[Developer] what does L4_Copy_regs_to_mrs() actually return?

[Iyad Q]

It seems this message did not make the transition to new mailing list, so here is the question again.

Cheers,
Iyad

----- Original Message ----
From: Iyad Q <ikq2754 at yahoo.com>
To: kenge-users at ertos.nicta.com.au
Sent: Friday, April 20, 2007 6:40:48 PM
Subject: what does L4_Copy_regs_to_mrs() actually return?

Hi,

I am trying to work on user thread debugging in linux, and need access to register content of the user space process.  I am using L4_Copy_regs_to_mrs(), but it seems to return incorrect information.  For example in the listing below note the return values for fp & lr.   As for the pc value, it seems that it does not reflect user thread the address range  which should be within 0x9000.

  r0 = 00000000, r1 = 000008e1, r2 = 000008e1, r3 = 000008e1
  r4 = 095f3da0, r5 = 095f3d6c, r6 = 07dc6274, r7 = 07dc605c
  r8 = 00000001, r9 = fffff71f, r10= e0011200, fp = 00000000
  ip = 07f95074, sp = 07ff2780, lr = 00000001, pc = 07f95060
  cpsr = e0011200, spsr = 00000000

My questions at the moment:

1) what is actually returned by the L4_Copy_regs_to_mrs() ?
2) How can I get user threads register values ?
3) How can I set user threads register values ?

Thanks,
Iyad



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