Something went wrong. Try again.
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123// SPDX-License-Identifier: GPL-2.0-or-later/* * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com> */
#include <stdio.h>#include <stdbool.h>#include <string.h>#include <stdlib.h>#include <unistd.h>#include <subcmd/exec-cmd.h>#include <subcmd/pager.h>#include <linux/kernel.h>
#include <objtool/builtin.h>#include <objtool/objtool.h>#include <objtool/warn.h>
static struct objtool_file file;
struct objtool_file *objtool_open_read(const char *filename){ if (file.elf) { ERROR("won't handle more than one file at a time"); return NULL; }
file.elf = elf_open_read(filename, O_RDWR); if (!file.elf) return NULL;
hash_init(file.insn_hash); INIT_LIST_HEAD(&file.retpoline_call_list); INIT_LIST_HEAD(&file.return_thunk_list); INIT_LIST_HEAD(&file.static_call_list); INIT_LIST_HEAD(&file.mcount_loc_list); INIT_LIST_HEAD(&file.endbr_list); INIT_LIST_HEAD(&file.call_list); file.ignore_unreachables = opts.no_unreachable; file.hints = false;
return &file;}
int objtool_pv_add(struct objtool_file *f, int idx, struct symbol *func){ if (!opts.noinstr) return 0;
if (!f->pv_ops) { ERROR("paravirt confusion"); return -1; }
/* * These functions will be patched into native code, * see paravirt_patch(). */ if (!strcmp(func->name, "_paravirt_nop") || !strcmp(func->name, "_paravirt_ident_64")) return 0;
/* already added this function */ if (!list_empty(&func->pv_target)) return 0;
list_add(&func->pv_target, &f->pv_ops[idx].targets); f->pv_ops[idx].clean = false; return 0;}
char *top_level_dir(const char *file){ ssize_t len, self_len, file_len; char self[PATH_MAX], *str; int i;
len = readlink("/proc/self/exe", self, sizeof(self) - 1); if (len <= 0) return NULL; self[len] = '\0';
for (i = 0; i < 3; i++) { char *s = strrchr(self, '/'); if (!s) return NULL; *s = '\0'; }
self_len = strlen(self); file_len = strlen(file);
str = malloc(self_len + file_len + 2); if (!str) return NULL;
memcpy(str, self, self_len); str[self_len] = '/'; strcpy(str + self_len + 1, file);
return str;}
int main(int argc, const char **argv){ static const char *UNUSED = "OBJTOOL_NOT_IMPLEMENTED";
if (init_signal_handler()) return -1;
/* libsubcmd init */ exec_cmd_init("objtool", UNUSED, UNUSED, UNUSED); pager_init(UNUSED);
if (argc > 1 && !strcmp(argv[1], "klp")) { argc--; argv++; return cmd_klp(argc, argv); }
return objtool_run(argc, argv);}