| /* |
| * PowerPC BookIII S hardware breakpoint definitions |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| * |
| * Copyright 2010, IBM Corporation. |
| * Author: K.Prasad <prasad@linux.vnet.ibm.com> |
| * |
| */ |
| |
| #ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H |
| #define _PPC_BOOK3S_64_HW_BREAKPOINT_H |
| |
| #ifdef __KERNEL__ |
| #ifdef CONFIG_HAVE_HW_BREAKPOINT |
| |
| struct arch_hw_breakpoint { |
| unsigned long address; |
| int type; |
| u8 len; /* length of the target data symbol */ |
| bool extraneous_interrupt; |
| }; |
| |
| #include <linux/kdebug.h> |
| #include <asm/reg.h> |
| #include <asm/debug.h> |
| |
| struct perf_event; |
| struct pmu; |
| struct perf_sample_data; |
| |
| #define HW_BREAKPOINT_ALIGN 0x7 |
| /* Maximum permissible length of any HW Breakpoint */ |
| #define HW_BREAKPOINT_LEN 0x8 |
| |
| extern int hw_breakpoint_slots(int type); |
| extern int arch_bp_generic_fields(int type, int *gen_bp_type); |
| extern int arch_check_bp_in_kernelspace(struct perf_event *bp); |
| extern int arch_validate_hwbkpt_settings(struct perf_event *bp); |
| extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, |
| unsigned long val, void *data); |
| int arch_install_hw_breakpoint(struct perf_event *bp); |
| void arch_uninstall_hw_breakpoint(struct perf_event *bp); |
| void hw_breakpoint_pmu_read(struct perf_event *bp); |
| extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk); |
| |
| extern struct pmu perf_ops_bp; |
| extern void ptrace_triggered(struct perf_event *bp, |
| struct perf_sample_data *data, struct pt_regs *regs); |
| static inline void hw_breakpoint_disable(void) |
| { |
| set_dabr(0); |
| } |
| extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs); |
| |
| #else /* CONFIG_HAVE_HW_BREAKPOINT */ |
| static inline void hw_breakpoint_disable(void) { } |
| static inline void thread_change_pc(struct task_struct *tsk, |
| struct pt_regs *regs) { } |
| #endif /* CONFIG_HAVE_HW_BREAKPOINT */ |
| #endif /* __KERNEL__ */ |
| #endif /* _PPC_BOOK3S_64_HW_BREAKPOINT_H */ |