1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
28 static reloc_howto_type *elf_s390_reloc_type_lookup
29 PARAMS ((bfd *, bfd_reloc_code_real_type));
30 static void elf_s390_info_to_howto
31 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
32 static bfd_boolean elf_s390_is_local_label_name
33 PARAMS ((bfd *, const char *));
34 static struct bfd_hash_entry *link_hash_newfunc
35 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
36 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
38 static bfd_boolean create_got_section
39 PARAMS((bfd *, struct bfd_link_info *));
40 static bfd_boolean elf_s390_create_dynamic_sections
41 PARAMS((bfd *, struct bfd_link_info *));
42 static void elf_s390_copy_indirect_symbol
43 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
44 struct elf_link_hash_entry *));
45 static bfd_boolean elf_s390_check_relocs
46 PARAMS ((bfd *, struct bfd_link_info *, asection *,
47 const Elf_Internal_Rela *));
48 static asection *elf_s390_gc_mark_hook
49 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
50 struct elf_link_hash_entry *, Elf_Internal_Sym *));
51 static bfd_boolean elf_s390_gc_sweep_hook
52 PARAMS ((bfd *, struct bfd_link_info *, asection *,
53 const Elf_Internal_Rela *));
54 struct elf_s390_link_hash_entry;
55 static void elf_s390_adjust_gotplt
56 PARAMS ((struct elf_s390_link_hash_entry *));
57 static bfd_boolean elf_s390_adjust_dynamic_symbol
58 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
59 static bfd_boolean allocate_dynrelocs
60 PARAMS ((struct elf_link_hash_entry *, PTR));
61 static bfd_boolean readonly_dynrelocs
62 PARAMS ((struct elf_link_hash_entry *, PTR));
63 static bfd_boolean elf_s390_size_dynamic_sections
64 PARAMS ((bfd *, struct bfd_link_info *));
65 static bfd_boolean elf_s390_relocate_section
66 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
67 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
68 static bfd_boolean elf_s390_finish_dynamic_symbol
69 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
71 static enum elf_reloc_type_class elf_s390_reloc_type_class
72 PARAMS ((const Elf_Internal_Rela *));
73 static bfd_boolean elf_s390_finish_dynamic_sections
74 PARAMS ((bfd *, struct bfd_link_info *));
75 static bfd_boolean elf_s390_mkobject
77 static bfd_boolean elf_s390_object_p
79 static bfd_boolean elf_s390_grok_prstatus
80 PARAMS ((bfd *, Elf_Internal_Note *));
81 static int elf_s390_tls_transition
82 PARAMS ((struct bfd_link_info *, int, int));
83 static bfd_reloc_status_type s390_tls_reloc
84 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
85 static bfd_vma dtpoff_base
86 PARAMS ((struct bfd_link_info *));
88 PARAMS ((struct bfd_link_info *, bfd_vma));
89 static void invalid_tls_insn
90 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
91 static bfd_reloc_status_type s390_elf_ldisp_reloc
92 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
96 /* The relocation "howto" table. */
98 static reloc_howto_type elf_howto_table[] =
100 HOWTO (R_390_NONE, /* type */
102 0, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE, /* pc_relative */
106 complain_overflow_dont, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_390_NONE", /* name */
109 FALSE, /* partial_inplace */
112 FALSE), /* pcrel_offset */
114 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
115 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
116 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
117 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
118 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
120 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
122 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
124 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
126 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
128 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
130 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
132 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
133 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
134 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
136 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
138 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
140 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
142 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
144 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
146 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
148 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
150 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
152 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
154 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
155 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
156 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
157 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
158 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
159 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
160 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
162 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
164 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
165 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
166 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
167 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
171 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
172 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
174 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
175 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
176 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
177 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
178 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
179 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
180 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
181 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
182 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
183 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
184 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
185 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
186 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
187 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
188 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
189 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
190 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
191 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
192 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
193 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
194 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
195 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
196 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
197 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
198 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
199 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
200 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
201 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
202 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
203 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
204 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
206 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
207 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
208 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
209 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
210 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
211 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
212 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
213 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
214 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
215 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
216 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
217 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
218 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
219 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
220 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
223 /* GNU extension to record C++ vtable hierarchy. */
224 static reloc_howto_type elf32_s390_vtinherit_howto =
225 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
226 static reloc_howto_type elf32_s390_vtentry_howto =
227 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
229 static reloc_howto_type *
230 elf_s390_reloc_type_lookup (abfd, code)
231 bfd *abfd ATTRIBUTE_UNUSED;
232 bfd_reloc_code_real_type code;
237 return &elf_howto_table[(int) R_390_NONE];
239 return &elf_howto_table[(int) R_390_8];
240 case BFD_RELOC_390_12:
241 return &elf_howto_table[(int) R_390_12];
243 return &elf_howto_table[(int) R_390_16];
245 return &elf_howto_table[(int) R_390_32];
247 return &elf_howto_table[(int) R_390_32];
248 case BFD_RELOC_32_PCREL:
249 return &elf_howto_table[(int) R_390_PC32];
250 case BFD_RELOC_390_GOT12:
251 return &elf_howto_table[(int) R_390_GOT12];
252 case BFD_RELOC_32_GOT_PCREL:
253 return &elf_howto_table[(int) R_390_GOT32];
254 case BFD_RELOC_390_PLT32:
255 return &elf_howto_table[(int) R_390_PLT32];
256 case BFD_RELOC_390_COPY:
257 return &elf_howto_table[(int) R_390_COPY];
258 case BFD_RELOC_390_GLOB_DAT:
259 return &elf_howto_table[(int) R_390_GLOB_DAT];
260 case BFD_RELOC_390_JMP_SLOT:
261 return &elf_howto_table[(int) R_390_JMP_SLOT];
262 case BFD_RELOC_390_RELATIVE:
263 return &elf_howto_table[(int) R_390_RELATIVE];
264 case BFD_RELOC_32_GOTOFF:
265 return &elf_howto_table[(int) R_390_GOTOFF32];
266 case BFD_RELOC_390_GOTPC:
267 return &elf_howto_table[(int) R_390_GOTPC];
268 case BFD_RELOC_390_GOT16:
269 return &elf_howto_table[(int) R_390_GOT16];
270 case BFD_RELOC_16_PCREL:
271 return &elf_howto_table[(int) R_390_PC16];
272 case BFD_RELOC_390_PC16DBL:
273 return &elf_howto_table[(int) R_390_PC16DBL];
274 case BFD_RELOC_390_PLT16DBL:
275 return &elf_howto_table[(int) R_390_PLT16DBL];
276 case BFD_RELOC_390_PC32DBL:
277 return &elf_howto_table[(int) R_390_PC32DBL];
278 case BFD_RELOC_390_PLT32DBL:
279 return &elf_howto_table[(int) R_390_PLT32DBL];
280 case BFD_RELOC_390_GOTPCDBL:
281 return &elf_howto_table[(int) R_390_GOTPCDBL];
282 case BFD_RELOC_390_GOTENT:
283 return &elf_howto_table[(int) R_390_GOTENT];
284 case BFD_RELOC_16_GOTOFF:
285 return &elf_howto_table[(int) R_390_GOTOFF16];
286 case BFD_RELOC_390_GOTPLT12:
287 return &elf_howto_table[(int) R_390_GOTPLT12];
288 case BFD_RELOC_390_GOTPLT16:
289 return &elf_howto_table[(int) R_390_GOTPLT16];
290 case BFD_RELOC_390_GOTPLT32:
291 return &elf_howto_table[(int) R_390_GOTPLT32];
292 case BFD_RELOC_390_GOTPLTENT:
293 return &elf_howto_table[(int) R_390_GOTPLTENT];
294 case BFD_RELOC_390_PLTOFF16:
295 return &elf_howto_table[(int) R_390_PLTOFF16];
296 case BFD_RELOC_390_PLTOFF32:
297 return &elf_howto_table[(int) R_390_PLTOFF32];
298 case BFD_RELOC_390_TLS_LOAD:
299 return &elf_howto_table[(int) R_390_TLS_LOAD];
300 case BFD_RELOC_390_TLS_GDCALL:
301 return &elf_howto_table[(int) R_390_TLS_GDCALL];
302 case BFD_RELOC_390_TLS_LDCALL:
303 return &elf_howto_table[(int) R_390_TLS_LDCALL];
304 case BFD_RELOC_390_TLS_GD32:
305 return &elf_howto_table[(int) R_390_TLS_GD32];
306 case BFD_RELOC_390_TLS_GOTIE12:
307 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
308 case BFD_RELOC_390_TLS_GOTIE32:
309 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
310 case BFD_RELOC_390_TLS_LDM32:
311 return &elf_howto_table[(int) R_390_TLS_LDM32];
312 case BFD_RELOC_390_TLS_IE32:
313 return &elf_howto_table[(int) R_390_TLS_IE32];
314 case BFD_RELOC_390_TLS_IEENT:
315 return &elf_howto_table[(int) R_390_TLS_IEENT];
316 case BFD_RELOC_390_TLS_LE32:
317 return &elf_howto_table[(int) R_390_TLS_LE32];
318 case BFD_RELOC_390_TLS_LDO32:
319 return &elf_howto_table[(int) R_390_TLS_LDO32];
320 case BFD_RELOC_390_TLS_DTPMOD:
321 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
322 case BFD_RELOC_390_TLS_DTPOFF:
323 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
324 case BFD_RELOC_390_TLS_TPOFF:
325 return &elf_howto_table[(int) R_390_TLS_TPOFF];
326 case BFD_RELOC_390_20:
327 return &elf_howto_table[(int) R_390_20];
328 case BFD_RELOC_390_GOT20:
329 return &elf_howto_table[(int) R_390_GOT20];
330 case BFD_RELOC_390_GOTPLT20:
331 return &elf_howto_table[(int) R_390_GOTPLT20];
332 case BFD_RELOC_390_TLS_GOTIE20:
333 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
334 case BFD_RELOC_VTABLE_INHERIT:
335 return &elf32_s390_vtinherit_howto;
336 case BFD_RELOC_VTABLE_ENTRY:
337 return &elf32_s390_vtentry_howto;
344 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
345 and elf32-s390.c has its own copy. */
348 elf_s390_info_to_howto (abfd, cache_ptr, dst)
349 bfd *abfd ATTRIBUTE_UNUSED;
351 Elf_Internal_Rela *dst;
353 switch (ELF32_R_TYPE(dst->r_info))
355 case R_390_GNU_VTINHERIT:
356 cache_ptr->howto = &elf32_s390_vtinherit_howto;
359 case R_390_GNU_VTENTRY:
360 cache_ptr->howto = &elf32_s390_vtentry_howto;
364 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_390_max);
365 cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)];
369 /* A relocation function which doesn't do anything. */
370 static bfd_reloc_status_type
371 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
372 output_bfd, error_message)
373 bfd *abfd ATTRIBUTE_UNUSED;
374 arelent *reloc_entry;
375 asymbol *symbol ATTRIBUTE_UNUSED;
376 PTR data ATTRIBUTE_UNUSED;
377 asection *input_section;
379 char **error_message ATTRIBUTE_UNUSED;
382 reloc_entry->address += input_section->output_offset;
386 /* Handle the large displacement relocs. */
387 static bfd_reloc_status_type
388 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
389 output_bfd, error_message)
390 bfd *abfd ATTRIBUTE_UNUSED;
391 arelent *reloc_entry;
393 PTR data ATTRIBUTE_UNUSED;
394 asection *input_section;
396 char **error_message ATTRIBUTE_UNUSED;
398 reloc_howto_type *howto = reloc_entry->howto;
402 if (output_bfd != (bfd *) NULL
403 && (symbol->flags & BSF_SECTION_SYM) == 0
404 && (! howto->partial_inplace
405 || reloc_entry->addend == 0))
407 reloc_entry->address += input_section->output_offset;
411 if (output_bfd != NULL)
412 return bfd_reloc_continue;
414 if (reloc_entry->address > input_section->_cooked_size)
415 return bfd_reloc_outofrange;
417 relocation = (symbol->value
418 + symbol->section->output_section->vma
419 + symbol->section->output_offset);
420 relocation += reloc_entry->addend;
421 if (howto->pc_relative)
423 relocation -= (input_section->output_section->vma
424 + input_section->output_offset);
425 relocation -= reloc_entry->address;
428 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
429 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
430 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
432 if ((bfd_signed_vma) relocation < - 0x80000
433 || (bfd_signed_vma) relocation > 0x7ffff)
434 return bfd_reloc_overflow;
440 elf_s390_is_local_label_name (abfd, name)
444 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
447 return _bfd_elf_is_local_label_name (abfd, name);
450 /* Functions for the 390 ELF linker. */
452 /* The name of the dynamic interpreter. This is put in the .interp
455 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
457 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
458 copying dynamic variables from a shared lib into an app's dynbss
459 section, and instead use a dynamic relocation to point into the
461 #define ELIMINATE_COPY_RELOCS 1
463 /* The size in bytes of the first entry in the procedure linkage table. */
464 #define PLT_FIRST_ENTRY_SIZE 32
465 /* The size in bytes of an entry in the procedure linkage table. */
466 #define PLT_ENTRY_SIZE 32
468 #define GOT_ENTRY_SIZE 4
470 /* The first three entries in a procedure linkage table are reserved,
471 and the initial contents are unimportant (we zero them out).
472 Subsequent entries look like this. See the SVR4 ABI 386
473 supplement to see how this works. */
475 /* For the s390, simple addr offset can only be 0 - 4096.
476 To use the full 2 GB address space, several instructions
477 are needed to load an address in a register and execute
478 a branch( or just saving the address)
480 Furthermore, only r 0 and 1 are free to use!!! */
482 /* The first 3 words in the GOT are then reserved.
483 Word 0 is the address of the dynamic table.
484 Word 1 is a pointer to a structure describing the object
485 Word 2 is used to point to the loader entry address.
487 The code for position independand PLT entries looks like this:
489 r12 holds addr of the current GOT at entry to the PLT
491 The GOT holds the address in the PLT to be executed.
492 The loader then gets:
493 24(15) = Pointer to the structure describing the object.
494 28(15) = Offset in symbol table
496 The loader must then find the module where the function is
497 and insert the address in the GOT.
499 Note: 390 can only address +- 64 K relative.
500 We check if offset > 65536, then make a relative branch -64xxx
501 back to a previous defined branch
503 PLT1: BASR 1,0 # 2 bytes
504 L 1,22(1) # 4 bytes Load offset in GOT in r 1
505 L 1,(1,12) # 4 bytes Load address from GOT in r1
506 BCR 15,1 # 2 bytes Jump to address
507 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
508 L 1,14(1) # 4 bytes Load offset in symol table in r1
509 BRC 15,-x # 4 bytes Jump to start of PLT
510 .word 0 # 2 bytes filler
511 .long ? # 4 bytes offset in GOT
512 .long ? # 4 bytes offset into symbol table
514 This was the general case. There are two additional, optimizes PLT
515 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
516 First the one for GOT offsets < 4096:
518 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
519 BCR 15,1 # 2 bytes Jump to address
520 .word 0,0,0 # 6 bytes filler
521 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
522 L 1,14(1) # 4 bytes Load offset in symbol table in r1
523 BRC 15,-x # 4 bytes Jump to start of PLT
524 .word 0,0,0 # 6 bytes filler
525 .long ? # 4 bytes offset into symbol table
527 Second the one for GOT offsets < 32768:
529 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
530 L 1,(1,12) # 4 bytes Load address from GOT to r1
531 BCR 15,1 # 2 bytes Jump to address
532 .word 0 # 2 bytes filler
533 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
534 L 1,14(1) # 4 bytes Load offset in symbol table in r1
535 BRC 15,-x # 4 bytes Jump to start of PLT
536 .word 0,0,0 # 6 bytes filler
537 .long ? # 4 bytes offset into symbol table
539 Total = 32 bytes per PLT entry
541 The code for static build PLT entries looks like this:
543 PLT1: BASR 1,0 # 2 bytes
544 L 1,22(1) # 4 bytes Load address of GOT entry
545 L 1,0(0,1) # 4 bytes Load address from GOT in r1
546 BCR 15,1 # 2 bytes Jump to address
547 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
548 L 1,14(1) # 4 bytes Load offset in symbol table in r1
549 BRC 15,-x # 4 bytes Jump to start of PLT
550 .word 0 # 2 bytes filler
551 .long ? # 4 bytes address of GOT entry
552 .long ? # 4 bytes offset into symbol table */
554 #define PLT_PIC_ENTRY_WORD0 0x0d105810
555 #define PLT_PIC_ENTRY_WORD1 0x10165811
556 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
557 #define PLT_PIC_ENTRY_WORD3 0x0d105810
558 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
560 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
561 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
562 #define PLT_PIC12_ENTRY_WORD2 0x00000000
563 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
564 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
566 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
567 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
568 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
569 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
570 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
572 #define PLT_ENTRY_WORD0 0x0d105810
573 #define PLT_ENTRY_WORD1 0x10165810
574 #define PLT_ENTRY_WORD2 0x100007f1
575 #define PLT_ENTRY_WORD3 0x0d105810
576 #define PLT_ENTRY_WORD4 0x100ea7f4
578 /* The first PLT entry pushes the offset into the symbol table
579 from R1 onto the stack at 8(15) and the loader object info
580 at 12(15), loads the loader address in R1 and jumps to it. */
582 /* The first entry in the PLT for PIC code:
585 ST 1,28(15) # R1 has offset into symbol table
586 L 1,4(12) # Get loader ino(object struct address)
587 ST 1,24(15) # Store address
588 L 1,8(12) # Entry address of loader in R1
589 BR 1 # Jump to loader
591 The first entry in the PLT for static code:
594 ST 1,28(15) # R1 has offset into symbol table
596 L 1,18(0,1) # Get address of GOT
597 MVC 24(4,15),4(1) # Move loader ino to stack
598 L 1,8(1) # Get address of loader
599 BR 1 # Jump to loader
601 .long got # address of GOT */
603 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
604 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
605 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
606 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
607 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
609 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
610 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
611 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
612 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
613 #define PLT_FIRST_ENTRY_WORD4 0x58101008
614 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
616 /* The s390 linker needs to keep track of the number of relocs that it
617 decides to copy as dynamic relocs in check_relocs for each symbol.
618 This is so that it can later discard them if they are found to be
619 unnecessary. We store the information in a field extending the
620 regular ELF linker hash table. */
622 struct elf_s390_dyn_relocs
624 struct elf_s390_dyn_relocs *next;
626 /* The input section of the reloc. */
629 /* Total number of relocs copied for the input section. */
632 /* Number of pc-relative relocs copied for the input section. */
633 bfd_size_type pc_count;
636 /* s390 ELF linker hash entry. */
638 struct elf_s390_link_hash_entry
640 struct elf_link_hash_entry elf;
642 /* Track dynamic relocs copied for this symbol. */
643 struct elf_s390_dyn_relocs *dyn_relocs;
645 /* Number of GOTPLT references for a function. */
646 bfd_signed_vma gotplt_refcount;
648 #define GOT_UNKNOWN 0
652 #define GOT_TLS_IE_NLT 4
653 unsigned char tls_type;
656 #define elf_s390_hash_entry(ent) \
657 ((struct elf_s390_link_hash_entry *)(ent))
659 struct elf_s390_obj_tdata
661 struct elf_obj_tdata root;
663 /* tls_type for each local got entry. */
664 char *local_got_tls_type;
667 #define elf_s390_tdata(abfd) \
668 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
670 #define elf_s390_local_got_tls_type(abfd) \
671 (elf_s390_tdata (abfd)->local_got_tls_type)
674 elf_s390_mkobject (abfd)
677 bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
678 abfd->tdata.any = bfd_zalloc (abfd, amt);
679 if (abfd->tdata.any == NULL)
685 elf_s390_object_p (abfd)
688 /* Allocate our special target data. */
689 struct elf_s390_obj_tdata *new_tdata;
690 bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
691 new_tdata = bfd_zalloc (abfd, amt);
692 if (new_tdata == NULL)
694 new_tdata->root = *abfd->tdata.elf_obj_data;
695 abfd->tdata.any = new_tdata;
696 /* Set the right machine number for an s390 elf32 file. */
697 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
700 /* s390 ELF linker hash table. */
702 struct elf_s390_link_hash_table
704 struct elf_link_hash_table elf;
706 /* Short-cuts to get to dynamic linker sections. */
716 bfd_signed_vma refcount;
720 /* Small local sym to section mapping cache. */
721 struct sym_sec_cache sym_sec;
724 /* Get the s390 ELF linker hash table from a link_info structure. */
726 #define elf_s390_hash_table(p) \
727 ((struct elf_s390_link_hash_table *) ((p)->hash))
729 /* Create an entry in an s390 ELF linker hash table. */
731 static struct bfd_hash_entry *
732 link_hash_newfunc (entry, table, string)
733 struct bfd_hash_entry *entry;
734 struct bfd_hash_table *table;
737 /* Allocate the structure if it has not already been allocated by a
741 entry = bfd_hash_allocate (table,
742 sizeof (struct elf_s390_link_hash_entry));
747 /* Call the allocation method of the superclass. */
748 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
751 struct elf_s390_link_hash_entry *eh;
753 eh = (struct elf_s390_link_hash_entry *) entry;
754 eh->dyn_relocs = NULL;
755 eh->gotplt_refcount = 0;
756 eh->tls_type = GOT_UNKNOWN;
762 /* Create an s390 ELF linker hash table. */
764 static struct bfd_link_hash_table *
765 elf_s390_link_hash_table_create (abfd)
768 struct elf_s390_link_hash_table *ret;
769 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
771 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
775 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
788 ret->tls_ldm_got.refcount = 0;
789 ret->sym_sec.abfd = NULL;
791 return &ret->elf.root;
794 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
795 shortcuts to them in our hash table. */
798 create_got_section (dynobj, info)
800 struct bfd_link_info *info;
802 struct elf_s390_link_hash_table *htab;
804 if (! _bfd_elf_create_got_section (dynobj, info))
807 htab = elf_s390_hash_table (info);
808 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
809 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
810 if (!htab->sgot || !htab->sgotplt)
813 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
814 if (htab->srelgot == NULL
815 || ! bfd_set_section_flags (dynobj, htab->srelgot,
816 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
817 | SEC_IN_MEMORY | SEC_LINKER_CREATED
819 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
824 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
825 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
829 elf_s390_create_dynamic_sections (dynobj, info)
831 struct bfd_link_info *info;
833 struct elf_s390_link_hash_table *htab;
835 htab = elf_s390_hash_table (info);
836 if (!htab->sgot && !create_got_section (dynobj, info))
839 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
842 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
843 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
844 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
846 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
848 if (!htab->splt || !htab->srelplt || !htab->sdynbss
849 || (!info->shared && !htab->srelbss))
855 /* Copy the extra info we tack onto an elf_link_hash_entry. */
858 elf_s390_copy_indirect_symbol (bed, dir, ind)
859 struct elf_backend_data *bed;
860 struct elf_link_hash_entry *dir, *ind;
862 struct elf_s390_link_hash_entry *edir, *eind;
864 edir = (struct elf_s390_link_hash_entry *) dir;
865 eind = (struct elf_s390_link_hash_entry *) ind;
867 if (eind->dyn_relocs != NULL)
869 if (edir->dyn_relocs != NULL)
871 struct elf_s390_dyn_relocs **pp;
872 struct elf_s390_dyn_relocs *p;
874 if (ind->root.type == bfd_link_hash_indirect)
877 /* Add reloc counts against the weak sym to the strong sym
878 list. Merge any entries against the same section. */
879 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
881 struct elf_s390_dyn_relocs *q;
883 for (q = edir->dyn_relocs; q != NULL; q = q->next)
884 if (q->sec == p->sec)
886 q->pc_count += p->pc_count;
887 q->count += p->count;
894 *pp = edir->dyn_relocs;
897 edir->dyn_relocs = eind->dyn_relocs;
898 eind->dyn_relocs = NULL;
901 if (ind->root.type == bfd_link_hash_indirect
902 && dir->got.refcount <= 0)
904 edir->tls_type = eind->tls_type;
905 eind->tls_type = GOT_UNKNOWN;
908 if (ELIMINATE_COPY_RELOCS
909 && ind->root.type != bfd_link_hash_indirect
910 && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
911 /* If called to transfer flags for a weakdef during processing
912 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
913 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
914 dir->elf_link_hash_flags |=
915 (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
916 | ELF_LINK_HASH_REF_REGULAR
917 | ELF_LINK_HASH_REF_REGULAR_NONWEAK));
919 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
923 elf_s390_tls_transition (info, r_type, is_local)
924 struct bfd_link_info *info;
936 return R_390_TLS_LE32;
937 return R_390_TLS_IE32;
938 case R_390_TLS_GOTIE32:
940 return R_390_TLS_LE32;
941 return R_390_TLS_GOTIE32;
942 case R_390_TLS_LDM32:
943 return R_390_TLS_LE32;
949 /* Look through the relocs for a section during the first phase, and
950 allocate space in the global offset table or procedure linkage
954 elf_s390_check_relocs (abfd, info, sec, relocs)
956 struct bfd_link_info *info;
958 const Elf_Internal_Rela *relocs;
960 struct elf_s390_link_hash_table *htab;
961 Elf_Internal_Shdr *symtab_hdr;
962 struct elf_link_hash_entry **sym_hashes;
963 const Elf_Internal_Rela *rel;
964 const Elf_Internal_Rela *rel_end;
966 bfd_signed_vma *local_got_refcounts;
967 int tls_type, old_tls_type;
969 if (info->relocatable)
972 htab = elf_s390_hash_table (info);
973 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
974 sym_hashes = elf_sym_hashes (abfd);
975 local_got_refcounts = elf_local_got_refcounts (abfd);
979 rel_end = relocs + sec->reloc_count;
980 for (rel = relocs; rel < rel_end; rel++)
983 unsigned long r_symndx;
984 struct elf_link_hash_entry *h;
986 r_symndx = ELF32_R_SYM (rel->r_info);
988 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
990 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
991 bfd_archive_filename (abfd),
996 if (r_symndx < symtab_hdr->sh_info)
999 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1001 /* Create got section and local_got_refcounts array if they
1003 r_type = elf_s390_tls_transition (info,
1004 ELF32_R_TYPE (rel->r_info),
1013 case R_390_GOTPLT12:
1014 case R_390_GOTPLT16:
1015 case R_390_GOTPLT20:
1016 case R_390_GOTPLT32:
1017 case R_390_GOTPLTENT:
1018 case R_390_TLS_GD32:
1019 case R_390_TLS_GOTIE12:
1020 case R_390_TLS_GOTIE20:
1021 case R_390_TLS_GOTIE32:
1022 case R_390_TLS_IEENT:
1023 case R_390_TLS_IE32:
1024 case R_390_TLS_LDM32:
1026 && local_got_refcounts == NULL)
1030 size = symtab_hdr->sh_info;
1031 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1032 local_got_refcounts = ((bfd_signed_vma *)
1033 bfd_zalloc (abfd, size));
1034 if (local_got_refcounts == NULL)
1036 elf_local_got_refcounts (abfd) = local_got_refcounts;
1037 elf_s390_local_got_tls_type (abfd)
1038 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1041 case R_390_GOTOFF16:
1042 case R_390_GOTOFF32:
1044 case R_390_GOTPCDBL:
1045 if (htab->sgot == NULL)
1047 if (htab->elf.dynobj == NULL)
1048 htab->elf.dynobj = abfd;
1049 if (!create_got_section (htab->elf.dynobj, info))
1056 case R_390_GOTOFF16:
1057 case R_390_GOTOFF32:
1059 case R_390_GOTPCDBL:
1060 /* Got is created, nothing to be done. */
1063 case R_390_PLT16DBL:
1064 case R_390_PLT32DBL:
1066 case R_390_PLTOFF16:
1067 case R_390_PLTOFF32:
1068 /* This symbol requires a procedure linkage table entry. We
1069 actually build the entry in adjust_dynamic_symbol,
1070 because this might be a case of linking PIC code which is
1071 never referenced by a dynamic object, in which case we
1072 don't need to generate a procedure linkage table entry
1075 /* If this is a local symbol, we resolve it directly without
1076 creating a procedure linkage table entry. */
1079 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1080 h->plt.refcount += 1;
1084 case R_390_GOTPLT12:
1085 case R_390_GOTPLT16:
1086 case R_390_GOTPLT20:
1087 case R_390_GOTPLT32:
1088 case R_390_GOTPLTENT:
1089 /* This symbol requires either a procedure linkage table entry
1090 or an entry in the local got. We actually build the entry
1091 in adjust_dynamic_symbol because whether this is really a
1092 global reference can change and with it the fact if we have
1093 to create a plt entry or a local got entry. To be able to
1094 make a once global symbol a local one we have to keep track
1095 of the number of gotplt references that exist for this
1099 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1100 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1101 h->plt.refcount += 1;
1104 local_got_refcounts[r_symndx] += 1;
1107 case R_390_TLS_LDM32:
1108 htab->tls_ldm_got.refcount += 1;
1111 case R_390_TLS_IE32:
1112 case R_390_TLS_GOTIE12:
1113 case R_390_TLS_GOTIE20:
1114 case R_390_TLS_GOTIE32:
1115 case R_390_TLS_IEENT:
1117 info->flags |= DF_STATIC_TLS;
1125 case R_390_TLS_GD32:
1126 /* This symbol requires a global offset table entry. */
1135 tls_type = GOT_NORMAL;
1137 case R_390_TLS_GD32:
1138 tls_type = GOT_TLS_GD;
1140 case R_390_TLS_IE32:
1141 case R_390_TLS_GOTIE32:
1142 tls_type = GOT_TLS_IE;
1144 case R_390_TLS_GOTIE12:
1145 case R_390_TLS_GOTIE20:
1146 case R_390_TLS_IEENT:
1147 tls_type = GOT_TLS_IE_NLT;
1153 h->got.refcount += 1;
1154 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1158 local_got_refcounts[r_symndx] += 1;
1159 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1161 /* If a TLS symbol is accessed using IE at least once,
1162 there is no point to use dynamic model for it. */
1163 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1165 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1167 (*_bfd_error_handler)
1168 (_("%s: `%s' accessed both as normal and thread local symbol"),
1169 bfd_archive_filename (abfd), h->root.root.string);
1172 if (old_tls_type > tls_type)
1173 tls_type = old_tls_type;
1176 if (old_tls_type != tls_type)
1179 elf_s390_hash_entry (h)->tls_type = tls_type;
1181 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1184 if (r_type != R_390_TLS_IE32)
1188 case R_390_TLS_LE32:
1191 info->flags |= DF_STATIC_TLS;
1201 if (h != NULL && !info->shared)
1203 /* If this reloc is in a read-only section, we might
1204 need a copy reloc. We can't check reliably at this
1205 stage whether the section is read-only, as input
1206 sections have not yet been mapped to output sections.
1207 Tentatively set the flag for now, and correct in
1208 adjust_dynamic_symbol. */
1209 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1211 /* We may need a .plt entry if the function this reloc
1212 refers to is in a shared lib. */
1213 h->plt.refcount += 1;
1216 /* If we are creating a shared library, and this is a reloc
1217 against a global symbol, or a non PC relative reloc
1218 against a local symbol, then we need to copy the reloc
1219 into the shared library. However, if we are linking with
1220 -Bsymbolic, we do not need to copy a reloc against a
1221 global symbol which is defined in an object we are
1222 including in the link (i.e., DEF_REGULAR is set). At
1223 this point we have not seen all the input files, so it is
1224 possible that DEF_REGULAR is not set now but will be set
1225 later (it is never cleared). In case of a weak definition,
1226 DEF_REGULAR may be cleared later by a strong definition in
1227 a shared library. We account for that possibility below by
1228 storing information in the relocs_copied field of the hash
1229 table entry. A similar situation occurs when creating
1230 shared libraries and symbol visibility changes render the
1233 If on the other hand, we are creating an executable, we
1234 may need to keep relocations for symbols satisfied by a
1235 dynamic library if we manage to avoid copy relocs for the
1238 && (sec->flags & SEC_ALLOC) != 0
1239 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1240 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1241 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1242 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1244 && (! info->symbolic
1245 || h->root.type == bfd_link_hash_defweak
1246 || (h->elf_link_hash_flags
1247 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1248 || (ELIMINATE_COPY_RELOCS
1250 && (sec->flags & SEC_ALLOC) != 0
1252 && (h->root.type == bfd_link_hash_defweak
1253 || (h->elf_link_hash_flags
1254 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1256 struct elf_s390_dyn_relocs *p;
1257 struct elf_s390_dyn_relocs **head;
1259 /* We must copy these reloc types into the output file.
1260 Create a reloc section in dynobj and make room for
1267 name = (bfd_elf_string_from_elf_section
1269 elf_elfheader (abfd)->e_shstrndx,
1270 elf_section_data (sec)->rel_hdr.sh_name));
1274 if (strncmp (name, ".rela", 5) != 0
1275 || strcmp (bfd_get_section_name (abfd, sec),
1278 (*_bfd_error_handler)
1279 (_("%s: bad relocation section name `%s\'"),
1280 bfd_archive_filename (abfd), name);
1283 if (htab->elf.dynobj == NULL)
1284 htab->elf.dynobj = abfd;
1286 dynobj = htab->elf.dynobj;
1287 sreloc = bfd_get_section_by_name (dynobj, name);
1292 sreloc = bfd_make_section (dynobj, name);
1293 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1294 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1295 if ((sec->flags & SEC_ALLOC) != 0)
1296 flags |= SEC_ALLOC | SEC_LOAD;
1298 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1299 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1302 elf_section_data (sec)->sreloc = sreloc;
1305 /* If this is a global symbol, we count the number of
1306 relocations we need for this symbol. */
1309 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1313 /* Track dynamic relocs needed for local syms too.
1314 We really need local syms available to do this
1318 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1323 head = ((struct elf_s390_dyn_relocs **)
1324 &elf_section_data (s)->local_dynrel);
1328 if (p == NULL || p->sec != sec)
1330 bfd_size_type amt = sizeof *p;
1332 p = ((struct elf_s390_dyn_relocs *)
1333 bfd_alloc (htab->elf.dynobj, amt));
1344 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1345 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1346 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1347 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1352 /* This relocation describes the C++ object vtable hierarchy.
1353 Reconstruct it for later use during GC. */
1354 case R_390_GNU_VTINHERIT:
1355 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1359 /* This relocation describes which C++ vtable entries are actually
1360 used. Record for later use during GC. */
1361 case R_390_GNU_VTENTRY:
1362 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1374 /* Return the section that should be marked against GC for a given
1378 elf_s390_gc_mark_hook (sec, info, rel, h, sym)
1380 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1381 Elf_Internal_Rela *rel;
1382 struct elf_link_hash_entry *h;
1383 Elf_Internal_Sym *sym;
1387 switch (ELF32_R_TYPE (rel->r_info))
1389 case R_390_GNU_VTINHERIT:
1390 case R_390_GNU_VTENTRY:
1394 switch (h->root.type)
1396 case bfd_link_hash_defined:
1397 case bfd_link_hash_defweak:
1398 return h->root.u.def.section;
1400 case bfd_link_hash_common:
1401 return h->root.u.c.p->section;
1409 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1414 /* Update the got entry reference counts for the section being removed. */
1417 elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
1419 struct bfd_link_info *info;
1421 const Elf_Internal_Rela *relocs;
1423 Elf_Internal_Shdr *symtab_hdr;
1424 struct elf_link_hash_entry **sym_hashes;
1425 bfd_signed_vma *local_got_refcounts;
1426 const Elf_Internal_Rela *rel, *relend;
1428 elf_section_data (sec)->local_dynrel = NULL;
1430 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1431 sym_hashes = elf_sym_hashes (abfd);
1432 local_got_refcounts = elf_local_got_refcounts (abfd);
1434 relend = relocs + sec->reloc_count;
1435 for (rel = relocs; rel < relend; rel++)
1437 unsigned long r_symndx;
1438 unsigned int r_type;
1439 struct elf_link_hash_entry *h = NULL;
1441 r_symndx = ELF32_R_SYM (rel->r_info);
1442 if (r_symndx >= symtab_hdr->sh_info)
1444 struct elf_s390_link_hash_entry *eh;
1445 struct elf_s390_dyn_relocs **pp;
1446 struct elf_s390_dyn_relocs *p;
1448 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1449 eh = (struct elf_s390_link_hash_entry *) h;
1451 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1454 /* Everything must go for SEC. */
1460 r_type = ELF32_R_TYPE (rel->r_info);
1461 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1464 case R_390_TLS_LDM32:
1465 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1466 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1469 case R_390_TLS_GD32:
1470 case R_390_TLS_IE32:
1471 case R_390_TLS_GOTIE12:
1472 case R_390_TLS_GOTIE20:
1473 case R_390_TLS_GOTIE32:
1474 case R_390_TLS_IEENT:
1479 case R_390_GOTOFF16:
1480 case R_390_GOTOFF32:
1482 case R_390_GOTPCDBL:
1486 if (h->got.refcount > 0)
1487 h->got.refcount -= 1;
1489 else if (local_got_refcounts != NULL)
1491 if (local_got_refcounts[r_symndx] > 0)
1492 local_got_refcounts[r_symndx] -= 1;
1509 case R_390_PLT16DBL:
1510 case R_390_PLT32DBL:
1512 case R_390_PLTOFF16:
1513 case R_390_PLTOFF32:
1516 if (h->plt.refcount > 0)
1517 h->plt.refcount -= 1;
1521 case R_390_GOTPLT12:
1522 case R_390_GOTPLT16:
1523 case R_390_GOTPLT20:
1524 case R_390_GOTPLT32:
1525 case R_390_GOTPLTENT:
1528 if (h->plt.refcount > 0)
1530 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1531 h->plt.refcount -= 1;
1534 else if (local_got_refcounts != NULL)
1536 if (local_got_refcounts[r_symndx] > 0)
1537 local_got_refcounts[r_symndx] -= 1;
1549 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1550 entry but we found we will not create any. Called when we find we will
1551 not have any PLT for this symbol, by for example
1552 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1553 or elf_s390_size_dynamic_sections if no dynamic sections will be
1554 created (we're only linking static objects). */
1557 elf_s390_adjust_gotplt (h)
1558 struct elf_s390_link_hash_entry *h;
1560 if (h->elf.root.type == bfd_link_hash_warning)
1561 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1563 if (h->gotplt_refcount <= 0)
1566 /* We simply add the number of gotplt references to the number
1567 * of got references for this symbol. */
1568 h->elf.got.refcount += h->gotplt_refcount;
1569 h->gotplt_refcount = -1;
1572 /* Adjust a symbol defined by a dynamic object and referenced by a
1573 regular object. The current definition is in some section of the
1574 dynamic object, but we're not including those sections. We have to
1575 change the definition to something the rest of the link can
1579 elf_s390_adjust_dynamic_symbol (info, h)
1580 struct bfd_link_info *info;
1581 struct elf_link_hash_entry *h;
1583 struct elf_s390_link_hash_table *htab;
1585 unsigned int power_of_two;
1587 /* If this is a function, put it in the procedure linkage table. We
1588 will fill in the contents of the procedure linkage table later
1589 (although we could actually do it here). */
1590 if (h->type == STT_FUNC
1591 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1593 if (h->plt.refcount <= 0
1595 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1596 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1597 && h->root.type != bfd_link_hash_undefweak
1598 && h->root.type != bfd_link_hash_undefined))
1600 /* This case can occur if we saw a PLT32 reloc in an input
1601 file, but the symbol was never referred to by a dynamic
1602 object, or if all references were garbage collected. In
1603 such a case, we don't actually need to build a procedure
1604 linkage table, and we can just do a PC32 reloc instead. */
1605 h->plt.offset = (bfd_vma) -1;
1606 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1607 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1613 /* It's possible that we incorrectly decided a .plt reloc was
1614 needed for an R_390_PC32 reloc to a non-function sym in
1615 check_relocs. We can't decide accurately between function and
1616 non-function syms in check-relocs; Objects loaded later in
1617 the link may change h->type. So fix it now. */
1618 h->plt.offset = (bfd_vma) -1;
1620 /* If this is a weak symbol, and there is a real definition, the
1621 processor independent code will have arranged for us to see the
1622 real definition first, and we can just use the same value. */
1623 if (h->weakdef != NULL)
1625 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1626 || h->weakdef->root.type == bfd_link_hash_defweak);
1627 h->root.u.def.section = h->weakdef->root.u.def.section;
1628 h->root.u.def.value = h->weakdef->root.u.def.value;
1629 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1630 h->elf_link_hash_flags
1631 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
1632 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
1636 /* This is a reference to a symbol defined by a dynamic object which
1637 is not a function. */
1639 /* If we are creating a shared library, we must presume that the
1640 only references to the symbol are via the global offset table.
1641 For such cases we need not do anything here; the relocations will
1642 be handled correctly by relocate_section. */
1646 /* If there are no references to this symbol that do not use the
1647 GOT, we don't need to generate a copy reloc. */
1648 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1651 /* If -z nocopyreloc was given, we won't generate them either. */
1652 if (info->nocopyreloc)
1654 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1658 if (ELIMINATE_COPY_RELOCS)
1660 struct elf_s390_link_hash_entry * eh;
1661 struct elf_s390_dyn_relocs *p;
1663 eh = (struct elf_s390_link_hash_entry *) h;
1664 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1666 s = p->sec->output_section;
1667 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1671 /* If we didn't find any dynamic relocs in read-only sections, then
1672 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1675 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1680 /* We must allocate the symbol in our .dynbss section, which will
1681 become part of the .bss section of the executable. There will be
1682 an entry for this symbol in the .dynsym section. The dynamic
1683 object will contain position independent code, so all references
1684 from the dynamic object to this symbol will go through the global
1685 offset table. The dynamic linker will use the .dynsym entry to
1686 determine the address it must put in the global offset table, so
1687 both the dynamic object and the regular object will refer to the
1688 same memory location for the variable. */
1690 htab = elf_s390_hash_table (info);
1692 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1693 copy the initial value out of the dynamic object and into the
1694 runtime process image. */
1695 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1697 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1698 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1701 /* We need to figure out the alignment required for this symbol. I
1702 have no idea how ELF linkers handle this. */
1703 power_of_two = bfd_log2 (h->size);
1704 if (power_of_two > 3)
1707 /* Apply the required alignment. */
1709 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
1710 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1712 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1716 /* Define the symbol as being at this point in the section. */
1717 h->root.u.def.section = s;
1718 h->root.u.def.value = s->_raw_size;
1720 /* Increment the section size to make room for the symbol. */
1721 s->_raw_size += h->size;
1726 /* This is the condition under which elf_s390_finish_dynamic_symbol
1727 will be called from elflink.h. If elflink.h doesn't call our
1728 finish_dynamic_symbol routine, we'll need to do something about
1729 initializing any .plt and .got entries in elf_s390_relocate_section. */
1730 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
1733 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1734 && ((H)->dynindx != -1 \
1735 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1737 /* Allocate space in .plt, .got and associated reloc sections for
1741 allocate_dynrelocs (h, inf)
1742 struct elf_link_hash_entry *h;
1745 struct bfd_link_info *info;
1746 struct elf_s390_link_hash_table *htab;
1747 struct elf_s390_link_hash_entry *eh;
1748 struct elf_s390_dyn_relocs *p;
1750 if (h->root.type == bfd_link_hash_indirect)
1753 if (h->root.type == bfd_link_hash_warning)
1754 /* When warning symbols are created, they **replace** the "real"
1755 entry in the hash table, thus we never get to see the real
1756 symbol in a hash traversal. So look at it now. */
1757 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1759 info = (struct bfd_link_info *) inf;
1760 htab = elf_s390_hash_table (info);
1762 if (htab->elf.dynamic_sections_created
1763 && h->plt.refcount > 0
1764 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1765 || h->root.type != bfd_link_hash_undefweak))
1767 /* Make sure this symbol is output as a dynamic symbol.
1768 Undefined weak syms won't yet be marked as dynamic. */
1769 if (h->dynindx == -1
1770 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1772 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1777 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1779 asection *s = htab->splt;
1781 /* If this is the first .plt entry, make room for the special
1783 if (s->_raw_size == 0)
1784 s->_raw_size += PLT_FIRST_ENTRY_SIZE;
1786 h->plt.offset = s->_raw_size;
1788 /* If this symbol is not defined in a regular file, and we are
1789 not generating a shared library, then set the symbol to this
1790 location in the .plt. This is required to make function
1791 pointers compare as equal between the normal executable and
1792 the shared library. */
1794 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1796 h->root.u.def.section = s;
1797 h->root.u.def.value = h->plt.offset;
1800 /* Make room for this entry. */
1801 s->_raw_size += PLT_ENTRY_SIZE;
1803 /* We also need to make an entry in the .got.plt section, which
1804 will be placed in the .got section by the linker script. */
1805 htab->sgotplt->_raw_size += GOT_ENTRY_SIZE;
1807 /* We also need to make an entry in the .rela.plt section. */
1808 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
1812 h->plt.offset = (bfd_vma) -1;
1813 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1814 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1819 h->plt.offset = (bfd_vma) -1;
1820 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1821 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1824 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1825 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1826 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1827 we can save the dynamic TLS relocation. */
1828 if (h->got.refcount > 0
1831 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1833 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1834 /* For the GOTIE access without a literal pool entry the offset has
1835 to be stored somewhere. The immediate value in the instruction
1836 is not bit enough so the value is stored in the got. */
1838 h->got.offset = htab->sgot->_raw_size;
1839 htab->sgot->_raw_size += GOT_ENTRY_SIZE;
1842 h->got.offset = (bfd_vma) -1;
1844 else if (h->got.refcount > 0)
1848 int tls_type = elf_s390_hash_entry(h)->tls_type;
1850 /* Make sure this symbol is output as a dynamic symbol.
1851 Undefined weak syms won't yet be marked as dynamic. */
1852 if (h->dynindx == -1
1853 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1855 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1860 h->got.offset = s->_raw_size;
1861 s->_raw_size += GOT_ENTRY_SIZE;
1862 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1863 if (tls_type == GOT_TLS_GD)
1864 s->_raw_size += GOT_ENTRY_SIZE;
1865 dyn = htab->elf.dynamic_sections_created;
1866 /* R_390_TLS_IE32 needs one dynamic relocation,
1867 R_390_TLS_GD32 needs one if local symbol and two if global. */
1868 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1869 || tls_type >= GOT_TLS_IE)
1870 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1871 else if (tls_type == GOT_TLS_GD)
1872 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
1873 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1874 || h->root.type != bfd_link_hash_undefweak)
1876 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1877 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1880 h->got.offset = (bfd_vma) -1;
1882 eh = (struct elf_s390_link_hash_entry *) h;
1883 if (eh->dyn_relocs == NULL)
1886 /* In the shared -Bsymbolic case, discard space allocated for
1887 dynamic pc-relative relocs against symbols which turn out to be
1888 defined in regular objects. For the normal shared case, discard
1889 space for pc-relative relocs that have become local due to symbol
1890 visibility changes. */
1894 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1895 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
1898 struct elf_s390_dyn_relocs **pp;
1900 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1902 p->count -= p->pc_count;
1911 /* Also discard relocs on undefined weak syms with non-default
1913 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1914 && h->root.type == bfd_link_hash_undefweak)
1915 eh->dyn_relocs = NULL;
1917 else if (ELIMINATE_COPY_RELOCS)
1919 /* For the non-shared case, discard space for relocs against
1920 symbols which turn out to need copy relocs or are not
1923 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1924 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1925 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1926 || (htab->elf.dynamic_sections_created
1927 && (h->root.type == bfd_link_hash_undefweak
1928 || h->root.type == bfd_link_hash_undefined))))
1930 /* Make sure this symbol is output as a dynamic symbol.
1931 Undefined weak syms won't yet be marked as dynamic. */
1932 if (h->dynindx == -1
1933 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1935 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1939 /* If that succeeded, we know we'll be keeping all the
1941 if (h->dynindx != -1)
1945 eh->dyn_relocs = NULL;
1950 /* Finally, allocate space. */
1951 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1953 asection *sreloc = elf_section_data (p->sec)->sreloc;
1955 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
1961 /* Find any dynamic relocs that apply to read-only sections. */
1964 readonly_dynrelocs (h, inf)
1965 struct elf_link_hash_entry *h;
1968 struct elf_s390_link_hash_entry *eh;
1969 struct elf_s390_dyn_relocs *p;
1971 if (h->root.type == bfd_link_hash_warning)
1972 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1974 eh = (struct elf_s390_link_hash_entry *) h;
1975 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1977 asection *s = p->sec->output_section;
1979 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1981 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1983 info->flags |= DF_TEXTREL;
1985 /* Not an error, just cut short the traversal. */
1992 /* Set the sizes of the dynamic sections. */
1995 elf_s390_size_dynamic_sections (output_bfd, info)
1996 bfd *output_bfd ATTRIBUTE_UNUSED;
1997 struct bfd_link_info *info;
1999 struct elf_s390_link_hash_table *htab;
2005 htab = elf_s390_hash_table (info);
2006 dynobj = htab->elf.dynobj;
2010 if (htab->elf.dynamic_sections_created)
2012 /* Set the contents of the .interp section to the interpreter. */
2013 if (info->executable)
2015 s = bfd_get_section_by_name (dynobj, ".interp");
2018 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2019 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2023 /* Set up .got offsets for local syms, and space for local dynamic
2025 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2027 bfd_signed_vma *local_got;
2028 bfd_signed_vma *end_local_got;
2029 char *local_tls_type;
2030 bfd_size_type locsymcount;
2031 Elf_Internal_Shdr *symtab_hdr;
2034 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2037 for (s = ibfd->sections; s != NULL; s = s->next)
2039 struct elf_s390_dyn_relocs *p;
2041 for (p = *((struct elf_s390_dyn_relocs **)
2042 &elf_section_data (s)->local_dynrel);
2046 if (!bfd_is_abs_section (p->sec)
2047 && bfd_is_abs_section (p->sec->output_section))
2049 /* Input section has been discarded, either because
2050 it is a copy of a linkonce section or due to
2051 linker script /DISCARD/, so we'll be discarding
2054 else if (p->count != 0)
2056 srela = elf_section_data (p->sec)->sreloc;
2057 srela->_raw_size += p->count * sizeof (Elf32_External_Rela);
2058 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2059 info->flags |= DF_TEXTREL;
2064 local_got = elf_local_got_refcounts (ibfd);
2068 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2069 locsymcount = symtab_hdr->sh_info;
2070 end_local_got = local_got + locsymcount;
2071 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2073 srela = htab->srelgot;
2074 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2078 *local_got = s->_raw_size;
2079 s->_raw_size += GOT_ENTRY_SIZE;
2080 if (*local_tls_type == GOT_TLS_GD)
2081 s->_raw_size += GOT_ENTRY_SIZE;
2083 srela->_raw_size += sizeof (Elf32_External_Rela);
2086 *local_got = (bfd_vma) -1;
2090 if (htab->tls_ldm_got.refcount > 0)
2092 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2094 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
2095 htab->sgot->_raw_size += 2 * GOT_ENTRY_SIZE;
2096 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
2099 htab->tls_ldm_got.offset = -1;
2101 /* Allocate global sym .plt and .got entries, and space for global
2102 sym dynamic relocs. */
2103 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2105 /* We now have determined the sizes of the various dynamic sections.
2106 Allocate memory for them. */
2108 for (s = dynobj->sections; s != NULL; s = s->next)
2110 if ((s->flags & SEC_LINKER_CREATED) == 0)
2115 || s == htab->sgotplt)
2117 /* Strip this section if we don't need it; see the
2120 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2122 if (s->_raw_size != 0)
2125 /* We use the reloc_count field as a counter if we need
2126 to copy relocs into the output file. */
2131 /* It's not one of our sections, so don't allocate space. */
2135 if (s->_raw_size == 0)
2137 /* If we don't need this section, strip it from the
2138 output file. This is to handle .rela.bss and
2139 .rela.plt. We must create it in
2140 create_dynamic_sections, because it must be created
2141 before the linker maps input sections to output
2142 sections. The linker does that before
2143 adjust_dynamic_symbol is called, and it is that
2144 function which decides whether anything needs to go
2145 into these sections. */
2147 _bfd_strip_section_from_output (info, s);
2151 /* Allocate memory for the section contents. We use bfd_zalloc
2152 here in case unused entries are not reclaimed before the
2153 section's contents are written out. This should not happen,
2154 but this way if it does, we get a R_390_NONE reloc instead
2156 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2157 if (s->contents == NULL)
2161 if (htab->elf.dynamic_sections_created)
2163 /* Add some entries to the .dynamic section. We fill in the
2164 values later, in elf_s390_finish_dynamic_sections, but we
2165 must add the entries now so that we get the correct size for
2166 the .dynamic section. The DT_DEBUG entry is filled in by the
2167 dynamic linker and used by the debugger. */
2168 #define add_dynamic_entry(TAG, VAL) \
2169 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2171 if (info->executable)
2173 if (!add_dynamic_entry (DT_DEBUG, 0))
2177 if (htab->splt->_raw_size != 0)
2179 if (!add_dynamic_entry (DT_PLTGOT, 0)
2180 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2181 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2182 || !add_dynamic_entry (DT_JMPREL, 0))
2188 if (!add_dynamic_entry (DT_RELA, 0)
2189 || !add_dynamic_entry (DT_RELASZ, 0)
2190 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2193 /* If any dynamic relocs apply to a read-only section,
2194 then we need a DT_TEXTREL entry. */
2195 if ((info->flags & DF_TEXTREL) == 0)
2196 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2199 if ((info->flags & DF_TEXTREL) != 0)
2201 if (!add_dynamic_entry (DT_TEXTREL, 0))
2206 #undef add_dynamic_entry
2211 /* Return the base VMA address which should be subtracted from real addresses
2212 when resolving @dtpoff relocation.
2213 This is PT_TLS segment p_vaddr. */
2217 struct bfd_link_info *info;
2219 /* If tls_segment is NULL, we should have signalled an error already. */
2220 if (elf_hash_table (info)->tls_segment == NULL)
2222 return elf_hash_table (info)->tls_segment->start;
2225 /* Return the relocation value for @tpoff relocation
2226 if STT_TLS virtual address is ADDRESS. */
2229 tpoff (info, address)
2230 struct bfd_link_info *info;
2233 struct elf_link_tls_segment *tls_segment
2234 = elf_hash_table (info)->tls_segment;
2236 /* If tls_segment is NULL, we should have signalled an error already. */
2237 if (tls_segment == NULL)
2239 return (align_power (tls_segment->size, tls_segment->align)
2240 + tls_segment->start - address);
2243 /* Complain if TLS instruction relocation is against an invalid
2247 invalid_tls_insn (input_bfd, input_section, rel)
2249 asection *input_section;
2250 Elf_Internal_Rela *rel;
2252 reloc_howto_type *howto;
2254 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2255 (*_bfd_error_handler)
2256 (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"),
2257 bfd_archive_filename (input_bfd),
2258 bfd_get_section_name (input_bfd, input_section),
2259 (long) rel->r_offset,
2263 /* Relocate a 390 ELF section. */
2266 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2267 contents, relocs, local_syms, local_sections)
2269 struct bfd_link_info *info;
2271 asection *input_section;
2273 Elf_Internal_Rela *relocs;
2274 Elf_Internal_Sym *local_syms;
2275 asection **local_sections;
2277 struct elf_s390_link_hash_table *htab;
2278 Elf_Internal_Shdr *symtab_hdr;
2279 struct elf_link_hash_entry **sym_hashes;
2280 bfd_vma *local_got_offsets;
2281 Elf_Internal_Rela *rel;
2282 Elf_Internal_Rela *relend;
2284 if (info->relocatable)
2287 htab = elf_s390_hash_table (info);
2288 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2289 sym_hashes = elf_sym_hashes (input_bfd);
2290 local_got_offsets = elf_local_got_offsets (input_bfd);
2293 relend = relocs + input_section->reloc_count;
2294 for (; rel < relend; rel++)
2296 unsigned int r_type;
2297 reloc_howto_type *howto;
2298 unsigned long r_symndx;
2299 struct elf_link_hash_entry *h;
2300 Elf_Internal_Sym *sym;
2304 bfd_boolean unresolved_reloc;
2305 bfd_reloc_status_type r;
2308 r_type = ELF32_R_TYPE (rel->r_info);
2309 if (r_type == (int) R_390_GNU_VTINHERIT
2310 || r_type == (int) R_390_GNU_VTENTRY)
2312 if (r_type >= (int) R_390_max)
2314 bfd_set_error (bfd_error_bad_value);
2318 howto = elf_howto_table + r_type;
2319 r_symndx = ELF32_R_SYM (rel->r_info);
2321 /* This is a final link. */
2325 unresolved_reloc = FALSE;
2326 if (r_symndx < symtab_hdr->sh_info)
2328 sym = local_syms + r_symndx;
2329 sec = local_sections[r_symndx];
2330 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
2334 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2335 while (h->root.type == bfd_link_hash_indirect
2336 || h->root.type == bfd_link_hash_warning)
2337 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2339 if (h->root.type == bfd_link_hash_defined
2340 || h->root.type == bfd_link_hash_defweak)
2342 sec = h->root.u.def.section;
2343 if (sec->output_section == NULL)
2345 /* Set a flag that will be cleared later if we find a
2346 relocation value for this symbol. output_section
2347 is typically NULL for symbols satisfied by a shared
2349 unresolved_reloc = TRUE;
2353 relocation = (h->root.u.def.value
2354 + sec->output_section->vma
2355 + sec->output_offset);
2357 else if (h->root.type == bfd_link_hash_undefweak)
2359 else if (!info->executable
2360 && !info->no_undefined
2361 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2365 if (! ((*info->callbacks->undefined_symbol)
2366 (info, h->root.root.string, input_bfd,
2367 input_section, rel->r_offset,
2368 (!info->shared || info->no_undefined
2369 || ELF_ST_VISIBILITY (h->other)))))
2377 case R_390_GOTPLT12:
2378 case R_390_GOTPLT16:
2379 case R_390_GOTPLT20:
2380 case R_390_GOTPLT32:
2381 case R_390_GOTPLTENT:
2382 /* There are three cases for a GOTPLT relocation. 1) The
2383 relocation is against the jump slot entry of a plt that
2384 will get emitted to the output file. 2) The relocation
2385 is against the jump slot of a plt entry that has been
2386 removed. elf_s390_adjust_gotplt has created a GOT entry
2387 as replacement. 3) The relocation is against a local symbol.
2388 Cases 2) and 3) are the same as the GOT relocation code
2389 so we just have to test for case 1 and fall through for
2391 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2396 Current offset - size first entry / entry size. */
2397 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2400 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2402 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2403 unresolved_reloc = FALSE;
2405 if (r_type == R_390_GOTPLTENT)
2406 relocation += htab->sgot->output_section->vma;
2416 /* Relocation is to the entry for this symbol in the global
2418 if (htab->sgot == NULL)
2425 off = h->got.offset;
2426 dyn = htab->elf.dynamic_sections_created;
2427 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2431 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2432 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
2433 || (ELF_ST_VISIBILITY (h->other)
2434 && h->root.type == bfd_link_hash_undefweak))
2436 /* This is actually a static link, or it is a
2437 -Bsymbolic link and the symbol is defined
2438 locally, or the symbol was forced to be local
2439 because of a version file. We must initialize
2440 this entry in the global offset table. Since the
2441 offset must always be a multiple of 2, we use the
2442 least significant bit to record whether we have
2443 initialized it already.
2445 When doing a dynamic link, we create a .rel.got
2446 relocation entry to initialize the value. This
2447 is done in the finish_dynamic_symbol routine. */
2452 bfd_put_32 (output_bfd, relocation,
2453 htab->sgot->contents + off);
2458 unresolved_reloc = FALSE;
2462 if (local_got_offsets == NULL)
2465 off = local_got_offsets[r_symndx];
2467 /* The offset must always be a multiple of 4. We use
2468 the least significant bit to record whether we have
2469 already generated the necessary reloc. */
2474 bfd_put_32 (output_bfd, relocation,
2475 htab->sgot->contents + off);
2480 Elf_Internal_Rela outrel;
2483 srelgot = htab->srelgot;
2484 if (srelgot == NULL)
2487 outrel.r_offset = (htab->sgot->output_section->vma
2488 + htab->sgot->output_offset
2490 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2491 outrel.r_addend = relocation;
2492 loc = srelgot->contents;
2493 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2494 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2497 local_got_offsets[r_symndx] |= 1;
2501 if (off >= (bfd_vma) -2)
2504 relocation = htab->sgot->output_offset + off;
2506 /* For @GOTENT the relocation is against the offset between
2507 the instruction and the symbols entry in the GOT and not
2508 between the start of the GOT and the symbols entry. We
2509 add the vma of the GOT to get the correct value. */
2510 if ( r_type == R_390_GOTENT
2511 || r_type == R_390_GOTPLTENT)
2512 relocation += htab->sgot->output_section->vma;
2516 case R_390_GOTOFF16:
2517 case R_390_GOTOFF32:
2518 /* Relocation is relative to the start of the global offset
2521 /* Note that sgot->output_offset is not involved in this
2522 calculation. We always want the start of .got. If we
2523 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2524 permitted by the ABI, we might have to change this
2526 relocation -= htab->sgot->output_section->vma;
2530 case R_390_GOTPCDBL:
2531 /* Use global offset table as symbol value. */
2532 relocation = htab->sgot->output_section->vma;
2533 unresolved_reloc = FALSE;
2536 case R_390_PLT16DBL:
2537 case R_390_PLT32DBL:
2539 /* Relocation is to the entry for this symbol in the
2540 procedure linkage table. */
2542 /* Resolve a PLT32 reloc against a local symbol directly,
2543 without using the procedure linkage table. */
2547 if (h->plt.offset == (bfd_vma) -1
2548 || htab->splt == NULL)
2550 /* We didn't make a PLT entry for this symbol. This
2551 happens when statically linking PIC code, or when
2552 using -Bsymbolic. */
2556 relocation = (htab->splt->output_section->vma
2557 + htab->splt->output_offset
2559 unresolved_reloc = FALSE;
2562 case R_390_PLTOFF16:
2563 case R_390_PLTOFF32:
2564 /* Relocation is to the entry for this symbol in the
2565 procedure linkage table relative to the start of the GOT. */
2567 /* For local symbols or if we didn't make a PLT entry for
2568 this symbol resolve the symbol directly. */
2570 || h->plt.offset == (bfd_vma) -1
2571 || htab->splt == NULL)
2573 relocation -= htab->sgot->output_section->vma;
2577 relocation = (htab->splt->output_section->vma
2578 + htab->splt->output_offset
2580 - htab->sgot->output_section->vma);
2581 unresolved_reloc = FALSE;
2591 /* r_symndx will be zero only for relocs against symbols
2592 from removed linkonce sections, or sections discarded by
2595 || (input_section->flags & SEC_ALLOC) == 0)
2600 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2601 || h->root.type != bfd_link_hash_undefweak)
2602 && ((r_type != R_390_PC16
2603 && r_type != R_390_PC16DBL
2604 && r_type != R_390_PC32DBL
2605 && r_type != R_390_PC32)
2608 && (! info->symbolic
2609 || (h->elf_link_hash_flags
2610 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2611 || (ELIMINATE_COPY_RELOCS
2615 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2616 && (((h->elf_link_hash_flags
2617 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2618 && (h->elf_link_hash_flags
2619 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2620 || h->root.type == bfd_link_hash_undefweak
2621 || h->root.type == bfd_link_hash_undefined)))
2623 Elf_Internal_Rela outrel;
2624 bfd_boolean skip, relocate;
2628 /* When generating a shared object, these relocations
2629 are copied into the output file to be resolved at run
2636 _bfd_elf_section_offset (output_bfd, info, input_section,
2638 if (outrel.r_offset == (bfd_vma) -1)
2640 else if (outrel.r_offset == (bfd_vma) -2)
2641 skip = TRUE, relocate = TRUE;
2642 outrel.r_offset += (input_section->output_section->vma
2643 + input_section->output_offset);
2646 memset (&outrel, 0, sizeof outrel);
2649 && (r_type == R_390_PC16
2650 || r_type == R_390_PC16DBL
2651 || r_type == R_390_PC32DBL
2652 || r_type == R_390_PC32
2655 || (h->elf_link_hash_flags
2656 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2658 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2659 outrel.r_addend = rel->r_addend;
2663 /* This symbol is local, or marked to become local. */
2665 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2666 outrel.r_addend = relocation + rel->r_addend;
2669 sreloc = elf_section_data (input_section)->sreloc;
2673 loc = sreloc->contents;
2674 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2675 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2677 /* If this reloc is against an external symbol, we do
2678 not want to fiddle with the addend. Otherwise, we
2679 need to include the symbol value so that it becomes
2680 an addend for the dynamic reloc. */
2686 /* Relocations for tls literal pool entries. */
2687 case R_390_TLS_IE32:
2690 Elf_Internal_Rela outrel;
2694 outrel.r_offset = rel->r_offset
2695 + input_section->output_section->vma
2696 + input_section->output_offset;
2697 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2698 sreloc = elf_section_data (input_section)->sreloc;
2701 loc = sreloc->contents;
2702 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2703 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2707 case R_390_TLS_GD32:
2708 case R_390_TLS_GOTIE32:
2709 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2710 tls_type = GOT_UNKNOWN;
2711 if (h == NULL && local_got_offsets)
2712 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2715 tls_type = elf_s390_hash_entry(h)->tls_type;
2716 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2717 r_type = R_390_TLS_LE32;
2719 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2720 r_type = R_390_TLS_IE32;
2722 if (r_type == R_390_TLS_LE32)
2724 /* This relocation gets optimized away by the local exec
2725 access optimization. */
2726 BFD_ASSERT (! unresolved_reloc);
2727 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2728 contents + rel->r_offset);
2732 if (htab->sgot == NULL)
2736 off = h->got.offset;
2739 if (local_got_offsets == NULL)
2742 off = local_got_offsets[r_symndx];
2751 Elf_Internal_Rela outrel;
2755 if (htab->srelgot == NULL)
2758 outrel.r_offset = (htab->sgot->output_section->vma
2759 + htab->sgot->output_offset + off);
2761 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2762 if (r_type == R_390_TLS_GD32)
2763 dr_type = R_390_TLS_DTPMOD;
2765 dr_type = R_390_TLS_TPOFF;
2766 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2767 outrel.r_addend = relocation - dtpoff_base (info);
2769 outrel.r_addend = 0;
2770 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2771 loc = htab->srelgot->contents;
2772 loc += htab->srelgot->reloc_count++
2773 * sizeof (Elf32_External_Rela);
2774 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2776 if (r_type == R_390_TLS_GD32)
2780 BFD_ASSERT (! unresolved_reloc);
2781 bfd_put_32 (output_bfd,
2782 relocation - dtpoff_base (info),
2783 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2787 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2788 outrel.r_offset += GOT_ENTRY_SIZE;
2789 outrel.r_addend = 0;
2790 htab->srelgot->reloc_count++;
2791 loc += sizeof (Elf32_External_Rela);
2792 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2799 local_got_offsets[r_symndx] |= 1;
2802 if (off >= (bfd_vma) -2)
2804 if (r_type == ELF32_R_TYPE (rel->r_info))
2806 relocation = htab->sgot->output_offset + off;
2807 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2808 relocation += htab->sgot->output_section->vma;
2809 unresolved_reloc = FALSE;
2813 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2814 contents + rel->r_offset);
2819 case R_390_TLS_GOTIE12:
2820 case R_390_TLS_GOTIE20:
2821 case R_390_TLS_IEENT:
2824 if (local_got_offsets == NULL)
2826 off = local_got_offsets[r_symndx];
2828 goto emit_tls_relocs;
2832 off = h->got.offset;
2833 tls_type = elf_s390_hash_entry(h)->tls_type;
2834 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2835 goto emit_tls_relocs;
2838 if (htab->sgot == NULL)
2841 BFD_ASSERT (! unresolved_reloc);
2842 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2843 htab->sgot->contents + off);
2844 relocation = htab->sgot->output_offset + off;
2845 if (r_type == R_390_TLS_IEENT)
2846 relocation += htab->sgot->output_section->vma;
2847 unresolved_reloc = FALSE;
2850 case R_390_TLS_LDM32:
2852 /* The literal pool entry this relocation refers to gets ignored
2853 by the optimized code of the local exec model. Do nothing
2854 and the value will turn out zero. */
2857 if (htab->sgot == NULL)
2860 off = htab->tls_ldm_got.offset;
2865 Elf_Internal_Rela outrel;
2868 if (htab->srelgot == NULL)
2871 outrel.r_offset = (htab->sgot->output_section->vma
2872 + htab->sgot->output_offset + off);
2874 bfd_put_32 (output_bfd, 0,
2875 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2876 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2877 outrel.r_addend = 0;
2878 loc = htab->srelgot->contents;
2879 loc += htab->srelgot->reloc_count++
2880 * sizeof (Elf32_External_Rela);
2881 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2882 htab->tls_ldm_got.offset |= 1;
2884 relocation = htab->sgot->output_offset + off;
2885 unresolved_reloc = FALSE;
2888 case R_390_TLS_LE32:
2891 /* Linking a shared library with non-fpic code requires
2892 a R_390_TLS_TPOFF relocation. */
2893 Elf_Internal_Rela outrel;
2898 outrel.r_offset = rel->r_offset
2899 + input_section->output_section->vma
2900 + input_section->output_offset;
2901 if (h != NULL && h->dynindx != -1)
2905 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2907 outrel.r_addend = relocation - dtpoff_base (info);
2909 outrel.r_addend = 0;
2910 sreloc = elf_section_data (input_section)->sreloc;
2913 loc = sreloc->contents;
2914 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2915 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2919 BFD_ASSERT (! unresolved_reloc);
2920 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2921 contents + rel->r_offset);
2925 case R_390_TLS_LDO32:
2926 if (info->shared || (input_section->flags & SEC_CODE) == 0)
2927 relocation -= dtpoff_base (info);
2929 /* When converting LDO to LE, we must negate. */
2930 relocation = -tpoff (info, relocation);
2933 /* Relocations for tls instructions. */
2934 case R_390_TLS_LOAD:
2935 case R_390_TLS_GDCALL:
2936 case R_390_TLS_LDCALL:
2937 tls_type = GOT_UNKNOWN;
2938 if (h == NULL && local_got_offsets)
2939 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2941 tls_type = elf_s390_hash_entry(h)->tls_type;
2943 if (tls_type == GOT_TLS_GD)
2946 if (r_type == R_390_TLS_LOAD)
2948 if (!info->shared && (h == NULL || h->dynindx == -1))
2950 /* IE->LE transition. Four valid cases:
2951 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2952 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2953 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2954 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2955 unsigned int insn, ry;
2957 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2959 if ((insn & 0xff00f000) == 0x58000000)
2960 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2961 ry = (insn & 0x000f0000);
2962 else if ((insn & 0xff0f0000) == 0x58000000)
2963 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2964 ry = (insn & 0x0000f000) << 4;
2965 else if ((insn & 0xff00f000) == 0x5800c000)
2966 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2967 ry = (insn & 0x000f0000);
2968 else if ((insn & 0xff0f0000) == 0x580c0000)
2969 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2970 ry = (insn & 0x0000f000) << 4;
2972 invalid_tls_insn (input_bfd, input_section, rel);
2973 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2974 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2977 else if (r_type == R_390_TLS_GDCALL)
2981 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2982 if ((insn & 0xff000fff) != 0x4d000000)
2983 invalid_tls_insn (input_bfd, input_section, rel);
2984 if (!info->shared && (h == NULL || h->dynindx == -1))
2985 /* GD->LE transition.
2986 bas %r14,0(%rx,%r13) -> bc 0,0 */
2989 /* GD->IE transition.
2990 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2992 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2994 else if (r_type == R_390_TLS_LDCALL)
3000 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3001 if ((insn & 0xff000fff) != 0x4d000000)
3002 invalid_tls_insn (input_bfd, input_section, rel);
3003 /* LD->LE transition.
3004 bas %r14,0(%rx,%r13) -> bc 0,0 */
3006 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3015 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3016 because such sections are not SEC_ALLOC and thus ld.so will
3017 not process them. */
3018 if (unresolved_reloc
3019 && !((input_section->flags & SEC_DEBUGGING) != 0
3020 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3021 (*_bfd_error_handler)
3022 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3023 bfd_archive_filename (input_bfd),
3024 bfd_get_section_name (input_bfd, input_section),
3025 (long) rel->r_offset,
3026 h->root.root.string);
3028 if (r_type == R_390_20
3029 || r_type == R_390_GOT20
3030 || r_type == R_390_GOTPLT20
3031 || r_type == R_390_TLS_GOTIE20)
3033 relocation += rel->r_addend;
3034 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3035 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3036 contents, rel->r_offset,
3040 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3041 contents, rel->r_offset,
3042 relocation, rel->r_addend);
3044 if (r != bfd_reloc_ok)
3049 name = h->root.root.string;
3052 name = bfd_elf_string_from_elf_section (input_bfd,
3053 symtab_hdr->sh_link,
3058 name = bfd_section_name (input_bfd, sec);
3061 if (r == bfd_reloc_overflow)
3064 if (! ((*info->callbacks->reloc_overflow)
3065 (info, name, howto->name, (bfd_vma) 0,
3066 input_bfd, input_section, rel->r_offset)))
3071 (*_bfd_error_handler)
3072 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
3073 bfd_archive_filename (input_bfd),
3074 bfd_get_section_name (input_bfd, input_section),
3075 (long) rel->r_offset, name, (int) r);
3084 /* Finish up dynamic symbol handling. We set the contents of various
3085 dynamic sections here. */
3088 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3090 struct bfd_link_info *info;
3091 struct elf_link_hash_entry *h;
3092 Elf_Internal_Sym *sym;
3094 struct elf_s390_link_hash_table *htab;
3096 htab = elf_s390_hash_table (info);
3098 if (h->plt.offset != (bfd_vma) -1)
3102 Elf_Internal_Rela rela;
3104 bfd_vma relative_offset;
3106 /* This symbol has an entry in the procedure linkage table. Set
3108 if (h->dynindx == -1
3109 || htab->splt == NULL
3110 || htab->sgotplt == NULL
3111 || htab->srelplt == NULL)
3115 Current offset - size first entry / entry size. */
3116 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3118 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3120 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3122 /* S390 uses halfwords for relative branch calc! */
3123 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3124 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3125 /* If offset is > 32768, branch to a previous branch
3126 390 can only handle +-64 K jumps. */
3127 if ( -32768 > (int) relative_offset )
3129 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3131 /* Fill in the entry in the procedure linkage table. */
3134 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3135 htab->splt->contents + h->plt.offset);
3136 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3137 htab->splt->contents + h->plt.offset + 4);
3138 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3139 htab->splt->contents + h->plt.offset + 8);
3140 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3141 htab->splt->contents + h->plt.offset + 12);
3142 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3143 htab->splt->contents + h->plt.offset + 16);
3144 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3145 htab->splt->contents + h->plt.offset + 20);
3146 bfd_put_32 (output_bfd,
3147 (htab->sgotplt->output_section->vma
3148 + htab->sgotplt->output_offset
3150 htab->splt->contents + h->plt.offset + 24);
3152 else if (got_offset < 4096)
3154 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3155 htab->splt->contents + h->plt.offset);
3156 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3157 htab->splt->contents + h->plt.offset + 4);
3158 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3159 htab->splt->contents + h->plt.offset + 8);
3160 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3161 htab->splt->contents + h->plt.offset + 12);
3162 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3163 htab->splt->contents + h->plt.offset + 16);
3164 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3165 htab->splt->contents + h->plt.offset + 20);
3166 bfd_put_32 (output_bfd, (bfd_vma) 0,
3167 htab->splt->contents + h->plt.offset + 24);
3169 else if (got_offset < 32768)
3171 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3172 htab->splt->contents + h->plt.offset);
3173 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3174 htab->splt->contents + h->plt.offset + 4);
3175 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3176 htab->splt->contents + h->plt.offset + 8);
3177 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3178 htab->splt->contents + h->plt.offset + 12);
3179 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3180 htab->splt->contents + h->plt.offset + 16);
3181 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3182 htab->splt->contents + h->plt.offset + 20);
3183 bfd_put_32 (output_bfd, (bfd_vma) 0,
3184 htab->splt->contents + h->plt.offset + 24);
3188 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3189 htab->splt->contents + h->plt.offset);
3190 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3191 htab->splt->contents + h->plt.offset + 4);
3192 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3193 htab->splt->contents + h->plt.offset + 8);
3194 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3195 htab->splt->contents + h->plt.offset + 12);
3196 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3197 htab->splt->contents + h->plt.offset + 16);
3198 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3199 htab->splt->contents + h->plt.offset + 20);
3200 bfd_put_32 (output_bfd, got_offset,
3201 htab->splt->contents + h->plt.offset + 24);
3203 /* Insert offset into reloc. table here. */
3204 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3205 htab->splt->contents + h->plt.offset + 28);
3207 /* Fill in the entry in the global offset table.
3208 Points to instruction after GOT offset. */
3209 bfd_put_32 (output_bfd,
3210 (htab->splt->output_section->vma
3211 + htab->splt->output_offset
3214 htab->sgotplt->contents + got_offset);
3216 /* Fill in the entry in the .rela.plt section. */
3217 rela.r_offset = (htab->sgotplt->output_section->vma
3218 + htab->sgotplt->output_offset
3220 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3222 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3223 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3225 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3227 /* Mark the symbol as undefined, rather than as defined in
3228 the .plt section. Leave the value alone. This is a clue
3229 for the dynamic linker, to make function pointer
3230 comparisons work between an application and shared
3232 sym->st_shndx = SHN_UNDEF;
3236 if (h->got.offset != (bfd_vma) -1
3237 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3238 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3239 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3241 Elf_Internal_Rela rela;
3244 /* This symbol has an entry in the global offset table. Set it
3247 if (htab->sgot == NULL || htab->srelgot == NULL)
3250 rela.r_offset = (htab->sgot->output_section->vma
3251 + htab->sgot->output_offset
3252 + (h->got.offset &~ (bfd_vma) 1));
3254 /* If this is a static link, or it is a -Bsymbolic link and the
3255 symbol is defined locally or was forced to be local because
3256 of a version file, we just want to emit a RELATIVE reloc.
3257 The entry in the global offset table will already have been
3258 initialized in the relocate_section function. */
3262 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
3263 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3265 BFD_ASSERT((h->got.offset & 1) != 0);
3266 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3267 rela.r_addend = (h->root.u.def.value
3268 + h->root.u.def.section->output_section->vma
3269 + h->root.u.def.section->output_offset);
3273 BFD_ASSERT((h->got.offset & 1) == 0);
3274 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3275 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3279 loc = htab->srelgot->contents;
3280 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3281 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3284 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3286 Elf_Internal_Rela rela;
3289 /* This symbols needs a copy reloc. Set it up. */
3291 if (h->dynindx == -1
3292 || (h->root.type != bfd_link_hash_defined
3293 && h->root.type != bfd_link_hash_defweak)
3294 || htab->srelbss == NULL)
3297 rela.r_offset = (h->root.u.def.value
3298 + h->root.u.def.section->output_section->vma
3299 + h->root.u.def.section->output_offset);
3300 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3302 loc = htab->srelbss->contents;
3303 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3304 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3307 /* Mark some specially defined symbols as absolute. */
3308 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3309 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3310 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3311 sym->st_shndx = SHN_ABS;
3316 /* Used to decide how to sort relocs in an optimal manner for the
3317 dynamic linker, before writing them out. */
3319 static enum elf_reloc_type_class
3320 elf_s390_reloc_type_class (rela)
3321 const Elf_Internal_Rela *rela;
3323 switch ((int) ELF32_R_TYPE (rela->r_info))
3325 case R_390_RELATIVE:
3326 return reloc_class_relative;
3327 case R_390_JMP_SLOT:
3328 return reloc_class_plt;
3330 return reloc_class_copy;
3332 return reloc_class_normal;
3336 /* Finish up the dynamic sections. */
3339 elf_s390_finish_dynamic_sections (output_bfd, info)
3341 struct bfd_link_info *info;
3343 struct elf_s390_link_hash_table *htab;
3347 htab = elf_s390_hash_table (info);
3348 dynobj = htab->elf.dynobj;
3349 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3351 if (htab->elf.dynamic_sections_created)
3353 Elf32_External_Dyn *dyncon, *dynconend;
3355 if (sdyn == NULL || htab->sgot == NULL)
3358 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3359 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3360 for (; dyncon < dynconend; dyncon++)
3362 Elf_Internal_Dyn dyn;
3365 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3373 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3377 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3381 s = htab->srelplt->output_section;
3382 if (s->_cooked_size != 0)
3383 dyn.d_un.d_val = s->_cooked_size;
3385 dyn.d_un.d_val = s->_raw_size;
3389 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3392 /* Fill in the special first entry in the procedure linkage table. */
3393 if (htab->splt && htab->splt->_raw_size > 0)
3395 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3398 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3399 htab->splt->contents );
3400 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3401 htab->splt->contents +4 );
3402 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3403 htab->splt->contents +8 );
3404 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3405 htab->splt->contents +12 );
3406 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3407 htab->splt->contents +16 );
3411 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3412 htab->splt->contents );
3413 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3414 htab->splt->contents +4 );
3415 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3416 htab->splt->contents +8 );
3417 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3418 htab->splt->contents +12 );
3419 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3420 htab->splt->contents +16 );
3421 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3422 htab->splt->contents +20 );
3423 bfd_put_32 (output_bfd,
3424 htab->sgotplt->output_section->vma
3425 + htab->sgotplt->output_offset,
3426 htab->splt->contents + 24);
3428 elf_section_data (htab->splt->output_section)
3429 ->this_hdr.sh_entsize = 4;
3436 /* Fill in the first three entries in the global offset table. */
3437 if (htab->sgotplt->_raw_size > 0)
3439 bfd_put_32 (output_bfd,
3440 (sdyn == NULL ? (bfd_vma) 0
3441 : sdyn->output_section->vma + sdyn->output_offset),
3442 htab->sgotplt->contents);
3443 /* One entry for shared object struct ptr. */
3444 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3445 /* One entry for _dl_runtime_resolve. */
3446 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3449 elf_section_data (htab->sgotplt->output_section)
3450 ->this_hdr.sh_entsize = 4;
3456 elf_s390_grok_prstatus (abfd, note)
3458 Elf_Internal_Note * note;
3461 unsigned int raw_size;
3463 switch (note->descsz)
3468 case 224: /* S/390 Linux. */
3470 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3473 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3481 /* Make a ".reg/999" section. */
3482 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3483 raw_size, note->descpos + offset);
3486 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3487 #define TARGET_BIG_NAME "elf32-s390"
3488 #define ELF_ARCH bfd_arch_s390
3489 #define ELF_MACHINE_CODE EM_S390
3490 #define ELF_MACHINE_ALT1 EM_S390_OLD
3491 #define ELF_MAXPAGESIZE 0x1000
3493 #define elf_backend_can_gc_sections 1
3494 #define elf_backend_can_refcount 1
3495 #define elf_backend_want_got_plt 1
3496 #define elf_backend_plt_readonly 1
3497 #define elf_backend_want_plt_sym 0
3498 #define elf_backend_got_header_size 12
3499 #define elf_backend_plt_header_size PLT_ENTRY_SIZE
3500 #define elf_backend_rela_normal 1
3502 #define elf_info_to_howto elf_s390_info_to_howto
3504 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3505 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3506 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3508 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3509 #define elf_backend_check_relocs elf_s390_check_relocs
3510 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3511 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3512 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3513 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3514 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3515 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3516 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3517 #define elf_backend_relocate_section elf_s390_relocate_section
3518 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3519 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3520 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3522 #define bfd_elf32_mkobject elf_s390_mkobject
3523 #define elf_backend_object_p elf_s390_object_p
3525 #include "elf32-target.h"