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gdbstub: add multiprocess support to 'sC' packets 

Change the sC packet handling to support the multiprocess extension.
Instead of returning the first thread, we return the first thread of the
current process.

Signed-off-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20181207090135.7651-7-luc.michel@greensocs.com
[PMM: corrected checkpatch comment style nit]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Luc Michel 2019-01-07 15:23:46 +00:00 committed by Peter Maydell
parent e40e5204af
commit 8dbbe9ac7f
1 changed files with 9 additions and 3 deletions
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12
gdbstub.c
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@ -1554,9 +1554,15 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
put_packet(s, "OK");
break;
} else if (strcmp(p,"C") == 0) {
/* "Current thread" remains vague in the spec, so always return
* the first CPU (gdb returns the first thread). */
put_packet(s, "QC1");
/*
* "Current thread" remains vague in the spec, so always return
* the first thread of the current process (gdb returns the
* first thread).
*/
cpu = get_first_cpu_in_process(s, gdb_get_cpu_process(s, s->g_cpu));
snprintf(buf, sizeof(buf), "QC%s",
gdb_fmt_thread_id(s, cpu, thread_id, sizeof(thread_id)));
put_packet(s, buf);
break;
} else if (strcmp(p,"fThreadInfo") == 0) {
s->query_cpu = first_cpu;