Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 1 | #ifndef _ASM_KPROBES_H |
| 2 | #define _ASM_KPROBES_H |
| 3 | /* |
| 4 | * Kernel Probes (KProbes) |
| 5 | * include/asm-ia64/kprobes.h |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 20 | * |
| 21 | * Copyright (C) IBM Corporation, 2002, 2004 |
| 22 | * Copyright (C) Intel Corporation, 2005 |
| 23 | * |
| 24 | * 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy |
| 25 | * <anil.s.keshavamurthy@intel.com> adapted from i386 |
| 26 | */ |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/ptrace.h> |
Ananth N Mavinakayanahalli | 8a5c4dc | 2005-11-07 01:00:09 -0800 | [diff] [blame] | 29 | #include <linux/percpu.h> |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 30 | #include <asm/break.h> |
| 31 | |
Ananth N Mavinakayanahalli | 9ec4b1f | 2005-06-27 15:17:01 -0700 | [diff] [blame] | 32 | #define MAX_INSN_SIZE 16 |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 33 | #define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6) |
| 34 | |
Anil S Keshavamurthy | 1674eaf | 2005-06-23 00:09:33 -0700 | [diff] [blame] | 35 | typedef union cmp_inst { |
| 36 | struct { |
| 37 | unsigned long long qp : 6; |
| 38 | unsigned long long p1 : 6; |
| 39 | unsigned long long c : 1; |
| 40 | unsigned long long r2 : 7; |
| 41 | unsigned long long r3 : 7; |
| 42 | unsigned long long p2 : 6; |
| 43 | unsigned long long ta : 1; |
| 44 | unsigned long long x2 : 2; |
| 45 | unsigned long long tb : 1; |
| 46 | unsigned long long opcode : 4; |
| 47 | unsigned long long reserved : 23; |
| 48 | }f; |
| 49 | unsigned long long l; |
| 50 | } cmp_inst_t; |
| 51 | |
Rusty Lynch | 8bc7677 | 2005-06-23 00:09:30 -0700 | [diff] [blame] | 52 | struct kprobe; |
| 53 | |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 54 | typedef struct _bundle { |
| 55 | struct { |
| 56 | unsigned long long template : 5; |
| 57 | unsigned long long slot0 : 41; |
| 58 | unsigned long long slot1_p0 : 64-46; |
| 59 | } quad0; |
| 60 | struct { |
| 61 | unsigned long long slot1_p1 : 41 - (64-46); |
| 62 | unsigned long long slot2 : 41; |
| 63 | } quad1; |
| 64 | } __attribute__((__aligned__(16))) bundle_t; |
| 65 | |
Ananth N Mavinakayanahalli | 8a5c4dc | 2005-11-07 01:00:09 -0800 | [diff] [blame] | 66 | struct prev_kprobe { |
| 67 | struct kprobe *kp; |
| 68 | unsigned long status; |
| 69 | }; |
| 70 | |
Zhang Yanmin | d3ef1f5 | 2006-01-13 14:45:21 -0800 | [diff] [blame] | 71 | #define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f) |
Ananth N Mavinakayanahalli | 8a5c4dc | 2005-11-07 01:00:09 -0800 | [diff] [blame] | 72 | /* per-cpu kprobe control block */ |
| 73 | struct kprobe_ctlblk { |
| 74 | unsigned long kprobe_status; |
| 75 | struct pt_regs jprobe_saved_regs; |
Zhang Yanmin | d3ef1f5 | 2006-01-13 14:45:21 -0800 | [diff] [blame] | 76 | unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE]; |
| 77 | unsigned long *bsp; |
| 78 | unsigned long cfm; |
Ananth N Mavinakayanahalli | 8a5c4dc | 2005-11-07 01:00:09 -0800 | [diff] [blame] | 79 | struct prev_kprobe prev_kprobe; |
| 80 | }; |
| 81 | |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 82 | #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry |
| 83 | |
Rusty Lynch | 9508dbf | 2005-06-27 15:17:12 -0700 | [diff] [blame] | 84 | #define ARCH_SUPPORTS_KRETPROBES |
Anil S Keshavamurthy | e6f47f9 | 2006-06-26 00:25:29 -0700 | [diff] [blame] | 85 | #define ARCH_INACTIVE_KPROBE_COUNT 1 |
Rusty Lynch | 9508dbf | 2005-06-27 15:17:12 -0700 | [diff] [blame] | 86 | |
Anil S Keshavamurthy | cd2675b | 2005-06-23 00:09:29 -0700 | [diff] [blame] | 87 | #define SLOT0_OPCODE_SHIFT (37) |
| 88 | #define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) |
| 89 | #define SLOT2_OPCODE_SHIFT (37) |
| 90 | |
| 91 | #define INDIRECT_CALL_OPCODE (1) |
| 92 | #define IP_RELATIVE_CALL_OPCODE (5) |
| 93 | #define IP_RELATIVE_BRANCH_OPCODE (4) |
| 94 | #define IP_RELATIVE_PREDICT_OPCODE (7) |
| 95 | #define LONG_BRANCH_OPCODE (0xC) |
| 96 | #define LONG_CALL_OPCODE (0xD) |
Ananth N Mavinakayanahalli | 0498b63 | 2006-01-09 20:52:46 -0800 | [diff] [blame] | 97 | #define arch_remove_kprobe(p) do {} while (0) |
Anil S Keshavamurthy | cd2675b | 2005-06-23 00:09:29 -0700 | [diff] [blame] | 98 | |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 99 | typedef struct kprobe_opcode { |
| 100 | bundle_t bundle; |
| 101 | } kprobe_opcode_t; |
| 102 | |
| 103 | struct fnptr { |
| 104 | unsigned long ip; |
| 105 | unsigned long gp; |
| 106 | }; |
| 107 | |
| 108 | /* Architecture specific copy of original instruction*/ |
| 109 | struct arch_specific_insn { |
Anil S Keshavamurthy | cd2675b | 2005-06-23 00:09:29 -0700 | [diff] [blame] | 110 | /* copy of the instruction to be emulated */ |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 111 | kprobe_opcode_t insn; |
Anil S Keshavamurthy | cd2675b | 2005-06-23 00:09:29 -0700 | [diff] [blame] | 112 | #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1 |
| 113 | #define INST_FLAG_FIX_BRANCH_REG 2 |
Keshavamurthy Anil S | deac66a | 2005-09-06 15:19:35 -0700 | [diff] [blame] | 114 | #define INST_FLAG_BREAK_INST 4 |
Anil S Keshavamurthy | cd2675b | 2005-06-23 00:09:29 -0700 | [diff] [blame] | 115 | unsigned long inst_flag; |
| 116 | unsigned short target_br_reg; |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 117 | }; |
| 118 | |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 119 | extern int kprobe_exceptions_notify(struct notifier_block *self, |
| 120 | unsigned long val, void *data); |
Rusty Lynch | 9508dbf | 2005-06-27 15:17:12 -0700 | [diff] [blame] | 121 | |
| 122 | /* ia64 does not need this */ |
| 123 | static inline void jprobe_return(void) |
| 124 | { |
| 125 | } |
Zhang Yanmin | d3ef1f5 | 2006-01-13 14:45:21 -0800 | [diff] [blame] | 126 | extern void invalidate_stacked_regs(void); |
| 127 | extern void flush_register_stack(void); |
Rusty Lynch | 9508dbf | 2005-06-27 15:17:12 -0700 | [diff] [blame] | 128 | |
Anil S Keshavamurthy | fd7b231 | 2005-06-23 00:09:28 -0700 | [diff] [blame] | 129 | #endif /* _ASM_KPROBES_H */ |