[Lazarus] EpikTimer v1.0.1 released

[Michael Schnell]

On 06/06/2014 12:25 PM, Michael Van Canneyt wrote:
>
>
> if you do a vDSO implementation, please do not limit the 
> implementation to the clock_gettime, but implement all calls that 
> support it.
>

First testing results:

On Kernel 3.1.10 (32 bit):
  -  I do find the vDSO ELF structure (always at  FFFFE000)
  -  it seems to provide "__kernel_sigreturn", "__kernel_rt_sigreturn" , 
and "__kernel_vsyscall"


On Kernel 3.2.0 64 bit, using a 32 Bit testing program:
  -  I do find the vDSO ELF structure at (e.g. at F774300, the location 
varies for any program start. This behavior is documented for vDSO)
  -  it also seems to provide "just __kernel_sigreturn", 
"__kernel_rt_sigreturn" , and "__kernel_vsyscall"

So I seem to be out of luck hoping for vDSO support for the performance 
counter or similar arch depending time-source access with 32 bit systems 
:-(

It _might_ be possible the __kernel_vsyscall could be done in a way that 
it provides arch independent timer counter access that stays in user 
mode if possible. I'll keep researching...

-Michael