kolibrios-fun/programs/games/nsider/kolibrisys/_ksys_files_acces.asm

format COFF

section '.text' code

include '../../../proc32.inc'
public __ksys_get_filesize
public __ksys_readfile
public __ksys_rewritefile
public __ksys_appendtofile

align 4
proc __ksys_get_filesize stdcall uses ebx, filename:dword

        xor eax,eax
        mov ebx,[filename]
        mov [fileinfo.subproc],dword 5
        mov [fileinfo.offset_l],eax
        mov [fileinfo.offset_h],eax
        mov [fileinfo.size],eax
        mov [fileinfo.data],dword buffer_for_info
        mov [fileinfo.letter],al
        mov [fileinfo.filename],ebx

        mov eax,70
        mov ebx,fileinfo
        int 0x40

        test eax,eax
        jnz error_for_file_size

          mov eax,[buffer_for_info+32] ;file size

        error_for_file_size:

        ret
endp


align 4
proc __ksys_readfile stdcall uses ebx,filename:dword,position:dword,sizeblock:dword,buffer:dword

        xor eax,eax
        mov ebx,[position]
        mov ecx,[sizeblock]
        mov edx,[buffer]
        mov [fileinfo.subproc],eax
        mov [fileinfo.offset_l],ebx
        mov [fileinfo.offset_h],eax
        mov [fileinfo.size],ecx
        mov ecx,[filename]
        mov [fileinfo.data],edx
        mov [fileinfo.letter],al
        mov [fileinfo.filename],ecx

        mov eax,70
        mov ebx,fileinfo
        int 0x40

        ret
endp

align 4
proc __ksys_rewritefile stdcall uses ebx,filename:dword,sizeblock:dword,data_write:dword

        xor eax,eax
        mov ebx,[sizeblock]
        mov ecx,[data_write]
        mov edx,[filename]
        mov [fileinfo.subproc],dword 2
        mov [fileinfo.offset_l],eax
        mov [fileinfo.offset_h],eax
        mov [fileinfo.size],ebx
        mov [fileinfo.data],ecx
        mov [fileinfo.letter],al
        mov [fileinfo.filename],edx

        mov eax,70
        mov ebx,fileinfo
        int 0x40

        ret
endp

align 4
proc __ksys_appendtofile stdcall uses ebx,filename:dword,pos:dword,sizeblock:dword,data_append:dword

        xor eax,eax
        mov ebx,[pos]
        mov ecx,[sizeblock]
        mov edx,[data_append]
        mov [fileinfo.subproc],dword 3
        mov [fileinfo.offset_l],ebx
        mov [fileinfo.offset_h],eax
        mov [fileinfo.size],ecx
        mov ecx,[filename]
        mov [fileinfo.data],edx
        mov [fileinfo.letter],al
        mov [fileinfo.filename],ecx

        mov eax,70
        mov ebx,fileinfo
        int 0x40

        ret
endp

struc FILEIO
{
 .subproc          rd 1
 .offset_l         rd 1
 .offset_h         rd 1
 .size             rd 1
 .data             rd 1
 .letter           rb 1
 .filename         rd 1
}

fileinfo           FILEIO
buffer_for_info    rd 11