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file deffilep.c was initially added on branch binutils-2_19-branch.
[binutils.git] / bfd / elf32-s390.c
blob7aadadc6ca3fc9dce872f349f4a5965b46f40f5b
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28
29 static reloc_howto_type *elf_s390_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf_s390_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf_s390_is_local_label_name
34 PARAMS ((bfd *, const char *));
35 static struct bfd_hash_entry *link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
37 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
38 PARAMS ((bfd *));
39 static bfd_boolean create_got_section
40 PARAMS((bfd *, struct bfd_link_info *));
41 static bfd_boolean elf_s390_create_dynamic_sections
42 PARAMS((bfd *, struct bfd_link_info *));
43 static void elf_s390_copy_indirect_symbol
44 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
45 struct elf_link_hash_entry *));
46 static bfd_boolean elf_s390_check_relocs
47 PARAMS ((bfd *, struct bfd_link_info *, asection *,
48 const Elf_Internal_Rela *));
49 struct elf_s390_link_hash_entry;
50 static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry *));
52 static bfd_boolean elf_s390_adjust_dynamic_symbol
53 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
54 static bfd_boolean allocate_dynrelocs
55 PARAMS ((struct elf_link_hash_entry *, PTR));
56 static bfd_boolean readonly_dynrelocs
57 PARAMS ((struct elf_link_hash_entry *, PTR));
58 static bfd_boolean elf_s390_size_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf_s390_relocate_section
61 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
62 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
63 static bfd_boolean elf_s390_finish_dynamic_symbol
64 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
65 Elf_Internal_Sym *));
66 static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela *));
68 static bfd_boolean elf_s390_finish_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static bfd_boolean elf_s390_object_p
71 PARAMS ((bfd *));
72 static bfd_boolean elf_s390_grok_prstatus
73 PARAMS ((bfd *, Elf_Internal_Note *));
74 static int elf_s390_tls_transition
75 PARAMS ((struct bfd_link_info *, int, int));
76 static bfd_reloc_status_type s390_tls_reloc
77 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
78 static bfd_vma dtpoff_base
79 PARAMS ((struct bfd_link_info *));
80 static bfd_vma tpoff
81 PARAMS ((struct bfd_link_info *, bfd_vma));
82 static void invalid_tls_insn
83 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
84 static bfd_reloc_status_type s390_elf_ldisp_reloc
85 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
86
87 #include "elf/s390.h"
88
89 /* The relocation "howto" table. */
90
91 static reloc_howto_type elf_howto_table[] =
92 {
93 HOWTO (R_390_NONE, /* type */
94 0, /* rightshift */
95 0, /* size (0 = byte, 1 = short, 2 = long) */
96 0, /* bitsize */
97 FALSE, /* pc_relative */
98 0, /* bitpos */
99 complain_overflow_dont, /* complain_on_overflow */
100 bfd_elf_generic_reloc, /* special_function */
101 "R_390_NONE", /* name */
102 FALSE, /* partial_inplace */
103 0, /* src_mask */
104 0, /* dst_mask */
105 FALSE), /* pcrel_offset */
106
107 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
109 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
110 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
111 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
113 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
115 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
117 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
119 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
123 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
125 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
129 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
131 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
133 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
135 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
136 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
137 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
139 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
141 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
143 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
145 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
147 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
149 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
150 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
151 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
152 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
153 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
155 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
157 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
158 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
159 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
160 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
162 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
164 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
165 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
167 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
171 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
172 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
173 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
174 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
175 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
176 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
177 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
178 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
180 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
181 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
182 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
183 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
184 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
185 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
186 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
187 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
188 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
189 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
190 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
191 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
192 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
193 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
194 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
196 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
197 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
198 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
199 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
200 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
201 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
202 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
203 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
204 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
206 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
207 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
208 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
209 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
210 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
211 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
212 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
213 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
214 };
215
216 /* GNU extension to record C++ vtable hierarchy. */
217 static reloc_howto_type elf32_s390_vtinherit_howto =
218 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
219 static reloc_howto_type elf32_s390_vtentry_howto =
220 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
221
222 static reloc_howto_type *
223 elf_s390_reloc_type_lookup (abfd, code)
224 bfd *abfd ATTRIBUTE_UNUSED;
225 bfd_reloc_code_real_type code;
226 {
227 switch (code)
228 {
229 case BFD_RELOC_NONE:
230 return &elf_howto_table[(int) R_390_NONE];
231 case BFD_RELOC_8:
232 return &elf_howto_table[(int) R_390_8];
233 case BFD_RELOC_390_12:
234 return &elf_howto_table[(int) R_390_12];
235 case BFD_RELOC_16:
236 return &elf_howto_table[(int) R_390_16];
237 case BFD_RELOC_32:
238 return &elf_howto_table[(int) R_390_32];
239 case BFD_RELOC_CTOR:
240 return &elf_howto_table[(int) R_390_32];
241 case BFD_RELOC_32_PCREL:
242 return &elf_howto_table[(int) R_390_PC32];
243 case BFD_RELOC_390_GOT12:
244 return &elf_howto_table[(int) R_390_GOT12];
245 case BFD_RELOC_32_GOT_PCREL:
246 return &elf_howto_table[(int) R_390_GOT32];
247 case BFD_RELOC_390_PLT32:
248 return &elf_howto_table[(int) R_390_PLT32];
249 case BFD_RELOC_390_COPY:
250 return &elf_howto_table[(int) R_390_COPY];
251 case BFD_RELOC_390_GLOB_DAT:
252 return &elf_howto_table[(int) R_390_GLOB_DAT];
253 case BFD_RELOC_390_JMP_SLOT:
254 return &elf_howto_table[(int) R_390_JMP_SLOT];
255 case BFD_RELOC_390_RELATIVE:
256 return &elf_howto_table[(int) R_390_RELATIVE];
257 case BFD_RELOC_32_GOTOFF:
258 return &elf_howto_table[(int) R_390_GOTOFF32];
259 case BFD_RELOC_390_GOTPC:
260 return &elf_howto_table[(int) R_390_GOTPC];
261 case BFD_RELOC_390_GOT16:
262 return &elf_howto_table[(int) R_390_GOT16];
263 case BFD_RELOC_16_PCREL:
264 return &elf_howto_table[(int) R_390_PC16];
265 case BFD_RELOC_390_PC16DBL:
266 return &elf_howto_table[(int) R_390_PC16DBL];
267 case BFD_RELOC_390_PLT16DBL:
268 return &elf_howto_table[(int) R_390_PLT16DBL];
269 case BFD_RELOC_390_PC32DBL:
270 return &elf_howto_table[(int) R_390_PC32DBL];
271 case BFD_RELOC_390_PLT32DBL:
272 return &elf_howto_table[(int) R_390_PLT32DBL];
273 case BFD_RELOC_390_GOTPCDBL:
274 return &elf_howto_table[(int) R_390_GOTPCDBL];
275 case BFD_RELOC_390_GOTENT:
276 return &elf_howto_table[(int) R_390_GOTENT];
277 case BFD_RELOC_16_GOTOFF:
278 return &elf_howto_table[(int) R_390_GOTOFF16];
279 case BFD_RELOC_390_GOTPLT12:
280 return &elf_howto_table[(int) R_390_GOTPLT12];
281 case BFD_RELOC_390_GOTPLT16:
282 return &elf_howto_table[(int) R_390_GOTPLT16];
283 case BFD_RELOC_390_GOTPLT32:
284 return &elf_howto_table[(int) R_390_GOTPLT32];
285 case BFD_RELOC_390_GOTPLTENT:
286 return &elf_howto_table[(int) R_390_GOTPLTENT];
287 case BFD_RELOC_390_PLTOFF16:
288 return &elf_howto_table[(int) R_390_PLTOFF16];
289 case BFD_RELOC_390_PLTOFF32:
290 return &elf_howto_table[(int) R_390_PLTOFF32];
291 case BFD_RELOC_390_TLS_LOAD:
292 return &elf_howto_table[(int) R_390_TLS_LOAD];
293 case BFD_RELOC_390_TLS_GDCALL:
294 return &elf_howto_table[(int) R_390_TLS_GDCALL];
295 case BFD_RELOC_390_TLS_LDCALL:
296 return &elf_howto_table[(int) R_390_TLS_LDCALL];
297 case BFD_RELOC_390_TLS_GD32:
298 return &elf_howto_table[(int) R_390_TLS_GD32];
299 case BFD_RELOC_390_TLS_GOTIE12:
300 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
301 case BFD_RELOC_390_TLS_GOTIE32:
302 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
303 case BFD_RELOC_390_TLS_LDM32:
304 return &elf_howto_table[(int) R_390_TLS_LDM32];
305 case BFD_RELOC_390_TLS_IE32:
306 return &elf_howto_table[(int) R_390_TLS_IE32];
307 case BFD_RELOC_390_TLS_IEENT:
308 return &elf_howto_table[(int) R_390_TLS_IEENT];
309 case BFD_RELOC_390_TLS_LE32:
310 return &elf_howto_table[(int) R_390_TLS_LE32];
311 case BFD_RELOC_390_TLS_LDO32:
312 return &elf_howto_table[(int) R_390_TLS_LDO32];
313 case BFD_RELOC_390_TLS_DTPMOD:
314 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
315 case BFD_RELOC_390_TLS_DTPOFF:
316 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
317 case BFD_RELOC_390_TLS_TPOFF:
318 return &elf_howto_table[(int) R_390_TLS_TPOFF];
319 case BFD_RELOC_390_20:
320 return &elf_howto_table[(int) R_390_20];
321 case BFD_RELOC_390_GOT20:
322 return &elf_howto_table[(int) R_390_GOT20];
323 case BFD_RELOC_390_GOTPLT20:
324 return &elf_howto_table[(int) R_390_GOTPLT20];
325 case BFD_RELOC_390_TLS_GOTIE20:
326 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
327 case BFD_RELOC_VTABLE_INHERIT:
328 return &elf32_s390_vtinherit_howto;
329 case BFD_RELOC_VTABLE_ENTRY:
330 return &elf32_s390_vtentry_howto;
331 default:
332 break;
333 }
334 return 0;
335 }
336
337 static reloc_howto_type *
338 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
339 const char *r_name)
340 {
341 unsigned int i;
342
343 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
344 if (elf_howto_table[i].name != NULL
345 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
346 return &elf_howto_table[i];
347
348 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
349 return &elf32_s390_vtinherit_howto;
350 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
351 return &elf32_s390_vtentry_howto;
352
353 return NULL;
354 }
355
356 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
357 and elf32-s390.c has its own copy. */
358
359 static void
360 elf_s390_info_to_howto (abfd, cache_ptr, dst)
361 bfd *abfd ATTRIBUTE_UNUSED;
362 arelent *cache_ptr;
363 Elf_Internal_Rela *dst;
364 {
365 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
366 switch (r_type)
367 {
368 case R_390_GNU_VTINHERIT:
369 cache_ptr->howto = &elf32_s390_vtinherit_howto;
370 break;
371
372 case R_390_GNU_VTENTRY:
373 cache_ptr->howto = &elf32_s390_vtentry_howto;
374 break;
375
376 default:
377 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
378 {
379 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
380 abfd, (int) r_type);
381 r_type = R_390_NONE;
382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
384 }
385 }
386
387 /* A relocation function which doesn't do anything. */
388 static bfd_reloc_status_type
389 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
390 output_bfd, error_message)
391 bfd *abfd ATTRIBUTE_UNUSED;
392 arelent *reloc_entry;
393 asymbol *symbol ATTRIBUTE_UNUSED;
394 PTR data ATTRIBUTE_UNUSED;
395 asection *input_section;
396 bfd *output_bfd;
397 char **error_message ATTRIBUTE_UNUSED;
398 {
399 if (output_bfd)
400 reloc_entry->address += input_section->output_offset;
401 return bfd_reloc_ok;
402 }
403
404 /* Handle the large displacement relocs. */
405 static bfd_reloc_status_type
406 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
407 output_bfd, error_message)
408 bfd *abfd ATTRIBUTE_UNUSED;
409 arelent *reloc_entry;
410 asymbol *symbol;
411 PTR data ATTRIBUTE_UNUSED;
412 asection *input_section;
413 bfd *output_bfd;
414 char **error_message ATTRIBUTE_UNUSED;
415 {
416 reloc_howto_type *howto = reloc_entry->howto;
417 bfd_vma relocation;
418 bfd_vma insn;
419
420 if (output_bfd != (bfd *) NULL
421 && (symbol->flags & BSF_SECTION_SYM) == 0
422 && (! howto->partial_inplace
423 || reloc_entry->addend == 0))
424 {
425 reloc_entry->address += input_section->output_offset;
426 return bfd_reloc_ok;
427 }
428
429 if (output_bfd != NULL)
430 return bfd_reloc_continue;
431
432 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
433 return bfd_reloc_outofrange;
434
435 relocation = (symbol->value
436 + symbol->section->output_section->vma
437 + symbol->section->output_offset);
438 relocation += reloc_entry->addend;
439 if (howto->pc_relative)
440 {
441 relocation -= (input_section->output_section->vma
442 + input_section->output_offset);
443 relocation -= reloc_entry->address;
444 }
445
446 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
447 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
448 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
449
450 if ((bfd_signed_vma) relocation < - 0x80000
451 || (bfd_signed_vma) relocation > 0x7ffff)
452 return bfd_reloc_overflow;
453 else
454 return bfd_reloc_ok;
455 }
456
457 static bfd_boolean
458 elf_s390_is_local_label_name (abfd, name)
459 bfd *abfd;
460 const char *name;
461 {
462 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
463 return TRUE;
464
465 return _bfd_elf_is_local_label_name (abfd, name);
466 }
467
468 /* Functions for the 390 ELF linker. */
469
470 /* The name of the dynamic interpreter. This is put in the .interp
471 section. */
472
473 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
474
475 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
476 copying dynamic variables from a shared lib into an app's dynbss
477 section, and instead use a dynamic relocation to point into the
478 shared lib. */
479 #define ELIMINATE_COPY_RELOCS 1
480
481 /* The size in bytes of the first entry in the procedure linkage table. */
482 #define PLT_FIRST_ENTRY_SIZE 32
483 /* The size in bytes of an entry in the procedure linkage table. */
484 #define PLT_ENTRY_SIZE 32
485
486 #define GOT_ENTRY_SIZE 4
487
488 /* The first three entries in a procedure linkage table are reserved,
489 and the initial contents are unimportant (we zero them out).
490 Subsequent entries look like this. See the SVR4 ABI 386
491 supplement to see how this works. */
492
493 /* For the s390, simple addr offset can only be 0 - 4096.
494 To use the full 2 GB address space, several instructions
495 are needed to load an address in a register and execute
496 a branch( or just saving the address)
497
498 Furthermore, only r 0 and 1 are free to use!!! */
499
500 /* The first 3 words in the GOT are then reserved.
501 Word 0 is the address of the dynamic table.
502 Word 1 is a pointer to a structure describing the object
503 Word 2 is used to point to the loader entry address.
504
505 The code for position independent PLT entries looks like this:
506
507 r12 holds addr of the current GOT at entry to the PLT
508
509 The GOT holds the address in the PLT to be executed.
510 The loader then gets:
511 24(15) = Pointer to the structure describing the object.
512 28(15) = Offset in symbol table
513
514 The loader must then find the module where the function is
515 and insert the address in the GOT.
516
517 Note: 390 can only address +- 64 K relative.
518 We check if offset > 65536, then make a relative branch -64xxx
519 back to a previous defined branch
520
521 PLT1: BASR 1,0 # 2 bytes
522 L 1,22(1) # 4 bytes Load offset in GOT in r 1
523 L 1,(1,12) # 4 bytes Load address from GOT in r1
524 BCR 15,1 # 2 bytes Jump to address
525 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
526 L 1,14(1) # 4 bytes Load offset in symol table in r1
527 BRC 15,-x # 4 bytes Jump to start of PLT
528 .word 0 # 2 bytes filler
529 .long ? # 4 bytes offset in GOT
530 .long ? # 4 bytes offset into symbol table
531
532 This was the general case. There are two additional, optimizes PLT
533 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
534 First the one for GOT offsets < 4096:
535
536 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
537 BCR 15,1 # 2 bytes Jump to address
538 .word 0,0,0 # 6 bytes filler
539 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
540 L 1,14(1) # 4 bytes Load offset in symbol table in r1
541 BRC 15,-x # 4 bytes Jump to start of PLT
542 .word 0,0,0 # 6 bytes filler
543 .long ? # 4 bytes offset into symbol table
544
545 Second the one for GOT offsets < 32768:
546
547 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
548 L 1,(1,12) # 4 bytes Load address from GOT to r1
549 BCR 15,1 # 2 bytes Jump to address
550 .word 0 # 2 bytes filler
551 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
552 L 1,14(1) # 4 bytes Load offset in symbol table in r1
553 BRC 15,-x # 4 bytes Jump to start of PLT
554 .word 0,0,0 # 6 bytes filler
555 .long ? # 4 bytes offset into symbol table
556
557 Total = 32 bytes per PLT entry
558
559 The code for static build PLT entries looks like this:
560
561 PLT1: BASR 1,0 # 2 bytes
562 L 1,22(1) # 4 bytes Load address of GOT entry
563 L 1,0(0,1) # 4 bytes Load address from GOT in r1
564 BCR 15,1 # 2 bytes Jump to address
565 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
566 L 1,14(1) # 4 bytes Load offset in symbol table in r1
567 BRC 15,-x # 4 bytes Jump to start of PLT
568 .word 0 # 2 bytes filler
569 .long ? # 4 bytes address of GOT entry
570 .long ? # 4 bytes offset into symbol table */
571
572 #define PLT_PIC_ENTRY_WORD0 0x0d105810
573 #define PLT_PIC_ENTRY_WORD1 0x10165811
574 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
575 #define PLT_PIC_ENTRY_WORD3 0x0d105810
576 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
577
578 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
579 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
580 #define PLT_PIC12_ENTRY_WORD2 0x00000000
581 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
582 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
583
584 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
585 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
586 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
587 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
588 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
589
590 #define PLT_ENTRY_WORD0 0x0d105810
591 #define PLT_ENTRY_WORD1 0x10165810
592 #define PLT_ENTRY_WORD2 0x100007f1
593 #define PLT_ENTRY_WORD3 0x0d105810
594 #define PLT_ENTRY_WORD4 0x100ea7f4
595
596 /* The first PLT entry pushes the offset into the symbol table
597 from R1 onto the stack at 8(15) and the loader object info
598 at 12(15), loads the loader address in R1 and jumps to it. */
599
600 /* The first entry in the PLT for PIC code:
601
602 PLT0:
603 ST 1,28(15) # R1 has offset into symbol table
604 L 1,4(12) # Get loader ino(object struct address)
605 ST 1,24(15) # Store address
606 L 1,8(12) # Entry address of loader in R1
607 BR 1 # Jump to loader
608
609 The first entry in the PLT for static code:
610
611 PLT0:
612 ST 1,28(15) # R1 has offset into symbol table
613 BASR 1,0
614 L 1,18(0,1) # Get address of GOT
615 MVC 24(4,15),4(1) # Move loader ino to stack
616 L 1,8(1) # Get address of loader
617 BR 1 # Jump to loader
618 .word 0 # filler
619 .long got # address of GOT */
620
621 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
622 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
623 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
624 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
625 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
626
627 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
628 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
629 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
630 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
631 #define PLT_FIRST_ENTRY_WORD4 0x58101008
632 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
633
634 /* The s390 linker needs to keep track of the number of relocs that it
635 decides to copy as dynamic relocs in check_relocs for each symbol.
636 This is so that it can later discard them if they are found to be
637 unnecessary. We store the information in a field extending the
638 regular ELF linker hash table. */
639
640 struct elf_s390_dyn_relocs
641 {
642 struct elf_s390_dyn_relocs *next;
643
644 /* The input section of the reloc. */
645 asection *sec;
646
647 /* Total number of relocs copied for the input section. */
648 bfd_size_type count;
649
650 /* Number of pc-relative relocs copied for the input section. */
651 bfd_size_type pc_count;
652 };
653
654 /* s390 ELF linker hash entry. */
655
656 struct elf_s390_link_hash_entry
657 {
658 struct elf_link_hash_entry elf;
659
660 /* Track dynamic relocs copied for this symbol. */
661 struct elf_s390_dyn_relocs *dyn_relocs;
662
663 /* Number of GOTPLT references for a function. */
664 bfd_signed_vma gotplt_refcount;
665
666 #define GOT_UNKNOWN 0
667 #define GOT_NORMAL 1
668 #define GOT_TLS_GD 2
669 #define GOT_TLS_IE 3
670 #define GOT_TLS_IE_NLT 4
671 unsigned char tls_type;
672 };
673
674 #define elf_s390_hash_entry(ent) \
675 ((struct elf_s390_link_hash_entry *)(ent))
676
677 /* NOTE: Keep this structure in sync with
678 the one declared in elf64-s390.c. */
679 struct elf_s390_obj_tdata
680 {
681 struct elf_obj_tdata root;
682
683 /* TLS type for each local got entry. */
684 char *local_got_tls_type;
685 };
686
687 #define elf_s390_tdata(abfd) \
688 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
689
690 #define elf_s390_local_got_tls_type(abfd) \
691 (elf_s390_tdata (abfd)->local_got_tls_type)
692
693 #define is_s390_elf(bfd) \
694 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
695 && elf_tdata (bfd) != NULL \
696 && elf_object_id (bfd) == S390_ELF_TDATA)
697
698 static bfd_boolean
699 elf_s390_mkobject (bfd *abfd)
700 {
701 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
702 S390_ELF_TDATA);
703 }
704
705 static bfd_boolean
706 elf_s390_object_p (abfd)
707 bfd *abfd;
708 {
709 /* Set the right machine number for an s390 elf32 file. */
710 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
711 }
712
713 /* s390 ELF linker hash table. */
714
715 struct elf_s390_link_hash_table
716 {
717 struct elf_link_hash_table elf;
718
719 /* Short-cuts to get to dynamic linker sections. */
720 asection *sgot;
721 asection *sgotplt;
722 asection *srelgot;
723 asection *splt;
724 asection *srelplt;
725 asection *sdynbss;
726 asection *srelbss;
727
728 union {
729 bfd_signed_vma refcount;
730 bfd_vma offset;
731 } tls_ldm_got;
732
733 /* Small local sym to section mapping cache. */
734 struct sym_sec_cache sym_sec;
735 };
736
737 /* Get the s390 ELF linker hash table from a link_info structure. */
738
739 #define elf_s390_hash_table(p) \
740 ((struct elf_s390_link_hash_table *) ((p)->hash))
741
742 /* Create an entry in an s390 ELF linker hash table. */
743
744 static struct bfd_hash_entry *
745 link_hash_newfunc (entry, table, string)
746 struct bfd_hash_entry *entry;
747 struct bfd_hash_table *table;
748 const char *string;
749 {
750 /* Allocate the structure if it has not already been allocated by a
751 subclass. */
752 if (entry == NULL)
753 {
754 entry = bfd_hash_allocate (table,
755 sizeof (struct elf_s390_link_hash_entry));
756 if (entry == NULL)
757 return entry;
758 }
759
760 /* Call the allocation method of the superclass. */
761 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
762 if (entry != NULL)
763 {
764 struct elf_s390_link_hash_entry *eh;
765
766 eh = (struct elf_s390_link_hash_entry *) entry;
767 eh->dyn_relocs = NULL;
768 eh->gotplt_refcount = 0;
769 eh->tls_type = GOT_UNKNOWN;
770 }
771
772 return entry;
773 }
774
775 /* Create an s390 ELF linker hash table. */
776
777 static struct bfd_link_hash_table *
778 elf_s390_link_hash_table_create (abfd)
779 bfd *abfd;
780 {
781 struct elf_s390_link_hash_table *ret;
782 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
783
784 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
785 if (ret == NULL)
786 return NULL;
787
788 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
789 sizeof (struct elf_s390_link_hash_entry)))
790 {
791 free (ret);
792 return NULL;
793 }
794
795 ret->sgot = NULL;
796 ret->sgotplt = NULL;
797 ret->srelgot = NULL;
798 ret->splt = NULL;
799 ret->srelplt = NULL;
800 ret->sdynbss = NULL;
801 ret->srelbss = NULL;
802 ret->tls_ldm_got.refcount = 0;
803 ret->sym_sec.abfd = NULL;
804
805 return &ret->elf.root;
806 }
807
808 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
809 shortcuts to them in our hash table. */
810
811 static bfd_boolean
812 create_got_section (dynobj, info)
813 bfd *dynobj;
814 struct bfd_link_info *info;
815 {
816 struct elf_s390_link_hash_table *htab;
817
818 if (! _bfd_elf_create_got_section (dynobj, info))
819 return FALSE;
820
821 htab = elf_s390_hash_table (info);
822 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
823 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
824 if (!htab->sgot || !htab->sgotplt)
825 abort ();
826
827 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
828 (SEC_ALLOC | SEC_LOAD
829 | SEC_HAS_CONTENTS
830 | SEC_IN_MEMORY
831 | SEC_LINKER_CREATED
832 | SEC_READONLY));
833 if (htab->srelgot == NULL
834 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
835 return FALSE;
836 return TRUE;
837 }
838
839 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
840 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
841 hash table. */
842
843 static bfd_boolean
844 elf_s390_create_dynamic_sections (dynobj, info)
845 bfd *dynobj;
846 struct bfd_link_info *info;
847 {
848 struct elf_s390_link_hash_table *htab;
849
850 htab = elf_s390_hash_table (info);
851 if (!htab->sgot && !create_got_section (dynobj, info))
852 return FALSE;
853
854 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
855 return FALSE;
856
857 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
858 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
859 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
860 if (!info->shared)
861 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
862
863 if (!htab->splt || !htab->srelplt || !htab->sdynbss
864 || (!info->shared && !htab->srelbss))
865 abort ();
866
867 return TRUE;
868 }
869
870 /* Copy the extra info we tack onto an elf_link_hash_entry. */
871
872 static void
873 elf_s390_copy_indirect_symbol (info, dir, ind)
874 struct bfd_link_info *info;
875 struct elf_link_hash_entry *dir, *ind;
876 {
877 struct elf_s390_link_hash_entry *edir, *eind;
878
879 edir = (struct elf_s390_link_hash_entry *) dir;
880 eind = (struct elf_s390_link_hash_entry *) ind;
881
882 if (eind->dyn_relocs != NULL)
883 {
884 if (edir->dyn_relocs != NULL)
885 {
886 struct elf_s390_dyn_relocs **pp;
887 struct elf_s390_dyn_relocs *p;
888
889 /* Add reloc counts against the indirect sym to the direct sym
890 list. Merge any entries against the same section. */
891 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
892 {
893 struct elf_s390_dyn_relocs *q;
894
895 for (q = edir->dyn_relocs; q != NULL; q = q->next)
896 if (q->sec == p->sec)
897 {
898 q->pc_count += p->pc_count;
899 q->count += p->count;
900 *pp = p->next;
901 break;
902 }
903 if (q == NULL)
904 pp = &p->next;
905 }
906 *pp = edir->dyn_relocs;
907 }
908
909 edir->dyn_relocs = eind->dyn_relocs;
910 eind->dyn_relocs = NULL;
911 }
912
913 if (ind->root.type == bfd_link_hash_indirect
914 && dir->got.refcount <= 0)
915 {
916 edir->tls_type = eind->tls_type;
917 eind->tls_type = GOT_UNKNOWN;
918 }
919
920 if (ELIMINATE_COPY_RELOCS
921 && ind->root.type != bfd_link_hash_indirect
922 && dir->dynamic_adjusted)
923 {
924 /* If called to transfer flags for a weakdef during processing
925 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
926 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
927 dir->ref_dynamic |= ind->ref_dynamic;
928 dir->ref_regular |= ind->ref_regular;
929 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
930 dir->needs_plt |= ind->needs_plt;
931 }
932 else
933 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
934 }
935
936 static int
937 elf_s390_tls_transition (info, r_type, is_local)
938 struct bfd_link_info *info;
939 int r_type;
940 int is_local;
941 {
942 if (info->shared)
943 return r_type;
944
945 switch (r_type)
946 {
947 case R_390_TLS_GD32:
948 case R_390_TLS_IE32:
949 if (is_local)
950 return R_390_TLS_LE32;
951 return R_390_TLS_IE32;
952 case R_390_TLS_GOTIE32:
953 if (is_local)
954 return R_390_TLS_LE32;
955 return R_390_TLS_GOTIE32;
956 case R_390_TLS_LDM32:
957 return R_390_TLS_LE32;
958 }
959
960 return r_type;
961 }
962
963 /* Look through the relocs for a section during the first phase, and
964 allocate space in the global offset table or procedure linkage
965 table. */
966
967 static bfd_boolean
968 elf_s390_check_relocs (abfd, info, sec, relocs)
969 bfd *abfd;
970 struct bfd_link_info *info;
971 asection *sec;
972 const Elf_Internal_Rela *relocs;
973 {
974 struct elf_s390_link_hash_table *htab;
975 Elf_Internal_Shdr *symtab_hdr;
976 struct elf_link_hash_entry **sym_hashes;
977 const Elf_Internal_Rela *rel;
978 const Elf_Internal_Rela *rel_end;
979 asection *sreloc;
980 bfd_signed_vma *local_got_refcounts;
981 int tls_type, old_tls_type;
982
983 if (info->relocatable)
984 return TRUE;
985
986 BFD_ASSERT (is_s390_elf (abfd));
987
988 htab = elf_s390_hash_table (info);
989 symtab_hdr = &elf_symtab_hdr (abfd);
990 sym_hashes = elf_sym_hashes (abfd);
991 local_got_refcounts = elf_local_got_refcounts (abfd);
992
993 sreloc = NULL;
994
995 rel_end = relocs + sec->reloc_count;
996 for (rel = relocs; rel < rel_end; rel++)
997 {
998 unsigned int r_type;
999 unsigned long r_symndx;
1000 struct elf_link_hash_entry *h;
1001
1002 r_symndx = ELF32_R_SYM (rel->r_info);
1003
1004 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1005 {
1006 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1007 abfd, r_symndx);
1008 return FALSE;
1009 }
1010
1011 if (r_symndx < symtab_hdr->sh_info)
1012 h = NULL;
1013 else
1014 {
1015 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1016 while (h->root.type == bfd_link_hash_indirect
1017 || h->root.type == bfd_link_hash_warning)
1018 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1019 }
1020
1021 /* Create got section and local_got_refcounts array if they
1022 are needed. */
1023 r_type = elf_s390_tls_transition (info,
1024 ELF32_R_TYPE (rel->r_info),
1025 h == NULL);
1026 switch (r_type)
1027 {
1028 case R_390_GOT12:
1029 case R_390_GOT16:
1030 case R_390_GOT20:
1031 case R_390_GOT32:
1032 case R_390_GOTENT:
1033 case R_390_GOTPLT12:
1034 case R_390_GOTPLT16:
1035 case R_390_GOTPLT20:
1036 case R_390_GOTPLT32:
1037 case R_390_GOTPLTENT:
1038 case R_390_TLS_GD32:
1039 case R_390_TLS_GOTIE12:
1040 case R_390_TLS_GOTIE20:
1041 case R_390_TLS_GOTIE32:
1042 case R_390_TLS_IEENT:
1043 case R_390_TLS_IE32:
1044 case R_390_TLS_LDM32:
1045 if (h == NULL
1046 && local_got_refcounts == NULL)
1047 {
1048 bfd_size_type size;
1049
1050 size = symtab_hdr->sh_info;
1051 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1052 local_got_refcounts = ((bfd_signed_vma *)
1053 bfd_zalloc (abfd, size));
1054 if (local_got_refcounts == NULL)
1055 return FALSE;
1056 elf_local_got_refcounts (abfd) = local_got_refcounts;
1057 elf_s390_local_got_tls_type (abfd)
1058 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1059 }
1060 /* Fall through. */
1061 case R_390_GOTOFF16:
1062 case R_390_GOTOFF32:
1063 case R_390_GOTPC:
1064 case R_390_GOTPCDBL:
1065 if (htab->sgot == NULL)
1066 {
1067 if (htab->elf.dynobj == NULL)
1068 htab->elf.dynobj = abfd;
1069 if (!create_got_section (htab->elf.dynobj, info))
1070 return FALSE;
1071 }
1072 }
1073
1074 switch (r_type)
1075 {
1076 case R_390_GOTOFF16:
1077 case R_390_GOTOFF32:
1078 case R_390_GOTPC:
1079 case R_390_GOTPCDBL:
1080 /* Got is created, nothing to be done. */
1081 break;
1082
1083 case R_390_PLT16DBL:
1084 case R_390_PLT32DBL:
1085 case R_390_PLT32:
1086 case R_390_PLTOFF16:
1087 case R_390_PLTOFF32:
1088 /* This symbol requires a procedure linkage table entry. We
1089 actually build the entry in adjust_dynamic_symbol,
1090 because this might be a case of linking PIC code which is
1091 never referenced by a dynamic object, in which case we
1092 don't need to generate a procedure linkage table entry
1093 after all. */
1094
1095 /* If this is a local symbol, we resolve it directly without
1096 creating a procedure linkage table entry. */
1097 if (h != NULL)
1098 {
1099 h->needs_plt = 1;
1100 h->plt.refcount += 1;
1101 }
1102 break;
1103
1104 case R_390_GOTPLT12:
1105 case R_390_GOTPLT16:
1106 case R_390_GOTPLT20:
1107 case R_390_GOTPLT32:
1108 case R_390_GOTPLTENT:
1109 /* This symbol requires either a procedure linkage table entry
1110 or an entry in the local got. We actually build the entry
1111 in adjust_dynamic_symbol because whether this is really a
1112 global reference can change and with it the fact if we have
1113 to create a plt entry or a local got entry. To be able to
1114 make a once global symbol a local one we have to keep track
1115 of the number of gotplt references that exist for this
1116 symbol. */
1117 if (h != NULL)
1118 {
1119 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1120 h->needs_plt = 1;
1121 h->plt.refcount += 1;
1122 }
1123 else
1124 local_got_refcounts[r_symndx] += 1;
1125 break;
1126
1127 case R_390_TLS_LDM32:
1128 htab->tls_ldm_got.refcount += 1;
1129 break;
1130
1131 case R_390_TLS_IE32:
1132 case R_390_TLS_GOTIE12:
1133 case R_390_TLS_GOTIE20:
1134 case R_390_TLS_GOTIE32:
1135 case R_390_TLS_IEENT:
1136 if (info->shared)
1137 info->flags |= DF_STATIC_TLS;
1138 /* Fall through. */
1139
1140 case R_390_GOT12:
1141 case R_390_GOT16:
1142 case R_390_GOT20:
1143 case R_390_GOT32:
1144 case R_390_GOTENT:
1145 case R_390_TLS_GD32:
1146 /* This symbol requires a global offset table entry. */
1147 switch (r_type)
1148 {
1149 default:
1150 case R_390_GOT12:
1151 case R_390_GOT16:
1152 case R_390_GOT20:
1153 case R_390_GOT32:
1154 case R_390_GOTENT:
1155 tls_type = GOT_NORMAL;
1156 break;
1157 case R_390_TLS_GD32:
1158 tls_type = GOT_TLS_GD;
1159 break;
1160 case R_390_TLS_IE32:
1161 case R_390_TLS_GOTIE32:
1162 tls_type = GOT_TLS_IE;
1163 break;
1164 case R_390_TLS_GOTIE12:
1165 case R_390_TLS_GOTIE20:
1166 case R_390_TLS_IEENT:
1167 tls_type = GOT_TLS_IE_NLT;
1168 break;
1169 }
1170
1171 if (h != NULL)
1172 {
1173 h->got.refcount += 1;
1174 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1175 }
1176 else
1177 {
1178 local_got_refcounts[r_symndx] += 1;
1179 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1180 }
1181 /* If a TLS symbol is accessed using IE at least once,
1182 there is no point to use dynamic model for it. */
1183 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1184 {
1185 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1186 {
1187 (*_bfd_error_handler)
1188 (_("%B: `%s' accessed both as normal and thread local symbol"),
1189 abfd, h->root.root.string);
1190 return FALSE;
1191 }
1192 if (old_tls_type > tls_type)
1193 tls_type = old_tls_type;
1194 }
1195
1196 if (old_tls_type != tls_type)
1197 {
1198 if (h != NULL)
1199 elf_s390_hash_entry (h)->tls_type = tls_type;
1200 else
1201 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1202 }
1203
1204 if (r_type != R_390_TLS_IE32)
1205 break;
1206 /* Fall through. */
1207
1208 case R_390_TLS_LE32:
1209 if (!info->shared)
1210 break;
1211 info->flags |= DF_STATIC_TLS;
1212 /* Fall through. */
1213
1214 case R_390_8:
1215 case R_390_16:
1216 case R_390_32:
1217 case R_390_PC16:
1218 case R_390_PC16DBL:
1219 case R_390_PC32DBL:
1220 case R_390_PC32:
1221 if (h != NULL && !info->shared)
1222 {
1223 /* If this reloc is in a read-only section, we might
1224 need a copy reloc. We can't check reliably at this
1225 stage whether the section is read-only, as input
1226 sections have not yet been mapped to output sections.
1227 Tentatively set the flag for now, and correct in
1228 adjust_dynamic_symbol. */
1229 h->non_got_ref = 1;
1230
1231 /* We may need a .plt entry if the function this reloc
1232 refers to is in a shared lib. */
1233 h->plt.refcount += 1;
1234 }
1235
1236 /* If we are creating a shared library, and this is a reloc
1237 against a global symbol, or a non PC relative reloc
1238 against a local symbol, then we need to copy the reloc
1239 into the shared library. However, if we are linking with
1240 -Bsymbolic, we do not need to copy a reloc against a
1241 global symbol which is defined in an object we are
1242 including in the link (i.e., DEF_REGULAR is set). At
1243 this point we have not seen all the input files, so it is
1244 possible that DEF_REGULAR is not set now but will be set
1245 later (it is never cleared). In case of a weak definition,
1246 DEF_REGULAR may be cleared later by a strong definition in
1247 a shared library. We account for that possibility below by
1248 storing information in the relocs_copied field of the hash
1249 table entry. A similar situation occurs when creating
1250 shared libraries and symbol visibility changes render the
1251 symbol local.
1252
1253 If on the other hand, we are creating an executable, we
1254 may need to keep relocations for symbols satisfied by a
1255 dynamic library if we manage to avoid copy relocs for the
1256 symbol. */
1257 if ((info->shared
1258 && (sec->flags & SEC_ALLOC) != 0
1259 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1260 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1261 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1262 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1263 || (h != NULL
1264 && (! info->symbolic
1265 || h->root.type == bfd_link_hash_defweak
1266 || !h->def_regular))))
1267 || (ELIMINATE_COPY_RELOCS
1268 && !info->shared
1269 && (sec->flags & SEC_ALLOC) != 0
1270 && h != NULL
1271 && (h->root.type == bfd_link_hash_defweak
1272 || !h->def_regular)))
1273 {
1274 struct elf_s390_dyn_relocs *p;
1275 struct elf_s390_dyn_relocs **head;
1276
1277 /* We must copy these reloc types into the output file.
1278 Create a reloc section in dynobj and make room for
1279 this reloc. */
1280 if (sreloc == NULL)
1281 {
1282 if (htab->elf.dynobj == NULL)
1283 htab->elf.dynobj = abfd;
1284
1285 sreloc = _bfd_elf_make_dynamic_reloc_section
1286 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1287
1288 if (sreloc == NULL)
1289 return FALSE;
1290 }
1291
1292 /* If this is a global symbol, we count the number of
1293 relocations we need for this symbol. */
1294 if (h != NULL)
1295 {
1296 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1297 }
1298 else
1299 {
1300 /* Track dynamic relocs needed for local syms too.
1301 We really need local syms available to do this
1302 easily. Oh well. */
1303 asection *s;
1304 void *vpp;
1305
1306 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1307 sec, r_symndx);
1308 if (s == NULL)
1309 return FALSE;
1310
1311 vpp = &elf_section_data (s)->local_dynrel;
1312 head = (struct elf_s390_dyn_relocs **) vpp;
1313 }
1314
1315 p = *head;
1316 if (p == NULL || p->sec != sec)
1317 {
1318 bfd_size_type amt = sizeof *p;
1319
1320 p = ((struct elf_s390_dyn_relocs *)
1321 bfd_alloc (htab->elf.dynobj, amt));
1322 if (p == NULL)
1323 return FALSE;
1324 p->next = *head;
1325 *head = p;
1326 p->sec = sec;
1327 p->count = 0;
1328 p->pc_count = 0;
1329 }
1330
1331 p->count += 1;
1332 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1333 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1334 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1335 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1336 p->pc_count += 1;
1337 }
1338 break;
1339
1340 /* This relocation describes the C++ object vtable hierarchy.
1341 Reconstruct it for later use during GC. */
1342 case R_390_GNU_VTINHERIT:
1343 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1344 return FALSE;
1345 break;
1346
1347 /* This relocation describes which C++ vtable entries are actually
1348 used. Record for later use during GC. */
1349 case R_390_GNU_VTENTRY:
1350 BFD_ASSERT (h != NULL);
1351 if (h != NULL
1352 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1353 return FALSE;
1354 break;
1355
1356 default:
1357 break;
1358 }
1359 }
1360
1361 return TRUE;
1362 }
1363
1364 /* Return the section that should be marked against GC for a given
1365 relocation. */
1366
1367 static asection *
1368 elf_s390_gc_mark_hook (asection *sec,
1369 struct bfd_link_info *info,
1370 Elf_Internal_Rela *rel,
1371 struct elf_link_hash_entry *h,
1372 Elf_Internal_Sym *sym)
1373 {
1374 if (h != NULL)
1375 switch (ELF32_R_TYPE (rel->r_info))
1376 {
1377 case R_390_GNU_VTINHERIT:
1378 case R_390_GNU_VTENTRY:
1379 return NULL;
1380 }
1381 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1382
1383 }
1384
1385 /* Update the got entry reference counts for the section being removed. */
1386
1387 static bfd_boolean
1388 elf_s390_gc_sweep_hook (bfd *abfd,
1389 struct bfd_link_info *info,
1390 asection *sec,
1391 const Elf_Internal_Rela *relocs)
1392 {
1393 Elf_Internal_Shdr *symtab_hdr;
1394 struct elf_link_hash_entry **sym_hashes;
1395 bfd_signed_vma *local_got_refcounts;
1396 const Elf_Internal_Rela *rel, *relend;
1397
1398 if (info->relocatable)
1399 return TRUE;
1400
1401 elf_section_data (sec)->local_dynrel = NULL;
1402
1403 symtab_hdr = &elf_symtab_hdr (abfd);
1404 sym_hashes = elf_sym_hashes (abfd);
1405 local_got_refcounts = elf_local_got_refcounts (abfd);
1406
1407 relend = relocs + sec->reloc_count;
1408 for (rel = relocs; rel < relend; rel++)
1409 {
1410 unsigned long r_symndx;
1411 unsigned int r_type;
1412 struct elf_link_hash_entry *h = NULL;
1413
1414 r_symndx = ELF32_R_SYM (rel->r_info);
1415 if (r_symndx >= symtab_hdr->sh_info)
1416 {
1417 struct elf_s390_link_hash_entry *eh;
1418 struct elf_s390_dyn_relocs **pp;
1419 struct elf_s390_dyn_relocs *p;
1420
1421 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1422 while (h->root.type == bfd_link_hash_indirect
1423 || h->root.type == bfd_link_hash_warning)
1424 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1425 eh = (struct elf_s390_link_hash_entry *) h;
1426
1427 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1428 if (p->sec == sec)
1429 {
1430 /* Everything must go for SEC. */
1431 *pp = p->next;
1432 break;
1433 }
1434 }
1435
1436 r_type = ELF32_R_TYPE (rel->r_info);
1437 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1438 switch (r_type)
1439 {
1440 case R_390_TLS_LDM32:
1441 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1442 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1443 break;
1444
1445 case R_390_TLS_GD32:
1446 case R_390_TLS_IE32:
1447 case R_390_TLS_GOTIE12:
1448 case R_390_TLS_GOTIE20:
1449 case R_390_TLS_GOTIE32:
1450 case R_390_TLS_IEENT:
1451 case R_390_GOT12:
1452 case R_390_GOT16:
1453 case R_390_GOT20:
1454 case R_390_GOT32:
1455 case R_390_GOTOFF16:
1456 case R_390_GOTOFF32:
1457 case R_390_GOTPC:
1458 case R_390_GOTPCDBL:
1459 case R_390_GOTENT:
1460 if (h != NULL)
1461 {
1462 if (h->got.refcount > 0)
1463 h->got.refcount -= 1;
1464 }
1465 else if (local_got_refcounts != NULL)
1466 {
1467 if (local_got_refcounts[r_symndx] > 0)
1468 local_got_refcounts[r_symndx] -= 1;
1469 }
1470 break;
1471
1472 case R_390_8:
1473 case R_390_12:
1474 case R_390_16:
1475 case R_390_20:
1476 case R_390_32:
1477 case R_390_PC16:
1478 case R_390_PC16DBL:
1479 case R_390_PC32DBL:
1480 case R_390_PC32:
1481 if (info->shared)
1482 break;
1483 /* Fall through. */
1484
1485 case R_390_PLT16DBL:
1486 case R_390_PLT32DBL:
1487 case R_390_PLT32:
1488 case R_390_PLTOFF16:
1489 case R_390_PLTOFF32:
1490 if (h != NULL)
1491 {
1492 if (h->plt.refcount > 0)
1493 h->plt.refcount -= 1;
1494 }
1495 break;
1496
1497 case R_390_GOTPLT12:
1498 case R_390_GOTPLT16:
1499 case R_390_GOTPLT20:
1500 case R_390_GOTPLT32:
1501 case R_390_GOTPLTENT:
1502 if (h != NULL)
1503 {
1504 if (h->plt.refcount > 0)
1505 {
1506 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1507 h->plt.refcount -= 1;
1508 }
1509 }
1510 else if (local_got_refcounts != NULL)
1511 {
1512 if (local_got_refcounts[r_symndx] > 0)
1513 local_got_refcounts[r_symndx] -= 1;
1514 }
1515 break;
1516
1517 default:
1518 break;
1519 }
1520 }
1521
1522 return TRUE;
1523 }
1524
1525 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1526 entry but we found we will not create any. Called when we find we will
1527 not have any PLT for this symbol, by for example
1528 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1529 or elf_s390_size_dynamic_sections if no dynamic sections will be
1530 created (we're only linking static objects). */
1531
1532 static void
1533 elf_s390_adjust_gotplt (h)
1534 struct elf_s390_link_hash_entry *h;
1535 {
1536 if (h->elf.root.type == bfd_link_hash_warning)
1537 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1538
1539 if (h->gotplt_refcount <= 0)
1540 return;
1541
1542 /* We simply add the number of gotplt references to the number
1543 * of got references for this symbol. */
1544 h->elf.got.refcount += h->gotplt_refcount;
1545 h->gotplt_refcount = -1;
1546 }
1547
1548 /* Adjust a symbol defined by a dynamic object and referenced by a
1549 regular object. The current definition is in some section of the
1550 dynamic object, but we're not including those sections. We have to
1551 change the definition to something the rest of the link can
1552 understand. */
1553
1554 static bfd_boolean
1555 elf_s390_adjust_dynamic_symbol (info, h)
1556 struct bfd_link_info *info;
1557 struct elf_link_hash_entry *h;
1558 {
1559 struct elf_s390_link_hash_table *htab;
1560 asection *s;
1561
1562 /* If this is a function, put it in the procedure linkage table. We
1563 will fill in the contents of the procedure linkage table later
1564 (although we could actually do it here). */
1565 if (h->type == STT_FUNC
1566 || h->needs_plt)
1567 {
1568 if (h->plt.refcount <= 0
1569 || (! info->shared
1570 && !h->def_dynamic
1571 && !h->ref_dynamic
1572 && h->root.type != bfd_link_hash_undefweak
1573 && h->root.type != bfd_link_hash_undefined))
1574 {
1575 /* This case can occur if we saw a PLT32 reloc in an input
1576 file, but the symbol was never referred to by a dynamic
1577 object, or if all references were garbage collected. In
1578 such a case, we don't actually need to build a procedure
1579 linkage table, and we can just do a PC32 reloc instead. */
1580 h->plt.offset = (bfd_vma) -1;
1581 h->needs_plt = 0;
1582 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1583 }
1584
1585 return TRUE;
1586 }
1587 else
1588 /* It's possible that we incorrectly decided a .plt reloc was
1589 needed for an R_390_PC32 reloc to a non-function sym in
1590 check_relocs. We can't decide accurately between function and
1591 non-function syms in check-relocs; Objects loaded later in
1592 the link may change h->type. So fix it now. */
1593 h->plt.offset = (bfd_vma) -1;
1594
1595 /* If this is a weak symbol, and there is a real definition, the
1596 processor independent code will have arranged for us to see the
1597 real definition first, and we can just use the same value. */
1598 if (h->u.weakdef != NULL)
1599 {
1600 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1601 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1602 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1603 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1604 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1605 h->non_got_ref = h->u.weakdef->non_got_ref;
1606 return TRUE;
1607 }
1608
1609 /* This is a reference to a symbol defined by a dynamic object which
1610 is not a function. */
1611
1612 /* If we are creating a shared library, we must presume that the
1613 only references to the symbol are via the global offset table.
1614 For such cases we need not do anything here; the relocations will
1615 be handled correctly by relocate_section. */
1616 if (info->shared)
1617 return TRUE;
1618
1619 /* If there are no references to this symbol that do not use the
1620 GOT, we don't need to generate a copy reloc. */
1621 if (!h->non_got_ref)
1622 return TRUE;
1623
1624 /* If -z nocopyreloc was given, we won't generate them either. */
1625 if (info->nocopyreloc)
1626 {
1627 h->non_got_ref = 0;
1628 return TRUE;
1629 }
1630
1631 if (ELIMINATE_COPY_RELOCS)
1632 {
1633 struct elf_s390_link_hash_entry * eh;
1634 struct elf_s390_dyn_relocs *p;
1635
1636 eh = (struct elf_s390_link_hash_entry *) h;
1637 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1638 {
1639 s = p->sec->output_section;
1640 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1641 break;
1642 }
1643
1644 /* If we didn't find any dynamic relocs in read-only sections, then
1645 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1646 if (p == NULL)
1647 {
1648 h->non_got_ref = 0;
1649 return TRUE;
1650 }
1651 }
1652
1653 if (h->size == 0)
1654 {
1655 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1656 h->root.root.string);
1657 return TRUE;
1658 }
1659
1660 /* We must allocate the symbol in our .dynbss section, which will
1661 become part of the .bss section of the executable. There will be
1662 an entry for this symbol in the .dynsym section. The dynamic
1663 object will contain position independent code, so all references
1664 from the dynamic object to this symbol will go through the global
1665 offset table. The dynamic linker will use the .dynsym entry to
1666 determine the address it must put in the global offset table, so
1667 both the dynamic object and the regular object will refer to the
1668 same memory location for the variable. */
1669
1670 htab = elf_s390_hash_table (info);
1671
1672 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1673 copy the initial value out of the dynamic object and into the
1674 runtime process image. */
1675 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1676 {
1677 htab->srelbss->size += sizeof (Elf32_External_Rela);
1678 h->needs_copy = 1;
1679 }
1680
1681 s = htab->sdynbss;
1682
1683 return _bfd_elf_adjust_dynamic_copy (h, s);
1684 }
1685
1686 /* Allocate space in .plt, .got and associated reloc sections for
1687 dynamic relocs. */
1688
1689 static bfd_boolean
1690 allocate_dynrelocs (h, inf)
1691 struct elf_link_hash_entry *h;
1692 PTR inf;
1693 {
1694 struct bfd_link_info *info;
1695 struct elf_s390_link_hash_table *htab;
1696 struct elf_s390_link_hash_entry *eh;
1697 struct elf_s390_dyn_relocs *p;
1698
1699 if (h->root.type == bfd_link_hash_indirect)
1700 return TRUE;
1701
1702 if (h->root.type == bfd_link_hash_warning)
1703 /* When warning symbols are created, they **replace** the "real"
1704 entry in the hash table, thus we never get to see the real
1705 symbol in a hash traversal. So look at it now. */
1706 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1707
1708 info = (struct bfd_link_info *) inf;
1709 htab = elf_s390_hash_table (info);
1710
1711 if (htab->elf.dynamic_sections_created
1712 && h->plt.refcount > 0
1713 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1714 || h->root.type != bfd_link_hash_undefweak))
1715 {
1716 /* Make sure this symbol is output as a dynamic symbol.
1717 Undefined weak syms won't yet be marked as dynamic. */
1718 if (h->dynindx == -1
1719 && !h->forced_local)
1720 {
1721 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1722 return FALSE;
1723 }
1724
1725 if (info->shared
1726 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1727 {
1728 asection *s = htab->splt;
1729
1730 /* If this is the first .plt entry, make room for the special
1731 first entry. */
1732 if (s->size == 0)
1733 s->size += PLT_FIRST_ENTRY_SIZE;
1734
1735 h->plt.offset = s->size;
1736
1737 /* If this symbol is not defined in a regular file, and we are
1738 not generating a shared library, then set the symbol to this
1739 location in the .plt. This is required to make function
1740 pointers compare as equal between the normal executable and
1741 the shared library. */
1742 if (! info->shared
1743 && !h->def_regular)
1744 {
1745 h->root.u.def.section = s;
1746 h->root.u.def.value = h->plt.offset;
1747 }
1748
1749 /* Make room for this entry. */
1750 s->size += PLT_ENTRY_SIZE;
1751
1752 /* We also need to make an entry in the .got.plt section, which
1753 will be placed in the .got section by the linker script. */
1754 htab->sgotplt->size += GOT_ENTRY_SIZE;
1755
1756 /* We also need to make an entry in the .rela.plt section. */
1757 htab->srelplt->size += sizeof (Elf32_External_Rela);
1758 }
1759 else
1760 {
1761 h->plt.offset = (bfd_vma) -1;
1762 h->needs_plt = 0;
1763 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1764 }
1765 }
1766 else
1767 {
1768 h->plt.offset = (bfd_vma) -1;
1769 h->needs_plt = 0;
1770 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1771 }
1772
1773 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1774 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1775 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1776 we can save the dynamic TLS relocation. */
1777 if (h->got.refcount > 0
1778 && !info->shared
1779 && h->dynindx == -1
1780 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1781 {
1782 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1783 /* For the GOTIE access without a literal pool entry the offset has
1784 to be stored somewhere. The immediate value in the instruction
1785 is not bit enough so the value is stored in the got. */
1786 {
1787 h->got.offset = htab->sgot->size;
1788 htab->sgot->size += GOT_ENTRY_SIZE;
1789 }
1790 else
1791 h->got.offset = (bfd_vma) -1;
1792 }
1793 else if (h->got.refcount > 0)
1794 {
1795 asection *s;
1796 bfd_boolean dyn;
1797 int tls_type = elf_s390_hash_entry(h)->tls_type;
1798
1799 /* Make sure this symbol is output as a dynamic symbol.
1800 Undefined weak syms won't yet be marked as dynamic. */
1801 if (h->dynindx == -1
1802 && !h->forced_local)
1803 {
1804 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1805 return FALSE;
1806 }
1807
1808 s = htab->sgot;
1809 h->got.offset = s->size;
1810 s->size += GOT_ENTRY_SIZE;
1811 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1812 if (tls_type == GOT_TLS_GD)
1813 s->size += GOT_ENTRY_SIZE;
1814 dyn = htab->elf.dynamic_sections_created;
1815 /* R_390_TLS_IE32 needs one dynamic relocation,
1816 R_390_TLS_GD32 needs one if local symbol and two if global. */
1817 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1818 || tls_type >= GOT_TLS_IE)
1819 htab->srelgot->size += sizeof (Elf32_External_Rela);
1820 else if (tls_type == GOT_TLS_GD)
1821 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1822 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1823 || h->root.type != bfd_link_hash_undefweak)
1824 && (info->shared
1825 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1826 htab->srelgot->size += sizeof (Elf32_External_Rela);
1827 }
1828 else
1829 h->got.offset = (bfd_vma) -1;
1830
1831 eh = (struct elf_s390_link_hash_entry *) h;
1832 if (eh->dyn_relocs == NULL)
1833 return TRUE;
1834
1835 /* In the shared -Bsymbolic case, discard space allocated for
1836 dynamic pc-relative relocs against symbols which turn out to be
1837 defined in regular objects. For the normal shared case, discard
1838 space for pc-relative relocs that have become local due to symbol
1839 visibility changes. */
1840
1841 if (info->shared)
1842 {
1843 if (SYMBOL_REFERENCES_LOCAL (info, h))
1844 {
1845 struct elf_s390_dyn_relocs **pp;
1846
1847 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1848 {
1849 p->count -= p->pc_count;
1850 p->pc_count = 0;
1851 if (p->count == 0)
1852 *pp = p->next;
1853 else
1854 pp = &p->next;
1855 }
1856 }
1857
1858 /* Also discard relocs on undefined weak syms with non-default
1859 visibility. */
1860 if (eh->dyn_relocs != NULL
1861 && h->root.type == bfd_link_hash_undefweak)
1862 {
1863 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1864 eh->dyn_relocs = NULL;
1865
1866 /* Make sure undefined weak symbols are output as a dynamic
1867 symbol in PIEs. */
1868 else if (h->dynindx == -1
1869 && !h->forced_local)
1870 {
1871 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1872 return FALSE;
1873 }
1874 }
1875 }
1876 else if (ELIMINATE_COPY_RELOCS)
1877 {
1878 /* For the non-shared case, discard space for relocs against
1879 symbols which turn out to need copy relocs or are not
1880 dynamic. */
1881
1882 if (!h->non_got_ref
1883 && ((h->def_dynamic
1884 && !h->def_regular)
1885 || (htab->elf.dynamic_sections_created
1886 && (h->root.type == bfd_link_hash_undefweak
1887 || h->root.type == bfd_link_hash_undefined))))
1888 {
1889 /* Make sure this symbol is output as a dynamic symbol.
1890 Undefined weak syms won't yet be marked as dynamic. */
1891 if (h->dynindx == -1
1892 && !h->forced_local)
1893 {
1894 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1895 return FALSE;
1896 }
1897
1898 /* If that succeeded, we know we'll be keeping all the
1899 relocs. */
1900 if (h->dynindx != -1)
1901 goto keep;
1902 }
1903
1904 eh->dyn_relocs = NULL;
1905
1906 keep: ;
1907 }
1908
1909 /* Finally, allocate space. */
1910 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1911 {
1912 asection *sreloc = elf_section_data (p->sec)->sreloc;
1913
1914 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1915 }
1916
1917 return TRUE;
1918 }
1919
1920 /* Find any dynamic relocs that apply to read-only sections. */
1921
1922 static bfd_boolean
1923 readonly_dynrelocs (h, inf)
1924 struct elf_link_hash_entry *h;
1925 PTR inf;
1926 {
1927 struct elf_s390_link_hash_entry *eh;
1928 struct elf_s390_dyn_relocs *p;
1929
1930 if (h->root.type == bfd_link_hash_warning)
1931 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1932
1933 eh = (struct elf_s390_link_hash_entry *) h;
1934 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1935 {
1936 asection *s = p->sec->output_section;
1937
1938 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1939 {
1940 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1941
1942 info->flags |= DF_TEXTREL;
1943
1944 /* Not an error, just cut short the traversal. */
1945 return FALSE;
1946 }
1947 }
1948 return TRUE;
1949 }
1950
1951 /* Set the sizes of the dynamic sections. */
1952
1953 static bfd_boolean
1954 elf_s390_size_dynamic_sections (output_bfd, info)
1955 bfd *output_bfd ATTRIBUTE_UNUSED;
1956 struct bfd_link_info *info;
1957 {
1958 struct elf_s390_link_hash_table *htab;
1959 bfd *dynobj;
1960 asection *s;
1961 bfd_boolean relocs;
1962 bfd *ibfd;
1963
1964 htab = elf_s390_hash_table (info);
1965 dynobj = htab->elf.dynobj;
1966 if (dynobj == NULL)
1967 abort ();
1968
1969 if (htab->elf.dynamic_sections_created)
1970 {
1971 /* Set the contents of the .interp section to the interpreter. */
1972 if (info->executable)
1973 {
1974 s = bfd_get_section_by_name (dynobj, ".interp");
1975 if (s == NULL)
1976 abort ();
1977 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1978 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1979 }
1980 }
1981
1982 /* Set up .got offsets for local syms, and space for local dynamic
1983 relocs. */
1984 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1985 {
1986 bfd_signed_vma *local_got;
1987 bfd_signed_vma *end_local_got;
1988 char *local_tls_type;
1989 bfd_size_type locsymcount;
1990 Elf_Internal_Shdr *symtab_hdr;
1991 asection *srela;
1992
1993 if (! is_s390_elf (ibfd))
1994 continue;
1995
1996 for (s = ibfd->sections; s != NULL; s = s->next)
1997 {
1998 struct elf_s390_dyn_relocs *p;
1999
2000 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2001 {
2002 if (!bfd_is_abs_section (p->sec)
2003 && bfd_is_abs_section (p->sec->output_section))
2004 {
2005 /* Input section has been discarded, either because
2006 it is a copy of a linkonce section or due to
2007 linker script /DISCARD/, so we'll be discarding
2008 the relocs too. */
2009 }
2010 else if (p->count != 0)
2011 {
2012 srela = elf_section_data (p->sec)->sreloc;
2013 srela->size += p->count * sizeof (Elf32_External_Rela);
2014 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2015 info->flags |= DF_TEXTREL;
2016 }
2017 }
2018 }
2019
2020 local_got = elf_local_got_refcounts (ibfd);
2021 if (!local_got)
2022 continue;
2023
2024 symtab_hdr = &elf_symtab_hdr (ibfd);
2025 locsymcount = symtab_hdr->sh_info;
2026 end_local_got = local_got + locsymcount;
2027 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2028 s = htab->sgot;
2029 srela = htab->srelgot;
2030 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2031 {
2032 if (*local_got > 0)
2033 {
2034 *local_got = s->size;
2035 s->size += GOT_ENTRY_SIZE;
2036 if (*local_tls_type == GOT_TLS_GD)
2037 s->size += GOT_ENTRY_SIZE;
2038 if (info->shared)
2039 srela->size += sizeof (Elf32_External_Rela);
2040 }
2041 else
2042 *local_got = (bfd_vma) -1;
2043 }
2044 }
2045
2046 if (htab->tls_ldm_got.refcount > 0)
2047 {
2048 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2049 relocs. */
2050 htab->tls_ldm_got.offset = htab->sgot->size;
2051 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2052 htab->srelgot->size += sizeof (Elf32_External_Rela);
2053 }
2054 else
2055 htab->tls_ldm_got.offset = -1;
2056
2057 /* Allocate global sym .plt and .got entries, and space for global
2058 sym dynamic relocs. */
2059 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2060
2061 /* We now have determined the sizes of the various dynamic sections.
2062 Allocate memory for them. */
2063 relocs = FALSE;
2064 for (s = dynobj->sections; s != NULL; s = s->next)
2065 {
2066 if ((s->flags & SEC_LINKER_CREATED) == 0)
2067 continue;
2068
2069 if (s == htab->splt
2070 || s == htab->sgot
2071 || s == htab->sgotplt
2072 || s == htab->sdynbss)
2073 {
2074 /* Strip this section if we don't need it; see the
2075 comment below. */
2076 }
2077 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2078 {
2079 if (s->size != 0)
2080 relocs = TRUE;
2081
2082 /* We use the reloc_count field as a counter if we need
2083 to copy relocs into the output file. */
2084 s->reloc_count = 0;
2085 }
2086 else
2087 {
2088 /* It's not one of our sections, so don't allocate space. */
2089 continue;
2090 }
2091
2092 if (s->size == 0)
2093 {
2094 /* If we don't need this section, strip it from the
2095 output file. This is to handle .rela.bss and
2096 .rela.plt. We must create it in
2097 create_dynamic_sections, because it must be created
2098 before the linker maps input sections to output
2099 sections. The linker does that before
2100 adjust_dynamic_symbol is called, and it is that
2101 function which decides whether anything needs to go
2102 into these sections. */
2103
2104 s->flags |= SEC_EXCLUDE;
2105 continue;
2106 }
2107
2108 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2109 continue;
2110
2111 /* Allocate memory for the section contents. We use bfd_zalloc
2112 here in case unused entries are not reclaimed before the
2113 section's contents are written out. This should not happen,
2114 but this way if it does, we get a R_390_NONE reloc instead
2115 of garbage. */
2116 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2117 if (s->contents == NULL)
2118 return FALSE;
2119 }
2120
2121 if (htab->elf.dynamic_sections_created)
2122 {
2123 /* Add some entries to the .dynamic section. We fill in the
2124 values later, in elf_s390_finish_dynamic_sections, but we
2125 must add the entries now so that we get the correct size for
2126 the .dynamic section. The DT_DEBUG entry is filled in by the
2127 dynamic linker and used by the debugger. */
2128 #define add_dynamic_entry(TAG, VAL) \
2129 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2130
2131 if (info->executable)
2132 {
2133 if (!add_dynamic_entry (DT_DEBUG, 0))
2134 return FALSE;
2135 }
2136
2137 if (htab->splt->size != 0)
2138 {
2139 if (!add_dynamic_entry (DT_PLTGOT, 0)
2140 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2141 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2142 || !add_dynamic_entry (DT_JMPREL, 0))
2143 return FALSE;
2144 }
2145
2146 if (relocs)
2147 {
2148 if (!add_dynamic_entry (DT_RELA, 0)
2149 || !add_dynamic_entry (DT_RELASZ, 0)
2150 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2151 return FALSE;
2152
2153 /* If any dynamic relocs apply to a read-only section,
2154 then we need a DT_TEXTREL entry. */
2155 if ((info->flags & DF_TEXTREL) == 0)
2156 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2157 (PTR) info);
2158
2159 if ((info->flags & DF_TEXTREL) != 0)
2160 {
2161 if (!add_dynamic_entry (DT_TEXTREL, 0))
2162 return FALSE;
2163 }
2164 }
2165 }
2166 #undef add_dynamic_entry
2167
2168 return TRUE;
2169 }
2170
2171 /* Return the base VMA address which should be subtracted from real addresses
2172 when resolving @dtpoff relocation.
2173 This is PT_TLS segment p_vaddr. */
2174
2175 static bfd_vma
2176 dtpoff_base (info)
2177 struct bfd_link_info *info;
2178 {
2179 /* If tls_sec is NULL, we should have signalled an error already. */
2180 if (elf_hash_table (info)->tls_sec == NULL)
2181 return 0;
2182 return elf_hash_table (info)->tls_sec->vma;
2183 }
2184
2185 /* Return the relocation value for @tpoff relocation
2186 if STT_TLS virtual address is ADDRESS. */
2187
2188 static bfd_vma
2189 tpoff (info, address)
2190 struct bfd_link_info *info;
2191 bfd_vma address;
2192 {
2193 struct elf_link_hash_table *htab = elf_hash_table (info);
2194
2195 /* If tls_sec is NULL, we should have signalled an error already. */
2196 if (htab->tls_sec == NULL)
2197 return 0;
2198 return htab->tls_size + htab->tls_sec->vma - address;
2199 }
2200
2201 /* Complain if TLS instruction relocation is against an invalid
2202 instruction. */
2203
2204 static void
2205 invalid_tls_insn (input_bfd, input_section, rel)
2206 bfd *input_bfd;
2207 asection *input_section;
2208 Elf_Internal_Rela *rel;
2209 {
2210 reloc_howto_type *howto;
2211
2212 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2213 (*_bfd_error_handler)
2214 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2215 input_bfd,
2216 input_section,
2217 (long) rel->r_offset,
2218 howto->name);
2219 bfd_set_error (bfd_error_bad_value);
2220 }
2221
2222 /* Relocate a 390 ELF section. */
2223
2224 static bfd_boolean
2225 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2226 contents, relocs, local_syms, local_sections)
2227 bfd *output_bfd;
2228 struct bfd_link_info *info;
2229 bfd *input_bfd;
2230 asection *input_section;
2231 bfd_byte *contents;
2232 Elf_Internal_Rela *relocs;
2233 Elf_Internal_Sym *local_syms;
2234 asection **local_sections;
2235 {
2236 struct elf_s390_link_hash_table *htab;
2237 Elf_Internal_Shdr *symtab_hdr;
2238 struct elf_link_hash_entry **sym_hashes;
2239 bfd_vma *local_got_offsets;
2240 Elf_Internal_Rela *rel;
2241 Elf_Internal_Rela *relend;
2242
2243 BFD_ASSERT (is_s390_elf (input_bfd));
2244
2245 htab = elf_s390_hash_table (info);
2246 symtab_hdr = &elf_symtab_hdr (input_bfd);
2247 sym_hashes = elf_sym_hashes (input_bfd);
2248 local_got_offsets = elf_local_got_offsets (input_bfd);
2249
2250 rel = relocs;
2251 relend = relocs + input_section->reloc_count;
2252 for (; rel < relend; rel++)
2253 {
2254 unsigned int r_type;
2255 reloc_howto_type *howto;
2256 unsigned long r_symndx;
2257 struct elf_link_hash_entry *h;
2258 Elf_Internal_Sym *sym;
2259 asection *sec;
2260 bfd_vma off;
2261 bfd_vma relocation;
2262 bfd_boolean unresolved_reloc;
2263 bfd_reloc_status_type r;
2264 int tls_type;
2265
2266 r_type = ELF32_R_TYPE (rel->r_info);
2267 if (r_type == (int) R_390_GNU_VTINHERIT
2268 || r_type == (int) R_390_GNU_VTENTRY)
2269 continue;
2270 if (r_type >= (int) R_390_max)
2271 {
2272 bfd_set_error (bfd_error_bad_value);
2273 return FALSE;
2274 }
2275
2276 howto = elf_howto_table + r_type;
2277 r_symndx = ELF32_R_SYM (rel->r_info);
2278
2279 h = NULL;
2280 sym = NULL;
2281 sec = NULL;
2282 unresolved_reloc = FALSE;
2283 if (r_symndx < symtab_hdr->sh_info)
2284 {
2285 sym = local_syms + r_symndx;
2286 sec = local_sections[r_symndx];
2287 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2288 }
2289 else
2290 {
2291 bfd_boolean warned ATTRIBUTE_UNUSED;
2292
2293 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2294 r_symndx, symtab_hdr, sym_hashes,
2295 h, sec, relocation,
2296 unresolved_reloc, warned);
2297 }
2298
2299 if (sec != NULL && elf_discarded_section (sec))
2300 {
2301 /* For relocs against symbols from removed linkonce sections,
2302 or sections discarded by a linker script, we just want the
2303 section contents zeroed. Avoid any special processing. */
2304 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2305 rel->r_info = 0;
2306 rel->r_addend = 0;
2307 continue;
2308 }
2309
2310 if (info->relocatable)
2311 continue;
2312
2313 switch (r_type)
2314 {
2315 case R_390_GOTPLT12:
2316 case R_390_GOTPLT16:
2317 case R_390_GOTPLT20:
2318 case R_390_GOTPLT32:
2319 case R_390_GOTPLTENT:
2320 /* There are three cases for a GOTPLT relocation. 1) The
2321 relocation is against the jump slot entry of a plt that
2322 will get emitted to the output file. 2) The relocation
2323 is against the jump slot of a plt entry that has been
2324 removed. elf_s390_adjust_gotplt has created a GOT entry
2325 as replacement. 3) The relocation is against a local symbol.
2326 Cases 2) and 3) are the same as the GOT relocation code
2327 so we just have to test for case 1 and fall through for
2328 the other two. */
2329 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2330 {
2331 bfd_vma plt_index;
2332
2333 /* Calc. index no.
2334 Current offset - size first entry / entry size. */
2335 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2336 PLT_ENTRY_SIZE;
2337
2338 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2339 addr & GOT addr. */
2340 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2341 unresolved_reloc = FALSE;
2342
2343 if (r_type == R_390_GOTPLTENT)
2344 relocation += htab->sgot->output_section->vma;
2345 break;
2346 }
2347 /* Fall through. */
2348
2349 case R_390_GOT12:
2350 case R_390_GOT16:
2351 case R_390_GOT20:
2352 case R_390_GOT32:
2353 case R_390_GOTENT:
2354 /* Relocation is to the entry for this symbol in the global
2355 offset table. */
2356 if (htab->sgot == NULL)
2357 abort ();
2358
2359 if (h != NULL)
2360 {
2361 bfd_boolean dyn;
2362
2363 off = h->got.offset;
2364 dyn = htab->elf.dynamic_sections_created;
2365 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2366 || (info->shared
2367 && (info->symbolic
2368 || h->dynindx == -1
2369 || h->forced_local)
2370 && h->def_regular)
2371 || (ELF_ST_VISIBILITY (h->other)
2372 && h->root.type == bfd_link_hash_undefweak))
2373 {
2374 /* This is actually a static link, or it is a
2375 -Bsymbolic link and the symbol is defined
2376 locally, or the symbol was forced to be local
2377 because of a version file. We must initialize
2378 this entry in the global offset table. Since the
2379 offset must always be a multiple of 2, we use the
2380 least significant bit to record whether we have
2381 initialized it already.
2382
2383 When doing a dynamic link, we create a .rel.got
2384 relocation entry to initialize the value. This
2385 is done in the finish_dynamic_symbol routine. */
2386 if ((off & 1) != 0)
2387 off &= ~1;
2388 else
2389 {
2390 bfd_put_32 (output_bfd, relocation,
2391 htab->sgot->contents + off);
2392 h->got.offset |= 1;
2393 }
2394 }
2395 else
2396 unresolved_reloc = FALSE;
2397 }
2398 else
2399 {
2400 if (local_got_offsets == NULL)
2401 abort ();
2402
2403 off = local_got_offsets[r_symndx];
2404
2405 /* The offset must always be a multiple of 4. We use
2406 the least significant bit to record whether we have
2407 already generated the necessary reloc. */
2408 if ((off & 1) != 0)
2409 off &= ~1;
2410 else
2411 {
2412 bfd_put_32 (output_bfd, relocation,
2413 htab->sgot->contents + off);
2414
2415 if (info->shared)
2416 {
2417 asection *srelgot;
2418 Elf_Internal_Rela outrel;
2419 bfd_byte *loc;
2420
2421 srelgot = htab->srelgot;
2422 if (srelgot == NULL)
2423 abort ();
2424
2425 outrel.r_offset = (htab->sgot->output_section->vma
2426 + htab->sgot->output_offset
2427 + off);
2428 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2429 outrel.r_addend = relocation;
2430 loc = srelgot->contents;
2431 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2432 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2433 }
2434
2435 local_got_offsets[r_symndx] |= 1;
2436 }
2437 }
2438
2439 if (off >= (bfd_vma) -2)
2440 abort ();
2441
2442 relocation = htab->sgot->output_offset + off;
2443
2444 /* For @GOTENT the relocation is against the offset between
2445 the instruction and the symbols entry in the GOT and not
2446 between the start of the GOT and the symbols entry. We
2447 add the vma of the GOT to get the correct value. */
2448 if ( r_type == R_390_GOTENT
2449 || r_type == R_390_GOTPLTENT)
2450 relocation += htab->sgot->output_section->vma;
2451
2452 break;
2453
2454 case R_390_GOTOFF16:
2455 case R_390_GOTOFF32:
2456 /* Relocation is relative to the start of the global offset
2457 table. */
2458
2459 /* Note that sgot->output_offset is not involved in this
2460 calculation. We always want the start of .got. If we
2461 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2462 permitted by the ABI, we might have to change this
2463 calculation. */
2464 relocation -= htab->sgot->output_section->vma;
2465 break;
2466
2467 case R_390_GOTPC:
2468 case R_390_GOTPCDBL:
2469 /* Use global offset table as symbol value. */
2470 relocation = htab->sgot->output_section->vma;
2471 unresolved_reloc = FALSE;
2472 break;
2473
2474 case R_390_PLT16DBL:
2475 case R_390_PLT32DBL:
2476 case R_390_PLT32:
2477 /* Relocation is to the entry for this symbol in the
2478 procedure linkage table. */
2479
2480 /* Resolve a PLT32 reloc against a local symbol directly,
2481 without using the procedure linkage table. */
2482 if (h == NULL)
2483 break;
2484
2485 if (h->plt.offset == (bfd_vma) -1
2486 || htab->splt == NULL)
2487 {
2488 /* We didn't make a PLT entry for this symbol. This
2489 happens when statically linking PIC code, or when
2490 using -Bsymbolic. */
2491 break;
2492 }
2493
2494 relocation = (htab->splt->output_section->vma
2495 + htab->splt->output_offset
2496 + h->plt.offset);
2497 unresolved_reloc = FALSE;
2498 break;
2499
2500 case R_390_PLTOFF16:
2501 case R_390_PLTOFF32:
2502 /* Relocation is to the entry for this symbol in the
2503 procedure linkage table relative to the start of the GOT. */
2504
2505 /* For local symbols or if we didn't make a PLT entry for
2506 this symbol resolve the symbol directly. */
2507 if ( h == NULL
2508 || h->plt.offset == (bfd_vma) -1
2509 || htab->splt == NULL)
2510 {
2511 relocation -= htab->sgot->output_section->vma;
2512 break;
2513 }
2514
2515 relocation = (htab->splt->output_section->vma
2516 + htab->splt->output_offset
2517 + h->plt.offset
2518 - htab->sgot->output_section->vma);
2519 unresolved_reloc = FALSE;
2520 break;
2521
2522 case R_390_8:
2523 case R_390_16:
2524 case R_390_32:
2525 case R_390_PC16:
2526 case R_390_PC16DBL:
2527 case R_390_PC32DBL:
2528 case R_390_PC32:
2529 if ((input_section->flags & SEC_ALLOC) == 0)
2530 break;
2531
2532 if ((info->shared
2533 && (h == NULL
2534 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2535 || h->root.type != bfd_link_hash_undefweak)
2536 && ((r_type != R_390_PC16
2537 && r_type != R_390_PC16DBL
2538 && r_type != R_390_PC32DBL
2539 && r_type != R_390_PC32)
2540 || (h != NULL
2541 && !SYMBOL_REFERENCES_LOCAL (info, h))))
2542 || (ELIMINATE_COPY_RELOCS
2543 && !info->shared
2544 && h != NULL
2545 && h->dynindx != -1
2546 && !h->non_got_ref
2547 && ((h->def_dynamic
2548 && !h->def_regular)
2549 || h->root.type == bfd_link_hash_undefweak
2550 || h->root.type == bfd_link_hash_undefined)))
2551 {
2552 Elf_Internal_Rela outrel;
2553 bfd_boolean skip, relocate;
2554 asection *sreloc;
2555 bfd_byte *loc;
2556
2557 /* When generating a shared object, these relocations
2558 are copied into the output file to be resolved at run
2559 time. */
2560
2561 skip = FALSE;
2562 relocate = FALSE;
2563
2564 outrel.r_offset =
2565 _bfd_elf_section_offset (output_bfd, info, input_section,
2566 rel->r_offset);
2567 if (outrel.r_offset == (bfd_vma) -1)
2568 skip = TRUE;
2569 else if (outrel.r_offset == (bfd_vma) -2)
2570 skip = TRUE, relocate = TRUE;
2571 outrel.r_offset += (input_section->output_section->vma
2572 + input_section->output_offset);
2573
2574 if (skip)
2575 memset (&outrel, 0, sizeof outrel);
2576 else if (h != NULL
2577 && h->dynindx != -1
2578 && (r_type == R_390_PC16
2579 || r_type == R_390_PC16DBL
2580 || r_type == R_390_PC32DBL
2581 || r_type == R_390_PC32
2582 || !info->shared
2583 || !info->symbolic
2584 || !h->def_regular))
2585 {
2586 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2587 outrel.r_addend = rel->r_addend;
2588 }
2589 else
2590 {
2591 /* This symbol is local, or marked to become local. */
2592 outrel.r_addend = relocation + rel->r_addend;
2593 if (r_type == R_390_32)
2594 {
2595 relocate = TRUE;
2596 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2597 }
2598 else
2599 {
2600 long sindx;
2601
2602 if (bfd_is_abs_section (sec))
2603 sindx = 0;
2604 else if (sec == NULL || sec->owner == NULL)
2605 {
2606 bfd_set_error(bfd_error_bad_value);
2607 return FALSE;
2608 }
2609 else
2610 {
2611 asection *osec;
2612
2613 osec = sec->output_section;
2614 sindx = elf_section_data (osec)->dynindx;
2615 if (sindx == 0)
2616 {
2617 osec = htab->elf.text_index_section;
2618 sindx = elf_section_data (osec)->dynindx;
2619 }
2620 BFD_ASSERT (sindx != 0);
2621
2622 /* We are turning this relocation into one
2623 against a section symbol, so subtract out
2624 the output section's address but not the
2625 offset of the input section in the output
2626 section. */
2627 outrel.r_addend -= osec->vma;
2628 }
2629 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2630 }
2631 }
2632
2633 sreloc = elf_section_data (input_section)->sreloc;
2634 if (sreloc == NULL)
2635 abort ();
2636
2637 loc = sreloc->contents;
2638 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2639 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2640
2641 /* If this reloc is against an external symbol, we do
2642 not want to fiddle with the addend. Otherwise, we
2643 need to include the symbol value so that it becomes
2644 an addend for the dynamic reloc. */
2645 if (! relocate)
2646 continue;
2647 }
2648 break;
2649
2650 /* Relocations for tls literal pool entries. */
2651 case R_390_TLS_IE32:
2652 if (info->shared)
2653 {
2654 Elf_Internal_Rela outrel;
2655 asection *sreloc;
2656 bfd_byte *loc;
2657
2658 outrel.r_offset = rel->r_offset
2659 + input_section->output_section->vma
2660 + input_section->output_offset;
2661 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2662 sreloc = elf_section_data (input_section)->sreloc;
2663 if (sreloc == NULL)
2664 abort ();
2665 loc = sreloc->contents;
2666 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2667 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2668 }
2669 /* Fall through. */
2670
2671 case R_390_TLS_GD32:
2672 case R_390_TLS_GOTIE32:
2673 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2674 tls_type = GOT_UNKNOWN;
2675 if (h == NULL && local_got_offsets)
2676 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2677 else if (h != NULL)
2678 {
2679 tls_type = elf_s390_hash_entry(h)->tls_type;
2680 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2681 r_type = R_390_TLS_LE32;
2682 }
2683 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2684 r_type = R_390_TLS_IE32;
2685
2686 if (r_type == R_390_TLS_LE32)
2687 {
2688 /* This relocation gets optimized away by the local exec
2689 access optimization. */
2690 BFD_ASSERT (! unresolved_reloc);
2691 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2692 contents + rel->r_offset);
2693 continue;
2694 }
2695
2696 if (htab->sgot == NULL)
2697 abort ();
2698
2699 if (h != NULL)
2700 off = h->got.offset;
2701 else
2702 {
2703 if (local_got_offsets == NULL)
2704 abort ();
2705
2706 off = local_got_offsets[r_symndx];
2707 }
2708
2709 emit_tls_relocs:
2710
2711 if ((off & 1) != 0)
2712 off &= ~1;
2713 else
2714 {
2715 Elf_Internal_Rela outrel;
2716 bfd_byte *loc;
2717 int dr_type, indx;
2718
2719 if (htab->srelgot == NULL)
2720 abort ();
2721
2722 outrel.r_offset = (htab->sgot->output_section->vma
2723 + htab->sgot->output_offset + off);
2724
2725 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2726 if (r_type == R_390_TLS_GD32)
2727 dr_type = R_390_TLS_DTPMOD;
2728 else
2729 dr_type = R_390_TLS_TPOFF;
2730 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2731 outrel.r_addend = relocation - dtpoff_base (info);
2732 else
2733 outrel.r_addend = 0;
2734 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2735 loc = htab->srelgot->contents;
2736 loc += htab->srelgot->reloc_count++
2737 * sizeof (Elf32_External_Rela);
2738 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2739
2740 if (r_type == R_390_TLS_GD32)
2741 {
2742 if (indx == 0)
2743 {
2744 BFD_ASSERT (! unresolved_reloc);
2745 bfd_put_32 (output_bfd,
2746 relocation - dtpoff_base (info),
2747 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2748 }
2749 else
2750 {
2751 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2752 outrel.r_offset += GOT_ENTRY_SIZE;
2753 outrel.r_addend = 0;
2754 htab->srelgot->reloc_count++;
2755 loc += sizeof (Elf32_External_Rela);
2756 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2757 }
2758 }
2759
2760 if (h != NULL)
2761 h->got.offset |= 1;
2762 else
2763 local_got_offsets[r_symndx] |= 1;
2764 }
2765
2766 if (off >= (bfd_vma) -2)
2767 abort ();
2768 if (r_type == ELF32_R_TYPE (rel->r_info))
2769 {
2770 relocation = htab->sgot->output_offset + off;
2771 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2772 relocation += htab->sgot->output_section->vma;
2773 unresolved_reloc = FALSE;
2774 }
2775 else
2776 {
2777 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2778 contents + rel->r_offset);
2779 continue;
2780 }
2781 break;
2782
2783 case R_390_TLS_GOTIE12:
2784 case R_390_TLS_GOTIE20:
2785 case R_390_TLS_IEENT:
2786 if (h == NULL)
2787 {
2788 if (local_got_offsets == NULL)
2789 abort();
2790 off = local_got_offsets[r_symndx];
2791 if (info->shared)
2792 goto emit_tls_relocs;
2793 }
2794 else
2795 {
2796 off = h->got.offset;
2797 tls_type = elf_s390_hash_entry(h)->tls_type;
2798 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2799 goto emit_tls_relocs;
2800 }
2801
2802 if (htab->sgot == NULL)
2803 abort ();
2804
2805 BFD_ASSERT (! unresolved_reloc);
2806 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2807 htab->sgot->contents + off);
2808 relocation = htab->sgot->output_offset + off;
2809 if (r_type == R_390_TLS_IEENT)
2810 relocation += htab->sgot->output_section->vma;
2811 unresolved_reloc = FALSE;
2812 break;
2813
2814 case R_390_TLS_LDM32:
2815 if (! info->shared)
2816 /* The literal pool entry this relocation refers to gets ignored
2817 by the optimized code of the local exec model. Do nothing
2818 and the value will turn out zero. */
2819 continue;
2820
2821 if (htab->sgot == NULL)
2822 abort ();
2823
2824 off = htab->tls_ldm_got.offset;
2825 if (off & 1)
2826 off &= ~1;
2827 else
2828 {
2829 Elf_Internal_Rela outrel;
2830 bfd_byte *loc;
2831
2832 if (htab->srelgot == NULL)
2833 abort ();
2834
2835 outrel.r_offset = (htab->sgot->output_section->vma
2836 + htab->sgot->output_offset + off);
2837
2838 bfd_put_32 (output_bfd, 0,
2839 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2840 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2841 outrel.r_addend = 0;
2842 loc = htab->srelgot->contents;
2843 loc += htab->srelgot->reloc_count++
2844 * sizeof (Elf32_External_Rela);
2845 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2846 htab->tls_ldm_got.offset |= 1;
2847 }
2848 relocation = htab->sgot->output_offset + off;
2849 unresolved_reloc = FALSE;
2850 break;
2851
2852 case R_390_TLS_LE32:
2853 if (info->shared)
2854 {
2855 /* Linking a shared library with non-fpic code requires
2856 a R_390_TLS_TPOFF relocation. */
2857 Elf_Internal_Rela outrel;
2858 asection *sreloc;
2859 bfd_byte *loc;
2860 int indx;
2861
2862 outrel.r_offset = rel->r_offset
2863 + input_section->output_section->vma
2864 + input_section->output_offset;
2865 if (h != NULL && h->dynindx != -1)
2866 indx = h->dynindx;
2867 else
2868 indx = 0;
2869 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2870 if (indx == 0)
2871 outrel.r_addend = relocation - dtpoff_base (info);
2872 else
2873 outrel.r_addend = 0;
2874 sreloc = elf_section_data (input_section)->sreloc;
2875 if (sreloc == NULL)
2876 abort ();
2877 loc = sreloc->contents;
2878 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2879 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2880 }
2881 else
2882 {
2883 BFD_ASSERT (! unresolved_reloc);
2884 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2885 contents + rel->r_offset);
2886 }
2887 continue;
2888
2889 case R_390_TLS_LDO32:
2890 if (info->shared)
2891 relocation -= dtpoff_base (info);
2892 else
2893 /* When converting LDO to LE, we must negate. */
2894 relocation = -tpoff (info, relocation);
2895 break;
2896
2897 /* Relocations for tls instructions. */
2898 case R_390_TLS_LOAD:
2899 case R_390_TLS_GDCALL:
2900 case R_390_TLS_LDCALL:
2901 tls_type = GOT_UNKNOWN;
2902 if (h == NULL && local_got_offsets)
2903 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2904 else if (h != NULL)
2905 tls_type = elf_s390_hash_entry(h)->tls_type;
2906
2907 if (tls_type == GOT_TLS_GD)
2908 continue;
2909
2910 if (r_type == R_390_TLS_LOAD)
2911 {
2912 if (!info->shared && (h == NULL || h->dynindx == -1))
2913 {
2914 /* IE->LE transition. Four valid cases:
2915 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2916 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2917 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2918 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2919 unsigned int insn, ry;
2920
2921 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2922 ry = 0;
2923 if ((insn & 0xff00f000) == 0x58000000)
2924 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2925 ry = (insn & 0x000f0000);
2926 else if ((insn & 0xff0f0000) == 0x58000000)
2927 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2928 ry = (insn & 0x0000f000) << 4;
2929 else if ((insn & 0xff00f000) == 0x5800c000)
2930 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2931 ry = (insn & 0x000f0000);
2932 else if ((insn & 0xff0f0000) == 0x580c0000)
2933 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2934 ry = (insn & 0x0000f000) << 4;
2935 else
2936 invalid_tls_insn (input_bfd, input_section, rel);
2937 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2938 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2939 }
2940 }
2941 else if (r_type == R_390_TLS_GDCALL)
2942 {
2943 unsigned int insn;
2944
2945 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2946 if ((insn & 0xff000fff) != 0x4d000000 &&
2947 (insn & 0xffff0000) != 0xc0e50000)
2948 invalid_tls_insn (input_bfd, input_section, rel);
2949 if (!info->shared && (h == NULL || h->dynindx == -1))
2950 {
2951 if ((insn & 0xff000000) == 0x4d000000)
2952 {
2953 /* GD->LE transition.
2954 bas %r14,0(%rx,%r13) -> bc 0,0 */
2955 insn = 0x47000000;
2956 }
2957 else
2958 {
2959 /* GD->LE transition.
2960 brasl %r14,_tls_get_addr@plt -> brcl 0,. */
2961 insn = 0xc0040000;
2962 bfd_put_16 (output_bfd, 0x0000,
2963 contents + rel->r_offset + 4);
2964 }
2965 }
2966 else
2967 {
2968 if ((insn & 0xff000000) == 0x4d000000)
2969 {
2970 /* GD->IE transition.
2971 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2972 insn = 0x5822c000;
2973 }
2974 else
2975 {
2976 /* GD->IE transition.
2977 brasl %r14,__tls_get_addr@plt ->
2978 l %r2,0(%r2,%r12) ; bcr 0,0 */
2979 insn = 0x5822c000;
2980 bfd_put_16 (output_bfd, 0x0700,
2981 contents + rel->r_offset + 4);
2982 }
2983 }
2984 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2985 }
2986 else if (r_type == R_390_TLS_LDCALL)
2987 {
2988 if (!info->shared)
2989 {
2990 unsigned int insn;
2991
2992 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2993 if ((insn & 0xff000fff) != 0x4d000000 &&
2994 (insn & 0xffff0000) != 0xc0e50000)
2995 invalid_tls_insn (input_bfd, input_section, rel);
2996 if ((insn & 0xff000000) == 0x4d000000)
2997 {
2998 /* LD->LE transition.
2999 bas %r14,0(%rx,%r13) -> bc 0,0 */
3000 insn = 0x47000000;
3001 }
3002 else
3003 {
3004 /* LD->LE transition.
3005 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3006 insn = 0xc0040000;
3007 bfd_put_16 (output_bfd, 0x0000,
3008 contents + rel->r_offset + 4);
3009 }
3010 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3011 }
3012 }
3013 continue;
3014
3015 default:
3016 break;
3017 }
3018
3019 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3020 because such sections are not SEC_ALLOC and thus ld.so will
3021 not process them. */
3022 if (unresolved_reloc
3023 && !((input_section->flags & SEC_DEBUGGING) != 0
3024 && h->def_dynamic))
3025 (*_bfd_error_handler)
3026 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3027 input_bfd,
3028 input_section,
3029 (long) rel->r_offset,
3030 howto->name,
3031 h->root.root.string);
3032
3033 if (r_type == R_390_20
3034 || r_type == R_390_GOT20
3035 || r_type == R_390_GOTPLT20
3036 || r_type == R_390_TLS_GOTIE20)
3037 {
3038 relocation += rel->r_addend;
3039 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3040 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3041 contents, rel->r_offset,
3042 relocation, 0);
3043 }
3044 else
3045 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3046 contents, rel->r_offset,
3047 relocation, rel->r_addend);
3048
3049 if (r != bfd_reloc_ok)
3050 {
3051 const char *name;
3052
3053 if (h != NULL)
3054 name = h->root.root.string;
3055 else
3056 {
3057 name = bfd_elf_string_from_elf_section (input_bfd,
3058 symtab_hdr->sh_link,
3059 sym->st_name);
3060 if (name == NULL)
3061 return FALSE;
3062 if (*name == '\0')
3063 name = bfd_section_name (input_bfd, sec);
3064 }
3065
3066 if (r == bfd_reloc_overflow)
3067 {
3068
3069 if (! ((*info->callbacks->reloc_overflow)
3070 (info, (h ? &h->root : NULL), name, howto->name,
3071 (bfd_vma) 0, input_bfd, input_section,
3072 rel->r_offset)))
3073 return FALSE;
3074 }
3075 else
3076 {
3077 (*_bfd_error_handler)
3078 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3079 input_bfd, input_section,
3080 (long) rel->r_offset, name, (int) r);
3081 return FALSE;
3082 }
3083 }
3084 }
3085
3086 return TRUE;
3087 }
3088
3089 /* Finish up dynamic symbol handling. We set the contents of various
3090 dynamic sections here. */
3091
3092 static bfd_boolean
3093 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3094 bfd *output_bfd;
3095 struct bfd_link_info *info;
3096 struct elf_link_hash_entry *h;
3097 Elf_Internal_Sym *sym;
3098 {
3099 struct elf_s390_link_hash_table *htab;
3100
3101 htab = elf_s390_hash_table (info);
3102
3103 if (h->plt.offset != (bfd_vma) -1)
3104 {
3105 bfd_vma plt_index;
3106 bfd_vma got_offset;
3107 Elf_Internal_Rela rela;
3108 bfd_byte *loc;
3109 bfd_vma relative_offset;
3110
3111 /* This symbol has an entry in the procedure linkage table. Set
3112 it up. */
3113 if (h->dynindx == -1
3114 || htab->splt == NULL
3115 || htab->sgotplt == NULL
3116 || htab->srelplt == NULL)
3117 abort ();
3118
3119 /* Calc. index no.
3120 Current offset - size first entry / entry size. */
3121 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3122
3123 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3124 addr & GOT addr. */
3125 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3126
3127 /* S390 uses halfwords for relative branch calc! */
3128 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3129 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3130 /* If offset is > 32768, branch to a previous branch
3131 390 can only handle +-64 K jumps. */
3132 if ( -32768 > (int) relative_offset )
3133 relative_offset
3134 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3135
3136 /* Fill in the entry in the procedure linkage table. */
3137 if (!info->shared)
3138 {
3139 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3140 htab->splt->contents + h->plt.offset);
3141 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3142 htab->splt->contents + h->plt.offset + 4);
3143 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3144 htab->splt->contents + h->plt.offset + 8);
3145 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3146 htab->splt->contents + h->plt.offset + 12);
3147 bfd_put_32 (output_bfd, (bfd_vma) PLT_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,
3152 (htab->sgotplt->output_section->vma
3153 + htab->sgotplt->output_offset
3154 + got_offset),
3155 htab->splt->contents + h->plt.offset + 24);
3156 }
3157 else if (got_offset < 4096)
3158 {
3159 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
3160 htab->splt->contents + h->plt.offset);
3161 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
3162 htab->splt->contents + h->plt.offset + 4);
3163 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
3164 htab->splt->contents + h->plt.offset + 8);
3165 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
3166 htab->splt->contents + h->plt.offset + 12);
3167 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
3168 htab->splt->contents + h->plt.offset + 16);
3169 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3170 htab->splt->contents + h->plt.offset + 20);
3171 bfd_put_32 (output_bfd, (bfd_vma) 0,
3172 htab->splt->contents + h->plt.offset + 24);
3173 }
3174 else if (got_offset < 32768)
3175 {
3176 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
3177 htab->splt->contents + h->plt.offset);
3178 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
3179 htab->splt->contents + h->plt.offset + 4);
3180 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
3181 htab->splt->contents + h->plt.offset + 8);
3182 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
3183 htab->splt->contents + h->plt.offset + 12);
3184 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
3185 htab->splt->contents + h->plt.offset + 16);
3186 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3187 htab->splt->contents + h->plt.offset + 20);
3188 bfd_put_32 (output_bfd, (bfd_vma) 0,
3189 htab->splt->contents + h->plt.offset + 24);
3190 }
3191 else
3192 {
3193 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
3194 htab->splt->contents + h->plt.offset);
3195 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
3196 htab->splt->contents + h->plt.offset + 4);
3197 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
3198 htab->splt->contents + h->plt.offset + 8);
3199 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
3200 htab->splt->contents + h->plt.offset + 12);
3201 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
3202 htab->splt->contents + h->plt.offset + 16);
3203 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3204 htab->splt->contents + h->plt.offset + 20);
3205 bfd_put_32 (output_bfd, got_offset,
3206 htab->splt->contents + h->plt.offset + 24);
3207 }
3208 /* Insert offset into reloc. table here. */
3209 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3210 htab->splt->contents + h->plt.offset + 28);
3211
3212 /* Fill in the entry in the global offset table.
3213 Points to instruction after GOT offset. */
3214 bfd_put_32 (output_bfd,
3215 (htab->splt->output_section->vma
3216 + htab->splt->output_offset
3217 + h->plt.offset
3218 + 12),
3219 htab->sgotplt->contents + got_offset);
3220
3221 /* Fill in the entry in the .rela.plt section. */
3222 rela.r_offset = (htab->sgotplt->output_section->vma
3223 + htab->sgotplt->output_offset
3224 + got_offset);
3225 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3226 rela.r_addend = 0;
3227 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3228 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3229
3230 if (!h->def_regular)
3231 {
3232 /* Mark the symbol as undefined, rather than as defined in
3233 the .plt section. Leave the value alone. This is a clue
3234 for the dynamic linker, to make function pointer
3235 comparisons work between an application and shared
3236 library. */
3237 sym->st_shndx = SHN_UNDEF;
3238 }
3239 }
3240
3241 if (h->got.offset != (bfd_vma) -1
3242 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3243 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3244 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3245 {
3246 Elf_Internal_Rela rela;
3247 bfd_byte *loc;
3248
3249 /* This symbol has an entry in the global offset table. Set it
3250 up. */
3251
3252 if (htab->sgot == NULL || htab->srelgot == NULL)
3253 abort ();
3254
3255 rela.r_offset = (htab->sgot->output_section->vma
3256 + htab->sgot->output_offset
3257 + (h->got.offset &~ (bfd_vma) 1));
3258
3259 /* If this is a static link, or it is a -Bsymbolic link and the
3260 symbol is defined locally or was forced to be local because
3261 of a version file, we just want to emit a RELATIVE reloc.
3262 The entry in the global offset table will already have been
3263 initialized in the relocate_section function. */
3264 if (info->shared
3265 && (info->symbolic
3266 || h->dynindx == -1
3267 || h->forced_local)
3268 && h->def_regular)
3269 {
3270 BFD_ASSERT((h->got.offset & 1) != 0);
3271 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3272 rela.r_addend = (h->root.u.def.value
3273 + h->root.u.def.section->output_section->vma
3274 + h->root.u.def.section->output_offset);
3275 }
3276 else
3277 {
3278 BFD_ASSERT((h->got.offset & 1) == 0);
3279 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3280 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3281 rela.r_addend = 0;
3282 }
3283
3284 loc = htab->srelgot->contents;
3285 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3286 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3287 }
3288
3289 if (h->needs_copy)
3290 {
3291 Elf_Internal_Rela rela;
3292 bfd_byte *loc;
3293
3294 /* This symbols needs a copy reloc. Set it up. */
3295
3296 if (h->dynindx == -1
3297 || (h->root.type != bfd_link_hash_defined
3298 && h->root.type != bfd_link_hash_defweak)
3299 || htab->srelbss == NULL)
3300 abort ();
3301
3302 rela.r_offset = (h->root.u.def.value
3303 + h->root.u.def.section->output_section->vma
3304 + h->root.u.def.section->output_offset);
3305 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3306 rela.r_addend = 0;
3307 loc = htab->srelbss->contents;
3308 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3309 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3310 }
3311
3312 /* Mark some specially defined symbols as absolute. */
3313 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3314 || h == htab->elf.hgot
3315 || h == htab->elf.hplt)
3316 sym->st_shndx = SHN_ABS;
3317
3318 return TRUE;
3319 }
3320
3321 /* Used to decide how to sort relocs in an optimal manner for the
3322 dynamic linker, before writing them out. */
3323
3324 static enum elf_reloc_type_class
3325 elf_s390_reloc_type_class (rela)
3326 const Elf_Internal_Rela *rela;
3327 {
3328 switch ((int) ELF32_R_TYPE (rela->r_info))
3329 {
3330 case R_390_RELATIVE:
3331 return reloc_class_relative;
3332 case R_390_JMP_SLOT:
3333 return reloc_class_plt;
3334 case R_390_COPY:
3335 return reloc_class_copy;
3336 default:
3337 return reloc_class_normal;
3338 }
3339 }
3340
3341 /* Finish up the dynamic sections. */
3342
3343 static bfd_boolean
3344 elf_s390_finish_dynamic_sections (output_bfd, info)
3345 bfd *output_bfd;
3346 struct bfd_link_info *info;
3347 {
3348 struct elf_s390_link_hash_table *htab;
3349 bfd *dynobj;
3350 asection *sdyn;
3351
3352 htab = elf_s390_hash_table (info);
3353 dynobj = htab->elf.dynobj;
3354 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3355
3356 if (htab->elf.dynamic_sections_created)
3357 {
3358 Elf32_External_Dyn *dyncon, *dynconend;
3359
3360 if (sdyn == NULL || htab->sgot == NULL)
3361 abort ();
3362
3363 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3364 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3365 for (; dyncon < dynconend; dyncon++)
3366 {
3367 Elf_Internal_Dyn dyn;
3368 asection *s;
3369
3370 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3371
3372 switch (dyn.d_tag)
3373 {
3374 default:
3375 continue;
3376
3377 case DT_PLTGOT:
3378 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3379 break;
3380
3381 case DT_JMPREL:
3382 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3383 break;
3384
3385 case DT_PLTRELSZ:
3386 s = htab->srelplt->output_section;
3387 dyn.d_un.d_val = s->size;
3388 break;
3389 }
3390
3391 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3392 }
3393
3394 /* Fill in the special first entry in the procedure linkage table. */
3395 if (htab->splt && htab->splt->size > 0)
3396 {
3397 memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3398 if (info->shared)
3399 {
3400 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
3401 htab->splt->contents );
3402 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
3403 htab->splt->contents +4 );
3404 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
3405 htab->splt->contents +8 );
3406 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
3407 htab->splt->contents +12 );
3408 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
3409 htab->splt->contents +16 );
3410 }
3411 else
3412 {
3413 bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0,
3414 htab->splt->contents );
3415 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3416 htab->splt->contents +4 );
3417 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2,
3418 htab->splt->contents +8 );
3419 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3420 htab->splt->contents +12 );
3421 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3422 htab->splt->contents +16 );
3423 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3424 htab->splt->contents +20 );
3425 bfd_put_32 (output_bfd,
3426 htab->sgotplt->output_section->vma
3427 + htab->sgotplt->output_offset,
3428 htab->splt->contents + 24);
3429 }
3430 elf_section_data (htab->splt->output_section)
3431 ->this_hdr.sh_entsize = 4;
3432 }
3433
3434 }
3435
3436 if (htab->sgotplt)
3437 {
3438 /* Fill in the first three entries in the global offset table. */
3439 if (htab->sgotplt->size > 0)
3440 {
3441 bfd_put_32 (output_bfd,
3442 (sdyn == NULL ? (bfd_vma) 0
3443 : sdyn->output_section->vma + sdyn->output_offset),
3444 htab->sgotplt->contents);
3445 /* One entry for shared object struct ptr. */
3446 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
3447 /* One entry for _dl_runtime_resolve. */
3448 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3449 }
3450
3451 elf_section_data (htab->sgotplt->output_section)
3452 ->this_hdr.sh_entsize = 4;
3453 }
3454 return TRUE;
3455 }
3456
3457 static bfd_boolean
3458 elf_s390_grok_prstatus (abfd, note)
3459 bfd * abfd;
3460 Elf_Internal_Note * note;
3461 {
3462 int offset;
3463 unsigned int size;
3464
3465 switch (note->descsz)
3466 {
3467 default:
3468 return FALSE;
3469
3470 case 224: /* S/390 Linux. */
3471 /* pr_cursig */
3472 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3473
3474 /* pr_pid */
3475 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3476
3477 /* pr_reg */
3478 offset = 72;
3479 size = 144;
3480 break;
3481 }
3482
3483 /* Make a ".reg/999" section. */
3484 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3485 size, note->descpos + offset);
3486 }
3487
3488 /* Return address for Ith PLT stub in section PLT, for relocation REL
3489 or (bfd_vma) -1 if it should not be included. */
3490
3491 static bfd_vma
3492 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3493 const arelent *rel ATTRIBUTE_UNUSED)
3494 {
3495 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3496 }
3497
3498
3499 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3500 #define TARGET_BIG_NAME "elf32-s390"
3501 #define ELF_ARCH bfd_arch_s390
3502 #define ELF_MACHINE_CODE EM_S390
3503 #define ELF_MACHINE_ALT1 EM_S390_OLD
3504 #define ELF_MAXPAGESIZE 0x1000
3505
3506 #define elf_backend_can_gc_sections 1
3507 #define elf_backend_can_refcount 1
3508 #define elf_backend_want_got_plt 1
3509 #define elf_backend_plt_readonly 1
3510 #define elf_backend_want_plt_sym 0
3511 #define elf_backend_got_header_size 12
3512 #define elf_backend_rela_normal 1
3513
3514 #define elf_info_to_howto elf_s390_info_to_howto
3515
3516 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3517 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3518 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3519 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3520
3521 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3522 #define elf_backend_check_relocs elf_s390_check_relocs
3523 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3524 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3525 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3526 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3527 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3528 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3529 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3530 #define elf_backend_relocate_section elf_s390_relocate_section
3531 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3532 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3533 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3534 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3535 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3536
3537 #define bfd_elf32_mkobject elf_s390_mkobject
3538 #define elf_backend_object_p elf_s390_object_p
3539
3540 #include "elf32-target.h"
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