arch/arm/include/asm/uprobes.h

   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