e6d8afd2ca
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Cc: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
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* NiosII low-level thread information
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*
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* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
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* Copyright (C) 2004 Microtronix Datacom Ltd.
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*
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* Based on asm/thread_info_no.h from m68k which is:
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*
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* Copyright (C) 2002 David Howells <dhowells@redhat.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_NIOS2_THREAD_INFO_H
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#define _ASM_NIOS2_THREAD_INFO_H
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#ifdef __KERNEL__
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/*
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* Size of the kernel stack for each process.
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*/
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#define THREAD_SIZE_ORDER 1
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#define THREAD_SIZE 8192 /* 2 * PAGE_SIZE */
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#ifndef __ASSEMBLER__
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/*
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* low level task data that entry.S needs immediate access to
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* - this struct should fit entirely inside of one cache line
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* - this struct shares the supervisor stack pages
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* - if the contents of this structure are changed, the assembly constants
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* must also be changed
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*/
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struct thread_info {
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struct task_struct *task; /* main task structure */
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unsigned long flags; /* low level flags */
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__u32 cpu; /* current CPU */
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int preempt_count; /* 0 => preemptable,<0 => BUG */
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struct pt_regs *regs;
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};
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/*
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* macros/functions for gaining access to the thread information structure
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*
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* preempt_count needs to be 1 initially, until the scheduler is functional.
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*/
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#define INIT_THREAD_INFO(tsk) \
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{ \
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.task = &tsk, \
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.flags = 0, \
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.cpu = 0, \
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.preempt_count = INIT_PREEMPT_COUNT, \
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}
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/* how to get the thread information struct from C */
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static inline struct thread_info *current_thread_info(void)
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{
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register unsigned long sp asm("sp");
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return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
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}
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#endif /* !__ASSEMBLER__ */
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/*
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* thread information flags
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* - these are process state flags that various assembly files may need to
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* access
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* - pending work-to-be-done flags are in LSW
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* - other flags in MSW
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*/
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#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
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#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
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#define TIF_SIGPENDING 2 /* signal pending */
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#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
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#define TIF_MEMDIE 4 /* is terminating due to OOM killer */
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#define TIF_SECCOMP 5 /* secure computing */
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#define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */
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#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
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#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
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#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling
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TIF_NEED_RESCHED */
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#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
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#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
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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_SECCOMP (1 << TIF_SECCOMP)
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#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
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#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
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#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
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#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
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/* work to do on interrupt/exception return */
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#define _TIF_WORK_MASK 0x0000FFFE
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#endif /* __KERNEL__ */
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#endif /* _ASM_NIOS2_THREAD_INFO_H */
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