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

Chris Nicol
Fri May 22 18:22:42 GMT 2020

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,


On 5/22/2020 11:36 AM, Simon Marchi wrote:
> On 2020-05-22 1:56 a.m., Chris Nicol wrote:
>> Dear List,
>> My system - SunBlade 100 running FreeBSD 12.1 had a stock gdb 6.1.1
>> version of the debugger, which came with the FreeBSD 12.1 I am running. This version would not would not run against some core dumps I had from llvm-tblgen in the
>> build of llvm90. This was being built with gcc9, a gcc9 which I built
>> and installed on the SunBlade 100 from the /usr/ports tree. When I run
>> the gdb-8.3 against that llvn-tblgen.core, I get an initial message "A
>> handler for the OSI ABI "FreeBSD" is not built into this configuration
>> of GDB. Attempting to continue with the default sparc settings".
> Let's start with this, as it's a sign that there's probably something wrong
> already.
> There should be a call to gdbarch_register_osabi that registers a handler
> for the (cpu, os) pair.  In sparc64-fbsd-tdep.c, I see this call, for
> example:
>     gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
>                             GDB_OSABI_FREEBSD, sparc64fbsd_init_abi);
> However, maybe your particular machine does not match the machine
> bfd_arch_sparc / bfd_mach_sparc_v9?  What does it show if you load
> some binary file into GDB, then do "show architecture"?
> Simon

Dr. Christopher J. Nicol,               Phone:          (403) 329-2261
University Librarian and                FAX:            (403) 329-2234
Professor of Economics,
The University of Lethbridge,           E-Mail:
Lethbridge, Alberta, T1K 3M4, CANADA.

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