1 #ifndef _ASM_M68K_THREAD_INFO_H 2 #define _ASM_M68K_THREAD_INFO_H 3 4 #include <asm/types.h> 5 #include <asm/page.h> 6 7 struct thread_info { 8 struct task_struct *task; /* main task structure */ 9 unsigned long flags; 10 struct exec_domain *exec_domain; /* execution domain */ 11 int preempt_count; /* 0 => preemptable, <0 => BUG */ 12 __u32 cpu; /* should always be 0 on m68k */ 13 struct restart_block restart_block; 14 }; 15 16 #define PREEMPT_ACTIVE 0x4000000 17 18 #define INIT_THREAD_INFO(tsk) \ 19 { \ 20 .task = &tsk, \ 21 .exec_domain = &default_exec_domain, \ 22 .restart_block = { \ 23 .fn = do_no_restart_syscall, \ 24 }, \ 25 } 26 27 /* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */ 28 #define THREAD_SIZE_ORDER (13 - PAGE_SHIFT) 29 30 #define init_thread_info (init_task.thread.info) 31 #define init_stack (init_thread_union.stack) 32 33 #define task_thread_info(tsk) (&(tsk)->thread.info) 34 #define task_stack_page(tsk) ((tsk)->stack) 35 #define current_thread_info() task_thread_info(current) 36 37 #define __HAVE_THREAD_FUNCTIONS 38 39 #define setup_thread_stack(p, org) ({ \ 40 *(struct task_struct **)(p)->stack = (p); \ 41 task_thread_info(p)->task = (p); \ 42 }) 43 44 #define end_of_stack(p) ((unsigned long *)(p)->stack + 1) 45 46 /* entry.S relies on these definitions! 47 * bits 0-7 are tested at every exception exit 48 * bits 8-15 are also tested at syscall exit 49 */ 50 #define TIF_SIGPENDING 6 /* signal pending */ 51 #define TIF_NEED_RESCHED 7 /* rescheduling necessary */ 52 #define TIF_DELAYED_TRACE 14 /* single step a syscall */ 53 #define TIF_SYSCALL_TRACE 15 /* syscall trace active */ 54 #define TIF_MEMDIE 16 55 #define TIF_FREEZE 17 /* thread is freezing for suspend */ 56 57 #endif /* _ASM_M68K_THREAD_INFO_H */ 58