1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright IBM Corp. 2008
5 *
6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
7 */
8
9#ifndef __ASM_PPC_DISASSEMBLE_H__
10#define __ASM_PPC_DISASSEMBLE_H__
11
12#include <linux/types.h>
13
14static inline unsigned int get_op(u32 inst)
15{
16	return inst >> 26;
17}
18
19static inline unsigned int get_xop(u32 inst)
20{
21	return (inst >> 1) & 0x3ff;
22}
23
24static inline unsigned int get_sprn(u32 inst)
25{
26	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
27}
28
29static inline unsigned int get_dcrn(u32 inst)
30{
31	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
32}
33
34static inline unsigned int get_tmrn(u32 inst)
35{
36	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
37}
38
39static inline unsigned int get_rt(u32 inst)
40{
41	return (inst >> 21) & 0x1f;
42}
43
44static inline unsigned int get_rs(u32 inst)
45{
46	return (inst >> 21) & 0x1f;
47}
48
49static inline unsigned int get_ra(u32 inst)
50{
51	return (inst >> 16) & 0x1f;
52}
53
54static inline unsigned int get_rb(u32 inst)
55{
56	return (inst >> 11) & 0x1f;
57}
58
59static inline unsigned int get_rc(u32 inst)
60{
61	return inst & 0x1;
62}
63
64static inline unsigned int get_ws(u32 inst)
65{
66	return (inst >> 11) & 0x1f;
67}
68
69static inline unsigned int get_d(u32 inst)
70{
71	return inst & 0xffff;
72}
73
74static inline unsigned int get_oc(u32 inst)
75{
76	return (inst >> 11) & 0x7fff;
77}
78
79static inline unsigned int get_tx_or_sx(u32 inst)
80{
81	return (inst) & 0x1;
82}
83
84#define IS_XFORM(inst)	(get_op(inst)  == 31)
85#define IS_DSFORM(inst)	(get_op(inst) >= 56)
86
87/*
88 * Create a DSISR value from the instruction
89 */
90static inline unsigned make_dsisr(unsigned instr)
91{
92	unsigned dsisr;
93
94
95	/* bits  6:15 --> 22:31 */
96	dsisr = (instr & 0x03ff0000) >> 16;
97
98	if (IS_XFORM(instr)) {
99		/* bits 29:30 --> 15:16 */
100		dsisr |= (instr & 0x00000006) << 14;
101		/* bit     25 -->    17 */
102		dsisr |= (instr & 0x00000040) << 8;
103		/* bits 21:24 --> 18:21 */
104		dsisr |= (instr & 0x00000780) << 3;
105	} else {
106		/* bit      5 -->    17 */
107		dsisr |= (instr & 0x04000000) >> 12;
108		/* bits  1: 4 --> 18:21 */
109		dsisr |= (instr & 0x78000000) >> 17;
110		/* bits 30:31 --> 12:13 */
111		if (IS_DSFORM(instr))
112			dsisr |= (instr & 0x00000003) << 18;
113	}
114
115	return dsisr;
116}
117#endif /* __ASM_PPC_DISASSEMBLE_H__ */
118