Hi...
On Sun, Jul 15, 2012 at 9:28 AM, 王哲 <wangzhe5004@xxxxxxxxx> 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
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