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Rewrote dll_load function and its subfunctions for c--.

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git-svn-id: svn://kolibrios.org@4567 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2014-02-09 19:10:04 +00:00
parent 9443bf38d2
commit ef154816ce
1 changed files with 154 additions and 111 deletions
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251
programs/cmm/lib/dll.h
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@ -1,125 +1,168 @@
//Asper
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
//proc dll.Load, import_table:dword
int dll_Load(dword import_table)
{
$mov esi, import_table
@next_lib: $mov edx, DSDWORD[esi]
$or edx,edx
$jz exit_
$push esi
$mov esi,DSDWORD[esi+4]
$mov edi,#a_libdir
@loc01:
lodsb
stosb
or al, al
jnz loc01
$push edi
$push esi
EAX=strlen(#a_libdir);
$pop esi
$pop edi
$add edi, eax //9
mov eax, 68
mov ebx, 19
mov ecx, #a_libdir
int 0x40
or eax, eax
jz fail
@loc01: $lodsb
$stosb
$or al,al
$jnz loc01
push edx
push eax
call dll_Link
//IntToStr(EBX);
//$push edx
//WriteDebug(#a_libdir);
//$pop edx
//mcall 68,19,a_libdir
$mov eax, 68
$mov ebx, 19
$mov ecx,#a_libdir
$int 0x40
push eax
mov eax, DSDWORD[eax]
cmp DSDWORD[EAX], '_bil' // somehow this needs to be reversed..
pop eax
jnz loc02
$or eax,eax
$jz fail
//stdcall dll.Link,eax,edx
dll_Link(EAX, EDX);
$push eax
$mov eax, DSDWORD [eax]
$cmp DSDWORD [eax], 'lib_'
$pop eax
//$jnz loc02
//IntToStr(EBX);
//$push eax
//WriteDebug(DSDWORD[EAX]);
//$pop eax
//stdcall dll.Init,[eax+4]
//dll_Init(DSDWORD[EAX]); //dll_Init(DSDWORD[EAX+4]);
push DSDWORD[EAX+4]
call dll_Init
@loc02:
$pop esi
$add esi,8
$jmp next_lib
@exit_: $xor eax,eax
return 0;
@fail: $add esp,4
$xor eax,eax
$inc eax
return -1;
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
}
}
//proc dll.Link, exp:dword,imp:dword
void dll_Link(dword exp, imp)
{
$push eax
$mov esi, imp
$test esi, esi
$jz done
@next: $lodsd
$test eax,eax
$jz done
//stdcall dll.GetProcAddress,[exp],eax
dll_GetProcAddress(exp,EAX);
$or eax,eax
$jz loc03
$mov DSDWORD[esi-4],eax
$jmp next
//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 DSDWORD[esp],0
@done: $pop eax
mov SSDWORD[esp], 0
@done:
pop eax
leave
ret 8
}
}
//proc dll.Init, dllentry:dword
void dll_Init(dword dllentry)
{
$pushad
EAX=#mem_Alloc;
EBX=#mem_Free;
ECX=#mem_ReAlloc;
EDX=#dll_Load;
DSDWORD [dllentry+4] stdcall ();
$popad
//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
}
}
//proc dll.GetProcAddress, exp:dword,sz_name:dword
dword dll_GetProcAddress(dword exp, sz_name)
{
$push esi
$mov edx, exp
$xor eax,eax
@next: $or edx,edx
$jz end_
$cmp edx,0
$jz end_
strcmp(DSDWORD[EDX],sz_name);
$test eax,eax
$jz ok
$add edx,8
$jmp next
// 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_:
$pop esi
return EAX;
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;
@ -166,7 +209,7 @@ int load_dll2(dword dllname, import_table, byte need_init)
$jmp import_loop01
@import_done01:
IF (need_init) dll_Init(EDX);
IF (need_init) dll_Init (DSDWORD[EDX+4]);
return 0;
@exit01:
return -1;