From 3f940dc988b8b958ad940a373cd4c1d1b32e503e Mon Sep 17 00:00:00 2001 From: Luc Michel Date: Mon, 7 Jan 2019 15:23:46 +0000 Subject: [PATCH] gdbstub: add support for vAttach packets MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add support for the vAttach packets. In multiprocess mode, GDB sends them to attach to additional processes. Signed-off-by: Luc Michel Reviewed-by: Edgar E. Iglesias Acked-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Message-id: 20181207090135.7651-13-luc.michel@greensocs.com Signed-off-by: Peter Maydell --- gdbstub.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/gdbstub.c b/gdbstub.c index 9b6b4d20a0..d80af955ce 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -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; } -- 2.39.5