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gerrit-public.fairphone.software / kernel / msm / 1bd9debf25b8a5f5029d7619f43e4a9a775973d3 / . / include / asm-ia64 / kprobes.h
blob: bf36a32e37e4661dd4abaa944f55e7776c16ee65 [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>
29#include <asm/break.h>
30
Ananth N Mavinakayanahalli9ec4b1f2005-06-27 15:17:01 -0700[diff] [blame]31#define MAX_INSN_SIZE 16
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]32#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
33
Anil S Keshavamurthy1674eaf2005-06-23 00:09:33 -0700[diff] [blame]34typedef union cmp_inst {
35 struct {
36 unsigned long long qp : 6;
37 unsigned long long p1 : 6;
38 unsigned long long c : 1;
39 unsigned long long r2 : 7;
40 unsigned long long r3 : 7;
41 unsigned long long p2 : 6;
42 unsigned long long ta : 1;
43 unsigned long long x2 : 2;
44 unsigned long long tb : 1;
45 unsigned long long opcode : 4;
46 unsigned long long reserved : 23;
47 }f;
48 unsigned long long l;
49} cmp_inst_t;
50
Rusty Lynch8bc76772005-06-23 00:09:30 -0700[diff] [blame]51struct kprobe;
52
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]53typedef struct _bundle {
54 struct {
55 unsigned long long template : 5;
56 unsigned long long slot0 : 41;
57 unsigned long long slot1_p0 : 64-46;
58 } quad0;
59 struct {
60 unsigned long long slot1_p1 : 41 - (64-46);
61 unsigned long long slot2 : 41;
62 } quad1;
63} __attribute__((__aligned__(16))) bundle_t;
64
65#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
66
Rusty Lynch9508dbf2005-06-27 15:17:12 -0700[diff] [blame]67#define ARCH_SUPPORTS_KRETPROBES
68
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]69#define SLOT0_OPCODE_SHIFT (37)
70#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
71#define SLOT2_OPCODE_SHIFT (37)
72
73#define INDIRECT_CALL_OPCODE (1)
74#define IP_RELATIVE_CALL_OPCODE (5)
75#define IP_RELATIVE_BRANCH_OPCODE (4)
76#define IP_RELATIVE_PREDICT_OPCODE (7)
77#define LONG_BRANCH_OPCODE (0xC)
78#define LONG_CALL_OPCODE (0xD)
79
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]80typedef struct kprobe_opcode {
81 bundle_t bundle;
82} kprobe_opcode_t;
83
84struct fnptr {
85 unsigned long ip;
86 unsigned long gp;
87};
88
89/* Architecture specific copy of original instruction*/
90struct arch_specific_insn {
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]91 /* copy of the instruction to be emulated */
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]92 kprobe_opcode_t insn;
Anil S Keshavamurthycd2675b2005-06-23 00:09:29 -0700[diff] [blame]93 #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
94 #define INST_FLAG_FIX_BRANCH_REG 2
95 unsigned long inst_flag;
96 unsigned short target_br_reg;
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]97};
98
Anil S Keshavamurthyb2761dc2005-06-23 00:09:28 -0700[diff] [blame]99/* ia64 does not need this */
Rusty Lynch8bc76772005-06-23 00:09:30 -0700[diff] [blame]100static inline void arch_copy_kprobe(struct kprobe *p)
101{
102}
103
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]104#ifdef CONFIG_KPROBES
105extern int kprobe_exceptions_notify(struct notifier_block *self,
106 unsigned long val, void *data);
Rusty Lynch9508dbf2005-06-27 15:17:12 -0700[diff] [blame]107
108/* ia64 does not need this */
109static inline void jprobe_return(void)
110{
111}
112
Anil S Keshavamurthyfd7b2312005-06-23 00:09:28 -0700[diff] [blame]113#else /* !CONFIG_KPROBES */
114static inline int kprobe_exceptions_notify(struct notifier_block *self,
115 unsigned long val, void *data)
116{
117 return 0;
118}
119#endif
120#endif /* _ASM_KPROBES_H */