>And add proper CFI annotation to it which was previously
>impossible. This prevents "stuck" messages by the dwarf2 unwinder
>when reaching the top of a kernel stack.
>+ENTRY(kernel_thread_helper)
>+ CFI_STARTPROC
>+ movl %edx,%eax
>+ CFI_REGISTER edx,eax
This is pointless, as %eax will be clobbered by the callee of the
subsequent call.
>+ push %edx
>+ CFI_ADJUST_CFA_OFFSET 4
>+ CFI_REL_OFFSET edx,0
This likewise is pointless, as the argument is owned by the callee.
>+ call *%ebx
>+ push %eax
>+ CFI_ADJUST_CFA_OFFSET 4
>+ CFI_REL_OFFSET eax,0
And this too - the value now in %eax has no relation with the
value known by the caller of this routine (which doesn't expect
any return from here anyway).
>+ call do_exit
>+ CFI_ENDPROC
>+ENDPROC(kernel_thread_helper)
Jan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
