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 12 const char *const arc_triplets[] = { 13 "arc-linux-", 14 "arc-snps-linux-uclibc-", 15 "arc-snps-linux-gnu-", 16 NULL 17 }; 18 19 const 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 31 const char *const arm64_triplets[] = { 32 "aarch64-linux-android-", 33 "aarch64-linux-gnu-", 34 NULL 35 }; 36 37 const 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 46 const char *const s390_triplets[] = { 47 "s390-ibm-linux-", 48 "s390x-linux-gnu-", 49 NULL 50 }; 51 52 const 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 60 const char *const sparc_triplets[] = { 61 "sparc-unknown-linux-gnu-", 62 "sparc64-unknown-linux-gnu-", 63 "sparc64-linux-gnu-", 64 NULL 65 }; 66 67 const 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 81 const 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 92 static 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 } 118 119 static 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 } 131 132 static 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; 195 196 out: 197 *path = buf; 198 return 0; 199 out_error: 200 free(buf); 201 *path = NULL; 202 return -1; 203 } 204 205 int 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 */ 222 bool perf_env__single_address_space(struct perf_env *env) 223 { 224 return strcmp(perf_env__arch(env), "sparc"); 225 } 226