Re: Illegal use of reserved word in system.h

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 19 May 2005, Steven Rostedt wrote:

On Thu, 2005-05-19 at 16:06 +0200, Andreas Schwab wrote:
"Richard B. Johnson" <[email protected]> writes:

Now, where is that 'auxiliary vevtor'??? I got a pointer to
something to be executed before calling exit, I have an
argument count, then a bunch of pointers (argv), terminating
with a NULL, then another bunch of pointers (envp) terminating
with a NULL.  Is there something after that??? If so, what's
the contents of this thing?

See create_elf_tables.  The aux table comes after the environment.

As I stated earlier, the page size passed in there is ELF_EXEC_PAGESIZE
which may not be the same as PAGE_SIZE.

-- Steve

It's also hard to see what is happening in 'C'. When I execute
this:

#include <stdio.h>
#include <stdlib.h>

int main(int cnt, char *argv[], char *env[], char *aux[])
{
    printf("Aux 0 = %s\n", aux[0]);
//    printf("Aux 1 = %s\n", aux[1]);
}

I get:

Aux 0 = GLIBC_2.0

The next pointer is a NULL pointer, so 'C' has dorked something.
When I play in assembler, (crt.o startup) I get a pointer that
points to:

	bffffb6c	- pointer of the stack
	00000020	- dereferenced

This shows that ld-linux.so, that got called first, didn't
preserve the vector.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.11.9 on an i686 machine (5537.79 BogoMips).
 Notice : All mail here is now cached for review by Dictator Bush.
                 98.36% of all statistics are fiction.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux