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[binutils.git] / bfd / elf32-s390.c
blob75d9692e974e17be8862d1cc582938dbad18a283
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 2 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 "bfd.h"
24 #include "sysdep.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 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1380 return FALSE;
1381 break;
1382
1383 default:
1384 break;
1385 }
1386 }
1387
1388 return TRUE;
1389 }
1390
1391 /* Return the section that should be marked against GC for a given
1392 relocation. */
1393
1394 static asection *
1395 elf_s390_gc_mark_hook (asection *sec,
1396 struct bfd_link_info *info,
1397 Elf_Internal_Rela *rel,
1398 struct elf_link_hash_entry *h,
1399 Elf_Internal_Sym *sym)
1400 {
1401 if (h != NULL)
1402 switch (ELF32_R_TYPE (rel->r_info))
1403 {
1404 case R_390_GNU_VTINHERIT:
1405 case R_390_GNU_VTENTRY:
1406 return NULL;
1407 }
1408 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1409
1410 }
1411
1412 /* Update the got entry reference counts for the section being removed. */
1413
1414 static bfd_boolean
1415 elf_s390_gc_sweep_hook (bfd *abfd,
1416 struct bfd_link_info *info,
1417 asection *sec,
1418 const Elf_Internal_Rela *relocs)
1419 {
1420 Elf_Internal_Shdr *symtab_hdr;
1421 struct elf_link_hash_entry **sym_hashes;
1422 bfd_signed_vma *local_got_refcounts;
1423 const Elf_Internal_Rela *rel, *relend;
1424
1425 elf_section_data (sec)->local_dynrel = NULL;
1426
1427 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1428 sym_hashes = elf_sym_hashes (abfd);
1429 local_got_refcounts = elf_local_got_refcounts (abfd);
1430
1431 relend = relocs + sec->reloc_count;
1432 for (rel = relocs; rel < relend; rel++)
1433 {
1434 unsigned long r_symndx;
1435 unsigned int r_type;
1436 struct elf_link_hash_entry *h = NULL;
1437
1438 r_symndx = ELF32_R_SYM (rel->r_info);
1439 if (r_symndx >= symtab_hdr->sh_info)
1440 {
1441 struct elf_s390_link_hash_entry *eh;
1442 struct elf_s390_dyn_relocs **pp;
1443 struct elf_s390_dyn_relocs *p;
1444
1445 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1446 while (h->root.type == bfd_link_hash_indirect
1447 || h->root.type == bfd_link_hash_warning)
1448 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1449 eh = (struct elf_s390_link_hash_entry *) h;
1450
1451 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1452 if (p->sec == sec)
1453 {
1454 /* Everything must go for SEC. */
1455 *pp = p->next;
1456 break;
1457 }
1458 }
1459
1460 r_type = ELF32_R_TYPE (rel->r_info);
1461 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1462 switch (r_type)
1463 {
1464 case R_390_TLS_LDM32:
1465 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1466 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1467 break;
1468
1469 case R_390_TLS_GD32:
1470 case R_390_TLS_IE32:
1471 case R_390_TLS_GOTIE12:
1472 case R_390_TLS_GOTIE20:
1473 case R_390_TLS_GOTIE32:
1474 case R_390_TLS_IEENT:
1475 case R_390_GOT12:
1476 case R_390_GOT16:
1477 case R_390_GOT20:
1478 case R_390_GOT32:
1479 case R_390_GOTOFF16:
1480 case R_390_GOTOFF32:
1481 case R_390_GOTPC:
1482 case R_390_GOTPCDBL:
1483 case R_390_GOTENT:
1484 if (h != NULL)
1485 {
1486 if (h->got.refcount > 0)
1487 h->got.refcount -= 1;
1488 }
1489 else if (local_got_refcounts != NULL)
1490 {
1491 if (local_got_refcounts[r_symndx] > 0)
1492 local_got_refcounts[r_symndx] -= 1;
1493 }
1494 break;
1495
1496 case R_390_8:
1497 case R_390_12:
1498 case R_390_16:
1499 case R_390_20:
1500 case R_390_32:
1501 case R_390_PC16:
1502 case R_390_PC16DBL:
1503 case R_390_PC32DBL:
1504 case R_390_PC32:
1505 if (info->shared)
1506 break;
1507 /* Fall through. */
1508
1509 case R_390_PLT16DBL:
1510 case R_390_PLT32DBL:
1511 case R_390_PLT32:
1512 case R_390_PLTOFF16:
1513 case R_390_PLTOFF32:
1514 if (h != NULL)
1515 {
1516 if (h->plt.refcount > 0)
1517 h->plt.refcount -= 1;
1518 }
1519 break;
1520
1521 case R_390_GOTPLT12:
1522 case R_390_GOTPLT16:
1523 case R_390_GOTPLT20:
1524 case R_390_GOTPLT32:
1525 case R_390_GOTPLTENT:
1526 if (h != NULL)
1527 {
1528 if (h->plt.refcount > 0)
1529 {
1530 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1531 h->plt.refcount -= 1;
1532 }
1533 }
1534 else if (local_got_refcounts != NULL)
1535 {
1536 if (local_got_refcounts[r_symndx] > 0)
1537 local_got_refcounts[r_symndx] -= 1;
1538 }
1539 break;
1540
1541 default:
1542 break;
1543 }
1544 }
1545
1546 return TRUE;
1547 }
1548
1549 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1550 entry but we found we will not create any. Called when we find we will
1551 not have any PLT for this symbol, by for example
1552 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1553 or elf_s390_size_dynamic_sections if no dynamic sections will be
1554 created (we're only linking static objects). */
1555
1556 static void
1557 elf_s390_adjust_gotplt (h)
1558 struct elf_s390_link_hash_entry *h;
1559 {
1560 if (h->elf.root.type == bfd_link_hash_warning)
1561 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1562
1563 if (h->gotplt_refcount <= 0)
1564 return;
1565
1566 /* We simply add the number of gotplt references to the number
1567 * of got references for this symbol. */
1568 h->elf.got.refcount += h->gotplt_refcount;
1569 h->gotplt_refcount = -1;
1570 }
1571
1572 /* Adjust a symbol defined by a dynamic object and referenced by a
1573 regular object. The current definition is in some section of the
1574 dynamic object, but we're not including those sections. We have to
1575 change the definition to something the rest of the link can
1576 understand. */
1577
1578 static bfd_boolean
1579 elf_s390_adjust_dynamic_symbol (info, h)
1580 struct bfd_link_info *info;
1581 struct elf_link_hash_entry *h;
1582 {
1583 struct elf_s390_link_hash_table *htab;
1584 asection *s;
1585 unsigned int power_of_two;
1586
1587 /* If this is a function, put it in the procedure linkage table. We
1588 will fill in the contents of the procedure linkage table later
1589 (although we could actually do it here). */
1590 if (h->type == STT_FUNC
1591 || h->needs_plt)
1592 {
1593 if (h->plt.refcount <= 0
1594 || (! info->shared
1595 && !h->def_dynamic
1596 && !h->ref_dynamic
1597 && h->root.type != bfd_link_hash_undefweak
1598 && h->root.type != bfd_link_hash_undefined))
1599 {
1600 /* This case can occur if we saw a PLT32 reloc in an input
1601 file, but the symbol was never referred to by a dynamic
1602 object, or if all references were garbage collected. In
1603 such a case, we don't actually need to build a procedure
1604 linkage table, and we can just do a PC32 reloc instead. */
1605 h->plt.offset = (bfd_vma) -1;
1606 h->needs_plt = 0;
1607 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1608 }
1609
1610 return TRUE;
1611 }
1612 else
1613 /* It's possible that we incorrectly decided a .plt reloc was
1614 needed for an R_390_PC32 reloc to a non-function sym in
1615 check_relocs. We can't decide accurately between function and
1616 non-function syms in check-relocs; Objects loaded later in
1617 the link may change h->type. So fix it now. */
1618 h->plt.offset = (bfd_vma) -1;
1619
1620 /* If this is a weak symbol, and there is a real definition, the
1621 processor independent code will have arranged for us to see the
1622 real definition first, and we can just use the same value. */
1623 if (h->u.weakdef != NULL)
1624 {
1625 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1626 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1627 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1628 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1629 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1630 h->non_got_ref = h->u.weakdef->non_got_ref;
1631 return TRUE;
1632 }
1633
1634 /* This is a reference to a symbol defined by a dynamic object which
1635 is not a function. */
1636
1637 /* If we are creating a shared library, we must presume that the
1638 only references to the symbol are via the global offset table.
1639 For such cases we need not do anything here; the relocations will
1640 be handled correctly by relocate_section. */
1641 if (info->shared)
1642 return TRUE;
1643
1644 /* If there are no references to this symbol that do not use the
1645 GOT, we don't need to generate a copy reloc. */
1646 if (!h->non_got_ref)
1647 return TRUE;
1648
1649 /* If -z nocopyreloc was given, we won't generate them either. */
1650 if (info->nocopyreloc)
1651 {
1652 h->non_got_ref = 0;
1653 return TRUE;
1654 }
1655
1656 if (ELIMINATE_COPY_RELOCS)
1657 {
1658 struct elf_s390_link_hash_entry * eh;
1659 struct elf_s390_dyn_relocs *p;
1660
1661 eh = (struct elf_s390_link_hash_entry *) h;
1662 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1663 {
1664 s = p->sec->output_section;
1665 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1666 break;
1667 }
1668
1669 /* If we didn't find any dynamic relocs in read-only sections, then
1670 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1671 if (p == NULL)
1672 {
1673 h->non_got_ref = 0;
1674 return TRUE;
1675 }
1676 }
1677
1678 if (h->size == 0)
1679 {
1680 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1681 h->root.root.string);
1682 return TRUE;
1683 }
1684
1685 /* We must allocate the symbol in our .dynbss section, which will
1686 become part of the .bss section of the executable. There will be
1687 an entry for this symbol in the .dynsym section. The dynamic
1688 object will contain position independent code, so all references
1689 from the dynamic object to this symbol will go through the global
1690 offset table. The dynamic linker will use the .dynsym entry to
1691 determine the address it must put in the global offset table, so
1692 both the dynamic object and the regular object will refer to the
1693 same memory location for the variable. */
1694
1695 htab = elf_s390_hash_table (info);
1696
1697 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1698 copy the initial value out of the dynamic object and into the
1699 runtime process image. */
1700 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1701 {
1702 htab->srelbss->size += sizeof (Elf32_External_Rela);
1703 h->needs_copy = 1;
1704 }
1705
1706 /* We need to figure out the alignment required for this symbol. I
1707 have no idea how ELF linkers handle this. */
1708 power_of_two = bfd_log2 (h->size);
1709 if (power_of_two > 3)
1710 power_of_two = 3;
1711
1712 /* Apply the required alignment. */
1713 s = htab->sdynbss;
1714 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1715 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1716 {
1717 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1718 return FALSE;
1719 }
1720
1721 /* Define the symbol as being at this point in the section. */
1722 h->root.u.def.section = s;
1723 h->root.u.def.value = s->size;
1724
1725 /* Increment the section size to make room for the symbol. */
1726 s->size += h->size;
1727
1728 return TRUE;
1729 }
1730
1731 /* Allocate space in .plt, .got and associated reloc sections for
1732 dynamic relocs. */
1733
1734 static bfd_boolean
1735 allocate_dynrelocs (h, inf)
1736 struct elf_link_hash_entry *h;
1737 PTR inf;
1738 {
1739 struct bfd_link_info *info;
1740 struct elf_s390_link_hash_table *htab;
1741 struct elf_s390_link_hash_entry *eh;
1742 struct elf_s390_dyn_relocs *p;
1743
1744 if (h->root.type == bfd_link_hash_indirect)
1745 return TRUE;
1746
1747 if (h->root.type == bfd_link_hash_warning)
1748 /* When warning symbols are created, they **replace** the "real"
1749 entry in the hash table, thus we never get to see the real
1750 symbol in a hash traversal. So look at it now. */
1751 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1752
1753 info = (struct bfd_link_info *) inf;
1754 htab = elf_s390_hash_table (info);
1755
1756 if (htab->elf.dynamic_sections_created
1757 && h->plt.refcount > 0
1758 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1759 || h->root.type != bfd_link_hash_undefweak))
1760 {
1761 /* Make sure this symbol is output as a dynamic symbol.
1762 Undefined weak syms won't yet be marked as dynamic. */
1763 if (h->dynindx == -1
1764 && !h->forced_local)
1765 {
1766 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1767 return FALSE;
1768 }
1769
1770 if (info->shared
1771 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1772 {
1773 asection *s = htab->splt;
1774
1775 /* If this is the first .plt entry, make room for the special
1776 first entry. */
1777 if (s->size == 0)
1778 s->size += PLT_FIRST_ENTRY_SIZE;
1779
1780 h->plt.offset = s->size;
1781
1782 /* If this symbol is not defined in a regular file, and we are
1783 not generating a shared library, then set the symbol to this
1784 location in the .plt. This is required to make function
1785 pointers compare as equal between the normal executable and
1786 the shared library. */
1787 if (! info->shared
1788 && !h->def_regular)
1789 {
1790 h->root.u.def.section = s;
1791 h->root.u.def.value = h->plt.offset;
1792 }
1793
1794 /* Make room for this entry. */
1795 s->size += PLT_ENTRY_SIZE;
1796
1797 /* We also need to make an entry in the .got.plt section, which
1798 will be placed in the .got section by the linker script. */
1799 htab->sgotplt->size += GOT_ENTRY_SIZE;
1800
1801 /* We also need to make an entry in the .rela.plt section. */
1802 htab->srelplt->size += sizeof (Elf32_External_Rela);
1803 }
1804 else
1805 {
1806 h->plt.offset = (bfd_vma) -1;
1807 h->needs_plt = 0;
1808 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1809 }
1810 }
1811 else
1812 {
1813 h->plt.offset = (bfd_vma) -1;
1814 h->needs_plt = 0;
1815 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1816 }
1817
1818 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1819 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1820 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1821 we can save the dynamic TLS relocation. */
1822 if (h->got.refcount > 0
1823 && !info->shared
1824 && h->dynindx == -1
1825 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1826 {
1827 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1828 /* For the GOTIE access without a literal pool entry the offset has
1829 to be stored somewhere. The immediate value in the instruction
1830 is not bit enough so the value is stored in the got. */
1831 {
1832 h->got.offset = htab->sgot->size;
1833 htab->sgot->size += GOT_ENTRY_SIZE;
1834 }
1835 else
1836 h->got.offset = (bfd_vma) -1;
1837 }
1838 else if (h->got.refcount > 0)
1839 {
1840 asection *s;
1841 bfd_boolean dyn;
1842 int tls_type = elf_s390_hash_entry(h)->tls_type;
1843
1844 /* Make sure this symbol is output as a dynamic symbol.
1845 Undefined weak syms won't yet be marked as dynamic. */
1846 if (h->dynindx == -1
1847 && !h->forced_local)
1848 {
1849 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1850 return FALSE;
1851 }
1852
1853 s = htab->sgot;
1854 h->got.offset = s->size;
1855 s->size += GOT_ENTRY_SIZE;
1856 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1857 if (tls_type == GOT_TLS_GD)
1858 s->size += GOT_ENTRY_SIZE;
1859 dyn = htab->elf.dynamic_sections_created;
1860 /* R_390_TLS_IE32 needs one dynamic relocation,
1861 R_390_TLS_GD32 needs one if local symbol and two if global. */
1862 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1863 || tls_type >= GOT_TLS_IE)
1864 htab->srelgot->size += sizeof (Elf32_External_Rela);
1865 else if (tls_type == GOT_TLS_GD)
1866 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1867 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1868 || h->root.type != bfd_link_hash_undefweak)
1869 && (info->shared
1870 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1871 htab->srelgot->size += sizeof (Elf32_External_Rela);
1872 }
1873 else
1874 h->got.offset = (bfd_vma) -1;
1875
1876 eh = (struct elf_s390_link_hash_entry *) h;
1877 if (eh->dyn_relocs == NULL)
1878 return TRUE;
1879
1880 /* In the shared -Bsymbolic case, discard space allocated for
1881 dynamic pc-relative relocs against symbols which turn out to be
1882 defined in regular objects. For the normal shared case, discard
1883 space for pc-relative relocs that have become local due to symbol
1884 visibility changes. */
1885
1886 if (info->shared)
1887 {
1888 if (SYMBOL_REFERENCES_LOCAL (info, h))
1889 {
1890 struct elf_s390_dyn_relocs **pp;
1891
1892 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1893 {
1894 p->count -= p->pc_count;
1895 p->pc_count = 0;
1896 if (p->count == 0)
1897 *pp = p->next;
1898 else
1899 pp = &p->next;
1900 }
1901 }
1902
1903 /* Also discard relocs on undefined weak syms with non-default
1904 visibility. */
1905 if (eh->dyn_relocs != NULL
1906 && h->root.type == bfd_link_hash_undefweak)
1907 {
1908 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1909 eh->dyn_relocs = NULL;
1910
1911 /* Make sure undefined weak symbols are output as a dynamic
1912 symbol in PIEs. */
1913 else if (h->dynindx == -1
1914 && !h->forced_local)
1915 {
1916 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1917 return FALSE;
1918 }
1919 }
1920 }
1921 else if (ELIMINATE_COPY_RELOCS)
1922 {
1923 /* For the non-shared case, discard space for relocs against
1924 symbols which turn out to need copy relocs or are not
1925 dynamic. */
1926
1927 if (!h->non_got_ref
1928 && ((h->def_dynamic
1929 && !h->def_regular)
1930 || (htab->elf.dynamic_sections_created
1931 && (h->root.type == bfd_link_hash_undefweak
1932 || h->root.type == bfd_link_hash_undefined))))
1933 {
1934 /* Make sure this symbol is output as a dynamic symbol.
1935 Undefined weak syms won't yet be marked as dynamic. */
1936 if (h->dynindx == -1
1937 && !h->forced_local)
1938 {
1939 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1940 return FALSE;
1941 }
1942
1943 /* If that succeeded, we know we'll be keeping all the
1944 relocs. */
1945 if (h->dynindx != -1)
1946 goto keep;
1947 }
1948
1949 eh->dyn_relocs = NULL;
1950
1951 keep: ;
1952 }
1953
1954 /* Finally, allocate space. */
1955 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1956 {
1957 asection *sreloc = elf_section_data (p->sec)->sreloc;
1958
1959 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1960 }
1961
1962 return TRUE;
1963 }
1964
1965 /* Find any dynamic relocs that apply to read-only sections. */
1966
1967 static bfd_boolean
1968 readonly_dynrelocs (h, inf)
1969 struct elf_link_hash_entry *h;
1970 PTR inf;
1971 {
1972 struct elf_s390_link_hash_entry *eh;
1973 struct elf_s390_dyn_relocs *p;
1974
1975 if (h->root.type == bfd_link_hash_warning)
1976 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1977
1978 eh = (struct elf_s390_link_hash_entry *) h;
1979 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1980 {
1981 asection *s = p->sec->output_section;
1982
1983 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1984 {
1985 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1986
1987 info->flags |= DF_TEXTREL;
1988
1989 /* Not an error, just cut short the traversal. */
1990 return FALSE;
1991 }
1992 }
1993 return TRUE;
1994 }
1995
1996 /* Set the sizes of the dynamic sections. */
1997
1998 static bfd_boolean
1999 elf_s390_size_dynamic_sections (output_bfd, info)
2000 bfd *output_bfd ATTRIBUTE_UNUSED;
2001 struct bfd_link_info *info;
2002 {
2003 struct elf_s390_link_hash_table *htab;
2004 bfd *dynobj;
2005 asection *s;
2006 bfd_boolean relocs;
2007 bfd *ibfd;
2008
2009 htab = elf_s390_hash_table (info);
2010 dynobj = htab->elf.dynobj;
2011 if (dynobj == NULL)
2012 abort ();
2013
2014 if (htab->elf.dynamic_sections_created)
2015 {
2016 /* Set the contents of the .interp section to the interpreter. */
2017 if (info->executable)
2018 {
2019 s = bfd_get_section_by_name (dynobj, ".interp");
2020 if (s == NULL)
2021 abort ();
2022 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2023 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2024 }
2025 }
2026
2027 /* Set up .got offsets for local syms, and space for local dynamic
2028 relocs. */
2029 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2030 {
2031 bfd_signed_vma *local_got;
2032 bfd_signed_vma *end_local_got;
2033 char *local_tls_type;
2034 bfd_size_type locsymcount;
2035 Elf_Internal_Shdr *symtab_hdr;
2036 asection *srela;
2037
2038 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2039 continue;
2040
2041 for (s = ibfd->sections; s != NULL; s = s->next)
2042 {
2043 struct elf_s390_dyn_relocs *p;
2044
2045 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2046 {
2047 if (!bfd_is_abs_section (p->sec)
2048 && bfd_is_abs_section (p->sec->output_section))
2049 {
2050 /* Input section has been discarded, either because
2051 it is a copy of a linkonce section or due to
2052 linker script /DISCARD/, so we'll be discarding
2053 the relocs too. */
2054 }
2055 else if (p->count != 0)
2056 {
2057 srela = elf_section_data (p->sec)->sreloc;
2058 srela->size += p->count * sizeof (Elf32_External_Rela);
2059 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2060 info->flags |= DF_TEXTREL;
2061 }
2062 }
2063 }
2064
2065 local_got = elf_local_got_refcounts (ibfd);
2066 if (!local_got)
2067 continue;
2068
2069 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2070 locsymcount = symtab_hdr->sh_info;
2071 end_local_got = local_got + locsymcount;
2072 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2073 s = htab->sgot;
2074 srela = htab->srelgot;
2075 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2076 {
2077 if (*local_got > 0)
2078 {
2079 *local_got = s->size;
2080 s->size += GOT_ENTRY_SIZE;
2081 if (*local_tls_type == GOT_TLS_GD)
2082 s->size += GOT_ENTRY_SIZE;
2083 if (info->shared)
2084 srela->size += sizeof (Elf32_External_Rela);
2085 }
2086 else
2087 *local_got = (bfd_vma) -1;
2088 }
2089 }
2090
2091 if (htab->tls_ldm_got.refcount > 0)
2092 {
2093 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2094 relocs. */
2095 htab->tls_ldm_got.offset = htab->sgot->size;
2096 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2097 htab->srelgot->size += sizeof (Elf32_External_Rela);
2098 }
2099 else
2100 htab->tls_ldm_got.offset = -1;
2101
2102 /* Allocate global sym .plt and .got entries, and space for global
2103 sym dynamic relocs. */
2104 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2105
2106 /* We now have determined the sizes of the various dynamic sections.
2107 Allocate memory for them. */
2108 relocs = FALSE;
2109 for (s = dynobj->sections; s != NULL; s = s->next)
2110 {
2111 if ((s->flags & SEC_LINKER_CREATED) == 0)
2112 continue;
2113
2114 if (s == htab->splt
2115 || s == htab->sgot
2116 || s == htab->sgotplt
2117 || s == htab->sdynbss)
2118 {
2119 /* Strip this section if we don't need it; see the
2120 comment below. */
2121 }
2122 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2123 {
2124 if (s->size != 0)
2125 relocs = TRUE;
2126
2127 /* We use the reloc_count field as a counter if we need
2128 to copy relocs into the output file. */
2129 s->reloc_count = 0;
2130 }
2131 else
2132 {
2133 /* It's not one of our sections, so don't allocate space. */
2134 continue;
2135 }
2136
2137 if (s->size == 0)
2138 {
2139 /* If we don't need this section, strip it from the
2140 output file. This is to handle .rela.bss and
2141 .rela.plt. We must create it in
2142 create_dynamic_sections, because it must be created
2143 before the linker maps input sections to output
2144 sections. The linker does that before
2145 adjust_dynamic_symbol is called, and it is that
2146 function which decides whether anything needs to go
2147 into these sections. */
2148
2149 s->flags |= SEC_EXCLUDE;
2150 continue;
2151 }
2152
2153 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2154 continue;
2155
2156 /* Allocate memory for the section contents. We use bfd_zalloc
2157 here in case unused entries are not reclaimed before the
2158 section's contents are written out. This should not happen,
2159 but this way if it does, we get a R_390_NONE reloc instead
2160 of garbage. */
2161 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2162 if (s->contents == NULL)
2163 return FALSE;
2164 }
2165
2166 if (htab->elf.dynamic_sections_created)
2167 {
2168 /* Add some entries to the .dynamic section. We fill in the
2169 values later, in elf_s390_finish_dynamic_sections, but we
2170 must add the entries now so that we get the correct size for
2171 the .dynamic section. The DT_DEBUG entry is filled in by the
2172 dynamic linker and used by the debugger. */
2173 #define add_dynamic_entry(TAG, VAL) \
2174 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2175
2176 if (info->executable)
2177 {
2178 if (!add_dynamic_entry (DT_DEBUG, 0))
2179 return FALSE;
2180 }
2181
2182 if (htab->splt->size != 0)
2183 {
2184 if (!add_dynamic_entry (DT_PLTGOT, 0)
2185 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2186 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2187 || !add_dynamic_entry (DT_JMPREL, 0))
2188 return FALSE;
2189 }
2190
2191 if (relocs)
2192 {
2193 if (!add_dynamic_entry (DT_RELA, 0)
2194 || !add_dynamic_entry (DT_RELASZ, 0)
2195 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2196 return FALSE;
2197
2198 /* If any dynamic relocs apply to a read-only section,
2199 then we need a DT_TEXTREL entry. */
2200 if ((info->flags & DF_TEXTREL) == 0)
2201 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2202 (PTR) info);
2203
2204 if ((info->flags & DF_TEXTREL) != 0)
2205 {
2206 if (!add_dynamic_entry (DT_TEXTREL, 0))
2207 return FALSE;
2208 }
2209 }
2210 }
2211 #undef add_dynamic_entry
2212
2213 return TRUE;
2214 }
2215
2216 /* Return the base VMA address which should be subtracted from real addresses
2217 when resolving @dtpoff relocation.
2218 This is PT_TLS segment p_vaddr. */
2219
2220 static bfd_vma
2221 dtpoff_base (info)
2222 struct bfd_link_info *info;
2223 {
2224 /* If tls_sec is NULL, we should have signalled an error already. */
2225 if (elf_hash_table (info)->tls_sec == NULL)
2226 return 0;
2227 return elf_hash_table (info)->tls_sec->vma;
2228 }
2229
2230 /* Return the relocation value for @tpoff relocation
2231 if STT_TLS virtual address is ADDRESS. */
2232
2233 static bfd_vma
2234 tpoff (info, address)
2235 struct bfd_link_info *info;
2236 bfd_vma address;
2237 {
2238 struct elf_link_hash_table *htab = elf_hash_table (info);
2239
2240 /* If tls_sec is NULL, we should have signalled an error already. */
2241 if (htab->tls_sec == NULL)
2242 return 0;
2243 return htab->tls_size + htab->tls_sec->vma - address;
2244 }
2245
2246 /* Complain if TLS instruction relocation is against an invalid
2247 instruction. */
2248
2249 static void
2250 invalid_tls_insn (input_bfd, input_section, rel)
2251 bfd *input_bfd;
2252 asection *input_section;
2253 Elf_Internal_Rela *rel;
2254 {
2255 reloc_howto_type *howto;
2256
2257 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2258 (*_bfd_error_handler)
2259 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2260 input_bfd,
2261 input_section,
2262 (long) rel->r_offset,
2263 howto->name);
2264 bfd_set_error (bfd_error_bad_value);
2265 }
2266
2267 /* Relocate a 390 ELF section. */
2268
2269 static bfd_boolean
2270 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2271 contents, relocs, local_syms, local_sections)
2272 bfd *output_bfd;
2273 struct bfd_link_info *info;
2274 bfd *input_bfd;
2275 asection *input_section;
2276 bfd_byte *contents;
2277 Elf_Internal_Rela *relocs;
2278 Elf_Internal_Sym *local_syms;
2279 asection **local_sections;
2280 {
2281 struct elf_s390_link_hash_table *htab;
2282 Elf_Internal_Shdr *symtab_hdr;
2283 struct elf_link_hash_entry **sym_hashes;
2284 bfd_vma *local_got_offsets;
2285 Elf_Internal_Rela *rel;
2286 Elf_Internal_Rela *relend;
2287
2288 htab = elf_s390_hash_table (info);
2289 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2290 sym_hashes = elf_sym_hashes (input_bfd);
2291 local_got_offsets = elf_local_got_offsets (input_bfd);
2292
2293 rel = relocs;
2294 relend = relocs + input_section->reloc_count;
2295 for (; rel < relend; rel++)
2296 {
2297 unsigned int r_type;
2298 reloc_howto_type *howto;
2299 unsigned long r_symndx;
2300 struct elf_link_hash_entry *h;
2301 Elf_Internal_Sym *sym;
2302 asection *sec;
2303 bfd_vma off;
2304 bfd_vma relocation;
2305 bfd_boolean unresolved_reloc;
2306 bfd_reloc_status_type r;
2307 int tls_type;
2308
2309 r_type = ELF32_R_TYPE (rel->r_info);
2310 if (r_type == (int) R_390_GNU_VTINHERIT
2311 || r_type == (int) R_390_GNU_VTENTRY)
2312 continue;
2313 if (r_type >= (int) R_390_max)
2314 {
2315 bfd_set_error (bfd_error_bad_value);
2316 return FALSE;
2317 }
2318
2319 howto = elf_howto_table + r_type;
2320 r_symndx = ELF32_R_SYM (rel->r_info);
2321
2322 h = NULL;
2323 sym = NULL;
2324 sec = NULL;
2325 unresolved_reloc = FALSE;
2326 if (r_symndx < symtab_hdr->sh_info)
2327 {
2328 sym = local_syms + r_symndx;
2329 sec = local_sections[r_symndx];
2330 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2331 }
2332 else
2333 {
2334 bfd_boolean warned ATTRIBUTE_UNUSED;
2335
2336 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2337 r_symndx, symtab_hdr, sym_hashes,
2338 h, sec, relocation,
2339 unresolved_reloc, warned);
2340 }
2341
2342 if (sec != NULL && elf_discarded_section (sec))
2343 {
2344 /* For relocs against symbols from removed linkonce sections,
2345 or sections discarded by a linker script, we just want the
2346 section contents zeroed. Avoid any special processing. */
2347 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2348 rel->r_info = 0;
2349 rel->r_addend = 0;
2350 continue;
2351 }
2352
2353 if (info->relocatable)
2354 continue;
2355
2356 switch (r_type)
2357 {
2358 case R_390_GOTPLT12:
2359 case R_390_GOTPLT16:
2360 case R_390_GOTPLT20:
2361 case R_390_GOTPLT32:
2362 case R_390_GOTPLTENT:
2363 /* There are three cases for a GOTPLT relocation. 1) The
2364 relocation is against the jump slot entry of a plt that
2365 will get emitted to the output file. 2) The relocation
2366 is against the jump slot of a plt entry that has been
2367 removed. elf_s390_adjust_gotplt has created a GOT entry
2368 as replacement. 3) The relocation is against a local symbol.
2369 Cases 2) and 3) are the same as the GOT relocation code
2370 so we just have to test for case 1 and fall through for
2371 the other two. */
2372 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2373 {
2374 bfd_vma plt_index;
2375
2376 /* Calc. index no.
2377 Current offset - size first entry / entry size. */
2378 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2379 PLT_ENTRY_SIZE;
2380
2381 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2382 addr & GOT addr. */
2383 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2384 unresolved_reloc = FALSE;
2385
2386 if (r_type == R_390_GOTPLTENT)
2387 relocation += htab->sgot->output_section->vma;
2388 break;
2389 }
2390 /* Fall through. */
2391
2392 case R_390_GOT12:
2393 case R_390_GOT16:
2394 case R_390_GOT20:
2395 case R_390_GOT32:
2396 case R_390_GOTENT:
2397 /* Relocation is to the entry for this symbol in the global
2398 offset table. */
2399 if (htab->sgot == NULL)
2400 abort ();
2401
2402 if (h != NULL)
2403 {
2404 bfd_boolean dyn;
2405
2406 off = h->got.offset;
2407 dyn = htab->elf.dynamic_sections_created;
2408 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2409 || (info->shared
2410 && (info->symbolic
2411 || h->dynindx == -1
2412 || h->forced_local)
2413 && h->def_regular)
2414 || (ELF_ST_VISIBILITY (h->other)
2415 && h->root.type == bfd_link_hash_undefweak))
2416 {
2417 /* This is actually a static link, or it is a
2418 -Bsymbolic link and the symbol is defined
2419 locally, or the symbol was forced to be local
2420 because of a version file. We must initialize
2421 this entry in the global offset table. Since the
2422 offset must always be a multiple of 2, we use the
2423 least significant bit to record whether we have
2424 initialized it already.
2425
2426 When doing a dynamic link, we create a .rel.got
2427 relocation entry to initialize the value. This
2428 is done in the finish_dynamic_symbol routine. */
2429 if ((off & 1) != 0)
2430 off &= ~1;
2431 else
2432 {
2433 bfd_put_32 (output_bfd, relocation,
2434 htab->sgot->contents + off);
2435 h->got.offset |= 1;
2436 }
2437 }
2438 else
2439 unresolved_reloc = FALSE;
2440 }
2441 else
2442 {
2443 if (local_got_offsets == NULL)
2444 abort ();
2445
2446 off = local_got_offsets[r_symndx];
2447
2448 /* The offset must always be a multiple of 4. We use
2449 the least significant bit to record whether we have
2450 already generated the necessary reloc. */
2451 if ((off & 1) != 0)
2452 off &= ~1;
2453 else
2454 {
2455 bfd_put_32 (output_bfd, relocation,
2456 htab->sgot->contents + off);
2457
2458 if (info->shared)
2459 {
2460 asection *srelgot;
2461 Elf_Internal_Rela outrel;
2462 bfd_byte *loc;
2463
2464 srelgot = htab->srelgot;
2465 if (srelgot == NULL)
2466 abort ();
2467
2468 outrel.r_offset = (htab->sgot->output_section->vma
2469 + htab->sgot->output_offset
2470 + off);
2471 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2472 outrel.r_addend = relocation;
2473 loc = srelgot->contents;
2474 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2475 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2476 }
2477
2478 local_got_offsets[r_symndx] |= 1;
2479 }
2480 }
2481
2482 if (off >= (bfd_vma) -2)
2483 abort ();
2484
2485 relocation = htab->sgot->output_offset + off;
2486
2487 /* For @GOTENT the relocation is against the offset between
2488 the instruction and the symbols entry in the GOT and not
2489 between the start of the GOT and the symbols entry. We
2490 add the vma of the GOT to get the correct value. */
2491 if ( r_type == R_390_GOTENT
2492 || r_type == R_390_GOTPLTENT)
2493 relocation += htab->sgot->output_section->vma;
2494
2495 break;
2496
2497 case R_390_GOTOFF16:
2498 case R_390_GOTOFF32:
2499 /* Relocation is relative to the start of the global offset
2500 table. */
2501
2502 /* Note that sgot->output_offset is not involved in this
2503 calculation. We always want the start of .got. If we
2504 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2505 permitted by the ABI, we might have to change this
2506 calculation. */
2507 relocation -= htab->sgot->output_section->vma;
2508 break;
2509
2510 case R_390_GOTPC:
2511 case R_390_GOTPCDBL:
2512 /* Use global offset table as symbol value. */
2513 relocation = htab->sgot->output_section->vma;
2514 unresolved_reloc = FALSE;
2515 break;
2516
2517 case R_390_PLT16DBL:
2518 case R_390_PLT32DBL:
2519 case R_390_PLT32:
2520 /* Relocation is to the entry for this symbol in the
2521 procedure linkage table. */
2522
2523 /* Resolve a PLT32 reloc against a local symbol directly,
2524 without using the procedure linkage table. */
2525 if (h == NULL)
2526 break;
2527
2528 if (h->plt.offset == (bfd_vma) -1
2529 || htab->splt == NULL)
2530 {
2531 /* We didn't make a PLT entry for this symbol. This
2532 happens when statically linking PIC code, or when
2533 using -Bsymbolic. */
2534 break;
2535 }
2536
2537 relocation = (htab->splt->output_section->vma
2538 + htab->splt->output_offset
2539 + h->plt.offset);
2540 unresolved_reloc = FALSE;
2541 break;
2542
2543 case R_390_PLTOFF16:
2544 case R_390_PLTOFF32:
2545 /* Relocation is to the entry for this symbol in the
2546 procedure linkage table relative to the start of the GOT. */
2547
2548 /* For local symbols or if we didn't make a PLT entry for
2549 this symbol resolve the symbol directly. */
2550 if ( h == NULL
2551 || h->plt.offset == (bfd_vma) -1
2552 || htab->splt == NULL)
2553 {
2554 relocation -= htab->sgot->output_section->vma;
2555 break;
2556 }
2557
2558 relocation = (htab->splt->output_section->vma
2559 + htab->splt->output_offset
2560 + h->plt.offset
2561 - htab->sgot->output_section->vma);
2562 unresolved_reloc = FALSE;
2563 break;
2564
2565 case R_390_8:
2566 case R_390_16:
2567 case R_390_32:
2568 case R_390_PC16:
2569 case R_390_PC16DBL:
2570 case R_390_PC32DBL:
2571 case R_390_PC32:
2572 if ((input_section->flags & SEC_ALLOC) == 0)
2573 break;
2574
2575 if ((info->shared
2576 && (h == NULL
2577 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2578 || h->root.type != bfd_link_hash_undefweak)
2579 && ((r_type != R_390_PC16
2580 && r_type != R_390_PC16DBL
2581 && r_type != R_390_PC32DBL
2582 && r_type != R_390_PC32)
2583 || (h != NULL
2584 && !SYMBOL_REFERENCES_LOCAL (info, h))))
2585 || (ELIMINATE_COPY_RELOCS
2586 && !info->shared
2587 && h != NULL
2588 && h->dynindx != -1
2589 && !h->non_got_ref
2590 && ((h->def_dynamic
2591 && !h->def_regular)
2592 || h->root.type == bfd_link_hash_undefweak
2593 || h->root.type == bfd_link_hash_undefined)))
2594 {
2595 Elf_Internal_Rela outrel;
2596 bfd_boolean skip, relocate;
2597 asection *sreloc;
2598 bfd_byte *loc;
2599
2600 /* When generating a shared object, these relocations
2601 are copied into the output file to be resolved at run
2602 time. */
2603
2604 skip = FALSE;
2605 relocate = FALSE;
2606
2607 outrel.r_offset =
2608 _bfd_elf_section_offset (output_bfd, info, input_section,
2609 rel->r_offset);
2610 if (outrel.r_offset == (bfd_vma) -1)
2611 skip = TRUE;
2612 else if (outrel.r_offset == (bfd_vma) -2)
2613 skip = TRUE, relocate = TRUE;
2614 outrel.r_offset += (input_section->output_section->vma
2615 + input_section->output_offset);
2616
2617 if (skip)
2618 memset (&outrel, 0, sizeof outrel);
2619 else if (h != NULL
2620 && h->dynindx != -1
2621 && (r_type == R_390_PC16
2622 || r_type == R_390_PC16DBL
2623 || r_type == R_390_PC32DBL
2624 || r_type == R_390_PC32
2625 || !info->shared
2626 || !info->symbolic
2627 || !h->def_regular))
2628 {
2629 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2630 outrel.r_addend = rel->r_addend;
2631 }
2632 else
2633 {
2634 /* This symbol is local, or marked to become local. */
2635 outrel.r_addend = relocation + rel->r_addend;
2636 if (r_type == R_390_32)
2637 {
2638 relocate = TRUE;
2639 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2640 }
2641 else
2642 {
2643 long sindx;
2644
2645 if (bfd_is_abs_section (sec))
2646 sindx = 0;
2647 else if (sec == NULL || sec->owner == NULL)
2648 {
2649 bfd_set_error(bfd_error_bad_value);
2650 return FALSE;
2651 }
2652 else
2653 {
2654 asection *osec;
2655
2656 osec = sec->output_section;
2657 sindx = elf_section_data (osec)->dynindx;
2658 if (sindx == 0)
2659 {
2660 osec = htab->elf.text_index_section;
2661 sindx = elf_section_data (osec)->dynindx;
2662 }
2663 BFD_ASSERT (sindx != 0);
2664
2665 /* We are turning this relocation into one
2666 against a section symbol, so subtract out
2667 the output section's address but not the
2668 offset of the input section in the output
2669 section. */
2670 outrel.r_addend -= osec->vma;
2671 }
2672 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2673 }
2674 }
2675
2676 sreloc = elf_section_data (input_section)->sreloc;
2677 if (sreloc == NULL)
2678 abort ();
2679
2680 loc = sreloc->contents;
2681 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2682 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2683
2684 /* If this reloc is against an external symbol, we do
2685 not want to fiddle with the addend. Otherwise, we
2686 need to include the symbol value so that it becomes
2687 an addend for the dynamic reloc. */
2688 if (! relocate)
2689 continue;
2690 }
2691 break;
2692
2693 /* Relocations for tls literal pool entries. */
2694 case R_390_TLS_IE32:
2695 if (info->shared)
2696 {
2697 Elf_Internal_Rela outrel;
2698 asection *sreloc;
2699 bfd_byte *loc;
2700
2701 outrel.r_offset = rel->r_offset
2702 + input_section->output_section->vma
2703 + input_section->output_offset;
2704 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2705 sreloc = elf_section_data (input_section)->sreloc;
2706 if (sreloc == NULL)
2707 abort ();
2708 loc = sreloc->contents;
2709 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2710 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2711 }
2712 /* Fall through. */
2713
2714 case R_390_TLS_GD32:
2715 case R_390_TLS_GOTIE32:
2716 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2717 tls_type = GOT_UNKNOWN;
2718 if (h == NULL && local_got_offsets)
2719 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2720 else if (h != NULL)
2721 {
2722 tls_type = elf_s390_hash_entry(h)->tls_type;
2723 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2724 r_type = R_390_TLS_LE32;
2725 }
2726 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2727 r_type = R_390_TLS_IE32;
2728
2729 if (r_type == R_390_TLS_LE32)
2730 {
2731 /* This relocation gets optimized away by the local exec
2732 access optimization. */
2733 BFD_ASSERT (! unresolved_reloc);
2734 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2735 contents + rel->r_offset);
2736 continue;
2737 }
2738
2739 if (htab->sgot == NULL)
2740 abort ();
2741
2742 if (h != NULL)
2743 off = h->got.offset;
2744 else
2745 {
2746 if (local_got_offsets == NULL)
2747 abort ();
2748
2749 off = local_got_offsets[r_symndx];
2750 }
2751
2752 emit_tls_relocs:
2753
2754 if ((off & 1) != 0)
2755 off &= ~1;
2756 else
2757 {
2758 Elf_Internal_Rela outrel;
2759 bfd_byte *loc;
2760 int dr_type, indx;
2761
2762 if (htab->srelgot == NULL)
2763 abort ();
2764
2765 outrel.r_offset = (htab->sgot->output_section->vma
2766 + htab->sgot->output_offset + off);
2767
2768 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2769 if (r_type == R_390_TLS_GD32)
2770 dr_type = R_390_TLS_DTPMOD;
2771 else
2772 dr_type = R_390_TLS_TPOFF;
2773 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2774 outrel.r_addend = relocation - dtpoff_base (info);
2775 else
2776 outrel.r_addend = 0;
2777 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2778 loc = htab->srelgot->contents;
2779 loc += htab->srelgot->reloc_count++
2780 * sizeof (Elf32_External_Rela);
2781 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2782
2783 if (r_type == R_390_TLS_GD32)
2784 {
2785 if (indx == 0)
2786 {
2787 BFD_ASSERT (! unresolved_reloc);
2788 bfd_put_32 (output_bfd,
2789 relocation - dtpoff_base (info),
2790 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2791 }
2792 else
2793 {
2794 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2795 outrel.r_offset += GOT_ENTRY_SIZE;
2796 outrel.r_addend = 0;
2797 htab->srelgot->reloc_count++;
2798 loc += sizeof (Elf32_External_Rela);
2799 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2800 }
2801 }
2802
2803 if (h != NULL)
2804 h->got.offset |= 1;
2805 else
2806 local_got_offsets[r_symndx] |= 1;
2807 }
2808
2809 if (off >= (bfd_vma) -2)
2810 abort ();
2811 if (r_type == ELF32_R_TYPE (rel->r_info))
2812 {
2813 relocation = htab->sgot->output_offset + off;
2814 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2815 relocation += htab->sgot->output_section->vma;
2816 unresolved_reloc = FALSE;
2817 }
2818 else
2819 {
2820 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2821 contents + rel->r_offset);
2822 continue;
2823 }
2824 break;
2825
2826 case R_390_TLS_GOTIE12:
2827 case R_390_TLS_GOTIE20:
2828 case R_390_TLS_IEENT:
2829 if (h == NULL)
2830 {
2831 if (local_got_offsets == NULL)
2832 abort();
2833 off = local_got_offsets[r_symndx];
2834 if (info->shared)
2835 goto emit_tls_relocs;
2836 }
2837 else
2838 {
2839 off = h->got.offset;
2840 tls_type = elf_s390_hash_entry(h)->tls_type;
2841 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2842 goto emit_tls_relocs;
2843 }
2844
2845 if (htab->sgot == NULL)
2846 abort ();
2847
2848 BFD_ASSERT (! unresolved_reloc);
2849 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2850 htab->sgot->contents + off);
2851 relocation = htab->sgot->output_offset + off;
2852 if (r_type == R_390_TLS_IEENT)
2853 relocation += htab->sgot->output_section->vma;
2854 unresolved_reloc = FALSE;
2855 break;
2856
2857 case R_390_TLS_LDM32:
2858 if (! info->shared)
2859 /* The literal pool entry this relocation refers to gets ignored
2860 by the optimized code of the local exec model. Do nothing
2861 and the value will turn out zero. */
2862 continue;
2863
2864 if (htab->sgot == NULL)
2865 abort ();
2866
2867 off = htab->tls_ldm_got.offset;
2868 if (off & 1)
2869 off &= ~1;
2870 else
2871 {
2872 Elf_Internal_Rela outrel;
2873 bfd_byte *loc;
2874
2875 if (htab->srelgot == NULL)
2876 abort ();
2877
2878 outrel.r_offset = (htab->sgot->output_section->vma
2879 + htab->sgot->output_offset + off);
2880
2881 bfd_put_32 (output_bfd, 0,
2882 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2883 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2884 outrel.r_addend = 0;
2885 loc = htab->srelgot->contents;
2886 loc += htab->srelgot->reloc_count++
2887 * sizeof (Elf32_External_Rela);
2888 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2889 htab->tls_ldm_got.offset |= 1;
2890 }
2891 relocation = htab->sgot->output_offset + off;
2892 unresolved_reloc = FALSE;
2893 break;
2894
2895 case R_390_TLS_LE32:
2896 if (info->shared)
2897 {
2898 /* Linking a shared library with non-fpic code requires
2899 a R_390_TLS_TPOFF relocation. */
2900 Elf_Internal_Rela outrel;
2901 asection *sreloc;
2902 bfd_byte *loc;
2903 int indx;
2904
2905 outrel.r_offset = rel->r_offset
2906 + input_section->output_section->vma
2907 + input_section->output_offset;
2908 if (h != NULL && h->dynindx != -1)
2909 indx = h->dynindx;
2910 else
2911 indx = 0;
2912 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2913 if (indx == 0)
2914 outrel.r_addend = relocation - dtpoff_base (info);
2915 else
2916 outrel.r_addend = 0;
2917 sreloc = elf_section_data (input_section)->sreloc;
2918 if (sreloc == NULL)
2919 abort ();
2920 loc = sreloc->contents;
2921 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2923 }
2924 else
2925 {
2926 BFD_ASSERT (! unresolved_reloc);
2927 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2928 contents + rel->r_offset);
2929 }
2930 continue;
2931
2932 case R_390_TLS_LDO32:
2933 if (info->shared)
2934 relocation -= dtpoff_base (info);
2935 else
2936 /* When converting LDO to LE, we must negate. */
2937 relocation = -tpoff (info, relocation);
2938 break;
2939
2940 /* Relocations for tls instructions. */
2941 case R_390_TLS_LOAD:
2942 case R_390_TLS_GDCALL:
2943 case R_390_TLS_LDCALL:
2944 tls_type = GOT_UNKNOWN;
2945 if (h == NULL && local_got_offsets)
2946 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2947 else if (h != NULL)
2948 tls_type = elf_s390_hash_entry(h)->tls_type;
2949
2950 if (tls_type == GOT_TLS_GD)
2951 continue;
2952
2953 if (r_type == R_390_TLS_LOAD)
2954 {
2955 if (!info->shared && (h == NULL || h->dynindx == -1))
2956 {
2957 /* IE->LE transition. Four valid cases:
2958 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2959 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2960 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2961 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2962 unsigned int insn, ry;
2963
2964 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2965 ry = 0;
2966 if ((insn & 0xff00f000) == 0x58000000)
2967 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2968 ry = (insn & 0x000f0000);
2969 else if ((insn & 0xff0f0000) == 0x58000000)
2970 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2971 ry = (insn & 0x0000f000) << 4;
2972 else if ((insn & 0xff00f000) == 0x5800c000)
2973 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2974 ry = (insn & 0x000f0000);
2975 else if ((insn & 0xff0f0000) == 0x580c0000)
2976 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2977 ry = (insn & 0x0000f000) << 4;
2978 else
2979 invalid_tls_insn (input_bfd, input_section, rel);
2980 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2981 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2982 }
2983 }
2984 else if (r_type == R_390_TLS_GDCALL)
2985 {
2986 unsigned int insn;
2987
2988 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2989 if ((insn & 0xff000fff) != 0x4d000000 &&
2990 (insn & 0xffff0000) != 0xc0e50000)
2991 invalid_tls_insn (input_bfd, input_section, rel);
2992 if (!info->shared && (h == NULL || h->dynindx == -1))
2993 {
2994 if ((insn & 0xff000000) == 0x4d000000)
2995 {
2996 /* GD->LE transition.
2997 bas %r14,0(%rx,%r13) -> bc 0,0 */
2998 insn = 0x47000000;
2999 }
3000 else
3001 {
3002 /* GD->LE transition.
3003 brasl %r14,_tls_get_addr@plt -> brcl 0,. */
3004 insn = 0xc0040000;
3005 bfd_put_16 (output_bfd, 0x0000,
3006 contents + rel->r_offset + 4);
3007 }
3008 }
3009 else
3010 {
3011 if ((insn & 0xff000000) == 0x4d000000)
3012 {
3013 /* GD->IE transition.
3014 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3015 insn = 0x5822c000;
3016 }
3017 else
3018 {
3019 /* GD->IE transition.
3020 brasl %r14,__tls_get_addr@plt ->
3021 l %r2,0(%r2,%r12) ; bcr 0,0 */
3022 insn = 0x5822c000;
3023 bfd_put_16 (output_bfd, 0x0700,
3024 contents + rel->r_offset + 4);
3025 }
3026 }
3027 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3028 }
3029 else if (r_type == R_390_TLS_LDCALL)
3030 {
3031 if (!info->shared)
3032 {
3033 unsigned int insn;
3034
3035 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3036 if ((insn & 0xff000fff) != 0x4d000000 &&
3037 (insn & 0xffff0000) != 0xc0e50000)
3038 invalid_tls_insn (input_bfd, input_section, rel);
3039 if ((insn & 0xff000000) == 0x4d000000)
3040 {
3041 /* LD->LE transition.
3042 bas %r14,0(%rx,%r13) -> bc 0,0 */
3043 insn = 0x47000000;
3044 }
3045 else
3046 {
3047 /* LD->LE transition.
3048 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3049 insn = 0xc0040000;
3050 bfd_put_16 (output_bfd, 0x0000,
3051 contents + rel->r_offset + 4);
3052 }
3053 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3054 }
3055 }
3056 continue;
3057
3058 default:
3059 break;
3060 }
3061
3062 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3063 because such sections are not SEC_ALLOC and thus ld.so will
3064 not process them. */
3065 if (unresolved_reloc
3066 && !((input_section->flags & SEC_DEBUGGING) != 0
3067 && h->def_dynamic))
3068 (*_bfd_error_handler)
3069 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3070 input_bfd,
3071 input_section,
3072 (long) rel->r_offset,
3073 howto->name,
3074 h->root.root.string);
3075
3076 if (r_type == R_390_20
3077 || r_type == R_390_GOT20
3078 || r_type == R_390_GOTPLT20
3079 || r_type == R_390_TLS_GOTIE20)
3080 {
3081 relocation += rel->r_addend;
3082 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3083 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3084 contents, rel->r_offset,
3085 relocation, 0);
3086 }
3087 else
3088 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3089 contents, rel->r_offset,
3090 relocation, rel->r_addend);
3091
3092 if (r != bfd_reloc_ok)
3093 {
3094 const char *name;
3095
3096 if (h != NULL)
3097 name = h->root.root.string;
3098 else
3099 {
3100 name = bfd_elf_string_from_elf_section (input_bfd,
3101 symtab_hdr->sh_link,
3102 sym->st_name);
3103 if (name == NULL)
3104 return FALSE;
3105 if (*name == '\0')
3106 name = bfd_section_name (input_bfd, sec);
3107 }
3108
3109 if (r == bfd_reloc_overflow)
3110 {
3111
3112 if (! ((*info->callbacks->reloc_overflow)
3113 (info, (h ? &h->root : NULL), name, howto->name,
3114 (bfd_vma) 0, input_bfd, input_section,
3115 rel->r_offset)))
3116 return FALSE;
3117 }
3118 else
3119 {
3120 (*_bfd_error_handler)
3121 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3122 input_bfd, input_section,
3123 (long) rel->r_offset, name, (int) r);
3124 return FALSE;
3125 }
3126 }
3127 }
3128
3129 return TRUE;
3130 }
3131
3132 /* Finish up dynamic symbol handling. We set the contents of various
3133 dynamic sections here. */
3134
3135 static bfd_boolean
3136 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3137 bfd *output_bfd;
3138 struct bfd_link_info *info;
3139 struct elf_link_hash_entry *h;
3140 Elf_Internal_Sym *sym;
3141 {
3142 struct elf_s390_link_hash_table *htab;
3143
3144 htab = elf_s390_hash_table (info);
3145
3146 if (h->plt.offset != (bfd_vma) -1)
3147 {
3148 bfd_vma plt_index;
3149 bfd_vma got_offset;
3150 Elf_Internal_Rela rela;
3151 bfd_byte *loc;
3152 bfd_vma relative_offset;
3153
3154 /* This symbol has an entry in the procedure linkage table. Set
3155 it up. */
3156 if (h->dynindx == -1
3157 || htab->splt == NULL
3158 || htab->sgotplt == NULL
3159 || htab->srelplt == NULL)
3160 abort ();
3161
3162 /* Calc. index no.
3163 Current offset - size first entry / entry size. */
3164 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3165
3166 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3167 addr & GOT addr. */
3168 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3169
3170 /* S390 uses halfwords for relative branch calc! */
3171 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3172 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3173 /* If offset is > 32768, branch to a previous branch
3174 390 can only handle +-64 K jumps. */
3175 if ( -32768 > (int) relative_offset )
3176 relative_offset
3177 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3178
3179 /* Fill in the entry in the procedure linkage table. */
3180 if (!info->shared)
3181 {
3182 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3183 htab->splt->contents + h->plt.offset);
3184 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3185 htab->splt->contents + h->plt.offset + 4);
3186 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3187 htab->splt->contents + h->plt.offset + 8);
3188 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3189 htab->splt->contents + h->plt.offset + 12);
3190 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3191 htab->splt->contents + h->plt.offset + 16);
3192 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3193 htab->splt->contents + h->plt.offset + 20);
3194 bfd_put_32 (output_bfd,
3195 (htab->sgotplt->output_section->vma
3196 + htab->sgotplt->output_offset
3197 + got_offset),
3198 htab->splt->contents + h->plt.offset + 24);
3199 }
3200 else if (got_offset < 4096)
3201 {
3202 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3203 htab->splt->contents + h->plt.offset);
3204 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3205 htab->splt->contents + h->plt.offset + 4);
3206 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3207 htab->splt->contents + h->plt.offset + 8);
3208 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3209 htab->splt->contents + h->plt.offset + 12);
3210 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3211 htab->splt->contents + h->plt.offset + 16);
3212 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3213 htab->splt->contents + h->plt.offset + 20);
3214 bfd_put_32 (output_bfd, (bfd_vma) 0,
3215 htab->splt->contents + h->plt.offset + 24);
3216 }
3217 else if (got_offset < 32768)
3218 {
3219 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3220 htab->splt->contents + h->plt.offset);
3221 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3222 htab->splt->contents + h->plt.offset + 4);
3223 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3224 htab->splt->contents + h->plt.offset + 8);
3225 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3226 htab->splt->contents + h->plt.offset + 12);
3227 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3228 htab->splt->contents + h->plt.offset + 16);
3229 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3230 htab->splt->contents + h->plt.offset + 20);
3231 bfd_put_32 (output_bfd, (bfd_vma) 0,
3232 htab->splt->contents + h->plt.offset + 24);
3233 }
3234 else
3235 {
3236 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3237 htab->splt->contents + h->plt.offset);
3238 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3239 htab->splt->contents + h->plt.offset + 4);
3240 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3241 htab->splt->contents + h->plt.offset + 8);
3242 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3243 htab->splt->contents + h->plt.offset + 12);
3244 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3245 htab->splt->contents + h->plt.offset + 16);
3246 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3247 htab->splt->contents + h->plt.offset + 20);
3248 bfd_put_32 (output_bfd, got_offset,
3249 htab->splt->contents + h->plt.offset + 24);
3250 }
3251 /* Insert offset into reloc. table here. */
3252 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3253 htab->splt->contents + h->plt.offset + 28);
3254
3255 /* Fill in the entry in the global offset table.
3256 Points to instruction after GOT offset. */
3257 bfd_put_32 (output_bfd,
3258 (htab->splt->output_section->vma
3259 + htab->splt->output_offset
3260 + h->plt.offset
3261 + 12),
3262 htab->sgotplt->contents + got_offset);
3263
3264 /* Fill in the entry in the .rela.plt section. */
3265 rela.r_offset = (htab->sgotplt->output_section->vma
3266 + htab->sgotplt->output_offset
3267 + got_offset);
3268 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3269 rela.r_addend = 0;
3270 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3271 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3272
3273 if (!h->def_regular)
3274 {
3275 /* Mark the symbol as undefined, rather than as defined in
3276 the .plt section. Leave the value alone. This is a clue
3277 for the dynamic linker, to make function pointer
3278 comparisons work between an application and shared
3279 library. */
3280 sym->st_shndx = SHN_UNDEF;
3281 }
3282 }
3283
3284 if (h->got.offset != (bfd_vma) -1
3285 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3286 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3287 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3288 {
3289 Elf_Internal_Rela rela;
3290 bfd_byte *loc;
3291
3292 /* This symbol has an entry in the global offset table. Set it
3293 up. */
3294
3295 if (htab->sgot == NULL || htab->srelgot == NULL)
3296 abort ();
3297
3298 rela.r_offset = (htab->sgot->output_section->vma
3299 + htab->sgot->output_offset
3300 + (h->got.offset &~ (bfd_vma) 1));
3301
3302 /* If this is a static link, or it is a -Bsymbolic link and the
3303 symbol is defined locally or was forced to be local because
3304 of a version file, we just want to emit a RELATIVE reloc.
3305 The entry in the global offset table will already have been
3306 initialized in the relocate_section function. */
3307 if (info->shared
3308 && (info->symbolic
3309 || h->dynindx == -1
3310 || h->forced_local)
3311 && h->def_regular)
3312 {
3313 BFD_ASSERT((h->got.offset & 1) != 0);
3314 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3315 rela.r_addend = (h->root.u.def.value
3316 + h->root.u.def.section->output_section->vma
3317 + h->root.u.def.section->output_offset);
3318 }
3319 else
3320 {
3321 BFD_ASSERT((h->got.offset & 1) == 0);
3322 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3323 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3324 rela.r_addend = 0;
3325 }
3326
3327 loc = htab->srelgot->contents;
3328 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3329 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3330 }
3331
3332 if (h->needs_copy)
3333 {
3334 Elf_Internal_Rela rela;
3335 bfd_byte *loc;
3336
3337 /* This symbols needs a copy reloc. Set it up. */
3338
3339 if (h->dynindx == -1
3340 || (h->root.type != bfd_link_hash_defined
3341 && h->root.type != bfd_link_hash_defweak)
3342 || htab->srelbss == NULL)
3343 abort ();
3344
3345 rela.r_offset = (h->root.u.def.value
3346 + h->root.u.def.section->output_section->vma
3347 + h->root.u.def.section->output_offset);
3348 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3349 rela.r_addend = 0;
3350 loc = htab->srelbss->contents;
3351 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3352 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3353 }
3354
3355 /* Mark some specially defined symbols as absolute. */
3356 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3357 || h == htab->elf.hgot
3358 || h == htab->elf.hplt)
3359 sym->st_shndx = SHN_ABS;
3360
3361 return TRUE;
3362 }
3363
3364 /* Used to decide how to sort relocs in an optimal manner for the
3365 dynamic linker, before writing them out. */
3366
3367 static enum elf_reloc_type_class
3368 elf_s390_reloc_type_class (rela)
3369 const Elf_Internal_Rela *rela;
3370 {
3371 switch ((int) ELF32_R_TYPE (rela->r_info))
3372 {
3373 case R_390_RELATIVE:
3374 return reloc_class_relative;
3375 case R_390_JMP_SLOT:
3376 return reloc_class_plt;
3377 case R_390_COPY:
3378 return reloc_class_copy;
3379 default:
3380 return reloc_class_normal;
3381 }
3382 }
3383
3384 /* Finish up the dynamic sections. */
3385
3386 static bfd_boolean
3387 elf_s390_finish_dynamic_sections (output_bfd, info)
3388 bfd *output_bfd;
3389 struct bfd_link_info *info;
3390 {
3391 struct elf_s390_link_hash_table *htab;
3392 bfd *dynobj;
3393 asection *sdyn;
3394
3395 htab = elf_s390_hash_table (info);
3396 dynobj = htab->elf.dynobj;
3397 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3398
3399 if (htab->elf.dynamic_sections_created)
3400 {
3401 Elf32_External_Dyn *dyncon, *dynconend;
3402
3403 if (sdyn == NULL || htab->sgot == NULL)
3404 abort ();
3405
3406 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3407 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3408 for (; dyncon < dynconend; dyncon++)
3409 {
3410 Elf_Internal_Dyn dyn;
3411 asection *s;
3412
3413 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3414
3415 switch (dyn.d_tag)
3416 {
3417 default:
3418 continue;
3419
3420 case DT_PLTGOT:
3421 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3422 break;
3423
3424 case DT_JMPREL:
3425 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3426 break;
3427
3428 case DT_PLTRELSZ:
3429 s = htab->srelplt->output_section;
3430 dyn.d_un.d_val = s->size;
3431 break;
3432 }
3433
3434 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3435 }
3436
3437 /* Fill in the special first entry in the procedure linkage table. */
3438 if (htab->splt && htab->splt->size > 0)
3439 {
3440 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3441 if (info->shared)
3442 {
3443 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3444 htab->splt->contents );
3445 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3446 htab->splt->contents +4 );
3447 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3448 htab->splt->contents +8 );
3449 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3450 htab->splt->contents +12 );
3451 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3452 htab->splt->contents +16 );
3453 }
3454 else
3455 {
3456 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3457 htab->splt->contents );
3458 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3459 htab->splt->contents +4 );
3460 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3461 htab->splt->contents +8 );
3462 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3463 htab->splt->contents +12 );
3464 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3465 htab->splt->contents +16 );
3466 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3467 htab->splt->contents +20 );
3468 bfd_put_32 (output_bfd,
3469 htab->sgotplt->output_section->vma
3470 + htab->sgotplt->output_offset,
3471 htab->splt->contents + 24);
3472 }
3473 elf_section_data (htab->splt->output_section)
3474 ->this_hdr.sh_entsize = 4;
3475 }
3476
3477 }
3478
3479 if (htab->sgotplt)
3480 {
3481 /* Fill in the first three entries in the global offset table. */
3482 if (htab->sgotplt->size > 0)
3483 {
3484 bfd_put_32 (output_bfd,
3485 (sdyn == NULL ? (bfd_vma) 0
3486 : sdyn->output_section->vma + sdyn->output_offset),
3487 htab->sgotplt->contents);
3488 /* One entry for shared object struct ptr. */
3489 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3490 /* One entry for _dl_runtime_resolve. */
3491 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3492 }
3493
3494 elf_section_data (htab->sgotplt->output_section)
3495 ->this_hdr.sh_entsize = 4;
3496 }
3497 return TRUE;
3498 }
3499
3500 static bfd_boolean
3501 elf_s390_grok_prstatus (abfd, note)
3502 bfd * abfd;
3503 Elf_Internal_Note * note;
3504 {
3505 int offset;
3506 unsigned int size;
3507
3508 switch (note->descsz)
3509 {
3510 default:
3511 return FALSE;
3512
3513 case 224: /* S/390 Linux. */
3514 /* pr_cursig */
3515 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3516
3517 /* pr_pid */
3518 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3519
3520 /* pr_reg */
3521 offset = 72;
3522 size = 144;
3523 break;
3524 }
3525
3526 /* Make a ".reg/999" section. */
3527 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3528 size, note->descpos + offset);
3529 }
3530
3531 /* Return address for Ith PLT stub in section PLT, for relocation REL
3532 or (bfd_vma) -1 if it should not be included. */
3533
3534 static bfd_vma
3535 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3536 const arelent *rel ATTRIBUTE_UNUSED)
3537 {
3538 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3539 }
3540
3541
3542 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3543 #define TARGET_BIG_NAME "elf32-s390"
3544 #define ELF_ARCH bfd_arch_s390
3545 #define ELF_MACHINE_CODE EM_S390
3546 #define ELF_MACHINE_ALT1 EM_S390_OLD
3547 #define ELF_MAXPAGESIZE 0x1000
3548
3549 #define elf_backend_can_gc_sections 1
3550 #define elf_backend_can_refcount 1
3551 #define elf_backend_want_got_plt 1
3552 #define elf_backend_plt_readonly 1
3553 #define elf_backend_want_plt_sym 0
3554 #define elf_backend_got_header_size 12
3555 #define elf_backend_rela_normal 1
3556
3557 #define elf_info_to_howto elf_s390_info_to_howto
3558
3559 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3560 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3561 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3562 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3563
3564 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3565 #define elf_backend_check_relocs elf_s390_check_relocs
3566 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3567 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3568 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3569 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3570 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3571 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3572 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3573 #define elf_backend_relocate_section elf_s390_relocate_section
3574 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3575 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3576 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3577 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3578 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3579
3580 #define bfd_elf32_mkobject elf_s390_mkobject
3581 #define elf_backend_object_p elf_s390_object_p
3582
3583 #include "elf32-target.h"
git-cvsimport of binutils cvsroot