[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v999] gdbstub: Add vCont support
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [PATCH v999] gdbstub: Add vCont support |
Date: |
Sun, 07 Jun 2009 10:10:07 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Hi Nathan,
this is the promised vCont support. Basically my original, stone-old
patch, but now rebased to use cpu_find. Still works nicely for me, so
maybe you could check if it also does for user-mode. Hopefully, with
two use cases then, this gets finally merged.
Jan
--------->
This patch adds support for the vCont remote gdb command. It is used by
gdb 6.8 or better to switch the debugging focus for single-stepping
multi-threaded targets, ie. multi-threaded application in user mode
emulation or VCPUs in system emulation.
Signed-off-by: Jan Kiszka <address@hidden>
---
gdbstub.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/gdbstub.c b/gdbstub.c
index 9bd4375..74713fd 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1631,6 +1631,64 @@ 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) {
+ env = find_cpu(res_thread);
+ if (env == NULL) {
+ put_packet(s, "E22");
+ break;
+ }
+ s->c_cpu = env;
+ }
+ if (res == 's') {
+ cpu_single_step(s->c_cpu, sstep_flags);
+ }
+ s->signal = res_signal;
+ gdb_continue(s);
+ return RS_IDLE;
+ }
+ break;
+ } else {
+ goto unknown_command;
+ }
case 'k':
/* Kill the target */
fprintf(stderr, "\nQEMU: Terminated via GDBstub\n");
signature.asc
Description: OpenPGP digital signature
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] [PATCH v999] gdbstub: Add vCont support,
Jan Kiszka <=