[pso] [Windows - Tema1]asm_ mov syscall, eax
Bogdan Ardeleanu
bogdanardeleanu at gmail.com
Mon Mar 27 11:17:21 EEST 2006
Scuze pentru eroarea lexicala de mai inainte, scrisesem "_mov", dar intrebarea se mentine!
----- Original Message -----
From: Adrian - Razvan Deaconescu
To: Proiectarea Sistemelor de Operare
Sent: Monday, March 27, 2006 5:47 AM
Subject: Re: [pso] [Windows - Tema1]asm_ mov syscall, eax
On 3/27/06, Bogdan Ardeleanu <bogdanardeleanu at gmail.com> wrote:
Se pare ca am ceva probleme cand folosesc aceste instructiuni...
"asm_ mov syscall, eax"
Sper ca ai scris tu gresit. Din cate stiu eu pentru inline assembly ar trebui sa folosesti instructiunea
"_asm mov syscall, eax" (underscore in fata la asm nu dupa).
syscall folosita in intercept() are valoarea 120, iar in eax apare valoarea 1 dupa intructiune a de mai sus.
Sper, de asemenea, ca iti dai seama de ordinea operanzilor folosind sintaxa Intel:
mov dest, src
In instructiunea ta vei copia valoarea din eax in syscall. Daca eax era 1 atunci ramane 1, syscall este cel care se modifica.
Ma poate ajuta cineva daca ?..Multumesc frumos!
int add_assembly (int x, int y)
{
int res;
_asm mov eax, x
_asm mov ebx, y
_asm add eax, ebx
_asm mov res, eax
return res;
}
mai sus e un exemplu de adunare a doua numere folosind inline assembly
Hope this helps,
Razvan
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