Mercurial > hg > Members > kono > nitros9-code
annotate level1/modules/kernel.asm @ 300:e2ac8a38f22c
Changed module edition
| author | boisy |
|---|---|
| date | Mon, 22 Jul 2002 05:01:12 +0000 |
| parents | eda95fad0c31 |
| children | c863af5b4ea1 |
| rev | line source |
|---|---|
| 0 | 1 ******************************************************************** |
| 2 * OS9p1 - OS-9 Level One V2 P1 module | |
| 3 * | |
| 4 * $Id$ | |
| 5 * | |
| 6 * Ed. Comments Who YY/MM/DD | |
| 7 * ------------------------------------------------------------------ | |
| 201 | 8 * 14 From Tandy OS-9 Level One VR 02.00.00 |
| 300 | 9 * 15 Module validation consists only of module BGP 02/07/21 |
| 10 * header parity check. CRC check is not done | |
| 11 * unless D.CRC is set to 1, which is NOT the | |
| 12 * default case. By default, D.CRC is set | |
| 13 * to 0, thus there is no CRC checking. Speeds | |
| 14 * up module loads quite a bit. | |
| 0 | 15 |
| 16 | |
| 17 nam OS9 | |
| 18 ttl OS-9 Level One V2 P1 module | |
| 19 | |
| 20 ifp1 | |
| 21 use defsfile | |
| 22 use scfdefs | |
| 23 endc | |
| 24 | |
| 25 tylg set Systm+Objct | |
| 26 atrv set ReEnt+rev | |
| 27 rev set $01 | |
| 300 | 28 edition set 15 |
| 0 | 29 |
| 30 L0000 mod eom,name,tylg,atrv,OS9Cold,size | |
| 31 | |
| 32 size equ . | |
| 33 | |
| 34 name fcs /OS9/ | |
| 35 fcb edition | |
| 36 | |
| 37 fcc /CC/ | |
| 38 | |
| 39 InitNam fcs /INIT/ | |
| 40 | |
| 41 P2Nam fcs /OS9P2/ | |
| 42 | |
| 43 VectCode bra SWI3Jmp | |
| 44 nop | |
| 45 bra SWI2Jmp | |
| 46 nop | |
| 47 bra SWIJmp | |
| 48 nop | |
| 49 bra NMIJmp | |
| 50 nop | |
| 51 bra IRQJmp | |
| 52 nop | |
| 53 bra FIRQJmp | |
| 54 | |
| 55 SWI3Jmp jmp [>D.SWI3] | |
| 56 SWI2Jmp jmp [>D.SWI2] | |
| 57 SWIJmp jmp [>D.SWI] | |
| 58 NMIJmp jmp [>D.NMI] | |
| 59 IRQJmp jmp [>D.IRQ] | |
| 60 FIRQJmp jmp [>D.FIRQ] | |
| 61 VectCSz equ *-VectCode | |
| 62 | |
| 63 | |
| 64 SysTbl fcb F$Link | |
| 65 fdb FLink-*-2 | |
| 66 | |
| 67 fcb F$Fork | |
| 68 fdb FFork-*-2 | |
| 69 | |
| 70 fcb F$Chain | |
| 71 fdb FChain-*-2 | |
| 72 | |
| 73 fcb F$Chain+$80 | |
| 74 fdb SFChain-*-2 | |
| 75 | |
| 76 fcb F$PrsNam | |
| 77 fdb FPrsNam-*-2 | |
| 78 | |
| 79 fcb F$CmpNam | |
| 80 fdb FCmpNam-*-2 | |
| 81 | |
| 82 fcb F$SchBit | |
| 83 fdb FSchBit-*-2 | |
| 84 | |
| 85 fcb F$AllBit | |
| 86 fdb FAllBit-*-2 | |
| 87 | |
| 88 fcb F$DelBit | |
| 89 fdb FDelBit-*-2 | |
| 90 | |
| 91 fcb F$CRC | |
| 92 fdb FCRC-*-2 | |
| 93 | |
| 94 fcb F$SRqMem+$80 | |
| 95 fdb FSRqMem-*-2 | |
| 96 | |
| 97 fcb F$SRtMem+$80 | |
| 98 fdb FSRtMem-*-2 | |
| 99 | |
| 100 fcb F$AProc+$80 | |
| 101 fdb FAProc-*-2 | |
| 102 | |
| 103 fcb F$NProc+$80 | |
| 104 fdb FNProc-*-2 | |
| 105 | |
| 106 fcb F$VModul+$80 | |
| 107 fdb FVModul-*-2 | |
| 108 | |
| 109 fcb F$SSvc | |
| 110 fdb FSSvc-*-2 | |
| 111 | |
| 112 fcb $80 | |
| 113 | |
| 114 * | |
| 115 * OS-9 Genesis! | |
| 116 OS9Cold equ * | |
| 117 * clear out system globals from $0020-$0400 | |
| 118 ldx #D.FMBM | |
| 119 ldy #$400-D.FMBM | |
| 120 clra | |
| 121 clrb | |
| 122 L007F std ,x++ | |
| 123 leay -2,y | |
| 124 bne L007F | |
| 125 * set up system globals | |
| 126 inca | |
| 127 inca D = $200 | |
| 128 std <D.FMBM $200 = start of free memory bitmap | |
| 129 addb #$20 | |
| 130 std <D.FMBM+2 $220 = end of free memory bitmap | |
| 131 addb #$02 | |
| 132 std <D.SysDis $222 = addr of sys dispatch tbl | |
| 133 addb #$70 | |
| 296 | 134 std <D.UsrDis $292 = addr of usr dispatch tbl |
| 0 | 135 clrb |
| 136 inca D = $300 | |
| 137 std <D.ModDir $300 = mod dir start | |
| 138 stx <D.ModDir+2 X = $400 = mod dir end | |
| 139 leas >$0100,x S = $500 (system stack?) | |
| 140 | |
| 141 * Check for valid RAM starting at $400 | |
| 142 ChkRAM leay ,x | |
| 143 ldd ,y store org contents in D | |
| 144 ldx #$00FF | |
| 145 stx ,y write pattern to ,Y | |
| 146 cmpx ,y same as what we wrote? | |
| 147 bne L00C2 nope, not RAM here! | |
| 148 ldx #$FF00 try different pattern | |
| 149 stx ,y write it to ,Y | |
| 150 cmpx ,y same as what we wrote? | |
| 151 bne L00C2 nope, not RAM here! | |
| 152 std ,y else restore org contents | |
| 153 leax >$0100,y check top of next 256 block | |
| 154 cmpx #$EF00 stop short of boot track mem | |
| 155 bcs ChkRAM | |
| 156 leay ,x | |
| 157 * Here, Y = end of RAM | |
| 158 L00C2 leax ,y X = end of RAM | |
| 159 stx <D.MLIM save off memory limit | |
| 160 | |
| 161 * Copy vector code over to address $100 | |
| 162 pshs y,x | |
| 163 leax >VectCode,pcr | |
| 247 | 164 ldy #D.XSWI3 |
| 0 | 165 ldb #VectCSz |
| 166 L00D2 lda ,x+ | |
| 167 sta ,y+ | |
| 168 decb | |
| 169 bne L00D2 | |
| 170 puls y,x | |
| 171 * validate modules at top of RAM (kernel, etc.) | |
| 172 L00DB lbsr ValMod | |
| 173 bcs L00E6 | |
| 174 ldd M$Size,x | |
| 175 leax d,x go past module | |
| 176 bra L00EC | |
| 177 L00E6 cmpb #E$KwnMod | |
| 178 beq L00EE | |
| 179 leax 1,x | |
| 180 L00EC bne L00DB | |
| 181 | |
| 182 * copy vectors to system globals | |
| 183 L00EE leay >Vectors,pcr | |
| 184 leax >L0000,pcr | |
| 185 pshs x | |
| 186 ldx #D.SWI3 | |
| 187 L00FB ldd ,y++ | |
| 188 addd ,s | |
| 189 std ,x++ | |
| 190 cmpx #$0036 | |
| 191 bls L00FB | |
| 192 leas 2,s restore stack | |
| 193 | |
| 194 * fill in more system globals | |
| 195 leax >URtoSs,pcr | |
| 196 stx <D.URtoSs | |
| 197 leax >UsrIRQ,pcr | |
| 198 stx <D.UsrIRQ | |
| 199 leax >UsrSvc,pcr | |
| 200 stx <D.UsrSvc | |
| 201 leax >SysIRQ,pcr | |
| 202 stx <D.SysIRQ | |
| 203 stx <D.SvcIRQ | |
| 204 leax >SysSvc,pcr | |
| 205 stx <D.SysSvc | |
| 206 stx <D.SWI2 | |
| 207 leax >Poll,pcr | |
| 208 stx <D.Poll | |
| 209 leax >Clock,pcr | |
| 210 stx <D.Clock | |
| 211 stx <D.AltIRQ | |
| 212 | |
| 213 * install system calls | |
| 214 leay >SysTbl,pcr | |
| 215 lbsr InstSSvc | |
| 216 | |
| 217 * link to init module | |
| 218 lda #Systm+0 | |
| 219 leax >InitNam,pcr | |
| 220 os9 F$Link | |
| 221 lbcs OS9Cold | |
| 222 stu <D.Init | |
| 223 ldd MaxMem+1,u | |
| 224 clrb | |
| 225 cmpd <D.MLIM | |
| 226 bcc L0158 | |
| 227 std <D.MLIM | |
| 228 L0158 ldx <D.FMBM | |
| 229 ldb #$F8 | |
| 230 stb ,x | |
| 231 clra | |
| 232 ldb <D.MLIM | |
| 233 negb | |
| 234 tfr d,y | |
| 235 negb | |
| 236 lbsr L065A | |
| 237 | |
| 238 * jump into OS9p2 here | |
| 239 leax >P2Nam,pcr | |
| 240 lda #Systm+Objct | |
| 241 os9 F$Link | |
| 242 lbcs OS9Cold | |
| 243 jmp ,y | |
| 165 | 244 SWI3 pshs pc,x,b |
| 0 | 245 ldb #P$SWI3 |
| 246 bra L018C | |
| 165 | 247 SWI2 pshs pc,x,b |
| 0 | 248 ldb #P$SWI2 |
| 249 bra L018C | |
| 247 | 250 DUMMY rti |
| 165 | 251 SVCIRQ jmp [>D.SvcIRQ] |
| 252 SWI pshs pc,x,b | |
| 0 | 253 ldb #P$SWI |
| 254 L018C ldx >D.Proc | |
| 255 ldx b,x get SWI entry | |
| 256 stx 3,s put in PC on stack | |
| 257 puls pc,x,b | |
| 258 | |
| 259 UsrIRQ leay <L01B1,pcr | |
| 260 * transition from user to system state | |
| 261 URtoSs clra | |
| 262 tfr a,dp clear direct page | |
| 263 ldx <D.Proc | |
| 264 ldd <D.SysSvc | |
| 265 std <D.SWI2 | |
| 266 ldd <D.SysIRQ | |
| 267 std <D.SvcIRQ | |
| 268 leau ,s | |
| 269 stu P$SP,x | |
| 270 lda P$State,x | |
| 271 ora #SysState | |
| 272 sta P$State,x | |
| 273 jmp ,y | |
| 274 | |
| 275 L01B1 jsr [>D.Poll] | |
| 276 bcc L01BD | |
| 277 ldb ,s | |
| 278 orb #$10 | |
| 279 stb ,s | |
| 280 L01BD lbra L0255 | |
| 281 | |
| 282 SysIRQ clra | |
| 283 tfr a,dp | |
| 284 jsr [>D.Poll] | |
| 285 bcc L01CF | |
| 286 ldb ,s | |
| 287 orb #$10 | |
| 288 stb ,s | |
| 289 L01CF rti | |
| 290 Poll comb | |
| 291 rts | |
| 292 | |
| 293 Clock ldx <D.SProcQ | |
| 294 beq L01FD | |
| 295 lda P$State,x | |
| 296 bita #TimSleep | |
| 297 beq L01FD | |
| 298 ldu P$SP,x | |
| 299 ldd P$SP,u | |
| 300 subd #$0001 | |
| 301 std P$SP,u | |
| 302 bne L01FD | |
| 303 L01E7 ldu P$Queue,x | |
| 304 bsr L021A | |
| 305 leax ,u | |
| 306 beq L01FB | |
| 307 lda P$State,x | |
| 308 bita #TimSleep | |
| 309 beq L01FB | |
| 310 ldu P$SP,x | |
| 311 ldd P$SP,u | |
| 312 beq L01E7 | |
| 313 L01FB stx <D.SProcQ | |
| 314 L01FD dec <D.Slice | |
| 315 bne ClockRTI | |
| 316 lda <D.TSlice | |
| 317 sta <D.Slice | |
| 318 ldx <D.Proc | |
| 319 beq ClockRTI | |
| 320 lda P$State,x | |
| 321 ora #TimOut | |
| 322 sta P$State,x | |
| 323 bpl L0212 branch if not system state | |
| 324 ClockRTI rti | |
| 325 | |
| 326 L0212 leay >L0255,pcr | |
| 327 bra URtoSs | |
| 328 | |
| 329 * X = proc desc | |
| 330 FAProc ldx R$X,u | |
| 331 L021A pshs u,y | |
| 332 ldu #$003F | |
| 333 bra L0228 | |
| 334 L0221 ldb P$Age,u | |
| 335 incb | |
| 336 beq L0228 | |
| 337 stb P$Age,u | |
| 338 L0228 ldu P$Queue,u U = proc desc | |
| 339 bne L0221 | |
| 340 ldu #$003F | |
| 341 lda P$Prior,x | |
| 342 sta P$Age,x | |
| 343 orcc #IntMasks | |
| 344 L0235 leay ,u | |
| 345 ldu P$Queue,u | |
| 346 beq L023F | |
| 347 cmpa P$Age,u | |
| 348 bls L0235 | |
| 349 L023F stu P$Queue,x | |
| 350 stx P$Queue,y | |
| 351 clrb | |
| 352 puls pc,u,y | |
| 353 | |
| 354 UsrSvc leay <L024E,pcr | |
| 355 orcc #IntMasks | |
| 356 lbra URtoSs | |
| 357 | |
| 358 L024E andcc #^IntMasks | |
| 359 ldy <D.UsrDis | |
| 360 bsr L0278 | |
| 361 L0255 ldx <D.Proc get current proc desc | |
| 362 beq FNProc branch to FNProc if none | |
| 363 orcc #IntMasks | |
| 364 ldb P$State,x | |
| 365 andb #^SysState | |
| 366 stb P$State,x | |
| 367 bitb #TimOut | |
| 368 beq L02D1 | |
| 369 andb #^TimOut | |
| 370 stb P$State,x | |
| 371 bsr L021A | |
| 372 bra FNProc | |
| 373 | |
| 374 * system call entry | |
| 375 SysSvc clra | |
| 376 tfr a,dp set direct page to 0 | |
| 377 leau ,s | |
| 378 ldy <D.SysDis | |
| 379 bsr L0278 | |
| 380 rti | |
| 381 | |
| 382 L0278 pshs u | |
| 383 ldx R$PC,u point X to PC | |
| 384 ldb ,x+ get func code at X | |
| 385 stx R$PC,u restore updated PC | |
| 386 lslb multiply by 2 | |
| 387 bcc L0288 branch if user call | |
| 388 rorb | |
| 389 ldx -2,y | |
| 390 bra L0290 | |
| 391 L0288 cmpb #$6E | |
| 392 bcc L02A7 | |
| 393 ldx b,y X = addr of system call | |
| 394 beq L02A7 | |
| 395 L0290 jsr ,x jsr into system call | |
| 396 L0292 puls u | |
| 397 tfr cc,a | |
| 398 bcc FixCC branch if no error | |
| 399 stb R$B,u store error code | |
| 400 FixCC ldb R$CC,u get caller's CC | |
| 401 andb #^(Negative+Zero+TwosOvfl+Carry) | |
| 402 stb R$CC,u | |
| 403 anda #Negative+Zero+TwosOvfl+Carry | |
| 404 ora R$CC,u | |
| 405 sta R$CC,u | |
| 406 rts | |
| 407 L02A7 comb | |
| 408 ldb #E$UnkSvc | |
| 409 bra L0292 | |
| 410 | |
| 411 * no signal handler, exit with signal value as exit code | |
| 412 L02AC ldb P$State,x | |
| 413 orb #SysState | |
| 414 stb P$State,x | |
| 415 ldb <P$Signal,x | |
| 416 andcc #^(IntMasks) | |
| 417 os9 F$Exit | |
| 418 | |
| 419 FNProc clra | |
| 420 clrb | |
| 421 std <D.Proc | |
| 422 bra L02C2 | |
| 423 * execution goes here when there are no active processes | |
| 424 L02C0 cwai #^(IntMasks) | |
| 425 L02C2 orcc #IntMasks | |
| 426 ldx <D.AProcQ get next active process | |
| 427 beq L02C0 CWAI if none | |
| 428 ldd P$Queue,x get queue ptr | |
| 429 std <D.AProcQ store in Active Q | |
| 430 stx <D.Proc store in current process | |
| 431 lds P$SP,x get process' stack ptr | |
| 432 L02D1 ldb P$State,x get state | |
| 433 bmi L0308 branch if system state | |
| 434 bitb #Condem process condemned? | |
| 435 bne L02AC branch if so... | |
| 436 ldb <P$Signal,x get signal no | |
| 437 beq L02FF branch if none | |
| 438 decb decrement | |
| 439 beq L02FC branch if wake up | |
| 440 ldu <P$SigVec,x get signal handler addr | |
| 441 beq L02AC branch if none | |
| 442 ldy <P$SigDat,x get data addr | |
| 443 ldd $06,s | |
| 444 pshs u,y,b,a | |
| 445 ldu $0A,s | |
| 446 lda <P$Signal,x | |
| 447 ldb $09,s | |
| 448 tfr d,y | |
| 449 ldd $06,s | |
| 450 pshs u,y,b,a | |
| 451 clrb | |
| 452 L02FC stb <P$Signal,x | |
| 453 L02FF ldd <P$SWI2,x | |
| 454 std <D.SWI2 | |
| 455 ldd <D.UsrIRQ | |
| 456 std <D.SvcIRQ | |
| 457 L0308 rti | |
| 458 | |
| 459 FLink pshs u save caller regs | |
| 460 ldd R$A,u | |
| 461 ldx R$X,u | |
| 462 lbsr L0443 | |
| 463 bcc FLinkOK | |
| 464 ldb #E$MNF | |
| 465 bra L033D | |
| 466 * U = module dir entry | |
| 467 FLinkOK ldy ,u get module ptr | |
| 468 ldb M$Revs,y | |
| 469 bitb #ReEnt reentrant? | |
| 470 bne L032A branch if so | |
| 471 tst $02,u link count zero? | |
| 472 beq L032A yep, ok to link to nonreent | |
| 473 comb else module is busy | |
| 474 ldb #E$ModBsy | |
| 475 bra L033D | |
| 476 L032A inc $02,u increment link count | |
| 477 ldu ,s get caller regs from stack | |
| 478 stx R$X,u | |
| 479 sty R$U,u | |
| 480 ldd M$Type,y | |
| 481 std R$D,u | |
| 482 ldd M$IDSize,y | |
| 483 leax d,y | |
| 484 stx R$Y,u | |
| 485 L033D puls pc,u | |
| 486 | |
| 487 FVModul pshs u | |
| 488 ldx R$X,u | |
| 489 bsr ValMod | |
| 490 puls y | |
| 491 stu R$U,y | |
| 492 rts | |
| 493 * X = address of module to validate | |
| 494 ValMod bsr ChkMHCRC | |
| 495 bcs L039A | |
| 496 lda M$Type,x | |
| 497 pshs x,a | |
| 498 ldd M$Name,x | |
| 499 leax d,x X = addr of name in mod | |
| 500 puls a | |
| 501 lbsr L0443 | |
| 502 puls x | |
| 503 bcs L039B | |
| 504 ldb #E$KwnMod | |
| 505 cmpx ,u | |
| 506 beq L03A1 | |
| 507 lda M$Revs,x | |
| 508 anda #RevsMask | |
| 509 pshs a | |
| 510 ldy ,u | |
| 511 lda M$Revs,y | |
| 512 anda #RevsMask | |
| 513 cmpa ,s+ same revision as other mod? | |
| 514 bcc L03A1 | |
| 515 pshs y,x | |
| 516 ldb M$Size,u | |
| 517 bne L0395 | |
| 518 ldx ,u | |
| 519 cmpx <D.BTLO | |
| 520 bcc L0395 | |
| 521 ldd $02,x | |
| 522 addd #$00FF | |
| 523 tfr a,b | |
| 524 clra | |
| 525 tfr d,y | |
| 526 ldb ,u | |
| 527 ldx <D.FMBM | |
| 528 os9 F$DelBit | |
| 529 clr $02,u | |
| 530 L0395 puls y,x | |
| 531 L0397 stx ,u | |
| 532 clrb | |
| 533 L039A rts | |
| 534 L039B leay ,u | |
| 535 bne L0397 | |
| 536 ldb #E$DirFul | |
| 537 L03A1 coma | |
| 538 rts | |
| 539 | |
| 540 * check module header and CRC | |
| 541 * X = address of potential module | |
| 542 ChkMHCRC ldd ,x | |
| 543 cmpd #M$ID12 sync bytes? | |
| 544 bne L03B1 nope, not a module here | |
| 545 leay M$Parity,x | |
| 546 bsr ChkMHPar check header parity | |
| 547 bcc L03B5 branch if ok | |
| 548 L03B1 comb | |
| 549 ldb #E$BMID | |
| 550 rts | |
|
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551 |
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552 L03B5 |
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553 * Following 4 lines added to support no CRC checks - 2002/07/21 |
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Added check for D.CRC switch to prevent CRC checking (off by default)
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554 lda <D.CRC is CRC checking on? |
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555 bne DoCRCCk branch if so |
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Added check for D.CRC switch to prevent CRC checking (off by default)
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556 clrb |
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557 rts |
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558 |
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Added check for D.CRC switch to prevent CRC checking (off by default)
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559 DoCRCCk pshs x |
| 0 | 560 ldy M$Size,x |
| 561 bsr ChkMCRC checkm module CRC | |
| 562 puls pc,x | |
| 563 * check module header parity | |
| 564 * Y = pointer to parity byte | |
| 565 ChkMHPar pshs y,x | |
| 566 clra | |
| 567 ChkM010 eora ,x+ | |
| 568 cmpx 2,s compare to addr of M$Parity | |
| 569 bls ChkM010 | |
| 570 cmpa #$FF | |
| 571 puls pc,y,x | |
| 572 * X = address of potential module | |
| 573 * Y = size of module | |
| 574 ChkMCRC ldd #$FFFF | |
| 575 pshs b,a | |
| 576 pshs b,a | |
| 577 leau 1,s | |
| 578 L03D4 lda ,x+ | |
| 579 bsr CRCAlgo | |
| 580 leay -1,y dec Y (size of module) | |
| 581 bne L03D4 continue | |
| 582 clr -1,u | |
| 583 lda ,u | |
| 584 cmpa #CRCCon1 | |
| 585 bne L03EC | |
| 586 ldd 1,u | |
| 587 cmpd #CRCCon23 | |
| 588 beq L03EF | |
| 589 L03EC comb | |
| 590 ldb #E$BMCRC | |
| 591 L03EF puls pc,y,x | |
| 592 | |
| 593 * F$CRC | |
| 594 FCRC ldx R$X,u | |
| 595 ldy R$Y,u | |
| 596 beq L0402 | |
| 597 ldu R$U,u | |
| 598 L03FA lda ,x+ | |
| 599 bsr CRCAlgo | |
| 600 leay -1,y | |
| 601 bne L03FA | |
| 602 L0402 clrb | |
| 603 rts | |
| 604 | |
| 605 CRCAlgo eora ,u | |
| 606 pshs a | |
| 607 ldd $01,u | |
| 608 std ,u | |
| 609 clra | |
| 610 ldb ,s | |
| 611 lslb | |
| 612 rola | |
| 613 eora 1,u | |
| 614 std 1,u | |
| 615 clrb | |
| 616 lda ,s | |
| 617 lsra | |
| 618 rorb | |
| 619 lsra | |
| 620 rorb | |
| 621 eora 1,u | |
| 622 eorb 2,u | |
| 623 std 1,u | |
| 624 lda ,s | |
| 625 lsla | |
| 626 eora ,s | |
| 627 sta ,s | |
| 628 lsla | |
| 629 lsla | |
| 630 eora ,s | |
| 631 sta ,s | |
| 632 lsla | |
| 633 lsla | |
| 634 lsla | |
| 635 lsla | |
| 636 eora ,s+ | |
| 637 bpl L0442 | |
| 638 ldd #$8021 | |
| 639 eora ,u | |
| 640 sta ,u | |
| 641 eorb 2,u | |
| 642 stb 2,u | |
| 643 L0442 rts | |
| 644 | |
| 645 L0443 ldu #$0000 | |
| 646 tfr a,b | |
| 647 anda #TypeMask | |
| 648 andb #LangMask | |
| 649 pshs u,y,x,b,a | |
| 650 bsr EatSpace | |
| 651 cmpa #PDELIM pathlist char? | |
| 652 beq L049C branch if so | |
| 653 lbsr L074D parse name | |
| 654 bcs L049D return if error | |
| 655 ldu <D.ModDir | |
| 656 L045B pshs u,y,b | |
| 657 ldu ,u | |
| 658 beq L048B | |
| 659 ldd $04,u | |
| 660 leay d,u | |
| 661 ldb ,s | |
| 662 lbsr L07AB | |
| 663 bcs L0493 | |
| 664 lda $05,s | |
| 665 beq L0476 | |
| 666 eora $06,u | |
| 667 anda #$F0 | |
| 668 bne L0493 | |
| 669 L0476 lda $06,s | |
| 670 beq L0480 | |
| 671 eora $06,u | |
| 672 anda #$0F | |
| 673 bne L0493 | |
| 674 L0480 puls u,x,b | |
| 675 stu $06,s | |
| 676 bsr EatSpace | |
| 677 stx $02,s | |
| 678 clra | |
| 679 bra L049D | |
| 680 L048B ldd $0B,s | |
| 681 bne L0493 | |
| 682 ldd $03,s | |
| 683 std $0B,s | |
| 684 L0493 puls u,y,b | |
| 685 leau $04,u | |
| 686 cmpu <D.ModDir+2 | |
| 687 bcs L045B | |
| 688 L049C comb | |
| 689 L049D puls pc,u,y,x,b,a | |
| 690 | |
| 691 EatSpace lda #C$SPAC | |
| 692 EatSpc10 cmpa ,x+ | |
| 693 beq EatSpc10 | |
| 694 lda ,-x | |
| 695 rts | |
| 696 | |
| 697 FFork ldx <D.PrcDBT | |
| 698 os9 F$All64 | |
| 699 bcs L0517 | |
| 700 ldx <D.Proc | |
| 701 pshs x save calling proc desc on stack | |
| 702 ldd P$User,x | |
| 703 std P$User,y | |
| 704 lda P$Prior,x | |
| 705 clrb | |
| 706 std P$Prior,y | |
| 707 ldb #SysState | |
| 708 stb P$State,y | |
| 709 sty <D.Proc | |
| 710 ldd <P$NIO,x | |
| 711 std <P$NIO,y | |
| 712 ldd <P$NIO+2,x | |
| 713 std <P$NIO+2,y | |
| 714 leax <P$DIO,x | |
| 715 leay <P$DIO,y | |
| 716 ldb #DefIOSiz | |
| 717 * copy I/O stuff from parent to child | |
| 718 L04D7 lda ,x+ | |
| 719 sta ,y+ | |
| 720 decb | |
| 721 bne L04D7 | |
| 722 * X/Y = address of path table in respective proc desc | |
| 723 * Dup stdin/stdout/stderr | |
| 724 ldb #$03 | |
| 725 L04E0 lda ,x+ | |
| 726 os9 I$Dup | |
| 727 bcc L04E8 | |
| 728 clra | |
| 729 L04E8 sta ,y+ | |
| 730 decb | |
| 731 bne L04E0 | |
| 732 bsr L0553 | |
| 733 bcs L050C | |
| 734 puls y get parent proc desc | |
| 735 sty <D.Proc | |
| 736 lda P$ID,x get ID of new process | |
| 737 sta R$A,u store in caller's A | |
| 738 ldb P$CID,y get child id of parent | |
| 739 sta P$CID,y store new proc in parent's CID | |
| 740 lda P$ID,y get ID of parent | |
| 741 std P$PID,x store in child proc desc | |
| 742 ldb P$State,x update state of child | |
| 743 andb #^SysState | |
| 744 stb P$State,x | |
| 745 os9 F$AProc insert child in active Q | |
| 746 rts | |
| 747 L050C pshs b | |
| 748 os9 F$Exit | |
| 749 comb | |
| 750 puls x,b | |
| 751 stx <D.Proc | |
| 752 rts | |
| 753 L0517 comb | |
| 754 ldb #E$PrcFul | |
| 755 rts | |
| 756 | |
| 757 FChain bsr L0543 | |
| 758 bcs L0531 | |
| 759 orcc #IntMasks | |
| 760 ldb $0D,x | |
| 761 andb #$7F | |
| 762 stb $0D,x | |
| 763 L0527 os9 F$AProc | |
| 764 os9 F$NProc | |
| 765 | |
| 766 SFChain bsr L0543 | |
| 767 bcc L0527 | |
| 768 L0531 pshs b | |
| 769 stb <P$Signal,x | |
| 770 ldb P$State,x | |
| 771 orb #Condem | |
| 772 stb P$State,x | |
| 773 ldb #$FF | |
| 774 stb P$Prior,x | |
| 775 comb | |
| 776 puls pc,b | |
| 777 L0543 pshs u | |
| 778 ldx <D.Proc | |
| 779 ldu <P$PModul,x | |
| 780 os9 F$UnLink | |
| 781 ldu ,s | |
| 782 bsr L0553 | |
| 783 puls pc,u | |
| 784 L0553 ldx <D.Proc | |
| 785 pshs u,x | |
| 786 ldd <D.UsrSvc | |
| 787 std <P$SWI,x | |
| 788 std <P$SWI2,x | |
| 789 std <P$SWI3,x | |
| 790 clra | |
| 791 clrb | |
| 792 sta <P$Signal,x | |
| 793 std <P$SigVec,x | |
| 794 lda R$A,u | |
| 795 ldx R$X,u | |
| 796 os9 F$Link | |
| 797 bcc L0578 | |
| 798 os9 F$Load | |
| 799 bcs L05E7 | |
| 800 L0578 ldy <D.Proc | |
| 801 stu <P$PModul,y | |
| 802 cmpa #Prgrm+Objct | |
| 803 beq L058B | |
| 804 cmpa #Systm+Objct | |
| 805 beq L058B | |
| 806 comb | |
| 807 ldb #E$NEMod | |
| 808 bra L05E7 | |
| 809 L058B leay ,u Y = addr of module | |
| 810 ldu 2,s get U off stack (caller regs) | |
| 811 stx R$X,u | |
| 812 lda R$B,u | |
| 813 clrb | |
| 814 cmpd M$Mem,y compare passed mem to module's | |
| 815 bcc L059B branch if less than | |
| 816 ldd M$Mem,y | |
| 817 L059B addd #$0000 | |
| 818 bne L05A0 | |
| 819 L05A0 os9 F$Mem | |
| 820 bcs L05E7 | |
| 821 subd #R$Size subtract registers | |
| 822 subd R$Y,u subtract parameter area | |
| 823 bcs L05E5 | |
| 824 ldx R$U,u get parameter area | |
| 825 ldd R$Y,u get parameter size | |
| 826 pshs b,a | |
| 827 beq L05BE | |
| 828 leax d,x point to end of param area | |
| 829 L05B6 lda ,-x get byte, dec X | |
| 830 sta ,-y save byte in data area, dec X | |
| 831 cmpx R$U,u at top of param area? | |
| 832 bhi L05B6 | |
| 833 * set up registers for return of F$Fork/F$Chain | |
| 834 L05BE ldx <D.Proc | |
| 835 sty -$08,y put in X on caller stack | |
| 836 leay -R$Size,y back up register size | |
| 837 sty P$SP,x | |
| 838 lda P$ADDR,x | |
| 839 clrb | |
| 840 std R$U,y lowest address | |
| 841 sta R$DP,y set direct page | |
| 842 adda P$PagCnt,x | |
| 843 std R$Y,y | |
| 844 puls b,a | |
| 845 std R$D,y size of param area | |
| 846 ldb #Entire | |
| 847 stb R$CC,y | |
| 848 ldu <P$PModul,x get addr of prim. mod | |
| 849 ldd M$Exec,u | |
| 850 leau d,u | |
| 851 stu R$PC,y put in PC on caller reg | |
| 852 clrb | |
| 853 L05E5 ldb #E$IForkP | |
| 854 L05E7 puls pc,u,x | |
| 855 | |
| 856 FSRqMem ldd R$D,u | |
| 857 addd #$00FF | |
| 858 clrb | |
| 859 std R$D,u | |
| 860 ldx <D.FMBM+2 | |
| 861 ldd #$01FF | |
| 862 pshs b,a | |
| 863 bra L0604 | |
| 864 L05FA dec $01,s | |
| 865 ldb $01,s | |
| 866 L05FE lsl ,s | |
| 867 bcc L060A | |
| 868 rol ,s | |
| 869 L0604 leax -1,x | |
| 870 cmpx <D.FMBM | |
| 871 bcs L0620 | |
| 872 L060A lda ,x | |
| 873 anda ,s | |
| 874 bne L05FA | |
| 875 dec 1,s | |
| 876 subb 1,s | |
| 877 cmpb 1,u | |
| 878 rora | |
| 879 addb 1,s | |
| 880 rola | |
| 881 bcs L05FE | |
| 882 ldb 1,s | |
| 883 clra | |
| 884 incb | |
| 885 L0620 leas 2,s | |
| 886 bcs L0635 | |
| 887 ldx <D.FMBM | |
| 888 tfr d,y | |
| 889 ldb 1,u | |
| 890 clra | |
| 891 exg d,y | |
| 892 bsr L065A | |
| 893 exg a,b | |
| 894 std 8,u | |
| 895 L0633 clra | |
| 896 rts | |
| 897 L0635 comb | |
| 898 ldb #E$MemFul | |
| 899 rts | |
| 900 | |
| 901 FSRtMem ldd R$D,u | |
| 902 addd #$00FF | |
| 903 tfr a,b | |
| 904 clra | |
| 905 tfr d,y | |
| 906 ldd R$U,u | |
| 907 beq L0633 | |
| 908 tstb | |
| 909 beq L064E | |
| 910 comb | |
| 911 ldb #E$BPAddr | |
| 912 rts | |
| 913 L064E exg a,b | |
| 914 ldx <D.FMBM | |
| 915 bra L06AD | |
| 916 | |
| 917 FAllBit ldd R$D,u | |
| 918 leau R$X,u | |
| 919 pulu y,x | |
| 920 L065A pshs y,x,b,a | |
| 921 bsr L0690 | |
| 922 tsta | |
| 923 pshs a | |
| 924 bmi L0671 | |
| 925 lda ,x | |
| 926 L0665 ora ,s | |
| 927 leay -1,y | |
| 928 beq L0689 | |
| 929 lsr ,s | |
| 930 bcc L0665 | |
| 931 sta ,x+ | |
| 932 L0671 tfr y,d | |
| 933 sta ,s | |
| 934 lda #$FF | |
| 935 bra L067B | |
| 936 L0679 sta ,x+ | |
| 937 L067B subb #$08 | |
| 938 bcc L0679 | |
| 939 dec ,s | |
| 940 bpl L0679 | |
| 941 L0683 lsla | |
| 942 incb | |
| 943 bne L0683 | |
| 944 ora ,x | |
| 945 L0689 sta ,x | |
| 946 clra | |
| 947 leas 1,s | |
| 948 puls pc,y,x,b,a | |
| 949 L0690 pshs b | |
| 950 lsra | |
| 951 rorb | |
| 952 lsra | |
| 953 rorb | |
| 954 lsra | |
| 955 rorb | |
| 956 leax d,x | |
| 957 puls b | |
| 958 lda #$80 | |
| 959 andb #$07 | |
| 960 beq L06A6 | |
| 961 L06A2 lsra | |
| 962 decb | |
| 963 bne L06A2 | |
| 964 L06A6 rts | |
| 965 | |
| 966 FDelBit ldd R$D,u | |
| 967 leau R$X,u | |
| 968 pulu y,x | |
| 969 L06AD pshs y,x,b,a | |
| 970 bsr L0690 | |
| 971 coma | |
| 972 pshs a | |
| 973 bpl L06C4 | |
| 974 lda ,x | |
| 975 L06B8 anda ,s | |
| 976 leay -1,y | |
| 977 beq L06D8 | |
| 978 asr ,s | |
| 979 bcs L06B8 | |
| 980 sta ,x+ | |
| 981 L06C4 tfr y,d | |
| 982 bra L06CA | |
| 983 L06C8 clr ,x+ | |
| 984 L06CA subd #$0008 | |
| 985 bhi L06C8 | |
| 986 beq L06D8 | |
| 987 L06D1 lsla | |
| 988 incb | |
| 989 bne L06D1 | |
| 990 coma | |
| 991 anda ,x | |
| 992 L06D8 sta ,x | |
| 993 clr ,s+ | |
| 994 puls pc,y,x,b,a | |
| 995 | |
| 996 FSchBit pshs u | |
| 997 ldd R$D,u | |
| 998 ldx R$X,u | |
| 999 ldy R$Y,u | |
| 1000 ldu R$U,u | |
| 1001 bsr L06F3 | |
| 1002 puls u | |
| 1003 std R$D,u | |
| 1004 sty R$Y,u | |
| 1005 rts | |
| 1006 L06F3 pshs u,y,x,b,a | |
| 1007 pshs y,b,a | |
| 1008 clr 8,s | |
| 1009 clr 9,s | |
| 1010 tfr d,y | |
| 1011 bsr L0690 | |
| 1012 pshs a | |
| 1013 bra L0710 | |
| 1014 L0703 leay $01,y | |
| 1015 sty $05,s | |
| 1016 L0708 lsr ,s | |
| 1017 bcc L0714 | |
| 1018 ror ,s | |
| 1019 leax $01,x | |
| 1020 L0710 cmpx $0B,s | |
| 1021 bcc L0732 | |
| 1022 L0714 lda ,x | |
| 1023 anda ,s | |
| 1024 bne L0703 | |
| 1025 leay $01,y | |
| 1026 tfr y,d | |
| 1027 subd $05,s | |
| 1028 cmpd $03,s | |
| 1029 bcc L0739 | |
| 1030 cmpd $09,s | |
| 1031 bls L0708 | |
| 1032 std $09,s | |
| 1033 ldd $05,s | |
| 1034 std $01,s | |
| 1035 bra L0708 | |
| 1036 L0732 ldd $01,s | |
| 1037 std $05,s | |
| 1038 coma | |
| 1039 bra L073B | |
| 1040 L0739 std $09,s | |
| 1041 L073B leas $05,s | |
| 1042 puls pc,u,y,x,b,a | |
| 1043 | |
| 1044 FPrsNam ldx R$X,u | |
| 1045 bsr L074D | |
| 1046 std R$D,u | |
| 1047 bcs L0749 | |
| 1048 stx R$X,u | |
| 1049 L0749 sty R$Y,u | |
| 1050 rts | |
| 1051 L074D lda ,x | |
| 1052 cmpa #PDELIM pathlist char? | |
| 1053 bne L0755 branch if not | |
| 1054 leax 1,x go past pathlist char | |
| 1055 L0755 leay ,x | |
| 1056 clrb | |
| 1057 lda ,y+ | |
| 1058 anda #$7F | |
| 1059 bsr L0792 | |
| 1060 bcs L0772 | |
| 1061 L0760 incb | |
| 1062 lda -1,y | |
| 1063 bmi L076F hi bit set on this char, done | |
| 1064 lda ,y+ | |
| 1065 anda #$7F | |
| 1066 bsr IllChar | |
| 1067 bcc L0760 | |
| 1068 lda ,-y | |
| 1069 L076F andcc #^Carry | |
| 1070 rts | |
| 1071 L0772 cmpa #C$COMA comma? | |
| 1072 bne L0778 | |
| 1073 L0776 lda ,y+ | |
| 1074 L0778 cmpa #C$SPAC space? | |
| 1075 beq L0776 | |
| 1076 lda ,-y | |
| 1077 comb | |
| 1078 ldb #E$BNam | |
| 1079 rts | |
| 1080 | |
| 1081 * check for illegal characters in a pathlist | |
| 1082 IllChar cmpa #C$PERD period? | |
| 1083 beq L07C9 branch if so | |
| 1084 cmpa #'0 zero? | |
| 1085 bcs L07A2 branch if less than | |
| 1086 cmpa #'9 number? | |
| 1087 bls L07C9 branch if lower/same | |
| 1088 cmpa #'_ underscore? | |
| 1089 beq L07C9 branch if so | |
| 1090 L0792 cmpa #'A A? | |
| 1091 bcs L07A2 branch if less than | |
| 1092 cmpa #'Z Z? | |
| 1093 bls L07C9 branch if less or equal | |
| 1094 cmpa #'a a? | |
| 1095 bcs L07A2 branch if lower | |
| 1096 cmpa #'z z? | |
| 1097 bls L07C9 branch if less or equal | |
| 1098 L07A2 orcc #Carry | |
| 1099 rts | |
| 1100 | |
| 1101 FCmpNam ldb R$B,u | |
| 1102 leau R$X,u | |
| 1103 pulu y,x | |
| 1104 L07AB pshs y,x,b,a | |
| 1105 L07AD lda ,y+ | |
| 1106 bmi L07BE | |
| 1107 decb | |
| 1108 beq L07BA | |
| 1109 eora ,x+ | |
| 1110 anda #$DF | |
| 1111 beq L07AD | |
| 1112 L07BA orcc #Carry | |
| 1113 puls pc,y,x,b,a | |
| 1114 L07BE decb | |
| 1115 bne L07BA | |
| 1116 eora ,x | |
| 1117 anda #$5F | |
| 1118 bne L07BA | |
| 1119 puls y,x,b,a | |
| 1120 L07C9 andcc #^Carry | |
| 1121 rts | |
| 1122 | |
| 1123 FSSvc ldy R$Y,u | |
| 1124 bra InstSSvc | |
| 1125 SSvcLoop tfr b,a put syscall code in A | |
| 1126 anda #$7F kill hi bit | |
| 1127 cmpa #$7F is code $7F? | |
| 1128 beq SSvcOK | |
| 1129 cmpa #$37 | |
| 1130 bcs SSvcOK branch if A less than $37 | |
| 1131 comb | |
| 1132 ldb #E$ISWI | |
| 1133 rts | |
| 1134 SSvcOK lslb | |
| 1135 ldu <D.SysDis | |
| 1136 leau b,u U points to entry in table | |
| 1137 ldd ,y++ get addr of func | |
| 1138 leax d,y get absolute addr | |
| 1139 stx ,u store in system table | |
| 1140 bcs InstSSvc branch if system only | |
| 1141 stx <$70,u else store in user table too | |
| 1142 InstSSvc ldb ,y+ get system call code in B | |
| 1143 cmpb #$80 end of table? | |
| 1144 bne SSvcLoop branch if not | |
| 1145 rts | |
| 1146 | |
| 1147 emod | |
| 1148 eom equ * | |
| 1149 | |
| 165 | 1150 fdb Clock |
| 247 | 1151 Vectors fdb SWI3 SWI3 |
| 1152 fdb SWI2 SWI2 | |
| 1153 fdb DUMMY FIRQ | |
| 1154 fdb SVCIRQ IRQ | |
| 1155 fdb SWI SWI | |
| 1156 fdb DUMMY NMI | |
| 0 | 1157 |
| 1158 end | |
| 1159 |