| /* | |
| * 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__ | |
| struct arch_hw_breakpoint { | |
| unsigned long address; | |
| u16 type; | |
| u16 len; /* length of the target data symbol */ | |
| }; | |
| /* Note: Don't change the the first 6 bits below as they are in the same order | |
| * as the dabr and dabrx. | |
| */ | |
| #define HW_BRK_TYPE_READ 0x01 | |
| #define HW_BRK_TYPE_WRITE 0x02 | |
| #define HW_BRK_TYPE_TRANSLATE 0x04 | |
| #define HW_BRK_TYPE_USER 0x08 | |
| #define HW_BRK_TYPE_KERNEL 0x10 | |
| #define HW_BRK_TYPE_HYP 0x20 | |
| #define HW_BRK_TYPE_EXTRANEOUS_IRQ 0x80 | |
| /* bits that overlap with the bottom 3 bits of the dabr */ | |
| #define HW_BRK_TYPE_RDWR (HW_BRK_TYPE_READ | HW_BRK_TYPE_WRITE) | |
| #define HW_BRK_TYPE_DABR (HW_BRK_TYPE_RDWR | HW_BRK_TYPE_TRANSLATE) | |
| #define HW_BRK_TYPE_PRIV_ALL (HW_BRK_TYPE_USER | HW_BRK_TYPE_KERNEL | \ | |
| HW_BRK_TYPE_HYP) | |
| #ifdef CONFIG_HAVE_HW_BREAKPOINT | |
| #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 | |
| 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) | |
| { | |
| struct arch_hw_breakpoint brk; | |
| brk.address = 0; | |
| brk.type = 0; | |
| brk.len = 0; | |
| __set_breakpoint(&brk); | |
| } | |
| 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 */ |