L4Ka. Regression with 4.7 and 4.8 ?

[Oleg Endo]

On Sat, 2013-06-22 at 21:38 +0200, BERTRAND Joël wrote:
> Oleg Endo a écrit :
> > The code in idt.c compiled with 4.6 puts static initialization functions
> > into the .ctors section, while 4.7 puts them into the .init_array
> > section.  Probably this happens only for this single file in the whole
> > kernel.  My guess is that the .init_array section is not handled
> > properly by the startup code of the kernel.  Or maybe it's even stripped
> > out completely (missing in the linker script).  Either way, it seems
> > that static initialization for idt.c is not being done properly and thus
> > the code crashes.
> 
> 	I don't think that ctors are stripped by linker script. This script is 
> built by makefile. Here is my script :
> 
> 
> OUTPUT_FORMAT("elf64-x86-64")
> OUTPUT_ARCH("i386:x86-64")
> BOOTMEM_SIZE = 1024K;
> ...

As I initially assumed, the .init_array section seems to be missing in
the linker script, so it gets stripped.  The .init_array section has to
be handled for code generated by GCC 4.7.  I would say this is an issue
of the L4 software, not GCC.

Cheers,
Oleg