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
14 static inline unsigned int get_op(u32 inst)
15 {
16 return inst >> 26;
17 }
18
19 static inline unsigned int get_xop(u32 inst)
20 {
21 return (inst >> 1) & 0x3ff;
22 }
23
24 static inline unsigned int get_sprn(u32 inst)
25 {
26 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
27 }
28
29 static inline unsigned int get_dcrn(u32 inst)
30 {
31 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
32 }
33
34 static inline unsigned int get_tmrn(u32 inst)
35 {
36 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
37 }
38
39 static inline unsigned int get_rt(u32 inst)
40 {
41 return (inst >> 21) & 0x1f;
42 }
43
44 static inline unsigned int get_rs(u32 inst)
45 {
46 return (inst >> 21) & 0x1f;
47 }
48
49 static inline unsigned int get_ra(u32 inst)
50 {
51 return (inst >> 16) & 0x1f;
52 }
53
54 static inline unsigned int get_rb(u32 inst)
55 {
56 return (inst >> 11) & 0x1f;
57 }
58
59 static inline unsigned int get_rc(u32 inst)
60 {
61 return inst & 0x1;
62 }
63
64 static inline unsigned int get_ws(u32 inst)
65 {
66 return (inst >> 11) & 0x1f;
67 }
68
69 static inline unsigned int get_d(u32 inst)
70 {
71 return inst & 0xffff;
72 }
73
74 static inline unsigned int get_oc(u32 inst)
75 {
76 return (inst >> 11) & 0x7fff;
77 }
78
79 static 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 */
90 static 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
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