arch/csky/include/asm/thread_info.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4 #ifndef _ASM_CSKY_THREAD_INFO_H
   5 #define _ASM_CSKY_THREAD_INFO_H
   6
   7 #ifndef __ASSEMBLY__
   8
   9 #include <linux/version.h>
  10 #include <asm/types.h>
  11 #include <asm/page.h>
  12 #include <asm/processor.h>
  13 #include <abi/switch_context.h>
  14
  15 struct thread_info {
  16         struct task_struct      *task;
  17         void                    *dump_exec_domain;
  18         unsigned long           flags;
  19         int                     preempt_count;
  20         unsigned long           tp_value;
  21         mm_segment_t            addr_limit;
  22         struct restart_block    restart_block;
  23         struct pt_regs          *regs;
  24         unsigned int            cpu;
  25 };
  26
  27 #define INIT_THREAD_INFO(tsk)                   \
  28 {                                               \
  29         .task           = &tsk,                 \
  30         .preempt_count  = INIT_PREEMPT_COUNT,   \
  31         .addr_limit     = KERNEL_DS,            \
  32         .cpu            = 0,                    \
  33         .restart_block = {                      \
  34                 .fn = do_no_restart_syscall,    \
  35         },                                      \
  36 }
  37
  38 #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
  39
  40 #define thread_saved_fp(tsk) \
  41         ((unsigned long)(((struct switch_stack *)(tsk->thread.sp))->r8))
  42
  43 #define thread_saved_sp(tsk) \
  44         ((unsigned long)(tsk->thread.sp))
  45
  46 #define thread_saved_lr(tsk) \
  47         ((unsigned long)(((struct switch_stack *)(tsk->thread.sp))->r15))
  48
  49 static inline struct thread_info *current_thread_info(void)
  50 {
  51         unsigned long sp;
  52
  53         asm volatile("mov %0, sp\n":"=r"(sp));
  54
  55         return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
  56 }
  57
  58 #endif /* !__ASSEMBLY__ */
  59
  60 #define TIF_SIGPENDING          0       /* signal pending */
  61 #define TIF_NOTIFY_RESUME       1       /* callback before returning to user */
  62 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
  63 #define TIF_UPROBE              3       /* uprobe breakpoint or singlestep */
  64 #define TIF_SYSCALL_TRACE       4       /* syscall trace active */
  65 #define TIF_SYSCALL_TRACEPOINT  5       /* syscall tracepoint instrumentation */
  66 #define TIF_SYSCALL_AUDIT       6       /* syscall auditing */
  67 #define TIF_POLLING_NRFLAG      16      /* poll_idle() is TIF_NEED_RESCHED */
  68 #define TIF_MEMDIE              18      /* is terminating due to OOM killer */
  69 #define TIF_RESTORE_SIGMASK     20      /* restore signal mask in do_signal() */
  70 #define TIF_SECCOMP             21      /* secure computing */
  71
  72 #define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
  73 #define _TIF_NOTIFY_RESUME      (1 << TIF_NOTIFY_RESUME)
  74 #define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
  75 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
  76 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
  77 #define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
  78 #define _TIF_UPROBE             (1 << TIF_UPROBE)
  79 #define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
  80 #define _TIF_MEMDIE             (1 << TIF_MEMDIE)
  81 #define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
  82 #define _TIF_SECCOMP            (1 << TIF_SECCOMP)
  83
  84 #define _TIF_WORK_MASK          (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
  85                                  _TIF_NOTIFY_RESUME | _TIF_UPROBE)
  86
  87 #define _TIF_SYSCALL_WORK       (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
  88                                  _TIF_SYSCALL_TRACEPOINT)
  89
  90 #endif  /* _ASM_CSKY_THREAD_INFO_H */