Question

I am trying to run a function on a separately allocated stack.

I want to keep the stack for later so I can restore it and resume the function.

The following code compiles and runs, but nothing prints to the screen.

#include <cstdlib>
#include <csetjmp>
#include <iostream>
using namespace std;

unsigned char stack[65535];
unsigned char *base_ptr = stack + 65535 - 1;

unsigned char *old_stack;
unsigned char *old_base;

void function()
{
    cout << "hello world" << endl;
}

int main()
{
    __asm
    {
        mov old_base, ebp
        mov old_stack, esp

        mov ebp, base_ptr
        mov esp, base_ptr

        call function

        mov ebp, old_base
        mov esp, old_stack
    }
}

using vs2012/win8/intel Q9650

Answer 1

Actually I don’t see any problem with your code.
Your sample taken as-is compiles, links and runs as expected.

Perhaps your problem with console settings, or some global STL/CRT initialization or whatever. Anyway, you may put a breakpoint inside your function to ensure you’re getting there.