| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2012 Rabin Vincent <rabin at rab.in> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 |