Difference between a process stack and a CPU stack

Temporary data like as method/function arguments, return address, and local variables are stored on the process Stack, whereas on the other hand, the CPU stack consists of a collection of data words. It employs the Last In First Out (LIFO) access technique, which is the most common in most CPUs. In this article we are going to find out the detailed difference between both of these.

1.  Example of a Process Stack :

#include <stdio.h>

int main() {
   printf("Geeks for Geeks \n");
   return 0;
}

Geeks for Geeks 

Analysis : This code only prints out one line as this is only limited to a process, which gets terminated after its completion. 

2. Example of a CPU Stack :

#include <stdio.h>
int GeeksforGeeks(int parameter1, char parameter2)
{
    int local1 = 9;
    char local2 = 'Z';
    return 0;
}
int main(int argc, char* argv[])
{
    GeeksforGeeks(7, '9');
    return 0;
}

Output :

int main(int argc, char *argv[])
{
00401060   push        ebp
00401061   mov         ebp, esp
00401063   sub         esp, 40h
00401066   push        ebx
00401067   push        esi
00401068   push        edi
00401069   lea         edi, [ebp-40h
0040106C   mov         ecx, 10h
00401071   mov         eax, 0CCCCCCCCh
00401076   rep stos    dword ptr [edi]}

Analysis : As you can see these all are the different CPU registers which are displayed on running this, as the CPU Stack is a bigger process.

Difference between a process stack and a CPU stack :

Counting on all of the above, those were the differences, hope this article helped you in identifying them, also do note that though the two may sound somewhat similar, but the small changes make it ubiquitous.