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perf arch common: Use perf_env e_machine rather than arch

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Use the e_machine rather than arch string matching.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Honglei Wang <jameshongleiwang@126.com>
Cc: Jan Polensky <japo@linux.ibm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2026-06-02 08:25:07 -07:00 committed by Arnaldo Carvalho de Melo
parent 0158eb0d12
commit 82ed70f00c
1 changed files with 70 additions and 24 deletions
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94
tools/perf/arch/common.c
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@ -1,13 +1,18 @@
// SPDX-License-Identifier: GPL-2.0
#include "common.h"
#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>
#include <unistd.h>
#include <dwarf-regs.h>
#include "../util/debug.h"
#include "../util/env.h"
static const char *const arc_triplets[] = {
"arc-linux-",
@ -141,11 +146,40 @@ static int lookup_triplets(const char *const *triplets, const char *name)
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;
const char *arch = perf_env__arch(env), *cross_env;
uint16_t e_machine = perf_env__e_machine(env, /*e_flags=*/NULL);
const char *cross_env;
const char *const *path_list;
char *buf = NULL;
@ -153,7 +187,7 @@ static int perf_env__lookup_binutils_path(struct perf_env *env,
* 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))
if (is_native_compatible(env, e_machine, EM_HOST))
goto out;
cross_env = getenv("CROSS_COMPILE");
@ -170,30 +204,42 @@ static int perf_env__lookup_binutils_path(struct perf_env *env,
zfree(&buf);
}
if (!strcmp(arch, "arc"))
switch (e_machine) {
case EM_ARC:
path_list = arc_triplets;
else if (!strcmp(arch, "arm"))
break;
case EM_ARM:
path_list = arm_triplets;
else if (!strcmp(arch, "arm64"))
break;
case EM_AARCH64:
path_list = arm64_triplets;
else if (!strcmp(arch, "powerpc"))
break;
case EM_PPC:
case EM_PPC64:
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"))
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;
else if (!strcmp(arch, "s390"))
break;
case EM_S390:
path_list = s390_triplets;
else if (!strcmp(arch, "sparc"))
break;
case EM_SPARC:
case EM_SPARCV9:
path_list = sparc_triplets;
else if (!strcmp(arch, "x86"))
break;
case EM_X86_64:
case EM_386:
path_list = x86_triplets;
else if (!strcmp(arch, "mips"))
break;
case EM_MIPS:
path_list = mips_triplets;
else {
ui__error("binutils for %s not supported.\n", arch);
break;
default:
ui__error("binutils for %s not supported.\n", perf_env__arch(env));
goto out_error;
}
@ -202,7 +248,7 @@ static int perf_env__lookup_binutils_path(struct perf_env *env,
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);
name, perf_env__arch(env), name);
goto out_error;
}
@ -237,7 +283,7 @@ int perf_env__lookup_objdump(struct perf_env *env, char **path)
*/
bool perf_env__single_address_space(struct perf_env *env)
{
const char *arch = perf_env__arch(env);
uint16_t e_machine = perf_env__e_machine(env, /*e_flags=*/NULL);
return strcmp(arch, "s390") && strcmp(arch, "sparc");
return e_machine != EM_SPARC && e_machine != EM_SPARCV9 && e_machine != EM_S390;
}