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 8 const 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 20 const char *const arm64_triplets[] = { 21 "aarch64-linux-android-", 22 "aarch64-linux-gnu-", 23 NULL 24 }; 25 26 const 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 35 const char *const s390_triplets[] = { 36 "s390-ibm-linux-", 37 "s390x-linux-gnu-", 38 NULL 39 }; 40 41 const 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 49 const char *const sparc_triplets[] = { 50 "sparc-unknown-linux-gnu-", 51 "sparc64-unknown-linux-gnu-", 52 "sparc64-linux-gnu-", 53 NULL 54 }; 55 56 const 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 70 const 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 81 static 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 } 107 108 static 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 } 120 121 static 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; 182 183 out: 184 *path = buf; 185 return 0; 186 out_error: 187 free(buf); 188 *path = NULL; 189 return -1; 190 } 191 192 int 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 } 203