cregit-Linux how code gets into the kernel

Release 4.10 tools/perf/arch/common.c

Directory: tools/perf/arch
#include <stdio.h>
#include <sys/utsname.h>
#include "common.h"
#include "../util/util.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-",
	"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-",
	"powerpc64-unknown-linux-gnu-",
	"powerpc64-linux-gnu-",
	"powerpc64le-linux-gnu-",
	NULL
};


const char *const s390_triplets[] = {
	"s390-ibm-linux-",
	"s390x-linux-gnu-",
	NULL
};


const char *const sh_triplets[] = {
	"sh-unknown-linux-gnu-",
	"sh64-unknown-linux-gnu-",
	"sh-linux-gnu-",
	"sh64-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; }

Contributors

PersonTokensPropCommitsCommitProp
irina tirdeairina tirdea13298.51%150.00%
martin liskamartin liska21.49%150.00%
Total134100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
irina tirdeairina tirdea78100.00%1100.00%
Total78100.00%1100.00%

/* * Return architecture name in a normalized form. * The conversion logic comes from the Makefile. */
const char *normalize_arch(char *arch) { if (!strcmp(arch, "x86_64")) return "x86"; if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6') return "x86"; if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5)) return "sparc"; if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64")) return "arm64"; if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110")) return "arm"; if (!strncmp(arch, "s390", 4)) return "s390"; if (!strncmp(arch, "parisc", 6)) return "parisc"; if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3)) return "powerpc"; if (!strncmp(arch, "mips", 4)) return "mips"; if (!strncmp(arch, "sh", 2) && isdigit(arch[2])) return "sh"; return arch; }

Contributors

PersonTokensPropCommitsCommitProp
namhyung kimnamhyung kim19290.14%150.00%
elliott hugheselliott hughes219.86%150.00%
Total213100.00%2100.00%


static int perf_env__lookup_binutils_path(struct perf_env *env, const char *name, const char **path) { int idx; const char *arch, *cross_env; struct utsname uts; const char *const *path_list; char *buf = NULL; arch = normalize_arch(env->arch); 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(normalize_arch(uts.machine), 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, "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, "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; }

Contributors

PersonTokensPropCommitsCommitProp
irina tirdeairina tirdea34891.58%116.67%
elliott hugheselliott hughes153.95%116.67%
namhyung kimnamhyung kim133.42%116.67%
arnaldo carvalho de meloarnaldo carvalho de melo30.79%233.33%
kan liangkan liang10.26%116.67%
Total380100.00%6100.00%


int perf_env__lookup_objdump(struct perf_env *env) { /* * 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", &objdump_path); }

Contributors

PersonTokensPropCommitsCommitProp
irina tirdeairina tirdea1854.55%125.00%
namhyung kimnamhyung kim1236.36%125.00%
arnaldo carvalho de meloarnaldo carvalho de melo26.06%125.00%
kan liangkan liang13.03%125.00%
Total33100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
irina tirdeairina tirdea70969.37%110.00%
namhyung kimnamhyung kim21821.33%220.00%
elliott hugheselliott hughes494.79%110.00%
ravi bangoriaravi bangoria343.33%110.00%
arnaldo carvalho de meloarnaldo carvalho de melo80.78%330.00%
martin liskamartin liska20.20%110.00%
kan liangkan liang20.20%110.00%
Total1022100.00%10100.00%
Directory: tools/perf/arch
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