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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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