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1 | /* |
2 | * Copyright (C) 2012 Rabin Vincent <rabin at rab.in> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #ifndef _ASM_UPROBES_H | |
10 | #define _ASM_UPROBES_H | |
11 | ||
12 | #include <asm/probes.h> | |
13 | #include <asm/opcodes.h> | |
14 | ||
15 | typedef u32 uprobe_opcode_t; | |
16 | ||
17 | #define MAX_UINSN_BYTES 4 | |
18 | #define UPROBE_XOL_SLOT_BYTES 64 | |
19 | ||
20 | #define UPROBE_SWBP_ARM_INSN 0xe7f001f9 | |
21 | #define UPROBE_SS_ARM_INSN 0xe7f001fa | |
22 | #define UPROBE_SWBP_INSN __opcode_to_mem_arm(UPROBE_SWBP_ARM_INSN) | |
23 | #define UPROBE_SWBP_INSN_SIZE 4 | |
24 | ||
25 | struct arch_uprobe_task { | |
26 | u32 backup; | |
27 | unsigned long saved_trap_no; | |
28 | }; | |
29 | ||
30 | struct arch_uprobe { | |
31 | u8 insn[MAX_UINSN_BYTES]; | |
32 | unsigned long ixol[2]; | |
33 | uprobe_opcode_t bpinsn; | |
34 | bool simulate; | |
35 | u32 pcreg; | |
36 | void (*prehandler)(struct arch_uprobe *auprobe, | |
37 | struct arch_uprobe_task *autask, | |
38 | struct pt_regs *regs); | |
39 | void (*posthandler)(struct arch_uprobe *auprobe, | |
40 | struct arch_uprobe_task *autask, | |
41 | struct pt_regs *regs); | |
42 | struct arch_probes_insn asi; | |
43 | }; | |
44 | ||
45 | #endif |