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2008-02-20 Paul Brook <paul@codesourcery.com>
[binutils.git] / bfd / elf32-s390.c
blob7d6337289ce5ff4ef6ced084d43dbc9233898445
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28
29 static reloc_howto_type *elf_s390_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf_s390_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf_s390_is_local_label_name
34 PARAMS ((bfd *, const char *));
35 static struct bfd_hash_entry *link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
37 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
38 PARAMS ((bfd *));
39 static bfd_boolean create_got_section
40 PARAMS((bfd *, struct bfd_link_info *));
41 static bfd_boolean elf_s390_create_dynamic_sections
42 PARAMS((bfd *, struct bfd_link_info *));
43 static void elf_s390_copy_indirect_symbol
44 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
45 struct elf_link_hash_entry *));
46 static bfd_boolean elf_s390_check_relocs
47 PARAMS ((bfd *, struct bfd_link_info *, asection *,
48 const Elf_Internal_Rela *));
49 struct elf_s390_link_hash_entry;
50 static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry *));
52 static bfd_boolean elf_s390_adjust_dynamic_symbol
53 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
54 static bfd_boolean allocate_dynrelocs
55 PARAMS ((struct elf_link_hash_entry *, PTR));
56 static bfd_boolean readonly_dynrelocs
57 PARAMS ((struct elf_link_hash_entry *, PTR));
58 static bfd_boolean elf_s390_size_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf_s390_relocate_section
61 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
62 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
63 static bfd_boolean elf_s390_finish_dynamic_symbol
64 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
65 Elf_Internal_Sym *));
66 static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela *));
68 static bfd_boolean elf_s390_finish_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static bfd_boolean elf_s390_object_p
71 PARAMS ((bfd *));
72 static bfd_boolean elf_s390_grok_prstatus
73 PARAMS ((bfd *, Elf_Internal_Note *));
74 static int elf_s390_tls_transition
75 PARAMS ((struct bfd_link_info *, int, int));
76 static bfd_reloc_status_type s390_tls_reloc
77 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
78 static bfd_vma dtpoff_base
79 PARAMS ((struct bfd_link_info *));
80 static bfd_vma tpoff
81 PARAMS ((struct bfd_link_info *, bfd_vma));
82 static void invalid_tls_insn
83 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
84 static bfd_reloc_status_type s390_elf_ldisp_reloc
85 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
86
87 #include "elf/s390.h"
88
89 /* The relocation "howto" table. */
90
91 static reloc_howto_type elf_howto_table[] =
92 {
93 HOWTO (R_390_NONE, /* type */
94 0, /* rightshift */
95 0, /* size (0 = byte, 1 = short, 2 = long) */
96 0, /* bitsize */
97 FALSE, /* pc_relative */
98 0, /* bitpos */
99 complain_overflow_dont, /* complain_on_overflow */
100 bfd_elf_generic_reloc, /* special_function */
101 "R_390_NONE", /* name */
102 FALSE, /* partial_inplace */
103 0, /* src_mask */
104 0, /* dst_mask */
105 FALSE), /* pcrel_offset */
106
107 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
109 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
110 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
111 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
113 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
115 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
117 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
119 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
123 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
125 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
129 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
131 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
133 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
135 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
136 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
137 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
139 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
141 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
143 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
145 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
147 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
149 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
150 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
151 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
152 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
153 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
155 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
157 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
158 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
159 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
160 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
162 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
164 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
165 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
167 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
171 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
172 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
173 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
174 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
175 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
176 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
177 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
178 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
180 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
181 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
182 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
183 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
184 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
185 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
186 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
187 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
188 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
189 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
190 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
191 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
192 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
193 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
194 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
196 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
197 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
198 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
199 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
200 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
201 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
202 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
203 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
204 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
206 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
207 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
208 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
209 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
210 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
211 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
212 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
213 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
214 };
215
216 /* GNU extension to record C++ vtable hierarchy. */
217 static reloc_howto_type elf32_s390_vtinherit_howto =
218 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
219 static reloc_howto_type elf32_s390_vtentry_howto =
220 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
221
222 static reloc_howto_type *
223 elf_s390_reloc_type_lookup (abfd, code)
224 bfd *abfd ATTRIBUTE_UNUSED;
225 bfd_reloc_code_real_type code;
226 {
227 switch (code)
228 {
229 case BFD_RELOC_NONE:
230 return &elf_howto_table[(int) R_390_NONE];
231 case BFD_RELOC_8:
232 return &elf_howto_table[(int) R_390_8];
233 case BFD_RELOC_390_12:
234 return &elf_howto_table[(int) R_390_12];
235 case BFD_RELOC_16:
236 return &elf_howto_table[(int) R_390_16];
237 case BFD_RELOC_32:
238 return &elf_howto_table[(int) R_390_32];
239 case BFD_RELOC_CTOR:
240 return &elf_howto_table[(int) R_390_32];
241 case BFD_RELOC_32_PCREL:
242 return &elf_howto_table[(int) R_390_PC32];
243 case BFD_RELOC_390_GOT12:
244 return &elf_howto_table[(int) R_390_GOT12];
245 case BFD_RELOC_32_GOT_PCREL:
246 return &elf_howto_table[(int) R_390_GOT32];
247 case BFD_RELOC_390_PLT32:
248 return &elf_howto_table[(int) R_390_PLT32];
249 case BFD_RELOC_390_COPY:
250 return &elf_howto_table[(int) R_390_COPY];
251 case BFD_RELOC_390_GLOB_DAT:
252 return &elf_howto_table[(int) R_390_GLOB_DAT];
253 case BFD_RELOC_390_JMP_SLOT:
254 return &elf_howto_table[(int) R_390_JMP_SLOT];
255 case BFD_RELOC_390_RELATIVE:
256 return &elf_howto_table[(int) R_390_RELATIVE];
257 case BFD_RELOC_32_GOTOFF:
258 return &elf_howto_table[(int) R_390_GOTOFF32];
259 case BFD_RELOC_390_GOTPC:
260 return &elf_howto_table[(int) R_390_GOTPC];
261 case BFD_RELOC_390_GOT16:
262 return &elf_howto_table[(int) R_390_GOT16];
263 case BFD_RELOC_16_PCREL:
264 return &elf_howto_table[(int) R_390_PC16];
265 case BFD_RELOC_390_PC16DBL:
266 return &elf_howto_table[(int) R_390_PC16DBL];
267 case BFD_RELOC_390_PLT16DBL:
268 return &elf_howto_table[(int) R_390_PLT16DBL];
269 case BFD_RELOC_390_PC32DBL:
270 return &elf_howto_table[(int) R_390_PC32DBL];
271 case BFD_RELOC_390_PLT32DBL:
272 return &elf_howto_table[(int) R_390_PLT32DBL];
273 case BFD_RELOC_390_GOTPCDBL:
274 return &elf_howto_table[(int) R_390_GOTPCDBL];
275 case BFD_RELOC_390_GOTENT:
276 return &elf_howto_table[(int) R_390_GOTENT];
277 case BFD_RELOC_16_GOTOFF:
278 return &elf_howto_table[(int) R_390_GOTOFF16];
279 case BFD_RELOC_390_GOTPLT12:
280 return &elf_howto_table[(int) R_390_GOTPLT12];
281 case BFD_RELOC_390_GOTPLT16:
282 return &elf_howto_table[(int) R_390_GOTPLT16];
283 case BFD_RELOC_390_GOTPLT32:
284 return &elf_howto_table[(int) R_390_GOTPLT32];
285 case BFD_RELOC_390_GOTPLTENT:
286 return &elf_howto_table[(int) R_390_GOTPLTENT];
287 case BFD_RELOC_390_PLTOFF16:
288 return &elf_howto_table[(int) R_390_PLTOFF16];
289 case BFD_RELOC_390_PLTOFF32:
290 return &elf_howto_table[(int) R_390_PLTOFF32];
291 case BFD_RELOC_390_TLS_LOAD:
292 return &elf_howto_table[(int) R_390_TLS_LOAD];
293 case BFD_RELOC_390_TLS_GDCALL:
294 return &elf_howto_table[(int) R_390_TLS_GDCALL];
295 case BFD_RELOC_390_TLS_LDCALL:
296 return &elf_howto_table[(int) R_390_TLS_LDCALL];
297 case BFD_RELOC_390_TLS_GD32:
298 return &elf_howto_table[(int) R_390_TLS_GD32];
299 case BFD_RELOC_390_TLS_GOTIE12:
300 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
301 case BFD_RELOC_390_TLS_GOTIE32:
302 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
303 case BFD_RELOC_390_TLS_LDM32:
304 return &elf_howto_table[(int) R_390_TLS_LDM32];
305 case BFD_RELOC_390_TLS_IE32:
306 return &elf_howto_table[(int) R_390_TLS_IE32];
307 case BFD_RELOC_390_TLS_IEENT:
308 return &elf_howto_table[(int) R_390_TLS_IEENT];
309 case BFD_RELOC_390_TLS_LE32:
310 return &elf_howto_table[(int) R_390_TLS_LE32];
311 case BFD_RELOC_390_TLS_LDO32:
312 return &elf_howto_table[(int) R_390_TLS_LDO32];
313 case BFD_RELOC_390_TLS_DTPMOD:
314 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
315 case BFD_RELOC_390_TLS_DTPOFF:
316 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
317 case BFD_RELOC_390_TLS_TPOFF:
318 return &elf_howto_table[(int) R_390_TLS_TPOFF];
319 case BFD_RELOC_390_20:
320 return &elf_howto_table[(int) R_390_20];
321 case BFD_RELOC_390_GOT20:
322 return &elf_howto_table[(int) R_390_GOT20];
323 case BFD_RELOC_390_GOTPLT20:
324 return &elf_howto_table[(int) R_390_GOTPLT20];
325 case BFD_RELOC_390_TLS_GOTIE20:
326 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
327 case BFD_RELOC_VTABLE_INHERIT:
328 return &elf32_s390_vtinherit_howto;
329 case BFD_RELOC_VTABLE_ENTRY:
330 return &elf32_s390_vtentry_howto;
331 default:
332 break;
333 }
334 return 0;
335 }
336
337 static reloc_howto_type *
338 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
339 const char *r_name)
340 {
341 unsigned int i;
342
343 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
344 if (elf_howto_table[i].name != NULL
345 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
346 return &elf_howto_table[i];
347
348 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
349 return &elf32_s390_vtinherit_howto;
350 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
351 return &elf32_s390_vtentry_howto;
352
353 return NULL;
354 }
355
356 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
357 and elf32-s390.c has its own copy. */
358
359 static void
360 elf_s390_info_to_howto (abfd, cache_ptr, dst)
361 bfd *abfd ATTRIBUTE_UNUSED;
362 arelent *cache_ptr;
363 Elf_Internal_Rela *dst;
364 {
365 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
366 switch (r_type)
367 {
368 case R_390_GNU_VTINHERIT:
369 cache_ptr->howto = &elf32_s390_vtinherit_howto;
370 break;
371
372 case R_390_GNU_VTENTRY:
373 cache_ptr->howto = &elf32_s390_vtentry_howto;
374 break;
375
376 default:
377 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
378 {
379 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
380 abfd, (int) r_type);
381 r_type = R_390_NONE;
382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
384 }
385 }
386
387 /* A relocation function which doesn't do anything. */
388 static bfd_reloc_status_type
389 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
390 output_bfd, error_message)
391 bfd *abfd ATTRIBUTE_UNUSED;
392 arelent *reloc_entry;
393 asymbol *symbol ATTRIBUTE_UNUSED;
394 PTR data ATTRIBUTE_UNUSED;
395 asection *input_section;
396 bfd *output_bfd;
397 char **error_message ATTRIBUTE_UNUSED;
398 {
399 if (output_bfd)
400 reloc_entry->address += input_section->output_offset;
401 return bfd_reloc_ok;
402 }
403
404 /* Handle the large displacement relocs. */
405 static bfd_reloc_status_type
406 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
407 output_bfd, error_message)
408 bfd *abfd ATTRIBUTE_UNUSED;
409 arelent *reloc_entry;
410 asymbol *symbol;
411 PTR data ATTRIBUTE_UNUSED;
412 asection *input_section;
413 bfd *output_bfd;
414 char **error_message ATTRIBUTE_UNUSED;
415 {
416 reloc_howto_type *howto = reloc_entry->howto;
417 bfd_vma relocation;
418 bfd_vma insn;
419
420 if (output_bfd != (bfd *) NULL
421 && (symbol->flags & BSF_SECTION_SYM) == 0
422 && (! howto->partial_inplace
423 || reloc_entry->addend == 0))
424 {
425 reloc_entry->address += input_section->output_offset;
426 return bfd_reloc_ok;
427 }
428
429 if (output_bfd != NULL)
430 return bfd_reloc_continue;
431
432 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
433 return bfd_reloc_outofrange;
434
435 relocation = (symbol->value
436 + symbol->section->output_section->vma
437 + symbol->section->output_offset);
438 relocation += reloc_entry->addend;
439 if (howto->pc_relative)
440 {
441 relocation -= (input_section->output_section->vma
442 + input_section->output_offset);
443 relocation -= reloc_entry->address;
444 }
445
446 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
447 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
448 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
449
450 if ((bfd_signed_vma) relocation < - 0x80000
451 || (bfd_signed_vma) relocation > 0x7ffff)
452 return bfd_reloc_overflow;
453 else
454 return bfd_reloc_ok;
455 }
456
457 static bfd_boolean
458 elf_s390_is_local_label_name (abfd, name)
459 bfd *abfd;
460 const char *name;
461 {
462 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
463 return TRUE;
464
465 return _bfd_elf_is_local_label_name (abfd, name);
466 }
467
468 /* Functions for the 390 ELF linker. */
469
470 /* The name of the dynamic interpreter. This is put in the .interp
471 section. */
472
473 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
474
475 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
476 copying dynamic variables from a shared lib into an app's dynbss
477 section, and instead use a dynamic relocation to point into the
478 shared lib. */
479 #define ELIMINATE_COPY_RELOCS 1
480
481 /* The size in bytes of the first entry in the procedure linkage table. */
482 #define PLT_FIRST_ENTRY_SIZE 32
483 /* The size in bytes of an entry in the procedure linkage table. */
484 #define PLT_ENTRY_SIZE 32
485
486 #define GOT_ENTRY_SIZE 4
487
488 /* The first three entries in a procedure linkage table are reserved,
489 and the initial contents are unimportant (we zero them out).
490 Subsequent entries look like this. See the SVR4 ABI 386
491 supplement to see how this works. */
492
493 /* For the s390, simple addr offset can only be 0 - 4096.
494 To use the full 2 GB address space, several instructions
495 are needed to load an address in a register and execute
496 a branch( or just saving the address)
497
498 Furthermore, only r 0 and 1 are free to use!!! */
499
500 /* The first 3 words in the GOT are then reserved.
501 Word 0 is the address of the dynamic table.
502 Word 1 is a pointer to a structure describing the object
503 Word 2 is used to point to the loader entry address.
504
505 The code for position independent PLT entries looks like this:
506
507 r12 holds addr of the current GOT at entry to the PLT
508
509 The GOT holds the address in the PLT to be executed.
510 The loader then gets:
511 24(15) = Pointer to the structure describing the object.
512 28(15) = Offset in symbol table
513
514 The loader must then find the module where the function is
515 and insert the address in the GOT.
516
517 Note: 390 can only address +- 64 K relative.
518 We check if offset > 65536, then make a relative branch -64xxx
519 back to a previous defined branch
520
521 PLT1: BASR 1,0 # 2 bytes
522 L 1,22(1) # 4 bytes Load offset in GOT in r 1
523 L 1,(1,12) # 4 bytes Load address from GOT in r1
524 BCR 15,1 # 2 bytes Jump to address
525 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
526 L 1,14(1) # 4 bytes Load offset in symol table in r1
527 BRC 15,-x # 4 bytes Jump to start of PLT
528 .word 0 # 2 bytes filler
529 .long ? # 4 bytes offset in GOT
530 .long ? # 4 bytes offset into symbol table
531
532 This was the general case. There are two additional, optimizes PLT
533 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
534 First the one for GOT offsets < 4096:
535
536 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
537 BCR 15,1 # 2 bytes Jump to address
538 .word 0,0,0 # 6 bytes filler
539 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
540 L 1,14(1) # 4 bytes Load offset in symbol table in r1
541 BRC 15,-x # 4 bytes Jump to start of PLT
542 .word 0,0,0 # 6 bytes filler
543 .long ? # 4 bytes offset into symbol table
544
545 Second the one for GOT offsets < 32768:
546
547 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
548 L 1,(1,12) # 4 bytes Load address from GOT to r1
549 BCR 15,1 # 2 bytes Jump to address
550 .word 0 # 2 bytes filler
551 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
552 L 1,14(1) # 4 bytes Load offset in symbol table in r1
553 BRC 15,-x # 4 bytes Jump to start of PLT
554 .word 0,0,0 # 6 bytes filler
555 .long ? # 4 bytes offset into symbol table
556
557 Total = 32 bytes per PLT entry
558
559 The code for static build PLT entries looks like this:
560
561 PLT1: BASR 1,0 # 2 bytes
562 L 1,22(1) # 4 bytes Load address of GOT entry
563 L 1,0(0,1) # 4 bytes Load address from GOT in r1
564 BCR 15,1 # 2 bytes Jump to address
565 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
566 L 1,14(1) # 4 bytes Load offset in symbol table in r1
567 BRC 15,-x # 4 bytes Jump to start of PLT
568 .word 0 # 2 bytes filler
569 .long ? # 4 bytes address of GOT entry
570 .long ? # 4 bytes offset into symbol table */
571
572 #define PLT_PIC_ENTRY_WORD0 0x0d105810
573 #define PLT_PIC_ENTRY_WORD1 0x10165811
574 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
575 #define PLT_PIC_ENTRY_WORD3 0x0d105810
576 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
577
578 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
579 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
580 #define PLT_PIC12_ENTRY_WORD2 0x00000000
581 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
582 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
583
584 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
585 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
586 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
587 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
588 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
589
590 #define PLT_ENTRY_WORD0 0x0d105810
591 #define PLT_ENTRY_WORD1 0x10165810
592 #define PLT_ENTRY_WORD2 0x100007f1
593 #define PLT_ENTRY_WORD3 0x0d105810
594 #define PLT_ENTRY_WORD4 0x100ea7f4
595
596 /* The first PLT entry pushes the offset into the symbol table
597 from R1 onto the stack at 8(15) and the loader object info
598 at 12(15), loads the loader address in R1 and jumps to it. */
599
600 /* The first entry in the PLT for PIC code:
601
602 PLT0:
603 ST 1,28(15) # R1 has offset into symbol table
604 L 1,4(12) # Get loader ino(object struct address)
605 ST 1,24(15) # Store address
606 L 1,8(12) # Entry address of loader in R1
607 BR 1 # Jump to loader
608
609 The first entry in the PLT for static code:
610
611 PLT0:
612 ST 1,28(15) # R1 has offset into symbol table
613 BASR 1,0
614 L 1,18(0,1) # Get address of GOT
615 MVC 24(4,15),4(1) # Move loader ino to stack
616 L 1,8(1) # Get address of loader
617 BR 1 # Jump to loader
618 .word 0 # filler
619 .long got # address of GOT */
620
621 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
622 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
623 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
624 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
625 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
626
627 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
628 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
629 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
630 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
631 #define PLT_FIRST_ENTRY_WORD4 0x58101008
632 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
633
634 /* The s390 linker needs to keep track of the number of relocs that it
635 decides to copy as dynamic relocs in check_relocs for each symbol.
636 This is so that it can later discard them if they are found to be
637 unnecessary. We store the information in a field extending the
638 regular ELF linker hash table. */
639
640 struct elf_s390_dyn_relocs
641 {
642 struct elf_s390_dyn_relocs *next;
643
644 /* The input section of the reloc. */
645 asection *sec;
646
647 /* Total number of relocs copied for the input section. */
648 bfd_size_type count;
649
650 /* Number of pc-relative relocs copied for the input section. */
651 bfd_size_type pc_count;
652 };
653
654 /* s390 ELF linker hash entry. */
655
656 struct elf_s390_link_hash_entry
657 {
658 struct elf_link_hash_entry elf;
659
660 /* Track dynamic relocs copied for this symbol. */
661 struct elf_s390_dyn_relocs *dyn_relocs;
662
663 /* Number of GOTPLT references for a function. */
664 bfd_signed_vma gotplt_refcount;
665
666 #define GOT_UNKNOWN 0
667 #define GOT_NORMAL 1
668 #define GOT_TLS_GD 2
669 #define GOT_TLS_IE 3
670 #define GOT_TLS_IE_NLT 4
671 unsigned char tls_type;
672 };
673
674 #define elf_s390_hash_entry(ent) \
675 ((struct elf_s390_link_hash_entry *)(ent))
676
677 /* 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_TDATA)
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_TDATA);
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 to section mapping cache. */
734 struct sym_sec_cache sym_sec;
735 };
736
737 /* Get the s390 ELF linker hash table from a link_info structure. */
738
739 #define elf_s390_hash_table(p) \
740 ((struct elf_s390_link_hash_table *) ((p)->hash))
741
742 /* Create an entry in an s390 ELF linker hash table. */
743
744 static struct bfd_hash_entry *
745 link_hash_newfunc (entry, table, string)
746 struct bfd_hash_entry *entry;
747 struct bfd_hash_table *table;
748 const char *string;
749 {
750 /* Allocate the structure if it has not already been allocated by a
751 subclass. */
752 if (entry == NULL)
753 {
754 entry = bfd_hash_allocate (table,
755 sizeof (struct elf_s390_link_hash_entry));
756 if (entry == NULL)
757 return entry;
758 }
759
760 /* Call the allocation method of the superclass. */
761 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
762 if (entry != NULL)
763 {
764 struct elf_s390_link_hash_entry *eh;
765
766 eh = (struct elf_s390_link_hash_entry *) entry;
767 eh->dyn_relocs = NULL;
768 eh->gotplt_refcount = 0;
769 eh->tls_type = GOT_UNKNOWN;
770 }
771
772 return entry;
773 }
774
775 /* Create an s390 ELF linker hash table. */
776
777 static struct bfd_link_hash_table *
778 elf_s390_link_hash_table_create (abfd)
779 bfd *abfd;
780 {
781 struct elf_s390_link_hash_table *ret;
782 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
783
784 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
785 if (ret == NULL)
786 return NULL;
787
788 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
789 sizeof (struct elf_s390_link_hash_entry)))
790 {
791 free (ret);
792 return NULL;
793 }
794
795 ret->sgot = NULL;
796 ret->sgotplt = NULL;
797 ret->srelgot = NULL;
798 ret->splt = NULL;
799 ret->srelplt = NULL;
800 ret->sdynbss = NULL;
801 ret->srelbss = NULL;
802 ret->tls_ldm_got.refcount = 0;
803 ret->sym_sec.abfd = NULL;
804
805 return &ret->elf.root;
806 }
807
808 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
809 shortcuts to them in our hash table. */
810
811 static bfd_boolean
812 create_got_section (dynobj, info)
813 bfd *dynobj;
814 struct bfd_link_info *info;
815 {
816 struct elf_s390_link_hash_table *htab;
817
818 if (! _bfd_elf_create_got_section (dynobj, info))
819 return FALSE;
820
821 htab = elf_s390_hash_table (info);
822 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
823 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
824 if (!htab->sgot || !htab->sgotplt)
825 abort ();
826
827 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
828 (SEC_ALLOC | SEC_LOAD
829 | SEC_HAS_CONTENTS
830 | SEC_IN_MEMORY
831 | SEC_LINKER_CREATED
832 | SEC_READONLY));
833 if (htab->srelgot == NULL
834 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
835 return FALSE;
836 return TRUE;
837 }
838
839 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
840 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
841 hash table. */
842
843 static bfd_boolean
844 elf_s390_create_dynamic_sections (dynobj, info)
845 bfd *dynobj;
846 struct bfd_link_info *info;
847 {
848 struct elf_s390_link_hash_table *htab;
849
850 htab = elf_s390_hash_table (info);
851 if (!htab->sgot && !create_got_section (dynobj, info))
852 return FALSE;
853
854 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
855 return FALSE;
856
857 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
858 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
859 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
860 if (!info->shared)
861 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
862
863 if (!htab->splt || !htab->srelplt || !htab->sdynbss
864 || (!info->shared && !htab->srelbss))
865 abort ();
866
867 return TRUE;
868 }
869
870 /* Copy the extra info we tack onto an elf_link_hash_entry. */
871
872 static void
873 elf_s390_copy_indirect_symbol (info, dir, ind)
874 struct bfd_link_info *info;
875 struct elf_link_hash_entry *dir, *ind;
876 {
877 struct elf_s390_link_hash_entry *edir, *eind;
878
879 edir = (struct elf_s390_link_hash_entry *) dir;
880 eind = (struct elf_s390_link_hash_entry *) ind;
881
882 if (eind->dyn_relocs != NULL)
883 {
884 if (edir->dyn_relocs != NULL)
885 {
886 struct elf_s390_dyn_relocs **pp;
887 struct elf_s390_dyn_relocs *p;
888
889 /* Add reloc counts against the indirect sym to the direct sym
890 list. Merge any entries against the same section. */
891 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
892 {
893 struct elf_s390_dyn_relocs *q;
894
895 for (q = edir->dyn_relocs; q != NULL; q = q->next)
896 if (q->sec == p->sec)
897 {
898 q->pc_count += p->pc_count;
899 q->count += p->count;
900 *pp = p->next;
901 break;
902 }
903 if (q == NULL)
904 pp = &p->next;
905 }
906 *pp = edir->dyn_relocs;
907 }
908
909 edir->dyn_relocs = eind->dyn_relocs;
910 eind->dyn_relocs = NULL;
911 }
912
913 if (ind->root.type == bfd_link_hash_indirect
914 && dir->got.refcount <= 0)
915 {
916 edir->tls_type = eind->tls_type;
917 eind->tls_type = GOT_UNKNOWN;
918 }
919
920 if (ELIMINATE_COPY_RELOCS
921 && ind->root.type != bfd_link_hash_indirect
922 && dir->dynamic_adjusted)
923 {
924 /* If called to transfer flags for a weakdef during processing
925 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
926 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
927 dir->ref_dynamic |= ind->ref_dynamic;
928 dir->ref_regular |= ind->ref_regular;
929 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
930 dir->needs_plt |= ind->needs_plt;
931 }
932 else
933 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
934 }
935
936 static int
937 elf_s390_tls_transition (info, r_type, is_local)
938 struct bfd_link_info *info;
939 int r_type;
940 int is_local;
941 {
942 if (info->shared)
943 return r_type;
944
945 switch (r_type)
946 {
947 case R_390_TLS_GD32:
948 case R_390_TLS_IE32:
949 if (is_local)
950 return R_390_TLS_LE32;
951 return R_390_TLS_IE32;
952 case R_390_TLS_GOTIE32:
953 if (is_local)
954 return R_390_TLS_LE32;
955 return R_390_TLS_GOTIE32;
956 case R_390_TLS_LDM32:
957 return R_390_TLS_LE32;
958 }
959
960 return r_type;
961 }
962
963 /* Look through the relocs for a section during the first phase, and
964 allocate space in the global offset table or procedure linkage
965 table. */
966
967 static bfd_boolean
968 elf_s390_check_relocs (abfd, info, sec, relocs)
969 bfd *abfd;
970 struct bfd_link_info *info;
971 asection *sec;
972 const Elf_Internal_Rela *relocs;
973 {
974 struct elf_s390_link_hash_table *htab;
975 Elf_Internal_Shdr *symtab_hdr;
976 struct elf_link_hash_entry **sym_hashes;
977 const Elf_Internal_Rela *rel;
978 const Elf_Internal_Rela *rel_end;
979 asection *sreloc;
980 bfd_signed_vma *local_got_refcounts;
981 int tls_type, old_tls_type;
982
983 if (info->relocatable)
984 return TRUE;
985
986 BFD_ASSERT (is_s390_elf (abfd));
987
988 htab = elf_s390_hash_table (info);
989 symtab_hdr = &elf_symtab_hdr (abfd);
990 sym_hashes = elf_sym_hashes (abfd);
991 local_got_refcounts = elf_local_got_refcounts (abfd);
992
993 sreloc = NULL;
994
995 rel_end = relocs + sec->reloc_count;
996 for (rel = relocs; rel < rel_end; rel++)
997 {
998 unsigned int r_type;
999 unsigned long r_symndx;
1000 struct elf_link_hash_entry *h;
1001
1002 r_symndx = ELF32_R_SYM (rel->r_info);
1003
1004 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1005 {
1006 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1007 abfd, r_symndx);
1008 return FALSE;
1009 }
1010
1011 if (r_symndx < symtab_hdr->sh_info)
1012 h = NULL;
1013 else
1014 {
1015 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1016 while (h->root.type == bfd_link_hash_indirect
1017 || h->root.type == bfd_link_hash_warning)
1018 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1019 }
1020
1021 /* Create got section and local_got_refcounts array if they
1022 are needed. */
1023 r_type = elf_s390_tls_transition (info,
1024 ELF32_R_TYPE (rel->r_info),
1025 h == NULL);
1026 switch (r_type)
1027 {
1028 case R_390_GOT12:
1029 case R_390_GOT16:
1030 case R_390_GOT20:
1031 case R_390_GOT32:
1032 case R_390_GOTENT:
1033 case R_390_GOTPLT12:
1034 case R_390_GOTPLT16:
1035 case R_390_GOTPLT20:
1036 case R_390_GOTPLT32:
1037 case R_390_GOTPLTENT:
1038 case R_390_TLS_GD32:
1039 case R_390_TLS_GOTIE12:
1040 case R_390_TLS_GOTIE20:
1041 case R_390_TLS_GOTIE32:
1042 case R_390_TLS_IEENT:
1043 case R_390_TLS_IE32:
1044 case R_390_TLS_LDM32:
1045 if (h == NULL
1046 && local_got_refcounts == NULL)
1047 {
1048 bfd_size_type size;
1049
1050 size = symtab_hdr->sh_info;
1051 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1052 local_got_refcounts = ((bfd_signed_vma *)
1053 bfd_zalloc (abfd, size));
1054 if (local_got_refcounts == NULL)
1055 return FALSE;
1056 elf_local_got_refcounts (abfd) = local_got_refcounts;
1057 elf_s390_local_got_tls_type (abfd)
1058 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1059 }
1060 /* Fall through. */
1061 case R_390_GOTOFF16:
1062 case R_390_GOTOFF32:
1063 case R_390_GOTPC:
1064 case R_390_GOTPCDBL:
1065 if (htab->sgot == NULL)
1066 {
1067 if (htab->elf.dynobj == NULL)
1068 htab->elf.dynobj = abfd;
1069 if (!create_got_section (htab->elf.dynobj, info))
1070 return FALSE;
1071 }
1072 }
1073
1074 switch (r_type)
1075 {
1076 case R_390_GOTOFF16:
1077 case R_390_GOTOFF32:
1078 case R_390_GOTPC:
1079 case R_390_GOTPCDBL:
1080 /* Got is created, nothing to be done. */
1081 break;
1082
1083 case R_390_PLT16DBL:
1084 case R_390_PLT32DBL:
1085 case R_390_PLT32:
1086 case R_390_PLTOFF16:
1087 case R_390_PLTOFF32:
1088 /* This symbol requires a procedure linkage table entry. We
1089 actually build the entry in adjust_dynamic_symbol,
1090 because this might be a case of linking PIC code which is
1091 never referenced by a dynamic object, in which case we
1092 don't need to generate a procedure linkage table entry
1093 after all. */
1094
1095 /* If this is a local symbol, we resolve it directly without
1096 creating a procedure linkage table entry. */
1097 if (h != NULL)
1098 {
1099 h->needs_plt = 1;
1100 h->plt.refcount += 1;
1101 }
1102 break;
1103
1104 case R_390_GOTPLT12:
1105 case R_390_GOTPLT16:
1106 case R_390_GOTPLT20:
1107 case R_390_GOTPLT32:
1108 case R_390_GOTPLTENT:
1109 /* This symbol requires either a procedure linkage table entry
1110 or an entry in the local got. We actually build the entry
1111 in adjust_dynamic_symbol because whether this is really a
1112 global reference can change and with it the fact if we have
1113 to create a plt entry or a local got entry. To be able to
1114 make a once global symbol a local one we have to keep track
1115 of the number of gotplt references that exist for this
1116 symbol. */
1117 if (h != NULL)
1118 {
1119 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1120 h->needs_plt = 1;
1121 h->plt.refcount += 1;
1122 }
1123 else
1124 local_got_refcounts[r_symndx] += 1;
1125 break;
1126
1127 case R_390_TLS_LDM32:
1128 htab->tls_ldm_got.refcount += 1;
1129 break;
1130
1131 case R_390_TLS_IE32:
1132 case R_390_TLS_GOTIE12:
1133 case R_390_TLS_GOTIE20:
1134 case R_390_TLS_GOTIE32:
1135 case R_390_TLS_IEENT:
1136 if (info->shared)
1137 info->flags |= DF_STATIC_TLS;
1138 /* Fall through. */
1139
1140 case R_390_GOT12:
1141 case R_390_GOT16:
1142 case R_390_GOT20:
1143 case R_390_GOT32:
1144 case R_390_GOTENT:
1145 case R_390_TLS_GD32:
1146 /* This symbol requires a global offset table entry. */
1147 switch (r_type)
1148 {
1149 default:
1150 case R_390_GOT12:
1151 case R_390_GOT16:
1152 case R_390_GOT20:
1153 case R_390_GOT32:
1154 case R_390_GOTENT:
1155 tls_type = GOT_NORMAL;
1156 break;
1157 case R_390_TLS_GD32:
1158 tls_type = GOT_TLS_GD;
1159 break;
1160 case R_390_TLS_IE32:
1161 case R_390_TLS_GOTIE32:
1162 tls_type = GOT_TLS_IE;
1163 break;
1164 case R_390_TLS_GOTIE12:
1165 case R_390_TLS_GOTIE20:
1166 case R_390_TLS_IEENT:
1167 tls_type = GOT_TLS_IE_NLT;
1168 break;
1169 }
1170
1171 if (h != NULL)
1172 {
1173 h->got.refcount += 1;
1174 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1175 }
1176 else
1177 {
1178 local_got_refcounts[r_symndx] += 1;
1179 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1180 }
1181 /* If a TLS symbol is accessed using IE at least once,
1182 there is no point to use dynamic model for it. */
1183 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1184 {
1185 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1186 {
1187 (*_bfd_error_handler)
1188 (_("%B: `%s' accessed both as normal and thread local symbol"),
1189 abfd, h->root.root.string);
1190 return FALSE;
1191 }
1192 if (old_tls_type > tls_type)
1193 tls_type = old_tls_type;
1194 }
1195
1196 if (old_tls_type != tls_type)
1197 {
1198 if (h != NULL)
1199 elf_s390_hash_entry (h)->tls_type = tls_type;
1200 else
1201 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1202 }
1203
1204 if (r_type != R_390_TLS_IE32)
1205 break;
1206 /* Fall through. */
1207
1208 case R_390_TLS_LE32:
1209 if (!info->shared)
1210 break;
1211 info->flags |= DF_STATIC_TLS;
1212 /* Fall through. */
1213
1214 case R_390_8:
1215 case R_390_16:
1216 case R_390_32:
1217 case R_390_PC16:
1218 case R_390_PC16DBL:
1219 case R_390_PC32DBL:
1220 case R_390_PC32:
1221 if (h != NULL && !info->shared)
1222 {
1223 /* If this reloc is in a read-only section, we might
1224 need a copy reloc. We can't check reliably at this
1225 stage whether the section is read-only, as input
1226 sections have not yet been mapped to output sections.
1227 Tentatively set the flag for now, and correct in
1228 adjust_dynamic_symbol. */
1229 h->non_got_ref = 1;
1230
1231 /* We may need a .plt entry if the function this reloc
1232 refers to is in a shared lib. */
1233 h->plt.refcount += 1;
1234 }
1235
1236 /* If we are creating a shared library, and this is a reloc
1237 against a global symbol, or a non PC relative reloc
1238 against a local symbol, then we need to copy the reloc
1239 into the shared library. However, if we are linking with
1240 -Bsymbolic, we do not need to copy a reloc against a
1241 global symbol which is defined in an object we are
1242 including in the link (i.e., DEF_REGULAR is set). At
1243 this point we have not seen all the input files, so it is
1244 possible that DEF_REGULAR is not set now but will be set
1245 later (it is never cleared). In case of a weak definition,
1246 DEF_REGULAR may be cleared later by a strong definition in
1247 a shared library. We account for that possibility below by
1248 storing information in the relocs_copied field of the hash
1249 table entry. A similar situation occurs when creating
1250 shared libraries and symbol visibility changes render the
1251 symbol local.
1252
1253 If on the other hand, we are creating an executable, we
1254 may need to keep relocations for symbols satisfied by a
1255 dynamic library if we manage to avoid copy relocs for the
1256 symbol. */
1257 if ((info->shared
1258 && (sec->flags & SEC_ALLOC) != 0
1259 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1260 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1261 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1262 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1263 || (h != NULL
1264 && (! info->symbolic
1265 || h->root.type == bfd_link_hash_defweak
1266 || !h->def_regular))))
1267 || (ELIMINATE_COPY_RELOCS
1268 && !info->shared
1269 && (sec->flags & SEC_ALLOC) != 0
1270 && h != NULL
1271 && (h->root.type == bfd_link_hash_defweak
1272 || !h->def_regular)))
1273 {
1274 struct elf_s390_dyn_relocs *p;
1275 struct elf_s390_dyn_relocs **head;
1276
1277 /* We must copy these reloc types into the output file.
1278 Create a reloc section in dynobj and make room for
1279 this reloc. */
1280 if (sreloc == NULL)
1281 {
1282 const char *name;
1283 bfd *dynobj;
1284
1285 name = (bfd_elf_string_from_elf_section
1286 (abfd,
1287 elf_elfheader (abfd)->e_shstrndx,
1288 elf_section_data (sec)->rel_hdr.sh_name));
1289 if (name == NULL)
1290 return FALSE;
1291
1292 if (! CONST_STRNEQ (name, ".rela")
1293 || strcmp (bfd_get_section_name (abfd, sec),
1294 name + 5) != 0)
1295 {
1296 (*_bfd_error_handler)
1297 (_("%B: bad relocation section name `%s\'"),
1298 abfd, name);
1299 }
1300
1301 if (htab->elf.dynobj == NULL)
1302 htab->elf.dynobj = abfd;
1303
1304 dynobj = htab->elf.dynobj;
1305 sreloc = bfd_get_section_by_name (dynobj, name);
1306 if (sreloc == NULL)
1307 {
1308 flagword flags;
1309
1310 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1311 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1312 if ((sec->flags & SEC_ALLOC) != 0)
1313 flags |= SEC_ALLOC | SEC_LOAD;
1314 sreloc = bfd_make_section_with_flags (dynobj,
1315 name,
1316 flags);
1317 if (sreloc == NULL
1318 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1319 return FALSE;
1320 }
1321 elf_section_data (sec)->sreloc = sreloc;
1322 }
1323
1324 /* If this is a global symbol, we count the number of
1325 relocations we need for this symbol. */
1326 if (h != NULL)
1327 {
1328 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1329 }
1330 else
1331 {
1332 /* Track dynamic relocs needed for local syms too.
1333 We really need local syms available to do this
1334 easily. Oh well. */
1335 asection *s;
1336 void *vpp;
1337
1338 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1339 sec, r_symndx);
1340 if (s == NULL)
1341 return FALSE;
1342
1343 vpp = &elf_section_data (s)->local_dynrel;
1344 head = (struct elf_s390_dyn_relocs **) vpp;
1345 }
1346
1347 p = *head;
1348 if (p == NULL || p->sec != sec)
1349 {
1350 bfd_size_type amt = sizeof *p;
1351
1352 p = ((struct elf_s390_dyn_relocs *)
1353 bfd_alloc (htab->elf.dynobj, amt));
1354 if (p == NULL)
1355 return FALSE;
1356 p->next = *head;
1357 *head = p;
1358 p->sec = sec;
1359 p->count = 0;
1360 p->pc_count = 0;
1361 }
1362
1363 p->count += 1;
1364 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1365 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1366 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1367 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1368 p->pc_count += 1;
1369 }
1370 break;
1371
1372 /* This relocation describes the C++ object vtable hierarchy.
1373 Reconstruct it for later use during GC. */
1374 case R_390_GNU_VTINHERIT:
1375 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1376 return FALSE;
1377 break;
1378
1379 /* This relocation describes which C++ vtable entries are actually
1380 used. Record for later use during GC. */
1381 case R_390_GNU_VTENTRY:
1382 BFD_ASSERT (h != NULL);
1383 if (h != NULL
1384 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1385 return FALSE;
1386 break;
1387
1388 default:
1389 break;
1390 }
1391 }
1392
1393 return TRUE;
1394 }
1395
1396 /* Return the section that should be marked against GC for a given
1397 relocation. */
1398
1399 static asection *
1400 elf_s390_gc_mark_hook (asection *sec,
1401 struct bfd_link_info *info,
1402 Elf_Internal_Rela *rel,
1403 struct elf_link_hash_entry *h,
1404 Elf_Internal_Sym *sym)
1405 {
1406 if (h != NULL)
1407 switch (ELF32_R_TYPE (rel->r_info))
1408 {
1409 case R_390_GNU_VTINHERIT:
1410 case R_390_GNU_VTENTRY:
1411 return NULL;
1412 }
1413 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1414
1415 }
1416
1417 /* Update the got entry reference counts for the section being removed. */
1418
1419 static bfd_boolean
1420 elf_s390_gc_sweep_hook (bfd *abfd,
1421 struct bfd_link_info *info,
1422 asection *sec,
1423 const Elf_Internal_Rela *relocs)
1424 {
1425 Elf_Internal_Shdr *symtab_hdr;
1426 struct elf_link_hash_entry **sym_hashes;
1427 bfd_signed_vma *local_got_refcounts;
1428 const Elf_Internal_Rela *rel, *relend;
1429
1430 if (info->relocatable)
1431 return TRUE;
1432
1433 elf_section_data (sec)->local_dynrel = NULL;
1434
1435 symtab_hdr = &elf_symtab_hdr (abfd);
1436 sym_hashes = elf_sym_hashes (abfd);
1437 local_got_refcounts = elf_local_got_refcounts (abfd);
1438
1439 relend = relocs + sec->reloc_count;
1440 for (rel = relocs; rel < relend; rel++)
1441 {
1442 unsigned long r_symndx;
1443 unsigned int r_type;
1444 struct elf_link_hash_entry *h = NULL;
1445
1446 r_symndx = ELF32_R_SYM (rel->r_info);
1447 if (r_symndx >= symtab_hdr->sh_info)
1448 {
1449 struct elf_s390_link_hash_entry *eh;
1450 struct elf_s390_dyn_relocs **pp;
1451 struct elf_s390_dyn_relocs *p;
1452
1453 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1454 while (h->root.type == bfd_link_hash_indirect
1455 || h->root.type == bfd_link_hash_warning)
1456 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1457 eh = (struct elf_s390_link_hash_entry *) h;
1458
1459 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1460 if (p->sec == sec)
1461 {
1462 /* Everything must go for SEC. */
1463 *pp = p->next;
1464 break;
1465 }
1466 }
1467
1468 r_type = ELF32_R_TYPE (rel->r_info);
1469 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1470 switch (r_type)
1471 {
1472 case R_390_TLS_LDM32:
1473 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1474 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1475 break;
1476
1477 case R_390_TLS_GD32:
1478 case R_390_TLS_IE32:
1479 case R_390_TLS_GOTIE12:
1480 case R_390_TLS_GOTIE20:
1481 case R_390_TLS_GOTIE32:
1482 case R_390_TLS_IEENT:
1483 case R_390_GOT12:
1484 case R_390_GOT16:
1485 case R_390_GOT20:
1486 case R_390_GOT32:
1487 case R_390_GOTOFF16:
1488 case R_390_GOTOFF32:
1489 case R_390_GOTPC:
1490 case R_390_GOTPCDBL:
1491 case R_390_GOTENT:
1492 if (h != NULL)
1493 {
1494 if (h->got.refcount > 0)
1495 h->got.refcount -= 1;
1496 }
1497 else if (local_got_refcounts != NULL)
1498 {
1499 if (local_got_refcounts[r_symndx] > 0)
1500 local_got_refcounts[r_symndx] -= 1;
1501 }
1502 break;
1503
1504 case R_390_8:
1505 case R_390_12:
1506 case R_390_16:
1507 case R_390_20:
1508 case R_390_32:
1509 case R_390_PC16:
1510 case R_390_PC16DBL:
1511 case R_390_PC32DBL:
1512 case R_390_PC32:
1513 if (info->shared)
1514 break;
1515 /* Fall through. */
1516
1517 case R_390_PLT16DBL:
1518 case R_390_PLT32DBL:
1519 case R_390_PLT32:
1520 case R_390_PLTOFF16:
1521 case R_390_PLTOFF32:
1522 if (h != NULL)
1523 {
1524 if (h->plt.refcount > 0)
1525 h->plt.refcount -= 1;
1526 }
1527 break;
1528
1529 case R_390_GOTPLT12:
1530 case R_390_GOTPLT16:
1531 case R_390_GOTPLT20:
1532 case R_390_GOTPLT32:
1533 case R_390_GOTPLTENT:
1534 if (h != NULL)
1535 {
1536 if (h->plt.refcount > 0)
1537 {
1538 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1539 h->plt.refcount -= 1;
1540 }
1541 }
1542 else if (local_got_refcounts != NULL)
1543 {
1544 if (local_got_refcounts[r_symndx] > 0)
1545 local_got_refcounts[r_symndx] -= 1;
1546 }
1547 break;
1548
1549 default:
1550 break;
1551 }
1552 }
1553
1554 return TRUE;
1555 }
1556
1557 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1558 entry but we found we will not create any. Called when we find we will
1559 not have any PLT for this symbol, by for example
1560 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1561 or elf_s390_size_dynamic_sections if no dynamic sections will be
1562 created (we're only linking static objects). */
1563
1564 static void
1565 elf_s390_adjust_gotplt (h)
1566 struct elf_s390_link_hash_entry *h;
1567 {
1568 if (h->elf.root.type == bfd_link_hash_warning)
1569 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1570
1571 if (h->gotplt_refcount <= 0)
1572 return;
1573
1574 /* We simply add the number of gotplt references to the number
1575 * of got references for this symbol. */
1576 h->elf.got.refcount += h->gotplt_refcount;
1577 h->gotplt_refcount = -1;
1578 }
1579
1580 /* Adjust a symbol defined by a dynamic object and referenced by a
1581 regular object. The current definition is in some section of the
1582 dynamic object, but we're not including those sections. We have to
1583 change the definition to something the rest of the link can
1584 understand. */
1585
1586 static bfd_boolean
1587 elf_s390_adjust_dynamic_symbol (info, h)
1588 struct bfd_link_info *info;
1589 struct elf_link_hash_entry *h;
1590 {
1591 struct elf_s390_link_hash_table *htab;
1592 asection *s;
1593
1594 /* If this is a function, put it in the procedure linkage table. We
1595 will fill in the contents of the procedure linkage table later
1596 (although we could actually do it here). */
1597 if (h->type == STT_FUNC
1598 || h->needs_plt)
1599 {
1600 if (h->plt.refcount <= 0
1601 || (! info->shared
1602 && !h->def_dynamic
1603 && !h->ref_dynamic
1604 && h->root.type != bfd_link_hash_undefweak
1605 && h->root.type != bfd_link_hash_undefined))
1606 {
1607 /* This case can occur if we saw a PLT32 reloc in an input
1608 file, but the symbol was never referred to by a dynamic
1609 object, or if all references were garbage collected. In
1610 such a case, we don't actually need to build a procedure
1611 linkage table, and we can just do a PC32 reloc instead. */
1612 h->plt.offset = (bfd_vma) -1;
1613 h->needs_plt = 0;
1614 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1615 }
1616
1617 return TRUE;
1618 }
1619 else
1620 /* It's possible that we incorrectly decided a .plt reloc was
1621 needed for an R_390_PC32 reloc to a non-function sym in
1622 check_relocs. We can't decide accurately between function and
1623 non-function syms in check-relocs; Objects loaded later in
1624 the link may change h->type. So fix it now. */
1625 h->plt.offset = (bfd_vma) -1;
1626
1627 /* If this is a weak symbol, and there is a real definition, the
1628 processor independent code will have arranged for us to see the
1629 real definition first, and we can just use the same value. */
1630 if (h->u.weakdef != NULL)
1631 {
1632 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1633 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1634 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1635 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1636 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1637 h->non_got_ref = h->u.weakdef->non_got_ref;
1638 return TRUE;
1639 }
1640
1641 /* This is a reference to a symbol defined by a dynamic object which
1642 is not a function. */
1643
1644 /* If we are creating a shared library, we must presume that the
1645 only references to the symbol are via the global offset table.
1646 For such cases we need not do anything here; the relocations will
1647 be handled correctly by relocate_section. */
1648 if (info->shared)
1649 return TRUE;
1650
1651 /* If there are no references to this symbol that do not use the
1652 GOT, we don't need to generate a copy reloc. */
1653 if (!h->non_got_ref)
1654 return TRUE;
1655
1656 /* If -z nocopyreloc was given, we won't generate them either. */
1657 if (info->nocopyreloc)
1658 {
1659 h->non_got_ref = 0;
1660 return TRUE;
1661 }
1662
1663 if (ELIMINATE_COPY_RELOCS)
1664 {
1665 struct elf_s390_link_hash_entry * eh;
1666 struct elf_s390_dyn_relocs *p;
1667
1668 eh = (struct elf_s390_link_hash_entry *) h;
1669 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1670 {
1671 s = p->sec->output_section;
1672 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1673 break;
1674 }
1675
1676 /* If we didn't find any dynamic relocs in read-only sections, then
1677 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1678 if (p == NULL)
1679 {
1680 h->non_got_ref = 0;
1681 return TRUE;
1682 }
1683 }
1684
1685 if (h->size == 0)
1686 {
1687 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1688 h->root.root.string);
1689 return TRUE;
1690 }
1691
1692 /* We must allocate the symbol in our .dynbss section, which will
1693 become part of the .bss section of the executable. There will be
1694 an entry for this symbol in the .dynsym section. The dynamic
1695 object will contain position independent code, so all references
1696 from the dynamic object to this symbol will go through the global
1697 offset table. The dynamic linker will use the .dynsym entry to
1698 determine the address it must put in the global offset table, so
1699 both the dynamic object and the regular object will refer to the
1700 same memory location for the variable. */
1701
1702 htab = elf_s390_hash_table (info);
1703
1704 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1705 copy the initial value out of the dynamic object and into the
1706 runtime process image. */
1707 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1708 {
1709 htab->srelbss->size += sizeof (Elf32_External_Rela);
1710 h->needs_copy = 1;
1711 }
1712
1713 s = htab->sdynbss;
1714
1715 return _bfd_elf_adjust_dynamic_copy (h, s);
1716 }
1717
1718 /* Allocate space in .plt, .got and associated reloc sections for
1719 dynamic relocs. */
1720
1721 static bfd_boolean
1722 allocate_dynrelocs (h, inf)
1723 struct elf_link_hash_entry *h;
1724 PTR inf;
1725 {
1726 struct bfd_link_info *info;
1727 struct elf_s390_link_hash_table *htab;
1728 struct elf_s390_link_hash_entry *eh;
1729 struct elf_s390_dyn_relocs *p;
1730
1731 if (h->root.type == bfd_link_hash_indirect)
1732 return TRUE;
1733
1734 if (h->root.type == bfd_link_hash_warning)
1735 /* When warning symbols are created, they **replace** the "real"
1736 entry in the hash table, thus we never get to see the real
1737 symbol in a hash traversal. So look at it now. */
1738 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1739
1740 info = (struct bfd_link_info *) inf;
1741 htab = elf_s390_hash_table (info);
1742
1743 if (htab->elf.dynamic_sections_created
1744 && h->plt.refcount > 0
1745 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1746 || h->root.type != bfd_link_hash_undefweak))
1747 {
1748 /* Make sure this symbol is output as a dynamic symbol.
1749 Undefined weak syms won't yet be marked as dynamic. */
1750 if (h->dynindx == -1
1751 && !h->forced_local)
1752 {
1753 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1754 return FALSE;
1755 }
1756
1757 if (info->shared
1758 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1759 {
1760 asection *s = htab->splt;
1761
1762 /* If this is the first .plt entry, make room for the special
1763 first entry. */
1764 if (s->size == 0)
1765 s->size += PLT_FIRST_ENTRY_SIZE;
1766
1767 h->plt.offset = s->size;
1768
1769 /* If this symbol is not defined in a regular file, and we are
1770 not generating a shared library, then set the symbol to this
1771 location in the .plt. This is required to make function
1772 pointers compare as equal between the normal executable and
1773 the shared library. */
1774 if (! info->shared
1775 && !h->def_regular)
1776 {
1777 h->root.u.def.section = s;
1778 h->root.u.def.value = h->plt.offset;
1779 }
1780
1781 /* Make room for this entry. */
1782 s->size += PLT_ENTRY_SIZE;
1783
1784 /* We also need to make an entry in the .got.plt section, which
1785 will be placed in the .got section by the linker script. */
1786 htab->sgotplt->size += GOT_ENTRY_SIZE;
1787
1788 /* We also need to make an entry in the .rela.plt section. */
1789 htab->srelplt->size += sizeof (Elf32_External_Rela);
1790 }
1791 else
1792 {
1793 h->plt.offset = (bfd_vma) -1;
1794 h->needs_plt = 0;
1795 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1796 }
1797 }
1798 else
1799 {
1800 h->plt.offset = (bfd_vma) -1;
1801 h->needs_plt = 0;
1802 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1803 }
1804
1805 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1806 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1807 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1808 we can save the dynamic TLS relocation. */
1809 if (h->got.refcount > 0
1810 && !info->shared
1811 && h->dynindx == -1
1812 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1813 {
1814 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1815 /* For the GOTIE access without a literal pool entry the offset has
1816 to be stored somewhere. The immediate value in the instruction
1817 is not bit enough so the value is stored in the got. */
1818 {
1819 h->got.offset = htab->sgot->size;
1820 htab->sgot->size += GOT_ENTRY_SIZE;
1821 }
1822 else
1823 h->got.offset = (bfd_vma) -1;
1824 }
1825 else if (h->got.refcount > 0)
1826 {
1827 asection *s;
1828 bfd_boolean dyn;
1829 int tls_type = elf_s390_hash_entry(h)->tls_type;
1830
1831 /* Make sure this symbol is output as a dynamic symbol.
1832 Undefined weak syms won't yet be marked as dynamic. */
1833 if (h->dynindx == -1
1834 && !h->forced_local)
1835 {
1836 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1837 return FALSE;
1838 }
1839
1840 s = htab->sgot;
1841 h->got.offset = s->size;
1842 s->size += GOT_ENTRY_SIZE;
1843 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1844 if (tls_type == GOT_TLS_GD)
1845 s->size += GOT_ENTRY_SIZE;
1846 dyn = htab->elf.dynamic_sections_created;
1847 /* R_390_TLS_IE32 needs one dynamic relocation,
1848 R_390_TLS_GD32 needs one if local symbol and two if global. */
1849 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1850 || tls_type >= GOT_TLS_IE)
1851 htab->srelgot->size += sizeof (Elf32_External_Rela);
1852 else if (tls_type == GOT_TLS_GD)
1853 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1854 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1855 || h->root.type != bfd_link_hash_undefweak)
1856 && (info->shared
1857 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1858 htab->srelgot->size += sizeof (Elf32_External_Rela);
1859 }
1860 else
1861 h->got.offset = (bfd_vma) -1;
1862
1863 eh = (struct elf_s390_link_hash_entry *) h;
1864 if (eh->dyn_relocs == NULL)
1865 return TRUE;
1866
1867 /* In the shared -Bsymbolic case, discard space allocated for
1868 dynamic pc-relative relocs against symbols which turn out to be
1869 defined in regular objects. For the normal shared case, discard
1870 space for pc-relative relocs that have become local due to symbol
1871 visibility changes. */
1872
1873 if (info->shared)
1874 {
1875 if (SYMBOL_REFERENCES_LOCAL (info, h))
1876 {
1877 struct elf_s390_dyn_relocs **pp;
1878
1879 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1880 {
1881 p->count -= p->pc_count;
1882 p->pc_count = 0;
1883 if (p->count == 0)
1884 *pp = p->next;
1885 else
1886 pp = &p->next;
1887 }
1888 }
1889
1890 /* Also discard relocs on undefined weak syms with non-default
1891 visibility. */
1892 if (eh->dyn_relocs != NULL
1893 && h->root.type == bfd_link_hash_undefweak)
1894 {
1895 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1896 eh->dyn_relocs = NULL;
1897
1898 /* Make sure undefined weak symbols are output as a dynamic
1899 symbol in PIEs. */
1900 else if (h->dynindx == -1
1901 && !h->forced_local)
1902 {
1903 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1904 return FALSE;
1905 }
1906 }
1907 }
1908 else if (ELIMINATE_COPY_RELOCS)
1909 {
1910 /* For the non-shared case, discard space for relocs against
1911 symbols which turn out to need copy relocs or are not
1912 dynamic. */
1913
1914 if (!h->non_got_ref
1915 && ((h->def_dynamic
1916 && !h->def_regular)
1917 || (htab->elf.dynamic_sections_created
1918 && (h->root.type == bfd_link_hash_undefweak
1919 || h->root.type == bfd_link_hash_undefined))))
1920 {
1921 /* Make sure this symbol is output as a dynamic symbol.
1922 Undefined weak syms won't yet be marked as dynamic. */
1923 if (h->dynindx == -1
1924 && !h->forced_local)
1925 {
1926 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1927 return FALSE;
1928 }
1929
1930 /* If that succeeded, we know we'll be keeping all the
1931 relocs. */
1932 if (h->dynindx != -1)
1933 goto keep;
1934 }
1935
1936 eh->dyn_relocs = NULL;
1937
1938 keep: ;
1939 }
1940
1941 /* Finally, allocate space. */
1942 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1943 {
1944 asection *sreloc = elf_section_data (p->sec)->sreloc;
1945
1946 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1947 }
1948
1949 return TRUE;
1950 }
1951
1952 /* Find any dynamic relocs that apply to read-only sections. */
1953
1954 static bfd_boolean
1955 readonly_dynrelocs (h, inf)
1956 struct elf_link_hash_entry *h;
1957 PTR inf;
1958 {
1959 struct elf_s390_link_hash_entry *eh;
1960 struct elf_s390_dyn_relocs *p;
1961
1962 if (h->root.type == bfd_link_hash_warning)
1963 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1964
1965 eh = (struct elf_s390_link_hash_entry *) h;
1966 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1967 {
1968 asection *s = p->sec->output_section;
1969
1970 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1971 {
1972 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1973
1974 info->flags |= DF_TEXTREL;
1975
1976 /* Not an error, just cut short the traversal. */
1977 return FALSE;
1978 }
1979 }
1980 return TRUE;
1981 }
1982
1983 /* Set the sizes of the dynamic sections. */
1984
1985 static bfd_boolean
1986 elf_s390_size_dynamic_sections (output_bfd, info)
1987 bfd *output_bfd ATTRIBUTE_UNUSED;
1988 struct bfd_link_info *info;
1989 {
1990 struct elf_s390_link_hash_table *htab;
1991 bfd *dynobj;
1992 asection *s;
1993 bfd_boolean relocs;
1994 bfd *ibfd;
1995
1996 htab = elf_s390_hash_table (info);
1997 dynobj = htab->elf.dynobj;
1998 if (dynobj == NULL)
1999 abort ();
2000
2001 if (htab->elf.dynamic_sections_created)
2002 {
2003 /* Set the contents of the .interp section to the interpreter. */
2004 if (info->executable)
2005 {
2006 s = bfd_get_section_by_name (dynobj, ".interp");
2007 if (s == NULL)
2008 abort ();
2009 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2010 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2011 }
2012 }
2013
2014 /* Set up .got offsets for local syms, and space for local dynamic
2015 relocs. */
2016 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2017 {
2018 bfd_signed_vma *local_got;
2019 bfd_signed_vma *end_local_got;
2020 char *local_tls_type;
2021 bfd_size_type locsymcount;
2022 Elf_Internal_Shdr *symtab_hdr;
2023 asection *srela;
2024
2025 if (! is_s390_elf (ibfd))
2026 continue;
2027
2028 for (s = ibfd->sections; s != NULL; s = s->next)
2029 {
2030 struct elf_s390_dyn_relocs *p;
2031
2032 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2033 {
2034 if (!bfd_is_abs_section (p->sec)
2035 && bfd_is_abs_section (p->sec->output_section))
2036 {
2037 /* Input section has been discarded, either because
2038 it is a copy of a linkonce section or due to
2039 linker script /DISCARD/, so we'll be discarding
2040 the relocs too. */
2041 }
2042 else if (p->count != 0)
2043 {
2044 srela = elf_section_data (p->sec)->sreloc;
2045 srela->size += p->count * sizeof (Elf32_External_Rela);
2046 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2047 info->flags |= DF_TEXTREL;
2048 }
2049 }
2050 }
2051
2052 local_got = elf_local_got_refcounts (ibfd);
2053 if (!local_got)
2054 continue;
2055
2056 symtab_hdr = &elf_symtab_hdr (ibfd);
2057 locsymcount = symtab_hdr->sh_info;
2058 end_local_got = local_got + locsymcount;
2059 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2060 s = htab->sgot;
2061 srela = htab->srelgot;
2062 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2063 {
2064 if (*local_got > 0)
2065 {
2066 *local_got = s->size;
2067 s->size += GOT_ENTRY_SIZE;
2068 if (*local_tls_type == GOT_TLS_GD)
2069 s->size += GOT_ENTRY_SIZE;
2070 if (info->shared)
2071 srela->size += sizeof (Elf32_External_Rela);
2072 }
2073 else
2074 *local_got = (bfd_vma) -1;
2075 }
2076 }
2077
2078 if (htab->tls_ldm_got.refcount > 0)
2079 {
2080 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2081 relocs. */
2082 htab->tls_ldm_got.offset = htab->sgot->size;
2083 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2084 htab->srelgot->size += sizeof (Elf32_External_Rela);
2085 }
2086 else
2087 htab->tls_ldm_got.offset = -1;
2088
2089 /* Allocate global sym .plt and .got entries, and space for global
2090 sym dynamic relocs. */
2091 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2092
2093 /* We now have determined the sizes of the various dynamic sections.
2094 Allocate memory for them. */
2095 relocs = FALSE;
2096 for (s = dynobj->sections; s != NULL; s = s->next)
2097 {
2098 if ((s->flags & SEC_LINKER_CREATED) == 0)
2099 continue;
2100
2101 if (s == htab->splt
2102 || s == htab->sgot
2103 || s == htab->sgotplt
2104 || s == htab->sdynbss)
2105 {
2106 /* Strip this section if we don't need it; see the
2107 comment below. */
2108 }
2109 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2110 {
2111 if (s->size != 0)
2112 relocs = TRUE;
2113
2114 /* We use the reloc_count field as a counter if we need
2115 to copy relocs into the output file. */
2116 s->reloc_count = 0;
2117 }
2118 else
2119 {
2120 /* It's not one of our sections, so don't allocate space. */
2121 continue;
2122 }
2123
2124 if (s->size == 0)
2125 {
2126 /* If we don't need this section, strip it from the
2127 output file. This is to handle .rela.bss and
2128 .rela.plt. We must create it in
2129 create_dynamic_sections, because it must be created
2130 before the linker maps input sections to output
2131 sections. The linker does that before
2132 adjust_dynamic_symbol is called, and it is that
2133 function which decides whether anything needs to go
2134 into these sections. */
2135
2136 s->flags |= SEC_EXCLUDE;
2137 continue;
2138 }
2139
2140 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2141 continue;
2142
2143 /* Allocate memory for the section contents. We use bfd_zalloc
2144 here in case unused entries are not reclaimed before the
2145 section's contents are written out. This should not happen,
2146 but this way if it does, we get a R_390_NONE reloc instead
2147 of garbage. */
2148 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2149 if (s->contents == NULL)
2150 return FALSE;
2151 }
2152
2153 if (htab->elf.dynamic_sections_created)
2154 {
2155 /* Add some entries to the .dynamic section. We fill in the
2156 values later, in elf_s390_finish_dynamic_sections, but we
2157 must add the entries now so that we get the correct size for
2158 the .dynamic section. The DT_DEBUG entry is filled in by the
2159 dynamic linker and used by the debugger. */
2160 #define add_dynamic_entry(TAG, VAL) \
2161 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2162
2163 if (info->executable)
2164 {
2165 if (!add_dynamic_entry (DT_DEBUG, 0))
2166 return FALSE;
2167 }
2168
2169 if (htab->splt->size != 0)
2170 {
2171 if (!add_dynamic_entry (DT_PLTGOT, 0)
2172 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2173 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2174 || !add_dynamic_entry (DT_JMPREL, 0))
2175 return FALSE;
2176 }
2177
2178 if (relocs)
2179 {
2180 if (!add_dynamic_entry (DT_RELA, 0)
2181 || !add_dynamic_entry (DT_RELASZ, 0)
2182 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2183 return FALSE;
2184
2185 /* If any dynamic relocs apply to a read-only section,
2186 then we need a DT_TEXTREL entry. */
2187 if ((info->flags & DF_TEXTREL) == 0)
2188 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2189 (PTR) info);
2190
2191 if ((info->flags & DF_TEXTREL) != 0)
2192 {
2193 if (!add_dynamic_entry (DT_TEXTREL, 0))
2194 return FALSE;
2195 }
2196 }
2197 }
2198 #undef add_dynamic_entry
2199
2200 return TRUE;
2201 }
2202
2203 /* Return the base VMA address which should be subtracted from real addresses
2204 when resolving @dtpoff relocation.
2205 This is PT_TLS segment p_vaddr. */
2206
2207 static bfd_vma
2208 dtpoff_base (info)
2209 struct bfd_link_info *info;
2210 {
2211 /* If tls_sec is NULL, we should have signalled an error already. */
2212 if (elf_hash_table (info)->tls_sec == NULL)
2213 return 0;
2214 return elf_hash_table (info)->tls_sec->vma;
2215 }
2216
2217 /* Return the relocation value for @tpoff relocation
2218 if STT_TLS virtual address is ADDRESS. */
2219
2220 static bfd_vma
2221 tpoff (info, address)
2222 struct bfd_link_info *info;
2223 bfd_vma address;
2224 {
2225 struct elf_link_hash_table *htab = elf_hash_table (info);
2226
2227 /* If tls_sec is NULL, we should have signalled an error already. */
2228 if (htab->tls_sec == NULL)
2229 return 0;
2230 return htab->tls_size + htab->tls_sec->vma - address;
2231 }
2232
2233 /* Complain if TLS instruction relocation is against an invalid
2234 instruction. */
2235
2236 static void
2237 invalid_tls_insn (input_bfd, input_section, rel)
2238 bfd *input_bfd;
2239 asection *input_section;
2240 Elf_Internal_Rela *rel;
2241 {
2242 reloc_howto_type *howto;
2243
2244 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2245 (*_bfd_error_handler)
2246 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2247 input_bfd,
2248 input_section,
2249 (long) rel->r_offset,
2250 howto->name);
2251 bfd_set_error (bfd_error_bad_value);
2252 }
2253
2254 /* Relocate a 390 ELF section. */
2255
2256 static bfd_boolean
2257 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2258 contents, relocs, local_syms, local_sections)
2259 bfd *output_bfd;
2260 struct bfd_link_info *info;
2261 bfd *input_bfd;
2262 asection *input_section;
2263 bfd_byte *contents;
2264 Elf_Internal_Rela *relocs;
2265 Elf_Internal_Sym *local_syms;
2266 asection **local_sections;
2267 {
2268 struct elf_s390_link_hash_table *htab;
2269 Elf_Internal_Shdr *symtab_hdr;
2270 struct elf_link_hash_entry **sym_hashes;
2271 bfd_vma *local_got_offsets;
2272 Elf_Internal_Rela *rel;
2273 Elf_Internal_Rela *relend;
2274
2275 BFD_ASSERT (is_s390_elf (input_bfd));
2276
2277 htab = elf_s390_hash_table (info);
2278 symtab_hdr = &elf_symtab_hdr (input_bfd);
2279 sym_hashes = elf_sym_hashes (input_bfd);
2280 local_got_offsets = elf_local_got_offsets (input_bfd);
2281
2282 rel = relocs;
2283 relend = relocs + input_section->reloc_count;
2284 for (; rel < relend; rel++)
2285 {
2286 unsigned int r_type;
2287 reloc_howto_type *howto;
2288 unsigned long r_symndx;
2289 struct elf_link_hash_entry *h;
2290 Elf_Internal_Sym *sym;
2291 asection *sec;
2292 bfd_vma off;
2293 bfd_vma relocation;
2294 bfd_boolean unresolved_reloc;
2295 bfd_reloc_status_type r;
2296 int tls_type;
2297
2298 r_type = ELF32_R_TYPE (rel->r_info);
2299 if (r_type == (int) R_390_GNU_VTINHERIT
2300 || r_type == (int) R_390_GNU_VTENTRY)
2301 continue;
2302 if (r_type >= (int) R_390_max)
2303 {
2304 bfd_set_error (bfd_error_bad_value);
2305 return FALSE;
2306 }
2307
2308 howto = elf_howto_table + r_type;
2309 r_symndx = ELF32_R_SYM (rel->r_info);
2310
2311 h = NULL;
2312 sym = NULL;
2313 sec = NULL;
2314 unresolved_reloc = FALSE;
2315 if (r_symndx < symtab_hdr->sh_info)
2316 {
2317 sym = local_syms + r_symndx;
2318 sec = local_sections[r_symndx];
2319 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2320 }
2321 else
2322 {
2323 bfd_boolean warned ATTRIBUTE_UNUSED;
2324
2325 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2326 r_symndx, symtab_hdr, sym_hashes,
2327 h, sec, relocation,
2328 unresolved_reloc, warned);
2329 }
2330
2331 if (sec != NULL && elf_discarded_section (sec))
2332 {
2333 /* For relocs against symbols from removed linkonce sections,
2334 or sections discarded by a linker script, we just want the
2335 section contents zeroed. Avoid any special processing. */
2336 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2337 rel->r_info = 0;
2338 rel->r_addend = 0;
2339 continue;
2340 }
2341
2342 if (info->relocatable)
2343 continue;
2344
2345 switch (r_type)
2346 {
2347 case R_390_GOTPLT12:
2348 case R_390_GOTPLT16:
2349 case R_390_GOTPLT20:
2350 case R_390_GOTPLT32:
2351 case R_390_GOTPLTENT:
2352 /* There are three cases for a GOTPLT relocation. 1) The
2353 relocation is against the jump slot entry of a plt that
2354 will get emitted to the output file. 2) The relocation
2355 is against the jump slot of a plt entry that has been
2356 removed. elf_s390_adjust_gotplt has created a GOT entry
2357 as replacement. 3) The relocation is against a local symbol.
2358 Cases 2) and 3) are the same as the GOT relocation code
2359 so we just have to test for case 1 and fall through for
2360 the other two. */
2361 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2362 {
2363 bfd_vma plt_index;
2364
2365 /* Calc. index no.
2366 Current offset - size first entry / entry size. */
2367 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2368 PLT_ENTRY_SIZE;
2369
2370 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2371 addr & GOT addr. */
2372 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2373 unresolved_reloc = FALSE;
2374
2375 if (r_type == R_390_GOTPLTENT)
2376 relocation += htab->sgot->output_section->vma;
2377 break;
2378 }
2379 /* Fall through. */
2380
2381 case R_390_GOT12:
2382 case R_390_GOT16:
2383 case R_390_GOT20:
2384 case R_390_GOT32:
2385 case R_390_GOTENT:
2386 /* Relocation is to the entry for this symbol in the global
2387 offset table. */
2388 if (htab->sgot == NULL)
2389 abort ();
2390
2391 if (h != NULL)
2392 {
2393 bfd_boolean dyn;
2394
2395 off = h->got.offset;
2396 dyn = htab->elf.dynamic_sections_created;
2397 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2398 || (info->shared
2399 && (info->symbolic
2400 || h->dynindx == -1
2401 || h->forced_local)
2402 && h->def_regular)
2403 || (ELF_ST_VISIBILITY (h->other)
2404 && h->root.type == bfd_link_hash_undefweak))
2405 {
2406 /* This is actually a static link, or it is a
2407 -Bsymbolic link and the symbol is defined
2408 locally, or the symbol was forced to be local
2409 because of a version file. We must initialize
2410 this entry in the global offset table. Since the
2411 offset must always be a multiple of 2, we use the
2412 least significant bit to record whether we have
2413 initialized it already.
2414
2415 When doing a dynamic link, we create a .rel.got
2416 relocation entry to initialize the value. This
2417 is done in the finish_dynamic_symbol routine. */
2418 if ((off & 1) != 0)
2419 off &= ~1;
2420 else
2421 {
2422 bfd_put_32 (output_bfd, relocation,
2423 htab->sgot->contents + off);
2424 h->got.offset |= 1;
2425 }
2426 }
2427 else
2428 unresolved_reloc = FALSE;
2429 }
2430 else
2431 {
2432 if (local_got_offsets == NULL)
2433 abort ();
2434
2435 off = local_got_offsets[r_symndx];
2436
2437 /* The offset must always be a multiple of 4. We use
2438 the least significant bit to record whether we have
2439 already generated the necessary reloc. */
2440 if ((off & 1) != 0)
2441 off &= ~1;
2442 else
2443 {
2444 bfd_put_32 (output_bfd, relocation,
2445 htab->sgot->contents + off);
2446
2447 if (info->shared)
2448 {
2449 asection *srelgot;
2450 Elf_Internal_Rela outrel;
2451 bfd_byte *loc;
2452
2453 srelgot = htab->srelgot;
2454 if (srelgot == NULL)
2455 abort ();
2456
2457 outrel.r_offset = (htab->sgot->output_section->vma
2458 + htab->sgot->output_offset
2459 + off);
2460 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2461 outrel.r_addend = relocation;
2462 loc = srelgot->contents;
2463 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2464 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2465 }
2466
2467 local_got_offsets[r_symndx] |= 1;
2468 }
2469 }
2470
2471 if (off >= (bfd_vma) -2)
2472 abort ();
2473
2474 relocation = htab->sgot->output_offset + off;
2475
2476 /* For @GOTENT the relocation is against the offset between
2477 the instruction and the symbols entry in the GOT and not
2478 between the start of the GOT and the symbols entry. We
2479 add the vma of the GOT to get the correct value. */
2480 if ( r_type == R_390_GOTENT
2481 || r_type == R_390_GOTPLTENT)
2482 relocation += htab->sgot->output_section->vma;
2483
2484 break;
2485
2486 case R_390_GOTOFF16:
2487 case R_390_GOTOFF32:
2488 /* Relocation is relative to the start of the global offset
2489 table. */
2490
2491 /* Note that sgot->output_offset is not involved in this
2492 calculation. We always want the start of .got. If we
2493 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2494 permitted by the ABI, we might have to change this
2495 calculation. */
2496 relocation -= htab->sgot->output_section->vma;
2497 break;
2498
2499 case R_390_GOTPC:
2500 case R_390_GOTPCDBL:
2501 /* Use global offset table as symbol value. */
2502 relocation = htab->sgot->output_section->vma;
2503 unresolved_reloc = FALSE;
2504 break;
2505
2506 case R_390_PLT16DBL:
2507 case R_390_PLT32DBL:
2508 case R_390_PLT32:
2509 /* Relocation is to the entry for this symbol in the
2510 procedure linkage table. */
2511
2512 /* Resolve a PLT32 reloc against a local symbol directly,
2513 without using the procedure linkage table. */
2514 if (h == NULL)
2515 break;
2516
2517 if (h->plt.offset == (bfd_vma) -1
2518 || htab->splt == NULL)
2519 {
2520 /* We didn't make a PLT entry for this symbol. This
2521 happens when statically linking PIC code, or when
2522 using -Bsymbolic. */
2523 break;
2524 }
2525
2526 relocation = (htab->splt->output_section->vma
2527 + htab->splt->output_offset
2528 + h->plt.offset);
2529 unresolved_reloc = FALSE;
2530 break;
2531
2532 case R_390_PLTOFF16:
2533 case R_390_PLTOFF32:
2534 /* Relocation is to the entry for this symbol in the
2535 procedure linkage table relative to the start of the GOT. */
2536
2537 /* For local symbols or if we didn't make a PLT entry for
2538 this symbol resolve the symbol directly. */
2539 if ( h == NULL
2540 || h->plt.offset == (bfd_vma) -1
2541 || htab->splt == NULL)
2542 {
2543 relocation -= htab->sgot->output_section->vma;
2544 break;
2545 }
2546
2547 relocation = (htab->splt->output_section->vma
2548 + htab->splt->output_offset
2549 + h->plt.offset
2550 - htab->sgot->output_section->vma);
2551 unresolved_reloc = FALSE;
2552 break;
2553
2554 case R_390_8:
2555 case R_390_16:
2556 case R_390_32:
2557 case R_390_PC16:
2558 case R_390_PC16DBL:
2559 case R_390_PC32DBL:
2560 case R_390_PC32:
2561 if ((input_section->flags & SEC_ALLOC) == 0)
2562 break;
2563
2564 if ((info->shared
2565 && (h == NULL
2566 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2567 || h->root.type != bfd_link_hash_undefweak)
2568 && ((r_type != R_390_PC16
2569 && r_type != R_390_PC16DBL
2570 && r_type != R_390_PC32DBL
2571 && r_type != R_390_PC32)
2572 || (h != NULL
2573 && !SYMBOL_REFERENCES_LOCAL (info, h))))
2574 || (ELIMINATE_COPY_RELOCS
2575 && !info->shared
2576 && h != NULL
2577 && h->dynindx != -1
2578 && !h->non_got_ref
2579 && ((h->def_dynamic
2580 && !h->def_regular)
2581 || h->root.type == bfd_link_hash_undefweak
2582 || h->root.type == bfd_link_hash_undefined)))
2583 {
2584 Elf_Internal_Rela outrel;
2585 bfd_boolean skip, relocate;
2586 asection *sreloc;
2587 bfd_byte *loc;
2588
2589 /* When generating a shared object, these relocations
2590 are copied into the output file to be resolved at run
2591 time. */
2592
2593 skip = FALSE;
2594 relocate = FALSE;
2595
2596 outrel.r_offset =
2597 _bfd_elf_section_offset (output_bfd, info, input_section,
2598 rel->r_offset);
2599 if (outrel.r_offset == (bfd_vma) -1)
2600 skip = TRUE;
2601 else if (outrel.r_offset == (bfd_vma) -2)
2602 skip = TRUE, relocate = TRUE;
2603 outrel.r_offset += (input_section->output_section->vma
2604 + input_section->output_offset);
2605
2606 if (skip)
2607 memset (&outrel, 0, sizeof outrel);
2608 else if (h != NULL
2609 && h->dynindx != -1
2610 && (r_type == R_390_PC16
2611 || r_type == R_390_PC16DBL
2612 || r_type == R_390_PC32DBL
2613 || r_type == R_390_PC32
2614 || !info->shared
2615 || !info->symbolic
2616 || !h->def_regular))
2617 {
2618 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2619 outrel.r_addend = rel->r_addend;
2620 }
2621 else
2622 {
2623 /* This symbol is local, or marked to become local. */
2624 outrel.r_addend = relocation + rel->r_addend;
2625 if (r_type == R_390_32)
2626 {
2627 relocate = TRUE;
2628 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2629 }
2630 else
2631 {
2632 long sindx;
2633
2634 if (bfd_is_abs_section (sec))
2635 sindx = 0;
2636 else if (sec == NULL || sec->owner == NULL)
2637 {
2638 bfd_set_error(bfd_error_bad_value);
2639 return FALSE;
2640 }
2641 else
2642 {
2643 asection *osec;
2644
2645 osec = sec->output_section;
2646 sindx = elf_section_data (osec)->dynindx;
2647 if (sindx == 0)
2648 {
2649 osec = htab->elf.text_index_section;
2650 sindx = elf_section_data (osec)->dynindx;
2651 }
2652 BFD_ASSERT (sindx != 0);
2653
2654 /* We are turning this relocation into one
2655 against a section symbol, so subtract out
2656 the output section's address but not the
2657 offset of the input section in the output
2658 section. */
2659 outrel.r_addend -= osec->vma;
2660 }
2661 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2662 }
2663 }
2664
2665 sreloc = elf_section_data (input_section)->sreloc;
2666 if (sreloc == NULL)
2667 abort ();
2668
2669 loc = sreloc->contents;
2670 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2671 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2672
2673 /* If this reloc is against an external symbol, we do
2674 not want to fiddle with the addend. Otherwise, we
2675 need to include the symbol value so that it becomes
2676 an addend for the dynamic reloc. */
2677 if (! relocate)
2678 continue;
2679 }
2680 break;
2681
2682 /* Relocations for tls literal pool entries. */
2683 case R_390_TLS_IE32:
2684 if (info->shared)
2685 {
2686 Elf_Internal_Rela outrel;
2687 asection *sreloc;
2688 bfd_byte *loc;
2689
2690 outrel.r_offset = rel->r_offset
2691 + input_section->output_section->vma
2692 + input_section->output_offset;
2693 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2694 sreloc = elf_section_data (input_section)->sreloc;
2695 if (sreloc == NULL)
2696 abort ();
2697 loc = sreloc->contents;
2698 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2699 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2700 }
2701 /* Fall through. */
2702
2703 case R_390_TLS_GD32:
2704 case R_390_TLS_GOTIE32:
2705 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2706 tls_type = GOT_UNKNOWN;
2707 if (h == NULL && local_got_offsets)
2708 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2709 else if (h != NULL)
2710 {
2711 tls_type = elf_s390_hash_entry(h)->tls_type;
2712 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2713 r_type = R_390_TLS_LE32;
2714 }
2715 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2716 r_type = R_390_TLS_IE32;
2717
2718 if (r_type == R_390_TLS_LE32)
2719 {
2720 /* This relocation gets optimized away by the local exec
2721 access optimization. */
2722 BFD_ASSERT (! unresolved_reloc);
2723 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2724 contents + rel->r_offset);
2725 continue;
2726 }
2727
2728 if (htab->sgot == NULL)
2729 abort ();
2730
2731 if (h != NULL)
2732 off = h->got.offset;
2733 else
2734 {
2735 if (local_got_offsets == NULL)
2736 abort ();
2737
2738 off = local_got_offsets[r_symndx];
2739 }
2740
2741 emit_tls_relocs:
2742
2743 if ((off & 1) != 0)
2744 off &= ~1;
2745 else
2746 {
2747 Elf_Internal_Rela outrel;
2748 bfd_byte *loc;
2749 int dr_type, indx;
2750
2751 if (htab->srelgot == NULL)
2752 abort ();
2753
2754 outrel.r_offset = (htab->sgot->output_section->vma
2755 + htab->sgot->output_offset + off);
2756
2757 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2758 if (r_type == R_390_TLS_GD32)
2759 dr_type = R_390_TLS_DTPMOD;
2760 else
2761 dr_type = R_390_TLS_TPOFF;
2762 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2763 outrel.r_addend = relocation - dtpoff_base (info);
2764 else
2765 outrel.r_addend = 0;
2766 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2767 loc = htab->srelgot->contents;
2768 loc += htab->srelgot->reloc_count++
2769 * sizeof (Elf32_External_Rela);
2770 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2771
2772 if (r_type == R_390_TLS_GD32)
2773 {
2774 if (indx == 0)
2775 {
2776 BFD_ASSERT (! unresolved_reloc);
2777 bfd_put_32 (output_bfd,
2778 relocation - dtpoff_base (info),
2779 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2780 }
2781 else
2782 {
2783 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2784 outrel.r_offset += GOT_ENTRY_SIZE;
2785 outrel.r_addend = 0;
2786 htab->srelgot->reloc_count++;
2787 loc += sizeof (Elf32_External_Rela);
2788 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2789 }
2790 }
2791
2792 if (h != NULL)
2793 h->got.offset |= 1;
2794 else
2795 local_got_offsets[r_symndx] |= 1;
2796 }
2797
2798 if (off >= (bfd_vma) -2)
2799 abort ();
2800 if (r_type == ELF32_R_TYPE (rel->r_info))
2801 {
2802 relocation = htab->sgot->output_offset + off;
2803 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2804 relocation += htab->sgot->output_section->vma;
2805 unresolved_reloc = FALSE;
2806 }
2807 else
2808 {
2809 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2810 contents + rel->r_offset);
2811 continue;
2812 }
2813 break;
2814
2815 case R_390_TLS_GOTIE12:
2816 case R_390_TLS_GOTIE20:
2817 case R_390_TLS_IEENT:
2818 if (h == NULL)
2819 {
2820 if (local_got_offsets == NULL)
2821 abort();
2822 off = local_got_offsets[r_symndx];
2823 if (info->shared)
2824 goto emit_tls_relocs;
2825 }
2826 else
2827 {
2828 off = h->got.offset;
2829 tls_type = elf_s390_hash_entry(h)->tls_type;
2830 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2831 goto emit_tls_relocs;
2832 }
2833
2834 if (htab->sgot == NULL)
2835 abort ();
2836
2837 BFD_ASSERT (! unresolved_reloc);
2838 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2839 htab->sgot->contents + off);
2840 relocation = htab->sgot->output_offset + off;
2841 if (r_type == R_390_TLS_IEENT)
2842 relocation += htab->sgot->output_section->vma;
2843 unresolved_reloc = FALSE;
2844 break;
2845
2846 case R_390_TLS_LDM32:
2847 if (! info->shared)
2848 /* The literal pool entry this relocation refers to gets ignored
2849 by the optimized code of the local exec model. Do nothing
2850 and the value will turn out zero. */
2851 continue;
2852
2853 if (htab->sgot == NULL)
2854 abort ();
2855
2856 off = htab->tls_ldm_got.offset;
2857 if (off & 1)
2858 off &= ~1;
2859 else
2860 {
2861 Elf_Internal_Rela outrel;
2862 bfd_byte *loc;
2863
2864 if (htab->srelgot == NULL)
2865 abort ();
2866
2867 outrel.r_offset = (htab->sgot->output_section->vma
2868 + htab->sgot->output_offset + off);
2869
2870 bfd_put_32 (output_bfd, 0,
2871 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2872 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2873 outrel.r_addend = 0;
2874 loc = htab->srelgot->contents;
2875 loc += htab->srelgot->reloc_count++
2876 * sizeof (Elf32_External_Rela);
2877 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2878 htab->tls_ldm_got.offset |= 1;
2879 }
2880 relocation = htab->sgot->output_offset + off;
2881 unresolved_reloc = FALSE;
2882 break;
2883
2884 case R_390_TLS_LE32:
2885 if (info->shared)
2886 {
2887 /* Linking a shared library with non-fpic code requires
2888 a R_390_TLS_TPOFF relocation. */
2889 Elf_Internal_Rela outrel;
2890 asection *sreloc;
2891 bfd_byte *loc;
2892 int indx;
2893
2894 outrel.r_offset = rel->r_offset
2895 + input_section->output_section->vma
2896 + input_section->output_offset;
2897 if (h != NULL && h->dynindx != -1)
2898 indx = h->dynindx;
2899 else
2900 indx = 0;
2901 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2902 if (indx == 0)
2903 outrel.r_addend = relocation - dtpoff_base (info);
2904 else
2905 outrel.r_addend = 0;
2906 sreloc = elf_section_data (input_section)->sreloc;
2907 if (sreloc == NULL)
2908 abort ();
2909 loc = sreloc->contents;
2910 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2911 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2912 }
2913 else
2914 {
2915 BFD_ASSERT (! unresolved_reloc);
2916 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2917 contents + rel->r_offset);
2918 }
2919 continue;
2920
2921 case R_390_TLS_LDO32:
2922 if (info->shared)
2923 relocation -= dtpoff_base (info);
2924 else
2925 /* When converting LDO to LE, we must negate. */
2926 relocation = -tpoff (info, relocation);
2927 break;
2928
2929 /* Relocations for tls instructions. */
2930 case R_390_TLS_LOAD:
2931 case R_390_TLS_GDCALL:
2932 case R_390_TLS_LDCALL:
2933 tls_type = GOT_UNKNOWN;
2934 if (h == NULL && local_got_offsets)
2935 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2936 else if (h != NULL)
2937 tls_type = elf_s390_hash_entry(h)->tls_type;
2938
2939 if (tls_type == GOT_TLS_GD)
2940 continue;
2941
2942 if (r_type == R_390_TLS_LOAD)
2943 {
2944 if (!info->shared && (h == NULL || h->dynindx == -1))
2945 {
2946 /* IE->LE transition. Four valid cases:
2947 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2948 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2949 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2950 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2951 unsigned int insn, ry;
2952
2953 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2954 ry = 0;
2955 if ((insn & 0xff00f000) == 0x58000000)
2956 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2957 ry = (insn & 0x000f0000);
2958 else if ((insn & 0xff0f0000) == 0x58000000)
2959 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2960 ry = (insn & 0x0000f000) << 4;
2961 else if ((insn & 0xff00f000) == 0x5800c000)
2962 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2963 ry = (insn & 0x000f0000);
2964 else if ((insn & 0xff0f0000) == 0x580c0000)
2965 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2966 ry = (insn & 0x0000f000) << 4;
2967 else
2968 invalid_tls_insn (input_bfd, input_section, rel);
2969 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2970 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2971 }
2972 }
2973 else if (r_type == R_390_TLS_GDCALL)
2974 {
2975 unsigned int insn;
2976
2977 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2978 if ((insn & 0xff000fff) != 0x4d000000 &&
2979 (insn & 0xffff0000) != 0xc0e50000)
2980 invalid_tls_insn (input_bfd, input_section, rel);
2981 if (!info->shared && (h == NULL || h->dynindx == -1))
2982 {
2983 if ((insn & 0xff000000) == 0x4d000000)
2984 {
2985 /* GD->LE transition.
2986 bas %r14,0(%rx,%r13) -> bc 0,0 */
2987 insn = 0x47000000;
2988 }
2989 else
2990 {
2991 /* GD->LE transition.
2992 brasl %r14,_tls_get_addr@plt -> brcl 0,. */
2993 insn = 0xc0040000;
2994 bfd_put_16 (output_bfd, 0x0000,
2995 contents + rel->r_offset + 4);
2996 }
2997 }
2998 else
2999 {
3000 if ((insn & 0xff000000) == 0x4d000000)
3001 {
3002 /* GD->IE transition.
3003 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3004 insn = 0x5822c000;
3005 }
3006 else
3007 {
3008 /* GD->IE transition.
3009 brasl %r14,__tls_get_addr@plt ->
3010 l %r2,0(%r2,%r12) ; bcr 0,0 */
3011 insn = 0x5822c000;
3012 bfd_put_16 (output_bfd, 0x0700,
3013 contents + rel->r_offset + 4);
3014 }
3015 }
3016 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3017 }
3018 else if (r_type == R_390_TLS_LDCALL)
3019 {
3020 if (!info->shared)
3021 {
3022 unsigned int insn;
3023
3024 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3025 if ((insn & 0xff000fff) != 0x4d000000 &&
3026 (insn & 0xffff0000) != 0xc0e50000)
3027 invalid_tls_insn (input_bfd, input_section, rel);
3028 if ((insn & 0xff000000) == 0x4d000000)
3029 {
3030 /* LD->LE transition.
3031 bas %r14,0(%rx,%r13) -> bc 0,0 */
3032 insn = 0x47000000;
3033 }
3034 else
3035 {
3036 /* LD->LE transition.
3037 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3038 insn = 0xc0040000;
3039 bfd_put_16 (output_bfd, 0x0000,
3040 contents + rel->r_offset + 4);
3041 }
3042 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3043 }
3044 }
3045 continue;
3046
3047 default:
3048 break;
3049 }
3050
3051 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3052 because such sections are not SEC_ALLOC and thus ld.so will
3053 not process them. */
3054 if (unresolved_reloc
3055 && !((input_section->flags & SEC_DEBUGGING) != 0
3056 && h->def_dynamic))
3057 (*_bfd_error_handler)
3058 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3059 input_bfd,
3060 input_section,
3061 (long) rel->r_offset,
3062 howto->name,
3063 h->root.root.string);
3064
3065 if (r_type == R_390_20
3066 || r_type == R_390_GOT20
3067 || r_type == R_390_GOTPLT20
3068 || r_type == R_390_TLS_GOTIE20)
3069 {
3070 relocation += rel->r_addend;
3071 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3072 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3073 contents, rel->r_offset,
3074 relocation, 0);
3075 }
3076 else
3077 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3078 contents, rel->r_offset,
3079 relocation, rel->r_addend);
3080
3081 if (r != bfd_reloc_ok)
3082 {
3083 const char *name;
3084
3085 if (h != NULL)
3086 name = h->root.root.string;
3087 else
3088 {
3089 name = bfd_elf_string_from_elf_section (input_bfd,
3090 symtab_hdr->sh_link,
3091 sym->st_name);
3092 if (name == NULL)
3093 return FALSE;
3094 if (*name == '\0')
3095 name = bfd_section_name (input_bfd, sec);
3096 }
3097
3098 if (r == bfd_reloc_overflow)
3099 {
3100
3101 if (! ((*info->callbacks->reloc_overflow)
3102 (info, (h ? &h->root : NULL), name, howto->name,
3103 (bfd_vma) 0, input_bfd, input_section,
3104 rel->r_offset)))
3105 return FALSE;
3106 }
3107 else
3108 {
3109 (*_bfd_error_handler)
3110 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3111 input_bfd, input_section,
3112 (long) rel->r_offset, name, (int) r);
3113 return FALSE;
3114 }
3115 }
3116 }
3117
3118 return TRUE;
3119 }
3120
3121 /* Finish up dynamic symbol handling. We set the contents of various
3122 dynamic sections here. */
3123
3124 static bfd_boolean
3125 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3126 bfd *output_bfd;
3127 struct bfd_link_info *info;
3128 struct elf_link_hash_entry *h;
3129 Elf_Internal_Sym *sym;
3130 {
3131 struct elf_s390_link_hash_table *htab;
3132
3133 htab = elf_s390_hash_table (info);
3134
3135 if (h->plt.offset != (bfd_vma) -1)
3136 {
3137 bfd_vma plt_index;
3138 bfd_vma got_offset;
3139 Elf_Internal_Rela rela;
3140 bfd_byte *loc;
3141 bfd_vma relative_offset;
3142
3143 /* This symbol has an entry in the procedure linkage table. Set
3144 it up. */
3145 if (h->dynindx == -1
3146 || htab->splt == NULL
3147 || htab->sgotplt == NULL
3148 || htab->srelplt == NULL)
3149 abort ();
3150
3151 /* Calc. index no.
3152 Current offset - size first entry / entry size. */
3153 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3154
3155 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3156 addr & GOT addr. */
3157 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3158
3159 /* S390 uses halfwords for relative branch calc! */
3160 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3161 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3162 /* If offset is > 32768, branch to a previous branch
3163 390 can only handle +-64 K jumps. */
3164 if ( -32768 > (int) relative_offset )
3165 relative_offset
3166 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3167
3168 /* Fill in the entry in the procedure linkage table. */
3169 if (!info->shared)
3170 {
3171 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3172 htab->splt->contents + h->plt.offset);
3173 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3174 htab->splt->contents + h->plt.offset + 4);
3175 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3176 htab->splt->contents + h->plt.offset + 8);
3177 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3178 htab->splt->contents + h->plt.offset + 12);
3179 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3180 htab->splt->contents + h->plt.offset + 16);
3181 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3182 htab->splt->contents + h->plt.offset + 20);
3183 bfd_put_32 (output_bfd,
3184 (htab->sgotplt->output_section->vma
3185 + htab->sgotplt->output_offset
3186 + got_offset),
3187 htab->splt->contents + h->plt.offset + 24);
3188 }
3189 else if (got_offset < 4096)
3190 {
3191 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3192 htab->splt->contents + h->plt.offset);
3193 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3194 htab->splt->contents + h->plt.offset + 4);
3195 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3196 htab->splt->contents + h->plt.offset + 8);
3197 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3198 htab->splt->contents + h->plt.offset + 12);
3199 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3200 htab->splt->contents + h->plt.offset + 16);
3201 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3202 htab->splt->contents + h->plt.offset + 20);
3203 bfd_put_32 (output_bfd, (bfd_vma) 0,
3204 htab->splt->contents + h->plt.offset + 24);
3205 }
3206 else if (got_offset < 32768)
3207 {
3208 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3209 htab->splt->contents + h->plt.offset);
3210 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3211 htab->splt->contents + h->plt.offset + 4);
3212 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3213 htab->splt->contents + h->plt.offset + 8);
3214 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3215 htab->splt->contents + h->plt.offset + 12);
3216 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3217 htab->splt->contents + h->plt.offset + 16);
3218 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3219 htab->splt->contents + h->plt.offset + 20);
3220 bfd_put_32 (output_bfd, (bfd_vma) 0,
3221 htab->splt->contents + h->plt.offset + 24);
3222 }
3223 else
3224 {
3225 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3226 htab->splt->contents + h->plt.offset);
3227 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3228 htab->splt->contents + h->plt.offset + 4);
3229 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3230 htab->splt->contents + h->plt.offset + 8);
3231 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3232 htab->splt->contents + h->plt.offset + 12);
3233 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3234 htab->splt->contents + h->plt.offset + 16);
3235 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3236 htab->splt->contents + h->plt.offset + 20);
3237 bfd_put_32 (output_bfd, got_offset,
3238 htab->splt->contents + h->plt.offset + 24);
3239 }
3240 /* Insert offset into reloc. table here. */
3241 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3242 htab->splt->contents + h->plt.offset + 28);
3243
3244 /* Fill in the entry in the global offset table.
3245 Points to instruction after GOT offset. */
3246 bfd_put_32 (output_bfd,
3247 (htab->splt->output_section->vma
3248 + htab->splt->output_offset
3249 + h->plt.offset
3250 + 12),
3251 htab->sgotplt->contents + got_offset);
3252
3253 /* Fill in the entry in the .rela.plt section. */
3254 rela.r_offset = (htab->sgotplt->output_section->vma
3255 + htab->sgotplt->output_offset
3256 + got_offset);
3257 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3258 rela.r_addend = 0;
3259 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3260 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3261
3262 if (!h->def_regular)
3263 {
3264 /* Mark the symbol as undefined, rather than as defined in
3265 the .plt section. Leave the value alone. This is a clue
3266 for the dynamic linker, to make function pointer
3267 comparisons work between an application and shared
3268 library. */
3269 sym->st_shndx = SHN_UNDEF;
3270 }
3271 }
3272
3273 if (h->got.offset != (bfd_vma) -1
3274 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3275 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3276 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3277 {
3278 Elf_Internal_Rela rela;
3279 bfd_byte *loc;
3280
3281 /* This symbol has an entry in the global offset table. Set it
3282 up. */
3283
3284 if (htab->sgot == NULL || htab->srelgot == NULL)
3285 abort ();
3286
3287 rela.r_offset = (htab->sgot->output_section->vma
3288 + htab->sgot->output_offset
3289 + (h->got.offset &~ (bfd_vma) 1));
3290
3291 /* If this is a static link, or it is a -Bsymbolic link and the
3292 symbol is defined locally or was forced to be local because
3293 of a version file, we just want to emit a RELATIVE reloc.
3294 The entry in the global offset table will already have been
3295 initialized in the relocate_section function. */
3296 if (info->shared
3297 && (info->symbolic
3298 || h->dynindx == -1
3299 || h->forced_local)
3300 && h->def_regular)
3301 {
3302 BFD_ASSERT((h->got.offset & 1) != 0);
3303 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3304 rela.r_addend = (h->root.u.def.value
3305 + h->root.u.def.section->output_section->vma
3306 + h->root.u.def.section->output_offset);
3307 }
3308 else
3309 {
3310 BFD_ASSERT((h->got.offset & 1) == 0);
3311 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3312 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3313 rela.r_addend = 0;
3314 }
3315
3316 loc = htab->srelgot->contents;
3317 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3318 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3319 }
3320
3321 if (h->needs_copy)
3322 {
3323 Elf_Internal_Rela rela;
3324 bfd_byte *loc;
3325
3326 /* This symbols needs a copy reloc. Set it up. */
3327
3328 if (h->dynindx == -1
3329 || (h->root.type != bfd_link_hash_defined
3330 && h->root.type != bfd_link_hash_defweak)
3331 || htab->srelbss == NULL)
3332 abort ();
3333
3334 rela.r_offset = (h->root.u.def.value
3335 + h->root.u.def.section->output_section->vma
3336 + h->root.u.def.section->output_offset);
3337 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3338 rela.r_addend = 0;
3339 loc = htab->srelbss->contents;
3340 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3341 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3342 }
3343
3344 /* Mark some specially defined symbols as absolute. */
3345 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3346 || h == htab->elf.hgot
3347 || h == htab->elf.hplt)
3348 sym->st_shndx = SHN_ABS;
3349
3350 return TRUE;
3351 }
3352
3353 /* Used to decide how to sort relocs in an optimal manner for the
3354 dynamic linker, before writing them out. */
3355
3356 static enum elf_reloc_type_class
3357 elf_s390_reloc_type_class (rela)
3358 const Elf_Internal_Rela *rela;
3359 {
3360 switch ((int) ELF32_R_TYPE (rela->r_info))
3361 {
3362 case R_390_RELATIVE:
3363 return reloc_class_relative;
3364 case R_390_JMP_SLOT:
3365 return reloc_class_plt;
3366 case R_390_COPY:
3367 return reloc_class_copy;
3368 default:
3369 return reloc_class_normal;
3370 }
3371 }
3372
3373 /* Finish up the dynamic sections. */
3374
3375 static bfd_boolean
3376 elf_s390_finish_dynamic_sections (output_bfd, info)
3377 bfd *output_bfd;
3378 struct bfd_link_info *info;
3379 {
3380 struct elf_s390_link_hash_table *htab;
3381 bfd *dynobj;
3382 asection *sdyn;
3383
3384 htab = elf_s390_hash_table (info);
3385 dynobj = htab->elf.dynobj;
3386 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3387
3388 if (htab->elf.dynamic_sections_created)
3389 {
3390 Elf32_External_Dyn *dyncon, *dynconend;
3391
3392 if (sdyn == NULL || htab->sgot == NULL)
3393 abort ();
3394
3395 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3396 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3397 for (; dyncon < dynconend; dyncon++)
3398 {
3399 Elf_Internal_Dyn dyn;
3400 asection *s;
3401
3402 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3403
3404 switch (dyn.d_tag)
3405 {
3406 default:
3407 continue;
3408
3409 case DT_PLTGOT:
3410 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3411 break;
3412
3413 case DT_JMPREL:
3414 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3415 break;
3416
3417 case DT_PLTRELSZ:
3418 s = htab->srelplt->output_section;
3419 dyn.d_un.d_val = s->size;
3420 break;
3421 }
3422
3423 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3424 }
3425
3426 /* Fill in the special first entry in the procedure linkage table. */
3427 if (htab->splt && htab->splt->size > 0)
3428 {
3429 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3430 if (info->shared)
3431 {
3432 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3433 htab->splt->contents );
3434 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3435 htab->splt->contents +4 );
3436 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3437 htab->splt->contents +8 );
3438 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3439 htab->splt->contents +12 );
3440 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3441 htab->splt->contents +16 );
3442 }
3443 else
3444 {
3445 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3446 htab->splt->contents );
3447 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3448 htab->splt->contents +4 );
3449 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3450 htab->splt->contents +8 );
3451 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3452 htab->splt->contents +12 );
3453 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3454 htab->splt->contents +16 );
3455 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3456 htab->splt->contents +20 );
3457 bfd_put_32 (output_bfd,
3458 htab->sgotplt->output_section->vma
3459 + htab->sgotplt->output_offset,
3460 htab->splt->contents + 24);
3461 }
3462 elf_section_data (htab->splt->output_section)
3463 ->this_hdr.sh_entsize = 4;
3464 }
3465
3466 }
3467
3468 if (htab->sgotplt)
3469 {
3470 /* Fill in the first three entries in the global offset table. */
3471 if (htab->sgotplt->size > 0)
3472 {
3473 bfd_put_32 (output_bfd,
3474 (sdyn == NULL ? (bfd_vma) 0
3475 : sdyn->output_section->vma + sdyn->output_offset),
3476 htab->sgotplt->contents);
3477 /* One entry for shared object struct ptr. */
3478 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3479 /* One entry for _dl_runtime_resolve. */
3480 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3481 }
3482
3483 elf_section_data (htab->sgotplt->output_section)
3484 ->this_hdr.sh_entsize = 4;
3485 }
3486 return TRUE;
3487 }
3488
3489 static bfd_boolean
3490 elf_s390_grok_prstatus (abfd, note)
3491 bfd * abfd;
3492 Elf_Internal_Note * note;
3493 {
3494 int offset;
3495 unsigned int size;
3496
3497 switch (note->descsz)
3498 {
3499 default:
3500 return FALSE;
3501
3502 case 224: /* S/390 Linux. */
3503 /* pr_cursig */
3504 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3505
3506 /* pr_pid */
3507 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3508
3509 /* pr_reg */
3510 offset = 72;
3511 size = 144;
3512 break;
3513 }
3514
3515 /* Make a ".reg/999" section. */
3516 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3517 size, note->descpos + offset);
3518 }
3519
3520 /* Return address for Ith PLT stub in section PLT, for relocation REL
3521 or (bfd_vma) -1 if it should not be included. */
3522
3523 static bfd_vma
3524 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3525 const arelent *rel ATTRIBUTE_UNUSED)
3526 {
3527 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3528 }
3529
3530
3531 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3532 #define TARGET_BIG_NAME "elf32-s390"
3533 #define ELF_ARCH bfd_arch_s390
3534 #define ELF_MACHINE_CODE EM_S390
3535 #define ELF_MACHINE_ALT1 EM_S390_OLD
3536 #define ELF_MAXPAGESIZE 0x1000
3537
3538 #define elf_backend_can_gc_sections 1
3539 #define elf_backend_can_refcount 1
3540 #define elf_backend_want_got_plt 1
3541 #define elf_backend_plt_readonly 1
3542 #define elf_backend_want_plt_sym 0
3543 #define elf_backend_got_header_size 12
3544 #define elf_backend_rela_normal 1
3545
3546 #define elf_info_to_howto elf_s390_info_to_howto
3547
3548 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3549 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3550 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3551 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3552
3553 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3554 #define elf_backend_check_relocs elf_s390_check_relocs
3555 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3556 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3557 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3558 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3559 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3560 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3561 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3562 #define elf_backend_relocate_section elf_s390_relocate_section
3563 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3564 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3565 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3566 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3567 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3568
3569 #define bfd_elf32_mkobject elf_s390_mkobject
3570 #define elf_backend_object_p elf_s390_object_p
3571
3572 #include "elf32-target.h"
git-cvsimport of binutils cvsroot