Subversion Repositories Kolibri OS

#ifndef INCLUDE_DLL_H

#define INCLUDE_DLL_H

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

:inline void error_init(dword text)

{

	dword l,ll;

	dword TEXT_ERROR = malloc(1024);

	#ifdef LANG_RUS

		strcpy(TEXT_ERROR,"'Žè¨¡ª  ¯à¨ § £à㧪¥ ¡¨¡«¨®â¥ª¨ `");

	#elif LANG_EST

		strcpy(TEXT_ERROR,"'Viga teegi laadimisel `");

	#else

		strcpy(TEXT_ERROR,"'Error while loading library `");

	#endif

	ll = strlen(TEXT_ERROR);

	strcpy(TEXT_ERROR+ll,text);

	l = strlen(text);

	strncpy(TEXT_ERROR+ll+l,"`' -E",4);

	notify(TEXT_ERROR);

	free(TEXT_ERROR);

	ExitProcess();

}

// 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, #mem_Alloc

        mov     ebx, #mem_Free;

        mov     ecx, #mem_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

    }

}

int load_dll2(dword dllname, import_table, byte need_init)

{

   //dword dllentry=0;

// 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:

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

        return 0;

@exit01:

        return -1;

		//error_init(dllname);

}

#endif