Re: how_shifting_bit

[Maciej Hrebien <m_hrebien@wp.pl>]

ssams wrote:
> 
> /* i am trying building some code with instruction 'shl'
> i have a little problem when print second char. this is my
> code
> want somebody correct it...?
> regard */
> .data
>  msg: .byte 0b111111    #char'?'
>  baris_baru: .byte 10
>  .text
>  .globl _start
>  _start:
>         mov $4, %eax    /* fungsi syscall - write */
>         mov $1, %ebx    /* file handler forstdout */
>         mov $1, %edx
>         mov $msg, %ecx
>         int $0x80       /* do syscall */
> 
>         mov $msg,%eax
>         mov $1,%cl
>         shl %cl,%eax    #eax=111 1110 = '~'
>         movzwl %ax,%ecx

xchg this two lines with:

shl %cl,(%eax)
mov %eax,%ecx

>         mov $4, %eax    /* fungsi syscall - write */
>         int $0x80
> /* after char '?' i want print '~'. No output generated
> what and where it wrong..?*/
> 
>         mov $baris_baru,%ecx
>         mov $4, %eax    /* fungsi syscall - write */
>         int $0x80
> 
>         mov $1,%eax
>         int $0x80
> can anybody explain me please..?
> regard.

-- 
Maciej Hrebien