Re: gdbserver: Target description specified unknown architecture “aarch64”

[Pedro Alves <palves@redhat.com>]

On 11/28/2018 10:42 PM, Peter Balazovic wrote:
> this is mine config available on gdb
> 
> (gdb) show configuration
> This GDB was configured as follows:
>    configure --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32
                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^

As suspected, here's the problem ^^

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

As you can see, your build of gdb only supports x86 machines.

With an --enable-targets=all build, I see many, many more entries:

(gdb) set architecture
Requires an argument. Valid arguments are ARC600, A6, ARC601, ARC700, A7, ARCv2, EM, HS, arm, armv2, armv2a, armv3, armv3m, armv4, armv4t, armv5, armv5t, armv5te, xscale, ep9312, iwmmxt, iwmmxt2, armv5tej, armv6, armv6kz, armv6t2, armv6k, armv7, armv6-m, armv6s-m, armv7e-m, armv8-a, armv8-r, armv8-m.base, armv8-m.main, arm_any, avr, avr:1, avr:2, avr:25, avr:3, avr:31, avr:35, avr:4, avr:5, avr:51, avr:6, avr:100, avr:101, avr:102, avr:103, avr:104, avr:105, avr:106, avr:107, bfin, cris, crisv32, cris:common_v10_v32, csky, [...]
ia64-elf64, ia64-elf32, auto.
(gdb)

... including the aarch64 you need:

(gdb) set architecture aarch64<TAB>
aarch64        aarch64:ilp32  

> 
> 
> 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