Re: gdb 8.3: "handler for the OSI ABI "FreeBSD" is not built into this configuration"

Martin Simmons
2020-05-23T17:40:47Z

64-bit SPARC is always at least v9.

What do the "show osabi" and "set osabi" commands show?

Can you run gdb under gdb? I.e. (adjusting the paths as required):

gdb/gdb --args gdb/gdb llvm-tblgen llvm-tblgen.core

Then use the outer gdb to step through gdbarch_init_osabi and
can_run_code_for in the inner gdb to see why none of the gdbarch_info
objects match before it prints that warning? You might need to
configure gdb with CFLAGS=-g CXXFLAGS=-g to get useful debugging info.

__Martin

>>>>> On Fri, 22 May 2020 13:35:15 -0600, Chris Nicol said:
>
> Simon,
>
> This link:
>
> https://wiki.freebsd.org/201110DevSummit?action=AttachFile&do=get&target=sparc64_status_201110DevSummit.pdf
>
> at page 4, "CPU Type" makes me suspicious that v9 does not correctly
> characterise my processor. In that same document, there is reference to
> support for "UltraSparc, UltraParc III and V9" processors, whereas the
> SunBlade 100 I am using is referenced as having an UltrasSparcIIe
> processor, which is maybe not "v9"? v9 is possibly something else, such
> as UltraSparc III+. There are sparc64-fbsd-nat.o, sparc64-fbsd.tdep.o ,
> sparc64-nat.o and sparc64-tdep.o object files in my build directory.
>
>
> Chris.
> On 5/22/2020 12:51 PM, Simon Marchi wrote:
> > On 2020-05-22 2:22 p.m., Chris Nicol wrote:
> >> Dear Simon,
> >>
> >> Thanks for your reply. I went ahead and completed the build of
> >> gbd-9.1, which had been the original plan. With the gdb-9.1
> >> executable, I re-ran it against the llvm-tblgen binary and its core
> >> dump, with the same result as in gdb-8.3. So this is progress of a
> >> sort, I suppose.
> >>
> >> Taking now the gdb-9.1 and loading gcc9 into the debugger, then
> >> "show architecture" yields "The target architecture is set
> >> automatically (currently sparc:v9)". The system I am using is based
> >> on the 500-MHz UltraSPARC IIe processor. So maybe this setting,
> >> sparc:v9, is wrong for this platform?
> >>
> >> Best wishes,
> >>
> >> Chris.
> >
> > I'm not really familiar with sparc machines... does that values sound
> > good to you? Does it seem to match the machine you have?
> >
> > In any case, that seems to match the osabi registration line in
> > sparc64-fbsd-tdep.c:
> >
> > gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
> > GDB_OSABI_FREEBSD, sparc64fbsd_init_abi);
> >
> > Is the file sparc64-fbsd-tdep.c being compiled? In other words, does
> > the file gdb/sparc64-fbsd-tdep.o exist in your build directory?
> >
> > Simon
> >
>
>
>
>
>