2019-04-16 22:24:35 +07:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2017-10-24 14:47:50 +07:00
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#ifndef __ASM_NDS32_THREAD_INFO_H
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#define __ASM_NDS32_THREAD_INFO_H
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#ifdef __KERNEL__
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#define THREAD_SIZE_ORDER (1)
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#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
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#ifndef __ASSEMBLY__
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struct task_struct;
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#include <asm/ptrace.h>
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#include <asm/types.h>
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typedef unsigned long mm_segment_t;
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/*
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* low level task data that entry.S needs immediate access to.
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* __switch_to() assumes cpu_context follows immediately after cpu_domain.
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*/
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struct thread_info {
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unsigned long flags; /* low level flags */
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__s32 preempt_count; /* 0 => preemptable, <0 => bug */
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mm_segment_t addr_limit; /* address limit */
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};
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#define INIT_THREAD_INFO(tsk) \
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{ \
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.preempt_count = INIT_PREEMPT_COUNT, \
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.addr_limit = KERNEL_DS, \
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}
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#define thread_saved_pc(tsk) ((unsigned long)(tsk->thread.cpu_context.pc))
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#define thread_saved_fp(tsk) ((unsigned long)(tsk->thread.cpu_context.fp))
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#endif
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/*
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* thread information flags:
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* TIF_SYSCALL_TRACE - syscall trace active
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* TIF_SIGPENDING - signal pending
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* TIF_NEED_RESCHED - rescheduling necessary
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* TIF_NOTIFY_RESUME - callback before returning to user
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* TIF_POLLING_NRFLAG - true if poll_idle() is polling TIF_NEED_RESCHED
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*/
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#define TIF_SIGPENDING 1
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#define TIF_NEED_RESCHED 2
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#define TIF_SINGLESTEP 3
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#define TIF_NOTIFY_RESUME 4 /* callback before returning to user */
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#define TIF_SYSCALL_TRACE 8
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#define TIF_POLLING_NRFLAG 17
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#define TIF_MEMDIE 18
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#define TIF_FREEZE 19
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#define TIF_RESTORE_SIGMASK 20
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#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
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#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
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#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
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#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
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#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
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#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
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#define _TIF_FREEZE (1 << TIF_FREEZE)
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#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
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/*
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* Change these and you break ASM code in entry-common.S
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*/
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#define _TIF_WORK_MASK 0x000000ff
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#define _TIF_WORK_SYSCALL_ENTRY (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP)
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#define _TIF_WORK_SYSCALL_LEAVE (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP)
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#endif /* __KERNEL__ */
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#endif /* __ASM_NDS32_THREAD_INFO_H */
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