1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2012 ARM Ltd.
4 */
5
6 #ifndef __ASM_BRK_IMM_H
7 #define __ASM_BRK_IMM_H
8
9 /*
10 * #imm16 values used for BRK instruction generation
11 * 0x004: for installing kprobes
12 * 0x005: for installing uprobes
13 * 0x006: for kprobe software single-step
14 * 0x007: for kretprobe return
15 * Allowed values for kgdb are 0x400 - 0x7ff
16 * 0x100: for triggering a fault on purpose (reserved)
17 * 0x400: for dynamic BRK instruction
18 * 0x401: for compile time BRK instruction
19 * 0x800: kernel-mode BUG() and WARN() traps
20 * 0x9xx: tag-based KASAN trap (allowed values 0x900 - 0x9ff)
21 * 0x55xx: Undefined Behavior Sanitizer traps ('U' << 8)
22 * 0x8xxx: Control-Flow Integrity traps
23 */
24 #define KPROBES_BRK_IMM 0x004
25 #define UPROBES_BRK_IMM 0x005
26 #define KPROBES_BRK_SS_IMM 0x006
27 #define KRETPROBES_BRK_IMM 0x007
28 #define FAULT_BRK_IMM 0x100
29 #define KGDB_DYN_DBG_BRK_IMM 0x400
30 #define KGDB_COMPILED_DBG_BRK_IMM 0x401
31 #define BUG_BRK_IMM 0x800
32 #define KASAN_BRK_IMM 0x900
33 #define KASAN_BRK_MASK 0x0ff
34 #define UBSAN_BRK_IMM 0x5500
35 #define UBSAN_BRK_MASK 0x00ff
36
37 #define CFI_BRK_IMM_TARGET GENMASK(4, 0)
38 #define CFI_BRK_IMM_TYPE GENMASK(9, 5)
39 #define CFI_BRK_IMM_BASE 0x8000
40 #define CFI_BRK_IMM_MASK (CFI_BRK_IMM_TARGET | CFI_BRK_IMM_TYPE)
41
42 #endif
43
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