1/*
2 * Copyright (c) 2017 Microsemi Corporation.
3 * Copyright (c) 2017 Padmarao Begari <Padmarao.Begari@microsemi.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9#ifndef __ASM_RISCV_PTRACE_H
10#define __ASM_RISCV_PTRACE_H
11
12struct pt_regs {
13	unsigned long sepc;
14	unsigned long ra;
15	unsigned long sp;
16	unsigned long gp;
17	unsigned long tp;
18	unsigned long t0;
19	unsigned long t1;
20	unsigned long t2;
21	unsigned long s0;
22	unsigned long s1;
23	unsigned long a0;
24	unsigned long a1;
25	unsigned long a2;
26	unsigned long a3;
27	unsigned long a4;
28	unsigned long a5;
29	unsigned long a6;
30	unsigned long a7;
31	unsigned long s2;
32	unsigned long s3;
33	unsigned long s4;
34	unsigned long s5;
35	unsigned long s6;
36	unsigned long s7;
37	unsigned long s8;
38	unsigned long s9;
39	unsigned long s10;
40	unsigned long s11;
41	unsigned long t3;
42	unsigned long t4;
43	unsigned long t5;
44	unsigned long t6;
45	/* Supervisor CSRs */
46	unsigned long sstatus;
47	unsigned long sbadaddr;
48	unsigned long scause;
49};
50
51#ifdef CONFIG_64BIT
52#define REG_FMT "%016lx"
53#else
54#define REG_FMT "%08lx"
55#endif
56
57#define user_mode(regs) (((regs)->sstatus & SR_PS) == 0)
58
59/* Helpers for working with the instruction pointer */
60#define GET_IP(regs) ((regs)->sepc)
61#define SET_IP(regs, val) (GET_IP(regs) = (val))
62
63static inline unsigned long instruction_pointer(struct pt_regs *regs)
64{
65	return GET_IP(regs);
66}
67
68static inline void instruction_pointer_set(struct pt_regs *regs, ulong val)
69{
70	SET_IP(regs, val);
71}
72
73#define profile_pc(regs) instruction_pointer(regs)
74
75/* Helpers for working with the user stack pointer */
76#define GET_USP(regs) ((regs)->sp)
77#define SET_USP(regs, val) (GET_USP(regs) = (val))
78
79static inline unsigned long user_stack_pointer(struct pt_regs *regs)
80{
81	return GET_USP(regs);
82}
83
84static inline void user_stack_pointer_set(struct pt_regs *regs, ulong val)
85{
86	SET_USP(regs, val);
87}
88
89/* Helpers for working with the frame pointer */
90#define GET_FP(regs) ((regs)->s0)
91#define SET_FP(regs, val) (GET_FP(regs) = (val))
92
93static inline unsigned long frame_pointer(struct pt_regs *regs)
94{
95	return GET_FP(regs);
96}
97
98static inline void frame_pointer_set(struct pt_regs *regs, ulong val)
99{
100	SET_FP(regs, val);
101}
102
103#endif /* __ASM_RISCV_PTRACE_H */
104