[U-Boot-Users] windriver workbench for u-boot development.

[Engin KARABULUT]

hi,
we have purchased wind power ICE emulator and windriver workbench ocd
2.4. Now we have problem with debugging uboot's assembly files. The
issue is same problem given below.


TITLE:When debugging some versions of the Linux u-boot application,
the debugger cannot do source level debugging of assembly files.

SPR#:112280
DEFECT#:19830
FIX RECORD:19831
FIX RELEASE:Wind River Workbench 2.5 (2006-06-28 00:00:00)
STATUS:In Progress
PRODUCTS AFFECTED:Wind River Workbench 2.4
DESCRIPTION:When debugging some versions of the Linux u-boot
application, the debugger does not perform source level debugging of
assembly files. Workbench fails to find the correct assembly source
file at the u-boot program entry point. Note that in this scenario,
the debugger does not have any problems debugging C source files.

The problem is actually due to incorrect u-boot makefile configuration
where assembly files are built with the directive -Wa,-gstabs, whereas
the C files are built with -gdwarf-2. This results in mixed STABS
debug information for assembly files and DWARF-2 debug information for
C files in the object-file. The Workbench debugger has very limited
support for STABS on Linux, which is mainly restricted to global
information in system libraries (on 2.4.x Linux distributions). The
debugger fully supports DWARF-2.
STEPS TO REPRODUCE:No Details Available.
WORKAROUND:Date Created: 11/17/2005 09:33:45
Visibility: External
Created By: rarunkum
Type: Workaround

The workaround is to change the config.mk in the root level of the
u-boot source. Find the line:

AFLAGS_DEBUG := -Wa,-gstabs

Change it to:
AFLAGS_DEBUG := -Wa,-gdwarf2

Then rebuild u-boot and now you will have DWARF-2 debug information
for all source files. Workbench will now allow you to do source-level
debugging of the assembly file also.

###############################################################################

As you see from windriver's report. They suggest to modify
AFLAGS_DEBUG value to -gdwarf2. But when I compile uboot after
modifying, compiler gives me these error messages.

opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:
Assembler messages:
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable
/opt/WindRiver_Evaluation2.4/workspace/uboot/lib_ppc/ppcstring.S:216:
Error: Relocation cannot be done when using -mrelocatable

I'm using uboot 1.0.0 and gcc 2.95 for powerpc. I'm using this
combination,because only this combination works properly for our
marvell mv64460 development board.

In your opinion, how can I fix this problem?