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!
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