1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/compiler.h>
3
s390_call__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms)4 static int s390_call__parse(struct arch *arch, struct ins_operands *ops,
5 struct map_symbol *ms)
6 {
7 char *endptr, *tok, *name;
8 struct map *map = ms->map;
9 struct addr_map_symbol target = {
10 .ms = { .map = map, },
11 };
12
13 tok = strchr(ops->raw, ',');
14 if (!tok)
15 return -1;
16
17 ops->target.addr = strtoull(tok + 1, &endptr, 16);
18
19 name = strchr(endptr, '<');
20 if (name == NULL)
21 return -1;
22
23 name++;
24
25 if (arch->objdump.skip_functions_char &&
26 strchr(name, arch->objdump.skip_functions_char))
27 return -1;
28
29 tok = strchr(name, '>');
30 if (tok == NULL)
31 return -1;
32
33 *tok = '\0';
34 ops->target.name = strdup(name);
35 *tok = '>';
36
37 if (ops->target.name == NULL)
38 return -1;
39 target.addr = map__objdump_2mem(map, ops->target.addr);
40
41 if (maps__find_ams(ms->maps, &target) == 0 &&
42 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
43 ops->target.sym = target.ms.sym;
44
45 return 0;
46 }
47
48 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
49 struct ins_operands *ops, int max_ins_name);
50
51 static struct ins_ops s390_call_ops = {
52 .parse = s390_call__parse,
53 .scnprintf = call__scnprintf,
54 };
55
s390_mov__parse(struct arch * arch __maybe_unused,struct ins_operands * ops,struct map_symbol * ms __maybe_unused)56 static int s390_mov__parse(struct arch *arch __maybe_unused,
57 struct ins_operands *ops,
58 struct map_symbol *ms __maybe_unused)
59 {
60 char *s = strchr(ops->raw, ','), *target, *endptr;
61
62 if (s == NULL)
63 return -1;
64
65 *s = '\0';
66 ops->source.raw = strdup(ops->raw);
67 *s = ',';
68
69 if (ops->source.raw == NULL)
70 return -1;
71
72 target = ++s;
73 ops->target.raw = strdup(target);
74 if (ops->target.raw == NULL)
75 goto out_free_source;
76
77 ops->target.addr = strtoull(target, &endptr, 16);
78 if (endptr == target)
79 goto out_free_target;
80
81 s = strchr(endptr, '<');
82 if (s == NULL)
83 goto out_free_target;
84 endptr = strchr(s + 1, '>');
85 if (endptr == NULL)
86 goto out_free_target;
87
88 *endptr = '\0';
89 ops->target.name = strdup(s + 1);
90 *endptr = '>';
91 if (ops->target.name == NULL)
92 goto out_free_target;
93
94 return 0;
95
96 out_free_target:
97 zfree(&ops->target.raw);
98 out_free_source:
99 zfree(&ops->source.raw);
100 return -1;
101 }
102
103
104 static struct ins_ops s390_mov_ops = {
105 .parse = s390_mov__parse,
106 .scnprintf = mov__scnprintf,
107 };
108
s390__associate_ins_ops(struct arch * arch,const char * name)109 static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *name)
110 {
111 struct ins_ops *ops = NULL;
112
113 /* catch all kind of jumps */
114 if (strchr(name, 'j') ||
115 !strncmp(name, "bct", 3) ||
116 !strncmp(name, "br", 2))
117 ops = &jump_ops;
118 /* override call/returns */
119 if (!strcmp(name, "bras") ||
120 !strcmp(name, "brasl") ||
121 !strcmp(name, "basr"))
122 ops = &s390_call_ops;
123 if (!strcmp(name, "br"))
124 ops = &ret_ops;
125 /* override load/store relative to PC */
126 if (!strcmp(name, "lrl") ||
127 !strcmp(name, "lgrl") ||
128 !strcmp(name, "lgfrl") ||
129 !strcmp(name, "llgfrl") ||
130 !strcmp(name, "strl") ||
131 !strcmp(name, "stgrl"))
132 ops = &s390_mov_ops;
133
134 if (ops)
135 arch__associate_ins_ops(arch, name, ops);
136 return ops;
137 }
138
s390__cpuid_parse(struct arch * arch,char * cpuid)139 static int s390__cpuid_parse(struct arch *arch, char *cpuid)
140 {
141 unsigned int family;
142 char model[16], model_c[16], cpumf_v[16], cpumf_a[16];
143 int ret;
144
145 /*
146 * cpuid string format:
147 * "IBM,family,model-capacity,model[,cpum_cf-version,cpum_cf-authorization]"
148 */
149 ret = sscanf(cpuid, "%*[^,],%u,%[^,],%[^,],%[^,],%s", &family, model_c,
150 model, cpumf_v, cpumf_a);
151 if (ret >= 2) {
152 arch->family = family;
153 arch->model = 0;
154 return 0;
155 }
156
157 return -1;
158 }
159
s390__annotate_init(struct arch * arch,char * cpuid __maybe_unused)160 static int s390__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
161 {
162 int err = 0;
163
164 if (!arch->initialized) {
165 arch->initialized = true;
166 arch->associate_instruction_ops = s390__associate_ins_ops;
167 if (cpuid) {
168 if (s390__cpuid_parse(arch, cpuid))
169 err = SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING;
170 }
171 }
172
173 return err;
174 }
175