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])
21 unsigned long profile_pc(struct pt_regs *);
22
23 static inline unsigned long regs_return_value(struct pt_regs *regs)
24 {
25 return regs->gr[28];
26 }
27
28 static 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 */
36 extern int regs_query_register_offset(const char *name);
37 extern 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
42 static 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
50 unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
51 int regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr);
52
53 #endif
54
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