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Download the ARM64 GDB package from here and save it somewhere.
Unpack the package. This should produce the folders DEBIAN, etc, and usr.
Code Block
language bash
theme Midnight
linenumbers true
$ sudo dpkg-deb -R gdb_7.12-6_arm64.deb .
Compress the etc and usr folders. Optionally delete the DEBIAN, etc, and usr folders when you are done.
On a default PetaLinux image, zip and tar files are supported.
Code Block
language bash
theme Midnight
linenumbers true
$ zip -r gdb.zip etc usr

On the guest, copy the compressed file via SCP and extract it.

Code Block

language	bash
theme	Midnight
linenumbers	true

root@xilinx-zcu102-20192020_2:~# scp <host user>@<host IP>:/path/to/gdb.zip .
root@xilinx-zcu102-20192020_2:~# unzip gdb.zip

On the guest, copy the extracted contents to root.
Code Block
language bash
theme Midnight
linenumbers true
root@xilinx-zcu102-20192020_2:~# cp -r etc usr /

Running GDB on the Guest

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Code Block

language	bash
theme	Midnight
linenumbers	true

root@xilinx-zcu102-20192020_2:~# scp <host user>@<host IP>:/scratch/proj/gdb-test/segfault.c .
<host user>@<host IP>'s password: 
segfault.c                                                  100%  171     0.2KB/s   00:00    
root@xilinx-zcu102-20192020_2:~# scp <host user>@<host IP>:/scratch/proj/gdb-test/segfault.elf .
<host user>@<host IP>'s password: 
segfault.elf                                                100%   11KB  10.6KB/s   00:00    
root@xilinx-zcu102-20192020_2:~# gdb
gdb: /lib/libncurses.so.5: no version information available (required by gdb)
gdb: /lib/libncurses.so.5: no version information available (required by gdb)
gdb: /lib/libncurses.so.5: no version information available (required by gdb)
gdb: /lib/libtinfo.so.5: no version information available (required by gdb)
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "aarch64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) file segfault.elf
Reading symbols from segfault.elf...done.
(gdb) r
Starting program: /home/root/segfault.elf 

Program received signal SIGSEGV, Segmentation fault.
0x00000000004005d8 in main () at segfault.c:8
8	    *p_null = 0xAA55AA55;
(gdb)

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Code Block

language	cpp
theme	Midnight
linenumbers	true

Reading symbols from test.elf...done.
(gdb) b main
Breakpoint 1 at 0x4005de: file test.c, line 20.
(gdb) watch global_var & 0x00000003
Hardware watchpoint 2: global_var & 0x00000003
(gdb) r
Starting program: /scratch/gdb-test/test.elf 

Breakpoint 1, main () at test.c:20
20	{
(gdb) c
Continuing.

Hardware watchpoint 2: global_var & 0x00000003

Old value = 0
New value = 3
foo (s=0x7fffffffe1c0) at test.c:38
38	    if (s->str == NULL) {
(gdb) p/x global_var
$1 = 0xcc33cc33
(gdb) info break
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   0x00000000004005de in main at test.c:20
	breakpoint already hit 1 time
2       hw watchpoint  keep y                      global_var & 0x00000003
	breakpoint already hit 1 time
(gdb) info watch
Num     Type           Disp Enb Address            What
2       hw watchpoint  keep y                      global_var & 0x00000003
	breakpoint already hit 1 time
(gdb) d 1
(gdb) d 2
(gdb) info break
No breakpoints or watchpoints.
(gdb)

Stepping through your program

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Versions Compared

Old Version 13

New Version 14

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Running GDB on the Guest

Stepping through your program