From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LN6yX-00081J-SX for qemu-devel@nongnu.org; Wed, 14 Jan 2009 09:44:09 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LN6yW-00080s-4E for qemu-devel@nongnu.org; Wed, 14 Jan 2009 09:44:09 -0500 Received: from [199.232.76.173] (port=54475 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LN6yV-00080o-Ug for qemu-devel@nongnu.org; Wed, 14 Jan 2009 09:44:07 -0500 Received: from gecko.sbs.de ([194.138.37.40]:20938) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LN6yV-0004Tb-4v for qemu-devel@nongnu.org; Wed, 14 Jan 2009 09:44:07 -0500 Received: from mail1.sbs.de (localhost [127.0.0.1]) by gecko.sbs.de (8.12.11.20060308/8.12.11) with ESMTP id n0EEi3s5008548 for ; Wed, 14 Jan 2009 15:44:03 +0100 Received: from [139.25.109.167] (mchn012c.ww002.siemens.net [139.25.109.167] (may be forged)) by mail1.sbs.de (8.12.11.20060308/8.12.11) with ESMTP id n0EEi3Cq016364 for ; Wed, 14 Jan 2009 15:44:03 +0100 Message-ID: <496DFA33.2020606@siemens.com> Date: Wed, 14 Jan 2009 15:44:03 +0100 From: Jan Kiszka MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [RESEND][PATCH] gdbstub: Add vCont support Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "qemu-devel@nongnu.org" [ Also available via git://git.kiszka.org/qemu.git queue/gdb ] In order to set the VCPU for the next single-step command, you need gdb 6.8 or better - and this patch. It enhances the existing support for representing VCPUs as threads to the gdb frontend by introducing the vCont remote gdb command. This is used by gdb to switch the debugging focus for single-stepping multi-threaded targets. Signed-off-by: Jan Kiszka --- gdbstub.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 56 insertions(+), 0 deletions(-) diff --git a/gdbstub.c b/gdbstub.c index 0bcd5d5..1cb20b7 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -1542,6 +1542,62 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf) s->signal = 0; gdb_continue(s); return RS_IDLE; + case 'v': + if (strncmp(p, "Cont", 4) == 0) { + int res_signal, res_thread; + + p += 4; + if (*p == '?') { + put_packet(s, "vCont;c;C;s;S"); + break; + } + res = 0; + res_signal = 0; + res_thread = 0; + while (*p) { + int action, signal; + + if (*p++ != ';') { + res = 0; + break; + } + action = *p++; + signal = 0; + if (action == 'C' || action == 'S') + signal = strtoul(p, (char **)&p, 16); + else if (action != 'c' && action != 's') { + res = 0; + break; + } + thread = 0; + if (*p == ':') + thread = strtoull(p+1, (char **)&p, 16); + + action = tolower(action); + if (res == 0 || (res == 'c' && action == 's')) { + res = action; + res_signal = signal; + res_thread = thread; + } + } + if (res) { + if (res_thread != -1 && res_thread != 0) { + for (env = first_cpu; env != NULL; env = env->next_cpu) + if (env->cpu_index + 1 == res_thread) + break; + if (env == NULL) { + put_packet(s, "E22"); + break; + } + s->c_cpu = env; + } + if (res == 's') + cpu_single_step(s->c_cpu, sstep_flags); + gdb_continue(s); + return RS_IDLE; + } + break; + } case 'k': /* Kill the target */ fprintf(stderr, "\nQEMU: Terminated via GDBstub\n");