gdbstub: lightly refactor connection to avoid snprintf
This may be a bit too much to avoid an snprintf and the slightly dodgy assign to a const variable. But hopefully not. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230630180423.558337-29-alex.bennee@linaro.org>
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@ -332,11 +332,9 @@ static void create_processes(GDBState *s)
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int gdbserver_start(const char *device)
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{
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trace_gdbstub_op_start(device);
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char gdbstub_device_name[128];
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Chardev *chr = NULL;
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Chardev *mon_chr;
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g_autoptr(GString) cs = g_string_new(device);
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if (!first_cpu) {
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error_report("gdbstub: meaningless to attach gdb to a "
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@ -350,15 +348,16 @@ int gdbserver_start(const char *device)
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return -1;
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}
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if (!device) {
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if (cs->len == 0) {
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return -1;
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}
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if (strcmp(device, "none") != 0) {
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if (strstart(device, "tcp:", NULL)) {
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trace_gdbstub_op_start(cs->str);
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if (g_strcmp0(cs->str, "none") != 0) {
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if (g_str_has_prefix(cs->str, "tcp:")) {
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/* enforce required TCP attributes */
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snprintf(gdbstub_device_name, sizeof(gdbstub_device_name),
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"%s,wait=off,nodelay=on,server=on", device);
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device = gdbstub_device_name;
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g_string_append_printf(cs, ",wait=off,nodelay=on,server=on");
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}
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#ifndef _WIN32
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else if (strcmp(device, "stdio") == 0) {
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@ -373,7 +372,7 @@ int gdbserver_start(const char *device)
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* FIXME: it's a bit weird to allow using a mux chardev here
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* and implicitly setup a monitor. We may want to break this.
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*/
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chr = qemu_chr_new_noreplay("gdb", device, true, NULL);
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chr = qemu_chr_new_noreplay("gdb", cs->str, true, NULL);
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if (!chr) {
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return -1;
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}
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