Mercurial > hg > Members > kono > nitros9-code
annotate level1/modules/kernel.asm @ 1287:10957d54bf16
Made all modules rev 0
| author | boisy |
|---|---|
| date | Sat, 30 Aug 2003 20:16:51 +0000 |
| parents | 607fcc81c5ae |
| children | bfb91dc51fb6 |
| rev | line source |
|---|---|
| 0 | 1 ******************************************************************** |
| 2 * OS9p1 - OS-9 Level One V2 P1 module | |
| 3 * | |
| 4 * $Id$ | |
| 5 * | |
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6 * This is how the memory map looks after the kernel has initialized: |
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607fcc81c5ae
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7 * |
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607fcc81c5ae
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8 * $0000----> ================================== |
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9 * | | |
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10 * | | |
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11 * $0020-$0111 | System Globals (D.FMBM-D.XNMI) | |
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12 * | | |
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13 * | | |
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607fcc81c5ae
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14 * $0200---->|==================================| |
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15 * | Free Memory Bitmap | |
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16 * $0200-$0221 | (1 bit = 256 byte page) | |
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17 * |----------------------------------| |
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18 * | System Dispatch Table | |
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19 * $0222-$0291 | (Room for 56 addresses) | |
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20 * |----------------------------------| |
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21 * $0292-$02FF | User Dispatch Table | |
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22 * | (Room for 56 addresses) | |
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607fcc81c5ae
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23 * $0300---->|==================================| |
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24 * | | |
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25 * | | |
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607fcc81c5ae
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26 * $0300-$03FF | Module Directory Entries | |
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27 * | (Room for 64 entries) | |
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28 * | | |
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29 * $0400---->|==================================| |
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30 * | | |
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31 * $0400-$04FF | System Stack | |
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32 * | | |
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33 * $0500---->|==================================| |
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34 * |
| 1287 | 35 * Edt/Rev YYYY/MM/DD Modified by |
| 36 * Comment | |
| 0 | 37 * ------------------------------------------------------------------ |
| 1287 | 38 * 14 1985/??/?? |
| 39 * From Tandy OS-9 Level One VR 02.00.00 | |
| 40 * | |
| 41 * 15 2002/07/21 Boisy G. Pitre | |
| 42 * Module validation consists only of module header parity check. | |
| 43 * CRC check is not done unless D.CRC is set to 1, which is NOT the | |
| 44 * default case. By default, D.CRC is set to 0, thus there is no | |
| 45 * CRC checking. Speeds up module loads quite a bit. The Init module | |
| 46 * has a bit in a compatibility byte that can turn on/off CRC checking | |
| 0 | 47 |
| 48 nam OS9 | |
| 49 ttl OS-9 Level One V2 P1 module | |
| 50 | |
| 51 ifp1 | |
| 52 use defsfile | |
| 53 use scfdefs | |
| 54 endc | |
| 55 | |
| 56 tylg set Systm+Objct | |
| 57 atrv set ReEnt+rev | |
| 1287 | 58 rev set $00 |
| 300 | 59 edition set 15 |
| 0 | 60 |
| 61 L0000 mod eom,name,tylg,atrv,OS9Cold,size | |
| 62 | |
| 63 size equ . | |
| 64 | |
| 65 name fcs /OS9/ | |
| 66 fcb edition | |
| 67 | |
| 68 fcc /CC/ | |
| 69 | |
| 70 InitNam fcs /INIT/ | |
| 71 | |
| 72 P2Nam fcs /OS9P2/ | |
| 73 | |
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74 VectCode bra SWI3Jmp $0100 |
| 0 | 75 nop |
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76 bra SWI2Jmp $0103 |
| 0 | 77 nop |
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1197
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parents:
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78 bra SWIJmp $0106 |
| 0 | 79 nop |
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1197
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boisy
parents:
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80 bra NMIJmp $0109 |
| 0 | 81 nop |
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1197
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boisy
parents:
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82 bra IRQJmp $010C |
| 0 | 83 nop |
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1197
607fcc81c5ae
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boisy
parents:
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diff
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84 bra FIRQJmp $010F |
| 0 | 85 |
| 86 SWI3Jmp jmp [>D.SWI3] | |
| 87 SWI2Jmp jmp [>D.SWI2] | |
| 88 SWIJmp jmp [>D.SWI] | |
| 89 NMIJmp jmp [>D.NMI] | |
| 90 IRQJmp jmp [>D.IRQ] | |
| 91 FIRQJmp jmp [>D.FIRQ] | |
| 92 VectCSz equ *-VectCode | |
| 93 | |
| 94 | |
| 95 SysTbl fcb F$Link | |
| 96 fdb FLink-*-2 | |
| 97 | |
| 98 fcb F$Fork | |
| 99 fdb FFork-*-2 | |
| 100 | |
| 101 fcb F$Chain | |
| 102 fdb FChain-*-2 | |
| 103 | |
| 104 fcb F$Chain+$80 | |
| 105 fdb SFChain-*-2 | |
| 106 | |
| 107 fcb F$PrsNam | |
| 108 fdb FPrsNam-*-2 | |
| 109 | |
| 110 fcb F$CmpNam | |
| 111 fdb FCmpNam-*-2 | |
| 112 | |
| 113 fcb F$SchBit | |
| 114 fdb FSchBit-*-2 | |
| 115 | |
| 116 fcb F$AllBit | |
| 117 fdb FAllBit-*-2 | |
| 118 | |
| 119 fcb F$DelBit | |
| 120 fdb FDelBit-*-2 | |
| 121 | |
| 122 fcb F$CRC | |
| 123 fdb FCRC-*-2 | |
| 124 | |
| 125 fcb F$SRqMem+$80 | |
| 126 fdb FSRqMem-*-2 | |
| 127 | |
| 128 fcb F$SRtMem+$80 | |
| 129 fdb FSRtMem-*-2 | |
| 130 | |
| 131 fcb F$AProc+$80 | |
| 132 fdb FAProc-*-2 | |
| 133 | |
| 134 fcb F$NProc+$80 | |
| 135 fdb FNProc-*-2 | |
| 136 | |
| 137 fcb F$VModul+$80 | |
| 138 fdb FVModul-*-2 | |
| 139 | |
| 140 fcb F$SSvc | |
| 141 fdb FSSvc-*-2 | |
| 142 | |
| 143 fcb $80 | |
| 144 | |
| 145 * | |
| 146 * OS-9 Genesis! | |
| 147 OS9Cold equ * | |
| 148 * clear out system globals from $0020-$0400 | |
| 149 ldx #D.FMBM | |
| 150 ldy #$400-D.FMBM | |
| 151 clra | |
| 152 clrb | |
| 153 L007F std ,x++ | |
| 154 leay -2,y | |
| 155 bne L007F | |
| 156 * set up system globals | |
| 157 inca | |
| 158 inca D = $200 | |
| 159 std <D.FMBM $200 = start of free memory bitmap | |
| 160 addb #$20 | |
| 161 std <D.FMBM+2 $220 = end of free memory bitmap | |
| 162 addb #$02 | |
| 163 std <D.SysDis $222 = addr of sys dispatch tbl | |
| 164 addb #$70 | |
| 296 | 165 std <D.UsrDis $292 = addr of usr dispatch tbl |
| 0 | 166 clrb |
| 167 inca D = $300 | |
| 168 std <D.ModDir $300 = mod dir start | |
| 169 stx <D.ModDir+2 X = $400 = mod dir end | |
| 170 leas >$0100,x S = $500 (system stack?) | |
| 171 | |
| 172 * Check for valid RAM starting at $400 | |
| 173 ChkRAM leay ,x | |
| 174 ldd ,y store org contents in D | |
| 175 ldx #$00FF | |
| 176 stx ,y write pattern to ,Y | |
| 177 cmpx ,y same as what we wrote? | |
| 178 bne L00C2 nope, not RAM here! | |
| 179 ldx #$FF00 try different pattern | |
| 180 stx ,y write it to ,Y | |
| 181 cmpx ,y same as what we wrote? | |
| 182 bne L00C2 nope, not RAM here! | |
| 183 std ,y else restore org contents | |
| 184 leax >$0100,y check top of next 256 block | |
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dd89c62ea2ca
os9.asm and oscode.asm now use BTStart symbolic from systype
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185 cmpx #BTStart stop short of boot track mem |
| 0 | 186 bcs ChkRAM |
| 187 leay ,x | |
| 188 * Here, Y = end of RAM | |
| 189 L00C2 leax ,y X = end of RAM | |
| 190 stx <D.MLIM save off memory limit | |
| 191 | |
| 192 * Copy vector code over to address $100 | |
| 193 pshs y,x | |
| 194 leax >VectCode,pcr | |
| 247 | 195 ldy #D.XSWI3 |
| 0 | 196 ldb #VectCSz |
| 197 L00D2 lda ,x+ | |
| 198 sta ,y+ | |
| 199 decb | |
| 200 bne L00D2 | |
| 201 puls y,x | |
| 202 * validate modules at top of RAM (kernel, etc.) | |
| 203 L00DB lbsr ValMod | |
| 204 bcs L00E6 | |
| 205 ldd M$Size,x | |
| 206 leax d,x go past module | |
| 207 bra L00EC | |
| 208 L00E6 cmpb #E$KwnMod | |
| 209 beq L00EE | |
| 210 leax 1,x | |
| 211 L00EC bne L00DB | |
| 212 | |
| 213 * copy vectors to system globals | |
| 214 L00EE leay >Vectors,pcr | |
| 215 leax >L0000,pcr | |
| 216 pshs x | |
| 217 ldx #D.SWI3 | |
| 218 L00FB ldd ,y++ | |
| 219 addd ,s | |
| 220 std ,x++ | |
| 221 cmpx #$0036 | |
| 222 bls L00FB | |
| 223 leas 2,s restore stack | |
| 224 | |
| 225 * fill in more system globals | |
| 226 leax >URtoSs,pcr | |
| 227 stx <D.URtoSs | |
| 228 leax >UsrIRQ,pcr | |
| 229 stx <D.UsrIRQ | |
| 230 leax >UsrSvc,pcr | |
| 231 stx <D.UsrSvc | |
| 232 leax >SysIRQ,pcr | |
| 233 stx <D.SysIRQ | |
| 234 stx <D.SvcIRQ | |
| 235 leax >SysSvc,pcr | |
| 236 stx <D.SysSvc | |
| 237 stx <D.SWI2 | |
| 238 leax >Poll,pcr | |
| 239 stx <D.Poll | |
| 240 leax >Clock,pcr | |
| 241 stx <D.Clock | |
| 242 stx <D.AltIRQ | |
| 243 | |
| 244 * install system calls | |
| 245 leay >SysTbl,pcr | |
| 246 lbsr InstSSvc | |
| 247 | |
| 248 * link to init module | |
| 249 lda #Systm+0 | |
| 250 leax >InitNam,pcr | |
| 251 os9 F$Link | |
| 252 lbcs OS9Cold | |
| 253 stu <D.Init | |
| 308 | 254 lda Feature1,u get feature byte 1 |
| 306 | 255 bita #CRCOn CRC on? |
| 256 beq GetMem branch if not (already cleared earlier) | |
| 257 inc <D.CRC else turn on CRC checking | |
| 258 GetMem ldd MaxMem+1,u | |
| 0 | 259 clrb |
| 260 cmpd <D.MLIM | |
| 261 bcc L0158 | |
| 262 std <D.MLIM | |
| 263 L0158 ldx <D.FMBM | |
| 264 ldb #$F8 | |
| 265 stb ,x | |
| 266 clra | |
| 267 ldb <D.MLIM | |
| 268 negb | |
| 269 tfr d,y | |
| 270 negb | |
| 271 lbsr L065A | |
| 272 | |
| 273 * jump into OS9p2 here | |
| 274 leax >P2Nam,pcr | |
| 275 lda #Systm+Objct | |
| 276 os9 F$Link | |
| 277 lbcs OS9Cold | |
| 278 jmp ,y | |
| 165 | 279 SWI3 pshs pc,x,b |
| 0 | 280 ldb #P$SWI3 |
| 281 bra L018C | |
| 165 | 282 SWI2 pshs pc,x,b |
| 0 | 283 ldb #P$SWI2 |
| 284 bra L018C | |
| 247 | 285 DUMMY rti |
| 165 | 286 SVCIRQ jmp [>D.SvcIRQ] |
| 287 SWI pshs pc,x,b | |
| 0 | 288 ldb #P$SWI |
| 289 L018C ldx >D.Proc | |
| 290 ldx b,x get SWI entry | |
| 291 stx 3,s put in PC on stack | |
| 292 puls pc,x,b | |
| 293 | |
| 294 UsrIRQ leay <L01B1,pcr | |
| 295 * transition from user to system state | |
| 296 URtoSs clra | |
| 297 tfr a,dp clear direct page | |
| 298 ldx <D.Proc | |
| 299 ldd <D.SysSvc | |
| 300 std <D.SWI2 | |
| 301 ldd <D.SysIRQ | |
| 302 std <D.SvcIRQ | |
| 303 leau ,s | |
| 304 stu P$SP,x | |
| 305 lda P$State,x | |
| 306 ora #SysState | |
| 307 sta P$State,x | |
| 308 jmp ,y | |
| 309 | |
| 310 L01B1 jsr [>D.Poll] | |
| 311 bcc L01BD | |
| 312 ldb ,s | |
| 313 orb #$10 | |
| 314 stb ,s | |
| 315 L01BD lbra L0255 | |
| 316 | |
| 317 SysIRQ clra | |
| 318 tfr a,dp | |
| 319 jsr [>D.Poll] | |
| 320 bcc L01CF | |
| 321 ldb ,s | |
| 322 orb #$10 | |
| 323 stb ,s | |
| 324 L01CF rti | |
| 325 Poll comb | |
| 326 rts | |
| 327 | |
| 328 Clock ldx <D.SProcQ | |
| 329 beq L01FD | |
| 330 lda P$State,x | |
| 331 bita #TimSleep | |
| 332 beq L01FD | |
| 333 ldu P$SP,x | |
| 334 ldd P$SP,u | |
| 335 subd #$0001 | |
| 336 std P$SP,u | |
| 337 bne L01FD | |
| 338 L01E7 ldu P$Queue,x | |
| 339 bsr L021A | |
| 340 leax ,u | |
| 341 beq L01FB | |
| 342 lda P$State,x | |
| 343 bita #TimSleep | |
| 344 beq L01FB | |
| 345 ldu P$SP,x | |
| 346 ldd P$SP,u | |
| 347 beq L01E7 | |
| 348 L01FB stx <D.SProcQ | |
| 349 L01FD dec <D.Slice | |
| 350 bne ClockRTI | |
| 351 lda <D.TSlice | |
| 352 sta <D.Slice | |
| 353 ldx <D.Proc | |
| 354 beq ClockRTI | |
| 355 lda P$State,x | |
| 356 ora #TimOut | |
| 357 sta P$State,x | |
| 358 bpl L0212 branch if not system state | |
| 359 ClockRTI rti | |
| 360 | |
| 361 L0212 leay >L0255,pcr | |
| 362 bra URtoSs | |
| 363 | |
| 364 * X = proc desc | |
| 365 FAProc ldx R$X,u | |
| 366 L021A pshs u,y | |
| 367 ldu #$003F | |
| 368 bra L0228 | |
| 369 L0221 ldb P$Age,u | |
| 370 incb | |
| 371 beq L0228 | |
| 372 stb P$Age,u | |
| 373 L0228 ldu P$Queue,u U = proc desc | |
| 374 bne L0221 | |
| 375 ldu #$003F | |
| 376 lda P$Prior,x | |
| 377 sta P$Age,x | |
| 378 orcc #IntMasks | |
| 379 L0235 leay ,u | |
| 380 ldu P$Queue,u | |
| 381 beq L023F | |
| 382 cmpa P$Age,u | |
| 383 bls L0235 | |
| 384 L023F stu P$Queue,x | |
| 385 stx P$Queue,y | |
| 386 clrb | |
| 387 puls pc,u,y | |
| 388 | |
| 389 UsrSvc leay <L024E,pcr | |
| 390 orcc #IntMasks | |
| 391 lbra URtoSs | |
| 392 | |
| 393 L024E andcc #^IntMasks | |
| 394 ldy <D.UsrDis | |
| 395 bsr L0278 | |
| 396 L0255 ldx <D.Proc get current proc desc | |
| 397 beq FNProc branch to FNProc if none | |
| 398 orcc #IntMasks | |
| 399 ldb P$State,x | |
| 400 andb #^SysState | |
| 401 stb P$State,x | |
| 402 bitb #TimOut | |
| 403 beq L02D1 | |
| 404 andb #^TimOut | |
| 405 stb P$State,x | |
| 406 bsr L021A | |
| 407 bra FNProc | |
| 408 | |
| 409 * system call entry | |
| 410 SysSvc clra | |
| 411 tfr a,dp set direct page to 0 | |
| 412 leau ,s | |
| 413 ldy <D.SysDis | |
| 414 bsr L0278 | |
| 415 rti | |
| 416 | |
| 417 L0278 pshs u | |
| 418 ldx R$PC,u point X to PC | |
| 419 ldb ,x+ get func code at X | |
| 420 stx R$PC,u restore updated PC | |
| 421 lslb multiply by 2 | |
| 422 bcc L0288 branch if user call | |
| 423 rorb | |
| 424 ldx -2,y | |
| 425 bra L0290 | |
| 426 L0288 cmpb #$6E | |
| 427 bcc L02A7 | |
| 428 ldx b,y X = addr of system call | |
| 429 beq L02A7 | |
| 430 L0290 jsr ,x jsr into system call | |
| 431 L0292 puls u | |
| 432 tfr cc,a | |
| 433 bcc FixCC branch if no error | |
| 434 stb R$B,u store error code | |
| 435 FixCC ldb R$CC,u get caller's CC | |
| 436 andb #^(Negative+Zero+TwosOvfl+Carry) | |
| 437 stb R$CC,u | |
| 438 anda #Negative+Zero+TwosOvfl+Carry | |
| 439 ora R$CC,u | |
| 440 sta R$CC,u | |
| 441 rts | |
| 442 L02A7 comb | |
| 443 ldb #E$UnkSvc | |
| 444 bra L0292 | |
| 445 | |
| 446 * no signal handler, exit with signal value as exit code | |
| 447 L02AC ldb P$State,x | |
| 448 orb #SysState | |
| 449 stb P$State,x | |
| 450 ldb <P$Signal,x | |
| 451 andcc #^(IntMasks) | |
| 452 os9 F$Exit | |
| 453 | |
| 454 FNProc clra | |
| 455 clrb | |
| 456 std <D.Proc | |
| 457 bra L02C2 | |
| 458 * execution goes here when there are no active processes | |
| 459 L02C0 cwai #^(IntMasks) | |
| 460 L02C2 orcc #IntMasks | |
| 461 ldx <D.AProcQ get next active process | |
| 462 beq L02C0 CWAI if none | |
| 463 ldd P$Queue,x get queue ptr | |
| 464 std <D.AProcQ store in Active Q | |
| 465 stx <D.Proc store in current process | |
| 466 lds P$SP,x get process' stack ptr | |
| 467 L02D1 ldb P$State,x get state | |
| 468 bmi L0308 branch if system state | |
| 469 bitb #Condem process condemned? | |
| 470 bne L02AC branch if so... | |
| 471 ldb <P$Signal,x get signal no | |
| 472 beq L02FF branch if none | |
| 473 decb decrement | |
| 474 beq L02FC branch if wake up | |
| 475 ldu <P$SigVec,x get signal handler addr | |
| 476 beq L02AC branch if none | |
| 477 ldy <P$SigDat,x get data addr | |
| 478 ldd $06,s | |
| 479 pshs u,y,b,a | |
| 480 ldu $0A,s | |
| 481 lda <P$Signal,x | |
| 482 ldb $09,s | |
| 483 tfr d,y | |
| 484 ldd $06,s | |
| 485 pshs u,y,b,a | |
| 486 clrb | |
| 487 L02FC stb <P$Signal,x | |
| 488 L02FF ldd <P$SWI2,x | |
| 489 std <D.SWI2 | |
| 490 ldd <D.UsrIRQ | |
| 491 std <D.SvcIRQ | |
| 492 L0308 rti | |
| 493 | |
| 494 FLink pshs u save caller regs | |
| 495 ldd R$A,u | |
| 496 ldx R$X,u | |
| 497 lbsr L0443 | |
| 498 bcc FLinkOK | |
| 499 ldb #E$MNF | |
| 500 bra L033D | |
| 501 * U = module dir entry | |
| 502 FLinkOK ldy ,u get module ptr | |
| 503 ldb M$Revs,y | |
| 504 bitb #ReEnt reentrant? | |
| 505 bne L032A branch if so | |
| 506 tst $02,u link count zero? | |
| 507 beq L032A yep, ok to link to nonreent | |
| 508 comb else module is busy | |
| 509 ldb #E$ModBsy | |
| 510 bra L033D | |
| 511 L032A inc $02,u increment link count | |
| 512 ldu ,s get caller regs from stack | |
| 513 stx R$X,u | |
| 514 sty R$U,u | |
| 515 ldd M$Type,y | |
| 516 std R$D,u | |
| 517 ldd M$IDSize,y | |
| 518 leax d,y | |
| 519 stx R$Y,u | |
| 520 L033D puls pc,u | |
| 521 | |
| 522 FVModul pshs u | |
| 523 ldx R$X,u | |
| 524 bsr ValMod | |
| 525 puls y | |
| 526 stu R$U,y | |
| 527 rts | |
| 528 * X = address of module to validate | |
| 529 ValMod bsr ChkMHCRC | |
| 530 bcs L039A | |
| 531 lda M$Type,x | |
| 532 pshs x,a | |
| 533 ldd M$Name,x | |
| 534 leax d,x X = addr of name in mod | |
| 535 puls a | |
| 536 lbsr L0443 | |
| 537 puls x | |
| 538 bcs L039B | |
| 539 ldb #E$KwnMod | |
| 540 cmpx ,u | |
| 541 beq L03A1 | |
| 542 lda M$Revs,x | |
| 543 anda #RevsMask | |
| 544 pshs a | |
| 545 ldy ,u | |
| 546 lda M$Revs,y | |
| 547 anda #RevsMask | |
| 548 cmpa ,s+ same revision as other mod? | |
| 549 bcc L03A1 | |
| 550 pshs y,x | |
| 551 ldb M$Size,u | |
| 552 bne L0395 | |
| 553 ldx ,u | |
| 554 cmpx <D.BTLO | |
| 555 bcc L0395 | |
| 556 ldd $02,x | |
| 557 addd #$00FF | |
| 558 tfr a,b | |
| 559 clra | |
| 560 tfr d,y | |
| 561 ldb ,u | |
| 562 ldx <D.FMBM | |
| 563 os9 F$DelBit | |
| 564 clr $02,u | |
| 565 L0395 puls y,x | |
| 566 L0397 stx ,u | |
| 567 clrb | |
| 568 L039A rts | |
| 569 L039B leay ,u | |
| 570 bne L0397 | |
| 571 ldb #E$DirFul | |
| 572 L03A1 coma | |
| 573 rts | |
| 574 | |
| 575 * check module header and CRC | |
| 576 * X = address of potential module | |
| 577 ChkMHCRC ldd ,x | |
| 578 cmpd #M$ID12 sync bytes? | |
| 579 bne L03B1 nope, not a module here | |
| 580 leay M$Parity,x | |
| 581 bsr ChkMHPar check header parity | |
| 582 bcc L03B5 branch if ok | |
| 583 L03B1 comb | |
| 584 ldb #E$BMID | |
| 585 rts | |
|
297
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586 |
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587 L03B5 |
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588 * Following 4 lines added to support no CRC checks - 2002/07/21 |
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589 lda <D.CRC is CRC checking on? |
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eda95fad0c31
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590 bne DoCRCCk branch if so |
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591 clrb |
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592 rts |
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593 |
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|
594 DoCRCCk pshs x |
| 0 | 595 ldy M$Size,x |
| 596 bsr ChkMCRC checkm module CRC | |
| 597 puls pc,x | |
| 598 * check module header parity | |
| 599 * Y = pointer to parity byte | |
| 600 ChkMHPar pshs y,x | |
| 601 clra | |
| 602 ChkM010 eora ,x+ | |
| 603 cmpx 2,s compare to addr of M$Parity | |
| 604 bls ChkM010 | |
| 605 cmpa #$FF | |
| 606 puls pc,y,x | |
| 607 * X = address of potential module | |
| 608 * Y = size of module | |
| 609 ChkMCRC ldd #$FFFF | |
| 610 pshs b,a | |
| 611 pshs b,a | |
| 612 leau 1,s | |
| 613 L03D4 lda ,x+ | |
| 614 bsr CRCAlgo | |
| 615 leay -1,y dec Y (size of module) | |
| 616 bne L03D4 continue | |
| 617 clr -1,u | |
| 618 lda ,u | |
| 619 cmpa #CRCCon1 | |
| 620 bne L03EC | |
| 621 ldd 1,u | |
| 622 cmpd #CRCCon23 | |
| 623 beq L03EF | |
| 624 L03EC comb | |
| 625 ldb #E$BMCRC | |
| 626 L03EF puls pc,y,x | |
| 627 | |
| 628 * F$CRC | |
| 629 FCRC ldx R$X,u | |
| 630 ldy R$Y,u | |
| 631 beq L0402 | |
| 632 ldu R$U,u | |
| 633 L03FA lda ,x+ | |
| 634 bsr CRCAlgo | |
| 635 leay -1,y | |
| 636 bne L03FA | |
| 637 L0402 clrb | |
| 638 rts | |
| 639 | |
| 640 CRCAlgo eora ,u | |
| 641 pshs a | |
| 642 ldd $01,u | |
| 643 std ,u | |
| 644 clra | |
| 645 ldb ,s | |
| 646 lslb | |
| 647 rola | |
| 648 eora 1,u | |
| 649 std 1,u | |
| 650 clrb | |
| 651 lda ,s | |
| 652 lsra | |
| 653 rorb | |
| 654 lsra | |
| 655 rorb | |
| 656 eora 1,u | |
| 657 eorb 2,u | |
| 658 std 1,u | |
| 659 lda ,s | |
| 660 lsla | |
| 661 eora ,s | |
| 662 sta ,s | |
| 663 lsla | |
| 664 lsla | |
| 665 eora ,s | |
| 666 sta ,s | |
| 667 lsla | |
| 668 lsla | |
| 669 lsla | |
| 670 lsla | |
| 671 eora ,s+ | |
| 672 bpl L0442 | |
| 673 ldd #$8021 | |
| 674 eora ,u | |
| 675 sta ,u | |
| 676 eorb 2,u | |
| 677 stb 2,u | |
| 678 L0442 rts | |
| 679 | |
| 680 L0443 ldu #$0000 | |
| 681 tfr a,b | |
| 682 anda #TypeMask | |
| 683 andb #LangMask | |
| 684 pshs u,y,x,b,a | |
| 685 bsr EatSpace | |
| 686 cmpa #PDELIM pathlist char? | |
| 687 beq L049C branch if so | |
| 688 lbsr L074D parse name | |
| 689 bcs L049D return if error | |
| 690 ldu <D.ModDir | |
| 691 L045B pshs u,y,b | |
| 692 ldu ,u | |
| 693 beq L048B | |
| 694 ldd $04,u | |
| 695 leay d,u | |
| 696 ldb ,s | |
| 697 lbsr L07AB | |
| 698 bcs L0493 | |
| 699 lda $05,s | |
| 700 beq L0476 | |
| 701 eora $06,u | |
| 702 anda #$F0 | |
| 703 bne L0493 | |
| 704 L0476 lda $06,s | |
| 705 beq L0480 | |
| 706 eora $06,u | |
| 707 anda #$0F | |
| 708 bne L0493 | |
| 709 L0480 puls u,x,b | |
| 710 stu $06,s | |
| 711 bsr EatSpace | |
| 712 stx $02,s | |
| 713 clra | |
| 714 bra L049D | |
| 715 L048B ldd $0B,s | |
| 716 bne L0493 | |
| 717 ldd $03,s | |
| 718 std $0B,s | |
| 719 L0493 puls u,y,b | |
| 720 leau $04,u | |
| 721 cmpu <D.ModDir+2 | |
| 722 bcs L045B | |
| 723 L049C comb | |
| 724 L049D puls pc,u,y,x,b,a | |
| 725 | |
| 726 EatSpace lda #C$SPAC | |
| 727 EatSpc10 cmpa ,x+ | |
| 728 beq EatSpc10 | |
| 729 lda ,-x | |
| 730 rts | |
| 731 | |
| 732 FFork ldx <D.PrcDBT | |
| 733 os9 F$All64 | |
| 734 bcs L0517 | |
| 735 ldx <D.Proc | |
| 736 pshs x save calling proc desc on stack | |
| 737 ldd P$User,x | |
| 738 std P$User,y | |
| 739 lda P$Prior,x | |
| 740 clrb | |
| 741 std P$Prior,y | |
| 742 ldb #SysState | |
| 743 stb P$State,y | |
| 744 sty <D.Proc | |
| 745 ldd <P$NIO,x | |
| 746 std <P$NIO,y | |
| 747 ldd <P$NIO+2,x | |
| 748 std <P$NIO+2,y | |
| 749 leax <P$DIO,x | |
| 750 leay <P$DIO,y | |
| 751 ldb #DefIOSiz | |
| 752 * copy I/O stuff from parent to child | |
| 753 L04D7 lda ,x+ | |
| 754 sta ,y+ | |
| 755 decb | |
| 756 bne L04D7 | |
| 757 * X/Y = address of path table in respective proc desc | |
| 758 * Dup stdin/stdout/stderr | |
| 759 ldb #$03 | |
| 760 L04E0 lda ,x+ | |
| 761 os9 I$Dup | |
| 762 bcc L04E8 | |
| 763 clra | |
| 764 L04E8 sta ,y+ | |
| 765 decb | |
| 766 bne L04E0 | |
| 767 bsr L0553 | |
| 768 bcs L050C | |
| 769 puls y get parent proc desc | |
| 770 sty <D.Proc | |
| 771 lda P$ID,x get ID of new process | |
| 772 sta R$A,u store in caller's A | |
| 773 ldb P$CID,y get child id of parent | |
| 774 sta P$CID,y store new proc in parent's CID | |
| 775 lda P$ID,y get ID of parent | |
| 776 std P$PID,x store in child proc desc | |
| 777 ldb P$State,x update state of child | |
| 778 andb #^SysState | |
| 779 stb P$State,x | |
| 780 os9 F$AProc insert child in active Q | |
| 781 rts | |
| 782 L050C pshs b | |
| 783 os9 F$Exit | |
| 784 comb | |
| 785 puls x,b | |
| 786 stx <D.Proc | |
| 787 rts | |
| 788 L0517 comb | |
| 789 ldb #E$PrcFul | |
| 790 rts | |
| 791 | |
| 792 FChain bsr L0543 | |
| 793 bcs L0531 | |
| 794 orcc #IntMasks | |
| 795 ldb $0D,x | |
| 796 andb #$7F | |
| 797 stb $0D,x | |
| 798 L0527 os9 F$AProc | |
| 799 os9 F$NProc | |
| 800 | |
| 801 SFChain bsr L0543 | |
| 802 bcc L0527 | |
| 803 L0531 pshs b | |
| 804 stb <P$Signal,x | |
| 805 ldb P$State,x | |
| 806 orb #Condem | |
| 807 stb P$State,x | |
| 808 ldb #$FF | |
| 809 stb P$Prior,x | |
| 810 comb | |
| 811 puls pc,b | |
| 812 L0543 pshs u | |
| 813 ldx <D.Proc | |
| 814 ldu <P$PModul,x | |
| 815 os9 F$UnLink | |
| 816 ldu ,s | |
| 817 bsr L0553 | |
| 818 puls pc,u | |
| 819 L0553 ldx <D.Proc | |
| 820 pshs u,x | |
| 821 ldd <D.UsrSvc | |
| 822 std <P$SWI,x | |
| 823 std <P$SWI2,x | |
| 824 std <P$SWI3,x | |
| 825 clra | |
| 826 clrb | |
| 827 sta <P$Signal,x | |
| 828 std <P$SigVec,x | |
| 829 lda R$A,u | |
| 830 ldx R$X,u | |
| 831 os9 F$Link | |
| 832 bcc L0578 | |
| 833 os9 F$Load | |
| 834 bcs L05E7 | |
| 835 L0578 ldy <D.Proc | |
| 836 stu <P$PModul,y | |
| 837 cmpa #Prgrm+Objct | |
| 838 beq L058B | |
| 839 cmpa #Systm+Objct | |
| 840 beq L058B | |
| 841 comb | |
| 842 ldb #E$NEMod | |
| 843 bra L05E7 | |
| 844 L058B leay ,u Y = addr of module | |
| 845 ldu 2,s get U off stack (caller regs) | |
| 846 stx R$X,u | |
| 847 lda R$B,u | |
| 848 clrb | |
| 849 cmpd M$Mem,y compare passed mem to module's | |
| 850 bcc L059B branch if less than | |
| 851 ldd M$Mem,y | |
| 852 L059B addd #$0000 | |
| 853 bne L05A0 | |
| 854 L05A0 os9 F$Mem | |
| 855 bcs L05E7 | |
| 856 subd #R$Size subtract registers | |
| 857 subd R$Y,u subtract parameter area | |
| 858 bcs L05E5 | |
| 859 ldx R$U,u get parameter area | |
| 860 ldd R$Y,u get parameter size | |
| 861 pshs b,a | |
| 862 beq L05BE | |
| 863 leax d,x point to end of param area | |
| 864 L05B6 lda ,-x get byte, dec X | |
| 865 sta ,-y save byte in data area, dec X | |
| 866 cmpx R$U,u at top of param area? | |
| 867 bhi L05B6 | |
| 868 * set up registers for return of F$Fork/F$Chain | |
| 869 L05BE ldx <D.Proc | |
| 870 sty -$08,y put in X on caller stack | |
| 871 leay -R$Size,y back up register size | |
| 872 sty P$SP,x | |
| 873 lda P$ADDR,x | |
| 874 clrb | |
| 875 std R$U,y lowest address | |
| 876 sta R$DP,y set direct page | |
| 877 adda P$PagCnt,x | |
| 878 std R$Y,y | |
| 879 puls b,a | |
| 880 std R$D,y size of param area | |
| 881 ldb #Entire | |
| 882 stb R$CC,y | |
| 883 ldu <P$PModul,x get addr of prim. mod | |
| 884 ldd M$Exec,u | |
| 885 leau d,u | |
| 886 stu R$PC,y put in PC on caller reg | |
| 887 clrb | |
| 888 L05E5 ldb #E$IForkP | |
| 889 L05E7 puls pc,u,x | |
| 890 | |
| 891 FSRqMem ldd R$D,u | |
| 892 addd #$00FF | |
| 893 clrb | |
| 894 std R$D,u | |
| 895 ldx <D.FMBM+2 | |
| 896 ldd #$01FF | |
| 897 pshs b,a | |
| 898 bra L0604 | |
| 899 L05FA dec $01,s | |
| 900 ldb $01,s | |
| 901 L05FE lsl ,s | |
| 902 bcc L060A | |
| 903 rol ,s | |
| 904 L0604 leax -1,x | |
| 905 cmpx <D.FMBM | |
| 906 bcs L0620 | |
| 907 L060A lda ,x | |
| 908 anda ,s | |
| 909 bne L05FA | |
| 910 dec 1,s | |
| 911 subb 1,s | |
| 912 cmpb 1,u | |
| 913 rora | |
| 914 addb 1,s | |
| 915 rola | |
| 916 bcs L05FE | |
| 917 ldb 1,s | |
| 918 clra | |
| 919 incb | |
| 920 L0620 leas 2,s | |
| 921 bcs L0635 | |
| 922 ldx <D.FMBM | |
| 923 tfr d,y | |
| 924 ldb 1,u | |
| 925 clra | |
| 926 exg d,y | |
| 927 bsr L065A | |
| 928 exg a,b | |
| 929 std 8,u | |
| 930 L0633 clra | |
| 931 rts | |
| 932 L0635 comb | |
| 933 ldb #E$MemFul | |
| 934 rts | |
| 935 | |
| 936 FSRtMem ldd R$D,u | |
| 937 addd #$00FF | |
| 938 tfr a,b | |
| 939 clra | |
| 940 tfr d,y | |
| 941 ldd R$U,u | |
| 942 beq L0633 | |
| 943 tstb | |
| 944 beq L064E | |
| 945 comb | |
| 946 ldb #E$BPAddr | |
| 947 rts | |
| 948 L064E exg a,b | |
| 949 ldx <D.FMBM | |
| 950 bra L06AD | |
| 951 | |
| 952 FAllBit ldd R$D,u | |
| 953 leau R$X,u | |
| 954 pulu y,x | |
| 955 L065A pshs y,x,b,a | |
| 956 bsr L0690 | |
| 957 tsta | |
| 958 pshs a | |
| 959 bmi L0671 | |
| 960 lda ,x | |
| 961 L0665 ora ,s | |
| 962 leay -1,y | |
| 963 beq L0689 | |
| 964 lsr ,s | |
| 965 bcc L0665 | |
| 966 sta ,x+ | |
| 967 L0671 tfr y,d | |
| 968 sta ,s | |
| 969 lda #$FF | |
| 970 bra L067B | |
| 971 L0679 sta ,x+ | |
| 972 L067B subb #$08 | |
| 973 bcc L0679 | |
| 974 dec ,s | |
| 975 bpl L0679 | |
| 976 L0683 lsla | |
| 977 incb | |
| 978 bne L0683 | |
| 979 ora ,x | |
| 980 L0689 sta ,x | |
| 981 clra | |
| 982 leas 1,s | |
| 983 puls pc,y,x,b,a | |
| 984 L0690 pshs b | |
| 985 lsra | |
| 986 rorb | |
| 987 lsra | |
| 988 rorb | |
| 989 lsra | |
| 990 rorb | |
| 991 leax d,x | |
| 992 puls b | |
| 993 lda #$80 | |
| 994 andb #$07 | |
| 995 beq L06A6 | |
| 996 L06A2 lsra | |
| 997 decb | |
| 998 bne L06A2 | |
| 999 L06A6 rts | |
| 1000 | |
| 1001 FDelBit ldd R$D,u | |
| 1002 leau R$X,u | |
| 1003 pulu y,x | |
| 1004 L06AD pshs y,x,b,a | |
| 1005 bsr L0690 | |
| 1006 coma | |
| 1007 pshs a | |
| 1008 bpl L06C4 | |
| 1009 lda ,x | |
| 1010 L06B8 anda ,s | |
| 1011 leay -1,y | |
| 1012 beq L06D8 | |
| 1013 asr ,s | |
| 1014 bcs L06B8 | |
| 1015 sta ,x+ | |
| 1016 L06C4 tfr y,d | |
| 1017 bra L06CA | |
| 1018 L06C8 clr ,x+ | |
| 1019 L06CA subd #$0008 | |
| 1020 bhi L06C8 | |
| 1021 beq L06D8 | |
| 1022 L06D1 lsla | |
| 1023 incb | |
| 1024 bne L06D1 | |
| 1025 coma | |
| 1026 anda ,x | |
| 1027 L06D8 sta ,x | |
| 1028 clr ,s+ | |
| 1029 puls pc,y,x,b,a | |
| 1030 | |
| 1031 FSchBit pshs u | |
| 1032 ldd R$D,u | |
| 1033 ldx R$X,u | |
| 1034 ldy R$Y,u | |
| 1035 ldu R$U,u | |
| 1036 bsr L06F3 | |
| 1037 puls u | |
| 1038 std R$D,u | |
| 1039 sty R$Y,u | |
| 1040 rts | |
| 1041 L06F3 pshs u,y,x,b,a | |
| 1042 pshs y,b,a | |
| 1043 clr 8,s | |
| 1044 clr 9,s | |
| 1045 tfr d,y | |
| 1046 bsr L0690 | |
| 1047 pshs a | |
| 1048 bra L0710 | |
| 1049 L0703 leay $01,y | |
| 1050 sty $05,s | |
| 1051 L0708 lsr ,s | |
| 1052 bcc L0714 | |
| 1053 ror ,s | |
| 1054 leax $01,x | |
| 1055 L0710 cmpx $0B,s | |
| 1056 bcc L0732 | |
| 1057 L0714 lda ,x | |
| 1058 anda ,s | |
| 1059 bne L0703 | |
| 1060 leay $01,y | |
| 1061 tfr y,d | |
| 1062 subd $05,s | |
| 1063 cmpd $03,s | |
| 1064 bcc L0739 | |
| 1065 cmpd $09,s | |
| 1066 bls L0708 | |
| 1067 std $09,s | |
| 1068 ldd $05,s | |
| 1069 std $01,s | |
| 1070 bra L0708 | |
| 1071 L0732 ldd $01,s | |
| 1072 std $05,s | |
| 1073 coma | |
| 1074 bra L073B | |
| 1075 L0739 std $09,s | |
| 1076 L073B leas $05,s | |
| 1077 puls pc,u,y,x,b,a | |
| 1078 | |
| 1079 FPrsNam ldx R$X,u | |
| 1080 bsr L074D | |
| 1081 std R$D,u | |
| 1082 bcs L0749 | |
| 1083 stx R$X,u | |
| 1084 L0749 sty R$Y,u | |
| 1085 rts | |
| 1086 L074D lda ,x | |
| 1087 cmpa #PDELIM pathlist char? | |
| 1088 bne L0755 branch if not | |
| 1089 leax 1,x go past pathlist char | |
| 1090 L0755 leay ,x | |
| 1091 clrb | |
| 1092 lda ,y+ | |
| 1093 anda #$7F | |
| 1094 bsr L0792 | |
| 1095 bcs L0772 | |
| 1096 L0760 incb | |
| 1097 lda -1,y | |
| 1098 bmi L076F hi bit set on this char, done | |
| 1099 lda ,y+ | |
| 1100 anda #$7F | |
| 1101 bsr IllChar | |
| 1102 bcc L0760 | |
| 1103 lda ,-y | |
| 1104 L076F andcc #^Carry | |
| 1105 rts | |
| 1106 L0772 cmpa #C$COMA comma? | |
| 1107 bne L0778 | |
| 1108 L0776 lda ,y+ | |
| 1109 L0778 cmpa #C$SPAC space? | |
| 1110 beq L0776 | |
| 1111 lda ,-y | |
| 1112 comb | |
| 1113 ldb #E$BNam | |
| 1114 rts | |
| 1115 | |
| 1116 * check for illegal characters in a pathlist | |
| 1117 IllChar cmpa #C$PERD period? | |
| 1118 beq L07C9 branch if so | |
| 1119 cmpa #'0 zero? | |
| 1120 bcs L07A2 branch if less than | |
| 1121 cmpa #'9 number? | |
| 1122 bls L07C9 branch if lower/same | |
| 1123 cmpa #'_ underscore? | |
| 1124 beq L07C9 branch if so | |
| 1125 L0792 cmpa #'A A? | |
| 1126 bcs L07A2 branch if less than | |
| 1127 cmpa #'Z Z? | |
| 1128 bls L07C9 branch if less or equal | |
| 1129 cmpa #'a a? | |
| 1130 bcs L07A2 branch if lower | |
| 1131 cmpa #'z z? | |
| 1132 bls L07C9 branch if less or equal | |
| 1133 L07A2 orcc #Carry | |
| 1134 rts | |
| 1135 | |
| 1136 FCmpNam ldb R$B,u | |
| 1137 leau R$X,u | |
| 1138 pulu y,x | |
| 1139 L07AB pshs y,x,b,a | |
| 1140 L07AD lda ,y+ | |
| 1141 bmi L07BE | |
| 1142 decb | |
| 1143 beq L07BA | |
| 1144 eora ,x+ | |
| 1145 anda #$DF | |
| 1146 beq L07AD | |
| 1147 L07BA orcc #Carry | |
| 1148 puls pc,y,x,b,a | |
| 1149 L07BE decb | |
| 1150 bne L07BA | |
| 1151 eora ,x | |
| 1152 anda #$5F | |
| 1153 bne L07BA | |
| 1154 puls y,x,b,a | |
| 1155 L07C9 andcc #^Carry | |
| 1156 rts | |
| 1157 | |
| 1158 FSSvc ldy R$Y,u | |
| 1159 bra InstSSvc | |
| 1160 SSvcLoop tfr b,a put syscall code in A | |
| 1161 anda #$7F kill hi bit | |
| 1162 cmpa #$7F is code $7F? | |
| 1163 beq SSvcOK | |
|
977
dd89c62ea2ca
os9.asm and oscode.asm now use BTStart symbolic from systype
boisy
parents:
308
diff
changeset
|
1164 cmpa #$37 compare against highest call allowed |
|
dd89c62ea2ca
os9.asm and oscode.asm now use BTStart symbolic from systype
boisy
parents:
308
diff
changeset
|
1165 bcs SSvcOK branch if A less than highest call |
| 0 | 1166 comb |
| 1167 ldb #E$ISWI | |
| 1168 rts | |
| 1169 SSvcOK lslb | |
| 1170 ldu <D.SysDis | |
| 1171 leau b,u U points to entry in table | |
| 1172 ldd ,y++ get addr of func | |
| 1173 leax d,y get absolute addr | |
| 1174 stx ,u store in system table | |
| 1175 bcs InstSSvc branch if system only | |
| 1176 stx <$70,u else store in user table too | |
| 1177 InstSSvc ldb ,y+ get system call code in B | |
| 1178 cmpb #$80 end of table? | |
| 1179 bne SSvcLoop branch if not | |
| 1180 rts | |
| 1181 | |
| 1182 emod | |
| 1183 eom equ * | |
| 1184 | |
| 165 | 1185 fdb Clock |
| 247 | 1186 Vectors fdb SWI3 SWI3 |
| 1187 fdb SWI2 SWI2 | |
| 1188 fdb DUMMY FIRQ | |
| 1189 fdb SVCIRQ IRQ | |
| 1190 fdb SWI SWI | |
| 1191 fdb DUMMY NMI | |
| 0 | 1192 |
| 1193 end | |
| 1194 |