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* elf-bfd.h (RELOC_FOR_GLOBAL_SYMBOL): Add input_bfd, input_section
[binutils.git] / bfd / elf32-s390.c
blobbb88dff781f0c0a1ff36ae6965e29e1ae3a5860a
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004 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 (SYMBOL_REFERENCES_LOCAL (info, h))
1888 {
1889 struct elf_s390_dyn_relocs **pp;
1890
1891 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1892 {
1893 p->count -= p->pc_count;
1894 p->pc_count = 0;
1895 if (p->count == 0)
1896 *pp = p->next;
1897 else
1898 pp = &p->next;
1899 }
1900 }
1901
1902 /* Also discard relocs on undefined weak syms with non-default
1903 visibility. */
1904 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1905 && h->root.type == bfd_link_hash_undefweak)
1906 eh->dyn_relocs = NULL;
1907 }
1908 else if (ELIMINATE_COPY_RELOCS)
1909 {
1910 /* For the non-shared case, discard space for relocs against
1911 symbols which turn out to need copy relocs or are not
1912 dynamic. */
1913
1914 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1915 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1916 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1917 || (htab->elf.dynamic_sections_created
1918 && (h->root.type == bfd_link_hash_undefweak
1919 || h->root.type == bfd_link_hash_undefined))))
1920 {
1921 /* Make sure this symbol is output as a dynamic symbol.
1922 Undefined weak syms won't yet be marked as dynamic. */
1923 if (h->dynindx == -1
1924 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1925 {
1926 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1927 return FALSE;
1928 }
1929
1930 /* If that succeeded, we know we'll be keeping all the
1931 relocs. */
1932 if (h->dynindx != -1)
1933 goto keep;
1934 }
1935
1936 eh->dyn_relocs = NULL;
1937
1938 keep: ;
1939 }
1940
1941 /* Finally, allocate space. */
1942 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1943 {
1944 asection *sreloc = elf_section_data (p->sec)->sreloc;
1945
1946 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
1947 }
1948
1949 return TRUE;
1950 }
1951
1952 /* Find any dynamic relocs that apply to read-only sections. */
1953
1954 static bfd_boolean
1955 readonly_dynrelocs (h, inf)
1956 struct elf_link_hash_entry *h;
1957 PTR inf;
1958 {
1959 struct elf_s390_link_hash_entry *eh;
1960 struct elf_s390_dyn_relocs *p;
1961
1962 if (h->root.type == bfd_link_hash_warning)
1963 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1964
1965 eh = (struct elf_s390_link_hash_entry *) h;
1966 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1967 {
1968 asection *s = p->sec->output_section;
1969
1970 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1971 {
1972 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1973
1974 info->flags |= DF_TEXTREL;
1975
1976 /* Not an error, just cut short the traversal. */
1977 return FALSE;
1978 }
1979 }
1980 return TRUE;
1981 }
1982
1983 /* Set the sizes of the dynamic sections. */
1984
1985 static bfd_boolean
1986 elf_s390_size_dynamic_sections (output_bfd, info)
1987 bfd *output_bfd ATTRIBUTE_UNUSED;
1988 struct bfd_link_info *info;
1989 {
1990 struct elf_s390_link_hash_table *htab;
1991 bfd *dynobj;
1992 asection *s;
1993 bfd_boolean relocs;
1994 bfd *ibfd;
1995
1996 htab = elf_s390_hash_table (info);
1997 dynobj = htab->elf.dynobj;
1998 if (dynobj == NULL)
1999 abort ();
2000
2001 if (htab->elf.dynamic_sections_created)
2002 {
2003 /* Set the contents of the .interp section to the interpreter. */
2004 if (info->executable)
2005 {
2006 s = bfd_get_section_by_name (dynobj, ".interp");
2007 if (s == NULL)
2008 abort ();
2009 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2010 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2011 }
2012 }
2013
2014 /* Set up .got offsets for local syms, and space for local dynamic
2015 relocs. */
2016 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2017 {
2018 bfd_signed_vma *local_got;
2019 bfd_signed_vma *end_local_got;
2020 char *local_tls_type;
2021 bfd_size_type locsymcount;
2022 Elf_Internal_Shdr *symtab_hdr;
2023 asection *srela;
2024
2025 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2026 continue;
2027
2028 for (s = ibfd->sections; s != NULL; s = s->next)
2029 {
2030 struct elf_s390_dyn_relocs *p;
2031
2032 for (p = *((struct elf_s390_dyn_relocs **)
2033 &elf_section_data (s)->local_dynrel);
2034 p != NULL;
2035 p = p->next)
2036 {
2037 if (!bfd_is_abs_section (p->sec)
2038 && bfd_is_abs_section (p->sec->output_section))
2039 {
2040 /* Input section has been discarded, either because
2041 it is a copy of a linkonce section or due to
2042 linker script /DISCARD/, so we'll be discarding
2043 the relocs too. */
2044 }
2045 else if (p->count != 0)
2046 {
2047 srela = elf_section_data (p->sec)->sreloc;
2048 srela->_raw_size += p->count * sizeof (Elf32_External_Rela);
2049 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2050 info->flags |= DF_TEXTREL;
2051 }
2052 }
2053 }
2054
2055 local_got = elf_local_got_refcounts (ibfd);
2056 if (!local_got)
2057 continue;
2058
2059 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2060 locsymcount = symtab_hdr->sh_info;
2061 end_local_got = local_got + locsymcount;
2062 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2063 s = htab->sgot;
2064 srela = htab->srelgot;
2065 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2066 {
2067 if (*local_got > 0)
2068 {
2069 *local_got = s->_raw_size;
2070 s->_raw_size += GOT_ENTRY_SIZE;
2071 if (*local_tls_type == GOT_TLS_GD)
2072 s->_raw_size += GOT_ENTRY_SIZE;
2073 if (info->shared)
2074 srela->_raw_size += sizeof (Elf32_External_Rela);
2075 }
2076 else
2077 *local_got = (bfd_vma) -1;
2078 }
2079 }
2080
2081 if (htab->tls_ldm_got.refcount > 0)
2082 {
2083 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2084 relocs. */
2085 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
2086 htab->sgot->_raw_size += 2 * GOT_ENTRY_SIZE;
2087 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
2088 }
2089 else
2090 htab->tls_ldm_got.offset = -1;
2091
2092 /* Allocate global sym .plt and .got entries, and space for global
2093 sym dynamic relocs. */
2094 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2095
2096 /* We now have determined the sizes of the various dynamic sections.
2097 Allocate memory for them. */
2098 relocs = FALSE;
2099 for (s = dynobj->sections; s != NULL; s = s->next)
2100 {
2101 if ((s->flags & SEC_LINKER_CREATED) == 0)
2102 continue;
2103
2104 if (s == htab->splt
2105 || s == htab->sgot
2106 || s == htab->sgotplt)
2107 {
2108 /* Strip this section if we don't need it; see the
2109 comment below. */
2110 }
2111 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2112 {
2113 if (s->_raw_size != 0)
2114 relocs = TRUE;
2115
2116 /* We use the reloc_count field as a counter if we need
2117 to copy relocs into the output file. */
2118 s->reloc_count = 0;
2119 }
2120 else
2121 {
2122 /* It's not one of our sections, so don't allocate space. */
2123 continue;
2124 }
2125
2126 if (s->_raw_size == 0)
2127 {
2128 /* If we don't need this section, strip it from the
2129 output file. This is to handle .rela.bss and
2130 .rela.plt. We must create it in
2131 create_dynamic_sections, because it must be created
2132 before the linker maps input sections to output
2133 sections. The linker does that before
2134 adjust_dynamic_symbol is called, and it is that
2135 function which decides whether anything needs to go
2136 into these sections. */
2137
2138 _bfd_strip_section_from_output (info, s);
2139 continue;
2140 }
2141
2142 /* Allocate memory for the section contents. We use bfd_zalloc
2143 here in case unused entries are not reclaimed before the
2144 section's contents are written out. This should not happen,
2145 but this way if it does, we get a R_390_NONE reloc instead
2146 of garbage. */
2147 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2148 if (s->contents == NULL)
2149 return FALSE;
2150 }
2151
2152 if (htab->elf.dynamic_sections_created)
2153 {
2154 /* Add some entries to the .dynamic section. We fill in the
2155 values later, in elf_s390_finish_dynamic_sections, but we
2156 must add the entries now so that we get the correct size for
2157 the .dynamic section. The DT_DEBUG entry is filled in by the
2158 dynamic linker and used by the debugger. */
2159 #define add_dynamic_entry(TAG, VAL) \
2160 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2161
2162 if (info->executable)
2163 {
2164 if (!add_dynamic_entry (DT_DEBUG, 0))
2165 return FALSE;
2166 }
2167
2168 if (htab->splt->_raw_size != 0)
2169 {
2170 if (!add_dynamic_entry (DT_PLTGOT, 0)
2171 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2172 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2173 || !add_dynamic_entry (DT_JMPREL, 0))
2174 return FALSE;
2175 }
2176
2177 if (relocs)
2178 {
2179 if (!add_dynamic_entry (DT_RELA, 0)
2180 || !add_dynamic_entry (DT_RELASZ, 0)
2181 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2182 return FALSE;
2183
2184 /* If any dynamic relocs apply to a read-only section,
2185 then we need a DT_TEXTREL entry. */
2186 if ((info->flags & DF_TEXTREL) == 0)
2187 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2188 (PTR) info);
2189
2190 if ((info->flags & DF_TEXTREL) != 0)
2191 {
2192 if (!add_dynamic_entry (DT_TEXTREL, 0))
2193 return FALSE;
2194 }
2195 }
2196 }
2197 #undef add_dynamic_entry
2198
2199 return TRUE;
2200 }
2201
2202 /* Return the base VMA address which should be subtracted from real addresses
2203 when resolving @dtpoff relocation.
2204 This is PT_TLS segment p_vaddr. */
2205
2206 static bfd_vma
2207 dtpoff_base (info)
2208 struct bfd_link_info *info;
2209 {
2210 /* If tls_sec is NULL, we should have signalled an error already. */
2211 if (elf_hash_table (info)->tls_sec == NULL)
2212 return 0;
2213 return elf_hash_table (info)->tls_sec->vma;
2214 }
2215
2216 /* Return the relocation value for @tpoff relocation
2217 if STT_TLS virtual address is ADDRESS. */
2218
2219 static bfd_vma
2220 tpoff (info, address)
2221 struct bfd_link_info *info;
2222 bfd_vma address;
2223 {
2224 struct elf_link_hash_table *htab = elf_hash_table (info);
2225
2226 /* If tls_sec is NULL, we should have signalled an error already. */
2227 if (htab->tls_sec == NULL)
2228 return 0;
2229 return htab->tls_size + htab->tls_sec->vma - address;
2230 }
2231
2232 /* Complain if TLS instruction relocation is against an invalid
2233 instruction. */
2234
2235 static void
2236 invalid_tls_insn (input_bfd, input_section, rel)
2237 bfd *input_bfd;
2238 asection *input_section;
2239 Elf_Internal_Rela *rel;
2240 {
2241 reloc_howto_type *howto;
2242
2243 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2244 (*_bfd_error_handler)
2245 (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"),
2246 bfd_archive_filename (input_bfd),
2247 bfd_get_section_name (input_bfd, input_section),
2248 (long) rel->r_offset,
2249 howto->name);
2250 }
2251
2252 /* Relocate a 390 ELF section. */
2253
2254 static bfd_boolean
2255 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2256 contents, relocs, local_syms, local_sections)
2257 bfd *output_bfd;
2258 struct bfd_link_info *info;
2259 bfd *input_bfd;
2260 asection *input_section;
2261 bfd_byte *contents;
2262 Elf_Internal_Rela *relocs;
2263 Elf_Internal_Sym *local_syms;
2264 asection **local_sections;
2265 {
2266 struct elf_s390_link_hash_table *htab;
2267 Elf_Internal_Shdr *symtab_hdr;
2268 struct elf_link_hash_entry **sym_hashes;
2269 bfd_vma *local_got_offsets;
2270 Elf_Internal_Rela *rel;
2271 Elf_Internal_Rela *relend;
2272
2273 if (info->relocatable)
2274 return TRUE;
2275
2276 htab = elf_s390_hash_table (info);
2277 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2278 sym_hashes = elf_sym_hashes (input_bfd);
2279 local_got_offsets = elf_local_got_offsets (input_bfd);
2280
2281 rel = relocs;
2282 relend = relocs + input_section->reloc_count;
2283 for (; rel < relend; rel++)
2284 {
2285 unsigned int r_type;
2286 reloc_howto_type *howto;
2287 unsigned long r_symndx;
2288 struct elf_link_hash_entry *h;
2289 Elf_Internal_Sym *sym;
2290 asection *sec;
2291 bfd_vma off;
2292 bfd_vma relocation;
2293 bfd_boolean unresolved_reloc;
2294 bfd_reloc_status_type r;
2295 int tls_type;
2296
2297 r_type = ELF32_R_TYPE (rel->r_info);
2298 if (r_type == (int) R_390_GNU_VTINHERIT
2299 || r_type == (int) R_390_GNU_VTENTRY)
2300 continue;
2301 if (r_type >= (int) R_390_max)
2302 {
2303 bfd_set_error (bfd_error_bad_value);
2304 return FALSE;
2305 }
2306
2307 howto = elf_howto_table + r_type;
2308 r_symndx = ELF32_R_SYM (rel->r_info);
2309
2310 /* This is a final link. */
2311 h = NULL;
2312 sym = NULL;
2313 sec = NULL;
2314 unresolved_reloc = FALSE;
2315 if (r_symndx < symtab_hdr->sh_info)
2316 {
2317 sym = local_syms + r_symndx;
2318 sec = local_sections[r_symndx];
2319 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2320 }
2321 else
2322 {
2323 bfd_boolean warned ATTRIBUTE_UNUSED;
2324
2325 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2326 r_symndx, symtab_hdr, sym_hashes,
2327 h, sec, relocation,
2328 unresolved_reloc, warned);
2329 }
2330
2331 switch (r_type)
2332 {
2333 case R_390_GOTPLT12:
2334 case R_390_GOTPLT16:
2335 case R_390_GOTPLT20:
2336 case R_390_GOTPLT32:
2337 case R_390_GOTPLTENT:
2338 /* There are three cases for a GOTPLT relocation. 1) The
2339 relocation is against the jump slot entry of a plt that
2340 will get emitted to the output file. 2) The relocation
2341 is against the jump slot of a plt entry that has been
2342 removed. elf_s390_adjust_gotplt has created a GOT entry
2343 as replacement. 3) The relocation is against a local symbol.
2344 Cases 2) and 3) are the same as the GOT relocation code
2345 so we just have to test for case 1 and fall through for
2346 the other two. */
2347 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2348 {
2349 bfd_vma plt_index;
2350
2351 /* Calc. index no.
2352 Current offset - size first entry / entry size. */
2353 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2354 PLT_ENTRY_SIZE;
2355
2356 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2357 addr & GOT addr. */
2358 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2359 unresolved_reloc = FALSE;
2360
2361 if (r_type == R_390_GOTPLTENT)
2362 relocation += htab->sgot->output_section->vma;
2363 break;
2364 }
2365 /* Fall through. */
2366
2367 case R_390_GOT12:
2368 case R_390_GOT16:
2369 case R_390_GOT20:
2370 case R_390_GOT32:
2371 case R_390_GOTENT:
2372 /* Relocation is to the entry for this symbol in the global
2373 offset table. */
2374 if (htab->sgot == NULL)
2375 abort ();
2376
2377 if (h != NULL)
2378 {
2379 bfd_boolean dyn;
2380
2381 off = h->got.offset;
2382 dyn = htab->elf.dynamic_sections_created;
2383 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2384 || (info->shared
2385 && (info->symbolic
2386 || h->dynindx == -1
2387 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2388 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
2389 || (ELF_ST_VISIBILITY (h->other)
2390 && h->root.type == bfd_link_hash_undefweak))
2391 {
2392 /* This is actually a static link, or it is a
2393 -Bsymbolic link and the symbol is defined
2394 locally, or the symbol was forced to be local
2395 because of a version file. We must initialize
2396 this entry in the global offset table. Since the
2397 offset must always be a multiple of 2, we use the
2398 least significant bit to record whether we have
2399 initialized it already.
2400
2401 When doing a dynamic link, we create a .rel.got
2402 relocation entry to initialize the value. This
2403 is done in the finish_dynamic_symbol routine. */
2404 if ((off & 1) != 0)
2405 off &= ~1;
2406 else
2407 {
2408 bfd_put_32 (output_bfd, relocation,
2409 htab->sgot->contents + off);
2410 h->got.offset |= 1;
2411 }
2412 }
2413 else
2414 unresolved_reloc = FALSE;
2415 }
2416 else
2417 {
2418 if (local_got_offsets == NULL)
2419 abort ();
2420
2421 off = local_got_offsets[r_symndx];
2422
2423 /* The offset must always be a multiple of 4. We use
2424 the least significant bit to record whether we have
2425 already generated the necessary reloc. */
2426 if ((off & 1) != 0)
2427 off &= ~1;
2428 else
2429 {
2430 bfd_put_32 (output_bfd, relocation,
2431 htab->sgot->contents + off);
2432
2433 if (info->shared)
2434 {
2435 asection *srelgot;
2436 Elf_Internal_Rela outrel;
2437 bfd_byte *loc;
2438
2439 srelgot = htab->srelgot;
2440 if (srelgot == NULL)
2441 abort ();
2442
2443 outrel.r_offset = (htab->sgot->output_section->vma
2444 + htab->sgot->output_offset
2445 + off);
2446 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2447 outrel.r_addend = relocation;
2448 loc = srelgot->contents;
2449 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2450 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2451 }
2452
2453 local_got_offsets[r_symndx] |= 1;
2454 }
2455 }
2456
2457 if (off >= (bfd_vma) -2)
2458 abort ();
2459
2460 relocation = htab->sgot->output_offset + off;
2461
2462 /* For @GOTENT the relocation is against the offset between
2463 the instruction and the symbols entry in the GOT and not
2464 between the start of the GOT and the symbols entry. We
2465 add the vma of the GOT to get the correct value. */
2466 if ( r_type == R_390_GOTENT
2467 || r_type == R_390_GOTPLTENT)
2468 relocation += htab->sgot->output_section->vma;
2469
2470 break;
2471
2472 case R_390_GOTOFF16:
2473 case R_390_GOTOFF32:
2474 /* Relocation is relative to the start of the global offset
2475 table. */
2476
2477 /* Note that sgot->output_offset is not involved in this
2478 calculation. We always want the start of .got. If we
2479 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2480 permitted by the ABI, we might have to change this
2481 calculation. */
2482 relocation -= htab->sgot->output_section->vma;
2483 break;
2484
2485 case R_390_GOTPC:
2486 case R_390_GOTPCDBL:
2487 /* Use global offset table as symbol value. */
2488 relocation = htab->sgot->output_section->vma;
2489 unresolved_reloc = FALSE;
2490 break;
2491
2492 case R_390_PLT16DBL:
2493 case R_390_PLT32DBL:
2494 case R_390_PLT32:
2495 /* Relocation is to the entry for this symbol in the
2496 procedure linkage table. */
2497
2498 /* Resolve a PLT32 reloc against a local symbol directly,
2499 without using the procedure linkage table. */
2500 if (h == NULL)
2501 break;
2502
2503 if (h->plt.offset == (bfd_vma) -1
2504 || htab->splt == NULL)
2505 {
2506 /* We didn't make a PLT entry for this symbol. This
2507 happens when statically linking PIC code, or when
2508 using -Bsymbolic. */
2509 break;
2510 }
2511
2512 relocation = (htab->splt->output_section->vma
2513 + htab->splt->output_offset
2514 + h->plt.offset);
2515 unresolved_reloc = FALSE;
2516 break;
2517
2518 case R_390_PLTOFF16:
2519 case R_390_PLTOFF32:
2520 /* Relocation is to the entry for this symbol in the
2521 procedure linkage table relative to the start of the GOT. */
2522
2523 /* For local symbols or if we didn't make a PLT entry for
2524 this symbol resolve the symbol directly. */
2525 if ( h == NULL
2526 || h->plt.offset == (bfd_vma) -1
2527 || htab->splt == NULL)
2528 {
2529 relocation -= htab->sgot->output_section->vma;
2530 break;
2531 }
2532
2533 relocation = (htab->splt->output_section->vma
2534 + htab->splt->output_offset
2535 + h->plt.offset
2536 - htab->sgot->output_section->vma);
2537 unresolved_reloc = FALSE;
2538 break;
2539
2540 case R_390_8:
2541 case R_390_16:
2542 case R_390_32:
2543 case R_390_PC16:
2544 case R_390_PC16DBL:
2545 case R_390_PC32DBL:
2546 case R_390_PC32:
2547 /* r_symndx will be zero only for relocs against symbols
2548 from removed linkonce sections, or sections discarded by
2549 a linker script. */
2550 if (r_symndx == 0
2551 || (input_section->flags & SEC_ALLOC) == 0)
2552 break;
2553
2554 if ((info->shared
2555 && (h == NULL
2556 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2557 || h->root.type != bfd_link_hash_undefweak)
2558 && ((r_type != R_390_PC16
2559 && r_type != R_390_PC16DBL
2560 && r_type != R_390_PC32DBL
2561 && r_type != R_390_PC32)
2562 || (h != NULL
2563 && !SYMBOL_REFERENCES_LOCAL (info, h))))
2564 || (ELIMINATE_COPY_RELOCS
2565 && !info->shared
2566 && h != NULL
2567 && h->dynindx != -1
2568 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2569 && (((h->elf_link_hash_flags
2570 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2571 && (h->elf_link_hash_flags
2572 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2573 || h->root.type == bfd_link_hash_undefweak
2574 || h->root.type == bfd_link_hash_undefined)))
2575 {
2576 Elf_Internal_Rela outrel;
2577 bfd_boolean skip, relocate;
2578 asection *sreloc;
2579 bfd_byte *loc;
2580
2581 /* When generating a shared object, these relocations
2582 are copied into the output file to be resolved at run
2583 time. */
2584
2585 skip = FALSE;
2586 relocate = FALSE;
2587
2588 outrel.r_offset =
2589 _bfd_elf_section_offset (output_bfd, info, input_section,
2590 rel->r_offset);
2591 if (outrel.r_offset == (bfd_vma) -1)
2592 skip = TRUE;
2593 else if (outrel.r_offset == (bfd_vma) -2)
2594 skip = TRUE, relocate = TRUE;
2595 outrel.r_offset += (input_section->output_section->vma
2596 + input_section->output_offset);
2597
2598 if (skip)
2599 memset (&outrel, 0, sizeof outrel);
2600 else if (h != NULL
2601 && h->dynindx != -1
2602 && (r_type == R_390_PC16
2603 || r_type == R_390_PC16DBL
2604 || r_type == R_390_PC32DBL
2605 || r_type == R_390_PC32
2606 || !info->shared
2607 || !info->symbolic
2608 || (h->elf_link_hash_flags
2609 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2610 {
2611 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2612 outrel.r_addend = rel->r_addend;
2613 }
2614 else
2615 {
2616 /* This symbol is local, or marked to become local. */
2617 outrel.r_addend = relocation + rel->r_addend;
2618 if (r_type == R_390_32)
2619 {
2620 relocate = TRUE;
2621 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2622 }
2623 else
2624 {
2625 long sindx;
2626
2627 if (bfd_is_abs_section (sec))
2628 sindx = 0;
2629 else if (sec == NULL || sec->owner == NULL)
2630 {
2631 bfd_set_error(bfd_error_bad_value);
2632 return FALSE;
2633 }
2634 else
2635 {
2636 asection *osec;
2637
2638 osec = sec->output_section;
2639 sindx = elf_section_data (osec)->dynindx;
2640 BFD_ASSERT (sindx > 0);
2641
2642 /* We are turning this relocation into one
2643 against a section symbol, so subtract out
2644 the output section's address but not the
2645 offset of the input section in the output
2646 section. */
2647
2648 outrel.r_addend -= osec->vma;
2649 }
2650 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2651 }
2652 }
2653
2654 sreloc = elf_section_data (input_section)->sreloc;
2655 if (sreloc == NULL)
2656 abort ();
2657
2658 loc = sreloc->contents;
2659 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2660 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2661
2662 /* If this reloc is against an external symbol, we do
2663 not want to fiddle with the addend. Otherwise, we
2664 need to include the symbol value so that it becomes
2665 an addend for the dynamic reloc. */
2666 if (! relocate)
2667 continue;
2668 }
2669 break;
2670
2671 /* Relocations for tls literal pool entries. */
2672 case R_390_TLS_IE32:
2673 if (info->shared)
2674 {
2675 Elf_Internal_Rela outrel;
2676 asection *sreloc;
2677 bfd_byte *loc;
2678
2679 outrel.r_offset = rel->r_offset
2680 + input_section->output_section->vma
2681 + input_section->output_offset;
2682 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2683 sreloc = elf_section_data (input_section)->sreloc;
2684 if (sreloc == NULL)
2685 abort ();
2686 loc = sreloc->contents;
2687 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2688 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2689 }
2690 /* Fall through. */
2691
2692 case R_390_TLS_GD32:
2693 case R_390_TLS_GOTIE32:
2694 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2695 tls_type = GOT_UNKNOWN;
2696 if (h == NULL && local_got_offsets)
2697 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2698 else if (h != NULL)
2699 {
2700 tls_type = elf_s390_hash_entry(h)->tls_type;
2701 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2702 r_type = R_390_TLS_LE32;
2703 }
2704 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2705 r_type = R_390_TLS_IE32;
2706
2707 if (r_type == R_390_TLS_LE32)
2708 {
2709 /* This relocation gets optimized away by the local exec
2710 access optimization. */
2711 BFD_ASSERT (! unresolved_reloc);
2712 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2713 contents + rel->r_offset);
2714 continue;
2715 }
2716
2717 if (htab->sgot == NULL)
2718 abort ();
2719
2720 if (h != NULL)
2721 off = h->got.offset;
2722 else
2723 {
2724 if (local_got_offsets == NULL)
2725 abort ();
2726
2727 off = local_got_offsets[r_symndx];
2728 }
2729
2730 emit_tls_relocs:
2731
2732 if ((off & 1) != 0)
2733 off &= ~1;
2734 else
2735 {
2736 Elf_Internal_Rela outrel;
2737 bfd_byte *loc;
2738 int dr_type, indx;
2739
2740 if (htab->srelgot == NULL)
2741 abort ();
2742
2743 outrel.r_offset = (htab->sgot->output_section->vma
2744 + htab->sgot->output_offset + off);
2745
2746 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2747 if (r_type == R_390_TLS_GD32)
2748 dr_type = R_390_TLS_DTPMOD;
2749 else
2750 dr_type = R_390_TLS_TPOFF;
2751 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2752 outrel.r_addend = relocation - dtpoff_base (info);
2753 else
2754 outrel.r_addend = 0;
2755 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2756 loc = htab->srelgot->contents;
2757 loc += htab->srelgot->reloc_count++
2758 * sizeof (Elf32_External_Rela);
2759 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2760
2761 if (r_type == R_390_TLS_GD32)
2762 {
2763 if (indx == 0)
2764 {
2765 BFD_ASSERT (! unresolved_reloc);
2766 bfd_put_32 (output_bfd,
2767 relocation - dtpoff_base (info),
2768 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2769 }
2770 else
2771 {
2772 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2773 outrel.r_offset += GOT_ENTRY_SIZE;
2774 outrel.r_addend = 0;
2775 htab->srelgot->reloc_count++;
2776 loc += sizeof (Elf32_External_Rela);
2777 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2778 }
2779 }
2780
2781 if (h != NULL)
2782 h->got.offset |= 1;
2783 else
2784 local_got_offsets[r_symndx] |= 1;
2785 }
2786
2787 if (off >= (bfd_vma) -2)
2788 abort ();
2789 if (r_type == ELF32_R_TYPE (rel->r_info))
2790 {
2791 relocation = htab->sgot->output_offset + off;
2792 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2793 relocation += htab->sgot->output_section->vma;
2794 unresolved_reloc = FALSE;
2795 }
2796 else
2797 {
2798 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2799 contents + rel->r_offset);
2800 continue;
2801 }
2802 break;
2803
2804 case R_390_TLS_GOTIE12:
2805 case R_390_TLS_GOTIE20:
2806 case R_390_TLS_IEENT:
2807 if (h == NULL)
2808 {
2809 if (local_got_offsets == NULL)
2810 abort();
2811 off = local_got_offsets[r_symndx];
2812 if (info->shared)
2813 goto emit_tls_relocs;
2814 }
2815 else
2816 {
2817 off = h->got.offset;
2818 tls_type = elf_s390_hash_entry(h)->tls_type;
2819 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2820 goto emit_tls_relocs;
2821 }
2822
2823 if (htab->sgot == NULL)
2824 abort ();
2825
2826 BFD_ASSERT (! unresolved_reloc);
2827 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2828 htab->sgot->contents + off);
2829 relocation = htab->sgot->output_offset + off;
2830 if (r_type == R_390_TLS_IEENT)
2831 relocation += htab->sgot->output_section->vma;
2832 unresolved_reloc = FALSE;
2833 break;
2834
2835 case R_390_TLS_LDM32:
2836 if (! info->shared)
2837 /* The literal pool entry this relocation refers to gets ignored
2838 by the optimized code of the local exec model. Do nothing
2839 and the value will turn out zero. */
2840 continue;
2841
2842 if (htab->sgot == NULL)
2843 abort ();
2844
2845 off = htab->tls_ldm_got.offset;
2846 if (off & 1)
2847 off &= ~1;
2848 else
2849 {
2850 Elf_Internal_Rela outrel;
2851 bfd_byte *loc;
2852
2853 if (htab->srelgot == NULL)
2854 abort ();
2855
2856 outrel.r_offset = (htab->sgot->output_section->vma
2857 + htab->sgot->output_offset + off);
2858
2859 bfd_put_32 (output_bfd, 0,
2860 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2861 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2862 outrel.r_addend = 0;
2863 loc = htab->srelgot->contents;
2864 loc += htab->srelgot->reloc_count++
2865 * sizeof (Elf32_External_Rela);
2866 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2867 htab->tls_ldm_got.offset |= 1;
2868 }
2869 relocation = htab->sgot->output_offset + off;
2870 unresolved_reloc = FALSE;
2871 break;
2872
2873 case R_390_TLS_LE32:
2874 if (info->shared)
2875 {
2876 /* Linking a shared library with non-fpic code requires
2877 a R_390_TLS_TPOFF relocation. */
2878 Elf_Internal_Rela outrel;
2879 asection *sreloc;
2880 bfd_byte *loc;
2881 int indx;
2882
2883 outrel.r_offset = rel->r_offset
2884 + input_section->output_section->vma
2885 + input_section->output_offset;
2886 if (h != NULL && h->dynindx != -1)
2887 indx = h->dynindx;
2888 else
2889 indx = 0;
2890 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2891 if (indx == 0)
2892 outrel.r_addend = relocation - dtpoff_base (info);
2893 else
2894 outrel.r_addend = 0;
2895 sreloc = elf_section_data (input_section)->sreloc;
2896 if (sreloc == NULL)
2897 abort ();
2898 loc = sreloc->contents;
2899 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2900 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2901 }
2902 else
2903 {
2904 BFD_ASSERT (! unresolved_reloc);
2905 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2906 contents + rel->r_offset);
2907 }
2908 continue;
2909
2910 case R_390_TLS_LDO32:
2911 if (info->shared || (input_section->flags & SEC_CODE) == 0)
2912 relocation -= dtpoff_base (info);
2913 else
2914 /* When converting LDO to LE, we must negate. */
2915 relocation = -tpoff (info, relocation);
2916 break;
2917
2918 /* Relocations for tls instructions. */
2919 case R_390_TLS_LOAD:
2920 case R_390_TLS_GDCALL:
2921 case R_390_TLS_LDCALL:
2922 tls_type = GOT_UNKNOWN;
2923 if (h == NULL && local_got_offsets)
2924 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2925 else if (h != NULL)
2926 tls_type = elf_s390_hash_entry(h)->tls_type;
2927
2928 if (tls_type == GOT_TLS_GD)
2929 continue;
2930
2931 if (r_type == R_390_TLS_LOAD)
2932 {
2933 if (!info->shared && (h == NULL || h->dynindx == -1))
2934 {
2935 /* IE->LE transition. Four valid cases:
2936 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2937 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2938 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2939 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2940 unsigned int insn, ry;
2941
2942 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2943 ry = 0;
2944 if ((insn & 0xff00f000) == 0x58000000)
2945 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2946 ry = (insn & 0x000f0000);
2947 else if ((insn & 0xff0f0000) == 0x58000000)
2948 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2949 ry = (insn & 0x0000f000) << 4;
2950 else if ((insn & 0xff00f000) == 0x5800c000)
2951 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2952 ry = (insn & 0x000f0000);
2953 else if ((insn & 0xff0f0000) == 0x580c0000)
2954 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2955 ry = (insn & 0x0000f000) << 4;
2956 else
2957 invalid_tls_insn (input_bfd, input_section, rel);
2958 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2959 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2960 }
2961 }
2962 else if (r_type == R_390_TLS_GDCALL)
2963 {
2964 unsigned int insn;
2965
2966 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2967 if ((insn & 0xff000fff) != 0x4d000000)
2968 invalid_tls_insn (input_bfd, input_section, rel);
2969 if (!info->shared && (h == NULL || h->dynindx == -1))
2970 /* GD->LE transition.
2971 bas %r14,0(%rx,%r13) -> bc 0,0 */
2972 insn = 0x47000000;
2973 else
2974 /* GD->IE transition.
2975 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2976 insn = 0x5822c000;
2977 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2978 }
2979 else if (r_type == R_390_TLS_LDCALL)
2980 {
2981 if (!info->shared)
2982 {
2983 unsigned int insn;
2984
2985 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2986 if ((insn & 0xff000fff) != 0x4d000000)
2987 invalid_tls_insn (input_bfd, input_section, rel);
2988 /* LD->LE transition.
2989 bas %r14,0(%rx,%r13) -> bc 0,0 */
2990 insn = 0x47000000;
2991 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2992 }
2993 }
2994 continue;
2995
2996 default:
2997 break;
2998 }
2999
3000 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3001 because such sections are not SEC_ALLOC and thus ld.so will
3002 not process them. */
3003 if (unresolved_reloc
3004 && !((input_section->flags & SEC_DEBUGGING) != 0
3005 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3006 (*_bfd_error_handler)
3007 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3008 bfd_archive_filename (input_bfd),
3009 bfd_get_section_name (input_bfd, input_section),
3010 (long) rel->r_offset,
3011 h->root.root.string);
3012
3013 if (r_type == R_390_20
3014 || r_type == R_390_GOT20
3015 || r_type == R_390_GOTPLT20
3016 || r_type == R_390_TLS_GOTIE20)
3017 {
3018 relocation += rel->r_addend;
3019 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3020 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3021 contents, rel->r_offset,
3022 relocation, 0);
3023 }
3024 else
3025 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3026 contents, rel->r_offset,
3027 relocation, rel->r_addend);
3028
3029 if (r != bfd_reloc_ok)
3030 {
3031 const char *name;
3032
3033 if (h != NULL)
3034 name = h->root.root.string;
3035 else
3036 {
3037 name = bfd_elf_string_from_elf_section (input_bfd,
3038 symtab_hdr->sh_link,
3039 sym->st_name);
3040 if (name == NULL)
3041 return FALSE;
3042 if (*name == '\0')
3043 name = bfd_section_name (input_bfd, sec);
3044 }
3045
3046 if (r == bfd_reloc_overflow)
3047 {
3048
3049 if (! ((*info->callbacks->reloc_overflow)
3050 (info, name, howto->name, (bfd_vma) 0,
3051 input_bfd, input_section, rel->r_offset)))
3052 return FALSE;
3053 }
3054 else
3055 {
3056 (*_bfd_error_handler)
3057 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
3058 bfd_archive_filename (input_bfd),
3059 bfd_get_section_name (input_bfd, input_section),
3060 (long) rel->r_offset, name, (int) r);
3061 return FALSE;
3062 }
3063 }
3064 }
3065
3066 return TRUE;
3067 }
3068
3069 /* Finish up dynamic symbol handling. We set the contents of various
3070 dynamic sections here. */
3071
3072 static bfd_boolean
3073 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3074 bfd *output_bfd;
3075 struct bfd_link_info *info;
3076 struct elf_link_hash_entry *h;
3077 Elf_Internal_Sym *sym;
3078 {
3079 struct elf_s390_link_hash_table *htab;
3080
3081 htab = elf_s390_hash_table (info);
3082
3083 if (h->plt.offset != (bfd_vma) -1)
3084 {
3085 bfd_vma plt_index;
3086 bfd_vma got_offset;
3087 Elf_Internal_Rela rela;
3088 bfd_byte *loc;
3089 bfd_vma relative_offset;
3090
3091 /* This symbol has an entry in the procedure linkage table. Set
3092 it up. */
3093 if (h->dynindx == -1
3094 || htab->splt == NULL
3095 || htab->sgotplt == NULL
3096 || htab->srelplt == NULL)
3097 abort ();
3098
3099 /* Calc. index no.
3100 Current offset - size first entry / entry size. */
3101 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3102
3103 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3104 addr & GOT addr. */
3105 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3106
3107 /* S390 uses halfwords for relative branch calc! */
3108 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3109 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3110 /* If offset is > 32768, branch to a previous branch
3111 390 can only handle +-64 K jumps. */
3112 if ( -32768 > (int) relative_offset )
3113 relative_offset
3114 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3115
3116 /* Fill in the entry in the procedure linkage table. */
3117 if (!info->shared)
3118 {
3119 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3120 htab->splt->contents + h->plt.offset);
3121 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3122 htab->splt->contents + h->plt.offset + 4);
3123 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3124 htab->splt->contents + h->plt.offset + 8);
3125 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3126 htab->splt->contents + h->plt.offset + 12);
3127 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3128 htab->splt->contents + h->plt.offset + 16);
3129 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3130 htab->splt->contents + h->plt.offset + 20);
3131 bfd_put_32 (output_bfd,
3132 (htab->sgotplt->output_section->vma
3133 + htab->sgotplt->output_offset
3134 + got_offset),
3135 htab->splt->contents + h->plt.offset + 24);
3136 }
3137 else if (got_offset < 4096)
3138 {
3139 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3140 htab->splt->contents + h->plt.offset);
3141 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3142 htab->splt->contents + h->plt.offset + 4);
3143 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3144 htab->splt->contents + h->plt.offset + 8);
3145 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3146 htab->splt->contents + h->plt.offset + 12);
3147 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3148 htab->splt->contents + h->plt.offset + 16);
3149 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3150 htab->splt->contents + h->plt.offset + 20);
3151 bfd_put_32 (output_bfd, (bfd_vma) 0,
3152 htab->splt->contents + h->plt.offset + 24);
3153 }
3154 else if (got_offset < 32768)
3155 {
3156 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3157 htab->splt->contents + h->plt.offset);
3158 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3159 htab->splt->contents + h->plt.offset + 4);
3160 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3161 htab->splt->contents + h->plt.offset + 8);
3162 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3163 htab->splt->contents + h->plt.offset + 12);
3164 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3165 htab->splt->contents + h->plt.offset + 16);
3166 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3167 htab->splt->contents + h->plt.offset + 20);
3168 bfd_put_32 (output_bfd, (bfd_vma) 0,
3169 htab->splt->contents + h->plt.offset + 24);
3170 }
3171 else
3172 {
3173 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3174 htab->splt->contents + h->plt.offset);
3175 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3176 htab->splt->contents + h->plt.offset + 4);
3177 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3178 htab->splt->contents + h->plt.offset + 8);
3179 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3180 htab->splt->contents + h->plt.offset + 12);
3181 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3182 htab->splt->contents + h->plt.offset + 16);
3183 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3184 htab->splt->contents + h->plt.offset + 20);
3185 bfd_put_32 (output_bfd, got_offset,
3186 htab->splt->contents + h->plt.offset + 24);
3187 }
3188 /* Insert offset into reloc. table here. */
3189 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3190 htab->splt->contents + h->plt.offset + 28);
3191
3192 /* Fill in the entry in the global offset table.
3193 Points to instruction after GOT offset. */
3194 bfd_put_32 (output_bfd,
3195 (htab->splt->output_section->vma
3196 + htab->splt->output_offset
3197 + h->plt.offset
3198 + 12),
3199 htab->sgotplt->contents + got_offset);
3200
3201 /* Fill in the entry in the .rela.plt section. */
3202 rela.r_offset = (htab->sgotplt->output_section->vma
3203 + htab->sgotplt->output_offset
3204 + got_offset);
3205 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3206 rela.r_addend = 0;
3207 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3208 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3209
3210 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3211 {
3212 /* Mark the symbol as undefined, rather than as defined in
3213 the .plt section. Leave the value alone. This is a clue
3214 for the dynamic linker, to make function pointer
3215 comparisons work between an application and shared
3216 library. */
3217 sym->st_shndx = SHN_UNDEF;
3218 }
3219 }
3220
3221 if (h->got.offset != (bfd_vma) -1
3222 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3223 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3224 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3225 {
3226 Elf_Internal_Rela rela;
3227 bfd_byte *loc;
3228
3229 /* This symbol has an entry in the global offset table. Set it
3230 up. */
3231
3232 if (htab->sgot == NULL || htab->srelgot == NULL)
3233 abort ();
3234
3235 rela.r_offset = (htab->sgot->output_section->vma
3236 + htab->sgot->output_offset
3237 + (h->got.offset &~ (bfd_vma) 1));
3238
3239 /* If this is a static link, or it is a -Bsymbolic link and the
3240 symbol is defined locally or was forced to be local because
3241 of a version file, we just want to emit a RELATIVE reloc.
3242 The entry in the global offset table will already have been
3243 initialized in the relocate_section function. */
3244 if (info->shared
3245 && (info->symbolic
3246 || h->dynindx == -1
3247 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
3248 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3249 {
3250 BFD_ASSERT((h->got.offset & 1) != 0);
3251 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3252 rela.r_addend = (h->root.u.def.value
3253 + h->root.u.def.section->output_section->vma
3254 + h->root.u.def.section->output_offset);
3255 }
3256 else
3257 {
3258 BFD_ASSERT((h->got.offset & 1) == 0);
3259 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3260 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3261 rela.r_addend = 0;
3262 }
3263
3264 loc = htab->srelgot->contents;
3265 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3266 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3267 }
3268
3269 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3270 {
3271 Elf_Internal_Rela rela;
3272 bfd_byte *loc;
3273
3274 /* This symbols needs a copy reloc. Set it up. */
3275
3276 if (h->dynindx == -1
3277 || (h->root.type != bfd_link_hash_defined
3278 && h->root.type != bfd_link_hash_defweak)
3279 || htab->srelbss == NULL)
3280 abort ();
3281
3282 rela.r_offset = (h->root.u.def.value
3283 + h->root.u.def.section->output_section->vma
3284 + h->root.u.def.section->output_offset);
3285 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3286 rela.r_addend = 0;
3287 loc = htab->srelbss->contents;
3288 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3289 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3290 }
3291
3292 /* Mark some specially defined symbols as absolute. */
3293 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3294 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3295 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3296 sym->st_shndx = SHN_ABS;
3297
3298 return TRUE;
3299 }
3300
3301 /* Used to decide how to sort relocs in an optimal manner for the
3302 dynamic linker, before writing them out. */
3303
3304 static enum elf_reloc_type_class
3305 elf_s390_reloc_type_class (rela)
3306 const Elf_Internal_Rela *rela;
3307 {
3308 switch ((int) ELF32_R_TYPE (rela->r_info))
3309 {
3310 case R_390_RELATIVE:
3311 return reloc_class_relative;
3312 case R_390_JMP_SLOT:
3313 return reloc_class_plt;
3314 case R_390_COPY:
3315 return reloc_class_copy;
3316 default:
3317 return reloc_class_normal;
3318 }
3319 }
3320
3321 /* Finish up the dynamic sections. */
3322
3323 static bfd_boolean
3324 elf_s390_finish_dynamic_sections (output_bfd, info)
3325 bfd *output_bfd;
3326 struct bfd_link_info *info;
3327 {
3328 struct elf_s390_link_hash_table *htab;
3329 bfd *dynobj;
3330 asection *sdyn;
3331
3332 htab = elf_s390_hash_table (info);
3333 dynobj = htab->elf.dynobj;
3334 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3335
3336 if (htab->elf.dynamic_sections_created)
3337 {
3338 Elf32_External_Dyn *dyncon, *dynconend;
3339
3340 if (sdyn == NULL || htab->sgot == NULL)
3341 abort ();
3342
3343 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3344 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3345 for (; dyncon < dynconend; dyncon++)
3346 {
3347 Elf_Internal_Dyn dyn;
3348 asection *s;
3349
3350 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3351
3352 switch (dyn.d_tag)
3353 {
3354 default:
3355 continue;
3356
3357 case DT_PLTGOT:
3358 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3359 break;
3360
3361 case DT_JMPREL:
3362 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3363 break;
3364
3365 case DT_PLTRELSZ:
3366 s = htab->srelplt->output_section;
3367 if (s->_cooked_size != 0)
3368 dyn.d_un.d_val = s->_cooked_size;
3369 else
3370 dyn.d_un.d_val = s->_raw_size;
3371 break;
3372 }
3373
3374 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3375 }
3376
3377 /* Fill in the special first entry in the procedure linkage table. */
3378 if (htab->splt && htab->splt->_raw_size > 0)
3379 {
3380 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3381 if (info->shared)
3382 {
3383 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3384 htab->splt->contents );
3385 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3386 htab->splt->contents +4 );
3387 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3388 htab->splt->contents +8 );
3389 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3390 htab->splt->contents +12 );
3391 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3392 htab->splt->contents +16 );
3393 }
3394 else
3395 {
3396 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3397 htab->splt->contents );
3398 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3399 htab->splt->contents +4 );
3400 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3401 htab->splt->contents +8 );
3402 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3403 htab->splt->contents +12 );
3404 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3405 htab->splt->contents +16 );
3406 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3407 htab->splt->contents +20 );
3408 bfd_put_32 (output_bfd,
3409 htab->sgotplt->output_section->vma
3410 + htab->sgotplt->output_offset,
3411 htab->splt->contents + 24);
3412 }
3413 elf_section_data (htab->splt->output_section)
3414 ->this_hdr.sh_entsize = 4;
3415 }
3416
3417 }
3418
3419 if (htab->sgotplt)
3420 {
3421 /* Fill in the first three entries in the global offset table. */
3422 if (htab->sgotplt->_raw_size > 0)
3423 {
3424 bfd_put_32 (output_bfd,
3425 (sdyn == NULL ? (bfd_vma) 0
3426 : sdyn->output_section->vma + sdyn->output_offset),
3427 htab->sgotplt->contents);
3428 /* One entry for shared object struct ptr. */
3429 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3430 /* One entry for _dl_runtime_resolve. */
3431 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3432 }
3433
3434 elf_section_data (htab->sgotplt->output_section)
3435 ->this_hdr.sh_entsize = 4;
3436 }
3437 return TRUE;
3438 }
3439
3440 static bfd_boolean
3441 elf_s390_grok_prstatus (abfd, note)
3442 bfd * abfd;
3443 Elf_Internal_Note * note;
3444 {
3445 int offset;
3446 unsigned int raw_size;
3447
3448 switch (note->descsz)
3449 {
3450 default:
3451 return FALSE;
3452
3453 case 224: /* S/390 Linux. */
3454 /* pr_cursig */
3455 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3456
3457 /* pr_pid */
3458 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3459
3460 /* pr_reg */
3461 offset = 72;
3462 raw_size = 144;
3463 break;
3464 }
3465
3466 /* Make a ".reg/999" section. */
3467 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3468 raw_size, note->descpos + offset);
3469 }
3470
3471 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3472 #define TARGET_BIG_NAME "elf32-s390"
3473 #define ELF_ARCH bfd_arch_s390
3474 #define ELF_MACHINE_CODE EM_S390
3475 #define ELF_MACHINE_ALT1 EM_S390_OLD
3476 #define ELF_MAXPAGESIZE 0x1000
3477
3478 #define elf_backend_can_gc_sections 1
3479 #define elf_backend_can_refcount 1
3480 #define elf_backend_want_got_plt 1
3481 #define elf_backend_plt_readonly 1
3482 #define elf_backend_want_plt_sym 0
3483 #define elf_backend_got_header_size 12
3484 #define elf_backend_rela_normal 1
3485
3486 #define elf_info_to_howto elf_s390_info_to_howto
3487
3488 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3489 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3490 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3491
3492 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3493 #define elf_backend_check_relocs elf_s390_check_relocs
3494 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3495 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3496 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3497 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3498 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3499 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3500 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3501 #define elf_backend_relocate_section elf_s390_relocate_section
3502 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3503 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3504 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3505
3506 #define bfd_elf32_mkobject elf_s390_mkobject
3507 #define elf_backend_object_p elf_s390_object_p
3508
3509 #include "elf32-target.h"
git-cvsimport of binutils cvsroot