#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 task_stack_page(tsk) ((tsk)->stack) #define current_thread_info() task_thread_info(current) #define __HAVE_THREAD_FUNCTIONS #define setup_thread_stack(p, org) ({ \ *(struct task_struct **)(p)->stack = (p); \ task_thread_info(p)->task = (p); \ }) #define end_of_stack(p) ((unsigned long *)(p)->stack + 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 */