[RFC]confusion about syscall
From: Mulyadi Santosa <hidden>
Date: 2012-07-15 05:49:25
Hi... On Sun, Jul 15, 2012 at 9:28 AM, ?? [off-list ref] wrote:
and the second program:
#include <stdio.h>
#include <unistd.h>
int main(void)
{
unsigned long value = 0;
value = getpid();
return 0;
}
and disassembling it:( objdump -d a.out)
...
08048300 <getpid@plt>:
8048300: ff 25 00 a0 04 08 jmp *0x804a000
8048306: 68 00 00 00 00 push $0x0
804830b: e9 e0 ff ff ff jmp 80482f0 <_init+0x3c>Looks like jumping into vsyscall page to me... -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com