Re: prime numbers

[Paul Irofti <bulibuta@gmail.com>]

Frank Kotler wrote:

> Paul Irofti wrote:
>
> ...
>
>> ok, so than what's the diffrence between:
>> a) movb $test, %al
>> b) movb test, %al
>> c) movb (test), %al
>> c) movb ($test), %al      #if this exists!
>
>
> Hmmm, I'm actually Nasmist, not an as user, but...
>
>> and how come when i access kernel ops i use $<oper>
>>
>> i.e. movl $__NR_write, %eax    #i actually append the address 1?! not 
>> put the value 1?!
>
>
> I perhaps shouldn't have said "address"... As I understand it, the '$' 
> indicates an "immediate" value. "movl $4, %eax" (or $__NR_write) moves 
> the value 4 into %eax. "movl 4, %eax" would move the contents of 
> address 0x00000004 into %eax - except that it segfaults because 
> 0x00000004 isn't in "your" address space.
>
> Maybe an actual (G)as user can clarify it better. It *is* confusing - 
> if it were easy, everybody'd be doing it! :)
>
> Best,
> Frank
>
>
thanks man!

i had the same problems with syntax and address/value access in MASM 
when i started, now, i see myself hitting the same spot in the *nix 
world of assembly:))

well, i'm blown off, it's 6am here, i need some sleep, hopefully someone 
will make my morning..eh! afternoon... sweeter with a short lesson on 
the issue!

bye!