[gdb] Fix warning in foreach_arch selftests

When running the selftests, I run into:
...
$ gdb -q -batch -ex "maint selftest"
  ...
Running selftest execute_cfa_program::aarch64:ilp32.
warning: A handler for the OS ABI "GNU/Linux" is not built into this
configuration of GDB.  Attempting to continue with the default aarch64:ilp32
settings.
...
and likewise for execute_cfa_program::i8086 and
execute_cfa_program::ia64-elf32.

The warning can easily be reproduced outside the selftests by doing:
...
$ gdb -q -batch -ex "set arch aarch64:ilp32"
...
and can be prevented by first doing "set osabi none".

Fix the warning by setting osabi to none while doing selftests that iterate
over all architectures.

Tested on x86_64-linux.

1 files changed, 13 insertions, 0 deletions

diff --git a/gdb/osabi.h b/gdb/osabi.h
index be01673..3737a77 100644
--- a/gdb/osabi.h
+++ b/gdb/osabi.h
@@ -50,6 +50,13 @@ enum gdb_osabi
   GDB_OSABI_INVALID		/* keep this last */
 };
 
+enum gdb_osabi_mode
+{
+  osabi_auto,
+  osabi_default,
+  osabi_user
+};
+
 /* Register an OS ABI sniffer.  Each arch/flavour may have more than
    one sniffer.  This is used to e.g. differentiate one OS's a.out from
    another.  The first sniffer to return something other than
@@ -89,4 +96,10 @@ const char *osabi_triplet_regexp (enum gdb_osabi osabi);
 void generic_elf_osabi_sniff_abi_tag_sections (bfd *, asection *,
 					       enum gdb_osabi *);
 
+/* Set osabi to MODE/OSABI.  */
+extern void set_osabi (enum gdb_osabi_mode mode, enum gdb_osabi osabi);
+
+/* Return current osabi setting in MODE/OSABI.  */
+extern void get_osabi (enum gdb_osabi_mode &mode, enum gdb_osabi &osabi);
+
 #endif /* OSABI_H */