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![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
For the frequent idiom of: free(ptr); ptr = NULL; Make it expect a pointer to the pointer being freed, so that it becomes clear at first sight that the variable being freed is being modified. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pfw02ezuab37kha18wlut7ir@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
211 lines
4.3 KiB
C
211 lines
4.3 KiB
C
#include <stdio.h>
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#include <sys/utsname.h>
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#include "common.h"
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#include "../util/debug.h"
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const char *const arm_triplets[] = {
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"arm-eabi-",
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"arm-linux-androideabi-",
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"arm-unknown-linux-",
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"arm-unknown-linux-gnu-",
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"arm-unknown-linux-gnueabi-",
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NULL
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};
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const char *const powerpc_triplets[] = {
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"powerpc-unknown-linux-gnu-",
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"powerpc64-unknown-linux-gnu-",
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NULL
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};
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const char *const s390_triplets[] = {
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"s390-ibm-linux-",
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NULL
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};
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const char *const sh_triplets[] = {
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"sh-unknown-linux-gnu-",
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"sh64-unknown-linux-gnu-",
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NULL
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};
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const char *const sparc_triplets[] = {
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"sparc-unknown-linux-gnu-",
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"sparc64-unknown-linux-gnu-",
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NULL
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};
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const char *const x86_triplets[] = {
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"x86_64-pc-linux-gnu-",
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"x86_64-unknown-linux-gnu-",
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"i686-pc-linux-gnu-",
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"i586-pc-linux-gnu-",
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"i486-pc-linux-gnu-",
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"i386-pc-linux-gnu-",
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"i686-linux-android-",
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"i686-android-linux-",
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NULL
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};
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const char *const mips_triplets[] = {
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"mips-unknown-linux-gnu-",
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"mipsel-linux-android-",
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NULL
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};
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static bool lookup_path(char *name)
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{
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bool found = false;
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char *path, *tmp;
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char buf[PATH_MAX];
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char *env = getenv("PATH");
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if (!env)
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return false;
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env = strdup(env);
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if (!env)
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return false;
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path = strtok_r(env, ":", &tmp);
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while (path) {
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scnprintf(buf, sizeof(buf), "%s/%s", path, name);
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if (access(buf, F_OK) == 0) {
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found = true;
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break;
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}
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path = strtok_r(NULL, ":", &tmp);
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}
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free(env);
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return found;
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}
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static int lookup_triplets(const char *const *triplets, const char *name)
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{
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int i;
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char buf[PATH_MAX];
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for (i = 0; triplets[i] != NULL; i++) {
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scnprintf(buf, sizeof(buf), "%s%s", triplets[i], name);
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if (lookup_path(buf))
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return i;
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}
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return -1;
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}
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/*
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* Return architecture name in a normalized form.
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* The conversion logic comes from the Makefile.
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*/
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static const char *normalize_arch(char *arch)
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{
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if (!strcmp(arch, "x86_64"))
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return "x86";
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if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
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return "x86";
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if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
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return "sparc";
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if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
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return "arm";
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if (!strncmp(arch, "s390", 4))
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return "s390";
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if (!strncmp(arch, "parisc", 6))
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return "parisc";
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if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
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return "powerpc";
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if (!strncmp(arch, "mips", 4))
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return "mips";
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if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
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return "sh";
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return arch;
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}
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static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
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const char *name,
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const char **path)
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{
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int idx;
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const char *arch, *cross_env;
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struct utsname uts;
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const char *const *path_list;
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char *buf = NULL;
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arch = normalize_arch(env->arch);
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if (uname(&uts) < 0)
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goto out;
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/*
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* We don't need to try to find objdump path for native system.
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* Just use default binutils path (e.g.: "objdump").
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*/
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if (!strcmp(normalize_arch(uts.machine), arch))
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goto out;
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cross_env = getenv("CROSS_COMPILE");
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if (cross_env) {
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if (asprintf(&buf, "%s%s", cross_env, name) < 0)
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goto out_error;
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if (buf[0] == '/') {
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if (access(buf, F_OK) == 0)
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goto out;
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goto out_error;
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}
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if (lookup_path(buf))
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goto out;
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zfree(&buf);
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}
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if (!strcmp(arch, "arm"))
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path_list = arm_triplets;
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else if (!strcmp(arch, "powerpc"))
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path_list = powerpc_triplets;
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else if (!strcmp(arch, "sh"))
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path_list = sh_triplets;
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else if (!strcmp(arch, "s390"))
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path_list = s390_triplets;
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else if (!strcmp(arch, "sparc"))
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path_list = sparc_triplets;
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else if (!strcmp(arch, "x86"))
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path_list = x86_triplets;
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else if (!strcmp(arch, "mips"))
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path_list = mips_triplets;
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else {
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ui__error("binutils for %s not supported.\n", arch);
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goto out_error;
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}
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idx = lookup_triplets(path_list, name);
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if (idx < 0) {
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ui__error("Please install %s for %s.\n"
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"You can add it to PATH, set CROSS_COMPILE or "
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"override the default using --%s.\n",
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name, arch, name);
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goto out_error;
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}
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if (asprintf(&buf, "%s%s", path_list[idx], name) < 0)
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goto out_error;
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out:
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*path = buf;
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return 0;
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out_error:
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free(buf);
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*path = NULL;
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return -1;
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}
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int perf_session_env__lookup_objdump(struct perf_session_env *env)
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{
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/*
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* For live mode, env->arch will be NULL and we can use
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* the native objdump tool.
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*/
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if (env->arch == NULL)
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return 0;
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return perf_session_env__lookup_binutils_path(env, "objdump",
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&objdump_path);
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}
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