arch/arm64/include/asm/brk-imm.h

   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