[nios2] fix _initialize_nios2_linux_tdep for BFD mach changes
Commit Message
As a consequence of this patch
https://sourceware.org/ml/binutils/2015-07/msg00015.html
which introduced new BFD mach identifiers for Nios II R1 and R2
processor variants, BFD now identifies Nios II R1 objects as
bfd_mach_nios2r1 instead of bfd_mach_nios2. This breaks
the call to gdbarch_register_osabi, such that GDB fails to recognize R1
nios2-linux-gnu executables. Note that this is *not* due to any
incompatible change in R1 ELF objects, just in BFD's internal
representation of the mach values.
I stole this fix verbatim from the MIPS back end so I consider it
borderline obvious. I don't like to leave GDB in a broken state so I
propose to commit this in a few days unless I hear objections meanwhile.
The patches to add GDB support for Nios II R2 objects will be coming
along later; this patch just un-breaks the existing support for R1.
-Sandra
@@ -223,8 +223,14 @@ extern initialize_file_ftype _initialize_nios2_linux_tdep;
void
_initialize_nios2_linux_tdep (void)
{
- gdbarch_register_osabi (bfd_arch_nios2, 0, GDB_OSABI_LINUX,
- nios2_linux_init_abi);
+
+ const struct bfd_arch_info *arch_info;
+
+ for (arch_info = bfd_lookup_arch (bfd_arch_nios2, 0);
+ arch_info != NULL;
+ arch_info = arch_info->next)
+ gdbarch_register_osabi (bfd_arch_nios2, arch_info->mach,
+ GDB_OSABI_LINUX, nios2_linux_init_abi);
initialize_tdesc_nios2_linux ();
}