62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
#ifndef _ASM_M68K_THREAD_INFO_H
|
|
#define _ASM_M68K_THREAD_INFO_H
|
|
|
|
#include <asm/types.h>
|
|
#include <asm/page.h>
|
|
|
|
struct thread_info {
|
|
struct task_struct *task; /* main task structure */
|
|
unsigned long flags;
|
|
struct exec_domain *exec_domain; /* execution domain */
|
|
int preempt_count; /* 0 => preemptable, <0 => BUG */
|
|
__u32 cpu; /* should always be 0 on m68k */
|
|
struct restart_block restart_block;
|
|
};
|
|
|
|
#define PREEMPT_ACTIVE 0x4000000
|
|
|
|
#define INIT_THREAD_INFO(tsk) \
|
|
{ \
|
|
.task = &tsk, \
|
|
.exec_domain = &default_exec_domain, \
|
|
.restart_block = { \
|
|
.fn = do_no_restart_syscall, \
|
|
}, \
|
|
}
|
|
|
|
/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
|
|
#if PAGE_SHIFT == 13 /* 8k machines */
|
|
#define alloc_thread_info(tsk) ((struct thread_info *)__get_free_pages(GFP_KERNEL,0))
|
|
#define free_thread_info(ti) free_pages((unsigned long)(ti),0)
|
|
#else /* otherwise assume 4k pages */
|
|
#define alloc_thread_info(tsk) ((struct thread_info *)__get_free_pages(GFP_KERNEL,1))
|
|
#define free_thread_info(ti) free_pages((unsigned long)(ti),1)
|
|
#endif /* PAGE_SHIFT == 13 */
|
|
|
|
#define init_thread_info (init_task.thread.info)
|
|
#define init_stack (init_thread_union.stack)
|
|
|
|
#define task_thread_info(tsk) (&(tsk)->thread.info)
|
|
#define current_thread_info() task_thread_info(current)
|
|
|
|
#define __HAVE_THREAD_FUNCTIONS
|
|
|
|
#define setup_thread_stack(p, org) ({ \
|
|
*(struct task_struct **)(p)->thread_info = (p); \
|
|
task_thread_info(p)->task = (p); \
|
|
})
|
|
|
|
#define end_of_stack(p) ((unsigned long *)(p)->thread_info + 1)
|
|
|
|
/* entry.S relies on these definitions!
|
|
* bits 0-7 are tested at every exception exit
|
|
* bits 8-15 are also tested at syscall exit
|
|
*/
|
|
#define TIF_SIGPENDING 6 /* signal pending */
|
|
#define TIF_NEED_RESCHED 7 /* rescheduling necessary */
|
|
#define TIF_DELAYED_TRACE 14 /* single step a syscall */
|
|
#define TIF_SYSCALL_TRACE 15 /* syscall trace active */
|
|
#define TIF_MEMDIE 16
|
|
|
|
#endif /* _ASM_M68K_THREAD_INFO_H */
|