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review.evervolv.com / android_kernel_htc_msm8960 / 18a0c23617a2cb1c2e55e650046c2084d823fde0 / . / include / asm-ia64 / kprobes.h
blob: 592abb000e29bc9260257a5f9fb806eae367a21d [file] [log] [blame]
Anil S Keshavamurthyfd7b2312005-06-23 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 Mavinakayanahalli8a5c4dc2005-11-07 01:00:09 -0800[diff] [blame]29#include <linux/percpu.h>
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]30#include <asm/break.h>
31
Ananth N Mavinakayanahalli9ec4b1f2005-06-27 15:17:01 -0700[diff] [blame]32#define MAX_INSN_SIZE 16
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]33#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
34
Anil S Keshavamurthy1674eaf2005-06-23 00:09:33 -0700[diff] [blame]35typedef 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 Lynch8bc76772005-06-23 00:09:30 -0700[diff] [blame]52struct kprobe;
53
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]54typedef 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 Mavinakayanahalli8a5c4dc2005-11-07 01:00:09 -0800[diff] [blame]66struct prev_kprobe {
67 struct kprobe *kp;
68 unsigned long status;
69};
70
71/* per-cpu kprobe control block */
72struct kprobe_ctlblk {
73 unsigned long kprobe_status;
74 struct pt_regs jprobe_saved_regs;
75 struct prev_kprobe prev_kprobe;
76};
77
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]78#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
79
Rusty Lynch9508dbf2005-06-27 15:17:12 -0700[diff] [blame]80#define ARCH_SUPPORTS_KRETPROBES
81
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]82#define SLOT0_OPCODE_SHIFT (37)
83#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
84#define SLOT2_OPCODE_SHIFT (37)
85
86#define INDIRECT_CALL_OPCODE (1)
87#define IP_RELATIVE_CALL_OPCODE (5)
88#define IP_RELATIVE_BRANCH_OPCODE (4)
89#define IP_RELATIVE_PREDICT_OPCODE (7)
90#define LONG_BRANCH_OPCODE (0xC)
91#define LONG_CALL_OPCODE (0xD)
92
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]93typedef struct kprobe_opcode {
94 bundle_t bundle;
95} kprobe_opcode_t;
96
97struct fnptr {
98 unsigned long ip;
99 unsigned long gp;
100};
101
102/* Architecture specific copy of original instruction*/
103struct arch_specific_insn {
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]104 /* copy of the instruction to be emulated */
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]105 kprobe_opcode_t insn;
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]106 #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
107 #define INST_FLAG_FIX_BRANCH_REG 2
Keshavamurthy Anil Sdeac66a2005-09-06 15:19:35 -0700[diff] [blame]108 #define INST_FLAG_BREAK_INST 4
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]109 unsigned long inst_flag;
110 unsigned short target_br_reg;
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]111};
112
Anil S Keshavamurthyb2761dc2005-06-23 00:09:28 -0700[diff] [blame]113/* ia64 does not need this */
Rusty Lynch8bc76772005-06-23 00:09:30 -0700[diff] [blame]114static inline void arch_copy_kprobe(struct kprobe *p)
115{
116}
117
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]118#ifdef CONFIG_KPROBES
119extern int kprobe_exceptions_notify(struct notifier_block *self,
120 unsigned long val, void *data);
Rusty Lynch9508dbf2005-06-27 15:17:12 -0700[diff] [blame]121
122/* ia64 does not need this */
123static inline void jprobe_return(void)
124{
125}
126
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]127#else /* !CONFIG_KPROBES */
128static inline int kprobe_exceptions_notify(struct notifier_block *self,
129 unsigned long val, void *data)
130{
131 return 0;
132}
133#endif
134#endif /* _ASM_KPROBES_H */