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
12 struct 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
instruction_pointer(struct pt_regs * regs)63 static inline unsigned long instruction_pointer(struct pt_regs *regs)
64 {
65 return GET_IP(regs);
66 }
67
instruction_pointer_set(struct pt_regs * regs,ulong val)68 static 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
user_stack_pointer(struct pt_regs * regs)79 static inline unsigned long user_stack_pointer(struct pt_regs *regs)
80 {
81 return GET_USP(regs);
82 }
83
user_stack_pointer_set(struct pt_regs * regs,ulong val)84 static 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
frame_pointer(struct pt_regs * regs)93 static inline unsigned long frame_pointer(struct pt_regs *regs)
94 {
95 return GET_FP(regs);
96 }
97
frame_pointer_set(struct pt_regs * regs,ulong val)98 static 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