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/types.h> 8#include <asm/page.h> 9 10#ifndef __ASSEMBLY__ 11#include <asm/current.h> 12 13struct thread_info { 14 struct task_struct *task; /* main task structure */ 15 unsigned long flags; 16 struct exec_domain *exec_domain; /* execution domain */ 17 int preempt_count; /* 0 => preemptable, <0 => BUG */ 18 __u32 cpu; /* should always be 0 on m68k */ 19 unsigned long tp_value; /* thread pointer */ 20 struct restart_block restart_block; 21}; 22#endif /* __ASSEMBLY__ */ 23 24#define PREEMPT_ACTIVE 0x4000000 25 26#define INIT_THREAD_INFO(tsk) \ 27{ \ 28 .task = &tsk, \ 29 .exec_domain = &default_exec_domain, \ 30 .preempt_count = INIT_PREEMPT_COUNT, \ 31 .restart_block = { \ 32 .fn = do_no_restart_syscall, \ 33 }, \ 34} 35 36/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */ 37#define THREAD_SIZE_ORDER (13 - PAGE_SHIFT) 38 39#define init_thread_info (init_task.thread.info) 40#define init_stack (init_thread_union.stack) 41 42#ifdef ASM_OFFSETS_C 43#define task_thread_info(tsk) ((struct thread_info *) NULL) 44#else 45#define task_thread_info(tsk) ((struct thread_info *)((char *)tsk+TASK_TINFO)) 46#endif 47 48#define task_stack_page(tsk) ((tsk)->stack) 49#define current_thread_info() task_thread_info(current) 50 51#define __HAVE_THREAD_FUNCTIONS 52 53#define setup_thread_stack(p, org) ({ \ 54 *(struct task_struct **)(p)->stack = (p); \ 55 task_thread_info(p)->task = (p); \ 56}) 57 58#define end_of_stack(p) ((unsigned long *)(p)->stack + 1) 59 60/* entry.S relies on these definitions! 61 * bits 0-7 are tested at every exception exit 62 * bits 8-15 are also tested at syscall exit 63 */ 64#define TIF_SIGPENDING 6 /* signal pending */ 65#define TIF_NEED_RESCHED 7 /* rescheduling necessary */ 66#define TIF_DELAYED_TRACE 14 /* single step a syscall */ 67#define TIF_SYSCALL_TRACE 15 /* syscall trace active */ 68#define TIF_MEMDIE 16 /* is terminating due to OOM killer */ 69#define TIF_FREEZE 17 /* thread is freezing for suspend */ 70 71#endif /* _ASM_M68K_THREAD_INFO_H */ 72