1 // SPDX-License-Identifier: GPL-2.0 2 #include <stdio.h> 3 #include <stdlib.h> 4 #include "common.h" 5 #include "../util/env.h" 6 #include "../util/debug.h" 7 #include <linux/zalloc.h> 8 9 const char *const arc_triplets[] = { 10 "arc-linux-", 11 "arc-snps-linux-uclibc-", 12 "arc-snps-linux-gnu-", 13 NULL 14 }; 15 16 const char *const arm_triplets[] = { 17 "arm-eabi-", 18 "arm-linux-androideabi-", 19 "arm-unknown-linux-", 20 "arm-unknown-linux-gnu-", 21 "arm-unknown-linux-gnueabi-", 22 "arm-linux-gnu-", 23 "arm-linux-gnueabihf-", 24 "arm-none-eabi-", 25 NULL 26 }; 27 28 const char *const arm64_triplets[] = { 29 "aarch64-linux-android-", 30 "aarch64-linux-gnu-", 31 NULL 32 }; 33 34 const char *const powerpc_triplets[] = { 35 "powerpc-unknown-linux-gnu-", 36 "powerpc-linux-gnu-", 37 "powerpc64-unknown-linux-gnu-", 38 "powerpc64-linux-gnu-", 39 "powerpc64le-linux-gnu-", 40 NULL 41 }; 42 43 const char *const s390_triplets[] = { 44 "s390-ibm-linux-", 45 "s390x-linux-gnu-", 46 NULL 47 }; 48 49 const char *const sh_triplets[] = { 50 "sh-unknown-linux-gnu-", 51 "sh64-unknown-linux-gnu-", 52 "sh-linux-gnu-", 53 "sh64-linux-gnu-", 54 NULL 55 }; 56 57 const char *const sparc_triplets[] = { 58 "sparc-unknown-linux-gnu-", 59 "sparc64-unknown-linux-gnu-", 60 "sparc64-linux-gnu-", 61 NULL 62 }; 63 64 const char *const x86_triplets[] = { 65 "x86_64-pc-linux-gnu-", 66 "x86_64-unknown-linux-gnu-", 67 "i686-pc-linux-gnu-", 68 "i586-pc-linux-gnu-", 69 "i486-pc-linux-gnu-", 70 "i386-pc-linux-gnu-", 71 "i686-linux-android-", 72 "i686-android-linux-", 73 "x86_64-linux-gnu-", 74 "i586-linux-gnu-", 75 NULL 76 }; 77 78 const char *const mips_triplets[] = { 79 "mips-unknown-linux-gnu-", 80 "mipsel-linux-android-", 81 "mips-linux-gnu-", 82 "mips64-linux-gnu-", 83 "mips64el-linux-gnuabi64-", 84 "mips64-linux-gnuabi64-", 85 "mipsel-linux-gnu-", 86 NULL 87 }; 88 89 static bool lookup_path(char *name) 90 { 91 bool found = false; 92 char *path, *tmp = NULL; 93 char buf[PATH_MAX]; 94 char *env = getenv("PATH"); 95 96 if (!env) 97 return false; 98 99 env = strdup(env); 100 if (!env) 101 return false; 102 103 path = strtok_r(env, ":", &tmp); 104 while (path) { 105 scnprintf(buf, sizeof(buf), "%s/%s", path, name); 106 if (access(buf, F_OK) == 0) { 107 found = true; 108 break; 109 } 110 path = strtok_r(NULL, ":", &tmp); 111 } 112 free(env); 113 return found; 114 } 115 116 static int lookup_triplets(const char *const *triplets, const char *name) 117 { 118 int i; 119 char buf[PATH_MAX]; 120 121 for (i = 0; triplets[i] != NULL; i++) { 122 scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name); 123 if (lookup_path(buf)) 124 return i; 125 } 126 return -1; 127 } 128 129 static int perf_env__lookup_binutils_path(struct perf_env *env, 130 const char *name, const char **path) 131 { 132 int idx; 133 const char *arch = perf_env__arch(env), *cross_env; 134 const char *const *path_list; 135 char *buf = NULL; 136 137 /* 138 * We don't need to try to find objdump path for native system. 139 * Just use default binutils path (e.g.: "objdump"). 140 */ 141 if (!strcmp(perf_env__arch(NULL), arch)) 142 goto out; 143 144 cross_env = getenv("CROSS_COMPILE"); 145 if (cross_env) { 146 if (asprintf(&buf, "%s%s", cross_env, name) < 0) 147 goto out_error; 148 if (buf[0] == '/') { 149 if (access(buf, F_OK) == 0) 150 goto out; 151 goto out_error; 152 } 153 if (lookup_path(buf)) 154 goto out; 155 zfree(&buf); 156 } 157 158 if (!strcmp(arch, "arc")) 159 path_list = arc_triplets; 160 else if (!strcmp(arch, "arm")) 161 path_list = arm_triplets; 162 else if (!strcmp(arch, "arm64")) 163 path_list = arm64_triplets; 164 else if (!strcmp(arch, "powerpc")) 165 path_list = powerpc_triplets; 166 else if (!strcmp(arch, "sh")) 167 path_list = sh_triplets; 168 else if (!strcmp(arch, "s390")) 169 path_list = s390_triplets; 170 else if (!strcmp(arch, "sparc")) 171 path_list = sparc_triplets; 172 else if (!strcmp(arch, "x86")) 173 path_list = x86_triplets; 174 else if (!strcmp(arch, "mips")) 175 path_list = mips_triplets; 176 else { 177 ui__error("binutils for %s not supported.\n", arch); 178 goto out_error; 179 } 180 181 idx = lookup_triplets(path_list, name); 182 if (idx < 0) { 183 ui__error("Please install %s for %s.\n" 184 "You can add it to PATH, set CROSS_COMPILE or " 185 "override the default using --%s.\n", 186 name, arch, name); 187 goto out_error; 188 } 189 190 if (asprintf(&buf, "%s%s", path_list[idx], name) < 0) 191 goto out_error; 192 193 out: 194 *path = buf; 195 return 0; 196 out_error: 197 free(buf); 198 *path = NULL; 199 return -1; 200 } 201 202 int perf_env__lookup_objdump(struct perf_env *env, const char **path) 203 { 204 /* 205 * For live mode, env->arch will be NULL and we can use 206 * the native objdump tool. 207 */ 208 if (env->arch == NULL) 209 return 0; 210 211 return perf_env__lookup_binutils_path(env, "objdump", path); 212 } 213 214 /* 215 * Some architectures have a single address space for kernel and user addresses, 216 * which makes it possible to determine if an address is in kernel space or user 217 * space. 218 */ 219 bool perf_env__single_address_space(struct perf_env *env) 220 { 221 return strcmp(perf_env__arch(env), "sparc"); 222 } 223