replacement of talloc

[ronnie sahlberg]

Well,

memset() is not a solution. That is like saying that "I will use
printf() as a substitute for malloc()." It makes no sense.

If your embedded platform does not yet provide you with a basic libc
and malloc()/free() you just have to write them yourself
just like people in embedded systems have had to for ages.
And hook initialization of it into crt0.s

A simple malloc()/free() implementation should not take more than a
few hours/a day to write for a new embedded architecture.


regards
ronnie sahlberg

On Sun, Jul 22, 2012 at 8:27 PM, akib sayyed <mailing.akib at gmail.com> wrote:
>
> so whats the solution??
> if i need to implement malloc manually for arm7 how can i do that??
> any help or hint will be great
>
> On Sun, Jul 22, 2012 at 3:51 PM, ronnie sahlberg <ronniesahlberg at gmail.com>
> wrote:
>>
>> You can not substitute malloc() with memset()
>> they serve completely different purposes.
>>
>>
>> On Sun, Jul 22, 2012 at 8:17 PM, akib sayyed <mailing.akib at gmail.com>
>> wrote:
>> > didnt get you
>> > here is talloc code that has been use.
>> > i can use memset like this memset(atr,0,sizeof(atr)); in firmware
>> > so in above code if i replace complete malloc with memset will it work??
>> >
>> > On Fri, Jul 20, 2012 at 1:48 AM, Alexander Bokovoy <ab at samba.org> wrote:
>> >
>> >> On Thu, Jul 19, 2012 at 7:48 PM, akib sayyed <mailing.akib at gmail.com>
>> >> wrote:
>> >> > i am compiling using gnutoolchain  to compile my code. and error is
>> >> > not
>> >> > while compiling its while linking
>> >> So it has missing symbols, most likely in form of malloc and free.
>> >>
>> >> Your setup is basically a single statically linked program. You would
>> >> need to implement memory management on your own. This is actually
>> >> easier to be done with talloc as you can simply use a single talloc
>> >> pool internally that hands out memory out of a single raw memory
>> >> chunk. Since talloc already hides malloc use from the original program
>> >> you would need to rewrite few places within talloc where memory is
>> >> allocated.
>> >>
>> >> > On Thu, Jul 19, 2012 at 9:55 PM, Alexander Bokovoy <ab at samba.org>
>> >> > wrote:
>> >> >>
>> >> >> On Thu, Jul 19, 2012 at 7:21 PM, akib sayyed
>> >> >> <mailing.akib at gmail.com>
>> >> >> wrote:
>> >> >> > yes it does run calypso but only some part is ran on actual
>> >> >> > calypso
>> >> and
>> >> >> > actual main part in ran on pc
>> >> >> > in other words layer 1 is ran on calypso and l2 l3 are on host pc.
>> >> >> > i want to port l2 l3 on calypso
>> >> >> I don't think you'll get any success in 256KiB of memory there. But
>> >> >> good
>> >> >> luck.
>> >> >> Is there any specific error when compiling talloc?
>> >>
>> >>
>> >> --
>> >> / Alexander Bokovoy
>> >>
>
>