Re: interface prob in gas and ld

[Ian Lance Taylor <ian at wasabisystems dot com>]

"Vineet Sharma, Noida" <vineets@noida.hcltech.com> writes:

> >Normally the 9 would be handled as a reloc addend.  For some targets
> >an addend is stored in the reloc entry itself.  For some it is stored
> >in the object file.
> 
> I have defined "external_reloc"  in include/coff/XXX.h as 
> 
> 	struct external_reloc
> 	{
> 	  char r_vaddr[4];      /* (virtual) address of reference */
> 	  char r_symndx[4];     /* index into symbol table */
> 	  char r_type[2];       /* relocation type */
> 	  char r_addend[2];     /*addend*/
> 	};
> 
> 	#define RELOC           struct external_reloc
> 	#define RELSZ           10+2            /* sizeof (RELOC) */
> 
> But my BFD_ASSEMBLER does not write this structure to the COFF output,rather
> it write the reloc_entry strcuture(v_addr,sym_index,r_type). How do ask it
> to write my structure?

Normally gas will call bfd_install_relocation() which sets up an
arelent structure.  Then when the BFD is closed, the BFD library will
call coff_swap_reloc_out() to convert the arelent to an external_reloc
structure.  That function is defined in coffswap.h with many
parameters.  You probably need to define SWAP_OUT_RELOC_OFFSET in your
bfd/coff-*.c file.

Ian