The upcoming follow-fork-mode child support requires post-fork message
exchange between the parent and the child. Prepare gdbserver_fork() for
this purpose. Rename it to gdbserver_fork_end() to better reflect its
purpose.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <
20240219141628.246823-8-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <
20240305121005.
3528075-9-alex.bennee@linaro.org>
*/
qemu_init_cpu_list();
get_task_state(thread_cpu)->ts_tid = qemu_get_thread_id();
- gdbserver_fork(thread_cpu, pid);
+ gdbserver_fork_end(thread_cpu, pid);
} else {
mmap_fork_end(child);
cpu_list_unlock();
+ gdbserver_fork_end(thread_cpu, pid);
end_exclusive();
}
}
tb_flush(thread_cpu);
}
-/* Disable gdb stub for child processes. */
-void gdbserver_fork(CPUState *cpu, pid_t pid)
+void gdbserver_fork_end(CPUState *cpu, pid_t pid)
{
- if (!gdbserver_state.init || gdbserver_user_state.fd < 0) {
+ if (pid != 0 || !gdbserver_state.init || gdbserver_user_state.fd < 0) {
return;
}
disable_gdbstub(cpu);
void gdbserver_fork_start(void);
/**
- * gdbserver_fork() - disable gdb stub for child processes.
+ * gdbserver_fork_end() - inform gdb of the completed fork()
* @cs: CPU
+ * @pid: 0 if in child process, -1 if fork failed, child process pid otherwise
*/
-void gdbserver_fork(CPUState *cs, pid_t pid);
+void gdbserver_fork_end(CPUState *cs, pid_t pid);
/**
* gdb_syscall_entry() - inform gdb of syscall entry and yield control to it
}
qemu_init_cpu_list();
get_task_state(thread_cpu)->ts_tid = qemu_get_thread_id();
- gdbserver_fork(thread_cpu, pid);
} else {
cpu_list_unlock();
}
+ gdbserver_fork_end(thread_cpu, pid);
/*
* qemu_init_cpu_list() reinitialized the child exclusive state, but we
* also need to keep current_cpu consistent, so call end_exclusive() for