1 // SPDX-License-Identifier: GPL-2.0
2
3 static int is_branch_cond(const char *cond)
4 {
5 if (cond[0] == '\0')
6 return 1;
7
8 if (cond[0] == 'a' && cond[1] == '\0')
9 return 1;
10
11 if (cond[0] == 'c' &&
12 (cond[1] == 'c' || cond[1] == 's') &&
13 cond[2] == '\0')
14 return 1;
15
16 if (cond[0] == 'e' &&
17 (cond[1] == '\0' ||
18 (cond[1] == 'q' && cond[2] == '\0')))
19 return 1;
20
21 if (cond[0] == 'g' &&
22 (cond[1] == '\0' ||
23 (cond[1] == 't' && cond[2] == '\0') ||
24 (cond[1] == 'e' && cond[2] == '\0') ||
25 (cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))
26 return 1;
27
28 if (cond[0] == 'l' &&
29 (cond[1] == '\0' ||
30 (cond[1] == 't' && cond[2] == '\0') ||
31 (cond[1] == 'u' && cond[2] == '\0') ||
32 (cond[1] == 'e' && cond[2] == '\0') ||
33 (cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))
34 return 1;
35
36 if (cond[0] == 'n' &&
37 (cond[1] == '\0' ||
38 (cond[1] == 'e' && cond[2] == '\0') ||
39 (cond[1] == 'z' && cond[2] == '\0') ||
40 (cond[1] == 'e' && cond[2] == 'g' && cond[3] == '\0')))
41 return 1;
42
43 if (cond[0] == 'b' &&
44 cond[1] == 'p' &&
45 cond[2] == 'o' &&
46 cond[3] == 's' &&
47 cond[4] == '\0')
48 return 1;
49
50 if (cond[0] == 'v' &&
51 (cond[1] == 'c' || cond[1] == 's') &&
52 cond[2] == '\0')
53 return 1;
54
55 if (cond[0] == 'b' &&
56 cond[1] == 'z' &&
57 cond[2] == '\0')
58 return 1;
59
60 return 0;
61 }
62
63 static int is_branch_reg_cond(const char *cond)
64 {
65 if ((cond[0] == 'n' || cond[0] == 'l') &&
66 cond[1] == 'z' &&
67 cond[2] == '\0')
68 return 1;
69
70 if (cond[0] == 'z' &&
71 cond[1] == '\0')
72 return 1;
73
74 if ((cond[0] == 'g' || cond[0] == 'l') &&
75 cond[1] == 'e' &&
76 cond[2] == 'z' &&
77 cond[3] == '\0')
78 return 1;
79
80 if (cond[0] == 'g' &&
81 cond[1] == 'z' &&
82 cond[2] == '\0')
83 return 1;
84
85 return 0;
86 }
87
88 static int is_branch_float_cond(const char *cond)
89 {
90 if (cond[0] == '\0')
91 return 1;
92
93 if ((cond[0] == 'a' || cond[0] == 'e' ||
94 cond[0] == 'z' || cond[0] == 'g' ||
95 cond[0] == 'l' || cond[0] == 'n' ||
96 cond[0] == 'o' || cond[0] == 'u') &&
97 cond[1] == '\0')
98 return 1;
99
100 if (((cond[0] == 'g' && cond[1] == 'e') ||
101 (cond[0] == 'l' && (cond[1] == 'e' ||
102 cond[1] == 'g')) ||
103 (cond[0] == 'n' && (cond[1] == 'e' ||
104 cond[1] == 'z')) ||
105 (cond[0] == 'u' && (cond[1] == 'e' ||
106 cond[1] == 'g' ||
107 cond[1] == 'l'))) &&
108 cond[2] == '\0')
109 return 1;
110
111 if (cond[0] == 'u' &&
112 (cond[1] == 'g' || cond[1] == 'l') &&
113 cond[2] == 'e' &&
114 cond[3] == '\0')
115 return 1;
116
117 return 0;
118 }
119
120 static struct ins_ops *sparc__associate_instruction_ops(struct arch *arch, const char *name)
121 {
122 struct ins_ops *ops = NULL;
123
124 if (!strcmp(name, "call") ||
125 !strcmp(name, "jmp") ||
126 !strcmp(name, "jmpl")) {
127 ops = &call_ops;
128 } else if (!strcmp(name, "ret") ||
129 !strcmp(name, "retl") ||
130 !strcmp(name, "return")) {
131 ops = &ret_ops;
132 } else if (!strcmp(name, "mov")) {
133 ops = &mov_ops;
134 } else {
135 if (name[0] == 'c' &&
136 (name[1] == 'w' || name[1] == 'x'))
137 name += 2;
138
139 if (name[0] == 'b') {
140 const char *cond = name + 1;
141
142 if (cond[0] == 'r') {
143 if (is_branch_reg_cond(cond + 1))
144 ops = &jump_ops;
145 } else if (is_branch_cond(cond)) {
146 ops = &jump_ops;
147 }
148 } else if (name[0] == 'f' && name[1] == 'b') {
149 if (is_branch_float_cond(name + 2))
150 ops = &jump_ops;
151 }
152 }
153
154 if (ops)
155 arch__associate_ins_ops(arch, name, ops);
156
157 return ops;
158 }
159
160 static int sparc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
161 {
162 if (!arch->initialized) {
163 arch->initialized = true;
164 arch->associate_instruction_ops = sparc__associate_instruction_ops;
165 arch->objdump.comment_char = '#';
166 }
167
168 return 0;
169 }
170
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