Dear Joakim Tjernlund,
On Thu, Oct 29, 2009 at 02:08:05PM +0100, Joakim Tjernlund wrote:
>
> Just to avoid any misunderstandings, the GOT does not hold offsets, it holds
> absolute addresses. These addresses gets adjusted with an offset when you
> relocate.
thank you, I already understood this.
As far as I can see there is already some GOT handling in cpu/mcf532x/start.S
and the flags (-fPIC) in cpu/mcf532x/config.mk (and other coldfire ports, but
MCF532x/MCF537x is what I am currently working on for testing), but somehow
it does not work.
However, it takes some time for me to understand the assembler code,
especially the powerpc counterpart I am using as a reference.
There is a __got_start and __got_end in my u-boot.map, so I would think
the linker does behave correctly - but I did not yet check if all the
symbols (better: symbols' addresses) expected to be there are really
present:
.reloc 0x00024600 0x1990
0x00024600 __got_start = .
*(.got)
.got 0x00024600 0x1990 cpu/mcf532x/cpu_init.o
0x00025f90 __got_end = .
0x00025f90 _GOT2_TABLE_ = .
*(.got2)
0x00025f90 _FIXUP_TABLE_ = .
*(.fixup)
0x00000000 __got2_entries = ((_FIXUP_TABLE_ -
_GOT2_TABLE_) >> 0x2)
0x00000000 __fixup_entries = ((. -
_FIXUP_TABLE_) >> 0x2)
(flash resides at 0x0, SDRAM at 0x4000000 and CONFIG_SYS_MONITOR_BASE is
0x40020000)
Regards,
Wolfgang
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
