kolibrios-gitea/kernel/trunk/fs/fs_common.inc

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2016. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License. ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision$
fsReadCMOS:
out 70h, al
in al, 71h
xor ah, ah
shl ax, 4
shr al, 4
aad
ret
fsGetTime:
mov al, 7
call fsReadCMOS
ror eax, 8
mov al, 8
call fsReadCMOS
ror eax, 8
mov al, 9
call fsReadCMOS
add eax, 2000
ror eax, 16
push eax
xor eax, eax
call fsReadCMOS
ror eax, 8
mov al, 2
call fsReadCMOS
ror eax, 8
mov al, 4
call fsReadCMOS
ror eax, 16
push eax
mov esi, esp
add esp, 8
fsCalculateTime:
; in: esi -> data block
; out: eax = seconds since 01.01.2001
movzx eax, word [esi+6]
sub eax, 2001
jnc @f
xor eax, eax
@@:
mov edx, months
mov ebx, eax
inc eax
test eax, 3
jnz @f
add edx, 12
@@:
movzx eax, byte [esi+5]
dec eax
xor ecx, ecx
@@:
dec eax
js @f
add cl, [edx+eax]
adc ch, 0
jmp @b
@@:
mov eax, ebx ; years
mov edx, 365
mul edx
shr ebx, 2
add eax, ebx
add eax, ecx
mov bl, [esi+4]
dec eax
add eax, ebx ; days
mov dl, 24
mul edx
mov bl, [esi+2]
add eax, ebx ; hours
mov ecx, 60
mul ecx
mov bl, [esi+1]
add eax, ebx ; minutes
mul ecx
mov bl, [esi]
add eax, ebx
ret
iglobal
months db 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
months2 db 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
endg
fsTime2bdfe:
; in: eax = seconds since 01.01.2001
; edi -> data block
; out: edi = edi+8
xor edx, edx
mov ecx, 60
div ecx
mov [edi], dl
xor edx, edx
div ecx
mov [edi+1], dl
xor edx, edx
mov cl, 24
div ecx
mov [edi+2], dx
xor edx, edx
mov cx, 365
div ecx
mov ebx, eax
add ebx, 2001
shr eax, 2
sub edx, eax
jns @f
dec ebx
add edx, 365
test ebx, 3
jnz @f
inc edx
@@:
xor eax, eax
mov ecx, months-1
test ebx, 3
jnz @f
add ecx, 12
@@:
inc ecx
inc eax
sub dl, [ecx]
jnc @b
dec dh
jns @b
add dl, [ecx]
inc edx
mov [edi+4], dl
mov [edi+5], al
mov [edi+6], bx
add edi, 8
ret