 ble .dspr_loop @ sx <= 0
\r
1033 ldmgefd sp!, {r4-r9,r11,pc}@ return
\r
1035 mov r8, r8, lsl #17
\r
1036 mov r8, r8, lsr #17 @ tile&=0x7fff; // Clip tile address
\r
1038 ldr r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1039 add r1, r11, r0 @ r1=pdest
\r
1043 cmp r12, r9, lsr #28
\r
1046 cmp r2, r2, ror #4
\r
1047 beq .dspr_SingleColor @ tileline singlecolor
\r
1050 beq .dspr_TileNorm
\r
1052 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1061 .dspr_SingleColor:
\r
1064 orr r4, r4, r4, lsl #8
\r
1065 tst r0, #1 @ not aligned?
\r
1066 strneb r4, [r1], #1
\r
1067 streqh r4, [r1], #2
\r
1071 strneb r4, [r1], #1
\r
1075 cmp r2, r2, ror #4
\r
1076 beq .dspr_singlec_sh
\r
1079 beq .dspr_TileNorm_sh
\r
1081 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r12: helper pattern
\r
1085 .dspr_TileNorm_sh:
\r
1090 cmp r2, #0xe0000000
\r
1091 bcc .dspr_SingleColor @ normal tileline
\r
1092 tst r2, #0x10000000
\r
1103 @ *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf);
\r
1104 mov r4, r8, lsl #16 @ tile
\r
1106 orrne r4, r4, #0x10000 @ code&0x0800
\r
1107 mov r2, r2, lsl #22
\r
1108 orr r4, r4, r2, lsr #16 @ (sx<<6)&0x0000ffc0
\r
1109 and r2, r9, #0x6000
\r
1110 orr r4, r4, r2, lsr #9 @ (code>>9)&0x30
\r
1111 mov r3, r3, lsl #12
\r
1113 orr r4, r4, r3, lsr #28 @ (sprite[0]>>24)&0xf
\r
1118 ldmfd sp!, {r4-r9,r11,lr}
\r
1121 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1123 .global DrawWindow @ int tstart, int tend, int prio, int sh // int *hcache
\r
1126 stmfd sp!, {r4-r11,lr}
\r
1128 ldr r11, =(Pico+0x22228) @ Pico.video
\r
1129 ldr r10, =Scanline
\r
1130 ldrb r12, [r11, #3] @ pvid->reg[3]
\r
1133 ldr r4, [r11, #12]
\r
1134 mov r5, r10, lsr #3
\r
1136 mov r10, r10, lsl #1 @ r10=ty
\r
1138 mov r12, r12, lsl #10
\r
1140 tst r4, #1 @ 40 cell mode?
\r
1141 andne r12, r12, #0xf000 @ 0x3c<<10
\r
1142 andeq r12, r12, #0xf800
\r
1143 addne r12, r12, r5, lsl #7
\r
1144 addeq r12, r12, r5, lsl #6 @ nametab
\r
1145 add r12, r12, r0, lsl #2 @ +starttile
\r
1147 ldr r6, =rendstatus
\r
1148 ldr lr, =(Pico+0x10000) @ lr=Pico.vram
\r
1151 @ fetch the first code now
\r
1152 ldrh r7, [lr, r12]
\r
1154 ands r6, r6, #2 @ we care about bit 1 only
\r
1156 bne .dw_no_sameprio
\r
1158 cmp r2, r7, lsr #15
\r
1159 ldmnefd sp!, {r4-r11,pc} @ assume that whole window uses same priority
\r
1162 orr r6, r6, r3, lsl #8 @ shadow mode
\r
1165 mov r8, r8, lsl #1 @ cells
\r
1167 mvn r9, #0 @ r9=prevcode=-1
\r
1169 @ cache some stuff to avoid mem access
\r
1170 ldr r11,=(HighCol+8)
\r
1171 add r1, r11, r0, lsl #4 @ r1=pdest
\r
1175 @ r4,r5 & r7 are scratch in this loop
\r
1179 add r12, r12, #2 @ halfwords
\r
1180 ldrh r7, [lr, r12] @ r7=code (int, but from unsigned, no sign extend)
\r
1182 beq .dwloop_end @ done
\r
1184 eor r5, r6, r7, lsr #15
\r
1186 orrne r6, r6, #2 @ wrong pri
\r
1190 beq .dw_samecode @ we know stuff about this tile already
\r
1193 mov r9, r7 @ remember code
\r
1195 movs r2, r9, lsl #20 @ if (code&0x1000)
\r
1196 mov r2, r2, lsl #1
\r
1197 add r2, r10, r2, lsr #17 @ r2=addr=(code&0x7ff)<<4; addr+=ty
\r
1198 eorcs r2, r2, #0x0e @ if (code&0x1000) addr^=0xe;
\r
1200 and r3, r9, #0x6000
\r
1201 mov r3, r3, lsr #9 @ r3=pal=((code&0x6000)>>9);
\r
1203 ldr r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
1210 beq .dwloop @ tileline blank
\r
1212 cmp r2, r2, ror #4
\r
1213 beq .dw_SingleColor @ tileline singlecolor
\r
1218 @ (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: helper pattern
\r
1227 and r4, r0, r2 @ #0x0000000f
\r
1229 orr r4, r4, r4, lsl #8
\r
1230 orr r4, r4, r4, lsl #16
\r
1232 stmia r1!, {r4,r5}
\r
1233 b .dwloop_nor1 @ we incremeted r1 ourselves
\r
1236 tst r6, #1 @ hi pri?
\r
1237 orreq r3, r3, #0x40
\r
1238 beq .dw_shadow_done
\r
1240 tst r4, #0x00000080
\r
1241 biceq r4, r4, #0x000000c0
\r
1242 tst r4, #0x00008000
\r
1243 biceq r4, r4, #0x0000c000
\r
1244 tst r4, #0x00800000
\r
1245 biceq r4, r4, #0x00c00000
\r
1246 tst r4, #0x80000000
\r
1247 biceq r4, r4, #0xc0000000
\r
1250 tst r4, #0x00000080
\r
1251 biceq r4, r4, #0x000000c0
\r
1252 tst r4, #0x00008000
\r
1253 biceq r4, r4, #0x0000c000
\r
1254 tst r4, #0x00800000
\r
1255 biceq r4, r4, #0x00c00000
\r
1256 tst r4, #0x80000000
\r
1257 biceq r4, r4, #0xc0000000
\r
1262 ldr r0, =rendstatus
\r
1268 ldmfd sp!, {r4-r11,r12}
\r
1272 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1275 @ hilights 2 pixels in RGB444/BGR444 format
\r
1276 .macro TileDoShHi2Pixels444 reg
\r
1277 mov \reg, \reg, ror #12
\r
1278 adds \reg, \reg, #0x40000000
\r
1279 orrcs \reg, \reg, #0xf0000000
\r
1280 mov \reg, \reg, ror #28
\r
1281 adds \reg, \reg, #0x40000000
\r
1282 orrcs \reg, \reg, #0xf0000000
\r
1283 mov \reg, \reg, ror #28
\r
1284 adds \reg, \reg, #0x40000000
\r
1285 orrcs \reg, \reg, #0xf0000000
\r
1286 mov \reg, \reg, ror #24
\r
1287 adds \reg, \reg, #0x40000000
\r
1288 orrcs \reg, \reg, #0xf0000000
\r
1289 mov \reg, \reg, ror #28
\r
1290 adds \reg, \reg, #0x40000000
\r
1291 orrcs \reg, \reg, #0xf0000000
\r
1292 mov \reg, \reg, ror #28
\r
1293 adds \reg, \reg, #0x40000000
\r
1294 orrcs \reg, \reg, #0xf0000000
\r
1295 mov \reg, \reg, ror #12
\r
1299 .global FinalizeLineBGR444 @ int sh
\r
1301 FinalizeLineBGR444:
\r
1302 stmfd sp!, {r4-r6,lr}
\r
1304 ldr lr, =(Pico+0x22228) @ Pico.video
\r
1305 ldr r0, =DrawLineDest
\r
1306 ldrb r12, [lr, #12]
\r
1308 sub r3, lr, #0x128 @ r3=Pico.cram
\r
1311 movne r2, #320/4 @ len
\r
1312 bne .fl_no32colBGR444
\r
1317 addeq r0, r0, #32*2
\r
1319 .fl_no32colBGR444:
\r
1321 beq .fl_noshBGR444
\r
1325 ldrb r12, [lr, #-0x1a] @ 0x2220e ~ dirtyPal
\r
1328 beq .fl_noshBGR444
\r
1330 strb r12, [lr, #-0x1a]
\r
1335 ldmia r3!, {r1,r5,r6,r12}
\r
1337 stmia r4!, {r1,r5,r6,r12}
\r
1338 bne .fl_loopcpBGR444
\r
1340 @ shadowed pixels:
\r
1342 orr r12,r12,#0x0700
\r
1343 orr r12,r12,r12,lsl #16
\r
1344 sub r3, r3, #0x40*2
\r
1345 add r5, r4, #0x80*2
\r
1347 .fl_loopcpBGR444_sh:
\r
1348 ldmia r3!, {r1,r6}
\r
1350 and r1, r12, r1, lsr #1
\r
1351 and r6, r12, r6, lsr #1
\r
1352 stmia r4!, {r1,r6}
\r
1353 stmia r5!, {r1,r6}
\r
1354 bne .fl_loopcpBGR444_sh
\r
1356 @ hilighted pixels:
\r
1357 sub r3, r3, #0x40*2
\r
1359 .fl_loopcpBGR444_hi:
\r
1361 TileDoShHi2Pixels444 r1
\r
1364 bne .fl_loopcpBGR444_hi
\r
1366 sub r3, r4, #0x40*3*2
\r
1370 ldr r1, =(HighCol+8)
\r
1372 mov lr, lr, lsl #1
\r
1379 and r4, lr, r12, lsl #1
\r
1381 and r5, lr, r12, lsr #7
\r
1383 and r6, lr, r12, lsr #15
\r
1385 orr r4, r4, r5, lsl #16
\r
1387 and r5, lr, r12, lsr #23
\r
1388 ldrh r5, [r3, r5] @ 2c.i.
\r
1389 orr r5, r6, r5, lsl #16
\r
1391 stmia r0!, {r4,r5}
\r
1392 bne .fl_loopBGR444
\r
1395 ldmfd sp!, {r4-r6,lr}
\r
1399 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1402 @ hilights 2 pixels in RGB555/BGR555 format
\r
1403 .macro TileDoShHi2Pixels555 reg
\r
1404 adds \reg, \reg, #0x40000000
\r
1405 orrcs \reg, \reg, #0xf0000000
\r
1406 mov \reg, \reg, ror #27
\r
1407 adds \reg, \reg, #0x40000000
\r
1408 orrcs \reg, \reg, #0xf0000000
\r
1409 mov \reg, \reg, ror #26
\r
1410 adds \reg, \reg, #0x40000000
\r
1411 orrcs \reg, \reg, #0xf0000000
\r
1412 mov \reg, \reg, ror #27
\r
1413 adds \reg, \reg, #0x40000000
\r
1414 orrcs \reg, \reg, #0xf0000000
\r
1415 mov \reg, \reg, ror #27
\r
1416 adds \reg, \reg, #0x40000000
\r
1417 orrcs \reg, \reg, #0xf0000000
\r
1418 mov \reg, \reg, ror #26
\r
1419 adds \reg, \reg, #0x40000000
\r
1420 orrcs \reg, \reg, #0xf0000000
\r
1421 mov \reg, \reg, ror #27
\r
1425 @ Convert 0000bbb0 ggg0rrr0
\r
1426 @ to rrrrrggg gggbbbbb
\r
1428 @ r2,r3,r9 - scratch, lr = 0x001c001c, r8 = 0x00030003
\r
1429 .macro convRGB565 reg
\r
1430 and r2, lr, \reg,lsl #1
\r
1431 and r9, r8, \reg,lsr #2
\r
1432 orr r2, r2, r9 @ r2=red
\r
1433 and r3, lr, \reg,lsr #7
\r
1434 and r9, r8, \reg,lsr #10
\r
1435 orr r3, r3, r9 @ r3=blue
\r
1436 and \reg, \reg, lr, lsl #3
\r
1437 orr \reg, \reg, \reg,lsl #3 @ green
\r
1438 orr \reg, \reg, r2, lsl #11 @ add red back
\r
1439 orr \reg, \reg, r3 @ add blue back
\r
1442 vidConvCpyRGB565: @ void *to, void *from, int pixels
\r
1443 stmfd sp!, {r4-r9,lr}
\r
1445 mov r12, r2, lsr #3 @ repeats
\r
1446 mov lr, #0x001c0000
\r
1447 orr lr, lr, #0x01c @ lr == pattern 0x001c001c
\r
1448 mov r8, #0x00030000
\r
1449 orr r8, r8, #0x003 @ lr == pattern 0x001c001c
\r
1452 ldmia r1!, {r4-r7}
\r
1465 ldmfd sp!, {r4-r9,lr}
\r
1470 .global FinalizeLineRGB555 @ int sh
\r
1472 FinalizeLineRGB555:
\r
1473 stmfd sp!, {r4-r8,lr}
\r
1474 ldr r8, =(Pico+0x22228) @ Pico.video
\r
1477 ldrb r7, [r8, #-0x1a] @ 0x2220e ~ dirtyPal
\r
1481 beq .fl_noconvRGB555
\r
1482 strb r1, [r8, #-0x1a]
\r
1483 sub r1, r8, #0x128 @ r1=Pico.cram
\r
1486 bl vidConvCpyRGB565
\r
1491 beq .fl_noshRGB555
\r
1493 beq .fl_noshRGB555
\r
1495 @ shadowed pixels:
\r
1497 orr r12,r12,#0x7300
\r
1498 orr r12,r12,r12,lsl #16
\r
1499 add r4, r3, #0x40*2
\r
1500 add r5, r3, #0xc0*2
\r
1502 .fl_loopcpRGB555_sh:
\r
1503 ldmia r3!, {r1,r6}
\r
1505 and r1, r12, r1, lsr #1
\r
1506 and r6, r12, r6, lsr #1
\r
1507 stmia r4!, {r1,r6}
\r
1508 stmia r5!, {r1,r6}
\r
1509 bne .fl_loopcpRGB555_sh
\r
1511 @ hilighted pixels:
\r
1512 sub r3, r3, #0x40*2
\r
1514 .fl_loopcpRGB555_hi:
\r
1516 TileDoShHi2Pixels555 r1
\r
1519 bne .fl_loopcpRGB555_hi
\r
1521 sub r3, r3, #0x40*2
\r
1524 ldr r0, =DrawLineDest
\r
1525 ldr r1, =(HighCol+8)
\r
1528 ldrb r12, [r8, #12]
\r
1530 mov lr, lr, lsl #1
\r
1533 movne r2, #320/8 @ len
\r
1534 bne .fl_no32colRGB555
\r
1539 bne .fl_32scale_RGB555
\r
1541 addeq r0, r0, #32*2
\r
1543 .fl_no32colRGB555:
\r
1549 and r4, lr, r12, lsl #1
\r
1551 and r5, lr, r12, lsr #7
\r
1553 and r6, lr, r12, lsr #15
\r
1555 orr r4, r4, r5, lsl #16
\r
1557 and r5, lr, r12, lsr #23
\r
1559 and r8, lr, r7, lsl #1
\r
1561 orr r5, r6, r5, lsl #16
\r
1563 and r6, lr, r7, lsr #7
\r
1565 and r12,lr, r7, lsr #15
\r
1566 ldrh r12,[r3, r12]
\r
1567 orr r8, r8, r6, lsl #16
\r
1569 and r6, lr, r7, lsr #23
\r
1570 ldrh r6, [r3, r6] @ 1 cycle interlock here (r6)
\r
1572 orr r12,r12, r6, lsl #16
\r
1574 stmia r0!, {r4,r5,r8,r12}
\r
1575 bne .fl_loopRGB555
\r
1577 ldmfd sp!, {r4-r8,lr}
\r
1581 .fl_32scale_RGB555:
\r
1582 stmfd sp!, {r9,r10}
\r
1583 mov r9, #0x3900 @ f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
\r
1584 orr r9, r9, #0x00e7
\r
1586 .fl_loop32scale_RGB555:
\r
1590 and r4, lr, r12,lsl #1
\r
1592 and r5, lr, r12,lsr #7
\r
1594 and r4, r4, r9, lsl #2
\r
1595 orr r4, r4, r4, lsl #14 @ r4[31:16] = 1/4 pix_s 0
\r
1596 and r5, r5, r9, lsl #2
\r
1597 sub r6, r5, r5, lsr #2 @ r6 = 3/4 pix_s 1
\r
1598 add r4, r4, r6, lsl #16 @ pix_d 0, 1
\r
1599 and r6, lr, r12,lsr #15
\r
1601 and r12,lr, r12,lsr #23
\r
1602 ldrh r12,[r3, r12]
\r
1603 and r6, r6, r9, lsl #2
\r
1605 mov r5, r5, lsr #1
\r
1606 sub r6, r6, r6, lsr #2 @ r6 = 3/4 pix_s 2
\r
1607 orr r5, r5, r6, lsl #16
\r
1609 and r6, lr, r7, lsl #1
\r
1611 and r12,r12,r9, lsl #2
\r
1612 add r5, r5, r12,lsl #14 @ pix_d 2, 3
\r
1613 and r6, r6, r9, lsl #2
\r
1614 orr r6, r12,r6, lsl #16 @ pix_d 4, 5
\r
1616 and r12,lr, r7, lsr #7
\r
1617 ldrh r12,[r3, r12]
\r
1618 and r10,lr, r7, lsr #15
\r
1619 ldrh r10,[r3, r10]
\r
1620 and r12,r12,r9, lsl #2
\r
1621 sub r8, r12,r12,lsr #2 @ r8 = 3/4 pix_s 1
\r
1622 add r8, r8, r6, lsr #18
\r
1623 and r7, lr, r7, lsr #23
\r
1625 and r10,r10,r9, lsl #2
\r
1626 orr r8, r8, r10,lsl #15
\r
1627 add r8, r8, r12,lsl #15 @ pix_d 6, 7
\r
1628 sub r10,r10,r10,lsr #2 @ r10= 3/4 pix_s 2
\r
1629 and r7, r7, r9, lsl #2
\r
1630 add r10,r10,r7, lsr #2 @ += 1/4 pix_s 3
\r
1631 orr r10,r10,r7, lsl #16 @ pix_d 8, 9
\r
1635 stmia r0!, {r4,r5,r6,r8,r10}
\r
1636 bne .fl_loop32scale_RGB555
\r
1638 ldmfd sp!, {r9,r10}
\r
1639 ldmfd sp!, {r4-r8,lr}
\r
1643 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\r
1646 .global blockcpy @ void *dst, void *src, size_t n
\r
1649 stmfd sp!, {r4,r5}
\r
1650 mov r2, r2, lsr #4
\r
1652 ldmia r1!, {r3-r5,r12}
\r
1654 stmia r0!, {r3-r5,r12}
\r
1656 ldmfd sp!, {r4,r5}
\r
1660 .global blockcpy_or @ void *dst, void *src, size_t n, int pat
\r
1663 stmfd sp!, {r4-r6}
\r
1664 orr r3, r3, r3, lsl #8
\r
1665 orr r3, r3, r3, lsl #16
\r
1666 mov r2, r2, lsr #4
\r
1668 ldmia r1!, {r4-r6,r12}
\r
1674 stmia r0!, {r4-r6,r12}
\r
1675 bne blockcpy_loop_or
\r
1676 ldmfd sp!, {r4-r6}
\r