wok annotate linld/stuff/src/CRTL.ASM @ rev 20142

linld: tiny shrink
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sat Nov 11 10:57:19 2017 +0100 (2017-11-11)
parents 9e8f9b54bd83
children d78aa8a969f4
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@19546 19 global _heap_top:word
pascal@19546 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@19538 24 vcpi_alloc_err db "vcpi "
pascal@19571 25 msg_malloc db "malloc failure",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@19538 108 ;***************************************************************
pascal@19538 109 ;void* malloc(unsigned sz);
pascal@19538 110 ;***************************************************************
pascal@19538 111 global _malloc:near
pascal@19538 112 proc _malloc near
pascal@19538 113
pascal@19538 114 pop ax ;caller return address
pascal@19538 115 pop cx ; sz
pascal@19538 116 push cx
pascal@19538 117 push ax
pascal@19538 118 global malloc:near ; malloc(cx)
pascal@19571 119 malloc: ; keep CX, use AX,BX
pascal@19538 120 mov ax,[_heap_top]
pascal@19571 121 mov bx,-1400h ; MIN_STACK=_1k+PAGE_SIZE
pascal@19571 122 add bx,sp
pascal@19571 123 sub bx,ax ; can't overflow
pascal@19571 124 cmp bx,cx
pascal@19538 125 mov bx,offset msg_malloc
pascal@19538 126 jb puts
pascal@19538 127 add [_heap_top],cx ; _BEG has zero'd heap
pascal@19538 128 ;mov bx,ax
pascal@19538 129 @@zalloc:
pascal@19538 130 ;mov [byte bx],0
pascal@19538 131 ;inc bx ; ZF=0
pascal@19538 132 ;loop @@zalloc
pascal@19538 133 ret
pascal@19538 134
pascal@19538 135 endp _malloc
pascal@19538 136
pascal@19538 137
pascal@19538 138 ;***************************************************************
pascal@19515 139 ;void puts(const char* s):
pascal@19515 140 ;***************************************************************
pascal@19515 141 global _puts:near
pascal@19515 142 proc _puts near
pascal@19515 143
pascal@19515 144 pop ax ;caller return address
pascal@19515 145 pop bx ; s
pascal@19515 146 push bx
pascal@19515 147 push ax
pascal@19515 148 global puts:near ; puts(bx)
pascal@19515 149 puts:
pascal@19515 150 call putsz
pascal@19515 151 mov bx,offset msg_crlf
pascal@19515 152
pascal@19515 153 global putsz:near ; putsz(bx)
pascal@19515 154 putsz:
pascal@19515 155 push bx
pascal@19515 156 call strlen
pascal@19515 157 pop dx
pascal@19515 158 xchg ax,cx
pascal@19515 159 mov bx,1
pascal@19515 160 mov ah,40h
pascal@19538 161 int 21h
pascal@19538 162 xor ax,ax ; ZF=1 (for malloc failure)
pascal@19538 163 ret
pascal@19515 164
pascal@19515 165 endp _puts
pascal@19515 166
pascal@19515 167
pascal@19515 168 ;***************************************************************
pascal@19538 169 ;int fileattr(const char* name);
pascal@19538 170 ;***************************************************************
pascal@19538 171 global _fileattr:near
pascal@19538 172 proc _fileattr near
pascal@19538 173
pascal@19538 174 pop ax ;caller return address
pascal@19538 175 pop dx ; name
pascal@19538 176 push dx
pascal@19538 177 push ax
pascal@19538 178 mov ax,4300h
pascal@19538 179 int 21h
pascal@19538 180 xchg ax,cx
pascal@19538 181 jmp chkc
pascal@19538 182
pascal@19538 183 endp _fileattr
pascal@19538 184
pascal@19538 185
pascal@19538 186 ;***************************************************************
pascal@19546 187 ;int open(const char* name, int flags=O_RDONLY);
pascal@19515 188 ;***************************************************************
pascal@19515 189 global _open:near
pascal@19515 190 proc _open near
pascal@19515 191
pascal@19546 192 pop ax ;caller return address
pascal@19515 193 pop bx ; name
pascal@19546 194 push bx
pascal@19515 195 push ax
pascal@19546 196 global open:near ; open(bx)
pascal@19515 197 open:
pascal@19515 198 mov dx,bx
pascal@19546 199 mov ax,3d00h
pascal@19515 200 dos:
pascal@19515 201 int 21h
pascal@19538 202 chkc:
pascal@19515 203 jnc doret
pascal@19515 204 fail:
pascal@19515 205 sbb ax,ax ; ax=-1 CF
pascal@19515 206 cwd
pascal@19515 207 doret:
pascal@19515 208 ifndef NO386
pascal@19538 209 push dx ; see next_chunk:lseek
pascal@19538 210 push ax
pascal@19538 211 pop eax
pascal@19515 212 endif
pascal@19515 213 ret
pascal@19515 214
pascal@19515 215 endp _open
pascal@19515 216
pascal@19515 217
pascal@19515 218 ;***************************************************************
pascal@19515 219 ;int close(int fd);
pascal@19515 220 ;***************************************************************
pascal@19515 221 global _close:near
pascal@19515 222 proc _close near
pascal@19515 223
pascal@19515 224 pop ax ;caller return address
pascal@19515 225 pop bx ; fd
pascal@19515 226 push bx
pascal@19515 227 push ax
pascal@19515 228 global close:near ; close(bx)
pascal@19515 229 close:
pascal@19515 230 mov ah,3Eh
pascal@19515 231 or bx,bx
pascal@19515 232 jnz dos
pascal@19515 233 ret
pascal@19515 234
pascal@19515 235 endp _close
pascal@19515 236
pascal@19515 237
pascal@19515 238 ;***************************************************************
pascal@19515 239 ;int read(int fd, void* data, int sz);
pascal@19580 240 ;int write(int fd, const void* data, int sz);
pascal@19515 241 ;***************************************************************
pascal@19515 242 global _read:near
pascal@19515 243 proc _read near
pascal@19515 244
pascal@19580 245 stc
pascal@19634 246 db 0B0h ; mov al,im
pascal@19580 247 global _write:near
pascal@19580 248 clc
pascal@19580 249 pop ax ;caller return address
pascal@19580 250 pop bx ; fd
pascal@19580 251 pop dx ; data
pascal@19515 252 pop cx ; sz
pascal@19515 253 push cx
pascal@19515 254 push dx
pascal@19580 255 push bx
pascal@19580 256 push ax
pascal@19580 257 mov ah,40h
pascal@19580 258 sbb ah,0
pascal@19515 259 jcxz fail
pascal@19515 260 jmp dos
pascal@19515 261
pascal@19515 262 endp _read
pascal@19515 263
pascal@19515 264 ;***************************************************************
pascal@19825 265 ;long lseekset(int fd, unsigned long sz);
pascal@19515 266 ;***************************************************************
pascal@19899 267
pascal@19571 268 global _lseekset:near
pascal@19571 269 proc _lseekset near
pascal@19515 270
pascal@19515 271 pop ax ;caller return address
pascal@19515 272 pop bx ; fd
pascal@19571 273 pop dx ; sz lo
pascal@19571 274 pop cx ; sz hi
pascal@19571 275 push cx
pascal@19515 276 push bx
pascal@19515 277 push ax
pascal@19571 278 global lseekset:near
pascal@19571 279 lseekset:
pascal@19571 280 clc
pascal@19634 281 db 0B0h ; mov al,im
pascal@19571 282 global rewind:near
pascal@19634 283 rewind: ; rewind(bx)
pascal@19634 284 stc
pascal@19571 285 mov ax,4200h
pascal@19571 286 jnc dos
pascal@19571 287 lseek0: ; lseek0(bx,ax=dir)
pascal@19571 288 cwd
pascal@19571 289 xor cx,cx
pascal@19515 290 jmp dos
pascal@19515 291
pascal@19571 292 endp _lseekset
pascal@19825 293
pascal@19825 294 ifdef EXTRA
pascal@19825 295 struc isostate ; struct isostate {
pascal@19825 296 fd dw ? ; 0 int fd;
pascal@19825 297 fileofs dd ? ; 2 unsigned long fileofs;
pascal@19825 298 filesize dd ? ; 6 unsigned long filesize;
pascal@19825 299 filemod dw ? ;10 unsigned short filemod;
pascal@19825 300 filename dw ? ;12 char *filename;
pascal@19825 301 dirofs dd ? ;14 unsigned long dirofs;
pascal@19825 302 dirsize dd ? ;16 unsigned long dirsize;
pascal@19825 303 curdirofs dd ? ;20 unsigned long curdirofs;
pascal@19825 304 curdirsize dd ? ;24 unsigned long curdirsize;
pascal@19825 305 curpos dd ? ;28 unsigned long curpos;
pascal@19825 306 ends ; } isostate;
pascal@19825 307 ;***************************************************************
pascal@19825 308 ;unsigned long isolseek(const unsigned long *offset);
pascal@19825 309 ;***************************************************************
pascal@19825 310 global _isolseek:near
pascal@19825 311 proc _isolseek near
pascal@19825 312
pascal@19825 313 pop ax
pascal@19825 314 pop bx
pascal@19825 315 push bx
pascal@19825 316 push ax
pascal@19825 317 mov dx,[bx]
pascal@19825 318 mov cx,[bx+2]
pascal@19825 319 extrn _isostate:isostate
pascal@19825 320 mov bx,[_isostate.fd]
pascal@19825 321 jmp lseekset ; (bx=fd, sz=cx:dx)
pascal@19825 322
pascal@19825 323 endp _isolseek
pascal@19825 324 endif
pascal@19515 325
pascal@19515 326
pascal@19515 327 ;***************************************************************
pascal@19515 328 ;int strlen(const char* s);
pascal@19515 329 ;***************************************************************
pascal@19515 330 global _strlen:near
pascal@19515 331 proc _strlen near
pascal@19515 332
pascal@19515 333 pop ax ;caller return address
pascal@19515 334 pop bx ; s
pascal@19515 335 push bx
pascal@19515 336 push ax
pascal@19515 337 global strlen:near ; strlen(bx)
pascal@19515 338 strlen:
pascal@19515 339 mov cx,bx
pascal@19515 340 jcxz @@end
pascal@19515 341 dec bx
pascal@19515 342 @@lenlp:
pascal@19515 343 inc bx
pascal@19515 344 cmp [byte bx],0
pascal@19515 345 jne @@lenlp
pascal@19515 346 sub bx,cx
pascal@19515 347 @@end:
pascal@19515 348 xchg ax,bx
pascal@19515 349 ret
pascal@19515 350
pascal@19515 351 endp _strlen
pascal@19515 352
pascal@19515 353
pascal@19515 354 ;***************************************************************
pascal@19515 355 ;int strhead(const char* a,const char* b);
pascal@19515 356 ;***************************************************************
pascal@19515 357 global _strhead:near
pascal@19515 358 proc _strhead near
pascal@19515 359
pascal@19515 360 pop cx ;caller return address
pascal@19634 361 pop bx ; a
pascal@19634 362 pop ax ; b
pascal@19634 363 push ax
pascal@19515 364 push bx
pascal@19515 365 push cx
pascal@19515 366 @@loop:
pascal@19634 367 xchg ax,bx
pascal@19515 368 mov cl,[bx] ; cl = *b++
pascal@19515 369 inc bx
pascal@19515 370 or cl,cl ; clear C
pascal@19515 371 jz fail ; return 0
pascal@19515 372 xchg ax,bx
pascal@19515 373 xor cl,[bx] ; cl -= *a++
pascal@19634 374 inc bx
pascal@19515 375 and cl,0dfh ; case insensitive
pascal@19634 376 jz @@loop
pascal@19634 377 ret ; return b (is not 0)
pascal@19515 378
pascal@19515 379 endp _strhead
pascal@19515 380
pascal@19515 381
pascal@19515 382 ;***************************************************************
pascal@19515 383 ;char* malloc_or_die(unsigned size);
pascal@19515 384 ;***************************************************************
pascal@19515 385 global _malloc_or_die:near
pascal@19515 386 proc _malloc_or_die near
pascal@19515 387
pascal@19515 388 pop ax ;caller return address
pascal@19515 389 pop cx ; size
pascal@19515 390 push cx
pascal@19515 391 push ax
pascal@19515 392 global malloc_or_die:near ; malloc_or_die(cx)
pascal@19515 393 malloc_or_die:
pascal@19515 394 call malloc
pascal@19538 395 jz _exit
pascal@19515 396 ret
pascal@19515 397
pascal@19515 398 endp _malloc_or_die
pascal@19515 399
pascal@19515 400
pascal@19515 401 ;***************************************************************
pascal@19515 402 ;int die(const char* msg);
pascal@19538 403 ;int exit();
pascal@19515 404 ;int abort();
pascal@19515 405 ;***************************************************************
pascal@19515 406 global _die:near
pascal@19515 407 proc _die near
pascal@19515 408
pascal@19515 409 pop ax ;caller return address
pascal@19515 410 pop bx ; s
pascal@19515 411 push bx
pascal@19515 412 push ax
pascal@19515 413 global die:near ; die(bx)
pascal@19515 414 die:
pascal@19515 415 call puts
pascal@19538 416 global _exit:near
pascal@19538 417 _exit:
pascal@19515 418 mov al,[_no_exit]
pascal@19515 419 cmp al,0
pascal@19515 420 jne @@hang
pascal@19515 421 extrn exit:near
pascal@19515 422 inc ax
pascal@19515 423 jmp near exit
pascal@19515 424 @@hang:
pascal@19515 425 mov bx, offset msg_hang
pascal@19515 426 call puts
pascal@19515 427 global _abort:near
pascal@19515 428 _abort:
pascal@19515 429 cli
pascal@19515 430 @@stop:
pascal@19515 431 hlt
pascal@19515 432 jmp @@stop
pascal@19515 433
pascal@19515 434 endp _die
pascal@19515 435
pascal@19546 436 struc image_himem ;struct image_himem {
pascal@19546 437 fd dw ? ; 0 int fd;
pascal@19546 438 fallback dd ? ; 2 u32 fallback;
pascal@19546 439 size dd ? ; 6 u32 size;
pascal@19546 440 remaining dd ? ;10 u32 remaining;
pascal@19546 441 buf dd ? ;14 u32 buf;
pascal@19546 442 bufv dw ? ;18 u32 *bufv;
pascal@19546 443 errmsg dw ? ;20 char *errmsg;
pascal@19546 444 chunk_size dd ? ;22 u32 chunk_size;
pascal@19546 445 next_chunk dw ? ;26 void (*next_chunk)(struct image_himem *);
pascal@19546 446 state dw ? ;28 u16 state;
pascal@19546 447 fd2close dw ? ;30 u16 fd2close;
pascal@19546 448 ends ;};
pascal@19515 449
pascal@19636 450 ;***************************************************************
pascal@19636 451 ;void next_chunk(struct image_himem *di);
pascal@19636 452 ;***************************************************************
pascal@19636 453 proc next_chunk near
pascal@19636 454
pascal@19636 455 push si
pascal@19636 456 mov bx,[(image_himem di).fd]
pascal@19636 457 call close
pascal@19636 458 ifndef NO386
pascal@19636 459 xor eax,eax
pascal@19636 460 else
pascal@19636 461 xor ax,ax
pascal@19636 462 endif
pascal@19636 463 cwd
pascal@19636 464 mov [(image_himem di).fd],ax
pascal@19636 465 mov bx,[(image_himem di).state]
pascal@19636 466 cmp al,[bx] ; ""
pascal@19636 467 jz @@end
pascal@19636 468 mov si,bx
pascal@19636 469 @@scan:
pascal@19636 470 lodsb
pascal@19636 471 mov cx,si
pascal@19636 472 cmp al,','
pascal@19636 473 jz @@eos
pascal@19636 474 cmp al,0
pascal@19636 475 jnz @@scan
pascal@19636 476 dec cx
pascal@19636 477 @@eos:
pascal@19636 478 mov [(image_himem di).state],cx
pascal@19636 479 dec si
pascal@19636 480 push [word si]
pascal@19636 481 mov [byte si],dl ; set temp eos
pascal@19636 482 call open
pascal@19636 483 pop [word si] ; restore string
pascal@19636 484 jc @@die
pascal@19636 485 mov [(image_himem di).fd],ax
pascal@19636 486 mov [(image_himem di).fd2close],ax
pascal@19636 487 xchg ax,bx
pascal@19636 488 mov ax,4202h ; SEEK_END
pascal@19636 489 call lseek0
pascal@19636 490 @@die:
pascal@19636 491 mov bx,[(image_himem di).errmsg]
pascal@19636 492 jc die
pascal@19636 493 mov bx,[(image_himem di).fd]
pascal@19636 494 ifndef NO386
pascal@19636 495 push eax
pascal@19636 496 call rewind
pascal@19636 497 pop eax
pascal@19636 498 @@end:
pascal@19636 499 mov [(image_himem di).chunk_size],eax
pascal@19636 500 else
pascal@19636 501 push ax
pascal@19636 502 push dx
pascal@19636 503 call rewind
pascal@19636 504 pop dx
pascal@19636 505 pop ax
pascal@19636 506 @@end:
pascal@19636 507 mov [word (image_himem di).chunk_size],ax
pascal@19636 508 mov [word ((image_himem di).chunk_size)+2],dx
pascal@19636 509 endif
pascal@19636 510 pop si
pascal@19636 511 ret
pascal@19636 512
pascal@19636 513 endp next_chunk
pascal@19636 514
pascal@19636 515
pascal@19571 516 ifdef LARGE_IMAGES
pascal@19571 517 struc data_himem ;struct data_himem {
pascal@19571 518 first dd ? ; 0 u32 first;
pascal@19571 519 cacheidx dw ? ; 4 int cacheidx;
pascal@19571 520 pageidx dw ? ; 6 int pageidx;
pascal@19571 521 cache dd 1024 dup(?) ; 8 int cache;
pascal@19571 522 page dd 1024 dup(?) ;4104 int page;
pascal@19571 523 ends ;}; // size=8200
pascal@19571 524 endif
pascal@19571 525
pascal@19515 526 ;***************************************************************
pascal@19538 527 ;u32* malloc_bufv_or_die(struct image_himem *m);
pascal@19538 528 ;***************************************************************
pascal@19538 529 global _malloc_bufv_or_die:near
pascal@19538 530 proc _malloc_bufv_or_die near
pascal@19538 531
pascal@19636 532 p386
pascal@19538 533 pop bx ;caller return address
pascal@19538 534 pop ax
pascal@19538 535 push ax
pascal@19538 536 push bx
pascal@19538 537 push si
pascal@19538 538 xchg ax,si
pascal@19571 539 ifdef LARGE_IMAGES
pascal@19571 540 mov cx,[word ((image_himem si).size) + 2]
pascal@19571 541 shr cx,4 ; pages index size = size >> 20
pascal@19571 542 add cx,8+4096+8
pascal@19571 543 call malloc_or_die
pascal@19571 544 mov ecx,4096+4095 ; cnt = 1+(m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19571 545 add ecx,[(image_himem si).size]
pascal@19571 546 shr ecx,12
pascal@19571 547 mov [curdata],ax
pascal@19571 548 else
pascal@19546 549 mov ecx,[(image_himem si).size]
pascal@19538 550 dec ecx
pascal@19538 551 shr ecx,12
pascal@19538 552 inc cx ; cnt = (m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19538 553 push cx
pascal@19538 554 inc cx ; cnt+1
pascal@19538 555 shl cx,2 ; bufv => vcpi => vm86
pascal@19538 556 ; our malloc zeroes allocated mem: bufv[cnt]=0;
pascal@19538 557 ; Allocate pages, storing addrs in addrbuf
pascal@19538 558 call malloc_or_die
pascal@19571 559 pop cx
pascal@19571 560 push ax
pascal@19571 561 endif
pascal@19546 562 mov [(image_himem si).bufv],ax
pascal@19571 563 xchg ax,si
pascal@19538 564 @@vcpi_alloc:
pascal@19538 565 xor edx,edx
pascal@19538 566 mov ax,0DE04h
pascal@19538 567 int 67h
pascal@19538 568 or ah,ah
pascal@19538 569 mov bx,offset vcpi_alloc_err
pascal@19571 570 jnz die
pascal@19571 571 ; for (i = cnt-1; i >= 0; i--)
pascal@19571 572 ifdef LARGE_IMAGES
pascal@19571 573 mov eax,ecx
pascal@19571 574 dec eax
pascal@19571 575 else
pascal@19571 576 mov ax,cx
pascal@19571 577 dec ax
pascal@19571 578 cwde
pascal@19571 579 endif
pascal@19571 580 shl eax,12 ; i*_4k
pascal@19571 581 ; if (edx < pm.fallback+i*_4k && edx >= pm.fallback) again
pascal@19899 582 extrn _imgs
pascal@19899 583 mov bx,offset _imgs+2
pascal@19571 584 push eax
pascal@19571 585 add eax,[bx-2+2]
pascal@19571 586 cmp eax,edx ; pm.fallback+i*_4k <= edx ?
pascal@19571 587 pop eax ; i*_4k
pascal@19571 588 jbe @@pmok
pascal@19571 589 cmp edx,[bx-2+2] ; edx >= pm.fallback ?
pascal@19571 590 jae @@vcpi_alloc
pascal@19571 591 @@pmok:
pascal@19571 592 ; if (edx >= initrd.fallback+i*_4k && edx < initrd.fallback+initrd.size) again
pascal@19899 593 extrn _imgs
pascal@19899 594 mov bx,offset _imgs+32+2
pascal@19571 595 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 596 cmp eax,edx ; initrd.fallback+i*_4k > edx ?
pascal@19571 597 ja @@initrdok
pascal@19571 598 mov eax,[bx-2+6] ; initrd.size
pascal@19571 599 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 600 cmp eax,edx ; initrd.fallback+initrd.size > edx ?
pascal@19571 601 @@jnc_vcpi_alloc:
pascal@19571 602 ja @@vcpi_alloc
pascal@19571 603 @@initrdok:
pascal@19571 604 ifdef LARGE_IMAGES
pascal@19571 605 cmp [(data_himem si).first],0
pascal@19571 606 jne @@notfirst
pascal@19571 607 mov [(data_himem si).first],edx
pascal@19571 608 @@notfirst:
pascal@19571 609 mov bx,[(data_himem si).cacheidx]
pascal@19571 610 cmp bh,4
pascal@19571 611 jae @@nextpage
pascal@19571 612 shl bx,2
pascal@19571 613 inc [(data_himem si).cacheidx]
pascal@19571 614 mov [(data_himem bx+si).cache],edx
pascal@19571 615 loopd @@vcpi_alloc
pascal@19571 616 mov [(data_himem bx+si).cache],ecx ; last is 0
pascal@19571 617 @@nextpage:
pascal@19571 618 and [(data_himem si).cacheidx],0
pascal@19571 619 mov bx,[(data_himem si).pageidx]
pascal@19571 620 mov [(data_himem bx+si).page],edx
pascal@19571 621 add [(data_himem si).pageidx],4
pascal@19571 622 push cx
pascal@19571 623 lea cx,[(data_himem si).cache]
pascal@19571 624 ifdef NO386
pascal@19571 625 push edx
pascal@19571 626 pop dx
pascal@19571 627 pop ax
pascal@19571 628 endif
pascal@19571 629 call storepage ; storepage(edx,cx)
pascal@19571 630 pop cx
pascal@19571 631 or ecx,ecx ; clear C
pascal@19571 632 jnz @@jnc_vcpi_alloc
pascal@19571 633 mov [dword (data_himem si).cacheidx],ecx
pascal@19571 634 xchg ax,si
pascal@19571 635 else
pascal@19571 636 mov [si],edx
pascal@19571 637 lodsd ; si=+4
pascal@19538 638 loop @@vcpi_alloc
pascal@19538 639 pop ax
pascal@19571 640 endif
pascal@19538 641 pop si
pascal@19538 642 ret
pascal@19636 643 ifdef NO386
pascal@19636 644 p8086
pascal@19636 645 endif
pascal@19538 646
pascal@19538 647 endp _malloc_bufv_or_die
pascal@19538 648
pascal@19538 649
pascal@19538 650 ;***************************************************************
pascal@19571 651 ; void memcpy_image(struct image_himem *m);
pascal@19515 652 ;***************************************************************
pascal@19571 653 global _memcpy_image:near
pascal@19571 654 proc _memcpy_image near
pascal@19515 655
pascal@19571 656 pop ax ;caller return address
pascal@19515 657 pop bx
pascal@19571 658 push bx
pascal@19571 659 push ax
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@19571 667 memcpy_imagez:
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@19571 696 memcpy_imagez:
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@19571 708 extrn _memcpy32:near
pascal@19571 709 call near _memcpy32
pascal@19571 710 add sp,14
pascal@19571 711 @@skip:
pascal@19571 712 ret
pascal@19571 713
pascal@19571 714 endp _memcpy_image
pascal@19571 715
pascal@19571 716 ;***************************************************************
pascal@19571 717 ;void storepage(u32 *dst, u16 src);
pascal@19571 718 ;***************************************************************
pascal@19571 719 global _storepage:near
pascal@19571 720 proc _storepage near
pascal@19571 721
pascal@19571 722 pop ax ;caller return address
pascal@19571 723 pop bx
pascal@19571 724 pop cx
pascal@19571 725 push cx
pascal@19571 726 push bx
pascal@19571 727 push ax
pascal@19571 728 ifndef NO386
pascal@19571 729 mov edx,[bx]
pascal@19571 730 else
pascal@19571 731 mov ax,[bx]
pascal@19571 732 mov dx,[bx+2]
pascal@19571 733 endif
pascal@19571 734 storepage:
pascal@19571 735 ifndef NO386
pascal@19571 736 push 0
pascal@19571 737 push 4096
pascal@19571 738 push 0
pascal@19571 739 else
pascal@19571 740 xor bx,bx
pascal@19571 741 push bx
pascal@19571 742 mov bh,4096/256
pascal@19571 743 push bx
pascal@19571 744 xor bx,bx
pascal@19571 745 push bx
pascal@19571 746 endif
pascal@19571 747 push cx
pascal@19571 748 push ds
pascal@19571 749 jmp call_memcpy32
pascal@19571 750
pascal@19571 751 endp _storepage
pascal@19571 752
pascal@19571 753
pascal@19571 754 ifdef LARGE_IMAGES
pascal@19636 755 p386
pascal@19571 756 ;***************************************************************
pascal@19571 757 ;void reset_bufv(u32 *p);
pascal@19571 758 ;***************************************************************
pascal@19571 759 global _reset_bufv:near
pascal@19571 760 proc _reset_bufv near
pascal@19571 761
pascal@19634 762 pop ax ;caller return address
pascal@19634 763 pop bx
pascal@19634 764 push bx
pascal@19515 765 push ax
pascal@19634 766 mov [curdata],bx
pascal@19571 767 and [dword (data_himem bx).cacheidx],0
pascal@19571 768 ret
pascal@19571 769
pascal@19571 770 endp _reset_bufv
pascal@19571 771
pascal@19571 772 ;***************************************************************
pascal@19571 773 ;u32* prev_bufv();
pascal@19571 774 ;u32* prev_bufv();
pascal@19571 775 ;***************************************************************
pascal@19571 776 global _prev_bufv:near
pascal@19571 777 global _next_bufv:near
pascal@19571 778 proc _prev_bufv near
pascal@19571 779
pascal@19571 780 stc
pascal@19571 781 db 73h ; jnc
pascal@19571 782 _next_bufv:
pascal@19571 783 clc
pascal@19571 784 sbb ax,ax
pascal@19571 785 stc
pascal@19571 786 rcl ax,1 ; -1/+1
pascal@19571 787 xor ecx,ecx
pascal@19571 788 push si
pascal@19571 789 mov si,[curdata]
pascal@19571 790 add ax,[(data_himem si).cacheidx]
pascal@19571 791 test ax,0fc00h
pascal@19571 792 jz @@gotpage
pascal@19571 793 push ax ; FFFF / 0400
pascal@19571 794 sar ax,8 ; FFFC / 0004
pascal@19571 795 and al,0fch
pascal@19571 796 add [(data_himem si).pageidx],ax
pascal@19571 797 mov bx,[(data_himem si).pageidx]
pascal@19571 798 lea bx,[(data_himem bx+si).page]
pascal@19571 799 mov edx,ds
pascal@19571 800 shl edx,4
pascal@19571 801 lea cx,[(data_himem si).cache]
pascal@19571 802 add edx,ecx
pascal@19571 803 mov eax,[bx]
pascal@19571 804 or eax,eax
pascal@19571 805 jnz @@pageok
pascal@19571 806 pop ax
pascal@19571 807 xchg ax,bx
pascal@19571 808 pop si
pascal@19571 809 ret
pascal@19571 810 @@pageok:
pascal@19571 811 mov cx,4096
pascal@19571 812 call memcpy_imagez ; get page
pascal@19571 813 pop ax ; FFFF / 0400
pascal@19571 814 cbw
pascal@19571 815 shr ax,6 ; 03FF / 0000
pascal@19571 816 @@gotpage:
pascal@19571 817 mov [(data_himem si).cacheidx],ax
pascal@19571 818 shl ax,2
pascal@19571 819 xchg ax,bx
pascal@19571 820 lea ax,[(data_himem bx+si).cache]
pascal@19571 821 or bx,[(data_himem si).pageidx] ; !pageidx && !cacheidx
pascal@19571 822 jnz @@notfirst2
pascal@19571 823 xchg ax,si ; &first
pascal@19571 824 @@notfirst2:
pascal@19571 825 pop si
pascal@19571 826 ret
pascal@19636 827 ifdef NO386
pascal@19636 828 p8086
pascal@19636 829 endif
pascal@19571 830
pascal@19571 831 endp _prev_bufv
pascal@19571 832 endif
pascal@19571 833
pascal@19571 834
pascal@19571 835 ;***************************************************************
pascal@19515 836 ;void open_image(const char *name, struct image_himem *m);
pascal@19515 837 ;***************************************************************
pascal@19515 838 global _open_image:near
pascal@19515 839 proc _open_image near
pascal@19515 840
pascal@19515 841 arg fname :word, \
pascal@19515 842 m :word = PARAM_SIZE
pascal@19515 843
pascal@19515 844 push bp
pascal@19515 845 mov bp,sp
pascal@19515 846 push si di
pascal@19515 847 ifndef NO386
pascal@19515 848 xor eax,eax ; 1st loop flag + eos
pascal@19515 849 else
pascal@19515 850 xor ax,ax ; 1st loop flag + eos
pascal@19515 851 endif
pascal@19515 852 mov di,[m]
pascal@19546 853 cmp [(image_himem di).fd],ax
pascal@19515 854 jnz @@alreadydone
pascal@19515 855 ifndef NO386
pascal@19546 856 mov [(image_himem di).size],eax ; m->size = 0L
pascal@19515 857 else
pascal@19546 858 mov [word (image_himem di).size],ax ; m->size = 0L
pascal@19546 859 mov [word ((image_himem di).size)+2],ax
pascal@19515 860 endif
pascal@19571 861 mov [(image_himem di).next_chunk],offset next_chunk
pascal@19515 862 mov si,[fname]
pascal@19546 863 mov [(image_himem di).state],si
pascal@19515 864 @@next:
pascal@19515 865 push di
pascal@19546 866 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@19515 867 pop di
pascal@19515 868 ifndef NO386
pascal@19515 869 add eax,3
pascal@19515 870 and al,0FCh
pascal@19546 871 add [(image_himem di).size],eax ; m->size += m->chunk_size
pascal@19515 872 or eax,eax
pascal@19515 873 jnz @@next
pascal@19515 874 else
pascal@19515 875 mov cx,ax
pascal@19515 876 or cx,dx
pascal@19515 877 add ax,3
pascal@19515 878 adc dx,0
pascal@19515 879 and al,0FCh
pascal@19546 880 add [word (image_himem di).size],ax ; m->size += m->chunk_size
pascal@19546 881 adc [word ((image_himem di).size)+2],dx
pascal@19538 882 inc cx ; jcxnz
pascal@19515 883 loop @@next
pascal@19515 884 endif
pascal@19546 885 mov [(image_himem di).state],si
pascal@19515 886 push di
pascal@19546 887 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@19515 888 pop di
pascal@19515 889 @@alreadydone:
pascal@19515 890 push ax
pascal@19515 891 image_done:
pascal@19515 892 pop ax
pascal@19515 893 pop di si bp
pascal@19515 894 ret
pascal@19515 895
pascal@19515 896 endp _open_image
pascal@19515 897
pascal@19515 898
pascal@19515 899 ;***************************************************************
pascal@19515 900 ;int read_image(struct image_himem *m, void* data, int sz);
pascal@19515 901 ;***************************************************************
pascal@19515 902 global _read_image:near
pascal@19515 903 proc _read_image near
pascal@19515 904
pascal@19515 905 arg m :word, \
pascal@19515 906 data :word, \
pascal@19515 907 sz :word = PARAM_SIZE
pascal@19515 908
pascal@19515 909 push bp
pascal@19515 910 mov bp,sp
pascal@19515 911 push si di
pascal@19515 912 ifndef NO386
pascal@19515 913 push 0 ; return value
pascal@19515 914 else
pascal@19515 915 xor ax,ax
pascal@19515 916 push ax
pascal@19515 917 endif
pascal@19515 918 mov di,[m]
pascal@19515 919 @@loop:
pascal@19538 920 ifndef NO386
pascal@19538 921 xor ecx,ecx
pascal@19538 922 mov cx,[word sz]
pascal@19538 923 @@chksz:
pascal@19546 924 mov eax,[(image_himem di).chunk_size]
pascal@19538 925 cmp ecx,eax
pascal@19538 926 jb @@szok
pascal@19538 927 xchg eax,ecx
pascal@19538 928 else
pascal@19538 929 mov cx,[word sz]
pascal@19538 930 @@chksz:
pascal@19546 931 mov ax,[word (image_himem di).chunk_size]
pascal@19538 932 cmp cx,ax
pascal@19515 933 jb @@szok
pascal@19546 934 cmp [word ((image_himem di).chunk_size)+2],0 ; hi m->chunk_size
pascal@19515 935 jne @@szok
pascal@19515 936 xchg ax,cx
pascal@19538 937 endif
pascal@19515 938 @@szok:
pascal@19538 939 jcxz image_done
pascal@19538 940 push cx
pascal@19515 941 push [word data]
pascal@19515 942 push [word di]
pascal@19515 943 call _read
pascal@19538 944 pop dx
pascal@19515 945 pop bx
pascal@19538 946 pop dx
pascal@19538 947 jc image_done
pascal@19515 948 add bx,ax
pascal@19515 949 xor cx,cx
pascal@19538 950 ifndef NO386
pascal@19538 951 cwde ; ax < 8000h
pascal@19546 952 sub [(image_himem di).chunk_size],eax
pascal@19538 953 else
pascal@19538 954 cwd ; ax < 8000h
pascal@19546 955 sub [word (image_himem di).chunk_size],ax
pascal@19546 956 sbb [word ((image_himem di).chunk_size)+2],dx
pascal@19538 957 jnz @@fill
pascal@19546 958 cmp [word (image_himem di).chunk_size],dx
pascal@19538 959 endif
pascal@19538 960 jnz @@fill
pascal@19538 961 dec cx
pascal@19515 962 @@fill:
pascal@19515 963 test al,3
pascal@19515 964 je @@filled
pascal@19538 965 mov [bx],dl
pascal@19515 966 inc bx
pascal@19515 967 inc ax
pascal@19515 968 jmp @@fill
pascal@19515 969 @@filled:
pascal@19538 970 ifndef NO386
pascal@19546 971 sub [(image_himem di).remaining],eax
pascal@19538 972 else
pascal@19546 973 sub [word (image_himem di).remaining],ax
pascal@19546 974 sbb [word ((image_himem di).remaining)+2],dx
pascal@19538 975 endif
pascal@19515 976 add [bp-4-2],ax
pascal@19515 977 add [word data],ax
pascal@19515 978 sub [word sz],ax
pascal@19538 979 pushf
pascal@19546 980 and cx,[(image_himem di).next_chunk]
pascal@19538 981 jz @@same_chunk
pascal@19515 982 push di
pascal@19515 983 call cx ; m->next_chunk()
pascal@19515 984 pop di
pascal@19538 985 @@same_chunk:
pascal@19538 986 popf
pascal@19538 987 jnz @@loop
pascal@19538 988 jmp image_done
pascal@19515 989
pascal@19515 990 endp _read_image
pascal@19515 991
pascal@19515 992
pascal@19515 993 ;***************************************************************
pascal@19515 994 ;unsigned long strtol(const char *s);
pascal@19515 995 ;***************************************************************
pascal@19515 996 global _strtol:near
pascal@19515 997 proc _strtol near
pascal@19515 998
pascal@19515 999 ifndef NO386
pascal@19515 1000 pop ax ;caller return address
pascal@19515 1001 pop cx ; s
pascal@19515 1002 push cx
pascal@19515 1003 push ax
pascal@19515 1004 xor ebx,ebx
pascal@19515 1005 push si
pascal@19634 1006 jcxz @@end
pascal@19515 1007 mov si,cx
pascal@19515 1008 xor ecx,ecx
pascal@19515 1009 xor eax,eax
pascal@19515 1010 lodsb
pascal@19634 1011 mov dx,ax
pascal@19634 1012 or al,20h
pascal@19634 1013 cmp al,'n' ; vga=normal
pascal@19538 1014 je @@vga
pascal@19538 1015 dec cx
pascal@19634 1016 cmp al,'e' ; vga=extended
pascal@19538 1017 je @@vga
pascal@19538 1018 dec cx
pascal@19634 1019 cmp al,'a' ; vga=ask
pascal@19538 1020 jne @@notvga
pascal@19538 1021 @@vga:
pascal@19538 1022 dec cx
pascal@19538 1023 xchg ax,cx
pascal@19538 1024 cwd
pascal@19634 1025 jmp @@popsiret
pascal@19538 1026 @@notvga:
pascal@19538 1027 mov cx,10 ; radix
pascal@19634 1028 xchg ax,dx
pascal@19515 1029 cmp al,'+'
pascal@19515 1030 je @@radixskip
pascal@19515 1031 cmp al,'-'
pascal@19515 1032 clc
pascal@19515 1033 jne @@radixkeep
pascal@19515 1034 stc
pascal@19515 1035 @@radixskip:
pascal@19515 1036 lodsb
pascal@19515 1037 @@radixkeep:
pascal@19515 1038 pushf
pascal@19515 1039 cmp al,'0'
pascal@19515 1040 jne @@radixok
pascal@19515 1041 mov cl,8
pascal@19515 1042 lodsb
pascal@19634 1043 or al,20h
pascal@19634 1044 cmp al,'x'
pascal@19515 1045 jne @@radixok
pascal@19515 1046 mov cl,16
pascal@19515 1047 @@strtollp:
pascal@19515 1048 lodsb
pascal@19515 1049 @@radixok:
pascal@19634 1050 or al,20h
pascal@19515 1051 sub al,'0'
pascal@19515 1052 jb @@endstrtol
pascal@19515 1053 cmp al,9
pascal@19515 1054 jbe @@digitok
pascal@19515 1055 cmp al,'a'-'0'
pascal@19515 1056 jb @@endstrtol
pascal@19515 1057 sub al,'a'-'0'-10
pascal@19515 1058 @@digitok:
pascal@19515 1059 cmp al,cl
pascal@19515 1060 jae @@endstrtol
pascal@19515 1061 xchg eax,ebx
pascal@19515 1062 mul ecx
pascal@19515 1063 add eax,ebx
pascal@19515 1064 xchg eax,ebx
pascal@19515 1065 jmp @@strtollp
pascal@19515 1066 @@endstrtol:
pascal@19515 1067 mov cl,10
pascal@19515 1068 cmp al,'k'-'a'+10
pascal@19515 1069 je @@shift
pascal@19515 1070 mov cl,20
pascal@19515 1071 cmp al,'m'-'a'+10
pascal@19515 1072 je @@shift
pascal@19515 1073 mov cl,30
pascal@19515 1074 cmp al,'g'-'a'+10
pascal@19515 1075 jne @@noshift
pascal@19515 1076 @@shift:
pascal@19515 1077 shl ebx,cl
pascal@19515 1078 @@noshift:
pascal@19515 1079 popf
pascal@19515 1080 jnc @@end
pascal@19515 1081 neg ebx
pascal@19515 1082 @@end:
pascal@19515 1083 push ebx
pascal@19515 1084 pop ax
pascal@19515 1085 pop dx
pascal@19634 1086 @@popsiret:
pascal@19515 1087 pop si
pascal@19515 1088 else
pascal@19515 1089 pop ax ;caller return address
pascal@19515 1090 pop cx ; s
pascal@19515 1091 push cx
pascal@19515 1092 push ax
pascal@19515 1093 push si
pascal@19515 1094 push di
pascal@19515 1095 xor ax,ax
pascal@19515 1096 cwd
pascal@19634 1097 jcxz @@goend
pascal@19515 1098 xchg ax,di
pascal@19515 1099 mov si,cx
pascal@19538 1100 lodsb
pascal@19634 1101 mov bx,ax
pascal@19634 1102 or al,20h
pascal@19538 1103 mov cx,-1
pascal@19634 1104 cmp al,'n' ; vga=normal
pascal@19538 1105 je @@vga
pascal@19538 1106 dec cx
pascal@19634 1107 cmp al,'e' ; vga=extended
pascal@19538 1108 je @@vga
pascal@19538 1109 dec cx
pascal@19634 1110 cmp al,'a' ; vga=ask
pascal@19538 1111 jne @@notvga
pascal@19538 1112 @@vga:
pascal@19538 1113 xchg ax,cx
pascal@19538 1114 @@goend:
pascal@19634 1115 jmp @@popdisiret
pascal@19538 1116 @@notvga:
pascal@19515 1117 mov cx,10 ; radix
pascal@19634 1118 xchg ax,bx
pascal@19515 1119 cmp al,'+'
pascal@19515 1120 je @@radixskip
pascal@19515 1121 cmp al,'-'
pascal@19515 1122 clc
pascal@19515 1123 jne @@radixkeep
pascal@19515 1124 stc
pascal@19515 1125 @@radixskip:
pascal@19515 1126 lodsb
pascal@19515 1127 @@radixkeep:
pascal@19515 1128 pushf
pascal@19515 1129 cmp al,'0'
pascal@19515 1130 jne @@radixok
pascal@19515 1131 mov cl,8
pascal@19515 1132 lodsb
pascal@19634 1133 mov al,20h
pascal@19634 1134 cmp al,'x'
pascal@19515 1135 jne @@radixok
pascal@19515 1136 mov cl,16
pascal@19515 1137 @@strtollp:
pascal@19515 1138 lodsb
pascal@19515 1139 @@radixok:
pascal@19634 1140 or al,20h
pascal@19515 1141 sub al,'0'
pascal@19515 1142 jb @@endstrtol
pascal@19515 1143 cmp al,9
pascal@19515 1144 jbe @@digitok
pascal@19515 1145 cmp al,'a'-'0'
pascal@19515 1146 jb @@endstrtol
pascal@19515 1147 sub al,'a'-'0'-10
pascal@19515 1148 @@digitok:
pascal@19515 1149 cmp al,cl
pascal@19515 1150 jae @@endstrtol
pascal@19515 1151
pascal@19515 1152 push ax
pascal@19515 1153 push si
pascal@19515 1154 push dx
pascal@19515 1155 xchg ax,di
pascal@19515 1156 mul cx
pascal@19515 1157 xchg ax,di
pascal@19515 1158 xchg ax,dx
pascal@19515 1159 xchg ax,si
pascal@19515 1160 pop ax
pascal@19515 1161 mul cx
pascal@19515 1162 add ax,si
pascal@19515 1163 pop si
pascal@19515 1164 xchg ax,dx
pascal@19515 1165 pop ax
pascal@19515 1166 mov ah,0
pascal@19515 1167 add di,ax
pascal@19515 1168 adc dx,0
pascal@19515 1169
pascal@19515 1170 jmp @@strtollp
pascal@19515 1171 @@endstrtol:
pascal@19515 1172 mov cl,10
pascal@19515 1173 cmp al,'k'-'a'+10
pascal@19515 1174 je @@shift
pascal@19515 1175 mov cl,20
pascal@19515 1176 cmp al,'m'-'a'+10
pascal@19515 1177 je @@shift
pascal@19515 1178 mov cl,30
pascal@19515 1179 cmp al,'g'-'a'+10
pascal@19515 1180 jne @@noshift
pascal@19515 1181 @@shift:
pascal@19515 1182 rcl di,1
pascal@19515 1183 shl dx,1
pascal@19515 1184 loop @@shift
pascal@19515 1185 @@noshift:
pascal@19515 1186 popf
pascal@19515 1187 jnc @@end
pascal@19515 1188 not dx
pascal@19515 1189 neg di
pascal@19515 1190 jne @@end
pascal@19515 1191 inc dx
pascal@19515 1192 @@end:
pascal@19515 1193 xchg ax,di
pascal@19634 1194 @@popdisiret:
pascal@19515 1195 pop di
pascal@19515 1196 pop si
pascal@19515 1197 endif
pascal@19515 1198 ret
pascal@19515 1199
pascal@19515 1200 endp _strtol
pascal@19515 1201
pascal@19515 1202
pascal@19515 1203 ifdef NO386
pascal@19515 1204 ;***************************************************************
pascal@19515 1205 ;u16 topseg();
pascal@19515 1206 ;***************************************************************
pascal@19515 1207 global _topseg:near
pascal@19515 1208 proc _topseg near
pascal@19515 1209
pascal@19515 1210 int 12h
pascal@19515 1211 jnc @@max640k
pascal@19515 1212 mov ax,640 ; 9000
pascal@19515 1213 @@max640k:
pascal@19634 1214 dec ax
pascal@19515 1215 and al,0C0h
pascal@19515 1216 mov cl,6
pascal@19515 1217 shl ax,cl
pascal@19515 1218 ret
pascal@19515 1219
pascal@19515 1220 endp _topseg
pascal@19515 1221 endif
pascal@19515 1222
pascal@19825 1223 ifdef EXTRA
pascal@19825 1224 p8086
pascal@19825 1225
pascal@19825 1226 ;***************************************************************
pascal@19825 1227 ;int strcmp(const char* a,const char* b);
pascal@19825 1228 ;***************************************************************
pascal@19825 1229 global _strcmp:near
pascal@19825 1230 proc _strcmp near
pascal@19825 1231
pascal@19825 1232 pop cx ;caller return address
pascal@19825 1233 pop bx ; a
pascal@19825 1234 pop ax ; b
pascal@19825 1235 push ax
pascal@19825 1236 push bx
pascal@19825 1237 push cx
pascal@19825 1238 push si
pascal@19825 1239 xchg ax,si
pascal@19825 1240 sub bx,si
pascal@19825 1241 @@lp:
pascal@19825 1242 mov al,[si]
pascal@19825 1243 sub al,[bx+si]
pascal@19825 1244 jnz @@out
pascal@19825 1245 lodsb
pascal@19825 1246 cmp al,0
pascal@19825 1247 jne @@lp
pascal@19825 1248 @@out:
pascal@19825 1249 cbw
pascal@19825 1250 pop si
pascal@19825 1251 ret
pascal@19825 1252
pascal@19825 1253 endp _strcmp
pascal@19825 1254
pascal@19825 1255
pascal@19825 1256 ;***************************************************************
pascal@19825 1257 ;char strstr(const char* a,const char* b);
pascal@19825 1258 ;***************************************************************
pascal@19825 1259 global _strstr:near
pascal@19825 1260 proc _strstr near
pascal@19825 1261
pascal@19825 1262 pop ax ;caller return address
pascal@19825 1263 pop cx ; a
pascal@19825 1264 pop dx ; b
pascal@19825 1265 push dx
pascal@19825 1266 push cx
pascal@19825 1267 push ax
pascal@19825 1268 push si
pascal@19825 1269 @@loop:
pascal@19825 1270 xor ax,ax
pascal@19825 1271 mov si,cx
pascal@19825 1272 cmp [si],al ; *a
pascal@19825 1273 jz @@end ; return ax = NULL
pascal@19825 1274 mov bx,dx
pascal@19825 1275 sub bx,si
pascal@19825 1276 @@match:
pascal@19825 1277 or ah,[bx+si] ; *b
pascal@19825 1278 jz @@found
pascal@19825 1279 lodsb
pascal@19825 1280 sub ah,al
pascal@19825 1281 jz @@match
pascal@19825 1282 inc cx
pascal@19825 1283 jmp @@loop
pascal@19825 1284 @@found:
pascal@19825 1285 xchg ax,cx
pascal@19825 1286 @@end:
pascal@19825 1287 pop si
pascal@19825 1288 ret
pascal@19825 1289
pascal@19825 1290 endp _strstr
pascal@19825 1291
pascal@19825 1292
pascal@19825 1293 ;***************************************************************
pascal@19825 1294 ;char *progname(void)
pascal@19825 1295 ;***************************************************************
pascal@19825 1296 global _progname:near
pascal@19825 1297 proc _progname near
pascal@19825 1298
pascal@19825 1299 push si di es
pascal@19825 1300 mov ah,30h
pascal@19825 1301 int 21h
pascal@19875 1302 xor di,di
pascal@19825 1303 cmp al,3
pascal@19874 1304 mov ax,di
pascal@19825 1305 jb @@skip
pascal@19873 1306 ;mov es,[cs:2Ch]
pascal@19874 1307 mov es,[di+2Ch]
pascal@19825 1308 mov cx,-1
pascal@19870 1309 @@loop:
pascal@19825 1310 repne
pascal@19825 1311 scasb
pascal@19825 1312 scasb
pascal@19870 1313 jne @@loop
pascal@19870 1314 inc di
pascal@19870 1315 inc di
pascal@19870 1316 mov si,di ; progname @es:di
pascal@19870 1317 repne
pascal@19870 1318 scasb
pascal@19870 1319 mov cx,di
pascal@19874 1320 sub cx,si ; progname len
pascal@19870 1321 call malloc_or_die ; keep cx
pascal@19870 1322 mov di,ax
pascal@19825 1323 push ds
pascal@19825 1324 push es
pascal@19825 1325 pop ds
pascal@19825 1326 pop es
pascal@19870 1327 rep
pascal@19870 1328 movsb
pascal@19870 1329 push es
pascal@19825 1330 pop ds
pascal@19825 1331 @@skip:
pascal@19825 1332 pop es di si
pascal@19825 1333 ret
pascal@19825 1334
pascal@19825 1335 endp _progname
pascal@19825 1336
pascal@19825 1337
pascal@19825 1338 ;***************************************************************
pascal@19875 1339 ;void chdirname(char *path)
pascal@19825 1340 ;***************************************************************
pascal@19825 1341 global _chdirname:near
pascal@19825 1342 proc _chdirname near
pascal@19825 1343
pascal@19825 1344 pop ax
pascal@19825 1345 pop bx
pascal@19825 1346 push bx
pascal@19825 1347 push ax
pascal@19825 1348
pascal@19825 1349 cmp [byte bx+1],3Ah
pascal@19825 1350 jne @@nodisk
pascal@19875 1351 mov dl,20h
pascal@19875 1352 or dl,[bx]
pascal@19825 1353 sub dl,61h
pascal@19825 1354 mov ah,0Eh
pascal@19825 1355 int 21h
pascal@19825 1356 inc bx
pascal@19825 1357 inc bx
pascal@19825 1358 @@nodisk:
pascal@19825 1359 xor cx,cx
pascal@19825 1360 @@next:
pascal@19825 1361 mov al,[bx]
pascal@19825 1362 cmp al,5Ch
pascal@19825 1363 jne @@tsteos
pascal@19875 1364 mov dx,bx
pascal@19875 1365 inc cx
pascal@19825 1366 @@tsteos:
pascal@19825 1367 inc bx
pascal@19825 1368 or al,al
pascal@19825 1369 jnz @@next
pascal@19825 1370 jcxz @@end
pascal@19875 1371 mov bx,dx
pascal@19825 1372 push [word bx]
pascal@19825 1373 mov [bx],al
pascal@19875 1374 stc
pascal@19875 1375 mov ax,713Bh ; chdir long filename
pascal@19875 1376 int 21h
pascal@19875 1377 mov ah,3Bh ; chdir
pascal@19875 1378 jnc chdirdone
pascal@19875 1379 int 21h
pascal@19875 1380 chdirdone:
pascal@19825 1381 pop [word bx]
pascal@19825 1382 @@end:
pascal@19825 1383 ret
pascal@19825 1384
pascal@19825 1385 endp _chdirname
pascal@19825 1386
pascal@19825 1387
pascal@19825 1388 ;***************************************************************
pascal@19825 1389 ;char *ultoa(unsigned long n);
pascal@19825 1390 ;***************************************************************
pascal@19825 1391 global _ultoa:near
pascal@19825 1392 proc _ultoa near
pascal@19825 1393
pascal@19825 1394 pop ax
pascal@19825 1395 pop cx
pascal@19825 1396 pop dx
pascal@19825 1397 push dx
pascal@19825 1398 push cx
pascal@19825 1399 push ax ; DX:CX = n
pascal@19825 1400 push si
pascal@19825 1401 mov si,10
pascal@19825 1402 mov bx,offset ultoabuf+11
pascal@19825 1403 @@loop:
pascal@19825 1404 dec bx
pascal@19825 1405 xchg ax,dx
pascal@19825 1406 xor dx,dx
pascal@19825 1407 div si ; DX:AX = 0000:hi(n)
pascal@19825 1408 xchg ax,cx ; CX = hi(n)/10
pascal@19825 1409 div si ; DX:AX = hi(n)%10:lo(n)
pascal@19825 1410 xchg ax,cx ; CX = lo(n/10)
pascal@19825 1411 xchg ax,dx ; DX = hi(n)/10 = hi(n/10)
pascal@19825 1412 add al,'0'
pascal@19825 1413 mov [bx],al
pascal@19825 1414 mov ax,cx
pascal@19825 1415 or ax,dx
pascal@19825 1416 jnz @@loop
pascal@19825 1417 xchg ax,bx
pascal@19825 1418 pop si
pascal@19825 1419 ret
pascal@19825 1420
pascal@19825 1421 endp _ultoa
pascal@19825 1422
pascal@19825 1423
pascal@19825 1424 ;***************************************************************
pascal@19825 1425 ;unsigned long kver2ul(char *kernel_version);
pascal@19825 1426 ;***************************************************************
pascal@19825 1427 global _kver2ul:near
pascal@19825 1428 proc _kver2ul near
pascal@19825 1429
pascal@19825 1430 pop bx
pascal@19825 1431 pop ax
pascal@19825 1432 push ax
pascal@19825 1433 push bx
pascal@19825 1434 push bp si di
pascal@19825 1435 xchg ax,si
pascal@19825 1436 xor di,di
pascal@19825 1437 push di
pascal@19825 1438 push di
pascal@19825 1439 mov bp,sp
pascal@19825 1440 inc di
pascal@19825 1441 inc di
pascal@19825 1442 mov cl,4
pascal@19825 1443 @@number:
pascal@19825 1444 xor ax,ax
pascal@19825 1445 @@digit:
pascal@19825 1446 shl al,cl
pascal@19825 1447 shl ax,cl
pascal@19825 1448 lodsb
pascal@19825 1449 sub al,30h
pascal@19825 1450 cmp al,9
pascal@19825 1451 jbe @@digit
pascal@19825 1452 mov [bp+di],ah
pascal@19825 1453 dec di
pascal@19825 1454 jns @@number
pascal@19825 1455 pop ax
pascal@19825 1456 pop dx
pascal@19825 1457 pop di si bp
pascal@19825 1458 kver2ulret:
pascal@19825 1459 ret
pascal@19825 1460
pascal@19825 1461 endp _kver2ul
pascal@19825 1462
pascal@19825 1463
pascal@19825 1464 ;***************************************************************
pascal@19825 1465 ;void try_default_args();
pascal@19825 1466 ;***************************************************************
pascal@19825 1467 global _try_default_args:near
pascal@19825 1468 proc _try_default_args near
pascal@19825 1469
pascal@19825 1470 mov bx,offset tazboot_cmd
pascal@19825 1471 call open
pascal@19825 1472 jc kver2ulret
pascal@19825 1473 mov cx,4096
pascal@19825 1474 mov di,[_heap_top]
pascal@19825 1475 push cx
pascal@19825 1476 extrn read_cmdline:near
pascal@19825 1477 jmp near read_cmdline ; read_cmdline(ax,di,cx)
pascal@19825 1478
pascal@19825 1479 endp _try_default_args
pascal@19825 1480
pascal@19825 1481 endif
pascal@19825 1482
pascal@19515 1483 ends _TEXT
pascal@19515 1484
pascal@19515 1485 end
pascal@19515 1486
pascal@19515 1487 ;###### END OF FILE ############################################
pascal@19825 1488