Commit 3f940dc9 authored by Luc Michel's avatar Luc Michel Committed by Peter Maydell
Browse files

gdbstub: add support for vAttach packets 



Add support for the vAttach packets. In multiprocess mode, GDB sends
them to attach to additional processes.

Signed-off-by: default avatarLuc Michel <luc.michel@greensocs.com>
Reviewed-by: default avatarEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Acked-by: default avatarAlistair Francis <alistair.francis@wdc.com>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20181207090135.7651-13-luc.michel@greensocs.com
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 53fd6554

gdbstub.c

+35 −0
Original line number Diff line number Diff line
@@ -1348,6 +1348,41 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf) 
                goto unknown_command;

            }

            break;

        } else if (strncmp(p, "Attach;", 7) == 0) {

            unsigned long pid;



            p += 7;



            if (qemu_strtoul(p, &p, 16, &pid)) {

                put_packet(s, "E22");

                break;

            }



            process = gdb_get_process(s, pid);



            if (process == NULL) {

                put_packet(s, "E22");

                break;

            }



            cpu = get_first_cpu_in_process(s, process);



            if (cpu == NULL) {

                /* Refuse to attach an empty process */

                put_packet(s, "E22");

                break;

            }



            process->attached = true;



            s->g_cpu = cpu;

            s->c_cpu = cpu;



            snprintf(buf, sizeof(buf), "T%02xthread:%s;", GDB_SIGNAL_TRAP,

                     gdb_fmt_thread_id(s, cpu, thread_id, sizeof(thread_id)));



            put_packet(s, buf);

            break;

        } else {

            goto unknown_command;

        }