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[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA. */
21
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27
28 static reloc_howto_type *elf_s390_reloc_type_lookup
29 PARAMS ((bfd *, bfd_reloc_code_real_type));
30 static void elf_s390_info_to_howto
31 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
32 static bfd_boolean elf_s390_is_local_label_name
33 PARAMS ((bfd *, const char *));
34 static struct bfd_hash_entry *link_hash_newfunc
35 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
36 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
37 PARAMS ((bfd *));
38 static bfd_boolean create_got_section
39 PARAMS((bfd *, struct bfd_link_info *));
40 static bfd_boolean elf_s390_create_dynamic_sections
41 PARAMS((bfd *, struct bfd_link_info *));
42 static void elf_s390_copy_indirect_symbol
43 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
44 struct elf_link_hash_entry *));
45 static bfd_boolean elf_s390_check_relocs
46 PARAMS ((bfd *, struct bfd_link_info *, asection *,
47 const Elf_Internal_Rela *));
48 static asection *elf_s390_gc_mark_hook
49 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
50 struct elf_link_hash_entry *, Elf_Internal_Sym *));
51 static bfd_boolean elf_s390_gc_sweep_hook
52 PARAMS ((bfd *, struct bfd_link_info *, asection *,
53 const Elf_Internal_Rela *));
54 struct elf_s390_link_hash_entry;
55 static void elf_s390_adjust_gotplt
56 PARAMS ((struct elf_s390_link_hash_entry *));
57 static bfd_boolean elf_s390_adjust_dynamic_symbol
58 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
59 static bfd_boolean allocate_dynrelocs
60 PARAMS ((struct elf_link_hash_entry *, PTR));
61 static bfd_boolean readonly_dynrelocs
62 PARAMS ((struct elf_link_hash_entry *, PTR));
63 static bfd_boolean elf_s390_size_dynamic_sections
64 PARAMS ((bfd *, struct bfd_link_info *));
65 static bfd_boolean elf_s390_relocate_section
66 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
67 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
68 static bfd_boolean elf_s390_finish_dynamic_symbol
69 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
70 Elf_Internal_Sym *));
71 static enum elf_reloc_type_class elf_s390_reloc_type_class
72 PARAMS ((const Elf_Internal_Rela *));
73 static bfd_boolean elf_s390_finish_dynamic_sections
74 PARAMS ((bfd *, struct bfd_link_info *));
75 static bfd_boolean elf_s390_mkobject
76 PARAMS ((bfd *));
77 static bfd_boolean elf_s390_object_p
78 PARAMS ((bfd *));
79 static bfd_boolean elf_s390_grok_prstatus
80 PARAMS ((bfd *, Elf_Internal_Note *));
81 static int elf_s390_tls_transition
82 PARAMS ((struct bfd_link_info *, int, int));
83 static bfd_reloc_status_type s390_tls_reloc
84 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
85 static bfd_vma dtpoff_base
86 PARAMS ((struct bfd_link_info *));
87 static bfd_vma tpoff
88 PARAMS ((struct bfd_link_info *, bfd_vma));
89 static void invalid_tls_insn
90 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
91 static bfd_reloc_status_type s390_elf_ldisp_reloc
92 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
93
94 #include "elf/s390.h"
95
96 /* The relocation "howto" table. */
97
98 static reloc_howto_type elf_howto_table[] =
99 {
100 HOWTO (R_390_NONE, /* type */
101 0, /* rightshift */
102 0, /* size (0 = byte, 1 = short, 2 = long) */
103 0, /* bitsize */
104 FALSE, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_dont, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_390_NONE", /* name */
109 FALSE, /* partial_inplace */
110 0, /* src_mask */
111 0, /* dst_mask */
112 FALSE), /* pcrel_offset */
113
114 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
115 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
116 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
117 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
118 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
120 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
122 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
124 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
126 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
128 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
130 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
132 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
133 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
134 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
136 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
138 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
140 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
142 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
144 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
146 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
148 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
150 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
152 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
154 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
155 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
156 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
157 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
158 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
159 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
160 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
162 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
164 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
165 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
166 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
167 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
171 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
172 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
174 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
175 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
176 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
177 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
178 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
179 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
180 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
181 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
182 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
183 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
184 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
185 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
186 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
187 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
188 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
189 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
190 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
191 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
192 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
193 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
194 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
195 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
196 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
197 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
198 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
199 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
200 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
201 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
202 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
203 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
204 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
206 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
207 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
208 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
209 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
210 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
211 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
212 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
213 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
214 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
215 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
216 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
217 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
218 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
219 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
220 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
221 };
222
223 /* GNU extension to record C++ vtable hierarchy. */
224 static reloc_howto_type elf32_s390_vtinherit_howto =
225 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
226 static reloc_howto_type elf32_s390_vtentry_howto =
227 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);
228
229 static reloc_howto_type *
230 elf_s390_reloc_type_lookup (abfd, code)
231 bfd *abfd ATTRIBUTE_UNUSED;
232 bfd_reloc_code_real_type code;
233 {
234 switch (code)
235 {
236 case BFD_RELOC_NONE:
237 return &elf_howto_table[(int) R_390_NONE];
238 case BFD_RELOC_8:
239 return &elf_howto_table[(int) R_390_8];
240 case BFD_RELOC_390_12:
241 return &elf_howto_table[(int) R_390_12];
242 case BFD_RELOC_16:
243 return &elf_howto_table[(int) R_390_16];
244 case BFD_RELOC_32:
245 return &elf_howto_table[(int) R_390_32];
246 case BFD_RELOC_CTOR:
247 return &elf_howto_table[(int) R_390_32];
248 case BFD_RELOC_32_PCREL:
249 return &elf_howto_table[(int) R_390_PC32];
250 case BFD_RELOC_390_GOT12:
251 return &elf_howto_table[(int) R_390_GOT12];
252 case BFD_RELOC_32_GOT_PCREL:
253 return &elf_howto_table[(int) R_390_GOT32];
254 case BFD_RELOC_390_PLT32:
255 return &elf_howto_table[(int) R_390_PLT32];
256 case BFD_RELOC_390_COPY:
257 return &elf_howto_table[(int) R_390_COPY];
258 case BFD_RELOC_390_GLOB_DAT:
259 return &elf_howto_table[(int) R_390_GLOB_DAT];
260 case BFD_RELOC_390_JMP_SLOT:
261 return &elf_howto_table[(int) R_390_JMP_SLOT];
262 case BFD_RELOC_390_RELATIVE:
263 return &elf_howto_table[(int) R_390_RELATIVE];
264 case BFD_RELOC_32_GOTOFF:
265 return &elf_howto_table[(int) R_390_GOTOFF32];
266 case BFD_RELOC_390_GOTPC:
267 return &elf_howto_table[(int) R_390_GOTPC];
268 case BFD_RELOC_390_GOT16:
269 return &elf_howto_table[(int) R_390_GOT16];
270 case BFD_RELOC_16_PCREL:
271 return &elf_howto_table[(int) R_390_PC16];
272 case BFD_RELOC_390_PC16DBL:
273 return &elf_howto_table[(int) R_390_PC16DBL];
274 case BFD_RELOC_390_PLT16DBL:
275 return &elf_howto_table[(int) R_390_PLT16DBL];
276 case BFD_RELOC_390_PC32DBL:
277 return &elf_howto_table[(int) R_390_PC32DBL];
278 case BFD_RELOC_390_PLT32DBL:
279 return &elf_howto_table[(int) R_390_PLT32DBL];
280 case BFD_RELOC_390_GOTPCDBL:
281 return &elf_howto_table[(int) R_390_GOTPCDBL];
282 case BFD_RELOC_390_GOTENT:
283 return &elf_howto_table[(int) R_390_GOTENT];
284 case BFD_RELOC_16_GOTOFF:
285 return &elf_howto_table[(int) R_390_GOTOFF16];
286 case BFD_RELOC_390_GOTPLT12:
287 return &elf_howto_table[(int) R_390_GOTPLT12];
288 case BFD_RELOC_390_GOTPLT16:
289 return &elf_howto_table[(int) R_390_GOTPLT16];
290 case BFD_RELOC_390_GOTPLT32:
291 return &elf_howto_table[(int) R_390_GOTPLT32];
292 case BFD_RELOC_390_GOTPLTENT:
293 return &elf_howto_table[(int) R_390_GOTPLTENT];
294 case BFD_RELOC_390_PLTOFF16:
295 return &elf_howto_table[(int) R_390_PLTOFF16];
296 case BFD_RELOC_390_PLTOFF32:
297 return &elf_howto_table[(int) R_390_PLTOFF32];
298 case BFD_RELOC_390_TLS_LOAD:
299 return &elf_howto_table[(int) R_390_TLS_LOAD];
300 case BFD_RELOC_390_TLS_GDCALL:
301 return &elf_howto_table[(int) R_390_TLS_GDCALL];
302 case BFD_RELOC_390_TLS_LDCALL:
303 return &elf_howto_table[(int) R_390_TLS_LDCALL];
304 case BFD_RELOC_390_TLS_GD32:
305 return &elf_howto_table[(int) R_390_TLS_GD32];
306 case BFD_RELOC_390_TLS_GOTIE12:
307 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
308 case BFD_RELOC_390_TLS_GOTIE32:
309 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
310 case BFD_RELOC_390_TLS_LDM32:
311 return &elf_howto_table[(int) R_390_TLS_LDM32];
312 case BFD_RELOC_390_TLS_IE32:
313 return &elf_howto_table[(int) R_390_TLS_IE32];
314 case BFD_RELOC_390_TLS_IEENT:
315 return &elf_howto_table[(int) R_390_TLS_IEENT];
316 case BFD_RELOC_390_TLS_LE32:
317 return &elf_howto_table[(int) R_390_TLS_LE32];
318 case BFD_RELOC_390_TLS_LDO32:
319 return &elf_howto_table[(int) R_390_TLS_LDO32];
320 case BFD_RELOC_390_TLS_DTPMOD:
321 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
322 case BFD_RELOC_390_TLS_DTPOFF:
323 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
324 case BFD_RELOC_390_TLS_TPOFF:
325 return &elf_howto_table[(int) R_390_TLS_TPOFF];
326 case BFD_RELOC_390_20:
327 return &elf_howto_table[(int) R_390_20];
328 case BFD_RELOC_390_GOT20:
329 return &elf_howto_table[(int) R_390_GOT20];
330 case BFD_RELOC_390_GOTPLT20:
331 return &elf_howto_table[(int) R_390_GOTPLT20];
332 case BFD_RELOC_390_TLS_GOTIE20:
333 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
334 case BFD_RELOC_VTABLE_INHERIT:
335 return &elf32_s390_vtinherit_howto;
336 case BFD_RELOC_VTABLE_ENTRY:
337 return &elf32_s390_vtentry_howto;
338 default:
339 break;
340 }
341 return 0;
342 }
343
344 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
345 and elf32-s390.c has its own copy. */
346
347 static void
348 elf_s390_info_to_howto (abfd, cache_ptr, dst)
349 bfd *abfd ATTRIBUTE_UNUSED;
350 arelent *cache_ptr;
351 Elf_Internal_Rela *dst;
352 {
353 switch (ELF32_R_TYPE(dst->r_info))
354 {
355 case R_390_GNU_VTINHERIT:
356 cache_ptr->howto = &elf32_s390_vtinherit_howto;
357 break;
358
359 case R_390_GNU_VTENTRY:
360 cache_ptr->howto = &elf32_s390_vtentry_howto;
361 break;
362
363 default:
364 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_390_max);
365 cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)];
366 }
367 }
368
369 /* A relocation function which doesn't do anything. */
370 static bfd_reloc_status_type
371 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
372 output_bfd, error_message)
373 bfd *abfd ATTRIBUTE_UNUSED;
374 arelent *reloc_entry;
375 asymbol *symbol ATTRIBUTE_UNUSED;
376 PTR data ATTRIBUTE_UNUSED;
377 asection *input_section;
378 bfd *output_bfd;
379 char **error_message ATTRIBUTE_UNUSED;
380 {
381 if (output_bfd)
382 reloc_entry->address += input_section->output_offset;
383 return bfd_reloc_ok;
384 }
385
386 /* Handle the large displacement relocs. */
387 static bfd_reloc_status_type
388 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
389 output_bfd, error_message)
390 bfd *abfd ATTRIBUTE_UNUSED;
391 arelent *reloc_entry;
392 asymbol *symbol;
393 PTR data ATTRIBUTE_UNUSED;
394 asection *input_section;
395 bfd *output_bfd;
396 char **error_message ATTRIBUTE_UNUSED;
397 {
398 reloc_howto_type *howto = reloc_entry->howto;
399 bfd_vma relocation;
400 bfd_vma insn;
401
402 if (output_bfd != (bfd *) NULL
403 && (symbol->flags & BSF_SECTION_SYM) == 0
404 && (! howto->partial_inplace
405 || reloc_entry->addend == 0))
406 {
407 reloc_entry->address += input_section->output_offset;
408 return bfd_reloc_ok;
409 }
410
411 if (output_bfd != NULL)
412 return bfd_reloc_continue;
413
414 if (reloc_entry->address > input_section->_cooked_size)
415 return bfd_reloc_outofrange;
416
417 relocation = (symbol->value
418 + symbol->section->output_section->vma
419 + symbol->section->output_offset);
420 relocation += reloc_entry->addend;
421 if (howto->pc_relative)
422 {
423 relocation -= (input_section->output_section->vma
424 + input_section->output_offset);
425 relocation -= reloc_entry->address;
426 }
427
428 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
429 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
430 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
431
432 if ((bfd_signed_vma) relocation < - 0x80000
433 || (bfd_signed_vma) relocation > 0x7ffff)
434 return bfd_reloc_overflow;
435 else
436 return bfd_reloc_ok;
437 }
438
439 static bfd_boolean
440 elf_s390_is_local_label_name (abfd, name)
441 bfd *abfd;
442 const char *name;
443 {
444 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
445 return TRUE;
446
447 return _bfd_elf_is_local_label_name (abfd, name);
448 }
449
450 /* Functions for the 390 ELF linker. */
451
452 /* The name of the dynamic interpreter. This is put in the .interp
453 section. */
454
455 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
456
457 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
458 copying dynamic variables from a shared lib into an app's dynbss
459 section, and instead use a dynamic relocation to point into the
460 shared lib. */
461 #define ELIMINATE_COPY_RELOCS 1
462
463 /* The size in bytes of the first entry in the procedure linkage table. */
464 #define PLT_FIRST_ENTRY_SIZE 32
465 /* The size in bytes of an entry in the procedure linkage table. */
466 #define PLT_ENTRY_SIZE 32
467
468 #define GOT_ENTRY_SIZE 4
469
470 /* The first three entries in a procedure linkage table are reserved,
471 and the initial contents are unimportant (we zero them out).
472 Subsequent entries look like this. See the SVR4 ABI 386
473 supplement to see how this works. */
474
475 /* For the s390, simple addr offset can only be 0 - 4096.
476 To use the full 2 GB address space, several instructions
477 are needed to load an address in a register and execute
478 a branch( or just saving the address)
479
480 Furthermore, only r 0 and 1 are free to use!!! */
481
482 /* The first 3 words in the GOT are then reserved.
483 Word 0 is the address of the dynamic table.
484 Word 1 is a pointer to a structure describing the object
485 Word 2 is used to point to the loader entry address.
486
487 The code for position independent PLT entries looks like this:
488
489 r12 holds addr of the current GOT at entry to the PLT
490
491 The GOT holds the address in the PLT to be executed.
492 The loader then gets:
493 24(15) = Pointer to the structure describing the object.
494 28(15) = Offset in symbol table
495
496 The loader must then find the module where the function is
497 and insert the address in the GOT.
498
499 Note: 390 can only address +- 64 K relative.
500 We check if offset > 65536, then make a relative branch -64xxx
501 back to a previous defined branch
502
503 PLT1: BASR 1,0 # 2 bytes
504 L 1,22(1) # 4 bytes Load offset in GOT in r 1
505 L 1,(1,12) # 4 bytes Load address from GOT in r1
506 BCR 15,1 # 2 bytes Jump to address
507 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
508 L 1,14(1) # 4 bytes Load offset in symol table in r1
509 BRC 15,-x # 4 bytes Jump to start of PLT
510 .word 0 # 2 bytes filler
511 .long ? # 4 bytes offset in GOT
512 .long ? # 4 bytes offset into symbol table
513
514 This was the general case. There are two additional, optimizes PLT
515 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
516 First the one for GOT offsets < 4096:
517
518 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
519 BCR 15,1 # 2 bytes Jump to address
520 .word 0,0,0 # 6 bytes filler
521 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
522 L 1,14(1) # 4 bytes Load offset in symbol table in r1
523 BRC 15,-x # 4 bytes Jump to start of PLT
524 .word 0,0,0 # 6 bytes filler
525 .long ? # 4 bytes offset into symbol table
526
527 Second the one for GOT offsets < 32768:
528
529 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
530 L 1,(1,12) # 4 bytes Load address from GOT to r1
531 BCR 15,1 # 2 bytes Jump to address
532 .word 0 # 2 bytes filler
533 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
534 L 1,14(1) # 4 bytes Load offset in symbol table in r1
535 BRC 15,-x # 4 bytes Jump to start of PLT
536 .word 0,0,0 # 6 bytes filler
537 .long ? # 4 bytes offset into symbol table
538
539 Total = 32 bytes per PLT entry
540
541 The code for static build PLT entries looks like this:
542
543 PLT1: BASR 1,0 # 2 bytes
544 L 1,22(1) # 4 bytes Load address of GOT entry
545 L 1,0(0,1) # 4 bytes Load address from GOT in r1
546 BCR 15,1 # 2 bytes Jump to address
547 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
548 L 1,14(1) # 4 bytes Load offset in symbol table in r1
549 BRC 15,-x # 4 bytes Jump to start of PLT
550 .word 0 # 2 bytes filler
551 .long ? # 4 bytes address of GOT entry
552 .long ? # 4 bytes offset into symbol table */
553
554 #define PLT_PIC_ENTRY_WORD0 0x0d105810
555 #define PLT_PIC_ENTRY_WORD1 0x10165811
556 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
557 #define PLT_PIC_ENTRY_WORD3 0x0d105810
558 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
559
560 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
561 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
562 #define PLT_PIC12_ENTRY_WORD2 0x00000000
563 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
564 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
565
566 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
567 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
568 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
569 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
570 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
571
572 #define PLT_ENTRY_WORD0 0x0d105810
573 #define PLT_ENTRY_WORD1 0x10165810
574 #define PLT_ENTRY_WORD2 0x100007f1
575 #define PLT_ENTRY_WORD3 0x0d105810
576 #define PLT_ENTRY_WORD4 0x100ea7f4
577
578 /* The first PLT entry pushes the offset into the symbol table
579 from R1 onto the stack at 8(15) and the loader object info
580 at 12(15), loads the loader address in R1 and jumps to it. */
581
582 /* The first entry in the PLT for PIC code:
583
584 PLT0:
585 ST 1,28(15) # R1 has offset into symbol table
586 L 1,4(12) # Get loader ino(object struct address)
587 ST 1,24(15) # Store address
588 L 1,8(12) # Entry address of loader in R1
589 BR 1 # Jump to loader
590
591 The first entry in the PLT for static code:
592
593 PLT0:
594 ST 1,28(15) # R1 has offset into symbol table
595 BASR 1,0
596 L 1,18(0,1) # Get address of GOT
597 MVC 24(4,15),4(1) # Move loader ino to stack
598 L 1,8(1) # Get address of loader
599 BR 1 # Jump to loader
600 .word 0 # filler
601 .long got # address of GOT */
602
603 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
604 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
605 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
606 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
607 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
608
609 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
610 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
611 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
612 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
613 #define PLT_FIRST_ENTRY_WORD4 0x58101008
614 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
615
616 /* The s390 linker needs to keep track of the number of relocs that it
617 decides to copy as dynamic relocs in check_relocs for each symbol.
618 This is so that it can later discard them if they are found to be
619 unnecessary. We store the information in a field extending the
620 regular ELF linker hash table. */
621
622 struct elf_s390_dyn_relocs
623 {
624 struct elf_s390_dyn_relocs *next;
625
626 /* The input section of the reloc. */
627 asection *sec;
628
629 /* Total number of relocs copied for the input section. */
630 bfd_size_type count;
631
632 /* Number of pc-relative relocs copied for the input section. */
633 bfd_size_type pc_count;
634 };
635
636 /* s390 ELF linker hash entry. */
637
638 struct elf_s390_link_hash_entry
639 {
640 struct elf_link_hash_entry elf;
641
642 /* Track dynamic relocs copied for this symbol. */
643 struct elf_s390_dyn_relocs *dyn_relocs;
644
645 /* Number of GOTPLT references for a function. */
646 bfd_signed_vma gotplt_refcount;
647
648 #define GOT_UNKNOWN 0
649 #define GOT_NORMAL 1
650 #define GOT_TLS_GD 2
651 #define GOT_TLS_IE 3
652 #define GOT_TLS_IE_NLT 4
653 unsigned char tls_type;
654 };
655
656 #define elf_s390_hash_entry(ent) \
657 ((struct elf_s390_link_hash_entry *)(ent))
658
659 struct elf_s390_obj_tdata
660 {
661 struct elf_obj_tdata root;
662
663 /* tls_type for each local got entry. */
664 char *local_got_tls_type;
665 };
666
667 #define elf_s390_tdata(abfd) \
668 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
669
670 #define elf_s390_local_got_tls_type(abfd) \
671 (elf_s390_tdata (abfd)->local_got_tls_type)
672
673 static bfd_boolean
674 elf_s390_mkobject (abfd)
675 bfd *abfd;
676 {
677 bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
678 abfd->tdata.any = bfd_zalloc (abfd, amt);
679 if (abfd->tdata.any == NULL)
680 return FALSE;
681 return TRUE;
682 }
683
684 static bfd_boolean
685 elf_s390_object_p (abfd)
686 bfd *abfd;
687 {
688 /* Set the right machine number for an s390 elf32 file. */
689 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
690 }
691
692 /* s390 ELF linker hash table. */
693
694 struct elf_s390_link_hash_table
695 {
696 struct elf_link_hash_table elf;
697
698 /* Short-cuts to get to dynamic linker sections. */
699 asection *sgot;
700 asection *sgotplt;
701 asection *srelgot;
702 asection *splt;
703 asection *srelplt;
704 asection *sdynbss;
705 asection *srelbss;
706
707 union {
708 bfd_signed_vma refcount;
709 bfd_vma offset;
710 } tls_ldm_got;
711
712 /* Small local sym to section mapping cache. */
713 struct sym_sec_cache sym_sec;
714 };
715
716 /* Get the s390 ELF linker hash table from a link_info structure. */
717
718 #define elf_s390_hash_table(p) \
719 ((struct elf_s390_link_hash_table *) ((p)->hash))
720
721 /* Create an entry in an s390 ELF linker hash table. */
722
723 static struct bfd_hash_entry *
724 link_hash_newfunc (entry, table, string)
725 struct bfd_hash_entry *entry;
726 struct bfd_hash_table *table;
727 const char *string;
728 {
729 /* Allocate the structure if it has not already been allocated by a
730 subclass. */
731 if (entry == NULL)
732 {
733 entry = bfd_hash_allocate (table,
734 sizeof (struct elf_s390_link_hash_entry));
735 if (entry == NULL)
736 return entry;
737 }
738
739 /* Call the allocation method of the superclass. */
740 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
741 if (entry != NULL)
742 {
743 struct elf_s390_link_hash_entry *eh;
744
745 eh = (struct elf_s390_link_hash_entry *) entry;
746 eh->dyn_relocs = NULL;
747 eh->gotplt_refcount = 0;
748 eh->tls_type = GOT_UNKNOWN;
749 }
750
751 return entry;
752 }
753
754 /* Create an s390 ELF linker hash table. */
755
756 static struct bfd_link_hash_table *
757 elf_s390_link_hash_table_create (abfd)
758 bfd *abfd;
759 {
760 struct elf_s390_link_hash_table *ret;
761 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
762
763 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
764 if (ret == NULL)
765 return NULL;
766
767 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
768 {
769 free (ret);
770 return NULL;
771 }
772
773 ret->sgot = NULL;
774 ret->sgotplt = NULL;
775 ret->srelgot = NULL;
776 ret->splt = NULL;
777 ret->srelplt = NULL;
778 ret->sdynbss = NULL;
779 ret->srelbss = NULL;
780 ret->tls_ldm_got.refcount = 0;
781 ret->sym_sec.abfd = NULL;
782
783 return &ret->elf.root;
784 }
785
786 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
787 shortcuts to them in our hash table. */
788
789 static bfd_boolean
790 create_got_section (dynobj, info)
791 bfd *dynobj;
792 struct bfd_link_info *info;
793 {
794 struct elf_s390_link_hash_table *htab;
795
796 if (! _bfd_elf_create_got_section (dynobj, info))
797 return FALSE;
798
799 htab = elf_s390_hash_table (info);
800 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
801 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
802 if (!htab->sgot || !htab->sgotplt)
803 abort ();
804
805 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
806 if (htab->srelgot == NULL
807 || ! bfd_set_section_flags (dynobj, htab->srelgot,
808 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
809 | SEC_IN_MEMORY | SEC_LINKER_CREATED
810 | SEC_READONLY))
811 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
812 return FALSE;
813 return TRUE;
814 }
815
816 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
817 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
818 hash table. */
819
820 static bfd_boolean
821 elf_s390_create_dynamic_sections (dynobj, info)
822 bfd *dynobj;
823 struct bfd_link_info *info;
824 {
825 struct elf_s390_link_hash_table *htab;
826
827 htab = elf_s390_hash_table (info);
828 if (!htab->sgot && !create_got_section (dynobj, info))
829 return FALSE;
830
831 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
832 return FALSE;
833
834 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
835 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
836 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
837 if (!info->shared)
838 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
839
840 if (!htab->splt || !htab->srelplt || !htab->sdynbss
841 || (!info->shared && !htab->srelbss))
842 abort ();
843
844 return TRUE;
845 }
846
847 /* Copy the extra info we tack onto an elf_link_hash_entry. */
848
849 static void
850 elf_s390_copy_indirect_symbol (bed, dir, ind)
851 const struct elf_backend_data *bed;
852 struct elf_link_hash_entry *dir, *ind;
853 {
854 struct elf_s390_link_hash_entry *edir, *eind;
855
856 edir = (struct elf_s390_link_hash_entry *) dir;
857 eind = (struct elf_s390_link_hash_entry *) ind;
858
859 if (eind->dyn_relocs != NULL)
860 {
861 if (edir->dyn_relocs != NULL)
862 {
863 struct elf_s390_dyn_relocs **pp;
864 struct elf_s390_dyn_relocs *p;
865
866 if (ind->root.type == bfd_link_hash_indirect)
867 abort ();
868
869 /* Add reloc counts against the weak sym to the strong sym
870 list. Merge any entries against the same section. */
871 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
872 {
873 struct elf_s390_dyn_relocs *q;
874
875 for (q = edir->dyn_relocs; q != NULL; q = q->next)
876 if (q->sec == p->sec)
877 {
878 q->pc_count += p->pc_count;
879 q->count += p->count;
880 *pp = p->next;
881 break;
882 }
883 if (q == NULL)
884 pp = &p->next;
885 }
886 *pp = edir->dyn_relocs;
887 }
888
889 edir->dyn_relocs = eind->dyn_relocs;
890 eind->dyn_relocs = NULL;
891 }
892
893 if (ind->root.type == bfd_link_hash_indirect
894 && dir->got.refcount <= 0)
895 {
896 edir->tls_type = eind->tls_type;
897 eind->tls_type = GOT_UNKNOWN;
898 }
899
900 if (ELIMINATE_COPY_RELOCS
901 && ind->root.type != bfd_link_hash_indirect
902 && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
903 /* If called to transfer flags for a weakdef during processing
904 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
905 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
906 dir->elf_link_hash_flags |=
907 (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
908 | ELF_LINK_HASH_REF_REGULAR
909 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
910 | ELF_LINK_HASH_NEEDS_PLT));
911 else
912 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
913 }
914
915 static int
916 elf_s390_tls_transition (info, r_type, is_local)
917 struct bfd_link_info *info;
918 int r_type;
919 int is_local;
920 {
921 if (info->shared)
922 return r_type;
923
924 switch (r_type)
925 {
926 case R_390_TLS_GD32:
927 case R_390_TLS_IE32:
928 if (is_local)
929 return R_390_TLS_LE32;
930 return R_390_TLS_IE32;
931 case R_390_TLS_GOTIE32:
932 if (is_local)
933 return R_390_TLS_LE32;
934 return R_390_TLS_GOTIE32;
935 case R_390_TLS_LDM32:
936 return R_390_TLS_LE32;
937 }
938
939 return r_type;
940 }
941
942 /* Look through the relocs for a section during the first phase, and
943 allocate space in the global offset table or procedure linkage
944 table. */
945
946 static bfd_boolean
947 elf_s390_check_relocs (abfd, info, sec, relocs)
948 bfd *abfd;
949 struct bfd_link_info *info;
950 asection *sec;
951 const Elf_Internal_Rela *relocs;
952 {
953 struct elf_s390_link_hash_table *htab;
954 Elf_Internal_Shdr *symtab_hdr;
955 struct elf_link_hash_entry **sym_hashes;
956 const Elf_Internal_Rela *rel;
957 const Elf_Internal_Rela *rel_end;
958 asection *sreloc;
959 bfd_signed_vma *local_got_refcounts;
960 int tls_type, old_tls_type;
961
962 if (info->relocatable)
963 return TRUE;
964
965 htab = elf_s390_hash_table (info);
966 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
967 sym_hashes = elf_sym_hashes (abfd);
968 local_got_refcounts = elf_local_got_refcounts (abfd);
969
970 sreloc = NULL;
971
972 rel_end = relocs + sec->reloc_count;
973 for (rel = relocs; rel < rel_end; rel++)
974 {
975 unsigned int r_type;
976 unsigned long r_symndx;
977 struct elf_link_hash_entry *h;
978
979 r_symndx = ELF32_R_SYM (rel->r_info);
980
981 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
982 {
983 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
984 bfd_archive_filename (abfd),
985 r_symndx);
986 return FALSE;
987 }
988
989 if (r_symndx < symtab_hdr->sh_info)
990 h = NULL;
991 else
992 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
993
994 /* Create got section and local_got_refcounts array if they
995 are needed. */
996 r_type = elf_s390_tls_transition (info,
997 ELF32_R_TYPE (rel->r_info),
998 h == NULL);
999 switch (r_type)
1000 {
1001 case R_390_GOT12:
1002 case R_390_GOT16:
1003 case R_390_GOT20:
1004 case R_390_GOT32:
1005 case R_390_GOTENT:
1006 case R_390_GOTPLT12:
1007 case R_390_GOTPLT16:
1008 case R_390_GOTPLT20:
1009 case R_390_GOTPLT32:
1010 case R_390_GOTPLTENT:
1011 case R_390_TLS_GD32:
1012 case R_390_TLS_GOTIE12:
1013 case R_390_TLS_GOTIE20:
1014 case R_390_TLS_GOTIE32:
1015 case R_390_TLS_IEENT:
1016 case R_390_TLS_IE32:
1017 case R_390_TLS_LDM32:
1018 if (h == NULL
1019 && local_got_refcounts == NULL)
1020 {
1021 bfd_size_type size;
1022
1023 size = symtab_hdr->sh_info;
1024 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1025 local_got_refcounts = ((bfd_signed_vma *)
1026 bfd_zalloc (abfd, size));
1027 if (local_got_refcounts == NULL)
1028 return FALSE;
1029 elf_local_got_refcounts (abfd) = local_got_refcounts;
1030 elf_s390_local_got_tls_type (abfd)
1031 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1032 }
1033 /* Fall through. */
1034 case R_390_GOTOFF16:
1035 case R_390_GOTOFF32:
1036 case R_390_GOTPC:
1037 case R_390_GOTPCDBL:
1038 if (htab->sgot == NULL)
1039 {
1040 if (htab->elf.dynobj == NULL)
1041 htab->elf.dynobj = abfd;
1042 if (!create_got_section (htab->elf.dynobj, info))
1043 return FALSE;
1044 }
1045 }
1046
1047 switch (r_type)
1048 {
1049 case R_390_GOTOFF16:
1050 case R_390_GOTOFF32:
1051 case R_390_GOTPC:
1052 case R_390_GOTPCDBL:
1053 /* Got is created, nothing to be done. */
1054 break;
1055
1056 case R_390_PLT16DBL:
1057 case R_390_PLT32DBL:
1058 case R_390_PLT32:
1059 case R_390_PLTOFF16:
1060 case R_390_PLTOFF32:
1061 /* This symbol requires a procedure linkage table entry. We
1062 actually build the entry in adjust_dynamic_symbol,
1063 because this might be a case of linking PIC code which is
1064 never referenced by a dynamic object, in which case we
1065 don't need to generate a procedure linkage table entry
1066 after all. */
1067
1068 /* If this is a local symbol, we resolve it directly without
1069 creating a procedure linkage table entry. */
1070 if (h != NULL)
1071 {
1072 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1073 h->plt.refcount += 1;
1074 }
1075 break;
1076
1077 case R_390_GOTPLT12:
1078 case R_390_GOTPLT16:
1079 case R_390_GOTPLT20:
1080 case R_390_GOTPLT32:
1081 case R_390_GOTPLTENT:
1082 /* This symbol requires either a procedure linkage table entry
1083 or an entry in the local got. We actually build the entry
1084 in adjust_dynamic_symbol because whether this is really a
1085 global reference can change and with it the fact if we have
1086 to create a plt entry or a local got entry. To be able to
1087 make a once global symbol a local one we have to keep track
1088 of the number of gotplt references that exist for this
1089 symbol. */
1090 if (h != NULL)
1091 {
1092 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1093 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1094 h->plt.refcount += 1;
1095 }
1096 else
1097 local_got_refcounts[r_symndx] += 1;
1098 break;
1099
1100 case R_390_TLS_LDM32:
1101 htab->tls_ldm_got.refcount += 1;
1102 break;
1103
1104 case R_390_TLS_IE32:
1105 case R_390_TLS_GOTIE12:
1106 case R_390_TLS_GOTIE20:
1107 case R_390_TLS_GOTIE32:
1108 case R_390_TLS_IEENT:
1109 if (info->shared)
1110 info->flags |= DF_STATIC_TLS;
1111 /* Fall through. */
1112
1113 case R_390_GOT12:
1114 case R_390_GOT16:
1115 case R_390_GOT20:
1116 case R_390_GOT32:
1117 case R_390_GOTENT:
1118 case R_390_TLS_GD32:
1119 /* This symbol requires a global offset table entry. */
1120 switch (r_type)
1121 {
1122 default:
1123 case R_390_GOT12:
1124 case R_390_GOT16:
1125 case R_390_GOT20:
1126 case R_390_GOT32:
1127 case R_390_GOTENT:
1128 tls_type = GOT_NORMAL;
1129 break;
1130 case R_390_TLS_GD32:
1131 tls_type = GOT_TLS_GD;
1132 break;
1133 case R_390_TLS_IE32:
1134 case R_390_TLS_GOTIE32:
1135 tls_type = GOT_TLS_IE;
1136 break;
1137 case R_390_TLS_GOTIE12:
1138 case R_390_TLS_GOTIE20:
1139 case R_390_TLS_IEENT:
1140 tls_type = GOT_TLS_IE_NLT;
1141 break;
1142 }
1143
1144 if (h != NULL)
1145 {
1146 h->got.refcount += 1;
1147 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1148 }
1149 else
1150 {
1151 local_got_refcounts[r_symndx] += 1;
1152 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1153 }
1154 /* If a TLS symbol is accessed using IE at least once,
1155 there is no point to use dynamic model for it. */
1156 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1157 {
1158 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1159 {
1160 (*_bfd_error_handler)
1161 (_("%s: `%s' accessed both as normal and thread local symbol"),
1162 bfd_archive_filename (abfd), h->root.root.string);
1163 return FALSE;
1164 }
1165 if (old_tls_type > tls_type)
1166 tls_type = old_tls_type;
1167 }
1168
1169 if (old_tls_type != tls_type)
1170 {
1171 if (h != NULL)
1172 elf_s390_hash_entry (h)->tls_type = tls_type;
1173 else
1174 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1175 }
1176
1177 if (r_type != R_390_TLS_IE32)
1178 break;
1179 /* Fall through. */
1180
1181 case R_390_TLS_LE32:
1182 if (!info->shared)
1183 break;
1184 info->flags |= DF_STATIC_TLS;
1185 /* Fall through. */
1186
1187 case R_390_8:
1188 case R_390_16:
1189 case R_390_32:
1190 case R_390_PC16:
1191 case R_390_PC16DBL:
1192 case R_390_PC32DBL:
1193 case R_390_PC32:
1194 if (h != NULL && !info->shared)
1195 {
1196 /* If this reloc is in a read-only section, we might
1197 need a copy reloc. We can't check reliably at this
1198 stage whether the section is read-only, as input
1199 sections have not yet been mapped to output sections.
1200 Tentatively set the flag for now, and correct in
1201 adjust_dynamic_symbol. */
1202 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1203
1204 /* We may need a .plt entry if the function this reloc
1205 refers to is in a shared lib. */
1206 h->plt.refcount += 1;
1207 }
1208
1209 /* If we are creating a shared library, and this is a reloc
1210 against a global symbol, or a non PC relative reloc
1211 against a local symbol, then we need to copy the reloc
1212 into the shared library. However, if we are linking with
1213 -Bsymbolic, we do not need to copy a reloc against a
1214 global symbol which is defined in an object we are
1215 including in the link (i.e., DEF_REGULAR is set). At
1216 this point we have not seen all the input files, so it is
1217 possible that DEF_REGULAR is not set now but will be set
1218 later (it is never cleared). In case of a weak definition,
1219 DEF_REGULAR may be cleared later by a strong definition in
1220 a shared library. We account for that possibility below by
1221 storing information in the relocs_copied field of the hash
1222 table entry. A similar situation occurs when creating
1223 shared libraries and symbol visibility changes render the
1224 symbol local.
1225
1226 If on the other hand, we are creating an executable, we
1227 may need to keep relocations for symbols satisfied by a
1228 dynamic library if we manage to avoid copy relocs for the
1229 symbol. */
1230 if ((info->shared
1231 && (sec->flags & SEC_ALLOC) != 0
1232 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1233 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1234 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1235 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1236 || (h != NULL
1237 && (! info->symbolic
1238 || h->root.type == bfd_link_hash_defweak
1239 || (h->elf_link_hash_flags
1240 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1241 || (ELIMINATE_COPY_RELOCS
1242 && !info->shared
1243 && (sec->flags & SEC_ALLOC) != 0
1244 && h != NULL
1245 && (h->root.type == bfd_link_hash_defweak
1246 || (h->elf_link_hash_flags
1247 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1248 {
1249 struct elf_s390_dyn_relocs *p;
1250 struct elf_s390_dyn_relocs **head;
1251
1252 /* We must copy these reloc types into the output file.
1253 Create a reloc section in dynobj and make room for
1254 this reloc. */
1255 if (sreloc == NULL)
1256 {
1257 const char *name;
1258 bfd *dynobj;
1259
1260 name = (bfd_elf_string_from_elf_section
1261 (abfd,
1262 elf_elfheader (abfd)->e_shstrndx,
1263 elf_section_data (sec)->rel_hdr.sh_name));
1264 if (name == NULL)
1265 return FALSE;
1266
1267 if (strncmp (name, ".rela", 5) != 0
1268 || strcmp (bfd_get_section_name (abfd, sec),
1269 name + 5) != 0)
1270 {
1271 (*_bfd_error_handler)
1272 (_("%s: bad relocation section name `%s\'"),
1273 bfd_archive_filename (abfd), name);
1274 }
1275
1276 if (htab->elf.dynobj == NULL)
1277 htab->elf.dynobj = abfd;
1278
1279 dynobj = htab->elf.dynobj;
1280 sreloc = bfd_get_section_by_name (dynobj, name);
1281 if (sreloc == NULL)
1282 {
1283 flagword flags;
1284
1285 sreloc = bfd_make_section (dynobj, name);
1286 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1287 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1288 if ((sec->flags & SEC_ALLOC) != 0)
1289 flags |= SEC_ALLOC | SEC_LOAD;
1290 if (sreloc == NULL
1291 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1292 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1293 return FALSE;
1294 }
1295 elf_section_data (sec)->sreloc = sreloc;
1296 }
1297
1298 /* If this is a global symbol, we count the number of
1299 relocations we need for this symbol. */
1300 if (h != NULL)
1301 {
1302 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1303 }
1304 else
1305 {
1306 /* Track dynamic relocs needed for local syms too.
1307 We really need local syms available to do this
1308 easily. Oh well. */
1309 asection *s;
1310
1311 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1312 sec, r_symndx);
1313 if (s == NULL)
1314 return FALSE;
1315
1316 head = ((struct elf_s390_dyn_relocs **)
1317 &elf_section_data (s)->local_dynrel);
1318 }
1319
1320 p = *head;
1321 if (p == NULL || p->sec != sec)
1322 {
1323 bfd_size_type amt = sizeof *p;
1324
1325 p = ((struct elf_s390_dyn_relocs *)
1326 bfd_alloc (htab->elf.dynobj, amt));
1327 if (p == NULL)
1328 return FALSE;
1329 p->next = *head;
1330 *head = p;
1331 p->sec = sec;
1332 p->count = 0;
1333 p->pc_count = 0;
1334 }
1335
1336 p->count += 1;
1337 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1338 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1339 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1340 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1341 p->pc_count += 1;
1342 }
1343 break;
1344
1345 /* This relocation describes the C++ object vtable hierarchy.
1346 Reconstruct it for later use during GC. */
1347 case R_390_GNU_VTINHERIT:
1348 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1349 return FALSE;
1350 break;
1351
1352 /* This relocation describes which C++ vtable entries are actually
1353 used. Record for later use during GC. */
1354 case R_390_GNU_VTENTRY:
1355 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1356 return FALSE;
1357 break;
1358
1359 default:
1360 break;
1361 }
1362 }
1363
1364 return TRUE;
1365 }
1366
1367 /* Return the section that should be marked against GC for a given
1368 relocation. */
1369
1370 static asection *
1371 elf_s390_gc_mark_hook (sec, info, rel, h, sym)
1372 asection *sec;
1373 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1374 Elf_Internal_Rela *rel;
1375 struct elf_link_hash_entry *h;
1376 Elf_Internal_Sym *sym;
1377 {
1378 if (h != NULL)
1379 {
1380 switch (ELF32_R_TYPE (rel->r_info))
1381 {
1382 case R_390_GNU_VTINHERIT:
1383 case R_390_GNU_VTENTRY:
1384 break;
1385
1386 default:
1387 switch (h->root.type)
1388 {
1389 case bfd_link_hash_defined:
1390 case bfd_link_hash_defweak:
1391 return h->root.u.def.section;
1392
1393 case bfd_link_hash_common:
1394 return h->root.u.c.p->section;
1395
1396 default:
1397 break;
1398 }
1399 }
1400 }
1401 else
1402 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1403
1404 return NULL;
1405 }
1406
1407 /* Update the got entry reference counts for the section being removed. */
1408
1409 static bfd_boolean
1410 elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
1411 bfd *abfd;
1412 struct bfd_link_info *info;
1413 asection *sec;
1414 const Elf_Internal_Rela *relocs;
1415 {
1416 Elf_Internal_Shdr *symtab_hdr;
1417 struct elf_link_hash_entry **sym_hashes;
1418 bfd_signed_vma *local_got_refcounts;
1419 const Elf_Internal_Rela *rel, *relend;
1420
1421 elf_section_data (sec)->local_dynrel = NULL;
1422
1423 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1424 sym_hashes = elf_sym_hashes (abfd);
1425 local_got_refcounts = elf_local_got_refcounts (abfd);
1426
1427 relend = relocs + sec->reloc_count;
1428 for (rel = relocs; rel < relend; rel++)
1429 {
1430 unsigned long r_symndx;
1431 unsigned int r_type;
1432 struct elf_link_hash_entry *h = NULL;
1433
1434 r_symndx = ELF32_R_SYM (rel->r_info);
1435 if (r_symndx >= symtab_hdr->sh_info)
1436 {
1437 struct elf_s390_link_hash_entry *eh;
1438 struct elf_s390_dyn_relocs **pp;
1439 struct elf_s390_dyn_relocs *p;
1440
1441 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1442 eh = (struct elf_s390_link_hash_entry *) h;
1443
1444 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1445 if (p->sec == sec)
1446 {
1447 /* Everything must go for SEC. */
1448 *pp = p->next;
1449 break;
1450 }
1451 }
1452
1453 r_type = ELF32_R_TYPE (rel->r_info);
1454 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1455 switch (r_type)
1456 {
1457 case R_390_TLS_LDM32:
1458 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1459 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1460 break;
1461
1462 case R_390_TLS_GD32:
1463 case R_390_TLS_IE32:
1464 case R_390_TLS_GOTIE12:
1465 case R_390_TLS_GOTIE20:
1466 case R_390_TLS_GOTIE32:
1467 case R_390_TLS_IEENT:
1468 case R_390_GOT12:
1469 case R_390_GOT16:
1470 case R_390_GOT20:
1471 case R_390_GOT32:
1472 case R_390_GOTOFF16:
1473 case R_390_GOTOFF32:
1474 case R_390_GOTPC:
1475 case R_390_GOTPCDBL:
1476 case R_390_GOTENT:
1477 if (h != NULL)
1478 {
1479 if (h->got.refcount > 0)
1480 h->got.refcount -= 1;
1481 }
1482 else if (local_got_refcounts != NULL)
1483 {
1484 if (local_got_refcounts[r_symndx] > 0)
1485 local_got_refcounts[r_symndx] -= 1;
1486 }
1487 break;
1488
1489 case R_390_8:
1490 case R_390_12:
1491 case R_390_16:
1492 case R_390_20:
1493 case R_390_32:
1494 case R_390_PC16:
1495 case R_390_PC16DBL:
1496 case R_390_PC32DBL:
1497 case R_390_PC32:
1498 if (info->shared)
1499 break;
1500 /* Fall through. */
1501
1502 case R_390_PLT16DBL:
1503 case R_390_PLT32DBL:
1504 case R_390_PLT32:
1505 case R_390_PLTOFF16:
1506 case R_390_PLTOFF32:
1507 if (h != NULL)
1508 {
1509 if (h->plt.refcount > 0)
1510 h->plt.refcount -= 1;
1511 }
1512 break;
1513
1514 case R_390_GOTPLT12:
1515 case R_390_GOTPLT16:
1516 case R_390_GOTPLT20:
1517 case R_390_GOTPLT32:
1518 case R_390_GOTPLTENT:
1519 if (h != NULL)
1520 {
1521 if (h->plt.refcount > 0)
1522 {
1523 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1524 h->plt.refcount -= 1;
1525 }
1526 }
1527 else if (local_got_refcounts != NULL)
1528 {
1529 if (local_got_refcounts[r_symndx] > 0)
1530 local_got_refcounts[r_symndx] -= 1;
1531 }
1532 break;
1533
1534 default:
1535 break;
1536 }
1537 }
1538
1539 return TRUE;
1540 }
1541
1542 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1543 entry but we found we will not create any. Called when we find we will
1544 not have any PLT for this symbol, by for example
1545 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1546 or elf_s390_size_dynamic_sections if no dynamic sections will be
1547 created (we're only linking static objects). */
1548
1549 static void
1550 elf_s390_adjust_gotplt (h)
1551 struct elf_s390_link_hash_entry *h;
1552 {
1553 if (h->elf.root.type == bfd_link_hash_warning)
1554 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1555
1556 if (h->gotplt_refcount <= 0)
1557 return;
1558
1559 /* We simply add the number of gotplt references to the number
1560 * of got references for this symbol. */
1561 h->elf.got.refcount += h->gotplt_refcount;
1562 h->gotplt_refcount = -1;
1563 }
1564
1565 /* Adjust a symbol defined by a dynamic object and referenced by a
1566 regular object. The current definition is in some section of the
1567 dynamic object, but we're not including those sections. We have to
1568 change the definition to something the rest of the link can
1569 understand. */
1570
1571 static bfd_boolean
1572 elf_s390_adjust_dynamic_symbol (info, h)
1573 struct bfd_link_info *info;
1574 struct elf_link_hash_entry *h;
1575 {
1576 struct elf_s390_link_hash_table *htab;
1577 asection *s;
1578 unsigned int power_of_two;
1579
1580 /* If this is a function, put it in the procedure linkage table. We
1581 will fill in the contents of the procedure linkage table later
1582 (although we could actually do it here). */
1583 if (h->type == STT_FUNC
1584 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1585 {
1586 if (h->plt.refcount <= 0
1587 || (! info->shared
1588 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1589 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1590 && h->root.type != bfd_link_hash_undefweak
1591 && h->root.type != bfd_link_hash_undefined))
1592 {
1593 /* This case can occur if we saw a PLT32 reloc in an input
1594 file, but the symbol was never referred to by a dynamic
1595 object, or if all references were garbage collected. In
1596 such a case, we don't actually need to build a procedure
1597 linkage table, and we can just do a PC32 reloc instead. */
1598 h->plt.offset = (bfd_vma) -1;
1599 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1600 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1601 }
1602
1603 return TRUE;
1604 }
1605 else
1606 /* It's possible that we incorrectly decided a .plt reloc was
1607 needed for an R_390_PC32 reloc to a non-function sym in
1608 check_relocs. We can't decide accurately between function and
1609 non-function syms in check-relocs; Objects loaded later in
1610 the link may change h->type. So fix it now. */
1611 h->plt.offset = (bfd_vma) -1;
1612
1613 /* If this is a weak symbol, and there is a real definition, the
1614 processor independent code will have arranged for us to see the
1615 real definition first, and we can just use the same value. */
1616 if (h->weakdef != NULL)
1617 {
1618 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1619 || h->weakdef->root.type == bfd_link_hash_defweak);
1620 h->root.u.def.section = h->weakdef->root.u.def.section;
1621 h->root.u.def.value = h->weakdef->root.u.def.value;
1622 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1623 h->elf_link_hash_flags
1624 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
1625 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
1626 return TRUE;
1627 }
1628
1629 /* This is a reference to a symbol defined by a dynamic object which
1630 is not a function. */
1631
1632 /* If we are creating a shared library, we must presume that the
1633 only references to the symbol are via the global offset table.
1634 For such cases we need not do anything here; the relocations will
1635 be handled correctly by relocate_section. */
1636 if (info->shared)
1637 return TRUE;
1638
1639 /* If there are no references to this symbol that do not use the
1640 GOT, we don't need to generate a copy reloc. */
1641 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1642 return TRUE;
1643
1644 /* If -z nocopyreloc was given, we won't generate them either. */
1645 if (info->nocopyreloc)
1646 {
1647 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1648 return TRUE;
1649 }
1650
1651 if (ELIMINATE_COPY_RELOCS)
1652 {
1653 struct elf_s390_link_hash_entry * eh;
1654 struct elf_s390_dyn_relocs *p;
1655
1656 eh = (struct elf_s390_link_hash_entry *) h;
1657 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1658 {
1659 s = p->sec->output_section;
1660 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1661 break;
1662 }
1663
1664 /* If we didn't find any dynamic relocs in read-only sections, then
1665 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1666 if (p == NULL)
1667 {
1668 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1669 return TRUE;
1670 }
1671 }
1672
1673 /* We must allocate the symbol in our .dynbss section, which will
1674 become part of the .bss section of the executable. There will be
1675 an entry for this symbol in the .dynsym section. The dynamic
1676 object will contain position independent code, so all references
1677 from the dynamic object to this symbol will go through the global
1678 offset table. The dynamic linker will use the .dynsym entry to
1679 determine the address it must put in the global offset table, so
1680 both the dynamic object and the regular object will refer to the
1681 same memory location for the variable. */
1682
1683 htab = elf_s390_hash_table (info);
1684
1685 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1686 copy the initial value out of the dynamic object and into the
1687 runtime process image. */
1688 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1689 {
1690 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1691 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1692 }
1693
1694 /* We need to figure out the alignment required for this symbol. I
1695 have no idea how ELF linkers handle this. */
1696 power_of_two = bfd_log2 (h->size);
1697 if (power_of_two > 3)
1698 power_of_two = 3;
1699
1700 /* Apply the required alignment. */
1701 s = htab->sdynbss;
1702 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
1703 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1704 {
1705 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1706 return FALSE;
1707 }
1708
1709 /* Define the symbol as being at this point in the section. */
1710 h->root.u.def.section = s;
1711 h->root.u.def.value = s->_raw_size;
1712
1713 /* Increment the section size to make room for the symbol. */
1714 s->_raw_size += h->size;
1715
1716 return TRUE;
1717 }
1718
1719 /* This is the condition under which elf_s390_finish_dynamic_symbol
1720 will be called from elflink.h. If elflink.h doesn't call our
1721 finish_dynamic_symbol routine, we'll need to do something about
1722 initializing any .plt and .got entries in elf_s390_relocate_section. */
1723 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
1724 ((DYN) \
1725 && ((SHARED) \
1726 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1727 && ((H)->dynindx != -1 \
1728 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1729
1730 /* Allocate space in .plt, .got and associated reloc sections for
1731 dynamic relocs. */
1732
1733 static bfd_boolean
1734 allocate_dynrelocs (h, inf)
1735 struct elf_link_hash_entry *h;
1736 PTR inf;
1737 {
1738 struct bfd_link_info *info;
1739 struct elf_s390_link_hash_table *htab;
1740 struct elf_s390_link_hash_entry *eh;
1741 struct elf_s390_dyn_relocs *p;
1742
1743 if (h->root.type == bfd_link_hash_indirect)
1744 return TRUE;
1745
1746 if (h->root.type == bfd_link_hash_warning)
1747 /* When warning symbols are created, they **replace** the "real"
1748 entry in the hash table, thus we never get to see the real
1749 symbol in a hash traversal. So look at it now. */
1750 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1751
1752 info = (struct bfd_link_info *) inf;
1753 htab = elf_s390_hash_table (info);
1754
1755 if (htab->elf.dynamic_sections_created
1756 && h->plt.refcount > 0
1757 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1758 || h->root.type != bfd_link_hash_undefweak))
1759 {
1760 /* Make sure this symbol is output as a dynamic symbol.
1761 Undefined weak syms won't yet be marked as dynamic. */
1762 if (h->dynindx == -1
1763 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1764 {
1765 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1766 return FALSE;
1767 }
1768
1769 if (info->shared
1770 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1771 {
1772 asection *s = htab->splt;
1773
1774 /* If this is the first .plt entry, make room for the special
1775 first entry. */
1776 if (s->_raw_size == 0)
1777 s->_raw_size += PLT_FIRST_ENTRY_SIZE;
1778
1779 h->plt.offset = s->_raw_size;
1780
1781 /* If this symbol is not defined in a regular file, and we are
1782 not generating a shared library, then set the symbol to this
1783 location in the .plt. This is required to make function
1784 pointers compare as equal between the normal executable and
1785 the shared library. */
1786 if (! info->shared
1787 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1788 {
1789 h->root.u.def.section = s;
1790 h->root.u.def.value = h->plt.offset;
1791 }
1792
1793 /* Make room for this entry. */
1794 s->_raw_size += PLT_ENTRY_SIZE;
1795
1796 /* We also need to make an entry in the .got.plt section, which
1797 will be placed in the .got section by the linker script. */
1798 htab->sgotplt->_raw_size += GOT_ENTRY_SIZE;
1799
1800 /* We also need to make an entry in the .rela.plt section. */
1801 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
1802 }
1803 else
1804 {
1805 h->plt.offset = (bfd_vma) -1;
1806 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1807 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1808 }
1809 }
1810 else
1811 {
1812 h->plt.offset = (bfd_vma) -1;
1813 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1814 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1815 }
1816
1817 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1818 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1819 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1820 we can save the dynamic TLS relocation. */
1821 if (h->got.refcount > 0
1822 && !info->shared
1823 && h->dynindx == -1
1824 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1825 {
1826 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1827 /* For the GOTIE access without a literal pool entry the offset has
1828 to be stored somewhere. The immediate value in the instruction
1829 is not bit enough so the value is stored in the got. */
1830 {
1831 h->got.offset = htab->sgot->_raw_size;
1832 htab->sgot->_raw_size += GOT_ENTRY_SIZE;
1833 }
1834 else
1835 h->got.offset = (bfd_vma) -1;
1836 }
1837 else if (h->got.refcount > 0)
1838 {
1839 asection *s;
1840 bfd_boolean dyn;
1841 int tls_type = elf_s390_hash_entry(h)->tls_type;
1842
1843 /* Make sure this symbol is output as a dynamic symbol.
1844 Undefined weak syms won't yet be marked as dynamic. */
1845 if (h->dynindx == -1
1846 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1847 {
1848 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1849 return FALSE;
1850 }
1851
1852 s = htab->sgot;
1853 h->got.offset = s->_raw_size;
1854 s->_raw_size += GOT_ENTRY_SIZE;
1855 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1856 if (tls_type == GOT_TLS_GD)
1857 s->_raw_size += GOT_ENTRY_SIZE;
1858 dyn = htab->elf.dynamic_sections_created;
1859 /* R_390_TLS_IE32 needs one dynamic relocation,
1860 R_390_TLS_GD32 needs one if local symbol and two if global. */
1861 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1862 || tls_type >= GOT_TLS_IE)
1863 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1864 else if (tls_type == GOT_TLS_GD)
1865 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
1866 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1867 || h->root.type != bfd_link_hash_undefweak)
1868 && (info->shared
1869 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1870 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1871 }
1872 else
1873 h->got.offset = (bfd_vma) -1;
1874
1875 eh = (struct elf_s390_link_hash_entry *) h;
1876 if (eh->dyn_relocs == NULL)
1877 return TRUE;
1878
1879 /* In the shared -Bsymbolic case, discard space allocated for
1880 dynamic pc-relative relocs against symbols which turn out to be
1881 defined in regular objects. For the normal shared case, discard
1882 space for pc-relative relocs that have become local due to symbol
1883 visibility changes. */
1884
1885 if (info->shared)
1886 {
1887 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1888 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
1889 || info->symbolic))
1890 {
1891 struct elf_s390_dyn_relocs **pp;
1892
1893 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1894 {
1895 p->count -= p->pc_count;
1896 p->pc_count = 0;
1897 if (p->count == 0)
1898 *pp = p->next;
1899 else
1900 pp = &p->next;
1901 }
1902 }
1903
1904 /* Also discard relocs on undefined weak syms with non-default
1905 visibility. */
1906 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1907 && h->root.type == bfd_link_hash_undefweak)
1908 eh->dyn_relocs = NULL;
1909 }
1910 else if (ELIMINATE_COPY_RELOCS)
1911 {
1912 /* For the non-shared case, discard space for relocs against
1913 symbols which turn out to need copy relocs or are not
1914 dynamic. */
1915
1916 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1917 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1918 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1919 || (htab->elf.dynamic_sections_created
1920 && (h->root.type == bfd_link_hash_undefweak
1921 || h->root.type == bfd_link_hash_undefined))))
1922 {
1923 /* Make sure this symbol is output as a dynamic symbol.
1924 Undefined weak syms won't yet be marked as dynamic. */
1925 if (h->dynindx == -1
1926 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1927 {
1928 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1929 return FALSE;
1930 }
1931
1932 /* If that succeeded, we know we'll be keeping all the
1933 relocs. */
1934 if (h->dynindx != -1)
1935 goto keep;
1936 }
1937
1938 eh->dyn_relocs = NULL;
1939
1940 keep: ;
1941 }
1942
1943 /* Finally, allocate space. */
1944 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1945 {
1946 asection *sreloc = elf_section_data (p->sec)->sreloc;
1947
1948 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
1949 }
1950
1951 return TRUE;
1952 }
1953
1954 /* Find any dynamic relocs that apply to read-only sections. */
1955
1956 static bfd_boolean
1957 readonly_dynrelocs (h, inf)
1958 struct elf_link_hash_entry *h;
1959 PTR inf;
1960 {
1961 struct elf_s390_link_hash_entry *eh;
1962 struct elf_s390_dyn_relocs *p;
1963
1964 if (h->root.type == bfd_link_hash_warning)
1965 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1966
1967 eh = (struct elf_s390_link_hash_entry *) h;
1968 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1969 {
1970 asection *s = p->sec->output_section;
1971
1972 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1973 {
1974 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1975
1976 info->flags |= DF_TEXTREL;
1977
1978 /* Not an error, just cut short the traversal. */
1979 return FALSE;
1980 }
1981 }
1982 return TRUE;
1983 }
1984
1985 /* Set the sizes of the dynamic sections. */
1986
1987 static bfd_boolean
1988 elf_s390_size_dynamic_sections (output_bfd, info)
1989 bfd *output_bfd ATTRIBUTE_UNUSED;
1990 struct bfd_link_info *info;
1991 {
1992 struct elf_s390_link_hash_table *htab;
1993 bfd *dynobj;
1994 asection *s;
1995 bfd_boolean relocs;
1996 bfd *ibfd;
1997
1998 htab = elf_s390_hash_table (info);
1999 dynobj = htab->elf.dynobj;
2000 if (dynobj == NULL)
2001 abort ();
2002
2003 if (htab->elf.dynamic_sections_created)
2004 {
2005 /* Set the contents of the .interp section to the interpreter. */
2006 if (info->executable)
2007 {
2008 s = bfd_get_section_by_name (dynobj, ".interp");
2009 if (s == NULL)
2010 abort ();
2011 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2012 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2013 }
2014 }
2015
2016 /* Set up .got offsets for local syms, and space for local dynamic
2017 relocs. */
2018 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2019 {
2020 bfd_signed_vma *local_got;
2021 bfd_signed_vma *end_local_got;
2022 char *local_tls_type;
2023 bfd_size_type locsymcount;
2024 Elf_Internal_Shdr *symtab_hdr;
2025 asection *srela;
2026
2027 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2028 continue;
2029
2030 for (s = ibfd->sections; s != NULL; s = s->next)
2031 {
2032 struct elf_s390_dyn_relocs *p;
2033
2034 for (p = *((struct elf_s390_dyn_relocs **)
2035 &elf_section_data (s)->local_dynrel);
2036 p != NULL;
2037 p = p->next)
2038 {
2039 if (!bfd_is_abs_section (p->sec)
2040 && bfd_is_abs_section (p->sec->output_section))
2041 {
2042 /* Input section has been discarded, either because
2043 it is a copy of a linkonce section or due to
2044 linker script /DISCARD/, so we'll be discarding
2045 the relocs too. */
2046 }
2047 else if (p->count != 0)
2048 {
2049 srela = elf_section_data (p->sec)->sreloc;
2050 srela->_raw_size += p->count * sizeof (Elf32_External_Rela);
2051 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2052 info->flags |= DF_TEXTREL;
2053 }
2054 }
2055 }
2056
2057 local_got = elf_local_got_refcounts (ibfd);
2058 if (!local_got)
2059 continue;
2060
2061 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2062 locsymcount = symtab_hdr->sh_info;
2063 end_local_got = local_got + locsymcount;
2064 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2065 s = htab->sgot;
2066 srela = htab->srelgot;
2067 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2068 {
2069 if (*local_got > 0)
2070 {
2071 *local_got = s->_raw_size;
2072 s->_raw_size += GOT_ENTRY_SIZE;
2073 if (*local_tls_type == GOT_TLS_GD)
2074 s->_raw_size += GOT_ENTRY_SIZE;
2075 if (info->shared)
2076 srela->_raw_size += sizeof (Elf32_External_Rela);
2077 }
2078 else
2079 *local_got = (bfd_vma) -1;
2080 }
2081 }
2082
2083 if (htab->tls_ldm_got.refcount > 0)
2084 {
2085 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2086 relocs. */
2087 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
2088 htab->sgot->_raw_size += 2 * GOT_ENTRY_SIZE;
2089 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
2090 }
2091 else
2092 htab->tls_ldm_got.offset = -1;
2093
2094 /* Allocate global sym .plt and .got entries, and space for global
2095 sym dynamic relocs. */
2096 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2097
2098 /* We now have determined the sizes of the various dynamic sections.
2099 Allocate memory for them. */
2100 relocs = FALSE;
2101 for (s = dynobj->sections; s != NULL; s = s->next)
2102 {
2103 if ((s->flags & SEC_LINKER_CREATED) == 0)
2104 continue;
2105
2106 if (s == htab->splt
2107 || s == htab->sgot
2108 || s == htab->sgotplt)
2109 {
2110 /* Strip this section if we don't need it; see the
2111 comment below. */
2112 }
2113 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2114 {
2115 if (s->_raw_size != 0)
2116 relocs = TRUE;
2117
2118 /* We use the reloc_count field as a counter if we need
2119 to copy relocs into the output file. */
2120 s->reloc_count = 0;
2121 }
2122 else
2123 {
2124 /* It's not one of our sections, so don't allocate space. */
2125 continue;
2126 }
2127
2128 if (s->_raw_size == 0)
2129 {
2130 /* If we don't need this section, strip it from the
2131 output file. This is to handle .rela.bss and
2132 .rela.plt. We must create it in
2133 create_dynamic_sections, because it must be created
2134 before the linker maps input sections to output
2135 sections. The linker does that before
2136 adjust_dynamic_symbol is called, and it is that
2137 function which decides whether anything needs to go
2138 into these sections. */
2139
2140 _bfd_strip_section_from_output (info, s);
2141 continue;
2142 }
2143
2144 /* Allocate memory for the section contents. We use bfd_zalloc
2145 here in case unused entries are not reclaimed before the
2146 section's contents are written out. This should not happen,
2147 but this way if it does, we get a R_390_NONE reloc instead
2148 of garbage. */
2149 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2150 if (s->contents == NULL)
2151 return FALSE;
2152 }
2153
2154 if (htab->elf.dynamic_sections_created)
2155 {
2156 /* Add some entries to the .dynamic section. We fill in the
2157 values later, in elf_s390_finish_dynamic_sections, but we
2158 must add the entries now so that we get the correct size for
2159 the .dynamic section. The DT_DEBUG entry is filled in by the
2160 dynamic linker and used by the debugger. */
2161 #define add_dynamic_entry(TAG, VAL) \
2162 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2163
2164 if (info->executable)
2165 {
2166 if (!add_dynamic_entry (DT_DEBUG, 0))
2167 return FALSE;
2168 }
2169
2170 if (htab->splt->_raw_size != 0)
2171 {
2172 if (!add_dynamic_entry (DT_PLTGOT, 0)
2173 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2174 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2175 || !add_dynamic_entry (DT_JMPREL, 0))
2176 return FALSE;
2177 }
2178
2179 if (relocs)
2180 {
2181 if (!add_dynamic_entry (DT_RELA, 0)
2182 || !add_dynamic_entry (DT_RELASZ, 0)
2183 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2184 return FALSE;
2185
2186 /* If any dynamic relocs apply to a read-only section,
2187 then we need a DT_TEXTREL entry. */
2188 if ((info->flags & DF_TEXTREL) == 0)
2189 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2190 (PTR) info);
2191
2192 if ((info->flags & DF_TEXTREL) != 0)
2193 {
2194 if (!add_dynamic_entry (DT_TEXTREL, 0))
2195 return FALSE;
2196 }
2197 }
2198 }
2199 #undef add_dynamic_entry
2200
2201 return TRUE;
2202 }
2203
2204 /* Return the base VMA address which should be subtracted from real addresses
2205 when resolving @dtpoff relocation.
2206 This is PT_TLS segment p_vaddr. */
2207
2208 static bfd_vma
2209 dtpoff_base (info)
2210 struct bfd_link_info *info;
2211 {
2212 /* If tls_sec is NULL, we should have signalled an error already. */
2213 if (elf_hash_table (info)->tls_sec == NULL)
2214 return 0;
2215 return elf_hash_table (info)->tls_sec->vma;
2216 }
2217
2218 /* Return the relocation value for @tpoff relocation
2219 if STT_TLS virtual address is ADDRESS. */
2220
2221 static bfd_vma
2222 tpoff (info, address)
2223 struct bfd_link_info *info;
2224 bfd_vma address;
2225 {
2226 struct elf_link_hash_table *htab = elf_hash_table (info);
2227
2228 /* If tls_sec is NULL, we should have signalled an error already. */
2229 if (htab->tls_sec == NULL)
2230 return 0;
2231 return htab->tls_size + htab->tls_sec->vma - address;
2232 }
2233
2234 /* Complain if TLS instruction relocation is against an invalid
2235 instruction. */
2236
2237 static void
2238 invalid_tls_insn (input_bfd, input_section, rel)
2239 bfd *input_bfd;
2240 asection *input_section;
2241 Elf_Internal_Rela *rel;
2242 {
2243 reloc_howto_type *howto;
2244
2245 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2246 (*_bfd_error_handler)
2247 (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"),
2248 bfd_archive_filename (input_bfd),
2249 bfd_get_section_name (input_bfd, input_section),
2250 (long) rel->r_offset,
2251 howto->name);
2252 }
2253
2254 /* Relocate a 390 ELF section. */
2255
2256 static bfd_boolean
2257 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2258 contents, relocs, local_syms, local_sections)
2259 bfd *output_bfd;
2260 struct bfd_link_info *info;
2261 bfd *input_bfd;
2262 asection *input_section;
2263 bfd_byte *contents;
2264 Elf_Internal_Rela *relocs;
2265 Elf_Internal_Sym *local_syms;
2266 asection **local_sections;
2267 {
2268 struct elf_s390_link_hash_table *htab;
2269 Elf_Internal_Shdr *symtab_hdr;
2270 struct elf_link_hash_entry **sym_hashes;
2271 bfd_vma *local_got_offsets;
2272 Elf_Internal_Rela *rel;
2273 Elf_Internal_Rela *relend;
2274
2275 if (info->relocatable)
2276 return TRUE;
2277
2278 htab = elf_s390_hash_table (info);
2279 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2280 sym_hashes = elf_sym_hashes (input_bfd);
2281 local_got_offsets = elf_local_got_offsets (input_bfd);
2282
2283 rel = relocs;
2284 relend = relocs + input_section->reloc_count;
2285 for (; rel < relend; rel++)
2286 {
2287 unsigned int r_type;
2288 reloc_howto_type *howto;
2289 unsigned long r_symndx;
2290 struct elf_link_hash_entry *h;
2291 Elf_Internal_Sym *sym;
2292 asection *sec;
2293 bfd_vma off;
2294 bfd_vma relocation;
2295 bfd_boolean unresolved_reloc;
2296 bfd_reloc_status_type r;
2297 int tls_type;
2298
2299 r_type = ELF32_R_TYPE (rel->r_info);
2300 if (r_type == (int) R_390_GNU_VTINHERIT
2301 || r_type == (int) R_390_GNU_VTENTRY)
2302 continue;
2303 if (r_type >= (int) R_390_max)
2304 {
2305 bfd_set_error (bfd_error_bad_value);
2306 return FALSE;
2307 }
2308
2309 howto = elf_howto_table + r_type;
2310 r_symndx = ELF32_R_SYM (rel->r_info);
2311
2312 /* This is a final link. */
2313 h = NULL;
2314 sym = NULL;
2315 sec = NULL;
2316 unresolved_reloc = FALSE;
2317 if (r_symndx < symtab_hdr->sh_info)
2318 {
2319 sym = local_syms + r_symndx;
2320 sec = local_sections[r_symndx];
2321 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2322 }
2323 else
2324 {
2325 bfd_boolean warned ATTRIBUTE_UNUSED;
2326
2327 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
2328 symtab_hdr, relocation, sec,
2329 unresolved_reloc, info,
2330 warned);
2331 }
2332
2333 switch (r_type)
2334 {
2335 case R_390_GOTPLT12:
2336 case R_390_GOTPLT16:
2337 case R_390_GOTPLT20:
2338 case R_390_GOTPLT32:
2339 case R_390_GOTPLTENT:
2340 /* There are three cases for a GOTPLT relocation. 1) The
2341 relocation is against the jump slot entry of a plt that
2342 will get emitted to the output file. 2) The relocation
2343 is against the jump slot of a plt entry that has been
2344 removed. elf_s390_adjust_gotplt has created a GOT entry
2345 as replacement. 3) The relocation is against a local symbol.
2346 Cases 2) and 3) are the same as the GOT relocation code
2347 so we just have to test for case 1 and fall through for
2348 the other two. */
2349 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2350 {
2351 bfd_vma plt_index;
2352
2353 /* Calc. index no.
2354 Current offset - size first entry / entry size. */
2355 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2356 PLT_ENTRY_SIZE;
2357
2358 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2359 addr & GOT addr. */
2360 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2361 unresolved_reloc = FALSE;
2362
2363 if (r_type == R_390_GOTPLTENT)
2364 relocation += htab->sgot->output_section->vma;
2365 break;
2366 }
2367 /* Fall through. */
2368
2369 case R_390_GOT12:
2370 case R_390_GOT16:
2371 case R_390_GOT20:
2372 case R_390_GOT32:
2373 case R_390_GOTENT:
2374 /* Relocation is to the entry for this symbol in the global
2375 offset table. */
2376 if (htab->sgot == NULL)
2377 abort ();
2378
2379 if (h != NULL)
2380 {
2381 bfd_boolean dyn;
2382
2383 off = h->got.offset;
2384 dyn = htab->elf.dynamic_sections_created;
2385 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2386 || (info->shared
2387 && (info->symbolic
2388 || h->dynindx == -1
2389 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2390 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
2391 || (ELF_ST_VISIBILITY (h->other)
2392 && h->root.type == bfd_link_hash_undefweak))
2393 {
2394 /* This is actually a static link, or it is a
2395 -Bsymbolic link and the symbol is defined
2396 locally, or the symbol was forced to be local
2397 because of a version file. We must initialize
2398 this entry in the global offset table. Since the
2399 offset must always be a multiple of 2, we use the
2400 least significant bit to record whether we have
2401 initialized it already.
2402
2403 When doing a dynamic link, we create a .rel.got
2404 relocation entry to initialize the value. This
2405 is done in the finish_dynamic_symbol routine. */
2406 if ((off & 1) != 0)
2407 off &= ~1;
2408 else
2409 {
2410 bfd_put_32 (output_bfd, relocation,
2411 htab->sgot->contents + off);
2412 h->got.offset |= 1;
2413 }
2414 }
2415 else
2416 unresolved_reloc = FALSE;
2417 }
2418 else
2419 {
2420 if (local_got_offsets == NULL)
2421 abort ();
2422
2423 off = local_got_offsets[r_symndx];
2424
2425 /* The offset must always be a multiple of 4. We use
2426 the least significant bit to record whether we have
2427 already generated the necessary reloc. */
2428 if ((off & 1) != 0)
2429 off &= ~1;
2430 else
2431 {
2432 bfd_put_32 (output_bfd, relocation,
2433 htab->sgot->contents + off);
2434
2435 if (info->shared)
2436 {
2437 asection *srelgot;
2438 Elf_Internal_Rela outrel;
2439 bfd_byte *loc;
2440
2441 srelgot = htab->srelgot;
2442 if (srelgot == NULL)
2443 abort ();
2444
2445 outrel.r_offset = (htab->sgot->output_section->vma
2446 + htab->sgot->output_offset
2447 + off);
2448 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2449 outrel.r_addend = relocation;
2450 loc = srelgot->contents;
2451 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2452 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2453 }
2454
2455 local_got_offsets[r_symndx] |= 1;
2456 }
2457 }
2458
2459 if (off >= (bfd_vma) -2)
2460 abort ();
2461
2462 relocation = htab->sgot->output_offset + off;
2463
2464 /* For @GOTENT the relocation is against the offset between
2465 the instruction and the symbols entry in the GOT and not
2466 between the start of the GOT and the symbols entry. We
2467 add the vma of the GOT to get the correct value. */
2468 if ( r_type == R_390_GOTENT
2469 || r_type == R_390_GOTPLTENT)
2470 relocation += htab->sgot->output_section->vma;
2471
2472 break;
2473
2474 case R_390_GOTOFF16:
2475 case R_390_GOTOFF32:
2476 /* Relocation is relative to the start of the global offset
2477 table. */
2478
2479 /* Note that sgot->output_offset is not involved in this
2480 calculation. We always want the start of .got. If we
2481 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2482 permitted by the ABI, we might have to change this
2483 calculation. */
2484 relocation -= htab->sgot->output_section->vma;
2485 break;
2486
2487 case R_390_GOTPC:
2488 case R_390_GOTPCDBL:
2489 /* Use global offset table as symbol value. */
2490 relocation = htab->sgot->output_section->vma;
2491 unresolved_reloc = FALSE;
2492 break;
2493
2494 case R_390_PLT16DBL:
2495 case R_390_PLT32DBL:
2496 case R_390_PLT32:
2497 /* Relocation is to the entry for this symbol in the
2498 procedure linkage table. */
2499
2500 /* Resolve a PLT32 reloc against a local symbol directly,
2501 without using the procedure linkage table. */
2502 if (h == NULL)
2503 break;
2504
2505 if (h->plt.offset == (bfd_vma) -1
2506 || htab->splt == NULL)
2507 {
2508 /* We didn't make a PLT entry for this symbol. This
2509 happens when statically linking PIC code, or when
2510 using -Bsymbolic. */
2511 break;
2512 }
2513
2514 relocation = (htab->splt->output_section->vma
2515 + htab->splt->output_offset
2516 + h->plt.offset);
2517 unresolved_reloc = FALSE;
2518 break;
2519
2520 case R_390_PLTOFF16:
2521 case R_390_PLTOFF32:
2522 /* Relocation is to the entry for this symbol in the
2523 procedure linkage table relative to the start of the GOT. */
2524
2525 /* For local symbols or if we didn't make a PLT entry for
2526 this symbol resolve the symbol directly. */
2527 if ( h == NULL
2528 || h->plt.offset == (bfd_vma) -1
2529 || htab->splt == NULL)
2530 {
2531 relocation -= htab->sgot->output_section->vma;
2532 break;
2533 }
2534
2535 relocation = (htab->splt->output_section->vma
2536 + htab->splt->output_offset
2537 + h->plt.offset
2538 - htab->sgot->output_section->vma);
2539 unresolved_reloc = FALSE;
2540 break;
2541
2542 case R_390_8:
2543 case R_390_16:
2544 case R_390_32:
2545 case R_390_PC16:
2546 case R_390_PC16DBL:
2547 case R_390_PC32DBL:
2548 case R_390_PC32:
2549 /* r_symndx will be zero only for relocs against symbols
2550 from removed linkonce sections, or sections discarded by
2551 a linker script. */
2552 if (r_symndx == 0
2553 || (input_section->flags & SEC_ALLOC) == 0)
2554 break;
2555
2556 if ((info->shared
2557 && (h == NULL
2558 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2559 || h->root.type != bfd_link_hash_undefweak)
2560 && ((r_type != R_390_PC16
2561 && r_type != R_390_PC16DBL
2562 && r_type != R_390_PC32DBL
2563 && r_type != R_390_PC32)
2564 || (h != NULL
2565 && h->dynindx != -1
2566 && (! info->symbolic
2567 || (h->elf_link_hash_flags
2568 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2569 || (ELIMINATE_COPY_RELOCS
2570 && !info->shared
2571 && h != NULL
2572 && h->dynindx != -1
2573 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2574 && (((h->elf_link_hash_flags
2575 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2576 && (h->elf_link_hash_flags
2577 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2578 || h->root.type == bfd_link_hash_undefweak
2579 || h->root.type == bfd_link_hash_undefined)))
2580 {
2581 Elf_Internal_Rela outrel;
2582 bfd_boolean skip, relocate;
2583 asection *sreloc;
2584 bfd_byte *loc;
2585
2586 /* When generating a shared object, these relocations
2587 are copied into the output file to be resolved at run
2588 time. */
2589
2590 skip = FALSE;
2591 relocate = FALSE;
2592
2593 outrel.r_offset =
2594 _bfd_elf_section_offset (output_bfd, info, input_section,
2595 rel->r_offset);
2596 if (outrel.r_offset == (bfd_vma) -1)
2597 skip = TRUE;
2598 else if (outrel.r_offset == (bfd_vma) -2)
2599 skip = TRUE, relocate = TRUE;
2600 outrel.r_offset += (input_section->output_section->vma
2601 + input_section->output_offset);
2602
2603 if (skip)
2604 memset (&outrel, 0, sizeof outrel);
2605 else if (h != NULL
2606 && h->dynindx != -1
2607 && (r_type == R_390_PC16
2608 || r_type == R_390_PC16DBL
2609 || r_type == R_390_PC32DBL
2610 || r_type == R_390_PC32
2611 || !info->shared
2612 || !info->symbolic
2613 || (h->elf_link_hash_flags
2614 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2615 {
2616 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2617 outrel.r_addend = rel->r_addend;
2618 }
2619 else
2620 {
2621 /* This symbol is local, or marked to become local. */
2622 outrel.r_addend = relocation + rel->r_addend;
2623 if (r_type == R_390_32)
2624 {
2625 relocate = TRUE;
2626 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2627 }
2628 else
2629 {
2630 long sindx;
2631
2632 if (bfd_is_abs_section (sec))
2633 sindx = 0;
2634 else if (sec == NULL || sec->owner == NULL)
2635 {
2636 bfd_set_error(bfd_error_bad_value);
2637 return FALSE;
2638 }
2639 else
2640 {
2641 asection *osec;
2642
2643 osec = sec->output_section;
2644 sindx = elf_section_data (osec)->dynindx;
2645 BFD_ASSERT (sindx > 0);
2646
2647 /* We are turning this relocation into one
2648 against a section symbol, so subtract out
2649 the output section's address but not the
2650 offset of the input section in the output
2651 section. */
2652
2653 outrel.r_addend -= osec->vma;
2654 }
2655 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2656 }
2657 }
2658
2659 sreloc = elf_section_data (input_section)->sreloc;
2660 if (sreloc == NULL)
2661 abort ();
2662
2663 loc = sreloc->contents;
2664 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2665 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2666
2667 /* If this reloc is against an external symbol, we do
2668 not want to fiddle with the addend. Otherwise, we
2669 need to include the symbol value so that it becomes
2670 an addend for the dynamic reloc. */
2671 if (! relocate)
2672 continue;
2673 }
2674 break;
2675
2676 /* Relocations for tls literal pool entries. */
2677 case R_390_TLS_IE32:
2678 if (info->shared)
2679 {
2680 Elf_Internal_Rela outrel;
2681 asection *sreloc;
2682 bfd_byte *loc;
2683
2684 outrel.r_offset = rel->r_offset
2685 + input_section->output_section->vma
2686 + input_section->output_offset;
2687 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2688 sreloc = elf_section_data (input_section)->sreloc;
2689 if (sreloc == NULL)
2690 abort ();
2691 loc = sreloc->contents;
2692 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2693 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2694 }
2695 /* Fall through. */
2696
2697 case R_390_TLS_GD32:
2698 case R_390_TLS_GOTIE32:
2699 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2700 tls_type = GOT_UNKNOWN;
2701 if (h == NULL && local_got_offsets)
2702 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2703 else if (h != NULL)
2704 {
2705 tls_type = elf_s390_hash_entry(h)->tls_type;
2706 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2707 r_type = R_390_TLS_LE32;
2708 }
2709 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2710 r_type = R_390_TLS_IE32;
2711
2712 if (r_type == R_390_TLS_LE32)
2713 {
2714 /* This relocation gets optimized away by the local exec
2715 access optimization. */
2716 BFD_ASSERT (! unresolved_reloc);
2717 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2718 contents + rel->r_offset);
2719 continue;
2720 }
2721
2722 if (htab->sgot == NULL)
2723 abort ();
2724
2725 if (h != NULL)
2726 off = h->got.offset;
2727 else
2728 {
2729 if (local_got_offsets == NULL)
2730 abort ();
2731
2732 off = local_got_offsets[r_symndx];
2733 }
2734
2735 emit_tls_relocs:
2736
2737 if ((off & 1) != 0)
2738 off &= ~1;
2739 else
2740 {
2741 Elf_Internal_Rela outrel;
2742 bfd_byte *loc;
2743 int dr_type, indx;
2744
2745 if (htab->srelgot == NULL)
2746 abort ();
2747
2748 outrel.r_offset = (htab->sgot->output_section->vma
2749 + htab->sgot->output_offset + off);
2750
2751 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2752 if (r_type == R_390_TLS_GD32)
2753 dr_type = R_390_TLS_DTPMOD;
2754 else
2755 dr_type = R_390_TLS_TPOFF;
2756 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2757 outrel.r_addend = relocation - dtpoff_base (info);
2758 else
2759 outrel.r_addend = 0;
2760 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2761 loc = htab->srelgot->contents;
2762 loc += htab->srelgot->reloc_count++
2763 * sizeof (Elf32_External_Rela);
2764 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2765
2766 if (r_type == R_390_TLS_GD32)
2767 {
2768 if (indx == 0)
2769 {
2770 BFD_ASSERT (! unresolved_reloc);
2771 bfd_put_32 (output_bfd,
2772 relocation - dtpoff_base (info),
2773 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2774 }
2775 else
2776 {
2777 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2778 outrel.r_offset += GOT_ENTRY_SIZE;
2779 outrel.r_addend = 0;
2780 htab->srelgot->reloc_count++;
2781 loc += sizeof (Elf32_External_Rela);
2782 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2783 }
2784 }
2785
2786 if (h != NULL)
2787 h->got.offset |= 1;
2788 else
2789 local_got_offsets[r_symndx] |= 1;
2790 }
2791
2792 if (off >= (bfd_vma) -2)
2793 abort ();
2794 if (r_type == ELF32_R_TYPE (rel->r_info))
2795 {
2796 relocation = htab->sgot->output_offset + off;
2797 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2798 relocation += htab->sgot->output_section->vma;
2799 unresolved_reloc = FALSE;
2800 }
2801 else
2802 {
2803 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2804 contents + rel->r_offset);
2805 continue;
2806 }
2807 break;
2808
2809 case R_390_TLS_GOTIE12:
2810 case R_390_TLS_GOTIE20:
2811 case R_390_TLS_IEENT:
2812 if (h == NULL)
2813 {
2814 if (local_got_offsets == NULL)
2815 abort();
2816 off = local_got_offsets[r_symndx];
2817 if (info->shared)
2818 goto emit_tls_relocs;
2819 }
2820 else
2821 {
2822 off = h->got.offset;
2823 tls_type = elf_s390_hash_entry(h)->tls_type;
2824 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2825 goto emit_tls_relocs;
2826 }
2827
2828 if (htab->sgot == NULL)
2829 abort ();
2830
2831 BFD_ASSERT (! unresolved_reloc);
2832 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2833 htab->sgot->contents + off);
2834 relocation = htab->sgot->output_offset + off;
2835 if (r_type == R_390_TLS_IEENT)
2836 relocation += htab->sgot->output_section->vma;
2837 unresolved_reloc = FALSE;
2838 break;
2839
2840 case R_390_TLS_LDM32:
2841 if (! info->shared)
2842 /* The literal pool entry this relocation refers to gets ignored
2843 by the optimized code of the local exec model. Do nothing
2844 and the value will turn out zero. */
2845 continue;
2846
2847 if (htab->sgot == NULL)
2848 abort ();
2849
2850 off = htab->tls_ldm_got.offset;
2851 if (off & 1)
2852 off &= ~1;
2853 else
2854 {
2855 Elf_Internal_Rela outrel;
2856 bfd_byte *loc;
2857
2858 if (htab->srelgot == NULL)
2859 abort ();
2860
2861 outrel.r_offset = (htab->sgot->output_section->vma
2862 + htab->sgot->output_offset + off);
2863
2864 bfd_put_32 (output_bfd, 0,
2865 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2866 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2867 outrel.r_addend = 0;
2868 loc = htab->srelgot->contents;
2869 loc += htab->srelgot->reloc_count++
2870 * sizeof (Elf32_External_Rela);
2871 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2872 htab->tls_ldm_got.offset |= 1;
2873 }
2874 relocation = htab->sgot->output_offset + off;
2875 unresolved_reloc = FALSE;
2876 break;
2877
2878 case R_390_TLS_LE32:
2879 if (info->shared)
2880 {
2881 /* Linking a shared library with non-fpic code requires
2882 a R_390_TLS_TPOFF relocation. */
2883 Elf_Internal_Rela outrel;
2884 asection *sreloc;
2885 bfd_byte *loc;
2886 int indx;
2887
2888 outrel.r_offset = rel->r_offset
2889 + input_section->output_section->vma
2890 + input_section->output_offset;
2891 if (h != NULL && h->dynindx != -1)
2892 indx = h->dynindx;
2893 else
2894 indx = 0;
2895 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2896 if (indx == 0)
2897 outrel.r_addend = relocation - dtpoff_base (info);
2898 else
2899 outrel.r_addend = 0;
2900 sreloc = elf_section_data (input_section)->sreloc;
2901 if (sreloc == NULL)
2902 abort ();
2903 loc = sreloc->contents;
2904 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2905 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2906 }
2907 else
2908 {
2909 BFD_ASSERT (! unresolved_reloc);
2910 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2911 contents + rel->r_offset);
2912 }
2913 continue;
2914
2915 case R_390_TLS_LDO32:
2916 if (info->shared || (input_section->flags & SEC_CODE) == 0)
2917 relocation -= dtpoff_base (info);
2918 else
2919 /* When converting LDO to LE, we must negate. */
2920 relocation = -tpoff (info, relocation);
2921 break;
2922
2923 /* Relocations for tls instructions. */
2924 case R_390_TLS_LOAD:
2925 case R_390_TLS_GDCALL:
2926 case R_390_TLS_LDCALL:
2927 tls_type = GOT_UNKNOWN;
2928 if (h == NULL && local_got_offsets)
2929 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2930 else if (h != NULL)
2931 tls_type = elf_s390_hash_entry(h)->tls_type;
2932
2933 if (tls_type == GOT_TLS_GD)
2934 continue;
2935
2936 if (r_type == R_390_TLS_LOAD)
2937 {
2938 if (!info->shared && (h == NULL || h->dynindx == -1))
2939 {
2940 /* IE->LE transition. Four valid cases:
2941 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2942 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2943 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2944 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2945 unsigned int insn, ry;
2946
2947 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2948 ry = 0;
2949 if ((insn & 0xff00f000) == 0x58000000)
2950 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2951 ry = (insn & 0x000f0000);
2952 else if ((insn & 0xff0f0000) == 0x58000000)
2953 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2954 ry = (insn & 0x0000f000) << 4;
2955 else if ((insn & 0xff00f000) == 0x5800c000)
2956 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2957 ry = (insn & 0x000f0000);
2958 else if ((insn & 0xff0f0000) == 0x580c0000)
2959 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2960 ry = (insn & 0x0000f000) << 4;
2961 else
2962 invalid_tls_insn (input_bfd, input_section, rel);
2963 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2964 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2965 }
2966 }
2967 else if (r_type == R_390_TLS_GDCALL)
2968 {
2969 unsigned int insn;
2970
2971 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2972 if ((insn & 0xff000fff) != 0x4d000000)
2973 invalid_tls_insn (input_bfd, input_section, rel);
2974 if (!info->shared && (h == NULL || h->dynindx == -1))
2975 /* GD->LE transition.
2976 bas %r14,0(%rx,%r13) -> bc 0,0 */
2977 insn = 0x47000000;
2978 else
2979 /* GD->IE transition.
2980 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2981 insn = 0x5822c000;
2982 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2983 }
2984 else if (r_type == R_390_TLS_LDCALL)
2985 {
2986 if (!info->shared)
2987 {
2988 unsigned int insn;
2989
2990 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2991 if ((insn & 0xff000fff) != 0x4d000000)
2992 invalid_tls_insn (input_bfd, input_section, rel);
2993 /* LD->LE transition.
2994 bas %r14,0(%rx,%r13) -> bc 0,0 */
2995 insn = 0x47000000;
2996 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2997 }
2998 }
2999 continue;
3000
3001 default:
3002 break;
3003 }
3004
3005 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3006 because such sections are not SEC_ALLOC and thus ld.so will
3007 not process them. */
3008 if (unresolved_reloc
3009 && !((input_section->flags & SEC_DEBUGGING) != 0
3010 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3011 (*_bfd_error_handler)
3012 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3013 bfd_archive_filename (input_bfd),
3014 bfd_get_section_name (input_bfd, input_section),
3015 (long) rel->r_offset,
3016 h->root.root.string);
3017
3018 if (r_type == R_390_20
3019 || r_type == R_390_GOT20
3020 || r_type == R_390_GOTPLT20
3021 || r_type == R_390_TLS_GOTIE20)
3022 {
3023 relocation += rel->r_addend;
3024 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3025 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3026 contents, rel->r_offset,
3027 relocation, 0);
3028 }
3029 else
3030 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3031 contents, rel->r_offset,
3032 relocation, rel->r_addend);
3033
3034 if (r != bfd_reloc_ok)
3035 {
3036 const char *name;
3037
3038 if (h != NULL)
3039 name = h->root.root.string;
3040 else
3041 {
3042 name = bfd_elf_string_from_elf_section (input_bfd,
3043 symtab_hdr->sh_link,
3044 sym->st_name);
3045 if (name == NULL)
3046 return FALSE;
3047 if (*name == '\0')
3048 name = bfd_section_name (input_bfd, sec);
3049 }
3050
3051 if (r == bfd_reloc_overflow)
3052 {
3053
3054 if (! ((*info->callbacks->reloc_overflow)
3055 (info, name, howto->name, (bfd_vma) 0,
3056 input_bfd, input_section, rel->r_offset)))
3057 return FALSE;
3058 }
3059 else
3060 {
3061 (*_bfd_error_handler)
3062 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
3063 bfd_archive_filename (input_bfd),
3064 bfd_get_section_name (input_bfd, input_section),
3065 (long) rel->r_offset, name, (int) r);
3066 return FALSE;
3067 }
3068 }
3069 }
3070
3071 return TRUE;
3072 }
3073
3074 /* Finish up dynamic symbol handling. We set the contents of various
3075 dynamic sections here. */
3076
3077 static bfd_boolean
3078 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3079 bfd *output_bfd;
3080 struct bfd_link_info *info;
3081 struct elf_link_hash_entry *h;
3082 Elf_Internal_Sym *sym;
3083 {
3084 struct elf_s390_link_hash_table *htab;
3085
3086 htab = elf_s390_hash_table (info);
3087
3088 if (h->plt.offset != (bfd_vma) -1)
3089 {
3090 bfd_vma plt_index;
3091 bfd_vma got_offset;
3092 Elf_Internal_Rela rela;
3093 bfd_byte *loc;
3094 bfd_vma relative_offset;
3095
3096 /* This symbol has an entry in the procedure linkage table. Set
3097 it up. */
3098 if (h->dynindx == -1
3099 || htab->splt == NULL
3100 || htab->sgotplt == NULL
3101 || htab->srelplt == NULL)
3102 abort ();
3103
3104 /* Calc. index no.
3105 Current offset - size first entry / entry size. */
3106 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3107
3108 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3109 addr & GOT addr. */
3110 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3111
3112 /* S390 uses halfwords for relative branch calc! */
3113 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3114 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3115 /* If offset is > 32768, branch to a previous branch
3116 390 can only handle +-64 K jumps. */
3117 if ( -32768 > (int) relative_offset )
3118 relative_offset
3119 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3120
3121 /* Fill in the entry in the procedure linkage table. */
3122 if (!info->shared)
3123 {
3124 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3125 htab->splt->contents + h->plt.offset);
3126 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3127 htab->splt->contents + h->plt.offset + 4);
3128 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3129 htab->splt->contents + h->plt.offset + 8);
3130 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3131 htab->splt->contents + h->plt.offset + 12);
3132 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3133 htab->splt->contents + h->plt.offset + 16);
3134 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3135 htab->splt->contents + h->plt.offset + 20);
3136 bfd_put_32 (output_bfd,
3137 (htab->sgotplt->output_section->vma
3138 + htab->sgotplt->output_offset
3139 + got_offset),
3140 htab->splt->contents + h->plt.offset + 24);
3141 }
3142 else if (got_offset < 4096)
3143 {
3144 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3145 htab->splt->contents + h->plt.offset);
3146 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3147 htab->splt->contents + h->plt.offset + 4);
3148 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3149 htab->splt->contents + h->plt.offset + 8);
3150 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3151 htab->splt->contents + h->plt.offset + 12);
3152 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3153 htab->splt->contents + h->plt.offset + 16);
3154 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3155 htab->splt->contents + h->plt.offset + 20);
3156 bfd_put_32 (output_bfd, (bfd_vma) 0,
3157 htab->splt->contents + h->plt.offset + 24);
3158 }
3159 else if (got_offset < 32768)
3160 {
3161 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3162 htab->splt->contents + h->plt.offset);
3163 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3164 htab->splt->contents + h->plt.offset + 4);
3165 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3166 htab->splt->contents + h->plt.offset + 8);
3167 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3168 htab->splt->contents + h->plt.offset + 12);
3169 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3170 htab->splt->contents + h->plt.offset + 16);
3171 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3172 htab->splt->contents + h->plt.offset + 20);
3173 bfd_put_32 (output_bfd, (bfd_vma) 0,
3174 htab->splt->contents + h->plt.offset + 24);
3175 }
3176 else
3177 {
3178 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3179 htab->splt->contents + h->plt.offset);
3180 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3181 htab->splt->contents + h->plt.offset + 4);
3182 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3183 htab->splt->contents + h->plt.offset + 8);
3184 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3185 htab->splt->contents + h->plt.offset + 12);
3186 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3187 htab->splt->contents + h->plt.offset + 16);
3188 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3189 htab->splt->contents + h->plt.offset + 20);
3190 bfd_put_32 (output_bfd, got_offset,
3191 htab->splt->contents + h->plt.offset + 24);
3192 }
3193 /* Insert offset into reloc. table here. */
3194 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3195 htab->splt->contents + h->plt.offset + 28);
3196
3197 /* Fill in the entry in the global offset table.
3198 Points to instruction after GOT offset. */
3199 bfd_put_32 (output_bfd,
3200 (htab->splt->output_section->vma
3201 + htab->splt->output_offset
3202 + h->plt.offset
3203 + 12),
3204 htab->sgotplt->contents + got_offset);
3205
3206 /* Fill in the entry in the .rela.plt section. */
3207 rela.r_offset = (htab->sgotplt->output_section->vma
3208 + htab->sgotplt->output_offset
3209 + got_offset);
3210 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3211 rela.r_addend = 0;
3212 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3213 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3214
3215 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3216 {
3217 /* Mark the symbol as undefined, rather than as defined in
3218 the .plt section. Leave the value alone. This is a clue
3219 for the dynamic linker, to make function pointer
3220 comparisons work between an application and shared
3221 library. */
3222 sym->st_shndx = SHN_UNDEF;
3223 }
3224 }
3225
3226 if (h->got.offset != (bfd_vma) -1
3227 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3228 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3229 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3230 {
3231 Elf_Internal_Rela rela;
3232 bfd_byte *loc;
3233
3234 /* This symbol has an entry in the global offset table. Set it
3235 up. */
3236
3237 if (htab->sgot == NULL || htab->srelgot == NULL)
3238 abort ();
3239
3240 rela.r_offset = (htab->sgot->output_section->vma
3241 + htab->sgot->output_offset
3242 + (h->got.offset &~ (bfd_vma) 1));
3243
3244 /* If this is a static link, or it is a -Bsymbolic link and the
3245 symbol is defined locally or was forced to be local because
3246 of a version file, we just want to emit a RELATIVE reloc.
3247 The entry in the global offset table will already have been
3248 initialized in the relocate_section function. */
3249 if (info->shared
3250 && (info->symbolic
3251 || h->dynindx == -1
3252 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
3253 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3254 {
3255 BFD_ASSERT((h->got.offset & 1) != 0);
3256 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3257 rela.r_addend = (h->root.u.def.value
3258 + h->root.u.def.section->output_section->vma
3259 + h->root.u.def.section->output_offset);
3260 }
3261 else
3262 {
3263 BFD_ASSERT((h->got.offset & 1) == 0);
3264 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3265 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3266 rela.r_addend = 0;
3267 }
3268
3269 loc = htab->srelgot->contents;
3270 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3271 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3272 }
3273
3274 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3275 {
3276 Elf_Internal_Rela rela;
3277 bfd_byte *loc;
3278
3279 /* This symbols needs a copy reloc. Set it up. */
3280
3281 if (h->dynindx == -1
3282 || (h->root.type != bfd_link_hash_defined
3283 && h->root.type != bfd_link_hash_defweak)
3284 || htab->srelbss == NULL)
3285 abort ();
3286
3287 rela.r_offset = (h->root.u.def.value
3288 + h->root.u.def.section->output_section->vma
3289 + h->root.u.def.section->output_offset);
3290 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3291 rela.r_addend = 0;
3292 loc = htab->srelbss->contents;
3293 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3294 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3295 }
3296
3297 /* Mark some specially defined symbols as absolute. */
3298 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3299 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3300 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3301 sym->st_shndx = SHN_ABS;
3302
3303 return TRUE;
3304 }
3305
3306 /* Used to decide how to sort relocs in an optimal manner for the
3307 dynamic linker, before writing them out. */
3308
3309 static enum elf_reloc_type_class
3310 elf_s390_reloc_type_class (rela)
3311 const Elf_Internal_Rela *rela;
3312 {
3313 switch ((int) ELF32_R_TYPE (rela->r_info))
3314 {
3315 case R_390_RELATIVE:
3316 return reloc_class_relative;
3317 case R_390_JMP_SLOT:
3318 return reloc_class_plt;
3319 case R_390_COPY:
3320 return reloc_class_copy;
3321 default:
3322 return reloc_class_normal;
3323 }
3324 }
3325
3326 /* Finish up the dynamic sections. */
3327
3328 static bfd_boolean
3329 elf_s390_finish_dynamic_sections (output_bfd, info)
3330 bfd *output_bfd;
3331 struct bfd_link_info *info;
3332 {
3333 struct elf_s390_link_hash_table *htab;
3334 bfd *dynobj;
3335 asection *sdyn;
3336
3337 htab = elf_s390_hash_table (info);
3338 dynobj = htab->elf.dynobj;
3339 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3340
3341 if (htab->elf.dynamic_sections_created)
3342 {
3343 Elf32_External_Dyn *dyncon, *dynconend;
3344
3345 if (sdyn == NULL || htab->sgot == NULL)
3346 abort ();
3347
3348 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3349 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3350 for (; dyncon < dynconend; dyncon++)
3351 {
3352 Elf_Internal_Dyn dyn;
3353 asection *s;
3354
3355 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3356
3357 switch (dyn.d_tag)
3358 {
3359 default:
3360 continue;
3361
3362 case DT_PLTGOT:
3363 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3364 break;
3365
3366 case DT_JMPREL:
3367 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3368 break;
3369
3370 case DT_PLTRELSZ:
3371 s = htab->srelplt->output_section;
3372 if (s->_cooked_size != 0)
3373 dyn.d_un.d_val = s->_cooked_size;
3374 else
3375 dyn.d_un.d_val = s->_raw_size;
3376 break;
3377 }
3378
3379 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3380 }
3381
3382 /* Fill in the special first entry in the procedure linkage table. */
3383 if (htab->splt && htab->splt->_raw_size > 0)
3384 {
3385 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3386 if (info->shared)
3387 {
3388 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3389 htab->splt->contents );
3390 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3391 htab->splt->contents +4 );
3392 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3393 htab->splt->contents +8 );
3394 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3395 htab->splt->contents +12 );
3396 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3397 htab->splt->contents +16 );
3398 }
3399 else
3400 {
3401 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3402 htab->splt->contents );
3403 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3404 htab->splt->contents +4 );
3405 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3406 htab->splt->contents +8 );
3407 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3408 htab->splt->contents +12 );
3409 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3410 htab->splt->contents +16 );
3411 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3412 htab->splt->contents +20 );
3413 bfd_put_32 (output_bfd,
3414 htab->sgotplt->output_section->vma
3415 + htab->sgotplt->output_offset,
3416 htab->splt->contents + 24);
3417 }
3418 elf_section_data (htab->splt->output_section)
3419 ->this_hdr.sh_entsize = 4;
3420 }
3421
3422 }
3423
3424 if (htab->sgotplt)
3425 {
3426 /* Fill in the first three entries in the global offset table. */
3427 if (htab->sgotplt->_raw_size > 0)
3428 {
3429 bfd_put_32 (output_bfd,
3430 (sdyn == NULL ? (bfd_vma) 0
3431 : sdyn->output_section->vma + sdyn->output_offset),
3432 htab->sgotplt->contents);
3433 /* One entry for shared object struct ptr. */
3434 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3435 /* One entry for _dl_runtime_resolve. */
3436 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3437 }
3438
3439 elf_section_data (htab->sgotplt->output_section)
3440 ->this_hdr.sh_entsize = 4;
3441 }
3442 return TRUE;
3443 }
3444
3445 static bfd_boolean
3446 elf_s390_grok_prstatus (abfd, note)
3447 bfd * abfd;
3448 Elf_Internal_Note * note;
3449 {
3450 int offset;
3451 unsigned int raw_size;
3452
3453 switch (note->descsz)
3454 {
3455 default:
3456 return FALSE;
3457
3458 case 224: /* S/390 Linux. */
3459 /* pr_cursig */
3460 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3461
3462 /* pr_pid */
3463 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3464
3465 /* pr_reg */
3466 offset = 72;
3467 raw_size = 144;
3468 break;
3469 }
3470
3471 /* Make a ".reg/999" section. */
3472 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3473 raw_size, note->descpos + offset);
3474 }
3475
3476 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3477 #define TARGET_BIG_NAME "elf32-s390"
3478 #define ELF_ARCH bfd_arch_s390
3479 #define ELF_MACHINE_CODE EM_S390
3480 #define ELF_MACHINE_ALT1 EM_S390_OLD
3481 #define ELF_MAXPAGESIZE 0x1000
3482
3483 #define elf_backend_can_gc_sections 1
3484 #define elf_backend_can_refcount 1
3485 #define elf_backend_want_got_plt 1
3486 #define elf_backend_plt_readonly 1
3487 #define elf_backend_want_plt_sym 0
3488 #define elf_backend_got_header_size 12
3489 #define elf_backend_rela_normal 1
3490
3491 #define elf_info_to_howto elf_s390_info_to_howto
3492
3493 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3494 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3495 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3496
3497 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3498 #define elf_backend_check_relocs elf_s390_check_relocs
3499 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3500 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3501 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3502 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3503 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3504 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3505 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3506 #define elf_backend_relocate_section elf_s390_relocate_section
3507 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3508 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3509 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3510
3511 #define bfd_elf32_mkobject elf_s390_mkobject
3512 #define elf_backend_object_p elf_s390_object_p
3513
3514 #include "elf32-target.h"
GDB Binutils - Deliverables
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