wok annotate linld/stuff/src/CRTL.ASM @ rev 20634

linld: fix open()
author Pascal Bellard <pascal.bellard@slitaz.org>
date Tue Jan 08 17:51:51 2019 +0100 (2019-01-08)
parents ab907169f156
children cbcb33ee9044
rev   line source
pascal@19515 1 ;***************************************************************
pascal@19515 2 ;****** This file is distributed under GPL
pascal@19515 3 ;***************************************************************
pascal@19515 4 ideal
pascal@19515 5 %crefref
pascal@19515 6 %noincl
pascal@19515 7 %nomacs
pascal@19636 8 ifdef NO386
pascal@19636 9 p8086
pascal@19636 10 else
pascal@19515 11 p386
pascal@19636 12 endif
pascal@19515 13
pascal@19515 14 group DGROUP _TEXT,_DATA,_BSS
pascal@19515 15 assume cs:DGROUP,ds:DGROUP
pascal@19515 16
pascal@19515 17 segment _DATA byte public use16 'DATA'
pascal@19515 18
pascal@20451 19 global _heap_top
pascal@20451 20 extrn _bss_end
pascal@19546 21 _heap_top dw _bss_end
pascal@19546 22 msg_hang db "High mem corrupted - not exiting to DOS"
pascal@20527 23 msg_lf db 10,0
pascal@20451 24 vcpi_alloc_err db "VCPI "
pascal@20451 25 msg_malloc db "malloc error",0
pascal@19825 26 ifdef EXTRA
pascal@19825 27 tazboot_cmd db "tazboot.cmd",0
pascal@19825 28 endif
pascal@19515 29
pascal@19515 30 ends _DATA
pascal@19515 31
pascal@19515 32 segment _BSS byte public use16 'BSS'
pascal@19515 33
pascal@20538 34 _xfer_buf db 4096 dup (?)
pascal@19515 35 global _no_exit:byte
pascal@19515 36 _no_exit db ?
pascal@19515 37 filecnt db ? ; in fact 0 minus file count...
pascal@19515 38 nextfilename dw ?
pascal@19571 39 ifdef LARGE_IMAGES
pascal@19571 40 curdata dw ?
pascal@19571 41 endif
pascal@19825 42 ifdef EXTRA
pascal@19825 43 ultoabuf db 12 dup (?)
pascal@19825 44 endif
pascal@19515 45
pascal@19515 46 ends _BSS
pascal@19515 47
pascal@19515 48 segment _TEXT byte public use16 'CODE'
pascal@19515 49
pascal@19515 50 ;***************************************************************
pascal@20630 51 ;_fastcall void strcpy(bx:const char* a, ax:const char* b);
pascal@20630 52 ;_fastcall void strcat(bx:const char* a, ax:const char* b);
pascal@20630 53 ;_fastcall void strcatb(bx:const char* a, ax:const char* b);
pascal@19538 54 ;***************************************************************
pascal@20528 55 global @strcatb$qpxzct1:near
pascal@20528 56 proc @strcatb$qpxzct1 near
pascal@19538 57
pascal@19826 58 ifdef EXTRA
pascal@20142 59 mov cl,7Fh
pascal@20539 60 db 0bah ; mov dx,imm opcode
pascal@20528 61 global @strcat$qpxzct1:near
pascal@20528 62 @strcat$qpxzct1:
pascal@20142 63 mov cl,80h
pascal@20539 64 db 0bah ; mov dx,imm opcode
pascal@20528 65 global @strcpy$qpxzct1:near
pascal@20528 66 @strcpy$qpxzct1:
pascal@20142 67 xor cx,cx
pascal@19826 68 endif
pascal@19538 69 push si
pascal@20630 70 xchg ax,bx ; b
pascal@20630 71 xchg ax,si ; a
pascal@19826 72 ifdef EXTRA
pascal@20142 73 jcxz @@nocat
pascal@19826 74 endif
pascal@19538 75 @@catlp:
pascal@20630 76 lodsb ; a=si
pascal@20527 77 or al,al
pascal@19538 78 jne @@catlp
pascal@19538 79 dec si
pascal@19826 80 ifdef EXTRA
pascal@20630 81 cmp bx,si
pascal@20630 82 adc al,cl ; set S when bx != si or cl = 80
pascal@20142 83 mov al,20h
pascal@20142 84 jns @@cpyhead
pascal@19826 85 endif
pascal@19538 86 @@nocat:
pascal@19538 87 @@cpylp:
pascal@20142 88 mov al,[bx]
pascal@20142 89 inc bx
pascal@20142 90 @@cpyhead:
pascal@19538 91 mov [si],al
pascal@19538 92 inc si
pascal@20527 93 or al,al
pascal@19538 94 jne @@cpylp
pascal@20142 95 strfound:
pascal@20142 96 xchg ax,dx
pascal@20142 97 strend:
pascal@19538 98 pop si
pascal@20142 99 ret
pascal@19538 100
pascal@20528 101 endp @strcatb$qpxzct1
pascal@19538 102
pascal@19538 103
pascal@20146 104 ifdef EXTRA
pascal@20146 105 p8086
pascal@20146 106 ;***************************************************************
pascal@20630 107 ;_fastcall char strstr(bx:const char* a, ax:const char* b);
pascal@20146 108 ;***************************************************************
pascal@20528 109 global @strstr$qpxzct1:near
pascal@20528 110 proc @strstr$qpxzct1 near
pascal@20146 111
pascal@20538 112 xchg ax,cx ; b
pascal@20538 113 mov dx,bx ; a
pascal@20146 114 push si
pascal@20146 115 @@loop:
pascal@20146 116 xor ax,ax
pascal@20146 117 mov si,dx
pascal@20146 118 cmp [si],al ; *a
pascal@20146 119 jz strend ; return ax = NULL
pascal@20146 120 mov bx,cx
pascal@20146 121 @@match:
pascal@20146 122 or ah,[bx] ; *b
pascal@20146 123 jz strfound
pascal@20146 124 inc bx
pascal@20146 125 lodsb
pascal@20146 126 sub ah,al
pascal@20146 127 jz @@match
pascal@20146 128 inc dx
pascal@20146 129 jmp @@loop
pascal@20146 130
pascal@20528 131 endp @strstr$qpxzct1
pascal@20146 132
pascal@20146 133
pascal@20146 134 ;***************************************************************
pascal@20630 135 ;_fastcall int strcmp(bx:const char* a, ax:const char* b);
pascal@20146 136 ;***************************************************************
pascal@20528 137 global @strcmp$qpxzct1:near
pascal@20528 138 proc @strcmp$qpxzct1 near
pascal@20146 139
pascal@20146 140 push si
pascal@20146 141 xchg ax,si
pascal@20146 142 dec bx
pascal@20146 143 @@lp:
pascal@20146 144 inc bx
pascal@20146 145 lodsb
pascal@20146 146 sub al,[bx]
pascal@20146 147 jnz @@out
pascal@20630 148 or al,[bx]
pascal@20146 149 jnz @@lp
pascal@20146 150 @@out:
pascal@20146 151 cbw
pascal@20146 152 pop si
pascal@20146 153 ret
pascal@20146 154
pascal@20528 155 endp @strcmp$qpxzct1
pascal@20146 156 endif
pascal@20146 157
pascal@20146 158
pascal@19538 159 ;***************************************************************
pascal@20630 160 ;_fastcall void puts(bx:const char* s):
pascal@19515 161 ;***************************************************************
pascal@20528 162 global @puts$qpxzc:near
pascal@20528 163 proc @puts$qpxzc near
pascal@19515 164
pascal@20486 165 ; global puts:near ; puts(bx)
pascal@19515 166 puts:
pascal@20510 167 call @@putsz
pascal@20527 168 mov bx,offset msg_lf
pascal@20527 169 mov dl,13
pascal@20510 170 @@putcz:
pascal@20160 171 mov ah,2
pascal@20146 172 int 21h
pascal@20510 173 @@putsz:
pascal@20160 174 mov dl,[bx]
pascal@20146 175 inc bx
pascal@20160 176 or dl,dl
pascal@20510 177 jne @@putcz ; ZF=1 (for malloc failure)
pascal@19538 178 ret
pascal@19515 179
pascal@20528 180 endp @puts$qpxzc
pascal@19515 181
pascal@19515 182
pascal@19538 183
pascal@19538 184 ;***************************************************************
pascal@20630 185 ;_fastcall int open(bx:const char* name, int flags=O_RDONLY);
pascal@19515 186 ;***************************************************************
pascal@20538 187 global openargs:near ; openargs(bx)
pascal@20538 188 openargs:
pascal@20538 189 cmp [byte bx],'@'
pascal@20538 190 stc
pascal@20538 191 jne fail
pascal@20538 192 inc bx
pascal@20538 193
pascal@20528 194 global @open$qpxzc:near
pascal@20528 195 proc @open$qpxzc near
pascal@19515 196
pascal@19546 197 global open:near ; open(bx)
pascal@19515 198 open:
pascal@20630 199 ifdef LONG_FILENAME
pascal@20630 200 mov ax,716Ch
pascal@20632 201 push bx di si
pascal@20630 202 mov si,bx
pascal@20630 203 xor bx,bx ; R/O
pascal@20630 204 xor cx,cx ; attributes
pascal@20632 205 xor di,di ; alias hint
pascal@20630 206 cwd ; action = open
pascal@20634 207 stc
pascal@20630 208 int 21h
pascal@20632 209 pop si di bx
pascal@20630 210 jnc doret
pascal@20630 211 endif
pascal@20538 212 mov ax,3d00h ; read-only+compatibility
pascal@20538 213 ;mov cl,0 ; attribute mask
pascal@19515 214 mov dx,bx
pascal@19515 215 dos:
pascal@19515 216 int 21h
pascal@19538 217 chkc:
pascal@19515 218 jnc doret
pascal@19515 219 fail:
pascal@19515 220 sbb ax,ax ; ax=-1 CF
pascal@19515 221 cwd
pascal@19515 222 doret:
pascal@19515 223 ifndef NO386
pascal@19538 224 push dx ; see next_chunk:lseek
pascal@19538 225 push ax
pascal@19538 226 pop eax
pascal@19515 227 endif
pascal@19515 228 ret
pascal@19515 229
pascal@20528 230 endp @open$qpxzc
pascal@19515 231
pascal@19515 232
pascal@19515 233 ;***************************************************************
pascal@20632 234 ;_fastcall int fileexist(bx:const char* name);
pascal@20632 235 ;***************************************************************
pascal@20632 236 global @fileexist$qpxzc:near
pascal@20632 237 @fileexist$qpxzc:
pascal@20632 238 call @open$qpxzc
pascal@20632 239 jc fail
pascal@20632 240
pascal@20632 241 ;***************************************************************
pascal@20630 242 ;_fastcall int close(ax:int fd);
pascal@19515 243 ;***************************************************************
pascal@20528 244 global @close$qi:near
pascal@20528 245 proc @close$qi near
pascal@19515 246
pascal@20540 247 global close:near ; close(ax)
pascal@19515 248 close:
pascal@20540 249 xchg ax,bx
pascal@19515 250 mov ah,3Eh
pascal@19515 251 or bx,bx
pascal@19515 252 jnz dos
pascal@19515 253 ret
pascal@19515 254
pascal@20528 255 endp @close$qi
pascal@19515 256
pascal@19515 257
pascal@19515 258 ;***************************************************************
pascal@20630 259 ;_fastcall int read(ax:int fd, bx:void* data, dx:int sz);
pascal@20630 260 ;_fastcall int write(ax:int fd, bx:const void* data, dx:int sz);
pascal@19515 261 ;***************************************************************
pascal@20528 262 global @read$qipvi:near
pascal@20528 263 proc @read$qipvi near
pascal@19515 264
pascal@20146 265 ifdef WRITE
pascal@19580 266 stc
pascal@19634 267 db 0B0h ; mov al,im
pascal@20528 268 global @write$qipvi:near
pascal@20528 269 @write$qipvi:
pascal@19580 270 clc
pascal@20146 271 endif
pascal@20632 272 @read$dxbxax:
pascal@20538 273 xchg ax,bx ; fd
pascal@20538 274 xchg ax,dx ; data
pascal@20538 275 xchg ax,cx ; sz
pascal@20146 276 ifdef WRITE
pascal@19580 277 mov ah,40h
pascal@19580 278 sbb ah,0
pascal@20146 279 else
pascal@20528 280 global @read$cxdxbx:near
pascal@20528 281 @read$cxdxbx:
pascal@20146 282 mov ah,3Fh
pascal@20146 283 endif
pascal@19515 284 jcxz fail
pascal@19515 285 jmp dos
pascal@19515 286
pascal@20528 287 endp @read$qipvi
pascal@19515 288
pascal@19515 289 ;***************************************************************
pascal@20630 290 ;_fastcall long lseekcur(ax:int fd, dx:int whence);
pascal@19515 291 ;***************************************************************
pascal@19899 292
pascal@20548 293 global @lseekcur$qii:near ; fd=ax whence=dx
pascal@20542 294 proc @lseekcur$qii near
pascal@20542 295
pascal@20632 296 mov cl,1
pascal@20542 297 xchg ax,bx
pascal@20542 298 xchg ax,dx
pascal@20542 299 cwd
pascal@20542 300 xchg ax,dx
pascal@20542 301 xchg ax,cx
pascal@20542 302 jmp lseek
pascal@20542 303 rewind: ; rewind(ax)
pascal@20542 304 mov bl,0
pascal@20632 305 lseek0: ; lseek0(ax,bl=dir)
pascal@20542 306 xor dx,dx
pascal@19571 307 xor cx,cx
pascal@20632 308 lseekset:
pascal@20542 309 xchg ax,bx
pascal@20542 310 lseek:
pascal@20548 311 mov ah,42h ; bx=fd cx:dx=offset al=whence
pascal@19515 312 jmp dos
pascal@19515 313
pascal@20542 314 endp @lseekcur$qii
pascal@19825 315
pascal@20538 316 ifdef EXTRA
pascal@20538 317
pascal@20534 318 ;typedef unsigned dirsizetype;
pascal@20534 319 struc isostate ; struct isostate {
pascal@20534 320 fd dw ? ; 0 int fd;
pascal@20534 321 filemod dw ? ; 2 unsigned short filemod;
pascal@20534 322 fileofs dd ? ; 4 unsigned long fileofs;
pascal@20534 323 filesize dd ? ; 8 unsigned long filesize;
pascal@20534 324 filename dw ? ;12 char *filename;
pascal@20534 325 curdirsize dw ? ;14 dirsizetype curdirsize;
pascal@20534 326 dirsize dw ? ;16 dirsizetype dirsize;
pascal@20534 327 curdirofs dd ? ;18 unsigned long curdirofs;
pascal@20534 328 dirofs dd ? ;22 unsigned long dirofs;
pascal@20534 329 curpos dw ? ;26 unsigned curpos;
pascal@20534 330 buffer db 2560 dup(?) ;28 char buffer[2048+512];
pascal@20534 331 ends ; } isostate;
pascal@19825 332 ;***************************************************************
pascal@20630 333 ;_fastcall long isolseek(bx:const unsigned long *offset);
pascal@20632 334 ;_fastcall long lseekset2(ax:int fd, bx:unsigned long* whence);
pascal@19825 335 ;***************************************************************
pascal@20528 336 global @isolseek$qpxul:near
pascal@20528 337 proc @isolseek$qpxul near
pascal@19825 338
pascal@20534 339 isolseek:
pascal@20632 340 extrn _isostate:isostate
pascal@20632 341 mov ax,[_isostate.fd]
pascal@20634 342 global @lseekset2$qipul:near
pascal@20632 343 @lseekset2$qipul:
pascal@19825 344 mov dx,[bx]
pascal@19825 345 mov cx,[bx+2]
pascal@20632 346 mov bl,0
pascal@20538 347 jmp lseekset
pascal@20534 348
pascal@20538 349 endp @isolseek$qpxul
pascal@20534 350
pascal@20534 351 ;***************************************************************
pascal@20630 352 ;_fastcall int isoreadsector(bx:const unsigned long *offset);
pascal@20534 353 ;***************************************************************
pascal@20534 354 global @isoreadsector$qpxul:near
pascal@20534 355 proc @isoreadsector$qpxul near
pascal@20534 356
pascal@20534 357 call isolseek
pascal@20632 358 jc doret
pascal@20632 359 mov dx,2560
pascal@20632 360 mov bx,offset _isostate.buffer
pascal@20632 361 mov ax,[_isostate.fd]
pascal@20632 362 jmp @read$dxbxax ; read(fd,buffer,2560)
pascal@20534 363
pascal@20534 364 endp @isoreadsector$qpxul
pascal@20534 365
pascal@19825 366 endif
pascal@19515 367
pascal@19515 368
pascal@19515 369 ;***************************************************************
pascal@20630 370 ;_fastcall int strhead(bx:const char* a, ax:const char* b);
pascal@19515 371 ;***************************************************************
pascal@20528 372 global @strhead$qpxzct1:near
pascal@20528 373 proc @strhead$qpxzct1 near
pascal@19515 374
pascal@19515 375 @@loop:
pascal@19634 376 xchg ax,bx
pascal@19515 377 mov cl,[bx] ; cl = *b++
pascal@19515 378 inc bx
pascal@19515 379 or cl,cl ; clear C
pascal@19515 380 jz fail ; return 0
pascal@19515 381 xchg ax,bx
pascal@19515 382 xor cl,[bx] ; cl -= *a++
pascal@19634 383 inc bx
pascal@19515 384 and cl,0dfh ; case insensitive
pascal@19634 385 jz @@loop
pascal@19634 386 ret ; return b (is not 0)
pascal@19515 387
pascal@20528 388 endp @strhead$qpxzct1
pascal@19515 389
pascal@19515 390
pascal@19515 391 ;***************************************************************
pascal@20630 392 ;_fastcall char* malloc_or_die(ax:unsigned size);
pascal@19515 393 ;***************************************************************
pascal@20528 394 global @malloc_or_die$qui:near
pascal@20528 395 proc @malloc_or_die$qui near
pascal@19515 396
pascal@20540 397 xchg ax,cx ; size
pascal@19515 398 global malloc_or_die:near ; malloc_or_die(cx)
pascal@19515 399 malloc_or_die:
pascal@20510 400 mov ax,[_heap_top] ; return value
pascal@20510 401 mov bx,sp
pascal@20510 402 add bh,-14h ; MIN_STACK=_1k+PAGE_SIZE
pascal@20510 403 sub bx,ax ; can't overflow
pascal@20510 404 cmp bx,cx
pascal@20456 405 mov bx,offset msg_malloc
pascal@20510 406 jb die
pascal@20510 407 add [_heap_top],cx ; _BEG has zero'd heap
pascal@19515 408 ret
pascal@19515 409
pascal@20528 410 endp @malloc_or_die$qui
pascal@19515 411
pascal@19515 412
pascal@19515 413 ;***************************************************************
pascal@20630 414 ;_fastcall int die(bx:const char* msg);
pascal@19538 415 ;int exit();
pascal@19515 416 ;int abort();
pascal@19515 417 ;***************************************************************
pascal@20528 418 global @die$qpxzc:near
pascal@20528 419 proc @die$qpxzc near
pascal@20528 420 @die$qpxzc:
pascal@19515 421 global die:near ; die(bx)
pascal@19515 422 die:
pascal@19515 423 call puts
pascal@20486 424 ; global _exit:near
pascal@19538 425 _exit:
pascal@19515 426 mov al,[_no_exit]
pascal@20527 427 or al,al
pascal@19515 428 jne @@hang
pascal@19515 429 extrn exit:near
pascal@19515 430 inc ax
pascal@19515 431 jmp near exit
pascal@19515 432 @@hang:
pascal@19515 433 mov bx, offset msg_hang
pascal@19515 434 call puts
pascal@20486 435 ; global _abort:near
pascal@19515 436 _abort:
pascal@19515 437 cli
pascal@19515 438 @@stop:
pascal@19515 439 hlt
pascal@19515 440 jmp @@stop
pascal@19515 441
pascal@20528 442 endp @die$qpxzc
pascal@19515 443
pascal@19546 444 struc image_himem ;struct image_himem {
pascal@19546 445 fd dw ? ; 0 int fd;
pascal@19546 446 fallback dd ? ; 2 u32 fallback;
pascal@19546 447 size dd ? ; 6 u32 size;
pascal@19546 448 remaining dd ? ;10 u32 remaining;
pascal@19546 449 buf dd ? ;14 u32 buf;
pascal@19546 450 bufv dw ? ;18 u32 *bufv;
pascal@19546 451 errmsg dw ? ;20 char *errmsg;
pascal@19546 452 chunk_size dd ? ;22 u32 chunk_size;
pascal@19546 453 next_chunk dw ? ;26 void (*next_chunk)(struct image_himem *);
pascal@19546 454 state dw ? ;28 u16 state;
pascal@19546 455 fd2close dw ? ;30 u16 fd2close;
pascal@19546 456 ends ;};
pascal@19515 457
pascal@19636 458 ;***************************************************************
pascal@20630 459 ;static long next_chunk(struct image_himem *di);
pascal@19636 460 ;***************************************************************
pascal@19636 461 proc next_chunk near
pascal@19636 462
pascal@19636 463 push si
pascal@20540 464 mov ax,[(image_himem di).fd]
pascal@19636 465 call close
pascal@19636 466 ifndef NO386
pascal@19636 467 xor eax,eax
pascal@19636 468 else
pascal@19636 469 xor ax,ax
pascal@20485 470 cwd
pascal@19636 471 endif
pascal@19636 472 mov [(image_himem di).fd],ax
pascal@19636 473 mov bx,[(image_himem di).state]
pascal@19636 474 cmp al,[bx] ; ""
pascal@19636 475 jz @@end
pascal@19636 476 mov si,bx
pascal@19636 477 @@scan:
pascal@19636 478 lodsb
pascal@19636 479 mov cx,si
pascal@19636 480 cmp al,','
pascal@19636 481 jz @@eos
pascal@20527 482 or al,al
pascal@19636 483 jnz @@scan
pascal@19636 484 dec cx
pascal@19636 485 @@eos:
pascal@19636 486 mov [(image_himem di).state],cx
pascal@19636 487 dec si
pascal@19636 488 push [word si]
pascal@20485 489 mov [byte si],ah ; set temp eos
pascal@19636 490 call open
pascal@19636 491 pop [word si] ; restore string
pascal@19636 492 jc @@die
pascal@19636 493 mov [(image_himem di).fd],ax
pascal@19636 494 mov [(image_himem di).fd2close],ax
pascal@20542 495 mov bl,02h ; SEEK_END
pascal@19636 496 call lseek0
pascal@19636 497 @@die:
pascal@19636 498 mov bx,[(image_himem di).errmsg]
pascal@19636 499 jc die
pascal@19636 500 ifndef NO386
pascal@19636 501 push eax
pascal@20548 502 mov ax,[(image_himem di).fd]
pascal@19636 503 call rewind
pascal@19636 504 pop eax
pascal@19636 505 @@end:
pascal@19636 506 mov [(image_himem di).chunk_size],eax
pascal@19636 507 else
pascal@19636 508 push ax
pascal@19636 509 push dx
pascal@20548 510 mov ax,[(image_himem di).fd]
pascal@19636 511 call rewind
pascal@19636 512 pop dx
pascal@19636 513 pop ax
pascal@19636 514 @@end:
pascal@19636 515 mov [word (image_himem di).chunk_size],ax
pascal@19636 516 mov [word ((image_himem di).chunk_size)+2],dx
pascal@19636 517 endif
pascal@19636 518 pop si
pascal@19636 519 ret
pascal@19636 520
pascal@19636 521 endp next_chunk
pascal@19636 522
pascal@19636 523
pascal@19571 524 ifdef LARGE_IMAGES
pascal@19571 525 struc data_himem ;struct data_himem {
pascal@19571 526 first dd ? ; 0 u32 first;
pascal@19571 527 cacheidx dw ? ; 4 int cacheidx;
pascal@19571 528 pageidx dw ? ; 6 int pageidx;
pascal@19571 529 cache dd 1024 dup(?) ; 8 int cache;
pascal@19571 530 page dd 1024 dup(?) ;4104 int page;
pascal@19571 531 ends ;}; // size=8200
pascal@19571 532 endif
pascal@19571 533
pascal@19515 534 ;***************************************************************
pascal@20630 535 ;_fastcall u32* malloc_bufv_or_die(bx:struct image_himem *m);
pascal@19538 536 ;***************************************************************
pascal@20528 537 global @malloc_bufv_or_die$qp11image_himem:near
pascal@20528 538 proc @malloc_bufv_or_die$qp11image_himem near
pascal@19538 539
pascal@19636 540 p386
pascal@19538 541 push si
pascal@20538 542 mov si,bx
pascal@19571 543 ifdef LARGE_IMAGES
pascal@20527 544 movzx ecx,[word ((image_himem si).size) + 2]
pascal@19571 545 shr cx,4 ; pages index size = size >> 20
pascal@19571 546 add cx,8+4096+8
pascal@19571 547 call malloc_or_die
pascal@20527 548 mov cx,4096+4095 ; cnt = 1+(m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19571 549 add ecx,[(image_himem si).size]
pascal@19571 550 shr ecx,12
pascal@19571 551 mov [curdata],ax
pascal@19571 552 else
pascal@19546 553 mov ecx,[(image_himem si).size]
pascal@19538 554 dec ecx
pascal@19538 555 shr ecx,12
pascal@19538 556 inc cx ; cnt = (m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19538 557 push cx
pascal@19538 558 inc cx ; cnt+1
pascal@19538 559 shl cx,2 ; bufv => vcpi => vm86
pascal@19538 560 ; our malloc zeroes allocated mem: bufv[cnt]=0;
pascal@19538 561 ; Allocate pages, storing addrs in addrbuf
pascal@19538 562 call malloc_or_die
pascal@19571 563 pop cx
pascal@19571 564 push ax
pascal@19571 565 endif
pascal@19546 566 mov [(image_himem si).bufv],ax
pascal@19571 567 xchg ax,si
pascal@19538 568 @@vcpi_alloc:
pascal@19538 569 xor edx,edx
pascal@19538 570 mov ax,0DE04h
pascal@19538 571 int 67h
pascal@19538 572 or ah,ah
pascal@19538 573 mov bx,offset vcpi_alloc_err
pascal@19571 574 jnz die
pascal@19571 575 ; for (i = cnt-1; i >= 0; i--)
pascal@19571 576 ifdef LARGE_IMAGES
pascal@19571 577 mov eax,ecx
pascal@19571 578 dec eax
pascal@19571 579 else
pascal@19571 580 mov ax,cx
pascal@19571 581 dec ax
pascal@19571 582 cwde
pascal@19571 583 endif
pascal@19571 584 shl eax,12 ; i*_4k
pascal@19571 585 ; if (edx < pm.fallback+i*_4k && edx >= pm.fallback) again
pascal@19899 586 extrn _imgs
pascal@19899 587 mov bx,offset _imgs+2
pascal@19571 588 push eax
pascal@19571 589 add eax,[bx-2+2]
pascal@19571 590 cmp eax,edx ; pm.fallback+i*_4k <= edx ?
pascal@19571 591 pop eax ; i*_4k
pascal@19571 592 jbe @@pmok
pascal@19571 593 cmp edx,[bx-2+2] ; edx >= pm.fallback ?
pascal@19571 594 jae @@vcpi_alloc
pascal@19571 595 @@pmok:
pascal@19571 596 ; if (edx >= initrd.fallback+i*_4k && edx < initrd.fallback+initrd.size) again
pascal@19899 597 extrn _imgs
pascal@19899 598 mov bx,offset _imgs+32+2
pascal@19571 599 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 600 cmp eax,edx ; initrd.fallback+i*_4k > edx ?
pascal@19571 601 ja @@initrdok
pascal@19571 602 mov eax,[bx-2+6] ; initrd.size
pascal@19571 603 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 604 cmp eax,edx ; initrd.fallback+initrd.size > edx ?
pascal@19571 605 @@jnc_vcpi_alloc:
pascal@19571 606 ja @@vcpi_alloc
pascal@19571 607 @@initrdok:
pascal@19571 608 ifdef LARGE_IMAGES
pascal@19571 609 cmp [(data_himem si).first],0
pascal@19571 610 jne @@notfirst
pascal@19571 611 mov [(data_himem si).first],edx
pascal@19571 612 @@notfirst:
pascal@19571 613 mov bx,[(data_himem si).cacheidx]
pascal@19571 614 cmp bh,4
pascal@19571 615 jae @@nextpage
pascal@19571 616 shl bx,2
pascal@19571 617 inc [(data_himem si).cacheidx]
pascal@19571 618 mov [(data_himem bx+si).cache],edx
pascal@19571 619 loopd @@vcpi_alloc
pascal@19571 620 mov [(data_himem bx+si).cache],ecx ; last is 0
pascal@19571 621 @@nextpage:
pascal@19571 622 and [(data_himem si).cacheidx],0
pascal@19571 623 mov bx,[(data_himem si).pageidx]
pascal@19571 624 mov [(data_himem bx+si).page],edx
pascal@19571 625 add [(data_himem si).pageidx],4
pascal@19571 626 push cx
pascal@19571 627 lea cx,[(data_himem si).cache]
pascal@19571 628 ifdef NO386
pascal@19571 629 push edx
pascal@19571 630 pop dx
pascal@19571 631 pop ax
pascal@19571 632 endif
pascal@19571 633 call storepage ; storepage(edx,cx)
pascal@19571 634 pop cx
pascal@19571 635 or ecx,ecx ; clear C
pascal@19571 636 jnz @@jnc_vcpi_alloc
pascal@19571 637 mov [dword (data_himem si).cacheidx],ecx
pascal@19571 638 xchg ax,si
pascal@19571 639 else
pascal@19571 640 mov [si],edx
pascal@19571 641 lodsd ; si=+4
pascal@19538 642 loop @@vcpi_alloc
pascal@19538 643 pop ax
pascal@19571 644 endif
pascal@19538 645 pop si
pascal@19538 646 ret
pascal@19636 647 ifdef NO386
pascal@19636 648 p8086
pascal@19636 649 endif
pascal@19538 650
pascal@20528 651 endp @malloc_bufv_or_die$qp11image_himem
pascal@19538 652
pascal@19538 653
pascal@19538 654 ;***************************************************************
pascal@20630 655 ;_fastcall void memcpy_image(bx:struct image_himem *m);
pascal@19515 656 ;***************************************************************
pascal@20528 657 global @memcpy_image$qp11image_himem:near
pascal@20528 658 proc @memcpy_image$qp11image_himem near
pascal@19515 659
pascal@19571 660 ifndef NO386
pascal@19571 661 mov edx,[(image_himem bx).fallback]
pascal@19571 662 mov eax,[(image_himem bx).buf]
pascal@19571 663 cmp eax,edx ; if (m->fallback != m->buf)
pascal@19571 664 jz @@skip ; memcpy32(m->fallback,0,m->buf,m->size)
pascal@19571 665 ifdef LARGE_IMAGES
pascal@19571 666 mov ecx,[(image_himem bx).size]
pascal@20146 667 memcpy_imagez: ; memcpy_imagez(edx,eax,ecx)
pascal@19571 668 push ecx
pascal@19571 669 else
pascal@19571 670 push [(image_himem bx).size]
pascal@19571 671 endif
pascal@19571 672 push eax
pascal@19571 673 push 0
pascal@19571 674 call_memcpy32:
pascal@19571 675 push edx
pascal@19571 676 else
pascal@19571 677 mov ax,[word ((image_himem bx).fallback)]
pascal@19571 678 mov dx,[word ((image_himem bx).fallback)+2]
pascal@19571 679 mov cx,[word ((image_himem bx).buf)]
pascal@19571 680 cmp ax,cx ; if (m->fallback != m->buf)
pascal@19571 681 jnz @@do
pascal@19571 682 cmp dx,[word ((image_himem bx).buf)+2]
pascal@19571 683 jz @@skip ; memcpy32(m->fallback,0,m->buf,m->size)
pascal@19571 684 @@do:
pascal@19571 685 push [word ((image_himem bx).size)+2]
pascal@19571 686 push [word ((image_himem bx).size)]
pascal@19571 687 push [word ((image_himem bx).buf)+2]
pascal@19571 688 push cx
pascal@19571 689 xor cx,cx
pascal@19571 690 push cx
pascal@19571 691 call_memcpy32:
pascal@19571 692 push dx
pascal@19571 693 push ax
pascal@19571 694 ifdef LARGE_IMAGES
pascal@19571 695 jmp @@memcpy
pascal@20146 696 memcpy_imagez: ; memcpy_imagez(edx,eax,ecx)
pascal@19636 697 p386
pascal@19571 698 push ecx
pascal@19571 699 push eax
pascal@19571 700 push 0
pascal@19571 701 push edx
pascal@19636 702 ifdef NO386
pascal@19636 703 p8086
pascal@19636 704 endif
pascal@19571 705 endif
pascal@19571 706 endif
pascal@19571 707 @@memcpy:
pascal@20528 708 extrn memcpy32:near
pascal@20528 709 call near memcpy32
pascal@19571 710 @@skip:
pascal@19571 711 ret
pascal@19571 712
pascal@20528 713 endp @memcpy_image$qp11image_himem
pascal@19571 714
pascal@19571 715 ;***************************************************************
pascal@20630 716 ;_fastcall void storepage(bx:u32 *dst);
pascal@19571 717 ;***************************************************************
pascal@20538 718 global @storepage$qpul:near
pascal@20538 719 proc @storepage$qpul near
pascal@19571 720
pascal@19571 721 ifndef NO386
pascal@19571 722 mov edx,[bx]
pascal@19571 723 else
pascal@19571 724 mov ax,[bx]
pascal@19571 725 mov dx,[bx+2]
pascal@19571 726 endif
pascal@20538 727 mov cx,offset _xfer_buf
pascal@20146 728 storepage: ; storepage(edx,cx)
pascal@19571 729 ifndef NO386
pascal@19571 730 push 0
pascal@19571 731 push 4096
pascal@19571 732 push 0
pascal@19571 733 else
pascal@19571 734 xor bx,bx
pascal@19571 735 push bx
pascal@19571 736 mov bh,4096/256
pascal@19571 737 push bx
pascal@19571 738 xor bx,bx
pascal@19571 739 push bx
pascal@19571 740 endif
pascal@19571 741 push cx
pascal@19571 742 push ds
pascal@19571 743 jmp call_memcpy32
pascal@19571 744
pascal@20538 745 endp @storepage$qpul
pascal@19571 746
pascal@19571 747
pascal@19571 748 ifdef LARGE_IMAGES
pascal@19636 749 p386
pascal@19571 750 ;***************************************************************
pascal@20630 751 ;_fastcall void reset_bufv(bx:u32 *p);
pascal@19571 752 ;***************************************************************
pascal@20528 753 global @reset_bufv$qpul:near
pascal@20528 754 proc @reset_bufv$qpul near
pascal@19571 755
pascal@20524 756 mov [curdata],bx
pascal@19571 757 and [dword (data_himem bx).cacheidx],0
pascal@19571 758 ret
pascal@19571 759
pascal@20528 760 endp @reset_bufv$qpul
pascal@19571 761
pascal@19571 762 ;***************************************************************
pascal@19571 763 ;u32* prev_bufv();
pascal@19571 764 ;u32* prev_bufv();
pascal@19571 765 ;***************************************************************
pascal@19571 766 global _prev_bufv:near
pascal@19571 767 global _next_bufv:near
pascal@19571 768 proc _prev_bufv near
pascal@19571 769
pascal@19571 770 stc
pascal@19571 771 db 73h ; jnc
pascal@19571 772 _next_bufv:
pascal@19571 773 clc
pascal@20528 774 push si
pascal@20528 775 mov si,[curdata]
pascal@19571 776 sbb ax,ax
pascal@20527 777 cmc
pascal@20527 778 adc ax,[(data_himem si).cacheidx] ; -1/+1
pascal@19571 779 xor ecx,ecx
pascal@19571 780 test ax,0fc00h
pascal@19571 781 jz @@gotpage
pascal@19571 782 push ax ; FFFF / 0400
pascal@19571 783 sar ax,8 ; FFFC / 0004
pascal@19571 784 and al,0fch
pascal@19571 785 add [(data_himem si).pageidx],ax
pascal@19571 786 mov bx,[(data_himem si).pageidx]
pascal@19571 787 lea bx,[(data_himem bx+si).page]
pascal@19571 788 mov edx,ds
pascal@19571 789 shl edx,4
pascal@19571 790 lea cx,[(data_himem si).cache]
pascal@19571 791 add edx,ecx
pascal@19571 792 mov eax,[bx]
pascal@19571 793 or eax,eax
pascal@19571 794 jnz @@pageok
pascal@19571 795 pop ax
pascal@19571 796 xchg ax,bx
pascal@19571 797 pop si
pascal@19571 798 ret
pascal@19571 799 @@pageok:
pascal@19571 800 mov cx,4096
pascal@19571 801 call memcpy_imagez ; get page
pascal@19571 802 pop ax ; FFFF / 0400
pascal@19571 803 cbw
pascal@19571 804 shr ax,6 ; 03FF / 0000
pascal@19571 805 @@gotpage:
pascal@19571 806 mov [(data_himem si).cacheidx],ax
pascal@19571 807 shl ax,2
pascal@19571 808 xchg ax,bx
pascal@19571 809 lea ax,[(data_himem bx+si).cache]
pascal@19571 810 or bx,[(data_himem si).pageidx] ; !pageidx && !cacheidx
pascal@19571 811 jnz @@notfirst2
pascal@19571 812 xchg ax,si ; &first
pascal@19571 813 @@notfirst2:
pascal@19571 814 pop si
pascal@19571 815 ret
pascal@19571 816
pascal@19571 817 endp _prev_bufv
pascal@19571 818 endif
pascal@19571 819
pascal@20146 820 ifdef NO386
pascal@20146 821 p8086
pascal@20146 822 endif
pascal@19571 823
pascal@19571 824 ;***************************************************************
pascal@20630 825 ;_fastcall void open_image(bx:const char *name, ax:struct image_himem *m);
pascal@19515 826 ;***************************************************************
pascal@20528 827 global @open_image$qpxzcp11image_himem:near
pascal@20528 828 proc @open_image$qpxzcp11image_himem near
pascal@19515 829
pascal@20484 830 push di
pascal@20485 831 xchg ax,di
pascal@20538 832 ifdef EXTRA
pascal@20538 833 cmp [(image_himem di).fd],0 ; iso image/kernel ?
pascal@20538 834 jnz @@alreadydone
pascal@20538 835 endif
pascal@20484 836 mov [(image_himem di).state],bx
pascal@20484 837 push bx
pascal@20534 838 ifdef EXTRA
pascal@20538 839 cmp [(image_himem di).next_chunk],0 ; iso image/initrd ?
pascal@20538 840 jnz @@next
pascal@20534 841 endif
pascal@20534 842 mov [(image_himem di).next_chunk],offset next_chunk
pascal@19515 843 @@next:
pascal@19546 844 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@19515 845 ifndef NO386
pascal@19515 846 add eax,3
pascal@19515 847 and al,0FCh
pascal@19546 848 add [(image_himem di).size],eax ; m->size += m->chunk_size
pascal@19515 849 or eax,eax
pascal@19515 850 else
pascal@19515 851 add ax,3
pascal@19515 852 adc dx,0
pascal@19515 853 and al,0FCh
pascal@19546 854 add [word (image_himem di).size],ax ; m->size += m->chunk_size
pascal@19546 855 adc [word ((image_himem di).size)+2],dx
pascal@20520 856 or ax,dx
pascal@19515 857 endif
pascal@20520 858 jnz @@next
pascal@20484 859 pop [(image_himem di).state]
pascal@19546 860 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@20538 861 @@alreadydone:
pascal@20484 862 pop di
pascal@19515 863 ret
pascal@19515 864
pascal@20528 865 endp @open_image$qpxzcp11image_himem
pascal@19515 866
pascal@19515 867
pascal@19515 868 ;***************************************************************
pascal@20630 869 ;_fastcall int read_image(bx:struct image_himem *m);
pascal@19515 870 ;***************************************************************
pascal@20538 871 global @read_image$qp11image_himem:near
pascal@20538 872 proc @read_image$qp11image_himem near
pascal@19515 873
pascal@20539 874 push si di
pascal@20538 875 mov di,bx
pascal@20539 876 mov si,4096
pascal@20539 877 push si ; original size
pascal@19515 878 @@loop:
pascal@19538 879 ifndef NO386
pascal@20539 880 movzx ecx,si
pascal@19546 881 mov eax,[(image_himem di).chunk_size]
pascal@19538 882 cmp ecx,eax
pascal@19538 883 jb @@szok
pascal@19538 884 else
pascal@20539 885 mov cx,si
pascal@19546 886 mov ax,[word (image_himem di).chunk_size]
pascal@19538 887 cmp cx,ax
pascal@19515 888 jb @@szok
pascal@19546 889 cmp [word ((image_himem di).chunk_size)+2],0 ; hi m->chunk_size
pascal@19515 890 jne @@szok
pascal@20484 891 endif
pascal@19515 892 xchg ax,cx
pascal@19515 893 @@szok:
pascal@19538 894 jcxz image_done
pascal@20539 895 mov dx,offset _xfer_buf
pascal@20538 896 mov bx,[di]
pascal@20528 897 call @read$cxdxbx
pascal@19538 898 jc image_done
pascal@19515 899 xor cx,cx
pascal@20539 900 cwd ; ax < 8000h
pascal@19538 901 ifndef NO386
pascal@19538 902 cwde ; ax < 8000h
pascal@19546 903 sub [(image_himem di).chunk_size],eax
pascal@20541 904 xchg eax,ebx
pascal@19538 905 else
pascal@19546 906 sub [word (image_himem di).chunk_size],ax
pascal@20539 907 xchg ax,bx
pascal@19546 908 sbb [word ((image_himem di).chunk_size)+2],dx
pascal@19538 909 jnz @@fill
pascal@19546 910 cmp [word (image_himem di).chunk_size],dx
pascal@19538 911 endif
pascal@19538 912 jnz @@fill
pascal@20539 913 dec cx
pascal@19515 914 @@fill:
pascal@20539 915 test bl,3
pascal@19515 916 je @@filled
pascal@20539 917 mov [bx+_xfer_buf],dh
pascal@20539 918 inc bx
pascal@19515 919 jmp @@fill
pascal@19515 920 @@filled:
pascal@19538 921 ifndef NO386
pascal@20541 922 sub [(image_himem di).remaining],ebx
pascal@19538 923 else
pascal@20539 924 sub [word (image_himem di).remaining],bx
pascal@19546 925 sbb [word ((image_himem di).remaining)+2],dx
pascal@19538 926 endif
pascal@20541 927 sub si,bx
pascal@19538 928 pushf
pascal@20539 929 and cx,[(image_himem di).next_chunk]
pascal@20484 930 jcxz @@same_chunk
pascal@20539 931 call cx
pascal@19538 932 @@same_chunk:
pascal@19538 933 popf
pascal@19538 934 jnz @@loop
pascal@20484 935 image_done:
pascal@20528 936 pop ax ; original size
pascal@20539 937 sub ax,si
pascal@20539 938 pop di si
pascal@20538 939 ret
pascal@19515 940
pascal@20538 941 endp @read_image$qp11image_himem
pascal@19515 942
pascal@19515 943
pascal@19515 944 ;***************************************************************
pascal@20528 945 ;pascal unsigned long strtol(const char *s);
pascal@19515 946 ;***************************************************************
pascal@20528 947 global @strtol$qpxzc:near
pascal@20528 948 proc @strtol$qpxzc near
pascal@19515 949
pascal@20538 950 pop ax
pascal@20538 951 pop bx ; s
pascal@19515 952 push ax
pascal@20528 953 ifndef NO386
pascal@19515 954 xor ebx,ebx
pascal@19515 955 push si
pascal@19634 956 jcxz @@end
pascal@19515 957 mov si,cx
pascal@19515 958 xor ecx,ecx
pascal@19515 959 xor eax,eax
pascal@19515 960 lodsb
pascal@19634 961 mov dx,ax
pascal@19634 962 or al,20h
pascal@19634 963 cmp al,'n' ; vga=normal
pascal@19538 964 je @@vga
pascal@19538 965 dec cx
pascal@19634 966 cmp al,'e' ; vga=extended
pascal@19538 967 je @@vga
pascal@19538 968 dec cx
pascal@19634 969 cmp al,'a' ; vga=ask
pascal@19538 970 jne @@notvga
pascal@19538 971 @@vga:
pascal@19538 972 dec cx
pascal@19538 973 xchg ax,cx
pascal@19538 974 cwd
pascal@19634 975 jmp @@popsiret
pascal@19538 976 @@notvga:
pascal@19538 977 mov cx,10 ; radix
pascal@19634 978 xchg ax,dx
pascal@19515 979 cmp al,'+'
pascal@19515 980 je @@radixskip
pascal@19515 981 cmp al,'-'
pascal@19515 982 clc
pascal@19515 983 jne @@radixkeep
pascal@19515 984 stc
pascal@19515 985 @@radixskip:
pascal@19515 986 lodsb
pascal@19515 987 @@radixkeep:
pascal@19515 988 pushf
pascal@19515 989 cmp al,'0'
pascal@19515 990 jne @@radixok
pascal@19515 991 mov cl,8
pascal@19515 992 lodsb
pascal@19634 993 or al,20h
pascal@19634 994 cmp al,'x'
pascal@19515 995 jne @@radixok
pascal@19515 996 mov cl,16
pascal@19515 997 @@strtollp:
pascal@19515 998 lodsb
pascal@19515 999 @@radixok:
pascal@19634 1000 or al,20h
pascal@19515 1001 sub al,'0'
pascal@19515 1002 jb @@endstrtol
pascal@19515 1003 cmp al,9
pascal@19515 1004 jbe @@digitok
pascal@19515 1005 cmp al,'a'-'0'
pascal@19515 1006 jb @@endstrtol
pascal@19515 1007 sub al,'a'-'0'-10
pascal@19515 1008 @@digitok:
pascal@19515 1009 cmp al,cl
pascal@19515 1010 jae @@endstrtol
pascal@19515 1011 xchg eax,ebx
pascal@19515 1012 mul ecx
pascal@19515 1013 add eax,ebx
pascal@19515 1014 xchg eax,ebx
pascal@19515 1015 jmp @@strtollp
pascal@19515 1016 @@endstrtol:
pascal@19515 1017 mov cl,10
pascal@19515 1018 cmp al,'k'-'a'+10
pascal@19515 1019 je @@shift
pascal@19515 1020 mov cl,20
pascal@19515 1021 cmp al,'m'-'a'+10
pascal@19515 1022 je @@shift
pascal@19515 1023 mov cl,30
pascal@19515 1024 cmp al,'g'-'a'+10
pascal@19515 1025 jne @@noshift
pascal@19515 1026 @@shift:
pascal@19515 1027 shl ebx,cl
pascal@19515 1028 @@noshift:
pascal@19515 1029 popf
pascal@19515 1030 jnc @@end
pascal@19515 1031 neg ebx
pascal@19515 1032 @@end:
pascal@19515 1033 push ebx
pascal@19515 1034 pop ax
pascal@19515 1035 pop dx
pascal@19634 1036 @@popsiret:
pascal@19515 1037 pop si
pascal@19515 1038 else
pascal@19515 1039 push si
pascal@19515 1040 push di
pascal@19515 1041 xor ax,ax
pascal@19515 1042 cwd
pascal@19634 1043 jcxz @@goend
pascal@19515 1044 xchg ax,di
pascal@19515 1045 mov si,cx
pascal@19538 1046 lodsb
pascal@19634 1047 mov bx,ax
pascal@19634 1048 or al,20h
pascal@19538 1049 mov cx,-1
pascal@19634 1050 cmp al,'n' ; vga=normal
pascal@19538 1051 je @@vga
pascal@19538 1052 dec cx
pascal@19634 1053 cmp al,'e' ; vga=extended
pascal@19538 1054 je @@vga
pascal@19538 1055 dec cx
pascal@19634 1056 cmp al,'a' ; vga=ask
pascal@19538 1057 jne @@notvga
pascal@19538 1058 @@vga:
pascal@19538 1059 xchg ax,cx
pascal@19538 1060 @@goend:
pascal@19634 1061 jmp @@popdisiret
pascal@19538 1062 @@notvga:
pascal@19515 1063 mov cx,10 ; radix
pascal@19634 1064 xchg ax,bx
pascal@19515 1065 cmp al,'+'
pascal@19515 1066 je @@radixskip
pascal@19515 1067 cmp al,'-'
pascal@19515 1068 clc
pascal@19515 1069 jne @@radixkeep
pascal@19515 1070 stc
pascal@19515 1071 @@radixskip:
pascal@19515 1072 lodsb
pascal@19515 1073 @@radixkeep:
pascal@19515 1074 pushf
pascal@19515 1075 cmp al,'0'
pascal@19515 1076 jne @@radixok
pascal@19515 1077 mov cl,8
pascal@19515 1078 lodsb
pascal@20146 1079 or al,20h
pascal@19634 1080 cmp al,'x'
pascal@19515 1081 jne @@radixok
pascal@19515 1082 mov cl,16
pascal@19515 1083 @@strtollp:
pascal@19515 1084 lodsb
pascal@19515 1085 @@radixok:
pascal@19634 1086 or al,20h
pascal@19515 1087 sub al,'0'
pascal@19515 1088 jb @@endstrtol
pascal@19515 1089 cmp al,9
pascal@19515 1090 jbe @@digitok
pascal@19515 1091 cmp al,'a'-'0'
pascal@19515 1092 jb @@endstrtol
pascal@19515 1093 sub al,'a'-'0'-10
pascal@19515 1094 @@digitok:
pascal@19515 1095 cmp al,cl
pascal@19515 1096 jae @@endstrtol
pascal@19515 1097
pascal@19515 1098 push ax
pascal@19515 1099 push si
pascal@19515 1100 push dx
pascal@19515 1101 xchg ax,di
pascal@19515 1102 mul cx
pascal@19515 1103 xchg ax,di
pascal@19515 1104 xchg ax,dx
pascal@19515 1105 xchg ax,si
pascal@19515 1106 pop ax
pascal@19515 1107 mul cx
pascal@19515 1108 add ax,si
pascal@19515 1109 pop si
pascal@19515 1110 xchg ax,dx
pascal@19515 1111 pop ax
pascal@19515 1112 mov ah,0
pascal@19515 1113 add di,ax
pascal@19515 1114 adc dx,0
pascal@19515 1115
pascal@19515 1116 jmp @@strtollp
pascal@19515 1117 @@endstrtol:
pascal@19515 1118 mov cl,10
pascal@19515 1119 cmp al,'k'-'a'+10
pascal@19515 1120 je @@shift
pascal@19515 1121 mov cl,20
pascal@19515 1122 cmp al,'m'-'a'+10
pascal@19515 1123 je @@shift
pascal@19515 1124 mov cl,30
pascal@19515 1125 cmp al,'g'-'a'+10
pascal@19515 1126 jne @@noshift
pascal@19515 1127 @@shift:
pascal@19515 1128 rcl di,1
pascal@19515 1129 shl dx,1
pascal@19515 1130 loop @@shift
pascal@19515 1131 @@noshift:
pascal@19515 1132 popf
pascal@19515 1133 jnc @@end
pascal@19515 1134 not dx
pascal@19515 1135 neg di
pascal@19515 1136 jne @@end
pascal@19515 1137 inc dx
pascal@19515 1138 @@end:
pascal@19515 1139 xchg ax,di
pascal@19634 1140 @@popdisiret:
pascal@19515 1141 pop di
pascal@19515 1142 pop si
pascal@19515 1143 endif
pascal@20528 1144 strtol_ret:
pascal@19515 1145 ret
pascal@19515 1146
pascal@20528 1147 endp @strtol$qpxzc
pascal@19515 1148
pascal@19515 1149
pascal@19515 1150 ifdef NO386
pascal@19515 1151 ;***************************************************************
pascal@19515 1152 ;u16 topseg();
pascal@19515 1153 ;***************************************************************
pascal@19515 1154 global _topseg:near
pascal@19515 1155 proc _topseg near
pascal@19515 1156
pascal@19515 1157 int 12h
pascal@19515 1158 jnc @@max640k
pascal@19515 1159 mov ax,640 ; 9000
pascal@19515 1160 @@max640k:
pascal@19634 1161 dec ax
pascal@19515 1162 and al,0C0h
pascal@19515 1163 mov cl,6
pascal@19515 1164 shl ax,cl
pascal@19515 1165 ret
pascal@19515 1166
pascal@19515 1167 endp _topseg
pascal@19515 1168 endif
pascal@19515 1169
pascal@19825 1170 ifdef EXTRA
pascal@19825 1171 p8086
pascal@19825 1172 ;***************************************************************
pascal@19825 1173 ;char *progname(void)
pascal@19825 1174 ;***************************************************************
pascal@19825 1175 global _progname:near
pascal@19825 1176 proc _progname near
pascal@19825 1177
pascal@19825 1178 push si di es
pascal@19825 1179 mov ah,30h
pascal@19825 1180 int 21h
pascal@19875 1181 xor di,di
pascal@19825 1182 cmp al,3
pascal@19874 1183 mov ax,di
pascal@19825 1184 jb @@skip
pascal@19873 1185 ;mov es,[cs:2Ch]
pascal@19874 1186 mov es,[di+2Ch]
pascal@20146 1187 mov cx,sp ; big enough
pascal@19870 1188 @@loop:
pascal@19825 1189 repne
pascal@19825 1190 scasb
pascal@19825 1191 scasb
pascal@19870 1192 jne @@loop
pascal@19870 1193 inc di
pascal@19870 1194 inc di
pascal@19870 1195 mov si,di ; progname @es:di
pascal@19870 1196 repne
pascal@19870 1197 scasb
pascal@19870 1198 mov cx,di
pascal@19874 1199 sub cx,si ; progname len
pascal@19870 1200 call malloc_or_die ; keep cx
pascal@19870 1201 mov di,ax
pascal@19825 1202 push ds
pascal@19825 1203 push es
pascal@19825 1204 pop ds
pascal@19825 1205 pop es
pascal@19870 1206 rep
pascal@19870 1207 movsb
pascal@19870 1208 push es
pascal@19825 1209 pop ds
pascal@19825 1210 @@skip:
pascal@19825 1211 pop es di si
pascal@19825 1212 ret
pascal@19825 1213
pascal@19825 1214 endp _progname
pascal@19825 1215
pascal@19825 1216
pascal@19825 1217 ;***************************************************************
pascal@20630 1218 ;_fastcall void chdirname(bx:char *path)
pascal@19825 1219 ;***************************************************************
pascal@20528 1220 global @chdirname$qpzc:near
pascal@20528 1221 proc @chdirname$qpzc near
pascal@19825 1222
pascal@20146 1223 cmp [byte bx+1],3Ah ; ':'
pascal@19825 1224 jne @@nodisk
pascal@19875 1225 mov dl,20h
pascal@19875 1226 or dl,[bx]
pascal@19825 1227 sub dl,61h
pascal@19825 1228 mov ah,0Eh
pascal@19825 1229 int 21h
pascal@19825 1230 inc bx
pascal@19825 1231 inc bx
pascal@19825 1232 @@nodisk:
pascal@19825 1233 xor cx,cx
pascal@19825 1234 @@next:
pascal@19825 1235 mov al,[bx]
pascal@19825 1236 cmp al,5Ch
pascal@19825 1237 jne @@tsteos
pascal@19875 1238 mov dx,bx
pascal@19875 1239 inc cx
pascal@19825 1240 @@tsteos:
pascal@19825 1241 inc bx
pascal@19825 1242 or al,al
pascal@19825 1243 jnz @@next
pascal@19825 1244 jcxz @@end
pascal@19875 1245 mov bx,dx
pascal@19825 1246 push [word bx]
pascal@19825 1247 mov [bx],al
pascal@20630 1248 ifdef LONG_FILENAME
pascal@19875 1249 stc
pascal@20146 1250 mov ax,713Bh ; chdir long filename (ds:dx)
pascal@19875 1251 int 21h
pascal@20630 1252 jnc @@chdirdone
pascal@20630 1253 endif
pascal@20146 1254 mov ah,3Bh ; chdir(ds:dx)
pascal@19875 1255 int 21h
pascal@20510 1256 @@chdirdone:
pascal@19825 1257 pop [word bx]
pascal@19825 1258 @@end:
pascal@19825 1259 ret
pascal@19825 1260
pascal@20528 1261 endp @chdirname$qpzc
pascal@19825 1262
pascal@19825 1263
pascal@19825 1264 ;***************************************************************
pascal@20630 1265 ;_fastcall char *ultoa(axdx:unsigned long n);
pascal@19825 1266 ;***************************************************************
pascal@20528 1267 global @ultoa$qul:near
pascal@20528 1268 proc @ultoa$qul near
pascal@19825 1269
pascal@20538 1270 xchg ax,cx
pascal@20538 1271 xchg ax,dx ; AX:CX = n
pascal@19825 1272 push si
pascal@19825 1273 mov si,10
pascal@19825 1274 mov bx,offset ultoabuf+11
pascal@19825 1275 @@loop:
pascal@19825 1276 dec bx
pascal@19825 1277 xor dx,dx
pascal@19825 1278 div si ; DX:AX = 0000:hi(n)
pascal@19825 1279 xchg ax,cx ; CX = hi(n)/10
pascal@19825 1280 div si ; DX:AX = hi(n)%10:lo(n)
pascal@19825 1281 xchg ax,cx ; CX = lo(n/10)
pascal@20528 1282 ; AX = hi(n)/10 = hi(n/10)
pascal@20528 1283 mov [byte bx],'0'
pascal@20528 1284 add [bx],dl ; DL = n%10
pascal@20528 1285 mov dx,ax
pascal@20528 1286 or dx,cx
pascal@19825 1287 jnz @@loop
pascal@19825 1288 xchg ax,bx
pascal@19825 1289 pop si
pascal@19825 1290 ret
pascal@19825 1291
pascal@20528 1292 endp @ultoa$qul
pascal@19825 1293
pascal@19825 1294
pascal@19825 1295 ;***************************************************************
pascal@20630 1296 ;_fastcall unsigned long kver2ul(bx:char *kernel_version);
pascal@19825 1297 ;***************************************************************
pascal@20528 1298 global @kver2ul$qpzc:near
pascal@20528 1299 proc @kver2ul$qpzc near
pascal@19825 1300
pascal@20146 1301 push si
pascal@20538 1302 mov si,bx
pascal@20146 1303 xor bx,bx
pascal@20146 1304 mov cx,304h
pascal@19825 1305 @@number:
pascal@19825 1306 xor ax,ax
pascal@20146 1307 cwd
pascal@19825 1308 @@digit:
pascal@19825 1309 shl al,cl
pascal@19825 1310 shl ax,cl
pascal@19825 1311 lodsb
pascal@19825 1312 sub al,30h
pascal@19825 1313 cmp al,9
pascal@19825 1314 jbe @@digit
pascal@20146 1315 mov dl,bh
pascal@20146 1316 mov bh,bl
pascal@20146 1317 mov bl,ah
pascal@20146 1318 dec ch
pascal@20146 1319 jnz @@number
pascal@20146 1320 xchg ax,bx
pascal@20146 1321 pop si
pascal@19825 1322 kver2ulret:
pascal@19825 1323 ret
pascal@19825 1324
pascal@20528 1325 endp @kver2ul$qpzc
pascal@19825 1326
pascal@20528 1327 endif
pascal@19825 1328
pascal@19825 1329 ;***************************************************************
pascal@19825 1330 ;void try_default_args();
pascal@19825 1331 ;***************************************************************
pascal@20528 1332 ifdef EXTRA
pascal@20528 1333
pascal@19825 1334 global _try_default_args:near
pascal@19825 1335 proc _try_default_args near
pascal@19825 1336
pascal@19825 1337 mov bx,offset tazboot_cmd
pascal@19825 1338 call open
pascal@19825 1339 jc kver2ulret
pascal@19825 1340 mov cx,4096
pascal@19825 1341 mov di,[_heap_top]
pascal@19825 1342 extrn read_cmdline:near
pascal@19825 1343 jmp near read_cmdline ; read_cmdline(ax,di,cx)
pascal@19825 1344
pascal@19825 1345 endp _try_default_args
pascal@19825 1346
pascal@20528 1347 endif
pascal@19825 1348
pascal@19515 1349 ends _TEXT
pascal@19515 1350
pascal@19515 1351 end
pascal@19515 1352
pascal@19515 1353 ;###### END OF FILE ############################################
pascal@19825 1354