Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Irina Tirdea |
599 |
59.19% |
1 |
4.17% |
| Ian Rogers |
236 |
23.32% |
2 |
8.33% |
| Paran Lee |
36 |
3.56% |
1 |
4.17% |
| Ravi Bangoria |
33 |
3.26% |
1 |
4.17% |
| Arnaldo Carvalho de Melo |
24 |
2.37% |
8 |
33.33% |
| Eugeniy Paltsev |
22 |
2.17% |
1 |
4.17% |
| Elliott Hughes |
17 |
1.68% |
1 |
4.17% |
| Adrian Hunter |
15 |
1.48% |
1 |
4.17% |
| Namhyung Kim |
13 |
1.28% |
2 |
8.33% |
| Ingo Molnar |
6 |
0.59% |
1 |
4.17% |
| Thomas Richter |
4 |
0.40% |
1 |
4.17% |
| Kim Phillips |
2 |
0.20% |
1 |
4.17% |
| Martin Liška |
2 |
0.20% |
1 |
4.17% |
| Kan Liang |
2 |
0.20% |
1 |
4.17% |
| Greg Kroah-Hartman |
1 |
0.10% |
1 |
4.17% |
| Total |
1012 |
|
24 |
|
// SPDX-License-Identifier: GPL-2.0
#include "common.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/zalloc.h>
#include <unistd.h>
#include <dwarf-regs.h>
#include "../util/debug.h"
#include "../util/env.h"
static const char *const arc_triplets[] = {
"arc-linux-",
"arc-snps-linux-uclibc-",
"arc-snps-linux-gnu-",
NULL
};
static 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
};
static const char *const arm64_triplets[] = {
"aarch64-linux-android-",
"aarch64-linux-gnu-",
NULL
};
static const char *const powerpc_triplets[] = {
"powerpc-unknown-linux-gnu-",
"powerpc-linux-gnu-",
"powerpc64-unknown-linux-gnu-",
"powerpc64-linux-gnu-",
"powerpc64le-linux-gnu-",
NULL
};
static const char *const riscv32_triplets[] = {
"riscv32-unknown-linux-gnu-",
"riscv32-linux-android-",
"riscv32-linux-gnu-",
NULL
};
static const char *const riscv64_triplets[] = {
"riscv64-unknown-linux-gnu-",
"riscv64-linux-android-",
"riscv64-linux-gnu-",
NULL
};
static const char *const s390_triplets[] = {
"s390-ibm-linux-",
"s390x-linux-gnu-",
NULL
};
static const char *const sh_triplets[] = {
"sh-unknown-linux-gnu-",
"sh-linux-gnu-",
NULL
};
static const char *const sparc_triplets[] = {
"sparc-unknown-linux-gnu-",
"sparc64-unknown-linux-gnu-",
"sparc64-linux-gnu-",
NULL
};
static 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
};
static 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 bool is_native_compatible(struct perf_env *env, uint16_t target, uint16_t host)
{
if (target != host) {
/* A 64-bit host can natively disassemble its 32-bit compat architecture */
if (host == EM_X86_64 && target == EM_386)
return true;
if (host == EM_AARCH64 && target == EM_ARM)
return true;
if (host == EM_PPC64 && target == EM_PPC)
return true;
if (host == EM_SPARCV9 && target == EM_SPARC)
return true;
return false;
}
/* target == host case */
if (target == EM_RISCV) {
bool target_is_64 = perf_env__kernel_is_64_bit(env);
bool host_is_64 = (sizeof(void *) == 8);
/* 32-bit host cannot natively disassemble 64-bit target */
if (!host_is_64 && target_is_64)
return false;
}
return true;
}
static int perf_env__lookup_binutils_path(struct perf_env *env,
const char *name, char **path)
{
int idx;
uint16_t e_machine = perf_env__e_machine(env, /*e_flags=*/NULL);
const char *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 (is_native_compatible(env, e_machine, EM_HOST))
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);
}
switch (e_machine) {
case EM_ARC:
path_list = arc_triplets;
break;
case EM_ARM:
path_list = arm_triplets;
break;
case EM_AARCH64:
path_list = arm64_triplets;
break;
case EM_PPC:
case EM_PPC64:
path_list = powerpc_triplets;
break;
case EM_RISCV:
path_list = perf_env__kernel_is_64_bit(env) ? riscv64_triplets : riscv32_triplets;
break;
case EM_SH:
path_list = sh_triplets;
break;
case EM_S390:
path_list = s390_triplets;
break;
case EM_SPARC:
case EM_SPARCV9:
path_list = sparc_triplets;
break;
case EM_X86_64:
case EM_386:
path_list = x86_triplets;
break;
case EM_MIPS:
path_list = mips_triplets;
break;
default:
ui__error("binutils for %s not supported.\n", perf_env__arch(env));
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, perf_env__arch(env), 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)
{
uint16_t e_machine = perf_env__e_machine(env, /*e_flags=*/NULL);
return e_machine != EM_SPARC && e_machine != EM_SPARCV9 && e_machine != EM_S390;
}