This source file includes following definitions.
- reinstall_suspended_bps
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4
5 #ifndef __ASM_DEBUG_MONITORS_H
6 #define __ASM_DEBUG_MONITORS_H
7
8 #include <linux/errno.h>
9 #include <linux/types.h>
10 #include <asm/brk-imm.h>
11 #include <asm/esr.h>
12 #include <asm/insn.h>
13 #include <asm/ptrace.h>
14
15
16 #define DBG_MDSCR_SS (1 << 0)
17 #define DBG_SPSR_SS (1 << 21)
18
19
20 #define DBG_MDSCR_KDE (1 << 13)
21 #define DBG_MDSCR_MDE (1 << 15)
22 #define DBG_MDSCR_MASK ~(DBG_MDSCR_KDE | DBG_MDSCR_MDE)
23
24 #define DBG_ESR_EVT(x) (((x) >> 27) & 0x7)
25
26
27 #define DBG_ESR_EVT_HWBP 0x0
28 #define DBG_ESR_EVT_HWSS 0x1
29 #define DBG_ESR_EVT_HWWP 0x2
30 #define DBG_ESR_EVT_BRK 0x6
31
32
33
34
35 #define BREAK_INSTR_SIZE AARCH64_INSN_SIZE
36
37
38
39
40
41 #define AARCH64_BREAK_MON 0xd4200000
42
43
44
45
46
47 #define AARCH64_BREAK_FAULT (AARCH64_BREAK_MON | (FAULT_BRK_IMM << 5))
48
49 #define AARCH64_BREAK_KGDB_DYN_DBG \
50 (AARCH64_BREAK_MON | (KGDB_DYN_DBG_BRK_IMM << 5))
51
52 #define CACHE_FLUSH_IS_SAFE 1
53
54
55 #define BRK64_OPCODE_KPROBES (AARCH64_BREAK_MON | (KPROBES_BRK_IMM << 5))
56
57 #define BRK64_OPCODE_UPROBES (AARCH64_BREAK_MON | (UPROBES_BRK_IMM << 5))
58
59
60 #define DBG_ESR_EVT_BKPT 0x4
61 #define DBG_ESR_EVT_VECC 0x5
62
63 #define AARCH32_BREAK_ARM 0x07f001f0
64 #define AARCH32_BREAK_THUMB 0xde01
65 #define AARCH32_BREAK_THUMB2_LO 0xf7f0
66 #define AARCH32_BREAK_THUMB2_HI 0xa000
67
68 #ifndef __ASSEMBLY__
69 struct task_struct;
70
71 #define DBG_ARCH_ID_RESERVED 0
72
73 #define DBG_HOOK_HANDLED 0
74 #define DBG_HOOK_ERROR 1
75
76 struct step_hook {
77 struct list_head node;
78 int (*fn)(struct pt_regs *regs, unsigned int esr);
79 };
80
81 void register_user_step_hook(struct step_hook *hook);
82 void unregister_user_step_hook(struct step_hook *hook);
83
84 void register_kernel_step_hook(struct step_hook *hook);
85 void unregister_kernel_step_hook(struct step_hook *hook);
86
87 struct break_hook {
88 struct list_head node;
89 int (*fn)(struct pt_regs *regs, unsigned int esr);
90 u16 imm;
91 u16 mask;
92 };
93
94 void register_user_break_hook(struct break_hook *hook);
95 void unregister_user_break_hook(struct break_hook *hook);
96
97 void register_kernel_break_hook(struct break_hook *hook);
98 void unregister_kernel_break_hook(struct break_hook *hook);
99
100 u8 debug_monitors_arch(void);
101
102 enum dbg_active_el {
103 DBG_ACTIVE_EL0 = 0,
104 DBG_ACTIVE_EL1,
105 };
106
107 void enable_debug_monitors(enum dbg_active_el el);
108 void disable_debug_monitors(enum dbg_active_el el);
109
110 void user_rewind_single_step(struct task_struct *task);
111 void user_fastforward_single_step(struct task_struct *task);
112
113 void kernel_enable_single_step(struct pt_regs *regs);
114 void kernel_disable_single_step(void);
115 int kernel_active_single_step(void);
116
117 #ifdef CONFIG_HAVE_HW_BREAKPOINT
118 int reinstall_suspended_bps(struct pt_regs *regs);
119 #else
120 static inline int reinstall_suspended_bps(struct pt_regs *regs)
121 {
122 return -ENODEV;
123 }
124 #endif
125
126 int aarch32_break_handler(struct pt_regs *regs);
127
128 #endif
129 #endif