On 8/14/06, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
> > The kernel places the AT_SYSINFO value on the stack of the process at > > start time! (same with the other AT_ values) > > > > glibc knows how to parse these values (and you can do it yourself as > > well, although having glibc do it is better)... > > they are there for the kernel to pass certain "key system parameters" to the program; $ LD_SHOW_AUXV=1 /bin/true AT_SYSINFO: 0x9dc400 AT_SYSINFO_EHDR: 0x9dc000 AT_HWCAP: fpu vme de pse tsc msr mce cx8 mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe AT_PAGESZ: 4096 AT_CLKTCK: 100 AT_PHDR: 0x8048034 AT_PHENT: 32 AT_PHNUM: 8 AT_BASE: 0x0 AT_FLAGS: 0x0 AT_ENTRY: 0x8048b30 AT_UID: 500 AT_EUID: 500 AT_GID: 500 AT_EGID: 500 AT_SECURE: 0 AT_PLATFORM: i686
Thanks a lot Arjan for your valuable inputs. I have modified the document to include some information about AT_SYSINFO. I have also removed the direct references to 0xffffe400. The modified document can be found at the same location. Manu -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
