1/* SPDX-License-Identifier: GPL-2.0 */
2/* written by Philipp Rumpf, Copyright (C) 1999 SuSE GmbH Nuernberg
3** Copyright (C) 2000 Grant Grundler, Hewlett-Packard
4*/
5#ifndef _PARISC_PTRACE_H
6#define _PARISC_PTRACE_H
7
8#include <asm/assembly.h>
9#include <uapi/asm/ptrace.h>
10
11#define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS))
12
13#define arch_has_single_step()	1
14#define arch_has_block_step()	1
15
16/* XXX should we use iaoq[1] or iaoq[0] ? */
17#define user_mode(regs)			(((regs)->iaoq[0] & 3) != PRIV_KERNEL)
18#define user_space(regs)		((regs)->iasq[1] != PRIV_KERNEL)
19#define instruction_pointer(regs)	((regs)->iaoq[0] & ~3)
20#define user_stack_pointer(regs)	((regs)->gr[30])
21unsigned long profile_pc(struct pt_regs *);
22
23static inline unsigned long regs_return_value(struct pt_regs *regs)
24{
25	return regs->gr[28];
26}
27
28static inline void instruction_pointer_set(struct pt_regs *regs,
29						unsigned long val)
30{
31	regs->iaoq[0] = val;
32	regs->iaoq[1] = val + 4;
33}
34
35/* Query offset/name of register from its name/offset */
36extern int regs_query_register_offset(const char *name);
37extern const char *regs_query_register_name(unsigned int offset);
38#define MAX_REG_OFFSET (offsetof(struct pt_regs, ipsw))
39
40#define kernel_stack_pointer(regs) ((regs)->gr[30])
41
42static inline unsigned long regs_get_register(struct pt_regs *regs,
43					      unsigned int offset)
44{
45	if (unlikely(offset > MAX_REG_OFFSET))
46		return 0;
47	return *(unsigned long *)((unsigned long)regs + offset);
48}
49
50unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
51int regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr);
52
53#endif
54