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