Is qemu-bfin's gdb-stub broken?

[bata24]

Hello.
When trying to debug with gdb while emulating bfin's ELF, I get packet errors.
Is this the intended behavior? Or any plans to support qemu-user's GDB stubs?
Thanks.

Host: Ubuntu 22.04
bfin-linux-gcc: https://toolchains.bootlin.com/
gdb: 13.2 (built from source)

Here are the steps to reproduce:

root@Ubuntu2204:/tmp# cat test.c
#include <stdio.h>
int main() {
  puts("hoge");
  while (1) {}
}
root@Ubuntu2204:/tmp# bfin-linux-gcc -static ./test.c 
root@Ubuntu2204:/tmp# qemu-bfin -g 1234 ./a.out

root@Ubuntu2204:/tmp/qemu# /usr/local/bin/gdb -q /tmp/a.out -ex 'target remote :1234'
Reading symbols from /tmp/a.out...
Remote debugging using :1234
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...