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1// SPDX-License-Identifier: GPL-2.0
2#include <limits.h>
3#include <stdio.h>
4#include <stdlib.h>
5#include <string.h>
6#include <unistd.h>
7#include "common.h"
8#include "../util/env.h"
9#include "../util/debug.h"
10#include <linux/zalloc.h>
11
12const char *const arc_triplets[] = {
13 "arc-linux-",
14 "arc-snps-linux-uclibc-",
15 "arc-snps-linux-gnu-",
16 NULL
17};
18
19const char *const arm_triplets[] = {
20 "arm-eabi-",
21 "arm-linux-androideabi-",
22 "arm-unknown-linux-",
23 "arm-unknown-linux-gnu-",
24 "arm-unknown-linux-gnueabi-",
25 "arm-linux-gnu-",
26 "arm-linux-gnueabihf-",
27 "arm-none-eabi-",
28 NULL
29};
30
31const char *const arm64_triplets[] = {
32 "aarch64-linux-android-",
33 "aarch64-linux-gnu-",
34 NULL
35};
36
37const char *const powerpc_triplets[] = {
38 "powerpc-unknown-linux-gnu-",
39 "powerpc-linux-gnu-",
40 "powerpc64-unknown-linux-gnu-",
41 "powerpc64-linux-gnu-",
42 "powerpc64le-linux-gnu-",
43 NULL
44};
45
46const char *const s390_triplets[] = {
47 "s390-ibm-linux-",
48 "s390x-linux-gnu-",
49 NULL
50};
51
52const char *const sh_triplets[] = {
53 "sh-unknown-linux-gnu-",
54 "sh64-unknown-linux-gnu-",
55 "sh-linux-gnu-",
56 "sh64-linux-gnu-",
57 NULL
58};
59
60const char *const sparc_triplets[] = {
61 "sparc-unknown-linux-gnu-",
62 "sparc64-unknown-linux-gnu-",
63 "sparc64-linux-gnu-",
64 NULL
65};
66
67const char *const x86_triplets[] = {
68 "x86_64-pc-linux-gnu-",
69 "x86_64-unknown-linux-gnu-",
70 "i686-pc-linux-gnu-",
71 "i586-pc-linux-gnu-",
72 "i486-pc-linux-gnu-",
73 "i386-pc-linux-gnu-",
74 "i686-linux-android-",
75 "i686-android-linux-",
76 "x86_64-linux-gnu-",
77 "i586-linux-gnu-",
78 NULL
79};
80
81const char *const mips_triplets[] = {
82 "mips-unknown-linux-gnu-",
83 "mipsel-linux-android-",
84 "mips-linux-gnu-",
85 "mips64-linux-gnu-",
86 "mips64el-linux-gnuabi64-",
87 "mips64-linux-gnuabi64-",
88 "mipsel-linux-gnu-",
89 NULL
90};
91
92static bool lookup_path(char *name)
93{
94 bool found = false;
95 char *path, *tmp = NULL;
96 char buf[PATH_MAX];
97 char *env = getenv("PATH");
98
99 if (!env)
100 return false;
101
102 env = strdup(env);
103 if (!env)
104 return false;
105
106 path = strtok_r(env, ":", &tmp);
107 while (path) {
108 scnprintf(buf, sizeof(buf), "%s/%s", path, name);
109 if (access(buf, F_OK) == 0) {
110 found = true;
111 break;
112 }
113 path = strtok_r(NULL, ":", &tmp);
114 }
115 free(env);
116 return found;
117}
118
119static int lookup_triplets(const char *const *triplets, const char *name)
120{
121 int i;
122 char buf[PATH_MAX];
123
124 for (i = 0; triplets[i] != NULL; i++) {
125 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
126 if (lookup_path(buf))
127 return i;
128 }
129 return -1;
130}
131
132static int perf_env__lookup_binutils_path(struct perf_env *env,
133 const char *name, const char **path)
134{
135 int idx;
136 const char *arch = perf_env__arch(env), *cross_env;
137 const char *const *path_list;
138 char *buf = NULL;
139
140 /*
141 * We don't need to try to find objdump path for native system.
142 * Just use default binutils path (e.g.: "objdump").
143 */
144 if (!strcmp(perf_env__arch(NULL), arch))
145 goto out;
146
147 cross_env = getenv("CROSS_COMPILE");
148 if (cross_env) {
149 if (asprintf(&buf, "%s%s", cross_env, name) < 0)
150 goto out_error;
151 if (buf[0] == '/') {
152 if (access(buf, F_OK) == 0)
153 goto out;
154 goto out_error;
155 }
156 if (lookup_path(buf))
157 goto out;
158 zfree(&buf);
159 }
160
161 if (!strcmp(arch, "arc"))
162 path_list = arc_triplets;
163 else if (!strcmp(arch, "arm"))
164 path_list = arm_triplets;
165 else if (!strcmp(arch, "arm64"))
166 path_list = arm64_triplets;
167 else if (!strcmp(arch, "powerpc"))
168 path_list = powerpc_triplets;
169 else if (!strcmp(arch, "sh"))
170 path_list = sh_triplets;
171 else if (!strcmp(arch, "s390"))
172 path_list = s390_triplets;
173 else if (!strcmp(arch, "sparc"))
174 path_list = sparc_triplets;
175 else if (!strcmp(arch, "x86"))
176 path_list = x86_triplets;
177 else if (!strcmp(arch, "mips"))
178 path_list = mips_triplets;
179 else {
180 ui__error("binutils for %s not supported.\n", arch);
181 goto out_error;
182 }
183
184 idx = lookup_triplets(path_list, name);
185 if (idx < 0) {
186 ui__error("Please install %s for %s.\n"
187 "You can add it to PATH, set CROSS_COMPILE or "
188 "override the default using --%s.\n",
189 name, arch, name);
190 goto out_error;
191 }
192
193 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
194 goto out_error;
195
196out:
197 *path = buf;
198 return 0;
199out_error:
200 free(buf);
201 *path = NULL;
202 return -1;
203}
204
205int perf_env__lookup_objdump(struct perf_env *env, const char **path)
206{
207 /*
208 * For live mode, env->arch will be NULL and we can use
209 * the native objdump tool.
210 */
211 if (env->arch == NULL)
212 return 0;
213
214 return perf_env__lookup_binutils_path(env, "objdump", path);
215}
216
217/*
218 * Some architectures have a single address space for kernel and user addresses,
219 * which makes it possible to determine if an address is in kernel space or user
220 * space.
221 */
222bool perf_env__single_address_space(struct perf_env *env)
223{
224 return strcmp(perf_env__arch(env), "sparc");
225}
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}