242 lines · c
1// SPDX-License-Identifier: GPL-2.02#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 12const char *const arc_triplets[] = {13 "arc-linux-",14 "arc-snps-linux-uclibc-",15 "arc-snps-linux-gnu-",16 NULL17};18 19const 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 NULL29};30 31const char *const arm64_triplets[] = {32 "aarch64-linux-android-",33 "aarch64-linux-gnu-",34 NULL35};36 37const 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 NULL44};45 46const char *const riscv32_triplets[] = {47 "riscv32-unknown-linux-gnu-",48 "riscv32-linux-android-",49 "riscv32-linux-gnu-",50 NULL51};52 53const char *const riscv64_triplets[] = {54 "riscv64-unknown-linux-gnu-",55 "riscv64-linux-android-",56 "riscv64-linux-gnu-",57 NULL58};59 60const char *const s390_triplets[] = {61 "s390-ibm-linux-",62 "s390x-linux-gnu-",63 NULL64};65 66const char *const sh_triplets[] = {67 "sh-unknown-linux-gnu-",68 "sh-linux-gnu-",69 NULL70};71 72const char *const sparc_triplets[] = {73 "sparc-unknown-linux-gnu-",74 "sparc64-unknown-linux-gnu-",75 "sparc64-linux-gnu-",76 NULL77};78 79const 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 NULL91};92 93const 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 NULL102};103 104static 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 131static 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 144static 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 212out:213 *path = buf;214 return 0;215out_error:216 free(buf);217 *path = NULL;218 return -1;219}220 221int perf_env__lookup_objdump(struct perf_env *env, char **path)222{223 /*224 * For live mode, env->arch will be NULL and we can use225 * 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 user236 * space.237 */238bool perf_env__single_address_space(struct perf_env *env)239{240 return strcmp(perf_env__arch(env), "sparc");241}242