1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
#include <stdio.h>
#include <sys/utsname.h>
#include "common.h"
#include "../util/util.h"
#include "../util/debug.h"
#include "sane_ctype.h"
const char *const arm_triplets[] = {
"arm-eabi-",
"arm-linux-androideabi-",
"arm-unknown-linux-",
"arm-unknown-linux-gnu-",
"arm-unknown-linux-gnueabi-",
"arm-linux-gnu-",
"arm-linux-gnueabihf-",
"arm-none-eabi-",
NULL
};
const char *const arm64_triplets[] = {
"aarch64-linux-android-",
"aarch64-linux-gnu-",
NULL
};
const char *const powerpc_triplets[] = {
"powerpc-unknown-linux-gnu-",
"powerpc-linux-gnu-",
"powerpc64-unknown-linux-gnu-",
"powerpc64-linux-gnu-",
"powerpc64le-linux-gnu-",
NULL
};
const char *const s390_triplets[] = {
"s390-ibm-linux-",
"s390x-linux-gnu-",
NULL
};
const char *const sh_triplets[] = {
"sh-unknown-linux-gnu-",
"sh64-unknown-linux-gnu-",
"sh-linux-gnu-",
"sh64-linux-gnu-",
NULL
};
const char *const sparc_triplets[] = {
"sparc-unknown-linux-gnu-",
"sparc64-unknown-linux-gnu-",
"sparc64-linux-gnu-",
NULL
};
const char *const x86_triplets[] = {
"x86_64-pc-linux-gnu-",
"x86_64-unknown-linux-gnu-",
"i686-pc-linux-gnu-",
"i586-pc-linux-gnu-",
"i486-pc-linux-gnu-",
"i386-pc-linux-gnu-",
"i686-linux-android-",
"i686-android-linux-",
"x86_64-linux-gnu-",
"i586-linux-gnu-",
NULL
};
const char *const mips_triplets[] = {
"mips-unknown-linux-gnu-",
"mipsel-linux-android-",
"mips-linux-gnu-",
"mips64-linux-gnu-",
"mips64el-linux-gnuabi64-",
"mips64-linux-gnuabi64-",
"mipsel-linux-gnu-",
NULL
};
static bool lookup_path(char *name)
{
bool found = false;
char *path, *tmp = NULL;
char buf[PATH_MAX];
char *env = getenv("PATH");
if (!env)
return false;
env = strdup(env);
if (!env)
return false;
path = strtok_r(env, ":", &tmp);
while (path) {
scnprintf(buf, sizeof(buf), "%s/%s", path, name);
if (access(buf, F_OK) == 0) {
found = true;
break;
}
path = strtok_r(NULL, ":", &tmp);
}
free(env);
return found;
}
static int lookup_triplets(const char *const *triplets, const char *name)
{
int i;
char buf[PATH_MAX];
for (i = 0; triplets[i] != NULL; i++) {
scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
if (lookup_path(buf))
return i;
}
return -1;
}
/*
* Return architecture name in a normalized form.
* The conversion logic comes from the Makefile.
*/
const char *normalize_arch(char *arch)
{
if (!strcmp(arch, "x86_64"))
return "x86";
if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
return "x86";
if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
return "sparc";
if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
return "arm64";
if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
return "arm";
if (!strncmp(arch, "s390", 4))
return "s390";
if (!strncmp(arch, "parisc", 6))
return "parisc";
if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
return "powerpc";
if (!strncmp(arch, "mips", 4))
return "mips";
if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
return "sh";
return arch;
}
static int perf_env__lookup_binutils_path(struct perf_env *env,
const char *name, const char **path)
{
int idx;
const char *arch, *cross_env;
struct utsname uts;
const char *const *path_list;
char *buf = NULL;
arch = normalize_arch(env->arch);
if (uname(&uts) < 0)
goto out;
/*
* We don't need to try to find objdump path for native system.
* Just use default binutils path (e.g.: "objdump").
*/
if (!strcmp(normalize_arch(uts.machine), arch))
goto out;
cross_env = getenv("CROSS_COMPILE");
if (cross_env) {
if (asprintf(&buf, "%s%s", cross_env, name) < 0)
goto out_error;
if (buf[0] == '/') {
if (access(buf, F_OK) == 0)
goto out;
goto out_error;
}
if (lookup_path(buf))
goto out;
zfree(&buf);
}
if (!strcmp(arch, "arm"))
path_list = arm_triplets;
else if (!strcmp(arch, "arm64"))
path_list = arm64_triplets;
else if (!strcmp(arch, "powerpc"))
path_list = powerpc_triplets;
else if (!strcmp(arch, "sh"))
path_list = sh_triplets;
else if (!strcmp(arch, "s390"))
path_list = s390_triplets;
else if (!strcmp(arch, "sparc"))
path_list = sparc_triplets;
else if (!strcmp(arch, "x86"))
path_list = x86_triplets;
else if (!strcmp(arch, "mips"))
path_list = mips_triplets;
else {
ui__error("binutils for %s not supported.\n", arch);
goto out_error;
}
idx = lookup_triplets(path_list, name);
if (idx < 0) {
ui__error("Please install %s for %s.\n"
"You can add it to PATH, set CROSS_COMPILE or "
"override the default using --%s.\n",
name, arch, name);
goto out_error;
}
if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
goto out_error;
out:
*path = buf;
return 0;
out_error:
free(buf);
*path = NULL;
return -1;
}
int perf_env__lookup_objdump(struct perf_env *env)
{
/*
* For live mode, env->arch will be NULL and we can use
* the native objdump tool.
*/
if (env->arch == NULL)
return 0;
return perf_env__lookup_binutils_path(env, "objdump", &objdump_path);
}
|
