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2008-01-11 Tristan Gingold <gingold@adacore.com>
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28
29 static reloc_howto_type *elf_s390_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf_s390_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf_s390_is_local_label_name
34 PARAMS ((bfd *, const char *));
35 static struct bfd_hash_entry *link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
37 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
38 PARAMS ((bfd *));
39 static bfd_boolean create_got_section
40 PARAMS((bfd *, struct bfd_link_info *));
41 static bfd_boolean elf_s390_create_dynamic_sections
42 PARAMS((bfd *, struct bfd_link_info *));
43 static void elf_s390_copy_indirect_symbol
44 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
45 struct elf_link_hash_entry *));
46 static bfd_boolean elf_s390_check_relocs
47 PARAMS ((bfd *, struct bfd_link_info *, asection *,
48 const Elf_Internal_Rela *));
49 struct elf_s390_link_hash_entry;
50 static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry *));
52 static bfd_boolean elf_s390_adjust_dynamic_symbol
53 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
54 static bfd_boolean allocate_dynrelocs
55 PARAMS ((struct elf_link_hash_entry *, PTR));
56 static bfd_boolean readonly_dynrelocs
57 PARAMS ((struct elf_link_hash_entry *, PTR));
58 static bfd_boolean elf_s390_size_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf_s390_relocate_section
61 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
62 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
63 static bfd_boolean elf_s390_finish_dynamic_symbol
64 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
65 Elf_Internal_Sym *));
66 static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela *));
68 static bfd_boolean elf_s390_finish_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static bfd_boolean elf_s390_object_p
71 PARAMS ((bfd *));
72 static bfd_boolean elf_s390_grok_prstatus
73 PARAMS ((bfd *, Elf_Internal_Note *));
74 static int elf_s390_tls_transition
75 PARAMS ((struct bfd_link_info *, int, int));
76 static bfd_reloc_status_type s390_tls_reloc
77 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
78 static bfd_vma dtpoff_base
79 PARAMS ((struct bfd_link_info *));
80 static bfd_vma tpoff
81 PARAMS ((struct bfd_link_info *, bfd_vma));
82 static void invalid_tls_insn
83 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
84 static bfd_reloc_status_type s390_elf_ldisp_reloc
85 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
86
87 #include "elf/s390.h"
88
89 /* The relocation "howto" table. */
90
91 static reloc_howto_type elf_howto_table[] =
92 {
93 HOWTO (R_390_NONE, /* type */
94 0, /* rightshift */
95 0, /* size (0 = byte, 1 = short, 2 = long) */
96 0, /* bitsize */
97 FALSE, /* pc_relative */
98 0, /* bitpos */
99 complain_overflow_dont, /* complain_on_overflow */
100 bfd_elf_generic_reloc, /* special_function */
101 "R_390_NONE", /* name */
102 FALSE, /* partial_inplace */
103 0, /* src_mask */
104 0, /* dst_mask */
105 FALSE), /* pcrel_offset */
106
107 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
109 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
110 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
111 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
113 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
115 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
117 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
119 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
123 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
125 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
129 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
131 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
133 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
135 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
136 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
137 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
139 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
141 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
143 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
145 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
147 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
149 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
150 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
151 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
152 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
153 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
155 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
157 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
158 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
159 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
160 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
162 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
164 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
165 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
167 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
171 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
172 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
173 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
174 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
175 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
176 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
177 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
178 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
180 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
181 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
182 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
183 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
184 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
185 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
186 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
187 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
188 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
189 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
190 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
191 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
192 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
193 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
194 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
196 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
197 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
198 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
199 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
200 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
201 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
202 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
203 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
204 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
206 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
207 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
208 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
209 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
210 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
211 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
212 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
213 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
214 };
215
216 /* GNU extension to record C++ vtable hierarchy. */
217 static reloc_howto_type elf32_s390_vtinherit_howto =
218 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
219 static reloc_howto_type elf32_s390_vtentry_howto =
220 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);
221
222 static reloc_howto_type *
223 elf_s390_reloc_type_lookup (abfd, code)
224 bfd *abfd ATTRIBUTE_UNUSED;
225 bfd_reloc_code_real_type code;
226 {
227 switch (code)
228 {
229 case BFD_RELOC_NONE:
230 return &elf_howto_table[(int) R_390_NONE];
231 case BFD_RELOC_8:
232 return &elf_howto_table[(int) R_390_8];
233 case BFD_RELOC_390_12:
234 return &elf_howto_table[(int) R_390_12];
235 case BFD_RELOC_16:
236 return &elf_howto_table[(int) R_390_16];
237 case BFD_RELOC_32:
238 return &elf_howto_table[(int) R_390_32];
239 case BFD_RELOC_CTOR:
240 return &elf_howto_table[(int) R_390_32];
241 case BFD_RELOC_32_PCREL:
242 return &elf_howto_table[(int) R_390_PC32];
243 case BFD_RELOC_390_GOT12:
244 return &elf_howto_table[(int) R_390_GOT12];
245 case BFD_RELOC_32_GOT_PCREL:
246 return &elf_howto_table[(int) R_390_GOT32];
247 case BFD_RELOC_390_PLT32:
248 return &elf_howto_table[(int) R_390_PLT32];
249 case BFD_RELOC_390_COPY:
250 return &elf_howto_table[(int) R_390_COPY];
251 case BFD_RELOC_390_GLOB_DAT:
252 return &elf_howto_table[(int) R_390_GLOB_DAT];
253 case BFD_RELOC_390_JMP_SLOT:
254 return &elf_howto_table[(int) R_390_JMP_SLOT];
255 case BFD_RELOC_390_RELATIVE:
256 return &elf_howto_table[(int) R_390_RELATIVE];
257 case BFD_RELOC_32_GOTOFF:
258 return &elf_howto_table[(int) R_390_GOTOFF32];
259 case BFD_RELOC_390_GOTPC:
260 return &elf_howto_table[(int) R_390_GOTPC];
261 case BFD_RELOC_390_GOT16:
262 return &elf_howto_table[(int) R_390_GOT16];
263 case BFD_RELOC_16_PCREL:
264 return &elf_howto_table[(int) R_390_PC16];
265 case BFD_RELOC_390_PC16DBL:
266 return &elf_howto_table[(int) R_390_PC16DBL];
267 case BFD_RELOC_390_PLT16DBL:
268 return &elf_howto_table[(int) R_390_PLT16DBL];
269 case BFD_RELOC_390_PC32DBL:
270 return &elf_howto_table[(int) R_390_PC32DBL];
271 case BFD_RELOC_390_PLT32DBL:
272 return &elf_howto_table[(int) R_390_PLT32DBL];
273 case BFD_RELOC_390_GOTPCDBL:
274 return &elf_howto_table[(int) R_390_GOTPCDBL];
275 case BFD_RELOC_390_GOTENT:
276 return &elf_howto_table[(int) R_390_GOTENT];
277 case BFD_RELOC_16_GOTOFF:
278 return &elf_howto_table[(int) R_390_GOTOFF16];
279 case BFD_RELOC_390_GOTPLT12:
280 return &elf_howto_table[(int) R_390_GOTPLT12];
281 case BFD_RELOC_390_GOTPLT16:
282 return &elf_howto_table[(int) R_390_GOTPLT16];
283 case BFD_RELOC_390_GOTPLT32:
284 return &elf_howto_table[(int) R_390_GOTPLT32];
285 case BFD_RELOC_390_GOTPLTENT:
286 return &elf_howto_table[(int) R_390_GOTPLTENT];
287 case BFD_RELOC_390_PLTOFF16:
288 return &elf_howto_table[(int) R_390_PLTOFF16];
289 case BFD_RELOC_390_PLTOFF32:
290 return &elf_howto_table[(int) R_390_PLTOFF32];
291 case BFD_RELOC_390_TLS_LOAD:
292 return &elf_howto_table[(int) R_390_TLS_LOAD];
293 case BFD_RELOC_390_TLS_GDCALL:
294 return &elf_howto_table[(int) R_390_TLS_GDCALL];
295 case BFD_RELOC_390_TLS_LDCALL:
296 return &elf_howto_table[(int) R_390_TLS_LDCALL];
297 case BFD_RELOC_390_TLS_GD32:
298 return &elf_howto_table[(int) R_390_TLS_GD32];
299 case BFD_RELOC_390_TLS_GOTIE12:
300 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
301 case BFD_RELOC_390_TLS_GOTIE32:
302 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
303 case BFD_RELOC_390_TLS_LDM32:
304 return &elf_howto_table[(int) R_390_TLS_LDM32];
305 case BFD_RELOC_390_TLS_IE32:
306 return &elf_howto_table[(int) R_390_TLS_IE32];
307 case BFD_RELOC_390_TLS_IEENT:
308 return &elf_howto_table[(int) R_390_TLS_IEENT];
309 case BFD_RELOC_390_TLS_LE32:
310 return &elf_howto_table[(int) R_390_TLS_LE32];
311 case BFD_RELOC_390_TLS_LDO32:
312 return &elf_howto_table[(int) R_390_TLS_LDO32];
313 case BFD_RELOC_390_TLS_DTPMOD:
314 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
315 case BFD_RELOC_390_TLS_DTPOFF:
316 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
317 case BFD_RELOC_390_TLS_TPOFF:
318 return &elf_howto_table[(int) R_390_TLS_TPOFF];
319 case BFD_RELOC_390_20:
320 return &elf_howto_table[(int) R_390_20];
321 case BFD_RELOC_390_GOT20:
322 return &elf_howto_table[(int) R_390_GOT20];
323 case BFD_RELOC_390_GOTPLT20:
324 return &elf_howto_table[(int) R_390_GOTPLT20];
325 case BFD_RELOC_390_TLS_GOTIE20:
326 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
327 case BFD_RELOC_VTABLE_INHERIT:
328 return &elf32_s390_vtinherit_howto;
329 case BFD_RELOC_VTABLE_ENTRY:
330 return &elf32_s390_vtentry_howto;
331 default:
332 break;
333 }
334 return 0;
335 }
336
337 static reloc_howto_type *
338 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
339 const char *r_name)
340 {
341 unsigned int i;
342
343 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
344 if (elf_howto_table[i].name != NULL
345 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
346 return &elf_howto_table[i];
347
348 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
349 return &elf32_s390_vtinherit_howto;
350 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
351 return &elf32_s390_vtentry_howto;
352
353 return NULL;
354 }
355
356 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
357 and elf32-s390.c has its own copy. */
358
359 static void
360 elf_s390_info_to_howto (abfd, cache_ptr, dst)
361 bfd *abfd ATTRIBUTE_UNUSED;
362 arelent *cache_ptr;
363 Elf_Internal_Rela *dst;
364 {
365 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
366 switch (r_type)
367 {
368 case R_390_GNU_VTINHERIT:
369 cache_ptr->howto = &elf32_s390_vtinherit_howto;
370 break;
371
372 case R_390_GNU_VTENTRY:
373 cache_ptr->howto = &elf32_s390_vtentry_howto;
374 break;
375
376 default:
377 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
378 {
379 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
380 abfd, (int) r_type);
381 r_type = R_390_NONE;
382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
384 }
385 }
386
387 /* A relocation function which doesn't do anything. */
388 static bfd_reloc_status_type
389 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
390 output_bfd, error_message)
391 bfd *abfd ATTRIBUTE_UNUSED;
392 arelent *reloc_entry;
393 asymbol *symbol ATTRIBUTE_UNUSED;
394 PTR data ATTRIBUTE_UNUSED;
395 asection *input_section;
396 bfd *output_bfd;
397 char **error_message ATTRIBUTE_UNUSED;
398 {
399 if (output_bfd)
400 reloc_entry->address += input_section->output_offset;
401 return bfd_reloc_ok;
402 }
403
404 /* Handle the large displacement relocs. */
405 static bfd_reloc_status_type
406 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
407 output_bfd, error_message)
408 bfd *abfd ATTRIBUTE_UNUSED;
409 arelent *reloc_entry;
410 asymbol *symbol;
411 PTR data ATTRIBUTE_UNUSED;
412 asection *input_section;
413 bfd *output_bfd;
414 char **error_message ATTRIBUTE_UNUSED;
415 {
416 reloc_howto_type *howto = reloc_entry->howto;
417 bfd_vma relocation;
418 bfd_vma insn;
419
420 if (output_bfd != (bfd *) NULL
421 && (symbol->flags & BSF_SECTION_SYM) == 0
422 && (! howto->partial_inplace
423 || reloc_entry->addend == 0))
424 {
425 reloc_entry->address += input_section->output_offset;
426 return bfd_reloc_ok;
427 }
428
429 if (output_bfd != NULL)
430 return bfd_reloc_continue;
431
432 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
433 return bfd_reloc_outofrange;
434
435 relocation = (symbol->value
436 + symbol->section->output_section->vma
437 + symbol->section->output_offset);
438 relocation += reloc_entry->addend;
439 if (howto->pc_relative)
440 {
441 relocation -= (input_section->output_section->vma
442 + input_section->output_offset);
443 relocation -= reloc_entry->address;
444 }
445
446 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
447 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
448 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
449
450 if ((bfd_signed_vma) relocation < - 0x80000
451 || (bfd_signed_vma) relocation > 0x7ffff)
452 return bfd_reloc_overflow;
453 else
454 return bfd_reloc_ok;
455 }
456
457 static bfd_boolean
458 elf_s390_is_local_label_name (abfd, name)
459 bfd *abfd;
460 const char *name;
461 {
462 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
463 return TRUE;
464
465 return _bfd_elf_is_local_label_name (abfd, name);
466 }
467
468 /* Functions for the 390 ELF linker. */
469
470 /* The name of the dynamic interpreter. This is put in the .interp
471 section. */
472
473 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
474
475 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
476 copying dynamic variables from a shared lib into an app's dynbss
477 section, and instead use a dynamic relocation to point into the
478 shared lib. */
479 #define ELIMINATE_COPY_RELOCS 1
480
481 /* The size in bytes of the first entry in the procedure linkage table. */
482 #define PLT_FIRST_ENTRY_SIZE 32
483 /* The size in bytes of an entry in the procedure linkage table. */
484 #define PLT_ENTRY_SIZE 32
485
486 #define GOT_ENTRY_SIZE 4
487
488 /* The first three entries in a procedure linkage table are reserved,
489 and the initial contents are unimportant (we zero them out).
490 Subsequent entries look like this. See the SVR4 ABI 386
491 supplement to see how this works. */
492
493 /* For the s390, simple addr offset can only be 0 - 4096.
494 To use the full 2 GB address space, several instructions
495 are needed to load an address in a register and execute
496 a branch( or just saving the address)
497
498 Furthermore, only r 0 and 1 are free to use!!! */
499
500 /* The first 3 words in the GOT are then reserved.
501 Word 0 is the address of the dynamic table.
502 Word 1 is a pointer to a structure describing the object
503 Word 2 is used to point to the loader entry address.
504
505 The code for position independent PLT entries looks like this:
506
507 r12 holds addr of the current GOT at entry to the PLT
508
509 The GOT holds the address in the PLT to be executed.
510 The loader then gets:
511 24(15) = Pointer to the structure describing the object.
512 28(15) = Offset in symbol table
513
514 The loader must then find the module where the function is
515 and insert the address in the GOT.
516
517 Note: 390 can only address +- 64 K relative.
518 We check if offset > 65536, then make a relative branch -64xxx
519 back to a previous defined branch
520
521 PLT1: BASR 1,0 # 2 bytes
522 L 1,22(1) # 4 bytes Load offset in GOT in r 1
523 L 1,(1,12) # 4 bytes Load address from GOT in r1
524 BCR 15,1 # 2 bytes Jump to address
525 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
526 L 1,14(1) # 4 bytes Load offset in symol table in r1
527 BRC 15,-x # 4 bytes Jump to start of PLT
528 .word 0 # 2 bytes filler
529 .long ? # 4 bytes offset in GOT
530 .long ? # 4 bytes offset into symbol table
531
532 This was the general case. There are two additional, optimizes PLT
533 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
534 First the one for GOT offsets < 4096:
535
536 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
537 BCR 15,1 # 2 bytes Jump to address
538 .word 0,0,0 # 6 bytes filler
539 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
540 L 1,14(1) # 4 bytes Load offset in symbol table in r1
541 BRC 15,-x # 4 bytes Jump to start of PLT
542 .word 0,0,0 # 6 bytes filler
543 .long ? # 4 bytes offset into symbol table
544
545 Second the one for GOT offsets < 32768:
546
547 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
548 L 1,(1,12) # 4 bytes Load address from GOT to r1
549 BCR 15,1 # 2 bytes Jump to address
550 .word 0 # 2 bytes filler
551 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
552 L 1,14(1) # 4 bytes Load offset in symbol table in r1
553 BRC 15,-x # 4 bytes Jump to start of PLT
554 .word 0,0,0 # 6 bytes filler
555 .long ? # 4 bytes offset into symbol table
556
557 Total = 32 bytes per PLT entry
558
559 The code for static build PLT entries looks like this:
560
561 PLT1: BASR 1,0 # 2 bytes
562 L 1,22(1) # 4 bytes Load address of GOT entry
563 L 1,0(0,1) # 4 bytes Load address from GOT in r1
564 BCR 15,1 # 2 bytes Jump to address
565 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
566 L 1,14(1) # 4 bytes Load offset in symbol table in r1
567 BRC 15,-x # 4 bytes Jump to start of PLT
568 .word 0 # 2 bytes filler
569 .long ? # 4 bytes address of GOT entry
570 .long ? # 4 bytes offset into symbol table */
571
572 #define PLT_PIC_ENTRY_WORD0 0x0d105810
573 #define PLT_PIC_ENTRY_WORD1 0x10165811
574 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
575 #define PLT_PIC_ENTRY_WORD3 0x0d105810
576 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
577
578 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
579 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
580 #define PLT_PIC12_ENTRY_WORD2 0x00000000
581 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
582 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
583
584 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
585 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
586 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
587 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
588 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
589
590 #define PLT_ENTRY_WORD0 0x0d105810
591 #define PLT_ENTRY_WORD1 0x10165810
592 #define PLT_ENTRY_WORD2 0x100007f1
593 #define PLT_ENTRY_WORD3 0x0d105810
594 #define PLT_ENTRY_WORD4 0x100ea7f4
595
596 /* The first PLT entry pushes the offset into the symbol table
597 from R1 onto the stack at 8(15) and the loader object info
598 at 12(15), loads the loader address in R1 and jumps to it. */
599
600 /* The first entry in the PLT for PIC code:
601
602 PLT0:
603 ST 1,28(15) # R1 has offset into symbol table
604 L 1,4(12) # Get loader ino(object struct address)
605 ST 1,24(15) # Store address
606 L 1,8(12) # Entry address of loader in R1
607 BR 1 # Jump to loader
608
609 The first entry in the PLT for static code:
610
611 PLT0:
612 ST 1,28(15) # R1 has offset into symbol table
613 BASR 1,0
614 L 1,18(0,1) # Get address of GOT
615 MVC 24(4,15),4(1) # Move loader ino to stack
616 L 1,8(1) # Get address of loader
617 BR 1 # Jump to loader
618 .word 0 # filler
619 .long got # address of GOT */
620
621 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
622 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
623 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
624 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
625 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
626
627 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
628 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
629 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
630 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
631 #define PLT_FIRST_ENTRY_WORD4 0x58101008
632 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
633
634 /* The s390 linker needs to keep track of the number of relocs that it
635 decides to copy as dynamic relocs in check_relocs for each symbol.
636 This is so that it can later discard them if they are found to be
637 unnecessary. We store the information in a field extending the
638 regular ELF linker hash table. */
639
640 struct elf_s390_dyn_relocs
641 {
642 struct elf_s390_dyn_relocs *next;
643
644 /* The input section of the reloc. */
645 asection *sec;
646
647 /* Total number of relocs copied for the input section. */
648 bfd_size_type count;
649
650 /* Number of pc-relative relocs copied for the input section. */
651 bfd_size_type pc_count;
652 };
653
654 /* s390 ELF linker hash entry. */
655
656 struct elf_s390_link_hash_entry
657 {
658 struct elf_link_hash_entry elf;
659
660 /* Track dynamic relocs copied for this symbol. */
661 struct elf_s390_dyn_relocs *dyn_relocs;
662
663 /* Number of GOTPLT references for a function. */
664 bfd_signed_vma gotplt_refcount;
665
666 #define GOT_UNKNOWN 0
667 #define GOT_NORMAL 1
668 #define GOT_TLS_GD 2
669 #define GOT_TLS_IE 3
670 #define GOT_TLS_IE_NLT 4
671 unsigned char tls_type;
672 };
673
674 #define elf_s390_hash_entry(ent) \
675 ((struct elf_s390_link_hash_entry *)(ent))
676
677 struct elf_s390_obj_tdata
678 {
679 struct elf_obj_tdata root;
680
681 /* tls_type for each local got entry. */
682 char *local_got_tls_type;
683 };
684
685 #define elf_s390_tdata(abfd) \
686 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
687
688 #define elf_s390_local_got_tls_type(abfd) \
689 (elf_s390_tdata (abfd)->local_got_tls_type)
690
691 static bfd_boolean
692 elf_s390_mkobject (bfd *abfd)
693 {
694 if (abfd->tdata.any == NULL)
695 {
696 bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
697 abfd->tdata.any = bfd_zalloc (abfd, amt);
698 if (abfd->tdata.any == NULL)
699 return FALSE;
700 }
701 return bfd_elf_mkobject (abfd);
702 }
703
704 static bfd_boolean
705 elf_s390_object_p (abfd)
706 bfd *abfd;
707 {
708 /* Set the right machine number for an s390 elf32 file. */
709 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
710 }
711
712 /* s390 ELF linker hash table. */
713
714 struct elf_s390_link_hash_table
715 {
716 struct elf_link_hash_table elf;
717
718 /* Short-cuts to get to dynamic linker sections. */
719 asection *sgot;
720 asection *sgotplt;
721 asection *srelgot;
722 asection *splt;
723 asection *srelplt;
724 asection *sdynbss;
725 asection *srelbss;
726
727 union {
728 bfd_signed_vma refcount;
729 bfd_vma offset;
730 } tls_ldm_got;
731
732 /* Small local sym to section mapping cache. */
733 struct sym_sec_cache sym_sec;
734 };
735
736 /* Get the s390 ELF linker hash table from a link_info structure. */
737
738 #define elf_s390_hash_table(p) \
739 ((struct elf_s390_link_hash_table *) ((p)->hash))
740
741 /* Create an entry in an s390 ELF linker hash table. */
742
743 static struct bfd_hash_entry *
744 link_hash_newfunc (entry, table, string)
745 struct bfd_hash_entry *entry;
746 struct bfd_hash_table *table;
747 const char *string;
748 {
749 /* Allocate the structure if it has not already been allocated by a
750 subclass. */
751 if (entry == NULL)
752 {
753 entry = bfd_hash_allocate (table,
754 sizeof (struct elf_s390_link_hash_entry));
755 if (entry == NULL)
756 return entry;
757 }
758
759 /* Call the allocation method of the superclass. */
760 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
761 if (entry != NULL)
762 {
763 struct elf_s390_link_hash_entry *eh;
764
765 eh = (struct elf_s390_link_hash_entry *) entry;
766 eh->dyn_relocs = NULL;
767 eh->gotplt_refcount = 0;
768 eh->tls_type = GOT_UNKNOWN;
769 }
770
771 return entry;
772 }
773
774 /* Create an s390 ELF linker hash table. */
775
776 static struct bfd_link_hash_table *
777 elf_s390_link_hash_table_create (abfd)
778 bfd *abfd;
779 {
780 struct elf_s390_link_hash_table *ret;
781 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
782
783 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
784 if (ret == NULL)
785 return NULL;
786
787 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
788 sizeof (struct elf_s390_link_hash_entry)))
789 {
790 free (ret);
791 return NULL;
792 }
793
794 ret->sgot = NULL;
795 ret->sgotplt = NULL;
796 ret->srelgot = NULL;
797 ret->splt = NULL;
798 ret->srelplt = NULL;
799 ret->sdynbss = NULL;
800 ret->srelbss = NULL;
801 ret->tls_ldm_got.refcount = 0;
802 ret->sym_sec.abfd = NULL;
803
804 return &ret->elf.root;
805 }
806
807 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
808 shortcuts to them in our hash table. */
809
810 static bfd_boolean
811 create_got_section (dynobj, info)
812 bfd *dynobj;
813 struct bfd_link_info *info;
814 {
815 struct elf_s390_link_hash_table *htab;
816
817 if (! _bfd_elf_create_got_section (dynobj, info))
818 return FALSE;
819
820 htab = elf_s390_hash_table (info);
821 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
822 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
823 if (!htab->sgot || !htab->sgotplt)
824 abort ();
825
826 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
827 (SEC_ALLOC | SEC_LOAD
828 | SEC_HAS_CONTENTS
829 | SEC_IN_MEMORY
830 | SEC_LINKER_CREATED
831 | SEC_READONLY));
832 if (htab->srelgot == NULL
833 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
834 return FALSE;
835 return TRUE;
836 }
837
838 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
839 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
840 hash table. */
841
842 static bfd_boolean
843 elf_s390_create_dynamic_sections (dynobj, info)
844 bfd *dynobj;
845 struct bfd_link_info *info;
846 {
847 struct elf_s390_link_hash_table *htab;
848
849 htab = elf_s390_hash_table (info);
850 if (!htab->sgot && !create_got_section (dynobj, info))
851 return FALSE;
852
853 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
854 return FALSE;
855
856 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
857 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
858 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
859 if (!info->shared)
860 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
861
862 if (!htab->splt || !htab->srelplt || !htab->sdynbss
863 || (!info->shared && !htab->srelbss))
864 abort ();
865
866 return TRUE;
867 }
868
869 /* Copy the extra info we tack onto an elf_link_hash_entry. */
870
871 static void
872 elf_s390_copy_indirect_symbol (info, dir, ind)
873 struct bfd_link_info *info;
874 struct elf_link_hash_entry *dir, *ind;
875 {
876 struct elf_s390_link_hash_entry *edir, *eind;
877
878 edir = (struct elf_s390_link_hash_entry *) dir;
879 eind = (struct elf_s390_link_hash_entry *) ind;
880
881 if (eind->dyn_relocs != NULL)
882 {
883 if (edir->dyn_relocs != NULL)
884 {
885 struct elf_s390_dyn_relocs **pp;
886 struct elf_s390_dyn_relocs *p;
887
888 /* Add reloc counts against the indirect sym to the direct sym
889 list. Merge any entries against the same section. */
890 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
891 {
892 struct elf_s390_dyn_relocs *q;
893
894 for (q = edir->dyn_relocs; q != NULL; q = q->next)
895 if (q->sec == p->sec)
896 {
897 q->pc_count += p->pc_count;
898 q->count += p->count;
899 *pp = p->next;
900 break;
901 }
902 if (q == NULL)
903 pp = &p->next;
904 }
905 *pp = edir->dyn_relocs;
906 }
907
908 edir->dyn_relocs = eind->dyn_relocs;
909 eind->dyn_relocs = NULL;
910 }
911
912 if (ind->root.type == bfd_link_hash_indirect
913 && dir->got.refcount <= 0)
914 {
915 edir->tls_type = eind->tls_type;
916 eind->tls_type = GOT_UNKNOWN;
917 }
918
919 if (ELIMINATE_COPY_RELOCS
920 && ind->root.type != bfd_link_hash_indirect
921 && dir->dynamic_adjusted)
922 {
923 /* If called to transfer flags for a weakdef during processing
924 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
925 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
926 dir->ref_dynamic |= ind->ref_dynamic;
927 dir->ref_regular |= ind->ref_regular;
928 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
929 dir->needs_plt |= ind->needs_plt;
930 }
931 else
932 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
933 }
934
935 static int
936 elf_s390_tls_transition (info, r_type, is_local)
937 struct bfd_link_info *info;
938 int r_type;
939 int is_local;
940 {
941 if (info->shared)
942 return r_type;
943
944 switch (r_type)
945 {
946 case R_390_TLS_GD32:
947 case R_390_TLS_IE32:
948 if (is_local)
949 return R_390_TLS_LE32;
950 return R_390_TLS_IE32;
951 case R_390_TLS_GOTIE32:
952 if (is_local)
953 return R_390_TLS_LE32;
954 return R_390_TLS_GOTIE32;
955 case R_390_TLS_LDM32:
956 return R_390_TLS_LE32;
957 }
958
959 return r_type;
960 }
961
962 /* Look through the relocs for a section during the first phase, and
963 allocate space in the global offset table or procedure linkage
964 table. */
965
966 static bfd_boolean
967 elf_s390_check_relocs (abfd, info, sec, relocs)
968 bfd *abfd;
969 struct bfd_link_info *info;
970 asection *sec;
971 const Elf_Internal_Rela *relocs;
972 {
973 struct elf_s390_link_hash_table *htab;
974 Elf_Internal_Shdr *symtab_hdr;
975 struct elf_link_hash_entry **sym_hashes;
976 const Elf_Internal_Rela *rel;
977 const Elf_Internal_Rela *rel_end;
978 asection *sreloc;
979 bfd_signed_vma *local_got_refcounts;
980 int tls_type, old_tls_type;
981
982 if (info->relocatable)
983 return TRUE;
984
985 htab = elf_s390_hash_table (info);
986 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
987 sym_hashes = elf_sym_hashes (abfd);
988 local_got_refcounts = elf_local_got_refcounts (abfd);
989
990 sreloc = NULL;
991
992 rel_end = relocs + sec->reloc_count;
993 for (rel = relocs; rel < rel_end; rel++)
994 {
995 unsigned int r_type;
996 unsigned long r_symndx;
997 struct elf_link_hash_entry *h;
998
999 r_symndx = ELF32_R_SYM (rel->r_info);
1000
1001 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1002 {
1003 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1004 abfd, r_symndx);
1005 return FALSE;
1006 }
1007
1008 if (r_symndx < symtab_hdr->sh_info)
1009 h = NULL;
1010 else
1011 {
1012 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1013 while (h->root.type == bfd_link_hash_indirect
1014 || h->root.type == bfd_link_hash_warning)
1015 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1016 }
1017
1018 /* Create got section and local_got_refcounts array if they
1019 are needed. */
1020 r_type = elf_s390_tls_transition (info,
1021 ELF32_R_TYPE (rel->r_info),
1022 h == NULL);
1023 switch (r_type)
1024 {
1025 case R_390_GOT12:
1026 case R_390_GOT16:
1027 case R_390_GOT20:
1028 case R_390_GOT32:
1029 case R_390_GOTENT:
1030 case R_390_GOTPLT12:
1031 case R_390_GOTPLT16:
1032 case R_390_GOTPLT20:
1033 case R_390_GOTPLT32:
1034 case R_390_GOTPLTENT:
1035 case R_390_TLS_GD32:
1036 case R_390_TLS_GOTIE12:
1037 case R_390_TLS_GOTIE20:
1038 case R_390_TLS_GOTIE32:
1039 case R_390_TLS_IEENT:
1040 case R_390_TLS_IE32:
1041 case R_390_TLS_LDM32:
1042 if (h == NULL
1043 && local_got_refcounts == NULL)
1044 {
1045 bfd_size_type size;
1046
1047 size = symtab_hdr->sh_info;
1048 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1049 local_got_refcounts = ((bfd_signed_vma *)
1050 bfd_zalloc (abfd, size));
1051 if (local_got_refcounts == NULL)
1052 return FALSE;
1053 elf_local_got_refcounts (abfd) = local_got_refcounts;
1054 elf_s390_local_got_tls_type (abfd)
1055 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1056 }
1057 /* Fall through. */
1058 case R_390_GOTOFF16:
1059 case R_390_GOTOFF32:
1060 case R_390_GOTPC:
1061 case R_390_GOTPCDBL:
1062 if (htab->sgot == NULL)
1063 {
1064 if (htab->elf.dynobj == NULL)
1065 htab->elf.dynobj = abfd;
1066 if (!create_got_section (htab->elf.dynobj, info))
1067 return FALSE;
1068 }
1069 }
1070
1071 switch (r_type)
1072 {
1073 case R_390_GOTOFF16:
1074 case R_390_GOTOFF32:
1075 case R_390_GOTPC:
1076 case R_390_GOTPCDBL:
1077 /* Got is created, nothing to be done. */
1078 break;
1079
1080 case R_390_PLT16DBL:
1081 case R_390_PLT32DBL:
1082 case R_390_PLT32:
1083 case R_390_PLTOFF16:
1084 case R_390_PLTOFF32:
1085 /* This symbol requires a procedure linkage table entry. We
1086 actually build the entry in adjust_dynamic_symbol,
1087 because this might be a case of linking PIC code which is
1088 never referenced by a dynamic object, in which case we
1089 don't need to generate a procedure linkage table entry
1090 after all. */
1091
1092 /* If this is a local symbol, we resolve it directly without
1093 creating a procedure linkage table entry. */
1094 if (h != NULL)
1095 {
1096 h->needs_plt = 1;
1097 h->plt.refcount += 1;
1098 }
1099 break;
1100
1101 case R_390_GOTPLT12:
1102 case R_390_GOTPLT16:
1103 case R_390_GOTPLT20:
1104 case R_390_GOTPLT32:
1105 case R_390_GOTPLTENT:
1106 /* This symbol requires either a procedure linkage table entry
1107 or an entry in the local got. We actually build the entry
1108 in adjust_dynamic_symbol because whether this is really a
1109 global reference can change and with it the fact if we have
1110 to create a plt entry or a local got entry. To be able to
1111 make a once global symbol a local one we have to keep track
1112 of the number of gotplt references that exist for this
1113 symbol. */
1114 if (h != NULL)
1115 {
1116 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1117 h->needs_plt = 1;
1118 h->plt.refcount += 1;
1119 }
1120 else
1121 local_got_refcounts[r_symndx] += 1;
1122 break;
1123
1124 case R_390_TLS_LDM32:
1125 htab->tls_ldm_got.refcount += 1;
1126 break;
1127
1128 case R_390_TLS_IE32:
1129 case R_390_TLS_GOTIE12:
1130 case R_390_TLS_GOTIE20:
1131 case R_390_TLS_GOTIE32:
1132 case R_390_TLS_IEENT:
1133 if (info->shared)
1134 info->flags |= DF_STATIC_TLS;
1135 /* Fall through. */
1136
1137 case R_390_GOT12:
1138 case R_390_GOT16:
1139 case R_390_GOT20:
1140 case R_390_GOT32:
1141 case R_390_GOTENT:
1142 case R_390_TLS_GD32:
1143 /* This symbol requires a global offset table entry. */
1144 switch (r_type)
1145 {
1146 default:
1147 case R_390_GOT12:
1148 case R_390_GOT16:
1149 case R_390_GOT20:
1150 case R_390_GOT32:
1151 case R_390_GOTENT:
1152 tls_type = GOT_NORMAL;
1153 break;
1154 case R_390_TLS_GD32:
1155 tls_type = GOT_TLS_GD;
1156 break;
1157 case R_390_TLS_IE32:
1158 case R_390_TLS_GOTIE32:
1159 tls_type = GOT_TLS_IE;
1160 break;
1161 case R_390_TLS_GOTIE12:
1162 case R_390_TLS_GOTIE20:
1163 case R_390_TLS_IEENT:
1164 tls_type = GOT_TLS_IE_NLT;
1165 break;
1166 }
1167
1168 if (h != NULL)
1169 {
1170 h->got.refcount += 1;
1171 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1172 }
1173 else
1174 {
1175 local_got_refcounts[r_symndx] += 1;
1176 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1177 }
1178 /* If a TLS symbol is accessed using IE at least once,
1179 there is no point to use dynamic model for it. */
1180 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1181 {
1182 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1183 {
1184 (*_bfd_error_handler)
1185 (_("%B: `%s' accessed both as normal and thread local symbol"),
1186 abfd, h->root.root.string);
1187 return FALSE;
1188 }
1189 if (old_tls_type > tls_type)
1190 tls_type = old_tls_type;
1191 }
1192
1193 if (old_tls_type != tls_type)
1194 {
1195 if (h != NULL)
1196 elf_s390_hash_entry (h)->tls_type = tls_type;
1197 else
1198 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1199 }
1200
1201 if (r_type != R_390_TLS_IE32)
1202 break;
1203 /* Fall through. */
1204
1205 case R_390_TLS_LE32:
1206 if (!info->shared)
1207 break;
1208 info->flags |= DF_STATIC_TLS;
1209 /* Fall through. */
1210
1211 case R_390_8:
1212 case R_390_16:
1213 case R_390_32:
1214 case R_390_PC16:
1215 case R_390_PC16DBL:
1216 case R_390_PC32DBL:
1217 case R_390_PC32:
1218 if (h != NULL && !info->shared)
1219 {
1220 /* If this reloc is in a read-only section, we might
1221 need a copy reloc. We can't check reliably at this
1222 stage whether the section is read-only, as input
1223 sections have not yet been mapped to output sections.
1224 Tentatively set the flag for now, and correct in
1225 adjust_dynamic_symbol. */
1226 h->non_got_ref = 1;
1227
1228 /* We may need a .plt entry if the function this reloc
1229 refers to is in a shared lib. */
1230 h->plt.refcount += 1;
1231 }
1232
1233 /* If we are creating a shared library, and this is a reloc
1234 against a global symbol, or a non PC relative reloc
1235 against a local symbol, then we need to copy the reloc
1236 into the shared library. However, if we are linking with
1237 -Bsymbolic, we do not need to copy a reloc against a
1238 global symbol which is defined in an object we are
1239 including in the link (i.e., DEF_REGULAR is set). At
1240 this point we have not seen all the input files, so it is
1241 possible that DEF_REGULAR is not set now but will be set
1242 later (it is never cleared). In case of a weak definition,
1243 DEF_REGULAR may be cleared later by a strong definition in
1244 a shared library. We account for that possibility below by
1245 storing information in the relocs_copied field of the hash
1246 table entry. A similar situation occurs when creating
1247 shared libraries and symbol visibility changes render the
1248 symbol local.
1249
1250 If on the other hand, we are creating an executable, we
1251 may need to keep relocations for symbols satisfied by a
1252 dynamic library if we manage to avoid copy relocs for the
1253 symbol. */
1254 if ((info->shared
1255 && (sec->flags & SEC_ALLOC) != 0
1256 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1257 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1258 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1259 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1260 || (h != NULL
1261 && (! info->symbolic
1262 || h->root.type == bfd_link_hash_defweak
1263 || !h->def_regular))))
1264 || (ELIMINATE_COPY_RELOCS
1265 && !info->shared
1266 && (sec->flags & SEC_ALLOC) != 0
1267 && h != NULL
1268 && (h->root.type == bfd_link_hash_defweak
1269 || !h->def_regular)))
1270 {
1271 struct elf_s390_dyn_relocs *p;
1272 struct elf_s390_dyn_relocs **head;
1273
1274 /* We must copy these reloc types into the output file.
1275 Create a reloc section in dynobj and make room for
1276 this reloc. */
1277 if (sreloc == NULL)
1278 {
1279 const char *name;
1280 bfd *dynobj;
1281
1282 name = (bfd_elf_string_from_elf_section
1283 (abfd,
1284 elf_elfheader (abfd)->e_shstrndx,
1285 elf_section_data (sec)->rel_hdr.sh_name));
1286 if (name == NULL)
1287 return FALSE;
1288
1289 if (! CONST_STRNEQ (name, ".rela")
1290 || strcmp (bfd_get_section_name (abfd, sec),
1291 name + 5) != 0)
1292 {
1293 (*_bfd_error_handler)
1294 (_("%B: bad relocation section name `%s\'"),
1295 abfd, name);
1296 }
1297
1298 if (htab->elf.dynobj == NULL)
1299 htab->elf.dynobj = abfd;
1300
1301 dynobj = htab->elf.dynobj;
1302 sreloc = bfd_get_section_by_name (dynobj, name);
1303 if (sreloc == NULL)
1304 {
1305 flagword flags;
1306
1307 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1308 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1309 if ((sec->flags & SEC_ALLOC) != 0)
1310 flags |= SEC_ALLOC | SEC_LOAD;
1311 sreloc = bfd_make_section_with_flags (dynobj,
1312 name,
1313 flags);
1314 if (sreloc == NULL
1315 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1316 return FALSE;
1317 }
1318 elf_section_data (sec)->sreloc = sreloc;
1319 }
1320
1321 /* If this is a global symbol, we count the number of
1322 relocations we need for this symbol. */
1323 if (h != NULL)
1324 {
1325 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1326 }
1327 else
1328 {
1329 /* Track dynamic relocs needed for local syms too.
1330 We really need local syms available to do this
1331 easily. Oh well. */
1332 asection *s;
1333 void *vpp;
1334
1335 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1336 sec, r_symndx);
1337 if (s == NULL)
1338 return FALSE;
1339
1340 vpp = &elf_section_data (s)->local_dynrel;
1341 head = (struct elf_s390_dyn_relocs **) vpp;
1342 }
1343
1344 p = *head;
1345 if (p == NULL || p->sec != sec)
1346 {
1347 bfd_size_type amt = sizeof *p;
1348
1349 p = ((struct elf_s390_dyn_relocs *)
1350 bfd_alloc (htab->elf.dynobj, amt));
1351 if (p == NULL)
1352 return FALSE;
1353 p->next = *head;
1354 *head = p;
1355 p->sec = sec;
1356 p->count = 0;
1357 p->pc_count = 0;
1358 }
1359
1360 p->count += 1;
1361 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1362 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1363 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1364 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1365 p->pc_count += 1;
1366 }
1367 break;
1368
1369 /* This relocation describes the C++ object vtable hierarchy.
1370 Reconstruct it for later use during GC. */
1371 case R_390_GNU_VTINHERIT:
1372 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1373 return FALSE;
1374 break;
1375
1376 /* This relocation describes which C++ vtable entries are actually
1377 used. Record for later use during GC. */
1378 case R_390_GNU_VTENTRY:
1379 BFD_ASSERT (h != NULL);
1380 if (h != NULL
1381 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1382 return FALSE;
1383 break;
1384
1385 default:
1386 break;
1387 }
1388 }
1389
1390 return TRUE;
1391 }
1392
1393 /* Return the section that should be marked against GC for a given
1394 relocation. */
1395
1396 static asection *
1397 elf_s390_gc_mark_hook (asection *sec,
1398 struct bfd_link_info *info,
1399 Elf_Internal_Rela *rel,
1400 struct elf_link_hash_entry *h,
1401 Elf_Internal_Sym *sym)
1402 {
1403 if (h != NULL)
1404 switch (ELF32_R_TYPE (rel->r_info))
1405 {
1406 case R_390_GNU_VTINHERIT:
1407 case R_390_GNU_VTENTRY:
1408 return NULL;
1409 }
1410 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1411
1412 }
1413
1414 /* Update the got entry reference counts for the section being removed. */
1415
1416 static bfd_boolean
1417 elf_s390_gc_sweep_hook (bfd *abfd,
1418 struct bfd_link_info *info,
1419 asection *sec,
1420 const Elf_Internal_Rela *relocs)
1421 {
1422 Elf_Internal_Shdr *symtab_hdr;
1423 struct elf_link_hash_entry **sym_hashes;
1424 bfd_signed_vma *local_got_refcounts;
1425 const Elf_Internal_Rela *rel, *relend;
1426
1427 if (info->relocatable)
1428 return TRUE;
1429
1430 elf_section_data (sec)->local_dynrel = NULL;
1431
1432 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1433 sym_hashes = elf_sym_hashes (abfd);
1434 local_got_refcounts = elf_local_got_refcounts (abfd);
1435
1436 relend = relocs + sec->reloc_count;
1437 for (rel = relocs; rel < relend; rel++)
1438 {
1439 unsigned long r_symndx;
1440 unsigned int r_type;
1441 struct elf_link_hash_entry *h = NULL;
1442
1443 r_symndx = ELF32_R_SYM (rel->r_info);
1444 if (r_symndx >= symtab_hdr->sh_info)
1445 {
1446 struct elf_s390_link_hash_entry *eh;
1447 struct elf_s390_dyn_relocs **pp;
1448 struct elf_s390_dyn_relocs *p;
1449
1450 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1451 while (h->root.type == bfd_link_hash_indirect
1452 || h->root.type == bfd_link_hash_warning)
1453 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1454 eh = (struct elf_s390_link_hash_entry *) h;
1455
1456 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1457 if (p->sec == sec)
1458 {
1459 /* Everything must go for SEC. */
1460 *pp = p->next;
1461 break;
1462 }
1463 }
1464
1465 r_type = ELF32_R_TYPE (rel->r_info);
1466 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1467 switch (r_type)
1468 {
1469 case R_390_TLS_LDM32:
1470 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1471 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1472 break;
1473
1474 case R_390_TLS_GD32:
1475 case R_390_TLS_IE32:
1476 case R_390_TLS_GOTIE12:
1477 case R_390_TLS_GOTIE20:
1478 case R_390_TLS_GOTIE32:
1479 case R_390_TLS_IEENT:
1480 case R_390_GOT12:
1481 case R_390_GOT16:
1482 case R_390_GOT20:
1483 case R_390_GOT32:
1484 case R_390_GOTOFF16:
1485 case R_390_GOTOFF32:
1486 case R_390_GOTPC:
1487 case R_390_GOTPCDBL:
1488 case R_390_GOTENT:
1489 if (h != NULL)
1490 {
1491 if (h->got.refcount > 0)
1492 h->got.refcount -= 1;
1493 }
1494 else if (local_got_refcounts != NULL)
1495 {
1496 if (local_got_refcounts[r_symndx] > 0)
1497 local_got_refcounts[r_symndx] -= 1;
1498 }
1499 break;
1500
1501 case R_390_8:
1502 case R_390_12:
1503 case R_390_16:
1504 case R_390_20:
1505 case R_390_32:
1506 case R_390_PC16:
1507 case R_390_PC16DBL:
1508 case R_390_PC32DBL:
1509 case R_390_PC32:
1510 if (info->shared)
1511 break;
1512 /* Fall through. */
1513
1514 case R_390_PLT16DBL:
1515 case R_390_PLT32DBL:
1516 case R_390_PLT32:
1517 case R_390_PLTOFF16:
1518 case R_390_PLTOFF32:
1519 if (h != NULL)
1520 {
1521 if (h->plt.refcount > 0)
1522 h->plt.refcount -= 1;
1523 }
1524 break;
1525
1526 case R_390_GOTPLT12:
1527 case R_390_GOTPLT16:
1528 case R_390_GOTPLT20:
1529 case R_390_GOTPLT32:
1530 case R_390_GOTPLTENT:
1531 if (h != NULL)
1532 {
1533 if (h->plt.refcount > 0)
1534 {
1535 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1536 h->plt.refcount -= 1;
1537 }
1538 }
1539 else if (local_got_refcounts != NULL)
1540 {
1541 if (local_got_refcounts[r_symndx] > 0)
1542 local_got_refcounts[r_symndx] -= 1;
1543 }
1544 break;
1545
1546 default:
1547 break;
1548 }
1549 }
1550
1551 return TRUE;
1552 }
1553
1554 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1555 entry but we found we will not create any. Called when we find we will
1556 not have any PLT for this symbol, by for example
1557 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1558 or elf_s390_size_dynamic_sections if no dynamic sections will be
1559 created (we're only linking static objects). */
1560
1561 static void
1562 elf_s390_adjust_gotplt (h)
1563 struct elf_s390_link_hash_entry *h;
1564 {
1565 if (h->elf.root.type == bfd_link_hash_warning)
1566 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1567
1568 if (h->gotplt_refcount <= 0)
1569 return;
1570
1571 /* We simply add the number of gotplt references to the number
1572 * of got references for this symbol. */
1573 h->elf.got.refcount += h->gotplt_refcount;
1574 h->gotplt_refcount = -1;
1575 }
1576
1577 /* Adjust a symbol defined by a dynamic object and referenced by a
1578 regular object. The current definition is in some section of the
1579 dynamic object, but we're not including those sections. We have to
1580 change the definition to something the rest of the link can
1581 understand. */
1582
1583 static bfd_boolean
1584 elf_s390_adjust_dynamic_symbol (info, h)
1585 struct bfd_link_info *info;
1586 struct elf_link_hash_entry *h;
1587 {
1588 struct elf_s390_link_hash_table *htab;
1589 asection *s;
1590
1591 /* If this is a function, put it in the procedure linkage table. We
1592 will fill in the contents of the procedure linkage table later
1593 (although we could actually do it here). */
1594 if (h->type == STT_FUNC
1595 || h->needs_plt)
1596 {
1597 if (h->plt.refcount <= 0
1598 || (! info->shared
1599 && !h->def_dynamic
1600 && !h->ref_dynamic
1601 && h->root.type != bfd_link_hash_undefweak
1602 && h->root.type != bfd_link_hash_undefined))
1603 {
1604 /* This case can occur if we saw a PLT32 reloc in an input
1605 file, but the symbol was never referred to by a dynamic
1606 object, or if all references were garbage collected. In
1607 such a case, we don't actually need to build a procedure
1608 linkage table, and we can just do a PC32 reloc instead. */
1609 h->plt.offset = (bfd_vma) -1;
1610 h->needs_plt = 0;
1611 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1612 }
1613
1614 return TRUE;
1615 }
1616 else
1617 /* It's possible that we incorrectly decided a .plt reloc was
1618 needed for an R_390_PC32 reloc to a non-function sym in
1619 check_relocs. We can't decide accurately between function and
1620 non-function syms in check-relocs; Objects loaded later in
1621 the link may change h->type. So fix it now. */
1622 h->plt.offset = (bfd_vma) -1;
1623
1624 /* If this is a weak symbol, and there is a real definition, the
1625 processor independent code will have arranged for us to see the
1626 real definition first, and we can just use the same value. */
1627 if (h->u.weakdef != NULL)
1628 {
1629 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1630 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1631 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1632 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1633 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1634 h->non_got_ref = h->u.weakdef->non_got_ref;
1635 return TRUE;
1636 }
1637
1638 /* This is a reference to a symbol defined by a dynamic object which
1639 is not a function. */
1640
1641 /* If we are creating a shared library, we must presume that the
1642 only references to the symbol are via the global offset table.
1643 For such cases we need not do anything here; the relocations will
1644 be handled correctly by relocate_section. */
1645 if (info->shared)
1646 return TRUE;
1647
1648 /* If there are no references to this symbol that do not use the
1649 GOT, we don't need to generate a copy reloc. */
1650 if (!h->non_got_ref)
1651 return TRUE;
1652
1653 /* If -z nocopyreloc was given, we won't generate them either. */
1654 if (info->nocopyreloc)
1655 {
1656 h->non_got_ref = 0;
1657 return TRUE;
1658 }
1659
1660 if (ELIMINATE_COPY_RELOCS)
1661 {
1662 struct elf_s390_link_hash_entry * eh;
1663 struct elf_s390_dyn_relocs *p;
1664
1665 eh = (struct elf_s390_link_hash_entry *) h;
1666 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1667 {
1668 s = p->sec->output_section;
1669 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1670 break;
1671 }
1672
1673 /* If we didn't find any dynamic relocs in read-only sections, then
1674 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1675 if (p == NULL)
1676 {
1677 h->non_got_ref = 0;
1678 return TRUE;
1679 }
1680 }
1681
1682 if (h->size == 0)
1683 {
1684 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1685 h->root.root.string);
1686 return TRUE;
1687 }
1688
1689 /* We must allocate the symbol in our .dynbss section, which will
1690 become part of the .bss section of the executable. There will be
1691 an entry for this symbol in the .dynsym section. The dynamic
1692 object will contain position independent code, so all references
1693 from the dynamic object to this symbol will go through the global
1694 offset table. The dynamic linker will use the .dynsym entry to
1695 determine the address it must put in the global offset table, so
1696 both the dynamic object and the regular object will refer to the
1697 same memory location for the variable. */
1698
1699 htab = elf_s390_hash_table (info);
1700
1701 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1702 copy the initial value out of the dynamic object and into the
1703 runtime process image. */
1704 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1705 {
1706 htab->srelbss->size += sizeof (Elf32_External_Rela);
1707 h->needs_copy = 1;
1708 }
1709
1710 s = htab->sdynbss;
1711
1712 return _bfd_elf_adjust_dynamic_copy (h, s);
1713 }
1714
1715 /* Allocate space in .plt, .got and associated reloc sections for
1716 dynamic relocs. */
1717
1718 static bfd_boolean
1719 allocate_dynrelocs (h, inf)
1720 struct elf_link_hash_entry *h;
1721 PTR inf;
1722 {
1723 struct bfd_link_info *info;
1724 struct elf_s390_link_hash_table *htab;
1725 struct elf_s390_link_hash_entry *eh;
1726 struct elf_s390_dyn_relocs *p;
1727
1728 if (h->root.type == bfd_link_hash_indirect)
1729 return TRUE;
1730
1731 if (h->root.type == bfd_link_hash_warning)
1732 /* When warning symbols are created, they **replace** the "real"
1733 entry in the hash table, thus we never get to see the real
1734 symbol in a hash traversal. So look at it now. */
1735 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1736
1737 info = (struct bfd_link_info *) inf;
1738 htab = elf_s390_hash_table (info);
1739
1740 if (htab->elf.dynamic_sections_created
1741 && h->plt.refcount > 0
1742 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1743 || h->root.type != bfd_link_hash_undefweak))
1744 {
1745 /* Make sure this symbol is output as a dynamic symbol.
1746 Undefined weak syms won't yet be marked as dynamic. */
1747 if (h->dynindx == -1
1748 && !h->forced_local)
1749 {
1750 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1751 return FALSE;
1752 }
1753
1754 if (info->shared
1755 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1756 {
1757 asection *s = htab->splt;
1758
1759 /* If this is the first .plt entry, make room for the special
1760 first entry. */
1761 if (s->size == 0)
1762 s->size += PLT_FIRST_ENTRY_SIZE;
1763
1764 h->plt.offset = s->size;
1765
1766 /* If this symbol is not defined in a regular file, and we are
1767 not generating a shared library, then set the symbol to this
1768 location in the .plt. This is required to make function
1769 pointers compare as equal between the normal executable and
1770 the shared library. */
1771 if (! info->shared
1772 && !h->def_regular)
1773 {
1774 h->root.u.def.section = s;
1775 h->root.u.def.value = h->plt.offset;
1776 }
1777
1778 /* Make room for this entry. */
1779 s->size += PLT_ENTRY_SIZE;
1780
1781 /* We also need to make an entry in the .got.plt section, which
1782 will be placed in the .got section by the linker script. */
1783 htab->sgotplt->size += GOT_ENTRY_SIZE;
1784
1785 /* We also need to make an entry in the .rela.plt section. */
1786 htab->srelplt->size += sizeof (Elf32_External_Rela);
1787 }
1788 else
1789 {
1790 h->plt.offset = (bfd_vma) -1;
1791 h->needs_plt = 0;
1792 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1793 }
1794 }
1795 else
1796 {
1797 h->plt.offset = (bfd_vma) -1;
1798 h->needs_plt = 0;
1799 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1800 }
1801
1802 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1803 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1804 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1805 we can save the dynamic TLS relocation. */
1806 if (h->got.refcount > 0
1807 && !info->shared
1808 && h->dynindx == -1
1809 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1810 {
1811 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1812 /* For the GOTIE access without a literal pool entry the offset has
1813 to be stored somewhere. The immediate value in the instruction
1814 is not bit enough so the value is stored in the got. */
1815 {
1816 h->got.offset = htab->sgot->size;
1817 htab->sgot->size += GOT_ENTRY_SIZE;
1818 }
1819 else
1820 h->got.offset = (bfd_vma) -1;
1821 }
1822 else if (h->got.refcount > 0)
1823 {
1824 asection *s;
1825 bfd_boolean dyn;
1826 int tls_type = elf_s390_hash_entry(h)->tls_type;
1827
1828 /* Make sure this symbol is output as a dynamic symbol.
1829 Undefined weak syms won't yet be marked as dynamic. */
1830 if (h->dynindx == -1
1831 && !h->forced_local)
1832 {
1833 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1834 return FALSE;
1835 }
1836
1837 s = htab->sgot;
1838 h->got.offset = s->size;
1839 s->size += GOT_ENTRY_SIZE;
1840 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1841 if (tls_type == GOT_TLS_GD)
1842 s->size += GOT_ENTRY_SIZE;
1843 dyn = htab->elf.dynamic_sections_created;
1844 /* R_390_TLS_IE32 needs one dynamic relocation,
1845 R_390_TLS_GD32 needs one if local symbol and two if global. */
1846 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1847 || tls_type >= GOT_TLS_IE)
1848 htab->srelgot->size += sizeof (Elf32_External_Rela);
1849 else if (tls_type == GOT_TLS_GD)
1850 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1851 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1852 || h->root.type != bfd_link_hash_undefweak)
1853 && (info->shared
1854 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1855 htab->srelgot->size += sizeof (Elf32_External_Rela);
1856 }
1857 else
1858 h->got.offset = (bfd_vma) -1;
1859
1860 eh = (struct elf_s390_link_hash_entry *) h;
1861 if (eh->dyn_relocs == NULL)
1862 return TRUE;
1863
1864 /* In the shared -Bsymbolic case, discard space allocated for
1865 dynamic pc-relative relocs against symbols which turn out to be
1866 defined in regular objects. For the normal shared case, discard
1867 space for pc-relative relocs that have become local due to symbol
1868 visibility changes. */
1869
1870 if (info->shared)
1871 {
1872 if (SYMBOL_REFERENCES_LOCAL (info, h))
1873 {
1874 struct elf_s390_dyn_relocs **pp;
1875
1876 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1877 {
1878 p->count -= p->pc_count;
1879 p->pc_count = 0;
1880 if (p->count == 0)
1881 *pp = p->next;
1882 else
1883 pp = &p->next;
1884 }
1885 }
1886
1887 /* Also discard relocs on undefined weak syms with non-default
1888 visibility. */
1889 if (eh->dyn_relocs != NULL
1890 && h->root.type == bfd_link_hash_undefweak)
1891 {
1892 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1893 eh->dyn_relocs = NULL;
1894
1895 /* Make sure undefined weak symbols are output as a dynamic
1896 symbol in PIEs. */
1897 else if (h->dynindx == -1
1898 && !h->forced_local)
1899 {
1900 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1901 return FALSE;
1902 }
1903 }
1904 }
1905 else if (ELIMINATE_COPY_RELOCS)
1906 {
1907 /* For the non-shared case, discard space for relocs against
1908 symbols which turn out to need copy relocs or are not
1909 dynamic. */
1910
1911 if (!h->non_got_ref
1912 && ((h->def_dynamic
1913 && !h->def_regular)
1914 || (htab->elf.dynamic_sections_created
1915 && (h->root.type == bfd_link_hash_undefweak
1916 || h->root.type == bfd_link_hash_undefined))))
1917 {
1918 /* Make sure this symbol is output as a dynamic symbol.
1919 Undefined weak syms won't yet be marked as dynamic. */
1920 if (h->dynindx == -1
1921 && !h->forced_local)
1922 {
1923 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1924 return FALSE;
1925 }
1926
1927 /* If that succeeded, we know we'll be keeping all the
1928 relocs. */
1929 if (h->dynindx != -1)
1930 goto keep;
1931 }
1932
1933 eh->dyn_relocs = NULL;
1934
1935 keep: ;
1936 }
1937
1938 /* Finally, allocate space. */
1939 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1940 {
1941 asection *sreloc = elf_section_data (p->sec)->sreloc;
1942
1943 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1944 }
1945
1946 return TRUE;
1947 }
1948
1949 /* Find any dynamic relocs that apply to read-only sections. */
1950
1951 static bfd_boolean
1952 readonly_dynrelocs (h, inf)
1953 struct elf_link_hash_entry *h;
1954 PTR inf;
1955 {
1956 struct elf_s390_link_hash_entry *eh;
1957 struct elf_s390_dyn_relocs *p;
1958
1959 if (h->root.type == bfd_link_hash_warning)
1960 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1961
1962 eh = (struct elf_s390_link_hash_entry *) h;
1963 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1964 {
1965 asection *s = p->sec->output_section;
1966
1967 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1968 {
1969 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1970
1971 info->flags |= DF_TEXTREL;
1972
1973 /* Not an error, just cut short the traversal. */
1974 return FALSE;
1975 }
1976 }
1977 return TRUE;
1978 }
1979
1980 /* Set the sizes of the dynamic sections. */
1981
1982 static bfd_boolean
1983 elf_s390_size_dynamic_sections (output_bfd, info)
1984 bfd *output_bfd ATTRIBUTE_UNUSED;
1985 struct bfd_link_info *info;
1986 {
1987 struct elf_s390_link_hash_table *htab;
1988 bfd *dynobj;
1989 asection *s;
1990 bfd_boolean relocs;
1991 bfd *ibfd;
1992
1993 htab = elf_s390_hash_table (info);
1994 dynobj = htab->elf.dynobj;
1995 if (dynobj == NULL)
1996 abort ();
1997
1998 if (htab->elf.dynamic_sections_created)
1999 {
2000 /* Set the contents of the .interp section to the interpreter. */
2001 if (info->executable)
2002 {
2003 s = bfd_get_section_by_name (dynobj, ".interp");
2004 if (s == NULL)
2005 abort ();
2006 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2007 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2008 }
2009 }
2010
2011 /* Set up .got offsets for local syms, and space for local dynamic
2012 relocs. */
2013 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2014 {
2015 bfd_signed_vma *local_got;
2016 bfd_signed_vma *end_local_got;
2017 char *local_tls_type;
2018 bfd_size_type locsymcount;
2019 Elf_Internal_Shdr *symtab_hdr;
2020 asection *srela;
2021
2022 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2023 continue;
2024
2025 for (s = ibfd->sections; s != NULL; s = s->next)
2026 {
2027 struct elf_s390_dyn_relocs *p;
2028
2029 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2030 {
2031 if (!bfd_is_abs_section (p->sec)
2032 && bfd_is_abs_section (p->sec->output_section))
2033 {
2034 /* Input section has been discarded, either because
2035 it is a copy of a linkonce section or due to
2036 linker script /DISCARD/, so we'll be discarding
2037 the relocs too. */
2038 }
2039 else if (p->count != 0)
2040 {
2041 srela = elf_section_data (p->sec)->sreloc;
2042 srela->size += p->count * sizeof (Elf32_External_Rela);
2043 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2044 info->flags |= DF_TEXTREL;
2045 }
2046 }
2047 }
2048
2049 local_got = elf_local_got_refcounts (ibfd);
2050 if (!local_got)
2051 continue;
2052
2053 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2054 locsymcount = symtab_hdr->sh_info;
2055 end_local_got = local_got + locsymcount;
2056 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2057 s = htab->sgot;
2058 srela = htab->srelgot;
2059 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2060 {
2061 if (*local_got > 0)
2062 {
2063 *local_got = s->size;
2064 s->size += GOT_ENTRY_SIZE;
2065 if (*local_tls_type == GOT_TLS_GD)
2066 s->size += GOT_ENTRY_SIZE;
2067 if (info->shared)
2068 srela->size += sizeof (Elf32_External_Rela);
2069 }
2070 else
2071 *local_got = (bfd_vma) -1;
2072 }
2073 }
2074
2075 if (htab->tls_ldm_got.refcount > 0)
2076 {
2077 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2078 relocs. */
2079 htab->tls_ldm_got.offset = htab->sgot->size;
2080 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2081 htab->srelgot->size += sizeof (Elf32_External_Rela);
2082 }
2083 else
2084 htab->tls_ldm_got.offset = -1;
2085
2086 /* Allocate global sym .plt and .got entries, and space for global
2087 sym dynamic relocs. */
2088 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2089
2090 /* We now have determined the sizes of the various dynamic sections.
2091 Allocate memory for them. */
2092 relocs = FALSE;
2093 for (s = dynobj->sections; s != NULL; s = s->next)
2094 {
2095 if ((s->flags & SEC_LINKER_CREATED) == 0)
2096 continue;
2097
2098 if (s == htab->splt
2099 || s == htab->sgot
2100 || s == htab->sgotplt
2101 || s == htab->sdynbss)
2102 {
2103 /* Strip this section if we don't need it; see the
2104 comment below. */
2105 }
2106 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2107 {
2108 if (s->size != 0)
2109 relocs = TRUE;
2110
2111 /* We use the reloc_count field as a counter if we need
2112 to copy relocs into the output file. */
2113 s->reloc_count = 0;
2114 }
2115 else
2116 {
2117 /* It's not one of our sections, so don't allocate space. */
2118 continue;
2119 }
2120
2121 if (s->size == 0)
2122 {
2123 /* If we don't need this section, strip it from the
2124 output file. This is to handle .rela.bss and
2125 .rela.plt. We must create it in
2126 create_dynamic_sections, because it must be created
2127 before the linker maps input sections to output
2128 sections. The linker does that before
2129 adjust_dynamic_symbol is called, and it is that
2130 function which decides whether anything needs to go
2131 into these sections. */
2132
2133 s->flags |= SEC_EXCLUDE;
2134 continue;
2135 }
2136
2137 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2138 continue;
2139
2140 /* Allocate memory for the section contents. We use bfd_zalloc
2141 here in case unused entries are not reclaimed before the
2142 section's contents are written out. This should not happen,
2143 but this way if it does, we get a R_390_NONE reloc instead
2144 of garbage. */
2145 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2146 if (s->contents == NULL)
2147 return FALSE;
2148 }
2149
2150 if (htab->elf.dynamic_sections_created)
2151 {
2152 /* Add some entries to the .dynamic section. We fill in the
2153 values later, in elf_s390_finish_dynamic_sections, but we
2154 must add the entries now so that we get the correct size for
2155 the .dynamic section. The DT_DEBUG entry is filled in by the
2156 dynamic linker and used by the debugger. */
2157 #define add_dynamic_entry(TAG, VAL) \
2158 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2159
2160 if (info->executable)
2161 {
2162 if (!add_dynamic_entry (DT_DEBUG, 0))
2163 return FALSE;
2164 }
2165
2166 if (htab->splt->size != 0)
2167 {
2168 if (!add_dynamic_entry (DT_PLTGOT, 0)
2169 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2170 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2171 || !add_dynamic_entry (DT_JMPREL, 0))
2172 return FALSE;
2173 }
2174
2175 if (relocs)
2176 {
2177 if (!add_dynamic_entry (DT_RELA, 0)
2178 || !add_dynamic_entry (DT_RELASZ, 0)
2179 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2180 return FALSE;
2181
2182 /* If any dynamic relocs apply to a read-only section,
2183 then we need a DT_TEXTREL entry. */
2184 if ((info->flags & DF_TEXTREL) == 0)
2185 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2186 (PTR) info);
2187
2188 if ((info->flags & DF_TEXTREL) != 0)
2189 {
2190 if (!add_dynamic_entry (DT_TEXTREL, 0))
2191 return FALSE;
2192 }
2193 }
2194 }
2195 #undef add_dynamic_entry
2196
2197 return TRUE;
2198 }
2199
2200 /* Return the base VMA address which should be subtracted from real addresses
2201 when resolving @dtpoff relocation.
2202 This is PT_TLS segment p_vaddr. */
2203
2204 static bfd_vma
2205 dtpoff_base (info)
2206 struct bfd_link_info *info;
2207 {
2208 /* If tls_sec is NULL, we should have signalled an error already. */
2209 if (elf_hash_table (info)->tls_sec == NULL)
2210 return 0;
2211 return elf_hash_table (info)->tls_sec->vma;
2212 }
2213
2214 /* Return the relocation value for @tpoff relocation
2215 if STT_TLS virtual address is ADDRESS. */
2216
2217 static bfd_vma
2218 tpoff (info, address)
2219 struct bfd_link_info *info;
2220 bfd_vma address;
2221 {
2222 struct elf_link_hash_table *htab = elf_hash_table (info);
2223
2224 /* If tls_sec is NULL, we should have signalled an error already. */
2225 if (htab->tls_sec == NULL)
2226 return 0;
2227 return htab->tls_size + htab->tls_sec->vma - address;
2228 }
2229
2230 /* Complain if TLS instruction relocation is against an invalid
2231 instruction. */
2232
2233 static void
2234 invalid_tls_insn (input_bfd, input_section, rel)
2235 bfd *input_bfd;
2236 asection *input_section;
2237 Elf_Internal_Rela *rel;
2238 {
2239 reloc_howto_type *howto;
2240
2241 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2242 (*_bfd_error_handler)
2243 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2244 input_bfd,
2245 input_section,
2246 (long) rel->r_offset,
2247 howto->name);
2248 bfd_set_error (bfd_error_bad_value);
2249 }
2250
2251 /* Relocate a 390 ELF section. */
2252
2253 static bfd_boolean
2254 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2255 contents, relocs, local_syms, local_sections)
2256 bfd *output_bfd;
2257 struct bfd_link_info *info;
2258 bfd *input_bfd;
2259 asection *input_section;
2260 bfd_byte *contents;
2261 Elf_Internal_Rela *relocs;
2262 Elf_Internal_Sym *local_syms;
2263 asection **local_sections;
2264 {
2265 struct elf_s390_link_hash_table *htab;
2266 Elf_Internal_Shdr *symtab_hdr;
2267 struct elf_link_hash_entry **sym_hashes;
2268 bfd_vma *local_got_offsets;
2269 Elf_Internal_Rela *rel;
2270 Elf_Internal_Rela *relend;
2271
2272 htab = elf_s390_hash_table (info);
2273 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2274 sym_hashes = elf_sym_hashes (input_bfd);
2275 local_got_offsets = elf_local_got_offsets (input_bfd);
2276
2277 rel = relocs;
2278 relend = relocs + input_section->reloc_count;
2279 for (; rel < relend; rel++)
2280 {
2281 unsigned int r_type;
2282 reloc_howto_type *howto;
2283 unsigned long r_symndx;
2284 struct elf_link_hash_entry *h;
2285 Elf_Internal_Sym *sym;
2286 asection *sec;
2287 bfd_vma off;
2288 bfd_vma relocation;
2289 bfd_boolean unresolved_reloc;
2290 bfd_reloc_status_type r;
2291 int tls_type;
2292
2293 r_type = ELF32_R_TYPE (rel->r_info);
2294 if (r_type == (int) R_390_GNU_VTINHERIT
2295 || r_type == (int) R_390_GNU_VTENTRY)
2296 continue;
2297 if (r_type >= (int) R_390_max)
2298 {
2299 bfd_set_error (bfd_error_bad_value);
2300 return FALSE;
2301 }
2302
2303 howto = elf_howto_table + r_type;
2304 r_symndx = ELF32_R_SYM (rel->r_info);
2305
2306 h = NULL;
2307 sym = NULL;
2308 sec = NULL;
2309 unresolved_reloc = FALSE;
2310 if (r_symndx < symtab_hdr->sh_info)
2311 {
2312 sym = local_syms + r_symndx;
2313 sec = local_sections[r_symndx];
2314 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2315 }
2316 else
2317 {
2318 bfd_boolean warned ATTRIBUTE_UNUSED;
2319
2320 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2321 r_symndx, symtab_hdr, sym_hashes,
2322 h, sec, relocation,
2323 unresolved_reloc, warned);
2324 }
2325
2326 if (sec != NULL && elf_discarded_section (sec))
2327 {
2328 /* For relocs against symbols from removed linkonce sections,
2329 or sections discarded by a linker script, we just want the
2330 section contents zeroed. Avoid any special processing. */
2331 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2332 rel->r_info = 0;
2333 rel->r_addend = 0;
2334 continue;
2335 }
2336
2337 if (info->relocatable)
2338 continue;
2339
2340 switch (r_type)
2341 {
2342 case R_390_GOTPLT12:
2343 case R_390_GOTPLT16:
2344 case R_390_GOTPLT20:
2345 case R_390_GOTPLT32:
2346 case R_390_GOTPLTENT:
2347 /* There are three cases for a GOTPLT relocation. 1) The
2348 relocation is against the jump slot entry of a plt that
2349 will get emitted to the output file. 2) The relocation
2350 is against the jump slot of a plt entry that has been
2351 removed. elf_s390_adjust_gotplt has created a GOT entry
2352 as replacement. 3) The relocation is against a local symbol.
2353 Cases 2) and 3) are the same as the GOT relocation code
2354 so we just have to test for case 1 and fall through for
2355 the other two. */
2356 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2357 {
2358 bfd_vma plt_index;
2359
2360 /* Calc. index no.
2361 Current offset - size first entry / entry size. */
2362 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2363 PLT_ENTRY_SIZE;
2364
2365 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2366 addr & GOT addr. */
2367 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2368 unresolved_reloc = FALSE;
2369
2370 if (r_type == R_390_GOTPLTENT)
2371 relocation += htab->sgot->output_section->vma;
2372 break;
2373 }
2374 /* Fall through. */
2375
2376 case R_390_GOT12:
2377 case R_390_GOT16:
2378 case R_390_GOT20:
2379 case R_390_GOT32:
2380 case R_390_GOTENT:
2381 /* Relocation is to the entry for this symbol in the global
2382 offset table. */
2383 if (htab->sgot == NULL)
2384 abort ();
2385
2386 if (h != NULL)
2387 {
2388 bfd_boolean dyn;
2389
2390 off = h->got.offset;
2391 dyn = htab->elf.dynamic_sections_created;
2392 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2393 || (info->shared
2394 && (info->symbolic
2395 || h->dynindx == -1
2396 || h->forced_local)
2397 && h->def_regular)
2398 || (ELF_ST_VISIBILITY (h->other)
2399 && h->root.type == bfd_link_hash_undefweak))
2400 {
2401 /* This is actually a static link, or it is a
2402 -Bsymbolic link and the symbol is defined
2403 locally, or the symbol was forced to be local
2404 because of a version file. We must initialize
2405 this entry in the global offset table. Since the
2406 offset must always be a multiple of 2, we use the
2407 least significant bit to record whether we have
2408 initialized it already.
2409
2410 When doing a dynamic link, we create a .rel.got
2411 relocation entry to initialize the value. This
2412 is done in the finish_dynamic_symbol routine. */
2413 if ((off & 1) != 0)
2414 off &= ~1;
2415 else
2416 {
2417 bfd_put_32 (output_bfd, relocation,
2418 htab->sgot->contents + off);
2419 h->got.offset |= 1;
2420 }
2421 }
2422 else
2423 unresolved_reloc = FALSE;
2424 }
2425 else
2426 {
2427 if (local_got_offsets == NULL)
2428 abort ();
2429
2430 off = local_got_offsets[r_symndx];
2431
2432 /* The offset must always be a multiple of 4. We use
2433 the least significant bit to record whether we have
2434 already generated the necessary reloc. */
2435 if ((off & 1) != 0)
2436 off &= ~1;
2437 else
2438 {
2439 bfd_put_32 (output_bfd, relocation,
2440 htab->sgot->contents + off);
2441
2442 if (info->shared)
2443 {
2444 asection *srelgot;
2445 Elf_Internal_Rela outrel;
2446 bfd_byte *loc;
2447
2448 srelgot = htab->srelgot;
2449 if (srelgot == NULL)
2450 abort ();
2451
2452 outrel.r_offset = (htab->sgot->output_section->vma
2453 + htab->sgot->output_offset
2454 + off);
2455 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2456 outrel.r_addend = relocation;
2457 loc = srelgot->contents;
2458 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2459 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2460 }
2461
2462 local_got_offsets[r_symndx] |= 1;
2463 }
2464 }
2465
2466 if (off >= (bfd_vma) -2)
2467 abort ();
2468
2469 relocation = htab->sgot->output_offset + off;
2470
2471 /* For @GOTENT the relocation is against the offset between
2472 the instruction and the symbols entry in the GOT and not
2473 between the start of the GOT and the symbols entry. We
2474 add the vma of the GOT to get the correct value. */
2475 if ( r_type == R_390_GOTENT
2476 || r_type == R_390_GOTPLTENT)
2477 relocation += htab->sgot->output_section->vma;
2478
2479 break;
2480
2481 case R_390_GOTOFF16:
2482 case R_390_GOTOFF32:
2483 /* Relocation is relative to the start of the global offset
2484 table. */
2485
2486 /* Note that sgot->output_offset is not involved in this
2487 calculation. We always want the start of .got. If we
2488 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2489 permitted by the ABI, we might have to change this
2490 calculation. */
2491 relocation -= htab->sgot->output_section->vma;
2492 break;
2493
2494 case R_390_GOTPC:
2495 case R_390_GOTPCDBL:
2496 /* Use global offset table as symbol value. */
2497 relocation = htab->sgot->output_section->vma;
2498 unresolved_reloc = FALSE;
2499 break;
2500
2501 case R_390_PLT16DBL:
2502 case R_390_PLT32DBL:
2503 case R_390_PLT32:
2504 /* Relocation is to the entry for this symbol in the
2505 procedure linkage table. */
2506
2507 /* Resolve a PLT32 reloc against a local symbol directly,
2508 without using the procedure linkage table. */
2509 if (h == NULL)
2510 break;
2511
2512 if (h->plt.offset == (bfd_vma) -1
2513 || htab->splt == NULL)
2514 {
2515 /* We didn't make a PLT entry for this symbol. This
2516 happens when statically linking PIC code, or when
2517 using -Bsymbolic. */
2518 break;
2519 }
2520
2521 relocation = (htab->splt->output_section->vma
2522 + htab->splt->output_offset
2523 + h->plt.offset);
2524 unresolved_reloc = FALSE;
2525 break;
2526
2527 case R_390_PLTOFF16:
2528 case R_390_PLTOFF32:
2529 /* Relocation is to the entry for this symbol in the
2530 procedure linkage table relative to the start of the GOT. */
2531
2532 /* For local symbols or if we didn't make a PLT entry for
2533 this symbol resolve the symbol directly. */
2534 if ( h == NULL
2535 || h->plt.offset == (bfd_vma) -1
2536 || htab->splt == NULL)
2537 {
2538 relocation -= htab->sgot->output_section->vma;
2539 break;
2540 }
2541
2542 relocation = (htab->splt->output_section->vma
2543 + htab->splt->output_offset
2544 + h->plt.offset
2545 - htab->sgot->output_section->vma);
2546 unresolved_reloc = FALSE;
2547 break;
2548
2549 case R_390_8:
2550 case R_390_16:
2551 case R_390_32:
2552 case R_390_PC16:
2553 case R_390_PC16DBL:
2554 case R_390_PC32DBL:
2555 case R_390_PC32:
2556 if ((input_section->flags & SEC_ALLOC) == 0)
2557 break;
2558
2559 if ((info->shared
2560 && (h == NULL
2561 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2562 || h->root.type != bfd_link_hash_undefweak)
2563 && ((r_type != R_390_PC16
2564 && r_type != R_390_PC16DBL
2565 && r_type != R_390_PC32DBL
2566 && r_type != R_390_PC32)
2567 || (h != NULL
2568 && !SYMBOL_REFERENCES_LOCAL (info, h))))
2569 || (ELIMINATE_COPY_RELOCS
2570 && !info->shared
2571 && h != NULL
2572 && h->dynindx != -1
2573 && !h->non_got_ref
2574 && ((h->def_dynamic
2575 && !h->def_regular)
2576 || h->root.type == bfd_link_hash_undefweak
2577 || h->root.type == bfd_link_hash_undefined)))
2578 {
2579 Elf_Internal_Rela outrel;
2580 bfd_boolean skip, relocate;
2581 asection *sreloc;
2582 bfd_byte *loc;
2583
2584 /* When generating a shared object, these relocations
2585 are copied into the output file to be resolved at run
2586 time. */
2587
2588 skip = FALSE;
2589 relocate = FALSE;
2590
2591 outrel.r_offset =
2592 _bfd_elf_section_offset (output_bfd, info, input_section,
2593 rel->r_offset);
2594 if (outrel.r_offset == (bfd_vma) -1)
2595 skip = TRUE;
2596 else if (outrel.r_offset == (bfd_vma) -2)
2597 skip = TRUE, relocate = TRUE;
2598 outrel.r_offset += (input_section->output_section->vma
2599 + input_section->output_offset);
2600
2601 if (skip)
2602 memset (&outrel, 0, sizeof outrel);
2603 else if (h != NULL
2604 && h->dynindx != -1
2605 && (r_type == R_390_PC16
2606 || r_type == R_390_PC16DBL
2607 || r_type == R_390_PC32DBL
2608 || r_type == R_390_PC32
2609 || !info->shared
2610 || !info->symbolic
2611 || !h->def_regular))
2612 {
2613 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2614 outrel.r_addend = rel->r_addend;
2615 }
2616 else
2617 {
2618 /* This symbol is local, or marked to become local. */
2619 outrel.r_addend = relocation + rel->r_addend;
2620 if (r_type == R_390_32)
2621 {
2622 relocate = TRUE;
2623 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2624 }
2625 else
2626 {
2627 long sindx;
2628
2629 if (bfd_is_abs_section (sec))
2630 sindx = 0;
2631 else if (sec == NULL || sec->owner == NULL)
2632 {
2633 bfd_set_error(bfd_error_bad_value);
2634 return FALSE;
2635 }
2636 else
2637 {
2638 asection *osec;
2639
2640 osec = sec->output_section;
2641 sindx = elf_section_data (osec)->dynindx;
2642 if (sindx == 0)
2643 {
2644 osec = htab->elf.text_index_section;
2645 sindx = elf_section_data (osec)->dynindx;
2646 }
2647 BFD_ASSERT (sindx != 0);
2648
2649 /* We are turning this relocation into one
2650 against a section symbol, so subtract out
2651 the output section's address but not the
2652 offset of the input section in the output
2653 section. */
2654 outrel.r_addend -= osec->vma;
2655 }
2656 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2657 }
2658 }
2659
2660 sreloc = elf_section_data (input_section)->sreloc;
2661 if (sreloc == NULL)
2662 abort ();
2663
2664 loc = sreloc->contents;
2665 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2666 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2667
2668 /* If this reloc is against an external symbol, we do
2669 not want to fiddle with the addend. Otherwise, we
2670 need to include the symbol value so that it becomes
2671 an addend for the dynamic reloc. */
2672 if (! relocate)
2673 continue;
2674 }
2675 break;
2676
2677 /* Relocations for tls literal pool entries. */
2678 case R_390_TLS_IE32:
2679 if (info->shared)
2680 {
2681 Elf_Internal_Rela outrel;
2682 asection *sreloc;
2683 bfd_byte *loc;
2684
2685 outrel.r_offset = rel->r_offset
2686 + input_section->output_section->vma
2687 + input_section->output_offset;
2688 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2689 sreloc = elf_section_data (input_section)->sreloc;
2690 if (sreloc == NULL)
2691 abort ();
2692 loc = sreloc->contents;
2693 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2694 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2695 }
2696 /* Fall through. */
2697
2698 case R_390_TLS_GD32:
2699 case R_390_TLS_GOTIE32:
2700 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2701 tls_type = GOT_UNKNOWN;
2702 if (h == NULL && local_got_offsets)
2703 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2704 else if (h != NULL)
2705 {
2706 tls_type = elf_s390_hash_entry(h)->tls_type;
2707 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2708 r_type = R_390_TLS_LE32;
2709 }
2710 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2711 r_type = R_390_TLS_IE32;
2712
2713 if (r_type == R_390_TLS_LE32)
2714 {
2715 /* This relocation gets optimized away by the local exec
2716 access optimization. */
2717 BFD_ASSERT (! unresolved_reloc);
2718 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2719 contents + rel->r_offset);
2720 continue;
2721 }
2722
2723 if (htab->sgot == NULL)
2724 abort ();
2725
2726 if (h != NULL)
2727 off = h->got.offset;
2728 else
2729 {
2730 if (local_got_offsets == NULL)
2731 abort ();
2732
2733 off = local_got_offsets[r_symndx];
2734 }
2735
2736 emit_tls_relocs:
2737
2738 if ((off & 1) != 0)
2739 off &= ~1;
2740 else
2741 {
2742 Elf_Internal_Rela outrel;
2743 bfd_byte *loc;
2744 int dr_type, indx;
2745
2746 if (htab->srelgot == NULL)
2747 abort ();
2748
2749 outrel.r_offset = (htab->sgot->output_section->vma
2750 + htab->sgot->output_offset + off);
2751
2752 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2753 if (r_type == R_390_TLS_GD32)
2754 dr_type = R_390_TLS_DTPMOD;
2755 else
2756 dr_type = R_390_TLS_TPOFF;
2757 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2758 outrel.r_addend = relocation - dtpoff_base (info);
2759 else
2760 outrel.r_addend = 0;
2761 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2762 loc = htab->srelgot->contents;
2763 loc += htab->srelgot->reloc_count++
2764 * sizeof (Elf32_External_Rela);
2765 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2766
2767 if (r_type == R_390_TLS_GD32)
2768 {
2769 if (indx == 0)
2770 {
2771 BFD_ASSERT (! unresolved_reloc);
2772 bfd_put_32 (output_bfd,
2773 relocation - dtpoff_base (info),
2774 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2775 }
2776 else
2777 {
2778 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2779 outrel.r_offset += GOT_ENTRY_SIZE;
2780 outrel.r_addend = 0;
2781 htab->srelgot->reloc_count++;
2782 loc += sizeof (Elf32_External_Rela);
2783 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2784 }
2785 }
2786
2787 if (h != NULL)
2788 h->got.offset |= 1;
2789 else
2790 local_got_offsets[r_symndx] |= 1;
2791 }
2792
2793 if (off >= (bfd_vma) -2)
2794 abort ();
2795 if (r_type == ELF32_R_TYPE (rel->r_info))
2796 {
2797 relocation = htab->sgot->output_offset + off;
2798 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2799 relocation += htab->sgot->output_section->vma;
2800 unresolved_reloc = FALSE;
2801 }
2802 else
2803 {
2804 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2805 contents + rel->r_offset);
2806 continue;
2807 }
2808 break;
2809
2810 case R_390_TLS_GOTIE12:
2811 case R_390_TLS_GOTIE20:
2812 case R_390_TLS_IEENT:
2813 if (h == NULL)
2814 {
2815 if (local_got_offsets == NULL)
2816 abort();
2817 off = local_got_offsets[r_symndx];
2818 if (info->shared)
2819 goto emit_tls_relocs;
2820 }
2821 else
2822 {
2823 off = h->got.offset;
2824 tls_type = elf_s390_hash_entry(h)->tls_type;
2825 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2826 goto emit_tls_relocs;
2827 }
2828
2829 if (htab->sgot == NULL)
2830 abort ();
2831
2832 BFD_ASSERT (! unresolved_reloc);
2833 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2834 htab->sgot->contents + off);
2835 relocation = htab->sgot->output_offset + off;
2836 if (r_type == R_390_TLS_IEENT)
2837 relocation += htab->sgot->output_section->vma;
2838 unresolved_reloc = FALSE;
2839 break;
2840
2841 case R_390_TLS_LDM32:
2842 if (! info->shared)
2843 /* The literal pool entry this relocation refers to gets ignored
2844 by the optimized code of the local exec model. Do nothing
2845 and the value will turn out zero. */
2846 continue;
2847
2848 if (htab->sgot == NULL)
2849 abort ();
2850
2851 off = htab->tls_ldm_got.offset;
2852 if (off & 1)
2853 off &= ~1;
2854 else
2855 {
2856 Elf_Internal_Rela outrel;
2857 bfd_byte *loc;
2858
2859 if (htab->srelgot == NULL)
2860 abort ();
2861
2862 outrel.r_offset = (htab->sgot->output_section->vma
2863 + htab->sgot->output_offset + off);
2864
2865 bfd_put_32 (output_bfd, 0,
2866 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2867 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2868 outrel.r_addend = 0;
2869 loc = htab->srelgot->contents;
2870 loc += htab->srelgot->reloc_count++
2871 * sizeof (Elf32_External_Rela);
2872 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2873 htab->tls_ldm_got.offset |= 1;
2874 }
2875 relocation = htab->sgot->output_offset + off;
2876 unresolved_reloc = FALSE;
2877 break;
2878
2879 case R_390_TLS_LE32:
2880 if (info->shared)
2881 {
2882 /* Linking a shared library with non-fpic code requires
2883 a R_390_TLS_TPOFF relocation. */
2884 Elf_Internal_Rela outrel;
2885 asection *sreloc;
2886 bfd_byte *loc;
2887 int indx;
2888
2889 outrel.r_offset = rel->r_offset
2890 + input_section->output_section->vma
2891 + input_section->output_offset;
2892 if (h != NULL && h->dynindx != -1)
2893 indx = h->dynindx;
2894 else
2895 indx = 0;
2896 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2897 if (indx == 0)
2898 outrel.r_addend = relocation - dtpoff_base (info);
2899 else
2900 outrel.r_addend = 0;
2901 sreloc = elf_section_data (input_section)->sreloc;
2902 if (sreloc == NULL)
2903 abort ();
2904 loc = sreloc->contents;
2905 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2906 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2907 }
2908 else
2909 {
2910 BFD_ASSERT (! unresolved_reloc);
2911 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2912 contents + rel->r_offset);
2913 }
2914 continue;
2915
2916 case R_390_TLS_LDO32:
2917 if (info->shared)
2918 relocation -= dtpoff_base (info);
2919 else
2920 /* When converting LDO to LE, we must negate. */
2921 relocation = -tpoff (info, relocation);
2922 break;
2923
2924 /* Relocations for tls instructions. */
2925 case R_390_TLS_LOAD:
2926 case R_390_TLS_GDCALL:
2927 case R_390_TLS_LDCALL:
2928 tls_type = GOT_UNKNOWN;
2929 if (h == NULL && local_got_offsets)
2930 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2931 else if (h != NULL)
2932 tls_type = elf_s390_hash_entry(h)->tls_type;
2933
2934 if (tls_type == GOT_TLS_GD)
2935 continue;
2936
2937 if (r_type == R_390_TLS_LOAD)
2938 {
2939 if (!info->shared && (h == NULL || h->dynindx == -1))
2940 {
2941 /* IE->LE transition. Four valid cases:
2942 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2943 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2944 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2945 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2946 unsigned int insn, ry;
2947
2948 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2949 ry = 0;
2950 if ((insn & 0xff00f000) == 0x58000000)
2951 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2952 ry = (insn & 0x000f0000);
2953 else if ((insn & 0xff0f0000) == 0x58000000)
2954 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2955 ry = (insn & 0x0000f000) << 4;
2956 else if ((insn & 0xff00f000) == 0x5800c000)
2957 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2958 ry = (insn & 0x000f0000);
2959 else if ((insn & 0xff0f0000) == 0x580c0000)
2960 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2961 ry = (insn & 0x0000f000) << 4;
2962 else
2963 invalid_tls_insn (input_bfd, input_section, rel);
2964 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2965 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2966 }
2967 }
2968 else if (r_type == R_390_TLS_GDCALL)
2969 {
2970 unsigned int insn;
2971
2972 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2973 if ((insn & 0xff000fff) != 0x4d000000 &&
2974 (insn & 0xffff0000) != 0xc0e50000)
2975 invalid_tls_insn (input_bfd, input_section, rel);
2976 if (!info->shared && (h == NULL || h->dynindx == -1))
2977 {
2978 if ((insn & 0xff000000) == 0x4d000000)
2979 {
2980 /* GD->LE transition.
2981 bas %r14,0(%rx,%r13) -> bc 0,0 */
2982 insn = 0x47000000;
2983 }
2984 else
2985 {
2986 /* GD->LE transition.
2987 brasl %r14,_tls_get_addr@plt -> brcl 0,. */
2988 insn = 0xc0040000;
2989 bfd_put_16 (output_bfd, 0x0000,
2990 contents + rel->r_offset + 4);
2991 }
2992 }
2993 else
2994 {
2995 if ((insn & 0xff000000) == 0x4d000000)
2996 {
2997 /* GD->IE transition.
2998 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2999 insn = 0x5822c000;
3000 }
3001 else
3002 {
3003 /* GD->IE transition.
3004 brasl %r14,__tls_get_addr@plt ->
3005 l %r2,0(%r2,%r12) ; bcr 0,0 */
3006 insn = 0x5822c000;
3007 bfd_put_16 (output_bfd, 0x0700,
3008 contents + rel->r_offset + 4);
3009 }
3010 }
3011 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3012 }
3013 else if (r_type == R_390_TLS_LDCALL)
3014 {
3015 if (!info->shared)
3016 {
3017 unsigned int insn;
3018
3019 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3020 if ((insn & 0xff000fff) != 0x4d000000 &&
3021 (insn & 0xffff0000) != 0xc0e50000)
3022 invalid_tls_insn (input_bfd, input_section, rel);
3023 if ((insn & 0xff000000) == 0x4d000000)
3024 {
3025 /* LD->LE transition.
3026 bas %r14,0(%rx,%r13) -> bc 0,0 */
3027 insn = 0x47000000;
3028 }
3029 else
3030 {
3031 /* LD->LE transition.
3032 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3033 insn = 0xc0040000;
3034 bfd_put_16 (output_bfd, 0x0000,
3035 contents + rel->r_offset + 4);
3036 }
3037 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3038 }
3039 }
3040 continue;
3041
3042 default:
3043 break;
3044 }
3045
3046 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3047 because such sections are not SEC_ALLOC and thus ld.so will
3048 not process them. */
3049 if (unresolved_reloc
3050 && !((input_section->flags & SEC_DEBUGGING) != 0
3051 && h->def_dynamic))
3052 (*_bfd_error_handler)
3053 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3054 input_bfd,
3055 input_section,
3056 (long) rel->r_offset,
3057 howto->name,
3058 h->root.root.string);
3059
3060 if (r_type == R_390_20
3061 || r_type == R_390_GOT20
3062 || r_type == R_390_GOTPLT20
3063 || r_type == R_390_TLS_GOTIE20)
3064 {
3065 relocation += rel->r_addend;
3066 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3067 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3068 contents, rel->r_offset,
3069 relocation, 0);
3070 }
3071 else
3072 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3073 contents, rel->r_offset,
3074 relocation, rel->r_addend);
3075
3076 if (r != bfd_reloc_ok)
3077 {
3078 const char *name;
3079
3080 if (h != NULL)
3081 name = h->root.root.string;
3082 else
3083 {
3084 name = bfd_elf_string_from_elf_section (input_bfd,
3085 symtab_hdr->sh_link,
3086 sym->st_name);
3087 if (name == NULL)
3088 return FALSE;
3089 if (*name == '\0')
3090 name = bfd_section_name (input_bfd, sec);
3091 }
3092
3093 if (r == bfd_reloc_overflow)
3094 {
3095
3096 if (! ((*info->callbacks->reloc_overflow)
3097 (info, (h ? &h->root : NULL), name, howto->name,
3098 (bfd_vma) 0, input_bfd, input_section,
3099 rel->r_offset)))
3100 return FALSE;
3101 }
3102 else
3103 {
3104 (*_bfd_error_handler)
3105 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3106 input_bfd, input_section,
3107 (long) rel->r_offset, name, (int) r);
3108 return FALSE;
3109 }
3110 }
3111 }
3112
3113 return TRUE;
3114 }
3115
3116 /* Finish up dynamic symbol handling. We set the contents of various
3117 dynamic sections here. */
3118
3119 static bfd_boolean
3120 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3121 bfd *output_bfd;
3122 struct bfd_link_info *info;
3123 struct elf_link_hash_entry *h;
3124 Elf_Internal_Sym *sym;
3125 {
3126 struct elf_s390_link_hash_table *htab;
3127
3128 htab = elf_s390_hash_table (info);
3129
3130 if (h->plt.offset != (bfd_vma) -1)
3131 {
3132 bfd_vma plt_index;
3133 bfd_vma got_offset;
3134 Elf_Internal_Rela rela;
3135 bfd_byte *loc;
3136 bfd_vma relative_offset;
3137
3138 /* This symbol has an entry in the procedure linkage table. Set
3139 it up. */
3140 if (h->dynindx == -1
3141 || htab->splt == NULL
3142 || htab->sgotplt == NULL
3143 || htab->srelplt == NULL)
3144 abort ();
3145
3146 /* Calc. index no.
3147 Current offset - size first entry / entry size. */
3148 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3149
3150 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3151 addr & GOT addr. */
3152 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3153
3154 /* S390 uses halfwords for relative branch calc! */
3155 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3156 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3157 /* If offset is > 32768, branch to a previous branch
3158 390 can only handle +-64 K jumps. */
3159 if ( -32768 > (int) relative_offset )
3160 relative_offset
3161 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3162
3163 /* Fill in the entry in the procedure linkage table. */
3164 if (!info->shared)
3165 {
3166 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3167 htab->splt->contents + h->plt.offset);
3168 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3169 htab->splt->contents + h->plt.offset + 4);
3170 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3171 htab->splt->contents + h->plt.offset + 8);
3172 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3173 htab->splt->contents + h->plt.offset + 12);
3174 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3175 htab->splt->contents + h->plt.offset + 16);
3176 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3177 htab->splt->contents + h->plt.offset + 20);
3178 bfd_put_32 (output_bfd,
3179 (htab->sgotplt->output_section->vma
3180 + htab->sgotplt->output_offset
3181 + got_offset),
3182 htab->splt->contents + h->plt.offset + 24);
3183 }
3184 else if (got_offset < 4096)
3185 {
3186 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3187 htab->splt->contents + h->plt.offset);
3188 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3189 htab->splt->contents + h->plt.offset + 4);
3190 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3191 htab->splt->contents + h->plt.offset + 8);
3192 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3193 htab->splt->contents + h->plt.offset + 12);
3194 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3195 htab->splt->contents + h->plt.offset + 16);
3196 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3197 htab->splt->contents + h->plt.offset + 20);
3198 bfd_put_32 (output_bfd, (bfd_vma) 0,
3199 htab->splt->contents + h->plt.offset + 24);
3200 }
3201 else if (got_offset < 32768)
3202 {
3203 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3204 htab->splt->contents + h->plt.offset);
3205 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3206 htab->splt->contents + h->plt.offset + 4);
3207 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3208 htab->splt->contents + h->plt.offset + 8);
3209 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3210 htab->splt->contents + h->plt.offset + 12);
3211 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3212 htab->splt->contents + h->plt.offset + 16);
3213 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3214 htab->splt->contents + h->plt.offset + 20);
3215 bfd_put_32 (output_bfd, (bfd_vma) 0,
3216 htab->splt->contents + h->plt.offset + 24);
3217 }
3218 else
3219 {
3220 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3221 htab->splt->contents + h->plt.offset);
3222 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3223 htab->splt->contents + h->plt.offset + 4);
3224 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3225 htab->splt->contents + h->plt.offset + 8);
3226 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3227 htab->splt->contents + h->plt.offset + 12);
3228 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3229 htab->splt->contents + h->plt.offset + 16);
3230 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3231 htab->splt->contents + h->plt.offset + 20);
3232 bfd_put_32 (output_bfd, got_offset,
3233 htab->splt->contents + h->plt.offset + 24);
3234 }
3235 /* Insert offset into reloc. table here. */
3236 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3237 htab->splt->contents + h->plt.offset + 28);
3238
3239 /* Fill in the entry in the global offset table.
3240 Points to instruction after GOT offset. */
3241 bfd_put_32 (output_bfd,
3242 (htab->splt->output_section->vma
3243 + htab->splt->output_offset
3244 + h->plt.offset
3245 + 12),
3246 htab->sgotplt->contents + got_offset);
3247
3248 /* Fill in the entry in the .rela.plt section. */
3249 rela.r_offset = (htab->sgotplt->output_section->vma
3250 + htab->sgotplt->output_offset
3251 + got_offset);
3252 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3253 rela.r_addend = 0;
3254 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3255 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3256
3257 if (!h->def_regular)
3258 {
3259 /* Mark the symbol as undefined, rather than as defined in
3260 the .plt section. Leave the value alone. This is a clue
3261 for the dynamic linker, to make function pointer
3262 comparisons work between an application and shared
3263 library. */
3264 sym->st_shndx = SHN_UNDEF;
3265 }
3266 }
3267
3268 if (h->got.offset != (bfd_vma) -1
3269 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3270 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3271 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3272 {
3273 Elf_Internal_Rela rela;
3274 bfd_byte *loc;
3275
3276 /* This symbol has an entry in the global offset table. Set it
3277 up. */
3278
3279 if (htab->sgot == NULL || htab->srelgot == NULL)
3280 abort ();
3281
3282 rela.r_offset = (htab->sgot->output_section->vma
3283 + htab->sgot->output_offset
3284 + (h->got.offset &~ (bfd_vma) 1));
3285
3286 /* If this is a static link, or it is a -Bsymbolic link and the
3287 symbol is defined locally or was forced to be local because
3288 of a version file, we just want to emit a RELATIVE reloc.
3289 The entry in the global offset table will already have been
3290 initialized in the relocate_section function. */
3291 if (info->shared
3292 && (info->symbolic
3293 || h->dynindx == -1
3294 || h->forced_local)
3295 && h->def_regular)
3296 {
3297 BFD_ASSERT((h->got.offset & 1) != 0);
3298 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3299 rela.r_addend = (h->root.u.def.value
3300 + h->root.u.def.section->output_section->vma
3301 + h->root.u.def.section->output_offset);
3302 }
3303 else
3304 {
3305 BFD_ASSERT((h->got.offset & 1) == 0);
3306 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3307 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3308 rela.r_addend = 0;
3309 }
3310
3311 loc = htab->srelgot->contents;
3312 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3313 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3314 }
3315
3316 if (h->needs_copy)
3317 {
3318 Elf_Internal_Rela rela;
3319 bfd_byte *loc;
3320
3321 /* This symbols needs a copy reloc. Set it up. */
3322
3323 if (h->dynindx == -1
3324 || (h->root.type != bfd_link_hash_defined
3325 && h->root.type != bfd_link_hash_defweak)
3326 || htab->srelbss == NULL)
3327 abort ();
3328
3329 rela.r_offset = (h->root.u.def.value
3330 + h->root.u.def.section->output_section->vma
3331 + h->root.u.def.section->output_offset);
3332 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3333 rela.r_addend = 0;
3334 loc = htab->srelbss->contents;
3335 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3336 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3337 }
3338
3339 /* Mark some specially defined symbols as absolute. */
3340 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3341 || h == htab->elf.hgot
3342 || h == htab->elf.hplt)
3343 sym->st_shndx = SHN_ABS;
3344
3345 return TRUE;
3346 }
3347
3348 /* Used to decide how to sort relocs in an optimal manner for the
3349 dynamic linker, before writing them out. */
3350
3351 static enum elf_reloc_type_class
3352 elf_s390_reloc_type_class (rela)
3353 const Elf_Internal_Rela *rela;
3354 {
3355 switch ((int) ELF32_R_TYPE (rela->r_info))
3356 {
3357 case R_390_RELATIVE:
3358 return reloc_class_relative;
3359 case R_390_JMP_SLOT:
3360 return reloc_class_plt;
3361 case R_390_COPY:
3362 return reloc_class_copy;
3363 default:
3364 return reloc_class_normal;
3365 }
3366 }
3367
3368 /* Finish up the dynamic sections. */
3369
3370 static bfd_boolean
3371 elf_s390_finish_dynamic_sections (output_bfd, info)
3372 bfd *output_bfd;
3373 struct bfd_link_info *info;
3374 {
3375 struct elf_s390_link_hash_table *htab;
3376 bfd *dynobj;
3377 asection *sdyn;
3378
3379 htab = elf_s390_hash_table (info);
3380 dynobj = htab->elf.dynobj;
3381 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3382
3383 if (htab->elf.dynamic_sections_created)
3384 {
3385 Elf32_External_Dyn *dyncon, *dynconend;
3386
3387 if (sdyn == NULL || htab->sgot == NULL)
3388 abort ();
3389
3390 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3391 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3392 for (; dyncon < dynconend; dyncon++)
3393 {
3394 Elf_Internal_Dyn dyn;
3395 asection *s;
3396
3397 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3398
3399 switch (dyn.d_tag)
3400 {
3401 default:
3402 continue;
3403
3404 case DT_PLTGOT:
3405 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3406 break;
3407
3408 case DT_JMPREL:
3409 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3410 break;
3411
3412 case DT_PLTRELSZ:
3413 s = htab->srelplt->output_section;
3414 dyn.d_un.d_val = s->size;
3415 break;
3416 }
3417
3418 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3419 }
3420
3421 /* Fill in the special first entry in the procedure linkage table. */
3422 if (htab->splt && htab->splt->size > 0)
3423 {
3424 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3425 if (info->shared)
3426 {
3427 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3428 htab->splt->contents );
3429 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3430 htab->splt->contents +4 );
3431 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3432 htab->splt->contents +8 );
3433 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3434 htab->splt->contents +12 );
3435 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3436 htab->splt->contents +16 );
3437 }
3438 else
3439 {
3440 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3441 htab->splt->contents );
3442 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3443 htab->splt->contents +4 );
3444 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3445 htab->splt->contents +8 );
3446 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3447 htab->splt->contents +12 );
3448 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3449 htab->splt->contents +16 );
3450 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3451 htab->splt->contents +20 );
3452 bfd_put_32 (output_bfd,
3453 htab->sgotplt->output_section->vma
3454 + htab->sgotplt->output_offset,
3455 htab->splt->contents + 24);
3456 }
3457 elf_section_data (htab->splt->output_section)
3458 ->this_hdr.sh_entsize = 4;
3459 }
3460
3461 }
3462
3463 if (htab->sgotplt)
3464 {
3465 /* Fill in the first three entries in the global offset table. */
3466 if (htab->sgotplt->size > 0)
3467 {
3468 bfd_put_32 (output_bfd,
3469 (sdyn == NULL ? (bfd_vma) 0
3470 : sdyn->output_section->vma + sdyn->output_offset),
3471 htab->sgotplt->contents);
3472 /* One entry for shared object struct ptr. */
3473 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3474 /* One entry for _dl_runtime_resolve. */
3475 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3476 }
3477
3478 elf_section_data (htab->sgotplt->output_section)
3479 ->this_hdr.sh_entsize = 4;
3480 }
3481 return TRUE;
3482 }
3483
3484 static bfd_boolean
3485 elf_s390_grok_prstatus (abfd, note)
3486 bfd * abfd;
3487 Elf_Internal_Note * note;
3488 {
3489 int offset;
3490 unsigned int size;
3491
3492 switch (note->descsz)
3493 {
3494 default:
3495 return FALSE;
3496
3497 case 224: /* S/390 Linux. */
3498 /* pr_cursig */
3499 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3500
3501 /* pr_pid */
3502 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3503
3504 /* pr_reg */
3505 offset = 72;
3506 size = 144;
3507 break;
3508 }
3509
3510 /* Make a ".reg/999" section. */
3511 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3512 size, note->descpos + offset);
3513 }
3514
3515 /* Return address for Ith PLT stub in section PLT, for relocation REL
3516 or (bfd_vma) -1 if it should not be included. */
3517
3518 static bfd_vma
3519 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3520 const arelent *rel ATTRIBUTE_UNUSED)
3521 {
3522 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3523 }
3524
3525
3526 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3527 #define TARGET_BIG_NAME "elf32-s390"
3528 #define ELF_ARCH bfd_arch_s390
3529 #define ELF_MACHINE_CODE EM_S390
3530 #define ELF_MACHINE_ALT1 EM_S390_OLD
3531 #define ELF_MAXPAGESIZE 0x1000
3532
3533 #define elf_backend_can_gc_sections 1
3534 #define elf_backend_can_refcount 1
3535 #define elf_backend_want_got_plt 1
3536 #define elf_backend_plt_readonly 1
3537 #define elf_backend_want_plt_sym 0
3538 #define elf_backend_got_header_size 12
3539 #define elf_backend_rela_normal 1
3540
3541 #define elf_info_to_howto elf_s390_info_to_howto
3542
3543 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3544 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3545 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3546 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3547
3548 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3549 #define elf_backend_check_relocs elf_s390_check_relocs
3550 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3551 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3552 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3553 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3554 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3555 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3556 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3557 #define elf_backend_relocate_section elf_s390_relocate_section
3558 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3559 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3560 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3561 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3562 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3563
3564 #define bfd_elf32_mkobject elf_s390_mkobject
3565 #define elf_backend_object_p elf_s390_object_p
3566
3567 #include "elf32-target.h"
GDB Binutils - Deliverables
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