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41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/*
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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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* Copyright (C) 2020 Loongson Technology Corporation Limited
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*
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* Author: Chong Qiao <qiaochong@loongson.cn>
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*/
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#ifndef _ASM_WATCH_H
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#define _ASM_WATCH_H
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#include <linux/bitops.h>
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#include <asm/loongarchregs.h>
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void loongarch_install_watch_registers(struct task_struct *t);
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void loongarch_update_watch_registers(struct task_struct *t);
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void loongarch_clear_prev_watch_registers(struct task_struct *prev);
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void loongarch_install_next_watch_registers(struct task_struct *next);
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void loongarch_read_watch_registers(struct pt_regs *regs);
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void loongarch_clear_watch_registers(void);
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void loongarch_probe_watch_registers(struct cpuinfo_loongarch *c);
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unsigned long watch_csrrd(unsigned int reg);
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void watch_csrwr(unsigned long val, unsigned int reg);
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#ifdef CONFIG_HARDWARE_WATCHPOINTS
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#define __process_watch(prev, next) do { \
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if (test_bit(TIF_LOAD_WATCH, &task_thread_info(prev)->flags)) \
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loongarch_clear_prev_watch_registers(prev); \
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if (test_bit(TIF_LOAD_WATCH, &task_thread_info(next)->flags)) \
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loongarch_install_next_watch_registers(next); \
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} while (0)
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#else
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#define __process_watch(prev, next) do {} while (0)
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#endif
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#endif /* _ASM_WATCH_H */
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