Re: Unable to use a variable in instruction

[Robert Plantz <plantz@xxxxxxxxxx>]

On Sun, 2007-10-14 at 19:37 -0400, A D wrote:
> I'm having strange problem accessing a variable in a gnu assembly language program.
> When i write a code:
> 
> .section .data
>    x = 4

This is equivalent to writing
        .equ  x,4

> mm:
>    .int 1, 2
> 
> .section .text
> .globl _start
> _start:
>    nop

So this instruction:
>    movl x, %ecx   #can't do this 

is trying to move the 4 bytes stored at memory location 4 into the ecx
register. As the OS told you, you cannot do that.

The way to allocate an initialized 32-bit int in the .data section is:

x:     .long  4


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