wok annotate linld/stuff/src/CRTL.ASM @ rev 20540

linld: _fastcall calls (again)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Thu Nov 29 12:11:44 2018 +0100 (2018-11-29)
parents 5211cefde1e4
children 25e3f390625a
rev   line source
pascal@19515 1 ;***************************************************************
pascal@19515 2 ;****** This file is distributed under GPL
pascal@19515 3 ;***************************************************************
pascal@19515 4 ideal
pascal@19515 5 %crefref
pascal@19515 6 %noincl
pascal@19515 7 %nomacs
pascal@19636 8 ifdef NO386
pascal@19636 9 p8086
pascal@19636 10 else
pascal@19515 11 p386
pascal@19636 12 endif
pascal@19515 13
pascal@19515 14 group DGROUP _TEXT,_DATA,_BSS
pascal@19515 15 assume cs:DGROUP,ds:DGROUP
pascal@19515 16
pascal@19515 17 segment _DATA byte public use16 'DATA'
pascal@19515 18
pascal@20451 19 global _heap_top
pascal@20451 20 extrn _bss_end
pascal@19546 21 _heap_top dw _bss_end
pascal@19546 22 msg_hang db "High mem corrupted - not exiting to DOS"
pascal@20527 23 msg_lf db 10,0
pascal@20451 24 vcpi_alloc_err db "VCPI "
pascal@20451 25 msg_malloc db "malloc error",0
pascal@19825 26 ifdef EXTRA
pascal@19825 27 tazboot_cmd db "tazboot.cmd",0
pascal@19825 28 endif
pascal@19515 29
pascal@19515 30 ends _DATA
pascal@19515 31
pascal@19515 32 segment _BSS byte public use16 'BSS'
pascal@19515 33
pascal@20538 34 _xfer_buf db 4096 dup (?)
pascal@19515 35 global _no_exit:byte
pascal@19515 36 _no_exit db ?
pascal@19515 37 filecnt db ? ; in fact 0 minus file count...
pascal@19515 38 nextfilename dw ?
pascal@19571 39 ifdef LARGE_IMAGES
pascal@19571 40 curdata dw ?
pascal@19571 41 endif
pascal@19825 42 ifdef EXTRA
pascal@19825 43 ultoabuf db 12 dup (?)
pascal@19825 44 endif
pascal@19515 45
pascal@19515 46 ends _BSS
pascal@19515 47
pascal@19515 48 segment _TEXT byte public use16 'CODE'
pascal@19515 49
pascal@19515 50 ;***************************************************************
pascal@20538 51 ;_fastcall void strcpy(const char* a, const char* b);
pascal@20539 52 ;_fastcall void strcat(const char* a, const char* b);
pascal@20539 53 ;_fastcall void strcatb(const char* a, const char* b);
pascal@19538 54 ;***************************************************************
pascal@20528 55 global @strcatb$qpxzct1:near
pascal@20528 56 proc @strcatb$qpxzct1 near
pascal@19538 57
pascal@19826 58 ifdef EXTRA
pascal@20142 59 mov cl,7Fh
pascal@20539 60 db 0bah ; mov dx,imm opcode
pascal@20528 61 global @strcat$qpxzct1:near
pascal@20528 62 @strcat$qpxzct1:
pascal@20142 63 mov cl,80h
pascal@20539 64 db 0bah ; mov dx,imm opcode
pascal@20528 65 global @strcpy$qpxzct1:near
pascal@20528 66 @strcpy$qpxzct1:
pascal@20142 67 xor cx,cx
pascal@19826 68 endif
pascal@19538 69 push si
pascal@20538 70 mov si,bx ; a
pascal@20538 71 xchg ax,dx ; b
pascal@19826 72 ifdef EXTRA
pascal@20142 73 jcxz @@nocat
pascal@19826 74 endif
pascal@19538 75 @@catlp:
pascal@19538 76 lodsb
pascal@20527 77 or al,al
pascal@19538 78 jne @@catlp
pascal@19538 79 dec si
pascal@19826 80 ifdef EXTRA
pascal@20142 81 cmp dx,si
pascal@20142 82 adc al,cl ; set S when dx != si or cl = 80
pascal@20142 83 mov al,20h
pascal@20142 84 jns @@cpyhead
pascal@19826 85 endif
pascal@19538 86 @@nocat:
pascal@19538 87 @@cpylp:
pascal@20142 88 mov al,[bx]
pascal@20142 89 inc bx
pascal@20142 90 @@cpyhead:
pascal@19538 91 mov [si],al
pascal@19538 92 inc si
pascal@20527 93 or al,al
pascal@19538 94 jne @@cpylp
pascal@20142 95 strfound:
pascal@20142 96 xchg ax,dx
pascal@20142 97 strend:
pascal@19538 98 pop si
pascal@20142 99 ret
pascal@19538 100
pascal@20528 101 endp @strcatb$qpxzct1
pascal@19538 102
pascal@19538 103
pascal@20146 104 ifdef EXTRA
pascal@20146 105 p8086
pascal@20146 106 ;***************************************************************
pascal@20538 107 ;_fastcall char strstr(const char* a,const char* b);
pascal@20146 108 ;***************************************************************
pascal@20528 109 global @strstr$qpxzct1:near
pascal@20528 110 proc @strstr$qpxzct1 near
pascal@20146 111
pascal@20538 112 xchg ax,cx ; b
pascal@20538 113 mov dx,bx ; a
pascal@20146 114 push si
pascal@20146 115 @@loop:
pascal@20146 116 xor ax,ax
pascal@20146 117 mov si,dx
pascal@20146 118 cmp [si],al ; *a
pascal@20146 119 jz strend ; return ax = NULL
pascal@20146 120 mov bx,cx
pascal@20146 121 @@match:
pascal@20146 122 or ah,[bx] ; *b
pascal@20146 123 jz strfound
pascal@20146 124 inc bx
pascal@20146 125 lodsb
pascal@20146 126 sub ah,al
pascal@20146 127 jz @@match
pascal@20146 128 inc dx
pascal@20146 129 jmp @@loop
pascal@20146 130
pascal@20528 131 endp @strstr$qpxzct1
pascal@20146 132
pascal@20146 133
pascal@20146 134 ;***************************************************************
pascal@20538 135 ;_fastcall int strcmp(const char* a,const char* b);
pascal@20146 136 ;***************************************************************
pascal@20528 137 global @strcmp$qpxzct1:near
pascal@20528 138 proc @strcmp$qpxzct1 near
pascal@20146 139
pascal@20146 140 push si
pascal@20146 141 xchg ax,si
pascal@20146 142 dec bx
pascal@20146 143 @@lp:
pascal@20146 144 inc bx
pascal@20146 145 lodsb
pascal@20146 146 sub al,[bx]
pascal@20146 147 jnz @@out
pascal@20510 148 or al,al
pascal@20146 149 jnz @@lp
pascal@20146 150 @@out:
pascal@20146 151 cbw
pascal@20146 152 pop si
pascal@20146 153 ret
pascal@20146 154
pascal@20528 155 endp @strcmp$qpxzct1
pascal@20146 156 endif
pascal@20146 157
pascal@20146 158
pascal@19538 159 ;***************************************************************
pascal@20538 160 ;_fastcall void puts(const char* s):
pascal@19515 161 ;***************************************************************
pascal@20528 162 global @puts$qpxzc:near
pascal@20528 163 proc @puts$qpxzc near
pascal@19515 164
pascal@20486 165 ; global puts:near ; puts(bx)
pascal@19515 166 puts:
pascal@20510 167 call @@putsz
pascal@20527 168 mov bx,offset msg_lf
pascal@20527 169 mov dl,13
pascal@20510 170 @@putcz:
pascal@20160 171 mov ah,2
pascal@20146 172 int 21h
pascal@20510 173 @@putsz:
pascal@20160 174 mov dl,[bx]
pascal@20146 175 inc bx
pascal@20160 176 or dl,dl
pascal@20510 177 jne @@putcz ; ZF=1 (for malloc failure)
pascal@19538 178 ret
pascal@19515 179
pascal@20528 180 endp @puts$qpxzc
pascal@19515 181
pascal@19515 182
pascal@19515 183 ;***************************************************************
pascal@20538 184 ;_fastcall int fileattr(const char* name);
pascal@19538 185 ;***************************************************************
pascal@20528 186 global @fileattr$qpxzc:near
pascal@20528 187 proc @fileattr$qpxzc near
pascal@19538 188
pascal@19538 189 mov ax,4300h
pascal@20538 190 call dos_filename
pascal@19538 191 xchg ax,cx
pascal@19538 192 jmp chkc
pascal@19538 193
pascal@20528 194 endp @fileattr$qpxzc
pascal@19538 195
pascal@19538 196
pascal@19538 197 ;***************************************************************
pascal@20538 198 ;_fastcall int open(const char* name, int flags=O_RDONLY);
pascal@19515 199 ;***************************************************************
pascal@20538 200 global openargs:near ; openargs(bx)
pascal@20538 201 openargs:
pascal@20538 202 cmp [byte bx],'@'
pascal@20538 203 stc
pascal@20538 204 jne fail
pascal@20538 205 inc bx
pascal@20538 206
pascal@20528 207 global @open$qpxzc:near
pascal@20528 208 proc @open$qpxzc near
pascal@19515 209
pascal@19546 210 global open:near ; open(bx)
pascal@19515 211 open:
pascal@20538 212 mov ax,3d00h ; read-only+compatibility
pascal@20538 213 ;mov cl,0 ; attribute mask
pascal@20538 214 dos_filename:
pascal@19515 215 mov dx,bx
pascal@19515 216 dos:
pascal@19515 217 int 21h
pascal@19538 218 chkc:
pascal@19515 219 jnc doret
pascal@19515 220 fail:
pascal@19515 221 sbb ax,ax ; ax=-1 CF
pascal@19515 222 cwd
pascal@19515 223 doret:
pascal@19515 224 ifndef NO386
pascal@19538 225 push dx ; see next_chunk:lseek
pascal@19538 226 push ax
pascal@19538 227 pop eax
pascal@19515 228 endif
pascal@19515 229 ret
pascal@19515 230
pascal@20528 231 endp @open$qpxzc
pascal@19515 232
pascal@19515 233
pascal@19515 234 ;***************************************************************
pascal@20538 235 ;_fastcall int close(int fd);
pascal@19515 236 ;***************************************************************
pascal@20528 237 global @close$qi:near
pascal@20528 238 proc @close$qi near
pascal@19515 239
pascal@20540 240 global close:near ; close(ax)
pascal@19515 241 close:
pascal@20540 242 xchg ax,bx
pascal@19515 243 mov ah,3Eh
pascal@19515 244 or bx,bx
pascal@19515 245 jnz dos
pascal@19515 246 ret
pascal@19515 247
pascal@20528 248 endp @close$qi
pascal@19515 249
pascal@19515 250
pascal@19515 251 ;***************************************************************
pascal@20538 252 ;_fastcall int read(int fd, void* data, int sz);
pascal@20538 253 ;_fastcall int write(int fd, const void* data, int sz);
pascal@19515 254 ;***************************************************************
pascal@20528 255 global @read$qipvi:near
pascal@20528 256 proc @read$qipvi near
pascal@19515 257
pascal@20146 258 ifdef WRITE
pascal@19580 259 stc
pascal@19634 260 db 0B0h ; mov al,im
pascal@20528 261 global @write$qipvi:near
pascal@20528 262 @write$qipvi:
pascal@19580 263 clc
pascal@20146 264 endif
pascal@20538 265 xchg ax,bx ; fd
pascal@20538 266 xchg ax,dx ; data
pascal@20538 267 xchg ax,cx ; sz
pascal@20146 268 ifdef WRITE
pascal@19580 269 mov ah,40h
pascal@19580 270 sbb ah,0
pascal@20146 271 else
pascal@20528 272 global @read$cxdxbx:near
pascal@20528 273 @read$cxdxbx:
pascal@20146 274 mov ah,3Fh
pascal@20146 275 endif
pascal@19515 276 jcxz fail
pascal@19515 277 jmp dos
pascal@19515 278
pascal@20528 279 endp @read$qipvi
pascal@19515 280
pascal@19515 281 ;***************************************************************
pascal@20538 282 ;_fastcall long lseekset(int fd, unsigned sz);
pascal@19515 283 ;***************************************************************
pascal@19899 284
pascal@20538 285 global @lseekset$qiui:near
pascal@20538 286 proc @lseekset$qiui near
pascal@19515 287
pascal@20538 288 xchg ax,bx ; fd
pascal@20538 289 xor cx,cx ; sz hi
pascal@19571 290 lseekset:
pascal@19571 291 clc
pascal@19634 292 db 0B0h ; mov al,im
pascal@20486 293 ; global rewind:near
pascal@19634 294 rewind: ; rewind(bx)
pascal@19634 295 stc
pascal@19571 296 mov ax,4200h
pascal@19571 297 jnc dos
pascal@19571 298 lseek0: ; lseek0(bx,ax=dir)
pascal@19571 299 cwd
pascal@19571 300 xor cx,cx
pascal@19515 301 jmp dos
pascal@19515 302
pascal@20538 303 endp @lseekset$qiui
pascal@19825 304
pascal@20538 305 ifdef EXTRA
pascal@20538 306
pascal@20534 307 ;typedef unsigned dirsizetype;
pascal@20534 308 struc isostate ; struct isostate {
pascal@20534 309 fd dw ? ; 0 int fd;
pascal@20534 310 filemod dw ? ; 2 unsigned short filemod;
pascal@20534 311 fileofs dd ? ; 4 unsigned long fileofs;
pascal@20534 312 filesize dd ? ; 8 unsigned long filesize;
pascal@20534 313 filename dw ? ;12 char *filename;
pascal@20534 314 curdirsize dw ? ;14 dirsizetype curdirsize;
pascal@20534 315 dirsize dw ? ;16 dirsizetype dirsize;
pascal@20534 316 curdirofs dd ? ;18 unsigned long curdirofs;
pascal@20534 317 dirofs dd ? ;22 unsigned long dirofs;
pascal@20534 318 curpos dw ? ;26 unsigned curpos;
pascal@20534 319 buffer db 2560 dup(?) ;28 char buffer[2048+512];
pascal@20534 320 ends ; } isostate;
pascal@19825 321 ;***************************************************************
pascal@20538 322 ;_fastcall long isolseek(const unsigned long *offset);
pascal@19825 323 ;***************************************************************
pascal@20528 324 global @isolseek$qpxul:near
pascal@20528 325 proc @isolseek$qpxul near
pascal@19825 326
pascal@20534 327 isolseek:
pascal@19825 328 mov dx,[bx]
pascal@19825 329 mov cx,[bx+2]
pascal@19825 330 extrn _isostate:isostate
pascal@19825 331 mov bx,[_isostate.fd]
pascal@20538 332 jmp lseekset
pascal@20534 333
pascal@20538 334 endp @isolseek$qpxul
pascal@20534 335
pascal@20534 336 ;***************************************************************
pascal@20538 337 ;_fastcall int isoreadsector(const unsigned long *offset);
pascal@20534 338 ;***************************************************************
pascal@20534 339 global @isoreadsector$qpxul:near
pascal@20534 340 proc @isoreadsector$qpxul near
pascal@20534 341
pascal@20534 342 call isolseek
pascal@20528 343 and ax,dx
pascal@20528 344 inc ax
pascal@20534 345 jz @@fail
pascal@20534 346 mov cx,2560
pascal@20534 347 mov dx,offset _isostate.buffer
pascal@20534 348 mov bx,[_isostate.fd]
pascal@20534 349 call @read$cxdxbx ; read(fd,buffer,2560)
pascal@20534 350 @@fail:
pascal@20534 351 cmp ax,2048
pascal@20534 352 sbb ax,ax
pascal@20528 353 ret
pascal@20534 354
pascal@20534 355 endp @isoreadsector$qpxul
pascal@20534 356
pascal@19825 357 endif
pascal@19515 358
pascal@19515 359
pascal@19515 360 ;***************************************************************
pascal@20538 361 ;_fastcall int strhead(const char* a,const char* b);
pascal@19515 362 ;***************************************************************
pascal@20528 363 global @strhead$qpxzct1:near
pascal@20528 364 proc @strhead$qpxzct1 near
pascal@19515 365
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@20528 379 endp @strhead$qpxzct1
pascal@19515 380
pascal@19515 381
pascal@19515 382 ;***************************************************************
pascal@20538 383 ;_fastcall char* malloc_or_die(unsigned size);
pascal@19515 384 ;***************************************************************
pascal@20528 385 global @malloc_or_die$qui:near
pascal@20528 386 proc @malloc_or_die$qui near
pascal@19515 387
pascal@20540 388 xchg ax,cx ; size
pascal@19515 389 global malloc_or_die:near ; malloc_or_die(cx)
pascal@19515 390 malloc_or_die:
pascal@20510 391 mov ax,[_heap_top] ; return value
pascal@20510 392 mov bx,sp
pascal@20510 393 add bh,-14h ; MIN_STACK=_1k+PAGE_SIZE
pascal@20510 394 sub bx,ax ; can't overflow
pascal@20510 395 cmp bx,cx
pascal@20456 396 mov bx,offset msg_malloc
pascal@20510 397 jb die
pascal@20510 398 add [_heap_top],cx ; _BEG has zero'd heap
pascal@19515 399 ret
pascal@19515 400
pascal@20528 401 endp @malloc_or_die$qui
pascal@19515 402
pascal@19515 403
pascal@19515 404 ;***************************************************************
pascal@20538 405 ;_fastcall int die(const char* msg);
pascal@19538 406 ;int exit();
pascal@19515 407 ;int abort();
pascal@19515 408 ;***************************************************************
pascal@20528 409 global @die$qpxzc:near
pascal@20528 410 proc @die$qpxzc near
pascal@20528 411 @die$qpxzc:
pascal@19515 412 global die:near ; die(bx)
pascal@19515 413 die:
pascal@19515 414 call puts
pascal@20486 415 ; global _exit:near
pascal@19538 416 _exit:
pascal@19515 417 mov al,[_no_exit]
pascal@20527 418 or al,al
pascal@19515 419 jne @@hang
pascal@19515 420 extrn exit:near
pascal@19515 421 inc ax
pascal@19515 422 jmp near exit
pascal@19515 423 @@hang:
pascal@19515 424 mov bx, offset msg_hang
pascal@19515 425 call puts
pascal@20486 426 ; global _abort:near
pascal@19515 427 _abort:
pascal@19515 428 cli
pascal@19515 429 @@stop:
pascal@19515 430 hlt
pascal@19515 431 jmp @@stop
pascal@19515 432
pascal@20528 433 endp @die$qpxzc
pascal@19515 434
pascal@19546 435 struc image_himem ;struct image_himem {
pascal@19546 436 fd dw ? ; 0 int fd;
pascal@19546 437 fallback dd ? ; 2 u32 fallback;
pascal@19546 438 size dd ? ; 6 u32 size;
pascal@19546 439 remaining dd ? ;10 u32 remaining;
pascal@19546 440 buf dd ? ;14 u32 buf;
pascal@19546 441 bufv dw ? ;18 u32 *bufv;
pascal@19546 442 errmsg dw ? ;20 char *errmsg;
pascal@19546 443 chunk_size dd ? ;22 u32 chunk_size;
pascal@19546 444 next_chunk dw ? ;26 void (*next_chunk)(struct image_himem *);
pascal@19546 445 state dw ? ;28 u16 state;
pascal@19546 446 fd2close dw ? ;30 u16 fd2close;
pascal@19546 447 ends ;};
pascal@19515 448
pascal@19636 449 ;***************************************************************
pascal@20484 450 ;long next_chunk(struct image_himem *di);
pascal@19636 451 ;***************************************************************
pascal@19636 452 proc next_chunk near
pascal@19636 453
pascal@19636 454 push si
pascal@20540 455 mov ax,[(image_himem di).fd]
pascal@19636 456 call close
pascal@19636 457 ifndef NO386
pascal@19636 458 xor eax,eax
pascal@19636 459 else
pascal@19636 460 xor ax,ax
pascal@20485 461 cwd
pascal@19636 462 endif
pascal@19636 463 mov [(image_himem di).fd],ax
pascal@19636 464 mov bx,[(image_himem di).state]
pascal@19636 465 cmp al,[bx] ; ""
pascal@19636 466 jz @@end
pascal@19636 467 mov si,bx
pascal@19636 468 @@scan:
pascal@19636 469 lodsb
pascal@19636 470 mov cx,si
pascal@19636 471 cmp al,','
pascal@19636 472 jz @@eos
pascal@20527 473 or al,al
pascal@19636 474 jnz @@scan
pascal@19636 475 dec cx
pascal@19636 476 @@eos:
pascal@19636 477 mov [(image_himem di).state],cx
pascal@19636 478 dec si
pascal@19636 479 push [word si]
pascal@20485 480 mov [byte si],ah ; set temp eos
pascal@19636 481 call open
pascal@19636 482 pop [word si] ; restore string
pascal@19636 483 jc @@die
pascal@19636 484 mov [(image_himem di).fd],ax
pascal@19636 485 mov [(image_himem di).fd2close],ax
pascal@19636 486 xchg ax,bx
pascal@19636 487 mov ax,4202h ; SEEK_END
pascal@19636 488 call lseek0
pascal@19636 489 @@die:
pascal@19636 490 mov bx,[(image_himem di).errmsg]
pascal@19636 491 jc die
pascal@19636 492 mov bx,[(image_himem di).fd]
pascal@19636 493 ifndef NO386
pascal@19636 494 push eax
pascal@19636 495 call rewind
pascal@19636 496 pop eax
pascal@19636 497 @@end:
pascal@19636 498 mov [(image_himem di).chunk_size],eax
pascal@19636 499 else
pascal@19636 500 push ax
pascal@19636 501 push dx
pascal@19636 502 call rewind
pascal@19636 503 pop dx
pascal@19636 504 pop ax
pascal@19636 505 @@end:
pascal@19636 506 mov [word (image_himem di).chunk_size],ax
pascal@19636 507 mov [word ((image_himem di).chunk_size)+2],dx
pascal@19636 508 endif
pascal@19636 509 pop si
pascal@19636 510 ret
pascal@19636 511
pascal@19636 512 endp next_chunk
pascal@19636 513
pascal@19636 514
pascal@19571 515 ifdef LARGE_IMAGES
pascal@19571 516 struc data_himem ;struct data_himem {
pascal@19571 517 first dd ? ; 0 u32 first;
pascal@19571 518 cacheidx dw ? ; 4 int cacheidx;
pascal@19571 519 pageidx dw ? ; 6 int pageidx;
pascal@19571 520 cache dd 1024 dup(?) ; 8 int cache;
pascal@19571 521 page dd 1024 dup(?) ;4104 int page;
pascal@19571 522 ends ;}; // size=8200
pascal@19571 523 endif
pascal@19571 524
pascal@19515 525 ;***************************************************************
pascal@20538 526 ;_fastcall u32* malloc_bufv_or_die(struct image_himem *m);
pascal@19538 527 ;***************************************************************
pascal@20528 528 global @malloc_bufv_or_die$qp11image_himem:near
pascal@20528 529 proc @malloc_bufv_or_die$qp11image_himem near
pascal@19538 530
pascal@19636 531 p386
pascal@19538 532 push si
pascal@20538 533 mov si,bx
pascal@19571 534 ifdef LARGE_IMAGES
pascal@20527 535 movzx ecx,[word ((image_himem si).size) + 2]
pascal@19571 536 shr cx,4 ; pages index size = size >> 20
pascal@19571 537 add cx,8+4096+8
pascal@19571 538 call malloc_or_die
pascal@20527 539 mov cx,4096+4095 ; cnt = 1+(m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19571 540 add ecx,[(image_himem si).size]
pascal@19571 541 shr ecx,12
pascal@19571 542 mov [curdata],ax
pascal@19571 543 else
pascal@19546 544 mov ecx,[(image_himem si).size]
pascal@19538 545 dec ecx
pascal@19538 546 shr ecx,12
pascal@19538 547 inc cx ; cnt = (m->size+PAGE_MASK)/PAGE_SIZE;
pascal@19538 548 push cx
pascal@19538 549 inc cx ; cnt+1
pascal@19538 550 shl cx,2 ; bufv => vcpi => vm86
pascal@19538 551 ; our malloc zeroes allocated mem: bufv[cnt]=0;
pascal@19538 552 ; Allocate pages, storing addrs in addrbuf
pascal@19538 553 call malloc_or_die
pascal@19571 554 pop cx
pascal@19571 555 push ax
pascal@19571 556 endif
pascal@19546 557 mov [(image_himem si).bufv],ax
pascal@19571 558 xchg ax,si
pascal@19538 559 @@vcpi_alloc:
pascal@19538 560 xor edx,edx
pascal@19538 561 mov ax,0DE04h
pascal@19538 562 int 67h
pascal@19538 563 or ah,ah
pascal@19538 564 mov bx,offset vcpi_alloc_err
pascal@19571 565 jnz die
pascal@19571 566 ; for (i = cnt-1; i >= 0; i--)
pascal@19571 567 ifdef LARGE_IMAGES
pascal@19571 568 mov eax,ecx
pascal@19571 569 dec eax
pascal@19571 570 else
pascal@19571 571 mov ax,cx
pascal@19571 572 dec ax
pascal@19571 573 cwde
pascal@19571 574 endif
pascal@19571 575 shl eax,12 ; i*_4k
pascal@19571 576 ; if (edx < pm.fallback+i*_4k && edx >= pm.fallback) again
pascal@19899 577 extrn _imgs
pascal@19899 578 mov bx,offset _imgs+2
pascal@19571 579 push eax
pascal@19571 580 add eax,[bx-2+2]
pascal@19571 581 cmp eax,edx ; pm.fallback+i*_4k <= edx ?
pascal@19571 582 pop eax ; i*_4k
pascal@19571 583 jbe @@pmok
pascal@19571 584 cmp edx,[bx-2+2] ; edx >= pm.fallback ?
pascal@19571 585 jae @@vcpi_alloc
pascal@19571 586 @@pmok:
pascal@19571 587 ; if (edx >= initrd.fallback+i*_4k && edx < initrd.fallback+initrd.size) again
pascal@19899 588 extrn _imgs
pascal@19899 589 mov bx,offset _imgs+32+2
pascal@19571 590 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 591 cmp eax,edx ; initrd.fallback+i*_4k > edx ?
pascal@19571 592 ja @@initrdok
pascal@19571 593 mov eax,[bx-2+6] ; initrd.size
pascal@19571 594 add eax,[bx-2+2] ; +initrd.fallback
pascal@19571 595 cmp eax,edx ; initrd.fallback+initrd.size > edx ?
pascal@19571 596 @@jnc_vcpi_alloc:
pascal@19571 597 ja @@vcpi_alloc
pascal@19571 598 @@initrdok:
pascal@19571 599 ifdef LARGE_IMAGES
pascal@19571 600 cmp [(data_himem si).first],0
pascal@19571 601 jne @@notfirst
pascal@19571 602 mov [(data_himem si).first],edx
pascal@19571 603 @@notfirst:
pascal@19571 604 mov bx,[(data_himem si).cacheidx]
pascal@19571 605 cmp bh,4
pascal@19571 606 jae @@nextpage
pascal@19571 607 shl bx,2
pascal@19571 608 inc [(data_himem si).cacheidx]
pascal@19571 609 mov [(data_himem bx+si).cache],edx
pascal@19571 610 loopd @@vcpi_alloc
pascal@19571 611 mov [(data_himem bx+si).cache],ecx ; last is 0
pascal@19571 612 @@nextpage:
pascal@19571 613 and [(data_himem si).cacheidx],0
pascal@19571 614 mov bx,[(data_himem si).pageidx]
pascal@19571 615 mov [(data_himem bx+si).page],edx
pascal@19571 616 add [(data_himem si).pageidx],4
pascal@19571 617 push cx
pascal@19571 618 lea cx,[(data_himem si).cache]
pascal@19571 619 ifdef NO386
pascal@19571 620 push edx
pascal@19571 621 pop dx
pascal@19571 622 pop ax
pascal@19571 623 endif
pascal@19571 624 call storepage ; storepage(edx,cx)
pascal@19571 625 pop cx
pascal@19571 626 or ecx,ecx ; clear C
pascal@19571 627 jnz @@jnc_vcpi_alloc
pascal@19571 628 mov [dword (data_himem si).cacheidx],ecx
pascal@19571 629 xchg ax,si
pascal@19571 630 else
pascal@19571 631 mov [si],edx
pascal@19571 632 lodsd ; si=+4
pascal@19538 633 loop @@vcpi_alloc
pascal@19538 634 pop ax
pascal@19571 635 endif
pascal@19538 636 pop si
pascal@19538 637 ret
pascal@19636 638 ifdef NO386
pascal@19636 639 p8086
pascal@19636 640 endif
pascal@19538 641
pascal@20528 642 endp @malloc_bufv_or_die$qp11image_himem
pascal@19538 643
pascal@19538 644
pascal@19538 645 ;***************************************************************
pascal@20538 646 ;_fastcall void memcpy_image(struct image_himem *m);
pascal@19515 647 ;***************************************************************
pascal@20528 648 global @memcpy_image$qp11image_himem:near
pascal@20528 649 proc @memcpy_image$qp11image_himem near
pascal@19515 650
pascal@19571 651 ifndef NO386
pascal@19571 652 mov edx,[(image_himem bx).fallback]
pascal@19571 653 mov eax,[(image_himem bx).buf]
pascal@19571 654 cmp eax,edx ; if (m->fallback != m->buf)
pascal@19571 655 jz @@skip ; memcpy32(m->fallback,0,m->buf,m->size)
pascal@19571 656 ifdef LARGE_IMAGES
pascal@19571 657 mov ecx,[(image_himem bx).size]
pascal@20146 658 memcpy_imagez: ; memcpy_imagez(edx,eax,ecx)
pascal@19571 659 push ecx
pascal@19571 660 else
pascal@19571 661 push [(image_himem bx).size]
pascal@19571 662 endif
pascal@19571 663 push eax
pascal@19571 664 push 0
pascal@19571 665 call_memcpy32:
pascal@19571 666 push edx
pascal@19571 667 else
pascal@19571 668 mov ax,[word ((image_himem bx).fallback)]
pascal@19571 669 mov dx,[word ((image_himem bx).fallback)+2]
pascal@19571 670 mov cx,[word ((image_himem bx).buf)]
pascal@19571 671 cmp ax,cx ; if (m->fallback != m->buf)
pascal@19571 672 jnz @@do
pascal@19571 673 cmp dx,[word ((image_himem bx).buf)+2]
pascal@19571 674 jz @@skip ; memcpy32(m->fallback,0,m->buf,m->size)
pascal@19571 675 @@do:
pascal@19571 676 push [word ((image_himem bx).size)+2]
pascal@19571 677 push [word ((image_himem bx).size)]
pascal@19571 678 push [word ((image_himem bx).buf)+2]
pascal@19571 679 push cx
pascal@19571 680 xor cx,cx
pascal@19571 681 push cx
pascal@19571 682 call_memcpy32:
pascal@19571 683 push dx
pascal@19571 684 push ax
pascal@19571 685 ifdef LARGE_IMAGES
pascal@19571 686 jmp @@memcpy
pascal@20146 687 memcpy_imagez: ; memcpy_imagez(edx,eax,ecx)
pascal@19636 688 p386
pascal@19571 689 push ecx
pascal@19571 690 push eax
pascal@19571 691 push 0
pascal@19571 692 push edx
pascal@19636 693 ifdef NO386
pascal@19636 694 p8086
pascal@19636 695 endif
pascal@19571 696 endif
pascal@19571 697 endif
pascal@19571 698 @@memcpy:
pascal@20528 699 extrn memcpy32:near
pascal@20528 700 call near memcpy32
pascal@19571 701 @@skip:
pascal@19571 702 ret
pascal@19571 703
pascal@20528 704 endp @memcpy_image$qp11image_himem
pascal@19571 705
pascal@19571 706 ;***************************************************************
pascal@20538 707 ;_fastcall void storepage(u32 *dst);
pascal@19571 708 ;***************************************************************
pascal@20538 709 global @storepage$qpul:near
pascal@20538 710 proc @storepage$qpul near
pascal@19571 711
pascal@19571 712 ifndef NO386
pascal@19571 713 mov edx,[bx]
pascal@19571 714 else
pascal@19571 715 mov ax,[bx]
pascal@19571 716 mov dx,[bx+2]
pascal@19571 717 endif
pascal@20538 718 mov cx,offset _xfer_buf
pascal@20146 719 storepage: ; storepage(edx,cx)
pascal@19571 720 ifndef NO386
pascal@19571 721 push 0
pascal@19571 722 push 4096
pascal@19571 723 push 0
pascal@19571 724 else
pascal@19571 725 xor bx,bx
pascal@19571 726 push bx
pascal@19571 727 mov bh,4096/256
pascal@19571 728 push bx
pascal@19571 729 xor bx,bx
pascal@19571 730 push bx
pascal@19571 731 endif
pascal@19571 732 push cx
pascal@19571 733 push ds
pascal@19571 734 jmp call_memcpy32
pascal@19571 735
pascal@20538 736 endp @storepage$qpul
pascal@19571 737
pascal@19571 738
pascal@19571 739 ifdef LARGE_IMAGES
pascal@19636 740 p386
pascal@19571 741 ;***************************************************************
pascal@20538 742 ;_fastcall void reset_bufv(u32 *p);
pascal@19571 743 ;***************************************************************
pascal@20528 744 global @reset_bufv$qpul:near
pascal@20528 745 proc @reset_bufv$qpul near
pascal@19571 746
pascal@20524 747 mov [curdata],bx
pascal@19571 748 and [dword (data_himem bx).cacheidx],0
pascal@19571 749 ret
pascal@19571 750
pascal@20528 751 endp @reset_bufv$qpul
pascal@19571 752
pascal@19571 753 ;***************************************************************
pascal@19571 754 ;u32* prev_bufv();
pascal@19571 755 ;u32* prev_bufv();
pascal@19571 756 ;***************************************************************
pascal@19571 757 global _prev_bufv:near
pascal@19571 758 global _next_bufv:near
pascal@19571 759 proc _prev_bufv near
pascal@19571 760
pascal@19571 761 stc
pascal@19571 762 db 73h ; jnc
pascal@19571 763 _next_bufv:
pascal@19571 764 clc
pascal@20528 765 push si
pascal@20528 766 mov si,[curdata]
pascal@19571 767 sbb ax,ax
pascal@20527 768 cmc
pascal@20527 769 adc ax,[(data_himem si).cacheidx] ; -1/+1
pascal@19571 770 xor ecx,ecx
pascal@19571 771 test ax,0fc00h
pascal@19571 772 jz @@gotpage
pascal@19571 773 push ax ; FFFF / 0400
pascal@19571 774 sar ax,8 ; FFFC / 0004
pascal@19571 775 and al,0fch
pascal@19571 776 add [(data_himem si).pageidx],ax
pascal@19571 777 mov bx,[(data_himem si).pageidx]
pascal@19571 778 lea bx,[(data_himem bx+si).page]
pascal@19571 779 mov edx,ds
pascal@19571 780 shl edx,4
pascal@19571 781 lea cx,[(data_himem si).cache]
pascal@19571 782 add edx,ecx
pascal@19571 783 mov eax,[bx]
pascal@19571 784 or eax,eax
pascal@19571 785 jnz @@pageok
pascal@19571 786 pop ax
pascal@19571 787 xchg ax,bx
pascal@19571 788 pop si
pascal@19571 789 ret
pascal@19571 790 @@pageok:
pascal@19571 791 mov cx,4096
pascal@19571 792 call memcpy_imagez ; get page
pascal@19571 793 pop ax ; FFFF / 0400
pascal@19571 794 cbw
pascal@19571 795 shr ax,6 ; 03FF / 0000
pascal@19571 796 @@gotpage:
pascal@19571 797 mov [(data_himem si).cacheidx],ax
pascal@19571 798 shl ax,2
pascal@19571 799 xchg ax,bx
pascal@19571 800 lea ax,[(data_himem bx+si).cache]
pascal@19571 801 or bx,[(data_himem si).pageidx] ; !pageidx && !cacheidx
pascal@19571 802 jnz @@notfirst2
pascal@19571 803 xchg ax,si ; &first
pascal@19571 804 @@notfirst2:
pascal@19571 805 pop si
pascal@19571 806 ret
pascal@19571 807
pascal@19571 808 endp _prev_bufv
pascal@19571 809 endif
pascal@19571 810
pascal@20146 811 ifdef NO386
pascal@20146 812 p8086
pascal@20146 813 endif
pascal@19571 814
pascal@19571 815 ;***************************************************************
pascal@20538 816 ;_fastcall void open_image(const char *name, struct image_himem *m);
pascal@19515 817 ;***************************************************************
pascal@20528 818 global @open_image$qpxzcp11image_himem:near
pascal@20528 819 proc @open_image$qpxzcp11image_himem near
pascal@19515 820
pascal@20484 821 push di
pascal@20485 822 xchg ax,di
pascal@20538 823 ifdef EXTRA
pascal@20538 824 cmp [(image_himem di).fd],0 ; iso image/kernel ?
pascal@20538 825 jnz @@alreadydone
pascal@20538 826 endif
pascal@20484 827 mov [(image_himem di).state],bx
pascal@20484 828 push bx
pascal@20534 829 ifdef EXTRA
pascal@20538 830 cmp [(image_himem di).next_chunk],0 ; iso image/initrd ?
pascal@20538 831 jnz @@next
pascal@20534 832 endif
pascal@20534 833 mov [(image_himem di).next_chunk],offset next_chunk
pascal@19515 834 @@next:
pascal@19546 835 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@19515 836 ifndef NO386
pascal@19515 837 add eax,3
pascal@19515 838 and al,0FCh
pascal@19546 839 add [(image_himem di).size],eax ; m->size += m->chunk_size
pascal@19515 840 or eax,eax
pascal@19515 841 else
pascal@19515 842 add ax,3
pascal@19515 843 adc dx,0
pascal@19515 844 and al,0FCh
pascal@19546 845 add [word (image_himem di).size],ax ; m->size += m->chunk_size
pascal@19546 846 adc [word ((image_himem di).size)+2],dx
pascal@20520 847 or ax,dx
pascal@19515 848 endif
pascal@20520 849 jnz @@next
pascal@20484 850 pop [(image_himem di).state]
pascal@19546 851 call [(image_himem di).next_chunk] ; m->next_chunk()
pascal@20538 852 @@alreadydone:
pascal@20484 853 pop di
pascal@19515 854 ret
pascal@19515 855
pascal@20528 856 endp @open_image$qpxzcp11image_himem
pascal@19515 857
pascal@19515 858
pascal@19515 859 ;***************************************************************
pascal@20538 860 ;_fastcall int read_image(struct image_himem *m);
pascal@19515 861 ;***************************************************************
pascal@20538 862 global @read_image$qp11image_himem:near
pascal@20538 863 proc @read_image$qp11image_himem near
pascal@19515 864
pascal@20539 865 push si di
pascal@20538 866 mov di,bx
pascal@20539 867 mov si,4096
pascal@20539 868 push si ; original size
pascal@19515 869 @@loop:
pascal@19538 870 ifndef NO386
pascal@20539 871 movzx ecx,si
pascal@19546 872 mov eax,[(image_himem di).chunk_size]
pascal@19538 873 cmp ecx,eax
pascal@19538 874 jb @@szok
pascal@19538 875 else
pascal@20539 876 mov cx,si
pascal@19546 877 mov ax,[word (image_himem di).chunk_size]
pascal@19538 878 cmp cx,ax
pascal@19515 879 jb @@szok
pascal@19546 880 cmp [word ((image_himem di).chunk_size)+2],0 ; hi m->chunk_size
pascal@19515 881 jne @@szok
pascal@20484 882 endif
pascal@19515 883 xchg ax,cx
pascal@19515 884 @@szok:
pascal@19538 885 jcxz image_done
pascal@20539 886 mov dx,offset _xfer_buf
pascal@20538 887 mov bx,[di]
pascal@20528 888 call @read$cxdxbx
pascal@19538 889 jc image_done
pascal@19515 890 xor cx,cx
pascal@20539 891 cwd ; ax < 8000h
pascal@19538 892 ifndef NO386
pascal@19538 893 cwde ; ax < 8000h
pascal@19546 894 sub [(image_himem di).chunk_size],eax
pascal@20539 895 mov bx,ax
pascal@19538 896 else
pascal@19546 897 sub [word (image_himem di).chunk_size],ax
pascal@20539 898 xchg ax,bx
pascal@19546 899 sbb [word ((image_himem di).chunk_size)+2],dx
pascal@19538 900 jnz @@fill
pascal@19546 901 cmp [word (image_himem di).chunk_size],dx
pascal@19538 902 endif
pascal@19538 903 jnz @@fill
pascal@20539 904 dec cx
pascal@19515 905 @@fill:
pascal@20539 906 test bl,3
pascal@19515 907 je @@filled
pascal@20539 908 mov [bx+_xfer_buf],dh
pascal@20539 909 inc bx
pascal@19515 910 jmp @@fill
pascal@19515 911 @@filled:
pascal@19538 912 ifndef NO386
pascal@19546 913 sub [(image_himem di).remaining],eax
pascal@19538 914 else
pascal@20539 915 sub [word (image_himem di).remaining],bx
pascal@19546 916 sbb [word ((image_himem di).remaining)+2],dx
pascal@19538 917 endif
pascal@20539 918 sub si,ax
pascal@19538 919 pushf
pascal@20539 920 and cx,[(image_himem di).next_chunk]
pascal@20484 921 jcxz @@same_chunk
pascal@20539 922 call cx
pascal@19538 923 @@same_chunk:
pascal@19538 924 popf
pascal@19538 925 jnz @@loop
pascal@20484 926 image_done:
pascal@20528 927 pop ax ; original size
pascal@20539 928 sub ax,si
pascal@20539 929 pop di si
pascal@20538 930 ret
pascal@19515 931
pascal@20538 932 endp @read_image$qp11image_himem
pascal@19515 933
pascal@19515 934
pascal@19515 935 ;***************************************************************
pascal@20528 936 ;pascal unsigned long strtol(const char *s);
pascal@19515 937 ;***************************************************************
pascal@20528 938 global @strtol$qpxzc:near
pascal@20528 939 proc @strtol$qpxzc near
pascal@19515 940
pascal@20538 941 pop ax
pascal@20538 942 pop bx ; s
pascal@19515 943 push ax
pascal@20528 944 ifndef NO386
pascal@19515 945 xor ebx,ebx
pascal@19515 946 push si
pascal@19634 947 jcxz @@end
pascal@19515 948 mov si,cx
pascal@19515 949 xor ecx,ecx
pascal@19515 950 xor eax,eax
pascal@19515 951 lodsb
pascal@19634 952 mov dx,ax
pascal@19634 953 or al,20h
pascal@19634 954 cmp al,'n' ; vga=normal
pascal@19538 955 je @@vga
pascal@19538 956 dec cx
pascal@19634 957 cmp al,'e' ; vga=extended
pascal@19538 958 je @@vga
pascal@19538 959 dec cx
pascal@19634 960 cmp al,'a' ; vga=ask
pascal@19538 961 jne @@notvga
pascal@19538 962 @@vga:
pascal@19538 963 dec cx
pascal@19538 964 xchg ax,cx
pascal@19538 965 cwd
pascal@19634 966 jmp @@popsiret
pascal@19538 967 @@notvga:
pascal@19538 968 mov cx,10 ; radix
pascal@19634 969 xchg ax,dx
pascal@19515 970 cmp al,'+'
pascal@19515 971 je @@radixskip
pascal@19515 972 cmp al,'-'
pascal@19515 973 clc
pascal@19515 974 jne @@radixkeep
pascal@19515 975 stc
pascal@19515 976 @@radixskip:
pascal@19515 977 lodsb
pascal@19515 978 @@radixkeep:
pascal@19515 979 pushf
pascal@19515 980 cmp al,'0'
pascal@19515 981 jne @@radixok
pascal@19515 982 mov cl,8
pascal@19515 983 lodsb
pascal@19634 984 or al,20h
pascal@19634 985 cmp al,'x'
pascal@19515 986 jne @@radixok
pascal@19515 987 mov cl,16
pascal@19515 988 @@strtollp:
pascal@19515 989 lodsb
pascal@19515 990 @@radixok:
pascal@19634 991 or al,20h
pascal@19515 992 sub al,'0'
pascal@19515 993 jb @@endstrtol
pascal@19515 994 cmp al,9
pascal@19515 995 jbe @@digitok
pascal@19515 996 cmp al,'a'-'0'
pascal@19515 997 jb @@endstrtol
pascal@19515 998 sub al,'a'-'0'-10
pascal@19515 999 @@digitok:
pascal@19515 1000 cmp al,cl
pascal@19515 1001 jae @@endstrtol
pascal@19515 1002 xchg eax,ebx
pascal@19515 1003 mul ecx
pascal@19515 1004 add eax,ebx
pascal@19515 1005 xchg eax,ebx
pascal@19515 1006 jmp @@strtollp
pascal@19515 1007 @@endstrtol:
pascal@19515 1008 mov cl,10
pascal@19515 1009 cmp al,'k'-'a'+10
pascal@19515 1010 je @@shift
pascal@19515 1011 mov cl,20
pascal@19515 1012 cmp al,'m'-'a'+10
pascal@19515 1013 je @@shift
pascal@19515 1014 mov cl,30
pascal@19515 1015 cmp al,'g'-'a'+10
pascal@19515 1016 jne @@noshift
pascal@19515 1017 @@shift:
pascal@19515 1018 shl ebx,cl
pascal@19515 1019 @@noshift:
pascal@19515 1020 popf
pascal@19515 1021 jnc @@end
pascal@19515 1022 neg ebx
pascal@19515 1023 @@end:
pascal@19515 1024 push ebx
pascal@19515 1025 pop ax
pascal@19515 1026 pop dx
pascal@19634 1027 @@popsiret:
pascal@19515 1028 pop si
pascal@19515 1029 else
pascal@19515 1030 push si
pascal@19515 1031 push di
pascal@19515 1032 xor ax,ax
pascal@19515 1033 cwd
pascal@19634 1034 jcxz @@goend
pascal@19515 1035 xchg ax,di
pascal@19515 1036 mov si,cx
pascal@19538 1037 lodsb
pascal@19634 1038 mov bx,ax
pascal@19634 1039 or al,20h
pascal@19538 1040 mov cx,-1
pascal@19634 1041 cmp al,'n' ; vga=normal
pascal@19538 1042 je @@vga
pascal@19538 1043 dec cx
pascal@19634 1044 cmp al,'e' ; vga=extended
pascal@19538 1045 je @@vga
pascal@19538 1046 dec cx
pascal@19634 1047 cmp al,'a' ; vga=ask
pascal@19538 1048 jne @@notvga
pascal@19538 1049 @@vga:
pascal@19538 1050 xchg ax,cx
pascal@19538 1051 @@goend:
pascal@19634 1052 jmp @@popdisiret
pascal@19538 1053 @@notvga:
pascal@19515 1054 mov cx,10 ; radix
pascal@19634 1055 xchg ax,bx
pascal@19515 1056 cmp al,'+'
pascal@19515 1057 je @@radixskip
pascal@19515 1058 cmp al,'-'
pascal@19515 1059 clc
pascal@19515 1060 jne @@radixkeep
pascal@19515 1061 stc
pascal@19515 1062 @@radixskip:
pascal@19515 1063 lodsb
pascal@19515 1064 @@radixkeep:
pascal@19515 1065 pushf
pascal@19515 1066 cmp al,'0'
pascal@19515 1067 jne @@radixok
pascal@19515 1068 mov cl,8
pascal@19515 1069 lodsb
pascal@20146 1070 or al,20h
pascal@19634 1071 cmp al,'x'
pascal@19515 1072 jne @@radixok
pascal@19515 1073 mov cl,16
pascal@19515 1074 @@strtollp:
pascal@19515 1075 lodsb
pascal@19515 1076 @@radixok:
pascal@19634 1077 or al,20h
pascal@19515 1078 sub al,'0'
pascal@19515 1079 jb @@endstrtol
pascal@19515 1080 cmp al,9
pascal@19515 1081 jbe @@digitok
pascal@19515 1082 cmp al,'a'-'0'
pascal@19515 1083 jb @@endstrtol
pascal@19515 1084 sub al,'a'-'0'-10
pascal@19515 1085 @@digitok:
pascal@19515 1086 cmp al,cl
pascal@19515 1087 jae @@endstrtol
pascal@19515 1088
pascal@19515 1089 push ax
pascal@19515 1090 push si
pascal@19515 1091 push dx
pascal@19515 1092 xchg ax,di
pascal@19515 1093 mul cx
pascal@19515 1094 xchg ax,di
pascal@19515 1095 xchg ax,dx
pascal@19515 1096 xchg ax,si
pascal@19515 1097 pop ax
pascal@19515 1098 mul cx
pascal@19515 1099 add ax,si
pascal@19515 1100 pop si
pascal@19515 1101 xchg ax,dx
pascal@19515 1102 pop ax
pascal@19515 1103 mov ah,0
pascal@19515 1104 add di,ax
pascal@19515 1105 adc dx,0
pascal@19515 1106
pascal@19515 1107 jmp @@strtollp
pascal@19515 1108 @@endstrtol:
pascal@19515 1109 mov cl,10
pascal@19515 1110 cmp al,'k'-'a'+10
pascal@19515 1111 je @@shift
pascal@19515 1112 mov cl,20
pascal@19515 1113 cmp al,'m'-'a'+10
pascal@19515 1114 je @@shift
pascal@19515 1115 mov cl,30
pascal@19515 1116 cmp al,'g'-'a'+10
pascal@19515 1117 jne @@noshift
pascal@19515 1118 @@shift:
pascal@19515 1119 rcl di,1
pascal@19515 1120 shl dx,1
pascal@19515 1121 loop @@shift
pascal@19515 1122 @@noshift:
pascal@19515 1123 popf
pascal@19515 1124 jnc @@end
pascal@19515 1125 not dx
pascal@19515 1126 neg di
pascal@19515 1127 jne @@end
pascal@19515 1128 inc dx
pascal@19515 1129 @@end:
pascal@19515 1130 xchg ax,di
pascal@19634 1131 @@popdisiret:
pascal@19515 1132 pop di
pascal@19515 1133 pop si
pascal@19515 1134 endif
pascal@20528 1135 strtol_ret:
pascal@19515 1136 ret
pascal@19515 1137
pascal@20528 1138 endp @strtol$qpxzc
pascal@19515 1139
pascal@19515 1140
pascal@19515 1141 ifdef NO386
pascal@19515 1142 ;***************************************************************
pascal@19515 1143 ;u16 topseg();
pascal@19515 1144 ;***************************************************************
pascal@19515 1145 global _topseg:near
pascal@19515 1146 proc _topseg near
pascal@19515 1147
pascal@19515 1148 int 12h
pascal@19515 1149 jnc @@max640k
pascal@19515 1150 mov ax,640 ; 9000
pascal@19515 1151 @@max640k:
pascal@19634 1152 dec ax
pascal@19515 1153 and al,0C0h
pascal@19515 1154 mov cl,6
pascal@19515 1155 shl ax,cl
pascal@19515 1156 ret
pascal@19515 1157
pascal@19515 1158 endp _topseg
pascal@19515 1159 endif
pascal@19515 1160
pascal@19825 1161 ifdef EXTRA
pascal@19825 1162 p8086
pascal@19825 1163 ;***************************************************************
pascal@19825 1164 ;char *progname(void)
pascal@19825 1165 ;***************************************************************
pascal@19825 1166 global _progname:near
pascal@19825 1167 proc _progname near
pascal@19825 1168
pascal@19825 1169 push si di es
pascal@19825 1170 mov ah,30h
pascal@19825 1171 int 21h
pascal@19875 1172 xor di,di
pascal@19825 1173 cmp al,3
pascal@19874 1174 mov ax,di
pascal@19825 1175 jb @@skip
pascal@19873 1176 ;mov es,[cs:2Ch]
pascal@19874 1177 mov es,[di+2Ch]
pascal@20146 1178 mov cx,sp ; big enough
pascal@19870 1179 @@loop:
pascal@19825 1180 repne
pascal@19825 1181 scasb
pascal@19825 1182 scasb
pascal@19870 1183 jne @@loop
pascal@19870 1184 inc di
pascal@19870 1185 inc di
pascal@19870 1186 mov si,di ; progname @es:di
pascal@19870 1187 repne
pascal@19870 1188 scasb
pascal@19870 1189 mov cx,di
pascal@19874 1190 sub cx,si ; progname len
pascal@19870 1191 call malloc_or_die ; keep cx
pascal@19870 1192 mov di,ax
pascal@19825 1193 push ds
pascal@19825 1194 push es
pascal@19825 1195 pop ds
pascal@19825 1196 pop es
pascal@19870 1197 rep
pascal@19870 1198 movsb
pascal@19870 1199 push es
pascal@19825 1200 pop ds
pascal@19825 1201 @@skip:
pascal@19825 1202 pop es di si
pascal@19825 1203 ret
pascal@19825 1204
pascal@19825 1205 endp _progname
pascal@19825 1206
pascal@19825 1207
pascal@19825 1208 ;***************************************************************
pascal@20538 1209 ;_fastcall void chdirname(char *path)
pascal@19825 1210 ;***************************************************************
pascal@20528 1211 global @chdirname$qpzc:near
pascal@20528 1212 proc @chdirname$qpzc near
pascal@19825 1213
pascal@20146 1214 cmp [byte bx+1],3Ah ; ':'
pascal@19825 1215 jne @@nodisk
pascal@19875 1216 mov dl,20h
pascal@19875 1217 or dl,[bx]
pascal@19825 1218 sub dl,61h
pascal@19825 1219 mov ah,0Eh
pascal@19825 1220 int 21h
pascal@19825 1221 inc bx
pascal@19825 1222 inc bx
pascal@19825 1223 @@nodisk:
pascal@19825 1224 xor cx,cx
pascal@19825 1225 @@next:
pascal@19825 1226 mov al,[bx]
pascal@19825 1227 cmp al,5Ch
pascal@19825 1228 jne @@tsteos
pascal@19875 1229 mov dx,bx
pascal@19875 1230 inc cx
pascal@19825 1231 @@tsteos:
pascal@19825 1232 inc bx
pascal@19825 1233 or al,al
pascal@19825 1234 jnz @@next
pascal@19825 1235 jcxz @@end
pascal@19875 1236 mov bx,dx
pascal@19825 1237 push [word bx]
pascal@19825 1238 mov [bx],al
pascal@19875 1239 stc
pascal@20146 1240 mov ax,713Bh ; chdir long filename (ds:dx)
pascal@19875 1241 int 21h
pascal@20146 1242 mov ah,3Bh ; chdir(ds:dx)
pascal@20510 1243 jnc @@chdirdone
pascal@19875 1244 int 21h
pascal@20510 1245 @@chdirdone:
pascal@19825 1246 pop [word bx]
pascal@19825 1247 @@end:
pascal@19825 1248 ret
pascal@19825 1249
pascal@20528 1250 endp @chdirname$qpzc
pascal@19825 1251
pascal@19825 1252
pascal@19825 1253 ;***************************************************************
pascal@20538 1254 ;_fastcall char *ultoa(unsigned long n);
pascal@19825 1255 ;***************************************************************
pascal@20528 1256 global @ultoa$qul:near
pascal@20528 1257 proc @ultoa$qul near
pascal@19825 1258
pascal@20538 1259 xchg ax,cx
pascal@20538 1260 xchg ax,dx ; AX:CX = n
pascal@19825 1261 push si
pascal@19825 1262 mov si,10
pascal@19825 1263 mov bx,offset ultoabuf+11
pascal@19825 1264 @@loop:
pascal@19825 1265 dec bx
pascal@19825 1266 xor dx,dx
pascal@19825 1267 div si ; DX:AX = 0000:hi(n)
pascal@19825 1268 xchg ax,cx ; CX = hi(n)/10
pascal@19825 1269 div si ; DX:AX = hi(n)%10:lo(n)
pascal@19825 1270 xchg ax,cx ; CX = lo(n/10)
pascal@20528 1271 ; AX = hi(n)/10 = hi(n/10)
pascal@20528 1272 mov [byte bx],'0'
pascal@20528 1273 add [bx],dl ; DL = n%10
pascal@20528 1274 mov dx,ax
pascal@20528 1275 or dx,cx
pascal@19825 1276 jnz @@loop
pascal@19825 1277 xchg ax,bx
pascal@19825 1278 pop si
pascal@19825 1279 ret
pascal@19825 1280
pascal@20528 1281 endp @ultoa$qul
pascal@19825 1282
pascal@19825 1283
pascal@19825 1284 ;***************************************************************
pascal@20538 1285 ;_fastcall unsigned long kver2ul(char *kernel_version);
pascal@19825 1286 ;***************************************************************
pascal@20528 1287 global @kver2ul$qpzc:near
pascal@20528 1288 proc @kver2ul$qpzc near
pascal@19825 1289
pascal@20146 1290 push si
pascal@20538 1291 mov si,bx
pascal@20146 1292 xor bx,bx
pascal@20146 1293 mov cx,304h
pascal@19825 1294 @@number:
pascal@19825 1295 xor ax,ax
pascal@20146 1296 cwd
pascal@19825 1297 @@digit:
pascal@19825 1298 shl al,cl
pascal@19825 1299 shl ax,cl
pascal@19825 1300 lodsb
pascal@19825 1301 sub al,30h
pascal@19825 1302 cmp al,9
pascal@19825 1303 jbe @@digit
pascal@20146 1304 mov dl,bh
pascal@20146 1305 mov bh,bl
pascal@20146 1306 mov bl,ah
pascal@20146 1307 dec ch
pascal@20146 1308 jnz @@number
pascal@20146 1309 xchg ax,bx
pascal@20146 1310 pop si
pascal@19825 1311 kver2ulret:
pascal@19825 1312 ret
pascal@19825 1313
pascal@20528 1314 endp @kver2ul$qpzc
pascal@19825 1315
pascal@20528 1316 endif
pascal@19825 1317
pascal@19825 1318 ;***************************************************************
pascal@19825 1319 ;void try_default_args();
pascal@20538 1320 ;_fastcall void set_cmdline(const char *filename);
pascal@19825 1321 ;***************************************************************
pascal@20528 1322 ifdef EXTRA
pascal@20528 1323
pascal@19825 1324 global _try_default_args:near
pascal@19825 1325 proc _try_default_args near
pascal@19825 1326
pascal@19825 1327 mov bx,offset tazboot_cmd
pascal@19825 1328 call open
pascal@19825 1329 jc kver2ulret
pascal@19825 1330 mov cx,4096
pascal@19825 1331 mov di,[_heap_top]
pascal@19825 1332 extrn read_cmdline:near
pascal@19825 1333 jmp near read_cmdline ; read_cmdline(ax,di,cx)
pascal@19825 1334
pascal@19825 1335 endp _try_default_args
pascal@19825 1336
pascal@20528 1337 endif
pascal@19825 1338
pascal@19515 1339 ends _TEXT
pascal@19515 1340
pascal@19515 1341 end
pascal@19515 1342
pascal@19515 1343 ;###### END OF FILE ############################################
pascal@19825 1344