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From: Peter Balazovic <balazovic.peter@gmail.com>
Date: Wed, 28 Nov 2018 22:47:00 -0000
Message-ID: <CAFq4t4g+J9fy=-tcEn4f=2YwpPmvCd+FbawXNZc2b249FfJNsg@mail.gmail.com>
Subject: =?UTF-8?Q?Re=3A_gdbserver=3A_Target_description_specified_unknown_?=	=?UTF-8?Q?architecture_=E2=80=9Caarch64=E2=80=9D?=
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mine linux machine of gdb config

(gdb) show configuration
This GDB was configured as follows:
   configure --host=x86_64-linux-gnu --target=x86_64-linux-gnu
             --with-auto-load-dir=$debugdir:$datadir/auto-load
             --with-auto-load-safe-path=$debugdir:$datadir/auto-load
             --with-expat
             --with-gdb-datadir=/usr/share/gdb (relocatable)
             --with-jit-reader-dir=/usr/lib/gdb (relocatable)
             --without-libunwind-ia64
             --with-lzma
             --with-python=/usr (relocatable)
             --without-guile
             --with-separate-debug-dir=/usr/lib/debug (relocatable)
             --with-system-gdbinit=/etc/gdb/gdbinit
             --with-babeltrace

("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
(gdb) set architecture
auto               i386               i386:intel         i386:nacl
i386:x64-32        i386:x64-32:intel  i386:x64-32:nacl   i386:x86-64
i386:x86-64:intel  i386:x86-64:nacl   i8086


On Wed, Nov 28, 2018 at 11:28 PM Pedro Alves <palves@redhat.com> wrote:

> On 11/28/2018 06:31 PM, Peter Balazovic wrote:
>
> > I am looking for an advice to correctly debug with ARM remote target.
>
> Does "set architecture <TAB><TAB>" give you the option to select aarch64?
>
> It sounds like your gdb is not configured to support Aarch64.
>
> You'll need a gdb configured with
>   --target=aarch64-linux-gnu
> or
>   --enable-targets=aarch64-linux-gnu
>   --enable-targets=all
>
> Try "show configuration" in gdb.
>
> Thanks,
> Pedro Alves
>