Problems converting elf32-sh to coff-sh

[François Costin <costin00@gel.ulaval.ca>]

I need for some reason to convert simple elf object files into coff files.

My compiler produces some R_SH_DIR32 relocations which are not supported by
the binutils for the conversion.  I know you can't do it in the general
case, but I've managed somehow to remap the R_SH_DIR32 as a R_SH_IMM32
reloc.  This part seems to work fine.

Only one exception... when an object file contains a reloc to a function
inside that same object file, the converter adds a weird negative offset to
the symbol name when I ask for an objdump -x.

I did find where the offset comes from there's a line in the coff-sh.c file
inside the CALC_ADDEND macro which goes like this:

cache_ptr->addend = -(ptr->section->vma + ptr->value);

I did try to simply change this to:

cache_ptr->addend = 0;

Now, after doing an objcopy -O coff-sh, when I do an objdump -x with the new
code, I do not see the offset.  But when I do the objdump with an older
version of the code, it does see it.  And it fact it stays there.

I'd just like to know where in the code I can once and for all delete that
offset.  It is only for that specific application and I know that if I can
delete the offset, I'll have no problems anymore converting my object files.

I hope I made myself clear.  I can give more details if needed!


François Costin

Electrical Engineering
Technologies Lyre Inc.