projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5aae8a53 P |
1 | /* |
| 2 | * PowerPC BookIII S hardware breakpoint definitions | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| 6 | * the Free Software Foundation; either version 2 of the License, or | |
| 7 | * (at your option) any later version. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License | |
| 15 | * along with this program; if not, write to the Free Software | |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 17 | * | |
| 18 | * Copyright 2010, IBM Corporation. | |
| 19 | * Author: K.Prasad <prasad@linux.vnet.ibm.com> | |
| 20 | * | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H | |
| 24 | #define _PPC_BOOK3S_64_HW_BREAKPOINT_H | |
| 25 | ||
| 26 | #ifdef __KERNEL__ | |
| 5aae8a53 | 27 | struct arch_hw_breakpoint { |
| 5aae8a53 | 28 | unsigned long address; |
| 9422de3e MN |
29 | u16 type; |
| 30 | u16 len; /* length of the target data symbol */ | |
| 5aae8a53 P |
31 | }; |
| 32 | ||
| 9422de3e MN |
33 | /* Note: Don't change the the first 6 bits below as they are in the same order |
| 34 | * as the dabr and dabrx. | |
| 35 | */ | |
| 36 | #define HW_BRK_TYPE_READ 0x01 | |
| 37 | #define HW_BRK_TYPE_WRITE 0x02 | |
| 38 | #define HW_BRK_TYPE_TRANSLATE 0x04 | |
| 39 | #define HW_BRK_TYPE_USER 0x08 | |
| 40 | #define HW_BRK_TYPE_KERNEL 0x10 | |
| 41 | #define HW_BRK_TYPE_HYP 0x20 | |
| 42 | #define HW_BRK_TYPE_EXTRANEOUS_IRQ 0x80 | |
| 43 | ||
| 44 | /* bits that overlap with the bottom 3 bits of the dabr */ | |
| 45 | #define HW_BRK_TYPE_RDWR (HW_BRK_TYPE_READ | HW_BRK_TYPE_WRITE) | |
| 46 | #define HW_BRK_TYPE_DABR (HW_BRK_TYPE_RDWR | HW_BRK_TYPE_TRANSLATE) | |
| 47 | #define HW_BRK_TYPE_PRIV_ALL (HW_BRK_TYPE_USER | HW_BRK_TYPE_KERNEL | \ | |
| 48 | HW_BRK_TYPE_HYP) | |
| 49 | ||
| 50 | #ifdef CONFIG_HAVE_HW_BREAKPOINT | |
| 5aae8a53 P |
51 | #include <linux/kdebug.h> |
| 52 | #include <asm/reg.h> | |
| ae3a197e | 53 | #include <asm/debug.h> |
| 5aae8a53 | 54 | |
| 5aae8a53 P |
55 | struct perf_event; |
| 56 | struct pmu; | |
| 57 | struct perf_sample_data; | |
| 58 | ||
| 59 | #define HW_BREAKPOINT_ALIGN 0x7 | |
| 60 | /* Maximum permissible length of any HW Breakpoint */ | |
| 61 | #define HW_BREAKPOINT_LEN 0x8 | |
| 62 | ||
| d09ec738 | 63 | extern int hw_breakpoint_slots(int type); |
| 5aae8a53 P |
64 | extern int arch_bp_generic_fields(int type, int *gen_bp_type); |
| 65 | extern int arch_check_bp_in_kernelspace(struct perf_event *bp); | |
| 66 | extern int arch_validate_hwbkpt_settings(struct perf_event *bp); | |
| 67 | extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, | |
| 68 | unsigned long val, void *data); | |
| 69 | int arch_install_hw_breakpoint(struct perf_event *bp); | |
| 70 | void arch_uninstall_hw_breakpoint(struct perf_event *bp); | |
| 71 | void hw_breakpoint_pmu_read(struct perf_event *bp); | |
| 72 | extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk); | |
| 73 | ||
| 74 | extern struct pmu perf_ops_bp; | |
| 29dfc4fd | 75 | extern void ptrace_triggered(struct perf_event *bp, |
| 5aae8a53 P |
76 | struct perf_sample_data *data, struct pt_regs *regs); |
| 77 | static inline void hw_breakpoint_disable(void) | |
| 78 | { | |
| 9422de3e MN |
79 | struct arch_hw_breakpoint brk; |
| 80 | ||
| 81 | brk.address = 0; | |
| 82 | brk.type = 0; | |
| 83 | brk.len = 0; | |
| 84 | set_break(&brk); | |
| 5aae8a53 | 85 | } |
| 06532a67 | 86 | extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs); |
| 5aae8a53 P |
87 | |
| 88 | #else /* CONFIG_HAVE_HW_BREAKPOINT */ | |
| 89 | static inline void hw_breakpoint_disable(void) { } | |
| 06532a67 P |
90 | static inline void thread_change_pc(struct task_struct *tsk, |
| 91 | struct pt_regs *regs) { } | |
| 5aae8a53 P |
92 | #endif /* CONFIG_HAVE_HW_BREAKPOINT */ |
| 93 | #endif /* __KERNEL__ */ | |
| 94 | #endif /* _PPC_BOOK3S_64_HW_BREAKPOINT_H */ |