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