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1#include <stdio.h>
2#include <sys/utsname.h>
3#include "common.h"
4#include "../util/debug.h"
5
6const 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
15const char *const powerpc_triplets[] = {
16 "powerpc-unknown-linux-gnu-",
17 "powerpc64-unknown-linux-gnu-",
18 NULL
19};
20
21const char *const s390_triplets[] = {
22 "s390-ibm-linux-",
23 NULL
24};
25
26const char *const sh_triplets[] = {
27 "sh-unknown-linux-gnu-",
28 "sh64-unknown-linux-gnu-",
29 NULL
30};
31
32const char *const sparc_triplets[] = {
33 "sparc-unknown-linux-gnu-",
34 "sparc64-unknown-linux-gnu-",
35 NULL
36};
37
38const char *const x86_triplets[] = {
39 "x86_64-pc-linux-gnu-",
40 "x86_64-unknown-linux-gnu-",
41 "i686-pc-linux-gnu-",
42 "i586-pc-linux-gnu-",
43 "i486-pc-linux-gnu-",
44 "i386-pc-linux-gnu-",
45 "i686-linux-android-",
46 "i686-android-linux-",
47 NULL
48};
49
50const char *const mips_triplets[] = {
51 "mips-unknown-linux-gnu-",
52 "mipsel-linux-android-",
53 NULL
54};
55
56static bool lookup_path(char *name)
57{
58 bool found = false;
59 char *path, *tmp;
60 char buf[PATH_MAX];
61 char *env = getenv("PATH");
62
63 if (!env)
64 return false;
65
66 env = strdup(env);
67 if (!env)
68 return false;
69
70 path = strtok_r(env, ":", &tmp);
71 while (path) {
72 scnprintf(buf, sizeof(buf), "%s/%s", path, name);
73 if (access(buf, F_OK) == 0) {
74 found = true;
75 break;
76 }
77 path = strtok_r(NULL, ":", &tmp);
78 }
79 free(env);
80 return found;
81}
82
83static int lookup_triplets(const char *const *triplets, const char *name)
84{
85 int i;
86 char buf[PATH_MAX];
87
88 for (i = 0; triplets[i] != NULL; i++) {
89 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
90 if (lookup_path(buf))
91 return i;
92 }
93 return -1;
94}
95
96/*
97 * Return architecture name in a normalized form.
98 * The conversion logic comes from the Makefile.
99 */
100static const char *normalize_arch(char *arch)
101{
102 if (!strcmp(arch, "x86_64"))
103 return "x86";
104 if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
105 return "x86";
106 if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
107 return "sparc";
108 if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
109 return "arm";
110 if (!strncmp(arch, "s390", 4))
111 return "s390";
112 if (!strncmp(arch, "parisc", 6))
113 return "parisc";
114 if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
115 return "powerpc";
116 if (!strncmp(arch, "mips", 4))
117 return "mips";
118 if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
119 return "sh";
120
121 return arch;
122}
123
124static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
125 const char *name,
126 const char **path)
127{
128 int idx;
129 const char *arch, *cross_env;
130 struct utsname uts;
131 const char *const *path_list;
132 char *buf = NULL;
133
134 arch = normalize_arch(env->arch);
135
136 if (uname(&uts) < 0)
137 goto out;
138
139 /*
140 * We don't need to try to find objdump path for native system.
141 * Just use default binutils path (e.g.: "objdump").
142 */
143 if (!strcmp(normalize_arch(uts.machine), arch))
144 goto out;
145
146 cross_env = getenv("CROSS_COMPILE");
147 if (cross_env) {
148 if (asprintf(&buf, "%s%s", cross_env, name) < 0)
149 goto out_error;
150 if (buf[0] == '/') {
151 if (access(buf, F_OK) == 0)
152 goto out;
153 goto out_error;
154 }
155 if (lookup_path(buf))
156 goto out;
157 zfree(&buf);
158 }
159
160 if (!strcmp(arch, "arm"))
161 path_list = arm_triplets;
162 else if (!strcmp(arch, "powerpc"))
163 path_list = powerpc_triplets;
164 else if (!strcmp(arch, "sh"))
165 path_list = sh_triplets;
166 else if (!strcmp(arch, "s390"))
167 path_list = s390_triplets;
168 else if (!strcmp(arch, "sparc"))
169 path_list = sparc_triplets;
170 else if (!strcmp(arch, "x86"))
171 path_list = x86_triplets;
172 else if (!strcmp(arch, "mips"))
173 path_list = mips_triplets;
174 else {
175 ui__error("binutils for %s not supported.\n", arch);
176 goto out_error;
177 }
178
179 idx = lookup_triplets(path_list, name);
180 if (idx < 0) {
181 ui__error("Please install %s for %s.\n"
182 "You can add it to PATH, set CROSS_COMPILE or "
183 "override the default using --%s.\n",
184 name, arch, name);
185 goto out_error;
186 }
187
188 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
189 goto out_error;
190
191out:
192 *path = buf;
193 return 0;
194out_error:
195 free(buf);
196 *path = NULL;
197 return -1;
198}
199
200int perf_session_env__lookup_objdump(struct perf_session_env *env)
201{
202 /*
203 * For live mode, env->arch will be NULL and we can use
204 * the native objdump tool.
205 */
206 if (env->arch == NULL)
207 return 0;
208
209 return perf_session_env__lookup_binutils_path(env, "objdump",
210 &objdump_path);
211}
1// SPDX-License-Identifier: GPL-2.0
2#include <stdio.h>
3#include "common.h"
4#include "../util/env.h"
5#include "../util/util.h"
6#include "../util/debug.h"
7
8const char *const arm_triplets[] = {
9 "arm-eabi-",
10 "arm-linux-androideabi-",
11 "arm-unknown-linux-",
12 "arm-unknown-linux-gnu-",
13 "arm-unknown-linux-gnueabi-",
14 "arm-linux-gnu-",
15 "arm-linux-gnueabihf-",
16 "arm-none-eabi-",
17 NULL
18};
19
20const char *const arm64_triplets[] = {
21 "aarch64-linux-android-",
22 "aarch64-linux-gnu-",
23 NULL
24};
25
26const char *const powerpc_triplets[] = {
27 "powerpc-unknown-linux-gnu-",
28 "powerpc-linux-gnu-",
29 "powerpc64-unknown-linux-gnu-",
30 "powerpc64-linux-gnu-",
31 "powerpc64le-linux-gnu-",
32 NULL
33};
34
35const char *const s390_triplets[] = {
36 "s390-ibm-linux-",
37 "s390x-linux-gnu-",
38 NULL
39};
40
41const char *const sh_triplets[] = {
42 "sh-unknown-linux-gnu-",
43 "sh64-unknown-linux-gnu-",
44 "sh-linux-gnu-",
45 "sh64-linux-gnu-",
46 NULL
47};
48
49const char *const sparc_triplets[] = {
50 "sparc-unknown-linux-gnu-",
51 "sparc64-unknown-linux-gnu-",
52 "sparc64-linux-gnu-",
53 NULL
54};
55
56const char *const x86_triplets[] = {
57 "x86_64-pc-linux-gnu-",
58 "x86_64-unknown-linux-gnu-",
59 "i686-pc-linux-gnu-",
60 "i586-pc-linux-gnu-",
61 "i486-pc-linux-gnu-",
62 "i386-pc-linux-gnu-",
63 "i686-linux-android-",
64 "i686-android-linux-",
65 "x86_64-linux-gnu-",
66 "i586-linux-gnu-",
67 NULL
68};
69
70const char *const mips_triplets[] = {
71 "mips-unknown-linux-gnu-",
72 "mipsel-linux-android-",
73 "mips-linux-gnu-",
74 "mips64-linux-gnu-",
75 "mips64el-linux-gnuabi64-",
76 "mips64-linux-gnuabi64-",
77 "mipsel-linux-gnu-",
78 NULL
79};
80
81static bool lookup_path(char *name)
82{
83 bool found = false;
84 char *path, *tmp = NULL;
85 char buf[PATH_MAX];
86 char *env = getenv("PATH");
87
88 if (!env)
89 return false;
90
91 env = strdup(env);
92 if (!env)
93 return false;
94
95 path = strtok_r(env, ":", &tmp);
96 while (path) {
97 scnprintf(buf, sizeof(buf), "%s/%s", path, name);
98 if (access(buf, F_OK) == 0) {
99 found = true;
100 break;
101 }
102 path = strtok_r(NULL, ":", &tmp);
103 }
104 free(env);
105 return found;
106}
107
108static int lookup_triplets(const char *const *triplets, const char *name)
109{
110 int i;
111 char buf[PATH_MAX];
112
113 for (i = 0; triplets[i] != NULL; i++) {
114 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
115 if (lookup_path(buf))
116 return i;
117 }
118 return -1;
119}
120
121static int perf_env__lookup_binutils_path(struct perf_env *env,
122 const char *name, const char **path)
123{
124 int idx;
125 const char *arch = perf_env__arch(env), *cross_env;
126 const char *const *path_list;
127 char *buf = NULL;
128
129 /*
130 * We don't need to try to find objdump path for native system.
131 * Just use default binutils path (e.g.: "objdump").
132 */
133 if (!strcmp(perf_env__arch(NULL), arch))
134 goto out;
135
136 cross_env = getenv("CROSS_COMPILE");
137 if (cross_env) {
138 if (asprintf(&buf, "%s%s", cross_env, name) < 0)
139 goto out_error;
140 if (buf[0] == '/') {
141 if (access(buf, F_OK) == 0)
142 goto out;
143 goto out_error;
144 }
145 if (lookup_path(buf))
146 goto out;
147 zfree(&buf);
148 }
149
150 if (!strcmp(arch, "arm"))
151 path_list = arm_triplets;
152 else if (!strcmp(arch, "arm64"))
153 path_list = arm64_triplets;
154 else if (!strcmp(arch, "powerpc"))
155 path_list = powerpc_triplets;
156 else if (!strcmp(arch, "sh"))
157 path_list = sh_triplets;
158 else if (!strcmp(arch, "s390"))
159 path_list = s390_triplets;
160 else if (!strcmp(arch, "sparc"))
161 path_list = sparc_triplets;
162 else if (!strcmp(arch, "x86"))
163 path_list = x86_triplets;
164 else if (!strcmp(arch, "mips"))
165 path_list = mips_triplets;
166 else {
167 ui__error("binutils for %s not supported.\n", arch);
168 goto out_error;
169 }
170
171 idx = lookup_triplets(path_list, name);
172 if (idx < 0) {
173 ui__error("Please install %s for %s.\n"
174 "You can add it to PATH, set CROSS_COMPILE or "
175 "override the default using --%s.\n",
176 name, arch, name);
177 goto out_error;
178 }
179
180 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
181 goto out_error;
182
183out:
184 *path = buf;
185 return 0;
186out_error:
187 free(buf);
188 *path = NULL;
189 return -1;
190}
191
192int perf_env__lookup_objdump(struct perf_env *env)
193{
194 /*
195 * For live mode, env->arch will be NULL and we can use
196 * the native objdump tool.
197 */
198 if (env->arch == NULL)
199 return 0;
200
201 return perf_env__lookup_binutils_path(env, "objdump", &objdump_path);
202}