[U-Boot] [PATCH] mpc83xx: Add -fpic relocation support

[Wolfgang Denk]

Dear Joakim Tjernlund,

In message <OF4DCFBD28.58E81A84-ONC12577BA.0047150B-C12577BA.0047D319 at transmode.se> you wrote:
>
> > What happens when one uses this patch in combination with a "standard"
> > (i. e. older, unpatched) GCC?
> 
> Nothing, gcc will produce -fPIC relocs and the code will/should just work.

OK, so your change means effectively a no-op (except for the moderate
size increase in start.S) to most of us?

You mentioned -fpic was smaller and faster; do you have any numbers
for that (especailly for the faster part) ?

> _GLOBAL_OFFSET_TABLE_ is a predefined symbol that the linker defines to
> be in the middle of the -fpic GOT table. It marks the end of the GOT table
> as far as we are concerned(u-boot does not generate so many relocs that 
> the
> linker needs to use the space above _GLOBAL_OFFSET_TABLE_)
> 
> There is no predefined symbol that marks the start of fpic relocs so
> one is added(_GOT_TABLE_) by me to the linker script.

OK - can you please include these explanations into the commit
message?  Thanks.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
You!  What PLANET is this!
	-- McCoy, "The City on the Edge of Forever", stardate 3134.0