perf tools: Try to find cross-built objdump path

As we have architecture information of saved perf.data file, we can try
to find cross-built objdump path.

The triplets include support for Android (arm, x86 and mips
architectures).

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Originally-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1350344020-8071-5-git-send-email-irina.tirdea@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Irina Tirdea 2012-10-16 02:33:38 +03:00 committed by Arnaldo Carvalho de Melo
parent feb8ada4ea
commit 68e94f4eb5
6 changed files with 204 additions and 1 deletions

View File

@ -426,6 +426,8 @@ LIB_OBJS += $(OUTPUT)ui/helpline.o
LIB_OBJS += $(OUTPUT)ui/hist.o
LIB_OBJS += $(OUTPUT)ui/stdio/hist.o
LIB_OBJS += $(OUTPUT)arch/common.o
BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
BUILTIN_OBJS += $(OUTPUT)builtin-bench.o
# Benchmark modules

178
tools/perf/arch/common.c Normal file
View File

@ -0,0 +1,178 @@
#include <stdio.h>
#include <sys/utsname.h>
#include "common.h"
#include "../util/debug.h"
const char *const arm_triplets[] = {
"arm-eabi-",
"arm-linux-androideabi-",
"arm-unknown-linux-",
"arm-unknown-linux-gnu-",
"arm-unknown-linux-gnueabi-",
NULL
};
const char *const powerpc_triplets[] = {
"powerpc-unknown-linux-gnu-",
"powerpc64-unknown-linux-gnu-",
NULL
};
const char *const s390_triplets[] = {
"s390-ibm-linux-",
NULL
};
const char *const sh_triplets[] = {
"sh-unknown-linux-gnu-",
"sh64-unknown-linux-gnu-",
NULL
};
const char *const sparc_triplets[] = {
"sparc-unknown-linux-gnu-",
"sparc64-unknown-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-",
NULL
};
const char *const mips_triplets[] = {
"mips-unknown-linux-gnu-",
"mipsel-linux-android-",
NULL
};
static bool lookup_path(char *name)
{
bool found = false;
char *path, *tmp;
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_session_env__lookup_binutils_path(struct perf_session_env *env,
const char *name,
const char **path)
{
int idx;
char *arch, *cross_env;
struct utsname uts;
const char *const *path_list;
char *buf = NULL;
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(uts.machine, env->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;
free(buf);
}
arch = env->arch;
if (!strcmp(arch, "arm"))
path_list = arm_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") || !strcmp(arch, "i386") ||
!strcmp(arch, "i486") || !strcmp(arch, "i586") ||
!strcmp(arch, "i686"))
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_session_env__lookup_objdump(struct perf_session_env *env)
{
return perf_session_env__lookup_binutils_path(env, "objdump",
&objdump_path);
}

10
tools/perf/arch/common.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef ARCH_PERF_COMMON_H
#define ARCH_PERF_COMMON_H
#include "../util/session.h"
extern const char *objdump_path;
int perf_session_env__lookup_objdump(struct perf_session_env *env);
#endif /* ARCH_PERF_COMMON_H */

View File

@ -28,6 +28,7 @@
#include "util/hist.h"
#include "util/session.h"
#include "util/tool.h"
#include "arch/common.h"
#include <linux/bitmap.h>
@ -186,6 +187,12 @@ static int __cmd_annotate(struct perf_annotate *ann)
goto out_delete;
}
if (!objdump_path) {
ret = perf_session_env__lookup_objdump(&session->header.env);
if (ret)
goto out_delete;
}
ret = perf_session__process_events(session, &ann->tool);
if (ret)
goto out_delete;

View File

@ -33,6 +33,7 @@
#include "util/thread.h"
#include "util/sort.h"
#include "util/hist.h"
#include "arch/common.h"
#include <linux/bitmap.h>
@ -672,6 +673,12 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
has_br_stack = perf_header__has_feat(&session->header,
HEADER_BRANCH_STACK);
if (!objdump_path) {
ret = perf_session_env__lookup_objdump(&session->header.env);
if (ret)
goto error;
}
if (sort__branch_mode == -1 && has_br_stack)
sort__branch_mode = 1;

View File

@ -154,6 +154,5 @@ static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
#endif
extern const char *disassembler_style;
extern const char *objdump_path;
#endif /* __PERF_ANNOTATE_H */