Re: [Dev-C++] gas again

[Per W. <pw...@ia...>]

I have no experience with gas, but are you clearing your stack
arguments (addl $xx,%esp) correctly. In my eyes, you seem to pop too much
data. You should only remove as much data as you have pushed on the
stack.

One other thing. You might bunch together a lot of calls before finally
clearing the stack, i.e. you don't have to remove the arguments between
each function call.

/Per W

On Sun, 9 Mar 2003, Carlos Garc=EDa del Monte wrote:

>   Well, I'll need to work it out from zero myself (but after learning
> NASM). I want only one question I cannot solve, and if it gets assembled
> without errors I don't know if it because it is done right or not, in
> fact I get run-time errors.
> It's about variable declaration and initialization:
>
> The current code which is assembled but doesn't run is:
>
> .data
> mensaje1: .ascii "Introduzca un n=FAmero\n\0"
> mensaje2: .ascii "El doble es: \0"
> string: .ascii "%d\n\0"
> numer: .long 200
>
> .bss
> .comm entero, 4
>
>
> .text
> .global _asm_main
> .extern _printf
> .extern scanf
> _asm_main:
> enter    $0, $0
> pusha
>
> movl    (mensaje1),    %eax
> push    %eax
> call    _printf
> addl    $12,    %esp
>
> movl    numer,    %eax
> push    %eax
> push    (string)
> call    _printf
> addl    $16,    %esp
>
> push    (entero)
> push    (string)
> call    _scanf
> movl    %eax,    (entero)
> addl    $16,    %esp
>
> movl    entero,    %eax
> addl    %eax,    %eax
> movl    %eax,    %ebx
>
> movl    (mensaje2),    %eax
> push    %eax
> call    _printf
> addl    $12,    %esp
>
> movl    %ebx,    %eax
> push    %eax
> push    (string)
> call    _printf
> addl    $16, %ebp
>
> popa
> movl    $0,    %eax
> leave
> ret
>
> Can someone make these pieces of code be correctly written? If so many
> thanks, if not, thanks anyway.
> Have a nice day, all of you.
>
>
>
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