1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  * Ptrace definitions for the Hexagon architecture
4  *
5  * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 and
9  * only version 2 as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19  * 02110-1301, USA.
20  */
21 
22 #ifndef _ASM_PTRACE_H
23 #define _ASM_PTRACE_H
24 
25 #include <asm/registers.h>
26 
27 #define instruction_pointer(regs) pt_elr(regs)
28 #define user_stack_pointer(regs) ((regs)->r29)
29 
30 #define profile_pc(regs) instruction_pointer(regs)
31 
32 /* kprobe-based event tracer support */
33 extern int regs_query_register_offset(const char *name);
34 extern const char *regs_query_register_name(unsigned int offset);
35 
36 #define current_pt_regs() \
37 	((struct pt_regs *) \
38 	 ((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
39 
40 #if CONFIG_HEXAGON_ARCH_VERSION >= 4
41 #define arch_has_single_step()	(1)
42 #endif
43 
44 
45 #endif
46