[U-Boot-Users] Compiling relocatable code and DATA for PPC

[Wolfgang Denk]

In message <40619F6F.40605 at iti.fi> you wrote:
> I have been trying to find out right options to configure gcc to produce
> data and code

If this is for U-Boot, why don't you just the pre-configured options?
They work fine.

> relocatable code for mpc5xx. The -fpic -meabi -msdata=eabi -G10000
> does code as relocatable but data is still absolute. -fpic is incompatible

This sounds as if you do not understand what  relocatable  means.  Of
course relocatable code may use absolute addressing. "relocatable" is
different from "position independent".

> I have been using gcc for producing absolute code for PPC many, many years
> but now i have need to load dynamically code for non mmu PPC (mpc555).

What is your environment? U-Boot?

> All examples that i have found uses static addresses. Also using
> google i have not found any answers.

You will either have to use PIC (which is not what U-Boot  does),  or
use  a  static link address (which is what U-Boot does for standalone
applications), or  use  relocatable  code  that  you  can  (manually)
relocate  to  a  target  address of your choice (which is what U-Boot
does for the U-Boot code itself).


Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
To be is to program.