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authorTony Luck <tony.luck@intel.com>2008-08-01 13:13:32 -0400
committerTony Luck <tony.luck@intel.com>2008-08-01 13:21:21 -0400
commit7f30491ccd28627742e37899453ae20e3da8e18f (patch)
tree7291c0a26ed3a31acf9542857af3981d278f5de8 /arch/ia64/include/asm/kprobes.h
parent94ad374a0751f40d25e22e036c37f7263569d24c (diff)
[IA64] Move include/asm-ia64 to arch/ia64/include/asm
After moving the the include files there were a few clean-ups: 1) Some files used #include <asm-ia64/xyz.h>, changed to <asm/xyz.h> 2) Some comments alerted maintainers to look at various header files to make matching updates if certain code were to be changed. Updated these comments to use the new include paths. 3) Some header files mentioned their own names in initial comments. Just deleted these self references. Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/include/asm/kprobes.h')
-rw-r--r--arch/ia64/include/asm/kprobes.h132
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/kprobes.h b/arch/ia64/include/asm/kprobes.h
new file mode 100644
index 000000000000..dbf83fb28db3
--- /dev/null
+++ b/arch/ia64/include/asm/kprobes.h
@@ -0,0 +1,132 @@
1#ifndef _ASM_KPROBES_H
2#define _ASM_KPROBES_H
3/*
4 * Kernel Probes (KProbes)
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 *
20 * Copyright (C) IBM Corporation, 2002, 2004
21 * Copyright (C) Intel Corporation, 2005
22 *
23 * 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
24 * <anil.s.keshavamurthy@intel.com> adapted from i386
25 */
26#include <linux/types.h>
27#include <linux/ptrace.h>
28#include <linux/percpu.h>
29#include <asm/break.h>
30
31#define __ARCH_WANT_KPROBES_INSN_SLOT
32#define MAX_INSN_SIZE 2 /* last half is for kprobe-booster */
33#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
34#define NOP_M_INST (long)(1<<27)
35#define BRL_INST(i1, i2) ((long)((0xcL << 37) | /* brl */ \
36 (0x1L << 12) | /* many */ \
37 (((i1) & 1) << 36) | ((i2) << 13))) /* imm */
38
39typedef union cmp_inst {
40 struct {
41 unsigned long long qp : 6;
42 unsigned long long p1 : 6;
43 unsigned long long c : 1;
44 unsigned long long r2 : 7;
45 unsigned long long r3 : 7;
46 unsigned long long p2 : 6;
47 unsigned long long ta : 1;
48 unsigned long long x2 : 2;
49 unsigned long long tb : 1;
50 unsigned long long opcode : 4;
51 unsigned long long reserved : 23;
52 }f;
53 unsigned long long l;
54} cmp_inst_t;
55
56struct kprobe;
57
58typedef struct _bundle {
59 struct {
60 unsigned long long template : 5;
61 unsigned long long slot0 : 41;
62 unsigned long long slot1_p0 : 64-46;
63 } quad0;
64 struct {
65 unsigned long long slot1_p1 : 41 - (64-46);
66 unsigned long long slot2 : 41;
67 } quad1;
68} __attribute__((__aligned__(16))) bundle_t;
69
70struct prev_kprobe {
71 struct kprobe *kp;
72 unsigned long status;
73};
74
75#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f)
76/* per-cpu kprobe control block */
77#define ARCH_PREV_KPROBE_SZ 2
78struct kprobe_ctlblk {
79 unsigned long kprobe_status;
80 struct pt_regs jprobe_saved_regs;
81 unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE];
82 unsigned long *bsp;
83 unsigned long cfm;
84 atomic_t prev_kprobe_index;
85 struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
86};
87
88#define kretprobe_blacklist_size 0
89
90#define SLOT0_OPCODE_SHIFT (37)
91#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
92#define SLOT2_OPCODE_SHIFT (37)
93
94#define INDIRECT_CALL_OPCODE (1)
95#define IP_RELATIVE_CALL_OPCODE (5)
96#define IP_RELATIVE_BRANCH_OPCODE (4)
97#define IP_RELATIVE_PREDICT_OPCODE (7)
98#define LONG_BRANCH_OPCODE (0xC)
99#define LONG_CALL_OPCODE (0xD)
100#define flush_insn_slot(p) do { } while (0)
101
102typedef struct kprobe_opcode {
103 bundle_t bundle;
104} kprobe_opcode_t;
105
106struct fnptr {
107 unsigned long ip;
108 unsigned long gp;
109};
110
111/* Architecture specific copy of original instruction*/
112struct arch_specific_insn {
113 /* copy of the instruction to be emulated */
114 kprobe_opcode_t *insn;
115 #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
116 #define INST_FLAG_FIX_BRANCH_REG 2
117 #define INST_FLAG_BREAK_INST 4
118 #define INST_FLAG_BOOSTABLE 8
119 unsigned long inst_flag;
120 unsigned short target_br_reg;
121 unsigned short slot;
122};
123
124extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
125extern int kprobe_exceptions_notify(struct notifier_block *self,
126 unsigned long val, void *data);
127
128extern void invalidate_stacked_regs(void);
129extern void flush_register_stack(void);
130extern void arch_remove_kprobe(struct kprobe *p);
131
132#endif /* _ASM_KPROBES_H */