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 riscv32_triplets[] = { 47 "riscv32-unknown-linux-gnu-", 48 "riscv32-linux-android-", 49 "riscv32-linux-gnu-", 50 NULL 51 }; 52 53 const char *const riscv64_triplets[] = { 54 "riscv64-unknown-linux-gnu-", 55 "riscv64-linux-android-", 56 "riscv64-linux-gnu-", 57 NULL 58 }; 59 60 const char *const s390_triplets[] = { 61 "s390-ibm-linux-", 62 "s390x-linux-gnu-", 63 NULL 64 }; 65 66 const char *const sh_triplets[] = { 67 "sh-unknown-linux-gnu-", 68 "sh-linux-gnu-", 69 NULL 70 }; 71 72 const char *const sparc_triplets[] = { 73 "sparc-unknown-linux-gnu-", 74 "sparc64-unknown-linux-gnu-", 75 "sparc64-linux-gnu-", 76 NULL 77 }; 78 79 const char *const x86_triplets[] = { 80 "x86_64-pc-linux-gnu-", 81 "x86_64-unknown-linux-gnu-", 82 "i686-pc-linux-gnu-", 83 "i586-pc-linux-gnu-", 84 "i486-pc-linux-gnu-", 85 "i386-pc-linux-gnu-", 86 "i686-linux-android-", 87 "i686-android-linux-", 88 "x86_64-linux-gnu-", 89 "i586-linux-gnu-", 90 NULL 91 }; 92 93 const char *const mips_triplets[] = { 94 "mips-unknown-linux-gnu-", 95 "mipsel-linux-android-", 96 "mips-linux-gnu-", 97 "mips64-linux-gnu-", 98 "mips64el-linux-gnuabi64-", 99 "mips64-linux-gnuabi64-", 100 "mipsel-linux-gnu-", 101 NULL 102 }; 103 104 static bool lookup_path(char *name) 105 { 106 bool found = false; 107 char *path, *tmp = NULL; 108 char buf[PATH_MAX]; 109 char *env = getenv("PATH"); 110 111 if (!env) 112 return false; 113 114 env = strdup(env); 115 if (!env) 116 return false; 117 118 path = strtok_r(env, ":", &tmp); 119 while (path) { 120 scnprintf(buf, sizeof(buf), "%s/%s", path, name); 121 if (access(buf, F_OK) == 0) { 122 found = true; 123 break; 124 } 125 path = strtok_r(NULL, ":", &tmp); 126 } 127 free(env); 128 return found; 129 } 130 131 static int lookup_triplets(const char *const *triplets, const char *name) 132 { 133 int i; 134 char buf[PATH_MAX]; 135 136 for (i = 0; triplets[i] != NULL; i++) { 137 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name); 138 if (lookup_path(buf)) 139 return i; 140 } 141 return -1; 142 } 143 144 static int perf_env__lookup_binutils_path(struct perf_env *env, 145 const char *name, char **path) 146 { 147 int idx; 148 const char *arch = perf_env__arch(env), *cross_env; 149 const char *const *path_list; 150 char *buf = NULL; 151 152 /* 153 * We don't need to try to find objdump path for native system. 154 * Just use default binutils path (e.g.: "objdump"). 155 */ 156 if (!strcmp(perf_env__arch(NULL), arch)) 157 goto out; 158 159 cross_env = getenv("CROSS_COMPILE"); 160 if (cross_env) { 161 if (asprintf(&buf, "%s%s", cross_env, name) < 0) 162 goto out_error; 163 if (buf[0] == '/') { 164 if (access(buf, F_OK) == 0) 165 goto out; 166 goto out_error; 167 } 168 if (lookup_path(buf)) 169 goto out; 170 zfree(&buf); 171 } 172 173 if (!strcmp(arch, "arc")) 174 path_list = arc_triplets; 175 else if (!strcmp(arch, "arm")) 176 path_list = arm_triplets; 177 else if (!strcmp(arch, "arm64")) 178 path_list = arm64_triplets; 179 else if (!strcmp(arch, "powerpc")) 180 path_list = powerpc_triplets; 181 else if (!strcmp(arch, "riscv32")) 182 path_list = riscv32_triplets; 183 else if (!strcmp(arch, "riscv64")) 184 path_list = riscv64_triplets; 185 else if (!strcmp(arch, "sh")) 186 path_list = sh_triplets; 187 else if (!strcmp(arch, "s390")) 188 path_list = s390_triplets; 189 else if (!strcmp(arch, "sparc")) 190 path_list = sparc_triplets; 191 else if (!strcmp(arch, "x86")) 192 path_list = x86_triplets; 193 else if (!strcmp(arch, "mips")) 194 path_list = mips_triplets; 195 else { 196 ui__error("binutils for %s not supported.\n", arch); 197 goto out_error; 198 } 199 200 idx = lookup_triplets(path_list, name); 201 if (idx < 0) { 202 ui__error("Please install %s for %s.\n" 203 "You can add it to PATH, set CROSS_COMPILE or " 204 "override the default using --%s.\n", 205 name, arch, name); 206 goto out_error; 207 } 208 209 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0) 210 goto out_error; 211 212 out: 213 *path = buf; 214 return 0; 215 out_error: 216 free(buf); 217 *path = NULL; 218 return -1; 219 } 220 221 int perf_env__lookup_objdump(struct perf_env *env, char **path) 222 { 223 /* 224 * For live mode, env->arch will be NULL and we can use 225 * the native objdump tool. 226 */ 227 if (env->arch == NULL) 228 return 0; 229 230 return perf_env__lookup_binutils_path(env, "objdump", path); 231 } 232 233 /* 234 * Some architectures have a single address space for kernel and user addresses, 235 * which makes it possible to determine if an address is in kernel space or user 236 * space. 237 */ 238 bool perf_env__single_address_space(struct perf_env *env) 239 { 240 return strcmp(perf_env__arch(env), "sparc"); 241 } 242