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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-02 05:55:55 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-02 16:32:35 -0400
commit4baa9922430662431231ac637adedddbb0cfb2d7 (patch)
treee8fb765ce3e41c01f33de34a0bc9494f0ae19818 /arch/arm/include/asm/kprobes.h
parentff4db0a043a5dee7180bdffd178e61cd02812c68 (diff)
[ARM] move include/asm-arm to arch/arm/include/asm
Move platform independent header files to arch/arm/include/asm, leaving those in asm/arch* and asm/plat* alone. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/kprobes.h')
-rw-r--r--arch/arm/include/asm/kprobes.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kprobes.h b/arch/arm/include/asm/kprobes.h
new file mode 100644
index 000000000000..a5d0d99ad387
--- /dev/null
+++ b/arch/arm/include/asm/kprobes.h
@@ -0,0 +1,79 @@
1/*
2 * arch/arm/include/asm/kprobes.h
3 *
4 * Copyright (C) 2006, 2007 Motorola Inc.
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 version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 */
15
16#ifndef _ARM_KPROBES_H
17#define _ARM_KPROBES_H
18
19#include <linux/types.h>
20#include <linux/ptrace.h>
21#include <linux/percpu.h>
22
23#define __ARCH_WANT_KPROBES_INSN_SLOT
24#define MAX_INSN_SIZE 2
25#define MAX_STACK_SIZE 64 /* 32 would probably be OK */
26
27/*
28 * This undefined instruction must be unique and
29 * reserved solely for kprobes' use.
30 */
31#define KPROBE_BREAKPOINT_INSTRUCTION 0xe7f001f8
32
33#define regs_return_value(regs) ((regs)->ARM_r0)
34#define flush_insn_slot(p) do { } while (0)
35#define kretprobe_blacklist_size 0
36
37typedef u32 kprobe_opcode_t;
38
39struct kprobe;
40typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
41
42/* Architecture specific copy of original instruction. */
43struct arch_specific_insn {
44 kprobe_opcode_t *insn;
45 kprobe_insn_handler_t *insn_handler;
46};
47
48struct prev_kprobe {
49 struct kprobe *kp;
50 unsigned int status;
51};
52
53/* per-cpu kprobe control block */
54struct kprobe_ctlblk {
55 unsigned int kprobe_status;
56 struct prev_kprobe prev_kprobe;
57 struct pt_regs jprobe_saved_regs;
58 char jprobes_stack[MAX_STACK_SIZE];
59};
60
61void arch_remove_kprobe(struct kprobe *);
62void kretprobe_trampoline(void);
63
64int kprobe_trap_handler(struct pt_regs *regs, unsigned int instr);
65int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
66int kprobe_exceptions_notify(struct notifier_block *self,
67 unsigned long val, void *data);
68
69enum kprobe_insn {
70 INSN_REJECTED,
71 INSN_GOOD,
72 INSN_GOOD_NO_SLOT
73};
74
75enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
76 struct arch_specific_insn *);
77void __init arm_kprobe_decode_init(void);
78
79#endif /* _ARM_KPROBES_H */