License cleanup: add SPDX GPL-2.0 license identifier to files with no license
[linux-2.6-block.git] / tools / perf / arch / common.c
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b2441318 1// SPDX-License-Identifier: GPL-2.0
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2#include <stdio.h>
3#include <sys/utsname.h>
4#include "common.h"
175729fc 5#include "../util/util.h"
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6#include "../util/debug.h"
7
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8#include "sane_ctype.h"
9
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10const char *const arm_triplets[] = {
11 "arm-eabi-",
12 "arm-linux-androideabi-",
13 "arm-unknown-linux-",
14 "arm-unknown-linux-gnu-",
15 "arm-unknown-linux-gnueabi-",
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16 "arm-linux-gnu-",
17 "arm-linux-gnueabihf-",
18 "arm-none-eabi-",
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19 NULL
20};
21
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22const char *const arm64_triplets[] = {
23 "aarch64-linux-android-",
78f69b58 24 "aarch64-linux-gnu-",
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25 NULL
26};
27
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28const char *const powerpc_triplets[] = {
29 "powerpc-unknown-linux-gnu-",
6db47fde 30 "powerpc-linux-gnu-",
68e94f4e 31 "powerpc64-unknown-linux-gnu-",
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32 "powerpc64-linux-gnu-",
33 "powerpc64le-linux-gnu-",
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34 NULL
35};
36
37const char *const s390_triplets[] = {
38 "s390-ibm-linux-",
78f69b58 39 "s390x-linux-gnu-",
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40 NULL
41};
42
43const char *const sh_triplets[] = {
44 "sh-unknown-linux-gnu-",
45 "sh64-unknown-linux-gnu-",
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46 "sh-linux-gnu-",
47 "sh64-linux-gnu-",
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48 NULL
49};
50
51const char *const sparc_triplets[] = {
52 "sparc-unknown-linux-gnu-",
53 "sparc64-unknown-linux-gnu-",
78f69b58 54 "sparc64-linux-gnu-",
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55 NULL
56};
57
58const char *const x86_triplets[] = {
59 "x86_64-pc-linux-gnu-",
60 "x86_64-unknown-linux-gnu-",
61 "i686-pc-linux-gnu-",
62 "i586-pc-linux-gnu-",
63 "i486-pc-linux-gnu-",
64 "i386-pc-linux-gnu-",
65 "i686-linux-android-",
66 "i686-android-linux-",
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67 "x86_64-linux-gnu-",
68 "i586-linux-gnu-",
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69 NULL
70};
71
72const char *const mips_triplets[] = {
73 "mips-unknown-linux-gnu-",
74 "mipsel-linux-android-",
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75 "mips-linux-gnu-",
76 "mips64-linux-gnu-",
77 "mips64el-linux-gnuabi64-",
78 "mips64-linux-gnuabi64-",
79 "mipsel-linux-gnu-",
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80 NULL
81};
82
83static bool lookup_path(char *name)
84{
85 bool found = false;
5bcaaca3 86 char *path, *tmp = NULL;
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87 char buf[PATH_MAX];
88 char *env = getenv("PATH");
89
90 if (!env)
91 return false;
92
93 env = strdup(env);
94 if (!env)
95 return false;
96
97 path = strtok_r(env, ":", &tmp);
98 while (path) {
99 scnprintf(buf, sizeof(buf), "%s/%s", path, name);
100 if (access(buf, F_OK) == 0) {
101 found = true;
102 break;
103 }
104 path = strtok_r(NULL, ":", &tmp);
105 }
106 free(env);
107 return found;
108}
109
110static int lookup_triplets(const char *const *triplets, const char *name)
111{
112 int i;
113 char buf[PATH_MAX];
114
115 for (i = 0; triplets[i] != NULL; i++) {
116 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
117 if (lookup_path(buf))
118 return i;
119 }
120 return -1;
121}
122
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123/*
124 * Return architecture name in a normalized form.
125 * The conversion logic comes from the Makefile.
126 */
940e6987 127const char *normalize_arch(char *arch)
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128{
129 if (!strcmp(arch, "x86_64"))
130 return "x86";
131 if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
132 return "x86";
133 if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
134 return "sparc";
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135 if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
136 return "arm64";
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137 if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
138 return "arm";
139 if (!strncmp(arch, "s390", 4))
140 return "s390";
141 if (!strncmp(arch, "parisc", 6))
142 return "parisc";
143 if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
144 return "powerpc";
145 if (!strncmp(arch, "mips", 4))
146 return "mips";
147 if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
148 return "sh";
149
150 return arch;
151}
152
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153static int perf_env__lookup_binutils_path(struct perf_env *env,
154 const char *name, const char **path)
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155{
156 int idx;
48ed0ece 157 const char *arch, *cross_env;
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158 struct utsname uts;
159 const char *const *path_list;
160 char *buf = NULL;
161
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162 arch = normalize_arch(env->arch);
163
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164 if (uname(&uts) < 0)
165 goto out;
166
167 /*
168 * We don't need to try to find objdump path for native system.
169 * Just use default binutils path (e.g.: "objdump").
170 */
48ed0ece 171 if (!strcmp(normalize_arch(uts.machine), arch))
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172 goto out;
173
174 cross_env = getenv("CROSS_COMPILE");
175 if (cross_env) {
176 if (asprintf(&buf, "%s%s", cross_env, name) < 0)
177 goto out_error;
178 if (buf[0] == '/') {
179 if (access(buf, F_OK) == 0)
180 goto out;
181 goto out_error;
182 }
183 if (lookup_path(buf))
184 goto out;
04662523 185 zfree(&buf);
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186 }
187
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188 if (!strcmp(arch, "arm"))
189 path_list = arm_triplets;
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190 else if (!strcmp(arch, "arm64"))
191 path_list = arm64_triplets;
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192 else if (!strcmp(arch, "powerpc"))
193 path_list = powerpc_triplets;
194 else if (!strcmp(arch, "sh"))
195 path_list = sh_triplets;
196 else if (!strcmp(arch, "s390"))
197 path_list = s390_triplets;
198 else if (!strcmp(arch, "sparc"))
199 path_list = sparc_triplets;
48ed0ece 200 else if (!strcmp(arch, "x86"))
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201 path_list = x86_triplets;
202 else if (!strcmp(arch, "mips"))
203 path_list = mips_triplets;
204 else {
205 ui__error("binutils for %s not supported.\n", arch);
206 goto out_error;
207 }
208
209 idx = lookup_triplets(path_list, name);
210 if (idx < 0) {
211 ui__error("Please install %s for %s.\n"
212 "You can add it to PATH, set CROSS_COMPILE or "
213 "override the default using --%s.\n",
214 name, arch, name);
215 goto out_error;
216 }
217
218 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
219 goto out_error;
220
221out:
222 *path = buf;
223 return 0;
224out_error:
225 free(buf);
226 *path = NULL;
227 return -1;
228}
229
eebd0bfc 230int perf_env__lookup_objdump(struct perf_env *env)
68e94f4e 231{
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232 /*
233 * For live mode, env->arch will be NULL and we can use
234 * the native objdump tool.
235 */
236 if (env->arch == NULL)
237 return 0;
238
eebd0bfc 239 return perf_env__lookup_binutils_path(env, "objdump", &objdump_path);
68e94f4e 240}