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// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <sys/utsname.h>
#include "common.h"
#include "../util/util.h"
#include "../util/debug.h"
#include "sane_ctype.h"
const char *const arm_triplets[] = {
"arm-eabi-",
"arm-linux-androideabi-",
"arm-unknown-linux-",
"arm-unknown-linux-gnu-",
"arm-unknown-linux-gnueabi-",
"arm-linux-gnu-",
"arm-linux-gnueabihf-",
"arm-none-eabi-",
NULL
};
const char *const arm64_triplets[] = {
"aarch64-linux-android-",
"aarch64-linux-gnu-",
NULL
};
const char *const powerpc_triplets[] = {
"powerpc-unknown-linux-gnu-",
"powerpc-linux-gnu-",
"powerpc64-unknown-linux-gnu-",
"powerpc64-linux-gnu-",
"powerpc64le-linux-gnu-",
NULL
};
const char *const s390_triplets[] = {
"s390-ibm-linux-",
"s390x-linux-gnu-",
NULL
};
const char *const sh_triplets[] = {
"sh-unknown-linux-gnu-",
"sh64-unknown-linux-gnu-",
"sh-linux-gnu-",
"sh64-linux-gnu-",
NULL
};
const char *const sparc_triplets[] = {
"sparc-unknown-linux-gnu-",
"sparc64-unknown-linux-gnu-",
"sparc64-linux-gnu-",
NULL
};
const char *const x86_triplets[] = {
"x86_64-pc-linux-gnu-",
"x86_64-unknown-linux-gnu-",
"i686-pc-linux-gnu-",
"i586-pc-linux-gnu-",
"i486-pc-linux-gnu-",
"i386-pc-linux-gnu-",
"i686-linux-android-",
"i686-android-linux-",
"x86_64-linux-gnu-",
"i586-linux-gnu-",
NULL
};
const char *const mips_triplets[] = {
"mips-unknown-linux-gnu-",
"mipsel-linux-android-",
"mips-linux-gnu-",
"mips64-linux-gnu-",
"mips64el-linux-gnuabi64-",
"mips64-linux-gnuabi64-",
"mipsel-linux-gnu-",
NULL
};
static bool lookup_path(char *name)
{
bool found = false;
char *path, *tmp = NULL;
char buf[PATH_MAX];
char *env = getenv("PATH");
if (!env)
return false;
env = strdup(env);
if (!env)
return false;
path = strtok_r(env, ":", &tmp);
while (path) {
scnprintf(buf, sizeof(buf), "%s/%s", path, name);
if (access(buf, F_OK) == 0) {
found = true;
break;
}
path = strtok_r(NULL, ":", &tmp);
}
free(env);
return found;
}
static int lookup_triplets(const char *const *triplets, const char *name)
{
int i;
char buf[PATH_MAX];
for (i = 0; triplets[i] != NULL; i++) {
scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
if (lookup_path(buf))
return i;
}
return -1;
}
/*
* Return architecture name in a normalized form.
* The conversion logic comes from the Makefile.
*/
const char *normalize_arch(char *arch)
{
if (!strcmp(arch, "x86_64"))
return "x86";
if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
return "x86";
if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
return "sparc";
if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
return "arm64";
if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
return "arm";
if (!strncmp(arch, "s390", 4))
return "s390";
if (!strncmp(arch, "parisc", 6))
return "parisc";
if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
return "powerpc";
if (!strncmp(arch, "mips", 4))
return "mips";
if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
return "sh";
return arch;
}
static int perf_env__lookup_binutils_path(struct perf_env *env,
const char *name, const char **path)
{
int idx;
const char *arch, *cross_env;
struct utsname uts;
const char *const *path_list;
char *buf = NULL;
arch = normalize_arch(env->arch);
if (uname(&uts) < 0)
goto out;
/*
* We don't need to try to find objdump path for native system.
* Just use default binutils path (e.g.: "objdump").
*/
if (!strcmp(normalize_arch(uts.machine), arch))
goto out;
cross_env = getenv("CROSS_COMPILE");
if (cross_env) {
if (asprintf(&buf, "%s%s", cross_env, name) < 0)
goto out_error;
if (buf[0] == '/') {
if (access(buf, F_OK) == 0)
goto out;
goto out_error;
}
if (lookup_path(buf))
goto out;
zfree(&buf);
}
if (!strcmp(arch, "arm"))
path_list = arm_triplets;
else if (!strcmp(arch, "arm64"))
path_list = arm64_triplets;
else if (!strcmp(arch, "powerpc"))
path_list = powerpc_triplets;
else if (!strcmp(arch, "sh"))
path_list = sh_triplets;
else if (!strcmp(arch, "s390"))
path_list = s390_triplets;
else if (!strcmp(arch, "sparc"))
path_list = sparc_triplets;
else if (!strcmp(arch, "x86"))
path_list = x86_triplets;
else if (!strcmp(arch, "mips"))
path_list = mips_triplets;
else {
ui__error("binutils for %s not supported.\n", arch);
goto out_error;
}
idx = lookup_triplets(path_list, name);
if (idx < 0) {
ui__error("Please install %s for %s.\n"
"You can add it to PATH, set CROSS_COMPILE or "
"override the default using --%s.\n",
name, arch, name);
goto out_error;
}
if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
goto out_error;
out:
*path = buf;
return 0;
out_error:
free(buf);
*path = NULL;
return -1;
}
int perf_env__lookup_objdump(struct perf_env *env)
{
/*
* For live mode, env->arch will be NULL and we can use
* the native objdump tool.
*/
if (env->arch == NULL)
return 0;
return perf_env__lookup_binutils_path(env, "objdump", &objdump_path);
}
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