wok annotate linld/stuff/src/CRTL.ASM @ rev 20520

Up sshguard (2.2.0)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Mon Nov 05 11:52:27 2018 +0100 (2018-11-05)
parents a5b6457fb890
children d9dafe685dd0
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@19546 23 msg_crlf db 13,10,0
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@19515 34 global _no_exit:byte
pascal@19515 35 _no_exit db ?
pascal@19515 36 filecnt db ? ; in fact 0 minus file count...
pascal@19515 37 nextfilename dw ?
pascal@19571 38 ifdef LARGE_IMAGES
pascal@19571 39 curdata dw ?
pascal@19571 40 endif
pascal@19825 41 ifdef EXTRA
pascal@19825 42 ultoabuf db 12 dup (?)
pascal@19825 43 endif
pascal@19515 44
pascal@19515 45 ends _BSS
pascal@19515 46
pascal@19515 47 segment _TEXT byte public use16 'CODE'
pascal@19515 48
pascal@19515 49 ;***************************************************************
pascal@19538 50 ;char* strcpy(const char* a, const char* b);
pascal@19580 51 ;char* strcat(const char* a, const char* b);
pascal@19634 52 ;char* strcatb(const char* a, const char* b);
pascal@19538 53 ;***************************************************************
pascal@19826 54 global _strcatb:near
pascal@19826 55 proc _strcatb near
pascal@19538 56
pascal@19826 57 ifdef EXTRA
pascal@20142 58 mov cl,7Fh
pascal@19580 59 db 0bbh ; mov bx,imm opcode
pascal@19580 60 global _strcat:near
pascal@19580 61 _strcat:
pascal@20142 62 mov cl,80h
pascal@19634 63 db 0bbh ; mov bx,imm opcode
pascal@19826 64 global _strcpy:near
pascal@19826 65 _strcpy:
pascal@20142 66 xor cx,cx
pascal@19826 67 endif
pascal@19538 68 pop ax ;caller return address
pascal@20142 69 pop dx ; a
pascal@19538 70 pop bx ; b
pascal@19538 71 push bx
pascal@20142 72 push dx
pascal@19538 73 push ax
pascal@19538 74 push si
pascal@20142 75 mov si,dx
pascal@19826 76 ifdef EXTRA
pascal@20142 77 jcxz @@nocat
pascal@19826 78 endif
pascal@19538 79 @@catlp:
pascal@19538 80 lodsb
pascal@19538 81 cmp al,0
pascal@19538 82 jne @@catlp
pascal@19538 83 dec si
pascal@19826 84 ifdef EXTRA
pascal@20142 85 cmp dx,si
pascal@20142 86 adc al,cl ; set S when dx != si or cl = 80
pascal@20142 87 mov al,20h
pascal@20142 88 jns @@cpyhead
pascal@19826 89 endif
pascal@19538 90 @@nocat:
pascal@19538 91 @@cpylp:
pascal@20142 92 mov al,[bx]
pascal@20142 93 inc bx
pascal@20142 94 @@cpyhead:
pascal@19538 95 mov [si],al
pascal@19538 96 inc si
pascal@19538 97 cmp al,0
pascal@19538 98 jne @@cpylp
pascal@20142 99 strfound:
pascal@20142 100 xchg ax,dx
pascal@20142 101 strend:
pascal@19538 102 pop si
pascal@20142 103 ret
pascal@19538 104
pascal@19826 105 endp _strcatb
pascal@19538 106
pascal@19538 107
pascal@20146 108 ifdef EXTRA
pascal@20146 109 p8086
pascal@20146 110 ;***************************************************************
pascal@20146 111 ;char strstr(const char* a,const char* b);
pascal@20146 112 ;***************************************************************
pascal@20146 113 global _strstr:near
pascal@20146 114 proc _strstr near
pascal@20146 115
pascal@20146 116 pop ax ;caller return address
pascal@20146 117 pop dx ; a
pascal@20146 118 pop cx ; b
pascal@20146 119 push cx
pascal@20146 120 push dx
pascal@20146 121 push ax
pascal@20146 122 push si
pascal@20146 123 @@loop:
pascal@20146 124 xor ax,ax
pascal@20146 125 mov si,dx
pascal@20146 126 cmp [si],al ; *a
pascal@20146 127 jz strend ; return ax = NULL
pascal@20146 128 mov bx,cx
pascal@20146 129 @@match:
pascal@20146 130 or ah,[bx] ; *b
pascal@20146 131 jz strfound
pascal@20146 132 inc bx
pascal@20146 133 lodsb
pascal@20146 134 sub ah,al
pascal@20146 135 jz @@match
pascal@20146 136 inc dx
pascal@20146 137 jmp @@loop
pascal@20146 138
pascal@20146 139 endp _strstr
pascal@20146 140
pascal@20146 141
pascal@20146 142 ;***************************************************************
pascal@20146 143 ;int strcmp(const char* a,const char* b);
pascal@20146 144 ;***************************************************************
pascal@20146 145 global _strcmp:near
pascal@20146 146 proc _strcmp near
pascal@20146 147
pascal@20146 148 pop cx ;caller return address
pascal@20146 149 pop bx ; a
pascal@20146 150 pop ax ; b
pascal@20146 151 push ax
pascal@20146 152 push bx
pascal@20146 153 push cx
pascal@20146 154 push si
pascal@20146 155 xchg ax,si
pascal@20146 156 dec bx
pascal@20146 157 @@lp:
pascal@20146 158 inc bx
pascal@20146 159 lodsb
pascal@20146 160 sub al,[bx]
pascal@20146 161 jnz @@out
pascal@20510 162 or al,al
pascal@20146 163 jnz @@lp
pascal@20146 164 @@out:
pascal@20146 165 cbw
pascal@20146 166 pop si
pascal@20146 167 ret
pascal@20146 168
pascal@20146 169 endp _strcmp
pascal@20146 170 endif
pascal@20146 171
pascal@20146 172
pascal@19538 173 ;***************************************************************
pascal@19515 174 ;void puts(const char* s):
pascal@19515 175 ;***************************************************************
pascal@19515 176 global _puts:near
pascal@19515 177 proc _puts near
pascal@19515 178
pascal@19515 179 pop ax ;caller return address
pascal@19515 180 pop bx ; s
pascal@19515 181 push bx
pascal@19515 182 push ax
pascal@20486 183 ; global puts:near ; puts(bx)
pascal@19515 184 puts:
pascal@20510 185 call @@putsz
pascal@19515 186 mov bx,offset msg_crlf
pascal@20510 187 jmp @@putsz
pascal@20510 188 @@putcz:
pascal@20160 189 mov ah,2
pascal@20146 190 int 21h
pascal@20510 191 @@putsz:
pascal@20160 192 mov dl,[bx]
pascal@20146 193 inc bx
pascal@20160 194 or dl,dl
pascal@20510 195 jne @@putcz ; ZF=1 (for malloc failure)
pascal@19538 196 ret
pascal@19515 197
pascal@19515 198 endp _puts
pascal@19515 199
pascal@19515 200
pascal@19515 201 ;***************************************************************
pascal@19538 202 ;int fileattr(const char* name);
pascal@19538 203 ;***************************************************************
pascal@19538 204 global _fileattr:near
pascal@19538 205 proc _fileattr near
pascal@19538 206
pascal@19538 207 pop ax ;caller return address
pascal@19538 208 pop dx ; name
pascal@19538 209 push dx
pascal@19538 210 push ax
pascal@19538 211 mov ax,4300h
pascal@19538 212 int 21h
pascal@19538 213 xchg ax,cx
pascal@19538 214 jmp chkc
pascal@19538 215
pascal@19538 216 endp _fileattr
pascal@19538 217
pascal@19538 218
pascal@19538 219 ;***************************************************************
pascal@19546 220 ;int open(const char* name, int flags=O_RDONLY);
pascal@19515 221 ;***************************************************************
pascal@19515 222 global _open:near
pascal@19515 223 proc _open near
pascal@19515 224
pascal@19546 225 pop ax ;caller return address
pascal@19515 226 pop bx ; name
pascal@19546 227 push bx
pascal@19515 228 push ax
pascal@19546 229 global open:near ; open(bx)
pascal@19515 230 open:
pascal@19515 231 mov dx,bx
pascal@20146 232 ;mov cl,0 ; attribute mask
pascal@20146 233 mov ax,3d00h ; read-only+compatibility
pascal@19515 234 dos:
pascal@19515 235 int 21h
pascal@19538 236 chkc:
pascal@19515 237 jnc doret
pascal@19515 238 fail:
pascal@19515 239 sbb ax,ax ; ax=-1 CF
pascal@19515 240 cwd
pascal@19515 241 doret:
pascal@19515 242 ifndef NO386
pascal@19538 243 push dx ; see next_chunk:lseek
pascal@19538 244 push ax
pascal@19538 245 pop eax
pascal@19515 246 endif
pascal@19515 247 ret
pascal@19515 248
pascal@19515 249 endp _open
pascal@19515 250
pascal@19515 251
pascal@19515 252 ;***************************************************************
pascal@19515 253 ;int close(int fd);
pascal@19515 254 ;***************************************************************
pascal@19515 255 global _close:near
pascal@19515 256 proc _close near
pascal@19515 257
pascal@19515 258 pop ax ;caller return address
pascal@19515 259 pop bx ; fd
pascal@19515 260 push bx
pascal@19515 261 push ax
pascal@19515 262 global close:near ; close(bx)
pascal@19515 263 close:
pascal@19515 264 mov ah,3Eh
pascal@19515 265 or bx,bx
pascal@19515 266 jnz dos
pascal@19515 267 ret
pascal@19515 268
pascal@19515 269 endp _close
pascal@19515 270
pascal@19515 271
pascal@19515 272 ;***************************************************************
pascal@19515 273 ;int read(int fd, void* data, int sz);
pascal@19580 274 ;int write(int fd, const void* data, int sz);
pascal@19515 275 ;***************************************************************
pascal@19515 276 global _read:near
pascal@19515 277 proc _read near
pascal@19515 278
pascal@20146 279 ifdef WRITE
pascal@19580 280 stc
pascal@19634 281 db 0B0h ; mov al,im
pascal@19580 282 global _write:near
pascal@19580 283 clc
pascal@20146 284 endif
pascal@19580 285 pop ax ;caller return address
pascal@19580 286 pop bx ; fd
pascal@19580 287 pop dx ; data
pascal@19515 288 pop cx ; sz
pascal@19515 289 push cx
pascal@19515 290 push dx
pascal@19580 291 push bx
pascal@19580 292 push ax
pascal@20146 293 ifdef WRITE
pascal@19580 294 mov ah,40h
pascal@19580 295 sbb ah,0
pascal@20146 296 else
pascal@20146 297 mov ah,3Fh
pascal@20146 298 endif
pascal@19515 299 jcxz fail
pascal@19515 300 jmp dos
pascal@19515 301
pascal@19515 302 endp _read
pascal@19515 303
pascal@20146 304 proc _lseekset near
pascal@20147 305 ;ifdef EXTRA
pascal@19515 306 ;***************************************************************
pascal@19825 307 ;long lseekset(int fd, unsigned long sz);
pascal@19515 308 ;***************************************************************
pascal@19899 309
pascal@19571 310 global _lseekset:near
pascal@19515 311
pascal@19515 312 pop ax ;caller return address
pascal@19515 313 pop bx ; fd
pascal@19571 314 pop dx ; sz lo
pascal@19571 315 pop cx ; sz hi
pascal@19571 316 push cx
pascal@20146 317 push dx
pascal@19515 318 push bx
pascal@19515 319 push ax
pascal@20147 320 ;endif
pascal@20486 321 ; global lseekset:near
pascal@19571 322 lseekset:
pascal@19571 323 clc
pascal@19634 324 db 0B0h ; mov al,im
pascal@20486 325 ; global rewind:near
pascal@19634 326 rewind: ; rewind(bx)
pascal@19634 327 stc
pascal@19571 328 mov ax,4200h
pascal@19571 329 jnc dos
pascal@19571 330 lseek0: ; lseek0(bx,ax=dir)
pascal@19571 331 cwd
pascal@19571 332 xor cx,cx
pascal@19515 333 jmp dos
pascal@19515 334
pascal@19571 335 endp _lseekset
pascal@19825 336
pascal@19825 337 ifdef EXTRA
pascal@19825 338 struc isostate ; struct isostate {
pascal@19825 339 fd dw ? ; 0 int fd;
pascal@19825 340 fileofs dd ? ; 2 unsigned long fileofs;
pascal@19825 341 filesize dd ? ; 6 unsigned long filesize;
pascal@19825 342 filemod dw ? ;10 unsigned short filemod;
pascal@19825 343 filename dw ? ;12 char *filename;
pascal@19825 344 dirofs dd ? ;14 unsigned long dirofs;
pascal@19825 345 dirsize dd ? ;16 unsigned long dirsize;
pascal@19825 346 curdirofs dd ? ;20 unsigned long curdirofs;
pascal@19825 347 curdirsize dd ? ;24 unsigned long curdirsize;
pascal@19825 348 curpos dd ? ;28 unsigned long curpos;
pascal@19825 349 ends ; } isostate;
pascal@19825 350 ;***************************************************************
pascal@19825 351 ;unsigned long isolseek(const unsigned long *offset);
pascal@19825 352 ;***************************************************************
pascal@19825 353 global _isolseek:near
pascal@19825 354 proc _isolseek near
pascal@19825 355
pascal@19825 356 pop ax
pascal@19825 357 pop bx
pascal@19825 358 push bx
pascal@19825 359 push ax
pascal@19825 360 mov dx,[bx]
pascal@19825 361 mov cx,[bx+2]
pascal@19825 362 extrn _isostate:isostate
pascal@19825 363 mov bx,[_isostate.fd]
pascal@19825 364 jmp lseekset ; (bx=fd, sz=cx:dx)
pascal@19825 365
pascal@19825 366 endp _isolseek
pascal@19825 367 endif
pascal@19515 368
pascal@19515 369
pascal@19515 370 ;***************************************************************
pascal@19515 371 ;int strhead(const char* a,const char* b);
pascal@19515 372 ;***************************************************************
pascal@19515 373 global _strhead:near
pascal@19515 374 proc _strhead near
pascal@19515 375
pascal@19515 376 pop cx ;caller return address
pascal@19634 377 pop bx ; a
pascal@19634 378 pop ax ; b
pascal@19634 379 push ax
pascal@19515 380 push bx
pascal@19515 381 push cx
pascal@19515 382 @@loop:
pascal@19634 383 xchg ax,bx
pascal@19515 384 mov cl,[bx] ; cl = *b++
pascal@19515 385 inc bx
pascal@19515 386 or cl,cl ; clear C
pascal@19515 387 jz fail ; return 0
pascal@19515 388 xchg ax,bx
pascal@19515 389 xor cl,[bx] ; cl -= *a++
pascal@19634 390 inc bx
pascal@19515 391 and cl,0dfh ; case insensitive
pascal@19634 392 jz @@loop
pascal@19634 393 ret ; return b (is not 0)
pascal@19515 394
pascal@19515 395 endp _strhead
pascal@19515 396
pascal@19515 397
pascal@19515 398 ;***************************************************************
pascal@19515 399 ;char* malloc_or_die(unsigned size);
pascal@19515 400 ;***************************************************************
pascal@19515 401 global _malloc_or_die:near
pascal@19515 402 proc _malloc_or_die near
pascal@19515 403
pascal@19515 404 pop ax ;caller return address
pascal@19515 405 pop cx ; size
pascal@19515 406 push cx
pascal@19515 407 push ax
pascal@19515 408 global malloc_or_die:near ; malloc_or_die(cx)
pascal@19515 409 malloc_or_die:
pascal@20510 410 mov ax,[_heap_top] ; return value
pascal@20510 411 mov bx,sp
pascal@20510 412 add bh,-14h ; MIN_STACK=_1k+PAGE_SIZE
pascal@20510 413 sub bx,ax ; can't overflow
pascal@20510 414 cmp bx,cx
pascal@20456 415 mov bx,offset msg_malloc
pascal@20510 416 jb die
pascal@20510 417 add [_heap_top],cx ; _BEG has zero'd heap
pascal@19515 418 ret
pascal@19515 419
pascal@19515 420 endp _malloc_or_die
pascal@19515 421
pascal@19515 422
pascal@19515 423 ;***************************************************************
pascal@19515 424 ;int die(const char* msg);
pascal@19538 425 ;int exit();
pascal@19515 426 ;int abort();
pascal@19515 427 ;***************************************************************
pascal@19515 428 global _die:near
pascal@19515 429 proc _die near
pascal@19515 430
pascal@19515 431 pop ax ;caller return address
pascal@19515 432 pop bx ; s
pascal@20520 433 ;push bx
pascal@20520 434 ;push ax
pascal@19515 435 global die:near ; die(bx)
pascal@19515 436 die:
pascal@19515 437 call puts
pascal@20486 438 ; global _exit:near
pascal@19538 439 _exit:
pascal@19515 440 mov al,[_no_exit]
pascal@19515 441 cmp al,0
pascal@19515 442 jne @@hang
pascal@19515 443 extrn exit:near
pascal@19515 444 inc ax
pascal@19515 445 jmp near exit
pascal@19515 446 @@hang:
pascal@19515 447 mov bx, offset msg_hang
pascal@19515 448 call puts
pascal@20486 449 ; global _abort:near
pascal@19515 450 _abort:
pascal@19515 451 cli
pascal@19515 452 @@stop:
pascal@19515 453 hlt
pascal@19515 454 jmp @@stop
pascal@19515 455
pascal@19515 456 endp _die
pascal@19515 457
pascal@19546 458 struc image_himem ;struct image_himem {
pascal@19546 459 fd dw ? ; 0 int fd;
pascal@19546 460 fallback dd ? ; 2 u32 fallback;
pascal@19546 461 size dd ? ; 6 u32 size;
pascal@19546 462 remaining dd ? ;10 u32 remaining;
pascal@19546 463 buf dd ? ;14 u32 buf;
pascal@19546 464 bufv dw ? ;18 u32 *bufv;
pascal@19546 465 errmsg dw ? ;20 char *errmsg;
pascal@19546 466 chunk_size dd ? ;22 u32 chunk_size;
pascal@19546 467 next_chunk dw ? ;26 void (*next_chunk)(struct image_himem *);
pascal@19546 468 state dw ? ;28 u16 state;
pascal@19546 469 fd2close dw ? ;30 u16 fd2close;
pascal@19546 470 ends ;};
pascal@19515 471
pascal@19636 472 ;***************************************************************
pascal@20484 473 ;long next_chunk(struct image_himem *di);
pascal@19636 474 ;***************************************************************
pascal@19636 475 proc next_chunk near
pascal@19636 476
pascal@19636 477 push si
pascal@19636 478 mov bx,[(image_himem di).fd]
pascal@19636 479 call close
pascal@19636 480 ifndef NO386
pascal@19636 481 xor eax,eax
pascal@19636 482 else
pascal@19636 483 xor ax,ax
pascal@20485 484 cwd
pascal@19636 485 endif
pascal@19636 486 mov [(image_himem di).fd],ax
pascal@19636 487 mov bx,[(image_himem di).state]
pascal@19636 488 cmp al,[bx] ; ""
pascal@19636 489 jz @@end
pascal@19636 490 mov si,bx
pascal@19636 491 @@scan:
pascal@19636 492 lodsb
pascal@19636 493 mov cx,si
pascal@19636 494 cmp al,','
pascal@19636 495 jz @@eos
pascal@19636 496 cmp al,0
pascal@19636 497 jnz @@scan
pascal@19636 498 dec cx
pascal@19636 499 @@eos:
pascal@19636 500 mov [(image_himem di).state],cx
pascal@19636 501 dec si
pascal@19636 502 push [word si]
pascal@20485 503 mov [byte si],ah ; set temp eos
pascal@19636 504 call open
pascal@19636 505 pop [word si] ; restore string
pascal@19636 506 jc @@die
pascal@19636 507 mov [(image_himem di).fd],ax
pascal@19636 508 mov [(image_himem di).fd2close],ax
pascal@19636 509 xchg ax,bx
pascal@19636 510 mov ax,4202h ; SEEK_END
pascal@19636 511 call lseek0
pascal@19636 512 @@die:
pascal@19636 513 mov bx,[(image_himem di).errmsg]
pascal@19636 514 jc die
pascal@19636 515 mov bx,[(image_himem di).fd]
pascal@19636 516 ifndef NO386
pascal@19636 517 push eax
pascal@19636 518 call rewind
pascal@19636 519 pop eax
pascal@19636 520 @@end:
pascal@19636 521 mov [(image_himem di).chunk_size],eax
pascal@19636 522 else
pascal@19636 523 push ax
pascal@19636 524 push dx
pascal@19636 525 call rewind
pascal@19636 526 pop dx
pascal@19636 527 pop ax
pascal@19636 528 @@end:
pascal@19636 529 mov [word (image_himem di).chunk_size],ax
pascal@19636 530 mov [word ((image_himem di).chunk_size)+2],dx
pascal@19636 531 endif
pascal@19636 532 pop si
pascal@19636 533 ret
pascal@19636 534
pascal@19636 535 endp next_chunk
pascal@19636 536
pascal@19636 537
pascal@19571 538 ifdef LARGE_IMAGES
pascal@19571 539 struc data_himem ;struct data_himem {
pascal@19571 540 first dd ? ; 0 u32 first;
pascal@19571 541 cacheidx dw ? ; 4 int cacheidx;
pascal@19571 542 pageidx dw ? ; 6 int pageidx;
pascal@19571 543 cache dd 1024 dup(?) ; 8 int cache;
pascal@19571 544 page dd 1024 dup(?) ;4104 int page;
pascal@19571 545 ends ;}; // size=8200
pascal@19571 546 endif
pascal@19571 547
pascal@19515 548 ;***************************************************************
pascal@19538 549 ;u32* malloc_bufv_or_die(struct image_himem *m);
pascal@19538 550 ;***************************************************************
pascal@19538 551 global _malloc_bufv_or_die:near
pascal@19538 552 proc _malloc_bufv_or_die near
pascal@19538 553
pascal@19636 554 p386
pascal@19538 555 pop bx ;caller return address
pascal@19538 556 pop ax
pascal@19538 557 push ax
pascal@19538 558 push bx
pascal@19538 559 push si
pascal@19538 560 xchg ax,si
pascal@19571 561 ifdef LARGE_IMAGES
pascal@19571 562 mov cx,[word ((image_himem si).size) + 2]
pascal@19571 563 shr cx,4 ; pages index size = size >> 20
pascal@19571 564 add cx,8+4096+8
pascal@19571 565 call malloc_or_die
pascal@19571 566 mov ecx,4096+4095 ; cnt = 1+(m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19571 567 add ecx,[(image_himem si).size]
pascal@19571 568 shr ecx,12
pascal@19571 569 mov [curdata],ax
pascal@19571 570 else
pascal@19546 571 mov ecx,[(image_himem si).size]
pascal@19538 572 dec ecx
pascal@19538 573 shr ecx,12
pascal@19538 574 inc cx ; cnt = (m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19538 575 push cx
pascal@19538 576 inc cx ; cnt+1
pascal@19538 577 shl cx,2 ; bufv => vcpi => vm86
pascal@19538 578 ; our malloc zeroes allocated mem: bufv[cnt]=0;
pascal@19538 579 ; Allocate pages, storing addrs in addrbuf
pascal@19538 580 call malloc_or_die
pascal@19571 581 pop cx
pascal@19571 582 push ax
pascal@19571 583 endif
pascal@19546 584 mov [(image_himem si).bufv],ax
pascal@19571 585 xchg ax,si
pascal@19538 586 @@vcpi_alloc:
pascal@19538 587 xor edx,edx
pascal@19538 588 mov ax,0DE04h
pascal@19538 589 int 67h
pascal@19538 590 or ah,ah
pascal@19538 591 mov bx,offset vcpi_alloc_err
pascal@19571 592 jnz die
pascal@19571 593 ; for (i = cnt-1; i >= 0; i--)
pascal@19571 594 ifdef LARGE_IMAGES
pascal@19571 595 mov eax,ecx
pascal@19571 596 dec eax
pascal@19571 597 else
pascal@19571 598 mov ax,cx
pascal@19571 599 dec ax
pascal@19571 600 cwde
pascal@19571 601 endif
pascal@19571 602 shl eax,12 ; i*_4k
pascal@19571 603 ; if (edx < pm.fallback+i*_4k && edx >= pm.fallback) again
pascal@19899 604 extrn _imgs
pascal@19899 605 mov bx,offset _imgs+2
pascal@19571 606 push eax
pascal@19571 607 add eax,[bx-2+2]
pascal@19571 608 cmp eax,edx ; pm.fallback+i*_4k <= edx ?
pascal@19571 609 pop eax ; i*_4k
pascal@19571 610 jbe @@pmok
pascal@19571 611 cmp edx,[bx-2+2] ; edx >= pm.fallback ?
pascal@19571 612 jae @@vcpi_alloc
pascal@19571 613 @@pmok:
pascal@19571 614 ; if (edx >= initrd.fallback+i*_4k && edx < initrd.fallback+initrd.size) again
pascal@19899 615 extrn _imgs
pascal@19899 616 mov bx,offset _imgs+32+2
pascal@19571 617 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 618 cmp eax,edx ; initrd.fallback+i*_4k > edx ?
pascal@19571 619 ja @@initrdok
pascal@19571 620 mov eax,[bx-2+6] ; initrd.size
pascal@19571 621 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 622 cmp eax,edx ; initrd.fallback+initrd.size > edx ?
pascal@19571 623 @@jnc_vcpi_alloc:
pascal@19571 624 ja @@vcpi_alloc
pascal@19571 625 @@initrdok:
pascal@19571 626 ifdef LARGE_IMAGES
pascal@19571 627 cmp [(data_himem si).first],0
pascal@19571 628 jne @@notfirst
pascal@19571 629 mov [(data_himem si).first],edx
pascal@19571 630 @@notfirst:
pascal@19571 631 mov bx,[(data_himem si).cacheidx]
pascal@19571 632 cmp bh,4
pascal@19571 633 jae @@nextpage
pascal@19571 634 shl bx,2
pascal@19571 635 inc [(data_himem si).cacheidx]
pascal@19571 636 mov [(data_himem bx+si).cache],edx
pascal@19571 637 loopd @@vcpi_alloc
pascal@19571 638 mov [(data_himem bx+si).cache],ecx ; last is 0
pascal@19571 639 @@nextpage:
pascal@19571 640 and [(data_himem si).cacheidx],0
pascal@19571 641 mov bx,[(data_himem si).pageidx]
pascal@19571 642 mov [(data_himem bx+si).page],edx
pascal@19571 643 add [(data_himem si).pageidx],4
pascal@19571 644 push cx
pascal@19571 645 lea cx,[(data_himem si).cache]
pascal@19571 646 ifdef NO386
pascal@19571 647 push edx
pascal@19571 648 pop dx
pascal@19571 649 pop ax
pascal@19571 650 endif
pascal@19571 651 call storepage ; storepage(edx,cx)
pascal@19571 652 pop cx
pascal@19571 653 or ecx,ecx ; clear C
pascal@19571 654 jnz @@jnc_vcpi_alloc
pascal@19571 655 mov [dword (data_himem si).cacheidx],ecx
pascal@19571 656 xchg ax,si
pascal@19571 657 else
pascal@19571 658 mov [si],edx
pascal@19571 659 lodsd ; si=+4
pascal@19538 660 loop @@vcpi_alloc
pascal@19538 661 pop ax
pascal@19571 662 endif
pascal@19538 663 pop si
pascal@19538 664 ret
pascal@19636 665 ifdef NO386
pascal@19636 666 p8086
pascal@19636 667 endif
pascal@19538 668
pascal@19538 669 endp _malloc_bufv_or_die
pascal@19538 670
pascal@19538 671
pascal@19538 672 ;***************************************************************
pascal@19571 673 ; void memcpy_image(struct image_himem *m);
pascal@19515 674 ;***************************************************************
pascal@19571 675 global _memcpy_image:near
pascal@19571 676 proc _memcpy_image near
pascal@19515 677
pascal@19571 678 pop ax ;caller return address
pascal@19515 679 pop bx
pascal@19571 680 push bx
pascal@19571 681 push ax
pascal@19571 682 ifndef NO386
pascal@19571 683 mov edx,[(image_himem bx).fallback]
pascal@19571 684 mov eax,[(image_himem bx).buf]
pascal@19571 685 cmp eax,edx ; if (m->fallback != m->buf)
pascal@19571 686 jz @@skip ; memcpy32(m->fallback,0,m->buf,m->size)
pascal@19571 687 ifdef LARGE_IMAGES
pascal@19571 688 mov ecx,[(image_himem bx).size]
pascal@20146 689 memcpy_imagez: ; memcpy_imagez(edx,eax,ecx)
pascal@19571 690 push ecx
pascal@19571 691 else
pascal@19571 692 push [(image_himem bx).size]
pascal@19571 693 endif
pascal@19571 694 push eax
pascal@19571 695 push 0
pascal@19571 696 call_memcpy32:
pascal@19571 697 push edx
pascal@19571 698 else
pascal@19571 699 mov ax,[word ((image_himem bx).fallback)]
pascal@19571 700 mov dx,[word ((image_himem bx).fallback)+2]
pascal@19571 701 mov cx,[word ((image_himem bx).buf)]
pascal@19571 702 cmp ax,cx ; if (m->fallback != m->buf)
pascal@19571 703 jnz @@do
pascal@19571 704 cmp dx,[word ((image_himem bx).buf)+2]
pascal@19571 705 jz @@skip ; memcpy32(m->fallback,0,m->buf,m->size)
pascal@19571 706 @@do:
pascal@19571 707 push [word ((image_himem bx).size)+2]
pascal@19571 708 push [word ((image_himem bx).size)]
pascal@19571 709 push [word ((image_himem bx).buf)+2]
pascal@19571 710 push cx
pascal@19571 711 xor cx,cx
pascal@19571 712 push cx
pascal@19571 713 call_memcpy32:
pascal@19571 714 push dx
pascal@19571 715 push ax
pascal@19571 716 ifdef LARGE_IMAGES
pascal@19571 717 jmp @@memcpy
pascal@20146 718 memcpy_imagez: ; memcpy_imagez(edx,eax,ecx)
pascal@19636 719 p386
pascal@19571 720 push ecx
pascal@19571 721 push eax
pascal@19571 722 push 0
pascal@19571 723 push edx
pascal@19636 724 ifdef NO386
pascal@19636 725 p8086
pascal@19636 726 endif
pascal@19571 727 endif
pascal@19571 728 endif
pascal@19571 729 @@memcpy:
pascal@19571 730 extrn _memcpy32:near
pascal@19571 731 call near _memcpy32
pascal@19571 732 add sp,14
pascal@19571 733 @@skip:
pascal@19571 734 ret
pascal@19571 735
pascal@19571 736 endp _memcpy_image
pascal@19571 737
pascal@19571 738 ;***************************************************************
pascal@19571 739 ;void storepage(u32 *dst, u16 src);
pascal@19571 740 ;***************************************************************
pascal@19571 741 global _storepage:near
pascal@19571 742 proc _storepage near
pascal@19571 743
pascal@19571 744 pop ax ;caller return address
pascal@19571 745 pop bx
pascal@19571 746 pop cx
pascal@19571 747 push cx
pascal@19571 748 push bx
pascal@19571 749 push ax
pascal@19571 750 ifndef NO386
pascal@19571 751 mov edx,[bx]
pascal@19571 752 else
pascal@19571 753 mov ax,[bx]
pascal@19571 754 mov dx,[bx+2]
pascal@19571 755 endif
pascal@20146 756 storepage: ; storepage(edx,cx)
pascal@19571 757 ifndef NO386
pascal@19571 758 push 0
pascal@19571 759 push 4096
pascal@19571 760 push 0
pascal@19571 761 else
pascal@19571 762 xor bx,bx
pascal@19571 763 push bx
pascal@19571 764 mov bh,4096/256
pascal@19571 765 push bx
pascal@19571 766 xor bx,bx
pascal@19571 767 push bx
pascal@19571 768 endif
pascal@19571 769 push cx
pascal@19571 770 push ds
pascal@19571 771 jmp call_memcpy32
pascal@19571 772
pascal@19571 773 endp _storepage
pascal@19571 774
pascal@19571 775
pascal@19571 776 ifdef LARGE_IMAGES
pascal@19636 777 p386
pascal@19571 778 ;***************************************************************
pascal@19571 779 ;void reset_bufv(u32 *p);
pascal@19571 780 ;***************************************************************
pascal@19571 781 global _reset_bufv:near
pascal@19571 782 proc _reset_bufv near
pascal@19571 783
pascal@20510 784 pop bx ;caller return address
pascal@20510 785 pop ax
pascal@20510 786 push ax
pascal@19634 787 push bx
pascal@20510 788 mov [curdata],ax
pascal@19571 789 and [dword (data_himem bx).cacheidx],0
pascal@19571 790 ret
pascal@19571 791
pascal@19571 792 endp _reset_bufv
pascal@19571 793
pascal@19571 794 ;***************************************************************
pascal@19571 795 ;u32* prev_bufv();
pascal@19571 796 ;u32* prev_bufv();
pascal@19571 797 ;***************************************************************
pascal@19571 798 global _prev_bufv:near
pascal@19571 799 global _next_bufv:near
pascal@19571 800 proc _prev_bufv near
pascal@19571 801
pascal@19571 802 stc
pascal@19571 803 db 73h ; jnc
pascal@19571 804 _next_bufv:
pascal@19571 805 clc
pascal@19571 806 sbb ax,ax
pascal@19571 807 stc
pascal@19571 808 rcl ax,1 ; -1/+1
pascal@19571 809 xor ecx,ecx
pascal@19571 810 push si
pascal@19571 811 mov si,[curdata]
pascal@19571 812 add ax,[(data_himem si).cacheidx]
pascal@19571 813 test ax,0fc00h
pascal@19571 814 jz @@gotpage
pascal@19571 815 push ax ; FFFF / 0400
pascal@19571 816 sar ax,8 ; FFFC / 0004
pascal@19571 817 and al,0fch
pascal@19571 818 add [(data_himem si).pageidx],ax
pascal@19571 819 mov bx,[(data_himem si).pageidx]
pascal@19571 820 lea bx,[(data_himem bx+si).page]
pascal@19571 821 mov edx,ds
pascal@19571 822 shl edx,4
pascal@19571 823 lea cx,[(data_himem si).cache]
pascal@19571 824 add edx,ecx
pascal@19571 825 mov eax,[bx]
pascal@19571 826 or eax,eax
pascal@19571 827 jnz @@pageok
pascal@19571 828 pop ax
pascal@19571 829 xchg ax,bx
pascal@19571 830 pop si
pascal@19571 831 ret
pascal@19571 832 @@pageok:
pascal@19571 833 mov cx,4096
pascal@19571 834 call memcpy_imagez ; get page
pascal@19571 835 pop ax ; FFFF / 0400
pascal@19571 836 cbw
pascal@19571 837 shr ax,6 ; 03FF / 0000
pascal@19571 838 @@gotpage:
pascal@19571 839 mov [(data_himem si).cacheidx],ax
pascal@19571 840 shl ax,2
pascal@19571 841 xchg ax,bx
pascal@19571 842 lea ax,[(data_himem bx+si).cache]
pascal@19571 843 or bx,[(data_himem si).pageidx] ; !pageidx && !cacheidx
pascal@19571 844 jnz @@notfirst2
pascal@19571 845 xchg ax,si ; &first
pascal@19571 846 @@notfirst2:
pascal@19571 847 pop si
pascal@19571 848 ret
pascal@19571 849
pascal@19571 850 endp _prev_bufv
pascal@19571 851 endif
pascal@19571 852
pascal@20146 853 ifdef NO386
pascal@20146 854 p8086
pascal@20146 855 endif
pascal@19571 856
pascal@19571 857 ;***************************************************************
pascal@19515 858 ;void open_image(const char *name, struct image_himem *m);
pascal@19515 859 ;***************************************************************
pascal@19515 860 global _open_image:near
pascal@19515 861 proc _open_image near
pascal@19515 862
pascal@20485 863 pop cx ;caller return address
pascal@20484 864 pop bx ; name
pascal@20485 865 pop ax ; m
pascal@20485 866 push ax
pascal@20485 867 push bx
pascal@20484 868 push cx
pascal@20484 869 push di
pascal@20485 870 xchg ax,di
pascal@19571 871 mov [(image_himem di).next_chunk],offset next_chunk
pascal@20484 872 mov [(image_himem di).state],bx
pascal@20484 873 push bx
pascal@19515 874 @@next:
pascal@19546 875 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@19515 876 ifndef NO386
pascal@19515 877 add eax,3
pascal@19515 878 and al,0FCh
pascal@19546 879 add [(image_himem di).size],eax ; m->size += m->chunk_size
pascal@19515 880 or eax,eax
pascal@19515 881 else
pascal@19515 882 add ax,3
pascal@19515 883 adc dx,0
pascal@19515 884 and al,0FCh
pascal@19546 885 add [word (image_himem di).size],ax ; m->size += m->chunk_size
pascal@19546 886 adc [word ((image_himem di).size)+2],dx
pascal@20520 887 or ax,dx
pascal@19515 888 endif
pascal@20520 889 jnz @@next
pascal@20484 890 pop [(image_himem di).state]
pascal@19546 891 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@20484 892 pop di
pascal@19515 893 ret
pascal@19515 894
pascal@19515 895 endp _open_image
pascal@19515 896
pascal@19515 897
pascal@19515 898 ;***************************************************************
pascal@20484 899 ;int read_image(struct image_himem *m, char* data, int sz);
pascal@19515 900 ;***************************************************************
pascal@19515 901 global _read_image:near
pascal@19515 902 proc _read_image near
pascal@19515 903
pascal@19515 904 arg m :word, \
pascal@19515 905 data :word, \
pascal@19515 906 sz :word = PARAM_SIZE
pascal@19515 907
pascal@19515 908 push bp
pascal@19515 909 mov bp,sp
pascal@20484 910 push di
pascal@19515 911 ifndef NO386
pascal@19515 912 push 0 ; return value
pascal@19515 913 else
pascal@19515 914 xor ax,ax
pascal@19515 915 push ax
pascal@19515 916 endif
pascal@19515 917 mov di,[m]
pascal@19515 918 @@loop:
pascal@19538 919 ifndef NO386
pascal@20484 920 movzx ecx,[word sz]
pascal@19546 921 mov eax,[(image_himem di).chunk_size]
pascal@19538 922 cmp ecx,eax
pascal@19538 923 jb @@szok
pascal@19538 924 else
pascal@19538 925 mov cx,[word sz]
pascal@19546 926 mov ax,[word (image_himem di).chunk_size]
pascal@19538 927 cmp cx,ax
pascal@19515 928 jb @@szok
pascal@19546 929 cmp [word ((image_himem di).chunk_size)+2],0 ; hi m->chunk_size
pascal@19515 930 jne @@szok
pascal@20484 931 endif
pascal@19515 932 xchg ax,cx
pascal@19515 933 @@szok:
pascal@19538 934 jcxz image_done
pascal@19538 935 push cx
pascal@19515 936 push [word data]
pascal@19515 937 push [word di]
pascal@19515 938 call _read
pascal@19538 939 pop dx
pascal@19515 940 pop bx
pascal@20484 941 pop cx
pascal@19538 942 jc image_done
pascal@19515 943 add bx,ax
pascal@19515 944 xor cx,cx
pascal@19538 945 ifndef NO386
pascal@19538 946 cwde ; ax < 8000h
pascal@19546 947 sub [(image_himem di).chunk_size],eax
pascal@19538 948 else
pascal@19538 949 cwd ; ax < 8000h
pascal@19546 950 sub [word (image_himem di).chunk_size],ax
pascal@19546 951 sbb [word ((image_himem di).chunk_size)+2],dx
pascal@19538 952 jnz @@fill
pascal@19546 953 cmp [word (image_himem di).chunk_size],dx
pascal@19538 954 endif
pascal@19538 955 jnz @@fill
pascal@19538 956 dec cx
pascal@19515 957 @@fill:
pascal@19515 958 test al,3
pascal@19515 959 je @@filled
pascal@20484 960 mov [bx],dh
pascal@19515 961 inc bx
pascal@19515 962 inc ax
pascal@19515 963 jmp @@fill
pascal@19515 964 @@filled:
pascal@19538 965 ifndef NO386
pascal@19546 966 sub [(image_himem di).remaining],eax
pascal@19538 967 else
pascal@19546 968 sub [word (image_himem di).remaining],ax
pascal@19546 969 sbb [word ((image_himem di).remaining)+2],dx
pascal@19538 970 endif
pascal@20484 971 add [bp-2-2],ax
pascal@19515 972 add [word data],ax
pascal@19515 973 sub [word sz],ax
pascal@19538 974 pushf
pascal@20484 975 jcxz @@same_chunk
pascal@20484 976 call [(image_himem di).next_chunk]
pascal@19538 977 @@same_chunk:
pascal@19538 978 popf
pascal@19538 979 jnz @@loop
pascal@20484 980 image_done:
pascal@20484 981 pop ax
pascal@20484 982 pop di bp
pascal@20484 983 ret
pascal@19515 984
pascal@19515 985 endp _read_image
pascal@19515 986
pascal@19515 987
pascal@19515 988 ;***************************************************************
pascal@19515 989 ;unsigned long strtol(const char *s);
pascal@19515 990 ;***************************************************************
pascal@19515 991 global _strtol:near
pascal@19515 992 proc _strtol near
pascal@19515 993
pascal@19515 994 ifndef NO386
pascal@19515 995 pop ax ;caller return address
pascal@19515 996 pop cx ; s
pascal@19515 997 push cx
pascal@19515 998 push ax
pascal@19515 999 xor ebx,ebx
pascal@19515 1000 push si
pascal@19634 1001 jcxz @@end
pascal@19515 1002 mov si,cx
pascal@19515 1003 xor ecx,ecx
pascal@19515 1004 xor eax,eax
pascal@19515 1005 lodsb
pascal@19634 1006 mov dx,ax
pascal@19634 1007 or al,20h
pascal@19634 1008 cmp al,'n' ; vga=normal
pascal@19538 1009 je @@vga
pascal@19538 1010 dec cx
pascal@19634 1011 cmp al,'e' ; vga=extended
pascal@19538 1012 je @@vga
pascal@19538 1013 dec cx
pascal@19634 1014 cmp al,'a' ; vga=ask
pascal@19538 1015 jne @@notvga
pascal@19538 1016 @@vga:
pascal@19538 1017 dec cx
pascal@19538 1018 xchg ax,cx
pascal@19538 1019 cwd
pascal@19634 1020 jmp @@popsiret
pascal@19538 1021 @@notvga:
pascal@19538 1022 mov cx,10 ; radix
pascal@19634 1023 xchg ax,dx
pascal@19515 1024 cmp al,'+'
pascal@19515 1025 je @@radixskip
pascal@19515 1026 cmp al,'-'
pascal@19515 1027 clc
pascal@19515 1028 jne @@radixkeep
pascal@19515 1029 stc
pascal@19515 1030 @@radixskip:
pascal@19515 1031 lodsb
pascal@19515 1032 @@radixkeep:
pascal@19515 1033 pushf
pascal@19515 1034 cmp al,'0'
pascal@19515 1035 jne @@radixok
pascal@19515 1036 mov cl,8
pascal@19515 1037 lodsb
pascal@19634 1038 or al,20h
pascal@19634 1039 cmp al,'x'
pascal@19515 1040 jne @@radixok
pascal@19515 1041 mov cl,16
pascal@19515 1042 @@strtollp:
pascal@19515 1043 lodsb
pascal@19515 1044 @@radixok:
pascal@19634 1045 or al,20h
pascal@19515 1046 sub al,'0'
pascal@19515 1047 jb @@endstrtol
pascal@19515 1048 cmp al,9
pascal@19515 1049 jbe @@digitok
pascal@19515 1050 cmp al,'a'-'0'
pascal@19515 1051 jb @@endstrtol
pascal@19515 1052 sub al,'a'-'0'-10
pascal@19515 1053 @@digitok:
pascal@19515 1054 cmp al,cl
pascal@19515 1055 jae @@endstrtol
pascal@19515 1056 xchg eax,ebx
pascal@19515 1057 mul ecx
pascal@19515 1058 add eax,ebx
pascal@19515 1059 xchg eax,ebx
pascal@19515 1060 jmp @@strtollp
pascal@19515 1061 @@endstrtol:
pascal@19515 1062 mov cl,10
pascal@19515 1063 cmp al,'k'-'a'+10
pascal@19515 1064 je @@shift
pascal@19515 1065 mov cl,20
pascal@19515 1066 cmp al,'m'-'a'+10
pascal@19515 1067 je @@shift
pascal@19515 1068 mov cl,30
pascal@19515 1069 cmp al,'g'-'a'+10
pascal@19515 1070 jne @@noshift
pascal@19515 1071 @@shift:
pascal@19515 1072 shl ebx,cl
pascal@19515 1073 @@noshift:
pascal@19515 1074 popf
pascal@19515 1075 jnc @@end
pascal@19515 1076 neg ebx
pascal@19515 1077 @@end:
pascal@19515 1078 push ebx
pascal@19515 1079 pop ax
pascal@19515 1080 pop dx
pascal@19634 1081 @@popsiret:
pascal@19515 1082 pop si
pascal@19515 1083 else
pascal@19515 1084 pop ax ;caller return address
pascal@19515 1085 pop cx ; s
pascal@19515 1086 push cx
pascal@19515 1087 push ax
pascal@19515 1088 push si
pascal@19515 1089 push di
pascal@19515 1090 xor ax,ax
pascal@19515 1091 cwd
pascal@19634 1092 jcxz @@goend
pascal@19515 1093 xchg ax,di
pascal@19515 1094 mov si,cx
pascal@19538 1095 lodsb
pascal@19634 1096 mov bx,ax
pascal@19634 1097 or al,20h
pascal@19538 1098 mov cx,-1
pascal@19634 1099 cmp al,'n' ; vga=normal
pascal@19538 1100 je @@vga
pascal@19538 1101 dec cx
pascal@19634 1102 cmp al,'e' ; vga=extended
pascal@19538 1103 je @@vga
pascal@19538 1104 dec cx
pascal@19634 1105 cmp al,'a' ; vga=ask
pascal@19538 1106 jne @@notvga
pascal@19538 1107 @@vga:
pascal@19538 1108 xchg ax,cx
pascal@19538 1109 @@goend:
pascal@19634 1110 jmp @@popdisiret
pascal@19538 1111 @@notvga:
pascal@19515 1112 mov cx,10 ; radix
pascal@19634 1113 xchg ax,bx
pascal@19515 1114 cmp al,'+'
pascal@19515 1115 je @@radixskip
pascal@19515 1116 cmp al,'-'
pascal@19515 1117 clc
pascal@19515 1118 jne @@radixkeep
pascal@19515 1119 stc
pascal@19515 1120 @@radixskip:
pascal@19515 1121 lodsb
pascal@19515 1122 @@radixkeep:
pascal@19515 1123 pushf
pascal@19515 1124 cmp al,'0'
pascal@19515 1125 jne @@radixok
pascal@19515 1126 mov cl,8
pascal@19515 1127 lodsb
pascal@20146 1128 or al,20h
pascal@19634 1129 cmp al,'x'
pascal@19515 1130 jne @@radixok
pascal@19515 1131 mov cl,16
pascal@19515 1132 @@strtollp:
pascal@19515 1133 lodsb
pascal@19515 1134 @@radixok:
pascal@19634 1135 or al,20h
pascal@19515 1136 sub al,'0'
pascal@19515 1137 jb @@endstrtol
pascal@19515 1138 cmp al,9
pascal@19515 1139 jbe @@digitok
pascal@19515 1140 cmp al,'a'-'0'
pascal@19515 1141 jb @@endstrtol
pascal@19515 1142 sub al,'a'-'0'-10
pascal@19515 1143 @@digitok:
pascal@19515 1144 cmp al,cl
pascal@19515 1145 jae @@endstrtol
pascal@19515 1146
pascal@19515 1147 push ax
pascal@19515 1148 push si
pascal@19515 1149 push dx
pascal@19515 1150 xchg ax,di
pascal@19515 1151 mul cx
pascal@19515 1152 xchg ax,di
pascal@19515 1153 xchg ax,dx
pascal@19515 1154 xchg ax,si
pascal@19515 1155 pop ax
pascal@19515 1156 mul cx
pascal@19515 1157 add ax,si
pascal@19515 1158 pop si
pascal@19515 1159 xchg ax,dx
pascal@19515 1160 pop ax
pascal@19515 1161 mov ah,0
pascal@19515 1162 add di,ax
pascal@19515 1163 adc dx,0
pascal@19515 1164
pascal@19515 1165 jmp @@strtollp
pascal@19515 1166 @@endstrtol:
pascal@19515 1167 mov cl,10
pascal@19515 1168 cmp al,'k'-'a'+10
pascal@19515 1169 je @@shift
pascal@19515 1170 mov cl,20
pascal@19515 1171 cmp al,'m'-'a'+10
pascal@19515 1172 je @@shift
pascal@19515 1173 mov cl,30
pascal@19515 1174 cmp al,'g'-'a'+10
pascal@19515 1175 jne @@noshift
pascal@19515 1176 @@shift:
pascal@19515 1177 rcl di,1
pascal@19515 1178 shl dx,1
pascal@19515 1179 loop @@shift
pascal@19515 1180 @@noshift:
pascal@19515 1181 popf
pascal@19515 1182 jnc @@end
pascal@19515 1183 not dx
pascal@19515 1184 neg di
pascal@19515 1185 jne @@end
pascal@19515 1186 inc dx
pascal@19515 1187 @@end:
pascal@19515 1188 xchg ax,di
pascal@19634 1189 @@popdisiret:
pascal@19515 1190 pop di
pascal@19515 1191 pop si
pascal@19515 1192 endif
pascal@19515 1193 ret
pascal@19515 1194
pascal@19515 1195 endp _strtol
pascal@19515 1196
pascal@19515 1197
pascal@19515 1198 ifdef NO386
pascal@19515 1199 ;***************************************************************
pascal@19515 1200 ;u16 topseg();
pascal@19515 1201 ;***************************************************************
pascal@19515 1202 global _topseg:near
pascal@19515 1203 proc _topseg near
pascal@19515 1204
pascal@19515 1205 int 12h
pascal@19515 1206 jnc @@max640k
pascal@19515 1207 mov ax,640 ; 9000
pascal@19515 1208 @@max640k:
pascal@19634 1209 dec ax
pascal@19515 1210 and al,0C0h
pascal@19515 1211 mov cl,6
pascal@19515 1212 shl ax,cl
pascal@19515 1213 ret
pascal@19515 1214
pascal@19515 1215 endp _topseg
pascal@19515 1216 endif
pascal@19515 1217
pascal@19825 1218 ifdef EXTRA
pascal@19825 1219 p8086
pascal@19825 1220 ;***************************************************************
pascal@19825 1221 ;char *progname(void)
pascal@19825 1222 ;***************************************************************
pascal@19825 1223 global _progname:near
pascal@19825 1224 proc _progname near
pascal@19825 1225
pascal@19825 1226 push si di es
pascal@19825 1227 mov ah,30h
pascal@19825 1228 int 21h
pascal@19875 1229 xor di,di
pascal@19825 1230 cmp al,3
pascal@19874 1231 mov ax,di
pascal@19825 1232 jb @@skip
pascal@19873 1233 ;mov es,[cs:2Ch]
pascal@19874 1234 mov es,[di+2Ch]
pascal@20146 1235 mov cx,sp ; big enough
pascal@19870 1236 @@loop:
pascal@19825 1237 repne
pascal@19825 1238 scasb
pascal@19825 1239 scasb
pascal@19870 1240 jne @@loop
pascal@19870 1241 inc di
pascal@19870 1242 inc di
pascal@19870 1243 mov si,di ; progname @es:di
pascal@19870 1244 repne
pascal@19870 1245 scasb
pascal@19870 1246 mov cx,di
pascal@19874 1247 sub cx,si ; progname len
pascal@19870 1248 call malloc_or_die ; keep cx
pascal@19870 1249 mov di,ax
pascal@19825 1250 push ds
pascal@19825 1251 push es
pascal@19825 1252 pop ds
pascal@19825 1253 pop es
pascal@19870 1254 rep
pascal@19870 1255 movsb
pascal@19870 1256 push es
pascal@19825 1257 pop ds
pascal@19825 1258 @@skip:
pascal@19825 1259 pop es di si
pascal@19825 1260 ret
pascal@19825 1261
pascal@19825 1262 endp _progname
pascal@19825 1263
pascal@19825 1264
pascal@19825 1265 ;***************************************************************
pascal@19875 1266 ;void chdirname(char *path)
pascal@19825 1267 ;***************************************************************
pascal@19825 1268 global _chdirname:near
pascal@19825 1269 proc _chdirname near
pascal@19825 1270
pascal@19825 1271 pop ax
pascal@19825 1272 pop bx
pascal@19825 1273 push bx
pascal@19825 1274 push ax
pascal@19825 1275
pascal@20146 1276 cmp [byte bx+1],3Ah ; ':'
pascal@19825 1277 jne @@nodisk
pascal@19875 1278 mov dl,20h
pascal@19875 1279 or dl,[bx]
pascal@19825 1280 sub dl,61h
pascal@19825 1281 mov ah,0Eh
pascal@19825 1282 int 21h
pascal@19825 1283 inc bx
pascal@19825 1284 inc bx
pascal@19825 1285 @@nodisk:
pascal@19825 1286 xor cx,cx
pascal@19825 1287 @@next:
pascal@19825 1288 mov al,[bx]
pascal@19825 1289 cmp al,5Ch
pascal@19825 1290 jne @@tsteos
pascal@19875 1291 mov dx,bx
pascal@19875 1292 inc cx
pascal@19825 1293 @@tsteos:
pascal@19825 1294 inc bx
pascal@19825 1295 or al,al
pascal@19825 1296 jnz @@next
pascal@19825 1297 jcxz @@end
pascal@19875 1298 mov bx,dx
pascal@19825 1299 push [word bx]
pascal@19825 1300 mov [bx],al
pascal@19875 1301 stc
pascal@20146 1302 mov ax,713Bh ; chdir long filename (ds:dx)
pascal@19875 1303 int 21h
pascal@20146 1304 mov ah,3Bh ; chdir(ds:dx)
pascal@20510 1305 jnc @@chdirdone
pascal@19875 1306 int 21h
pascal@20510 1307 @@chdirdone:
pascal@19825 1308 pop [word bx]
pascal@19825 1309 @@end:
pascal@19825 1310 ret
pascal@19825 1311
pascal@19825 1312 endp _chdirname
pascal@19825 1313
pascal@19825 1314
pascal@19825 1315 ;***************************************************************
pascal@19825 1316 ;char *ultoa(unsigned long n);
pascal@19825 1317 ;***************************************************************
pascal@19825 1318 global _ultoa:near
pascal@19825 1319 proc _ultoa near
pascal@19825 1320
pascal@19825 1321 pop ax
pascal@19825 1322 pop cx
pascal@19825 1323 pop dx
pascal@19825 1324 push dx
pascal@19825 1325 push cx
pascal@19825 1326 push ax ; DX:CX = n
pascal@19825 1327 push si
pascal@19825 1328 mov si,10
pascal@19825 1329 mov bx,offset ultoabuf+11
pascal@19825 1330 @@loop:
pascal@19825 1331 dec bx
pascal@19825 1332 xchg ax,dx
pascal@19825 1333 xor dx,dx
pascal@19825 1334 div si ; DX:AX = 0000:hi(n)
pascal@19825 1335 xchg ax,cx ; CX = hi(n)/10
pascal@19825 1336 div si ; DX:AX = hi(n)%10:lo(n)
pascal@19825 1337 xchg ax,cx ; CX = lo(n/10)
pascal@19825 1338 xchg ax,dx ; DX = hi(n)/10 = hi(n/10)
pascal@19825 1339 add al,'0'
pascal@19825 1340 mov [bx],al
pascal@19825 1341 mov ax,cx
pascal@19825 1342 or ax,dx
pascal@19825 1343 jnz @@loop
pascal@19825 1344 xchg ax,bx
pascal@19825 1345 pop si
pascal@19825 1346 ret
pascal@19825 1347
pascal@19825 1348 endp _ultoa
pascal@19825 1349
pascal@19825 1350
pascal@19825 1351 ;***************************************************************
pascal@19825 1352 ;unsigned long kver2ul(char *kernel_version);
pascal@19825 1353 ;***************************************************************
pascal@19825 1354 global _kver2ul:near
pascal@19825 1355 proc _kver2ul near
pascal@19825 1356
pascal@19825 1357 pop bx
pascal@19825 1358 pop ax
pascal@19825 1359 push ax
pascal@19825 1360 push bx
pascal@20146 1361 push si
pascal@19825 1362 xchg ax,si
pascal@20146 1363 xor bx,bx
pascal@20146 1364 mov cx,304h
pascal@19825 1365 @@number:
pascal@19825 1366 xor ax,ax
pascal@20146 1367 cwd
pascal@19825 1368 @@digit:
pascal@19825 1369 shl al,cl
pascal@19825 1370 shl ax,cl
pascal@19825 1371 lodsb
pascal@19825 1372 sub al,30h
pascal@19825 1373 cmp al,9
pascal@19825 1374 jbe @@digit
pascal@20146 1375 mov dl,bh
pascal@20146 1376 mov bh,bl
pascal@20146 1377 mov bl,ah
pascal@20146 1378 dec ch
pascal@20146 1379 jnz @@number
pascal@20146 1380 xchg ax,bx
pascal@20146 1381 pop si
pascal@19825 1382 kver2ulret:
pascal@19825 1383 ret
pascal@19825 1384
pascal@19825 1385 endp _kver2ul
pascal@19825 1386
pascal@19825 1387
pascal@19825 1388 ;***************************************************************
pascal@19825 1389 ;void try_default_args();
pascal@19825 1390 ;***************************************************************
pascal@19825 1391 global _try_default_args:near
pascal@19825 1392 proc _try_default_args near
pascal@19825 1393
pascal@19825 1394 mov bx,offset tazboot_cmd
pascal@19825 1395 call open
pascal@19825 1396 jc kver2ulret
pascal@19825 1397 mov cx,4096
pascal@19825 1398 mov di,[_heap_top]
pascal@19825 1399 push cx
pascal@19825 1400 extrn read_cmdline:near
pascal@19825 1401 jmp near read_cmdline ; read_cmdline(ax,di,cx)
pascal@19825 1402
pascal@19825 1403 endp _try_default_args
pascal@19825 1404
pascal@19825 1405 endif
pascal@19825 1406
pascal@19515 1407 ends _TEXT
pascal@19515 1408
pascal@19515 1409 end
pascal@19515 1410
pascal@19515 1411 ;###### END OF FILE ############################################
pascal@19825 1412