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