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#ifndef _ASM_M68K_THREAD_INFO_H
#define _ASM_M68K_THREAD_INFO_H
#include <asm/types.h>
#include <asm/processor.h>
#include <asm/page.h>
struct thread_info {
struct task_struct *task; /* main task structure */
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;
__u8 supervisor_stack[0];
};
#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 current_thread_info() (current->thread_info)
#define __HAVE_THREAD_FUNCTIONS
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_DELAYED_TRACE 1 /* single step a syscall */
#define TIF_NOTIFY_RESUME 2 /* resumption notification requested */
#define TIF_SIGPENDING 3 /* signal pending */
#define TIF_NEED_RESCHED 4 /* rescheduling necessary */
#define TIF_MEMDIE 5
extern int thread_flag_fixme(void);
/*
* flag set/clear/test wrappers
* - pass TIF_xxxx constants to these functions
*/
#define __set_tsk_thread_flag(tsk, flag, val) ({ \
switch (flag) { \
case TIF_SIGPENDING: \
tsk->thread.work.sigpending = val; \
break; \
case TIF_NEED_RESCHED: \
tsk->thread.work.need_resched = val; \
break; \
case TIF_SYSCALL_TRACE: \
tsk->thread.work.syscall_trace = val; \
break; \
case TIF_MEMDIE: \
tsk->thread.work.memdie = val; \
break; \
default: \
thread_flag_fixme(); \
} \
})
#define __get_tsk_thread_flag(tsk, flag) ({ \
int ___res; \
switch (flag) { \
case TIF_SIGPENDING: \
___res = tsk->thread.work.sigpending; \
break; \
case TIF_NEED_RESCHED: \
___res = tsk->thread.work.need_resched; \
break; \
case TIF_SYSCALL_TRACE: \
___res = tsk->thread.work.syscall_trace;\
break; \
case TIF_MEMDIE: \
___res = tsk->thread.work.memdie;\
break; \
default: \
___res = thread_flag_fixme(); \
} \
___res; \
})
#define __get_set_tsk_thread_flag(tsk, flag, val) ({ \
int __res = __get_tsk_thread_flag(tsk, flag); \
__set_tsk_thread_flag(tsk, flag, val); \
__res; \
})
#define set_tsk_thread_flag(tsk, flag) __set_tsk_thread_flag(tsk, flag, ~0)
#define clear_tsk_thread_flag(tsk, flag) __set_tsk_thread_flag(tsk, flag, 0)
#define test_and_set_tsk_thread_flag(tsk, flag) __get_set_tsk_thread_flag(tsk, flag, ~0)
#define test_tsk_thread_flag(tsk, flag) __get_tsk_thread_flag(tsk, flag)
#define set_thread_flag(flag) set_tsk_thread_flag(current, flag)
#define clear_thread_flag(flag) clear_tsk_thread_flag(current, flag)
#define test_thread_flag(flag) test_tsk_thread_flag(current, flag)
#define set_need_resched() set_thread_flag(TIF_NEED_RESCHED)
#define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED)
#endif /* _ASM_M68K_THREAD_INFO_H */
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