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authorLuc Michel <luc.michel@greensocs.com>2019-01-07 15:23:46 +0000
committerPeter Maydell <peter.maydell@linaro.org>2019-01-07 15:23:46 +0000
commit3f940dc988b8b958ad940a373cd4c1d1b32e503e (patch)
tree0a53f1c0eb225595940a5bbb82bcca75ff43cadc
parent53fd65541511386564fb53a91b594459e7f06d7e (diff)
downloadqemu-arm-3f940dc988b8b958ad940a373cd4c1d1b32e503e.tar.gz
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: Luc Michel <luc.michel@greensocs.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20181207090135.7651-13-luc.michel@greensocs.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--gdbstub.c35
1 files changed, 35 insertions, 0 deletions
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;
}