1 #include <stdio.h>
2 #include <sys/utsname.h>
3 #include "common.h"
4 #include "../util/debug.h"
5
6 const char *const arm_triplets[] = {
7 "arm-eabi-",
8 "arm-linux-androideabi-",
9 "arm-unknown-linux-",
10 "arm-unknown-linux-gnu-",
11 "arm-unknown-linux-gnueabi-",
12 NULL
13 };
14
15 #if defined(ANDROID_PATCHES)
16 const char *const arm64_triplets[] = {
17 "aarch64-linux-android-",
18 NULL
19 };
20 #endif
21
22 const char *const powerpc_triplets[] = {
23 "powerpc-unknown-linux-gnu-",
24 "powerpc64-unknown-linux-gnu-",
25 NULL
26 };
27
28 const char *const s390_triplets[] = {
29 "s390-ibm-linux-",
30 NULL
31 };
32
33 const char *const sh_triplets[] = {
34 "sh-unknown-linux-gnu-",
35 "sh64-unknown-linux-gnu-",
36 NULL
37 };
38
39 const char *const sparc_triplets[] = {
40 "sparc-unknown-linux-gnu-",
41 "sparc64-unknown-linux-gnu-",
42 NULL
43 };
44
45 const char *const x86_triplets[] = {
46 "x86_64-pc-linux-gnu-",
47 "x86_64-unknown-linux-gnu-",
48 "i686-pc-linux-gnu-",
49 "i586-pc-linux-gnu-",
50 "i486-pc-linux-gnu-",
51 "i386-pc-linux-gnu-",
52 "i686-linux-android-",
53 "i686-android-linux-",
54 NULL
55 };
56
57 const char *const mips_triplets[] = {
58 "mips-unknown-linux-gnu-",
59 "mipsel-linux-android-",
60 NULL
61 };
62
lookup_path(char * name)63 static bool lookup_path(char *name)
64 {
65 bool found = false;
66 char *path, *tmp;
67 char buf[PATH_MAX];
68 char *env = getenv("PATH");
69
70 if (!env)
71 return false;
72
73 env = strdup(env);
74 if (!env)
75 return false;
76
77 path = strtok_r(env, ":", &tmp);
78 while (path) {
79 scnprintf(buf, sizeof(buf), "%s/%s", path, name);
80 if (access(buf, F_OK) == 0) {
81 found = true;
82 break;
83 }
84 path = strtok_r(NULL, ":", &tmp);
85 }
86 free(env);
87 return found;
88 }
89
lookup_triplets(const char * const * triplets,const char * name)90 static int lookup_triplets(const char *const *triplets, const char *name)
91 {
92 int i;
93 char buf[PATH_MAX];
94
95 for (i = 0; triplets[i] != NULL; i++) {
96 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
97 if (lookup_path(buf))
98 return i;
99 }
100 return -1;
101 }
102
103 /*
104 * Return architecture name in a normalized form.
105 * The conversion logic comes from the Makefile.
106 */
normalize_arch(char * arch)107 static const char *normalize_arch(char *arch)
108 {
109 if (!strcmp(arch, "x86_64"))
110 return "x86";
111 if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
112 return "x86";
113 if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
114 return "sparc";
115 #if defined(ANDROID_PATCHES)
116 if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
117 return "arm64";
118 #endif
119 if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
120 return "arm";
121 if (!strncmp(arch, "s390", 4))
122 return "s390";
123 if (!strncmp(arch, "parisc", 6))
124 return "parisc";
125 if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
126 return "powerpc";
127 if (!strncmp(arch, "mips", 4))
128 return "mips";
129 if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
130 return "sh";
131
132 return arch;
133 }
134
perf_session_env__lookup_binutils_path(struct perf_session_env * env,const char * name,const char ** path)135 static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
136 const char *name,
137 const char **path)
138 {
139 int idx;
140 const char *arch, *cross_env;
141 struct utsname uts;
142 const char *const *path_list;
143 char *buf = NULL;
144
145 arch = normalize_arch(env->arch);
146
147 if (uname(&uts) < 0)
148 goto out;
149
150 /*
151 * We don't need to try to find objdump path for native system.
152 * Just use default binutils path (e.g.: "objdump").
153 */
154 if (!strcmp(normalize_arch(uts.machine), arch))
155 goto out;
156
157 cross_env = getenv("CROSS_COMPILE");
158 if (cross_env) {
159 if (asprintf(&buf, "%s%s", cross_env, name) < 0)
160 goto out_error;
161 if (buf[0] == '/') {
162 if (access(buf, F_OK) == 0)
163 goto out;
164 goto out_error;
165 }
166 if (lookup_path(buf))
167 goto out;
168 free(buf);
169 buf = NULL;
170 }
171
172 if (!strcmp(arch, "arm"))
173 path_list = arm_triplets;
174 #if defined(ANDROID_PATCHES)
175 else if (!strcmp(arch, "arm64"))
176 path_list = arm64_triplets;
177 #endif
178 else if (!strcmp(arch, "powerpc"))
179 path_list = powerpc_triplets;
180 else if (!strcmp(arch, "sh"))
181 path_list = sh_triplets;
182 else if (!strcmp(arch, "s390"))
183 path_list = s390_triplets;
184 else if (!strcmp(arch, "sparc"))
185 path_list = sparc_triplets;
186 else if (!strcmp(arch, "x86"))
187 path_list = x86_triplets;
188 else if (!strcmp(arch, "mips"))
189 path_list = mips_triplets;
190 else {
191 ui__error("binutils for %s not supported.\n", arch);
192 goto out_error;
193 }
194
195 idx = lookup_triplets(path_list, name);
196 if (idx < 0) {
197 ui__error("Please install %s for %s.\n"
198 "You can add it to PATH, set CROSS_COMPILE or "
199 "override the default using --%s.\n",
200 name, arch, name);
201 goto out_error;
202 }
203
204 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
205 goto out_error;
206
207 out:
208 *path = buf;
209 return 0;
210 out_error:
211 free(buf);
212 *path = NULL;
213 return -1;
214 }
215
perf_session_env__lookup_objdump(struct perf_session_env * env)216 int perf_session_env__lookup_objdump(struct perf_session_env *env)
217 {
218 /*
219 * For live mode, env->arch will be NULL and we can use
220 * the native objdump tool.
221 */
222 if (env->arch == NULL)
223 return 0;
224
225 return perf_session_env__lookup_binutils_path(env, "objdump",
226 &objdump_path);
227 }
228