modules/ver.asm

   1 ; ****************************************************************************
   2 ;
   3 ;  ver.asm
   4 ;
   5 ;  A COMBOOT/DOS COM program to display the version of the system
   6 ; (Syslinux, DOS, or DRMK)
   7 ;
   8 ;   Copyright (C) 2009-2010  Gene Cumm
   9 ;
  10 ;  This program is free software; you can redistribute it and/or modify
  11 ;  it under the terms of the GNU General Public License as published by
  12 ;  the Free Software Foundation, Inc., 53 Temple Place Ste 330,
  13 ;  Boston MA 02111-1307, USA; either version 2 of the License, or
  14 ;  (at your option) any later version; incorporated herein by reference.
  15 ;
  16 ; ****************************************************************************
  17
  18 ; %define DEBUG
  19
  20                 section .text
  21                 org     0x100
  22
  23 _start:
  24                 call crlf
  25                 mov si,info_str
  26                 call writestr
  27                 call getdosver
  28                 call chkprn_dosver
  29                 jnz .end
  30                 call chkprn_syslinux
  31                 call crlf
  32 .end:
  33 ;               pop ds
  34                 ret
  35
  36
  37 ; chkprn_syslinux
  38 chkprn_syslinux:
  39 %ifdef DEBUG
  40                 mov si,may_sysl_str
  41                 call writestr
  42 %endif
  43                 cmp eax,59530000h
  44                 jne .end
  45                 cmp ebx,4C530000h
  46                 jne .end
  47                 cmp ecx,4E490000h
  48                 jne .end
  49                 cmp edx,58550000h
  50                 jne .end
  51 .is_syslinux:
  52                 pushad
  53 %ifdef DEBUG
  54                 mov si,is_sysl_str
  55                 call writestr
  56 %endif
  57 .get_sysl_ver:
  58                 mov ax,0001h
  59                 int 22h
  60 ; AX=0001h [2.00]       Get Version
  61 ;
  62 ;       Input:  AX      0001h
  63 ;       Output: AX      number of INT 22h API functions available
  64 ;               CH      Syslinux major version number
  65 ;               CL      Syslinux minor version number
  66 ;               DL      Syslinux derivative ID (e.g. 32h = PXELINUX)
  67 ;               ES:SI   Syslinux version string
  68 ;               ES:DI   Syslinux copyright string
  69 %ifdef DEBUG
  70                 push si
  71                 push cs
  72                 pop ds
  73                 mov si,gotver_str
  74                 call writestr
  75                 pop si
  76 %endif
  77
  78 .prn_ver_str:
  79                 mov si,syslban_str
  80                 call writestr
  81                 push ds
  82                 push es
  83                 pop ds
  84                 call writestr
  85                 call crlf
  86                 pop ds
  87 .prn_var:
  88                 cmp dl,31h
  89                 je .var_sysl
  90                 cmp dl,32h
  91                 je .var_pxel
  92                 cmp dl,33h
  93                 je .var_isol
  94                 cmp dl,34h
  95                 je .var_extl
  96                 jmp .var_unk
  97 .var_sysl:
  98                 mov si,sysl_str
  99                 call writestr
 100                 jmp .prn_lnxsp
 101 .var_pxel:
 102                 mov si,pxel_str
 103                 call writestr
 104                 jmp .prn_lnxsp
 105 .var_isol:
 106                 mov si,isol_str
 107                 call writestr
 108                 jmp .prn_lnxsp
 109 .var_extl:
 110                 mov si,extl_str
 111                 call writestr
 112 ;               jmp .prn_lnxsp
 113 .prn_lnxsp:
 114                 mov si,linsp_str
 115                 call writestr
 116                 jmp .prn_ver
 117 .var_unk:
 118                 mov si,unkvar_str
 119                 call writestr
 120 .prn_ver:
 121 %ifdef DEBUG
 122                 push si
 123                 push cs
 124                 pop ds
 125                 mov si,prn_ver_str
 126                 call writestr
 127                 pop si
 128 %endif
 129 .prn_ver_maj:
 130                 mov al,ch
 131                 call writedecb
 132                 mov dl,'.'
 133                 call writechr_dl
 134 .prn_ver_min:
 135                 mov al,cl
 136 ;               cmp al,10
 137 ;               jae .min_wri
 138 ;               mov al,'0'
 139 ;               call writechr
 140 ;               mov al,cl
 141 ; .min_wri:
 142 ;               call writedecb
 143                 call writedecb2
 144
 145 .end_prn:
 146                 popad
 147 .end:
 148                 ret
 149
 150 ; chkprn_dosver Check and print DOS version;
 151 ;       Input   Data from INT21 AH=30h
 152 ;       AH      Major version of DOS or 0
 153 ;       AL      Minor Version
 154 ;       BH      DOS type
 155 ;       BL:CX   24-bit OEM serial number
 156 ;       Return
 157 ;       ZF      Unset if DOS, Set if not DOS (AX=0)
 158 chkprn_dosver:
 159                 and ax,ax       ; cmp ax,0
 160                 jz .end
 161 .is_dos:
 162                 push eax
 163                 push edx
 164                 push si
 165 %ifdef DEBUG
 166                 mov si,is_dos_str
 167                 call writestr
 168                 call crlf
 169                 call prnreg_gp_l
 170                 call crlf
 171 %endif
 172 .var_prn:
 173                 cmp bh,0
 174                 je .var_pcdos
 175                 cmp bh,0FFh
 176                 je .var_msdos
 177                 cmp bh,0FDh
 178                 je .var_freedos
 179                 cmp bh,0DEh
 180                 je .var_drmk
 181                 jmp .var_unk
 182 .var_pcdos:
 183                 mov si,pcdos_str
 184                 call writestr
 185                 jmp .var_end
 186 .var_msdos:
 187                 mov si,msdos_str
 188                 call writestr
 189                 jmp .var_end
 190 .var_freedos:
 191                 mov si,freedos_str
 192                 call writestr
 193                 jmp .var_end
 194 .var_drmk:
 195                 mov si,drmk_str
 196                 call writestr
 197                 jmp .var_end
 198 .var_unk:
 199                 mov si,unkdos_str
 200                 call writestr
 201                 mov si,spparen_str
 202                 call writestr
 203                 push eax
 204                 mov al,bh
 205                 call writehex2
 206                 pop eax
 207                 mov si,parensp_str
 208                 call writestr
 209 ;               jmp .var_end
 210 .var_end:
 211                 call prn_dosver_num
 212                 call crlf
 213 .subver:
 214                 pop si
 215                 pop edx
 216                 pop eax
 217                 cmp bh,0FFh
 218                 je .msdos_ver
 219                 cmp bh,0DEh
 220                 jne .end_ver
 221 .drmk_ver:
 222                 call getprn_drmkver
 223 ;               jmp .end_ver            ; DRMK returns Extended/True DOS
 224 .msdos_ver:
 225                 cmp al,5
 226                 jb .end_ver
 227                 call getprn_msdosver
 228 .end_ver:
 229                 and ax,ax               ; Unset ZF
 230 .end:
 231                 ret
 232
 233 ; prn_dosver_num        Print the numerical DOS version
 234 ;       Input   Data from INT21 AH=30h
 235 ;       AH      Major version of DOS or 0
 236 ;       AL      Minor Version
 237 ;       BH      DOS type
 238 ;       BL:CX   24-bit OEM serial number
 239 prn_dosver_num:
 240                 push eax
 241                 push edx
 242                 push si
 243                 pushfd
 244 .vmaj_prn:
 245                 call writedecb
 246 ;               call writehex2
 247                 mov dl,'.'
 248                 call writechr_dl
 249 .vmin_prn:
 250                 mov al,ah
 251                 call writedecb
 252 ;               call writehex2
 253 .serial:        ; Skip if 0
 254                 cmp bl,0
 255                 jne .ser_start
 256                 cmp cx,0
 257                 je .end
 258 .ser_start:
 259                 mov si,spparen_str
 260                 call writestr
 261                 mov si,zerox_str
 262                 call writestr
 263 .ser_bl:
 264                 mov al,bl
 265                 call writehex2
 266 .ser_cx:
 267                 mov ax,cx
 268                 call writehex4
 269 .serial_end:
 270                 mov si,parensp_str
 271                 call writestr
 272 .end:
 273                 popfd
 274                 pop si
 275                 pop edx
 276                 pop eax
 277                 ret
 278
 279 ; getdosver     Get the DOS version
 280 ;       Return  Version or 0 + SYSLINUX message
 281 ;       EAX     Part 1
 282 ;       EBX     Part 2
 283 ;       ECX     Part 3
 284 ;       EDX     Part 4
 285 getdosver:
 286                 mov ecx,0
 287                 mov edx,0
 288                 mov ebx,0
 289                 mov eax,3000h
 290                 int 21h
 291                 ret
 292
 293 ; getmsdosver   Get the Extended MS-DOS version
 294 ;       Returns Version
 295 ;       EAX     Part 1
 296 ;       EBX     Part 2
 297 ;       ECX     Part 3
 298 ;       EDX     Part 4
 299 getmsdosver:
 300                 mov ecx,0
 301                 mov edx,0
 302                 mov ebx,0
 303                 mov eax,3306h
 304                 int 21h
 305                 ret
 306
 307 ; getprn_msdosver
 308 getprn_msdosver:
 309                 pushad
 310                 pushfd
 311                 call getmsdosver
 312 %ifdef DEBUG
 313                 call prnreg_gp_l
 314                 call crlf
 315 %endif
 316                 mov si,dosext_str
 317                 call writestr
 318                 mov eax,ebx
 319                 mov ebx,0
 320                 mov ecx,edx
 321                 call prn_dosver_num
 322 .end:
 323                 popfd
 324                 popad
 325                 ret
 326
 327 ; getdrmkver:   Get the DRMK-specifc OS version
 328 ;       Returns Version
 329 ;       AX      OS Version
 330 ;       DX      Patch Version
 331 getdrmkver:
 332                 mov ax,4452h
 333                 int 21h
 334                 ret
 335
 336 ; getdrmkver:   Get the DRMK-specifc Kernel build info
 337 ;       Returns Kernel build info
 338 ;       AX      Kernel build date in DOS 16-bit format
 339 ;       [ES:BX] Kernel private data
 340 getdrmkbld:
 341                 mov ax,4458h
 342                 int 21h
 343                 ret
 344
 345 ; getprn_drmkver: Get/Print DRMK-specific Version info
 346 getprn_drmkver:
 347                 pushad
 348                 pushfd
 349 .getver:
 350                 call getdrmkver
 351 .prnosver:      ; "OS Version"
 352                 mov si,osver_str
 353                 call writestr
 354                 mov si,zerox_str
 355                 call writestr
 356 ;               mov ax,0
 357                 call writehex4
 358                 call crlf
 359 .prnpatchver:   ; "Patch Version"
 360                 mov si,patchver_str
 361                 call writestr
 362                 mov si,zerox_str
 363                 call writestr
 364                 mov ax,dx
 365                 call writehex4
 366                 call crlf
 367 .getbld:
 368                 call getdrmkbld
 369 .prnkernbld:    ; "Kernel Build Date"
 370                 mov si,kernbld_str
 371                 call writestr
 372                 call writedate_ax
 373                 call crlf
 374 .prnkernprvaddr:
 375                 mov si,prvdat_str
 376                 call writestr
 377                 mov ax,es
 378                 call writehex4
 379                 mov dl,':'
 380                 call writechr_dl
 381                 mov ax,bx
 382                 call writehex4
 383                 call crlf
 384 %ifdef DEBUG
 385 .prnkernprv:
 386                 mov di,[es:bx]
 387                 mov ax,di
 388                 call writehex4
 389                 call crlf
 390                 mov si,2
 391                 mov cx,8
 392 .prnkernprv2:
 393                 push cx
 394                 mov cx,8
 395 .prnkernprv1:
 396                 mov eax,[es:bx+si]
 397                 call writehex8
 398                 cmp cx,1
 399                 jbe .prnkern0dash
 400                 mov ax,'-'
 401                 call writechr
 402 .prnkern0dash:
 403                 add si,4
 404                 sub di,4
 405                 cmp di,0
 406                 jbe .prnkernprvend
 407                 loop .prnkernprv1
 408                 call crlf
 409                 pop cx
 410                 loop .prnkernprv2
 411                 jmp .end
 412 .prnkernprvend:
 413                 pop cx
 414 %endif
 415 .end:
 416                 popfd
 417                 popad
 418                 ret
 419
 420 ;writedate_ax   Write a date in AX in ISO8601 big endian format
 421 ;       Input
 422 ;       AX      Date in 16-bit DOS format
 423 ; 2006-01-11
 424 ; 0011010 0001 01011
 425 writedate_ax:
 426                 pushad
 427                 pushfd
 428                 mov dx,ax
 429 %ifdef DEBUG
 430                 call writehex4
 431                 call crlf
 432 %endif
 433 .year:
 434                 shr ax,9
 435                 add ax,1980
 436                 call writedecw
 437                 mov al,'-'
 438                 call writechr
 439                 mov ax,dx
 440 .month:
 441                 shr ax,5
 442                 and ax,0Fh
 443 ;               cmp ax,10
 444 ;               jae .month_wri
 445 ;               mov cx,ax
 446 ;               mov ax,'0'
 447 ;               call writechr
 448 ;               mov ax,cx
 449 ; .month_wri:
 450 ;               call writedecb
 451                 call writedecb2
 452                 mov al,'-'
 453                 call writechr
 454                 mov ax,dx
 455 .day:
 456                 and ax,1Fh
 457 ;               cmp ax,10
 458 ;               jae .day_wri
 459 ;               mov cx,ax
 460 ;               mov ax,'0'
 461 ;               call writechr
 462 ;               mov ax,cx
 463 ; .day_wri:
 464 ;               call writedecb
 465                 call writedecb2
 466 .end:
 467                 popfd
 468                 popad
 469                 ret
 470
 471 ; writechr_dl   Write a character to the console saving AX
 472 ;       Input
 473 ;       DL      character to write
 474 writechr_dl:
 475                 push ax
 476                 mov ah,02h
 477                 int 21h
 478 .end:
 479                 pop ax
 480                 ret
 481
 482 ; writechr_al   Write a character to the console saving AX
 483 ;       Input
 484 ;       AL      character to write
 485 writechr:
 486 writechr_al:
 487                 push dx
 488                 mov dl,al
 489                 call writechr_dl
 490 .end:           pop dx
 491                 ret
 492
 493 ; writedecb[23] Print byte as fixed width
 494 ;       Input
 495 ;       AL      number to write
 496 writedecb3:
 497                 pushfd
 498                 cmp al,100
 499                 jae .skip
 500                 push ax
 501                 mov ax,'0'
 502                 call writechr
 503                 pop ax
 504 .skip:          popfd
 505 writedecb2:
 506                 pushfd
 507                 cmp al,10
 508                 jae .skip
 509                 push ax
 510                 mov ax,'0'
 511                 call writechr
 512                 pop ax
 513 .skip:          popfd
 514                 call writedecb
 515                 ret
 516
 517
 518 ; prnreg_gp_l   Dump GP registers (Long)
 519 prnreg_gp_l:
 520                 push eax
 521                 push si
 522                 call crlf
 523                 mov si,sp2_str
 524                 call writestr
 525                 mov si,eax_str
 526                 call writestr
 527                 call writehex8
 528                 mov si,sp2_str
 529                 call writestr
 530                 mov si,ecx_str
 531                 call writestr
 532                 mov eax,ecx
 533                 call writehex8
 534                 mov si,sp2_str
 535                 call writestr
 536                 mov si,edx_str
 537                 call writestr
 538                 mov eax,edx
 539                 call writehex8
 540                 mov si,sp2_str
 541                 call writestr
 542                 mov si,ebx_str
 543                 call writestr
 544                 mov eax,ebx
 545                 call writehex8
 546                 call crlf
 547                 pop si
 548                 pop eax
 549 .end:
 550                 ret
 551
 552 ; is_zf
 553 is_zf:
 554                 push si
 555                 jz .true
 556 .false:
 557                 mov si,zero_not_str
 558                 call writestr
 559                 jmp .end
 560 .true:
 561                 mov si,zero_is_str
 562                 call writestr
 563 .end:
 564                 pop si
 565                 ret
 566
 567 %include "../core/macros.inc"           ; CR/LF
 568 %include "../core/writestr.inc"         ; String output
 569 %include "../core/writehex.inc"         ; Hexadecimal output
 570 %include "../core/writedec.inc"         ; Decimal output
 571
 572                 section .data
 573 info_str        db 'Ver.com b026', CR, LF, 0
 574 is_dos_str      db 'Found DOS', CR, LF, 0
 575 is_sysl_str     db 'Found a Syslinux variant', CR, LF, 0
 576 is_drmk_str     db 'Found DRMK', CR, LF, 0
 577 may_sysl_str    db 'Maybe Syslinux variant', CR, LF, 0
 578 gotver_str      db 'Got the version back', CR, LF, 0
 579 prn_ver_str     db 'Printing version number', CR, LF, 0
 580 syslban_str     db 'Syslinux banner: ',0
 581 sysl_str        db 'SYS', 0
 582 pxel_str        db 'PXE', 0
 583 isol_str        db 'ISO', 0
 584 extl_str        db 'EXT', 0
 585 linsp_str       db 'LINUX ', 0
 586 unkvar_str      db 'Unkown-Variant ', 0
 587 pcdos_str       db 'PC-DOS ', 0
 588 msdos_str       db 'MS-DOS ', 0
 589 freedos_str     db 'FreeDOS ', 0
 590 unkdos_str      db 'Unknown-DOS ', 0
 591 drmk_str        db 'DRMK ', 0
 592 dosext_str      db '  Extended DOS version: ', 0
 593 osver_str       db '  OS Version: ', 0
 594 patchver_str    db '  Patch Version: ', 0
 595 kernbld_str     db '  Kernel Build Date: ', 0
 596 prvdat_str      db '  Private Data Ptr: ', 0
 597 spparen_str     db ' (', 0
 598 zerox_str       db '0x', 0
 599 parensp_str     db ') ', 0
 600 eax_str         db 'EAX=', 0
 601 ebx_str         db 'EBX=', 0
 602 ecx_str         db 'ECX=', 0
 603 edx_str         db 'EDX=', 0
 604 sp2_str         db '  ', 0
 605 zero_not_str    db ' NOT_Zero ',0
 606 zero_is_str     db ' IS_Zero ',0