projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
2004-03-03 H.J. Lu <hongjiu.lu@intel.com>
[deliverable/binutils-gdb.git] / bfd / elf64-s390.c
1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA. */
21
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27
28 static reloc_howto_type *elf_s390_reloc_type_lookup
29 PARAMS ((bfd *, bfd_reloc_code_real_type));
30 static void elf_s390_info_to_howto
31 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
32 static bfd_boolean elf_s390_is_local_label_name
33 PARAMS ((bfd *, const char *));
34 static struct bfd_hash_entry *link_hash_newfunc
35 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
36 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
37 PARAMS ((bfd *));
38 static bfd_boolean create_got_section
39 PARAMS((bfd *, struct bfd_link_info *));
40 static bfd_boolean elf_s390_create_dynamic_sections
41 PARAMS((bfd *, struct bfd_link_info *));
42 static void elf_s390_copy_indirect_symbol
43 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
44 struct elf_link_hash_entry *));
45 static bfd_boolean elf_s390_check_relocs
46 PARAMS ((bfd *, struct bfd_link_info *, asection *,
47 const Elf_Internal_Rela *));
48 static asection *elf_s390_gc_mark_hook
49 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
50 struct elf_link_hash_entry *, Elf_Internal_Sym *));
51 static bfd_boolean elf_s390_gc_sweep_hook
52 PARAMS ((bfd *, struct bfd_link_info *, asection *,
53 const Elf_Internal_Rela *));
54 struct elf_s390_link_hash_entry;
55 static void elf_s390_adjust_gotplt
56 PARAMS ((struct elf_s390_link_hash_entry *));
57 static bfd_boolean elf_s390_adjust_dynamic_symbol
58 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
59 static bfd_boolean allocate_dynrelocs
60 PARAMS ((struct elf_link_hash_entry *, PTR));
61 static bfd_boolean readonly_dynrelocs
62 PARAMS ((struct elf_link_hash_entry *, PTR));
63 static bfd_boolean elf_s390_size_dynamic_sections
64 PARAMS ((bfd *, struct bfd_link_info *));
65 static bfd_boolean elf_s390_relocate_section
66 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
67 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
68 static bfd_boolean elf_s390_finish_dynamic_symbol
69 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
70 Elf_Internal_Sym *));
71 static enum elf_reloc_type_class elf_s390_reloc_type_class
72 PARAMS ((const Elf_Internal_Rela *));
73 static bfd_boolean elf_s390_finish_dynamic_sections
74 PARAMS ((bfd *, struct bfd_link_info *));
75 static bfd_boolean elf_s390_mkobject
76 PARAMS ((bfd *));
77 static bfd_boolean elf_s390_object_p
78 PARAMS ((bfd *));
79 static int elf_s390_tls_transition
80 PARAMS ((struct bfd_link_info *, int, int));
81 static bfd_reloc_status_type s390_tls_reloc
82 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
83 static bfd_vma dtpoff_base
84 PARAMS ((struct bfd_link_info *));
85 static bfd_vma tpoff
86 PARAMS ((struct bfd_link_info *, bfd_vma));
87 static void invalid_tls_insn
88 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
89 static bfd_reloc_status_type s390_elf_ldisp_reloc
90 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
91
92 #include "elf/s390.h"
93
94 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
95 from smaller values. Start with zero, widen, *then* decrement. */
96 #define MINUS_ONE (((bfd_vma)0) - 1)
97
98 /* The relocation "howto" table. */
99 static reloc_howto_type elf_howto_table[] =
100 {
101 HOWTO (R_390_NONE, /* type */
102 0, /* rightshift */
103 0, /* size (0 = byte, 1 = short, 2 = long) */
104 0, /* bitsize */
105 FALSE, /* pc_relative */
106 0, /* bitpos */
107 complain_overflow_dont, /* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_390_NONE", /* name */
110 FALSE, /* partial_inplace */
111 0, /* src_mask */
112 0, /* dst_mask */
113 FALSE), /* pcrel_offset */
114
115 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
117 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
118 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
119 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
121 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
123 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
125 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
127 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
129 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
131 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
133 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
135 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
136 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
137 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
139 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
141 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
143 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
145 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
147 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
149 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
151 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
152 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
153 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
155 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
157 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
159 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
161 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
163 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
164 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
165 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
167 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
169 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
171 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
172 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
173 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
175 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
177 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
178 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
179 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
181 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
182 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
183 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
184 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
185 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
186 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
187 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
188 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
189 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
190 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
191 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
192 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
193 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
194 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
196 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
197 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
198 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
199 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
200 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
201 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
202 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
203 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
204 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
205 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
206 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
207 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
208 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
209 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
210 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
211 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
212 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
213 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
214 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
215 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
216 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
217 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
218 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
219 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
220 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
221 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
222 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
223 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
224 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
225 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
226 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
227 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
228 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
229 };
230
231 /* GNU extension to record C++ vtable hierarchy. */
232 static reloc_howto_type elf64_s390_vtinherit_howto =
233 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
234 static reloc_howto_type elf64_s390_vtentry_howto =
235 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
236
237 static reloc_howto_type *
238 elf_s390_reloc_type_lookup (abfd, code)
239 bfd *abfd ATTRIBUTE_UNUSED;
240 bfd_reloc_code_real_type code;
241 {
242 switch (code)
243 {
244 case BFD_RELOC_NONE:
245 return &elf_howto_table[(int) R_390_NONE];
246 case BFD_RELOC_8:
247 return &elf_howto_table[(int) R_390_8];
248 case BFD_RELOC_390_12:
249 return &elf_howto_table[(int) R_390_12];
250 case BFD_RELOC_16:
251 return &elf_howto_table[(int) R_390_16];
252 case BFD_RELOC_32:
253 return &elf_howto_table[(int) R_390_32];
254 case BFD_RELOC_CTOR:
255 return &elf_howto_table[(int) R_390_32];
256 case BFD_RELOC_32_PCREL:
257 return &elf_howto_table[(int) R_390_PC32];
258 case BFD_RELOC_390_GOT12:
259 return &elf_howto_table[(int) R_390_GOT12];
260 case BFD_RELOC_32_GOT_PCREL:
261 return &elf_howto_table[(int) R_390_GOT32];
262 case BFD_RELOC_390_PLT32:
263 return &elf_howto_table[(int) R_390_PLT32];
264 case BFD_RELOC_390_COPY:
265 return &elf_howto_table[(int) R_390_COPY];
266 case BFD_RELOC_390_GLOB_DAT:
267 return &elf_howto_table[(int) R_390_GLOB_DAT];
268 case BFD_RELOC_390_JMP_SLOT:
269 return &elf_howto_table[(int) R_390_JMP_SLOT];
270 case BFD_RELOC_390_RELATIVE:
271 return &elf_howto_table[(int) R_390_RELATIVE];
272 case BFD_RELOC_32_GOTOFF:
273 return &elf_howto_table[(int) R_390_GOTOFF32];
274 case BFD_RELOC_390_GOTPC:
275 return &elf_howto_table[(int) R_390_GOTPC];
276 case BFD_RELOC_390_GOT16:
277 return &elf_howto_table[(int) R_390_GOT16];
278 case BFD_RELOC_16_PCREL:
279 return &elf_howto_table[(int) R_390_PC16];
280 case BFD_RELOC_390_PC16DBL:
281 return &elf_howto_table[(int) R_390_PC16DBL];
282 case BFD_RELOC_390_PLT16DBL:
283 return &elf_howto_table[(int) R_390_PLT16DBL];
284 case BFD_RELOC_390_PC32DBL:
285 return &elf_howto_table[(int) R_390_PC32DBL];
286 case BFD_RELOC_390_PLT32DBL:
287 return &elf_howto_table[(int) R_390_PLT32DBL];
288 case BFD_RELOC_390_GOTPCDBL:
289 return &elf_howto_table[(int) R_390_GOTPCDBL];
290 case BFD_RELOC_64:
291 return &elf_howto_table[(int) R_390_64];
292 case BFD_RELOC_64_PCREL:
293 return &elf_howto_table[(int) R_390_PC64];
294 case BFD_RELOC_390_GOT64:
295 return &elf_howto_table[(int) R_390_GOT64];
296 case BFD_RELOC_390_PLT64:
297 return &elf_howto_table[(int) R_390_PLT64];
298 case BFD_RELOC_390_GOTENT:
299 return &elf_howto_table[(int) R_390_GOTENT];
300 case BFD_RELOC_16_GOTOFF:
301 return &elf_howto_table[(int) R_390_GOTOFF16];
302 case BFD_RELOC_390_GOTOFF64:
303 return &elf_howto_table[(int) R_390_GOTOFF64];
304 case BFD_RELOC_390_GOTPLT12:
305 return &elf_howto_table[(int) R_390_GOTPLT12];
306 case BFD_RELOC_390_GOTPLT16:
307 return &elf_howto_table[(int) R_390_GOTPLT16];
308 case BFD_RELOC_390_GOTPLT32:
309 return &elf_howto_table[(int) R_390_GOTPLT32];
310 case BFD_RELOC_390_GOTPLT64:
311 return &elf_howto_table[(int) R_390_GOTPLT64];
312 case BFD_RELOC_390_GOTPLTENT:
313 return &elf_howto_table[(int) R_390_GOTPLTENT];
314 case BFD_RELOC_390_PLTOFF16:
315 return &elf_howto_table[(int) R_390_PLTOFF16];
316 case BFD_RELOC_390_PLTOFF32:
317 return &elf_howto_table[(int) R_390_PLTOFF32];
318 case BFD_RELOC_390_PLTOFF64:
319 return &elf_howto_table[(int) R_390_PLTOFF64];
320 case BFD_RELOC_390_TLS_LOAD:
321 return &elf_howto_table[(int) R_390_TLS_LOAD];
322 case BFD_RELOC_390_TLS_GDCALL:
323 return &elf_howto_table[(int) R_390_TLS_GDCALL];
324 case BFD_RELOC_390_TLS_LDCALL:
325 return &elf_howto_table[(int) R_390_TLS_LDCALL];
326 case BFD_RELOC_390_TLS_GD64:
327 return &elf_howto_table[(int) R_390_TLS_GD64];
328 case BFD_RELOC_390_TLS_GOTIE12:
329 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
330 case BFD_RELOC_390_TLS_GOTIE64:
331 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
332 case BFD_RELOC_390_TLS_LDM64:
333 return &elf_howto_table[(int) R_390_TLS_LDM64];
334 case BFD_RELOC_390_TLS_IE64:
335 return &elf_howto_table[(int) R_390_TLS_IE64];
336 case BFD_RELOC_390_TLS_IEENT:
337 return &elf_howto_table[(int) R_390_TLS_IEENT];
338 case BFD_RELOC_390_TLS_LE64:
339 return &elf_howto_table[(int) R_390_TLS_LE64];
340 case BFD_RELOC_390_TLS_LDO64:
341 return &elf_howto_table[(int) R_390_TLS_LDO64];
342 case BFD_RELOC_390_TLS_DTPMOD:
343 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
344 case BFD_RELOC_390_TLS_DTPOFF:
345 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
346 case BFD_RELOC_390_TLS_TPOFF:
347 return &elf_howto_table[(int) R_390_TLS_TPOFF];
348 case BFD_RELOC_390_20:
349 return &elf_howto_table[(int) R_390_20];
350 case BFD_RELOC_390_GOT20:
351 return &elf_howto_table[(int) R_390_GOT20];
352 case BFD_RELOC_390_GOTPLT20:
353 return &elf_howto_table[(int) R_390_GOTPLT20];
354 case BFD_RELOC_390_TLS_GOTIE20:
355 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
356 case BFD_RELOC_VTABLE_INHERIT:
357 return &elf64_s390_vtinherit_howto;
358 case BFD_RELOC_VTABLE_ENTRY:
359 return &elf64_s390_vtentry_howto;
360 default:
361 break;
362 }
363 return 0;
364 }
365
366 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
367 and elf64-s390.c has its own copy. */
368
369 static void
370 elf_s390_info_to_howto (abfd, cache_ptr, dst)
371 bfd *abfd ATTRIBUTE_UNUSED;
372 arelent *cache_ptr;
373 Elf_Internal_Rela *dst;
374 {
375 switch (ELF64_R_TYPE(dst->r_info))
376 {
377 case R_390_GNU_VTINHERIT:
378 cache_ptr->howto = &elf64_s390_vtinherit_howto;
379 break;
380
381 case R_390_GNU_VTENTRY:
382 cache_ptr->howto = &elf64_s390_vtentry_howto;
383 break;
384
385 default:
386 BFD_ASSERT (ELF64_R_TYPE(dst->r_info) < (unsigned int) R_390_max);
387 cache_ptr->howto = &elf_howto_table[ELF64_R_TYPE(dst->r_info)];
388 }
389 }
390
391 /* A relocation function which doesn't do anything. */
392 static bfd_reloc_status_type
393 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
394 output_bfd, error_message)
395 bfd *abfd ATTRIBUTE_UNUSED;
396 arelent *reloc_entry;
397 asymbol *symbol ATTRIBUTE_UNUSED;
398 PTR data ATTRIBUTE_UNUSED;
399 asection *input_section;
400 bfd *output_bfd;
401 char **error_message ATTRIBUTE_UNUSED;
402 {
403 if (output_bfd)
404 reloc_entry->address += input_section->output_offset;
405 return bfd_reloc_ok;
406 }
407
408 /* Handle the large displacement relocs. */
409 static bfd_reloc_status_type
410 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
411 output_bfd, error_message)
412 bfd *abfd;
413 arelent *reloc_entry;
414 asymbol *symbol;
415 PTR data;
416 asection *input_section;
417 bfd *output_bfd;
418 char **error_message ATTRIBUTE_UNUSED;
419 {
420 reloc_howto_type *howto = reloc_entry->howto;
421 bfd_vma relocation;
422 bfd_vma insn;
423
424 if (output_bfd != (bfd *) NULL
425 && (symbol->flags & BSF_SECTION_SYM) == 0
426 && (! howto->partial_inplace
427 || reloc_entry->addend == 0))
428 {
429 reloc_entry->address += input_section->output_offset;
430 return bfd_reloc_ok;
431 }
432 if (output_bfd != NULL)
433 return bfd_reloc_continue;
434
435 if (reloc_entry->address > input_section->_cooked_size)
436 return bfd_reloc_outofrange;
437
438 relocation = (symbol->value
439 + symbol->section->output_section->vma
440 + symbol->section->output_offset);
441 relocation += reloc_entry->addend;
442 if (howto->pc_relative)
443 {
444 relocation -= (input_section->output_section->vma
445 + input_section->output_offset);
446 relocation -= reloc_entry->address;
447 }
448
449 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
450 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
451 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
452
453 if ((bfd_signed_vma) relocation < - 0x80000
454 || (bfd_signed_vma) relocation > 0x7ffff)
455 return bfd_reloc_overflow;
456 else
457 return bfd_reloc_ok;
458 }
459
460 static bfd_boolean
461 elf_s390_is_local_label_name (abfd, name)
462 bfd *abfd;
463 const char *name;
464 {
465 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
466 return TRUE;
467
468 return _bfd_elf_is_local_label_name (abfd, name);
469 }
470
471 /* Functions for the 390 ELF linker. */
472
473 /* The name of the dynamic interpreter. This is put in the .interp
474 section. */
475
476 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
477
478 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
479 copying dynamic variables from a shared lib into an app's dynbss
480 section, and instead use a dynamic relocation to point into the
481 shared lib. */
482 #define ELIMINATE_COPY_RELOCS 1
483
484 /* The size in bytes of the first entry in the procedure linkage table. */
485 #define PLT_FIRST_ENTRY_SIZE 32
486 /* The size in bytes of an entry in the procedure linkage table. */
487 #define PLT_ENTRY_SIZE 32
488
489 #define GOT_ENTRY_SIZE 8
490
491 /* The first three entries in a procedure linkage table are reserved,
492 and the initial contents are unimportant (we zero them out).
493 Subsequent entries look like this. See the SVR4 ABI 386
494 supplement to see how this works. */
495
496 /* For the s390, simple addr offset can only be 0 - 4096.
497 To use the full 16777216 TB address space, several instructions
498 are needed to load an address in a register and execute
499 a branch( or just saving the address)
500
501 Furthermore, only r 0 and 1 are free to use!!! */
502
503 /* The first 3 words in the GOT are then reserved.
504 Word 0 is the address of the dynamic table.
505 Word 1 is a pointer to a structure describing the object
506 Word 2 is used to point to the loader entry address.
507
508 The code for PLT entries looks like this:
509
510 The GOT holds the address in the PLT to be executed.
511 The loader then gets:
512 24(15) = Pointer to the structure describing the object.
513 28(15) = Offset in symbol table
514 The loader must then find the module where the function is
515 and insert the address in the GOT.
516
517 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
518 LG 1,0(1) # 6 bytes Load address from GOT in r1
519 BCR 15,1 # 2 bytes Jump to address
520 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
521 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
522 BRCL 15,-x # 6 bytes Jump to start of PLT
523 .long ? # 4 bytes offset into symbol table
524
525 Total = 32 bytes per PLT entry
526 Fixup at offset 2: relative address to GOT entry
527 Fixup at offset 22: relative branch to PLT0
528 Fixup at offset 28: 32 bit offset into symbol table
529
530 A 32 bit offset into the symbol table is enough. It allows for symbol
531 tables up to a size of 2 gigabyte. A single dynamic object (the main
532 program, any shared library) is limited to 4GB in size and I want to see
533 the program that manages to have a symbol table of more than 2 GB with a
534 total size of at max 4 GB. */
535
536 #define PLT_ENTRY_WORD0 (bfd_vma) 0xc0100000
537 #define PLT_ENTRY_WORD1 (bfd_vma) 0x0000e310
538 #define PLT_ENTRY_WORD2 (bfd_vma) 0x10000004
539 #define PLT_ENTRY_WORD3 (bfd_vma) 0x07f10d10
540 #define PLT_ENTRY_WORD4 (bfd_vma) 0xe310100c
541 #define PLT_ENTRY_WORD5 (bfd_vma) 0x0014c0f4
542 #define PLT_ENTRY_WORD6 (bfd_vma) 0x00000000
543 #define PLT_ENTRY_WORD7 (bfd_vma) 0x00000000
544
545 /* The first PLT entry pushes the offset into the symbol table
546 from R1 onto the stack at 8(15) and the loader object info
547 at 12(15), loads the loader address in R1 and jumps to it. */
548
549 /* The first entry in the PLT:
550
551 PLT0:
552 STG 1,56(15) # r1 contains the offset into the symbol table
553 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
554 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
555 LG 1,16(1) # get entry address of loader
556 BCR 15,1 # jump to loader
557
558 Fixup at offset 8: relative address to start of GOT. */
559
560 #define PLT_FIRST_ENTRY_WORD0 (bfd_vma) 0xe310f038
561 #define PLT_FIRST_ENTRY_WORD1 (bfd_vma) 0x0024c010
562 #define PLT_FIRST_ENTRY_WORD2 (bfd_vma) 0x00000000
563 #define PLT_FIRST_ENTRY_WORD3 (bfd_vma) 0xd207f030
564 #define PLT_FIRST_ENTRY_WORD4 (bfd_vma) 0x1008e310
565 #define PLT_FIRST_ENTRY_WORD5 (bfd_vma) 0x10100004
566 #define PLT_FIRST_ENTRY_WORD6 (bfd_vma) 0x07f10700
567 #define PLT_FIRST_ENTRY_WORD7 (bfd_vma) 0x07000700
568
569 /* The s390 linker needs to keep track of the number of relocs that it
570 decides to copy as dynamic relocs in check_relocs for each symbol.
571 This is so that it can later discard them if they are found to be
572 unnecessary. We store the information in a field extending the
573 regular ELF linker hash table. */
574
575 struct elf_s390_dyn_relocs
576 {
577 struct elf_s390_dyn_relocs *next;
578
579 /* The input section of the reloc. */
580 asection *sec;
581
582 /* Total number of relocs copied for the input section. */
583 bfd_size_type count;
584
585 /* Number of pc-relative relocs copied for the input section. */
586 bfd_size_type pc_count;
587 };
588
589 /* s390 ELF linker hash entry. */
590
591 struct elf_s390_link_hash_entry
592 {
593 struct elf_link_hash_entry elf;
594
595 /* Track dynamic relocs copied for this symbol. */
596 struct elf_s390_dyn_relocs *dyn_relocs;
597
598 /* Number of GOTPLT references for a function. */
599 bfd_signed_vma gotplt_refcount;
600
601 #define GOT_UNKNOWN 0
602 #define GOT_NORMAL 1
603 #define GOT_TLS_GD 2
604 #define GOT_TLS_IE 3
605 #define GOT_TLS_IE_NLT 3
606 unsigned char tls_type;
607 };
608
609 #define elf_s390_hash_entry(ent) \
610 ((struct elf_s390_link_hash_entry *)(ent))
611
612 struct elf_s390_obj_tdata
613 {
614 struct elf_obj_tdata root;
615
616 /* tls_type for each local got entry. */
617 char *local_got_tls_type;
618 };
619
620 #define elf_s390_tdata(abfd) \
621 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
622
623 #define elf_s390_local_got_tls_type(abfd) \
624 (elf_s390_tdata (abfd)->local_got_tls_type)
625
626 static bfd_boolean
627 elf_s390_mkobject (abfd)
628 bfd *abfd;
629 {
630 bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
631 abfd->tdata.any = bfd_zalloc (abfd, amt);
632 if (abfd->tdata.any == NULL)
633 return FALSE;
634 return TRUE;
635 }
636
637 static bfd_boolean
638 elf_s390_object_p (abfd)
639 bfd *abfd;
640 {
641 /* Set the right machine number for an s390 elf32 file. */
642 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
643 }
644
645 /* s390 ELF linker hash table. */
646
647 struct elf_s390_link_hash_table
648 {
649 struct elf_link_hash_table elf;
650
651 /* Short-cuts to get to dynamic linker sections. */
652 asection *sgot;
653 asection *sgotplt;
654 asection *srelgot;
655 asection *splt;
656 asection *srelplt;
657 asection *sdynbss;
658 asection *srelbss;
659
660 union {
661 bfd_signed_vma refcount;
662 bfd_vma offset;
663 } tls_ldm_got;
664
665 /* Small local sym to section mapping cache. */
666 struct sym_sec_cache sym_sec;
667 };
668
669 /* Get the s390 ELF linker hash table from a link_info structure. */
670
671 #define elf_s390_hash_table(p) \
672 ((struct elf_s390_link_hash_table *) ((p)->hash))
673
674 /* Create an entry in an s390 ELF linker hash table. */
675
676 static struct bfd_hash_entry *
677 link_hash_newfunc (entry, table, string)
678 struct bfd_hash_entry *entry;
679 struct bfd_hash_table *table;
680 const char *string;
681 {
682 /* Allocate the structure if it has not already been allocated by a
683 subclass. */
684 if (entry == NULL)
685 {
686 entry = bfd_hash_allocate (table,
687 sizeof (struct elf_s390_link_hash_entry));
688 if (entry == NULL)
689 return entry;
690 }
691
692 /* Call the allocation method of the superclass. */
693 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
694 if (entry != NULL)
695 {
696 struct elf_s390_link_hash_entry *eh;
697
698 eh = (struct elf_s390_link_hash_entry *) entry;
699 eh->dyn_relocs = NULL;
700 eh->gotplt_refcount = 0;
701 eh->tls_type = GOT_UNKNOWN;
702 }
703
704 return entry;
705 }
706
707 /* Create an s390 ELF linker hash table. */
708
709 static struct bfd_link_hash_table *
710 elf_s390_link_hash_table_create (abfd)
711 bfd *abfd;
712 {
713 struct elf_s390_link_hash_table *ret;
714 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
715
716 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
717 if (ret == NULL)
718 return NULL;
719
720 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
721 {
722 free (ret);
723 return NULL;
724 }
725
726 ret->sgot = NULL;
727 ret->sgotplt = NULL;
728 ret->srelgot = NULL;
729 ret->splt = NULL;
730 ret->srelplt = NULL;
731 ret->sdynbss = NULL;
732 ret->srelbss = NULL;
733 ret->tls_ldm_got.refcount = 0;
734 ret->sym_sec.abfd = NULL;
735
736 return &ret->elf.root;
737 }
738
739 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
740 shortcuts to them in our hash table. */
741
742 static bfd_boolean
743 create_got_section (dynobj, info)
744 bfd *dynobj;
745 struct bfd_link_info *info;
746 {
747 struct elf_s390_link_hash_table *htab;
748
749 if (! _bfd_elf_create_got_section (dynobj, info))
750 return FALSE;
751
752 htab = elf_s390_hash_table (info);
753 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
754 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
755 if (!htab->sgot || !htab->sgotplt)
756 abort ();
757
758 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
759 if (htab->srelgot == NULL
760 || ! bfd_set_section_flags (dynobj, htab->srelgot,
761 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
762 | SEC_IN_MEMORY | SEC_LINKER_CREATED
763 | SEC_READONLY))
764 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
765 return FALSE;
766 return TRUE;
767 }
768
769 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
770 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
771 hash table. */
772
773 static bfd_boolean
774 elf_s390_create_dynamic_sections (dynobj, info)
775 bfd *dynobj;
776 struct bfd_link_info *info;
777 {
778 struct elf_s390_link_hash_table *htab;
779
780 htab = elf_s390_hash_table (info);
781 if (!htab->sgot && !create_got_section (dynobj, info))
782 return FALSE;
783
784 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
785 return FALSE;
786
787 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
788 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
789 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
790 if (!info->shared)
791 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
792
793 if (!htab->splt || !htab->srelplt || !htab->sdynbss
794 || (!info->shared && !htab->srelbss))
795 abort ();
796
797 return TRUE;
798 }
799
800 /* Copy the extra info we tack onto an elf_link_hash_entry. */
801
802 static void
803 elf_s390_copy_indirect_symbol (bed, dir, ind)
804 const struct elf_backend_data *bed;
805 struct elf_link_hash_entry *dir, *ind;
806 {
807 struct elf_s390_link_hash_entry *edir, *eind;
808
809 edir = (struct elf_s390_link_hash_entry *) dir;
810 eind = (struct elf_s390_link_hash_entry *) ind;
811
812 if (eind->dyn_relocs != NULL)
813 {
814 if (edir->dyn_relocs != NULL)
815 {
816 struct elf_s390_dyn_relocs **pp;
817 struct elf_s390_dyn_relocs *p;
818
819 if (ind->root.type == bfd_link_hash_indirect)
820 abort ();
821
822 /* Add reloc counts against the weak sym to the strong sym
823 list. Merge any entries against the same section. */
824 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
825 {
826 struct elf_s390_dyn_relocs *q;
827
828 for (q = edir->dyn_relocs; q != NULL; q = q->next)
829 if (q->sec == p->sec)
830 {
831 q->pc_count += p->pc_count;
832 q->count += p->count;
833 *pp = p->next;
834 break;
835 }
836 if (q == NULL)
837 pp = &p->next;
838 }
839 *pp = edir->dyn_relocs;
840 }
841
842 edir->dyn_relocs = eind->dyn_relocs;
843 eind->dyn_relocs = NULL;
844 }
845
846 if (ind->root.type == bfd_link_hash_indirect
847 && dir->got.refcount <= 0)
848 {
849 edir->tls_type = eind->tls_type;
850 eind->tls_type = GOT_UNKNOWN;
851 }
852
853 if (ELIMINATE_COPY_RELOCS
854 && ind->root.type != bfd_link_hash_indirect
855 && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
856 /* If called to transfer flags for a weakdef during processing
857 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
858 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
859 dir->elf_link_hash_flags |=
860 (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
861 | ELF_LINK_HASH_REF_REGULAR
862 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
863 | ELF_LINK_HASH_NEEDS_PLT));
864 else
865 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
866 }
867
868 static int
869 elf_s390_tls_transition (info, r_type, is_local)
870 struct bfd_link_info *info;
871 int r_type;
872 int is_local;
873 {
874 if (info->shared)
875 return r_type;
876
877 switch (r_type)
878 {
879 case R_390_TLS_GD64:
880 case R_390_TLS_IE64:
881 if (is_local)
882 return R_390_TLS_LE64;
883 return R_390_TLS_IE64;
884 case R_390_TLS_GOTIE64:
885 if (is_local)
886 return R_390_TLS_LE64;
887 return R_390_TLS_GOTIE64;
888 case R_390_TLS_LDM64:
889 return R_390_TLS_LE64;
890 }
891
892 return r_type;
893 }
894
895 /* Look through the relocs for a section during the first phase, and
896 allocate space in the global offset table or procedure linkage
897 table. */
898
899 static bfd_boolean
900 elf_s390_check_relocs (abfd, info, sec, relocs)
901 bfd *abfd;
902 struct bfd_link_info *info;
903 asection *sec;
904 const Elf_Internal_Rela *relocs;
905 {
906 struct elf_s390_link_hash_table *htab;
907 Elf_Internal_Shdr *symtab_hdr;
908 struct elf_link_hash_entry **sym_hashes;
909 const Elf_Internal_Rela *rel;
910 const Elf_Internal_Rela *rel_end;
911 asection *sreloc;
912 bfd_signed_vma *local_got_refcounts;
913 int tls_type, old_tls_type;
914
915 if (info->relocatable)
916 return TRUE;
917
918 htab = elf_s390_hash_table (info);
919 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
920 sym_hashes = elf_sym_hashes (abfd);
921 local_got_refcounts = elf_local_got_refcounts (abfd);
922
923 sreloc = NULL;
924
925 rel_end = relocs + sec->reloc_count;
926 for (rel = relocs; rel < rel_end; rel++)
927 {
928 unsigned int r_type;
929 unsigned long r_symndx;
930 struct elf_link_hash_entry *h;
931
932 r_symndx = ELF64_R_SYM (rel->r_info);
933
934 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
935 {
936 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
937 bfd_archive_filename (abfd),
938 r_symndx);
939 return FALSE;
940 }
941
942 if (r_symndx < symtab_hdr->sh_info)
943 h = NULL;
944 else
945 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
946
947 /* Create got section and local_got_refcounts array if they
948 are needed. */
949 r_type = elf_s390_tls_transition (info,
950 ELF64_R_TYPE (rel->r_info),
951 h == NULL);
952 switch (r_type)
953 {
954 case R_390_GOT12:
955 case R_390_GOT16:
956 case R_390_GOT20:
957 case R_390_GOT32:
958 case R_390_GOT64:
959 case R_390_GOTENT:
960 case R_390_GOTPLT12:
961 case R_390_GOTPLT16:
962 case R_390_GOTPLT20:
963 case R_390_GOTPLT32:
964 case R_390_GOTPLT64:
965 case R_390_GOTPLTENT:
966 case R_390_TLS_GD64:
967 case R_390_TLS_GOTIE12:
968 case R_390_TLS_GOTIE20:
969 case R_390_TLS_GOTIE64:
970 case R_390_TLS_IEENT:
971 case R_390_TLS_IE64:
972 case R_390_TLS_LDM64:
973 if (h == NULL
974 && local_got_refcounts == NULL)
975 {
976 bfd_size_type size;
977
978 size = symtab_hdr->sh_info;
979 size *= (sizeof (bfd_signed_vma) + sizeof(char));
980 local_got_refcounts = ((bfd_signed_vma *)
981 bfd_zalloc (abfd, size));
982 if (local_got_refcounts == NULL)
983 return FALSE;
984 elf_local_got_refcounts (abfd) = local_got_refcounts;
985 elf_s390_local_got_tls_type (abfd)
986 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
987 }
988 /* Fall through. */
989 case R_390_GOTOFF16:
990 case R_390_GOTOFF32:
991 case R_390_GOTOFF64:
992 case R_390_GOTPC:
993 case R_390_GOTPCDBL:
994 if (htab->sgot == NULL)
995 {
996 if (htab->elf.dynobj == NULL)
997 htab->elf.dynobj = abfd;
998 if (!create_got_section (htab->elf.dynobj, info))
999 return FALSE;
1000 }
1001 }
1002
1003 switch (r_type)
1004 {
1005 case R_390_GOTOFF16:
1006 case R_390_GOTOFF32:
1007 case R_390_GOTOFF64:
1008 case R_390_GOTPC:
1009 case R_390_GOTPCDBL:
1010 /* Got is created, nothing to be done. */
1011 break;
1012
1013 case R_390_PLT16DBL:
1014 case R_390_PLT32:
1015 case R_390_PLT32DBL:
1016 case R_390_PLT64:
1017 case R_390_PLTOFF16:
1018 case R_390_PLTOFF32:
1019 case R_390_PLTOFF64:
1020 /* This symbol requires a procedure linkage table entry. We
1021 actually build the entry in adjust_dynamic_symbol,
1022 because this might be a case of linking PIC code which is
1023 never referenced by a dynamic object, in which case we
1024 don't need to generate a procedure linkage table entry
1025 after all. */
1026
1027 /* If this is a local symbol, we resolve it directly without
1028 creating a procedure linkage table entry. */
1029 if (h != NULL)
1030 {
1031 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1032 h->plt.refcount += 1;
1033 }
1034 break;
1035
1036 case R_390_GOTPLT12:
1037 case R_390_GOTPLT16:
1038 case R_390_GOTPLT20:
1039 case R_390_GOTPLT32:
1040 case R_390_GOTPLT64:
1041 case R_390_GOTPLTENT:
1042 /* This symbol requires either a procedure linkage table entry
1043 or an entry in the local got. We actually build the entry
1044 in adjust_dynamic_symbol because whether this is really a
1045 global reference can change and with it the fact if we have
1046 to create a plt entry or a local got entry. To be able to
1047 make a once global symbol a local one we have to keep track
1048 of the number of gotplt references that exist for this
1049 symbol. */
1050 if (h != NULL)
1051 {
1052 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1053 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1054 h->plt.refcount += 1;
1055 }
1056 else
1057 local_got_refcounts[r_symndx] += 1;
1058 break;
1059
1060 case R_390_TLS_LDM64:
1061 htab->tls_ldm_got.refcount += 1;
1062 break;
1063
1064 case R_390_TLS_IE64:
1065 case R_390_TLS_GOTIE12:
1066 case R_390_TLS_GOTIE20:
1067 case R_390_TLS_GOTIE64:
1068 case R_390_TLS_IEENT:
1069 if (info->shared)
1070 info->flags |= DF_STATIC_TLS;
1071 /* Fall through */
1072
1073 case R_390_GOT12:
1074 case R_390_GOT16:
1075 case R_390_GOT20:
1076 case R_390_GOT32:
1077 case R_390_GOT64:
1078 case R_390_GOTENT:
1079 case R_390_TLS_GD64:
1080 /* This symbol requires a global offset table entry. */
1081 switch (r_type)
1082 {
1083 default:
1084 case R_390_GOT12:
1085 case R_390_GOT16:
1086 case R_390_GOT20:
1087 case R_390_GOT32:
1088 case R_390_GOTENT:
1089 tls_type = GOT_NORMAL;
1090 break;
1091 case R_390_TLS_GD64:
1092 tls_type = GOT_TLS_GD;
1093 break;
1094 case R_390_TLS_IE64:
1095 case R_390_TLS_GOTIE64:
1096 tls_type = GOT_TLS_IE;
1097 break;
1098 case R_390_TLS_GOTIE12:
1099 case R_390_TLS_GOTIE20:
1100 case R_390_TLS_IEENT:
1101 tls_type = GOT_TLS_IE_NLT;
1102 break;
1103 }
1104
1105 if (h != NULL)
1106 {
1107 h->got.refcount += 1;
1108 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1109 }
1110 else
1111 {
1112 local_got_refcounts[r_symndx] += 1;
1113 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1114 }
1115 /* If a TLS symbol is accessed using IE at least once,
1116 there is no point to use dynamic model for it. */
1117 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1118 {
1119 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1120 {
1121 (*_bfd_error_handler)
1122 (_("%s: `%s' accessed both as normal and thread local symbol"),
1123 bfd_archive_filename (abfd), h->root.root.string);
1124 return FALSE;
1125 }
1126 if (old_tls_type > tls_type)
1127 tls_type = old_tls_type;
1128 }
1129
1130 if (old_tls_type != tls_type)
1131 {
1132 if (h != NULL)
1133 elf_s390_hash_entry (h)->tls_type = tls_type;
1134 else
1135 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1136 }
1137
1138 if (r_type != R_390_TLS_IE64)
1139 break;
1140 /* Fall through */
1141
1142 case R_390_TLS_LE64:
1143 if (!info->shared)
1144 break;
1145 info->flags |= DF_STATIC_TLS;
1146 /* Fall through */
1147
1148 case R_390_8:
1149 case R_390_16:
1150 case R_390_32:
1151 case R_390_64:
1152 case R_390_PC16:
1153 case R_390_PC16DBL:
1154 case R_390_PC32:
1155 case R_390_PC32DBL:
1156 case R_390_PC64:
1157 if (h != NULL && !info->shared)
1158 {
1159 /* If this reloc is in a read-only section, we might
1160 need a copy reloc. We can't check reliably at this
1161 stage whether the section is read-only, as input
1162 sections have not yet been mapped to output sections.
1163 Tentatively set the flag for now, and correct in
1164 adjust_dynamic_symbol. */
1165 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1166
1167 /* We may need a .plt entry if the function this reloc
1168 refers to is in a shared lib. */
1169 h->plt.refcount += 1;
1170 }
1171
1172 /* If we are creating a shared library, and this is a reloc
1173 against a global symbol, or a non PC relative reloc
1174 against a local symbol, then we need to copy the reloc
1175 into the shared library. However, if we are linking with
1176 -Bsymbolic, we do not need to copy a reloc against a
1177 global symbol which is defined in an object we are
1178 including in the link (i.e., DEF_REGULAR is set). At
1179 this point we have not seen all the input files, so it is
1180 possible that DEF_REGULAR is not set now but will be set
1181 later (it is never cleared). In case of a weak definition,
1182 DEF_REGULAR may be cleared later by a strong definition in
1183 a shared library. We account for that possibility below by
1184 storing information in the relocs_copied field of the hash
1185 table entry. A similar situation occurs when creating
1186 shared libraries and symbol visibility changes render the
1187 symbol local.
1188
1189 If on the other hand, we are creating an executable, we
1190 may need to keep relocations for symbols satisfied by a
1191 dynamic library if we manage to avoid copy relocs for the
1192 symbol. */
1193 if ((info->shared
1194 && (sec->flags & SEC_ALLOC) != 0
1195 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1196 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1197 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1198 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1199 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1200 || (h != NULL
1201 && (! info->symbolic
1202 || h->root.type == bfd_link_hash_defweak
1203 || (h->elf_link_hash_flags
1204 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1205 || (ELIMINATE_COPY_RELOCS
1206 && !info->shared
1207 && (sec->flags & SEC_ALLOC) != 0
1208 && h != NULL
1209 && (h->root.type == bfd_link_hash_defweak
1210 || (h->elf_link_hash_flags
1211 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1212 {
1213 struct elf_s390_dyn_relocs *p;
1214 struct elf_s390_dyn_relocs **head;
1215
1216 /* We must copy these reloc types into the output file.
1217 Create a reloc section in dynobj and make room for
1218 this reloc. */
1219 if (sreloc == NULL)
1220 {
1221 const char *name;
1222 bfd *dynobj;
1223
1224 name = (bfd_elf_string_from_elf_section
1225 (abfd,
1226 elf_elfheader (abfd)->e_shstrndx,
1227 elf_section_data (sec)->rel_hdr.sh_name));
1228 if (name == NULL)
1229 return FALSE;
1230
1231 if (strncmp (name, ".rela", 5) != 0
1232 || strcmp (bfd_get_section_name (abfd, sec),
1233 name + 5) != 0)
1234 {
1235 (*_bfd_error_handler)
1236 (_("%s: bad relocation section name `%s\'"),
1237 bfd_archive_filename (abfd), name);
1238 }
1239
1240 if (htab->elf.dynobj == NULL)
1241 htab->elf.dynobj = abfd;
1242
1243 dynobj = htab->elf.dynobj;
1244 sreloc = bfd_get_section_by_name (dynobj, name);
1245 if (sreloc == NULL)
1246 {
1247 flagword flags;
1248
1249 sreloc = bfd_make_section (dynobj, name);
1250 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1251 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1252 if ((sec->flags & SEC_ALLOC) != 0)
1253 flags |= SEC_ALLOC | SEC_LOAD;
1254 if (sreloc == NULL
1255 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1256 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
1257 return FALSE;
1258 }
1259 elf_section_data (sec)->sreloc = sreloc;
1260 }
1261
1262 /* If this is a global symbol, we count the number of
1263 relocations we need for this symbol. */
1264 if (h != NULL)
1265 {
1266 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1267 }
1268 else
1269 {
1270 /* Track dynamic relocs needed for local syms too.
1271 We really need local syms available to do this
1272 easily. Oh well. */
1273
1274 asection *s;
1275 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1276 sec, r_symndx);
1277 if (s == NULL)
1278 return FALSE;
1279
1280 head = ((struct elf_s390_dyn_relocs **)
1281 &elf_section_data (s)->local_dynrel);
1282 }
1283
1284 p = *head;
1285 if (p == NULL || p->sec != sec)
1286 {
1287 bfd_size_type amt = sizeof *p;
1288 p = ((struct elf_s390_dyn_relocs *)
1289 bfd_alloc (htab->elf.dynobj, amt));
1290 if (p == NULL)
1291 return FALSE;
1292 p->next = *head;
1293 *head = p;
1294 p->sec = sec;
1295 p->count = 0;
1296 p->pc_count = 0;
1297 }
1298
1299 p->count += 1;
1300 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1301 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1302 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1303 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1304 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1305 p->pc_count += 1;
1306 }
1307 break;
1308
1309 /* This relocation describes the C++ object vtable hierarchy.
1310 Reconstruct it for later use during GC. */
1311 case R_390_GNU_VTINHERIT:
1312 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1313 return FALSE;
1314 break;
1315
1316 /* This relocation describes which C++ vtable entries are actually
1317 used. Record for later use during GC. */
1318 case R_390_GNU_VTENTRY:
1319 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1320 return FALSE;
1321 break;
1322
1323 default:
1324 break;
1325 }
1326 }
1327
1328 return TRUE;
1329 }
1330
1331 /* Return the section that should be marked against GC for a given
1332 relocation. */
1333
1334 static asection *
1335 elf_s390_gc_mark_hook (sec, info, rel, h, sym)
1336 asection *sec;
1337 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1338 Elf_Internal_Rela *rel;
1339 struct elf_link_hash_entry *h;
1340 Elf_Internal_Sym *sym;
1341 {
1342 if (h != NULL)
1343 {
1344 switch (ELF64_R_TYPE (rel->r_info))
1345 {
1346 case R_390_GNU_VTINHERIT:
1347 case R_390_GNU_VTENTRY:
1348 break;
1349
1350 default:
1351 switch (h->root.type)
1352 {
1353 case bfd_link_hash_defined:
1354 case bfd_link_hash_defweak:
1355 return h->root.u.def.section;
1356
1357 case bfd_link_hash_common:
1358 return h->root.u.c.p->section;
1359
1360 default:
1361 break;
1362 }
1363 }
1364 }
1365 else
1366 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1367
1368 return NULL;
1369 }
1370
1371 /* Update the got entry reference counts for the section being removed. */
1372
1373 static bfd_boolean
1374 elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
1375 bfd *abfd;
1376 struct bfd_link_info *info;
1377 asection *sec;
1378 const Elf_Internal_Rela *relocs;
1379 {
1380 Elf_Internal_Shdr *symtab_hdr;
1381 struct elf_link_hash_entry **sym_hashes;
1382 bfd_signed_vma *local_got_refcounts;
1383 const Elf_Internal_Rela *rel, *relend;
1384
1385 elf_section_data (sec)->local_dynrel = NULL;
1386
1387 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1388 sym_hashes = elf_sym_hashes (abfd);
1389 local_got_refcounts = elf_local_got_refcounts (abfd);
1390
1391 relend = relocs + sec->reloc_count;
1392 for (rel = relocs; rel < relend; rel++)
1393 {
1394 unsigned long r_symndx;
1395 unsigned int r_type;
1396 struct elf_link_hash_entry *h = NULL;
1397
1398 r_symndx = ELF64_R_SYM (rel->r_info);
1399 if (r_symndx >= symtab_hdr->sh_info)
1400 {
1401 struct elf_s390_link_hash_entry *eh;
1402 struct elf_s390_dyn_relocs **pp;
1403 struct elf_s390_dyn_relocs *p;
1404
1405 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1406 eh = (struct elf_s390_link_hash_entry *) h;
1407
1408 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1409 if (p->sec == sec)
1410 {
1411 /* Everything must go for SEC. */
1412 *pp = p->next;
1413 break;
1414 }
1415 }
1416
1417 r_type = ELF64_R_TYPE (rel->r_info);
1418 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1419 switch (r_type)
1420 {
1421 case R_390_TLS_LDM64:
1422 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1423 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1424 break;
1425
1426 case R_390_TLS_GD64:
1427 case R_390_TLS_IE64:
1428 case R_390_TLS_GOTIE12:
1429 case R_390_TLS_GOTIE20:
1430 case R_390_TLS_GOTIE64:
1431 case R_390_TLS_IEENT:
1432 case R_390_GOT12:
1433 case R_390_GOT16:
1434 case R_390_GOT20:
1435 case R_390_GOT32:
1436 case R_390_GOT64:
1437 case R_390_GOTOFF16:
1438 case R_390_GOTOFF32:
1439 case R_390_GOTOFF64:
1440 case R_390_GOTPC:
1441 case R_390_GOTPCDBL:
1442 case R_390_GOTENT:
1443 if (h != NULL)
1444 {
1445 if (h->got.refcount > 0)
1446 h->got.refcount -= 1;
1447 }
1448 else if (local_got_refcounts != NULL)
1449 {
1450 if (local_got_refcounts[r_symndx] > 0)
1451 local_got_refcounts[r_symndx] -= 1;
1452 }
1453 break;
1454
1455 case R_390_8:
1456 case R_390_12:
1457 case R_390_16:
1458 case R_390_20:
1459 case R_390_32:
1460 case R_390_64:
1461 case R_390_PC16:
1462 case R_390_PC16DBL:
1463 case R_390_PC32:
1464 case R_390_PC32DBL:
1465 case R_390_PC64:
1466 if (info->shared)
1467 break;
1468 /* Fall through */
1469
1470 case R_390_PLT16DBL:
1471 case R_390_PLT32:
1472 case R_390_PLT32DBL:
1473 case R_390_PLT64:
1474 case R_390_PLTOFF16:
1475 case R_390_PLTOFF32:
1476 case R_390_PLTOFF64:
1477 if (h != NULL)
1478 {
1479 if (h->plt.refcount > 0)
1480 h->plt.refcount -= 1;
1481 }
1482 break;
1483
1484 case R_390_GOTPLT12:
1485 case R_390_GOTPLT16:
1486 case R_390_GOTPLT20:
1487 case R_390_GOTPLT32:
1488 case R_390_GOTPLT64:
1489 case R_390_GOTPLTENT:
1490 if (h != NULL)
1491 {
1492 if (h->plt.refcount > 0)
1493 {
1494 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1495 h->plt.refcount -= 1;
1496 }
1497 }
1498 else if (local_got_refcounts != NULL)
1499 {
1500 if (local_got_refcounts[r_symndx] > 0)
1501 local_got_refcounts[r_symndx] -= 1;
1502 }
1503 break;
1504
1505 default:
1506 break;
1507 }
1508 }
1509
1510 return TRUE;
1511 }
1512
1513 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1514 entry but we found we will not create any. Called when we find we will
1515 not have any PLT for this symbol, by for example
1516 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1517 or elf_s390_size_dynamic_sections if no dynamic sections will be
1518 created (we're only linking static objects). */
1519
1520 static void
1521 elf_s390_adjust_gotplt (h)
1522 struct elf_s390_link_hash_entry *h;
1523 {
1524 if (h->elf.root.type == bfd_link_hash_warning)
1525 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1526
1527 if (h->gotplt_refcount <= 0)
1528 return;
1529
1530 /* We simply add the number of gotplt references to the number
1531 * of got references for this symbol. */
1532 h->elf.got.refcount += h->gotplt_refcount;
1533 h->gotplt_refcount = -1;
1534 }
1535
1536 /* Adjust a symbol defined by a dynamic object and referenced by a
1537 regular object. The current definition is in some section of the
1538 dynamic object, but we're not including those sections. We have to
1539 change the definition to something the rest of the link can
1540 understand. */
1541
1542 static bfd_boolean
1543 elf_s390_adjust_dynamic_symbol (info, h)
1544 struct bfd_link_info *info;
1545 struct elf_link_hash_entry *h;
1546 {
1547 struct elf_s390_link_hash_table *htab;
1548 asection *s;
1549 unsigned int power_of_two;
1550
1551 /* If this is a function, put it in the procedure linkage table. We
1552 will fill in the contents of the procedure linkage table later
1553 (although we could actually do it here). */
1554 if (h->type == STT_FUNC
1555 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1556 {
1557 if (h->plt.refcount <= 0
1558 || (! info->shared
1559 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1560 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1561 && h->root.type != bfd_link_hash_undefweak
1562 && h->root.type != bfd_link_hash_undefined))
1563 {
1564 /* This case can occur if we saw a PLT32 reloc in an input
1565 file, but the symbol was never referred to by a dynamic
1566 object, or if all references were garbage collected. In
1567 such a case, we don't actually need to build a procedure
1568 linkage table, and we can just do a PC32 reloc instead. */
1569 h->plt.offset = (bfd_vma) -1;
1570 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1571 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1572 }
1573
1574 return TRUE;
1575 }
1576 else
1577 /* It's possible that we incorrectly decided a .plt reloc was
1578 needed for an R_390_PC32 reloc to a non-function sym in
1579 check_relocs. We can't decide accurately between function and
1580 non-function syms in check-relocs; Objects loaded later in
1581 the link may change h->type. So fix it now. */
1582 h->plt.offset = (bfd_vma) -1;
1583
1584 /* If this is a weak symbol, and there is a real definition, the
1585 processor independent code will have arranged for us to see the
1586 real definition first, and we can just use the same value. */
1587 if (h->weakdef != NULL)
1588 {
1589 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1590 || h->weakdef->root.type == bfd_link_hash_defweak);
1591 h->root.u.def.section = h->weakdef->root.u.def.section;
1592 h->root.u.def.value = h->weakdef->root.u.def.value;
1593 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1594 h->elf_link_hash_flags
1595 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
1596 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
1597 return TRUE;
1598 }
1599
1600 /* This is a reference to a symbol defined by a dynamic object which
1601 is not a function. */
1602
1603 /* If we are creating a shared library, we must presume that the
1604 only references to the symbol are via the global offset table.
1605 For such cases we need not do anything here; the relocations will
1606 be handled correctly by relocate_section. */
1607 if (info->shared)
1608 return TRUE;
1609
1610 /* If there are no references to this symbol that do not use the
1611 GOT, we don't need to generate a copy reloc. */
1612 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1613 return TRUE;
1614
1615 /* If -z nocopyreloc was given, we won't generate them either. */
1616 if (info->nocopyreloc)
1617 {
1618 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1619 return TRUE;
1620 }
1621
1622 if (ELIMINATE_COPY_RELOCS)
1623 {
1624 struct elf_s390_link_hash_entry * eh;
1625 struct elf_s390_dyn_relocs *p;
1626
1627 eh = (struct elf_s390_link_hash_entry *) h;
1628 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1629 {
1630 s = p->sec->output_section;
1631 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1632 break;
1633 }
1634
1635 /* If we didn't find any dynamic relocs in read-only sections, then
1636 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1637 if (p == NULL)
1638 {
1639 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1640 return TRUE;
1641 }
1642 }
1643
1644 /* We must allocate the symbol in our .dynbss section, which will
1645 become part of the .bss section of the executable. There will be
1646 an entry for this symbol in the .dynsym section. The dynamic
1647 object will contain position independent code, so all references
1648 from the dynamic object to this symbol will go through the global
1649 offset table. The dynamic linker will use the .dynsym entry to
1650 determine the address it must put in the global offset table, so
1651 both the dynamic object and the regular object will refer to the
1652 same memory location for the variable. */
1653
1654 htab = elf_s390_hash_table (info);
1655
1656 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1657 copy the initial value out of the dynamic object and into the
1658 runtime process image. */
1659 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1660 {
1661 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
1662 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1663 }
1664
1665 /* We need to figure out the alignment required for this symbol. I
1666 have no idea how ELF linkers handle this. */
1667 power_of_two = bfd_log2 (h->size);
1668 if (power_of_two > 3)
1669 power_of_two = 3;
1670
1671 /* Apply the required alignment. */
1672 s = htab->sdynbss;
1673 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
1674 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1675 {
1676 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1677 return FALSE;
1678 }
1679
1680 /* Define the symbol as being at this point in the section. */
1681 h->root.u.def.section = s;
1682 h->root.u.def.value = s->_raw_size;
1683
1684 /* Increment the section size to make room for the symbol. */
1685 s->_raw_size += h->size;
1686
1687 return TRUE;
1688 }
1689
1690 /* This is the condition under which elf_s390_finish_dynamic_symbol
1691 will be called from elflink.h. If elflink.h doesn't call our
1692 finish_dynamic_symbol routine, we'll need to do something about
1693 initializing any .plt and .got entries in elf_s390_relocate_section. */
1694 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
1695 ((DYN) \
1696 && ((SHARED) \
1697 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1698 && ((H)->dynindx != -1 \
1699 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1700
1701 /* Allocate space in .plt, .got and associated reloc sections for
1702 dynamic relocs. */
1703
1704 static bfd_boolean
1705 allocate_dynrelocs (h, inf)
1706 struct elf_link_hash_entry *h;
1707 PTR inf;
1708 {
1709 struct bfd_link_info *info;
1710 struct elf_s390_link_hash_table *htab;
1711 struct elf_s390_link_hash_entry *eh;
1712 struct elf_s390_dyn_relocs *p;
1713
1714 if (h->root.type == bfd_link_hash_indirect)
1715 return TRUE;
1716
1717 if (h->root.type == bfd_link_hash_warning)
1718 /* When warning symbols are created, they **replace** the "real"
1719 entry in the hash table, thus we never get to see the real
1720 symbol in a hash traversal. So look at it now. */
1721 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1722
1723 info = (struct bfd_link_info *) inf;
1724 htab = elf_s390_hash_table (info);
1725
1726 if (htab->elf.dynamic_sections_created
1727 && h->plt.refcount > 0
1728 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1729 || h->root.type != bfd_link_hash_undefweak))
1730 {
1731 /* Make sure this symbol is output as a dynamic symbol.
1732 Undefined weak syms won't yet be marked as dynamic. */
1733 if (h->dynindx == -1
1734 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1735 {
1736 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1737 return FALSE;
1738 }
1739
1740 if (info->shared
1741 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1742 {
1743 asection *s = htab->splt;
1744
1745 /* If this is the first .plt entry, make room for the special
1746 first entry. */
1747 if (s->_raw_size == 0)
1748 s->_raw_size += PLT_FIRST_ENTRY_SIZE;
1749
1750 h->plt.offset = s->_raw_size;
1751
1752 /* If this symbol is not defined in a regular file, and we are
1753 not generating a shared library, then set the symbol to this
1754 location in the .plt. This is required to make function
1755 pointers compare as equal between the normal executable and
1756 the shared library. */
1757 if (! info->shared
1758 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1759 {
1760 h->root.u.def.section = s;
1761 h->root.u.def.value = h->plt.offset;
1762 }
1763
1764 /* Make room for this entry. */
1765 s->_raw_size += PLT_ENTRY_SIZE;
1766
1767 /* We also need to make an entry in the .got.plt section, which
1768 will be placed in the .got section by the linker script. */
1769 htab->sgotplt->_raw_size += GOT_ENTRY_SIZE;
1770
1771 /* We also need to make an entry in the .rela.plt section. */
1772 htab->srelplt->_raw_size += sizeof (Elf64_External_Rela);
1773 }
1774 else
1775 {
1776 h->plt.offset = (bfd_vma) -1;
1777 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1778 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1779 }
1780 }
1781 else
1782 {
1783 h->plt.offset = (bfd_vma) -1;
1784 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1785 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1786 }
1787
1788 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1789 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1790 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1791 we can save the dynamic TLS relocation. */
1792 if (h->got.refcount > 0
1793 && !info->shared
1794 && h->dynindx == -1
1795 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1796 {
1797 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1798 /* For the GOTIE access without a literal pool entry the offset has
1799 to be stored somewhere. The immediate value in the instruction
1800 is not bit enough so the value is stored in the got. */
1801 {
1802 h->got.offset = htab->sgot->_raw_size;
1803 htab->sgot->_raw_size += GOT_ENTRY_SIZE;
1804 }
1805 else
1806 h->got.offset = (bfd_vma) -1;
1807 }
1808 else if (h->got.refcount > 0)
1809 {
1810 asection *s;
1811 bfd_boolean dyn;
1812 int tls_type = elf_s390_hash_entry(h)->tls_type;
1813
1814 /* Make sure this symbol is output as a dynamic symbol.
1815 Undefined weak syms won't yet be marked as dynamic. */
1816 if (h->dynindx == -1
1817 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1818 {
1819 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1820 return FALSE;
1821 }
1822
1823 s = htab->sgot;
1824 h->got.offset = s->_raw_size;
1825 s->_raw_size += GOT_ENTRY_SIZE;
1826 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1827 if (tls_type == GOT_TLS_GD)
1828 s->_raw_size += GOT_ENTRY_SIZE;
1829 dyn = htab->elf.dynamic_sections_created;
1830 /* R_390_TLS_IE64 needs one dynamic relocation,
1831 R_390_TLS_GD64 needs one if local symbol and two if global. */
1832 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1833 || tls_type >= GOT_TLS_IE)
1834 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
1835 else if (tls_type == GOT_TLS_GD)
1836 htab->srelgot->_raw_size += 2 * sizeof (Elf64_External_Rela);
1837 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1838 || h->root.type != bfd_link_hash_undefweak)
1839 && (info->shared
1840 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1841 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
1842 }
1843 else
1844 h->got.offset = (bfd_vma) -1;
1845
1846 eh = (struct elf_s390_link_hash_entry *) h;
1847 if (eh->dyn_relocs == NULL)
1848 return TRUE;
1849
1850 /* In the shared -Bsymbolic case, discard space allocated for
1851 dynamic pc-relative relocs against symbols which turn out to be
1852 defined in regular objects. For the normal shared case, discard
1853 space for pc-relative relocs that have become local due to symbol
1854 visibility changes. */
1855
1856 if (info->shared)
1857 {
1858 if (SYMBOL_REFERENCES_LOCAL (info, h))
1859 {
1860 struct elf_s390_dyn_relocs **pp;
1861
1862 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1863 {
1864 p->count -= p->pc_count;
1865 p->pc_count = 0;
1866 if (p->count == 0)
1867 *pp = p->next;
1868 else
1869 pp = &p->next;
1870 }
1871 }
1872
1873 /* Also discard relocs on undefined weak syms with non-default
1874 visibility. */
1875 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1876 && h->root.type == bfd_link_hash_undefweak)
1877 eh->dyn_relocs = NULL;
1878 }
1879 else if (ELIMINATE_COPY_RELOCS)
1880 {
1881 /* For the non-shared case, discard space for relocs against
1882 symbols which turn out to need copy relocs or are not
1883 dynamic. */
1884
1885 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1886 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1887 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1888 || (htab->elf.dynamic_sections_created
1889 && (h->root.type == bfd_link_hash_undefweak
1890 || h->root.type == bfd_link_hash_undefined))))
1891 {
1892 /* Make sure this symbol is output as a dynamic symbol.
1893 Undefined weak syms won't yet be marked as dynamic. */
1894 if (h->dynindx == -1
1895 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1896 {
1897 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1898 return FALSE;
1899 }
1900
1901 /* If that succeeded, we know we'll be keeping all the
1902 relocs. */
1903 if (h->dynindx != -1)
1904 goto keep;
1905 }
1906
1907 eh->dyn_relocs = NULL;
1908
1909 keep: ;
1910 }
1911
1912 /* Finally, allocate space. */
1913 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1914 {
1915 asection *sreloc = elf_section_data (p->sec)->sreloc;
1916 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
1917 }
1918
1919 return TRUE;
1920 }
1921
1922 /* Find any dynamic relocs that apply to read-only sections. */
1923
1924 static bfd_boolean
1925 readonly_dynrelocs (h, inf)
1926 struct elf_link_hash_entry *h;
1927 PTR inf;
1928 {
1929 struct elf_s390_link_hash_entry *eh;
1930 struct elf_s390_dyn_relocs *p;
1931
1932 if (h->root.type == bfd_link_hash_warning)
1933 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1934
1935 eh = (struct elf_s390_link_hash_entry *) h;
1936 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1937 {
1938 asection *s = p->sec->output_section;
1939
1940 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1941 {
1942 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1943
1944 info->flags |= DF_TEXTREL;
1945
1946 /* Not an error, just cut short the traversal. */
1947 return FALSE;
1948 }
1949 }
1950 return TRUE;
1951 }
1952
1953 /* Set the sizes of the dynamic sections. */
1954
1955 static bfd_boolean
1956 elf_s390_size_dynamic_sections (output_bfd, info)
1957 bfd *output_bfd ATTRIBUTE_UNUSED;
1958 struct bfd_link_info *info;
1959 {
1960 struct elf_s390_link_hash_table *htab;
1961 bfd *dynobj;
1962 asection *s;
1963 bfd_boolean relocs;
1964 bfd *ibfd;
1965
1966 htab = elf_s390_hash_table (info);
1967 dynobj = htab->elf.dynobj;
1968 if (dynobj == NULL)
1969 abort ();
1970
1971 if (htab->elf.dynamic_sections_created)
1972 {
1973 /* Set the contents of the .interp section to the interpreter. */
1974 if (info->executable)
1975 {
1976 s = bfd_get_section_by_name (dynobj, ".interp");
1977 if (s == NULL)
1978 abort ();
1979 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1980 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1981 }
1982 }
1983
1984 /* Set up .got offsets for local syms, and space for local dynamic
1985 relocs. */
1986 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1987 {
1988 bfd_signed_vma *local_got;
1989 bfd_signed_vma *end_local_got;
1990 char *local_tls_type;
1991 bfd_size_type locsymcount;
1992 Elf_Internal_Shdr *symtab_hdr;
1993 asection *srela;
1994
1995 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1996 continue;
1997
1998 for (s = ibfd->sections; s != NULL; s = s->next)
1999 {
2000 struct elf_s390_dyn_relocs *p;
2001
2002 for (p = *((struct elf_s390_dyn_relocs **)
2003 &elf_section_data (s)->local_dynrel);
2004 p != NULL;
2005 p = p->next)
2006 {
2007 if (!bfd_is_abs_section (p->sec)
2008 && bfd_is_abs_section (p->sec->output_section))
2009 {
2010 /* Input section has been discarded, either because
2011 it is a copy of a linkonce section or due to
2012 linker script /DISCARD/, so we'll be discarding
2013 the relocs too. */
2014 }
2015 else if (p->count != 0)
2016 {
2017 srela = elf_section_data (p->sec)->sreloc;
2018 srela->_raw_size += p->count * sizeof (Elf64_External_Rela);
2019 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2020 info->flags |= DF_TEXTREL;
2021 }
2022 }
2023 }
2024
2025 local_got = elf_local_got_refcounts (ibfd);
2026 if (!local_got)
2027 continue;
2028
2029 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2030 locsymcount = symtab_hdr->sh_info;
2031 end_local_got = local_got + locsymcount;
2032 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2033 s = htab->sgot;
2034 srela = htab->srelgot;
2035 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2036 {
2037 if (*local_got > 0)
2038 {
2039 *local_got = s->_raw_size;
2040 s->_raw_size += GOT_ENTRY_SIZE;
2041 if (*local_tls_type == GOT_TLS_GD)
2042 s->_raw_size += GOT_ENTRY_SIZE;
2043 if (info->shared)
2044 srela->_raw_size += sizeof (Elf64_External_Rela);
2045 }
2046 else
2047 *local_got = (bfd_vma) -1;
2048 }
2049 }
2050
2051 if (htab->tls_ldm_got.refcount > 0)
2052 {
2053 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2054 relocs. */
2055 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
2056 htab->sgot->_raw_size += 2 * GOT_ENTRY_SIZE;
2057 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2058 }
2059 else
2060 htab->tls_ldm_got.offset = -1;
2061
2062 /* Allocate global sym .plt and .got entries, and space for global
2063 sym dynamic relocs. */
2064 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2065
2066 /* We now have determined the sizes of the various dynamic sections.
2067 Allocate memory for them. */
2068 relocs = FALSE;
2069 for (s = dynobj->sections; s != NULL; s = s->next)
2070 {
2071 if ((s->flags & SEC_LINKER_CREATED) == 0)
2072 continue;
2073
2074 if (s == htab->splt
2075 || s == htab->sgot
2076 || s == htab->sgotplt)
2077 {
2078 /* Strip this section if we don't need it; see the
2079 comment below. */
2080 }
2081 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2082 {
2083 if (s->_raw_size != 0 && s != htab->srelplt)
2084 relocs = TRUE;
2085
2086 /* We use the reloc_count field as a counter if we need
2087 to copy relocs into the output file. */
2088 s->reloc_count = 0;
2089 }
2090 else
2091 {
2092 /* It's not one of our sections, so don't allocate space. */
2093 continue;
2094 }
2095
2096 if (s->_raw_size == 0)
2097 {
2098 /* If we don't need this section, strip it from the
2099 output file. This is to handle .rela.bss and
2100 .rela.plt. We must create it in
2101 create_dynamic_sections, because it must be created
2102 before the linker maps input sections to output
2103 sections. The linker does that before
2104 adjust_dynamic_symbol is called, and it is that
2105 function which decides whether anything needs to go
2106 into these sections. */
2107
2108 _bfd_strip_section_from_output (info, s);
2109 continue;
2110 }
2111
2112 /* Allocate memory for the section contents. We use bfd_zalloc
2113 here in case unused entries are not reclaimed before the
2114 section's contents are written out. This should not happen,
2115 but this way if it does, we get a R_390_NONE reloc instead
2116 of garbage. */
2117 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2118 if (s->contents == NULL)
2119 return FALSE;
2120 }
2121
2122 if (htab->elf.dynamic_sections_created)
2123 {
2124 /* Add some entries to the .dynamic section. We fill in the
2125 values later, in elf_s390_finish_dynamic_sections, but we
2126 must add the entries now so that we get the correct size for
2127 the .dynamic section. The DT_DEBUG entry is filled in by the
2128 dynamic linker and used by the debugger. */
2129 #define add_dynamic_entry(TAG, VAL) \
2130 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2131
2132 if (info->executable)
2133 {
2134 if (!add_dynamic_entry (DT_DEBUG, 0))
2135 return FALSE;
2136 }
2137
2138 if (htab->splt->_raw_size != 0)
2139 {
2140 if (!add_dynamic_entry (DT_PLTGOT, 0)
2141 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2142 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2143 || !add_dynamic_entry (DT_JMPREL, 0))
2144 return FALSE;
2145 }
2146
2147 if (relocs)
2148 {
2149 if (!add_dynamic_entry (DT_RELA, 0)
2150 || !add_dynamic_entry (DT_RELASZ, 0)
2151 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2152 return FALSE;
2153
2154 /* If any dynamic relocs apply to a read-only section,
2155 then we need a DT_TEXTREL entry. */
2156 if ((info->flags & DF_TEXTREL) == 0)
2157 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2158 (PTR) info);
2159
2160 if ((info->flags & DF_TEXTREL) != 0)
2161 {
2162 if (!add_dynamic_entry (DT_TEXTREL, 0))
2163 return FALSE;
2164 }
2165 }
2166 }
2167 #undef add_dynamic_entry
2168
2169 return TRUE;
2170 }
2171
2172 /* Return the base VMA address which should be subtracted from real addresses
2173 when resolving @dtpoff relocation.
2174 This is PT_TLS segment p_vaddr. */
2175
2176 static bfd_vma
2177 dtpoff_base (info)
2178 struct bfd_link_info *info;
2179 {
2180 /* If tls_sec is NULL, we should have signalled an error already. */
2181 if (elf_hash_table (info)->tls_sec == NULL)
2182 return 0;
2183 return elf_hash_table (info)->tls_sec->vma;
2184 }
2185
2186 /* Return the relocation value for @tpoff relocation
2187 if STT_TLS virtual address is ADDRESS. */
2188
2189 static bfd_vma
2190 tpoff (info, address)
2191 struct bfd_link_info *info;
2192 bfd_vma address;
2193 {
2194 struct elf_link_hash_table *htab = elf_hash_table (info);
2195
2196 /* If tls_sec is NULL, we should have signalled an error already. */
2197 if (htab->tls_sec == NULL)
2198 return 0;
2199 return htab->tls_size + htab->tls_sec->vma - address;
2200 }
2201
2202 /* Complain if TLS instruction relocation is against an invalid
2203 instruction. */
2204
2205 static void
2206 invalid_tls_insn (input_bfd, input_section, rel)
2207 bfd *input_bfd;
2208 asection *input_section;
2209 Elf_Internal_Rela *rel;
2210 {
2211 reloc_howto_type *howto;
2212
2213 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2214 (*_bfd_error_handler)
2215 (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"),
2216 bfd_archive_filename (input_bfd),
2217 bfd_get_section_name (input_bfd, input_section),
2218 (long) rel->r_offset,
2219 howto->name);
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 if (info->relocatable)
2244 return TRUE;
2245
2246 htab = elf_s390_hash_table (info);
2247 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2248 sym_hashes = elf_sym_hashes (input_bfd);
2249 local_got_offsets = elf_local_got_offsets (input_bfd);
2250
2251 rel = relocs;
2252 relend = relocs + input_section->reloc_count;
2253 for (; rel < relend; rel++)
2254 {
2255 unsigned int r_type;
2256 reloc_howto_type *howto;
2257 unsigned long r_symndx;
2258 struct elf_link_hash_entry *h;
2259 Elf_Internal_Sym *sym;
2260 asection *sec;
2261 bfd_vma off;
2262 bfd_vma relocation;
2263 bfd_boolean unresolved_reloc;
2264 bfd_reloc_status_type r;
2265 int tls_type;
2266
2267 r_type = ELF64_R_TYPE (rel->r_info);
2268 if (r_type == (int) R_390_GNU_VTINHERIT
2269 || r_type == (int) R_390_GNU_VTENTRY)
2270 continue;
2271 if (r_type >= (int) R_390_max)
2272 {
2273 bfd_set_error (bfd_error_bad_value);
2274 return FALSE;
2275 }
2276
2277 howto = elf_howto_table + r_type;
2278 r_symndx = ELF64_R_SYM (rel->r_info);
2279
2280 /* This is a final link. */
2281 h = NULL;
2282 sym = NULL;
2283 sec = NULL;
2284 unresolved_reloc = FALSE;
2285 if (r_symndx < symtab_hdr->sh_info)
2286 {
2287 sym = local_syms + r_symndx;
2288 sec = local_sections[r_symndx];
2289 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2290 }
2291 else
2292 {
2293 bfd_boolean warned ATTRIBUTE_UNUSED;
2294
2295 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
2296 symtab_hdr, relocation, sec,
2297 unresolved_reloc, info,
2298 warned);
2299 }
2300
2301 switch (r_type)
2302 {
2303 case R_390_GOTPLT12:
2304 case R_390_GOTPLT16:
2305 case R_390_GOTPLT20:
2306 case R_390_GOTPLT32:
2307 case R_390_GOTPLT64:
2308 case R_390_GOTPLTENT:
2309 /* There are three cases for a GOTPLT relocation. 1) The
2310 relocation is against the jump slot entry of a plt that
2311 will get emitted to the output file. 2) The relocation
2312 is against the jump slot of a plt entry that has been
2313 removed. elf_s390_adjust_gotplt has created a GOT entry
2314 as replacement. 3) The relocation is against a local symbol.
2315 Cases 2) and 3) are the same as the GOT relocation code
2316 so we just have to test for case 1 and fall through for
2317 the other two. */
2318 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2319 {
2320 bfd_vma plt_index;
2321
2322 /* Calc. index no.
2323 Current offset - size first entry / entry size. */
2324 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2325 PLT_ENTRY_SIZE;
2326
2327 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2328 addr & GOT addr. */
2329 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2330 unresolved_reloc = FALSE;
2331
2332 if (r_type == R_390_GOTPLTENT)
2333 relocation += htab->sgot->output_section->vma;
2334 break;
2335 }
2336 /* Fall through. */
2337
2338 case R_390_GOT12:
2339 case R_390_GOT16:
2340 case R_390_GOT20:
2341 case R_390_GOT32:
2342 case R_390_GOT64:
2343 case R_390_GOTENT:
2344 /* Relocation is to the entry for this symbol in the global
2345 offset table. */
2346 if (htab->sgot == NULL)
2347 abort ();
2348
2349 if (h != NULL)
2350 {
2351 bfd_boolean dyn;
2352
2353 off = h->got.offset;
2354 dyn = htab->elf.dynamic_sections_created;
2355 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2356 || (info->shared
2357 && (info->symbolic
2358 || h->dynindx == -1
2359 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2360 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
2361 || (ELF_ST_VISIBILITY (h->other)
2362 && h->root.type == bfd_link_hash_undefweak))
2363 {
2364 /* This is actually a static link, or it is a
2365 -Bsymbolic link and the symbol is defined
2366 locally, or the symbol was forced to be local
2367 because of a version file. We must initialize
2368 this entry in the global offset table. Since the
2369 offset must always be a multiple of 2, we use the
2370 least significant bit to record whether we have
2371 initialized it already.
2372
2373 When doing a dynamic link, we create a .rel.got
2374 relocation entry to initialize the value. This
2375 is done in the finish_dynamic_symbol routine. */
2376 if ((off & 1) != 0)
2377 off &= ~1;
2378 else
2379 {
2380 bfd_put_64 (output_bfd, relocation,
2381 htab->sgot->contents + off);
2382 h->got.offset |= 1;
2383 }
2384 }
2385 else
2386 unresolved_reloc = FALSE;
2387 }
2388 else
2389 {
2390 if (local_got_offsets == NULL)
2391 abort ();
2392
2393 off = local_got_offsets[r_symndx];
2394
2395 /* The offset must always be a multiple of 8. We use
2396 the least significant bit to record whether we have
2397 already generated the necessary reloc. */
2398 if ((off & 1) != 0)
2399 off &= ~1;
2400 else
2401 {
2402 bfd_put_64 (output_bfd, relocation,
2403 htab->sgot->contents + off);
2404
2405 if (info->shared)
2406 {
2407 asection *s;
2408 Elf_Internal_Rela outrel;
2409 bfd_byte *loc;
2410
2411 s = htab->srelgot;
2412 if (s == NULL)
2413 abort ();
2414
2415 outrel.r_offset = (htab->sgot->output_section->vma
2416 + htab->sgot->output_offset
2417 + off);
2418 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2419 outrel.r_addend = relocation;
2420 loc = s->contents;
2421 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2422 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2423 }
2424
2425 local_got_offsets[r_symndx] |= 1;
2426 }
2427 }
2428
2429 if (off >= (bfd_vma) -2)
2430 abort ();
2431
2432 relocation = htab->sgot->output_offset + off;
2433
2434 /* For @GOTENT the relocation is against the offset between
2435 the instruction and the symbols entry in the GOT and not
2436 between the start of the GOT and the symbols entry. We
2437 add the vma of the GOT to get the correct value. */
2438 if ( r_type == R_390_GOTENT
2439 || r_type == R_390_GOTPLTENT)
2440 relocation += htab->sgot->output_section->vma;
2441
2442 break;
2443
2444 case R_390_GOTOFF16:
2445 case R_390_GOTOFF32:
2446 case R_390_GOTOFF64:
2447 /* Relocation is relative to the start of the global offset
2448 table. */
2449
2450 /* Note that sgot->output_offset is not involved in this
2451 calculation. We always want the start of .got. If we
2452 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2453 permitted by the ABI, we might have to change this
2454 calculation. */
2455 relocation -= htab->sgot->output_section->vma;
2456 break;
2457
2458 case R_390_GOTPC:
2459 case R_390_GOTPCDBL:
2460 /* Use global offset table as symbol value. */
2461 relocation = htab->sgot->output_section->vma;
2462 unresolved_reloc = FALSE;
2463 break;
2464
2465 case R_390_PLT16DBL:
2466 case R_390_PLT32:
2467 case R_390_PLT32DBL:
2468 case R_390_PLT64:
2469 /* Relocation is to the entry for this symbol in the
2470 procedure linkage table. */
2471
2472 /* Resolve a PLT32 reloc against a local symbol directly,
2473 without using the procedure linkage table. */
2474 if (h == NULL)
2475 break;
2476
2477 if (h->plt.offset == (bfd_vma) -1
2478 || htab->splt == NULL)
2479 {
2480 /* We didn't make a PLT entry for this symbol. This
2481 happens when statically linking PIC code, or when
2482 using -Bsymbolic. */
2483 break;
2484 }
2485
2486 relocation = (htab->splt->output_section->vma
2487 + htab->splt->output_offset
2488 + h->plt.offset);
2489 unresolved_reloc = FALSE;
2490 break;
2491
2492 case R_390_PLTOFF16:
2493 case R_390_PLTOFF32:
2494 case R_390_PLTOFF64:
2495 /* Relocation is to the entry for this symbol in the
2496 procedure linkage table relative to the start of the GOT. */
2497
2498 /* For local symbols or if we didn't make a PLT entry for
2499 this symbol resolve the symbol directly. */
2500 if ( h == NULL
2501 || h->plt.offset == (bfd_vma) -1
2502 || htab->splt == NULL)
2503 {
2504 relocation -= htab->sgot->output_section->vma;
2505 break;
2506 }
2507
2508 relocation = (htab->splt->output_section->vma
2509 + htab->splt->output_offset
2510 + h->plt.offset
2511 - htab->sgot->output_section->vma);
2512 unresolved_reloc = FALSE;
2513 break;
2514
2515 case R_390_8:
2516 case R_390_16:
2517 case R_390_32:
2518 case R_390_64:
2519 case R_390_PC16:
2520 case R_390_PC16DBL:
2521 case R_390_PC32:
2522 case R_390_PC32DBL:
2523 case R_390_PC64:
2524 /* r_symndx will be zero only for relocs against symbols
2525 from removed linkonce sections, or sections discarded by
2526 a linker script. */
2527 if (r_symndx == 0
2528 || (input_section->flags & SEC_ALLOC) == 0)
2529 break;
2530
2531 if ((info->shared
2532 && (h == NULL
2533 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2534 || h->root.type != bfd_link_hash_undefweak)
2535 && ((r_type != R_390_PC16
2536 && r_type != R_390_PC16DBL
2537 && r_type != R_390_PC32
2538 && r_type != R_390_PC32DBL
2539 && r_type != R_390_PC64)
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->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2547 && (((h->elf_link_hash_flags
2548 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2549 && (h->elf_link_hash_flags
2550 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2551 || h->root.type == bfd_link_hash_undefweak
2552 || h->root.type == bfd_link_hash_undefined)))
2553 {
2554 Elf_Internal_Rela outrel;
2555 bfd_boolean skip, relocate;
2556 asection *sreloc;
2557 bfd_byte *loc;
2558
2559 /* When generating a shared object, these relocations
2560 are copied into the output file to be resolved at run
2561 time. */
2562 skip = FALSE;
2563 relocate = FALSE;
2564
2565 outrel.r_offset =
2566 _bfd_elf_section_offset (output_bfd, info, input_section,
2567 rel->r_offset);
2568 if (outrel.r_offset == (bfd_vma) -1)
2569 skip = TRUE;
2570 else if (outrel.r_offset == (bfd_vma) -2)
2571 skip = TRUE, relocate = TRUE;
2572
2573 outrel.r_offset += (input_section->output_section->vma
2574 + input_section->output_offset);
2575
2576 if (skip)
2577 memset (&outrel, 0, sizeof outrel);
2578 else if (h != NULL
2579 && h->dynindx != -1
2580 && (r_type == R_390_PC16
2581 || r_type == R_390_PC16DBL
2582 || r_type == R_390_PC32
2583 || r_type == R_390_PC32DBL
2584 || r_type == R_390_PC64
2585 || !info->shared
2586 || !info->symbolic
2587 || (h->elf_link_hash_flags
2588 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2589 {
2590 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2591 outrel.r_addend = rel->r_addend;
2592 }
2593 else
2594 {
2595 /* This symbol is local, or marked to become local. */
2596 outrel.r_addend = relocation + rel->r_addend;
2597 if (r_type == R_390_64)
2598 {
2599 relocate = TRUE;
2600 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2601 }
2602 else
2603 {
2604 long sindx;
2605
2606 if (bfd_is_abs_section (sec))
2607 sindx = 0;
2608 else if (sec == NULL || sec->owner == NULL)
2609 {
2610 bfd_set_error(bfd_error_bad_value);
2611 return FALSE;
2612 }
2613 else
2614 {
2615 asection *osec;
2616
2617 osec = sec->output_section;
2618 sindx = elf_section_data (osec)->dynindx;
2619 BFD_ASSERT (sindx > 0);
2620
2621 /* We are turning this relocation into one
2622 against a section symbol, so subtract out
2623 the output section's address but not the
2624 offset of the input section in the output
2625 section. */
2626
2627 outrel.r_addend -= osec->vma;
2628 }
2629 outrel.r_info = ELF64_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 (Elf64_External_Rela);
2639 bfd_elf64_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
2649 break;
2650
2651 /* Relocations for tls literal pool entries. */
2652 case R_390_TLS_IE64:
2653 if (info->shared)
2654 {
2655 Elf_Internal_Rela outrel;
2656 asection *sreloc;
2657 bfd_byte *loc;
2658
2659 outrel.r_offset = rel->r_offset
2660 + input_section->output_section->vma
2661 + input_section->output_offset;
2662 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2663 sreloc = elf_section_data (input_section)->sreloc;
2664 if (sreloc == NULL)
2665 abort ();
2666 loc = sreloc->contents;
2667 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2668 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2669 }
2670 /* Fall through. */
2671
2672 case R_390_TLS_GD64:
2673 case R_390_TLS_GOTIE64:
2674 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2675 tls_type = GOT_UNKNOWN;
2676 if (h == NULL && local_got_offsets)
2677 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2678 else if (h != NULL)
2679 {
2680 tls_type = elf_s390_hash_entry(h)->tls_type;
2681 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2682 r_type = R_390_TLS_LE64;
2683 }
2684 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2685 r_type = R_390_TLS_IE64;
2686
2687 if (r_type == R_390_TLS_LE64)
2688 {
2689 /* This relocation gets optimized away by the local exec
2690 access optimization. */
2691 BFD_ASSERT (! unresolved_reloc);
2692 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2693 contents + rel->r_offset);
2694 continue;
2695 }
2696
2697 if (htab->sgot == NULL)
2698 abort ();
2699
2700 if (h != NULL)
2701 off = h->got.offset;
2702 else
2703 {
2704 if (local_got_offsets == NULL)
2705 abort ();
2706
2707 off = local_got_offsets[r_symndx];
2708 }
2709
2710 emit_tls_relocs:
2711
2712 if ((off & 1) != 0)
2713 off &= ~1;
2714 else
2715 {
2716 Elf_Internal_Rela outrel;
2717 bfd_byte *loc;
2718 int dr_type, indx;
2719
2720 if (htab->srelgot == NULL)
2721 abort ();
2722
2723 outrel.r_offset = (htab->sgot->output_section->vma
2724 + htab->sgot->output_offset + off);
2725
2726 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2727 if (r_type == R_390_TLS_GD64)
2728 dr_type = R_390_TLS_DTPMOD;
2729 else
2730 dr_type = R_390_TLS_TPOFF;
2731 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2732 outrel.r_addend = relocation - dtpoff_base (info);
2733 else
2734 outrel.r_addend = 0;
2735 outrel.r_info = ELF64_R_INFO (indx, dr_type);
2736 loc = htab->srelgot->contents;
2737 loc += htab->srelgot->reloc_count++
2738 * sizeof (Elf64_External_Rela);
2739 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2740
2741 if (r_type == R_390_TLS_GD64)
2742 {
2743 if (indx == 0)
2744 {
2745 BFD_ASSERT (! unresolved_reloc);
2746 bfd_put_64 (output_bfd,
2747 relocation - dtpoff_base (info),
2748 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2749 }
2750 else
2751 {
2752 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2753 outrel.r_offset += GOT_ENTRY_SIZE;
2754 outrel.r_addend = 0;
2755 htab->srelgot->reloc_count++;
2756 loc += sizeof (Elf64_External_Rela);
2757 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2758 }
2759 }
2760
2761 if (h != NULL)
2762 h->got.offset |= 1;
2763 else
2764 local_got_offsets[r_symndx] |= 1;
2765 }
2766
2767 if (off >= (bfd_vma) -2)
2768 abort ();
2769 if (r_type == ELF64_R_TYPE (rel->r_info))
2770 {
2771 relocation = htab->sgot->output_offset + off;
2772 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
2773 relocation += htab->sgot->output_section->vma;
2774 unresolved_reloc = FALSE;
2775 }
2776 else
2777 {
2778 bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
2779 contents + rel->r_offset);
2780 continue;
2781 }
2782 break;
2783
2784 case R_390_TLS_GOTIE12:
2785 case R_390_TLS_GOTIE20:
2786 case R_390_TLS_IEENT:
2787 if (h == NULL)
2788 {
2789 if (local_got_offsets == NULL)
2790 abort();
2791 off = local_got_offsets[r_symndx];
2792 if (info->shared)
2793 goto emit_tls_relocs;
2794 }
2795 else
2796 {
2797 off = h->got.offset;
2798 tls_type = elf_s390_hash_entry(h)->tls_type;
2799 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2800 goto emit_tls_relocs;
2801 }
2802
2803 if (htab->sgot == NULL)
2804 abort ();
2805
2806 BFD_ASSERT (! unresolved_reloc);
2807 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2808 htab->sgot->contents + off);
2809 relocation = htab->sgot->output_offset + off;
2810 if (r_type == R_390_TLS_IEENT)
2811 relocation += htab->sgot->output_section->vma;
2812 unresolved_reloc = FALSE;
2813 break;
2814
2815 case R_390_TLS_LDM64:
2816 if (! info->shared)
2817 /* The literal pool entry this relocation refers to gets ignored
2818 by the optimized code of the local exec model. Do nothing
2819 and the value will turn out zero. */
2820 continue;
2821
2822 if (htab->sgot == NULL)
2823 abort ();
2824
2825 off = htab->tls_ldm_got.offset;
2826 if (off & 1)
2827 off &= ~1;
2828 else
2829 {
2830 Elf_Internal_Rela outrel;
2831 bfd_byte *loc;
2832
2833 if (htab->srelgot == NULL)
2834 abort ();
2835
2836 outrel.r_offset = (htab->sgot->output_section->vma
2837 + htab->sgot->output_offset + off);
2838
2839 bfd_put_64 (output_bfd, 0,
2840 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2841 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2842 outrel.r_addend = 0;
2843 loc = htab->srelgot->contents;
2844 loc += htab->srelgot->reloc_count++
2845 * sizeof (Elf64_External_Rela);
2846 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2847 htab->tls_ldm_got.offset |= 1;
2848 }
2849 relocation = htab->sgot->output_offset + off;
2850 unresolved_reloc = FALSE;
2851 break;
2852
2853 case R_390_TLS_LE64:
2854 if (info->shared)
2855 {
2856 /* Linking a shared library with non-fpic code requires
2857 a R_390_TLS_TPOFF relocation. */
2858 Elf_Internal_Rela outrel;
2859 asection *sreloc;
2860 bfd_byte *loc;
2861 int indx;
2862
2863 outrel.r_offset = rel->r_offset
2864 + input_section->output_section->vma
2865 + input_section->output_offset;
2866 if (h != NULL && h->dynindx != -1)
2867 indx = h->dynindx;
2868 else
2869 indx = 0;
2870 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2871 if (indx == 0)
2872 outrel.r_addend = relocation - dtpoff_base (info);
2873 else
2874 outrel.r_addend = 0;
2875 sreloc = elf_section_data (input_section)->sreloc;
2876 if (sreloc == NULL)
2877 abort ();
2878 loc = sreloc->contents;
2879 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2880 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2881 }
2882 else
2883 {
2884 BFD_ASSERT (! unresolved_reloc);
2885 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2886 contents + rel->r_offset);
2887 }
2888 continue;
2889
2890 case R_390_TLS_LDO64:
2891 if (info->shared || (input_section->flags & SEC_CODE) == 0)
2892 relocation -= dtpoff_base (info);
2893 else
2894 /* When converting LDO to LE, we must negate. */
2895 relocation = -tpoff (info, relocation);
2896 break;
2897
2898 /* Relocations for tls instructions. */
2899 case R_390_TLS_LOAD:
2900 case R_390_TLS_GDCALL:
2901 case R_390_TLS_LDCALL:
2902 tls_type = GOT_UNKNOWN;
2903 if (h == NULL && local_got_offsets)
2904 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2905 else if (h != NULL)
2906 tls_type = elf_s390_hash_entry(h)->tls_type;
2907
2908 if (tls_type == GOT_TLS_GD)
2909 continue;
2910
2911 if (r_type == R_390_TLS_LOAD)
2912 {
2913 if (!info->shared && (h == NULL || h->dynindx == -1))
2914 {
2915 /* IE->LE transition. Four valid cases:
2916 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2917 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2918 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2919 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2920 unsigned int insn0, insn1, ry;
2921
2922 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2923 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2924 if (insn1 != 0x0004)
2925 invalid_tls_insn (input_bfd, input_section, rel);
2926 ry = 0;
2927 if ((insn0 & 0xff00f000) == 0xe3000000)
2928 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2929 ry = (insn0 & 0x000f0000);
2930 else if ((insn0 & 0xff0f0000) == 0xe3000000)
2931 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2932 ry = (insn0 & 0x0000f000) << 4;
2933 else if ((insn0 & 0xff00f000) == 0xe300c000)
2934 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2935 ry = (insn0 & 0x000f0000);
2936 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
2937 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2938 ry = (insn0 & 0x0000f000) << 4;
2939 else
2940 invalid_tls_insn (input_bfd, input_section, rel);
2941 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
2942 insn1 = 0x000d;
2943 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2944 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2945 }
2946 }
2947 else if (r_type == R_390_TLS_GDCALL)
2948 {
2949 unsigned int insn0, insn1;
2950
2951 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2952 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2953 if ((insn0 & 0xffff0000) != 0xc0e50000)
2954 invalid_tls_insn (input_bfd, input_section, rel);
2955 if (!info->shared && (h == NULL || h->dynindx == -1))
2956 {
2957 /* GD->LE transition.
2958 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2959 insn0 = 0xc0040000;
2960 insn1 = 0x0000;
2961 }
2962 else
2963 {
2964 /* GD->IE transition.
2965 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2966 insn0 = 0xe322c000;
2967 insn1 = 0x0004;
2968 }
2969 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2970 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2971 }
2972 else if (r_type == R_390_TLS_LDCALL)
2973 {
2974 if (!info->shared)
2975 {
2976 unsigned int insn0, insn1;
2977
2978 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2979 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2980 if ((insn0 & 0xffff0000) != 0xc0e50000)
2981 invalid_tls_insn (input_bfd, input_section, rel);
2982 /* LD->LE transition.
2983 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2984 insn0 = 0xc0040000;
2985 insn1 = 0x0000;
2986 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2987 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2988 }
2989 }
2990 continue;
2991
2992 default:
2993 break;
2994 }
2995
2996 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2997 because such sections are not SEC_ALLOC and thus ld.so will
2998 not process them. */
2999 if (unresolved_reloc
3000 && !((input_section->flags & SEC_DEBUGGING) != 0
3001 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3002 (*_bfd_error_handler)
3003 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3004 bfd_archive_filename (input_bfd),
3005 bfd_get_section_name (input_bfd, input_section),
3006 (long) rel->r_offset,
3007 h->root.root.string);
3008
3009 if (r_type == R_390_20
3010 || r_type == R_390_GOT20
3011 || r_type == R_390_GOTPLT20
3012 || r_type == R_390_TLS_GOTIE20)
3013 {
3014 relocation += rel->r_addend;
3015 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3016 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3017 contents, rel->r_offset,
3018 relocation, 0);
3019 }
3020 else
3021 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3022 contents, rel->r_offset,
3023 relocation, rel->r_addend);
3024
3025 if (r != bfd_reloc_ok)
3026 {
3027 const char *name;
3028
3029 if (h != NULL)
3030 name = h->root.root.string;
3031 else
3032 {
3033 name = bfd_elf_string_from_elf_section (input_bfd,
3034 symtab_hdr->sh_link,
3035 sym->st_name);
3036 if (name == NULL)
3037 return FALSE;
3038 if (*name == '\0')
3039 name = bfd_section_name (input_bfd, sec);
3040 }
3041
3042 if (r == bfd_reloc_overflow)
3043 {
3044
3045 if (! ((*info->callbacks->reloc_overflow)
3046 (info, name, howto->name, (bfd_vma) 0,
3047 input_bfd, input_section, rel->r_offset)))
3048 return FALSE;
3049 }
3050 else
3051 {
3052 (*_bfd_error_handler)
3053 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
3054 bfd_archive_filename (input_bfd),
3055 bfd_get_section_name (input_bfd, input_section),
3056 (long) rel->r_offset, name, (int) r);
3057 return FALSE;
3058 }
3059 }
3060 }
3061
3062 return TRUE;
3063 }
3064
3065 /* Finish up dynamic symbol handling. We set the contents of various
3066 dynamic sections here. */
3067
3068 static bfd_boolean
3069 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3070 bfd *output_bfd;
3071 struct bfd_link_info *info;
3072 struct elf_link_hash_entry *h;
3073 Elf_Internal_Sym *sym;
3074 {
3075 struct elf_s390_link_hash_table *htab;
3076
3077 htab = elf_s390_hash_table (info);
3078
3079 if (h->plt.offset != (bfd_vma) -1)
3080 {
3081 bfd_vma plt_index;
3082 bfd_vma got_offset;
3083 Elf_Internal_Rela rela;
3084 bfd_byte *loc;
3085
3086 /* This symbol has an entry in the procedure linkage table. Set
3087 it up. */
3088
3089 if (h->dynindx == -1
3090 || htab->splt == NULL
3091 || htab->sgotplt == NULL
3092 || htab->srelplt == NULL)
3093 abort ();
3094
3095 /* Calc. index no.
3096 Current offset - size first entry / entry size. */
3097 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3098
3099 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3100 addr & GOT addr. */
3101 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3102
3103 /* Fill in the blueprint of a PLT. */
3104 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3105 htab->splt->contents + h->plt.offset);
3106 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3107 htab->splt->contents + h->plt.offset + 4);
3108 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3109 htab->splt->contents + h->plt.offset + 8);
3110 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3111 htab->splt->contents + h->plt.offset + 12);
3112 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3113 htab->splt->contents + h->plt.offset + 16);
3114 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5,
3115 htab->splt->contents + h->plt.offset + 20);
3116 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6,
3117 htab->splt->contents + h->plt.offset + 24);
3118 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7,
3119 htab->splt->contents + h->plt.offset + 28);
3120 /* Fixup the relative address to the GOT entry */
3121 bfd_put_32 (output_bfd,
3122 (htab->sgotplt->output_section->vma +
3123 htab->sgotplt->output_offset + got_offset
3124 - (htab->splt->output_section->vma + h->plt.offset))/2,
3125 htab->splt->contents + h->plt.offset + 2);
3126 /* Fixup the relative branch to PLT 0 */
3127 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3128 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3129 htab->splt->contents + h->plt.offset + 24);
3130 /* Fixup offset into symbol table */
3131 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3132 htab->splt->contents + h->plt.offset + 28);
3133
3134 /* Fill in the entry in the global offset table.
3135 Points to instruction after GOT offset. */
3136 bfd_put_64 (output_bfd,
3137 (htab->splt->output_section->vma
3138 + htab->splt->output_offset
3139 + h->plt.offset
3140 + 14),
3141 htab->sgotplt->contents + got_offset);
3142
3143 /* Fill in the entry in the .rela.plt section. */
3144 rela.r_offset = (htab->sgotplt->output_section->vma
3145 + htab->sgotplt->output_offset
3146 + got_offset);
3147 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3148 rela.r_addend = 0;
3149 loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela);
3150 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3151
3152 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3153 {
3154 /* Mark the symbol as undefined, rather than as defined in
3155 the .plt section. Leave the value alone. This is a clue
3156 for the dynamic linker, to make function pointer
3157 comparisons work between an application and shared
3158 library. */
3159 sym->st_shndx = SHN_UNDEF;
3160 }
3161 }
3162
3163 if (h->got.offset != (bfd_vma) -1
3164 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3165 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3166 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3167 {
3168 Elf_Internal_Rela rela;
3169 bfd_byte *loc;
3170
3171 /* This symbol has an entry in the global offset table. Set it
3172 up. */
3173 if (htab->sgot == NULL || htab->srelgot == NULL)
3174 abort ();
3175
3176 rela.r_offset = (htab->sgot->output_section->vma
3177 + htab->sgot->output_offset
3178 + (h->got.offset &~ (bfd_vma) 1));
3179
3180 /* If this is a static link, or it is a -Bsymbolic link and the
3181 symbol is defined locally or was forced to be local because
3182 of a version file, we just want to emit a RELATIVE reloc.
3183 The entry in the global offset table will already have been
3184 initialized in the relocate_section function. */
3185 if (info->shared
3186 && (info->symbolic
3187 || h->dynindx == -1
3188 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
3189 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3190 {
3191 BFD_ASSERT((h->got.offset & 1) != 0);
3192 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3193 rela.r_addend = (h->root.u.def.value
3194 + h->root.u.def.section->output_section->vma
3195 + h->root.u.def.section->output_offset);
3196 }
3197 else
3198 {
3199 BFD_ASSERT((h->got.offset & 1) == 0);
3200 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3201 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3202 rela.r_addend = 0;
3203 }
3204
3205 loc = htab->srelgot->contents;
3206 loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3207 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3208 }
3209
3210 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3211 {
3212 Elf_Internal_Rela rela;
3213 bfd_byte *loc;
3214
3215 /* This symbols needs a copy reloc. Set it up. */
3216
3217 if (h->dynindx == -1
3218 || (h->root.type != bfd_link_hash_defined
3219 && h->root.type != bfd_link_hash_defweak)
3220 || htab->srelbss == NULL)
3221 abort ();
3222
3223 rela.r_offset = (h->root.u.def.value
3224 + h->root.u.def.section->output_section->vma
3225 + h->root.u.def.section->output_offset);
3226 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3227 rela.r_addend = 0;
3228 loc = htab->srelbss->contents;
3229 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3230 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3231 }
3232
3233 /* Mark some specially defined symbols as absolute. */
3234 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3235 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3236 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3237 sym->st_shndx = SHN_ABS;
3238
3239 return TRUE;
3240 }
3241
3242 /* Used to decide how to sort relocs in an optimal manner for the
3243 dynamic linker, before writing them out. */
3244
3245 static enum elf_reloc_type_class
3246 elf_s390_reloc_type_class (rela)
3247 const Elf_Internal_Rela *rela;
3248 {
3249 switch ((int) ELF64_R_TYPE (rela->r_info))
3250 {
3251 case R_390_RELATIVE:
3252 return reloc_class_relative;
3253 case R_390_JMP_SLOT:
3254 return reloc_class_plt;
3255 case R_390_COPY:
3256 return reloc_class_copy;
3257 default:
3258 return reloc_class_normal;
3259 }
3260 }
3261
3262 /* Finish up the dynamic sections. */
3263
3264 static bfd_boolean
3265 elf_s390_finish_dynamic_sections (output_bfd, info)
3266 bfd *output_bfd;
3267 struct bfd_link_info *info;
3268 {
3269 struct elf_s390_link_hash_table *htab;
3270 bfd *dynobj;
3271 asection *sdyn;
3272
3273 htab = elf_s390_hash_table (info);
3274 dynobj = htab->elf.dynobj;
3275 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3276
3277 if (htab->elf.dynamic_sections_created)
3278 {
3279 Elf64_External_Dyn *dyncon, *dynconend;
3280
3281 if (sdyn == NULL || htab->sgot == NULL)
3282 abort ();
3283
3284 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3285 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3286 for (; dyncon < dynconend; dyncon++)
3287 {
3288 Elf_Internal_Dyn dyn;
3289 asection *s;
3290
3291 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3292
3293 switch (dyn.d_tag)
3294 {
3295 default:
3296 continue;
3297
3298 case DT_PLTGOT:
3299 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3300 break;
3301
3302 case DT_JMPREL:
3303 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3304 break;
3305
3306 case DT_PLTRELSZ:
3307 s = htab->srelplt->output_section;
3308 if (s->_cooked_size != 0)
3309 dyn.d_un.d_val = s->_cooked_size;
3310 else
3311 dyn.d_un.d_val = s->_raw_size;
3312 break;
3313
3314 case DT_RELASZ:
3315 /* The procedure linkage table relocs (DT_JMPREL) should
3316 not be included in the overall relocs (DT_RELA).
3317 Therefore, we override the DT_RELASZ entry here to
3318 make it not include the JMPREL relocs. Since the
3319 linker script arranges for .rela.plt to follow all
3320 other relocation sections, we don't have to worry
3321 about changing the DT_RELA entry. */
3322 s = htab->srelplt->output_section;
3323 if (s->_cooked_size != 0)
3324 dyn.d_un.d_val -= s->_cooked_size;
3325 else
3326 dyn.d_un.d_val -= s->_raw_size;
3327 break;
3328 }
3329
3330 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3331 }
3332
3333 /* Fill in the special first entry in the procedure linkage table. */
3334 if (htab->splt && htab->splt->_raw_size > 0)
3335 {
3336 /* fill in blueprint for plt 0 entry */
3337 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0,
3338 htab->splt->contents );
3339 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3340 htab->splt->contents +4 );
3341 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3342 htab->splt->contents +12 );
3343 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3344 htab->splt->contents +16 );
3345 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3346 htab->splt->contents +20 );
3347 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6,
3348 htab->splt->contents + 24);
3349 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7,
3350 htab->splt->contents + 28 );
3351 /* Fixup relative address to start of GOT */
3352 bfd_put_32 (output_bfd,
3353 (htab->sgotplt->output_section->vma +
3354 htab->sgotplt->output_offset
3355 - htab->splt->output_section->vma - 6)/2,
3356 htab->splt->contents + 8);
3357 }
3358 elf_section_data (htab->splt->output_section)
3359 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
3360 }
3361
3362 if (htab->sgotplt)
3363 {
3364 /* Fill in the first three entries in the global offset table. */
3365 if (htab->sgotplt->_raw_size > 0)
3366 {
3367 bfd_put_64 (output_bfd,
3368 (sdyn == NULL ? (bfd_vma) 0
3369 : sdyn->output_section->vma + sdyn->output_offset),
3370 htab->sgotplt->contents);
3371 /* One entry for shared object struct ptr. */
3372 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3373 /* One entry for _dl_runtime_resolve. */
3374 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12);
3375 }
3376
3377 elf_section_data (htab->sgot->output_section)
3378 ->this_hdr.sh_entsize = 8;
3379 }
3380 return TRUE;
3381 }
3382
3383 /* Why was the hash table entry size definition changed from
3384 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3385 this is the only reason for the s390_elf64_size_info structure. */
3386
3387 const struct elf_size_info s390_elf64_size_info =
3388 {
3389 sizeof (Elf64_External_Ehdr),
3390 sizeof (Elf64_External_Phdr),
3391 sizeof (Elf64_External_Shdr),
3392 sizeof (Elf64_External_Rel),
3393 sizeof (Elf64_External_Rela),
3394 sizeof (Elf64_External_Sym),
3395 sizeof (Elf64_External_Dyn),
3396 sizeof (Elf_External_Note),
3397 8, /* hash-table entry size. */
3398 1, /* internal relocations per external relocations. */
3399 64, /* arch_size. */
3400 3, /* log_file_align. */
3401 ELFCLASS64, EV_CURRENT,
3402 bfd_elf64_write_out_phdrs,
3403 bfd_elf64_write_shdrs_and_ehdr,
3404 bfd_elf64_write_relocs,
3405 bfd_elf64_swap_symbol_in,
3406 bfd_elf64_swap_symbol_out,
3407 bfd_elf64_slurp_reloc_table,
3408 bfd_elf64_slurp_symbol_table,
3409 bfd_elf64_swap_dyn_in,
3410 bfd_elf64_swap_dyn_out,
3411 bfd_elf64_swap_reloc_in,
3412 bfd_elf64_swap_reloc_out,
3413 bfd_elf64_swap_reloca_in,
3414 bfd_elf64_swap_reloca_out
3415 };
3416
3417 #define TARGET_BIG_SYM bfd_elf64_s390_vec
3418 #define TARGET_BIG_NAME "elf64-s390"
3419 #define ELF_ARCH bfd_arch_s390
3420 #define ELF_MACHINE_CODE EM_S390
3421 #define ELF_MACHINE_ALT1 EM_S390_OLD
3422 #define ELF_MAXPAGESIZE 0x1000
3423
3424 #define elf_backend_size_info s390_elf64_size_info
3425
3426 #define elf_backend_can_gc_sections 1
3427 #define elf_backend_can_refcount 1
3428 #define elf_backend_want_got_plt 1
3429 #define elf_backend_plt_readonly 1
3430 #define elf_backend_want_plt_sym 0
3431 #define elf_backend_got_header_size 24
3432 #define elf_backend_rela_normal 1
3433
3434 #define elf_info_to_howto elf_s390_info_to_howto
3435
3436 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3437 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3438 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3439
3440 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3441 #define elf_backend_check_relocs elf_s390_check_relocs
3442 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3443 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3444 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3445 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3446 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3447 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3448 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3449 #define elf_backend_relocate_section elf_s390_relocate_section
3450 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3451 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3452
3453 #define bfd_elf64_mkobject elf_s390_mkobject
3454 #define elf_backend_object_p elf_s390_object_p
3455
3456 #include "elf64-target.h"
GDB Binutils - Deliverables
This page took 0.102727 seconds and 4 git commands to generate.