On Monday 16 April 2007 15:05, Philippe Gerum wrote:
> Could you disassemble the code around location 0x80fb8c5?
The latest version of my code has moved the the addresses a bit:
Xenomai: Switching mythread to secondary mode after exception #14 from
user-space at 0x80fb8cd (pid 3590)
(gdb) disas
Dump of assembler code for function _ZN4AMSC8CRtDequeIcE9push_backERKc:
0x080fb8b4 <_ZN4AMSC8CRtDequeIcE9push_backERKc+0>: push %ebp
0x080fb8b5 <_ZN4AMSC8CRtDequeIcE9push_backERKc+1>: mov %esp,%ebp
0x080fb8b7 <_ZN4AMSC8CRtDequeIcE9push_backERKc+3>: sub $0x8,%esp
0x080fb8ba <_ZN4AMSC8CRtDequeIcE9push_backERKc+6>: mov 0x8(%ebp),%edx
0x080fb8bd <_ZN4AMSC8CRtDequeIcE9push_backERKc+9>: mov 0x8(%ebp),%eax
0x080fb8c0 <_ZN4AMSC8CRtDequeIcE9push_backERKc+12>: mov 0x8(%eax),%eax
0x080fb8c3 <_ZN4AMSC8CRtDequeIcE9push_backERKc+15>: mov (%edx),%edx
0x080fb8c5 <_ZN4AMSC8CRtDequeIcE9push_backERKc+17>: add %eax,%edx
0x080fb8c7 <_ZN4AMSC8CRtDequeIcE9push_backERKc+19>: mov 0xc(%ebp),%eax
0x080fb8ca <_ZN4AMSC8CRtDequeIcE9push_backERKc+22>: movzbl (%eax),%eax
0x080fb8cd <_ZN4AMSC8CRtDequeIcE9push_backERKc+25>: mov %al,(%edx)
0x080fb8cf <_ZN4AMSC8CRtDequeIcE9push_backERKc+27>: mov 0x8(%ebp),%eax
0x080fb8d2 <_ZN4AMSC8CRtDequeIcE9push_backERKc+30>: add $0x8,%eax
0x080fb8d5 <_ZN4AMSC8CRtDequeIcE9push_backERKc+33>: mov %eax,0x4(%esp)
0x080fb8d9 <_ZN4AMSC8CRtDequeIcE9push_backERKc+37>: mov 0x8(%ebp),%eax
0x080fb8dc <_ZN4AMSC8CRtDequeIcE9push_backERKc+40>: mov %eax,(%esp)
0x080fb8df <_ZN4AMSC8CRtDequeIcE9push_backERKc+43>: call 0x80fcb18
<_ZN4AMSC8CRtDequeIcE3incERi>
>
> > as well as the delivery of SIGXCPU to my application (at my request).
> >
> > How do I prevent this page fault?
> >
> > Is this issue covered by the recent NOCOW activity?
>
> Possibly. You need I-pipe 1.7-03 and Xenomai >= v2.3.1 to get the
> ondemand mapping scheme disabled by the nucleus when your thread starts.
I am not familiar with the purpose and implementation of the NOCOW patch.
How would the patch affect my page fault issue?
thanks,
Jeff
_______________________________________________
Xenomai-help mailing list
[email protected]
https://mail.gna.org/listinfo/xenomai-help
