Update port to GDB 8.3.

New features in GDB 8.3 include support for DWARF index caches and
styling (colors) in the CLI and TUI.  Source code styling is also
available via the new SOURCE_HIGHLIGHT option (enabled by default).
GDB 8.3 also adds support for FreeBSD/riscv64.

In addition, kgdb has been updated for changes in 8.3 along with
support for FreeBSD/riscv64 kernels.

The libc++ helpers have been updated to a newer version which adds
support for std::list<> and std::forward_list<>.  The helpers now
also support Python 3.

Finally, a few post-8.3 patches have been backported which add suport
for TLS (Thread Local Storage) variables on FreeBSD amd64, i386,
powerpc, and riscv architectures.  Note that amd64 and i386 do not
support examining TLS variables in core dumps currently.  This support
along with support for additional architectures require kernel changes
and will be added in the future once the kernel has been updated.

Reviewed by:	pizzamig (maintainer)
Differential Revision:	https://reviews.freebsd.org/D20403

1 files changed, 1 insertions, 2 deletions

diff --git a/devel/gdb/files/kgdb/ppcfbsd-kern.c b/devel/gdb/files/kgdb/ppcfbsd-kern.c
index 73522e482ab3..35d99d3b25d7 100644
--- a/devel/gdb/files/kgdb/ppcfbsd-kern.c
+++ b/devel/gdb/files/kgdb/ppcfbsd-kern.c
@@ -109,10 +109,9 @@ ppcfbsd_trapframe_cache (struct frame_info *this_frame, void **this_cache)
 {
   struct gdbarch *gdbarch = get_frame_arch (this_frame);
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   struct trad_frame_cache *cache;
   CORE_ADDR base;
-  int i, regnum;
+  int i;
 
   if (*this_cache)
     return (struct trad_frame_cache *)*this_cache;