Re: Failures with exelib.exp testcase (was Re: minutes 2010-08-19)

["K.Prasad" <prasad@linux.vnet.ibm.com>]

On Tue, Feb 08, 2011 at 02:13:35PM +0100, Mark Wielaard wrote:
> On Thu, 2011-02-03 at 10:59 -0800, Roland McGrath wrote:
> > What you need to do is:
> > 
> > 	Elf64_Addr opd_addr;
> > 	Dwarf_Addr bias;
> > 	Elf_Scn *opd = dwfl_module_address_section (mod, &sym_addr, &bias);
> > 	if (opd == NULL) ...;
> > 	Elf_Data *data = elf_rawdata (opd, NULL);
> > 	if (data == NULL) ...;
> > 	Elf_Data in, out;
> > 	out.d_buf = &final_addr;
> > 	in.d_buf = (char *) data->d_buf + sym_addr;
> > 	out.d_size = in.d_size = sizeof (Elf64_Addr);
> > 	out.d_type = in.d_type = ELF_T_ADDR;
> > 	if (elf64_xlatetom (elf, &out, &in, e_ident[EI_DATA]) == NULL) ...;
> > 	sym_addr = opd_addr + bias;
> 
> Thanks for the pseudocode example. Prasad, is that enough for you to
> take a stab at hacking up a solution for the powerpc symbol lookup
> issue?
>

So basically this would turn out into a piece of code to derive symbol
address in, say dump_unwindsyms() in translate.cxx specific to
__powerpc__ (or so I understand)?

I'll give this a try and report what happens.

Thanks for all the help.

-- K.Prasad