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 14 struct task_struct; 15 16 #include <asm/ptrace.h> 17 #include <asm/types.h> 18 19 typedef 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 */ 25 struct 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_SYSCALL_TRACE 8 52 #define TIF_POLLING_NRFLAG 17 53 #define TIF_MEMDIE 18 54 #define TIF_FREEZE 19 55 #define TIF_RESTORE_SIGMASK 20 56 57 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 58 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 59 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 60 #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) 61 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 62 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 63 #define _TIF_FREEZE (1 << TIF_FREEZE) 64 #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) 65 66 /* 67 * Change these and you break ASM code in entry-common.S 68 */ 69 #define _TIF_WORK_MASK 0x000000ff 70 #define _TIF_WORK_SYSCALL_ENTRY (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP) 71 #define _TIF_WORK_SYSCALL_LEAVE (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP) 72 73 #endif /* __KERNEL__ */ 74 #endif /* __ASM_NDS32_THREAD_INFO_H */ 75