forked from KolibriOS/kolibrios
173 lines
3.9 KiB
PHP
173 lines
3.9 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Copyright (C) KolibriOS team 2011-2015. All rights reserved. ;;
|
|
;; Distributed under terms of the GNU General Public License ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
$Revision$
|
|
|
|
; All parsers are called with ds:si -> value of the variable,
|
|
; possibly with spaces before, and dx = limit of config file.
|
|
|
|
; Three subroutines parse_char, parse_number and parse_bool set CF
|
|
; if something has failed, otherwise return the value in al/ax.
|
|
|
|
parse_timeout:
|
|
; timeout is a number not greater than 9
|
|
call parse_number
|
|
jc .nothing
|
|
cmp ax, 9
|
|
jbe @f
|
|
mov ax, 9
|
|
@@:
|
|
imul ax, 18
|
|
mov [es:preboot_timeout], ax
|
|
.nothing:
|
|
ret
|
|
|
|
parse_resolution:
|
|
; resolution is <width>*<height>, 'x' can be used instead of '*'
|
|
; parse width
|
|
call parse_number
|
|
jc .nothing
|
|
; save width
|
|
xchg ax, bx
|
|
; test for 'x' or '*'
|
|
call parse_char
|
|
cmp al, 'x'
|
|
jz @f
|
|
cmp al, '*'
|
|
jnz .nothing
|
|
@@:
|
|
; parse height
|
|
call parse_number
|
|
jc .nothing
|
|
; write width and height
|
|
mov [es:x_save], bx
|
|
mov [es:y_save], ax
|
|
.nothing:
|
|
ret
|
|
|
|
parse_vbemode:
|
|
; vbemode is a number
|
|
call parse_number
|
|
jc .nothing
|
|
mov [es:number_vm], ax
|
|
.nothing:
|
|
ret
|
|
|
|
parse_biosdisks:
|
|
; using biosdisks is a boolean setting
|
|
call parse_bool
|
|
jc .nothing
|
|
; convert 0 to 2, 1 to 1
|
|
inc ax
|
|
xor al, 3
|
|
mov [es:preboot_biosdisk], al
|
|
.nothing:
|
|
ret
|
|
|
|
parse_imgfrom:
|
|
; boot device (1-floppy 2-kolibri.img using primary loader, 3-don't use ramdisk)
|
|
call parse_number
|
|
jc .nothing
|
|
cmp al, 1
|
|
jb .nothing
|
|
cmp al, 3
|
|
ja .nothing
|
|
mov [es:preboot_device], al
|
|
.nothing:
|
|
ret
|
|
|
|
parse_syspath:
|
|
; everything except spaces
|
|
mov bx, preboot_syspath
|
|
.next_char:
|
|
call parse_char
|
|
jc .done
|
|
mov [es:bx], al
|
|
inc bx
|
|
jmp .next_char
|
|
.done:
|
|
mov byte[es:bx], 0 ; terminator
|
|
ret
|
|
|
|
parse_char:
|
|
; skip spaces and return the next character or CF if EOF.
|
|
cmp si, dx
|
|
jae .eof
|
|
lodsb
|
|
cmp al, ' '
|
|
jbe parse_char
|
|
ret
|
|
.eof:
|
|
stc
|
|
ret
|
|
|
|
parse_number:
|
|
; initialize high part of ax to zero
|
|
xor ax, ax
|
|
; skip spaces
|
|
call parse_char
|
|
jc .bad
|
|
; al should be a digit
|
|
sub al, '0'
|
|
cmp al, 9
|
|
ja .bad
|
|
; accumulate the value in cx
|
|
xchg cx, ax
|
|
@@:
|
|
cmp si, dx
|
|
jae .eof
|
|
lodsb
|
|
sub al, '0'
|
|
cmp al, 9
|
|
ja .end
|
|
imul cx, 10
|
|
add cx, ax
|
|
jmp @b
|
|
; if the end is caused by non-digit, unwind the last character
|
|
.end:
|
|
dec si
|
|
.eof:
|
|
xchg cx, ax
|
|
clc
|
|
ret
|
|
.bad:
|
|
stc
|
|
ret
|
|
|
|
parse_bool:
|
|
; skip spaces
|
|
call parse_char
|
|
jc .bad
|
|
; Boolean false can be represented as 0=no=off,
|
|
; boolean true can be represented as 1=yes=on.
|
|
cmp al, '0'
|
|
jz .false
|
|
cmp al, '1'
|
|
jz .true
|
|
mov ah, al
|
|
cmp si, dx
|
|
jae .bad
|
|
lodsb
|
|
cmp ax, 'n'*256 + 'o'
|
|
jz .false
|
|
cmp ax, 'o'*256 + 'f'
|
|
jz .false
|
|
cmp ax, 'y'*256 + 'e'
|
|
jz .true
|
|
cmp ax, 'o'*256 + 'n'
|
|
jz .true
|
|
.bad:
|
|
stc
|
|
ret
|
|
.true:
|
|
xor ax, ax
|
|
inc ax
|
|
ret
|
|
.false:
|
|
xor ax, ax
|
|
ret
|