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#ifndef INCLUDE_DLL_H

#define INCLUDE_DLL_H

#print "[include ]\n"

#ifndef INCLUDE_FILESYSTEM_H

#include "../lib/fs.h"

#endif

#ifdef LANG_RUS

	#define _TEXT_ERROR_ADD "'Žè¨¡ª  ¯à¨ § £à㧪¥ ¡¨¡«¨®â¥ª¨\n"

#elif LANG_EST

	#define _TEXT_ERROR_ADD "'Viga teegi laadimisel\n"

#else

	#define _TEXT_ERROR_ADD "'Error while loading library\n"

#endif

char a_libdir[43]  = "/sys/lib/\0";

// stdcall with 1 parameter

:void dll_Load() {

asm {

        push    ebp

        mov     ebp, esp

        mov     esi, SSDWORD[EBP+8]

		@next_lib:

        mov     edx, DSDWORD[ESI]

        or      edx, edx

        jz      exit

        push    esi

        mov     esi, DSDWORD[ESI+4]

        mov     edi, #a_libdir+9

@loc01:

        lodsb

        stosb

        or      al, al

        jnz     loc01

        mov     eax, 68

        mov     ebx, 19

        mov     ecx, #a_libdir

        int     0x40

        or      eax, eax

        jz      fail

        push    edx

        push    eax

        call    dll_Link

        push    eax

        mov     eax, DSDWORD[eax]

        cmp     DSDWORD[EAX], '_bil'    // somehow this needs to be reversed..

        pop     eax

        jnz     loc02

        push    DSDWORD[EAX+4]

        call    dll_Init

@loc02:

        pop     esi

        add     esi, 8

        jmp     next_lib

@exit:

	xor     eax, eax

        leave

        ret     4

@fail:

        add     esp, 4

        xor     eax, eax

        inc     eax

        leave

        ret     4

    }

}

//stdcall with 2 parameters

:void dll_Link() {

asm {

        push    ebp

        mov     ebp, esp

        push    eax

        mov     esi, SSDWORD[EBP+12]

        test    esi, esi

        jz      done

@next:

        lodsd

        test    eax, eax

        jz      done

        push    eax

        push    SSDWORD[EBP+8]

        call    dll_GetProcAddress

        or      eax, eax

        jz      loc03

        mov     DSDWORD[esi-4], eax

        jmp     next

@loc03:

        mov     SSDWORD[esp], 0

@done:

        pop     eax

        leave

        ret     8

    }

}

//stdcall with 1 parameter

:void dll_Init() {

asm {

        push    ebp

        mov     ebp, esp

        pushad

        mov     eax, #malloc

        mov     ebx, #free;

        mov     ecx, #realloc;

        mov     edx, #dll_Load;

        call    SSDWORD[EBP+8]

        popad

        leave

        ret     4

    }

}

// stdcall with 2 parameters

:void dll_GetProcAddress(){

asm {

        push    ebp

        mov     ebp, esp

        mov     edx, CSDWORD[EBP+8]

        xor     eax, eax

@next:

        or      edx, edx

        jz      end

        cmp     CSDWORD[edx], 0

        jz      end

        push    CSDWORD[EBP+12]

        push    CSDWORD[EDX]

        call    dll_StrCmp

        test    eax, eax

        jz      ok

        add     edx, 8

        jmp     next

@ok:

        mov     eax, DSDWORD[EDX+4]

@end:

        leave

        ret     8

    }

}

// stdcall with 2 parameters

:void dll_StrCmp() {

asm {

        push    ebp

        mov     ebp, esp

        push    esi

        push    edi

        mov     esi, CSDWORD[EBP+8]

        mov     edi, CSDWORD[EBP+12]

        xor     eax, eax

@label1:

        lodsb

        scasb

        jne     fail

        or      al, al

        jnz     label1

        jmp     label_ok

@fail:

        or      eax, -1

@label_ok:

        pop     edi

        pop     esi

        leave

        ret     8

    }

}

:void load_dll(dword dllname, import_table, byte need_init)

{

// load DLL

        $mov     eax, 68

        $mov     ebx, 19

        ECX=dllname;

        $int     0x40

        $test    eax, eax

        $jz      exit01

// initialize import

        $mov     edx,eax

        ESI=import_table;

@import_loop01:

        $lodsd

        $test    eax,eax

        $jz      import_done01

        $push    edx

@import_find01:

        $mov     ebx,DSDWORD[EDX]

        $test    ebx, ebx

        $jz      exit01

        $push    eax

@nex101:

        $mov     cl,DSBYTE[EAX];

        $cmp     cl,DSBYTE[EBX];

        $jnz     import_find_next01

        $test    cl,cl

        $jz      import_found01

        $inc     eax

        $inc     ebx

        $jmp     nex101

@import_find_next01:

        $pop     eax

        $add     edx, 8

        $jmp     import_find01

@import_found01:

        $pop     eax

        $mov     eax,DSDWORD[edx+4]

        $mov     DSDWORD[esi-4],eax

        $pop     edx

        $jmp     import_loop01

@import_done01:

        #ifndef NO_DLL_INIT

        IF (need_init) dll_Init (DSDWORD[EDX+4]);

        #endif

        return;

@exit01:

        error_init(dllname);

}

:inline void error_init(dword lirary_path)

{

    char error_text[1024];

    strcpy(#error_text, _TEXT_ERROR_ADD);

    strcat(#error_text, lirary_path);

    strcat(#error_text, "' -E");

    notify(#error_text);

}

#endif