// SPDX-License-Identifier: GPL-2.0
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "common.h"
#include "../util/env.h"
#include "../util/debug.h"
#include <linux/zalloc.h>
const char *const arc_triplets[] = {
"arc-linux-" ,
"arc-snps-linux-uclibc-" ,
"arc-snps-linux-gnu-" ,
NULL
};
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 riscv32_triplets[] = {
"riscv32-unknown-linux-gnu-" ,
"riscv32-linux-android-" ,
"riscv32-linux-gnu-" ,
NULL
};
const char *const riscv64_triplets[] = {
"riscv64-unknown-linux-gnu-" ,
"riscv64-linux-android-" ,
"riscv64-linux-gnu-" ,
NULL
};
const char *const s390_triplets[] = {
"s390-ibm-linux-" ,
"s390x-linux-gnu-" ,
NULL
};
const char *const sh_triplets[] = {
"sh-unknown-linux-gnu-" ,
"sh-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 ;
}
static int perf_env__lookup_binutils_path(struct perf_env *env,
const char *name, char **path)
{
int idx;
const char *arch = perf_env__arch(env), *cross_env;
const char *const *path_list;
char *buf = NULL;
/*
* We don ' t need to try to find objdump path for native system .
* Just use default binutils path ( e . g . : " objdump " ) .
*/
if (!strcmp(perf_env__arch(NULL), 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, "arc" ))
path_list = arc_triplets;
else 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, "riscv32" ))
path_list = riscv32_triplets;
else if (!strcmp(arch, "riscv64" ))
path_list = riscv64_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, char **path)
{
/*
* 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" , path);
}
/*
* Some architectures have a single address space for kernel and user addresses ,
* which makes it possible to determine if an address is in kernel space or user
* space .
*/
bool perf_env__single_address_space(struct perf_env *env)
{
return strcmp(perf_env__arch(env), "sparc" );
}
Messung V0.5 in Prozent C=99 H=85 G=92
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-10-11)
¤
*© Formatika GbR, Deutschland