LXR linux/arch/nds32/include/asm/thread

   1/* SPDX-License-Identifier: GPL-2.0 */
   2// Copyright (C) 2005-2017 Andes Technology Corporation
   3
   4#ifndef __ASM_NDS32_THREAD_INFO_H
   5#define __ASM_NDS32_THREAD_INFO_H
   6
   7#ifdef __KERNEL__
   8
   9#define THREAD_SIZE_ORDER       (1)
  10#define THREAD_SIZE             (PAGE_SIZE << THREAD_SIZE_ORDER)
  11
  12#ifndef __ASSEMBLY__
  13
  14struct task_struct;
  15
  16#include <asm/ptrace.h>
  17#include <asm/types.h>
  18
  19typedef unsigned long mm_segment_t;
  20
  21/*
  22 * low level task data that entry.S needs immediate access to.
  23 * __switch_to() assumes cpu_context follows immediately after cpu_domain.
  24 */
  25struct thread_info {
  26        unsigned long flags;    /* low level flags */
  27        __s32 preempt_count;    /* 0 => preemptable, <0 => bug */
  28        mm_segment_t addr_limit;        /* address limit */
  29};
  30#define INIT_THREAD_INFO(tsk)                                           \
  31{                                                                       \
  32        .preempt_count  = INIT_PREEMPT_COUNT,                           \
  33        .addr_limit     = KERNEL_DS,                                    \
  34}
  35#define thread_saved_pc(tsk) ((unsigned long)(tsk->thread.cpu_context.pc))
  36#define thread_saved_fp(tsk) ((unsigned long)(tsk->thread.cpu_context.fp))
  37#endif
  38
  39/*
  40 * thread information flags:
  41 *  TIF_SYSCALL_TRACE   - syscall trace active
  42 *  TIF_SIGPENDING      - signal pending
  43 *  TIF_NEED_RESCHED    - rescheduling necessary
  44 *  TIF_NOTIFY_RESUME   - callback before returning to user
  45 *  TIF_POLLING_NRFLAG  - true if poll_idle() is polling TIF_NEED_RESCHED
  46 */
  47#define TIF_SIGPENDING          1
  48#define TIF_NEED_RESCHED        2
  49#define TIF_SINGLESTEP          3
  50#define TIF_NOTIFY_RESUME       4       /* callback before returning to user */
  51#define TIF_NOTIFY_SIGNAL       5       /* signal notifications exist */
  52#define TIF_SYSCALL_TRACE       8
  53#define TIF_POLLING_NRFLAG      17
  54#define TIF_MEMDIE              18
  55#define TIF_FREEZE              19
  56#define TIF_RESTORE_SIGMASK     20
  57
  58#define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
  59#define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
  60#define _TIF_NOTIFY_RESUME      (1 << TIF_NOTIFY_RESUME)
  61#define _TIF_NOTIFY_SIGNAL      (1 << TIF_NOTIFY_SIGNAL)
  62#define _TIF_SINGLESTEP         (1 << TIF_SINGLESTEP)
  63#define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
  64#define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
  65#define _TIF_FREEZE             (1 << TIF_FREEZE)
  66#define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
  67
  68/*
  69 * Change these and you break ASM code in entry-common.S
  70 */
  71#define _TIF_WORK_MASK          0x000000ff
  72#define _TIF_WORK_SYSCALL_ENTRY (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP)
  73#define _TIF_WORK_SYSCALL_LEAVE (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP)
  74
  75#endif /* __KERNEL__ */
  76#endif /* __ASM_NDS32_THREAD_INFO_H */
  77