1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _MACHINE_GDB_MACHDEP_H_
30#define _MACHINE_GDB_MACHDEP_H_
31
32#ifdef BOOKE
33#define PPC_GDB_NREGS0 1
34#define PPC_GDB_NREGS4 (70 + 1)
35#define PPC_GDB_NREGS8 (1 + 32)
36#define PPC_GDB_NREGS16 0
37
38#else
39/*
40 * 0 - 32*GPR(4/8)
41 * 32 - 32*FPR(8)
42 * 64 - PC, PS (4/8)
43 * 66 - CR (4)
44 * 67 - LR, CTR (4/8)
45 * 69 - XER, FPSCR (4)
46 * 71 - 32*VR(16)
47 * 103 - VSCR, VRSAVE (4)
48 */
49
50#define PPC_REGNUM_R0 0
51#define PPC_REGNUM_R31 (PPC_REGNUM_R0 + 31)
52#define PPC_REGNUM_FR0 32
53#define PPC_REGNUM_FR31 (PPC_REGNUM_FR0 + 31)
54#define PPC_REGNUM_PC 64
55#define PPC_REGNUM_PS 65
56#define PPC_REGNUM_CR 66
57#define PPC_REGNUM_LR 67
58#define PPC_REGNUM_CTR 68
59#define PPC_REGNUM_XER 69
60#define PPC_REGNUM_FPSCR 70
61#define PPC_REGNUM_VR0 71
62#define PPC_REGNUM_VR31 (PPC_REGNUM_VR0 + 31)
63
64#define PPC_GDB_NREGS0 0
65
66#ifdef __powerpc64__
67#define PPC_GDB_NREGS4 5
68#define PPC_GDB_NREGS8 (64 + 4)
69#else
70#define PPC_GDB_NREGS4 (32 + 7 + 2)
71#define PPC_GDB_NREGS8 32
72#endif
73
74#define PPC_GDB_NREGS16 32
75#endif
76
77#define GDB_NREGS (PPC_GDB_NREGS0 + PPC_GDB_NREGS4 + \
78 PPC_GDB_NREGS8 + PPC_GDB_NREGS16)
79#define GDB_REG_PC 64
80
81#define GDB_BUFSZ (PPC_GDB_NREGS4 * 8 + \
82 PPC_GDB_NREGS8 * 16 + \
83 PPC_GDB_NREGS16 * 32)
84
85static __inline size_t
86gdb_cpu_regsz(int regnum)
87{
88
89#ifdef BOOKE
90 if (regnum == 70)
91 return (0);
92 if (regnum == 71 || regnum >= 73)
93 return (8);
94#else
95#ifdef __powerpc64__
96 if ((regnum >= PPC_REGNUM_R0 && regnum <= PPC_REGNUM_PS) ||
97 regnum == PPC_REGNUM_LR || regnum == PPC_REGNUM_CTR)
98 return (8);
99#else
100 if (regnum >= PPC_REGNUM_FR0 && regnum <= PPC_REGNUM_FR31)
101 return (8);
102#endif
103 if (regnum >= PPC_REGNUM_VR0 && regnum <= PPC_REGNUM_VR31)
104 return (16);
105#endif
106 return (4);
107}
108
109static __inline int
110gdb_cpu_query(void)
111{
112
113 return (0);
114}
115
116static __inline void *
117gdb_begin_write(void)
118{
119
120 return (NULL);
121}
122
123static __inline void
124gdb_end_write(void *arg __unused)
125{
126
127}
128
129static __inline void
130gdb_cpu_stop_reason(int type __unused, int code __unused)
131{
132
133}
134
135void *gdb_cpu_getreg(int, size_t *);
136void gdb_cpu_setreg(int, void *);
137int gdb_cpu_signal(int, int);
138void gdb_cpu_do_offsets(void);
139
140#endif /* !_MACHINE_GDB_MACHDEP_H_ */