projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 35aa1df4 | 1 | /* |
| 4baa9922 | 2 | * arch/arm/include/asm/kprobes.h |
| 35aa1df4 QB |
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> | |
| 21254ebc | 21 | #include <linux/notifier.h> |
| 24ba613c | 22 | |
| 24ba613c AS |
23 | #define __ARCH_WANT_KPROBES_INSN_SLOT |
| 24 | #define MAX_INSN_SIZE 2 | |
| 24ba613c | 25 | |
| 24ba613c AS |
26 | #define flush_insn_slot(p) do { } while (0) |
| 27 | #define kretprobe_blacklist_size 0 | |
| 35aa1df4 QB |
28 | |
| 29 | typedef u32 kprobe_opcode_t; | |
| 35aa1df4 | 30 | struct kprobe; |
| b2531dd5 | 31 | #include <asm/probes.h> |
| 35aa1df4 | 32 | |
| b4cd605c DL |
33 | #define arch_specific_insn arch_probes_insn |
| 34 | ||
| 24ba613c AS |
35 | struct prev_kprobe { |
| 36 | struct kprobe *kp; | |
| 37 | unsigned int status; | |
| 38 | }; | |
| 39 | ||
| 40 | /* per-cpu kprobe control block */ | |
| 41 | struct kprobe_ctlblk { | |
| 42 | unsigned int kprobe_status; | |
| 43 | struct prev_kprobe prev_kprobe; | |
| 44 | struct pt_regs jprobe_saved_regs; | |
| 45 | char jprobes_stack[MAX_STACK_SIZE]; | |
| 46 | }; | |
| 47 | ||
| 48 | void arch_remove_kprobe(struct kprobe *); | |
| 24ba613c AS |
49 | int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr); |
| 50 | int kprobe_exceptions_notify(struct notifier_block *self, | |
| 51 | unsigned long val, void *data); | |
| 52 | ||
| 0dc016db WN |
53 | /* optinsn template addresses */ |
| 54 | extern __visible kprobe_opcode_t optprobe_template_entry; | |
| 55 | extern __visible kprobe_opcode_t optprobe_template_val; | |
| 56 | extern __visible kprobe_opcode_t optprobe_template_call; | |
| 57 | extern __visible kprobe_opcode_t optprobe_template_end; | |
| 58 | extern __visible kprobe_opcode_t optprobe_template_sub_sp; | |
| 59 | extern __visible kprobe_opcode_t optprobe_template_add_sp; | |
| bfc9657d WN |
60 | extern __visible kprobe_opcode_t optprobe_template_restore_begin; |
| 61 | extern __visible kprobe_opcode_t optprobe_template_restore_orig_insn; | |
| 62 | extern __visible kprobe_opcode_t optprobe_template_restore_end; | |
| 0dc016db WN |
63 | |
| 64 | #define MAX_OPTIMIZED_LENGTH 4 | |
| 65 | #define MAX_OPTINSN_SIZE \ | |
| 66 | ((unsigned long)&optprobe_template_end - \ | |
| 67 | (unsigned long)&optprobe_template_entry) | |
| 68 | #define RELATIVEJUMP_SIZE 4 | |
| 69 | ||
| 70 | struct arch_optimized_insn { | |
| 71 | /* | |
| 72 | * copy of the original instructions. | |
| 73 | * Different from x86, ARM kprobe_opcode_t is u32. | |
| 74 | */ | |
| 75 | #define MAX_COPIED_INSN DIV_ROUND_UP(RELATIVEJUMP_SIZE, sizeof(kprobe_opcode_t)) | |
| 76 | kprobe_opcode_t copied_insn[MAX_COPIED_INSN]; | |
| 77 | /* detour code buffer */ | |
| 78 | kprobe_opcode_t *insn; | |
| 79 | /* | |
| 80 | * We always copy one instruction on ARM, | |
| 81 | * so size will always be 4, and unlike x86, there is no | |
| 82 | * need for a size field. | |
| 83 | */ | |
| 84 | }; | |
| 35aa1df4 QB |
85 | |
| 86 | #endif /* _ARM_KPROBES_H */ |