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 43