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_NOTIFY_SIGNAL 7 /* signal notifications exist */ 68 #define TIF_POLLING_NRFLAG 16 /* poll_idle() is TIF_NEED_RESCHED */ 69 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ 70 #define TIF_RESTORE_SIGMASK 20 /* restore signal mask in do_signal() */ 71 #define TIF_SECCOMP 21 /* secure computing */ 72 73 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 74 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 75 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 76 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 77 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) 78 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) 79 #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) 80 #define _TIF_UPROBE (1 << TIF_UPROBE) 81 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 82 #define _TIF_MEMDIE (1 << TIF_MEMDIE) 83 #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) 84 #define _TIF_SECCOMP (1 << TIF_SECCOMP) 85 86 #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ 87 _TIF_NOTIFY_RESUME | _TIF_UPROBE | \ 88 _TIF_NOTIFY_SIGNAL) 89 90 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ 91 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP) 92 93 #endif /* _ASM_CSKY_THREAD_INFO_H */ 94