]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blame - bfd/elf64-s390.c
S/390: ifunc: Enable the ifunc tests.
[thirdparty/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
b90efa5b 2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
a85d7ed0
NC
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
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC
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
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC
24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0
NC
27#include "elf/s390.h"
28
29/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
30 from smaller values. Start with zero, widen, *then* decrement. */
31#define MINUS_ONE (((bfd_vma)0) - 1)
32
2c3fc389
NC
33static bfd_reloc_status_type
34s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36static bfd_reloc_status_type
37s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
38 asection *, bfd *, char **);
39
a85d7ed0
NC
40/* The relocation "howto" table. */
41static reloc_howto_type elf_howto_table[] =
42{
43 HOWTO (R_390_NONE, /* type */
44 0, /* rightshift */
6346d5ca 45 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 46 0, /* bitsize */
b34976b6 47 FALSE, /* pc_relative */
a85d7ed0
NC
48 0, /* bitpos */
49 complain_overflow_dont, /* complain_on_overflow */
50 bfd_elf_generic_reloc, /* special_function */
51 "R_390_NONE", /* name */
b34976b6 52 FALSE, /* partial_inplace */
a85d7ed0
NC
53 0, /* src_mask */
54 0, /* dst_mask */
b34976b6
AM
55 FALSE), /* pcrel_offset */
56
5236c819
MS
57 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
58 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
59 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
60 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
61 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
63 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
65 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 67 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS
68 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
69 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
71 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
73 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
75 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
77 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
79 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
81 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
83 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
85 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
87 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
93 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
97 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
99 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
100 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
101 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
103 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
105 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
107 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
109 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
111 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
113 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
114 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
115 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
119 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
121 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
123 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
125 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS
129 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
130 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
131 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
133 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
135 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
136 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
138 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
139 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
140 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
141 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
143 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
144 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
146 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
147 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
149 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
151 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
152 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
154 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
155 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
157 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
159 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
161 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
bd1ea41b
MS
163 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
164 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
165 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
166 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
167 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
169 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
170 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK
171 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
fb798c50
AK
173 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
175 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
177 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
178 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
179 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC
181};
182
183/* GNU extension to record C++ vtable hierarchy. */
184static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 185 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 186static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 187 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);
a85d7ed0
NC
188
189static reloc_howto_type *
2c3fc389
NC
190elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
191 bfd_reloc_code_real_type code)
a85d7ed0 192{
0451c93c
MS
193 switch (code)
194 {
195 case BFD_RELOC_NONE:
196 return &elf_howto_table[(int) R_390_NONE];
197 case BFD_RELOC_8:
198 return &elf_howto_table[(int) R_390_8];
199 case BFD_RELOC_390_12:
200 return &elf_howto_table[(int) R_390_12];
201 case BFD_RELOC_16:
202 return &elf_howto_table[(int) R_390_16];
203 case BFD_RELOC_32:
204 return &elf_howto_table[(int) R_390_32];
205 case BFD_RELOC_CTOR:
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_32_PCREL:
208 return &elf_howto_table[(int) R_390_PC32];
209 case BFD_RELOC_390_GOT12:
210 return &elf_howto_table[(int) R_390_GOT12];
211 case BFD_RELOC_32_GOT_PCREL:
212 return &elf_howto_table[(int) R_390_GOT32];
213 case BFD_RELOC_390_PLT32:
214 return &elf_howto_table[(int) R_390_PLT32];
215 case BFD_RELOC_390_COPY:
216 return &elf_howto_table[(int) R_390_COPY];
217 case BFD_RELOC_390_GLOB_DAT:
218 return &elf_howto_table[(int) R_390_GLOB_DAT];
219 case BFD_RELOC_390_JMP_SLOT:
220 return &elf_howto_table[(int) R_390_JMP_SLOT];
221 case BFD_RELOC_390_RELATIVE:
222 return &elf_howto_table[(int) R_390_RELATIVE];
223 case BFD_RELOC_32_GOTOFF:
5236c819 224 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS
225 case BFD_RELOC_390_GOTPC:
226 return &elf_howto_table[(int) R_390_GOTPC];
227 case BFD_RELOC_390_GOT16:
228 return &elf_howto_table[(int) R_390_GOT16];
229 case BFD_RELOC_16_PCREL:
230 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK
231 case BFD_RELOC_390_PC12DBL:
232 return &elf_howto_table[(int) R_390_PC12DBL];
233 case BFD_RELOC_390_PLT12DBL:
234 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS
235 case BFD_RELOC_390_PC16DBL:
236 return &elf_howto_table[(int) R_390_PC16DBL];
237 case BFD_RELOC_390_PLT16DBL:
238 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK
239 case BFD_RELOC_390_PC24DBL:
240 return &elf_howto_table[(int) R_390_PC24DBL];
241 case BFD_RELOC_390_PLT24DBL:
242 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS
243 case BFD_RELOC_390_PC32DBL:
244 return &elf_howto_table[(int) R_390_PC32DBL];
245 case BFD_RELOC_390_PLT32DBL:
246 return &elf_howto_table[(int) R_390_PLT32DBL];
247 case BFD_RELOC_390_GOTPCDBL:
248 return &elf_howto_table[(int) R_390_GOTPCDBL];
249 case BFD_RELOC_64:
250 return &elf_howto_table[(int) R_390_64];
251 case BFD_RELOC_64_PCREL:
252 return &elf_howto_table[(int) R_390_PC64];
253 case BFD_RELOC_390_GOT64:
254 return &elf_howto_table[(int) R_390_GOT64];
255 case BFD_RELOC_390_PLT64:
256 return &elf_howto_table[(int) R_390_PLT64];
257 case BFD_RELOC_390_GOTENT:
258 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS
259 case BFD_RELOC_16_GOTOFF:
260 return &elf_howto_table[(int) R_390_GOTOFF16];
261 case BFD_RELOC_390_GOTOFF64:
262 return &elf_howto_table[(int) R_390_GOTOFF64];
263 case BFD_RELOC_390_GOTPLT12:
264 return &elf_howto_table[(int) R_390_GOTPLT12];
265 case BFD_RELOC_390_GOTPLT16:
266 return &elf_howto_table[(int) R_390_GOTPLT16];
267 case BFD_RELOC_390_GOTPLT32:
268 return &elf_howto_table[(int) R_390_GOTPLT32];
269 case BFD_RELOC_390_GOTPLT64:
270 return &elf_howto_table[(int) R_390_GOTPLT64];
271 case BFD_RELOC_390_GOTPLTENT:
272 return &elf_howto_table[(int) R_390_GOTPLTENT];
273 case BFD_RELOC_390_PLTOFF16:
274 return &elf_howto_table[(int) R_390_PLTOFF16];
275 case BFD_RELOC_390_PLTOFF32:
276 return &elf_howto_table[(int) R_390_PLTOFF32];
277 case BFD_RELOC_390_PLTOFF64:
278 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS
279 case BFD_RELOC_390_TLS_LOAD:
280 return &elf_howto_table[(int) R_390_TLS_LOAD];
281 case BFD_RELOC_390_TLS_GDCALL:
282 return &elf_howto_table[(int) R_390_TLS_GDCALL];
283 case BFD_RELOC_390_TLS_LDCALL:
284 return &elf_howto_table[(int) R_390_TLS_LDCALL];
285 case BFD_RELOC_390_TLS_GD64:
286 return &elf_howto_table[(int) R_390_TLS_GD64];
287 case BFD_RELOC_390_TLS_GOTIE12:
288 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
289 case BFD_RELOC_390_TLS_GOTIE64:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
291 case BFD_RELOC_390_TLS_LDM64:
292 return &elf_howto_table[(int) R_390_TLS_LDM64];
293 case BFD_RELOC_390_TLS_IE64:
294 return &elf_howto_table[(int) R_390_TLS_IE64];
295 case BFD_RELOC_390_TLS_IEENT:
296 return &elf_howto_table[(int) R_390_TLS_IEENT];
297 case BFD_RELOC_390_TLS_LE64:
298 return &elf_howto_table[(int) R_390_TLS_LE64];
299 case BFD_RELOC_390_TLS_LDO64:
300 return &elf_howto_table[(int) R_390_TLS_LDO64];
301 case BFD_RELOC_390_TLS_DTPMOD:
302 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
303 case BFD_RELOC_390_TLS_DTPOFF:
304 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
305 case BFD_RELOC_390_TLS_TPOFF:
306 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS
307 case BFD_RELOC_390_20:
308 return &elf_howto_table[(int) R_390_20];
309 case BFD_RELOC_390_GOT20:
310 return &elf_howto_table[(int) R_390_GOT20];
311 case BFD_RELOC_390_GOTPLT20:
312 return &elf_howto_table[(int) R_390_GOTPLT20];
313 case BFD_RELOC_390_TLS_GOTIE20:
314 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK
315 case BFD_RELOC_390_IRELATIVE:
316 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS
317 case BFD_RELOC_VTABLE_INHERIT:
318 return &elf64_s390_vtinherit_howto;
319 case BFD_RELOC_VTABLE_ENTRY:
320 return &elf64_s390_vtentry_howto;
0451c93c
MS
321 default:
322 break;
323 }
a85d7ed0
NC
324 return 0;
325}
326
157090f7
AM
327static reloc_howto_type *
328elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
329 const char *r_name)
330{
331 unsigned int i;
332
333 for (i = 0;
334 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
335 i++)
336 if (elf_howto_table[i].name != NULL
337 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
338 return &elf_howto_table[i];
339
340 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
341 return &elf64_s390_vtinherit_howto;
342 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
343 return &elf64_s390_vtentry_howto;
344
345 return NULL;
346}
347
a85d7ed0
NC
348/* We need to use ELF64_R_TYPE so we have our own copy of this function,
349 and elf64-s390.c has its own copy. */
350
351static void
2c3fc389
NC
352elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
353 arelent *cache_ptr,
354 Elf_Internal_Rela *dst)
a85d7ed0 355{
d0fb9a8d
JJ
356 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
357 switch (r_type)
a85d7ed0
NC
358 {
359 case R_390_GNU_VTINHERIT:
360 cache_ptr->howto = &elf64_s390_vtinherit_howto;
361 break;
362
363 case R_390_GNU_VTENTRY:
364 cache_ptr->howto = &elf64_s390_vtentry_howto;
365 break;
366
367 default:
d0fb9a8d
JJ
368 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
369 {
370 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
371 abfd, (int) r_type);
372 r_type = R_390_NONE;
373 }
374 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 375 }
a85d7ed0
NC
376}
377
69fc87f1
MS
378/* A relocation function which doesn't do anything. */
379static bfd_reloc_status_type
2c3fc389
NC
380s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
381 arelent *reloc_entry,
382 asymbol *symbol ATTRIBUTE_UNUSED,
383 void * data ATTRIBUTE_UNUSED,
384 asection *input_section,
385 bfd *output_bfd,
386 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS
387{
388 if (output_bfd)
389 reloc_entry->address += input_section->output_offset;
390 return bfd_reloc_ok;
391}
392
bd1ea41b
MS
393/* Handle the large displacement relocs. */
394static bfd_reloc_status_type
2c3fc389
NC
395s390_elf_ldisp_reloc (bfd *abfd,
396 arelent *reloc_entry,
397 asymbol *symbol,
398 void * data,
399 asection *input_section,
400 bfd *output_bfd,
401 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS
402{
403 reloc_howto_type *howto = reloc_entry->howto;
404 bfd_vma relocation;
405 bfd_vma insn;
406
407 if (output_bfd != (bfd *) NULL
408 && (symbol->flags & BSF_SECTION_SYM) == 0
409 && (! howto->partial_inplace
410 || reloc_entry->addend == 0))
411 {
412 reloc_entry->address += input_section->output_offset;
413 return bfd_reloc_ok;
414 }
415 if (output_bfd != NULL)
416 return bfd_reloc_continue;
417
07515404 418 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS
419 return bfd_reloc_outofrange;
420
421 relocation = (symbol->value
422 + symbol->section->output_section->vma
423 + symbol->section->output_offset);
424 relocation += reloc_entry->addend;
425 if (howto->pc_relative)
426 {
427 relocation -= (input_section->output_section->vma
428 + input_section->output_offset);
429 relocation -= reloc_entry->address;
430 }
431
68ffbac6 432 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS
433 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
434 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
435
436 if ((bfd_signed_vma) relocation < - 0x80000
437 || (bfd_signed_vma) relocation > 0x7ffff)
438 return bfd_reloc_overflow;
439 else
440 return bfd_reloc_ok;
441}
442
b34976b6 443static bfd_boolean
2c3fc389 444elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC
445{
446 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 447 return TRUE;
a85d7ed0
NC
448
449 return _bfd_elf_is_local_label_name (abfd, name);
450}
451
452/* Functions for the 390 ELF linker. */
453
454/* The name of the dynamic interpreter. This is put in the .interp
455 section. */
456
87049b0d 457#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 458
64285810
MS
459/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
460 copying dynamic variables from a shared lib into an app's dynbss
461 section, and instead use a dynamic relocation to point into the
462 shared lib. */
463#define ELIMINATE_COPY_RELOCS 1
464
a85d7ed0
NC
465/* The size in bytes of the first entry in the procedure linkage table. */
466#define PLT_FIRST_ENTRY_SIZE 32
467/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 468#define PLT_ENTRY_SIZE 32
a85d7ed0
NC
469
470#define GOT_ENTRY_SIZE 8
471
470b557a
AK
472#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
473
a85d7ed0
NC
474/* The first three entries in a procedure linkage table are reserved,
475 and the initial contents are unimportant (we zero them out).
476 Subsequent entries look like this. See the SVR4 ABI 386
477 supplement to see how this works. */
478
479/* For the s390, simple addr offset can only be 0 - 4096.
480 To use the full 16777216 TB address space, several instructions
481 are needed to load an address in a register and execute
482 a branch( or just saving the address)
483
99c79b2e 484 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC
485
486/* The first 3 words in the GOT are then reserved.
487 Word 0 is the address of the dynamic table.
488 Word 1 is a pointer to a structure describing the object
489 Word 2 is used to point to the loader entry address.
490
491 The code for PLT entries looks like this:
492
493 The GOT holds the address in the PLT to be executed.
494 The loader then gets:
495 24(15) = Pointer to the structure describing the object.
99c79b2e 496 28(15) = Offset in symbol table
a85d7ed0
NC
497 The loader must then find the module where the function is
498 and insert the address in the GOT.
499
500 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
501 LG 1,0(1) # 6 bytes Load address from GOT in r1
502 BCR 15,1 # 2 bytes Jump to address
503 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
504 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
505 BRCL 15,-x # 6 bytes Jump to start of PLT
a7e28bbe 506 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC
507
508 Total = 32 bytes per PLT entry
509 Fixup at offset 2: relative address to GOT entry
510 Fixup at offset 22: relative branch to PLT0
a7e28bbe 511 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 512
a7e28bbe
AK
513 A 32 bit offset into the symbol table is enough. It allows for
514 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
515 object (the main program, any shared library) is limited to 4GB in
516 size. Having a .rela.plt of 2GB would already make the .plt
517 section bigger than 8GB. */
a85d7ed0 518
9aa17453
AK
519static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
520 {
521 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
522 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
523 0x07, 0xf1, /* br %r1 */
524 0x0d, 0x10, /* basr %r1,%r0 */
525 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
526 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
527 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
528 };
a85d7ed0
NC
529
530/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK
531 from R1 onto the stack at 56(15) and the loader object info
532 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC
533
534/* The first entry in the PLT:
535
536 PLT0:
537 STG 1,56(15) # r1 contains the offset into the symbol table
538 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
539 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
540 LG 1,16(1) # get entry address of loader
541 BCR 15,1 # jump to loader
542
543 Fixup at offset 8: relative address to start of GOT. */
544
9aa17453
AK
545static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
546 {
547 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
548 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
549 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
550 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
551 0x07, 0xf1, /* br %r1 */
552 0x07, 0x00, /* nopr %r0 */
553 0x07, 0x00, /* nopr %r0 */
554 0x07, 0x00 /* nopr %r0 */
555 };
a85d7ed0 556
a85d7ed0
NC
557
558/* s390 ELF linker hash entry. */
559
560struct elf_s390_link_hash_entry
561{
0451c93c 562 struct elf_link_hash_entry elf;
a85d7ed0 563
0451c93c 564 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 565 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS
566
567 /* Number of GOTPLT references for a function. */
568 bfd_signed_vma gotplt_refcount;
69fc87f1
MS
569
570#define GOT_UNKNOWN 0
571#define GOT_NORMAL 1
572#define GOT_TLS_GD 2
573#define GOT_TLS_IE 3
574#define GOT_TLS_IE_NLT 3
575 unsigned char tls_type;
470b557a
AK
576
577 /* For pointer equality reasons we might need to change the symbol
578 type from STT_GNU_IFUNC to STT_FUNC together with its value and
579 section entry. So after alloc_dynrelocs only these values should
580 be used. In order to check whether a symbol is IFUNC use
581 s390_is_ifunc_symbol_p. */
582 bfd_vma ifunc_resolver_address;
583 asection *ifunc_resolver_section;
a85d7ed0
NC
584};
585
69fc87f1
MS
586#define elf_s390_hash_entry(ent) \
587 ((struct elf_s390_link_hash_entry *)(ent))
588
470b557a
AK
589/* This structure represents an entry in the local PLT list needed for
590 local IFUNC symbols. */
591struct plt_entry
592{
593 /* The section of the local symbol.
594 Set in relocate_section and used in finish_dynamic_sections. */
595 asection *sec;
596
597 union
598 {
599 bfd_signed_vma refcount;
600 bfd_vma offset;
601 } plt;
602};
603
0ffa91dd
NC
604/* NOTE: Keep this structure in sync with
605 the one declared in elf32-s390.c. */
69fc87f1
MS
606struct elf_s390_obj_tdata
607{
608 struct elf_obj_tdata root;
609
470b557a
AK
610 /* A local PLT is needed for ifunc symbols. */
611 struct plt_entry *local_plt;
612
0ffa91dd 613 /* TLS type for each local got entry. */
69fc87f1
MS
614 char *local_got_tls_type;
615};
616
617#define elf_s390_tdata(abfd) \
618 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
619
470b557a
AK
620#define elf_s390_local_plt(abfd) \
621 (elf_s390_tdata (abfd)->local_plt)
622
69fc87f1
MS
623#define elf_s390_local_got_tls_type(abfd) \
624 (elf_s390_tdata (abfd)->local_got_tls_type)
625
0ffa91dd
NC
626#define is_s390_elf(bfd) \
627 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
628 && elf_tdata (bfd) != NULL \
4dfe6ac6 629 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 630
69fc87f1 631static bfd_boolean
62d7a5f6 632elf_s390_mkobject (bfd *abfd)
69fc87f1 633{
0ffa91dd 634 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 635 S390_ELF_DATA);
69fc87f1
MS
636}
637
638static bfd_boolean
2c3fc389 639elf_s390_object_p (bfd *abfd)
69fc87f1 640{
69fc87f1
MS
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
a85d7ed0
NC
645/* s390 ELF linker hash table. */
646
647struct elf_s390_link_hash_table
648{
0451c93c 649 struct elf_link_hash_table elf;
a85d7ed0 650
0451c93c 651 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS
652 asection *sdynbss;
653 asection *srelbss;
470b557a 654 asection *irelifunc;
ec338859 655
69fc87f1
MS
656 union {
657 bfd_signed_vma refcount;
658 bfd_vma offset;
659 } tls_ldm_got;
660
87d72d41
AM
661 /* Small local sym cache. */
662 struct sym_cache sym_cache;
0451c93c 663};
a85d7ed0
NC
664
665/* Get the s390 ELF linker hash table from a link_info structure. */
666
667#define elf_s390_hash_table(p) \
4dfe6ac6
NC
668 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
669 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 670
470b557a
AK
671#define ELF64 1
672#include "elf-s390-common.c"
673
a85d7ed0
NC
674/* Create an entry in an s390 ELF linker hash table. */
675
676static struct bfd_hash_entry *
2c3fc389
NC
677link_hash_newfunc (struct bfd_hash_entry *entry,
678 struct bfd_hash_table *table,
679 const char *string)
a85d7ed0 680{
a85d7ed0
NC
681 /* Allocate the structure if it has not already been allocated by a
682 subclass. */
0451c93c
MS
683 if (entry == NULL)
684 {
685 entry = bfd_hash_allocate (table,
686 sizeof (struct elf_s390_link_hash_entry));
687 if (entry == NULL)
688 return entry;
689 }
a85d7ed0
NC
690
691 /* Call the allocation method of the superclass. */
0451c93c
MS
692 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
693 if (entry != NULL)
a85d7ed0 694 {
0451c93c
MS
695 struct elf_s390_link_hash_entry *eh;
696
697 eh = (struct elf_s390_link_hash_entry *) entry;
698 eh->dyn_relocs = NULL;
5236c819 699 eh->gotplt_refcount = 0;
69fc87f1 700 eh->tls_type = GOT_UNKNOWN;
470b557a
AK
701 eh->ifunc_resolver_address = 0;
702 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC
703 }
704
0451c93c 705 return entry;
a85d7ed0
NC
706}
707
708/* Create an s390 ELF linker hash table. */
709
710static struct bfd_link_hash_table *
2c3fc389 711elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC
712{
713 struct elf_s390_link_hash_table *ret;
dc810e39 714 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 715
7bf52ea2 716 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 717 if (ret == NULL)
a85d7ed0
NC
718 return NULL;
719
66eb6687 720 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC
721 sizeof (struct elf_s390_link_hash_entry),
722 S390_ELF_DATA))
a85d7ed0 723 {
e2d34d7d 724 free (ret);
a85d7ed0
NC
725 return NULL;
726 }
727
0451c93c
MS
728 return &ret->elf.root;
729}
730
731/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
732 shortcuts to them in our hash table. */
733
b34976b6 734static bfd_boolean
4dfe6ac6
NC
735create_got_section (bfd *dynobj,
736 struct bfd_link_info *info)
0451c93c
MS
737{
738 struct elf_s390_link_hash_table *htab;
739
740 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 741 return FALSE;
0451c93c
MS
742
743 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
744 if (htab == NULL)
745 return FALSE;
746
3d4d4302
AM
747 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
748 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
749 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 750 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c 751 abort ();
b34976b6 752 return TRUE;
0451c93c
MS
753}
754
755/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
756 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
757 hash table. */
758
b34976b6 759static bfd_boolean
4dfe6ac6
NC
760elf_s390_create_dynamic_sections (bfd *dynobj,
761 struct bfd_link_info *info)
0451c93c
MS
762{
763 struct elf_s390_link_hash_table *htab;
764
765 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
766 if (htab == NULL)
767 return FALSE;
768
f41345a7 769 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 770 return FALSE;
0451c93c
MS
771
772 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 773 return FALSE;
0451c93c 774
3d4d4302
AM
775 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
776 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
777 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 778 if (!bfd_link_pic (info))
3d4d4302 779 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 780
f41345a7 781 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0e1862bb 782 || (!bfd_link_pic (info) && !htab->srelbss))
0451c93c
MS
783 abort ();
784
b34976b6 785 return TRUE;
a85d7ed0
NC
786}
787
0451c93c
MS
788/* Copy the extra info we tack onto an elf_link_hash_entry. */
789
790static void
2c3fc389
NC
791elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
792 struct elf_link_hash_entry *dir,
793 struct elf_link_hash_entry *ind)
0451c93c
MS
794{
795 struct elf_s390_link_hash_entry *edir, *eind;
796
797 edir = (struct elf_s390_link_hash_entry *) dir;
798 eind = (struct elf_s390_link_hash_entry *) ind;
799
800 if (eind->dyn_relocs != NULL)
801 {
802 if (edir->dyn_relocs != NULL)
803 {
00d8c7a9
AK
804 struct elf_dyn_relocs **pp;
805 struct elf_dyn_relocs *p;
0451c93c 806
fcfa13d2 807 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS
808 list. Merge any entries against the same section. */
809 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
810 {
00d8c7a9 811 struct elf_dyn_relocs *q;
0451c93c
MS
812
813 for (q = edir->dyn_relocs; q != NULL; q = q->next)
814 if (q->sec == p->sec)
815 {
816 q->pc_count += p->pc_count;
817 q->count += p->count;
818 *pp = p->next;
819 break;
820 }
821 if (q == NULL)
822 pp = &p->next;
823 }
824 *pp = edir->dyn_relocs;
825 }
826
827 edir->dyn_relocs = eind->dyn_relocs;
828 eind->dyn_relocs = NULL;
829 }
830
69fc87f1
MS
831 if (ind->root.type == bfd_link_hash_indirect
832 && dir->got.refcount <= 0)
833 {
834 edir->tls_type = eind->tls_type;
835 eind->tls_type = GOT_UNKNOWN;
836 }
837
64285810
MS
838 if (ELIMINATE_COPY_RELOCS
839 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM
840 && dir->dynamic_adjusted)
841 {
842 /* If called to transfer flags for a weakdef during processing
843 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
844 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
845 dir->ref_dynamic |= ind->ref_dynamic;
846 dir->ref_regular |= ind->ref_regular;
847 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
848 dir->needs_plt |= ind->needs_plt;
849 }
64285810 850 else
fcfa13d2 851 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 852}
a85d7ed0 853
69fc87f1 854static int
2c3fc389
NC
855elf_s390_tls_transition (struct bfd_link_info *info,
856 int r_type,
857 int is_local)
69fc87f1 858{
0e1862bb 859 if (bfd_link_pic (info))
69fc87f1
MS
860 return r_type;
861
862 switch (r_type)
863 {
864 case R_390_TLS_GD64:
865 case R_390_TLS_IE64:
866 if (is_local)
867 return R_390_TLS_LE64;
868 return R_390_TLS_IE64;
869 case R_390_TLS_GOTIE64:
870 if (is_local)
871 return R_390_TLS_LE64;
872 return R_390_TLS_GOTIE64;
873 case R_390_TLS_LDM64:
874 return R_390_TLS_LE64;
875 }
876
877 return r_type;
878}
879
a85d7ed0
NC
880/* Look through the relocs for a section during the first phase, and
881 allocate space in the global offset table or procedure linkage
882 table. */
883
b34976b6 884static bfd_boolean
4dfe6ac6
NC
885elf_s390_check_relocs (bfd *abfd,
886 struct bfd_link_info *info,
887 asection *sec,
888 const Elf_Internal_Rela *relocs)
a85d7ed0 889{
0451c93c 890 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
891 Elf_Internal_Shdr *symtab_hdr;
892 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC
893 const Elf_Internal_Rela *rel;
894 const Elf_Internal_Rela *rel_end;
a85d7ed0 895 asection *sreloc;
5236c819 896 bfd_signed_vma *local_got_refcounts;
69fc87f1 897 int tls_type, old_tls_type;
a85d7ed0 898
0e1862bb 899 if (bfd_link_relocatable (info))
b34976b6 900 return TRUE;
a85d7ed0 901
0ffa91dd
NC
902 BFD_ASSERT (is_s390_elf (abfd));
903
0451c93c 904 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
905 if (htab == NULL)
906 return FALSE;
907
0ffa91dd 908 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 909 sym_hashes = elf_sym_hashes (abfd);
5236c819 910 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 911
a85d7ed0
NC
912 sreloc = NULL;
913
914 rel_end = relocs + sec->reloc_count;
915 for (rel = relocs; rel < rel_end; rel++)
916 {
69fc87f1 917 unsigned int r_type;
a85d7ed0
NC
918 unsigned long r_symndx;
919 struct elf_link_hash_entry *h;
470b557a 920 Elf_Internal_Sym *isym;
a85d7ed0
NC
921
922 r_symndx = ELF64_R_SYM (rel->r_info);
923
0451c93c
MS
924 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
925 {
d003868e
AM
926 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
927 abfd,
0451c93c 928 r_symndx);
b34976b6 929 return FALSE;
0451c93c
MS
930 }
931
a85d7ed0 932 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK
933 {
934 /* A local symbol. */
935 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
936 abfd, r_symndx);
937 if (isym == NULL)
938 return FALSE;
939
940 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
941 {
942 struct plt_entry *plt;
943
0cb79d69
AK
944 if (htab->elf.dynobj == NULL)
945 htab->elf.dynobj = abfd;
946
470b557a
AK
947 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
948 return FALSE;
949
950 if (local_got_refcounts == NULL)
951 {
952 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
953 return FALSE;
954 local_got_refcounts = elf_local_got_refcounts (abfd);
955 }
956 plt = elf_s390_local_plt (abfd);
957 plt[r_symndx].plt.refcount++;
958 }
959 h = NULL;
960 }
a85d7ed0 961 else
973a3492
L
962 {
963 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
964 while (h->root.type == bfd_link_hash_indirect
965 || h->root.type == bfd_link_hash_warning)
966 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
967
968 /* PR15323, ref flags aren't set for references in the same
969 object. */
970 h->root.non_ir_ref = 1;
973a3492 971 }
a85d7ed0 972
5236c819
MS
973 /* Create got section and local_got_refcounts array if they
974 are needed. */
69fc87f1
MS
975 r_type = elf_s390_tls_transition (info,
976 ELF64_R_TYPE (rel->r_info),
977 h == NULL);
978 switch (r_type)
a85d7ed0
NC
979 {
980 case R_390_GOT12:
947216bf 981 case R_390_GOT16:
bd1ea41b 982 case R_390_GOT20:
a85d7ed0
NC
983 case R_390_GOT32:
984 case R_390_GOT64:
985 case R_390_GOTENT:
5236c819
MS
986 case R_390_GOTPLT12:
987 case R_390_GOTPLT16:
bd1ea41b 988 case R_390_GOTPLT20:
5236c819
MS
989 case R_390_GOTPLT32:
990 case R_390_GOTPLT64:
991 case R_390_GOTPLTENT:
69fc87f1
MS
992 case R_390_TLS_GD64:
993 case R_390_TLS_GOTIE12:
bd1ea41b 994 case R_390_TLS_GOTIE20:
69fc87f1
MS
995 case R_390_TLS_GOTIE64:
996 case R_390_TLS_IEENT:
997 case R_390_TLS_IE64:
998 case R_390_TLS_LDM64:
5236c819
MS
999 if (h == NULL
1000 && local_got_refcounts == NULL)
a85d7ed0 1001 {
470b557a 1002 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1003 return FALSE;
470b557a 1004 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1005 }
470b557a 1006
5236c819
MS
1007 /* Fall through. */
1008 case R_390_GOTOFF16:
1009 case R_390_GOTOFF32:
1010 case R_390_GOTOFF64:
0451c93c
MS
1011 case R_390_GOTPC:
1012 case R_390_GOTPCDBL:
f41345a7 1013 if (htab->elf.sgot == NULL)
0451c93c
MS
1014 {
1015 if (htab->elf.dynobj == NULL)
1016 htab->elf.dynobj = abfd;
1017 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1018 return FALSE;
0451c93c 1019 }
5236c819
MS
1020 }
1021
470b557a
AK
1022 if (h != NULL)
1023 {
1024 if (htab->elf.dynobj == NULL)
1025 htab->elf.dynobj = abfd;
1026 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1027 return FALSE;
1028
1029 /* Make sure an IFUNC symbol defined in a non-shared object
1030 always gets a PLT slot. */
1031 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1032 {
1033 /* The symbol is called by the dynamic loader in order
1034 to resolve the relocation. So it is in fact also
1035 referenced. */
1036 h->ref_regular = 1;
1037 h->needs_plt = 1;
1038 }
1039 }
1040
69fc87f1 1041 switch (r_type)
5236c819 1042 {
5236c819
MS
1043 case R_390_GOTOFF16:
1044 case R_390_GOTOFF32:
1045 case R_390_GOTOFF64:
1046 case R_390_GOTPC:
1047 case R_390_GOTPCDBL:
470b557a
AK
1048 /* These relocs do not need a GOT slot. They just load the
1049 GOT pointer itself or address something else relative to
1050 the GOT. Since the GOT pointer has been set up above we
1051 are done. */
0451c93c 1052 break;
ec338859 1053
fb798c50 1054 case R_390_PLT12DBL:
947216bf 1055 case R_390_PLT16DBL:
fb798c50 1056 case R_390_PLT24DBL:
a85d7ed0
NC
1057 case R_390_PLT32:
1058 case R_390_PLT32DBL:
1059 case R_390_PLT64:
5236c819
MS
1060 case R_390_PLTOFF16:
1061 case R_390_PLTOFF32:
1062 case R_390_PLTOFF64:
a85d7ed0 1063 /* This symbol requires a procedure linkage table entry. We
947216bf
AM
1064 actually build the entry in adjust_dynamic_symbol,
1065 because this might be a case of linking PIC code which is
1066 never referenced by a dynamic object, in which case we
1067 don't need to generate a procedure linkage table entry
1068 after all. */
ec338859 1069
a85d7ed0 1070 /* If this is a local symbol, we resolve it directly without
947216bf 1071 creating a procedure linkage table entry. */
5236c819
MS
1072 if (h != NULL)
1073 {
f5385ebf 1074 h->needs_plt = 1;
5236c819
MS
1075 h->plt.refcount += 1;
1076 }
1077 break;
ec338859 1078
5236c819
MS
1079 case R_390_GOTPLT12:
1080 case R_390_GOTPLT16:
bd1ea41b 1081 case R_390_GOTPLT20:
5236c819
MS
1082 case R_390_GOTPLT32:
1083 case R_390_GOTPLT64:
1084 case R_390_GOTPLTENT:
1085 /* This symbol requires either a procedure linkage table entry
1086 or an entry in the local got. We actually build the entry
1087 in adjust_dynamic_symbol because whether this is really a
1088 global reference can change and with it the fact if we have
1089 to create a plt entry or a local got entry. To be able to
1090 make a once global symbol a local one we have to keep track
1091 of the number of gotplt references that exist for this
1092 symbol. */
1093 if (h != NULL)
1094 {
1095 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1096 h->needs_plt = 1;
5236c819
MS
1097 h->plt.refcount += 1;
1098 }
69fc87f1
MS
1099 else
1100 local_got_refcounts[r_symndx] += 1;
1101 break;
1102
1103 case R_390_TLS_LDM64:
1104 htab->tls_ldm_got.refcount += 1;
1105 break;
1106
1107 case R_390_TLS_IE64:
1108 case R_390_TLS_GOTIE12:
bd1ea41b 1109 case R_390_TLS_GOTIE20:
69fc87f1
MS
1110 case R_390_TLS_GOTIE64:
1111 case R_390_TLS_IEENT:
0e1862bb 1112 if (bfd_link_pic (info))
69fc87f1
MS
1113 info->flags |= DF_STATIC_TLS;
1114 /* Fall through */
1115
1116 case R_390_GOT12:
26e41594 1117 case R_390_GOT16:
bd1ea41b 1118 case R_390_GOT20:
69fc87f1
MS
1119 case R_390_GOT32:
1120 case R_390_GOT64:
1121 case R_390_GOTENT:
1122 case R_390_TLS_GD64:
1123 /* This symbol requires a global offset table entry. */
1124 switch (r_type)
1125 {
1126 default:
1127 case R_390_GOT12:
1128 case R_390_GOT16:
bd1ea41b 1129 case R_390_GOT20:
69fc87f1
MS
1130 case R_390_GOT32:
1131 case R_390_GOTENT:
1132 tls_type = GOT_NORMAL;
1133 break;
1134 case R_390_TLS_GD64:
1135 tls_type = GOT_TLS_GD;
1136 break;
1137 case R_390_TLS_IE64:
1138 case R_390_TLS_GOTIE64:
1139 tls_type = GOT_TLS_IE;
1140 break;
1141 case R_390_TLS_GOTIE12:
bd1ea41b 1142 case R_390_TLS_GOTIE20:
69fc87f1
MS
1143 case R_390_TLS_IEENT:
1144 tls_type = GOT_TLS_IE_NLT;
1145 break;
1146 }
1147
1148 if (h != NULL)
1149 {
1150 h->got.refcount += 1;
1151 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1152 }
5236c819
MS
1153 else
1154 {
1155 local_got_refcounts[r_symndx] += 1;
69fc87f1 1156 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1157 }
69fc87f1
MS
1158 /* If a TLS symbol is accessed using IE at least once,
1159 there is no point to use dynamic model for it. */
1160 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1161 {
1162 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1163 {
1164 (*_bfd_error_handler)
d003868e
AM
1165 (_("%B: `%s' accessed both as normal and thread local symbol"),
1166 abfd, h->root.root.string);
69fc87f1
MS
1167 return FALSE;
1168 }
1169 if (old_tls_type > tls_type)
1170 tls_type = old_tls_type;
1171 }
1172
1173 if (old_tls_type != tls_type)
1174 {
1175 if (h != NULL)
1176 elf_s390_hash_entry (h)->tls_type = tls_type;
1177 else
1178 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1179 }
1180
1181 if (r_type != R_390_TLS_IE64)
1182 break;
1183 /* Fall through */
1184
1185 case R_390_TLS_LE64:
e00d879a
AK
1186 /* For static linking and executables this reloc will be
1187 calculated at linktime otherwise a TLS_TPOFF runtime
1188 reloc will be generated. */
0e1862bb 1189 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK
1190 break;
1191
0e1862bb 1192 if (!bfd_link_pic (info))
69fc87f1
MS
1193 break;
1194 info->flags |= DF_STATIC_TLS;
1195 /* Fall through */
ec338859 1196
947216bf
AM
1197 case R_390_8:
1198 case R_390_16:
a85d7ed0
NC
1199 case R_390_32:
1200 case R_390_64:
fb798c50 1201 case R_390_PC12DBL:
947216bf
AM
1202 case R_390_PC16:
1203 case R_390_PC16DBL:
fb798c50 1204 case R_390_PC24DBL:
a85d7ed0
NC
1205 case R_390_PC32:
1206 case R_390_PC32DBL:
1207 case R_390_PC64:
470b557a 1208 if (h != NULL)
0451c93c
MS
1209 {
1210 /* If this reloc is in a read-only section, we might
1211 need a copy reloc. We can't check reliably at this
1212 stage whether the section is read-only, as input
1213 sections have not yet been mapped to output sections.
1214 Tentatively set the flag for now, and correct in
1215 adjust_dynamic_symbol. */
f5385ebf 1216 h->non_got_ref = 1;
ec338859 1217
0e1862bb 1218 if (!bfd_link_pic (info))
470b557a
AK
1219 {
1220 /* We may need a .plt entry if the function this reloc
1221 refers to is in a shared lib. */
1222 h->plt.refcount += 1;
1223 }
0451c93c 1224 }
ec338859 1225
a85d7ed0 1226 /* If we are creating a shared library, and this is a reloc
0451c93c
MS
1227 against a global symbol, or a non PC relative reloc
1228 against a local symbol, then we need to copy the reloc
1229 into the shared library. However, if we are linking with
1230 -Bsymbolic, we do not need to copy a reloc against a
1231 global symbol which is defined in an object we are
1232 including in the link (i.e., DEF_REGULAR is set). At
1233 this point we have not seen all the input files, so it is
1234 possible that DEF_REGULAR is not set now but will be set
1235 later (it is never cleared). In case of a weak definition,
1236 DEF_REGULAR may be cleared later by a strong definition in
1237 a shared library. We account for that possibility below by
1238 storing information in the relocs_copied field of the hash
1239 table entry. A similar situation occurs when creating
1240 shared libraries and symbol visibility changes render the
1241 symbol local.
1242
1243 If on the other hand, we are creating an executable, we
1244 may need to keep relocations for symbols satisfied by a
1245 dynamic library if we manage to avoid copy relocs for the
1246 symbol. */
0e1862bb 1247 if ((bfd_link_pic (info)
0451c93c
MS
1248 && (sec->flags & SEC_ALLOC) != 0
1249 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1250 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1251 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1252 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS
1253 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1254 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1255 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1256 || (h != NULL
8c21ca21 1257 && (! SYMBOLIC_BIND (info, h)
0451c93c 1258 || h->root.type == bfd_link_hash_defweak
f5385ebf 1259 || !h->def_regular))))
64285810 1260 || (ELIMINATE_COPY_RELOCS
0e1862bb 1261 && !bfd_link_pic (info)
0451c93c
MS
1262 && (sec->flags & SEC_ALLOC) != 0
1263 && h != NULL
1264 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1265 || !h->def_regular)))
a85d7ed0 1266 {
00d8c7a9
AK
1267 struct elf_dyn_relocs *p;
1268 struct elf_dyn_relocs **head;
ec338859 1269
0451c93c
MS
1270 /* We must copy these reloc types into the output file.
1271 Create a reloc section in dynobj and make room for
1272 this reloc. */
a85d7ed0
NC
1273 if (sreloc == NULL)
1274 {
440e9cd2
AK
1275 if (htab->elf.dynobj == NULL)
1276 htab->elf.dynobj = abfd;
1277
83bac4b0
NC
1278 sreloc = _bfd_elf_make_dynamic_reloc_section
1279 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1280
a85d7ed0 1281 if (sreloc == NULL)
83bac4b0 1282 return FALSE;
a85d7ed0 1283 }
ec338859 1284
0451c93c
MS
1285 /* If this is a global symbol, we count the number of
1286 relocations we need for this symbol. */
1287 if (h != NULL)
a85d7ed0 1288 {
ec338859 1289 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS
1290 }
1291 else
1292 {
ec338859
AM
1293 /* Track dynamic relocs needed for local syms too.
1294 We really need local syms available to do this
1295 easily. Oh well. */
ec338859 1296 asection *s;
6edfbbad
DJ
1297 void *vpp;
1298
87d72d41
AM
1299 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1300 abfd, r_symndx);
1301 if (isym == NULL)
b34976b6 1302 return FALSE;
ec338859 1303
87d72d41
AM
1304 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1305 if (s == NULL)
1306 s = sec;
1307
6edfbbad 1308 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1309 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM
1310 }
1311
1312 p = *head;
1313 if (p == NULL || p->sec != sec)
1314 {
1315 bfd_size_type amt = sizeof *p;
00d8c7a9 1316 p = ((struct elf_dyn_relocs *)
ec338859
AM
1317 bfd_alloc (htab->elf.dynobj, amt));
1318 if (p == NULL)
b34976b6 1319 return FALSE;
ec338859
AM
1320 p->next = *head;
1321 *head = p;
1322 p->sec = sec;
1323 p->count = 0;
1324 p->pc_count = 0;
a85d7ed0 1325 }
ec338859
AM
1326
1327 p->count += 1;
1328 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK
1329 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1330 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM
1331 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1332 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1333 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1334 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1335 p->pc_count += 1;
a85d7ed0 1336 }
a85d7ed0 1337 break;
ec338859 1338
a85d7ed0
NC
1339 /* This relocation describes the C++ object vtable hierarchy.
1340 Reconstruct it for later use during GC. */
947216bf 1341 case R_390_GNU_VTINHERIT:
c152c796 1342 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1343 return FALSE;
947216bf 1344 break;
ec338859 1345
a85d7ed0
NC
1346 /* This relocation describes which C++ vtable entries are actually
1347 used. Record for later use during GC. */
947216bf 1348 case R_390_GNU_VTENTRY:
d17e0c6e
JB
1349 BFD_ASSERT (h != NULL);
1350 if (h != NULL
1351 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1352 return FALSE;
947216bf 1353 break;
ec338859 1354
a85d7ed0
NC
1355 default:
1356 break;
1357 }
1358 }
1359
b34976b6 1360 return TRUE;
a85d7ed0
NC
1361}
1362
1363/* Return the section that should be marked against GC for a given
1364 relocation. */
1365
1366static asection *
07adf181
AM
1367elf_s390_gc_mark_hook (asection *sec,
1368 struct bfd_link_info *info,
1369 Elf_Internal_Rela *rel,
1370 struct elf_link_hash_entry *h,
1371 Elf_Internal_Sym *sym)
a85d7ed0
NC
1372{
1373 if (h != NULL)
07adf181
AM
1374 switch (ELF64_R_TYPE (rel->r_info))
1375 {
1376 case R_390_GNU_VTINHERIT:
1377 case R_390_GNU_VTENTRY:
1378 return NULL;
1379 }
1380
1381 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC
1382}
1383
1384/* Update the got entry reference counts for the section being removed. */
1385
b34976b6 1386static bfd_boolean
07adf181
AM
1387elf_s390_gc_sweep_hook (bfd *abfd,
1388 struct bfd_link_info *info,
1389 asection *sec,
1390 const Elf_Internal_Rela *relocs)
a85d7ed0 1391{
4dfe6ac6 1392 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
1393 Elf_Internal_Shdr *symtab_hdr;
1394 struct elf_link_hash_entry **sym_hashes;
1395 bfd_signed_vma *local_got_refcounts;
1396 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1397
0e1862bb 1398 if (bfd_link_relocatable (info))
7dda2462
TG
1399 return TRUE;
1400
4dfe6ac6
NC
1401 htab = elf_s390_hash_table (info);
1402 if (htab == NULL)
1403 return FALSE;
1404
ec338859 1405 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1406
0ffa91dd 1407 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS
1408 sym_hashes = elf_sym_hashes (abfd);
1409 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC
1410
1411 relend = relocs + sec->reloc_count;
1412 for (rel = relocs; rel < relend; rel++)
5236c819 1413 {
26e41594
AM
1414 unsigned long r_symndx;
1415 unsigned int r_type;
1416 struct elf_link_hash_entry *h = NULL;
1417
5236c819 1418 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM
1419 if (r_symndx >= symtab_hdr->sh_info)
1420 {
1421 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK
1422 struct elf_dyn_relocs **pp;
1423 struct elf_dyn_relocs *p;
5236c819 1424
26e41594 1425 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
1426 while (h->root.type == bfd_link_hash_indirect
1427 || h->root.type == bfd_link_hash_warning)
1428 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1429 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1430
26e41594
AM
1431 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1432 if (p->sec == sec)
1433 {
1434 /* Everything must go for SEC. */
1435 *pp = p->next;
1436 break;
1437 }
1438 }
470b557a
AK
1439 else
1440 {
1441 Elf_Internal_Sym *isym;
1442
1443 /* A local symbol. */
1444 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1445 abfd, r_symndx);
1446 if (isym == NULL)
1447 return FALSE;
1448
1449 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1450 {
1451 struct plt_entry *plt = elf_s390_local_plt (abfd);
1452 if (plt[r_symndx].plt.refcount > 0)
1453 plt[r_symndx].plt.refcount--;
1454 }
1455 }
26e41594
AM
1456
1457 r_type = ELF64_R_TYPE (rel->r_info);
1458 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1459 switch (r_type)
5236c819 1460 {
69fc87f1 1461 case R_390_TLS_LDM64:
4dfe6ac6
NC
1462 if (htab->tls_ldm_got.refcount > 0)
1463 htab->tls_ldm_got.refcount -= 1;
69fc87f1 1464 break;
ef05be83
AK
1465 case R_390_GOTOFF16:
1466 case R_390_GOTOFF32:
1467 case R_390_GOTOFF64:
1468 case R_390_GOTPC:
1469 case R_390_GOTPCDBL:
1470 break;
69fc87f1
MS
1471
1472 case R_390_TLS_GD64:
1473 case R_390_TLS_IE64:
1474 case R_390_TLS_GOTIE12:
bd1ea41b 1475 case R_390_TLS_GOTIE20:
69fc87f1
MS
1476 case R_390_TLS_GOTIE64:
1477 case R_390_TLS_IEENT:
5236c819
MS
1478 case R_390_GOT12:
1479 case R_390_GOT16:
bd1ea41b 1480 case R_390_GOT20:
5236c819
MS
1481 case R_390_GOT32:
1482 case R_390_GOT64:
5236c819
MS
1483 case R_390_GOTENT:
1484 if (h != NULL)
1485 {
1486 if (h->got.refcount > 0)
1487 h->got.refcount -= 1;
1488 }
1489 else if (local_got_refcounts != NULL)
1490 {
1491 if (local_got_refcounts[r_symndx] > 0)
1492 local_got_refcounts[r_symndx] -= 1;
1493 }
26e41594 1494 break;
a85d7ed0 1495
5236c819
MS
1496 case R_390_8:
1497 case R_390_12:
1498 case R_390_16:
bd1ea41b 1499 case R_390_20:
5236c819
MS
1500 case R_390_32:
1501 case R_390_64:
1502 case R_390_PC16:
fb798c50 1503 case R_390_PC12DBL:
5236c819 1504 case R_390_PC16DBL:
fb798c50 1505 case R_390_PC24DBL:
5236c819
MS
1506 case R_390_PC32:
1507 case R_390_PC32DBL:
1508 case R_390_PC64:
0e1862bb 1509 if (bfd_link_pic (info))
26e41594
AM
1510 break;
1511 /* Fall through */
a85d7ed0 1512
fb798c50 1513 case R_390_PLT12DBL:
69fc87f1 1514 case R_390_PLT16DBL:
fb798c50 1515 case R_390_PLT24DBL:
69fc87f1
MS
1516 case R_390_PLT32:
1517 case R_390_PLT32DBL:
1518 case R_390_PLT64:
1519 case R_390_PLTOFF16:
1520 case R_390_PLTOFF32:
1521 case R_390_PLTOFF64:
1522 if (h != NULL)
1523 {
1524 if (h->plt.refcount > 0)
1525 h->plt.refcount -= 1;
1526 }
1527 break;
1528
1529 case R_390_GOTPLT12:
1530 case R_390_GOTPLT16:
bd1ea41b 1531 case R_390_GOTPLT20:
69fc87f1
MS
1532 case R_390_GOTPLT32:
1533 case R_390_GOTPLT64:
1534 case R_390_GOTPLTENT:
1535 if (h != NULL)
1536 {
1537 if (h->plt.refcount > 0)
1538 {
1539 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1540 h->plt.refcount -= 1;
1541 }
1542 }
1543 else if (local_got_refcounts != NULL)
1544 {
1545 if (local_got_refcounts[r_symndx] > 0)
1546 local_got_refcounts[r_symndx] -= 1;
1547 }
1548 break;
1549
5236c819
MS
1550 default:
1551 break;
1552 }
1553 }
a85d7ed0 1554
b34976b6 1555 return TRUE;
a85d7ed0
NC
1556}
1557
5236c819
MS
1558/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1559 entry but we found we will not create any. Called when we find we will
1560 not have any PLT for this symbol, by for example
1561 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1562 or elf_s390_size_dynamic_sections if no dynamic sections will be
1563 created (we're only linking static objects). */
1564
1565static void
2c3fc389 1566elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS
1567{
1568 if (h->elf.root.type == bfd_link_hash_warning)
1569 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1570
1571 if (h->gotplt_refcount <= 0)
1572 return;
1573
1574 /* We simply add the number of gotplt references to the number
1575 * of got references for this symbol. */
1576 h->elf.got.refcount += h->gotplt_refcount;
1577 h->gotplt_refcount = -1;
1578}
1579
a85d7ed0
NC
1580/* Adjust a symbol defined by a dynamic object and referenced by a
1581 regular object. The current definition is in some section of the
1582 dynamic object, but we're not including those sections. We have to
1583 change the definition to something the rest of the link can
1584 understand. */
1585
b34976b6 1586static bfd_boolean
4dfe6ac6
NC
1587elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1588 struct elf_link_hash_entry *h)
a85d7ed0 1589{
0451c93c 1590 struct elf_s390_link_hash_table *htab;
a85d7ed0 1591 asection *s;
a85d7ed0 1592
470b557a
AK
1593 /* STT_GNU_IFUNC symbol must go through PLT. */
1594 if (s390_is_ifunc_symbol_p (h))
1595 return TRUE;
1596
a85d7ed0
NC
1597 /* If this is a function, put it in the procedure linkage table. We
1598 will fill in the contents of the procedure linkage table later
cedb70c5 1599 (although we could actually do it here). */
a85d7ed0 1600 if (h->type == STT_FUNC
f5385ebf 1601 || h->needs_plt)
a85d7ed0 1602 {
0451c93c 1603 if (h->plt.refcount <= 0
8c21ca21
AK
1604 || SYMBOL_CALLS_LOCAL (info, h)
1605 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1606 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC
1607 {
1608 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM
1609 file, but the symbol was never referred to by a dynamic
1610 object, or if all references were garbage collected. In
0451c93c
MS
1611 such a case, we don't actually need to build a procedure
1612 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1613 h->plt.offset = (bfd_vma) -1;
f5385ebf 1614 h->needs_plt = 0;
5236c819 1615 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC
1616 }
1617
b34976b6 1618 return TRUE;
a85d7ed0 1619 }
bbd7ec4a 1620 else
0451c93c
MS
1621 /* It's possible that we incorrectly decided a .plt reloc was
1622 needed for an R_390_PC32 reloc to a non-function sym in
1623 check_relocs. We can't decide accurately between function and
1624 non-function syms in check-relocs; Objects loaded later in
1625 the link may change h->type. So fix it now. */
bbd7ec4a 1626 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC
1627
1628 /* If this is a weak symbol, and there is a real definition, the
1629 processor independent code will have arranged for us to see the
1630 real definition first, and we can just use the same value. */
f6e332e6 1631 if (h->u.weakdef != NULL)
a85d7ed0 1632 {
f6e332e6
AM
1633 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1634 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1635 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1636 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1637 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1638 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1639 return TRUE;
a85d7ed0
NC
1640 }
1641
1642 /* This is a reference to a symbol defined by a dynamic object which
1643 is not a function. */
1644
1645 /* If we are creating a shared library, we must presume that the
1646 only references to the symbol are via the global offset table.
1647 For such cases we need not do anything here; the relocations will
1648 be handled correctly by relocate_section. */
0e1862bb 1649 if (bfd_link_pic (info))
b34976b6 1650 return TRUE;
a85d7ed0
NC
1651
1652 /* If there are no references to this symbol that do not use the
1653 GOT, we don't need to generate a copy reloc. */
f5385ebf 1654 if (!h->non_got_ref)
b34976b6 1655 return TRUE;
a85d7ed0 1656
0451c93c
MS
1657 /* If -z nocopyreloc was given, we won't generate them either. */
1658 if (info->nocopyreloc)
1659 {
f5385ebf 1660 h->non_got_ref = 0;
b34976b6 1661 return TRUE;
0451c93c
MS
1662 }
1663
64285810 1664 if (ELIMINATE_COPY_RELOCS)
0451c93c 1665 {
64285810 1666 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1667 struct elf_dyn_relocs *p;
0451c93c 1668
64285810
MS
1669 eh = (struct elf_s390_link_hash_entry *) h;
1670 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1671 {
1672 s = p->sec->output_section;
1673 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1674 break;
1675 }
1676
1677 /* If we didn't find any dynamic relocs in read-only sections, then
1678 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1679 if (p == NULL)
1680 {
f5385ebf 1681 h->non_got_ref = 0;
64285810
MS
1682 return TRUE;
1683 }
0451c93c
MS
1684 }
1685
a85d7ed0
NC
1686 /* We must allocate the symbol in our .dynbss section, which will
1687 become part of the .bss section of the executable. There will be
1688 an entry for this symbol in the .dynsym section. The dynamic
1689 object will contain position independent code, so all references
1690 from the dynamic object to this symbol will go through the global
1691 offset table. The dynamic linker will use the .dynsym entry to
1692 determine the address it must put in the global offset table, so
1693 both the dynamic object and the regular object will refer to the
1694 same memory location for the variable. */
1695
0451c93c 1696 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
1697 if (htab == NULL)
1698 return FALSE;
a85d7ed0 1699
0451c93c
MS
1700 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1701 copy the initial value out of the dynamic object and into the
1702 runtime process image. */
1d7e9d18 1703 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1704 {
eea6121a 1705 htab->srelbss->size += sizeof (Elf64_External_Rela);
f5385ebf 1706 h->needs_copy = 1;
a85d7ed0
NC
1707 }
1708
0451c93c 1709 s = htab->sdynbss;
a85d7ed0 1710
6cabe1ea 1711 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC
1712}
1713
0451c93c
MS
1714/* Allocate space in .plt, .got and associated reloc sections for
1715 dynamic relocs. */
1716
b34976b6 1717static bfd_boolean
4dfe6ac6
NC
1718allocate_dynrelocs (struct elf_link_hash_entry *h,
1719 void * inf)
0451c93c
MS
1720{
1721 struct bfd_link_info *info;
1722 struct elf_s390_link_hash_table *htab;
470b557a 1723 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1724 struct elf_dyn_relocs *p;
0451c93c 1725
e92d460e 1726 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1727 return TRUE;
0451c93c
MS
1728
1729 info = (struct bfd_link_info *) inf;
1730 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
1731 if (htab == NULL)
1732 return FALSE;
0451c93c 1733
470b557a
AK
1734 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1735 here if it is defined and referenced in a non-shared object. */
1736 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1737 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK
1738 else if (htab->elf.dynamic_sections_created
1739 && h->plt.refcount > 0)
0451c93c
MS
1740 {
1741 /* Make sure this symbol is output as a dynamic symbol.
1742 Undefined weak syms won't yet be marked as dynamic. */
1743 if (h->dynindx == -1
f5385ebf 1744 && !h->forced_local)
0451c93c 1745 {
c152c796 1746 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1747 return FALSE;
0451c93c
MS
1748 }
1749
0e1862bb 1750 if (bfd_link_pic (info)
4ec72bde 1751 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1752 {
f41345a7 1753 asection *s = htab->elf.splt;
0451c93c
MS
1754
1755 /* If this is the first .plt entry, make room for the special
1756 first entry. */
eea6121a
AM
1757 if (s->size == 0)
1758 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1759
eea6121a 1760 h->plt.offset = s->size;
0451c93c
MS
1761
1762 /* If this symbol is not defined in a regular file, and we are
1763 not generating a shared library, then set the symbol to this
1764 location in the .plt. This is required to make function
1765 pointers compare as equal between the normal executable and
1766 the shared library. */
0e1862bb 1767 if (! bfd_link_pic (info)
f5385ebf 1768 && !h->def_regular)
0451c93c
MS
1769 {
1770 h->root.u.def.section = s;
1771 h->root.u.def.value = h->plt.offset;
1772 }
ec338859 1773
0451c93c 1774 /* Make room for this entry. */
eea6121a 1775 s->size += PLT_ENTRY_SIZE;
ec338859 1776
0451c93c
MS
1777 /* We also need to make an entry in the .got.plt section, which
1778 will be placed in the .got section by the linker script. */
f41345a7 1779 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS
1780
1781 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1782 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS
1783 }
1784 else
1785 {
1786 h->plt.offset = (bfd_vma) -1;
f5385ebf 1787 h->needs_plt = 0;
5236c819 1788 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS
1789 }
1790 }
1791 else
1792 {
1793 h->plt.offset = (bfd_vma) -1;
f5385ebf 1794 h->needs_plt = 0;
5236c819 1795 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS
1796 }
1797
69fc87f1
MS
1798 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1799 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1800 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1801 we can save the dynamic TLS relocation. */
1802 if (h->got.refcount > 0
0e1862bb 1803 && !bfd_link_pic (info)
69fc87f1
MS
1804 && h->dynindx == -1
1805 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1806 {
1807 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1808 /* For the GOTIE access without a literal pool entry the offset has
1809 to be stored somewhere. The immediate value in the instruction
1810 is not bit enough so the value is stored in the got. */
1811 {
f41345a7
AK
1812 h->got.offset = htab->elf.sgot->size;
1813 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS
1814 }
1815 else
1816 h->got.offset = (bfd_vma) -1;
1817 }
1818 else if (h->got.refcount > 0)
0451c93c
MS
1819 {
1820 asection *s;
b34976b6 1821 bfd_boolean dyn;
69fc87f1 1822 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS
1823
1824 /* Make sure this symbol is output as a dynamic symbol.
1825 Undefined weak syms won't yet be marked as dynamic. */
1826 if (h->dynindx == -1
f5385ebf 1827 && !h->forced_local)
0451c93c 1828 {
c152c796 1829 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1830 return FALSE;
0451c93c
MS
1831 }
1832
f41345a7 1833 s = htab->elf.sgot;
eea6121a
AM
1834 h->got.offset = s->size;
1835 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS
1836 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1837 if (tls_type == GOT_TLS_GD)
eea6121a 1838 s->size += GOT_ENTRY_SIZE;
0451c93c 1839 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS
1840 /* R_390_TLS_IE64 needs one dynamic relocation,
1841 R_390_TLS_GD64 needs one if local symbol and two if global. */
1842 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1843 || tls_type >= GOT_TLS_IE)
f41345a7 1844 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1845 else if (tls_type == GOT_TLS_GD)
f41345a7 1846 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS
1847 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1848 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1849 && (bfd_link_pic (info)
82058a73 1850 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1851 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS
1852 }
1853 else
1854 h->got.offset = (bfd_vma) -1;
1855
0451c93c 1856 if (eh->dyn_relocs == NULL)
b34976b6 1857 return TRUE;
0451c93c
MS
1858
1859 /* In the shared -Bsymbolic case, discard space allocated for
1860 dynamic pc-relative relocs against symbols which turn out to be
1861 defined in regular objects. For the normal shared case, discard
1862 space for pc-relative relocs that have become local due to symbol
1863 visibility changes. */
1864
0e1862bb 1865 if (bfd_link_pic (info))
0451c93c 1866 {
8c21ca21 1867 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1868 {
00d8c7a9 1869 struct elf_dyn_relocs **pp;
0451c93c
MS
1870
1871 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1872 {
1873 p->count -= p->pc_count;
1874 p->pc_count = 0;
1875 if (p->count == 0)
1876 *pp = p->next;
1877 else
1878 pp = &p->next;
1879 }
1880 }
82058a73
MS
1881
1882 /* Also discard relocs on undefined weak syms with non-default
1883 visibility. */
22d606e9 1884 if (eh->dyn_relocs != NULL
82058a73 1885 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM
1886 {
1887 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1888 eh->dyn_relocs = NULL;
1889
1890 /* Make sure undefined weak symbols are output as a dynamic
1891 symbol in PIEs. */
1892 else if (h->dynindx == -1
1893 && !h->forced_local)
1894 {
1895 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1896 return FALSE;
1897 }
1898 }
0451c93c 1899 }
64285810 1900 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS
1901 {
1902 /* For the non-shared case, discard space for relocs against
1903 symbols which turn out to need copy relocs or are not
1904 dynamic. */
1905
f5385ebf
AM
1906 if (!h->non_got_ref
1907 && ((h->def_dynamic
1908 && !h->def_regular)
0451c93c
MS
1909 || (htab->elf.dynamic_sections_created
1910 && (h->root.type == bfd_link_hash_undefweak
1911 || h->root.type == bfd_link_hash_undefined))))
1912 {
1913 /* Make sure this symbol is output as a dynamic symbol.
1914 Undefined weak syms won't yet be marked as dynamic. */
1915 if (h->dynindx == -1
f5385ebf 1916 && !h->forced_local)
0451c93c 1917 {
c152c796 1918 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1919 return FALSE;
0451c93c
MS
1920 }
1921
1922 /* If that succeeded, we know we'll be keeping all the
1923 relocs. */
1924 if (h->dynindx != -1)
1925 goto keep;
1926 }
1927
1928 eh->dyn_relocs = NULL;
1929
ec338859 1930 keep: ;
0451c93c
MS
1931 }
1932
1933 /* Finally, allocate space. */
1934 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1935 {
1936 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1937 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS
1938 }
1939
b34976b6 1940 return TRUE;
0451c93c
MS
1941}
1942
1943/* Find any dynamic relocs that apply to read-only sections. */
1944
b34976b6 1945static bfd_boolean
2c3fc389 1946readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS
1947{
1948 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1949 struct elf_dyn_relocs *p;
0451c93c
MS
1950
1951 eh = (struct elf_s390_link_hash_entry *) h;
1952 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1953 {
1954 asection *s = p->sec->output_section;
1955
1956 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1957 {
1958 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1959
1960 info->flags |= DF_TEXTREL;
1961
1962 /* Not an error, just cut short the traversal. */
b34976b6 1963 return FALSE;
0451c93c
MS
1964 }
1965 }
b34976b6 1966 return TRUE;
0451c93c
MS
1967}
1968
a85d7ed0
NC
1969/* Set the sizes of the dynamic sections. */
1970
b34976b6 1971static bfd_boolean
4dfe6ac6
NC
1972elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1973 struct bfd_link_info *info)
a85d7ed0 1974{
0451c93c 1975 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
1976 bfd *dynobj;
1977 asection *s;
b34976b6 1978 bfd_boolean relocs;
0451c93c 1979 bfd *ibfd;
a85d7ed0 1980
0451c93c 1981 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
1982 if (htab == NULL)
1983 return FALSE;
1984
0451c93c
MS
1985 dynobj = htab->elf.dynobj;
1986 if (dynobj == NULL)
1987 abort ();
a85d7ed0 1988
0451c93c 1989 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC
1990 {
1991 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1992 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1993 {
3d4d4302 1994 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS
1995 if (s == NULL)
1996 abort ();
eea6121a 1997 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC
1998 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1999 }
2000 }
a85d7ed0 2001
0451c93c
MS
2002 /* Set up .got offsets for local syms, and space for local dynamic
2003 relocs. */
c72f2fb2 2004 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2005 {
0451c93c
MS
2006 bfd_signed_vma *local_got;
2007 bfd_signed_vma *end_local_got;
69fc87f1 2008 char *local_tls_type;
0451c93c
MS
2009 bfd_size_type locsymcount;
2010 Elf_Internal_Shdr *symtab_hdr;
2011 asection *srela;
470b557a
AK
2012 struct plt_entry *local_plt;
2013 unsigned int i;
a85d7ed0 2014
0ffa91dd 2015 if (! is_s390_elf (ibfd))
a85d7ed0
NC
2016 continue;
2017
0451c93c 2018 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2019 {
00d8c7a9 2020 struct elf_dyn_relocs *p;
0451c93c 2021
6edfbbad 2022 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2023 {
ec338859
AM
2024 if (!bfd_is_abs_section (p->sec)
2025 && bfd_is_abs_section (p->sec->output_section))
2026 {
2027 /* Input section has been discarded, either because
2028 it is a copy of a linkonce section or due to
2029 linker script /DISCARD/, so we'll be discarding
2030 the relocs too. */
2031 }
248866a8 2032 else if (p->count != 0)
ec338859
AM
2033 {
2034 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2035 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
2036 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2037 info->flags |= DF_TEXTREL;
ec338859 2038 }
a85d7ed0
NC
2039 }
2040 }
0451c93c
MS
2041
2042 local_got = elf_local_got_refcounts (ibfd);
2043 if (!local_got)
2044 continue;
2045
0ffa91dd 2046 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS
2047 locsymcount = symtab_hdr->sh_info;
2048 end_local_got = local_got + locsymcount;
69fc87f1 2049 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK
2050 s = htab->elf.sgot;
2051 srela = htab->elf.srelgot;
69fc87f1 2052 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2053 {
0451c93c 2054 if (*local_got > 0)
a85d7ed0 2055 {
eea6121a
AM
2056 *local_got = s->size;
2057 s->size += GOT_ENTRY_SIZE;
69fc87f1 2058 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2059 s->size += GOT_ENTRY_SIZE;
0e1862bb 2060 if (bfd_link_pic (info))
eea6121a 2061 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC
2062 }
2063 else
0451c93c 2064 *local_got = (bfd_vma) -1;
a85d7ed0 2065 }
470b557a
AK
2066
2067 local_plt = elf_s390_local_plt (ibfd);
2068 for (i = 0; i < symtab_hdr->sh_info; i++)
2069 {
2070 if (local_plt[i].plt.refcount > 0)
2071 {
2072 local_plt[i].plt.offset = htab->elf.iplt->size;
2073 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2074 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2075 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2076 }
2077 else
2078 local_plt[i].plt.offset = (bfd_vma) -1;
2079 }
0451c93c
MS
2080 }
2081
69fc87f1
MS
2082 if (htab->tls_ldm_got.refcount > 0)
2083 {
2084 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2085 relocs. */
f41345a7
AK
2086 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2087 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2088 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS
2089 }
2090 else
2091 htab->tls_ldm_got.offset = -1;
2092
0451c93c
MS
2093 /* Allocate global sym .plt and .got entries, and space for global
2094 sym dynamic relocs. */
2c3fc389 2095 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS
2096
2097 /* We now have determined the sizes of the various dynamic sections.
2098 Allocate memory for them. */
b34976b6 2099 relocs = FALSE;
0451c93c
MS
2100 for (s = dynobj->sections; s != NULL; s = s->next)
2101 {
2102 if ((s->flags & SEC_LINKER_CREATED) == 0)
2103 continue;
2104
f41345a7
AK
2105 if (s == htab->elf.splt
2106 || s == htab->elf.sgot
2107 || s == htab->elf.sgotplt
470b557a
AK
2108 || s == htab->sdynbss
2109 || s == htab->elf.iplt
2110 || s == htab->elf.igotplt
2111 || s == htab->irelifunc)
0451c93c
MS
2112 {
2113 /* Strip this section if we don't need it; see the
2114 comment below. */
2115 }
0112cd26 2116 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2117 {
f41345a7 2118 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2119 relocs = TRUE;
ec338859 2120
0451c93c
MS
2121 /* We use the reloc_count field as a counter if we need
2122 to copy relocs into the output file. */
2123 s->reloc_count = 0;
2124 }
2125 else
a85d7ed0
NC
2126 {
2127 /* It's not one of our sections, so don't allocate space. */
2128 continue;
2129 }
2130
eea6121a 2131 if (s->size == 0)
a85d7ed0 2132 {
0451c93c
MS
2133 /* If we don't need this section, strip it from the
2134 output file. This is to handle .rela.bss and
2135 .rela.plt. We must create it in
2136 create_dynamic_sections, because it must be created
2137 before the linker maps input sections to output
2138 sections. The linker does that before
2139 adjust_dynamic_symbol is called, and it is that
2140 function which decides whether anything needs to go
2141 into these sections. */
2142
8423293d 2143 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC
2144 continue;
2145 }
2146
c456f082
AM
2147 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2148 continue;
2149
0451c93c
MS
2150 /* Allocate memory for the section contents. We use bfd_zalloc
2151 here in case unused entries are not reclaimed before the
2152 section's contents are written out. This should not happen,
2153 but this way if it does, we get a R_390_NONE reloc instead
2154 of garbage. */
eea6121a 2155 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2156 if (s->contents == NULL)
b34976b6 2157 return FALSE;
a85d7ed0
NC
2158 }
2159
0451c93c 2160 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC
2161 {
2162 /* Add some entries to the .dynamic section. We fill in the
2163 values later, in elf_s390_finish_dynamic_sections, but we
2164 must add the entries now so that we get the correct size for
2165 the .dynamic section. The DT_DEBUG entry is filled in by the
2166 dynamic linker and used by the debugger. */
dc810e39 2167#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2168 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2169
0e1862bb 2170 if (bfd_link_executable (info))
a85d7ed0 2171 {
dc810e39 2172 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2173 return FALSE;
a85d7ed0
NC
2174 }
2175
f41345a7 2176 if (htab->elf.splt->size != 0)
a85d7ed0 2177 {
dc810e39
AM
2178 if (!add_dynamic_entry (DT_PLTGOT, 0)
2179 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2180 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2181 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2182 return FALSE;
a85d7ed0
NC
2183 }
2184
2185 if (relocs)
947216bf
AM
2186 {
2187 if (!add_dynamic_entry (DT_RELA, 0)
2188 || !add_dynamic_entry (DT_RELASZ, 0)
2189 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2190 return FALSE;
ec338859 2191
0451c93c
MS
2192 /* If any dynamic relocs apply to a read-only section,
2193 then we need a DT_TEXTREL entry. */
248866a8
AM
2194 if ((info->flags & DF_TEXTREL) == 0)
2195 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2196 info);
ec338859 2197
0451c93c
MS
2198 if ((info->flags & DF_TEXTREL) != 0)
2199 {
2200 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2201 return FALSE;
0451c93c 2202 }
a85d7ed0
NC
2203 }
2204 }
dc810e39 2205#undef add_dynamic_entry
a85d7ed0 2206
b34976b6 2207 return TRUE;
a85d7ed0
NC
2208}
2209
69fc87f1
MS
2210/* Return the base VMA address which should be subtracted from real addresses
2211 when resolving @dtpoff relocation.
2212 This is PT_TLS segment p_vaddr. */
2213
2214static bfd_vma
2c3fc389 2215dtpoff_base (struct bfd_link_info *info)
69fc87f1 2216{
e1918d23
AM
2217 /* If tls_sec is NULL, we should have signalled an error already. */
2218 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2219 return 0;
e1918d23 2220 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS
2221}
2222
2223/* Return the relocation value for @tpoff relocation
2224 if STT_TLS virtual address is ADDRESS. */
2225
2226static bfd_vma
2c3fc389 2227tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2228{
e1918d23 2229 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2230
e1918d23
AM
2231 /* If tls_sec is NULL, we should have signalled an error already. */
2232 if (htab->tls_sec == NULL)
69fc87f1 2233 return 0;
e1918d23 2234 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS
2235}
2236
2237/* Complain if TLS instruction relocation is against an invalid
2238 instruction. */
2239
2240static void
2c3fc389
NC
2241invalid_tls_insn (bfd *input_bfd,
2242 asection *input_section,
2243 Elf_Internal_Rela *rel)
69fc87f1
MS
2244{
2245 reloc_howto_type *howto;
2246
2247 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2248 (*_bfd_error_handler)
d003868e
AM
2249 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2250 input_bfd,
2251 input_section,
69fc87f1
MS
2252 (long) rel->r_offset,
2253 howto->name);
77df2968 2254 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS
2255}
2256
a85d7ed0
NC
2257/* Relocate a 390 ELF section. */
2258
b34976b6 2259static bfd_boolean
4dfe6ac6
NC
2260elf_s390_relocate_section (bfd *output_bfd,
2261 struct bfd_link_info *info,
2262 bfd *input_bfd,
2263 asection *input_section,
2264 bfd_byte *contents,
2265 Elf_Internal_Rela *relocs,
2266 Elf_Internal_Sym *local_syms,
2267 asection **local_sections)
a85d7ed0 2268{
0451c93c 2269 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
2270 Elf_Internal_Shdr *symtab_hdr;
2271 struct elf_link_hash_entry **sym_hashes;
2272 bfd_vma *local_got_offsets;
a85d7ed0
NC
2273 Elf_Internal_Rela *rel;
2274 Elf_Internal_Rela *relend;
2275
0ffa91dd
NC
2276 BFD_ASSERT (is_s390_elf (input_bfd));
2277
0451c93c 2278 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
2279 if (htab == NULL)
2280 return FALSE;
2281
0ffa91dd 2282 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC
2283 sym_hashes = elf_sym_hashes (input_bfd);
2284 local_got_offsets = elf_local_got_offsets (input_bfd);
2285
a85d7ed0
NC
2286 rel = relocs;
2287 relend = relocs + input_section->reloc_count;
2288 for (; rel < relend; rel++)
2289 {
5236c819 2290 unsigned int r_type;
a85d7ed0
NC
2291 reloc_howto_type *howto;
2292 unsigned long r_symndx;
2293 struct elf_link_hash_entry *h;
2294 Elf_Internal_Sym *sym;
2295 asection *sec;
0451c93c 2296 bfd_vma off;
a85d7ed0 2297 bfd_vma relocation;
b34976b6 2298 bfd_boolean unresolved_reloc;
a85d7ed0 2299 bfd_reloc_status_type r;
69fc87f1 2300 int tls_type;
470b557a 2301 asection *base_got = htab->elf.sgot;
a85d7ed0
NC
2302
2303 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2304 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM
2305 || r_type == (int) R_390_GNU_VTENTRY)
2306 continue;
5236c819 2307 if (r_type >= (int) R_390_max)
a85d7ed0
NC
2308 {
2309 bfd_set_error (bfd_error_bad_value);
b34976b6 2310 return FALSE;
a85d7ed0 2311 }
a85d7ed0 2312
b491616a 2313 howto = elf_howto_table + r_type;
a85d7ed0 2314 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2315
a85d7ed0
NC
2316 h = NULL;
2317 sym = NULL;
2318 sec = NULL;
b34976b6 2319 unresolved_reloc = FALSE;
a85d7ed0
NC
2320 if (r_symndx < symtab_hdr->sh_info)
2321 {
2322 sym = local_syms + r_symndx;
2323 sec = local_sections[r_symndx];
470b557a
AK
2324
2325 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2326 {
2327 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2328 if (local_plt == NULL)
2329 return FALSE;
2330
2331 /* Address of the PLT slot. */
2332 relocation = (htab->elf.iplt->output_section->vma
2333 + htab->elf.iplt->output_offset
2334 + local_plt[r_symndx].plt.offset);
2335
2336 switch (r_type)
2337 {
31db78f6
AK
2338 case R_390_PLTOFF16:
2339 case R_390_PLTOFF32:
2340 case R_390_PLTOFF64:
2341 relocation -= htab->elf.sgot->output_section->vma;
2342 break;
470b557a
AK
2343 case R_390_GOTPLT12:
2344 case R_390_GOTPLT16:
2345 case R_390_GOTPLT20:
2346 case R_390_GOTPLT32:
2347 case R_390_GOTPLT64:
2348 case R_390_GOTPLTENT:
2349 case R_390_GOT12:
2350 case R_390_GOT16:
2351 case R_390_GOT20:
2352 case R_390_GOT32:
2353 case R_390_GOT64:
2354 case R_390_GOTENT:
2355 {
2356 /* Write the PLT slot address into the GOT slot. */
2357 bfd_put_64 (output_bfd, relocation,
2358 htab->elf.sgot->contents +
2359 local_got_offsets[r_symndx]);
2360 relocation = (local_got_offsets[r_symndx] +
2361 htab->elf.sgot->output_offset);
2362
2363 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2364 relocation += htab->elf.sgot->output_section->vma;
2365 break;
2366 }
2367 default:
2368 break;
2369 }
2370 /* The output section is needed later in
2371 finish_dynamic_section when creating the dynamic
2372 relocation. */
2373 local_plt[r_symndx].sec = sec;
2374 goto do_relocation;
2375 }
2376 else
2377 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC
2378 }
2379 else
2380 {
560e09e9 2381 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2382 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2383
b2a8e766
AM
2384 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2385 r_symndx, symtab_hdr, sym_hashes,
2386 h, sec, relocation,
62d887d4 2387 unresolved_reloc, warned, ignored);
a85d7ed0
NC
2388 }
2389
dbaa2011 2390 if (sec != NULL && discarded_section (sec))
e4067dbb 2391 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2392 rel, 1, relend, howto, 0, contents);
ab96bf03 2393
0e1862bb 2394 if (bfd_link_relocatable (info))
ab96bf03
AM
2395 continue;
2396
a85d7ed0
NC
2397 switch (r_type)
2398 {
5236c819
MS
2399 case R_390_GOTPLT12:
2400 case R_390_GOTPLT16:
bd1ea41b 2401 case R_390_GOTPLT20:
5236c819
MS
2402 case R_390_GOTPLT32:
2403 case R_390_GOTPLT64:
2404 case R_390_GOTPLTENT:
2405 /* There are three cases for a GOTPLT relocation. 1) The
2406 relocation is against the jump slot entry of a plt that
2407 will get emitted to the output file. 2) The relocation
2408 is against the jump slot of a plt entry that has been
2409 removed. elf_s390_adjust_gotplt has created a GOT entry
2410 as replacement. 3) The relocation is against a local symbol.
2411 Cases 2) and 3) are the same as the GOT relocation code
2412 so we just have to test for case 1 and fall through for
2413 the other two. */
2414 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2415 {
2416 bfd_vma plt_index;
2417
470b557a
AK
2418 if (s390_is_ifunc_symbol_p (h))
2419 {
2420 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2421 relocation = (plt_index * GOT_ENTRY_SIZE +
2422 htab->elf.igotplt->output_offset);
2423 if (r_type == R_390_GOTPLTENT)
2424 relocation += htab->elf.igotplt->output_section->vma;
2425 }
2426 else
2427 {
2428 /* Calc. index no.
2429 Current offset - size first entry / entry size. */
2430 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2431 PLT_ENTRY_SIZE;
2432
2433 /* Offset in GOT is PLT index plus GOT headers(3)
2434 times 4, addr & GOT addr. */
2435 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2436 if (r_type == R_390_GOTPLTENT)
2437 relocation += htab->elf.sgot->output_section->vma;
2438 }
5236c819 2439 unresolved_reloc = FALSE;
5236c819
MS
2440 break;
2441 }
2442 /* Fall through. */
2443
947216bf
AM
2444 case R_390_GOT12:
2445 case R_390_GOT16:
bd1ea41b 2446 case R_390_GOT20:
947216bf
AM
2447 case R_390_GOT32:
2448 case R_390_GOT64:
2449 case R_390_GOTENT:
2450 /* Relocation is to the entry for this symbol in the global
2451 offset table. */
470b557a 2452 if (base_got == NULL)
0451c93c 2453 abort ();
a85d7ed0 2454
947216bf
AM
2455 if (h != NULL)
2456 {
b34976b6 2457 bfd_boolean dyn;
a85d7ed0 2458
947216bf 2459 off = h->got.offset;
0451c93c 2460 dyn = htab->elf.dynamic_sections_created;
470b557a
AK
2461
2462 if (s390_is_ifunc_symbol_p (h))
2463 {
2464 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2465 if (off == (bfd_vma)-1)
2466 {
2467 /* No explicit GOT usage so redirect to the
2468 got.iplt slot. */
2469 base_got = htab->elf.igotplt;
2470 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2471 }
2472 else
2473 {
2474 /* Explicit GOT slots must contain the address
2475 of the PLT slot. This will be handled in
2476 finish_dynamic_symbol. */
2477 }
2478 }
0e1862bb
L
2479 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2480 bfd_link_pic (info),
2481 h)
2482 || (bfd_link_pic (info)
470b557a
AK
2483 && SYMBOL_REFERENCES_LOCAL (info, h))
2484 || (ELF_ST_VISIBILITY (h->other)
2485 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM
2486 {
2487 /* This is actually a static link, or it is a
2488 -Bsymbolic link and the symbol is defined
2489 locally, or the symbol was forced to be local
2490 because of a version file. We must initialize
2491 this entry in the global offset table. Since the
2492 offset must always be a multiple of 2, we use the
2493 least significant bit to record whether we have
2494 initialized it already.
2495
2496 When doing a dynamic link, we create a .rel.got
2497 relocation entry to initialize the value. This
2498 is done in the finish_dynamic_symbol routine. */
2499 if ((off & 1) != 0)
2500 off &= ~1;
2501 else
2502 {
a85d7ed0 2503 bfd_put_64 (output_bfd, relocation,
470b557a 2504 base_got->contents + off);
947216bf
AM
2505 h->got.offset |= 1;
2506 }
a63cc5f7
AK
2507
2508 if ((h->def_regular
0e1862bb 2509 && bfd_link_pic (info)
a63cc5f7
AK
2510 && SYMBOL_REFERENCES_LOCAL (info, h))
2511 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2512 && ((r_type == R_390_GOTENT
2513 && (bfd_get_16 (input_bfd,
2514 contents + rel->r_offset - 2)
2515 & 0xff0f) == 0xc408)
2516 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2517 || (r_type == R_390_GOT20
2518 && (bfd_get_32 (input_bfd,
2519 contents + rel->r_offset - 2)
2520 & 0xff00f000) == 0xe300c000
2521 && bfd_get_8 (input_bfd,
2522 contents + rel->r_offset + 3) == 0x04)))
2523
2524 {
2525 unsigned short new_insn =
2526 (0xc000 | (bfd_get_8 (input_bfd,
2527 contents + rel->r_offset - 1) & 0xf0));
2528 bfd_put_16 (output_bfd, new_insn,
2529 contents + rel->r_offset - 2);
2530 r_type = R_390_PC32DBL;
2531 rel->r_addend = 2;
2532 howto = elf_howto_table + r_type;
2533 relocation = h->root.u.def.value
2534 + h->root.u.def.section->output_section->vma
2535 + h->root.u.def.section->output_offset;
2536 goto do_relocation;
2537 }
947216bf 2538 }
0451c93c 2539 else
b34976b6 2540 unresolved_reloc = FALSE;
947216bf
AM
2541 }
2542 else
2543 {
0451c93c
MS
2544 if (local_got_offsets == NULL)
2545 abort ();
a85d7ed0 2546
947216bf 2547 off = local_got_offsets[r_symndx];
a85d7ed0 2548
947216bf
AM
2549 /* The offset must always be a multiple of 8. We use
2550 the least significant bit to record whether we have
2551 already generated the necessary reloc. */
2552 if ((off & 1) != 0)
2553 off &= ~1;
2554 else
2555 {
2556 bfd_put_64 (output_bfd, relocation,
f41345a7 2557 htab->elf.sgot->contents + off);
a85d7ed0 2558
0e1862bb 2559 if (bfd_link_pic (info))
947216bf
AM
2560 {
2561 asection *s;
2562 Elf_Internal_Rela outrel;
2563 bfd_byte *loc;
a85d7ed0 2564
f41345a7 2565 s = htab->elf.srelgot;
947216bf 2566 if (s == NULL)
0451c93c 2567 abort ();
a85d7ed0 2568
f41345a7
AK
2569 outrel.r_offset = (htab->elf.sgot->output_section->vma
2570 + htab->elf.sgot->output_offset
947216bf
AM
2571 + off);
2572 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2573 outrel.r_addend = relocation;
947216bf
AM
2574 loc = s->contents;
2575 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2576 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2577 }
a85d7ed0 2578
947216bf
AM
2579 local_got_offsets[r_symndx] |= 1;
2580 }
2581 }
a85d7ed0 2582
0451c93c
MS
2583 if (off >= (bfd_vma) -2)
2584 abort ();
2585
470b557a 2586 relocation = base_got->output_offset + off;
0451c93c 2587
ae9a127f
NC
2588 /* For @GOTENT the relocation is against the offset between
2589 the instruction and the symbols entry in the GOT and not
2590 between the start of the GOT and the symbols entry. We
2591 add the vma of the GOT to get the correct value. */
5236c819
MS
2592 if ( r_type == R_390_GOTENT
2593 || r_type == R_390_GOTPLTENT)
470b557a 2594 relocation += base_got->output_section->vma;
a85d7ed0 2595
947216bf 2596 break;
99c79b2e 2597
5236c819
MS
2598 case R_390_GOTOFF16:
2599 case R_390_GOTOFF32:
2600 case R_390_GOTOFF64:
947216bf
AM
2601 /* Relocation is relative to the start of the global offset
2602 table. */
a85d7ed0 2603
947216bf
AM
2604 /* Note that sgot->output_offset is not involved in this
2605 calculation. We always want the start of .got. If we
2606 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2607 permitted by the ABI, we might have to change this
2608 calculation. */
f41345a7 2609 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2610 break;
a85d7ed0 2611
947216bf 2612 case R_390_GOTPC:
a85d7ed0 2613 case R_390_GOTPCDBL:
947216bf 2614 /* Use global offset table as symbol value. */
f41345a7 2615 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2616 unresolved_reloc = FALSE;
947216bf 2617 break;
a85d7ed0 2618
fb798c50 2619 case R_390_PLT12DBL:
947216bf 2620 case R_390_PLT16DBL:
fb798c50 2621 case R_390_PLT24DBL:
947216bf
AM
2622 case R_390_PLT32:
2623 case R_390_PLT32DBL:
2624 case R_390_PLT64:
2625 /* Relocation is to the entry for this symbol in the
2626 procedure linkage table. */
a85d7ed0 2627
947216bf
AM
2628 /* Resolve a PLT32 reloc against a local symbol directly,
2629 without using the procedure linkage table. */
2630 if (h == NULL)
2631 break;
a85d7ed0 2632
947216bf 2633 if (h->plt.offset == (bfd_vma) -1
31db78f6 2634 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM
2635 {
2636 /* We didn't make a PLT entry for this symbol. This
2637 happens when statically linking PIC code, or when
2638 using -Bsymbolic. */
2639 break;
2640 }
470b557a
AK
2641 if (s390_is_ifunc_symbol_p (h))
2642 relocation = (htab->elf.iplt->output_section->vma
2643 + htab->elf.iplt->output_offset
2644 + h->plt.offset);
2645 else
2646 relocation = (htab->elf.splt->output_section->vma
2647 + htab->elf.splt->output_offset
2648 + h->plt.offset);
b34976b6 2649 unresolved_reloc = FALSE;
26e41594 2650 break;
5236c819
MS
2651
2652 case R_390_PLTOFF16:
2653 case R_390_PLTOFF32:
2654 case R_390_PLTOFF64:
26e41594
AM
2655 /* Relocation is to the entry for this symbol in the
2656 procedure linkage table relative to the start of the GOT. */
5236c819
MS
2657
2658 /* For local symbols or if we didn't make a PLT entry for
2659 this symbol resolve the symbol directly. */
31db78f6 2660 if (h == NULL
5236c819 2661 || h->plt.offset == (bfd_vma) -1
31db78f6 2662 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2663 {
f41345a7 2664 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS
2665 break;
2666 }
2667
470b557a
AK
2668 if (s390_is_ifunc_symbol_p (h))
2669 relocation = (htab->elf.iplt->output_section->vma
2670 + htab->elf.iplt->output_offset
2671 + h->plt.offset
2672 - htab->elf.sgot->output_section->vma);
2673 else
2674 relocation = (htab->elf.splt->output_section->vma
2675 + htab->elf.splt->output_offset
2676 + h->plt.offset
2677 - htab->elf.sgot->output_section->vma);
5236c819 2678 unresolved_reloc = FALSE;
947216bf
AM
2679 break;
2680
2681 case R_390_8:
2682 case R_390_16:
2683 case R_390_32:
2684 case R_390_64:
2685 case R_390_PC16:
fb798c50 2686 case R_390_PC12DBL:
947216bf 2687 case R_390_PC16DBL:
fb798c50 2688 case R_390_PC24DBL:
947216bf 2689 case R_390_PC32:
a85d7ed0 2690 case R_390_PC32DBL:
947216bf 2691 case R_390_PC64:
470b557a
AK
2692
2693 if (h != NULL
2694 && s390_is_ifunc_symbol_p (h)
2695 && h->def_regular)
2696 {
0e1862bb 2697 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK
2698 {
2699 /* For a non-shared object STT_GNU_IFUNC symbol must
2700 go through PLT. */
2701 relocation = (htab->elf.iplt->output_section->vma
2702 + htab->elf.iplt->output_offset
2703 + h ->plt.offset);
2704 goto do_relocation;
2705 }
2706 else
2707 {
2708 /* For shared objects a runtime relocation is needed. */
2709
2710 Elf_Internal_Rela outrel;
2711 asection *sreloc;
2712
2713 /* Need a dynamic relocation to get the real function
2714 address. */
2715 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2716 info,
2717 input_section,
2718 rel->r_offset);
2719 if (outrel.r_offset == (bfd_vma) -1
2720 || outrel.r_offset == (bfd_vma) -2)
2721 abort ();
2722
2723 outrel.r_offset += (input_section->output_section->vma
2724 + input_section->output_offset);
2725
2726 if (h->dynindx == -1
2727 || h->forced_local
0e1862bb 2728 || bfd_link_executable (info))
470b557a
AK
2729 {
2730 /* This symbol is resolved locally. */
2731 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2732 outrel.r_addend = (h->root.u.def.value
2733 + h->root.u.def.section->output_section->vma
2734 + h->root.u.def.section->output_offset);
2735 }
2736 else
2737 {
2738 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2739 outrel.r_addend = 0;
2740 }
2741
2742 sreloc = htab->elf.irelifunc;
2743 elf_append_rela (output_bfd, sreloc, &outrel);
2744
2745 /* If this reloc is against an external symbol, we
2746 do not want to fiddle with the addend. Otherwise,
2747 we need to include the symbol value so that it
2748 becomes an addend for the dynamic reloc. For an
2749 internal symbol, we have updated addend. */
2750 continue;
2751 }
2752 }
2753
b1e24c02 2754 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
2755 break;
2756
0e1862bb 2757 if ((bfd_link_pic (info)
82058a73
MS
2758 && (h == NULL
2759 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2760 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2761 && ((r_type != R_390_PC16
fb798c50 2762 && r_type != R_390_PC12DBL
0451c93c 2763 && r_type != R_390_PC16DBL
fb798c50 2764 && r_type != R_390_PC24DBL
0451c93c
MS
2765 && r_type != R_390_PC32
2766 && r_type != R_390_PC32DBL
2767 && r_type != R_390_PC64)
8c21ca21 2768 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2769 || (ELIMINATE_COPY_RELOCS
0e1862bb 2770 && !bfd_link_pic (info)
0451c93c
MS
2771 && h != NULL
2772 && h->dynindx != -1
f5385ebf
AM
2773 && !h->non_got_ref
2774 && ((h->def_dynamic
2775 && !h->def_regular)
0451c93c
MS
2776 || h->root.type == bfd_link_hash_undefweak
2777 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM
2778 {
2779 Elf_Internal_Rela outrel;
b34976b6 2780 bfd_boolean skip, relocate;
0451c93c 2781 asection *sreloc;
947216bf 2782 bfd_byte *loc;
a85d7ed0 2783
947216bf
AM
2784 /* When generating a shared object, these relocations
2785 are copied into the output file to be resolved at run
2786 time. */
b34976b6
AM
2787 skip = FALSE;
2788 relocate = FALSE;
a85d7ed0 2789
c629eae0
JJ
2790 outrel.r_offset =
2791 _bfd_elf_section_offset (output_bfd, info, input_section,
2792 rel->r_offset);
2793 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2794 skip = TRUE;
0bb2d96a 2795 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2796 skip = TRUE, relocate = TRUE;
a85d7ed0 2797
947216bf
AM
2798 outrel.r_offset += (input_section->output_section->vma
2799 + input_section->output_offset);
a85d7ed0 2800
947216bf 2801 if (skip)
0bb2d96a 2802 memset (&outrel, 0, sizeof outrel);
947216bf 2803 else if (h != NULL
0451c93c
MS
2804 && h->dynindx != -1
2805 && (r_type == R_390_PC16
fb798c50 2806 || r_type == R_390_PC12DBL
0451c93c 2807 || r_type == R_390_PC16DBL
fb798c50 2808 || r_type == R_390_PC24DBL
0451c93c
MS
2809 || r_type == R_390_PC32
2810 || r_type == R_390_PC32DBL
2811 || r_type == R_390_PC64
0e1862bb 2812 || !bfd_link_pic (info)
8c21ca21 2813 || !SYMBOLIC_BIND (info, h)
f5385ebf 2814 || !h->def_regular))
947216bf
AM
2815 {
2816 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2817 outrel.r_addend = rel->r_addend;
947216bf
AM
2818 }
2819 else
2820 {
0451c93c 2821 /* This symbol is local, or marked to become local. */
90ced0dd 2822 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS
2823 if (r_type == R_390_64)
2824 {
2825 relocate = TRUE;
2826 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS
2827 }
2828 else
2829 {
2830 long sindx;
2831
90ced0dd 2832 if (bfd_is_abs_section (sec))
b5727d75
MS
2833 sindx = 0;
2834 else if (sec == NULL || sec->owner == NULL)
2835 {
2836 bfd_set_error(bfd_error_bad_value);
2837 return FALSE;
2838 }
2839 else
2840 {
2841 asection *osec;
2842
2843 osec = sec->output_section;
2844 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM
2845
2846 if (sindx == 0)
2847 {
2848 osec = htab->elf.text_index_section;
2849 sindx = elf_section_data (osec)->dynindx;
2850 }
2851 BFD_ASSERT (sindx != 0);
90ced0dd
MS
2852
2853 /* We are turning this relocation into one
2854 against a section symbol, so subtract out
2855 the output section's address but not the
2856 offset of the input section in the output
2857 section. */
90ced0dd 2858 outrel.r_addend -= osec->vma;
b5727d75
MS
2859 }
2860 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2861 }
0451c93c 2862 }
a85d7ed0 2863
0451c93c
MS
2864 sreloc = elf_section_data (input_section)->sreloc;
2865 if (sreloc == NULL)
2866 abort ();
2867
947216bf
AM
2868 loc = sreloc->contents;
2869 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2870 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2871
947216bf
AM
2872 /* If this reloc is against an external symbol, we do
2873 not want to fiddle with the addend. Otherwise, we
2874 need to include the symbol value so that it becomes
2875 an addend for the dynamic reloc. */
2876 if (! relocate)
2877 continue;
2878 }
a85d7ed0 2879
947216bf 2880 break;
a85d7ed0 2881
69fc87f1
MS
2882 /* Relocations for tls literal pool entries. */
2883 case R_390_TLS_IE64:
0e1862bb 2884 if (bfd_link_pic (info))
69fc87f1
MS
2885 {
2886 Elf_Internal_Rela outrel;
2887 asection *sreloc;
2888 bfd_byte *loc;
2889
2890 outrel.r_offset = rel->r_offset
2891 + input_section->output_section->vma
2892 + input_section->output_offset;
2893 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2894 sreloc = elf_section_data (input_section)->sreloc;
2895 if (sreloc == NULL)
2896 abort ();
2897 loc = sreloc->contents;
2898 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2899 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2900 }
ae9a127f 2901 /* Fall through. */
69fc87f1
MS
2902
2903 case R_390_TLS_GD64:
2904 case R_390_TLS_GOTIE64:
2905 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2906 tls_type = GOT_UNKNOWN;
2907 if (h == NULL && local_got_offsets)
2908 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2909 else if (h != NULL)
2910 {
2911 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2912 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS
2913 r_type = R_390_TLS_LE64;
2914 }
2915 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2916 r_type = R_390_TLS_IE64;
2917
2918 if (r_type == R_390_TLS_LE64)
2919 {
2920 /* This relocation gets optimized away by the local exec
2921 access optimization. */
2922 BFD_ASSERT (! unresolved_reloc);
2923 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2924 contents + rel->r_offset);
2925 continue;
2926 }
2927
f41345a7 2928 if (htab->elf.sgot == NULL)
69fc87f1
MS
2929 abort ();
2930
2931 if (h != NULL)
2932 off = h->got.offset;
2933 else
2934 {
2935 if (local_got_offsets == NULL)
2936 abort ();
2937
2938 off = local_got_offsets[r_symndx];
2939 }
2940
2941 emit_tls_relocs:
2942
2943 if ((off & 1) != 0)
2944 off &= ~1;
26e41594 2945 else
69fc87f1
MS
2946 {
2947 Elf_Internal_Rela outrel;
2948 bfd_byte *loc;
2949 int dr_type, indx;
2950
f41345a7 2951 if (htab->elf.srelgot == NULL)
69fc87f1
MS
2952 abort ();
2953
f41345a7
AK
2954 outrel.r_offset = (htab->elf.sgot->output_section->vma
2955 + htab->elf.sgot->output_offset + off);
69fc87f1
MS
2956
2957 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2958 if (r_type == R_390_TLS_GD64)
2959 dr_type = R_390_TLS_DTPMOD;
2960 else
2961 dr_type = R_390_TLS_TPOFF;
2962 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2963 outrel.r_addend = relocation - dtpoff_base (info);
2964 else
2965 outrel.r_addend = 0;
2966 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK
2967 loc = htab->elf.srelgot->contents;
2968 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS
2969 * sizeof (Elf64_External_Rela);
2970 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2971
2972 if (r_type == R_390_TLS_GD64)
2973 {
2974 if (indx == 0)
2975 {
2976 BFD_ASSERT (! unresolved_reloc);
2977 bfd_put_64 (output_bfd,
2978 relocation - dtpoff_base (info),
f41345a7 2979 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS
2980 }
2981 else
2982 {
2983 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2984 outrel.r_offset += GOT_ENTRY_SIZE;
2985 outrel.r_addend = 0;
f41345a7 2986 htab->elf.srelgot->reloc_count++;
69fc87f1
MS
2987 loc += sizeof (Elf64_External_Rela);
2988 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2989 }
2990 }
2991
2992 if (h != NULL)
2993 h->got.offset |= 1;
2994 else
2995 local_got_offsets[r_symndx] |= 1;
2996 }
2997
2998 if (off >= (bfd_vma) -2)
2999 abort ();
3000 if (r_type == ELF64_R_TYPE (rel->r_info))
3001 {
f41345a7 3002 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3003 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 3004 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS
3005 unresolved_reloc = FALSE;
3006 }
3007 else
3008 {
f41345a7 3009 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS
3010 contents + rel->r_offset);
3011 continue;
3012 }
3013 break;
3014
3015 case R_390_TLS_GOTIE12:
bd1ea41b 3016 case R_390_TLS_GOTIE20:
69fc87f1
MS
3017 case R_390_TLS_IEENT:
3018 if (h == NULL)
3019 {
3020 if (local_got_offsets == NULL)
3021 abort();
3022 off = local_got_offsets[r_symndx];
0e1862bb 3023 if (bfd_link_pic (info))
69fc87f1
MS
3024 goto emit_tls_relocs;
3025 }
3026 else
3027 {
3028 off = h->got.offset;
3029 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 3030 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS
3031 goto emit_tls_relocs;
3032 }
3033
f41345a7 3034 if (htab->elf.sgot == NULL)
69fc87f1
MS
3035 abort ();
3036
3037 BFD_ASSERT (! unresolved_reloc);
3038 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK
3039 htab->elf.sgot->contents + off);
3040 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3041 if (r_type == R_390_TLS_IEENT)
f41345a7 3042 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS
3043 unresolved_reloc = FALSE;
3044 break;
3045
3046 case R_390_TLS_LDM64:
0e1862bb 3047 if (! bfd_link_pic (info))
69fc87f1
MS
3048 /* The literal pool entry this relocation refers to gets ignored
3049 by the optimized code of the local exec model. Do nothing
3050 and the value will turn out zero. */
3051 continue;
3052
f41345a7 3053 if (htab->elf.sgot == NULL)
69fc87f1
MS
3054 abort ();
3055
3056 off = htab->tls_ldm_got.offset;
3057 if (off & 1)
3058 off &= ~1;
3059 else
3060 {
3061 Elf_Internal_Rela outrel;
3062 bfd_byte *loc;
3063
f41345a7 3064 if (htab->elf.srelgot == NULL)
69fc87f1
MS
3065 abort ();
3066
f41345a7
AK
3067 outrel.r_offset = (htab->elf.sgot->output_section->vma
3068 + htab->elf.sgot->output_offset + off);
69fc87f1
MS
3069
3070 bfd_put_64 (output_bfd, 0,
f41345a7 3071 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS
3072 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3073 outrel.r_addend = 0;
f41345a7
AK
3074 loc = htab->elf.srelgot->contents;
3075 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS
3076 * sizeof (Elf64_External_Rela);
3077 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3078 htab->tls_ldm_got.offset |= 1;
3079 }
f41345a7 3080 relocation = htab->elf.sgot->output_offset + off;
26e41594 3081 unresolved_reloc = FALSE;
69fc87f1
MS
3082 break;
3083
3084 case R_390_TLS_LE64:
3cbc1e5e 3085 if (bfd_link_dll (info))
69fc87f1
MS
3086 {
3087 /* Linking a shared library with non-fpic code requires
3088 a R_390_TLS_TPOFF relocation. */
3089 Elf_Internal_Rela outrel;
3090 asection *sreloc;
3091 bfd_byte *loc;
3092 int indx;
3093
3094 outrel.r_offset = rel->r_offset
3095 + input_section->output_section->vma
3096 + input_section->output_offset;
3097 if (h != NULL && h->dynindx != -1)
3098 indx = h->dynindx;
3099 else
3100 indx = 0;
3101 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3102 if (indx == 0)
3103 outrel.r_addend = relocation - dtpoff_base (info);
3104 else
3105 outrel.r_addend = 0;
3106 sreloc = elf_section_data (input_section)->sreloc;
3107 if (sreloc == NULL)
3108 abort ();
3109 loc = sreloc->contents;
3110 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3111 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3112 }
3113 else
3114 {
3115 BFD_ASSERT (! unresolved_reloc);
3116 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3117 contents + rel->r_offset);
3118 }
3119 continue;
3120
3121 case R_390_TLS_LDO64:
0e1862bb 3122 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS
3123 relocation -= dtpoff_base (info);
3124 else
3125 /* When converting LDO to LE, we must negate. */
3126 relocation = -tpoff (info, relocation);
3127 break;
3128
3129 /* Relocations for tls instructions. */
3130 case R_390_TLS_LOAD:
3131 case R_390_TLS_GDCALL:
3132 case R_390_TLS_LDCALL:
3133 tls_type = GOT_UNKNOWN;
3134 if (h == NULL && local_got_offsets)
3135 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3136 else if (h != NULL)
3137 tls_type = elf_s390_hash_entry(h)->tls_type;
3138
3139 if (tls_type == GOT_TLS_GD)
3140 continue;
3141
3142 if (r_type == R_390_TLS_LOAD)
3143 {
0e1862bb 3144 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS
3145 {
3146 /* IE->LE transition. Four valid cases:
3147 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3148 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3149 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3150 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3151 unsigned int insn0, insn1, ry;
3152
3153 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3154 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3155 if (insn1 != 0x0004)
3156 invalid_tls_insn (input_bfd, input_section, rel);
3157 ry = 0;
3158 if ((insn0 & 0xff00f000) == 0xe3000000)
3159 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3160 ry = (insn0 & 0x000f0000);
3161 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3162 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3163 ry = (insn0 & 0x0000f000) << 4;
3164 else if ((insn0 & 0xff00f000) == 0xe300c000)
3165 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3166 ry = (insn0 & 0x000f0000);
3167 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3168 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3169 ry = (insn0 & 0x0000f000) << 4;
3170 else
3171 invalid_tls_insn (input_bfd, input_section, rel);
3172 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3173 insn1 = 0x000d;
3174 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3175 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3176 }
3177 }
3178 else if (r_type == R_390_TLS_GDCALL)
3179 {
3180 unsigned int insn0, insn1;
3181
3182 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3183 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3184 if ((insn0 & 0xffff0000) != 0xc0e50000)
3185 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3186 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS
3187 {
3188 /* GD->LE transition.
3189 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3190 insn0 = 0xc0040000;
3191 insn1 = 0x0000;
3192 }
3193 else
3194 {
3195 /* GD->IE transition.
3196 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3197 insn0 = 0xe322c000;
3198 insn1 = 0x0004;
3199 }
3200 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3201 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3202 }
3203 else if (r_type == R_390_TLS_LDCALL)
3204 {
0e1862bb 3205 if (!bfd_link_pic (info))
69fc87f1
MS
3206 {
3207 unsigned int insn0, insn1;
3208
3209 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3210 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3211 if ((insn0 & 0xffff0000) != 0xc0e50000)
3212 invalid_tls_insn (input_bfd, input_section, rel);
3213 /* LD->LE transition.
3214 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3215 insn0 = 0xc0040000;
3216 insn1 = 0x0000;
3217 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3218 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3219 }
3220 }
3221 continue;
3222
947216bf
AM
3223 default:
3224 break;
3225 }
a85d7ed0 3226
239e1f3a
AM
3227 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3228 because such sections are not SEC_ALLOC and thus ld.so will
3229 not process them. */
0451c93c 3230 if (unresolved_reloc
239e1f3a 3231 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
3232 && h->def_dynamic)
3233 && _bfd_elf_section_offset (output_bfd, info, input_section,
3234 rel->r_offset) != (bfd_vma) -1)
0451c93c 3235 (*_bfd_error_handler)
843fe662 3236 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM
3237 input_bfd,
3238 input_section,
0451c93c 3239 (long) rel->r_offset,
843fe662 3240 howto->name,
0451c93c
MS
3241 h->root.root.string);
3242
470b557a
AK
3243 do_relocation:
3244
fb798c50
AK
3245 /* When applying a 24 bit reloc we need to start one byte
3246 earlier. Otherwise the 32 bit get/put bfd operations might
3247 access a byte after the actual section. */
3248 if (r_type == R_390_PC24DBL
3249 || r_type == R_390_PLT24DBL)
3250 rel->r_offset--;
3251
bd1ea41b
MS
3252 if (r_type == R_390_20
3253 || r_type == R_390_GOT20
3254 || r_type == R_390_GOTPLT20
3255 || r_type == R_390_TLS_GOTIE20)
3256 {
3257 relocation += rel->r_addend;
3258 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3259 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3260 contents, rel->r_offset,
3261 relocation, 0);
3262 }
3263 else
3264 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC
3265 contents, rel->r_offset,
3266 relocation, rel->r_addend);
3267
3268 if (r != bfd_reloc_ok)
3269 {
0451c93c 3270 const char *name;
ec338859 3271
0451c93c
MS
3272 if (h != NULL)
3273 name = h->root.root.string;
3274 else
a85d7ed0 3275 {
0451c93c
MS
3276 name = bfd_elf_string_from_elf_section (input_bfd,
3277 symtab_hdr->sh_link,
3278 sym->st_name);
3279 if (name == NULL)
b34976b6 3280 return FALSE;
0451c93c
MS
3281 if (*name == '\0')
3282 name = bfd_section_name (input_bfd, sec);
3283 }
ec338859 3284
0451c93c
MS
3285 if (r == bfd_reloc_overflow)
3286 {
ec338859 3287
0451c93c 3288 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
3289 (info, (h ? &h->root : NULL), name, howto->name,
3290 (bfd_vma) 0, input_bfd, input_section,
3291 rel->r_offset)))
b34976b6 3292 return FALSE;
0451c93c
MS
3293 }
3294 else
3295 {
3296 (*_bfd_error_handler)
d003868e
AM
3297 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3298 input_bfd, input_section,
0451c93c 3299 (long) rel->r_offset, name, (int) r);
b34976b6 3300 return FALSE;
a85d7ed0
NC
3301 }
3302 }
3303 }
3304
b34976b6 3305 return TRUE;
a85d7ed0
NC
3306}
3307
470b557a
AK
3308/* Generate the PLT slots together with the dynamic relocations needed
3309 for IFUNC symbols. */
3310
3311static void
3312elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3313 struct bfd_link_info *info,
3314 struct elf_link_hash_entry *h,
3315 struct elf_s390_link_hash_table *htab,
3316 bfd_vma plt_offset,
3317 bfd_vma resolver_address)
3318{
3319 bfd_vma plt_index;
3320 bfd_vma got_offset;
3321 Elf_Internal_Rela rela;
3322 bfd_byte *loc;
3323 asection *plt, *gotplt, *relplt;
3324
3325 if (htab->elf.iplt == NULL
3326 || htab->elf.igotplt == NULL
3327 || htab->elf.irelplt == NULL)
3328 abort ();
3329
3330 /* Index of the PLT slot within iplt section. */
3331 plt_index = plt_offset / PLT_ENTRY_SIZE;
3332 plt = htab->elf.iplt;
3333 /* Offset into the igot.plt section. */
3334 got_offset = plt_index * GOT_ENTRY_SIZE;
3335 gotplt = htab->elf.igotplt;
3336 relplt = htab->elf.irelplt;
3337
3338 /* Fill in the blueprint of a PLT. */
3339 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3340 PLT_ENTRY_SIZE);
3341
3342 /* Fixup the relative address to the GOT entry */
3343 bfd_put_32 (output_bfd,
3344 (gotplt->output_section->vma +
3345 gotplt->output_offset + got_offset
3346 - (plt->output_section->vma +
3347 plt->output_offset +
3348 plt_offset))/2,
3349 plt->contents + plt_offset + 2);
3350 /* Fixup the relative branch to PLT 0 */
3351 bfd_put_32 (output_bfd, - (plt->output_offset +
3352 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3353 plt->contents + plt_offset + 24);
3354 /* Fixup offset into .rela.plt section. */
3355 bfd_put_32 (output_bfd, relplt->output_offset +
3356 plt_index * sizeof (Elf64_External_Rela),
3357 plt->contents + plt_offset + 28);
3358
3359 /* Fill in the entry in the global offset table.
3360 Points to instruction after GOT offset. */
3361 bfd_put_64 (output_bfd,
3362 (plt->output_section->vma
3363 + plt->output_offset
3364 + plt_offset
3365 + 14),
3366 gotplt->contents + got_offset);
3367
3368 /* Fill in the entry in the .rela.plt section. */
3369 rela.r_offset = (gotplt->output_section->vma
3370 + gotplt->output_offset
3371 + got_offset);
3372
3373 if (!h
3374 || h->dynindx == -1
0e1862bb 3375 || ((bfd_link_executable (info)
470b557a
AK
3376 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3377 && h->def_regular))
3378 {
3379 /* The symbol can be locally resolved. */
3380 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3381 rela.r_addend = resolver_address;
3382 }
3383 else
3384 {
3385 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3386 rela.r_addend = 0;
3387 }
3388
3389 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3390 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3391}
3392
3393
a85d7ed0
NC
3394/* Finish up dynamic symbol handling. We set the contents of various
3395 dynamic sections here. */
3396
b34976b6 3397static bfd_boolean
4dfe6ac6
NC
3398elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3399 struct bfd_link_info *info,
3400 struct elf_link_hash_entry *h,
3401 Elf_Internal_Sym *sym)
a85d7ed0 3402{
0451c93c 3403 struct elf_s390_link_hash_table *htab;
470b557a 3404 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3405
0451c93c 3406 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
3407 if (htab == NULL)
3408 return FALSE;
a85d7ed0
NC
3409
3410 if (h->plt.offset != (bfd_vma) -1)
3411 {
a85d7ed0 3412 bfd_vma plt_index;
0451c93c
MS
3413 bfd_vma got_offset;
3414 Elf_Internal_Rela rela;
947216bf 3415 bfd_byte *loc;
a85d7ed0
NC
3416
3417 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3418 it up. */
470b557a
AK
3419 if (s390_is_ifunc_symbol_p (h))
3420 {
3421 /* If we can resolve the IFUNC symbol locally we generate an
3422 IRELATIVE reloc. */
3423 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3424 eh->ifunc_resolver_address +
3425 eh->ifunc_resolver_section->output_offset +
3426 eh->ifunc_resolver_section->output_section->vma);
3427 ;
3428 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3429 symbols is below. */
3430 }
3431 else
3432 {
3433 if (h->dynindx == -1
3434 || htab->elf.splt == NULL
3435 || htab->elf.sgotplt == NULL
3436 || htab->elf.srelplt == NULL)
3437 abort ();
a85d7ed0 3438
470b557a
AK
3439 /* Calc. index no.
3440 Current offset - size first entry / entry size. */
3441 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3442
470b557a
AK
3443 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3444 addr & GOT addr. */
3445 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3446
470b557a
AK
3447 /* Fill in the blueprint of a PLT. */
3448 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3449 PLT_ENTRY_SIZE);
3450
3451 /* Fixup the relative address to the GOT entry */
3452 bfd_put_32 (output_bfd,
3453 (htab->elf.sgotplt->output_section->vma +
3454 htab->elf.sgotplt->output_offset + got_offset
3455 - (htab->elf.splt->output_section->vma +
3456 htab->elf.splt->output_offset +
3457 h->plt.offset))/2,
3458 htab->elf.splt->contents + h->plt.offset + 2);
3459 /* Fixup the relative branch to PLT 0 */
3460 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3461 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3462 htab->elf.splt->contents + h->plt.offset + 24);
3463 /* Fixup offset into .rela.plt section. */
3464 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3465 htab->elf.splt->contents + h->plt.offset + 28);
3466
3467 /* Fill in the entry in the global offset table.
3468 Points to instruction after GOT offset. */
3469 bfd_put_64 (output_bfd,
3470 (htab->elf.splt->output_section->vma
3471 + htab->elf.splt->output_offset
3472 + h->plt.offset
3473 + 14),
3474 htab->elf.sgotplt->contents + got_offset);
3475
3476 /* Fill in the entry in the .rela.plt section. */
3477 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3478 + htab->elf.sgotplt->output_offset
3479 + got_offset);
3480 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3481 rela.r_addend = 0;
3482 loc = htab->elf.srelplt->contents + plt_index *
3483 sizeof (Elf64_External_Rela);
3484 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3485
3486 if (!h->def_regular)
3487 {
3488 /* Mark the symbol as undefined, rather than as defined in
3489 the .plt section. Leave the value alone. This is a clue
3490 for the dynamic linker, to make function pointer
3491 comparisons work between an application and shared
3492 library. */
3493 sym->st_shndx = SHN_UNDEF;
3494 }
a85d7ed0
NC
3495 }
3496 }
3497
69fc87f1
MS
3498 if (h->got.offset != (bfd_vma) -1
3499 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3500 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3501 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3502 {
a85d7ed0 3503 Elf_Internal_Rela rela;
947216bf 3504 bfd_byte *loc;
a85d7ed0
NC
3505
3506 /* This symbol has an entry in the global offset table. Set it
947216bf 3507 up. */
f41345a7 3508 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3509 abort ();
a85d7ed0 3510
f41345a7
AK
3511 rela.r_offset = (htab->elf.sgot->output_section->vma
3512 + htab->elf.sgot->output_offset
dc810e39 3513 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3514
470b557a
AK
3515 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3516 {
0e1862bb 3517 if (bfd_link_pic (info))
470b557a
AK
3518 {
3519 /* An explicit GOT slot usage needs GLOB_DAT. If the
3520 symbol references local the implicit got.iplt slot
3521 will be used and the IRELATIVE reloc has been created
3522 above. */
3523 goto do_glob_dat;
3524 }
3525 else
3526 {
3527 /* For non-shared objects explicit GOT slots must be
3528 filled with the PLT slot address for pointer
3529 equality reasons. */
3530 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3531 + htab->elf.iplt->output_offset
3532 + h->plt.offset),
3533 htab->elf.sgot->contents + h->got.offset);
3534 return TRUE;
3535 }
3536 }
0e1862bb 3537 else if (bfd_link_pic (info)
8c21ca21 3538 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3539 {
470b557a
AK
3540 /* If this is a static link, or it is a -Bsymbolic link and
3541 the symbol is defined locally or was forced to be local
3542 because of a version file, we just want to emit a
3543 RELATIVE reloc. The entry in the global offset table
3544 will already have been initialized in the
3545 relocate_section function. */
8c21ca21
AK
3546 if (!h->def_regular)
3547 return FALSE;
0451c93c 3548 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM
3549 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3550 rela.r_addend = (h->root.u.def.value
3551 + h->root.u.def.section->output_section->vma
3552 + h->root.u.def.section->output_offset);
3553 }
a85d7ed0
NC
3554 else
3555 {
3556 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3557do_glob_dat:
f41345a7 3558 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3559 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM
3560 rela.r_addend = 0;
3561 }
a85d7ed0 3562
f41345a7
AK
3563 loc = htab->elf.srelgot->contents;
3564 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3565 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC
3566 }
3567
f5385ebf 3568 if (h->needs_copy)
a85d7ed0 3569 {
a85d7ed0 3570 Elf_Internal_Rela rela;
947216bf 3571 bfd_byte *loc;
a85d7ed0
NC
3572
3573 /* This symbols needs a copy reloc. Set it up. */
3574
0451c93c
MS
3575 if (h->dynindx == -1
3576 || (h->root.type != bfd_link_hash_defined
3577 && h->root.type != bfd_link_hash_defweak)
3578 || htab->srelbss == NULL)
3579 abort ();
a85d7ed0
NC
3580
3581 rela.r_offset = (h->root.u.def.value
3582 + h->root.u.def.section->output_section->vma
3583 + h->root.u.def.section->output_offset);
3584 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3585 rela.r_addend = 0;
947216bf
AM
3586 loc = htab->srelbss->contents;
3587 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3588 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC
3589 }
3590
3591 /* Mark some specially defined symbols as absolute. */
9637f6ef 3592 if (h == htab->elf.hdynamic
22edb2f1
RS
3593 || h == htab->elf.hgot
3594 || h == htab->elf.hplt)
a85d7ed0
NC
3595 sym->st_shndx = SHN_ABS;
3596
b34976b6 3597 return TRUE;
a85d7ed0
NC
3598}
3599
0451c93c
MS
3600/* Used to decide how to sort relocs in an optimal manner for the
3601 dynamic linker, before writing them out. */
3602
3603static enum elf_reloc_type_class
7e612e98
AM
3604elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3605 const asection *rel_sec ATTRIBUTE_UNUSED,
3606 const Elf_Internal_Rela *rela)
0451c93c
MS
3607{
3608 switch ((int) ELF64_R_TYPE (rela->r_info))
3609 {
3610 case R_390_RELATIVE:
3611 return reloc_class_relative;
3612 case R_390_JMP_SLOT:
3613 return reloc_class_plt;
3614 case R_390_COPY:
3615 return reloc_class_copy;
3616 default:
3617 return reloc_class_normal;
3618 }
3619}
3620
a85d7ed0
NC
3621/* Finish up the dynamic sections. */
3622
b34976b6 3623static bfd_boolean
4dfe6ac6
NC
3624elf_s390_finish_dynamic_sections (bfd *output_bfd,
3625 struct bfd_link_info *info)
a85d7ed0 3626{
0451c93c 3627 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
3628 bfd *dynobj;
3629 asection *sdyn;
470b557a
AK
3630 bfd *ibfd;
3631 unsigned int i;
a85d7ed0 3632
0451c93c 3633 htab = elf_s390_hash_table (info);
4dfe6ac6
NC
3634 if (htab == NULL)
3635 return FALSE;
3636
0451c93c 3637 dynobj = htab->elf.dynobj;
3d4d4302 3638 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3639
0451c93c 3640 if (htab->elf.dynamic_sections_created)
a85d7ed0 3641 {
a85d7ed0
NC
3642 Elf64_External_Dyn *dyncon, *dynconend;
3643
f41345a7 3644 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3645 abort ();
a85d7ed0
NC
3646
3647 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3648 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC
3649 for (; dyncon < dynconend; dyncon++)
3650 {
3651 Elf_Internal_Dyn dyn;
a85d7ed0 3652 asection *s;
ec338859 3653
a85d7ed0 3654 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3655
a85d7ed0
NC
3656 switch (dyn.d_tag)
3657 {
3658 default:
0451c93c 3659 continue;
ec338859 3660
a85d7ed0 3661 case DT_PLTGOT:
f41345a7 3662 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3663 break;
ec338859 3664
a85d7ed0 3665 case DT_JMPREL:
f41345a7 3666 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0 3667 break;
ec338859 3668
a85d7ed0 3669 case DT_PLTRELSZ:
f41345a7 3670 s = htab->elf.srelplt->output_section;
eea6121a 3671 dyn.d_un.d_val = s->size;
a85d7ed0 3672 break;
ec338859 3673
a85d7ed0
NC
3674 case DT_RELASZ:
3675 /* The procedure linkage table relocs (DT_JMPREL) should
3676 not be included in the overall relocs (DT_RELA).
3677 Therefore, we override the DT_RELASZ entry here to
3678 make it not include the JMPREL relocs. Since the
3679 linker script arranges for .rela.plt to follow all
3680 other relocation sections, we don't have to worry
3681 about changing the DT_RELA entry. */
f41345a7 3682 s = htab->elf.srelplt->output_section;
eea6121a 3683 dyn.d_un.d_val -= s->size;
a85d7ed0
NC
3684 break;
3685 }
0451c93c
MS
3686
3687 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC
3688 }
3689
3690 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3691 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC
3692 {
3693 /* fill in blueprint for plt 0 entry */
f41345a7 3694 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3695 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC
3696 /* Fixup relative address to start of GOT */
3697 bfd_put_32 (output_bfd,
f41345a7
AK
3698 (htab->elf.sgotplt->output_section->vma +
3699 htab->elf.sgotplt->output_offset
3700 - htab->elf.splt->output_section->vma - 6)/2,
3701 htab->elf.splt->contents + 8);
a85d7ed0 3702 }
387f8054
MR
3703 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3704 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3705 = PLT_ENTRY_SIZE;
a85d7ed0
NC
3706 }
3707
f41345a7 3708 if (htab->elf.sgotplt)
a85d7ed0 3709 {
0451c93c 3710 /* Fill in the first three entries in the global offset table. */
f41345a7 3711 if (htab->elf.sgotplt->size > 0)
0451c93c
MS
3712 {
3713 bfd_put_64 (output_bfd,
3714 (sdyn == NULL ? (bfd_vma) 0
3715 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3716 htab->elf.sgotplt->contents);
0451c93c 3717 /* One entry for shared object struct ptr. */
f41345a7 3718 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3719 /* One entry for _dl_runtime_resolve. */
f41345a7 3720 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
0451c93c 3721 }
a85d7ed0 3722
f41345a7 3723 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS
3724 ->this_hdr.sh_entsize = 8;
3725 }
470b557a
AK
3726
3727 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3728 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK
3729 {
3730 struct plt_entry *local_plt;
3731 Elf_Internal_Sym *isym;
3732 Elf_Internal_Shdr *symtab_hdr;
3733
3734 symtab_hdr = &elf_symtab_hdr (ibfd);
3735
3736 local_plt = elf_s390_local_plt (ibfd);
3737 if (local_plt != NULL)
3738 for (i = 0; i < symtab_hdr->sh_info; i++)
3739 {
3740 if (local_plt[i].plt.offset != (bfd_vma) -1)
3741 {
3742 asection *sec = local_plt[i].sec;
3743 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3744 if (isym == NULL)
3745 return FALSE;
3746
3747 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3748 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3749 local_plt[i].plt.offset,
3750 isym->st_value
3751 + sec->output_section->vma
3752 + sec->output_offset);
3753
3754 }
3755 }
3756 }
3757
b34976b6 3758 return TRUE;
a85d7ed0
NC
3759}
3760
4c45e5c9
JJ
3761/* Return address for Ith PLT stub in section PLT, for relocation REL
3762 or (bfd_vma) -1 if it should not be included. */
3763
3764static bfd_vma
3765elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3766 const arelent *rel ATTRIBUTE_UNUSED)
3767{
3768 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3769}
3770
643f7afb
AK
3771/* Merge backend specific data from an object file to the output
3772 object file when linking. */
3773
3774static bfd_boolean
3775elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3776{
3777 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3778 return TRUE;
3779
3780 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
3781 return FALSE;
3782
3783 return TRUE;
3784}
3785
ae9a127f
NC
3786/* Why was the hash table entry size definition changed from
3787 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3788 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC
3789
3790const struct elf_size_info s390_elf64_size_info =
3791{
3792 sizeof (Elf64_External_Ehdr),
3793 sizeof (Elf64_External_Phdr),
3794 sizeof (Elf64_External_Shdr),
3795 sizeof (Elf64_External_Rel),
3796 sizeof (Elf64_External_Rela),
3797 sizeof (Elf64_External_Sym),
3798 sizeof (Elf64_External_Dyn),
3799 sizeof (Elf_External_Note),
ae9a127f
NC
3800 8, /* hash-table entry size. */
3801 1, /* internal relocations per external relocations. */
3802 64, /* arch_size. */
45d6a902 3803 3, /* log_file_align. */
a85d7ed0
NC
3804 ELFCLASS64, EV_CURRENT,
3805 bfd_elf64_write_out_phdrs,
3806 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3807 bfd_elf64_checksum_contents,
a85d7ed0 3808 bfd_elf64_write_relocs,
73ff0d56 3809 bfd_elf64_swap_symbol_in,
a85d7ed0
NC
3810 bfd_elf64_swap_symbol_out,
3811 bfd_elf64_slurp_reloc_table,
3812 bfd_elf64_slurp_symbol_table,
3813 bfd_elf64_swap_dyn_in,
3814 bfd_elf64_swap_dyn_out,
947216bf
AM
3815 bfd_elf64_swap_reloc_in,
3816 bfd_elf64_swap_reloc_out,
3817 bfd_elf64_swap_reloca_in,
3818 bfd_elf64_swap_reloca_out
a85d7ed0
NC
3819};
3820
6d00b590 3821#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC
3822#define TARGET_BIG_NAME "elf64-s390"
3823#define ELF_ARCH bfd_arch_s390
ae95ffa6 3824#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC
3825#define ELF_MACHINE_CODE EM_S390
3826#define ELF_MACHINE_ALT1 EM_S390_OLD
3827#define ELF_MAXPAGESIZE 0x1000
3828
3829#define elf_backend_size_info s390_elf64_size_info
3830
3831#define elf_backend_can_gc_sections 1
51b64d56 3832#define elf_backend_can_refcount 1
a85d7ed0
NC
3833#define elf_backend_want_got_plt 1
3834#define elf_backend_plt_readonly 1
3835#define elf_backend_want_plt_sym 0
3836#define elf_backend_got_header_size 24
b491616a 3837#define elf_backend_rela_normal 1
a85d7ed0
NC
3838
3839#define elf_info_to_howto elf_s390_info_to_howto
3840
a85d7ed0
NC
3841#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3842#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3843#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
643f7afb
AK
3844#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3845#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC
3846
3847#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3848#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS
3849#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3850#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC
3851#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3852#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3853#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3854#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3855#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC
3856#define elf_backend_relocate_section elf_s390_relocate_section
3857#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3858#define elf_backend_init_index_section _bfd_elf_init_1_index_section
4c45e5c9 3859#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3860#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 3861#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 3862
69fc87f1
MS
3863#define bfd_elf64_mkobject elf_s390_mkobject
3864#define elf_backend_object_p elf_s390_object_p
a85d7ed0 3865
2c3fc389
NC
3866/* Enable ELF64 archive functions. */
3867#define bfd_elf64_archive_functions
3868extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3869extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3870
3871#define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3872#define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3873#define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3874#define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3875#define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3876#define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3877#define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3878#define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3879#define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3880
a85d7ed0 3881#include "elf64-target.h"