gdbstub: Introduce gdbserver_fork_start()
The upcoming follow-fork-mode child support requires knowing when
fork() is about to happen in order to initialize its state. Add a hook
for that.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-5-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-6-alex.bennee@linaro.org>
diff --git a/bsd-user/main.c b/bsd-user/main.c
index e39eef3..517c6b3 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -113,6 +113,7 @@
start_exclusive();
cpu_list_lock();
mmap_fork_start();
+ gdbserver_fork_start();
}
void fork_end(int child)
diff --git a/gdbstub/user.c b/gdbstub/user.c
index 3ce20b7..536fb43 100644
--- a/gdbstub/user.c
+++ b/gdbstub/user.c
@@ -356,6 +356,10 @@
return -1;
}
+void gdbserver_fork_start(void)
+{
+}
+
static void disable_gdbstub(CPUState *thread_cpu)
{
CPUState *cpu;
diff --git a/include/gdbstub/user.h b/include/gdbstub/user.h
index 68b6534..e33f8d9 100644
--- a/include/gdbstub/user.h
+++ b/include/gdbstub/user.h
@@ -46,6 +46,11 @@
void gdb_signalled(CPUArchState *as, int sig);
/**
+ * gdbserver_fork_start() - inform gdb of the upcoming fork()
+ */
+void gdbserver_fork_start(void);
+
+/**
* gdbserver_fork() - disable gdb stub for child processes.
* @cs: CPU
*/
diff --git a/linux-user/main.c b/linux-user/main.c
index 699da77..755c566 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -145,6 +145,7 @@
mmap_fork_start();
cpu_list_lock();
qemu_plugin_user_prefork_lock();
+ gdbserver_fork_start();
}
void fork_end(int child)
