perf: Remove unused parts of symbol-elf.c
authorBarret Rhoden <brho@cs.berkeley.edu>
Thu, 26 May 2016 16:00:55 +0000 (12:00 -0400)
committerBarret Rhoden <brho@cs.berkeley.edu>
Thu, 16 Jun 2016 15:48:39 +0000 (11:48 -0400)
We actually just need the build-id stuff.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>
tools/profile/perf/symbol-elf.c

index 5d8c614..d779c3c 100644 (file)
@@ -210,141 +210,6 @@ Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
             idx < nr_entries; \
             ++idx, pos = gelf_getrela(reldata, idx, &pos_mem))
 
-/*
- * We need to check if we have a .dynsym, so that we can handle the
- * .plt, synthesizing its symbols, that aren't on the symtabs (be it
- * .dynsym or .symtab).
- * And always look at the original dso, not at debuginfo packages, that
- * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS).
- */
-int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map *map,
-                               symbol_filter_t filter)
-{
-       uint32_t nr_rel_entries, idx;
-       GElf_Sym sym;
-       u64 plt_offset;
-       GElf_Shdr shdr_plt;
-       struct symbol *f;
-       GElf_Shdr shdr_rel_plt, shdr_dynsym;
-       Elf_Data *reldata, *syms, *symstrs;
-       Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym;
-       size_t dynsym_idx;
-       GElf_Ehdr ehdr;
-       char sympltname[1024];
-       Elf *elf;
-       int nr = 0, symidx, err = 0;
-
-       if (!ss->dynsym)
-               return 0;
-
-       elf = ss->elf;
-       ehdr = ss->ehdr;
-
-       scn_dynsym = ss->dynsym;
-       shdr_dynsym = ss->dynshdr;
-       dynsym_idx = ss->dynsym_idx;
-
-       if (scn_dynsym == NULL)
-               goto out_elf_end;
-
-       scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt,
-                                         ".rela.plt", NULL);
-       if (scn_plt_rel == NULL) {
-               scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt,
-                                                 ".rel.plt", NULL);
-               if (scn_plt_rel == NULL)
-                       goto out_elf_end;
-       }
-
-       err = -1;
-
-       if (shdr_rel_plt.sh_link != dynsym_idx)
-               goto out_elf_end;
-
-       if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL)
-               goto out_elf_end;
-
-       /*
-        * Fetch the relocation section to find the idxes to the GOT
-        * and the symbols in the .dynsym they refer to.
-        */
-       reldata = elf_getdata(scn_plt_rel, NULL);
-       if (reldata == NULL)
-               goto out_elf_end;
-
-       syms = elf_getdata(scn_dynsym, NULL);
-       if (syms == NULL)
-               goto out_elf_end;
-
-       scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link);
-       if (scn_symstrs == NULL)
-               goto out_elf_end;
-
-       symstrs = elf_getdata(scn_symstrs, NULL);
-       if (symstrs == NULL)
-               goto out_elf_end;
-
-       if (symstrs->d_size == 0)
-               goto out_elf_end;
-
-       nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize;
-       plt_offset = shdr_plt.sh_offset;
-
-       if (shdr_rel_plt.sh_type == SHT_RELA) {
-               GElf_Rela pos_mem, *pos;
-
-               elf_section__for_each_rela(reldata, pos, pos_mem, idx,
-                                          nr_rel_entries) {
-                       symidx = GELF_R_SYM(pos->r_info);
-                       plt_offset += shdr_plt.sh_entsize;
-                       gelf_getsym(syms, symidx, &sym);
-                       snprintf(sympltname, sizeof(sympltname),
-                                "%s@plt", elf_sym__name(&sym, symstrs));
-
-                       f = symbol__new(plt_offset, shdr_plt.sh_entsize,
-                                       STB_GLOBAL, sympltname);
-                       if (!f)
-                               goto out_elf_end;
-
-                       if (filter && filter(map, f))
-                               symbol__delete(f);
-                       else {
-                               symbols__insert(&dso->symbols[map->type], f);
-                               ++nr;
-                       }
-               }
-       } else if (shdr_rel_plt.sh_type == SHT_REL) {
-               GElf_Rel pos_mem, *pos;
-               elf_section__for_each_rel(reldata, pos, pos_mem, idx,
-                                         nr_rel_entries) {
-                       symidx = GELF_R_SYM(pos->r_info);
-                       plt_offset += shdr_plt.sh_entsize;
-                       gelf_getsym(syms, symidx, &sym);
-                       snprintf(sympltname, sizeof(sympltname),
-                                "%s@plt", elf_sym__name(&sym, symstrs));
-
-                       f = symbol__new(plt_offset, shdr_plt.sh_entsize,
-                                       STB_GLOBAL, sympltname);
-                       if (!f)
-                               goto out_elf_end;
-
-                       if (filter && filter(map, f))
-                               symbol__delete(f);
-                       else {
-                               symbols__insert(&dso->symbols[map->type], f);
-                               ++nr;
-                       }
-               }
-       }
-
-       err = 0;
-out_elf_end:
-       if (err == 0)
-               return nr;
-       pr_debug("%s: problems reading %s PLT info.\n",
-                __func__, dso->long_name);
-       return 0;
-}
 
 /*
  * Align offset to 4 bytes as needed for note name and descriptor data.
@@ -457,1338 +322,6 @@ out:
        return err;
 }
 
-int sysfs__read_build_id(const char *filename, void *build_id, size_t size)
-{
-       int fd, err = -1;
-
-       if (size < BUILD_ID_SIZE)
-               goto out;
-
-       fd = open(filename, O_RDONLY);
-       if (fd < 0)
-               goto out;
-
-       while (1) {
-               char bf[BUFSIZ];
-               GElf_Nhdr nhdr;
-               size_t namesz, descsz;
-
-               if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr))
-                       break;
-
-               namesz = NOTE_ALIGN(nhdr.n_namesz);
-               descsz = NOTE_ALIGN(nhdr.n_descsz);
-               if (nhdr.n_type == NT_GNU_BUILD_ID &&
-                   nhdr.n_namesz == sizeof("GNU")) {
-                       if (read(fd, bf, namesz) != (ssize_t)namesz)
-                               break;
-                       if (memcmp(bf, "GNU", sizeof("GNU")) == 0) {
-                               size_t sz = min(descsz, size);
-                               if (read(fd, build_id, sz) == (ssize_t)sz) {
-                                       memset(build_id + sz, 0, size - sz);
-                                       err = 0;
-                                       break;
-                               }
-                       } else if (read(fd, bf, descsz) != (ssize_t)descsz)
-                               break;
-               } else {
-                       int n = namesz + descsz;
-                       if (read(fd, bf, n) != n)
-                               break;
-               }
-       }
-       close(fd);
-out:
-       return err;
-}
-
-int filename__read_debuglink(const char *filename, char *debuglink,
-                            size_t size)
-{
-       int fd, err = -1;
-       Elf *elf;
-       GElf_Ehdr ehdr;
-       GElf_Shdr shdr;
-       Elf_Data *data;
-       Elf_Scn *sec;
-       Elf_Kind ek;
-
-       fd = open(filename, O_RDONLY);
-       if (fd < 0)
-               goto out;
-
-       elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
-       if (elf == NULL) {
-               pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename);
-               goto out_close;
-       }
-
-       ek = elf_kind(elf);
-       if (ek != ELF_K_ELF)
-               goto out_elf_end;
-
-       if (gelf_getehdr(elf, &ehdr) == NULL) {
-               pr_err("%s: cannot get elf header.\n", __func__);
-               goto out_elf_end;
-       }
-
-       sec = elf_section_by_name(elf, &ehdr, &shdr,
-                                 ".gnu_debuglink", NULL);
-       if (sec == NULL)
-               goto out_elf_end;
-
-       data = elf_getdata(sec, NULL);
-       if (data == NULL)
-               goto out_elf_end;
-
-       /* the start of this section is a zero-terminated string */
-       strncpy(debuglink, data->d_buf, size);
-
-       err = 0;
-
-out_elf_end:
-       elf_end(elf);
-out_close:
-       close(fd);
-out:
-       return err;
-}
-
-static int dso__swap_init(struct dso *dso, unsigned char eidata)
-{
-       static unsigned int const endian = 1;
-
-       dso->needs_swap = DSO_SWAP__NO;
-
-       switch (eidata) {
-       case ELFDATA2LSB:
-               /* We are big endian, DSO is little endian. */
-               if (*(unsigned char const *)&endian != 1)
-                       dso->needs_swap = DSO_SWAP__YES;
-               break;
-
-       case ELFDATA2MSB:
-               /* We are little endian, DSO is big endian. */
-               if (*(unsigned char const *)&endian != 0)
-                       dso->needs_swap = DSO_SWAP__YES;
-               break;
-
-       default:
-               pr_err("unrecognized DSO data encoding %d\n", eidata);
-               return -EINVAL;
-       }
-
-       return 0;
-}
-
-static int decompress_kmodule(struct dso *dso, const char *name,
-                             enum dso_binary_type type)
-{
-       int fd = -1;
-       char tmpbuf[] = "/tmp/perf-kmod-XXXXXX";
-       struct kmod_path m;
-
-       if (type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP &&
-           type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP &&
-           type != DSO_BINARY_TYPE__BUILD_ID_CACHE)
-               return -1;
-
-       if (type == DSO_BINARY_TYPE__BUILD_ID_CACHE)
-               name = dso->long_name;
-
-       if (kmod_path__parse_ext(&m, name) || !m.comp)
-               return -1;
-
-       fd = mkstemp(tmpbuf);
-       if (fd < 0) {
-               dso->load_errno = errno;
-               goto out;
-       }
-
-       if (!decompress_to_file(m.ext, name, fd)) {
-               dso->load_errno = DSO_LOAD_ERRNO__DECOMPRESSION_FAILURE;
-               close(fd);
-               fd = -1;
-       }
-
-       unlink(tmpbuf);
-
-out:
-       free(m.ext);
-       return fd;
-}
-
-bool symsrc__possibly_runtime(struct symsrc *ss)
-{
-       return ss->dynsym || ss->opdsec;
-}
-
-bool symsrc__has_symtab(struct symsrc *ss)
-{
-       return ss->symtab != NULL;
-}
-
-void symsrc__destroy(struct symsrc *ss)
-{
-       zfree(&ss->name);
-       elf_end(ss->elf);
-       close(ss->fd);
-}
-
-bool __weak elf__needs_adjust_symbols(GElf_Ehdr ehdr)
-{
-       return ehdr.e_type == ET_EXEC || ehdr.e_type == ET_REL;
-}
-
-int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
-                enum dso_binary_type type)
-{
-       int err = -1;
-       GElf_Ehdr ehdr;
-       Elf *elf;
-       int fd;
-
-       if (dso__needs_decompress(dso)) {
-               fd = decompress_kmodule(dso, name, type);
-               if (fd < 0)
-                       return -1;
-       } else {
-               fd = open(name, O_RDONLY);
-               if (fd < 0) {
-                       dso->load_errno = errno;
-                       return -1;
-               }
-       }
-
-       elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
-       if (elf == NULL) {
-               pr_debug("%s: cannot read %s ELF file.\n", __func__, name);
-               dso->load_errno = DSO_LOAD_ERRNO__INVALID_ELF;
-               goto out_close;
-       }
-
-       if (gelf_getehdr(elf, &ehdr) == NULL) {
-               dso->load_errno = DSO_LOAD_ERRNO__INVALID_ELF;
-               pr_debug("%s: cannot get elf header.\n", __func__);
-               goto out_elf_end;
-       }
-
-       if (dso__swap_init(dso, ehdr.e_ident[EI_DATA])) {
-               dso->load_errno = DSO_LOAD_ERRNO__INTERNAL_ERROR;
-               goto out_elf_end;
-       }
-
-       /* Always reject images with a mismatched build-id: */
-       if (dso->has_build_id) {
-               u8 build_id[BUILD_ID_SIZE];
-
-               if (elf_read_build_id(elf, build_id, BUILD_ID_SIZE) < 0) {
-                       dso->load_errno = DSO_LOAD_ERRNO__CANNOT_READ_BUILDID;
-                       goto out_elf_end;
-               }
-
-               if (!dso__build_id_equal(dso, build_id)) {
-                       pr_debug("%s: build id mismatch for %s.\n", __func__, name);
-                       dso->load_errno = DSO_LOAD_ERRNO__MISMATCHING_BUILDID;
-                       goto out_elf_end;
-               }
-       }
-
-       ss->is_64_bit = (gelf_getclass(elf) == ELFCLASS64);
-
-       ss->symtab = elf_section_by_name(elf, &ehdr, &ss->symshdr, ".symtab",
-                       NULL);
-       if (ss->symshdr.sh_type != SHT_SYMTAB)
-               ss->symtab = NULL;
-
-       ss->dynsym_idx = 0;
-       ss->dynsym = elf_section_by_name(elf, &ehdr, &ss->dynshdr, ".dynsym",
-                       &ss->dynsym_idx);
-       if (ss->dynshdr.sh_type != SHT_DYNSYM)
-               ss->dynsym = NULL;
-
-       ss->opdidx = 0;
-       ss->opdsec = elf_section_by_name(elf, &ehdr, &ss->opdshdr, ".opd",
-                       &ss->opdidx);
-       if (ss->opdshdr.sh_type != SHT_PROGBITS)
-               ss->opdsec = NULL;
-
-       if (dso->kernel == DSO_TYPE_USER) {
-               GElf_Shdr shdr;
-               ss->adjust_symbols = (ehdr.e_type == ET_EXEC ||
-                               ehdr.e_type == ET_REL ||
-                               dso__is_vdso(dso) ||
-                               elf_section_by_name(elf, &ehdr, &shdr,
-                                                    ".gnu.prelink_undo",
-                                                    NULL) != NULL);
-       } else {
-               ss->adjust_symbols = elf__needs_adjust_symbols(ehdr);
-       }
-
-       ss->name   = strdup(name);
-       if (!ss->name) {
-               dso->load_errno = errno;
-               goto out_elf_end;
-       }
-
-       ss->elf    = elf;
-       ss->fd     = fd;
-       ss->ehdr   = ehdr;
-       ss->type   = type;
-
-       return 0;
-
-out_elf_end:
-       elf_end(elf);
-out_close:
-       close(fd);
-       return err;
-}
-
-/**
- * ref_reloc_sym_not_found - has kernel relocation symbol been found.
- * @kmap: kernel maps and relocation reference symbol
- *
- * This function returns %true if we are dealing with the kernel maps and the
- * relocation reference symbol has not yet been found.  Otherwise %false is
- * returned.
- */
-static bool ref_reloc_sym_not_found(struct kmap *kmap)
-{
-       return kmap && kmap->ref_reloc_sym && kmap->ref_reloc_sym->name &&
-              !kmap->ref_reloc_sym->unrelocated_addr;
-}
-
-/**
- * ref_reloc - kernel relocation offset.
- * @kmap: kernel maps and relocation reference symbol
- *
- * This function returns the offset of kernel addresses as determined by using
- * the relocation reference symbol i.e. if the kernel has not been relocated
- * then the return value is zero.
- */
-static u64 ref_reloc(struct kmap *kmap)
-{
-       if (kmap && kmap->ref_reloc_sym &&
-           kmap->ref_reloc_sym->unrelocated_addr)
-               return kmap->ref_reloc_sym->addr -
-                      kmap->ref_reloc_sym->unrelocated_addr;
-       return 0;
-}
-
-static bool want_demangle(bool is_kernel_sym)
-{
-       return is_kernel_sym ? symbol_conf.demangle_kernel : symbol_conf.demangle;
-}
-
-void __weak arch__elf_sym_adjust(GElf_Sym *sym __maybe_unused) { }
-
-int dso__load_sym(struct dso *dso, struct map *map,
-                 struct symsrc *syms_ss, struct symsrc *runtime_ss,
-                 symbol_filter_t filter, int kmodule)
-{
-       struct kmap *kmap = dso->kernel ? map__kmap(map) : NULL;
-       struct map_groups *kmaps = kmap ? map__kmaps(map) : NULL;
-       struct map *curr_map = map;
-       struct dso *curr_dso = dso;
-       Elf_Data *symstrs, *secstrs;
-       uint32_t nr_syms;
-       int err = -1;
-       uint32_t idx;
-       GElf_Ehdr ehdr;
-       GElf_Shdr shdr;
-       Elf_Data *syms, *opddata = NULL;
-       GElf_Sym sym;
-       Elf_Scn *sec, *sec_strndx;
-       Elf *elf;
-       int nr = 0;
-       bool remap_kernel = false, adjust_kernel_syms = false;
-
-       if (kmap && !kmaps)
-               return -1;
-
-       dso->symtab_type = syms_ss->type;
-       dso->is_64_bit = syms_ss->is_64_bit;
-       dso->rel = syms_ss->ehdr.e_type == ET_REL;
-
-       /*
-        * Modules may already have symbols from kallsyms, but those symbols
-        * have the wrong values for the dso maps, so remove them.
-        */
-       if (kmodule && syms_ss->symtab)
-               symbols__delete(&dso->symbols[map->type]);
-
-       if (!syms_ss->symtab) {
-               /*
-                * If the vmlinux is stripped, fail so we will fall back
-                * to using kallsyms. The vmlinux runtime symbols aren't
-                * of much use.
-                */
-               if (dso->kernel)
-                       goto out_elf_end;
-
-               syms_ss->symtab  = syms_ss->dynsym;
-               syms_ss->symshdr = syms_ss->dynshdr;
-       }
-
-       elf = syms_ss->elf;
-       ehdr = syms_ss->ehdr;
-       sec = syms_ss->symtab;
-       shdr = syms_ss->symshdr;
-
-       if (runtime_ss->opdsec)
-               opddata = elf_rawdata(runtime_ss->opdsec, NULL);
-
-       syms = elf_getdata(sec, NULL);
-       if (syms == NULL)
-               goto out_elf_end;
-
-       sec = elf_getscn(elf, shdr.sh_link);
-       if (sec == NULL)
-               goto out_elf_end;
-
-       symstrs = elf_getdata(sec, NULL);
-       if (symstrs == NULL)
-               goto out_elf_end;
-
-       sec_strndx = elf_getscn(runtime_ss->elf, runtime_ss->ehdr.e_shstrndx);
-       if (sec_strndx == NULL)
-               goto out_elf_end;
-
-       secstrs = elf_getdata(sec_strndx, NULL);
-       if (secstrs == NULL)
-               goto out_elf_end;
-
-       nr_syms = shdr.sh_size / shdr.sh_entsize;
-
-       memset(&sym, 0, sizeof(sym));
-
-       /*
-        * The kernel relocation symbol is needed in advance in order to adjust
-        * kernel maps correctly.
-        */
-       if (ref_reloc_sym_not_found(kmap)) {
-               elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) {
-                       const char *elf_name = elf_sym__name(&sym, symstrs);
-
-                       if (strcmp(elf_name, kmap->ref_reloc_sym->name))
-                               continue;
-                       kmap->ref_reloc_sym->unrelocated_addr = sym.st_value;
-                       map->reloc = kmap->ref_reloc_sym->addr -
-                                    kmap->ref_reloc_sym->unrelocated_addr;
-                       break;
-               }
-       }
-
-       /*
-        * Handle any relocation of vdso necessary because older kernels
-        * attempted to prelink vdso to its virtual address.
-        */
-       if (dso__is_vdso(dso)) {
-               GElf_Shdr tshdr;
-
-               if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL))
-                       map->reloc = map->start - tshdr.sh_addr + tshdr.sh_offset;
-       }
-
-       dso->adjust_symbols = runtime_ss->adjust_symbols || ref_reloc(kmap);
-       /*
-        * Initial kernel and module mappings do not map to the dso.  For
-        * function mappings, flag the fixups.
-        */
-       if (map->type == MAP__FUNCTION && (dso->kernel || kmodule)) {
-               remap_kernel = true;
-               adjust_kernel_syms = dso->adjust_symbols;
-       }
-       elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) {
-               struct symbol *f;
-               const char *elf_name = elf_sym__name(&sym, symstrs);
-               char *demangled = NULL;
-               int is_label = elf_sym__is_label(&sym);
-               const char *section_name;
-               bool used_opd = false;
-
-               if (!is_label && !elf_sym__is_a(&sym, map->type))
-                       continue;
-
-               /* Reject ARM ELF "mapping symbols": these aren't unique and
-                * don't identify functions, so will confuse the profile
-                * output: */
-               if (ehdr.e_machine == EM_ARM || ehdr.e_machine == EM_AARCH64) {
-                       if (elf_name[0] == '$' && strchr("adtx", elf_name[1])
-                           && (elf_name[2] == '\0' || elf_name[2] == '.'))
-                               continue;
-               }
-
-               if (runtime_ss->opdsec && sym.st_shndx == runtime_ss->opdidx) {
-                       u32 offset = sym.st_value - syms_ss->opdshdr.sh_addr;
-                       u64 *opd = opddata->d_buf + offset;
-                       sym.st_value = DSO__SWAP(dso, u64, *opd);
-                       sym.st_shndx = elf_addr_to_index(runtime_ss->elf,
-                                       sym.st_value);
-                       used_opd = true;
-               }
-               /*
-                * When loading symbols in a data mapping, ABS symbols (which
-                * has a value of SHN_ABS in its st_shndx) failed at
-                * elf_getscn().  And it marks the loading as a failure so
-                * already loaded symbols cannot be fixed up.
-                *
-                * I'm not sure what should be done. Just ignore them for now.
-                * - Namhyung Kim
-                */
-               if (sym.st_shndx == SHN_ABS)
-                       continue;
-
-               sec = elf_getscn(runtime_ss->elf, sym.st_shndx);
-               if (!sec)
-                       goto out_elf_end;
-
-               gelf_getshdr(sec, &shdr);
-
-               if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type))
-                       continue;
-
-               section_name = elf_sec__name(&shdr, secstrs);
-
-               /* On ARM, symbols for thumb functions have 1 added to
-                * the symbol address as a flag - remove it */
-               if ((ehdr.e_machine == EM_ARM) &&
-                   (map->type == MAP__FUNCTION) &&
-                   (sym.st_value & 1))
-                       --sym.st_value;
-
-               arch__elf_sym_adjust(&sym);
-
-               if (dso->kernel || kmodule) {
-                       char dso_name[PATH_MAX];
-
-                       /* Adjust symbol to map to file offset */
-                       if (adjust_kernel_syms)
-                               sym.st_value -= shdr.sh_addr - shdr.sh_offset;
-
-                       if (strcmp(section_name,
-                                  (curr_dso->short_name +
-                                   dso->short_name_len)) == 0)
-                               goto new_symbol;
-
-                       if (strcmp(section_name, ".text") == 0) {
-                               /*
-                                * The initial kernel mapping is based on
-                                * kallsyms and identity maps.  Overwrite it to
-                                * map to the kernel dso.
-                                */
-                               if (remap_kernel && dso->kernel) {
-                                       remap_kernel = false;
-                                       map->start = shdr.sh_addr +
-                                                    ref_reloc(kmap);
-                                       map->end = map->start + shdr.sh_size;
-                                       map->pgoff = shdr.sh_offset;
-                                       map->map_ip = map__map_ip;
-                                       map->unmap_ip = map__unmap_ip;
-                                       /* Ensure maps are correctly ordered */
-                                       if (kmaps) {
-                                               map__get(map);
-                                               map_groups__remove(kmaps, map);
-                                               map_groups__insert(kmaps, map);
-                                               map__put(map);
-                                       }
-                               }
-
-                               /*
-                                * The initial module mapping is based on
-                                * /proc/modules mapped to offset zero.
-                                * Overwrite it to map to the module dso.
-                                */
-                               if (remap_kernel && kmodule) {
-                                       remap_kernel = false;
-                                       map->pgoff = shdr.sh_offset;
-                               }
-
-                               curr_map = map;
-                               curr_dso = dso;
-                               goto new_symbol;
-                       }
-
-                       if (!kmap)
-                               goto new_symbol;
-
-                       snprintf(dso_name, sizeof(dso_name),
-                                "%s%s", dso->short_name, section_name);
-
-                       curr_map = map_groups__find_by_name(kmaps, map->type, dso_name);
-                       if (curr_map == NULL) {
-                               u64 start = sym.st_value;
-
-                               if (kmodule)
-                                       start += map->start + shdr.sh_offset;
-
-                               curr_dso = dso__new(dso_name);
-                               if (curr_dso == NULL)
-                                       goto out_elf_end;
-                               curr_dso->kernel = dso->kernel;
-                               curr_dso->long_name = dso->long_name;
-                               curr_dso->long_name_len = dso->long_name_len;
-                               curr_map = map__new2(start, curr_dso,
-                                                    map->type);
-                               dso__put(curr_dso);
-                               if (curr_map == NULL) {
-                                       goto out_elf_end;
-                               }
-                               if (adjust_kernel_syms) {
-                                       curr_map->start = shdr.sh_addr +
-                                                         ref_reloc(kmap);
-                                       curr_map->end = curr_map->start +
-                                                       shdr.sh_size;
-                                       curr_map->pgoff = shdr.sh_offset;
-                               } else {
-                                       curr_map->map_ip = identity__map_ip;
-                                       curr_map->unmap_ip = identity__map_ip;
-                               }
-                               curr_dso->symtab_type = dso->symtab_type;
-                               map_groups__insert(kmaps, curr_map);
-                               /*
-                                * Add it before we drop the referece to curr_map,
-                                * i.e. while we still are sure to have a reference
-                                * to this DSO via curr_map->dso.
-                                */
-                               dsos__add(&map->groups->machine->dsos, curr_dso);
-                               /* kmaps already got it */
-                               map__put(curr_map);
-                               dso__set_loaded(curr_dso, map->type);
-                       } else
-                               curr_dso = curr_map->dso;
-
-                       goto new_symbol;
-               }
-
-               if ((used_opd && runtime_ss->adjust_symbols)
-                               || (!used_opd && syms_ss->adjust_symbols)) {
-                       pr_debug4("%s: adjusting symbol: st_value: %#" PRIx64 " "
-                                 "sh_addr: %#" PRIx64 " sh_offset: %#" PRIx64 "\n", __func__,
-                                 (u64)sym.st_value, (u64)shdr.sh_addr,
-                                 (u64)shdr.sh_offset);
-                       sym.st_value -= shdr.sh_addr - shdr.sh_offset;
-               }
-new_symbol:
-               /*
-                * We need to figure out if the object was created from C++ sources
-                * DWARF DW_compile_unit has this, but we don't always have access
-                * to it...
-                */
-               if (want_demangle(dso->kernel || kmodule)) {
-                       int demangle_flags = DMGL_NO_OPTS;
-                       if (verbose)
-                               demangle_flags = DMGL_PARAMS | DMGL_ANSI;
-
-                       demangled = bfd_demangle(NULL, elf_name, demangle_flags);
-                       if (demangled != NULL)
-                               elf_name = demangled;
-               }
-               f = symbol__new(sym.st_value, sym.st_size,
-                               GELF_ST_BIND(sym.st_info), elf_name);
-               free(demangled);
-               if (!f)
-                       goto out_elf_end;
-
-               if (filter && filter(curr_map, f))
-                       symbol__delete(f);
-               else {
-                       symbols__insert(&curr_dso->symbols[curr_map->type], f);
-                       nr++;
-               }
-       }
-
-       /*
-        * For misannotated, zeroed, ASM function sizes.
-        */
-       if (nr > 0) {
-               if (!symbol_conf.allow_aliases)
-                       symbols__fixup_duplicate(&dso->symbols[map->type]);
-               symbols__fixup_end(&dso->symbols[map->type]);
-               if (kmap) {
-                       /*
-                        * We need to fixup this here too because we create new
-                        * maps here, for things like vsyscall sections.
-                        */
-                       __map_groups__fixup_end(kmaps, map->type);
-               }
-       }
-       err = nr;
-out_elf_end:
-       return err;
-}
-
-static int elf_read_maps(Elf *elf, bool exe, mapfn_t mapfn, void *data)
-{
-       GElf_Phdr phdr;
-       size_t i, phdrnum;
-       int err;
-       u64 sz;
-
-       if (elf_getphdrnum(elf, &phdrnum))
-               return -1;
-
-       for (i = 0; i < phdrnum; i++) {
-               if (gelf_getphdr(elf, i, &phdr) == NULL)
-                       return -1;
-               if (phdr.p_type != PT_LOAD)
-                       continue;
-               if (exe) {
-                       if (!(phdr.p_flags & PF_X))
-                               continue;
-               } else {
-                       if (!(phdr.p_flags & PF_R))
-                               continue;
-               }
-               sz = min(phdr.p_memsz, phdr.p_filesz);
-               if (!sz)
-                       continue;
-               err = mapfn(phdr.p_vaddr, sz, phdr.p_offset, data);
-               if (err)
-                       return err;
-       }
-       return 0;
-}
-
-int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
-                   bool *is_64_bit)
-{
-       int err;
-       Elf *elf;
-
-       elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
-       if (elf == NULL)
-               return -1;
-
-       if (is_64_bit)
-               *is_64_bit = (gelf_getclass(elf) == ELFCLASS64);
-
-       err = elf_read_maps(elf, exe, mapfn, data);
-
-       elf_end(elf);
-       return err;
-}
-
-enum dso_type dso__type_fd(int fd)
-{
-       enum dso_type dso_type = DSO__TYPE_UNKNOWN;
-       GElf_Ehdr ehdr;
-       Elf_Kind ek;
-       Elf *elf;
-
-       elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
-       if (elf == NULL)
-               goto out;
-
-       ek = elf_kind(elf);
-       if (ek != ELF_K_ELF)
-               goto out_end;
-
-       if (gelf_getclass(elf) == ELFCLASS64) {
-               dso_type = DSO__TYPE_64BIT;
-               goto out_end;
-       }
-
-       if (gelf_getehdr(elf, &ehdr) == NULL)
-               goto out_end;
-
-       if (ehdr.e_machine == EM_X86_64)
-               dso_type = DSO__TYPE_X32BIT;
-       else
-               dso_type = DSO__TYPE_32BIT;
-out_end:
-       elf_end(elf);
-out:
-       return dso_type;
-}
-
-static int copy_bytes(int from, off_t from_offs, int to, off_t to_offs, u64 len)
-{
-       ssize_t r;
-       size_t n;
-       int err = -1;
-       char *buf = malloc(page_size);
-
-       if (buf == NULL)
-               return -1;
-
-       if (lseek(to, to_offs, SEEK_SET) != to_offs)
-               goto out;
-
-       if (lseek(from, from_offs, SEEK_SET) != from_offs)
-               goto out;
-
-       while (len) {
-               n = page_size;
-               if (len < n)
-                       n = len;
-               /* Use read because mmap won't work on proc files */
-               r = read(from, buf, n);
-               if (r < 0)
-                       goto out;
-               if (!r)
-                       break;
-               n = r;
-               r = write(to, buf, n);
-               if (r < 0)
-                       goto out;
-               if ((size_t)r != n)
-                       goto out;
-               len -= n;
-       }
-
-       err = 0;
-out:
-       free(buf);
-       return err;
-}
-
-struct kcore {
-       int fd;
-       int elfclass;
-       Elf *elf;
-       GElf_Ehdr ehdr;
-};
-
-static int kcore__open(struct kcore *kcore, const char *filename)
-{
-       GElf_Ehdr *ehdr;
-
-       kcore->fd = open(filename, O_RDONLY);
-       if (kcore->fd == -1)
-               return -1;
-
-       kcore->elf = elf_begin(kcore->fd, ELF_C_READ, NULL);
-       if (!kcore->elf)
-               goto out_close;
-
-       kcore->elfclass = gelf_getclass(kcore->elf);
-       if (kcore->elfclass == ELFCLASSNONE)
-               goto out_end;
-
-       ehdr = gelf_getehdr(kcore->elf, &kcore->ehdr);
-       if (!ehdr)
-               goto out_end;
-
-       return 0;
-
-out_end:
-       elf_end(kcore->elf);
-out_close:
-       close(kcore->fd);
-       return -1;
-}
-
-static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
-                      bool temp)
-{
-       kcore->elfclass = elfclass;
-
-       if (temp)
-               kcore->fd = mkstemp(filename);
-       else
-               kcore->fd = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0400);
-       if (kcore->fd == -1)
-               return -1;
-
-       kcore->elf = elf_begin(kcore->fd, ELF_C_WRITE, NULL);
-       if (!kcore->elf)
-               goto out_close;
-
-       if (!gelf_newehdr(kcore->elf, elfclass))
-               goto out_end;
-
-       memset(&kcore->ehdr, 0, sizeof(GElf_Ehdr));
-
-       return 0;
-
-out_end:
-       elf_end(kcore->elf);
-out_close:
-       close(kcore->fd);
-       unlink(filename);
-       return -1;
-}
-
-static void kcore__close(struct kcore *kcore)
-{
-       elf_end(kcore->elf);
-       close(kcore->fd);
-}
-
-static int kcore__copy_hdr(struct kcore *from, struct kcore *to, size_t count)
-{
-       GElf_Ehdr *ehdr = &to->ehdr;
-       GElf_Ehdr *kehdr = &from->ehdr;
-
-       memcpy(ehdr->e_ident, kehdr->e_ident, EI_NIDENT);
-       ehdr->e_type      = kehdr->e_type;
-       ehdr->e_machine   = kehdr->e_machine;
-       ehdr->e_version   = kehdr->e_version;
-       ehdr->e_entry     = 0;
-       ehdr->e_shoff     = 0;
-       ehdr->e_flags     = kehdr->e_flags;
-       ehdr->e_phnum     = count;
-       ehdr->e_shentsize = 0;
-       ehdr->e_shnum     = 0;
-       ehdr->e_shstrndx  = 0;
-
-       if (from->elfclass == ELFCLASS32) {
-               ehdr->e_phoff     = sizeof(Elf32_Ehdr);
-               ehdr->e_ehsize    = sizeof(Elf32_Ehdr);
-               ehdr->e_phentsize = sizeof(Elf32_Phdr);
-       } else {
-               ehdr->e_phoff     = sizeof(Elf64_Ehdr);
-               ehdr->e_ehsize    = sizeof(Elf64_Ehdr);
-               ehdr->e_phentsize = sizeof(Elf64_Phdr);
-       }
-
-       if (!gelf_update_ehdr(to->elf, ehdr))
-               return -1;
-
-       if (!gelf_newphdr(to->elf, count))
-               return -1;
-
-       return 0;
-}
-
-static int kcore__add_phdr(struct kcore *kcore, int idx, off_t offset,
-                          u64 addr, u64 len)
-{
-       GElf_Phdr phdr = {
-               .p_type         = PT_LOAD,
-               .p_flags        = PF_R | PF_W | PF_X,
-               .p_offset       = offset,
-               .p_vaddr        = addr,
-               .p_paddr        = 0,
-               .p_filesz       = len,
-               .p_memsz        = len,
-               .p_align        = page_size,
-       };
-
-       if (!gelf_update_phdr(kcore->elf, idx, &phdr))
-               return -1;
-
-       return 0;
-}
-
-static off_t kcore__write(struct kcore *kcore)
-{
-       return elf_update(kcore->elf, ELF_C_WRITE);
-}
-
-struct phdr_data {
-       off_t offset;
-       u64 addr;
-       u64 len;
-};
-
-struct kcore_copy_info {
-       u64 stext;
-       u64 etext;
-       u64 first_symbol;
-       u64 last_symbol;
-       u64 first_module;
-       u64 last_module_symbol;
-       struct phdr_data kernel_map;
-       struct phdr_data modules_map;
-};
-
-static int kcore_copy__process_kallsyms(void *arg, const char *name, char type,
-                                       u64 start)
-{
-       struct kcore_copy_info *kci = arg;
-
-       if (!symbol_type__is_a(type, MAP__FUNCTION))
-               return 0;
-
-       if (strchr(name, '[')) {
-               if (start > kci->last_module_symbol)
-                       kci->last_module_symbol = start;
-               return 0;
-       }
-
-       if (!kci->first_symbol || start < kci->first_symbol)
-               kci->first_symbol = start;
-
-       if (!kci->last_symbol || start > kci->last_symbol)
-               kci->last_symbol = start;
-
-       if (!strcmp(name, "_stext")) {
-               kci->stext = start;
-               return 0;
-       }
-
-       if (!strcmp(name, "_etext")) {
-               kci->etext = start;
-               return 0;
-       }
-
-       return 0;
-}
-
-static int kcore_copy__parse_kallsyms(struct kcore_copy_info *kci,
-                                     const char *dir)
-{
-       char kallsyms_filename[PATH_MAX];
-
-       scnprintf(kallsyms_filename, PATH_MAX, "%s/kallsyms", dir);
-
-       if (symbol__restricted_filename(kallsyms_filename, "/proc/kallsyms"))
-               return -1;
-
-       if (kallsyms__parse(kallsyms_filename, kci,
-                           kcore_copy__process_kallsyms) < 0)
-               return -1;
-
-       return 0;
-}
-
-static int kcore_copy__process_modules(void *arg,
-                                      const char *name __maybe_unused,
-                                      u64 start)
-{
-       struct kcore_copy_info *kci = arg;
-
-       if (!kci->first_module || start < kci->first_module)
-               kci->first_module = start;
-
-       return 0;
-}
-
-static int kcore_copy__parse_modules(struct kcore_copy_info *kci,
-                                    const char *dir)
-{
-       char modules_filename[PATH_MAX];
-
-       scnprintf(modules_filename, PATH_MAX, "%s/modules", dir);
-
-       if (symbol__restricted_filename(modules_filename, "/proc/modules"))
-               return -1;
-
-       if (modules__parse(modules_filename, kci,
-                          kcore_copy__process_modules) < 0)
-               return -1;
-
-       return 0;
-}
-
-static void kcore_copy__map(struct phdr_data *p, u64 start, u64 end, u64 pgoff,
-                           u64 s, u64 e)
-{
-       if (p->addr || s < start || s >= end)
-               return;
-
-       p->addr = s;
-       p->offset = (s - start) + pgoff;
-       p->len = e < end ? e - s : end - s;
-}
-
-static int kcore_copy__read_map(u64 start, u64 len, u64 pgoff, void *data)
-{
-       struct kcore_copy_info *kci = data;
-       u64 end = start + len;
-
-       kcore_copy__map(&kci->kernel_map, start, end, pgoff, kci->stext,
-                       kci->etext);
-
-       kcore_copy__map(&kci->modules_map, start, end, pgoff, kci->first_module,
-                       kci->last_module_symbol);
-
-       return 0;
-}
-
-static int kcore_copy__read_maps(struct kcore_copy_info *kci, Elf *elf)
-{
-       if (elf_read_maps(elf, true, kcore_copy__read_map, kci) < 0)
-               return -1;
-
-       return 0;
-}
-
-static int kcore_copy__calc_maps(struct kcore_copy_info *kci, const char *dir,
-                                Elf *elf)
-{
-       if (kcore_copy__parse_kallsyms(kci, dir))
-               return -1;
-
-       if (kcore_copy__parse_modules(kci, dir))
-               return -1;
-
-       if (kci->stext)
-               kci->stext = round_down(kci->stext, page_size);
-       else
-               kci->stext = round_down(kci->first_symbol, page_size);
-
-       if (kci->etext) {
-               kci->etext = round_up(kci->etext, page_size);
-       } else if (kci->last_symbol) {
-               kci->etext = round_up(kci->last_symbol, page_size);
-               kci->etext += page_size;
-       }
-
-       kci->first_module = round_down(kci->first_module, page_size);
-
-       if (kci->last_module_symbol) {
-               kci->last_module_symbol = round_up(kci->last_module_symbol,
-                                                  page_size);
-               kci->last_module_symbol += page_size;
-       }
-
-       if (!kci->stext || !kci->etext)
-               return -1;
-
-       if (kci->first_module && !kci->last_module_symbol)
-               return -1;
-
-       return kcore_copy__read_maps(kci, elf);
-}
-
-static int kcore_copy__copy_file(const char *from_dir, const char *to_dir,
-                                const char *name)
-{
-       char from_filename[PATH_MAX];
-       char to_filename[PATH_MAX];
-
-       scnprintf(from_filename, PATH_MAX, "%s/%s", from_dir, name);
-       scnprintf(to_filename, PATH_MAX, "%s/%s", to_dir, name);
-
-       return copyfile_mode(from_filename, to_filename, 0400);
-}
-
-static int kcore_copy__unlink(const char *dir, const char *name)
-{
-       char filename[PATH_MAX];
-
-       scnprintf(filename, PATH_MAX, "%s/%s", dir, name);
-
-       return unlink(filename);
-}
-
-static int kcore_copy__compare_fds(int from, int to)
-{
-       char *buf_from;
-       char *buf_to;
-       ssize_t ret;
-       size_t len;
-       int err = -1;
-
-       buf_from = malloc(page_size);
-       buf_to = malloc(page_size);
-       if (!buf_from || !buf_to)
-               goto out;
-
-       while (1) {
-               /* Use read because mmap won't work on proc files */
-               ret = read(from, buf_from, page_size);
-               if (ret < 0)
-                       goto out;
-
-               if (!ret)
-                       break;
-
-               len = ret;
-
-               if (readn(to, buf_to, len) != (int)len)
-                       goto out;
-
-               if (memcmp(buf_from, buf_to, len))
-                       goto out;
-       }
-
-       err = 0;
-out:
-       free(buf_to);
-       free(buf_from);
-       return err;
-}
-
-static int kcore_copy__compare_files(const char *from_filename,
-                                    const char *to_filename)
-{
-       int from, to, err = -1;
-
-       from = open(from_filename, O_RDONLY);
-       if (from < 0)
-               return -1;
-
-       to = open(to_filename, O_RDONLY);
-       if (to < 0)
-               goto out_close_from;
-
-       err = kcore_copy__compare_fds(from, to);
-
-       close(to);
-out_close_from:
-       close(from);
-       return err;
-}
-
-static int kcore_copy__compare_file(const char *from_dir, const char *to_dir,
-                                   const char *name)
-{
-       char from_filename[PATH_MAX];
-       char to_filename[PATH_MAX];
-
-       scnprintf(from_filename, PATH_MAX, "%s/%s", from_dir, name);
-       scnprintf(to_filename, PATH_MAX, "%s/%s", to_dir, name);
-
-       return kcore_copy__compare_files(from_filename, to_filename);
-}
-
-/**
- * kcore_copy - copy kallsyms, modules and kcore from one directory to another.
- * @from_dir: from directory
- * @to_dir: to directory
- *
- * This function copies kallsyms, modules and kcore files from one directory to
- * another.  kallsyms and modules are copied entirely.  Only code segments are
- * copied from kcore.  It is assumed that two segments suffice: one for the
- * kernel proper and one for all the modules.  The code segments are determined
- * from kallsyms and modules files.  The kernel map starts at _stext or the
- * lowest function symbol, and ends at _etext or the highest function symbol.
- * The module map starts at the lowest module address and ends at the highest
- * module symbol.  Start addresses are rounded down to the nearest page.  End
- * addresses are rounded up to the nearest page.  An extra page is added to the
- * highest kernel symbol and highest module symbol to, hopefully, encompass that
- * symbol too.  Because it contains only code sections, the resulting kcore is
- * unusual.  One significant peculiarity is that the mapping (start -> pgoff)
- * is not the same for the kernel map and the modules map.  That happens because
- * the data is copied adjacently whereas the original kcore has gaps.  Finally,
- * kallsyms and modules files are compared with their copies to check that
- * modules have not been loaded or unloaded while the copies were taking place.
- *
- * Return: %0 on success, %-1 on failure.
- */
-int kcore_copy(const char *from_dir, const char *to_dir)
-{
-       struct kcore kcore;
-       struct kcore extract;
-       size_t count = 2;
-       int idx = 0, err = -1;
-       off_t offset = page_size, sz, modules_offset = 0;
-       struct kcore_copy_info kci = { .stext = 0, };
-       char kcore_filename[PATH_MAX];
-       char extract_filename[PATH_MAX];
-
-       if (kcore_copy__copy_file(from_dir, to_dir, "kallsyms"))
-               return -1;
-
-       if (kcore_copy__copy_file(from_dir, to_dir, "modules"))
-               goto out_unlink_kallsyms;
-
-       scnprintf(kcore_filename, PATH_MAX, "%s/kcore", from_dir);
-       scnprintf(extract_filename, PATH_MAX, "%s/kcore", to_dir);
-
-       if (kcore__open(&kcore, kcore_filename))
-               goto out_unlink_modules;
-
-       if (kcore_copy__calc_maps(&kci, from_dir, kcore.elf))
-               goto out_kcore_close;
-
-       if (kcore__init(&extract, extract_filename, kcore.elfclass, false))
-               goto out_kcore_close;
-
-       if (!kci.modules_map.addr)
-               count -= 1;
-
-       if (kcore__copy_hdr(&kcore, &extract, count))
-               goto out_extract_close;
-
-       if (kcore__add_phdr(&extract, idx++, offset, kci.kernel_map.addr,
-                           kci.kernel_map.len))
-               goto out_extract_close;
-
-       if (kci.modules_map.addr) {
-               modules_offset = offset + kci.kernel_map.len;
-               if (kcore__add_phdr(&extract, idx, modules_offset,
-                                   kci.modules_map.addr, kci.modules_map.len))
-                       goto out_extract_close;
-       }
-
-       sz = kcore__write(&extract);
-       if (sz < 0 || sz > offset)
-               goto out_extract_close;
-
-       if (copy_bytes(kcore.fd, kci.kernel_map.offset, extract.fd, offset,
-                      kci.kernel_map.len))
-               goto out_extract_close;
-
-       if (modules_offset && copy_bytes(kcore.fd, kci.modules_map.offset,
-                                        extract.fd, modules_offset,
-                                        kci.modules_map.len))
-               goto out_extract_close;
-
-       if (kcore_copy__compare_file(from_dir, to_dir, "modules"))
-               goto out_extract_close;
-
-       if (kcore_copy__compare_file(from_dir, to_dir, "kallsyms"))
-               goto out_extract_close;
-
-       err = 0;
-
-out_extract_close:
-       kcore__close(&extract);
-       if (err)
-               unlink(extract_filename);
-out_kcore_close:
-       kcore__close(&kcore);
-out_unlink_modules:
-       if (err)
-               kcore_copy__unlink(to_dir, "modules");
-out_unlink_kallsyms:
-       if (err)
-               kcore_copy__unlink(to_dir, "kallsyms");
-
-       return err;
-}
-
-int kcore_extract__create(struct kcore_extract *kce)
-{
-       struct kcore kcore;
-       struct kcore extract;
-       size_t count = 1;
-       int idx = 0, err = -1;
-       off_t offset = page_size, sz;
-
-       if (kcore__open(&kcore, kce->kcore_filename))
-               return -1;
-
-       strcpy(kce->extract_filename, PERF_KCORE_EXTRACT);
-       if (kcore__init(&extract, kce->extract_filename, kcore.elfclass, true))
-               goto out_kcore_close;
-
-       if (kcore__copy_hdr(&kcore, &extract, count))
-               goto out_extract_close;
-
-       if (kcore__add_phdr(&extract, idx, offset, kce->addr, kce->len))
-               goto out_extract_close;
-
-       sz = kcore__write(&extract);
-       if (sz < 0 || sz > offset)
-               goto out_extract_close;
-
-       if (copy_bytes(kcore.fd, kce->offs, extract.fd, offset, kce->len))
-               goto out_extract_close;
-
-       err = 0;
-
-out_extract_close:
-       kcore__close(&extract);
-       if (err)
-               unlink(kce->extract_filename);
-out_kcore_close:
-       kcore__close(&kcore);
-
-       return err;
-}
-
-void kcore_extract__delete(struct kcore_extract *kce)
-{
-       unlink(kce->extract_filename);
-}
-
 void symbol__elf_init(void)
 {
        elf_version(EV_CURRENT);