2009-06-01 12:13:10 -06:00
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#ifndef _I386_HW_BREAKPOINT_H
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#define _I386_HW_BREAKPOINT_H
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#ifdef __KERNEL__
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#define __ARCH_HW_BREAKPOINT_H
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struct arch_hw_breakpoint {
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char *name; /* Contains name of the symbol to set bkpt */
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unsigned long address;
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u8 len;
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u8 type;
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};
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#include <linux/kdebug.h>
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2009-11-05 15:06:50 -07:00
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#include <linux/hw_breakpoint.h>
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2009-06-01 12:13:10 -06:00
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/* Available HW breakpoint length encodings */
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#define HW_BREAKPOINT_LEN_1 0x40
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#define HW_BREAKPOINT_LEN_2 0x44
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#define HW_BREAKPOINT_LEN_4 0x4c
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#define HW_BREAKPOINT_LEN_EXECUTE 0x40
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#ifdef CONFIG_X86_64
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#define HW_BREAKPOINT_LEN_8 0x48
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#endif
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/* Available HW breakpoint type encodings */
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/* trigger on instruction execute */
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#define HW_BREAKPOINT_EXECUTE 0x80
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/* trigger on memory write */
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#define HW_BREAKPOINT_WRITE 0x81
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/* trigger on memory read or write */
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#define HW_BREAKPOINT_RW 0x83
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/* Total number of available HW breakpoint registers */
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#define HBP_NUM 4
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extern struct hw_breakpoint *hbp_kernel[HBP_NUM];
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DECLARE_PER_CPU(struct hw_breakpoint*, this_hbp_kernel[HBP_NUM]);
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extern unsigned int hbp_user_refcount[HBP_NUM];
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extern void arch_install_thread_hw_breakpoint(struct task_struct *tsk);
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extern void arch_uninstall_thread_hw_breakpoint(void);
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extern int arch_check_va_in_userspace(unsigned long va, u8 hbp_len);
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extern int arch_validate_hwbkpt_settings(struct hw_breakpoint *bp,
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struct task_struct *tsk);
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extern void arch_update_user_hw_breakpoint(int pos, struct task_struct *tsk);
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extern void arch_flush_thread_hw_breakpoint(struct task_struct *tsk);
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extern void arch_update_kernel_hw_breakpoint(void *);
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extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
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unsigned long val, void *data);
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#endif /* __KERNEL__ */
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#endif /* _I386_HW_BREAKPOINT_H */
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