include/asm/thread_info.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002
0003 #ifndef _ASM_CSKY_THREAD_INFO_H
0004 #define _ASM_CSKY_THREAD_INFO_H
0005
0006 #ifndef __ASSEMBLY__
0007
0008 #include <asm/types.h>
0009 #include <asm/page.h>
0010 #include <asm/processor.h>
0011 #include <abi/switch_context.h>
0012
0013 struct thread_info {
0014     struct task_struct  *task;
0015     void            *dump_exec_domain;
0016     unsigned long       flags;
0017     int         preempt_count;
0018     unsigned long       tp_value;
0019     struct restart_block    restart_block;
0020     struct pt_regs      *regs;
0021     unsigned int        cpu;
0022 };
0023
0024 #define INIT_THREAD_INFO(tsk)           \
0025 {                       \
0026     .task       = &tsk,         \
0027     .preempt_count  = INIT_PREEMPT_COUNT,   \
0028     .cpu        = 0,            \
0029     .restart_block = {          \
0030         .fn = do_no_restart_syscall,    \
0031     },                  \
0032 }
0033
0034 #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
0035
0036 #define thread_saved_fp(tsk) \
0037     ((unsigned long)(((struct switch_stack *)(tsk->thread.sp))->r8))
0038
0039 #define thread_saved_sp(tsk) \
0040     ((unsigned long)(tsk->thread.sp))
0041
0042 #define thread_saved_lr(tsk) \
0043     ((unsigned long)(((struct switch_stack *)(tsk->thread.sp))->r15))
0044
0045 static inline struct thread_info *current_thread_info(void)
0046 {
0047     unsigned long sp;
0048
0049     asm volatile("mov %0, sp\n":"=r"(sp));
0050
0051     return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
0052 }
0053
0054 #endif /* !__ASSEMBLY__ */
0055
0056 #define TIF_SIGPENDING      0   /* signal pending */
0057 #define TIF_NOTIFY_RESUME   1       /* callback before returning to user */
0058 #define TIF_NEED_RESCHED    2   /* rescheduling necessary */
0059 #define TIF_UPROBE      3   /* uprobe breakpoint or singlestep */
0060 #define TIF_SYSCALL_TRACE   4   /* syscall trace active */
0061 #define TIF_SYSCALL_TRACEPOINT  5       /* syscall tracepoint instrumentation */
0062 #define TIF_SYSCALL_AUDIT   6   /* syscall auditing */
0063 #define TIF_NOTIFY_SIGNAL   7   /* signal notifications exist */
0064 #define TIF_POLLING_NRFLAG  16  /* poll_idle() is TIF_NEED_RESCHED */
0065 #define TIF_MEMDIE      18      /* is terminating due to OOM killer */
0066 #define TIF_RESTORE_SIGMASK 20  /* restore signal mask in do_signal() */
0067 #define TIF_SECCOMP     21  /* secure computing */
0068
0069 #define _TIF_SIGPENDING     (1 << TIF_SIGPENDING)
0070 #define _TIF_NOTIFY_RESUME  (1 << TIF_NOTIFY_RESUME)
0071 #define _TIF_NEED_RESCHED   (1 << TIF_NEED_RESCHED)
0072 #define _TIF_SYSCALL_TRACE  (1 << TIF_SYSCALL_TRACE)
0073 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
0074 #define _TIF_SYSCALL_AUDIT  (1 << TIF_SYSCALL_AUDIT)
0075 #define _TIF_NOTIFY_SIGNAL  (1 << TIF_NOTIFY_SIGNAL)
0076 #define _TIF_UPROBE     (1 << TIF_UPROBE)
0077 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
0078 #define _TIF_MEMDIE     (1 << TIF_MEMDIE)
0079 #define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
0080 #define _TIF_SECCOMP        (1 << TIF_SECCOMP)
0081
0082 #define _TIF_WORK_MASK      (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
0083                  _TIF_NOTIFY_RESUME | _TIF_UPROBE | \
0084                  _TIF_NOTIFY_SIGNAL)
0085
0086 #define _TIF_SYSCALL_WORK   (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
0087                  _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
0088
0089 #endif  /* _ASM_CSKY_THREAD_INFO_H */