1 /* Generate ELF backend handle.
2 Copyright (C) 2000-2015 Red Hat, Inc.
3 This file is part of elfutils.
5 This file is free software; you can redistribute it and/or modify
6 it under the terms of either
8 * the GNU Lesser General Public License as published by the Free
9 Software Foundation; either version 3 of the License, or (at
10 your option) any later version
14 * the GNU General Public License as published by the Free
15 Software Foundation; either version 2 of the License, or (at
16 your option) any later version
18 or both in parallel, as here.
20 elfutils is distributed in the hope that it will be useful, but
21 WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 General Public License for more details.
25 You should have received copies of the GNU General Public License and
26 the GNU Lesser General Public License along with this program. If
27 not, see <http://www.gnu.org/licenses/>. */
45 /* This table should contain the complete list of architectures as far
46 as the ELF specification is concerned. */
47 /* XXX When things are stable replace the string pointers with char
48 arrays to avoid relocations. */
52 const char *emulation;
60 { "i386", "elf_i386", "i386", 4, EM_386, ELFCLASS32, ELFDATA2LSB },
61 { "ia64", "elf_ia64", "ia64", 4, EM_IA_64, ELFCLASS64, ELFDATA2LSB },
62 { "alpha", "elf_alpha", "alpha", 5, EM_ALPHA, ELFCLASS64, ELFDATA2LSB },
63 { "x86_64", "elf_x86_64", "x86_64", 6, EM_X86_64, ELFCLASS64, ELFDATA2LSB },
64 { "ppc", "elf_ppc", "ppc", 3, EM_PPC, ELFCLASS32, ELFDATA2MSB },
65 { "ppc64", "elf_ppc64", "ppc64", 5, EM_PPC64, ELFCLASS64, ELFDATA2MSB },
66 { "tilegx", "elf_tilegx", "tilegx", 6, EM_TILEGX, ELFCLASS64, ELFDATA2LSB },
67 // XXX class and machine fields need to be filled in for all archs.
68 { "sh", "elf_sh", "sh", 2, EM_SH, 0, 0 },
69 { "arm", "ebl_arm", "arm", 3, EM_ARM, 0, 0 },
70 { "sparc", "elf_sparcv9", "sparc", 5, EM_SPARCV9, 0, 0 },
71 { "sparc", "elf_sparc", "sparc", 5, EM_SPARC, 0, 0 },
72 { "sparc", "elf_sparcv8plus", "sparc", 5, EM_SPARC32PLUS, 0, 0 },
73 { "s390", "ebl_s390", "s390", 4, EM_S390, 0, 0 },
75 { "m32", "elf_m32", "m32", 3, EM_M32, 0, 0 },
76 { "m68k", "elf_m68k", "m68k", 4, EM_68K, 0, 0 },
77 { "m88k", "elf_m88k", "m88k", 4, EM_88K, 0, 0 },
78 { "i860", "elf_i860", "i860", 4, EM_860, 0, 0 },
79 { "s370", "ebl_s370", "s370", 4, EM_S370, 0, 0 },
80 { "parisc", "elf_parisc", "parisc", 6, EM_PARISC, 0, 0 },
81 { "vpp500", "elf_vpp500", "vpp500", 5, EM_VPP500, 0, 0 },
82 { "sparc", "elf_v8plus", "v8plus", 6, EM_SPARC32PLUS, 0, 0 },
83 { "i960", "elf_i960", "i960", 4, EM_960, 0, 0 },
84 { "v800", "ebl_v800", "v800", 4, EM_V800, 0, 0 },
85 { "fr20", "ebl_fr20", "fr20", 4, EM_FR20, 0, 0 },
86 { "rh32", "ebl_rh32", "rh32", 4, EM_RH32, 0, 0 },
87 { "rce", "ebl_rce", "rce", 3, EM_RCE, 0, 0 },
88 { "tricore", "elf_tricore", "tricore", 7, EM_TRICORE, 0, 0 },
89 { "arc", "elf_arc", "arc", 3, EM_ARC, 0, 0 },
90 { "h8", "elf_h8_300", "h8_300", 6, EM_H8_300, 0, 0 },
91 { "h8", "elf_h8_300h", "h8_300h", 6, EM_H8_300H, 0, 0 },
92 { "h8", "elf_h8s", "h8s", 6, EM_H8S, 0, 0 },
93 { "h8", "elf_h8_500", "h8_500", 6, EM_H8_500, 0, 0 },
94 { "coldfire", "elf_coldfire", "coldfire", 8, EM_COLDFIRE, 0, 0 },
95 { "m68k", "elf_68hc12", "68hc12", 6, EM_68HC12, 0, 0 },
96 { "mma", "elf_mma", "mma", 3, EM_MMA, 0, 0 },
97 { "pcp", "elf_pcp", "pcp", 3, EM_PCP, 0, 0 },
98 { "ncpu", "elf_ncpu", "ncpu", 4, EM_NCPU, 0, 0 },
99 { "ndr1", "elf_ndr1", "ndr1", 4, EM_NDR1, 0, 0 },
100 { "starcore", "elf_starcore", "starcore", 8, EM_STARCORE, 0, 0 },
101 { "me16", "elf_me16", "em16", 4, EM_ME16, 0, 0 },
102 { "st100", "elf_st100", "st100", 5, EM_ST100, 0, 0 },
103 { "tinyj", "elf_tinyj", "tinyj", 5, EM_TINYJ, 0, 0 },
104 { "pdsp", "elf_pdsp", "pdsp", 4, EM_PDSP, 0, 0 },
105 { "fx66", "elf_fx66", "fx66", 4, EM_FX66, 0, 0 },
106 { "st9plus", "elf_st9plus", "st9plus", 7, EM_ST9PLUS, 0, 0 },
107 { "st7", "elf_st7", "st7", 3, EM_ST7, 0, 0 },
108 { "m68k", "elf_68hc16", "68hc16", 6, EM_68HC16, 0, 0 },
109 { "m68k", "elf_68hc11", "68hc11", 6, EM_68HC11, 0, 0 },
110 { "m68k", "elf_68hc08", "68hc08", 6, EM_68HC08, 0, 0 },
111 { "m68k", "elf_68hc05", "68hc05", 6, EM_68HC05, 0, 0 },
112 { "svx", "elf_svx", "svx", 3, EM_SVX, 0, 0 },
113 { "st19", "elf_st19", "st19", 4, EM_ST19, 0, 0 },
114 { "vax", "elf_vax", "vax", 3, EM_VAX, 0, 0 },
115 { "cris", "elf_cris", "cris", 4, EM_CRIS, 0, 0 },
116 { "javelin", "elf_javelin", "javelin", 7, EM_JAVELIN, 0, 0 },
117 { "firepath", "elf_firepath", "firepath", 8, EM_FIREPATH, 0, 0 },
118 { "zsp", "elf_zsp", "zsp", 3, EM_ZSP, 0, 0 },
119 { "mmix", "elf_mmix", "mmix", 4, EM_MMIX, 0, 0 },
120 { "hunay", "elf_huany", "huany", 5, EM_HUANY, 0, 0 },
121 { "prism", "elf_prism", "prism", 5, EM_PRISM, 0, 0 },
122 { "avr", "elf_avr", "avr", 3, EM_AVR, 0, 0 },
123 { "fr30", "elf_fr30", "fr30", 4, EM_FR30, 0, 0 },
124 { "dv10", "elf_dv10", "dv10", 4, EM_D10V, 0, 0 },
125 { "dv30", "elf_dv30", "dv30", 4, EM_D30V, 0, 0 },
126 { "v850", "elf_v850", "v850", 4, EM_V850, 0, 0 },
127 { "m32r", "elf_m32r", "m32r", 4, EM_M32R, 0, 0 },
128 { "mn10300", "elf_mn10300", "mn10300", 7, EM_MN10300, 0, 0 },
129 { "mn10200", "elf_mn10200", "mn10200", 7, EM_MN10200, 0, 0 },
130 { "pj", "elf_pj", "pj", 2, EM_PJ, 0, 0 },
131 { "openrisc", "elf_openrisc", "openrisc", 8, EM_OPENRISC, 0, 0 },
132 { "arc", "elf_arc_a5", "arc_a5", 6, EM_ARC_A5, 0, 0 },
133 { "xtensa", "elf_xtensa", "xtensa", 6, EM_XTENSA, 0, 0 },
134 { "aarch64", "elf_aarch64", "aarch64", 7, EM_AARCH64, ELFCLASS64, 0 },
136 #define nmachines (sizeof (machines) / sizeof (machines[0]))
138 /* No machine prefix should be larger than this. */
139 #define MAX_PREFIX_LEN 16
141 /* Default callbacks. Mostly they just return the error value. */
142 static const char *default_object_type_name (int ignore, char *buf,
144 static const char *default_reloc_type_name (int ignore, char *buf, size_t len);
145 static bool default_reloc_type_check (int ignore);
146 static bool default_reloc_valid_use (Elf *elf, int ignore);
147 static Elf_Type default_reloc_simple_type (Ebl *ebl, int ignore);
148 static bool default_gotpc_reloc_check (Elf *elf, int ignore);
149 static const char *default_segment_type_name (int ignore, char *buf,
151 static const char *default_section_type_name (int ignore, char *buf,
153 static const char *default_section_name (int ignore, int ignore2, char *buf,
155 static const char *default_machine_flag_name (Elf64_Word *ignore);
156 static bool default_machine_flag_check (Elf64_Word flags);
157 static bool default_machine_section_flag_check (GElf_Xword flags);
158 static const char *default_symbol_type_name (int ignore, char *buf,
160 static const char *default_symbol_binding_name (int ignore, char *buf,
162 static const char *default_dynamic_tag_name (int64_t ignore, char *buf,
164 static bool default_dynamic_tag_check (int64_t ignore);
165 static GElf_Word default_sh_flags_combine (GElf_Word flags1, GElf_Word flags2);
166 static const char *default_osabi_name (int ignore, char *buf, size_t len);
167 static void default_destr (struct ebl *ignore);
168 static const char *default_core_note_type_name (uint32_t, char *buf,
170 static const char *default_object_note_type_name (const char *name, uint32_t,
171 char *buf, size_t len);
172 static int default_core_note (const GElf_Nhdr *nhdr, const char *name,
173 GElf_Word *regs_offset, size_t *nregloc,
174 const Ebl_Register_Location **reglocs,
175 size_t *nitems, const Ebl_Core_Item **);
176 static int default_auxv_info (GElf_Xword a_type,
177 const char **name, const char **format);
178 static bool default_object_note (const char *name, uint32_t type,
179 uint32_t descsz, const char *desc);
180 static bool default_debugscn_p (const char *name);
181 static bool default_copy_reloc_p (int reloc);
182 static bool default_none_reloc_p (int reloc);
183 static bool default_relative_reloc_p (int reloc);
184 static bool default_check_special_symbol (Elf *elf, GElf_Ehdr *ehdr,
187 const GElf_Shdr *destshdr);
188 static bool default_check_st_other_bits (unsigned char st_other);
189 static bool default_check_special_section (Ebl *, int,
190 const GElf_Shdr *, const char *);
191 static bool default_bss_plt_p (Elf *elf);
192 static int default_return_value_location (Dwarf_Die *functypedie,
193 const Dwarf_Op **locops);
194 static ssize_t default_register_info (Ebl *ebl,
195 int regno, char *name, size_t namelen,
197 const char **setname,
198 int *bits, int *type);
199 static int default_syscall_abi (Ebl *ebl, int *sp, int *pc,
200 int *callno, int args[6]);
201 static bool default_check_object_attribute (Ebl *ebl, const char *vendor,
202 int tag, uint64_t value,
203 const char **tag_name,
204 const char **value_name);
205 static bool default_check_reloc_target_type (Ebl *ebl, Elf64_Word sh_type);
206 static int default_abi_cfi (Ebl *ebl, Dwarf_CIE *abi_info);
210 fill_defaults (Ebl *result)
212 result->object_type_name = default_object_type_name;
213 result->reloc_type_name = default_reloc_type_name;
214 result->reloc_type_check = default_reloc_type_check;
215 result->reloc_valid_use = default_reloc_valid_use;
216 result->reloc_simple_type = default_reloc_simple_type;
217 result->gotpc_reloc_check = default_gotpc_reloc_check;
218 result->segment_type_name = default_segment_type_name;
219 result->section_type_name = default_section_type_name;
220 result->section_name = default_section_name;
221 result->machine_flag_name = default_machine_flag_name;
222 result->machine_flag_check = default_machine_flag_check;
223 result->machine_section_flag_check = default_machine_section_flag_check;
224 result->check_special_section = default_check_special_section;
225 result->symbol_type_name = default_symbol_type_name;
226 result->symbol_binding_name = default_symbol_binding_name;
227 result->dynamic_tag_name = default_dynamic_tag_name;
228 result->dynamic_tag_check = default_dynamic_tag_check;
229 result->sh_flags_combine = default_sh_flags_combine;
230 result->osabi_name = default_osabi_name;
231 result->core_note_type_name = default_core_note_type_name;
232 result->object_note_type_name = default_object_note_type_name;
233 result->core_note = default_core_note;
234 result->auxv_info = default_auxv_info;
235 result->object_note = default_object_note;
236 result->debugscn_p = default_debugscn_p;
237 result->copy_reloc_p = default_copy_reloc_p;
238 result->none_reloc_p = default_none_reloc_p;
239 result->relative_reloc_p = default_relative_reloc_p;
240 result->check_special_symbol = default_check_special_symbol;
241 result->check_st_other_bits = default_check_st_other_bits;
242 result->bss_plt_p = default_bss_plt_p;
243 result->return_value_location = default_return_value_location;
244 result->register_info = default_register_info;
245 result->syscall_abi = default_syscall_abi;
246 result->check_object_attribute = default_check_object_attribute;
247 result->check_reloc_target_type = default_check_reloc_target_type;
248 result->disasm = NULL;
249 result->abi_cfi = default_abi_cfi;
250 result->destr = default_destr;
251 result->sysvhash_entrysize = sizeof (Elf32_Word);
255 /* Find an appropriate backend for the file associated with ELF. */
257 openbackend (Elf *elf, const char *emulation, GElf_Half machine)
262 /* First allocate the data structure for the result. We do this
263 here since this assures that the structure is always large
265 result = (Ebl *) calloc (1, sizeof (Ebl));
269 // __libebl_seterror (ELF_E_NOMEM);
273 /* Fill in the default callbacks. The initializer for the machine
274 specific module can overwrite the values. */
275 fill_defaults (result);
277 /* XXX Currently all we do is to look at 'e_machine' value in the
278 ELF header. With an internal mapping table from EM_* value to
279 DSO name we try to load the appropriate module to handle this
282 Multiple modules for the same machine type are possible and they
283 will be tried in sequence. The lookup process will only stop
284 when a module which can handle the machine type is found or all
285 available matching modules are tried. */
286 for (cnt = 0; cnt < nmachines; ++cnt)
287 if ((emulation != NULL && strcmp (emulation, machines[cnt].emulation) == 0)
288 || (emulation == NULL && machines[cnt].em == machine))
290 /* Well, we know the emulation name now. */
291 result->emulation = machines[cnt].emulation;
293 /* We access some data structures directly. Make sure the 32 and
294 64 bit variants are laid out the same. */
295 assert (offsetof (Elf32_Ehdr, e_machine)
296 == offsetof (Elf64_Ehdr, e_machine));
297 assert (sizeof (((Elf32_Ehdr *) 0)->e_machine)
298 == sizeof (((Elf64_Ehdr *) 0)->e_machine));
299 assert (offsetof (Elf, state.elf32.ehdr)
300 == offsetof (Elf, state.elf64.ehdr));
302 /* Prefer taking the information from the ELF file. */
305 result->machine = machines[cnt].em;
306 result->class = machines[cnt].class;
307 result->data = machines[cnt].data;
311 result->machine = elf->state.elf32.ehdr->e_machine;
312 result->class = elf->state.elf32.ehdr->e_ident[EI_CLASS];
313 result->data = elf->state.elf32.ehdr->e_ident[EI_DATA];
316 #ifndef LIBEBL_SUBDIR
317 # define LIBEBL_SUBDIR PACKAGE
319 #define ORIGINDIR "$ORIGIN/../$LIB/" LIBEBL_SUBDIR "/"
321 /* Give it a try. At least the machine type matches. First
322 try to load the module. */
324 strcpy (stpcpy (stpcpy (dsoname, ORIGINDIR "libebl_"),
325 machines[cnt].dsoname),
328 void *h = dlopen (dsoname, RTLD_LAZY);
331 strcpy (stpcpy (stpcpy (dsoname, "libebl_"),
332 machines[cnt].dsoname),
334 h = dlopen (dsoname, RTLD_LAZY);
337 /* Try without an explicit path. */
340 /* We managed to load the object. Now see whether the
341 initialization function likes our file. */
342 static const char version[] = MODVERSION;
343 const char *modversion;
346 // We use a static number to help the compiler see we don't
347 // overflow the stack with an arbitrary number.
348 assert (machines[cnt].prefix_len <= MAX_PREFIX_LEN);
349 char symname[MAX_PREFIX_LEN + sizeof "_init"];
351 strcpy (mempcpy (symname, machines[cnt].prefix,
352 machines[cnt].prefix_len), "_init");
354 initp = (ebl_bhinit_t) dlsym (h, symname);
356 && (modversion = initp (elf, machine, result, sizeof (Ebl)))
357 && strcmp (version, modversion) == 0)
359 /* We found a module to handle our file. */
360 result->dlhandle = h;
363 /* A few entries are mandatory. */
364 assert (result->name != NULL);
365 assert (result->destr != NULL);
370 /* Not the module we need. */
374 /* We cannot find a DSO but the emulation/machine ID matches.
375 Return that information. */
376 result->dlhandle = NULL;
378 result->name = machines[cnt].prefix;
379 fill_defaults (result);
384 /* Nothing matched. We use only the default callbacks. */
385 result->dlhandle = NULL;
387 result->emulation = "<unknown>";
388 result->name = "<unknown>";
389 fill_defaults (result);
395 /* Find an appropriate backend for the file associated with ELF. */
397 ebl_openbackend (Elf *elf)
402 /* Get the ELF header of the object. */
403 ehdr = gelf_getehdr (elf, &ehdr_mem);
407 // __libebl_seterror (elf_errno ());
411 return openbackend (elf, NULL, ehdr->e_machine);
415 /* Find backend without underlying ELF file. */
417 ebl_openbackend_machine (GElf_Half machine)
419 return openbackend (NULL, NULL, machine);
423 /* Find backend with given emulation name. */
425 ebl_openbackend_emulation (const char *emulation)
427 return openbackend (NULL, emulation, EM_NONE);
431 /* Default callbacks. Mostly they just return the error value. */
433 default_object_type_name (int ignore __attribute__ ((unused)),
434 char *buf __attribute__ ((unused)),
435 size_t len __attribute__ ((unused)))
441 default_reloc_type_name (int ignore __attribute__ ((unused)),
442 char *buf __attribute__ ((unused)),
443 size_t len __attribute__ ((unused)))
449 default_reloc_type_check (int ignore __attribute__ ((unused)))
455 default_reloc_valid_use (Elf *elf __attribute__ ((unused)),
456 int ignore __attribute__ ((unused)))
462 default_reloc_simple_type (Ebl *eh __attribute__ ((unused)),
463 int ignore __attribute__ ((unused)))
469 default_gotpc_reloc_check (Elf *elf __attribute__ ((unused)),
470 int ignore __attribute__ ((unused)))
476 default_segment_type_name (int ignore __attribute__ ((unused)),
477 char *buf __attribute__ ((unused)),
478 size_t len __attribute__ ((unused)))
484 default_section_type_name (int ignore __attribute__ ((unused)),
485 char *buf __attribute__ ((unused)),
486 size_t len __attribute__ ((unused)))
492 default_section_name (int ignore __attribute__ ((unused)),
493 int ignore2 __attribute__ ((unused)),
494 char *buf __attribute__ ((unused)),
495 size_t len __attribute__ ((unused)))
501 default_machine_flag_name (Elf64_Word *ignore __attribute__ ((unused)))
507 default_machine_flag_check (Elf64_Word flags __attribute__ ((unused)))
513 default_machine_section_flag_check (GElf_Xword flags)
519 default_check_special_section (Ebl *ebl __attribute__ ((unused)),
520 int ndx __attribute__ ((unused)),
521 const GElf_Shdr *shdr __attribute__ ((unused)),
522 const char *sname __attribute__ ((unused)))
528 default_symbol_type_name (int ignore __attribute__ ((unused)),
529 char *buf __attribute__ ((unused)),
530 size_t len __attribute__ ((unused)))
536 default_symbol_binding_name (int ignore __attribute__ ((unused)),
537 char *buf __attribute__ ((unused)),
538 size_t len __attribute__ ((unused)))
544 default_dynamic_tag_name (int64_t ignore __attribute__ ((unused)),
545 char *buf __attribute__ ((unused)),
546 size_t len __attribute__ ((unused)))
552 default_dynamic_tag_check (int64_t ignore __attribute__ ((unused)))
558 default_sh_flags_combine (GElf_Word flags1, GElf_Word flags2)
560 return SH_FLAGS_COMBINE (flags1, flags2);
564 default_destr (struct ebl *ignore __attribute__ ((unused)))
569 default_osabi_name (int ignore __attribute__ ((unused)),
570 char *buf __attribute__ ((unused)),
571 size_t len __attribute__ ((unused)))
577 default_core_note_type_name (uint32_t ignore __attribute__ ((unused)),
578 char *buf __attribute__ ((unused)),
579 size_t len __attribute__ ((unused)))
585 default_auxv_info (GElf_Xword a_type __attribute__ ((unused)),
586 const char **name __attribute__ ((unused)),
587 const char **format __attribute__ ((unused)))
593 default_core_note (const GElf_Nhdr *nhdr __attribute__ ((unused)),
594 const char *name __attribute__ ((unused)),
595 GElf_Word *ro __attribute__ ((unused)),
596 size_t *nregloc __attribute__ ((unused)),
597 const Ebl_Register_Location **reglocs
598 __attribute__ ((unused)),
599 size_t *nitems __attribute__ ((unused)),
600 const Ebl_Core_Item **items __attribute__ ((unused)))
606 default_object_note_type_name (const char *name __attribute__ ((unused)),
607 uint32_t ignore __attribute__ ((unused)),
608 char *buf __attribute__ ((unused)),
609 size_t len __attribute__ ((unused)))
615 default_object_note (const char *name __attribute__ ((unused)),
616 uint32_t type __attribute__ ((unused)),
617 uint32_t descsz __attribute__ ((unused)),
618 const char *desc __attribute__ ((unused)))
624 default_debugscn_p (const char *name)
626 /* We know by default only about the DWARF debug sections which have
628 static const char *dwarf_scn_names[] =
633 /* GNU DWARF 1 extensions */
636 /* DWARF 1.1 and DWARF 2 */
652 /* GDB DWARF 4 extension */
654 /* GNU/DWARF 5 extension/proposal */
656 /* SGI/MIPS DWARF 2 extensions */
662 const size_t ndwarf_scn_names = (sizeof (dwarf_scn_names)
663 / sizeof (dwarf_scn_names[0]));
664 for (size_t cnt = 0; cnt < ndwarf_scn_names; ++cnt)
665 if (strcmp (name, dwarf_scn_names[cnt]) == 0
666 || (strncmp (name, ".zdebug", strlen (".zdebug")) == 0
667 && strcmp (&name[2], &dwarf_scn_names[cnt][1]) == 0))
674 default_copy_reloc_p (int reloc __attribute__ ((unused)))
678 strong_alias (default_copy_reloc_p, default_none_reloc_p)
679 strong_alias (default_copy_reloc_p, default_relative_reloc_p)
682 default_check_special_symbol (Elf *elf __attribute__ ((unused)),
683 GElf_Ehdr *ehdr __attribute__ ((unused)),
684 const GElf_Sym *sym __attribute__ ((unused)),
685 const char *name __attribute__ ((unused)),
686 const GElf_Shdr *destshdr __attribute__ ((unused)))
692 default_check_st_other_bits (unsigned char st_other __attribute__ ((unused)))
699 default_bss_plt_p (Elf *elf __attribute__ ((unused)))
705 default_return_value_location (Dwarf_Die *functypedie __attribute__ ((unused)),
706 const Dwarf_Op **locops __attribute__ ((unused)))
712 default_register_info (Ebl *ebl __attribute__ ((unused)),
713 int regno, char *name, size_t namelen,
715 const char **setname,
716 int *bits, int *type)
725 return snprintf (name, namelen, "reg%d", regno);
729 default_syscall_abi (Ebl *ebl __attribute__ ((unused)),
730 int *sp, int *pc, int *callno, int args[6])
732 *sp = *pc = *callno = -1;
743 default_check_object_attribute (Ebl *ebl __attribute__ ((unused)),
744 const char *vendor __attribute__ ((unused)),
745 int tag __attribute__ ((unused)),
746 uint64_t value __attribute__ ((unused)),
747 const char **tag_name, const char **value_name)
755 default_check_reloc_target_type (Ebl *ebl __attribute__ ((unused)),
756 Elf64_Word sh_type __attribute__ ((unused)))
762 default_abi_cfi (Ebl *ebl __attribute__ ((unused)),
763 Dwarf_CIE *abi_info __attribute__ ((unused)))