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 46