Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / tools / perf / arch / s390 / annotate / instructions.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/compiler.h>
3
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                 .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 (map_groups__find_ams(&target) == 0 &&
42             map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr)
43                 ops->target.sym = target.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);
50
51 static struct ins_ops s390_call_ops = {
52         .parse     = s390_call__parse,
53         .scnprintf = call__scnprintf,
54 };
55
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
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
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
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                         err = s390__cpuid_parse(arch, cpuid);
169         }
170
171         return err;
172 }