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48 lines
1.2 KiB
48 lines
1.2 KiB
20 years ago
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/*
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* include/asm-v850/current.h -- Current task
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*
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* Copyright (C) 2001,02 NEC Corporation
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* Copyright (C) 2001,02 Miles Bader <miles@gnu.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* Written by Miles Bader <miles@gnu.org>
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*/
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#ifndef __V850_CURRENT_H__
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#define __V850_CURRENT_H__
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#ifndef __ASSEMBLY__ /* <linux/thread_info.h> is not asm-safe. */
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#include <linux/thread_info.h>
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#endif
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#include <asm/macrology.h>
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/* Register used to hold the current task pointer while in the kernel.
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Any `call clobbered' register without a special meaning should be OK,
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but check asm/v850/kernel/entry.S to be sure. */
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#define CURRENT_TASK_REGNUM 16
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#define CURRENT_TASK macrology_paste (r, CURRENT_TASK_REGNUM)
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#ifdef __ASSEMBLY__
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/* Put a pointer to the current task structure into REG. */
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#define GET_CURRENT_TASK(reg) \
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GET_CURRENT_THREAD(reg); \
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ld.w TI_TASK[reg], reg
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#else /* !__ASSEMBLY__ */
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/* A pointer to the current task. */
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register struct task_struct *current \
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__asm__ (macrology_stringify (CURRENT_TASK));
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#endif /* __ASSEMBLY__ */
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#endif /* _V850_CURRENT_H */
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