1#ifndef _ASM_M68K_THREAD_INFO_H 2#define _ASM_M68K_THREAD_INFO_H 3 4#ifndef ASM_OFFSETS_C 5#include <asm/asm-offsets.h> 6#endif 7#include <asm/current.h> 8#include <asm/types.h> 9#include <asm/page.h> 10 11struct thread_info { 12 struct task_struct *task; /* main task structure */ 13 unsigned long flags; 14 struct exec_domain *exec_domain; /* execution domain */ 15 int preempt_count; /* 0 => preemptable, <0 => BUG */ 16 __u32 cpu; /* should always be 0 on m68k */ 17 struct restart_block restart_block; 18}; 19 20#define PREEMPT_ACTIVE 0x4000000 21 22#define INIT_THREAD_INFO(tsk) \ 23{ \ 24 .task = &tsk, \ 25 .exec_domain = &default_exec_domain, \ 26 .preempt_count = INIT_PREEMPT_COUNT, \ 27 .restart_block = { \ 28 .fn = do_no_restart_syscall, \ 29 }, \ 30} 31 32/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */ 33#define THREAD_SIZE_ORDER (13 - PAGE_SHIFT) 34 35#define init_thread_info (init_task.thread.info) 36#define init_stack (init_thread_union.stack) 37 38#ifdef ASM_OFFSETS_C 39#define task_thread_info(tsk) ((struct thread_info *) NULL) 40#else 41#define task_thread_info(tsk) ((struct thread_info *)((char *)tsk+TASK_TINFO)) 42#endif 43 44#define task_stack_page(tsk) ((tsk)->stack) 45#define current_thread_info() task_thread_info(current) 46 47#define __HAVE_THREAD_FUNCTIONS 48 49#define setup_thread_stack(p, org) ({ \ 50 *(struct task_struct **)(p)->stack = (p); \ 51 task_thread_info(p)->task = (p); \ 52}) 53 54#define end_of_stack(p) ((unsigned long *)(p)->stack + 1) 55 56/* entry.S relies on these definitions! 57 * bits 0-7 are tested at every exception exit 58 * bits 8-15 are also tested at syscall exit 59 */ 60#define TIF_SIGPENDING 6 /* signal pending */ 61#define TIF_NEED_RESCHED 7 /* rescheduling necessary */ 62#define TIF_DELAYED_TRACE 14 /* single step a syscall */ 63#define TIF_SYSCALL_TRACE 15 /* syscall trace active */ 64#define TIF_MEMDIE 16 65#define TIF_FREEZE 17 /* thread is freezing for suspend */ 66 67#endif /* _ASM_M68K_THREAD_INFO_H */ 68