/* Initialize a dde26 thread.
*
* - Allocate thread data, as well as a Linux task struct,
* - Fill in default values for thread_info, and task,
* - Adapt task struct's thread_info backreference
* - Initialize the DDE sleep lock
*/
static dde26_thread_data *init_dde26_thread(void)
{
/*
* Virtual PID counter
*/
static atomic_t pid_counter = ATOMIC_INIT(0);
dde26_thread_data *t = vmalloc(sizeof(dde26_thread_data));
Assert(t);
memcpy(&t->_vpid, &init_struct_pid, sizeof(struct pid));
t->_vpid.numbers[0].nr = atomic_inc_return(&pid_counter);
memcpy(&LX_THREAD(t), &init_thread, sizeof(struct thread_info));
LX_TASK(t) = vmalloc(sizeof(struct task_struct));
Assert(LX_TASK(t));
memcpy(LX_TASK(t), &init_task, sizeof(struct task_struct));
/* nice: Linux backreferences a task`s thread_info from the
* task struct (which in turn can be found using the
* thread_info...) */
LX_TASK(t)->stack = &LX_THREAD(t);
/* initialize this thread's sleep lock */
SLEEP_LOCK(t) = ddekit_sem_init(0);
return t;
}
/**
* Initialize a DDE Linux 2.6 thread
*
* - Allocate thread data, as well as a Linux task struct,
* - Fill in default values for thread_info, and task,
* - Adapt task struct's thread_info backreference
* - Initialize the DDE sleep lock
*/
static inline dde_linux26_thread_data *init_dde_linux26_thread(void)
{
dde_linux26_thread_data *t = vmalloc(sizeof(dde_linux26_thread_data));
dde_kit_assert(t);
memcpy(&LX_THREAD(t), &init_thread, sizeof(struct thread_info));
LX_TASK(t) = vmalloc(sizeof(struct task_struct));
dde_kit_assert(LX_TASK(t));
memcpy(LX_TASK(t), &init_task, sizeof(struct task_struct));
/* nice: Linux backreferences a task`s thread_info from the
* task struct (which in turn can be found using the
* thread_info...) */
LX_TASK(t)->thread_info = &LX_THREAD(t);
/* initialize this thread's sleep lock */
SLEEP_LOCK(t) = dde_kit_sem_init(0);
return t;
}
/*****************************************************************************
** Current() implementation **
*****************************************************************************/
struct thread_info *current_thread_info(void)
{
dde_linux26_thread_data *cur = (dde_linux26_thread_data *)dde_kit_thread_get_my_data();
return &LX_THREAD(cur);
}