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* elf-m10300.c (_bfd_mn10300_elf_adjust_dynamic_symbol): Don't error
[thirdparty/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, 2008, 2009,
3 2011, 2012 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 /* NOTE: Keep this structure in sync with
678 the one declared in elf64-s390.c. */
679 struct elf_s390_obj_tdata
680 {
681 struct elf_obj_tdata root;
682
683 /* TLS type for each local got entry. */
684 char *local_got_tls_type;
685 };
686
687 #define elf_s390_tdata(abfd) \
688 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
689
690 #define elf_s390_local_got_tls_type(abfd) \
691 (elf_s390_tdata (abfd)->local_got_tls_type)
692
693 #define is_s390_elf(bfd) \
694 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
695 && elf_tdata (bfd) != NULL \
696 && elf_object_id (bfd) == S390_ELF_DATA)
697
698 static bfd_boolean
699 elf_s390_mkobject (bfd *abfd)
700 {
701 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
702 S390_ELF_DATA);
703 }
704
705 static bfd_boolean
706 elf_s390_object_p (abfd)
707 bfd *abfd;
708 {
709 /* Set the right machine number for an s390 elf32 file. */
710 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
711 }
712
713 /* s390 ELF linker hash table. */
714
715 struct elf_s390_link_hash_table
716 {
717 struct elf_link_hash_table elf;
718
719 /* Short-cuts to get to dynamic linker sections. */
720 asection *sgot;
721 asection *sgotplt;
722 asection *srelgot;
723 asection *splt;
724 asection *srelplt;
725 asection *sdynbss;
726 asection *srelbss;
727
728 union {
729 bfd_signed_vma refcount;
730 bfd_vma offset;
731 } tls_ldm_got;
732
733 /* Small local sym cache. */
734 struct sym_cache sym_cache;
735 };
736
737 /* Get the s390 ELF linker hash table from a link_info structure. */
738
739 #define elf_s390_hash_table(p) \
740 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
741 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
742
743 /* Create an entry in an s390 ELF linker hash table. */
744
745 static struct bfd_hash_entry *
746 link_hash_newfunc (entry, table, string)
747 struct bfd_hash_entry *entry;
748 struct bfd_hash_table *table;
749 const char *string;
750 {
751 /* Allocate the structure if it has not already been allocated by a
752 subclass. */
753 if (entry == NULL)
754 {
755 entry = bfd_hash_allocate (table,
756 sizeof (struct elf_s390_link_hash_entry));
757 if (entry == NULL)
758 return entry;
759 }
760
761 /* Call the allocation method of the superclass. */
762 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
763 if (entry != NULL)
764 {
765 struct elf_s390_link_hash_entry *eh;
766
767 eh = (struct elf_s390_link_hash_entry *) entry;
768 eh->dyn_relocs = NULL;
769 eh->gotplt_refcount = 0;
770 eh->tls_type = GOT_UNKNOWN;
771 }
772
773 return entry;
774 }
775
776 /* Create an s390 ELF linker hash table. */
777
778 static struct bfd_link_hash_table *
779 elf_s390_link_hash_table_create (abfd)
780 bfd *abfd;
781 {
782 struct elf_s390_link_hash_table *ret;
783 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
784
785 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
786 if (ret == NULL)
787 return NULL;
788
789 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
790 sizeof (struct elf_s390_link_hash_entry),
791 S390_ELF_DATA))
792 {
793 free (ret);
794 return NULL;
795 }
796
797 ret->sgot = NULL;
798 ret->sgotplt = NULL;
799 ret->srelgot = NULL;
800 ret->splt = NULL;
801 ret->srelplt = NULL;
802 ret->sdynbss = NULL;
803 ret->srelbss = NULL;
804 ret->tls_ldm_got.refcount = 0;
805 ret->sym_cache.abfd = NULL;
806
807 return &ret->elf.root;
808 }
809
810 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
811 shortcuts to them in our hash table. */
812
813 static bfd_boolean
814 create_got_section (dynobj, info)
815 bfd *dynobj;
816 struct bfd_link_info *info;
817 {
818 struct elf_s390_link_hash_table *htab;
819
820 if (! _bfd_elf_create_got_section (dynobj, info))
821 return FALSE;
822
823 htab = elf_s390_hash_table (info);
824 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
825 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
826 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
827 if (!htab->sgot || !htab->sgotplt || !htab->srelgot)
828 abort ();
829
830 return TRUE;
831 }
832
833 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
834 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
835 hash table. */
836
837 static bfd_boolean
838 elf_s390_create_dynamic_sections (dynobj, info)
839 bfd *dynobj;
840 struct bfd_link_info *info;
841 {
842 struct elf_s390_link_hash_table *htab;
843
844 htab = elf_s390_hash_table (info);
845 if (!htab->sgot && !create_got_section (dynobj, info))
846 return FALSE;
847
848 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
849 return FALSE;
850
851 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
852 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
853 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
854 if (!info->shared)
855 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
856
857 if (!htab->splt || !htab->srelplt || !htab->sdynbss
858 || (!info->shared && !htab->srelbss))
859 abort ();
860
861 return TRUE;
862 }
863
864 /* Copy the extra info we tack onto an elf_link_hash_entry. */
865
866 static void
867 elf_s390_copy_indirect_symbol (info, dir, ind)
868 struct bfd_link_info *info;
869 struct elf_link_hash_entry *dir, *ind;
870 {
871 struct elf_s390_link_hash_entry *edir, *eind;
872
873 edir = (struct elf_s390_link_hash_entry *) dir;
874 eind = (struct elf_s390_link_hash_entry *) ind;
875
876 if (eind->dyn_relocs != NULL)
877 {
878 if (edir->dyn_relocs != NULL)
879 {
880 struct elf_s390_dyn_relocs **pp;
881 struct elf_s390_dyn_relocs *p;
882
883 /* Add reloc counts against the indirect sym to the direct sym
884 list. Merge any entries against the same section. */
885 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
886 {
887 struct elf_s390_dyn_relocs *q;
888
889 for (q = edir->dyn_relocs; q != NULL; q = q->next)
890 if (q->sec == p->sec)
891 {
892 q->pc_count += p->pc_count;
893 q->count += p->count;
894 *pp = p->next;
895 break;
896 }
897 if (q == NULL)
898 pp = &p->next;
899 }
900 *pp = edir->dyn_relocs;
901 }
902
903 edir->dyn_relocs = eind->dyn_relocs;
904 eind->dyn_relocs = NULL;
905 }
906
907 if (ind->root.type == bfd_link_hash_indirect
908 && dir->got.refcount <= 0)
909 {
910 edir->tls_type = eind->tls_type;
911 eind->tls_type = GOT_UNKNOWN;
912 }
913
914 if (ELIMINATE_COPY_RELOCS
915 && ind->root.type != bfd_link_hash_indirect
916 && dir->dynamic_adjusted)
917 {
918 /* If called to transfer flags for a weakdef during processing
919 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
920 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
921 dir->ref_dynamic |= ind->ref_dynamic;
922 dir->ref_regular |= ind->ref_regular;
923 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
924 dir->needs_plt |= ind->needs_plt;
925 }
926 else
927 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
928 }
929
930 static int
931 elf_s390_tls_transition (info, r_type, is_local)
932 struct bfd_link_info *info;
933 int r_type;
934 int is_local;
935 {
936 if (info->shared)
937 return r_type;
938
939 switch (r_type)
940 {
941 case R_390_TLS_GD32:
942 case R_390_TLS_IE32:
943 if (is_local)
944 return R_390_TLS_LE32;
945 return R_390_TLS_IE32;
946 case R_390_TLS_GOTIE32:
947 if (is_local)
948 return R_390_TLS_LE32;
949 return R_390_TLS_GOTIE32;
950 case R_390_TLS_LDM32:
951 return R_390_TLS_LE32;
952 }
953
954 return r_type;
955 }
956
957 /* Look through the relocs for a section during the first phase, and
958 allocate space in the global offset table or procedure linkage
959 table. */
960
961 static bfd_boolean
962 elf_s390_check_relocs (abfd, info, sec, relocs)
963 bfd *abfd;
964 struct bfd_link_info *info;
965 asection *sec;
966 const Elf_Internal_Rela *relocs;
967 {
968 struct elf_s390_link_hash_table *htab;
969 Elf_Internal_Shdr *symtab_hdr;
970 struct elf_link_hash_entry **sym_hashes;
971 const Elf_Internal_Rela *rel;
972 const Elf_Internal_Rela *rel_end;
973 asection *sreloc;
974 bfd_signed_vma *local_got_refcounts;
975 int tls_type, old_tls_type;
976
977 if (info->relocatable)
978 return TRUE;
979
980 BFD_ASSERT (is_s390_elf (abfd));
981
982 htab = elf_s390_hash_table (info);
983 symtab_hdr = &elf_symtab_hdr (abfd);
984 sym_hashes = elf_sym_hashes (abfd);
985 local_got_refcounts = elf_local_got_refcounts (abfd);
986
987 sreloc = NULL;
988
989 rel_end = relocs + sec->reloc_count;
990 for (rel = relocs; rel < rel_end; rel++)
991 {
992 unsigned int r_type;
993 unsigned long r_symndx;
994 struct elf_link_hash_entry *h;
995
996 r_symndx = ELF32_R_SYM (rel->r_info);
997
998 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
999 {
1000 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1001 abfd, r_symndx);
1002 return FALSE;
1003 }
1004
1005 if (r_symndx < symtab_hdr->sh_info)
1006 h = NULL;
1007 else
1008 {
1009 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1010 while (h->root.type == bfd_link_hash_indirect
1011 || h->root.type == bfd_link_hash_warning)
1012 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1013 }
1014
1015 /* Create got section and local_got_refcounts array if they
1016 are needed. */
1017 r_type = elf_s390_tls_transition (info,
1018 ELF32_R_TYPE (rel->r_info),
1019 h == NULL);
1020 switch (r_type)
1021 {
1022 case R_390_GOT12:
1023 case R_390_GOT16:
1024 case R_390_GOT20:
1025 case R_390_GOT32:
1026 case R_390_GOTENT:
1027 case R_390_GOTPLT12:
1028 case R_390_GOTPLT16:
1029 case R_390_GOTPLT20:
1030 case R_390_GOTPLT32:
1031 case R_390_GOTPLTENT:
1032 case R_390_TLS_GD32:
1033 case R_390_TLS_GOTIE12:
1034 case R_390_TLS_GOTIE20:
1035 case R_390_TLS_GOTIE32:
1036 case R_390_TLS_IEENT:
1037 case R_390_TLS_IE32:
1038 case R_390_TLS_LDM32:
1039 if (h == NULL
1040 && local_got_refcounts == NULL)
1041 {
1042 bfd_size_type size;
1043
1044 size = symtab_hdr->sh_info;
1045 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1046 local_got_refcounts = ((bfd_signed_vma *)
1047 bfd_zalloc (abfd, size));
1048 if (local_got_refcounts == NULL)
1049 return FALSE;
1050 elf_local_got_refcounts (abfd) = local_got_refcounts;
1051 elf_s390_local_got_tls_type (abfd)
1052 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1053 }
1054 /* Fall through. */
1055 case R_390_GOTOFF16:
1056 case R_390_GOTOFF32:
1057 case R_390_GOTPC:
1058 case R_390_GOTPCDBL:
1059 if (htab->sgot == NULL)
1060 {
1061 if (htab->elf.dynobj == NULL)
1062 htab->elf.dynobj = abfd;
1063 if (!create_got_section (htab->elf.dynobj, info))
1064 return FALSE;
1065 }
1066 }
1067
1068 switch (r_type)
1069 {
1070 case R_390_GOTOFF16:
1071 case R_390_GOTOFF32:
1072 case R_390_GOTPC:
1073 case R_390_GOTPCDBL:
1074 /* Got is created, nothing to be done. */
1075 break;
1076
1077 case R_390_PLT16DBL:
1078 case R_390_PLT32DBL:
1079 case R_390_PLT32:
1080 case R_390_PLTOFF16:
1081 case R_390_PLTOFF32:
1082 /* This symbol requires a procedure linkage table entry. We
1083 actually build the entry in adjust_dynamic_symbol,
1084 because this might be a case of linking PIC code which is
1085 never referenced by a dynamic object, in which case we
1086 don't need to generate a procedure linkage table entry
1087 after all. */
1088
1089 /* If this is a local symbol, we resolve it directly without
1090 creating a procedure linkage table entry. */
1091 if (h != NULL)
1092 {
1093 h->needs_plt = 1;
1094 h->plt.refcount += 1;
1095 }
1096 break;
1097
1098 case R_390_GOTPLT12:
1099 case R_390_GOTPLT16:
1100 case R_390_GOTPLT20:
1101 case R_390_GOTPLT32:
1102 case R_390_GOTPLTENT:
1103 /* This symbol requires either a procedure linkage table entry
1104 or an entry in the local got. We actually build the entry
1105 in adjust_dynamic_symbol because whether this is really a
1106 global reference can change and with it the fact if we have
1107 to create a plt entry or a local got entry. To be able to
1108 make a once global symbol a local one we have to keep track
1109 of the number of gotplt references that exist for this
1110 symbol. */
1111 if (h != NULL)
1112 {
1113 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1114 h->needs_plt = 1;
1115 h->plt.refcount += 1;
1116 }
1117 else
1118 local_got_refcounts[r_symndx] += 1;
1119 break;
1120
1121 case R_390_TLS_LDM32:
1122 htab->tls_ldm_got.refcount += 1;
1123 break;
1124
1125 case R_390_TLS_IE32:
1126 case R_390_TLS_GOTIE12:
1127 case R_390_TLS_GOTIE20:
1128 case R_390_TLS_GOTIE32:
1129 case R_390_TLS_IEENT:
1130 if (info->shared)
1131 info->flags |= DF_STATIC_TLS;
1132 /* Fall through. */
1133
1134 case R_390_GOT12:
1135 case R_390_GOT16:
1136 case R_390_GOT20:
1137 case R_390_GOT32:
1138 case R_390_GOTENT:
1139 case R_390_TLS_GD32:
1140 /* This symbol requires a global offset table entry. */
1141 switch (r_type)
1142 {
1143 default:
1144 case R_390_GOT12:
1145 case R_390_GOT16:
1146 case R_390_GOT20:
1147 case R_390_GOT32:
1148 case R_390_GOTENT:
1149 tls_type = GOT_NORMAL;
1150 break;
1151 case R_390_TLS_GD32:
1152 tls_type = GOT_TLS_GD;
1153 break;
1154 case R_390_TLS_IE32:
1155 case R_390_TLS_GOTIE32:
1156 tls_type = GOT_TLS_IE;
1157 break;
1158 case R_390_TLS_GOTIE12:
1159 case R_390_TLS_GOTIE20:
1160 case R_390_TLS_IEENT:
1161 tls_type = GOT_TLS_IE_NLT;
1162 break;
1163 }
1164
1165 if (h != NULL)
1166 {
1167 h->got.refcount += 1;
1168 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1169 }
1170 else
1171 {
1172 local_got_refcounts[r_symndx] += 1;
1173 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1174 }
1175 /* If a TLS symbol is accessed using IE at least once,
1176 there is no point to use dynamic model for it. */
1177 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1178 {
1179 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1180 {
1181 (*_bfd_error_handler)
1182 (_("%B: `%s' accessed both as normal and thread local symbol"),
1183 abfd, h->root.root.string);
1184 return FALSE;
1185 }
1186 if (old_tls_type > tls_type)
1187 tls_type = old_tls_type;
1188 }
1189
1190 if (old_tls_type != tls_type)
1191 {
1192 if (h != NULL)
1193 elf_s390_hash_entry (h)->tls_type = tls_type;
1194 else
1195 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1196 }
1197
1198 if (r_type != R_390_TLS_IE32)
1199 break;
1200 /* Fall through. */
1201
1202 case R_390_TLS_LE32:
1203 if (!info->shared)
1204 break;
1205 info->flags |= DF_STATIC_TLS;
1206 /* Fall through. */
1207
1208 case R_390_8:
1209 case R_390_16:
1210 case R_390_32:
1211 case R_390_PC16:
1212 case R_390_PC16DBL:
1213 case R_390_PC32DBL:
1214 case R_390_PC32:
1215 if (h != NULL && !info->shared)
1216 {
1217 /* If this reloc is in a read-only section, we might
1218 need a copy reloc. We can't check reliably at this
1219 stage whether the section is read-only, as input
1220 sections have not yet been mapped to output sections.
1221 Tentatively set the flag for now, and correct in
1222 adjust_dynamic_symbol. */
1223 h->non_got_ref = 1;
1224
1225 /* We may need a .plt entry if the function this reloc
1226 refers to is in a shared lib. */
1227 h->plt.refcount += 1;
1228 }
1229
1230 /* If we are creating a shared library, and this is a reloc
1231 against a global symbol, or a non PC relative reloc
1232 against a local symbol, then we need to copy the reloc
1233 into the shared library. However, if we are linking with
1234 -Bsymbolic, we do not need to copy a reloc against a
1235 global symbol which is defined in an object we are
1236 including in the link (i.e., DEF_REGULAR is set). At
1237 this point we have not seen all the input files, so it is
1238 possible that DEF_REGULAR is not set now but will be set
1239 later (it is never cleared). In case of a weak definition,
1240 DEF_REGULAR may be cleared later by a strong definition in
1241 a shared library. We account for that possibility below by
1242 storing information in the relocs_copied field of the hash
1243 table entry. A similar situation occurs when creating
1244 shared libraries and symbol visibility changes render the
1245 symbol local.
1246
1247 If on the other hand, we are creating an executable, we
1248 may need to keep relocations for symbols satisfied by a
1249 dynamic library if we manage to avoid copy relocs for the
1250 symbol. */
1251 if ((info->shared
1252 && (sec->flags & SEC_ALLOC) != 0
1253 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1254 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1255 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1256 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1257 || (h != NULL
1258 && (! SYMBOLIC_BIND (info, h)
1259 || h->root.type == bfd_link_hash_defweak
1260 || !h->def_regular))))
1261 || (ELIMINATE_COPY_RELOCS
1262 && !info->shared
1263 && (sec->flags & SEC_ALLOC) != 0
1264 && h != NULL
1265 && (h->root.type == bfd_link_hash_defweak
1266 || !h->def_regular)))
1267 {
1268 struct elf_s390_dyn_relocs *p;
1269 struct elf_s390_dyn_relocs **head;
1270
1271 /* We must copy these reloc types into the output file.
1272 Create a reloc section in dynobj and make room for
1273 this reloc. */
1274 if (sreloc == NULL)
1275 {
1276 if (htab->elf.dynobj == NULL)
1277 htab->elf.dynobj = abfd;
1278
1279 sreloc = _bfd_elf_make_dynamic_reloc_section
1280 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1281
1282 if (sreloc == NULL)
1283 return FALSE;
1284 }
1285
1286 /* If this is a global symbol, we count the number of
1287 relocations we need for this symbol. */
1288 if (h != NULL)
1289 {
1290 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1291 }
1292 else
1293 {
1294 /* Track dynamic relocs needed for local syms too.
1295 We really need local syms available to do this
1296 easily. Oh well. */
1297 asection *s;
1298 void *vpp;
1299 Elf_Internal_Sym *isym;
1300
1301 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1302 abfd, r_symndx);
1303 if (isym == NULL)
1304 return FALSE;
1305
1306 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1307 if (s == NULL)
1308 s = sec;
1309
1310 vpp = &elf_section_data (s)->local_dynrel;
1311 head = (struct elf_s390_dyn_relocs **) vpp;
1312 }
1313
1314 p = *head;
1315 if (p == NULL || p->sec != sec)
1316 {
1317 bfd_size_type amt = sizeof *p;
1318
1319 p = ((struct elf_s390_dyn_relocs *)
1320 bfd_alloc (htab->elf.dynobj, amt));
1321 if (p == NULL)
1322 return FALSE;
1323 p->next = *head;
1324 *head = p;
1325 p->sec = sec;
1326 p->count = 0;
1327 p->pc_count = 0;
1328 }
1329
1330 p->count += 1;
1331 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1332 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1333 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1334 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1335 p->pc_count += 1;
1336 }
1337 break;
1338
1339 /* This relocation describes the C++ object vtable hierarchy.
1340 Reconstruct it for later use during GC. */
1341 case R_390_GNU_VTINHERIT:
1342 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1343 return FALSE;
1344 break;
1345
1346 /* This relocation describes which C++ vtable entries are actually
1347 used. Record for later use during GC. */
1348 case R_390_GNU_VTENTRY:
1349 BFD_ASSERT (h != NULL);
1350 if (h != NULL
1351 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1352 return FALSE;
1353 break;
1354
1355 default:
1356 break;
1357 }
1358 }
1359
1360 return TRUE;
1361 }
1362
1363 /* Return the section that should be marked against GC for a given
1364 relocation. */
1365
1366 static asection *
1367 elf_s390_gc_mark_hook (asection *sec,
1368 struct bfd_link_info *info,
1369 Elf_Internal_Rela *rel,
1370 struct elf_link_hash_entry *h,
1371 Elf_Internal_Sym *sym)
1372 {
1373 if (h != NULL)
1374 switch (ELF32_R_TYPE (rel->r_info))
1375 {
1376 case R_390_GNU_VTINHERIT:
1377 case R_390_GNU_VTENTRY:
1378 return NULL;
1379 }
1380 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1381
1382 }
1383
1384 /* Update the got entry reference counts for the section being removed. */
1385
1386 static bfd_boolean
1387 elf_s390_gc_sweep_hook (bfd *abfd,
1388 struct bfd_link_info *info,
1389 asection *sec,
1390 const Elf_Internal_Rela *relocs)
1391 {
1392 Elf_Internal_Shdr *symtab_hdr;
1393 struct elf_link_hash_entry **sym_hashes;
1394 bfd_signed_vma *local_got_refcounts;
1395 const Elf_Internal_Rela *rel, *relend;
1396
1397 if (info->relocatable)
1398 return TRUE;
1399
1400 elf_section_data (sec)->local_dynrel = NULL;
1401
1402 symtab_hdr = &elf_symtab_hdr (abfd);
1403 sym_hashes = elf_sym_hashes (abfd);
1404 local_got_refcounts = elf_local_got_refcounts (abfd);
1405
1406 relend = relocs + sec->reloc_count;
1407 for (rel = relocs; rel < relend; rel++)
1408 {
1409 unsigned long r_symndx;
1410 unsigned int r_type;
1411 struct elf_link_hash_entry *h = NULL;
1412
1413 r_symndx = ELF32_R_SYM (rel->r_info);
1414 if (r_symndx >= symtab_hdr->sh_info)
1415 {
1416 struct elf_s390_link_hash_entry *eh;
1417 struct elf_s390_dyn_relocs **pp;
1418 struct elf_s390_dyn_relocs *p;
1419
1420 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1421 while (h->root.type == bfd_link_hash_indirect
1422 || h->root.type == bfd_link_hash_warning)
1423 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1424 eh = (struct elf_s390_link_hash_entry *) h;
1425
1426 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1427 if (p->sec == sec)
1428 {
1429 /* Everything must go for SEC. */
1430 *pp = p->next;
1431 break;
1432 }
1433 }
1434
1435 r_type = ELF32_R_TYPE (rel->r_info);
1436 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1437 switch (r_type)
1438 {
1439 case R_390_TLS_LDM32:
1440 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1441 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1442 break;
1443
1444 case R_390_TLS_GD32:
1445 case R_390_TLS_IE32:
1446 case R_390_TLS_GOTIE12:
1447 case R_390_TLS_GOTIE20:
1448 case R_390_TLS_GOTIE32:
1449 case R_390_TLS_IEENT:
1450 case R_390_GOT12:
1451 case R_390_GOT16:
1452 case R_390_GOT20:
1453 case R_390_GOT32:
1454 case R_390_GOTOFF16:
1455 case R_390_GOTOFF32:
1456 case R_390_GOTPC:
1457 case R_390_GOTPCDBL:
1458 case R_390_GOTENT:
1459 if (h != NULL)
1460 {
1461 if (h->got.refcount > 0)
1462 h->got.refcount -= 1;
1463 }
1464 else if (local_got_refcounts != NULL)
1465 {
1466 if (local_got_refcounts[r_symndx] > 0)
1467 local_got_refcounts[r_symndx] -= 1;
1468 }
1469 break;
1470
1471 case R_390_8:
1472 case R_390_12:
1473 case R_390_16:
1474 case R_390_20:
1475 case R_390_32:
1476 case R_390_PC16:
1477 case R_390_PC16DBL:
1478 case R_390_PC32DBL:
1479 case R_390_PC32:
1480 if (info->shared)
1481 break;
1482 /* Fall through. */
1483
1484 case R_390_PLT16DBL:
1485 case R_390_PLT32DBL:
1486 case R_390_PLT32:
1487 case R_390_PLTOFF16:
1488 case R_390_PLTOFF32:
1489 if (h != NULL)
1490 {
1491 if (h->plt.refcount > 0)
1492 h->plt.refcount -= 1;
1493 }
1494 break;
1495
1496 case R_390_GOTPLT12:
1497 case R_390_GOTPLT16:
1498 case R_390_GOTPLT20:
1499 case R_390_GOTPLT32:
1500 case R_390_GOTPLTENT:
1501 if (h != NULL)
1502 {
1503 if (h->plt.refcount > 0)
1504 {
1505 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1506 h->plt.refcount -= 1;
1507 }
1508 }
1509 else if (local_got_refcounts != NULL)
1510 {
1511 if (local_got_refcounts[r_symndx] > 0)
1512 local_got_refcounts[r_symndx] -= 1;
1513 }
1514 break;
1515
1516 default:
1517 break;
1518 }
1519 }
1520
1521 return TRUE;
1522 }
1523
1524 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1525 entry but we found we will not create any. Called when we find we will
1526 not have any PLT for this symbol, by for example
1527 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1528 or elf_s390_size_dynamic_sections if no dynamic sections will be
1529 created (we're only linking static objects). */
1530
1531 static void
1532 elf_s390_adjust_gotplt (h)
1533 struct elf_s390_link_hash_entry *h;
1534 {
1535 if (h->elf.root.type == bfd_link_hash_warning)
1536 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1537
1538 if (h->gotplt_refcount <= 0)
1539 return;
1540
1541 /* We simply add the number of gotplt references to the number
1542 * of got references for this symbol. */
1543 h->elf.got.refcount += h->gotplt_refcount;
1544 h->gotplt_refcount = -1;
1545 }
1546
1547 /* Adjust a symbol defined by a dynamic object and referenced by a
1548 regular object. The current definition is in some section of the
1549 dynamic object, but we're not including those sections. We have to
1550 change the definition to something the rest of the link can
1551 understand. */
1552
1553 static bfd_boolean
1554 elf_s390_adjust_dynamic_symbol (info, h)
1555 struct bfd_link_info *info;
1556 struct elf_link_hash_entry *h;
1557 {
1558 struct elf_s390_link_hash_table *htab;
1559 asection *s;
1560
1561 /* If this is a function, put it in the procedure linkage table. We
1562 will fill in the contents of the procedure linkage table later
1563 (although we could actually do it here). */
1564 if (h->type == STT_FUNC
1565 || h->needs_plt)
1566 {
1567 if (h->plt.refcount <= 0
1568 || SYMBOL_CALLS_LOCAL (info, h)
1569 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1570 && h->root.type != bfd_link_hash_undefweak))
1571 {
1572 /* This case can occur if we saw a PLT32 reloc in an input
1573 file, but the symbol was never referred to by a dynamic
1574 object, or if all references were garbage collected. In
1575 such a case, we don't actually need to build a procedure
1576 linkage table, and we can just do a PC32 reloc instead. */
1577 h->plt.offset = (bfd_vma) -1;
1578 h->needs_plt = 0;
1579 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1580 }
1581
1582 return TRUE;
1583 }
1584 else
1585 /* It's possible that we incorrectly decided a .plt reloc was
1586 needed for an R_390_PC32 reloc to a non-function sym in
1587 check_relocs. We can't decide accurately between function and
1588 non-function syms in check-relocs; Objects loaded later in
1589 the link may change h->type. So fix it now. */
1590 h->plt.offset = (bfd_vma) -1;
1591
1592 /* If this is a weak symbol, and there is a real definition, the
1593 processor independent code will have arranged for us to see the
1594 real definition first, and we can just use the same value. */
1595 if (h->u.weakdef != NULL)
1596 {
1597 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1598 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1599 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1600 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1601 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1602 h->non_got_ref = h->u.weakdef->non_got_ref;
1603 return TRUE;
1604 }
1605
1606 /* This is a reference to a symbol defined by a dynamic object which
1607 is not a function. */
1608
1609 /* If we are creating a shared library, we must presume that the
1610 only references to the symbol are via the global offset table.
1611 For such cases we need not do anything here; the relocations will
1612 be handled correctly by relocate_section. */
1613 if (info->shared)
1614 return TRUE;
1615
1616 /* If there are no references to this symbol that do not use the
1617 GOT, we don't need to generate a copy reloc. */
1618 if (!h->non_got_ref)
1619 return TRUE;
1620
1621 /* If -z nocopyreloc was given, we won't generate them either. */
1622 if (info->nocopyreloc)
1623 {
1624 h->non_got_ref = 0;
1625 return TRUE;
1626 }
1627
1628 if (ELIMINATE_COPY_RELOCS)
1629 {
1630 struct elf_s390_link_hash_entry * eh;
1631 struct elf_s390_dyn_relocs *p;
1632
1633 eh = (struct elf_s390_link_hash_entry *) h;
1634 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1635 {
1636 s = p->sec->output_section;
1637 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1638 break;
1639 }
1640
1641 /* If we didn't find any dynamic relocs in read-only sections, then
1642 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1643 if (p == NULL)
1644 {
1645 h->non_got_ref = 0;
1646 return TRUE;
1647 }
1648 }
1649
1650 /* We must allocate the symbol in our .dynbss section, which will
1651 become part of the .bss section of the executable. There will be
1652 an entry for this symbol in the .dynsym section. The dynamic
1653 object will contain position independent code, so all references
1654 from the dynamic object to this symbol will go through the global
1655 offset table. The dynamic linker will use the .dynsym entry to
1656 determine the address it must put in the global offset table, so
1657 both the dynamic object and the regular object will refer to the
1658 same memory location for the variable. */
1659
1660 htab = elf_s390_hash_table (info);
1661
1662 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1663 copy the initial value out of the dynamic object and into the
1664 runtime process image. */
1665 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1666 {
1667 htab->srelbss->size += sizeof (Elf32_External_Rela);
1668 h->needs_copy = 1;
1669 }
1670
1671 s = htab->sdynbss;
1672
1673 return _bfd_elf_adjust_dynamic_copy (h, s);
1674 }
1675
1676 /* Allocate space in .plt, .got and associated reloc sections for
1677 dynamic relocs. */
1678
1679 static bfd_boolean
1680 allocate_dynrelocs (h, inf)
1681 struct elf_link_hash_entry *h;
1682 PTR inf;
1683 {
1684 struct bfd_link_info *info;
1685 struct elf_s390_link_hash_table *htab;
1686 struct elf_s390_link_hash_entry *eh;
1687 struct elf_s390_dyn_relocs *p;
1688
1689 if (h->root.type == bfd_link_hash_indirect)
1690 return TRUE;
1691
1692 info = (struct bfd_link_info *) inf;
1693 htab = elf_s390_hash_table (info);
1694
1695 if (htab->elf.dynamic_sections_created
1696 && h->plt.refcount > 0)
1697 {
1698 /* Make sure this symbol is output as a dynamic symbol.
1699 Undefined weak syms won't yet be marked as dynamic. */
1700 if (h->dynindx == -1
1701 && !h->forced_local)
1702 {
1703 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1704 return FALSE;
1705 }
1706
1707 if (info->shared
1708 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1709 {
1710 asection *s = htab->splt;
1711
1712 /* If this is the first .plt entry, make room for the special
1713 first entry. */
1714 if (s->size == 0)
1715 s->size += PLT_FIRST_ENTRY_SIZE;
1716
1717 h->plt.offset = s->size;
1718
1719 /* If this symbol is not defined in a regular file, and we are
1720 not generating a shared library, then set the symbol to this
1721 location in the .plt. This is required to make function
1722 pointers compare as equal between the normal executable and
1723 the shared library. */
1724 if (! info->shared
1725 && !h->def_regular)
1726 {
1727 h->root.u.def.section = s;
1728 h->root.u.def.value = h->plt.offset;
1729 }
1730
1731 /* Make room for this entry. */
1732 s->size += PLT_ENTRY_SIZE;
1733
1734 /* We also need to make an entry in the .got.plt section, which
1735 will be placed in the .got section by the linker script. */
1736 htab->sgotplt->size += GOT_ENTRY_SIZE;
1737
1738 /* We also need to make an entry in the .rela.plt section. */
1739 htab->srelplt->size += sizeof (Elf32_External_Rela);
1740 }
1741 else
1742 {
1743 h->plt.offset = (bfd_vma) -1;
1744 h->needs_plt = 0;
1745 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1746 }
1747 }
1748 else
1749 {
1750 h->plt.offset = (bfd_vma) -1;
1751 h->needs_plt = 0;
1752 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1753 }
1754
1755 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1756 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1757 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1758 we can save the dynamic TLS relocation. */
1759 if (h->got.refcount > 0
1760 && !info->shared
1761 && h->dynindx == -1
1762 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1763 {
1764 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1765 /* For the GOTIE access without a literal pool entry the offset has
1766 to be stored somewhere. The immediate value in the instruction
1767 is not bit enough so the value is stored in the got. */
1768 {
1769 h->got.offset = htab->sgot->size;
1770 htab->sgot->size += GOT_ENTRY_SIZE;
1771 }
1772 else
1773 h->got.offset = (bfd_vma) -1;
1774 }
1775 else if (h->got.refcount > 0)
1776 {
1777 asection *s;
1778 bfd_boolean dyn;
1779 int tls_type = elf_s390_hash_entry(h)->tls_type;
1780
1781 /* Make sure this symbol is output as a dynamic symbol.
1782 Undefined weak syms won't yet be marked as dynamic. */
1783 if (h->dynindx == -1
1784 && !h->forced_local)
1785 {
1786 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1787 return FALSE;
1788 }
1789
1790 s = htab->sgot;
1791 h->got.offset = s->size;
1792 s->size += GOT_ENTRY_SIZE;
1793 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1794 if (tls_type == GOT_TLS_GD)
1795 s->size += GOT_ENTRY_SIZE;
1796 dyn = htab->elf.dynamic_sections_created;
1797 /* R_390_TLS_IE32 needs one dynamic relocation,
1798 R_390_TLS_GD32 needs one if local symbol and two if global. */
1799 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1800 || tls_type >= GOT_TLS_IE)
1801 htab->srelgot->size += sizeof (Elf32_External_Rela);
1802 else if (tls_type == GOT_TLS_GD)
1803 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1804 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1805 || h->root.type != bfd_link_hash_undefweak)
1806 && (info->shared
1807 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1808 htab->srelgot->size += sizeof (Elf32_External_Rela);
1809 }
1810 else
1811 h->got.offset = (bfd_vma) -1;
1812
1813 eh = (struct elf_s390_link_hash_entry *) h;
1814 if (eh->dyn_relocs == NULL)
1815 return TRUE;
1816
1817 /* In the shared -Bsymbolic case, discard space allocated for
1818 dynamic pc-relative relocs against symbols which turn out to be
1819 defined in regular objects. For the normal shared case, discard
1820 space for pc-relative relocs that have become local due to symbol
1821 visibility changes. */
1822
1823 if (info->shared)
1824 {
1825 if (SYMBOL_CALLS_LOCAL (info, h))
1826 {
1827 struct elf_s390_dyn_relocs **pp;
1828
1829 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1830 {
1831 p->count -= p->pc_count;
1832 p->pc_count = 0;
1833 if (p->count == 0)
1834 *pp = p->next;
1835 else
1836 pp = &p->next;
1837 }
1838 }
1839
1840 /* Also discard relocs on undefined weak syms with non-default
1841 visibility. */
1842 if (eh->dyn_relocs != NULL
1843 && h->root.type == bfd_link_hash_undefweak)
1844 {
1845 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1846 eh->dyn_relocs = NULL;
1847
1848 /* Make sure undefined weak symbols are output as a dynamic
1849 symbol in PIEs. */
1850 else if (h->dynindx == -1
1851 && !h->forced_local)
1852 {
1853 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1854 return FALSE;
1855 }
1856 }
1857 }
1858 else if (ELIMINATE_COPY_RELOCS)
1859 {
1860 /* For the non-shared case, discard space for relocs against
1861 symbols which turn out to need copy relocs or are not
1862 dynamic. */
1863
1864 if (!h->non_got_ref
1865 && ((h->def_dynamic
1866 && !h->def_regular)
1867 || (htab->elf.dynamic_sections_created
1868 && (h->root.type == bfd_link_hash_undefweak
1869 || h->root.type == bfd_link_hash_undefined))))
1870 {
1871 /* Make sure this symbol is output as a dynamic symbol.
1872 Undefined weak syms won't yet be marked as dynamic. */
1873 if (h->dynindx == -1
1874 && !h->forced_local)
1875 {
1876 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1877 return FALSE;
1878 }
1879
1880 /* If that succeeded, we know we'll be keeping all the
1881 relocs. */
1882 if (h->dynindx != -1)
1883 goto keep;
1884 }
1885
1886 eh->dyn_relocs = NULL;
1887
1888 keep: ;
1889 }
1890
1891 /* Finally, allocate space. */
1892 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1893 {
1894 asection *sreloc = elf_section_data (p->sec)->sreloc;
1895
1896 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1897 }
1898
1899 return TRUE;
1900 }
1901
1902 /* Find any dynamic relocs that apply to read-only sections. */
1903
1904 static bfd_boolean
1905 readonly_dynrelocs (h, inf)
1906 struct elf_link_hash_entry *h;
1907 PTR inf;
1908 {
1909 struct elf_s390_link_hash_entry *eh;
1910 struct elf_s390_dyn_relocs *p;
1911
1912 eh = (struct elf_s390_link_hash_entry *) h;
1913 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1914 {
1915 asection *s = p->sec->output_section;
1916
1917 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1918 {
1919 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1920
1921 info->flags |= DF_TEXTREL;
1922
1923 /* Not an error, just cut short the traversal. */
1924 return FALSE;
1925 }
1926 }
1927 return TRUE;
1928 }
1929
1930 /* Set the sizes of the dynamic sections. */
1931
1932 static bfd_boolean
1933 elf_s390_size_dynamic_sections (output_bfd, info)
1934 bfd *output_bfd ATTRIBUTE_UNUSED;
1935 struct bfd_link_info *info;
1936 {
1937 struct elf_s390_link_hash_table *htab;
1938 bfd *dynobj;
1939 asection *s;
1940 bfd_boolean relocs;
1941 bfd *ibfd;
1942
1943 htab = elf_s390_hash_table (info);
1944 dynobj = htab->elf.dynobj;
1945 if (dynobj == NULL)
1946 abort ();
1947
1948 if (htab->elf.dynamic_sections_created)
1949 {
1950 /* Set the contents of the .interp section to the interpreter. */
1951 if (info->executable)
1952 {
1953 s = bfd_get_section_by_name (dynobj, ".interp");
1954 if (s == NULL)
1955 abort ();
1956 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1957 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1958 }
1959 }
1960
1961 /* Set up .got offsets for local syms, and space for local dynamic
1962 relocs. */
1963 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1964 {
1965 bfd_signed_vma *local_got;
1966 bfd_signed_vma *end_local_got;
1967 char *local_tls_type;
1968 bfd_size_type locsymcount;
1969 Elf_Internal_Shdr *symtab_hdr;
1970 asection *srela;
1971
1972 if (! is_s390_elf (ibfd))
1973 continue;
1974
1975 for (s = ibfd->sections; s != NULL; s = s->next)
1976 {
1977 struct elf_s390_dyn_relocs *p;
1978
1979 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
1980 {
1981 if (!bfd_is_abs_section (p->sec)
1982 && bfd_is_abs_section (p->sec->output_section))
1983 {
1984 /* Input section has been discarded, either because
1985 it is a copy of a linkonce section or due to
1986 linker script /DISCARD/, so we'll be discarding
1987 the relocs too. */
1988 }
1989 else if (p->count != 0)
1990 {
1991 srela = elf_section_data (p->sec)->sreloc;
1992 srela->size += p->count * sizeof (Elf32_External_Rela);
1993 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1994 info->flags |= DF_TEXTREL;
1995 }
1996 }
1997 }
1998
1999 local_got = elf_local_got_refcounts (ibfd);
2000 if (!local_got)
2001 continue;
2002
2003 symtab_hdr = &elf_symtab_hdr (ibfd);
2004 locsymcount = symtab_hdr->sh_info;
2005 end_local_got = local_got + locsymcount;
2006 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2007 s = htab->sgot;
2008 srela = htab->srelgot;
2009 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2010 {
2011 if (*local_got > 0)
2012 {
2013 *local_got = s->size;
2014 s->size += GOT_ENTRY_SIZE;
2015 if (*local_tls_type == GOT_TLS_GD)
2016 s->size += GOT_ENTRY_SIZE;
2017 if (info->shared)
2018 srela->size += sizeof (Elf32_External_Rela);
2019 }
2020 else
2021 *local_got = (bfd_vma) -1;
2022 }
2023 }
2024
2025 if (htab->tls_ldm_got.refcount > 0)
2026 {
2027 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2028 relocs. */
2029 htab->tls_ldm_got.offset = htab->sgot->size;
2030 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2031 htab->srelgot->size += sizeof (Elf32_External_Rela);
2032 }
2033 else
2034 htab->tls_ldm_got.offset = -1;
2035
2036 /* Allocate global sym .plt and .got entries, and space for global
2037 sym dynamic relocs. */
2038 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2039
2040 /* We now have determined the sizes of the various dynamic sections.
2041 Allocate memory for them. */
2042 relocs = FALSE;
2043 for (s = dynobj->sections; s != NULL; s = s->next)
2044 {
2045 if ((s->flags & SEC_LINKER_CREATED) == 0)
2046 continue;
2047
2048 if (s == htab->splt
2049 || s == htab->sgot
2050 || s == htab->sgotplt
2051 || s == htab->sdynbss)
2052 {
2053 /* Strip this section if we don't need it; see the
2054 comment below. */
2055 }
2056 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2057 {
2058 if (s->size != 0)
2059 relocs = TRUE;
2060
2061 /* We use the reloc_count field as a counter if we need
2062 to copy relocs into the output file. */
2063 s->reloc_count = 0;
2064 }
2065 else
2066 {
2067 /* It's not one of our sections, so don't allocate space. */
2068 continue;
2069 }
2070
2071 if (s->size == 0)
2072 {
2073 /* If we don't need this section, strip it from the
2074 output file. This is to handle .rela.bss and
2075 .rela.plt. We must create it in
2076 create_dynamic_sections, because it must be created
2077 before the linker maps input sections to output
2078 sections. The linker does that before
2079 adjust_dynamic_symbol is called, and it is that
2080 function which decides whether anything needs to go
2081 into these sections. */
2082
2083 s->flags |= SEC_EXCLUDE;
2084 continue;
2085 }
2086
2087 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2088 continue;
2089
2090 /* Allocate memory for the section contents. We use bfd_zalloc
2091 here in case unused entries are not reclaimed before the
2092 section's contents are written out. This should not happen,
2093 but this way if it does, we get a R_390_NONE reloc instead
2094 of garbage. */
2095 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2096 if (s->contents == NULL)
2097 return FALSE;
2098 }
2099
2100 if (htab->elf.dynamic_sections_created)
2101 {
2102 /* Add some entries to the .dynamic section. We fill in the
2103 values later, in elf_s390_finish_dynamic_sections, but we
2104 must add the entries now so that we get the correct size for
2105 the .dynamic section. The DT_DEBUG entry is filled in by the
2106 dynamic linker and used by the debugger. */
2107 #define add_dynamic_entry(TAG, VAL) \
2108 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2109
2110 if (info->executable)
2111 {
2112 if (!add_dynamic_entry (DT_DEBUG, 0))
2113 return FALSE;
2114 }
2115
2116 if (htab->splt->size != 0)
2117 {
2118 if (!add_dynamic_entry (DT_PLTGOT, 0)
2119 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2120 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2121 || !add_dynamic_entry (DT_JMPREL, 0))
2122 return FALSE;
2123 }
2124
2125 if (relocs)
2126 {
2127 if (!add_dynamic_entry (DT_RELA, 0)
2128 || !add_dynamic_entry (DT_RELASZ, 0)
2129 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2130 return FALSE;
2131
2132 /* If any dynamic relocs apply to a read-only section,
2133 then we need a DT_TEXTREL entry. */
2134 if ((info->flags & DF_TEXTREL) == 0)
2135 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2136 (PTR) info);
2137
2138 if ((info->flags & DF_TEXTREL) != 0)
2139 {
2140 if (!add_dynamic_entry (DT_TEXTREL, 0))
2141 return FALSE;
2142 }
2143 }
2144 }
2145 #undef add_dynamic_entry
2146
2147 return TRUE;
2148 }
2149
2150 /* Return the base VMA address which should be subtracted from real addresses
2151 when resolving @dtpoff relocation.
2152 This is PT_TLS segment p_vaddr. */
2153
2154 static bfd_vma
2155 dtpoff_base (info)
2156 struct bfd_link_info *info;
2157 {
2158 /* If tls_sec is NULL, we should have signalled an error already. */
2159 if (elf_hash_table (info)->tls_sec == NULL)
2160 return 0;
2161 return elf_hash_table (info)->tls_sec->vma;
2162 }
2163
2164 /* Return the relocation value for @tpoff relocation
2165 if STT_TLS virtual address is ADDRESS. */
2166
2167 static bfd_vma
2168 tpoff (info, address)
2169 struct bfd_link_info *info;
2170 bfd_vma address;
2171 {
2172 struct elf_link_hash_table *htab = elf_hash_table (info);
2173
2174 /* If tls_sec is NULL, we should have signalled an error already. */
2175 if (htab->tls_sec == NULL)
2176 return 0;
2177 return htab->tls_size + htab->tls_sec->vma - address;
2178 }
2179
2180 /* Complain if TLS instruction relocation is against an invalid
2181 instruction. */
2182
2183 static void
2184 invalid_tls_insn (input_bfd, input_section, rel)
2185 bfd *input_bfd;
2186 asection *input_section;
2187 Elf_Internal_Rela *rel;
2188 {
2189 reloc_howto_type *howto;
2190
2191 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2192 (*_bfd_error_handler)
2193 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2194 input_bfd,
2195 input_section,
2196 (long) rel->r_offset,
2197 howto->name);
2198 bfd_set_error (bfd_error_bad_value);
2199 }
2200
2201 /* Relocate a 390 ELF section. */
2202
2203 static bfd_boolean
2204 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2205 contents, relocs, local_syms, local_sections)
2206 bfd *output_bfd;
2207 struct bfd_link_info *info;
2208 bfd *input_bfd;
2209 asection *input_section;
2210 bfd_byte *contents;
2211 Elf_Internal_Rela *relocs;
2212 Elf_Internal_Sym *local_syms;
2213 asection **local_sections;
2214 {
2215 struct elf_s390_link_hash_table *htab;
2216 Elf_Internal_Shdr *symtab_hdr;
2217 struct elf_link_hash_entry **sym_hashes;
2218 bfd_vma *local_got_offsets;
2219 Elf_Internal_Rela *rel;
2220 Elf_Internal_Rela *relend;
2221
2222 BFD_ASSERT (is_s390_elf (input_bfd));
2223
2224 htab = elf_s390_hash_table (info);
2225 symtab_hdr = &elf_symtab_hdr (input_bfd);
2226 sym_hashes = elf_sym_hashes (input_bfd);
2227 local_got_offsets = elf_local_got_offsets (input_bfd);
2228
2229 rel = relocs;
2230 relend = relocs + input_section->reloc_count;
2231 for (; rel < relend; rel++)
2232 {
2233 unsigned int r_type;
2234 reloc_howto_type *howto;
2235 unsigned long r_symndx;
2236 struct elf_link_hash_entry *h;
2237 Elf_Internal_Sym *sym;
2238 asection *sec;
2239 bfd_vma off;
2240 bfd_vma relocation;
2241 bfd_boolean unresolved_reloc;
2242 bfd_reloc_status_type r;
2243 int tls_type;
2244
2245 r_type = ELF32_R_TYPE (rel->r_info);
2246 if (r_type == (int) R_390_GNU_VTINHERIT
2247 || r_type == (int) R_390_GNU_VTENTRY)
2248 continue;
2249 if (r_type >= (int) R_390_max)
2250 {
2251 bfd_set_error (bfd_error_bad_value);
2252 return FALSE;
2253 }
2254
2255 howto = elf_howto_table + r_type;
2256 r_symndx = ELF32_R_SYM (rel->r_info);
2257
2258 h = NULL;
2259 sym = NULL;
2260 sec = NULL;
2261 unresolved_reloc = FALSE;
2262 if (r_symndx < symtab_hdr->sh_info)
2263 {
2264 sym = local_syms + r_symndx;
2265 sec = local_sections[r_symndx];
2266 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2267 }
2268 else
2269 {
2270 bfd_boolean warned ATTRIBUTE_UNUSED;
2271
2272 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2273 r_symndx, symtab_hdr, sym_hashes,
2274 h, sec, relocation,
2275 unresolved_reloc, warned);
2276 }
2277
2278 if (sec != NULL && elf_discarded_section (sec))
2279 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2280 rel, relend, howto, contents);
2281
2282 if (info->relocatable)
2283 continue;
2284
2285 switch (r_type)
2286 {
2287 case R_390_GOTPLT12:
2288 case R_390_GOTPLT16:
2289 case R_390_GOTPLT20:
2290 case R_390_GOTPLT32:
2291 case R_390_GOTPLTENT:
2292 /* There are three cases for a GOTPLT relocation. 1) The
2293 relocation is against the jump slot entry of a plt that
2294 will get emitted to the output file. 2) The relocation
2295 is against the jump slot of a plt entry that has been
2296 removed. elf_s390_adjust_gotplt has created a GOT entry
2297 as replacement. 3) The relocation is against a local symbol.
2298 Cases 2) and 3) are the same as the GOT relocation code
2299 so we just have to test for case 1 and fall through for
2300 the other two. */
2301 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2302 {
2303 bfd_vma plt_index;
2304
2305 /* Calc. index no.
2306 Current offset - size first entry / entry size. */
2307 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2308 PLT_ENTRY_SIZE;
2309
2310 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2311 addr & GOT addr. */
2312 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2313 unresolved_reloc = FALSE;
2314
2315 if (r_type == R_390_GOTPLTENT)
2316 relocation += htab->sgot->output_section->vma;
2317 break;
2318 }
2319 /* Fall through. */
2320
2321 case R_390_GOT12:
2322 case R_390_GOT16:
2323 case R_390_GOT20:
2324 case R_390_GOT32:
2325 case R_390_GOTENT:
2326 /* Relocation is to the entry for this symbol in the global
2327 offset table. */
2328 if (htab->sgot == NULL)
2329 abort ();
2330
2331 if (h != NULL)
2332 {
2333 bfd_boolean dyn;
2334
2335 off = h->got.offset;
2336 dyn = htab->elf.dynamic_sections_created;
2337 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2338 || (info->shared
2339 && SYMBOL_REFERENCES_LOCAL (info, h))
2340 || (ELF_ST_VISIBILITY (h->other)
2341 && h->root.type == bfd_link_hash_undefweak))
2342 {
2343 /* This is actually a static link, or it is a
2344 -Bsymbolic link and the symbol is defined
2345 locally, or the symbol was forced to be local
2346 because of a version file. We must initialize
2347 this entry in the global offset table. Since the
2348 offset must always be a multiple of 2, we use the
2349 least significant bit to record whether we have
2350 initialized it already.
2351
2352 When doing a dynamic link, we create a .rel.got
2353 relocation entry to initialize the value. This
2354 is done in the finish_dynamic_symbol routine. */
2355 if ((off & 1) != 0)
2356 off &= ~1;
2357 else
2358 {
2359 bfd_put_32 (output_bfd, relocation,
2360 htab->sgot->contents + off);
2361 h->got.offset |= 1;
2362 }
2363 }
2364 else
2365 unresolved_reloc = FALSE;
2366 }
2367 else
2368 {
2369 if (local_got_offsets == NULL)
2370 abort ();
2371
2372 off = local_got_offsets[r_symndx];
2373
2374 /* The offset must always be a multiple of 4. We use
2375 the least significant bit to record whether we have
2376 already generated the necessary reloc. */
2377 if ((off & 1) != 0)
2378 off &= ~1;
2379 else
2380 {
2381 bfd_put_32 (output_bfd, relocation,
2382 htab->sgot->contents + off);
2383
2384 if (info->shared)
2385 {
2386 asection *srelgot;
2387 Elf_Internal_Rela outrel;
2388 bfd_byte *loc;
2389
2390 srelgot = htab->srelgot;
2391 if (srelgot == NULL)
2392 abort ();
2393
2394 outrel.r_offset = (htab->sgot->output_section->vma
2395 + htab->sgot->output_offset
2396 + off);
2397 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2398 outrel.r_addend = relocation;
2399 loc = srelgot->contents;
2400 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2401 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2402 }
2403
2404 local_got_offsets[r_symndx] |= 1;
2405 }
2406 }
2407
2408 if (off >= (bfd_vma) -2)
2409 abort ();
2410
2411 relocation = htab->sgot->output_offset + off;
2412
2413 /* For @GOTENT the relocation is against the offset between
2414 the instruction and the symbols entry in the GOT and not
2415 between the start of the GOT and the symbols entry. We
2416 add the vma of the GOT to get the correct value. */
2417 if ( r_type == R_390_GOTENT
2418 || r_type == R_390_GOTPLTENT)
2419 relocation += htab->sgot->output_section->vma;
2420
2421 break;
2422
2423 case R_390_GOTOFF16:
2424 case R_390_GOTOFF32:
2425 /* Relocation is relative to the start of the global offset
2426 table. */
2427
2428 /* Note that sgot->output_offset is not involved in this
2429 calculation. We always want the start of .got. If we
2430 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2431 permitted by the ABI, we might have to change this
2432 calculation. */
2433 relocation -= htab->sgot->output_section->vma;
2434 break;
2435
2436 case R_390_GOTPC:
2437 case R_390_GOTPCDBL:
2438 /* Use global offset table as symbol value. */
2439 relocation = htab->sgot->output_section->vma;
2440 unresolved_reloc = FALSE;
2441 break;
2442
2443 case R_390_PLT16DBL:
2444 case R_390_PLT32DBL:
2445 case R_390_PLT32:
2446 /* Relocation is to the entry for this symbol in the
2447 procedure linkage table. */
2448
2449 /* Resolve a PLT32 reloc against a local symbol directly,
2450 without using the procedure linkage table. */
2451 if (h == NULL)
2452 break;
2453
2454 if (h->plt.offset == (bfd_vma) -1
2455 || htab->splt == NULL)
2456 {
2457 /* We didn't make a PLT entry for this symbol. This
2458 happens when statically linking PIC code, or when
2459 using -Bsymbolic. */
2460 break;
2461 }
2462
2463 relocation = (htab->splt->output_section->vma
2464 + htab->splt->output_offset
2465 + h->plt.offset);
2466 unresolved_reloc = FALSE;
2467 break;
2468
2469 case R_390_PLTOFF16:
2470 case R_390_PLTOFF32:
2471 /* Relocation is to the entry for this symbol in the
2472 procedure linkage table relative to the start of the GOT. */
2473
2474 /* For local symbols or if we didn't make a PLT entry for
2475 this symbol resolve the symbol directly. */
2476 if ( h == NULL
2477 || h->plt.offset == (bfd_vma) -1
2478 || htab->splt == NULL)
2479 {
2480 relocation -= htab->sgot->output_section->vma;
2481 break;
2482 }
2483
2484 relocation = (htab->splt->output_section->vma
2485 + htab->splt->output_offset
2486 + h->plt.offset
2487 - htab->sgot->output_section->vma);
2488 unresolved_reloc = FALSE;
2489 break;
2490
2491 case R_390_8:
2492 case R_390_16:
2493 case R_390_32:
2494 case R_390_PC16:
2495 case R_390_PC16DBL:
2496 case R_390_PC32DBL:
2497 case R_390_PC32:
2498 if ((input_section->flags & SEC_ALLOC) == 0)
2499 break;
2500
2501 if ((info->shared
2502 && (h == NULL
2503 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2504 || h->root.type != bfd_link_hash_undefweak)
2505 && ((r_type != R_390_PC16
2506 && r_type != R_390_PC16DBL
2507 && r_type != R_390_PC32DBL
2508 && r_type != R_390_PC32)
2509 || !SYMBOL_CALLS_LOCAL (info, h)))
2510 || (ELIMINATE_COPY_RELOCS
2511 && !info->shared
2512 && h != NULL
2513 && h->dynindx != -1
2514 && !h->non_got_ref
2515 && ((h->def_dynamic
2516 && !h->def_regular)
2517 || h->root.type == bfd_link_hash_undefweak
2518 || h->root.type == bfd_link_hash_undefined)))
2519 {
2520 Elf_Internal_Rela outrel;
2521 bfd_boolean skip, relocate;
2522 asection *sreloc;
2523 bfd_byte *loc;
2524
2525 /* When generating a shared object, these relocations
2526 are copied into the output file to be resolved at run
2527 time. */
2528
2529 skip = FALSE;
2530 relocate = FALSE;
2531
2532 outrel.r_offset =
2533 _bfd_elf_section_offset (output_bfd, info, input_section,
2534 rel->r_offset);
2535 if (outrel.r_offset == (bfd_vma) -1)
2536 skip = TRUE;
2537 else if (outrel.r_offset == (bfd_vma) -2)
2538 skip = TRUE, relocate = TRUE;
2539 outrel.r_offset += (input_section->output_section->vma
2540 + input_section->output_offset);
2541
2542 if (skip)
2543 memset (&outrel, 0, sizeof outrel);
2544 else if (h != NULL
2545 && h->dynindx != -1
2546 && (r_type == R_390_PC16
2547 || r_type == R_390_PC16DBL
2548 || r_type == R_390_PC32DBL
2549 || r_type == R_390_PC32
2550 || !info->shared
2551 || !SYMBOLIC_BIND (info, h)
2552 || !h->def_regular))
2553 {
2554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2555 outrel.r_addend = rel->r_addend;
2556 }
2557 else
2558 {
2559 /* This symbol is local, or marked to become local. */
2560 outrel.r_addend = relocation + rel->r_addend;
2561 if (r_type == R_390_32)
2562 {
2563 relocate = TRUE;
2564 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2565 }
2566 else
2567 {
2568 long sindx;
2569
2570 if (bfd_is_abs_section (sec))
2571 sindx = 0;
2572 else if (sec == NULL || sec->owner == NULL)
2573 {
2574 bfd_set_error(bfd_error_bad_value);
2575 return FALSE;
2576 }
2577 else
2578 {
2579 asection *osec;
2580
2581 osec = sec->output_section;
2582 sindx = elf_section_data (osec)->dynindx;
2583 if (sindx == 0)
2584 {
2585 osec = htab->elf.text_index_section;
2586 sindx = elf_section_data (osec)->dynindx;
2587 }
2588 BFD_ASSERT (sindx != 0);
2589
2590 /* We are turning this relocation into one
2591 against a section symbol, so subtract out
2592 the output section's address but not the
2593 offset of the input section in the output
2594 section. */
2595 outrel.r_addend -= osec->vma;
2596 }
2597 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2598 }
2599 }
2600
2601 sreloc = elf_section_data (input_section)->sreloc;
2602 if (sreloc == NULL)
2603 abort ();
2604
2605 loc = sreloc->contents;
2606 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2607 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2608
2609 /* If this reloc is against an external symbol, we do
2610 not want to fiddle with the addend. Otherwise, we
2611 need to include the symbol value so that it becomes
2612 an addend for the dynamic reloc. */
2613 if (! relocate)
2614 continue;
2615 }
2616 break;
2617
2618 /* Relocations for tls literal pool entries. */
2619 case R_390_TLS_IE32:
2620 if (info->shared)
2621 {
2622 Elf_Internal_Rela outrel;
2623 asection *sreloc;
2624 bfd_byte *loc;
2625
2626 outrel.r_offset = rel->r_offset
2627 + input_section->output_section->vma
2628 + input_section->output_offset;
2629 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2630 sreloc = elf_section_data (input_section)->sreloc;
2631 if (sreloc == NULL)
2632 abort ();
2633 loc = sreloc->contents;
2634 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2635 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2636 }
2637 /* Fall through. */
2638
2639 case R_390_TLS_GD32:
2640 case R_390_TLS_GOTIE32:
2641 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2642 tls_type = GOT_UNKNOWN;
2643 if (h == NULL && local_got_offsets)
2644 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2645 else if (h != NULL)
2646 {
2647 tls_type = elf_s390_hash_entry(h)->tls_type;
2648 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2649 r_type = R_390_TLS_LE32;
2650 }
2651 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2652 r_type = R_390_TLS_IE32;
2653
2654 if (r_type == R_390_TLS_LE32)
2655 {
2656 /* This relocation gets optimized away by the local exec
2657 access optimization. */
2658 BFD_ASSERT (! unresolved_reloc);
2659 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2660 contents + rel->r_offset);
2661 continue;
2662 }
2663
2664 if (htab->sgot == NULL)
2665 abort ();
2666
2667 if (h != NULL)
2668 off = h->got.offset;
2669 else
2670 {
2671 if (local_got_offsets == NULL)
2672 abort ();
2673
2674 off = local_got_offsets[r_symndx];
2675 }
2676
2677 emit_tls_relocs:
2678
2679 if ((off & 1) != 0)
2680 off &= ~1;
2681 else
2682 {
2683 Elf_Internal_Rela outrel;
2684 bfd_byte *loc;
2685 int dr_type, indx;
2686
2687 if (htab->srelgot == NULL)
2688 abort ();
2689
2690 outrel.r_offset = (htab->sgot->output_section->vma
2691 + htab->sgot->output_offset + off);
2692
2693 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2694 if (r_type == R_390_TLS_GD32)
2695 dr_type = R_390_TLS_DTPMOD;
2696 else
2697 dr_type = R_390_TLS_TPOFF;
2698 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2699 outrel.r_addend = relocation - dtpoff_base (info);
2700 else
2701 outrel.r_addend = 0;
2702 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2703 loc = htab->srelgot->contents;
2704 loc += htab->srelgot->reloc_count++
2705 * sizeof (Elf32_External_Rela);
2706 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2707
2708 if (r_type == R_390_TLS_GD32)
2709 {
2710 if (indx == 0)
2711 {
2712 BFD_ASSERT (! unresolved_reloc);
2713 bfd_put_32 (output_bfd,
2714 relocation - dtpoff_base (info),
2715 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2716 }
2717 else
2718 {
2719 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2720 outrel.r_offset += GOT_ENTRY_SIZE;
2721 outrel.r_addend = 0;
2722 htab->srelgot->reloc_count++;
2723 loc += sizeof (Elf32_External_Rela);
2724 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2725 }
2726 }
2727
2728 if (h != NULL)
2729 h->got.offset |= 1;
2730 else
2731 local_got_offsets[r_symndx] |= 1;
2732 }
2733
2734 if (off >= (bfd_vma) -2)
2735 abort ();
2736 if (r_type == ELF32_R_TYPE (rel->r_info))
2737 {
2738 relocation = htab->sgot->output_offset + off;
2739 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2740 relocation += htab->sgot->output_section->vma;
2741 unresolved_reloc = FALSE;
2742 }
2743 else
2744 {
2745 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2746 contents + rel->r_offset);
2747 continue;
2748 }
2749 break;
2750
2751 case R_390_TLS_GOTIE12:
2752 case R_390_TLS_GOTIE20:
2753 case R_390_TLS_IEENT:
2754 if (h == NULL)
2755 {
2756 if (local_got_offsets == NULL)
2757 abort();
2758 off = local_got_offsets[r_symndx];
2759 if (info->shared)
2760 goto emit_tls_relocs;
2761 }
2762 else
2763 {
2764 off = h->got.offset;
2765 tls_type = elf_s390_hash_entry(h)->tls_type;
2766 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2767 goto emit_tls_relocs;
2768 }
2769
2770 if (htab->sgot == NULL)
2771 abort ();
2772
2773 BFD_ASSERT (! unresolved_reloc);
2774 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2775 htab->sgot->contents + off);
2776 relocation = htab->sgot->output_offset + off;
2777 if (r_type == R_390_TLS_IEENT)
2778 relocation += htab->sgot->output_section->vma;
2779 unresolved_reloc = FALSE;
2780 break;
2781
2782 case R_390_TLS_LDM32:
2783 if (! info->shared)
2784 /* The literal pool entry this relocation refers to gets ignored
2785 by the optimized code of the local exec model. Do nothing
2786 and the value will turn out zero. */
2787 continue;
2788
2789 if (htab->sgot == NULL)
2790 abort ();
2791
2792 off = htab->tls_ldm_got.offset;
2793 if (off & 1)
2794 off &= ~1;
2795 else
2796 {
2797 Elf_Internal_Rela outrel;
2798 bfd_byte *loc;
2799
2800 if (htab->srelgot == NULL)
2801 abort ();
2802
2803 outrel.r_offset = (htab->sgot->output_section->vma
2804 + htab->sgot->output_offset + off);
2805
2806 bfd_put_32 (output_bfd, 0,
2807 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2808 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2809 outrel.r_addend = 0;
2810 loc = htab->srelgot->contents;
2811 loc += htab->srelgot->reloc_count++
2812 * sizeof (Elf32_External_Rela);
2813 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2814 htab->tls_ldm_got.offset |= 1;
2815 }
2816 relocation = htab->sgot->output_offset + off;
2817 unresolved_reloc = FALSE;
2818 break;
2819
2820 case R_390_TLS_LE32:
2821 if (info->shared)
2822 {
2823 /* Linking a shared library with non-fpic code requires
2824 a R_390_TLS_TPOFF relocation. */
2825 Elf_Internal_Rela outrel;
2826 asection *sreloc;
2827 bfd_byte *loc;
2828 int indx;
2829
2830 outrel.r_offset = rel->r_offset
2831 + input_section->output_section->vma
2832 + input_section->output_offset;
2833 if (h != NULL && h->dynindx != -1)
2834 indx = h->dynindx;
2835 else
2836 indx = 0;
2837 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2838 if (indx == 0)
2839 outrel.r_addend = relocation - dtpoff_base (info);
2840 else
2841 outrel.r_addend = 0;
2842 sreloc = elf_section_data (input_section)->sreloc;
2843 if (sreloc == NULL)
2844 abort ();
2845 loc = sreloc->contents;
2846 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2847 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2848 }
2849 else
2850 {
2851 BFD_ASSERT (! unresolved_reloc);
2852 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2853 contents + rel->r_offset);
2854 }
2855 continue;
2856
2857 case R_390_TLS_LDO32:
2858 if (info->shared || (input_section->flags & SEC_DEBUGGING))
2859 relocation -= dtpoff_base (info);
2860 else
2861 /* When converting LDO to LE, we must negate. */
2862 relocation = -tpoff (info, relocation);
2863 break;
2864
2865 /* Relocations for tls instructions. */
2866 case R_390_TLS_LOAD:
2867 case R_390_TLS_GDCALL:
2868 case R_390_TLS_LDCALL:
2869 tls_type = GOT_UNKNOWN;
2870 if (h == NULL && local_got_offsets)
2871 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2872 else if (h != NULL)
2873 tls_type = elf_s390_hash_entry(h)->tls_type;
2874
2875 if (tls_type == GOT_TLS_GD)
2876 continue;
2877
2878 if (r_type == R_390_TLS_LOAD)
2879 {
2880 if (!info->shared && (h == NULL || h->dynindx == -1))
2881 {
2882 /* IE->LE transition. Four valid cases:
2883 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2884 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2885 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2886 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2887 unsigned int insn, ry;
2888
2889 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2890 ry = 0;
2891 if ((insn & 0xff00f000) == 0x58000000)
2892 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2893 ry = (insn & 0x000f0000);
2894 else if ((insn & 0xff0f0000) == 0x58000000)
2895 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2896 ry = (insn & 0x0000f000) << 4;
2897 else if ((insn & 0xff00f000) == 0x5800c000)
2898 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2899 ry = (insn & 0x000f0000);
2900 else if ((insn & 0xff0f0000) == 0x580c0000)
2901 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2902 ry = (insn & 0x0000f000) << 4;
2903 else
2904 invalid_tls_insn (input_bfd, input_section, rel);
2905 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2906 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2907 }
2908 }
2909 else if (r_type == R_390_TLS_GDCALL)
2910 {
2911 unsigned int insn;
2912
2913 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2914 if ((insn & 0xff000fff) != 0x4d000000 &&
2915 (insn & 0xffff0000) != 0xc0e50000 &&
2916 (insn & 0xff000000) != 0x0d000000)
2917 invalid_tls_insn (input_bfd, input_section, rel);
2918 if (!info->shared && (h == NULL || h->dynindx == -1))
2919 {
2920 if ((insn & 0xff000000) == 0x0d000000)
2921 {
2922 /* GD->LE transition.
2923 basr rx, ry -> nopr r7 */
2924 insn = 0x07070000 | (insn & 0xffff);
2925 }
2926 else if ((insn & 0xff000000) == 0x4d000000)
2927 {
2928 /* GD->LE transition.
2929 bas %r14,0(%rx,%r13) -> bc 0,0 */
2930 insn = 0x47000000;
2931 }
2932 else
2933 {
2934 /* GD->LE transition.
2935 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
2936 insn = 0xc0040000;
2937 bfd_put_16 (output_bfd, 0x0000,
2938 contents + rel->r_offset + 4);
2939 }
2940 }
2941 else
2942 {
2943 /* If basr is used in the pic case to invoke
2944 _tls_get_offset, something went wrong before. */
2945 if ((insn & 0xff000000) == 0x0d000000)
2946 invalid_tls_insn (input_bfd, input_section, rel);
2947
2948 if ((insn & 0xff000000) == 0x4d000000)
2949 {
2950 /* GD->IE transition.
2951 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2952 insn = 0x5822c000;
2953 }
2954 else
2955 {
2956 /* GD->IE transition.
2957 brasl %r14,__tls_get_addr@plt ->
2958 l %r2,0(%r2,%r12) ; bcr 0,0 */
2959 insn = 0x5822c000;
2960 bfd_put_16 (output_bfd, 0x0700,
2961 contents + rel->r_offset + 4);
2962 }
2963 }
2964 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2965 }
2966 else if (r_type == R_390_TLS_LDCALL)
2967 {
2968 if (!info->shared)
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 (insn & 0xff000000) != 0x0d000000)
2976 invalid_tls_insn (input_bfd, input_section, rel);
2977
2978 if ((insn & 0xff000000) == 0x0d000000)
2979 {
2980 /* LD->LE transition.
2981 basr rx, ry -> nopr r7 */
2982 insn = 0x07070000 | (insn & 0xffff);
2983 }
2984 else if ((insn & 0xff000000) == 0x4d000000)
2985 {
2986 /* LD->LE transition.
2987 bas %r14,0(%rx,%r13) -> bc 0,0 */
2988 insn = 0x47000000;
2989 }
2990 else
2991 {
2992 /* LD->LE transition.
2993 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
2994 insn = 0xc0040000;
2995 bfd_put_16 (output_bfd, 0x0000,
2996 contents + rel->r_offset + 4);
2997 }
2998 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2999 }
3000 }
3001 continue;
3002
3003 default:
3004 break;
3005 }
3006
3007 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3008 because such sections are not SEC_ALLOC and thus ld.so will
3009 not process them. */
3010 if (unresolved_reloc
3011 && !((input_section->flags & SEC_DEBUGGING) != 0
3012 && h->def_dynamic)
3013 && _bfd_elf_section_offset (output_bfd, info, input_section,
3014 rel->r_offset) != (bfd_vma) -1)
3015 (*_bfd_error_handler)
3016 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3017 input_bfd,
3018 input_section,
3019 (long) rel->r_offset,
3020 howto->name,
3021 h->root.root.string);
3022
3023 if (r_type == R_390_20
3024 || r_type == R_390_GOT20
3025 || r_type == R_390_GOTPLT20
3026 || r_type == R_390_TLS_GOTIE20)
3027 {
3028 relocation += rel->r_addend;
3029 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3030 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3031 contents, rel->r_offset,
3032 relocation, 0);
3033 }
3034 else
3035 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3036 contents, rel->r_offset,
3037 relocation, rel->r_addend);
3038
3039 if (r != bfd_reloc_ok)
3040 {
3041 const char *name;
3042
3043 if (h != NULL)
3044 name = h->root.root.string;
3045 else
3046 {
3047 name = bfd_elf_string_from_elf_section (input_bfd,
3048 symtab_hdr->sh_link,
3049 sym->st_name);
3050 if (name == NULL)
3051 return FALSE;
3052 if (*name == '\0')
3053 name = bfd_section_name (input_bfd, sec);
3054 }
3055
3056 if (r == bfd_reloc_overflow)
3057 {
3058
3059 if (! ((*info->callbacks->reloc_overflow)
3060 (info, (h ? &h->root : NULL), name, howto->name,
3061 (bfd_vma) 0, input_bfd, input_section,
3062 rel->r_offset)))
3063 return FALSE;
3064 }
3065 else
3066 {
3067 (*_bfd_error_handler)
3068 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3069 input_bfd, input_section,
3070 (long) rel->r_offset, name, (int) r);
3071 return FALSE;
3072 }
3073 }
3074 }
3075
3076 return TRUE;
3077 }
3078
3079 /* Finish up dynamic symbol handling. We set the contents of various
3080 dynamic sections here. */
3081
3082 static bfd_boolean
3083 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3084 bfd *output_bfd;
3085 struct bfd_link_info *info;
3086 struct elf_link_hash_entry *h;
3087 Elf_Internal_Sym *sym;
3088 {
3089 struct elf_s390_link_hash_table *htab;
3090
3091 htab = elf_s390_hash_table (info);
3092
3093 if (h->plt.offset != (bfd_vma) -1)
3094 {
3095 bfd_vma plt_index;
3096 bfd_vma got_offset;
3097 Elf_Internal_Rela rela;
3098 bfd_byte *loc;
3099 bfd_vma relative_offset;
3100
3101 /* This symbol has an entry in the procedure linkage table. Set
3102 it up. */
3103 if (h->dynindx == -1
3104 || htab->splt == NULL
3105 || htab->sgotplt == NULL
3106 || htab->srelplt == NULL)
3107 abort ();
3108
3109 /* Calc. index no.
3110 Current offset - size first entry / entry size. */
3111 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3112
3113 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3114 addr & GOT addr. */
3115 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3116
3117 /* S390 uses halfwords for relative branch calc! */
3118 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3119 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3120 /* If offset is > 32768, branch to a previous branch
3121 390 can only handle +-64 K jumps. */
3122 if ( -32768 > (int) relative_offset )
3123 relative_offset
3124 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3125
3126 /* Fill in the entry in the procedure linkage table. */
3127 if (!info->shared)
3128 {
3129 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3130 htab->splt->contents + h->plt.offset);
3131 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3132 htab->splt->contents + h->plt.offset + 4);
3133 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3134 htab->splt->contents + h->plt.offset + 8);
3135 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3136 htab->splt->contents + h->plt.offset + 12);
3137 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3138 htab->splt->contents + h->plt.offset + 16);
3139 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3140 htab->splt->contents + h->plt.offset + 20);
3141 bfd_put_32 (output_bfd,
3142 (htab->sgotplt->output_section->vma
3143 + htab->sgotplt->output_offset
3144 + got_offset),
3145 htab->splt->contents + h->plt.offset + 24);
3146 }
3147 else if (got_offset < 4096)
3148 {
3149 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3150 htab->splt->contents + h->plt.offset);
3151 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3152 htab->splt->contents + h->plt.offset + 4);
3153 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3154 htab->splt->contents + h->plt.offset + 8);
3155 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3156 htab->splt->contents + h->plt.offset + 12);
3157 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3158 htab->splt->contents + h->plt.offset + 16);
3159 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3160 htab->splt->contents + h->plt.offset + 20);
3161 bfd_put_32 (output_bfd, (bfd_vma) 0,
3162 htab->splt->contents + h->plt.offset + 24);
3163 }
3164 else if (got_offset < 32768)
3165 {
3166 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3167 htab->splt->contents + h->plt.offset);
3168 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3169 htab->splt->contents + h->plt.offset + 4);
3170 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3171 htab->splt->contents + h->plt.offset + 8);
3172 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3173 htab->splt->contents + h->plt.offset + 12);
3174 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_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, (bfd_vma) 0,
3179 htab->splt->contents + h->plt.offset + 24);
3180 }
3181 else
3182 {
3183 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3184 htab->splt->contents + h->plt.offset);
3185 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3186 htab->splt->contents + h->plt.offset + 4);
3187 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3188 htab->splt->contents + h->plt.offset + 8);
3189 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3190 htab->splt->contents + h->plt.offset + 12);
3191 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3192 htab->splt->contents + h->plt.offset + 16);
3193 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3194 htab->splt->contents + h->plt.offset + 20);
3195 bfd_put_32 (output_bfd, got_offset,
3196 htab->splt->contents + h->plt.offset + 24);
3197 }
3198 /* Insert offset into reloc. table here. */
3199 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3200 htab->splt->contents + h->plt.offset + 28);
3201
3202 /* Fill in the entry in the global offset table.
3203 Points to instruction after GOT offset. */
3204 bfd_put_32 (output_bfd,
3205 (htab->splt->output_section->vma
3206 + htab->splt->output_offset
3207 + h->plt.offset
3208 + 12),
3209 htab->sgotplt->contents + got_offset);
3210
3211 /* Fill in the entry in the .rela.plt section. */
3212 rela.r_offset = (htab->sgotplt->output_section->vma
3213 + htab->sgotplt->output_offset
3214 + got_offset);
3215 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3216 rela.r_addend = 0;
3217 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3218 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3219
3220 if (!h->def_regular)
3221 {
3222 /* Mark the symbol as undefined, rather than as defined in
3223 the .plt section. Leave the value alone. This is a clue
3224 for the dynamic linker, to make function pointer
3225 comparisons work between an application and shared
3226 library. */
3227 sym->st_shndx = SHN_UNDEF;
3228 }
3229 }
3230
3231 if (h->got.offset != (bfd_vma) -1
3232 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3233 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3234 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3235 {
3236 Elf_Internal_Rela rela;
3237 bfd_byte *loc;
3238
3239 /* This symbol has an entry in the global offset table. Set it
3240 up. */
3241
3242 if (htab->sgot == NULL || htab->srelgot == NULL)
3243 abort ();
3244
3245 rela.r_offset = (htab->sgot->output_section->vma
3246 + htab->sgot->output_offset
3247 + (h->got.offset &~ (bfd_vma) 1));
3248
3249 /* If this is a static link, or it is a -Bsymbolic link and the
3250 symbol is defined locally or was forced to be local because
3251 of a version file, we just want to emit a RELATIVE reloc.
3252 The entry in the global offset table will already have been
3253 initialized in the relocate_section function. */
3254 if (info->shared
3255 && SYMBOL_REFERENCES_LOCAL (info, h))
3256 {
3257 if (!h->def_regular)
3258 return FALSE;
3259 BFD_ASSERT((h->got.offset & 1) != 0);
3260 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3261 rela.r_addend = (h->root.u.def.value
3262 + h->root.u.def.section->output_section->vma
3263 + h->root.u.def.section->output_offset);
3264 }
3265 else
3266 {
3267 BFD_ASSERT((h->got.offset & 1) == 0);
3268 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3269 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3270 rela.r_addend = 0;
3271 }
3272
3273 loc = htab->srelgot->contents;
3274 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3275 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3276 }
3277
3278 if (h->needs_copy)
3279 {
3280 Elf_Internal_Rela rela;
3281 bfd_byte *loc;
3282
3283 /* This symbols needs a copy reloc. Set it up. */
3284
3285 if (h->dynindx == -1
3286 || (h->root.type != bfd_link_hash_defined
3287 && h->root.type != bfd_link_hash_defweak)
3288 || htab->srelbss == NULL)
3289 abort ();
3290
3291 rela.r_offset = (h->root.u.def.value
3292 + h->root.u.def.section->output_section->vma
3293 + h->root.u.def.section->output_offset);
3294 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3295 rela.r_addend = 0;
3296 loc = htab->srelbss->contents;
3297 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3298 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3299 }
3300
3301 /* Mark some specially defined symbols as absolute. */
3302 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3303 || h == htab->elf.hgot
3304 || h == htab->elf.hplt)
3305 sym->st_shndx = SHN_ABS;
3306
3307 return TRUE;
3308 }
3309
3310 /* Used to decide how to sort relocs in an optimal manner for the
3311 dynamic linker, before writing them out. */
3312
3313 static enum elf_reloc_type_class
3314 elf_s390_reloc_type_class (rela)
3315 const Elf_Internal_Rela *rela;
3316 {
3317 switch ((int) ELF32_R_TYPE (rela->r_info))
3318 {
3319 case R_390_RELATIVE:
3320 return reloc_class_relative;
3321 case R_390_JMP_SLOT:
3322 return reloc_class_plt;
3323 case R_390_COPY:
3324 return reloc_class_copy;
3325 default:
3326 return reloc_class_normal;
3327 }
3328 }
3329
3330 /* Finish up the dynamic sections. */
3331
3332 static bfd_boolean
3333 elf_s390_finish_dynamic_sections (output_bfd, info)
3334 bfd *output_bfd;
3335 struct bfd_link_info *info;
3336 {
3337 struct elf_s390_link_hash_table *htab;
3338 bfd *dynobj;
3339 asection *sdyn;
3340
3341 htab = elf_s390_hash_table (info);
3342 dynobj = htab->elf.dynobj;
3343 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3344
3345 if (htab->elf.dynamic_sections_created)
3346 {
3347 Elf32_External_Dyn *dyncon, *dynconend;
3348
3349 if (sdyn == NULL || htab->sgot == NULL)
3350 abort ();
3351
3352 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3353 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3354 for (; dyncon < dynconend; dyncon++)
3355 {
3356 Elf_Internal_Dyn dyn;
3357 asection *s;
3358
3359 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3360
3361 switch (dyn.d_tag)
3362 {
3363 default:
3364 continue;
3365
3366 case DT_PLTGOT:
3367 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3368 break;
3369
3370 case DT_JMPREL:
3371 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3372 break;
3373
3374 case DT_PLTRELSZ:
3375 s = htab->srelplt->output_section;
3376 dyn.d_un.d_val = s->size;
3377 break;
3378 }
3379
3380 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3381 }
3382
3383 /* Fill in the special first entry in the procedure linkage table. */
3384 if (htab->splt && htab->splt->size > 0)
3385 {
3386 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3387 if (info->shared)
3388 {
3389 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3390 htab->splt->contents );
3391 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3392 htab->splt->contents +4 );
3393 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3394 htab->splt->contents +8 );
3395 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3396 htab->splt->contents +12 );
3397 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3398 htab->splt->contents +16 );
3399 }
3400 else
3401 {
3402 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3403 htab->splt->contents );
3404 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3405 htab->splt->contents +4 );
3406 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3407 htab->splt->contents +8 );
3408 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3409 htab->splt->contents +12 );
3410 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3411 htab->splt->contents +16 );
3412 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3413 htab->splt->contents +20 );
3414 bfd_put_32 (output_bfd,
3415 htab->sgotplt->output_section->vma
3416 + htab->sgotplt->output_offset,
3417 htab->splt->contents + 24);
3418 }
3419 elf_section_data (htab->splt->output_section)
3420 ->this_hdr.sh_entsize = 4;
3421 }
3422
3423 }
3424
3425 if (htab->sgotplt)
3426 {
3427 /* Fill in the first three entries in the global offset table. */
3428 if (htab->sgotplt->size > 0)
3429 {
3430 bfd_put_32 (output_bfd,
3431 (sdyn == NULL ? (bfd_vma) 0
3432 : sdyn->output_section->vma + sdyn->output_offset),
3433 htab->sgotplt->contents);
3434 /* One entry for shared object struct ptr. */
3435 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3436 /* One entry for _dl_runtime_resolve. */
3437 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3438 }
3439
3440 elf_section_data (htab->sgotplt->output_section)
3441 ->this_hdr.sh_entsize = 4;
3442 }
3443 return TRUE;
3444 }
3445
3446 static bfd_boolean
3447 elf_s390_grok_prstatus (abfd, note)
3448 bfd * abfd;
3449 Elf_Internal_Note * note;
3450 {
3451 int offset;
3452 unsigned int size;
3453
3454 switch (note->descsz)
3455 {
3456 default:
3457 return FALSE;
3458
3459 case 224: /* S/390 Linux. */
3460 /* pr_cursig */
3461 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3462
3463 /* pr_pid */
3464 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
3465
3466 /* pr_reg */
3467 offset = 72;
3468 size = 144;
3469 break;
3470 }
3471
3472 /* Make a ".reg/999" section. */
3473 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3474 size, note->descpos + offset);
3475 }
3476
3477 /* Return address for Ith PLT stub in section PLT, for relocation REL
3478 or (bfd_vma) -1 if it should not be included. */
3479
3480 static bfd_vma
3481 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3482 const arelent *rel ATTRIBUTE_UNUSED)
3483 {
3484 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3485 }
3486
3487 static bfd_boolean
3488 elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3489 {
3490 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3491 return TRUE;
3492 }
3493
3494
3495 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3496 #define TARGET_BIG_NAME "elf32-s390"
3497 #define ELF_ARCH bfd_arch_s390
3498 #define ELF_TARGET_ID S390_ELF_DATA
3499 #define ELF_MACHINE_CODE EM_S390
3500 #define ELF_MACHINE_ALT1 EM_S390_OLD
3501 #define ELF_MAXPAGESIZE 0x1000
3502
3503 #define elf_backend_can_gc_sections 1
3504 #define elf_backend_can_refcount 1
3505 #define elf_backend_want_got_plt 1
3506 #define elf_backend_plt_readonly 1
3507 #define elf_backend_want_plt_sym 0
3508 #define elf_backend_got_header_size 12
3509 #define elf_backend_rela_normal 1
3510
3511 #define elf_info_to_howto elf_s390_info_to_howto
3512
3513 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3514 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3515 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3516 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3517
3518 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
3519
3520 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3521 #define elf_backend_check_relocs elf_s390_check_relocs
3522 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3523 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3524 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3525 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3526 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3527 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3528 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3529 #define elf_backend_relocate_section elf_s390_relocate_section
3530 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3531 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3532 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3533 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3534 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3535
3536 #define bfd_elf32_mkobject elf_s390_mkobject
3537 #define elf_backend_object_p elf_s390_object_p
3538
3539 #include "elf32-target.h"
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