#ifndef INCLUDE_DLL_H
#define INCLUDE_DLL_H
#print "[include <dll.h>]\n"
#ifndef INCLUDE_FILESYSTEM_H
#include "../lib/fs.h"
#endif
#ifdef LANG_RUS
#define _TEXT_ERROR_ADD "'訡ª ¯à¨ § £à㧪¥ ¡¨¡«¨®â¥ª¨"
#elif LANG_EST
#define _TEXT_ERROR_ADD "'Viga teegi laadimisel"
#else
#define _TEXT_ERROR_ADD "'Error while loading library"
#endif
char a_libdir[43] = "/sys/lib/\0";
:inline void error_init(dword text)
{
dword TEXT_ERROR[1024];
sprintf(TEXT_ERROR, "%s `%s`' -E",_TEXT_ERROR_ADD,text);
notify(TEXT_ERROR);
}
// 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
}
}
: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;
}
:byte load_dll(dword dllname, import_table, byte need_init)
{
if (load_dll2(dllname, import_table, need_init))
{
error_init(dllname);
return false;
}
return true;
}
#endif