arch/arm/include/asm/uprobes.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2012 Rabin Vincent <rabin at rab.in>
   4  */
   5
   6 #ifndef _ASM_UPROBES_H
   7 #define _ASM_UPROBES_H
   8
   9 #include <asm/probes.h>
  10 #include <asm/opcodes.h>
  11
  12 typedef u32 uprobe_opcode_t;
  13
  14 #define MAX_UINSN_BYTES         4
  15 #define UPROBE_XOL_SLOT_BYTES   64
  16
  17 #define UPROBE_SWBP_ARM_INSN    0xe7f001f9
  18 #define UPROBE_SS_ARM_INSN      0xe7f001fa
  19 #define UPROBE_SWBP_INSN        __opcode_to_mem_arm(UPROBE_SWBP_ARM_INSN)
  20 #define UPROBE_SWBP_INSN_SIZE   4
  21
  22 struct arch_uprobe_task {
  23         u32 backup;
  24         unsigned long   saved_trap_no;
  25 };
  26
  27 struct arch_uprobe {
  28         u8 insn[MAX_UINSN_BYTES];
  29         unsigned long ixol[2];
  30         uprobe_opcode_t bpinsn;
  31         bool simulate;
  32         u32 pcreg;
  33         void (*prehandler)(struct arch_uprobe *auprobe,
  34                            struct arch_uprobe_task *autask,
  35                            struct pt_regs *regs);
  36         void (*posthandler)(struct arch_uprobe *auprobe,
  37                             struct arch_uprobe_task *autask,
  38                             struct pt_regs *regs);
  39         struct arch_probes_insn asi;
  40 };
  41
  42 #endif