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#ifndef _I386_CURRENT_H
#define _I386_CURRENT_H
struct task_struct;
static inline struct task_struct * get_current(void)
{
struct task_struct *current;
__asm__ ( "orl %%esp,%0; movl (%0),%0"
: "=r" (current) : "0" (4092UL) );
return current;
}
#define current get_current()
static inline void set_current(struct task_struct *p)
{
__asm__ ( "orl %%esp,%0; movl %1,(%0)"
: : "r" (4092UL), "r" (p) );
}
static inline execution_context_t *get_execution_context(void)
{
execution_context_t *execution_context;
__asm__ ( "andl %%esp,%0; addl $4096-72,%0"
: "=r" (execution_context) : "0" (~4095UL) );
return execution_context;
}
static inline unsigned long get_stack_top(void)
{
unsigned long p;
__asm__ ( "orl %%esp,%0"
: "=r" (p) : "0" (4092UL) );
return p;
}
#define schedule_tail(_p) \
__asm__ __volatile__ ( \
"andl %%esp,%0; addl $4096-72,%0; movl %0,%%esp; jmp *%1" \
: : "r" (~4095UL), "r" (unlikely(is_idle_task((_p))) ? \
continue_cpu_idle_loop : \
continue_nonidle_task) )
#endif /* !(_I386_CURRENT_H) */
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