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[binutils.git] / bfd / elf32-s390.c
blob33aad35c1fe9729da104838aaca5c99f4b366061
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28
29 static reloc_howto_type *elf_s390_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf_s390_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf_s390_is_local_label_name
34 PARAMS ((bfd *, const char *));
35 static struct bfd_hash_entry *link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
37 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
38 PARAMS ((bfd *));
39 static bfd_boolean create_got_section
40 PARAMS((bfd *, struct bfd_link_info *));
41 static bfd_boolean elf_s390_create_dynamic_sections
42 PARAMS((bfd *, struct bfd_link_info *));
43 static void elf_s390_copy_indirect_symbol
44 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
45 struct elf_link_hash_entry *));
46 static bfd_boolean elf_s390_check_relocs
47 PARAMS ((bfd *, struct bfd_link_info *, asection *,
48 const Elf_Internal_Rela *));
49 struct elf_s390_link_hash_entry;
50 static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry *));
52 static bfd_boolean elf_s390_adjust_dynamic_symbol
53 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
54 static bfd_boolean allocate_dynrelocs
55 PARAMS ((struct elf_link_hash_entry *, PTR));
56 static bfd_boolean readonly_dynrelocs
57 PARAMS ((struct elf_link_hash_entry *, PTR));
58 static bfd_boolean elf_s390_size_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf_s390_relocate_section
61 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
62 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
63 static bfd_boolean elf_s390_finish_dynamic_symbol
64 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
65 Elf_Internal_Sym *));
66 static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela *));
68 static bfd_boolean elf_s390_finish_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static bfd_boolean elf_s390_object_p
71 PARAMS ((bfd *));
72 static bfd_boolean elf_s390_grok_prstatus
73 PARAMS ((bfd *, Elf_Internal_Note *));
74 static int elf_s390_tls_transition
75 PARAMS ((struct bfd_link_info *, int, int));
76 static bfd_reloc_status_type s390_tls_reloc
77 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
78 static bfd_vma dtpoff_base
79 PARAMS ((struct bfd_link_info *));
80 static bfd_vma tpoff
81 PARAMS ((struct bfd_link_info *, bfd_vma));
82 static void invalid_tls_insn
83 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
84 static bfd_reloc_status_type s390_elf_ldisp_reloc
85 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
86
87 #include "elf/s390.h"
88
89 /* The relocation "howto" table. */
90
91 static reloc_howto_type elf_howto_table[] =
92 {
93 HOWTO (R_390_NONE, /* type */
94 0, /* rightshift */
95 0, /* size (0 = byte, 1 = short, 2 = long) */
96 0, /* bitsize */
97 FALSE, /* pc_relative */
98 0, /* bitpos */
99 complain_overflow_dont, /* complain_on_overflow */
100 bfd_elf_generic_reloc, /* special_function */
101 "R_390_NONE", /* name */
102 FALSE, /* partial_inplace */
103 0, /* src_mask */
104 0, /* dst_mask */
105 FALSE), /* pcrel_offset */
106
107 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
109 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
110 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
111 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
113 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
115 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
117 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
119 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
123 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
125 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
129 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
131 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
133 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
135 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
136 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
137 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
139 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
141 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
143 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
145 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
147 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
149 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
150 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
151 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
152 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
153 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
155 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
157 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
158 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
159 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
160 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
162 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
164 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
165 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
167 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
171 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
172 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
173 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
174 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
175 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
176 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
177 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
178 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
180 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
181 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
182 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
183 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
184 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
185 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
186 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
187 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
188 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
189 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
190 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
191 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
192 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
193 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
194 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
196 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
197 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
198 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
199 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
200 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
201 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
202 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
203 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
204 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
206 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
207 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
208 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
209 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
210 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
211 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
212 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
213 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
214 };
215
216 /* GNU extension to record C++ vtable hierarchy. */
217 static reloc_howto_type elf32_s390_vtinherit_howto =
218 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
219 static reloc_howto_type elf32_s390_vtentry_howto =
220 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
221
222 static reloc_howto_type *
223 elf_s390_reloc_type_lookup (abfd, code)
224 bfd *abfd ATTRIBUTE_UNUSED;
225 bfd_reloc_code_real_type code;
226 {
227 switch (code)
228 {
229 case BFD_RELOC_NONE:
230 return &elf_howto_table[(int) R_390_NONE];
231 case BFD_RELOC_8:
232 return &elf_howto_table[(int) R_390_8];
233 case BFD_RELOC_390_12:
234 return &elf_howto_table[(int) R_390_12];
235 case BFD_RELOC_16:
236 return &elf_howto_table[(int) R_390_16];
237 case BFD_RELOC_32:
238 return &elf_howto_table[(int) R_390_32];
239 case BFD_RELOC_CTOR:
240 return &elf_howto_table[(int) R_390_32];
241 case BFD_RELOC_32_PCREL:
242 return &elf_howto_table[(int) R_390_PC32];
243 case BFD_RELOC_390_GOT12:
244 return &elf_howto_table[(int) R_390_GOT12];
245 case BFD_RELOC_32_GOT_PCREL:
246 return &elf_howto_table[(int) R_390_GOT32];
247 case BFD_RELOC_390_PLT32:
248 return &elf_howto_table[(int) R_390_PLT32];
249 case BFD_RELOC_390_COPY:
250 return &elf_howto_table[(int) R_390_COPY];
251 case BFD_RELOC_390_GLOB_DAT:
252 return &elf_howto_table[(int) R_390_GLOB_DAT];
253 case BFD_RELOC_390_JMP_SLOT:
254 return &elf_howto_table[(int) R_390_JMP_SLOT];
255 case BFD_RELOC_390_RELATIVE:
256 return &elf_howto_table[(int) R_390_RELATIVE];
257 case BFD_RELOC_32_GOTOFF:
258 return &elf_howto_table[(int) R_390_GOTOFF32];
259 case BFD_RELOC_390_GOTPC:
260 return &elf_howto_table[(int) R_390_GOTPC];
261 case BFD_RELOC_390_GOT16:
262 return &elf_howto_table[(int) R_390_GOT16];
263 case BFD_RELOC_16_PCREL:
264 return &elf_howto_table[(int) R_390_PC16];
265 case BFD_RELOC_390_PC16DBL:
266 return &elf_howto_table[(int) R_390_PC16DBL];
267 case BFD_RELOC_390_PLT16DBL:
268 return &elf_howto_table[(int) R_390_PLT16DBL];
269 case BFD_RELOC_390_PC32DBL:
270 return &elf_howto_table[(int) R_390_PC32DBL];
271 case BFD_RELOC_390_PLT32DBL:
272 return &elf_howto_table[(int) R_390_PLT32DBL];
273 case BFD_RELOC_390_GOTPCDBL:
274 return &elf_howto_table[(int) R_390_GOTPCDBL];
275 case BFD_RELOC_390_GOTENT:
276 return &elf_howto_table[(int) R_390_GOTENT];
277 case BFD_RELOC_16_GOTOFF:
278 return &elf_howto_table[(int) R_390_GOTOFF16];
279 case BFD_RELOC_390_GOTPLT12:
280 return &elf_howto_table[(int) R_390_GOTPLT12];
281 case BFD_RELOC_390_GOTPLT16:
282 return &elf_howto_table[(int) R_390_GOTPLT16];
283 case BFD_RELOC_390_GOTPLT32:
284 return &elf_howto_table[(int) R_390_GOTPLT32];
285 case BFD_RELOC_390_GOTPLTENT:
286 return &elf_howto_table[(int) R_390_GOTPLTENT];
287 case BFD_RELOC_390_PLTOFF16:
288 return &elf_howto_table[(int) R_390_PLTOFF16];
289 case BFD_RELOC_390_PLTOFF32:
290 return &elf_howto_table[(int) R_390_PLTOFF32];
291 case BFD_RELOC_390_TLS_LOAD:
292 return &elf_howto_table[(int) R_390_TLS_LOAD];
293 case BFD_RELOC_390_TLS_GDCALL:
294 return &elf_howto_table[(int) R_390_TLS_GDCALL];
295 case BFD_RELOC_390_TLS_LDCALL:
296 return &elf_howto_table[(int) R_390_TLS_LDCALL];
297 case BFD_RELOC_390_TLS_GD32:
298 return &elf_howto_table[(int) R_390_TLS_GD32];
299 case BFD_RELOC_390_TLS_GOTIE12:
300 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
301 case BFD_RELOC_390_TLS_GOTIE32:
302 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
303 case BFD_RELOC_390_TLS_LDM32:
304 return &elf_howto_table[(int) R_390_TLS_LDM32];
305 case BFD_RELOC_390_TLS_IE32:
306 return &elf_howto_table[(int) R_390_TLS_IE32];
307 case BFD_RELOC_390_TLS_IEENT:
308 return &elf_howto_table[(int) R_390_TLS_IEENT];
309 case BFD_RELOC_390_TLS_LE32:
310 return &elf_howto_table[(int) R_390_TLS_LE32];
311 case BFD_RELOC_390_TLS_LDO32:
312 return &elf_howto_table[(int) R_390_TLS_LDO32];
313 case BFD_RELOC_390_TLS_DTPMOD:
314 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
315 case BFD_RELOC_390_TLS_DTPOFF:
316 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
317 case BFD_RELOC_390_TLS_TPOFF:
318 return &elf_howto_table[(int) R_390_TLS_TPOFF];
319 case BFD_RELOC_390_20:
320 return &elf_howto_table[(int) R_390_20];
321 case BFD_RELOC_390_GOT20:
322 return &elf_howto_table[(int) R_390_GOT20];
323 case BFD_RELOC_390_GOTPLT20:
324 return &elf_howto_table[(int) R_390_GOTPLT20];
325 case BFD_RELOC_390_TLS_GOTIE20:
326 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
327 case BFD_RELOC_VTABLE_INHERIT:
328 return &elf32_s390_vtinherit_howto;
329 case BFD_RELOC_VTABLE_ENTRY:
330 return &elf32_s390_vtentry_howto;
331 default:
332 break;
333 }
334 return 0;
335 }
336
337 static reloc_howto_type *
338 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
339 const char *r_name)
340 {
341 unsigned int i;
342
343 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
344 if (elf_howto_table[i].name != NULL
345 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
346 return &elf_howto_table[i];
347
348 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
349 return &elf32_s390_vtinherit_howto;
350 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
351 return &elf32_s390_vtentry_howto;
352
353 return NULL;
354 }
355
356 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
357 and elf32-s390.c has its own copy. */
358
359 static void
360 elf_s390_info_to_howto (abfd, cache_ptr, dst)
361 bfd *abfd ATTRIBUTE_UNUSED;
362 arelent *cache_ptr;
363 Elf_Internal_Rela *dst;
364 {
365 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
366 switch (r_type)
367 {
368 case R_390_GNU_VTINHERIT:
369 cache_ptr->howto = &elf32_s390_vtinherit_howto;
370 break;
371
372 case R_390_GNU_VTENTRY:
373 cache_ptr->howto = &elf32_s390_vtentry_howto;
374 break;
375
376 default:
377 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
378 {
379 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
380 abfd, (int) r_type);
381 r_type = R_390_NONE;
382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
384 }
385 }
386
387 /* A relocation function which doesn't do anything. */
388 static bfd_reloc_status_type
389 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
390 output_bfd, error_message)
391 bfd *abfd ATTRIBUTE_UNUSED;
392 arelent *reloc_entry;
393 asymbol *symbol ATTRIBUTE_UNUSED;
394 PTR data ATTRIBUTE_UNUSED;
395 asection *input_section;
396 bfd *output_bfd;
397 char **error_message ATTRIBUTE_UNUSED;
398 {
399 if (output_bfd)
400 reloc_entry->address += input_section->output_offset;
401 return bfd_reloc_ok;
402 }
403
404 /* Handle the large displacement relocs. */
405 static bfd_reloc_status_type
406 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
407 output_bfd, error_message)
408 bfd *abfd ATTRIBUTE_UNUSED;
409 arelent *reloc_entry;
410 asymbol *symbol;
411 PTR data ATTRIBUTE_UNUSED;
412 asection *input_section;
413 bfd *output_bfd;
414 char **error_message ATTRIBUTE_UNUSED;
415 {
416 reloc_howto_type *howto = reloc_entry->howto;
417 bfd_vma relocation;
418 bfd_vma insn;
419
420 if (output_bfd != (bfd *) NULL
421 && (symbol->flags & BSF_SECTION_SYM) == 0
422 && (! howto->partial_inplace
423 || reloc_entry->addend == 0))
424 {
425 reloc_entry->address += input_section->output_offset;
426 return bfd_reloc_ok;
427 }
428
429 if (output_bfd != NULL)
430 return bfd_reloc_continue;
431
432 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
433 return bfd_reloc_outofrange;
434
435 relocation = (symbol->value
436 + symbol->section->output_section->vma
437 + symbol->section->output_offset);
438 relocation += reloc_entry->addend;
439 if (howto->pc_relative)
440 {
441 relocation -= (input_section->output_section->vma
442 + input_section->output_offset);
443 relocation -= reloc_entry->address;
444 }
445
446 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
447 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
448 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
449
450 if ((bfd_signed_vma) relocation < - 0x80000
451 || (bfd_signed_vma) relocation > 0x7ffff)
452 return bfd_reloc_overflow;
453 else
454 return bfd_reloc_ok;
455 }
456
457 static bfd_boolean
458 elf_s390_is_local_label_name (abfd, name)
459 bfd *abfd;
460 const char *name;
461 {
462 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
463 return TRUE;
464
465 return _bfd_elf_is_local_label_name (abfd, name);
466 }
467
468 /* Functions for the 390 ELF linker. */
469
470 /* The name of the dynamic interpreter. This is put in the .interp
471 section. */
472
473 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
474
475 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
476 copying dynamic variables from a shared lib into an app's dynbss
477 section, and instead use a dynamic relocation to point into the
478 shared lib. */
479 #define ELIMINATE_COPY_RELOCS 1
480
481 /* The size in bytes of the first entry in the procedure linkage table. */
482 #define PLT_FIRST_ENTRY_SIZE 32
483 /* The size in bytes of an entry in the procedure linkage table. */
484 #define PLT_ENTRY_SIZE 32
485
486 #define GOT_ENTRY_SIZE 4
487
488 /* The first three entries in a procedure linkage table are reserved,
489 and the initial contents are unimportant (we zero them out).
490 Subsequent entries look like this. See the SVR4 ABI 386
491 supplement to see how this works. */
492
493 /* For the s390, simple addr offset can only be 0 - 4096.
494 To use the full 2 GB address space, several instructions
495 are needed to load an address in a register and execute
496 a branch( or just saving the address)
497
498 Furthermore, only r 0 and 1 are free to use!!! */
499
500 /* The first 3 words in the GOT are then reserved.
501 Word 0 is the address of the dynamic table.
502 Word 1 is a pointer to a structure describing the object
503 Word 2 is used to point to the loader entry address.
504
505 The code for position independent PLT entries looks like this:
506
507 r12 holds addr of the current GOT at entry to the PLT
508
509 The GOT holds the address in the PLT to be executed.
510 The loader then gets:
511 24(15) = Pointer to the structure describing the object.
512 28(15) = Offset in symbol table
513
514 The loader must then find the module where the function is
515 and insert the address in the GOT.
516
517 Note: 390 can only address +- 64 K relative.
518 We check if offset > 65536, then make a relative branch -64xxx
519 back to a previous defined branch
520
521 PLT1: BASR 1,0 # 2 bytes
522 L 1,22(1) # 4 bytes Load offset in GOT in r 1
523 L 1,(1,12) # 4 bytes Load address from GOT in r1
524 BCR 15,1 # 2 bytes Jump to address
525 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
526 L 1,14(1) # 4 bytes Load offset in symol table in r1
527 BRC 15,-x # 4 bytes Jump to start of PLT
528 .word 0 # 2 bytes filler
529 .long ? # 4 bytes offset in GOT
530 .long ? # 4 bytes offset into symbol table
531
532 This was the general case. There are two additional, optimizes PLT
533 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
534 First the one for GOT offsets < 4096:
535
536 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
537 BCR 15,1 # 2 bytes Jump to address
538 .word 0,0,0 # 6 bytes filler
539 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
540 L 1,14(1) # 4 bytes Load offset in symbol table in r1
541 BRC 15,-x # 4 bytes Jump to start of PLT
542 .word 0,0,0 # 6 bytes filler
543 .long ? # 4 bytes offset into symbol table
544
545 Second the one for GOT offsets < 32768:
546
547 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
548 L 1,(1,12) # 4 bytes Load address from GOT to r1
549 BCR 15,1 # 2 bytes Jump to address
550 .word 0 # 2 bytes filler
551 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
552 L 1,14(1) # 4 bytes Load offset in symbol table in r1
553 BRC 15,-x # 4 bytes Jump to start of PLT
554 .word 0,0,0 # 6 bytes filler
555 .long ? # 4 bytes offset into symbol table
556
557 Total = 32 bytes per PLT entry
558
559 The code for static build PLT entries looks like this:
560
561 PLT1: BASR 1,0 # 2 bytes
562 L 1,22(1) # 4 bytes Load address of GOT entry
563 L 1,0(0,1) # 4 bytes Load address from GOT in r1
564 BCR 15,1 # 2 bytes Jump to address
565 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
566 L 1,14(1) # 4 bytes Load offset in symbol table in r1
567 BRC 15,-x # 4 bytes Jump to start of PLT
568 .word 0 # 2 bytes filler
569 .long ? # 4 bytes address of GOT entry
570 .long ? # 4 bytes offset into symbol table */
571
572 #define PLT_PIC_ENTRY_WORD0 0x0d105810
573 #define PLT_PIC_ENTRY_WORD1 0x10165811
574 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
575 #define PLT_PIC_ENTRY_WORD3 0x0d105810
576 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
577
578 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
579 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
580 #define PLT_PIC12_ENTRY_WORD2 0x00000000
581 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
582 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
583
584 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
585 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
586 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
587 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
588 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
589
590 #define PLT_ENTRY_WORD0 0x0d105810
591 #define PLT_ENTRY_WORD1 0x10165810
592 #define PLT_ENTRY_WORD2 0x100007f1
593 #define PLT_ENTRY_WORD3 0x0d105810
594 #define PLT_ENTRY_WORD4 0x100ea7f4
595
596 /* The first PLT entry pushes the offset into the symbol table
597 from R1 onto the stack at 8(15) and the loader object info
598 at 12(15), loads the loader address in R1 and jumps to it. */
599
600 /* The first entry in the PLT for PIC code:
601
602 PLT0:
603 ST 1,28(15) # R1 has offset into symbol table
604 L 1,4(12) # Get loader ino(object struct address)
605 ST 1,24(15) # Store address
606 L 1,8(12) # Entry address of loader in R1
607 BR 1 # Jump to loader
608
609 The first entry in the PLT for static code:
610
611 PLT0:
612 ST 1,28(15) # R1 has offset into symbol table
613 BASR 1,0
614 L 1,18(0,1) # Get address of GOT
615 MVC 24(4,15),4(1) # Move loader ino to stack
616 L 1,8(1) # Get address of loader
617 BR 1 # Jump to loader
618 .word 0 # filler
619 .long got # address of GOT */
620
621 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
622 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
623 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
624 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
625 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
626
627 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
628 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
629 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
630 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
631 #define PLT_FIRST_ENTRY_WORD4 0x58101008
632 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
633
634 /* The s390 linker needs to keep track of the number of relocs that it
635 decides to copy as dynamic relocs in check_relocs for each symbol.
636 This is so that it can later discard them if they are found to be
637 unnecessary. We store the information in a field extending the
638 regular ELF linker hash table. */
639
640 struct elf_s390_dyn_relocs
641 {
642 struct elf_s390_dyn_relocs *next;
643
644 /* The input section of the reloc. */
645 asection *sec;
646
647 /* Total number of relocs copied for the input section. */
648 bfd_size_type count;
649
650 /* Number of pc-relative relocs copied for the input section. */
651 bfd_size_type pc_count;
652 };
653
654 /* s390 ELF linker hash entry. */
655
656 struct elf_s390_link_hash_entry
657 {
658 struct elf_link_hash_entry elf;
659
660 /* Track dynamic relocs copied for this symbol. */
661 struct elf_s390_dyn_relocs *dyn_relocs;
662
663 /* Number of GOTPLT references for a function. */
664 bfd_signed_vma gotplt_refcount;
665
666 #define GOT_UNKNOWN 0
667 #define GOT_NORMAL 1
668 #define GOT_TLS_GD 2
669 #define GOT_TLS_IE 3
670 #define GOT_TLS_IE_NLT 4
671 unsigned char tls_type;
672 };
673
674 #define elf_s390_hash_entry(ent) \
675 ((struct elf_s390_link_hash_entry *)(ent))
676
677 struct elf_s390_obj_tdata
678 {
679 struct elf_obj_tdata root;
680
681 /* tls_type for each local got entry. */
682 char *local_got_tls_type;
683 };
684
685 #define elf_s390_tdata(abfd) \
686 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
687
688 #define elf_s390_local_got_tls_type(abfd) \
689 (elf_s390_tdata (abfd)->local_got_tls_type)
690
691 static bfd_boolean
692 elf_s390_mkobject (bfd *abfd)
693 {
694 if (abfd->tdata.any == NULL)
695 {
696 bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
697 abfd->tdata.any = bfd_zalloc (abfd, amt);
698 if (abfd->tdata.any == NULL)
699 return FALSE;
700 }
701 return bfd_elf_mkobject (abfd);
702 }
703
704 static bfd_boolean
705 elf_s390_object_p (abfd)
706 bfd *abfd;
707 {
708 /* Set the right machine number for an s390 elf32 file. */
709 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
710 }
711
712 /* s390 ELF linker hash table. */
713
714 struct elf_s390_link_hash_table
715 {
716 struct elf_link_hash_table elf;
717
718 /* Short-cuts to get to dynamic linker sections. */
719 asection *sgot;
720 asection *sgotplt;
721 asection *srelgot;
722 asection *splt;
723 asection *srelplt;
724 asection *sdynbss;
725 asection *srelbss;
726
727 union {
728 bfd_signed_vma refcount;
729 bfd_vma offset;
730 } tls_ldm_got;
731
732 /* Small local sym to section mapping cache. */
733 struct sym_sec_cache sym_sec;
734 };
735
736 /* Get the s390 ELF linker hash table from a link_info structure. */
737
738 #define elf_s390_hash_table(p) \
739 ((struct elf_s390_link_hash_table *) ((p)->hash))
740
741 /* Create an entry in an s390 ELF linker hash table. */
742
743 static struct bfd_hash_entry *
744 link_hash_newfunc (entry, table, string)
745 struct bfd_hash_entry *entry;
746 struct bfd_hash_table *table;
747 const char *string;
748 {
749 /* Allocate the structure if it has not already been allocated by a
750 subclass. */
751 if (entry == NULL)
752 {
753 entry = bfd_hash_allocate (table,
754 sizeof (struct elf_s390_link_hash_entry));
755 if (entry == NULL)
756 return entry;
757 }
758
759 /* Call the allocation method of the superclass. */
760 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
761 if (entry != NULL)
762 {
763 struct elf_s390_link_hash_entry *eh;
764
765 eh = (struct elf_s390_link_hash_entry *) entry;
766 eh->dyn_relocs = NULL;
767 eh->gotplt_refcount = 0;
768 eh->tls_type = GOT_UNKNOWN;
769 }
770
771 return entry;
772 }
773
774 /* Create an s390 ELF linker hash table. */
775
776 static struct bfd_link_hash_table *
777 elf_s390_link_hash_table_create (abfd)
778 bfd *abfd;
779 {
780 struct elf_s390_link_hash_table *ret;
781 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
782
783 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
784 if (ret == NULL)
785 return NULL;
786
787 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
788 sizeof (struct elf_s390_link_hash_entry)))
789 {
790 free (ret);
791 return NULL;
792 }
793
794 ret->sgot = NULL;
795 ret->sgotplt = NULL;
796 ret->srelgot = NULL;
797 ret->splt = NULL;
798 ret->srelplt = NULL;
799 ret->sdynbss = NULL;
800 ret->srelbss = NULL;
801 ret->tls_ldm_got.refcount = 0;
802 ret->sym_sec.abfd = NULL;
803
804 return &ret->elf.root;
805 }
806
807 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
808 shortcuts to them in our hash table. */
809
810 static bfd_boolean
811 create_got_section (dynobj, info)
812 bfd *dynobj;
813 struct bfd_link_info *info;
814 {
815 struct elf_s390_link_hash_table *htab;
816
817 if (! _bfd_elf_create_got_section (dynobj, info))
818 return FALSE;
819
820 htab = elf_s390_hash_table (info);
821 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
822 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
823 if (!htab->sgot || !htab->sgotplt)
824 abort ();
825
826 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
827 (SEC_ALLOC | SEC_LOAD
828 | SEC_HAS_CONTENTS
829 | SEC_IN_MEMORY
830 | SEC_LINKER_CREATED
831 | SEC_READONLY));
832 if (htab->srelgot == NULL
833 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
834 return FALSE;
835 return TRUE;
836 }
837
838 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
839 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
840 hash table. */
841
842 static bfd_boolean
843 elf_s390_create_dynamic_sections (dynobj, info)
844 bfd *dynobj;
845 struct bfd_link_info *info;
846 {
847 struct elf_s390_link_hash_table *htab;
848
849 htab = elf_s390_hash_table (info);
850 if (!htab->sgot && !create_got_section (dynobj, info))
851 return FALSE;
852
853 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
854 return FALSE;
855
856 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
857 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
858 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
859 if (!info->shared)
860 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
861
862 if (!htab->splt || !htab->srelplt || !htab->sdynbss
863 || (!info->shared && !htab->srelbss))
864 abort ();
865
866 return TRUE;
867 }
868
869 /* Copy the extra info we tack onto an elf_link_hash_entry. */
870
871 static void
872 elf_s390_copy_indirect_symbol (info, dir, ind)
873 struct bfd_link_info *info;
874 struct elf_link_hash_entry *dir, *ind;
875 {
876 struct elf_s390_link_hash_entry *edir, *eind;
877
878 edir = (struct elf_s390_link_hash_entry *) dir;
879 eind = (struct elf_s390_link_hash_entry *) ind;
880
881 if (eind->dyn_relocs != NULL)
882 {
883 if (edir->dyn_relocs != NULL)
884 {
885 struct elf_s390_dyn_relocs **pp;
886 struct elf_s390_dyn_relocs *p;
887
888 /* Add reloc counts against the indirect sym to the direct sym
889 list. Merge any entries against the same section. */
890 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
891 {
892 struct elf_s390_dyn_relocs *q;
893
894 for (q = edir->dyn_relocs; q != NULL; q = q->next)
895 if (q->sec == p->sec)
896 {
897 q->pc_count += p->pc_count;
898 q->count += p->count;
899 *pp = p->next;
900 break;
901 }
902 if (q == NULL)
903 pp = &p->next;
904 }
905 *pp = edir->dyn_relocs;
906 }
907
908 edir->dyn_relocs = eind->dyn_relocs;
909 eind->dyn_relocs = NULL;
910 }
911
912 if (ind->root.type == bfd_link_hash_indirect
913 && dir->got.refcount <= 0)
914 {
915 edir->tls_type = eind->tls_type;
916 eind->tls_type = GOT_UNKNOWN;
917 }
918
919 if (ELIMINATE_COPY_RELOCS
920 && ind->root.type != bfd_link_hash_indirect
921 && dir->dynamic_adjusted)
922 {
923 /* If called to transfer flags for a weakdef during processing
924 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
925 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
926 dir->ref_dynamic |= ind->ref_dynamic;
927 dir->ref_regular |= ind->ref_regular;
928 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
929 dir->needs_plt |= ind->needs_plt;
930 }
931 else
932 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
933 }
934
935 static int
936 elf_s390_tls_transition (info, r_type, is_local)
937 struct bfd_link_info *info;
938 int r_type;
939 int is_local;
940 {
941 if (info->shared)
942 return r_type;
943
944 switch (r_type)
945 {
946 case R_390_TLS_GD32:
947 case R_390_TLS_IE32:
948 if (is_local)
949 return R_390_TLS_LE32;
950 return R_390_TLS_IE32;
951 case R_390_TLS_GOTIE32:
952 if (is_local)
953 return R_390_TLS_LE32;
954 return R_390_TLS_GOTIE32;
955 case R_390_TLS_LDM32:
956 return R_390_TLS_LE32;
957 }
958
959 return r_type;
960 }
961
962 /* Look through the relocs for a section during the first phase, and
963 allocate space in the global offset table or procedure linkage
964 table. */
965
966 static bfd_boolean
967 elf_s390_check_relocs (abfd, info, sec, relocs)
968 bfd *abfd;
969 struct bfd_link_info *info;
970 asection *sec;
971 const Elf_Internal_Rela *relocs;
972 {
973 struct elf_s390_link_hash_table *htab;
974 Elf_Internal_Shdr *symtab_hdr;
975 struct elf_link_hash_entry **sym_hashes;
976 const Elf_Internal_Rela *rel;
977 const Elf_Internal_Rela *rel_end;
978 asection *sreloc;
979 bfd_signed_vma *local_got_refcounts;
980 int tls_type, old_tls_type;
981
982 if (info->relocatable)
983 return TRUE;
984
985 htab = elf_s390_hash_table (info);
986 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
987 sym_hashes = elf_sym_hashes (abfd);
988 local_got_refcounts = elf_local_got_refcounts (abfd);
989
990 sreloc = NULL;
991
992 rel_end = relocs + sec->reloc_count;
993 for (rel = relocs; rel < rel_end; rel++)
994 {
995 unsigned int r_type;
996 unsigned long r_symndx;
997 struct elf_link_hash_entry *h;
998
999 r_symndx = ELF32_R_SYM (rel->r_info);
1000
1001 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1002 {
1003 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1004 abfd, r_symndx);
1005 return FALSE;
1006 }
1007
1008 if (r_symndx < symtab_hdr->sh_info)
1009 h = NULL;
1010 else
1011 {
1012 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1013 while (h->root.type == bfd_link_hash_indirect
1014 || h->root.type == bfd_link_hash_warning)
1015 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1016 }
1017
1018 /* Create got section and local_got_refcounts array if they
1019 are needed. */
1020 r_type = elf_s390_tls_transition (info,
1021 ELF32_R_TYPE (rel->r_info),
1022 h == NULL);
1023 switch (r_type)
1024 {
1025 case R_390_GOT12:
1026 case R_390_GOT16:
1027 case R_390_GOT20:
1028 case R_390_GOT32:
1029 case R_390_GOTENT:
1030 case R_390_GOTPLT12:
1031 case R_390_GOTPLT16:
1032 case R_390_GOTPLT20:
1033 case R_390_GOTPLT32:
1034 case R_390_GOTPLTENT:
1035 case R_390_TLS_GD32:
1036 case R_390_TLS_GOTIE12:
1037 case R_390_TLS_GOTIE20:
1038 case R_390_TLS_GOTIE32:
1039 case R_390_TLS_IEENT:
1040 case R_390_TLS_IE32:
1041 case R_390_TLS_LDM32:
1042 if (h == NULL
1043 && local_got_refcounts == NULL)
1044 {
1045 bfd_size_type size;
1046
1047 size = symtab_hdr->sh_info;
1048 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1049 local_got_refcounts = ((bfd_signed_vma *)
1050 bfd_zalloc (abfd, size));
1051 if (local_got_refcounts == NULL)
1052 return FALSE;
1053 elf_local_got_refcounts (abfd) = local_got_refcounts;
1054 elf_s390_local_got_tls_type (abfd)
1055 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1056 }
1057 /* Fall through. */
1058 case R_390_GOTOFF16:
1059 case R_390_GOTOFF32:
1060 case R_390_GOTPC:
1061 case R_390_GOTPCDBL:
1062 if (htab->sgot == NULL)
1063 {
1064 if (htab->elf.dynobj == NULL)
1065 htab->elf.dynobj = abfd;
1066 if (!create_got_section (htab->elf.dynobj, info))
1067 return FALSE;
1068 }
1069 }
1070
1071 switch (r_type)
1072 {
1073 case R_390_GOTOFF16:
1074 case R_390_GOTOFF32:
1075 case R_390_GOTPC:
1076 case R_390_GOTPCDBL:
1077 /* Got is created, nothing to be done. */
1078 break;
1079
1080 case R_390_PLT16DBL:
1081 case R_390_PLT32DBL:
1082 case R_390_PLT32:
1083 case R_390_PLTOFF16:
1084 case R_390_PLTOFF32:
1085 /* This symbol requires a procedure linkage table entry. We
1086 actually build the entry in adjust_dynamic_symbol,
1087 because this might be a case of linking PIC code which is
1088 never referenced by a dynamic object, in which case we
1089 don't need to generate a procedure linkage table entry
1090 after all. */
1091
1092 /* If this is a local symbol, we resolve it directly without
1093 creating a procedure linkage table entry. */
1094 if (h != NULL)
1095 {
1096 h->needs_plt = 1;
1097 h->plt.refcount += 1;
1098 }
1099 break;
1100
1101 case R_390_GOTPLT12:
1102 case R_390_GOTPLT16:
1103 case R_390_GOTPLT20:
1104 case R_390_GOTPLT32:
1105 case R_390_GOTPLTENT:
1106 /* This symbol requires either a procedure linkage table entry
1107 or an entry in the local got. We actually build the entry
1108 in adjust_dynamic_symbol because whether this is really a
1109 global reference can change and with it the fact if we have
1110 to create a plt entry or a local got entry. To be able to
1111 make a once global symbol a local one we have to keep track
1112 of the number of gotplt references that exist for this
1113 symbol. */
1114 if (h != NULL)
1115 {
1116 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1117 h->needs_plt = 1;
1118 h->plt.refcount += 1;
1119 }
1120 else
1121 local_got_refcounts[r_symndx] += 1;
1122 break;
1123
1124 case R_390_TLS_LDM32:
1125 htab->tls_ldm_got.refcount += 1;
1126 break;
1127
1128 case R_390_TLS_IE32:
1129 case R_390_TLS_GOTIE12:
1130 case R_390_TLS_GOTIE20:
1131 case R_390_TLS_GOTIE32:
1132 case R_390_TLS_IEENT:
1133 if (info->shared)
1134 info->flags |= DF_STATIC_TLS;
1135 /* Fall through. */
1136
1137 case R_390_GOT12:
1138 case R_390_GOT16:
1139 case R_390_GOT20:
1140 case R_390_GOT32:
1141 case R_390_GOTENT:
1142 case R_390_TLS_GD32:
1143 /* This symbol requires a global offset table entry. */
1144 switch (r_type)
1145 {
1146 default:
1147 case R_390_GOT12:
1148 case R_390_GOT16:
1149 case R_390_GOT20:
1150 case R_390_GOT32:
1151 case R_390_GOTENT:
1152 tls_type = GOT_NORMAL;
1153 break;
1154 case R_390_TLS_GD32:
1155 tls_type = GOT_TLS_GD;
1156 break;
1157 case R_390_TLS_IE32:
1158 case R_390_TLS_GOTIE32:
1159 tls_type = GOT_TLS_IE;
1160 break;
1161 case R_390_TLS_GOTIE12:
1162 case R_390_TLS_GOTIE20:
1163 case R_390_TLS_IEENT:
1164 tls_type = GOT_TLS_IE_NLT;
1165 break;
1166 }
1167
1168 if (h != NULL)
1169 {
1170 h->got.refcount += 1;
1171 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1172 }
1173 else
1174 {
1175 local_got_refcounts[r_symndx] += 1;
1176 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1177 }
1178 /* If a TLS symbol is accessed using IE at least once,
1179 there is no point to use dynamic model for it. */
1180 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1181 {
1182 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1183 {
1184 (*_bfd_error_handler)
1185 (_("%B: `%s' accessed both as normal and thread local symbol"),
1186 abfd, h->root.root.string);
1187 return FALSE;
1188 }
1189 if (old_tls_type > tls_type)
1190 tls_type = old_tls_type;
1191 }
1192
1193 if (old_tls_type != tls_type)
1194 {
1195 if (h != NULL)
1196 elf_s390_hash_entry (h)->tls_type = tls_type;
1197 else
1198 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1199 }
1200
1201 if (r_type != R_390_TLS_IE32)
1202 break;
1203 /* Fall through. */
1204
1205 case R_390_TLS_LE32:
1206 if (!info->shared)
1207 break;
1208 info->flags |= DF_STATIC_TLS;
1209 /* Fall through. */
1210
1211 case R_390_8:
1212 case R_390_16:
1213 case R_390_32:
1214 case R_390_PC16:
1215 case R_390_PC16DBL:
1216 case R_390_PC32DBL:
1217 case R_390_PC32:
1218 if (h != NULL && !info->shared)
1219 {
1220 /* If this reloc is in a read-only section, we might
1221 need a copy reloc. We can't check reliably at this
1222 stage whether the section is read-only, as input
1223 sections have not yet been mapped to output sections.
1224 Tentatively set the flag for now, and correct in
1225 adjust_dynamic_symbol. */
1226 h->non_got_ref = 1;
1227
1228 /* We may need a .plt entry if the function this reloc
1229 refers to is in a shared lib. */
1230 h->plt.refcount += 1;
1231 }
1232
1233 /* If we are creating a shared library, and this is a reloc
1234 against a global symbol, or a non PC relative reloc
1235 against a local symbol, then we need to copy the reloc
1236 into the shared library. However, if we are linking with
1237 -Bsymbolic, we do not need to copy a reloc against a
1238 global symbol which is defined in an object we are
1239 including in the link (i.e., DEF_REGULAR is set). At
1240 this point we have not seen all the input files, so it is
1241 possible that DEF_REGULAR is not set now but will be set
1242 later (it is never cleared). In case of a weak definition,
1243 DEF_REGULAR may be cleared later by a strong definition in
1244 a shared library. We account for that possibility below by
1245 storing information in the relocs_copied field of the hash
1246 table entry. A similar situation occurs when creating
1247 shared libraries and symbol visibility changes render the
1248 symbol local.
1249
1250 If on the other hand, we are creating an executable, we
1251 may need to keep relocations for symbols satisfied by a
1252 dynamic library if we manage to avoid copy relocs for the
1253 symbol. */
1254 if ((info->shared
1255 && (sec->flags & SEC_ALLOC) != 0
1256 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1257 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1258 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1259 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1260 || (h != NULL
1261 && (! info->symbolic
1262 || h->root.type == bfd_link_hash_defweak
1263 || !h->def_regular))))
1264 || (ELIMINATE_COPY_RELOCS
1265 && !info->shared
1266 && (sec->flags & SEC_ALLOC) != 0
1267 && h != NULL
1268 && (h->root.type == bfd_link_hash_defweak
1269 || !h->def_regular)))
1270 {
1271 struct elf_s390_dyn_relocs *p;
1272 struct elf_s390_dyn_relocs **head;
1273
1274 /* We must copy these reloc types into the output file.
1275 Create a reloc section in dynobj and make room for
1276 this reloc. */
1277 if (sreloc == NULL)
1278 {
1279 const char *name;
1280 bfd *dynobj;
1281
1282 name = (bfd_elf_string_from_elf_section
1283 (abfd,
1284 elf_elfheader (abfd)->e_shstrndx,
1285 elf_section_data (sec)->rel_hdr.sh_name));
1286 if (name == NULL)
1287 return FALSE;
1288
1289 if (! CONST_STRNEQ (name, ".rela")
1290 || strcmp (bfd_get_section_name (abfd, sec),
1291 name + 5) != 0)
1292 {
1293 (*_bfd_error_handler)
1294 (_("%B: bad relocation section name `%s\'"),
1295 abfd, name);
1296 }
1297
1298 if (htab->elf.dynobj == NULL)
1299 htab->elf.dynobj = abfd;
1300
1301 dynobj = htab->elf.dynobj;
1302 sreloc = bfd_get_section_by_name (dynobj, name);
1303 if (sreloc == NULL)
1304 {
1305 flagword flags;
1306
1307 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1308 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1309 if ((sec->flags & SEC_ALLOC) != 0)
1310 flags |= SEC_ALLOC | SEC_LOAD;
1311 sreloc = bfd_make_section_with_flags (dynobj,
1312 name,
1313 flags);
1314 if (sreloc == NULL
1315 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1316 return FALSE;
1317 }
1318 elf_section_data (sec)->sreloc = sreloc;
1319 }
1320
1321 /* If this is a global symbol, we count the number of
1322 relocations we need for this symbol. */
1323 if (h != NULL)
1324 {
1325 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1326 }
1327 else
1328 {
1329 /* Track dynamic relocs needed for local syms too.
1330 We really need local syms available to do this
1331 easily. Oh well. */
1332 asection *s;
1333 void *vpp;
1334
1335 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1336 sec, r_symndx);
1337 if (s == NULL)
1338 return FALSE;
1339
1340 vpp = &elf_section_data (s)->local_dynrel;
1341 head = (struct elf_s390_dyn_relocs **) vpp;
1342 }
1343
1344 p = *head;
1345 if (p == NULL || p->sec != sec)
1346 {
1347 bfd_size_type amt = sizeof *p;
1348
1349 p = ((struct elf_s390_dyn_relocs *)
1350 bfd_alloc (htab->elf.dynobj, amt));
1351 if (p == NULL)
1352 return FALSE;
1353 p->next = *head;
1354 *head = p;
1355 p->sec = sec;
1356 p->count = 0;
1357 p->pc_count = 0;
1358 }
1359
1360 p->count += 1;
1361 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1362 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1363 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1364 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1365 p->pc_count += 1;
1366 }
1367 break;
1368
1369 /* This relocation describes the C++ object vtable hierarchy.
1370 Reconstruct it for later use during GC. */
1371 case R_390_GNU_VTINHERIT:
1372 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1373 return FALSE;
1374 break;
1375
1376 /* This relocation describes which C++ vtable entries are actually
1377 used. Record for later use during GC. */
1378 case R_390_GNU_VTENTRY:
1379 BFD_ASSERT (h != NULL);
1380 if (h != NULL
1381 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1382 return FALSE;
1383 break;
1384
1385 default:
1386 break;
1387 }
1388 }
1389
1390 return TRUE;
1391 }
1392
1393 /* Return the section that should be marked against GC for a given
1394 relocation. */
1395
1396 static asection *
1397 elf_s390_gc_mark_hook (asection *sec,
1398 struct bfd_link_info *info,
1399 Elf_Internal_Rela *rel,
1400 struct elf_link_hash_entry *h,
1401 Elf_Internal_Sym *sym)
1402 {
1403 if (h != NULL)
1404 switch (ELF32_R_TYPE (rel->r_info))
1405 {
1406 case R_390_GNU_VTINHERIT:
1407 case R_390_GNU_VTENTRY:
1408 return NULL;
1409 }
1410 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1411
1412 }
1413
1414 /* Update the got entry reference counts for the section being removed. */
1415
1416 static bfd_boolean
1417 elf_s390_gc_sweep_hook (bfd *abfd,
1418 struct bfd_link_info *info,
1419 asection *sec,
1420 const Elf_Internal_Rela *relocs)
1421 {
1422 Elf_Internal_Shdr *symtab_hdr;
1423 struct elf_link_hash_entry **sym_hashes;
1424 bfd_signed_vma *local_got_refcounts;
1425 const Elf_Internal_Rela *rel, *relend;
1426
1427 elf_section_data (sec)->local_dynrel = NULL;
1428
1429 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1430 sym_hashes = elf_sym_hashes (abfd);
1431 local_got_refcounts = elf_local_got_refcounts (abfd);
1432
1433 relend = relocs + sec->reloc_count;
1434 for (rel = relocs; rel < relend; rel++)
1435 {
1436 unsigned long r_symndx;
1437 unsigned int r_type;
1438 struct elf_link_hash_entry *h = NULL;
1439
1440 r_symndx = ELF32_R_SYM (rel->r_info);
1441 if (r_symndx >= symtab_hdr->sh_info)
1442 {
1443 struct elf_s390_link_hash_entry *eh;
1444 struct elf_s390_dyn_relocs **pp;
1445 struct elf_s390_dyn_relocs *p;
1446
1447 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1448 while (h->root.type == bfd_link_hash_indirect
1449 || h->root.type == bfd_link_hash_warning)
1450 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1451 eh = (struct elf_s390_link_hash_entry *) h;
1452
1453 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1454 if (p->sec == sec)
1455 {
1456 /* Everything must go for SEC. */
1457 *pp = p->next;
1458 break;
1459 }
1460 }
1461
1462 r_type = ELF32_R_TYPE (rel->r_info);
1463 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1464 switch (r_type)
1465 {
1466 case R_390_TLS_LDM32:
1467 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1468 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1469 break;
1470
1471 case R_390_TLS_GD32:
1472 case R_390_TLS_IE32:
1473 case R_390_TLS_GOTIE12:
1474 case R_390_TLS_GOTIE20:
1475 case R_390_TLS_GOTIE32:
1476 case R_390_TLS_IEENT:
1477 case R_390_GOT12:
1478 case R_390_GOT16:
1479 case R_390_GOT20:
1480 case R_390_GOT32:
1481 case R_390_GOTOFF16:
1482 case R_390_GOTOFF32:
1483 case R_390_GOTPC:
1484 case R_390_GOTPCDBL:
1485 case R_390_GOTENT:
1486 if (h != NULL)
1487 {
1488 if (h->got.refcount > 0)
1489 h->got.refcount -= 1;
1490 }
1491 else if (local_got_refcounts != NULL)
1492 {
1493 if (local_got_refcounts[r_symndx] > 0)
1494 local_got_refcounts[r_symndx] -= 1;
1495 }
1496 break;
1497
1498 case R_390_8:
1499 case R_390_12:
1500 case R_390_16:
1501 case R_390_20:
1502 case R_390_32:
1503 case R_390_PC16:
1504 case R_390_PC16DBL:
1505 case R_390_PC32DBL:
1506 case R_390_PC32:
1507 if (info->shared)
1508 break;
1509 /* Fall through. */
1510
1511 case R_390_PLT16DBL:
1512 case R_390_PLT32DBL:
1513 case R_390_PLT32:
1514 case R_390_PLTOFF16:
1515 case R_390_PLTOFF32:
1516 if (h != NULL)
1517 {
1518 if (h->plt.refcount > 0)
1519 h->plt.refcount -= 1;
1520 }
1521 break;
1522
1523 case R_390_GOTPLT12:
1524 case R_390_GOTPLT16:
1525 case R_390_GOTPLT20:
1526 case R_390_GOTPLT32:
1527 case R_390_GOTPLTENT:
1528 if (h != NULL)
1529 {
1530 if (h->plt.refcount > 0)
1531 {
1532 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1533 h->plt.refcount -= 1;
1534 }
1535 }
1536 else if (local_got_refcounts != NULL)
1537 {
1538 if (local_got_refcounts[r_symndx] > 0)
1539 local_got_refcounts[r_symndx] -= 1;
1540 }
1541 break;
1542
1543 default:
1544 break;
1545 }
1546 }
1547
1548 return TRUE;
1549 }
1550
1551 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1552 entry but we found we will not create any. Called when we find we will
1553 not have any PLT for this symbol, by for example
1554 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1555 or elf_s390_size_dynamic_sections if no dynamic sections will be
1556 created (we're only linking static objects). */
1557
1558 static void
1559 elf_s390_adjust_gotplt (h)
1560 struct elf_s390_link_hash_entry *h;
1561 {
1562 if (h->elf.root.type == bfd_link_hash_warning)
1563 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1564
1565 if (h->gotplt_refcount <= 0)
1566 return;
1567
1568 /* We simply add the number of gotplt references to the number
1569 * of got references for this symbol. */
1570 h->elf.got.refcount += h->gotplt_refcount;
1571 h->gotplt_refcount = -1;
1572 }
1573
1574 /* Adjust a symbol defined by a dynamic object and referenced by a
1575 regular object. The current definition is in some section of the
1576 dynamic object, but we're not including those sections. We have to
1577 change the definition to something the rest of the link can
1578 understand. */
1579
1580 static bfd_boolean
1581 elf_s390_adjust_dynamic_symbol (info, h)
1582 struct bfd_link_info *info;
1583 struct elf_link_hash_entry *h;
1584 {
1585 struct elf_s390_link_hash_table *htab;
1586 asection *s;
1587
1588 /* If this is a function, put it in the procedure linkage table. We
1589 will fill in the contents of the procedure linkage table later
1590 (although we could actually do it here). */
1591 if (h->type == STT_FUNC
1592 || h->needs_plt)
1593 {
1594 if (h->plt.refcount <= 0
1595 || (! info->shared
1596 && !h->def_dynamic
1597 && !h->ref_dynamic
1598 && h->root.type != bfd_link_hash_undefweak
1599 && h->root.type != bfd_link_hash_undefined))
1600 {
1601 /* This case can occur if we saw a PLT32 reloc in an input
1602 file, but the symbol was never referred to by a dynamic
1603 object, or if all references were garbage collected. In
1604 such a case, we don't actually need to build a procedure
1605 linkage table, and we can just do a PC32 reloc instead. */
1606 h->plt.offset = (bfd_vma) -1;
1607 h->needs_plt = 0;
1608 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1609 }
1610
1611 return TRUE;
1612 }
1613 else
1614 /* It's possible that we incorrectly decided a .plt reloc was
1615 needed for an R_390_PC32 reloc to a non-function sym in
1616 check_relocs. We can't decide accurately between function and
1617 non-function syms in check-relocs; Objects loaded later in
1618 the link may change h->type. So fix it now. */
1619 h->plt.offset = (bfd_vma) -1;
1620
1621 /* If this is a weak symbol, and there is a real definition, the
1622 processor independent code will have arranged for us to see the
1623 real definition first, and we can just use the same value. */
1624 if (h->u.weakdef != NULL)
1625 {
1626 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1627 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1628 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1629 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1630 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1631 h->non_got_ref = h->u.weakdef->non_got_ref;
1632 return TRUE;
1633 }
1634
1635 /* This is a reference to a symbol defined by a dynamic object which
1636 is not a function. */
1637
1638 /* If we are creating a shared library, we must presume that the
1639 only references to the symbol are via the global offset table.
1640 For such cases we need not do anything here; the relocations will
1641 be handled correctly by relocate_section. */
1642 if (info->shared)
1643 return TRUE;
1644
1645 /* If there are no references to this symbol that do not use the
1646 GOT, we don't need to generate a copy reloc. */
1647 if (!h->non_got_ref)
1648 return TRUE;
1649
1650 /* If -z nocopyreloc was given, we won't generate them either. */
1651 if (info->nocopyreloc)
1652 {
1653 h->non_got_ref = 0;
1654 return TRUE;
1655 }
1656
1657 if (ELIMINATE_COPY_RELOCS)
1658 {
1659 struct elf_s390_link_hash_entry * eh;
1660 struct elf_s390_dyn_relocs *p;
1661
1662 eh = (struct elf_s390_link_hash_entry *) h;
1663 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1664 {
1665 s = p->sec->output_section;
1666 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1667 break;
1668 }
1669
1670 /* If we didn't find any dynamic relocs in read-only sections, then
1671 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1672 if (p == NULL)
1673 {
1674 h->non_got_ref = 0;
1675 return TRUE;
1676 }
1677 }
1678
1679 if (h->size == 0)
1680 {
1681 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1682 h->root.root.string);
1683 return TRUE;
1684 }
1685
1686 /* We must allocate the symbol in our .dynbss section, which will
1687 become part of the .bss section of the executable. There will be
1688 an entry for this symbol in the .dynsym section. The dynamic
1689 object will contain position independent code, so all references
1690 from the dynamic object to this symbol will go through the global
1691 offset table. The dynamic linker will use the .dynsym entry to
1692 determine the address it must put in the global offset table, so
1693 both the dynamic object and the regular object will refer to the
1694 same memory location for the variable. */
1695
1696 htab = elf_s390_hash_table (info);
1697
1698 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1699 copy the initial value out of the dynamic object and into the
1700 runtime process image. */
1701 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1702 {
1703 htab->srelbss->size += sizeof (Elf32_External_Rela);
1704 h->needs_copy = 1;
1705 }
1706
1707 s = htab->sdynbss;
1708
1709 return _bfd_elf_adjust_dynamic_copy (h, s);
1710 }
1711
1712 /* Allocate space in .plt, .got and associated reloc sections for
1713 dynamic relocs. */
1714
1715 static bfd_boolean
1716 allocate_dynrelocs (h, inf)
1717 struct elf_link_hash_entry *h;
1718 PTR inf;
1719 {
1720 struct bfd_link_info *info;
1721 struct elf_s390_link_hash_table *htab;
1722 struct elf_s390_link_hash_entry *eh;
1723 struct elf_s390_dyn_relocs *p;
1724
1725 if (h->root.type == bfd_link_hash_indirect)
1726 return TRUE;
1727
1728 if (h->root.type == bfd_link_hash_warning)
1729 /* When warning symbols are created, they **replace** the "real"
1730 entry in the hash table, thus we never get to see the real
1731 symbol in a hash traversal. So look at it now. */
1732 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1733
1734 info = (struct bfd_link_info *) inf;
1735 htab = elf_s390_hash_table (info);
1736
1737 if (htab->elf.dynamic_sections_created
1738 && h->plt.refcount > 0
1739 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1740 || h->root.type != bfd_link_hash_undefweak))
1741 {
1742 /* Make sure this symbol is output as a dynamic symbol.
1743 Undefined weak syms won't yet be marked as dynamic. */
1744 if (h->dynindx == -1
1745 && !h->forced_local)
1746 {
1747 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1748 return FALSE;
1749 }
1750
1751 if (info->shared
1752 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1753 {
1754 asection *s = htab->splt;
1755
1756 /* If this is the first .plt entry, make room for the special
1757 first entry. */
1758 if (s->size == 0)
1759 s->size += PLT_FIRST_ENTRY_SIZE;
1760
1761 h->plt.offset = s->size;
1762
1763 /* If this symbol is not defined in a regular file, and we are
1764 not generating a shared library, then set the symbol to this
1765 location in the .plt. This is required to make function
1766 pointers compare as equal between the normal executable and
1767 the shared library. */
1768 if (! info->shared
1769 && !h->def_regular)
1770 {
1771 h->root.u.def.section = s;
1772 h->root.u.def.value = h->plt.offset;
1773 }
1774
1775 /* Make room for this entry. */
1776 s->size += PLT_ENTRY_SIZE;
1777
1778 /* We also need to make an entry in the .got.plt section, which
1779 will be placed in the .got section by the linker script. */
1780 htab->sgotplt->size += GOT_ENTRY_SIZE;
1781
1782 /* We also need to make an entry in the .rela.plt section. */
1783 htab->srelplt->size += sizeof (Elf32_External_Rela);
1784 }
1785 else
1786 {
1787 h->plt.offset = (bfd_vma) -1;
1788 h->needs_plt = 0;
1789 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1790 }
1791 }
1792 else
1793 {
1794 h->plt.offset = (bfd_vma) -1;
1795 h->needs_plt = 0;
1796 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1797 }
1798
1799 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1800 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1801 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1802 we can save the dynamic TLS relocation. */
1803 if (h->got.refcount > 0
1804 && !info->shared
1805 && h->dynindx == -1
1806 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1807 {
1808 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1809 /* For the GOTIE access without a literal pool entry the offset has
1810 to be stored somewhere. The immediate value in the instruction
1811 is not bit enough so the value is stored in the got. */
1812 {
1813 h->got.offset = htab->sgot->size;
1814 htab->sgot->size += GOT_ENTRY_SIZE;
1815 }
1816 else
1817 h->got.offset = (bfd_vma) -1;
1818 }
1819 else if (h->got.refcount > 0)
1820 {
1821 asection *s;
1822 bfd_boolean dyn;
1823 int tls_type = elf_s390_hash_entry(h)->tls_type;
1824
1825 /* Make sure this symbol is output as a dynamic symbol.
1826 Undefined weak syms won't yet be marked as dynamic. */
1827 if (h->dynindx == -1
1828 && !h->forced_local)
1829 {
1830 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1831 return FALSE;
1832 }
1833
1834 s = htab->sgot;
1835 h->got.offset = s->size;
1836 s->size += GOT_ENTRY_SIZE;
1837 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1838 if (tls_type == GOT_TLS_GD)
1839 s->size += GOT_ENTRY_SIZE;
1840 dyn = htab->elf.dynamic_sections_created;
1841 /* R_390_TLS_IE32 needs one dynamic relocation,
1842 R_390_TLS_GD32 needs one if local symbol and two if global. */
1843 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1844 || tls_type >= GOT_TLS_IE)
1845 htab->srelgot->size += sizeof (Elf32_External_Rela);
1846 else if (tls_type == GOT_TLS_GD)
1847 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1848 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1849 || h->root.type != bfd_link_hash_undefweak)
1850 && (info->shared
1851 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1852 htab->srelgot->size += sizeof (Elf32_External_Rela);
1853 }
1854 else
1855 h->got.offset = (bfd_vma) -1;
1856
1857 eh = (struct elf_s390_link_hash_entry *) h;
1858 if (eh->dyn_relocs == NULL)
1859 return TRUE;
1860
1861 /* In the shared -Bsymbolic case, discard space allocated for
1862 dynamic pc-relative relocs against symbols which turn out to be
1863 defined in regular objects. For the normal shared case, discard
1864 space for pc-relative relocs that have become local due to symbol
1865 visibility changes. */
1866
1867 if (info->shared)
1868 {
1869 if (SYMBOL_REFERENCES_LOCAL (info, h))
1870 {
1871 struct elf_s390_dyn_relocs **pp;
1872
1873 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1874 {
1875 p->count -= p->pc_count;
1876 p->pc_count = 0;
1877 if (p->count == 0)
1878 *pp = p->next;
1879 else
1880 pp = &p->next;
1881 }
1882 }
1883
1884 /* Also discard relocs on undefined weak syms with non-default
1885 visibility. */
1886 if (eh->dyn_relocs != NULL
1887 && h->root.type == bfd_link_hash_undefweak)
1888 {
1889 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1890 eh->dyn_relocs = NULL;
1891
1892 /* Make sure undefined weak symbols are output as a dynamic
1893 symbol in PIEs. */
1894 else if (h->dynindx == -1
1895 && !h->forced_local)
1896 {
1897 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1898 return FALSE;
1899 }
1900 }
1901 }
1902 else if (ELIMINATE_COPY_RELOCS)
1903 {
1904 /* For the non-shared case, discard space for relocs against
1905 symbols which turn out to need copy relocs or are not
1906 dynamic. */
1907
1908 if (!h->non_got_ref
1909 && ((h->def_dynamic
1910 && !h->def_regular)
1911 || (htab->elf.dynamic_sections_created
1912 && (h->root.type == bfd_link_hash_undefweak
1913 || h->root.type == bfd_link_hash_undefined))))
1914 {
1915 /* Make sure this symbol is output as a dynamic symbol.
1916 Undefined weak syms won't yet be marked as dynamic. */
1917 if (h->dynindx == -1
1918 && !h->forced_local)
1919 {
1920 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1921 return FALSE;
1922 }
1923
1924 /* If that succeeded, we know we'll be keeping all the
1925 relocs. */
1926 if (h->dynindx != -1)
1927 goto keep;
1928 }
1929
1930 eh->dyn_relocs = NULL;
1931
1932 keep: ;
1933 }
1934
1935 /* Finally, allocate space. */
1936 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1937 {
1938 asection *sreloc = elf_section_data (p->sec)->sreloc;
1939
1940 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1941 }
1942
1943 return TRUE;
1944 }
1945
1946 /* Find any dynamic relocs that apply to read-only sections. */
1947
1948 static bfd_boolean
1949 readonly_dynrelocs (h, inf)
1950 struct elf_link_hash_entry *h;
1951 PTR inf;
1952 {
1953 struct elf_s390_link_hash_entry *eh;
1954 struct elf_s390_dyn_relocs *p;
1955
1956 if (h->root.type == bfd_link_hash_warning)
1957 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1958
1959 eh = (struct elf_s390_link_hash_entry *) h;
1960 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1961 {
1962 asection *s = p->sec->output_section;
1963
1964 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1965 {
1966 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1967
1968 info->flags |= DF_TEXTREL;
1969
1970 /* Not an error, just cut short the traversal. */
1971 return FALSE;
1972 }
1973 }
1974 return TRUE;
1975 }
1976
1977 /* Set the sizes of the dynamic sections. */
1978
1979 static bfd_boolean
1980 elf_s390_size_dynamic_sections (output_bfd, info)
1981 bfd *output_bfd ATTRIBUTE_UNUSED;
1982 struct bfd_link_info *info;
1983 {
1984 struct elf_s390_link_hash_table *htab;
1985 bfd *dynobj;
1986 asection *s;
1987 bfd_boolean relocs;
1988 bfd *ibfd;
1989
1990 htab = elf_s390_hash_table (info);
1991 dynobj = htab->elf.dynobj;
1992 if (dynobj == NULL)
1993 abort ();
1994
1995 if (htab->elf.dynamic_sections_created)
1996 {
1997 /* Set the contents of the .interp section to the interpreter. */
1998 if (info->executable)
1999 {
2000 s = bfd_get_section_by_name (dynobj, ".interp");
2001 if (s == NULL)
2002 abort ();
2003 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2004 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2005 }
2006 }
2007
2008 /* Set up .got offsets for local syms, and space for local dynamic
2009 relocs. */
2010 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2011 {
2012 bfd_signed_vma *local_got;
2013 bfd_signed_vma *end_local_got;
2014 char *local_tls_type;
2015 bfd_size_type locsymcount;
2016 Elf_Internal_Shdr *symtab_hdr;
2017 asection *srela;
2018
2019 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2020 continue;
2021
2022 for (s = ibfd->sections; s != NULL; s = s->next)
2023 {
2024 struct elf_s390_dyn_relocs *p;
2025
2026 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2027 {
2028 if (!bfd_is_abs_section (p->sec)
2029 && bfd_is_abs_section (p->sec->output_section))
2030 {
2031 /* Input section has been discarded, either because
2032 it is a copy of a linkonce section or due to
2033 linker script /DISCARD/, so we'll be discarding
2034 the relocs too. */
2035 }
2036 else if (p->count != 0)
2037 {
2038 srela = elf_section_data (p->sec)->sreloc;
2039 srela->size += p->count * sizeof (Elf32_External_Rela);
2040 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2041 info->flags |= DF_TEXTREL;
2042 }
2043 }
2044 }
2045
2046 local_got = elf_local_got_refcounts (ibfd);
2047 if (!local_got)
2048 continue;
2049
2050 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2051 locsymcount = symtab_hdr->sh_info;
2052 end_local_got = local_got + locsymcount;
2053 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2054 s = htab->sgot;
2055 srela = htab->srelgot;
2056 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2057 {
2058 if (*local_got > 0)
2059 {
2060 *local_got = s->size;
2061 s->size += GOT_ENTRY_SIZE;
2062 if (*local_tls_type == GOT_TLS_GD)
2063 s->size += GOT_ENTRY_SIZE;
2064 if (info->shared)
2065 srela->size += sizeof (Elf32_External_Rela);
2066 }
2067 else
2068 *local_got = (bfd_vma) -1;
2069 }
2070 }
2071
2072 if (htab->tls_ldm_got.refcount > 0)
2073 {
2074 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2075 relocs. */
2076 htab->tls_ldm_got.offset = htab->sgot->size;
2077 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2078 htab->srelgot->size += sizeof (Elf32_External_Rela);
2079 }
2080 else
2081 htab->tls_ldm_got.offset = -1;
2082
2083 /* Allocate global sym .plt and .got entries, and space for global
2084 sym dynamic relocs. */
2085 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2086
2087 /* We now have determined the sizes of the various dynamic sections.
2088 Allocate memory for them. */
2089 relocs = FALSE;
2090 for (s = dynobj->sections; s != NULL; s = s->next)
2091 {
2092 if ((s->flags & SEC_LINKER_CREATED) == 0)
2093 continue;
2094
2095 if (s == htab->splt
2096 || s == htab->sgot
2097 || s == htab->sgotplt
2098 || s == htab->sdynbss)
2099 {
2100 /* Strip this section if we don't need it; see the
2101 comment below. */
2102 }
2103 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2104 {
2105 if (s->size != 0)
2106 relocs = TRUE;
2107
2108 /* We use the reloc_count field as a counter if we need
2109 to copy relocs into the output file. */
2110 s->reloc_count = 0;
2111 }
2112 else
2113 {
2114 /* It's not one of our sections, so don't allocate space. */
2115 continue;
2116 }
2117
2118 if (s->size == 0)
2119 {
2120 /* If we don't need this section, strip it from the
2121 output file. This is to handle .rela.bss and
2122 .rela.plt. We must create it in
2123 create_dynamic_sections, because it must be created
2124 before the linker maps input sections to output
2125 sections. The linker does that before
2126 adjust_dynamic_symbol is called, and it is that
2127 function which decides whether anything needs to go
2128 into these sections. */
2129
2130 s->flags |= SEC_EXCLUDE;
2131 continue;
2132 }
2133
2134 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2135 continue;
2136
2137 /* Allocate memory for the section contents. We use bfd_zalloc
2138 here in case unused entries are not reclaimed before the
2139 section's contents are written out. This should not happen,
2140 but this way if it does, we get a R_390_NONE reloc instead
2141 of garbage. */
2142 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2143 if (s->contents == NULL)
2144 return FALSE;
2145 }
2146
2147 if (htab->elf.dynamic_sections_created)
2148 {
2149 /* Add some entries to the .dynamic section. We fill in the
2150 values later, in elf_s390_finish_dynamic_sections, but we
2151 must add the entries now so that we get the correct size for
2152 the .dynamic section. The DT_DEBUG entry is filled in by the
2153 dynamic linker and used by the debugger. */
2154 #define add_dynamic_entry(TAG, VAL) \
2155 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2156
2157 if (info->executable)
2158 {
2159 if (!add_dynamic_entry (DT_DEBUG, 0))
2160 return FALSE;
2161 }
2162
2163 if (htab->splt->size != 0)
2164 {
2165 if (!add_dynamic_entry (DT_PLTGOT, 0)
2166 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2167 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2168 || !add_dynamic_entry (DT_JMPREL, 0))
2169 return FALSE;
2170 }
2171
2172 if (relocs)
2173 {
2174 if (!add_dynamic_entry (DT_RELA, 0)
2175 || !add_dynamic_entry (DT_RELASZ, 0)
2176 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2177 return FALSE;
2178
2179 /* If any dynamic relocs apply to a read-only section,
2180 then we need a DT_TEXTREL entry. */
2181 if ((info->flags & DF_TEXTREL) == 0)
2182 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2183 (PTR) info);
2184
2185 if ((info->flags & DF_TEXTREL) != 0)
2186 {
2187 if (!add_dynamic_entry (DT_TEXTREL, 0))
2188 return FALSE;
2189 }
2190 }
2191 }
2192 #undef add_dynamic_entry
2193
2194 return TRUE;
2195 }
2196
2197 /* Return the base VMA address which should be subtracted from real addresses
2198 when resolving @dtpoff relocation.
2199 This is PT_TLS segment p_vaddr. */
2200
2201 static bfd_vma
2202 dtpoff_base (info)
2203 struct bfd_link_info *info;
2204 {
2205 /* If tls_sec is NULL, we should have signalled an error already. */
2206 if (elf_hash_table (info)->tls_sec == NULL)
2207 return 0;
2208 return elf_hash_table (info)->tls_sec->vma;
2209 }
2210
2211 /* Return the relocation value for @tpoff relocation
2212 if STT_TLS virtual address is ADDRESS. */
2213
2214 static bfd_vma
2215 tpoff (info, address)
2216 struct bfd_link_info *info;
2217 bfd_vma address;
2218 {
2219 struct elf_link_hash_table *htab = elf_hash_table (info);
2220
2221 /* If tls_sec is NULL, we should have signalled an error already. */
2222 if (htab->tls_sec == NULL)
2223 return 0;
2224 return htab->tls_size + htab->tls_sec->vma - address;
2225 }
2226
2227 /* Complain if TLS instruction relocation is against an invalid
2228 instruction. */
2229
2230 static void
2231 invalid_tls_insn (input_bfd, input_section, rel)
2232 bfd *input_bfd;
2233 asection *input_section;
2234 Elf_Internal_Rela *rel;
2235 {
2236 reloc_howto_type *howto;
2237
2238 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2239 (*_bfd_error_handler)
2240 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2241 input_bfd,
2242 input_section,
2243 (long) rel->r_offset,
2244 howto->name);
2245 bfd_set_error (bfd_error_bad_value);
2246 }
2247
2248 /* Relocate a 390 ELF section. */
2249
2250 static bfd_boolean
2251 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2252 contents, relocs, local_syms, local_sections)
2253 bfd *output_bfd;
2254 struct bfd_link_info *info;
2255 bfd *input_bfd;
2256 asection *input_section;
2257 bfd_byte *contents;
2258 Elf_Internal_Rela *relocs;
2259 Elf_Internal_Sym *local_syms;
2260 asection **local_sections;
2261 {
2262 struct elf_s390_link_hash_table *htab;
2263 Elf_Internal_Shdr *symtab_hdr;
2264 struct elf_link_hash_entry **sym_hashes;
2265 bfd_vma *local_got_offsets;
2266 Elf_Internal_Rela *rel;
2267 Elf_Internal_Rela *relend;
2268
2269 htab = elf_s390_hash_table (info);
2270 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2271 sym_hashes = elf_sym_hashes (input_bfd);
2272 local_got_offsets = elf_local_got_offsets (input_bfd);
2273
2274 rel = relocs;
2275 relend = relocs + input_section->reloc_count;
2276 for (; rel < relend; rel++)
2277 {
2278 unsigned int r_type;
2279 reloc_howto_type *howto;
2280 unsigned long r_symndx;
2281 struct elf_link_hash_entry *h;
2282 Elf_Internal_Sym *sym;
2283 asection *sec;
2284 bfd_vma off;
2285 bfd_vma relocation;
2286 bfd_boolean unresolved_reloc;
2287 bfd_reloc_status_type r;
2288 int tls_type;
2289
2290 r_type = ELF32_R_TYPE (rel->r_info);
2291 if (r_type == (int) R_390_GNU_VTINHERIT
2292 || r_type == (int) R_390_GNU_VTENTRY)
2293 continue;
2294 if (r_type >= (int) R_390_max)
2295 {
2296 bfd_set_error (bfd_error_bad_value);
2297 return FALSE;
2298 }
2299
2300 howto = elf_howto_table + r_type;
2301 r_symndx = ELF32_R_SYM (rel->r_info);
2302
2303 h = NULL;
2304 sym = NULL;
2305 sec = NULL;
2306 unresolved_reloc = FALSE;
2307 if (r_symndx < symtab_hdr->sh_info)
2308 {
2309 sym = local_syms + r_symndx;
2310 sec = local_sections[r_symndx];
2311 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2312 }
2313 else
2314 {
2315 bfd_boolean warned ATTRIBUTE_UNUSED;
2316
2317 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2318 r_symndx, symtab_hdr, sym_hashes,
2319 h, sec, relocation,
2320 unresolved_reloc, warned);
2321 }
2322
2323 if (sec != NULL && elf_discarded_section (sec))
2324 {
2325 /* For relocs against symbols from removed linkonce sections,
2326 or sections discarded by a linker script, we just want the
2327 section contents zeroed. Avoid any special processing. */
2328 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2329 rel->r_info = 0;
2330 rel->r_addend = 0;
2331 continue;
2332 }
2333
2334 if (info->relocatable)
2335 continue;
2336
2337 switch (r_type)
2338 {
2339 case R_390_GOTPLT12:
2340 case R_390_GOTPLT16:
2341 case R_390_GOTPLT20:
2342 case R_390_GOTPLT32:
2343 case R_390_GOTPLTENT:
2344 /* There are three cases for a GOTPLT relocation. 1) The
2345 relocation is against the jump slot entry of a plt that
2346 will get emitted to the output file. 2) The relocation
2347 is against the jump slot of a plt entry that has been
2348 removed. elf_s390_adjust_gotplt has created a GOT entry
2349 as replacement. 3) The relocation is against a local symbol.
2350 Cases 2) and 3) are the same as the GOT relocation code
2351 so we just have to test for case 1 and fall through for
2352 the other two. */
2353 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2354 {
2355 bfd_vma plt_index;
2356
2357 /* Calc. index no.
2358 Current offset - size first entry / entry size. */
2359 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2360 PLT_ENTRY_SIZE;
2361
2362 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2363 addr & GOT addr. */
2364 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2365 unresolved_reloc = FALSE;
2366
2367 if (r_type == R_390_GOTPLTENT)
2368 relocation += htab->sgot->output_section->vma;
2369 break;
2370 }
2371 /* Fall through. */
2372
2373 case R_390_GOT12:
2374 case R_390_GOT16:
2375 case R_390_GOT20:
2376 case R_390_GOT32:
2377 case R_390_GOTENT:
2378 /* Relocation is to the entry for this symbol in the global
2379 offset table. */
2380 if (htab->sgot == NULL)
2381 abort ();
2382
2383 if (h != NULL)
2384 {
2385 bfd_boolean dyn;
2386
2387 off = h->got.offset;
2388 dyn = htab->elf.dynamic_sections_created;
2389 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2390 || (info->shared
2391 && (info->symbolic
2392 || h->dynindx == -1
2393 || h->forced_local)
2394 && h->def_regular)
2395 || (ELF_ST_VISIBILITY (h->other)
2396 && h->root.type == bfd_link_hash_undefweak))
2397 {
2398 /* This is actually a static link, or it is a
2399 -Bsymbolic link and the symbol is defined
2400 locally, or the symbol was forced to be local
2401 because of a version file. We must initialize
2402 this entry in the global offset table. Since the
2403 offset must always be a multiple of 2, we use the
2404 least significant bit to record whether we have
2405 initialized it already.
2406
2407 When doing a dynamic link, we create a .rel.got
2408 relocation entry to initialize the value. This
2409 is done in the finish_dynamic_symbol routine. */
2410 if ((off & 1) != 0)
2411 off &= ~1;
2412 else
2413 {
2414 bfd_put_32 (output_bfd, relocation,
2415 htab->sgot->contents + off);
2416 h->got.offset |= 1;
2417 }
2418 }
2419 else
2420 unresolved_reloc = FALSE;
2421 }
2422 else
2423 {
2424 if (local_got_offsets == NULL)
2425 abort ();
2426
2427 off = local_got_offsets[r_symndx];
2428
2429 /* The offset must always be a multiple of 4. We use
2430 the least significant bit to record whether we have
2431 already generated the necessary reloc. */
2432 if ((off & 1) != 0)
2433 off &= ~1;
2434 else
2435 {
2436 bfd_put_32 (output_bfd, relocation,
2437 htab->sgot->contents + off);
2438
2439 if (info->shared)
2440 {
2441 asection *srelgot;
2442 Elf_Internal_Rela outrel;
2443 bfd_byte *loc;
2444
2445 srelgot = htab->srelgot;
2446 if (srelgot == NULL)
2447 abort ();
2448
2449 outrel.r_offset = (htab->sgot->output_section->vma
2450 + htab->sgot->output_offset
2451 + off);
2452 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2453 outrel.r_addend = relocation;
2454 loc = srelgot->contents;
2455 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2456 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2457 }
2458
2459 local_got_offsets[r_symndx] |= 1;
2460 }
2461 }
2462
2463 if (off >= (bfd_vma) -2)
2464 abort ();
2465
2466 relocation = htab->sgot->output_offset + off;
2467
2468 /* For @GOTENT the relocation is against the offset between
2469 the instruction and the symbols entry in the GOT and not
2470 between the start of the GOT and the symbols entry. We
2471 add the vma of the GOT to get the correct value. */
2472 if ( r_type == R_390_GOTENT
2473 || r_type == R_390_GOTPLTENT)
2474 relocation += htab->sgot->output_section->vma;
2475
2476 break;
2477
2478 case R_390_GOTOFF16:
2479 case R_390_GOTOFF32:
2480 /* Relocation is relative to the start of the global offset
2481 table. */
2482
2483 /* Note that sgot->output_offset is not involved in this
2484 calculation. We always want the start of .got. If we
2485 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2486 permitted by the ABI, we might have to change this
2487 calculation. */
2488 relocation -= htab->sgot->output_section->vma;
2489 break;
2490
2491 case R_390_GOTPC:
2492 case R_390_GOTPCDBL:
2493 /* Use global offset table as symbol value. */
2494 relocation = htab->sgot->output_section->vma;
2495 unresolved_reloc = FALSE;
2496 break;
2497
2498 case R_390_PLT16DBL:
2499 case R_390_PLT32DBL:
2500 case R_390_PLT32:
2501 /* Relocation is to the entry for this symbol in the
2502 procedure linkage table. */
2503
2504 /* Resolve a PLT32 reloc against a local symbol directly,
2505 without using the procedure linkage table. */
2506 if (h == NULL)
2507 break;
2508
2509 if (h->plt.offset == (bfd_vma) -1
2510 || htab->splt == NULL)
2511 {
2512 /* We didn't make a PLT entry for this symbol. This
2513 happens when statically linking PIC code, or when
2514 using -Bsymbolic. */
2515 break;
2516 }
2517
2518 relocation = (htab->splt->output_section->vma
2519 + htab->splt->output_offset
2520 + h->plt.offset);
2521 unresolved_reloc = FALSE;
2522 break;
2523
2524 case R_390_PLTOFF16:
2525 case R_390_PLTOFF32:
2526 /* Relocation is to the entry for this symbol in the
2527 procedure linkage table relative to the start of the GOT. */
2528
2529 /* For local symbols or if we didn't make a PLT entry for
2530 this symbol resolve the symbol directly. */
2531 if ( h == NULL
2532 || h->plt.offset == (bfd_vma) -1
2533 || htab->splt == NULL)
2534 {
2535 relocation -= htab->sgot->output_section->vma;
2536 break;
2537 }
2538
2539 relocation = (htab->splt->output_section->vma
2540 + htab->splt->output_offset
2541 + h->plt.offset
2542 - htab->sgot->output_section->vma);
2543 unresolved_reloc = FALSE;
2544 break;
2545
2546 case R_390_8:
2547 case R_390_16:
2548 case R_390_32:
2549 case R_390_PC16:
2550 case R_390_PC16DBL:
2551 case R_390_PC32DBL:
2552 case R_390_PC32:
2553 if ((input_section->flags & SEC_ALLOC) == 0)
2554 break;
2555
2556 if ((info->shared
2557 && (h == NULL
2558 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2559 || h->root.type != bfd_link_hash_undefweak)
2560 && ((r_type != R_390_PC16
2561 && r_type != R_390_PC16DBL
2562 && r_type != R_390_PC32DBL
2563 && r_type != R_390_PC32)
2564 || (h != NULL
2565 && !SYMBOL_REFERENCES_LOCAL (info, h))))
2566 || (ELIMINATE_COPY_RELOCS
2567 && !info->shared
2568 && h != NULL
2569 && h->dynindx != -1
2570 && !h->non_got_ref
2571 && ((h->def_dynamic
2572 && !h->def_regular)
2573 || h->root.type == bfd_link_hash_undefweak
2574 || h->root.type == bfd_link_hash_undefined)))
2575 {
2576 Elf_Internal_Rela outrel;
2577 bfd_boolean skip, relocate;
2578 asection *sreloc;
2579 bfd_byte *loc;
2580
2581 /* When generating a shared object, these relocations
2582 are copied into the output file to be resolved at run
2583 time. */
2584
2585 skip = FALSE;
2586 relocate = FALSE;
2587
2588 outrel.r_offset =
2589 _bfd_elf_section_offset (output_bfd, info, input_section,
2590 rel->r_offset);
2591 if (outrel.r_offset == (bfd_vma) -1)
2592 skip = TRUE;
2593 else if (outrel.r_offset == (bfd_vma) -2)
2594 skip = TRUE, relocate = TRUE;
2595 outrel.r_offset += (input_section->output_section->vma
2596 + input_section->output_offset);
2597
2598 if (skip)
2599 memset (&outrel, 0, sizeof outrel);
2600 else if (h != NULL
2601 && h->dynindx != -1
2602 && (r_type == R_390_PC16
2603 || r_type == R_390_PC16DBL
2604 || r_type == R_390_PC32DBL
2605 || r_type == R_390_PC32
2606 || !info->shared
2607 || !info->symbolic
2608 || !h->def_regular))
2609 {
2610 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2611 outrel.r_addend = rel->r_addend;
2612 }
2613 else
2614 {
2615 /* This symbol is local, or marked to become local. */
2616 outrel.r_addend = relocation + rel->r_addend;
2617 if (r_type == R_390_32)
2618 {
2619 relocate = TRUE;
2620 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2621 }
2622 else
2623 {
2624 long sindx;
2625
2626 if (bfd_is_abs_section (sec))
2627 sindx = 0;
2628 else if (sec == NULL || sec->owner == NULL)
2629 {
2630 bfd_set_error(bfd_error_bad_value);
2631 return FALSE;
2632 }
2633 else
2634 {
2635 asection *osec;
2636
2637 osec = sec->output_section;
2638 sindx = elf_section_data (osec)->dynindx;
2639 if (sindx == 0)
2640 {
2641 osec = htab->elf.text_index_section;
2642 sindx = elf_section_data (osec)->dynindx;
2643 }
2644 BFD_ASSERT (sindx != 0);
2645
2646 /* We are turning this relocation into one
2647 against a section symbol, so subtract out
2648 the output section's address but not the
2649 offset of the input section in the output
2650 section. */
2651 outrel.r_addend -= osec->vma;
2652 }
2653 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2654 }
2655 }
2656
2657 sreloc = elf_section_data (input_section)->sreloc;
2658 if (sreloc == NULL)
2659 abort ();
2660
2661 loc = sreloc->contents;
2662 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2663 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2664
2665 /* If this reloc is against an external symbol, we do
2666 not want to fiddle with the addend. Otherwise, we
2667 need to include the symbol value so that it becomes
2668 an addend for the dynamic reloc. */
2669 if (! relocate)
2670 continue;
2671 }
2672 break;
2673
2674 /* Relocations for tls literal pool entries. */
2675 case R_390_TLS_IE32:
2676 if (info->shared)
2677 {
2678 Elf_Internal_Rela outrel;
2679 asection *sreloc;
2680 bfd_byte *loc;
2681
2682 outrel.r_offset = rel->r_offset
2683 + input_section->output_section->vma
2684 + input_section->output_offset;
2685 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2686 sreloc = elf_section_data (input_section)->sreloc;
2687 if (sreloc == NULL)
2688 abort ();
2689 loc = sreloc->contents;
2690 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2691 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2692 }
2693 /* Fall through. */
2694
2695 case R_390_TLS_GD32:
2696 case R_390_TLS_GOTIE32:
2697 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2698 tls_type = GOT_UNKNOWN;
2699 if (h == NULL && local_got_offsets)
2700 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2701 else if (h != NULL)
2702 {
2703 tls_type = elf_s390_hash_entry(h)->tls_type;
2704 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2705 r_type = R_390_TLS_LE32;
2706 }
2707 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2708 r_type = R_390_TLS_IE32;
2709
2710 if (r_type == R_390_TLS_LE32)
2711 {
2712 /* This relocation gets optimized away by the local exec
2713 access optimization. */
2714 BFD_ASSERT (! unresolved_reloc);
2715 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2716 contents + rel->r_offset);
2717 continue;
2718 }
2719
2720 if (htab->sgot == NULL)
2721 abort ();
2722
2723 if (h != NULL)
2724 off = h->got.offset;
2725 else
2726 {
2727 if (local_got_offsets == NULL)
2728 abort ();
2729
2730 off = local_got_offsets[r_symndx];
2731 }
2732
2733 emit_tls_relocs:
2734
2735 if ((off & 1) != 0)
2736 off &= ~1;
2737 else
2738 {
2739 Elf_Internal_Rela outrel;
2740 bfd_byte *loc;
2741 int dr_type, indx;
2742
2743 if (htab->srelgot == NULL)
2744 abort ();
2745
2746 outrel.r_offset = (htab->sgot->output_section->vma
2747 + htab->sgot->output_offset + off);
2748
2749 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2750 if (r_type == R_390_TLS_GD32)
2751 dr_type = R_390_TLS_DTPMOD;
2752 else
2753 dr_type = R_390_TLS_TPOFF;
2754 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2755 outrel.r_addend = relocation - dtpoff_base (info);
2756 else
2757 outrel.r_addend = 0;
2758 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2759 loc = htab->srelgot->contents;
2760 loc += htab->srelgot->reloc_count++
2761 * sizeof (Elf32_External_Rela);
2762 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2763
2764 if (r_type == R_390_TLS_GD32)
2765 {
2766 if (indx == 0)
2767 {
2768 BFD_ASSERT (! unresolved_reloc);
2769 bfd_put_32 (output_bfd,
2770 relocation - dtpoff_base (info),
2771 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2772 }
2773 else
2774 {
2775 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2776 outrel.r_offset += GOT_ENTRY_SIZE;
2777 outrel.r_addend = 0;
2778 htab->srelgot->reloc_count++;
2779 loc += sizeof (Elf32_External_Rela);
2780 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2781 }
2782 }
2783
2784 if (h != NULL)
2785 h->got.offset |= 1;
2786 else
2787 local_got_offsets[r_symndx] |= 1;
2788 }
2789
2790 if (off >= (bfd_vma) -2)
2791 abort ();
2792 if (r_type == ELF32_R_TYPE (rel->r_info))
2793 {
2794 relocation = htab->sgot->output_offset + off;
2795 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2796 relocation += htab->sgot->output_section->vma;
2797 unresolved_reloc = FALSE;
2798 }
2799 else
2800 {
2801 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2802 contents + rel->r_offset);
2803 continue;
2804 }
2805 break;
2806
2807 case R_390_TLS_GOTIE12:
2808 case R_390_TLS_GOTIE20:
2809 case R_390_TLS_IEENT:
2810 if (h == NULL)
2811 {
2812 if (local_got_offsets == NULL)
2813 abort();
2814 off = local_got_offsets[r_symndx];
2815 if (info->shared)
2816 goto emit_tls_relocs;
2817 }
2818 else
2819 {
2820 off = h->got.offset;
2821 tls_type = elf_s390_hash_entry(h)->tls_type;
2822 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2823 goto emit_tls_relocs;
2824 }
2825
2826 if (htab->sgot == NULL)
2827 abort ();
2828
2829 BFD_ASSERT (! unresolved_reloc);
2830 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2831 htab->sgot->contents + off);
2832 relocation = htab->sgot->output_offset + off;
2833 if (r_type == R_390_TLS_IEENT)
2834 relocation += htab->sgot->output_section->vma;
2835 unresolved_reloc = FALSE;
2836 break;
2837
2838 case R_390_TLS_LDM32:
2839 if (! info->shared)
2840 /* The literal pool entry this relocation refers to gets ignored
2841 by the optimized code of the local exec model. Do nothing
2842 and the value will turn out zero. */
2843 continue;
2844
2845 if (htab->sgot == NULL)
2846 abort ();
2847
2848 off = htab->tls_ldm_got.offset;
2849 if (off & 1)
2850 off &= ~1;
2851 else
2852 {
2853 Elf_Internal_Rela outrel;
2854 bfd_byte *loc;
2855
2856 if (htab->srelgot == NULL)
2857 abort ();
2858
2859 outrel.r_offset = (htab->sgot->output_section->vma
2860 + htab->sgot->output_offset + off);
2861
2862 bfd_put_32 (output_bfd, 0,
2863 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2864 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2865 outrel.r_addend = 0;
2866 loc = htab->srelgot->contents;
2867 loc += htab->srelgot->reloc_count++
2868 * sizeof (Elf32_External_Rela);
2869 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2870 htab->tls_ldm_got.offset |= 1;
2871 }
2872 relocation = htab->sgot->output_offset + off;
2873 unresolved_reloc = FALSE;
2874 break;
2875
2876 case R_390_TLS_LE32:
2877 if (info->shared)
2878 {
2879 /* Linking a shared library with non-fpic code requires
2880 a R_390_TLS_TPOFF relocation. */
2881 Elf_Internal_Rela outrel;
2882 asection *sreloc;
2883 bfd_byte *loc;
2884 int indx;
2885
2886 outrel.r_offset = rel->r_offset
2887 + input_section->output_section->vma
2888 + input_section->output_offset;
2889 if (h != NULL && h->dynindx != -1)
2890 indx = h->dynindx;
2891 else
2892 indx = 0;
2893 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2894 if (indx == 0)
2895 outrel.r_addend = relocation - dtpoff_base (info);
2896 else
2897 outrel.r_addend = 0;
2898 sreloc = elf_section_data (input_section)->sreloc;
2899 if (sreloc == NULL)
2900 abort ();
2901 loc = sreloc->contents;
2902 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2903 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2904 }
2905 else
2906 {
2907 BFD_ASSERT (! unresolved_reloc);
2908 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2909 contents + rel->r_offset);
2910 }
2911 continue;
2912
2913 case R_390_TLS_LDO32:
2914 if (info->shared)
2915 relocation -= dtpoff_base (info);
2916 else
2917 /* When converting LDO to LE, we must negate. */
2918 relocation = -tpoff (info, relocation);
2919 break;
2920
2921 /* Relocations for tls instructions. */
2922 case R_390_TLS_LOAD:
2923 case R_390_TLS_GDCALL:
2924 case R_390_TLS_LDCALL:
2925 tls_type = GOT_UNKNOWN;
2926 if (h == NULL && local_got_offsets)
2927 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2928 else if (h != NULL)
2929 tls_type = elf_s390_hash_entry(h)->tls_type;
2930
2931 if (tls_type == GOT_TLS_GD)
2932 continue;
2933
2934 if (r_type == R_390_TLS_LOAD)
2935 {
2936 if (!info->shared && (h == NULL || h->dynindx == -1))
2937 {
2938 /* IE->LE transition. Four valid cases:
2939 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2940 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2941 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2942 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2943 unsigned int insn, ry;
2944
2945 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2946 ry = 0;
2947 if ((insn & 0xff00f000) == 0x58000000)
2948 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2949 ry = (insn & 0x000f0000);
2950 else if ((insn & 0xff0f0000) == 0x58000000)
2951 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2952 ry = (insn & 0x0000f000) << 4;
2953 else if ((insn & 0xff00f000) == 0x5800c000)
2954 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2955 ry = (insn & 0x000f0000);
2956 else if ((insn & 0xff0f0000) == 0x580c0000)
2957 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2958 ry = (insn & 0x0000f000) << 4;
2959 else
2960 invalid_tls_insn (input_bfd, input_section, rel);
2961 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2962 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2963 }
2964 }
2965 else if (r_type == R_390_TLS_GDCALL)
2966 {
2967 unsigned int insn;
2968
2969 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2970 if ((insn & 0xff000fff) != 0x4d000000 &&
2971 (insn & 0xffff0000) != 0xc0e50000)
2972 invalid_tls_insn (input_bfd, input_section, rel);
2973 if (!info->shared && (h == NULL || h->dynindx == -1))
2974 {
2975 if ((insn & 0xff000000) == 0x4d000000)
2976 {
2977 /* GD->LE transition.
2978 bas %r14,0(%rx,%r13) -> bc 0,0 */
2979 insn = 0x47000000;
2980 }
2981 else
2982 {
2983 /* GD->LE transition.
2984 brasl %r14,_tls_get_addr@plt -> brcl 0,. */
2985 insn = 0xc0040000;
2986 bfd_put_16 (output_bfd, 0x0000,
2987 contents + rel->r_offset + 4);
2988 }
2989 }
2990 else
2991 {
2992 if ((insn & 0xff000000) == 0x4d000000)
2993 {
2994 /* GD->IE transition.
2995 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2996 insn = 0x5822c000;
2997 }
2998 else
2999 {
3000 /* GD->IE transition.
3001 brasl %r14,__tls_get_addr@plt ->
3002 l %r2,0(%r2,%r12) ; bcr 0,0 */
3003 insn = 0x5822c000;
3004 bfd_put_16 (output_bfd, 0x0700,
3005 contents + rel->r_offset + 4);
3006 }
3007 }
3008 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3009 }
3010 else if (r_type == R_390_TLS_LDCALL)
3011 {
3012 if (!info->shared)
3013 {
3014 unsigned int insn;
3015
3016 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3017 if ((insn & 0xff000fff) != 0x4d000000 &&
3018 (insn & 0xffff0000) != 0xc0e50000)
3019 invalid_tls_insn (input_bfd, input_section, rel);
3020 if ((insn & 0xff000000) == 0x4d000000)
3021 {
3022 /* LD->LE transition.
3023 bas %r14,0(%rx,%r13) -> bc 0,0 */
3024 insn = 0x47000000;
3025 }
3026 else
3027 {
3028 /* LD->LE transition.
3029 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3030 insn = 0xc0040000;
3031 bfd_put_16 (output_bfd, 0x0000,
3032 contents + rel->r_offset + 4);
3033 }
3034 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3035 }
3036 }
3037 continue;
3038
3039 default:
3040 break;
3041 }
3042
3043 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3044 because such sections are not SEC_ALLOC and thus ld.so will
3045 not process them. */
3046 if (unresolved_reloc
3047 && !((input_section->flags & SEC_DEBUGGING) != 0
3048 && h->def_dynamic))
3049 (*_bfd_error_handler)
3050 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3051 input_bfd,
3052 input_section,
3053 (long) rel->r_offset,
3054 howto->name,
3055 h->root.root.string);
3056
3057 if (r_type == R_390_20
3058 || r_type == R_390_GOT20
3059 || r_type == R_390_GOTPLT20
3060 || r_type == R_390_TLS_GOTIE20)
3061 {
3062 relocation += rel->r_addend;
3063 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3064 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3065 contents, rel->r_offset,
3066 relocation, 0);
3067 }
3068 else
3069 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3070 contents, rel->r_offset,
3071 relocation, rel->r_addend);
3072
3073 if (r != bfd_reloc_ok)
3074 {
3075 const char *name;
3076
3077 if (h != NULL)
3078 name = h->root.root.string;
3079 else
3080 {
3081 name = bfd_elf_string_from_elf_section (input_bfd,
3082 symtab_hdr->sh_link,
3083 sym->st_name);
3084 if (name == NULL)
3085 return FALSE;
3086 if (*name == '\0')
3087 name = bfd_section_name (input_bfd, sec);
3088 }
3089
3090 if (r == bfd_reloc_overflow)
3091 {
3092
3093 if (! ((*info->callbacks->reloc_overflow)
3094 (info, (h ? &h->root : NULL), name, howto->name,
3095 (bfd_vma) 0, input_bfd, input_section,
3096 rel->r_offset)))
3097 return FALSE;
3098 }
3099 else
3100 {
3101 (*_bfd_error_handler)
3102 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3103 input_bfd, input_section,
3104 (long) rel->r_offset, name, (int) r);
3105 return FALSE;
3106 }
3107 }
3108 }
3109
3110 return TRUE;
3111 }
3112
3113 /* Finish up dynamic symbol handling. We set the contents of various
3114 dynamic sections here. */
3115
3116 static bfd_boolean
3117 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3118 bfd *output_bfd;
3119 struct bfd_link_info *info;
3120 struct elf_link_hash_entry *h;
3121 Elf_Internal_Sym *sym;
3122 {
3123 struct elf_s390_link_hash_table *htab;
3124
3125 htab = elf_s390_hash_table (info);
3126
3127 if (h->plt.offset != (bfd_vma) -1)
3128 {
3129 bfd_vma plt_index;
3130 bfd_vma got_offset;
3131 Elf_Internal_Rela rela;
3132 bfd_byte *loc;
3133 bfd_vma relative_offset;
3134
3135 /* This symbol has an entry in the procedure linkage table. Set
3136 it up. */
3137 if (h->dynindx == -1
3138 || htab->splt == NULL
3139 || htab->sgotplt == NULL
3140 || htab->srelplt == NULL)
3141 abort ();
3142
3143 /* Calc. index no.
3144 Current offset - size first entry / entry size. */
3145 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3146
3147 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3148 addr & GOT addr. */
3149 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3150
3151 /* S390 uses halfwords for relative branch calc! */
3152 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3153 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3154 /* If offset is > 32768, branch to a previous branch
3155 390 can only handle +-64 K jumps. */
3156 if ( -32768 > (int) relative_offset )
3157 relative_offset
3158 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3159
3160 /* Fill in the entry in the procedure linkage table. */
3161 if (!info->shared)
3162 {
3163 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3164 htab->splt->contents + h->plt.offset);
3165 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3166 htab->splt->contents + h->plt.offset + 4);
3167 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3168 htab->splt->contents + h->plt.offset + 8);
3169 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3170 htab->splt->contents + h->plt.offset + 12);
3171 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3172 htab->splt->contents + h->plt.offset + 16);
3173 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3174 htab->splt->contents + h->plt.offset + 20);
3175 bfd_put_32 (output_bfd,
3176 (htab->sgotplt->output_section->vma
3177 + htab->sgotplt->output_offset
3178 + got_offset),
3179 htab->splt->contents + h->plt.offset + 24);
3180 }
3181 else if (got_offset < 4096)
3182 {
3183 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3184 htab->splt->contents + h->plt.offset);
3185 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3186 htab->splt->contents + h->plt.offset + 4);
3187 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3188 htab->splt->contents + h->plt.offset + 8);
3189 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3190 htab->splt->contents + h->plt.offset + 12);
3191 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3192 htab->splt->contents + h->plt.offset + 16);
3193 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3194 htab->splt->contents + h->plt.offset + 20);
3195 bfd_put_32 (output_bfd, (bfd_vma) 0,
3196 htab->splt->contents + h->plt.offset + 24);
3197 }
3198 else if (got_offset < 32768)
3199 {
3200 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3201 htab->splt->contents + h->plt.offset);
3202 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3203 htab->splt->contents + h->plt.offset + 4);
3204 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3205 htab->splt->contents + h->plt.offset + 8);
3206 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3207 htab->splt->contents + h->plt.offset + 12);
3208 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3209 htab->splt->contents + h->plt.offset + 16);
3210 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3211 htab->splt->contents + h->plt.offset + 20);
3212 bfd_put_32 (output_bfd, (bfd_vma) 0,
3213 htab->splt->contents + h->plt.offset + 24);
3214 }
3215 else
3216 {
3217 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3218 htab->splt->contents + h->plt.offset);
3219 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3220 htab->splt->contents + h->plt.offset + 4);
3221 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3222 htab->splt->contents + h->plt.offset + 8);
3223 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3224 htab->splt->contents + h->plt.offset + 12);
3225 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3226 htab->splt->contents + h->plt.offset + 16);
3227 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3228 htab->splt->contents + h->plt.offset + 20);
3229 bfd_put_32 (output_bfd, got_offset,
3230 htab->splt->contents + h->plt.offset + 24);
3231 }
3232 /* Insert offset into reloc. table here. */
3233 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3234 htab->splt->contents + h->plt.offset + 28);
3235
3236 /* Fill in the entry in the global offset table.
3237 Points to instruction after GOT offset. */
3238 bfd_put_32 (output_bfd,
3239 (htab->splt->output_section->vma
3240 + htab->splt->output_offset
3241 + h->plt.offset
3242 + 12),
3243 htab->sgotplt->contents + got_offset);
3244
3245 /* Fill in the entry in the .rela.plt section. */
3246 rela.r_offset = (htab->sgotplt->output_section->vma
3247 + htab->sgotplt->output_offset
3248 + got_offset);
3249 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3250 rela.r_addend = 0;
3251 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3252 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3253
3254 if (!h->def_regular)
3255 {
3256 /* Mark the symbol as undefined, rather than as defined in
3257 the .plt section. Leave the value alone. This is a clue
3258 for the dynamic linker, to make function pointer
3259 comparisons work between an application and shared
3260 library. */
3261 sym->st_shndx = SHN_UNDEF;
3262 }
3263 }
3264
3265 if (h->got.offset != (bfd_vma) -1
3266 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3267 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3268 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3269 {
3270 Elf_Internal_Rela rela;
3271 bfd_byte *loc;
3272
3273 /* This symbol has an entry in the global offset table. Set it
3274 up. */
3275
3276 if (htab->sgot == NULL || htab->srelgot == NULL)
3277 abort ();
3278
3279 rela.r_offset = (htab->sgot->output_section->vma
3280 + htab->sgot->output_offset
3281 + (h->got.offset &~ (bfd_vma) 1));
3282
3283 /* If this is a static link, or it is a -Bsymbolic link and the
3284 symbol is defined locally or was forced to be local because
3285 of a version file, we just want to emit a RELATIVE reloc.
3286 The entry in the global offset table will already have been
3287 initialized in the relocate_section function. */
3288 if (info->shared
3289 && (info->symbolic
3290 || h->dynindx == -1
3291 || h->forced_local)
3292 && h->def_regular)
3293 {
3294 BFD_ASSERT((h->got.offset & 1) != 0);
3295 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3296 rela.r_addend = (h->root.u.def.value
3297 + h->root.u.def.section->output_section->vma
3298 + h->root.u.def.section->output_offset);
3299 }
3300 else
3301 {
3302 BFD_ASSERT((h->got.offset & 1) == 0);
3303 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3304 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3305 rela.r_addend = 0;
3306 }
3307
3308 loc = htab->srelgot->contents;
3309 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3310 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3311 }
3312
3313 if (h->needs_copy)
3314 {
3315 Elf_Internal_Rela rela;
3316 bfd_byte *loc;
3317
3318 /* This symbols needs a copy reloc. Set it up. */
3319
3320 if (h->dynindx == -1
3321 || (h->root.type != bfd_link_hash_defined
3322 && h->root.type != bfd_link_hash_defweak)
3323 || htab->srelbss == NULL)
3324 abort ();
3325
3326 rela.r_offset = (h->root.u.def.value
3327 + h->root.u.def.section->output_section->vma
3328 + h->root.u.def.section->output_offset);
3329 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3330 rela.r_addend = 0;
3331 loc = htab->srelbss->contents;
3332 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3333 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3334 }
3335
3336 /* Mark some specially defined symbols as absolute. */
3337 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3338 || h == htab->elf.hgot
3339 || h == htab->elf.hplt)
3340 sym->st_shndx = SHN_ABS;
3341
3342 return TRUE;
3343 }
3344
3345 /* Used to decide how to sort relocs in an optimal manner for the
3346 dynamic linker, before writing them out. */
3347
3348 static enum elf_reloc_type_class
3349 elf_s390_reloc_type_class (rela)
3350 const Elf_Internal_Rela *rela;
3351 {
3352 switch ((int) ELF32_R_TYPE (rela->r_info))
3353 {
3354 case R_390_RELATIVE:
3355 return reloc_class_relative;
3356 case R_390_JMP_SLOT:
3357 return reloc_class_plt;
3358 case R_390_COPY:
3359 return reloc_class_copy;
3360 default:
3361 return reloc_class_normal;
3362 }
3363 }
3364
3365 /* Finish up the dynamic sections. */
3366
3367 static bfd_boolean
3368 elf_s390_finish_dynamic_sections (output_bfd, info)
3369 bfd *output_bfd;
3370 struct bfd_link_info *info;
3371 {
3372 struct elf_s390_link_hash_table *htab;
3373 bfd *dynobj;
3374 asection *sdyn;
3375
3376 htab = elf_s390_hash_table (info);
3377 dynobj = htab->elf.dynobj;
3378 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3379
3380 if (htab->elf.dynamic_sections_created)
3381 {
3382 Elf32_External_Dyn *dyncon, *dynconend;
3383
3384 if (sdyn == NULL || htab->sgot == NULL)
3385 abort ();
3386
3387 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3388 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3389 for (; dyncon < dynconend; dyncon++)
3390 {
3391 Elf_Internal_Dyn dyn;
3392 asection *s;
3393
3394 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3395
3396 switch (dyn.d_tag)
3397 {
3398 default:
3399 continue;
3400
3401 case DT_PLTGOT:
3402 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3403 break;
3404
3405 case DT_JMPREL:
3406 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3407 break;
3408
3409 case DT_PLTRELSZ:
3410 s = htab->srelplt->output_section;
3411 dyn.d_un.d_val = s->size;
3412 break;
3413 }
3414
3415 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3416 }
3417
3418 /* Fill in the special first entry in the procedure linkage table. */
3419 if (htab->splt && htab->splt->size > 0)
3420 {
3421 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3422 if (info->shared)
3423 {
3424 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3425 htab->splt->contents );
3426 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3427 htab->splt->contents +4 );
3428 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3429 htab->splt->contents +8 );
3430 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3431 htab->splt->contents +12 );
3432 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3433 htab->splt->contents +16 );
3434 }
3435 else
3436 {
3437 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3438 htab->splt->contents );
3439 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3440 htab->splt->contents +4 );
3441 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3442 htab->splt->contents +8 );
3443 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3444 htab->splt->contents +12 );
3445 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3446 htab->splt->contents +16 );
3447 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3448 htab->splt->contents +20 );
3449 bfd_put_32 (output_bfd,
3450 htab->sgotplt->output_section->vma
3451 + htab->sgotplt->output_offset,
3452 htab->splt->contents + 24);
3453 }
3454 elf_section_data (htab->splt->output_section)
3455 ->this_hdr.sh_entsize = 4;
3456 }
3457
3458 }
3459
3460 if (htab->sgotplt)
3461 {
3462 /* Fill in the first three entries in the global offset table. */
3463 if (htab->sgotplt->size > 0)
3464 {
3465 bfd_put_32 (output_bfd,
3466 (sdyn == NULL ? (bfd_vma) 0
3467 : sdyn->output_section->vma + sdyn->output_offset),
3468 htab->sgotplt->contents);
3469 /* One entry for shared object struct ptr. */
3470 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3471 /* One entry for _dl_runtime_resolve. */
3472 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3473 }
3474
3475 elf_section_data (htab->sgotplt->output_section)
3476 ->this_hdr.sh_entsize = 4;
3477 }
3478 return TRUE;
3479 }
3480
3481 static bfd_boolean
3482 elf_s390_grok_prstatus (abfd, note)
3483 bfd * abfd;
3484 Elf_Internal_Note * note;
3485 {
3486 int offset;
3487 unsigned int size;
3488
3489 switch (note->descsz)
3490 {
3491 default:
3492 return FALSE;
3493
3494 case 224: /* S/390 Linux. */
3495 /* pr_cursig */
3496 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3497
3498 /* pr_pid */
3499 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3500
3501 /* pr_reg */
3502 offset = 72;
3503 size = 144;
3504 break;
3505 }
3506
3507 /* Make a ".reg/999" section. */
3508 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3509 size, note->descpos + offset);
3510 }
3511
3512 /* Return address for Ith PLT stub in section PLT, for relocation REL
3513 or (bfd_vma) -1 if it should not be included. */
3514
3515 static bfd_vma
3516 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3517 const arelent *rel ATTRIBUTE_UNUSED)
3518 {
3519 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3520 }
3521
3522
3523 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3524 #define TARGET_BIG_NAME "elf32-s390"
3525 #define ELF_ARCH bfd_arch_s390
3526 #define ELF_MACHINE_CODE EM_S390
3527 #define ELF_MACHINE_ALT1 EM_S390_OLD
3528 #define ELF_MAXPAGESIZE 0x1000
3529
3530 #define elf_backend_can_gc_sections 1
3531 #define elf_backend_can_refcount 1
3532 #define elf_backend_want_got_plt 1
3533 #define elf_backend_plt_readonly 1
3534 #define elf_backend_want_plt_sym 0
3535 #define elf_backend_got_header_size 12
3536 #define elf_backend_rela_normal 1
3537
3538 #define elf_info_to_howto elf_s390_info_to_howto
3539
3540 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3541 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3542 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3543 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3544
3545 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3546 #define elf_backend_check_relocs elf_s390_check_relocs
3547 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3548 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3549 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3550 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3551 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3552 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3553 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3554 #define elf_backend_relocate_section elf_s390_relocate_section
3555 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3556 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3557 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3558 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3559 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3560
3561 #define bfd_elf32_mkobject elf_s390_mkobject
3562 #define elf_backend_object_p elf_s390_object_p
3563
3564 #include "elf32-target.h"
git-cvsimport of binutils cvsroot