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bfd target vector rationalisation
[thirdparty/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
4b95cf5c 2 Copyright (C) 2000-2014 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 */
fb798c50 45 0, /* 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");
0451c93c 778 if (!info->shared)
3d4d4302 779 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 780
f41345a7 781 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0451c93c
MS		 782 || (!info->shared && !htab->srelbss))
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
MS		 858{
859 if (info->shared)
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
1049f94e 899 if (info->relocatable)
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:
1112 if (info->shared)
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:
1186 if (!info->shared)
1187 break;
1188 info->flags |= DF_STATIC_TLS;
1189 /* Fall through */
ec338859 1190
947216bf
AM		 1191 case R_390_8:
1192 case R_390_16:
a85d7ed0
NC		 1193 case R_390_32:
1194 case R_390_64:
fb798c50 1195 case R_390_PC12DBL:
947216bf
AM		 1196 case R_390_PC16:
1197 case R_390_PC16DBL:
fb798c50 1198 case R_390_PC24DBL:
a85d7ed0
NC		 1199 case R_390_PC32:
1200 case R_390_PC32DBL:
1201 case R_390_PC64:
470b557a 1202 if (h != NULL)
0451c93c
MS		 1203 {
1204 /* If this reloc is in a read-only section, we might
1205 need a copy reloc. We can't check reliably at this
1206 stage whether the section is read-only, as input
1207 sections have not yet been mapped to output sections.
1208 Tentatively set the flag for now, and correct in
1209 adjust_dynamic_symbol. */
f5385ebf 1210 h->non_got_ref = 1;
ec338859 1211
470b557a
AK		 1212 if (!info->shared)
1213 {
1214 /* We may need a .plt entry if the function this reloc
1215 refers to is in a shared lib. */
1216 h->plt.refcount += 1;
1217 }
0451c93c 1218 }
ec338859 1219
a85d7ed0 1220 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1221 against a global symbol, or a non PC relative reloc
1222 against a local symbol, then we need to copy the reloc
1223 into the shared library. However, if we are linking with
1224 -Bsymbolic, we do not need to copy a reloc against a
1225 global symbol which is defined in an object we are
1226 including in the link (i.e., DEF_REGULAR is set). At
1227 this point we have not seen all the input files, so it is
1228 possible that DEF_REGULAR is not set now but will be set
1229 later (it is never cleared). In case of a weak definition,
1230 DEF_REGULAR may be cleared later by a strong definition in
1231 a shared library. We account for that possibility below by
1232 storing information in the relocs_copied field of the hash
1233 table entry. A similar situation occurs when creating
1234 shared libraries and symbol visibility changes render the
1235 symbol local.
1236
1237 If on the other hand, we are creating an executable, we
1238 may need to keep relocations for symbols satisfied by a
1239 dynamic library if we manage to avoid copy relocs for the
1240 symbol. */
1241 if ((info->shared
1242 && (sec->flags & SEC_ALLOC) != 0
1243 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1244 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1245 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1246 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1247 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1248 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1249 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1250 || (h != NULL
8c21ca21 1251 && (! SYMBOLIC_BIND (info, h)
0451c93c 1252 || h->root.type == bfd_link_hash_defweak
f5385ebf 1253 || !h->def_regular))))
64285810
MS		 1254 || (ELIMINATE_COPY_RELOCS
1255 && !info->shared
0451c93c
MS		 1256 && (sec->flags & SEC_ALLOC) != 0
1257 && h != NULL
1258 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1259 || !h->def_regular)))
a85d7ed0 1260 {
00d8c7a9
AK		 1261 struct elf_dyn_relocs *p;
1262 struct elf_dyn_relocs **head;
ec338859 1263
0451c93c
MS		 1264 /* We must copy these reloc types into the output file.
1265 Create a reloc section in dynobj and make room for
1266 this reloc. */
a85d7ed0
NC		 1267 if (sreloc == NULL)
1268 {
440e9cd2
AK		 1269 if (htab->elf.dynobj == NULL)
1270 htab->elf.dynobj = abfd;
1271
83bac4b0
NC		 1272 sreloc = _bfd_elf_make_dynamic_reloc_section
1273 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1274
a85d7ed0 1275 if (sreloc == NULL)
83bac4b0 1276 return FALSE;
a85d7ed0 1277 }
ec338859 1278
0451c93c
MS		 1279 /* If this is a global symbol, we count the number of
1280 relocations we need for this symbol. */
1281 if (h != NULL)
a85d7ed0 1282 {
ec338859 1283 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1284 }
1285 else
1286 {
ec338859
AM		 1287 /* Track dynamic relocs needed for local syms too.
1288 We really need local syms available to do this
1289 easily. Oh well. */
ec338859 1290 asection *s;
6edfbbad
DJ		 1291 void *vpp;
1292
87d72d41
AM		 1293 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1294 abfd, r_symndx);
1295 if (isym == NULL)
b34976b6 1296 return FALSE;
ec338859 1297
87d72d41
AM		 1298 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1299 if (s == NULL)
1300 s = sec;
1301
6edfbbad 1302 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1303 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1304 }
1305
1306 p = *head;
1307 if (p == NULL || p->sec != sec)
1308 {
1309 bfd_size_type amt = sizeof *p;
00d8c7a9 1310 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1311 bfd_alloc (htab->elf.dynobj, amt));
1312 if (p == NULL)
b34976b6 1313 return FALSE;
ec338859
AM		 1314 p->next = *head;
1315 *head = p;
1316 p->sec = sec;
1317 p->count = 0;
1318 p->pc_count = 0;
a85d7ed0 1319 }
ec338859
AM		 1320
1321 p->count += 1;
1322 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1323 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1324 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1325 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1326 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1327 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1328 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1329 p->pc_count += 1;
a85d7ed0 1330 }
a85d7ed0 1331 break;
ec338859 1332
a85d7ed0
NC		 1333 /* This relocation describes the C++ object vtable hierarchy.
1334 Reconstruct it for later use during GC. */
947216bf 1335 case R_390_GNU_VTINHERIT:
c152c796 1336 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1337 return FALSE;
947216bf 1338 break;
ec338859 1339
a85d7ed0
NC		 1340 /* This relocation describes which C++ vtable entries are actually
1341 used. Record for later use during GC. */
947216bf 1342 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1343 BFD_ASSERT (h != NULL);
1344 if (h != NULL
1345 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1346 return FALSE;
947216bf 1347 break;
ec338859 1348
a85d7ed0
NC		 1349 default:
1350 break;
1351 }
1352 }
1353
b34976b6 1354 return TRUE;
a85d7ed0
NC		 1355}
1356
1357/* Return the section that should be marked against GC for a given
1358 relocation. */
1359
1360static asection *
07adf181
AM		 1361elf_s390_gc_mark_hook (asection *sec,
1362 struct bfd_link_info *info,
1363 Elf_Internal_Rela *rel,
1364 struct elf_link_hash_entry *h,
1365 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1366{
1367 if (h != NULL)
07adf181
AM		 1368 switch (ELF64_R_TYPE (rel->r_info))
1369 {
1370 case R_390_GNU_VTINHERIT:
1371 case R_390_GNU_VTENTRY:
1372 return NULL;
1373 }
1374
1375 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1376}
1377
1378/* Update the got entry reference counts for the section being removed. */
1379
b34976b6 1380static bfd_boolean
07adf181
AM		 1381elf_s390_gc_sweep_hook (bfd *abfd,
1382 struct bfd_link_info *info,
1383 asection *sec,
1384 const Elf_Internal_Rela *relocs)
a85d7ed0 1385{
4dfe6ac6 1386 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1387 Elf_Internal_Shdr *symtab_hdr;
1388 struct elf_link_hash_entry **sym_hashes;
1389 bfd_signed_vma *local_got_refcounts;
1390 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1391
7dda2462
TG		 1392 if (info->relocatable)
1393 return TRUE;
1394
4dfe6ac6
NC		 1395 htab = elf_s390_hash_table (info);
1396 if (htab == NULL)
1397 return FALSE;
1398
ec338859 1399 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1400
0ffa91dd 1401 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1402 sym_hashes = elf_sym_hashes (abfd);
1403 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1404
1405 relend = relocs + sec->reloc_count;
1406 for (rel = relocs; rel < relend; rel++)
5236c819 1407 {
26e41594
AM		 1408 unsigned long r_symndx;
1409 unsigned int r_type;
1410 struct elf_link_hash_entry *h = NULL;
1411
5236c819 1412 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1413 if (r_symndx >= symtab_hdr->sh_info)
1414 {
1415 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1416 struct elf_dyn_relocs **pp;
1417 struct elf_dyn_relocs *p;
5236c819 1418
26e41594 1419 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1420 while (h->root.type == bfd_link_hash_indirect
1421 || h->root.type == bfd_link_hash_warning)
1422 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1423 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1424
26e41594
AM		 1425 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1426 if (p->sec == sec)
1427 {
1428 /* Everything must go for SEC. */
1429 *pp = p->next;
1430 break;
1431 }
1432 }
470b557a
AK		 1433 else
1434 {
1435 Elf_Internal_Sym *isym;
1436
1437 /* A local symbol. */
1438 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1439 abfd, r_symndx);
1440 if (isym == NULL)
1441 return FALSE;
1442
1443 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1444 {
1445 struct plt_entry *plt = elf_s390_local_plt (abfd);
1446 if (plt[r_symndx].plt.refcount > 0)
1447 plt[r_symndx].plt.refcount--;
1448 }
1449 }
26e41594
AM		 1450
1451 r_type = ELF64_R_TYPE (rel->r_info);
1452 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1453 switch (r_type)
5236c819 1454 {
69fc87f1 1455 case R_390_TLS_LDM64:
4dfe6ac6
NC		 1456 if (htab->tls_ldm_got.refcount > 0)
1457 htab->tls_ldm_got.refcount -= 1;
69fc87f1
MS		 1458 break;
1459
1460 case R_390_TLS_GD64:
1461 case R_390_TLS_IE64:
1462 case R_390_TLS_GOTIE12:
bd1ea41b 1463 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1464 case R_390_TLS_GOTIE64:
1465 case R_390_TLS_IEENT:
5236c819
MS		 1466 case R_390_GOT12:
1467 case R_390_GOT16:
bd1ea41b 1468 case R_390_GOT20:
5236c819
MS		 1469 case R_390_GOT32:
1470 case R_390_GOT64:
1471 case R_390_GOTOFF16:
1472 case R_390_GOTOFF32:
1473 case R_390_GOTOFF64:
1474 case R_390_GOTPC:
1475 case R_390_GOTPCDBL:
1476 case R_390_GOTENT:
1477 if (h != NULL)
1478 {
1479 if (h->got.refcount > 0)
1480 h->got.refcount -= 1;
1481 }
1482 else if (local_got_refcounts != NULL)
1483 {
1484 if (local_got_refcounts[r_symndx] > 0)
1485 local_got_refcounts[r_symndx] -= 1;
1486 }
26e41594 1487 break;
a85d7ed0 1488
5236c819
MS		 1489 case R_390_8:
1490 case R_390_12:
1491 case R_390_16:
bd1ea41b 1492 case R_390_20:
5236c819
MS		 1493 case R_390_32:
1494 case R_390_64:
1495 case R_390_PC16:
fb798c50 1496 case R_390_PC12DBL:
5236c819 1497 case R_390_PC16DBL:
fb798c50 1498 case R_390_PC24DBL:
5236c819
MS		 1499 case R_390_PC32:
1500 case R_390_PC32DBL:
1501 case R_390_PC64:
26e41594
AM		 1502 if (info->shared)
1503 break;
1504 /* Fall through */
a85d7ed0 1505
fb798c50 1506 case R_390_PLT12DBL:
69fc87f1 1507 case R_390_PLT16DBL:
fb798c50 1508 case R_390_PLT24DBL:
69fc87f1
MS		 1509 case R_390_PLT32:
1510 case R_390_PLT32DBL:
1511 case R_390_PLT64:
1512 case R_390_PLTOFF16:
1513 case R_390_PLTOFF32:
1514 case R_390_PLTOFF64:
1515 if (h != NULL)
1516 {
1517 if (h->plt.refcount > 0)
1518 h->plt.refcount -= 1;
1519 }
1520 break;
1521
1522 case R_390_GOTPLT12:
1523 case R_390_GOTPLT16:
bd1ea41b 1524 case R_390_GOTPLT20:
69fc87f1
MS		 1525 case R_390_GOTPLT32:
1526 case R_390_GOTPLT64:
1527 case R_390_GOTPLTENT:
1528 if (h != NULL)
1529 {
1530 if (h->plt.refcount > 0)
1531 {
1532 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1533 h->plt.refcount -= 1;
1534 }
1535 }
1536 else if (local_got_refcounts != NULL)
1537 {
1538 if (local_got_refcounts[r_symndx] > 0)
1539 local_got_refcounts[r_symndx] -= 1;
1540 }
1541 break;
1542
5236c819
MS		 1543 default:
1544 break;
1545 }
1546 }
a85d7ed0 1547
b34976b6 1548 return TRUE;
a85d7ed0
NC		 1549}
1550
5236c819
MS		 1551/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1552 entry but we found we will not create any. Called when we find we will
1553 not have any PLT for this symbol, by for example
1554 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1555 or elf_s390_size_dynamic_sections if no dynamic sections will be
1556 created (we're only linking static objects). */
1557
1558static void
2c3fc389 1559elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1560{
1561 if (h->elf.root.type == bfd_link_hash_warning)
1562 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1563
1564 if (h->gotplt_refcount <= 0)
1565 return;
1566
1567 /* We simply add the number of gotplt references to the number
1568 * of got references for this symbol. */
1569 h->elf.got.refcount += h->gotplt_refcount;
1570 h->gotplt_refcount = -1;
1571}
1572
a85d7ed0
NC		 1573/* Adjust a symbol defined by a dynamic object and referenced by a
1574 regular object. The current definition is in some section of the
1575 dynamic object, but we're not including those sections. We have to
1576 change the definition to something the rest of the link can
1577 understand. */
1578
b34976b6 1579static bfd_boolean
4dfe6ac6
NC		 1580elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1581 struct elf_link_hash_entry *h)
a85d7ed0 1582{
0451c93c 1583 struct elf_s390_link_hash_table *htab;
a85d7ed0 1584 asection *s;
a85d7ed0 1585
470b557a
AK		 1586 /* STT_GNU_IFUNC symbol must go through PLT. */
1587 if (s390_is_ifunc_symbol_p (h))
1588 return TRUE;
1589
a85d7ed0
NC		 1590 /* If this is a function, put it in the procedure linkage table. We
1591 will fill in the contents of the procedure linkage table later
cedb70c5 1592 (although we could actually do it here). */
a85d7ed0 1593 if (h->type == STT_FUNC
f5385ebf 1594 || h->needs_plt)
a85d7ed0 1595 {
0451c93c 1596 if (h->plt.refcount <= 0
8c21ca21
AK		 1597 || SYMBOL_CALLS_LOCAL (info, h)
1598 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1599 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1600 {
1601 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1602 file, but the symbol was never referred to by a dynamic
1603 object, or if all references were garbage collected. In
0451c93c
MS		 1604 such a case, we don't actually need to build a procedure
1605 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1606 h->plt.offset = (bfd_vma) -1;
f5385ebf 1607 h->needs_plt = 0;
5236c819 1608 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1609 }
1610
b34976b6 1611 return TRUE;
a85d7ed0 1612 }
bbd7ec4a 1613 else
0451c93c
MS		 1614 /* It's possible that we incorrectly decided a .plt reloc was
1615 needed for an R_390_PC32 reloc to a non-function sym in
1616 check_relocs. We can't decide accurately between function and
1617 non-function syms in check-relocs; Objects loaded later in
1618 the link may change h->type. So fix it now. */
bbd7ec4a 1619 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1620
1621 /* If this is a weak symbol, and there is a real definition, the
1622 processor independent code will have arranged for us to see the
1623 real definition first, and we can just use the same value. */
f6e332e6 1624 if (h->u.weakdef != NULL)
a85d7ed0 1625 {
f6e332e6
AM		 1626 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1627 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1628 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1629 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1630 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1631 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1632 return TRUE;
a85d7ed0
NC		 1633 }
1634
1635 /* This is a reference to a symbol defined by a dynamic object which
1636 is not a function. */
1637
1638 /* If we are creating a shared library, we must presume that the
1639 only references to the symbol are via the global offset table.
1640 For such cases we need not do anything here; the relocations will
1641 be handled correctly by relocate_section. */
1642 if (info->shared)
b34976b6 1643 return TRUE;
a85d7ed0
NC		 1644
1645 /* If there are no references to this symbol that do not use the
1646 GOT, we don't need to generate a copy reloc. */
f5385ebf 1647 if (!h->non_got_ref)
b34976b6 1648 return TRUE;
a85d7ed0 1649
0451c93c
MS		 1650 /* If -z nocopyreloc was given, we won't generate them either. */
1651 if (info->nocopyreloc)
1652 {
f5385ebf 1653 h->non_got_ref = 0;
b34976b6 1654 return TRUE;
0451c93c
MS		 1655 }
1656
64285810 1657 if (ELIMINATE_COPY_RELOCS)
0451c93c 1658 {
64285810 1659 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1660 struct elf_dyn_relocs *p;
0451c93c 1661
64285810
MS		 1662 eh = (struct elf_s390_link_hash_entry *) h;
1663 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1664 {
1665 s = p->sec->output_section;
1666 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1667 break;
1668 }
1669
1670 /* If we didn't find any dynamic relocs in read-only sections, then
1671 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1672 if (p == NULL)
1673 {
f5385ebf 1674 h->non_got_ref = 0;
64285810
MS		 1675 return TRUE;
1676 }
0451c93c
MS		 1677 }
1678
a85d7ed0
NC		 1679 /* We must allocate the symbol in our .dynbss section, which will
1680 become part of the .bss section of the executable. There will be
1681 an entry for this symbol in the .dynsym section. The dynamic
1682 object will contain position independent code, so all references
1683 from the dynamic object to this symbol will go through the global
1684 offset table. The dynamic linker will use the .dynsym entry to
1685 determine the address it must put in the global offset table, so
1686 both the dynamic object and the regular object will refer to the
1687 same memory location for the variable. */
1688
0451c93c 1689 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1690 if (htab == NULL)
1691 return FALSE;
a85d7ed0 1692
0451c93c
MS		 1693 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1694 copy the initial value out of the dynamic object and into the
1695 runtime process image. */
1d7e9d18 1696 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1697 {
eea6121a 1698 htab->srelbss->size += sizeof (Elf64_External_Rela);
f5385ebf 1699 h->needs_copy = 1;
a85d7ed0
NC		 1700 }
1701
0451c93c 1702 s = htab->sdynbss;
a85d7ed0 1703
027297b7 1704 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC		 1705}
1706
0451c93c
MS		 1707/* Allocate space in .plt, .got and associated reloc sections for
1708 dynamic relocs. */
1709
b34976b6 1710static bfd_boolean
4dfe6ac6
NC		 1711allocate_dynrelocs (struct elf_link_hash_entry *h,
1712 void * inf)
0451c93c
MS		 1713{
1714 struct bfd_link_info *info;
1715 struct elf_s390_link_hash_table *htab;
470b557a 1716 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1717 struct elf_dyn_relocs *p;
0451c93c 1718
e92d460e 1719 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1720 return TRUE;
0451c93c
MS		 1721
1722 info = (struct bfd_link_info *) inf;
1723 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1724 if (htab == NULL)
1725 return FALSE;
0451c93c 1726
470b557a
AK		 1727 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1728 here if it is defined and referenced in a non-shared object. */
1729 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1730 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1731 &eh->dyn_relocs);
1732 else if (htab->elf.dynamic_sections_created
1733 && h->plt.refcount > 0)
0451c93c
MS		 1734 {
1735 /* Make sure this symbol is output as a dynamic symbol.
1736 Undefined weak syms won't yet be marked as dynamic. */
1737 if (h->dynindx == -1
f5385ebf 1738 && !h->forced_local)
0451c93c 1739 {
c152c796 1740 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1741 return FALSE;
0451c93c
MS		 1742 }
1743
82058a73 1744 if (info->shared
4ec72bde 1745 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1746 {
f41345a7 1747 asection *s = htab->elf.splt;
0451c93c
MS		 1748
1749 /* If this is the first .plt entry, make room for the special
1750 first entry. */
eea6121a
AM		 1751 if (s->size == 0)
1752 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1753
eea6121a 1754 h->plt.offset = s->size;
0451c93c
MS		 1755
1756 /* If this symbol is not defined in a regular file, and we are
1757 not generating a shared library, then set the symbol to this
1758 location in the .plt. This is required to make function
1759 pointers compare as equal between the normal executable and
1760 the shared library. */
1761 if (! info->shared
f5385ebf 1762 && !h->def_regular)
0451c93c
MS		 1763 {
1764 h->root.u.def.section = s;
1765 h->root.u.def.value = h->plt.offset;
1766 }
ec338859 1767
0451c93c 1768 /* Make room for this entry. */
eea6121a 1769 s->size += PLT_ENTRY_SIZE;
ec338859 1770
0451c93c
MS		 1771 /* We also need to make an entry in the .got.plt section, which
1772 will be placed in the .got section by the linker script. */
f41345a7 1773 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1774
1775 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1776 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1777 }
1778 else
1779 {
1780 h->plt.offset = (bfd_vma) -1;
f5385ebf 1781 h->needs_plt = 0;
5236c819 1782 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1783 }
1784 }
1785 else
1786 {
1787 h->plt.offset = (bfd_vma) -1;
f5385ebf 1788 h->needs_plt = 0;
5236c819 1789 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1790 }
1791
69fc87f1
MS		 1792 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1793 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1794 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1795 we can save the dynamic TLS relocation. */
1796 if (h->got.refcount > 0
1797 && !info->shared
1798 && h->dynindx == -1
1799 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1800 {
1801 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1802 /* For the GOTIE access without a literal pool entry the offset has
1803 to be stored somewhere. The immediate value in the instruction
1804 is not bit enough so the value is stored in the got. */
1805 {
f41345a7
AK		 1806 h->got.offset = htab->elf.sgot->size;
1807 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1808 }
1809 else
1810 h->got.offset = (bfd_vma) -1;
1811 }
1812 else if (h->got.refcount > 0)
0451c93c
MS		 1813 {
1814 asection *s;
b34976b6 1815 bfd_boolean dyn;
69fc87f1 1816 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1817
1818 /* Make sure this symbol is output as a dynamic symbol.
1819 Undefined weak syms won't yet be marked as dynamic. */
1820 if (h->dynindx == -1
f5385ebf 1821 && !h->forced_local)
0451c93c 1822 {
c152c796 1823 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1824 return FALSE;
0451c93c
MS		 1825 }
1826
f41345a7 1827 s = htab->elf.sgot;
eea6121a
AM		 1828 h->got.offset = s->size;
1829 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1830 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1831 if (tls_type == GOT_TLS_GD)
eea6121a 1832 s->size += GOT_ENTRY_SIZE;
0451c93c 1833 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1834 /* R_390_TLS_IE64 needs one dynamic relocation,
1835 R_390_TLS_GD64 needs one if local symbol and two if global. */
1836 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1837 || tls_type >= GOT_TLS_IE)
f41345a7 1838 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1839 else if (tls_type == GOT_TLS_GD)
f41345a7 1840 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1841 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1842 || h->root.type != bfd_link_hash_undefweak)
1843 && (info->shared
1844 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1845 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1846 }
1847 else
1848 h->got.offset = (bfd_vma) -1;
1849
0451c93c 1850 if (eh->dyn_relocs == NULL)
b34976b6 1851 return TRUE;
0451c93c
MS		 1852
1853 /* In the shared -Bsymbolic case, discard space allocated for
1854 dynamic pc-relative relocs against symbols which turn out to be
1855 defined in regular objects. For the normal shared case, discard
1856 space for pc-relative relocs that have become local due to symbol
1857 visibility changes. */
1858
1859 if (info->shared)
1860 {
8c21ca21 1861 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1862 {
00d8c7a9 1863 struct elf_dyn_relocs **pp;
0451c93c
MS		 1864
1865 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1866 {
1867 p->count -= p->pc_count;
1868 p->pc_count = 0;
1869 if (p->count == 0)
1870 *pp = p->next;
1871 else
1872 pp = &p->next;
1873 }
1874 }
82058a73
MS		 1875
1876 /* Also discard relocs on undefined weak syms with non-default
1877 visibility. */
22d606e9 1878 if (eh->dyn_relocs != NULL
82058a73 1879 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1880 {
1881 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1882 eh->dyn_relocs = NULL;
1883
1884 /* Make sure undefined weak symbols are output as a dynamic
1885 symbol in PIEs. */
1886 else if (h->dynindx == -1
1887 && !h->forced_local)
1888 {
1889 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1890 return FALSE;
1891 }
1892 }
0451c93c 1893 }
64285810 1894 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1895 {
1896 /* For the non-shared case, discard space for relocs against
1897 symbols which turn out to need copy relocs or are not
1898 dynamic. */
1899
f5385ebf
AM		 1900 if (!h->non_got_ref
1901 && ((h->def_dynamic
1902 && !h->def_regular)
0451c93c
MS		 1903 || (htab->elf.dynamic_sections_created
1904 && (h->root.type == bfd_link_hash_undefweak
1905 || h->root.type == bfd_link_hash_undefined))))
1906 {
1907 /* Make sure this symbol is output as a dynamic symbol.
1908 Undefined weak syms won't yet be marked as dynamic. */
1909 if (h->dynindx == -1
f5385ebf 1910 && !h->forced_local)
0451c93c 1911 {
c152c796 1912 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1913 return FALSE;
0451c93c
MS		 1914 }
1915
1916 /* If that succeeded, we know we'll be keeping all the
1917 relocs. */
1918 if (h->dynindx != -1)
1919 goto keep;
1920 }
1921
1922 eh->dyn_relocs = NULL;
1923
ec338859 1924 keep: ;
0451c93c
MS		 1925 }
1926
1927 /* Finally, allocate space. */
1928 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1929 {
1930 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1931 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1932 }
1933
b34976b6 1934 return TRUE;
0451c93c
MS		 1935}
1936
1937/* Find any dynamic relocs that apply to read-only sections. */
1938
b34976b6 1939static bfd_boolean
2c3fc389 1940readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1941{
1942 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1943 struct elf_dyn_relocs *p;
0451c93c
MS		 1944
1945 eh = (struct elf_s390_link_hash_entry *) h;
1946 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1947 {
1948 asection *s = p->sec->output_section;
1949
1950 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1951 {
1952 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1953
1954 info->flags |= DF_TEXTREL;
1955
1956 /* Not an error, just cut short the traversal. */
b34976b6 1957 return FALSE;
0451c93c
MS		 1958 }
1959 }
b34976b6 1960 return TRUE;
0451c93c
MS		 1961}
1962
a85d7ed0
NC		 1963/* Set the sizes of the dynamic sections. */
1964
b34976b6 1965static bfd_boolean
4dfe6ac6
NC		 1966elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1967 struct bfd_link_info *info)
a85d7ed0 1968{
0451c93c 1969 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1970 bfd *dynobj;
1971 asection *s;
b34976b6 1972 bfd_boolean relocs;
0451c93c 1973 bfd *ibfd;
a85d7ed0 1974
0451c93c 1975 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1976 if (htab == NULL)
1977 return FALSE;
1978
0451c93c
MS		 1979 dynobj = htab->elf.dynobj;
1980 if (dynobj == NULL)
1981 abort ();
a85d7ed0 1982
0451c93c 1983 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1984 {
1985 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1986 if (info->executable)
a85d7ed0 1987 {
3d4d4302 1988 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1989 if (s == NULL)
1990 abort ();
eea6121a 1991 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1992 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1993 }
1994 }
a85d7ed0 1995
0451c93c
MS		 1996 /* Set up .got offsets for local syms, and space for local dynamic
1997 relocs. */
1998 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 1999 {
0451c93c
MS		 2000 bfd_signed_vma *local_got;
2001 bfd_signed_vma *end_local_got;
69fc87f1 2002 char *local_tls_type;
0451c93c
MS		 2003 bfd_size_type locsymcount;
2004 Elf_Internal_Shdr *symtab_hdr;
2005 asection *srela;
470b557a
AK		 2006 struct plt_entry *local_plt;
2007 unsigned int i;
a85d7ed0 2008
0ffa91dd 2009 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2010 continue;
2011
0451c93c 2012 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2013 {
00d8c7a9 2014 struct elf_dyn_relocs *p;
0451c93c 2015
6edfbbad 2016 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2017 {
ec338859
AM		 2018 if (!bfd_is_abs_section (p->sec)
2019 && bfd_is_abs_section (p->sec->output_section))
2020 {
2021 /* Input section has been discarded, either because
2022 it is a copy of a linkonce section or due to
2023 linker script /DISCARD/, so we'll be discarding
2024 the relocs too. */
2025 }
248866a8 2026 else if (p->count != 0)
ec338859
AM		 2027 {
2028 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2029 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 2030 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2031 info->flags |= DF_TEXTREL;
ec338859 2032 }
a85d7ed0
NC		 2033 }
2034 }
0451c93c
MS		 2035
2036 local_got = elf_local_got_refcounts (ibfd);
2037 if (!local_got)
2038 continue;
2039
0ffa91dd 2040 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2041 locsymcount = symtab_hdr->sh_info;
2042 end_local_got = local_got + locsymcount;
69fc87f1 2043 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2044 s = htab->elf.sgot;
2045 srela = htab->elf.srelgot;
69fc87f1 2046 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2047 {
0451c93c 2048 if (*local_got > 0)
a85d7ed0 2049 {
eea6121a
AM		 2050 *local_got = s->size;
2051 s->size += GOT_ENTRY_SIZE;
69fc87f1 2052 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2053 s->size += GOT_ENTRY_SIZE;
0451c93c 2054 if (info->shared)
eea6121a 2055 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2056 }
2057 else
0451c93c 2058 *local_got = (bfd_vma) -1;
a85d7ed0 2059 }
470b557a
AK		 2060
2061 local_plt = elf_s390_local_plt (ibfd);
2062 for (i = 0; i < symtab_hdr->sh_info; i++)
2063 {
2064 if (local_plt[i].plt.refcount > 0)
2065 {
2066 local_plt[i].plt.offset = htab->elf.iplt->size;
2067 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2068 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2069 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2070 }
2071 else
2072 local_plt[i].plt.offset = (bfd_vma) -1;
2073 }
0451c93c
MS		 2074 }
2075
69fc87f1
MS		 2076 if (htab->tls_ldm_got.refcount > 0)
2077 {
2078 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2079 relocs. */
f41345a7
AK		 2080 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2081 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2082 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2083 }
2084 else
2085 htab->tls_ldm_got.offset = -1;
2086
0451c93c
MS		 2087 /* Allocate global sym .plt and .got entries, and space for global
2088 sym dynamic relocs. */
2c3fc389 2089 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2090
2091 /* We now have determined the sizes of the various dynamic sections.
2092 Allocate memory for them. */
b34976b6 2093 relocs = FALSE;
0451c93c
MS		 2094 for (s = dynobj->sections; s != NULL; s = s->next)
2095 {
2096 if ((s->flags & SEC_LINKER_CREATED) == 0)
2097 continue;
2098
f41345a7
AK		 2099 if (s == htab->elf.splt
2100 || s == htab->elf.sgot
2101 || s == htab->elf.sgotplt
470b557a
AK		 2102 || s == htab->sdynbss
2103 || s == htab->elf.iplt
2104 || s == htab->elf.igotplt
2105 || s == htab->irelifunc)
0451c93c
MS		 2106 {
2107 /* Strip this section if we don't need it; see the
2108 comment below. */
2109 }
0112cd26 2110 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2111 {
f41345a7 2112 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2113 relocs = TRUE;
ec338859 2114
0451c93c
MS		 2115 /* We use the reloc_count field as a counter if we need
2116 to copy relocs into the output file. */
2117 s->reloc_count = 0;
2118 }
2119 else
a85d7ed0
NC		 2120 {
2121 /* It's not one of our sections, so don't allocate space. */
2122 continue;
2123 }
2124
eea6121a 2125 if (s->size == 0)
a85d7ed0 2126 {
0451c93c
MS		 2127 /* If we don't need this section, strip it from the
2128 output file. This is to handle .rela.bss and
2129 .rela.plt. We must create it in
2130 create_dynamic_sections, because it must be created
2131 before the linker maps input sections to output
2132 sections. The linker does that before
2133 adjust_dynamic_symbol is called, and it is that
2134 function which decides whether anything needs to go
2135 into these sections. */
2136
8423293d 2137 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2138 continue;
2139 }
2140
c456f082
AM		 2141 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2142 continue;
2143
0451c93c
MS		 2144 /* Allocate memory for the section contents. We use bfd_zalloc
2145 here in case unused entries are not reclaimed before the
2146 section's contents are written out. This should not happen,
2147 but this way if it does, we get a R_390_NONE reloc instead
2148 of garbage. */
eea6121a 2149 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2150 if (s->contents == NULL)
b34976b6 2151 return FALSE;
a85d7ed0
NC		 2152 }
2153
0451c93c 2154 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2155 {
2156 /* Add some entries to the .dynamic section. We fill in the
2157 values later, in elf_s390_finish_dynamic_sections, but we
2158 must add the entries now so that we get the correct size for
2159 the .dynamic section. The DT_DEBUG entry is filled in by the
2160 dynamic linker and used by the debugger. */
dc810e39 2161#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2162 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2163
36af4a4e 2164 if (info->executable)
a85d7ed0 2165 {
dc810e39 2166 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2167 return FALSE;
a85d7ed0
NC		 2168 }
2169
f41345a7 2170 if (htab->elf.splt->size != 0)
a85d7ed0 2171 {
dc810e39
AM		 2172 if (!add_dynamic_entry (DT_PLTGOT, 0)
2173 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2174 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2175 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2176 return FALSE;
a85d7ed0
NC		 2177 }
2178
2179 if (relocs)
947216bf
AM		 2180 {
2181 if (!add_dynamic_entry (DT_RELA, 0)
2182 || !add_dynamic_entry (DT_RELASZ, 0)
2183 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2184 return FALSE;
ec338859 2185
0451c93c
MS		 2186 /* If any dynamic relocs apply to a read-only section,
2187 then we need a DT_TEXTREL entry. */
248866a8
AM		 2188 if ((info->flags & DF_TEXTREL) == 0)
2189 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2190 info);
ec338859 2191
0451c93c
MS		 2192 if ((info->flags & DF_TEXTREL) != 0)
2193 {
2194 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2195 return FALSE;
0451c93c 2196 }
a85d7ed0
NC		 2197 }
2198 }
dc810e39 2199#undef add_dynamic_entry
a85d7ed0 2200
b34976b6 2201 return TRUE;
a85d7ed0
NC		 2202}
2203
69fc87f1
MS		 2204/* Return the base VMA address which should be subtracted from real addresses
2205 when resolving @dtpoff relocation.
2206 This is PT_TLS segment p_vaddr. */
2207
2208static bfd_vma
2c3fc389 2209dtpoff_base (struct bfd_link_info *info)
69fc87f1 2210{
e1918d23
AM		 2211 /* If tls_sec is NULL, we should have signalled an error already. */
2212 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2213 return 0;
e1918d23 2214 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2215}
2216
2217/* Return the relocation value for @tpoff relocation
2218 if STT_TLS virtual address is ADDRESS. */
2219
2220static bfd_vma
2c3fc389 2221tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2222{
e1918d23 2223 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2224
e1918d23
AM		 2225 /* If tls_sec is NULL, we should have signalled an error already. */
2226 if (htab->tls_sec == NULL)
69fc87f1 2227 return 0;
e1918d23 2228 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2229}
2230
2231/* Complain if TLS instruction relocation is against an invalid
2232 instruction. */
2233
2234static void
2c3fc389
NC		 2235invalid_tls_insn (bfd *input_bfd,
2236 asection *input_section,
2237 Elf_Internal_Rela *rel)
69fc87f1
MS		 2238{
2239 reloc_howto_type *howto;
2240
2241 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2242 (*_bfd_error_handler)
d003868e
AM		 2243 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2244 input_bfd,
2245 input_section,
69fc87f1
MS		 2246 (long) rel->r_offset,
2247 howto->name);
77df2968 2248 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2249}
2250
a85d7ed0
NC		 2251/* Relocate a 390 ELF section. */
2252
b34976b6 2253static bfd_boolean
4dfe6ac6
NC		 2254elf_s390_relocate_section (bfd *output_bfd,
2255 struct bfd_link_info *info,
2256 bfd *input_bfd,
2257 asection *input_section,
2258 bfd_byte *contents,
2259 Elf_Internal_Rela *relocs,
2260 Elf_Internal_Sym *local_syms,
2261 asection **local_sections)
a85d7ed0 2262{
0451c93c 2263 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2264 Elf_Internal_Shdr *symtab_hdr;
2265 struct elf_link_hash_entry **sym_hashes;
2266 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2267 Elf_Internal_Rela *rel;
2268 Elf_Internal_Rela *relend;
2269
0ffa91dd
NC		 2270 BFD_ASSERT (is_s390_elf (input_bfd));
2271
0451c93c 2272 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2273 if (htab == NULL)
2274 return FALSE;
2275
0ffa91dd 2276 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2277 sym_hashes = elf_sym_hashes (input_bfd);
2278 local_got_offsets = elf_local_got_offsets (input_bfd);
2279
a85d7ed0
NC		 2280 rel = relocs;
2281 relend = relocs + input_section->reloc_count;
2282 for (; rel < relend; rel++)
2283 {
5236c819 2284 unsigned int r_type;
a85d7ed0
NC		 2285 reloc_howto_type *howto;
2286 unsigned long r_symndx;
2287 struct elf_link_hash_entry *h;
2288 Elf_Internal_Sym *sym;
2289 asection *sec;
0451c93c 2290 bfd_vma off;
a85d7ed0 2291 bfd_vma relocation;
b34976b6 2292 bfd_boolean unresolved_reloc;
a85d7ed0 2293 bfd_reloc_status_type r;
69fc87f1 2294 int tls_type;
470b557a 2295 asection *base_got = htab->elf.sgot;
a85d7ed0
NC		 2296
2297 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2298 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2299 || r_type == (int) R_390_GNU_VTENTRY)
2300 continue;
5236c819 2301 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2302 {
2303 bfd_set_error (bfd_error_bad_value);
b34976b6 2304 return FALSE;
a85d7ed0 2305 }
a85d7ed0 2306
b491616a 2307 howto = elf_howto_table + r_type;
a85d7ed0 2308 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2309
a85d7ed0
NC		 2310 h = NULL;
2311 sym = NULL;
2312 sec = NULL;
b34976b6 2313 unresolved_reloc = FALSE;
a85d7ed0
NC		 2314 if (r_symndx < symtab_hdr->sh_info)
2315 {
2316 sym = local_syms + r_symndx;
2317 sec = local_sections[r_symndx];
470b557a
AK		 2318
2319 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2320 {
2321 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2322 if (local_plt == NULL)
2323 return FALSE;
2324
2325 /* Address of the PLT slot. */
2326 relocation = (htab->elf.iplt->output_section->vma
2327 + htab->elf.iplt->output_offset
2328 + local_plt[r_symndx].plt.offset);
2329
2330 switch (r_type)
2331 {
31db78f6
AK		 2332 case R_390_PLTOFF16:
2333 case R_390_PLTOFF32:
2334 case R_390_PLTOFF64:
2335 relocation -= htab->elf.sgot->output_section->vma;
2336 break;
470b557a
AK		 2337 case R_390_GOTPLT12:
2338 case R_390_GOTPLT16:
2339 case R_390_GOTPLT20:
2340 case R_390_GOTPLT32:
2341 case R_390_GOTPLT64:
2342 case R_390_GOTPLTENT:
2343 case R_390_GOT12:
2344 case R_390_GOT16:
2345 case R_390_GOT20:
2346 case R_390_GOT32:
2347 case R_390_GOT64:
2348 case R_390_GOTENT:
2349 {
2350 /* Write the PLT slot address into the GOT slot. */
2351 bfd_put_64 (output_bfd, relocation,
2352 htab->elf.sgot->contents +
2353 local_got_offsets[r_symndx]);
2354 relocation = (local_got_offsets[r_symndx] +
2355 htab->elf.sgot->output_offset);
2356
2357 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2358 relocation += htab->elf.sgot->output_section->vma;
2359 break;
2360 }
2361 default:
2362 break;
2363 }
2364 /* The output section is needed later in
2365 finish_dynamic_section when creating the dynamic
2366 relocation. */
2367 local_plt[r_symndx].sec = sec;
2368 goto do_relocation;
2369 }
2370 else
2371 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2372 }
2373 else
2374 {
560e09e9 2375 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2376 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2377
b2a8e766
AM		 2378 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2379 r_symndx, symtab_hdr, sym_hashes,
2380 h, sec, relocation,
62d887d4 2381 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2382 }
2383
dbaa2011 2384 if (sec != NULL && discarded_section (sec))
e4067dbb 2385 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2386 rel, 1, relend, howto, 0, contents);
ab96bf03
AM		 2387
2388 if (info->relocatable)
2389 continue;
2390
a85d7ed0
NC		 2391 switch (r_type)
2392 {
5236c819
MS		 2393 case R_390_GOTPLT12:
2394 case R_390_GOTPLT16:
bd1ea41b 2395 case R_390_GOTPLT20:
5236c819
MS		 2396 case R_390_GOTPLT32:
2397 case R_390_GOTPLT64:
2398 case R_390_GOTPLTENT:
2399 /* There are three cases for a GOTPLT relocation. 1) The
2400 relocation is against the jump slot entry of a plt that
2401 will get emitted to the output file. 2) The relocation
2402 is against the jump slot of a plt entry that has been
2403 removed. elf_s390_adjust_gotplt has created a GOT entry
2404 as replacement. 3) The relocation is against a local symbol.
2405 Cases 2) and 3) are the same as the GOT relocation code
2406 so we just have to test for case 1 and fall through for
2407 the other two. */
2408 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2409 {
2410 bfd_vma plt_index;
2411
470b557a
AK		 2412 if (s390_is_ifunc_symbol_p (h))
2413 {
2414 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2415 relocation = (plt_index * GOT_ENTRY_SIZE +
2416 htab->elf.igotplt->output_offset);
2417 if (r_type == R_390_GOTPLTENT)
2418 relocation += htab->elf.igotplt->output_section->vma;
2419 }
2420 else
2421 {
2422 /* Calc. index no.
2423 Current offset - size first entry / entry size. */
2424 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2425 PLT_ENTRY_SIZE;
2426
2427 /* Offset in GOT is PLT index plus GOT headers(3)
2428 times 4, addr & GOT addr. */
2429 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2430 if (r_type == R_390_GOTPLTENT)
2431 relocation += htab->elf.sgot->output_section->vma;
2432 }
5236c819 2433 unresolved_reloc = FALSE;
5236c819
MS		 2434 break;
2435 }
2436 /* Fall through. */
2437
947216bf
AM		 2438 case R_390_GOT12:
2439 case R_390_GOT16:
bd1ea41b 2440 case R_390_GOT20:
947216bf
AM		 2441 case R_390_GOT32:
2442 case R_390_GOT64:
2443 case R_390_GOTENT:
2444 /* Relocation is to the entry for this symbol in the global
2445 offset table. */
470b557a 2446 if (base_got == NULL)
0451c93c 2447 abort ();
a85d7ed0 2448
947216bf
AM		 2449 if (h != NULL)
2450 {
b34976b6 2451 bfd_boolean dyn;
a85d7ed0 2452
947216bf 2453 off = h->got.offset;
0451c93c 2454 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2455
2456 if (s390_is_ifunc_symbol_p (h))
2457 {
2458 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2459 if (off == (bfd_vma)-1)
2460 {
2461 /* No explicit GOT usage so redirect to the
2462 got.iplt slot. */
2463 base_got = htab->elf.igotplt;
2464 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2465 }
2466 else
2467 {
2468 /* Explicit GOT slots must contain the address
2469 of the PLT slot. This will be handled in
2470 finish_dynamic_symbol. */
2471 }
2472 }
2473 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2474 || (info->shared
2475 && SYMBOL_REFERENCES_LOCAL (info, h))
2476 || (ELF_ST_VISIBILITY (h->other)
2477 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2478 {
2479 /* This is actually a static link, or it is a
2480 -Bsymbolic link and the symbol is defined
2481 locally, or the symbol was forced to be local
2482 because of a version file. We must initialize
2483 this entry in the global offset table. Since the
2484 offset must always be a multiple of 2, we use the
2485 least significant bit to record whether we have
2486 initialized it already.
2487
2488 When doing a dynamic link, we create a .rel.got
2489 relocation entry to initialize the value. This
2490 is done in the finish_dynamic_symbol routine. */
2491 if ((off & 1) != 0)
2492 off &= ~1;
2493 else
2494 {
a85d7ed0 2495 bfd_put_64 (output_bfd, relocation,
470b557a 2496 base_got->contents + off);
947216bf
AM		 2497 h->got.offset |= 1;
2498 }
a63cc5f7
AK		 2499
2500 if ((h->def_regular
2501 && info->shared
2502 && SYMBOL_REFERENCES_LOCAL (info, h))
2503 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2504 && ((r_type == R_390_GOTENT
2505 && (bfd_get_16 (input_bfd,
2506 contents + rel->r_offset - 2)
2507 & 0xff0f) == 0xc408)
2508 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2509 || (r_type == R_390_GOT20
2510 && (bfd_get_32 (input_bfd,
2511 contents + rel->r_offset - 2)
2512 & 0xff00f000) == 0xe300c000
2513 && bfd_get_8 (input_bfd,
2514 contents + rel->r_offset + 3) == 0x04)))
2515
2516 {
2517 unsigned short new_insn =
2518 (0xc000 | (bfd_get_8 (input_bfd,
2519 contents + rel->r_offset - 1) & 0xf0));
2520 bfd_put_16 (output_bfd, new_insn,
2521 contents + rel->r_offset - 2);
2522 r_type = R_390_PC32DBL;
2523 rel->r_addend = 2;
2524 howto = elf_howto_table + r_type;
2525 relocation = h->root.u.def.value
2526 + h->root.u.def.section->output_section->vma
2527 + h->root.u.def.section->output_offset;
2528 goto do_relocation;
2529 }
947216bf 2530 }
0451c93c 2531 else
b34976b6 2532 unresolved_reloc = FALSE;
947216bf
AM		 2533 }
2534 else
2535 {
0451c93c
MS		 2536 if (local_got_offsets == NULL)
2537 abort ();
a85d7ed0 2538
947216bf 2539 off = local_got_offsets[r_symndx];
a85d7ed0 2540
947216bf
AM		 2541 /* The offset must always be a multiple of 8. We use
2542 the least significant bit to record whether we have
2543 already generated the necessary reloc. */
2544 if ((off & 1) != 0)
2545 off &= ~1;
2546 else
2547 {
2548 bfd_put_64 (output_bfd, relocation,
f41345a7 2549 htab->elf.sgot->contents + off);
a85d7ed0 2550
947216bf
AM		 2551 if (info->shared)
2552 {
2553 asection *s;
2554 Elf_Internal_Rela outrel;
2555 bfd_byte *loc;
a85d7ed0 2556
f41345a7 2557 s = htab->elf.srelgot;
947216bf 2558 if (s == NULL)
0451c93c 2559 abort ();
a85d7ed0 2560
f41345a7
AK		 2561 outrel.r_offset = (htab->elf.sgot->output_section->vma
2562 + htab->elf.sgot->output_offset
947216bf
AM		 2563 + off);
2564 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2565 outrel.r_addend = relocation;
947216bf
AM		 2566 loc = s->contents;
2567 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2568 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2569 }
a85d7ed0 2570
947216bf
AM		 2571 local_got_offsets[r_symndx] |= 1;
2572 }
2573 }
a85d7ed0 2574
0451c93c
MS		 2575 if (off >= (bfd_vma) -2)
2576 abort ();
2577
470b557a 2578 relocation = base_got->output_offset + off;
0451c93c 2579
ae9a127f
NC		 2580 /* For @GOTENT the relocation is against the offset between
2581 the instruction and the symbols entry in the GOT and not
2582 between the start of the GOT and the symbols entry. We
2583 add the vma of the GOT to get the correct value. */
5236c819
MS		 2584 if ( r_type == R_390_GOTENT
2585 || r_type == R_390_GOTPLTENT)
470b557a 2586 relocation += base_got->output_section->vma;
a85d7ed0 2587
947216bf 2588 break;
99c79b2e 2589
5236c819
MS		 2590 case R_390_GOTOFF16:
2591 case R_390_GOTOFF32:
2592 case R_390_GOTOFF64:
947216bf
AM		 2593 /* Relocation is relative to the start of the global offset
2594 table. */
a85d7ed0 2595
947216bf
AM		 2596 /* Note that sgot->output_offset is not involved in this
2597 calculation. We always want the start of .got. If we
2598 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2599 permitted by the ABI, we might have to change this
2600 calculation. */
f41345a7 2601 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2602 break;
a85d7ed0 2603
947216bf 2604 case R_390_GOTPC:
a85d7ed0 2605 case R_390_GOTPCDBL:
947216bf 2606 /* Use global offset table as symbol value. */
f41345a7 2607 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2608 unresolved_reloc = FALSE;
947216bf 2609 break;
a85d7ed0 2610
fb798c50 2611 case R_390_PLT12DBL:
947216bf 2612 case R_390_PLT16DBL:
fb798c50 2613 case R_390_PLT24DBL:
947216bf
AM		 2614 case R_390_PLT32:
2615 case R_390_PLT32DBL:
2616 case R_390_PLT64:
2617 /* Relocation is to the entry for this symbol in the
2618 procedure linkage table. */
a85d7ed0 2619
947216bf
AM		 2620 /* Resolve a PLT32 reloc against a local symbol directly,
2621 without using the procedure linkage table. */
2622 if (h == NULL)
2623 break;
a85d7ed0 2624
947216bf 2625 if (h->plt.offset == (bfd_vma) -1
31db78f6 2626 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2627 {
2628 /* We didn't make a PLT entry for this symbol. This
2629 happens when statically linking PIC code, or when
2630 using -Bsymbolic. */
2631 break;
2632 }
470b557a
AK		 2633 if (s390_is_ifunc_symbol_p (h))
2634 relocation = (htab->elf.iplt->output_section->vma
2635 + htab->elf.iplt->output_offset
2636 + h->plt.offset);
2637 else
2638 relocation = (htab->elf.splt->output_section->vma
2639 + htab->elf.splt->output_offset
2640 + h->plt.offset);
b34976b6 2641 unresolved_reloc = FALSE;
26e41594 2642 break;
5236c819
MS		 2643
2644 case R_390_PLTOFF16:
2645 case R_390_PLTOFF32:
2646 case R_390_PLTOFF64:
26e41594
AM		 2647 /* Relocation is to the entry for this symbol in the
2648 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2649
2650 /* For local symbols or if we didn't make a PLT entry for
2651 this symbol resolve the symbol directly. */
31db78f6 2652 if (h == NULL
5236c819 2653 || h->plt.offset == (bfd_vma) -1
31db78f6 2654 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2655 {
f41345a7 2656 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2657 break;
2658 }
2659
470b557a
AK		 2660 if (s390_is_ifunc_symbol_p (h))
2661 relocation = (htab->elf.iplt->output_section->vma
2662 + htab->elf.iplt->output_offset
2663 + h->plt.offset
2664 - htab->elf.sgot->output_section->vma);
2665 else
2666 relocation = (htab->elf.splt->output_section->vma
2667 + htab->elf.splt->output_offset
2668 + h->plt.offset
2669 - htab->elf.sgot->output_section->vma);
5236c819 2670 unresolved_reloc = FALSE;
947216bf
AM		 2671 break;
2672
2673 case R_390_8:
2674 case R_390_16:
2675 case R_390_32:
2676 case R_390_64:
2677 case R_390_PC16:
fb798c50 2678 case R_390_PC12DBL:
947216bf 2679 case R_390_PC16DBL:
fb798c50 2680 case R_390_PC24DBL:
947216bf 2681 case R_390_PC32:
a85d7ed0 2682 case R_390_PC32DBL:
947216bf 2683 case R_390_PC64:
470b557a
AK		 2684
2685 if (h != NULL
2686 && s390_is_ifunc_symbol_p (h)
2687 && h->def_regular)
2688 {
2689 if (!info->shared || !h->non_got_ref)
2690 {
2691 /* For a non-shared object STT_GNU_IFUNC symbol must
2692 go through PLT. */
2693 relocation = (htab->elf.iplt->output_section->vma
2694 + htab->elf.iplt->output_offset
2695 + h ->plt.offset);
2696 goto do_relocation;
2697 }
2698 else
2699 {
2700 /* For shared objects a runtime relocation is needed. */
2701
2702 Elf_Internal_Rela outrel;
2703 asection *sreloc;
2704
2705 /* Need a dynamic relocation to get the real function
2706 address. */
2707 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2708 info,
2709 input_section,
2710 rel->r_offset);
2711 if (outrel.r_offset == (bfd_vma) -1
2712 || outrel.r_offset == (bfd_vma) -2)
2713 abort ();
2714
2715 outrel.r_offset += (input_section->output_section->vma
2716 + input_section->output_offset);
2717
2718 if (h->dynindx == -1
2719 || h->forced_local
2720 || info->executable)
2721 {
2722 /* This symbol is resolved locally. */
2723 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2724 outrel.r_addend = (h->root.u.def.value
2725 + h->root.u.def.section->output_section->vma
2726 + h->root.u.def.section->output_offset);
2727 }
2728 else
2729 {
2730 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2731 outrel.r_addend = 0;
2732 }
2733
2734 sreloc = htab->elf.irelifunc;
2735 elf_append_rela (output_bfd, sreloc, &outrel);
2736
2737 /* If this reloc is against an external symbol, we
2738 do not want to fiddle with the addend. Otherwise,
2739 we need to include the symbol value so that it
2740 becomes an addend for the dynamic reloc. For an
2741 internal symbol, we have updated addend. */
2742 continue;
2743 }
2744 }
2745
b1e24c02 2746 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2747 break;
2748
947216bf 2749 if ((info->shared
82058a73
MS		 2750 && (h == NULL
2751 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2752 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2753 && ((r_type != R_390_PC16
fb798c50 2754 && r_type != R_390_PC12DBL
0451c93c 2755 && r_type != R_390_PC16DBL
fb798c50 2756 && r_type != R_390_PC24DBL
0451c93c
MS		 2757 && r_type != R_390_PC32
2758 && r_type != R_390_PC32DBL
2759 && r_type != R_390_PC64)
8c21ca21 2760 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810
MS		 2761 || (ELIMINATE_COPY_RELOCS
2762 && !info->shared
0451c93c
MS		 2763 && h != NULL
2764 && h->dynindx != -1
f5385ebf
AM		 2765 && !h->non_got_ref
2766 && ((h->def_dynamic
2767 && !h->def_regular)
0451c93c
MS		 2768 || h->root.type == bfd_link_hash_undefweak
2769 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2770 {
2771 Elf_Internal_Rela outrel;
b34976b6 2772 bfd_boolean skip, relocate;
0451c93c 2773 asection *sreloc;
947216bf 2774 bfd_byte *loc;
a85d7ed0 2775
947216bf
AM		 2776 /* When generating a shared object, these relocations
2777 are copied into the output file to be resolved at run
2778 time. */
b34976b6
AM		 2779 skip = FALSE;
2780 relocate = FALSE;
a85d7ed0 2781
c629eae0
JJ		 2782 outrel.r_offset =
2783 _bfd_elf_section_offset (output_bfd, info, input_section,
2784 rel->r_offset);
2785 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2786 skip = TRUE;
0bb2d96a 2787 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2788 skip = TRUE, relocate = TRUE;
a85d7ed0 2789
947216bf
AM		 2790 outrel.r_offset += (input_section->output_section->vma
2791 + input_section->output_offset);
a85d7ed0 2792
947216bf 2793 if (skip)
0bb2d96a 2794 memset (&outrel, 0, sizeof outrel);
947216bf 2795 else if (h != NULL
0451c93c
MS		 2796 && h->dynindx != -1
2797 && (r_type == R_390_PC16
fb798c50 2798 || r_type == R_390_PC12DBL
0451c93c 2799 || r_type == R_390_PC16DBL
fb798c50 2800 || r_type == R_390_PC24DBL
0451c93c
MS		 2801 || r_type == R_390_PC32
2802 || r_type == R_390_PC32DBL
2803 || r_type == R_390_PC64
2804 || !info->shared
8c21ca21 2805 || !SYMBOLIC_BIND (info, h)
f5385ebf 2806 || !h->def_regular))
947216bf
AM		 2807 {
2808 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2809 outrel.r_addend = rel->r_addend;
947216bf
AM		 2810 }
2811 else
2812 {
0451c93c 2813 /* This symbol is local, or marked to become local. */
90ced0dd 2814 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2815 if (r_type == R_390_64)
2816 {
2817 relocate = TRUE;
2818 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2819 }
2820 else
2821 {
2822 long sindx;
2823
90ced0dd 2824 if (bfd_is_abs_section (sec))
b5727d75
MS		 2825 sindx = 0;
2826 else if (sec == NULL || sec->owner == NULL)
2827 {
2828 bfd_set_error(bfd_error_bad_value);
2829 return FALSE;
2830 }
2831 else
2832 {
2833 asection *osec;
2834
2835 osec = sec->output_section;
2836 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2837
2838 if (sindx == 0)
2839 {
2840 osec = htab->elf.text_index_section;
2841 sindx = elf_section_data (osec)->dynindx;
2842 }
2843 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2844
2845 /* We are turning this relocation into one
2846 against a section symbol, so subtract out
2847 the output section's address but not the
2848 offset of the input section in the output
2849 section. */
90ced0dd 2850 outrel.r_addend -= osec->vma;
b5727d75
MS		 2851 }
2852 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2853 }
0451c93c 2854 }
a85d7ed0 2855
0451c93c
MS		 2856 sreloc = elf_section_data (input_section)->sreloc;
2857 if (sreloc == NULL)
2858 abort ();
2859
947216bf
AM		 2860 loc = sreloc->contents;
2861 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2862 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2863
947216bf
AM		 2864 /* If this reloc is against an external symbol, we do
2865 not want to fiddle with the addend. Otherwise, we
2866 need to include the symbol value so that it becomes
2867 an addend for the dynamic reloc. */
2868 if (! relocate)
2869 continue;
2870 }
a85d7ed0 2871
947216bf 2872 break;
a85d7ed0 2873
69fc87f1
MS		 2874 /* Relocations for tls literal pool entries. */
2875 case R_390_TLS_IE64:
2876 if (info->shared)
2877 {
2878 Elf_Internal_Rela outrel;
2879 asection *sreloc;
2880 bfd_byte *loc;
2881
2882 outrel.r_offset = rel->r_offset
2883 + input_section->output_section->vma
2884 + input_section->output_offset;
2885 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2886 sreloc = elf_section_data (input_section)->sreloc;
2887 if (sreloc == NULL)
2888 abort ();
2889 loc = sreloc->contents;
2890 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2891 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2892 }
ae9a127f 2893 /* Fall through. */
69fc87f1
MS		 2894
2895 case R_390_TLS_GD64:
2896 case R_390_TLS_GOTIE64:
2897 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2898 tls_type = GOT_UNKNOWN;
2899 if (h == NULL && local_got_offsets)
2900 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2901 else if (h != NULL)
2902 {
2903 tls_type = elf_s390_hash_entry(h)->tls_type;
2904 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2905 r_type = R_390_TLS_LE64;
2906 }
2907 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2908 r_type = R_390_TLS_IE64;
2909
2910 if (r_type == R_390_TLS_LE64)
2911 {
2912 /* This relocation gets optimized away by the local exec
2913 access optimization. */
2914 BFD_ASSERT (! unresolved_reloc);
2915 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2916 contents + rel->r_offset);
2917 continue;
2918 }
2919
f41345a7 2920 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2921 abort ();
2922
2923 if (h != NULL)
2924 off = h->got.offset;
2925 else
2926 {
2927 if (local_got_offsets == NULL)
2928 abort ();
2929
2930 off = local_got_offsets[r_symndx];
2931 }
2932
2933 emit_tls_relocs:
2934
2935 if ((off & 1) != 0)
2936 off &= ~1;
26e41594 2937 else
69fc87f1
MS		 2938 {
2939 Elf_Internal_Rela outrel;
2940 bfd_byte *loc;
2941 int dr_type, indx;
2942
f41345a7 2943 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2944 abort ();
2945
f41345a7
AK		 2946 outrel.r_offset = (htab->elf.sgot->output_section->vma
2947 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2948
2949 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2950 if (r_type == R_390_TLS_GD64)
2951 dr_type = R_390_TLS_DTPMOD;
2952 else
2953 dr_type = R_390_TLS_TPOFF;
2954 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2955 outrel.r_addend = relocation - dtpoff_base (info);
2956 else
2957 outrel.r_addend = 0;
2958 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2959 loc = htab->elf.srelgot->contents;
2960 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2961 * sizeof (Elf64_External_Rela);
2962 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2963
2964 if (r_type == R_390_TLS_GD64)
2965 {
2966 if (indx == 0)
2967 {
2968 BFD_ASSERT (! unresolved_reloc);
2969 bfd_put_64 (output_bfd,
2970 relocation - dtpoff_base (info),
f41345a7 2971 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2972 }
2973 else
2974 {
2975 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2976 outrel.r_offset += GOT_ENTRY_SIZE;
2977 outrel.r_addend = 0;
f41345a7 2978 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2979 loc += sizeof (Elf64_External_Rela);
2980 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2981 }
2982 }
2983
2984 if (h != NULL)
2985 h->got.offset |= 1;
2986 else
2987 local_got_offsets[r_symndx] |= 1;
2988 }
2989
2990 if (off >= (bfd_vma) -2)
2991 abort ();
2992 if (r_type == ELF64_R_TYPE (rel->r_info))
2993 {
f41345a7 2994 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2995 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2996 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2997 unresolved_reloc = FALSE;
2998 }
2999 else
3000 {
f41345a7 3001 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3002 contents + rel->r_offset);
3003 continue;
3004 }
3005 break;
3006
3007 case R_390_TLS_GOTIE12:
bd1ea41b 3008 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3009 case R_390_TLS_IEENT:
3010 if (h == NULL)
3011 {
3012 if (local_got_offsets == NULL)
3013 abort();
3014 off = local_got_offsets[r_symndx];
3015 if (info->shared)
3016 goto emit_tls_relocs;
3017 }
3018 else
3019 {
3020 off = h->got.offset;
3021 tls_type = elf_s390_hash_entry(h)->tls_type;
3022 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3023 goto emit_tls_relocs;
3024 }
3025
f41345a7 3026 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3027 abort ();
3028
3029 BFD_ASSERT (! unresolved_reloc);
3030 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3031 htab->elf.sgot->contents + off);
3032 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3033 if (r_type == R_390_TLS_IEENT)
f41345a7 3034 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3035 unresolved_reloc = FALSE;
3036 break;
3037
3038 case R_390_TLS_LDM64:
3039 if (! info->shared)
3040 /* The literal pool entry this relocation refers to gets ignored
3041 by the optimized code of the local exec model. Do nothing
3042 and the value will turn out zero. */
3043 continue;
3044
f41345a7 3045 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3046 abort ();
3047
3048 off = htab->tls_ldm_got.offset;
3049 if (off & 1)
3050 off &= ~1;
3051 else
3052 {
3053 Elf_Internal_Rela outrel;
3054 bfd_byte *loc;
3055
f41345a7 3056 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3057 abort ();
3058
f41345a7
AK		 3059 outrel.r_offset = (htab->elf.sgot->output_section->vma
3060 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3061
3062 bfd_put_64 (output_bfd, 0,
f41345a7 3063 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3064 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3065 outrel.r_addend = 0;
f41345a7
AK		 3066 loc = htab->elf.srelgot->contents;
3067 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3068 * sizeof (Elf64_External_Rela);
3069 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3070 htab->tls_ldm_got.offset |= 1;
3071 }
f41345a7 3072 relocation = htab->elf.sgot->output_offset + off;
26e41594 3073 unresolved_reloc = FALSE;
69fc87f1
MS		 3074 break;
3075
3076 case R_390_TLS_LE64:
3077 if (info->shared)
3078 {
3079 /* Linking a shared library with non-fpic code requires
3080 a R_390_TLS_TPOFF relocation. */
3081 Elf_Internal_Rela outrel;
3082 asection *sreloc;
3083 bfd_byte *loc;
3084 int indx;
3085
3086 outrel.r_offset = rel->r_offset
3087 + input_section->output_section->vma
3088 + input_section->output_offset;
3089 if (h != NULL && h->dynindx != -1)
3090 indx = h->dynindx;
3091 else
3092 indx = 0;
3093 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3094 if (indx == 0)
3095 outrel.r_addend = relocation - dtpoff_base (info);
3096 else
3097 outrel.r_addend = 0;
3098 sreloc = elf_section_data (input_section)->sreloc;
3099 if (sreloc == NULL)
3100 abort ();
3101 loc = sreloc->contents;
3102 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3103 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3104 }
3105 else
3106 {
3107 BFD_ASSERT (! unresolved_reloc);
3108 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3109 contents + rel->r_offset);
3110 }
3111 continue;
3112
3113 case R_390_TLS_LDO64:
de8bee76 3114 if (info->shared || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3115 relocation -= dtpoff_base (info);
3116 else
3117 /* When converting LDO to LE, we must negate. */
3118 relocation = -tpoff (info, relocation);
3119 break;
3120
3121 /* Relocations for tls instructions. */
3122 case R_390_TLS_LOAD:
3123 case R_390_TLS_GDCALL:
3124 case R_390_TLS_LDCALL:
3125 tls_type = GOT_UNKNOWN;
3126 if (h == NULL && local_got_offsets)
3127 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3128 else if (h != NULL)
3129 tls_type = elf_s390_hash_entry(h)->tls_type;
3130
3131 if (tls_type == GOT_TLS_GD)
3132 continue;
3133
3134 if (r_type == R_390_TLS_LOAD)
3135 {
3136 if (!info->shared && (h == NULL || h->dynindx == -1))
3137 {
3138 /* IE->LE transition. Four valid cases:
3139 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3140 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3141 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3142 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3143 unsigned int insn0, insn1, ry;
3144
3145 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3146 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3147 if (insn1 != 0x0004)
3148 invalid_tls_insn (input_bfd, input_section, rel);
3149 ry = 0;
3150 if ((insn0 & 0xff00f000) == 0xe3000000)
3151 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3152 ry = (insn0 & 0x000f0000);
3153 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3154 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3155 ry = (insn0 & 0x0000f000) << 4;
3156 else if ((insn0 & 0xff00f000) == 0xe300c000)
3157 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3158 ry = (insn0 & 0x000f0000);
3159 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3160 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3161 ry = (insn0 & 0x0000f000) << 4;
3162 else
3163 invalid_tls_insn (input_bfd, input_section, rel);
3164 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3165 insn1 = 0x000d;
3166 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3167 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3168 }
3169 }
3170 else if (r_type == R_390_TLS_GDCALL)
3171 {
3172 unsigned int insn0, insn1;
3173
3174 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3175 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3176 if ((insn0 & 0xffff0000) != 0xc0e50000)
3177 invalid_tls_insn (input_bfd, input_section, rel);
3178 if (!info->shared && (h == NULL || h->dynindx == -1))
3179 {
3180 /* GD->LE transition.
3181 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3182 insn0 = 0xc0040000;
3183 insn1 = 0x0000;
3184 }
3185 else
3186 {
3187 /* GD->IE transition.
3188 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3189 insn0 = 0xe322c000;
3190 insn1 = 0x0004;
3191 }
3192 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3193 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3194 }
3195 else if (r_type == R_390_TLS_LDCALL)
3196 {
3197 if (!info->shared)
3198 {
3199 unsigned int insn0, insn1;
3200
3201 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3202 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3203 if ((insn0 & 0xffff0000) != 0xc0e50000)
3204 invalid_tls_insn (input_bfd, input_section, rel);
3205 /* LD->LE transition.
3206 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3207 insn0 = 0xc0040000;
3208 insn1 = 0x0000;
3209 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3210 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3211 }
3212 }
3213 continue;
3214
947216bf
AM		 3215 default:
3216 break;
3217 }
a85d7ed0 3218
239e1f3a
AM		 3219 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3220 because such sections are not SEC_ALLOC and thus ld.so will
3221 not process them. */
0451c93c 3222 if (unresolved_reloc
239e1f3a 3223 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3224 && h->def_dynamic)
3225 && _bfd_elf_section_offset (output_bfd, info, input_section,
3226 rel->r_offset) != (bfd_vma) -1)
0451c93c 3227 (*_bfd_error_handler)
843fe662 3228 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3229 input_bfd,
3230 input_section,
0451c93c 3231 (long) rel->r_offset,
843fe662 3232 howto->name,
0451c93c
MS		 3233 h->root.root.string);
3234
470b557a
AK		 3235 do_relocation:
3236
fb798c50
AK		 3237 /* When applying a 24 bit reloc we need to start one byte
3238 earlier. Otherwise the 32 bit get/put bfd operations might
3239 access a byte after the actual section. */
3240 if (r_type == R_390_PC24DBL
3241 || r_type == R_390_PLT24DBL)
3242 rel->r_offset--;
3243
bd1ea41b
MS		 3244 if (r_type == R_390_20
3245 || r_type == R_390_GOT20
3246 || r_type == R_390_GOTPLT20
3247 || r_type == R_390_TLS_GOTIE20)
3248 {
3249 relocation += rel->r_addend;
3250 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3251 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3252 contents, rel->r_offset,
3253 relocation, 0);
3254 }
3255 else
3256 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3257 contents, rel->r_offset,
3258 relocation, rel->r_addend);
3259
3260 if (r != bfd_reloc_ok)
3261 {
0451c93c 3262 const char *name;
ec338859 3263
0451c93c
MS		 3264 if (h != NULL)
3265 name = h->root.root.string;
3266 else
a85d7ed0 3267 {
0451c93c
MS		 3268 name = bfd_elf_string_from_elf_section (input_bfd,
3269 symtab_hdr->sh_link,
3270 sym->st_name);
3271 if (name == NULL)
b34976b6 3272 return FALSE;
0451c93c
MS		 3273 if (*name == '\0')
3274 name = bfd_section_name (input_bfd, sec);
3275 }
ec338859 3276
0451c93c
MS		 3277 if (r == bfd_reloc_overflow)
3278 {
ec338859 3279
0451c93c 3280 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3281 (info, (h ? &h->root : NULL), name, howto->name,
3282 (bfd_vma) 0, input_bfd, input_section,
3283 rel->r_offset)))
b34976b6 3284 return FALSE;
0451c93c
MS		 3285 }
3286 else
3287 {
3288 (*_bfd_error_handler)
d003868e
AM		 3289 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3290 input_bfd, input_section,
0451c93c 3291 (long) rel->r_offset, name, (int) r);
b34976b6 3292 return FALSE;
a85d7ed0
NC		 3293 }
3294 }
3295 }
3296
b34976b6 3297 return TRUE;
a85d7ed0
NC		 3298}
3299
470b557a
AK		 3300/* Generate the PLT slots together with the dynamic relocations needed
3301 for IFUNC symbols. */
3302
3303static void
3304elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3305 struct bfd_link_info *info,
3306 struct elf_link_hash_entry *h,
3307 struct elf_s390_link_hash_table *htab,
3308 bfd_vma plt_offset,
3309 bfd_vma resolver_address)
3310{
3311 bfd_vma plt_index;
3312 bfd_vma got_offset;
3313 Elf_Internal_Rela rela;
3314 bfd_byte *loc;
3315 asection *plt, *gotplt, *relplt;
3316
3317 if (htab->elf.iplt == NULL
3318 || htab->elf.igotplt == NULL
3319 || htab->elf.irelplt == NULL)
3320 abort ();
3321
3322 /* Index of the PLT slot within iplt section. */
3323 plt_index = plt_offset / PLT_ENTRY_SIZE;
3324 plt = htab->elf.iplt;
3325 /* Offset into the igot.plt section. */
3326 got_offset = plt_index * GOT_ENTRY_SIZE;
3327 gotplt = htab->elf.igotplt;
3328 relplt = htab->elf.irelplt;
3329
3330 /* Fill in the blueprint of a PLT. */
3331 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3332 PLT_ENTRY_SIZE);
3333
3334 /* Fixup the relative address to the GOT entry */
3335 bfd_put_32 (output_bfd,
3336 (gotplt->output_section->vma +
3337 gotplt->output_offset + got_offset
3338 - (plt->output_section->vma +
3339 plt->output_offset +
3340 plt_offset))/2,
3341 plt->contents + plt_offset + 2);
3342 /* Fixup the relative branch to PLT 0 */
3343 bfd_put_32 (output_bfd, - (plt->output_offset +
3344 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3345 plt->contents + plt_offset + 24);
3346 /* Fixup offset into .rela.plt section. */
3347 bfd_put_32 (output_bfd, relplt->output_offset +
3348 plt_index * sizeof (Elf64_External_Rela),
3349 plt->contents + plt_offset + 28);
3350
3351 /* Fill in the entry in the global offset table.
3352 Points to instruction after GOT offset. */
3353 bfd_put_64 (output_bfd,
3354 (plt->output_section->vma
3355 + plt->output_offset
3356 + plt_offset
3357 + 14),
3358 gotplt->contents + got_offset);
3359
3360 /* Fill in the entry in the .rela.plt section. */
3361 rela.r_offset = (gotplt->output_section->vma
3362 + gotplt->output_offset
3363 + got_offset);
3364
3365 if (!h
3366 || h->dynindx == -1
3367 || ((info->executable
3368 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3369 && h->def_regular))
3370 {
3371 /* The symbol can be locally resolved. */
3372 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3373 rela.r_addend = resolver_address;
3374 }
3375 else
3376 {
3377 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3378 rela.r_addend = 0;
3379 }
3380
3381 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3382 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3383}
3384
3385
a85d7ed0
NC		 3386/* Finish up dynamic symbol handling. We set the contents of various
3387 dynamic sections here. */
3388
b34976b6 3389static bfd_boolean
4dfe6ac6
NC		 3390elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3391 struct bfd_link_info *info,
3392 struct elf_link_hash_entry *h,
3393 Elf_Internal_Sym *sym)
a85d7ed0 3394{
0451c93c 3395 struct elf_s390_link_hash_table *htab;
470b557a 3396 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3397
0451c93c 3398 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3399 if (htab == NULL)
3400 return FALSE;
a85d7ed0
NC		 3401
3402 if (h->plt.offset != (bfd_vma) -1)
3403 {
a85d7ed0 3404 bfd_vma plt_index;
0451c93c
MS		 3405 bfd_vma got_offset;
3406 Elf_Internal_Rela rela;
947216bf 3407 bfd_byte *loc;
a85d7ed0
NC		 3408
3409 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3410 it up. */
470b557a
AK		 3411 if (s390_is_ifunc_symbol_p (h))
3412 {
3413 /* If we can resolve the IFUNC symbol locally we generate an
3414 IRELATIVE reloc. */
3415 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3416 eh->ifunc_resolver_address +
3417 eh->ifunc_resolver_section->output_offset +
3418 eh->ifunc_resolver_section->output_section->vma);
3419 ;
3420 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3421 symbols is below. */
3422 }
3423 else
3424 {
3425 if (h->dynindx == -1
3426 || htab->elf.splt == NULL
3427 || htab->elf.sgotplt == NULL
3428 || htab->elf.srelplt == NULL)
3429 abort ();
a85d7ed0 3430
470b557a
AK		 3431 /* Calc. index no.
3432 Current offset - size first entry / entry size. */
3433 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3434
470b557a
AK		 3435 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3436 addr & GOT addr. */
3437 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3438
470b557a
AK		 3439 /* Fill in the blueprint of a PLT. */
3440 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3441 PLT_ENTRY_SIZE);
3442
3443 /* Fixup the relative address to the GOT entry */
3444 bfd_put_32 (output_bfd,
3445 (htab->elf.sgotplt->output_section->vma +
3446 htab->elf.sgotplt->output_offset + got_offset
3447 - (htab->elf.splt->output_section->vma +
3448 htab->elf.splt->output_offset +
3449 h->plt.offset))/2,
3450 htab->elf.splt->contents + h->plt.offset + 2);
3451 /* Fixup the relative branch to PLT 0 */
3452 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3453 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3454 htab->elf.splt->contents + h->plt.offset + 24);
3455 /* Fixup offset into .rela.plt section. */
3456 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3457 htab->elf.splt->contents + h->plt.offset + 28);
3458
3459 /* Fill in the entry in the global offset table.
3460 Points to instruction after GOT offset. */
3461 bfd_put_64 (output_bfd,
3462 (htab->elf.splt->output_section->vma
3463 + htab->elf.splt->output_offset
3464 + h->plt.offset
3465 + 14),
3466 htab->elf.sgotplt->contents + got_offset);
3467
3468 /* Fill in the entry in the .rela.plt section. */
3469 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3470 + htab->elf.sgotplt->output_offset
3471 + got_offset);
3472 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3473 rela.r_addend = 0;
3474 loc = htab->elf.srelplt->contents + plt_index *
3475 sizeof (Elf64_External_Rela);
3476 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3477
3478 if (!h->def_regular)
3479 {
3480 /* Mark the symbol as undefined, rather than as defined in
3481 the .plt section. Leave the value alone. This is a clue
3482 for the dynamic linker, to make function pointer
3483 comparisons work between an application and shared
3484 library. */
3485 sym->st_shndx = SHN_UNDEF;
3486 }
a85d7ed0
NC		 3487 }
3488 }
3489
69fc87f1
MS		 3490 if (h->got.offset != (bfd_vma) -1
3491 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3492 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3493 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3494 {
a85d7ed0 3495 Elf_Internal_Rela rela;
947216bf 3496 bfd_byte *loc;
a85d7ed0
NC		 3497
3498 /* This symbol has an entry in the global offset table. Set it
947216bf 3499 up. */
f41345a7 3500 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3501 abort ();
a85d7ed0 3502
f41345a7
AK		 3503 rela.r_offset = (htab->elf.sgot->output_section->vma
3504 + htab->elf.sgot->output_offset
dc810e39 3505 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3506
470b557a
AK		 3507 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3508 {
3509 if (info->shared)
3510 {
3511 /* An explicit GOT slot usage needs GLOB_DAT. If the
3512 symbol references local the implicit got.iplt slot
3513 will be used and the IRELATIVE reloc has been created
3514 above. */
3515 goto do_glob_dat;
3516 }
3517 else
3518 {
3519 /* For non-shared objects explicit GOT slots must be
3520 filled with the PLT slot address for pointer
3521 equality reasons. */
3522 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3523 + htab->elf.iplt->output_offset
3524 + h->plt.offset),
3525 htab->elf.sgot->contents + h->got.offset);
3526 return TRUE;
3527 }
3528 }
3529 else if (info->shared
8c21ca21 3530 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3531 {
470b557a
AK		 3532 /* If this is a static link, or it is a -Bsymbolic link and
3533 the symbol is defined locally or was forced to be local
3534 because of a version file, we just want to emit a
3535 RELATIVE reloc. The entry in the global offset table
3536 will already have been initialized in the
3537 relocate_section function. */
8c21ca21
AK		 3538 if (!h->def_regular)
3539 return FALSE;
0451c93c 3540 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3541 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3542 rela.r_addend = (h->root.u.def.value
3543 + h->root.u.def.section->output_section->vma
3544 + h->root.u.def.section->output_offset);
3545 }
a85d7ed0
NC		 3546 else
3547 {
3548 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3549do_glob_dat:
f41345a7 3550 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3551 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3552 rela.r_addend = 0;
3553 }
a85d7ed0 3554
f41345a7
AK		 3555 loc = htab->elf.srelgot->contents;
3556 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3557 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3558 }
3559
f5385ebf 3560 if (h->needs_copy)
a85d7ed0 3561 {
a85d7ed0 3562 Elf_Internal_Rela rela;
947216bf 3563 bfd_byte *loc;
a85d7ed0
NC		 3564
3565 /* This symbols needs a copy reloc. Set it up. */
3566
0451c93c
MS		 3567 if (h->dynindx == -1
3568 || (h->root.type != bfd_link_hash_defined
3569 && h->root.type != bfd_link_hash_defweak)
3570 || htab->srelbss == NULL)
3571 abort ();
a85d7ed0
NC		 3572
3573 rela.r_offset = (h->root.u.def.value
3574 + h->root.u.def.section->output_section->vma
3575 + h->root.u.def.section->output_offset);
3576 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3577 rela.r_addend = 0;
947216bf
AM		 3578 loc = htab->srelbss->contents;
3579 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3580 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3581 }
3582
3583 /* Mark some specially defined symbols as absolute. */
9637f6ef 3584 if (h == htab->elf.hdynamic
22edb2f1
RS		 3585 || h == htab->elf.hgot
3586 || h == htab->elf.hplt)
a85d7ed0
NC		 3587 sym->st_shndx = SHN_ABS;
3588
b34976b6 3589 return TRUE;
a85d7ed0
NC		 3590}
3591
0451c93c
MS		 3592/* Used to decide how to sort relocs in an optimal manner for the
3593 dynamic linker, before writing them out. */
3594
3595static enum elf_reloc_type_class
7e612e98
AM		 3596elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3597 const asection *rel_sec ATTRIBUTE_UNUSED,
3598 const Elf_Internal_Rela *rela)
0451c93c
MS		 3599{
3600 switch ((int) ELF64_R_TYPE (rela->r_info))
3601 {
3602 case R_390_RELATIVE:
3603 return reloc_class_relative;
3604 case R_390_JMP_SLOT:
3605 return reloc_class_plt;
3606 case R_390_COPY:
3607 return reloc_class_copy;
3608 default:
3609 return reloc_class_normal;
3610 }
3611}
3612
a85d7ed0
NC		 3613/* Finish up the dynamic sections. */
3614
b34976b6 3615static bfd_boolean
4dfe6ac6
NC		 3616elf_s390_finish_dynamic_sections (bfd *output_bfd,
3617 struct bfd_link_info *info)
a85d7ed0 3618{
0451c93c 3619 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3620 bfd *dynobj;
3621 asection *sdyn;
470b557a
AK		 3622 bfd *ibfd;
3623 unsigned int i;
a85d7ed0 3624
0451c93c 3625 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3626 if (htab == NULL)
3627 return FALSE;
3628
0451c93c 3629 dynobj = htab->elf.dynobj;
3d4d4302 3630 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3631
0451c93c 3632 if (htab->elf.dynamic_sections_created)
a85d7ed0 3633 {
a85d7ed0
NC		 3634 Elf64_External_Dyn *dyncon, *dynconend;
3635
f41345a7 3636 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3637 abort ();
a85d7ed0
NC		 3638
3639 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3640 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3641 for (; dyncon < dynconend; dyncon++)
3642 {
3643 Elf_Internal_Dyn dyn;
a85d7ed0 3644 asection *s;
ec338859 3645
a85d7ed0 3646 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3647
a85d7ed0
NC		 3648 switch (dyn.d_tag)
3649 {
3650 default:
0451c93c 3651 continue;
ec338859 3652
a85d7ed0 3653 case DT_PLTGOT:
f41345a7 3654 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3655 break;
ec338859 3656
a85d7ed0 3657 case DT_JMPREL:
f41345a7 3658 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0 3659 break;
ec338859 3660
a85d7ed0 3661 case DT_PLTRELSZ:
f41345a7 3662 s = htab->elf.srelplt->output_section;
eea6121a 3663 dyn.d_un.d_val = s->size;
a85d7ed0 3664 break;
ec338859 3665
a85d7ed0
NC		 3666 case DT_RELASZ:
3667 /* The procedure linkage table relocs (DT_JMPREL) should
3668 not be included in the overall relocs (DT_RELA).
3669 Therefore, we override the DT_RELASZ entry here to
3670 make it not include the JMPREL relocs. Since the
3671 linker script arranges for .rela.plt to follow all
3672 other relocation sections, we don't have to worry
3673 about changing the DT_RELA entry. */
f41345a7 3674 s = htab->elf.srelplt->output_section;
eea6121a 3675 dyn.d_un.d_val -= s->size;
a85d7ed0
NC		 3676 break;
3677 }
0451c93c
MS		 3678
3679 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3680 }
3681
3682 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3683 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3684 {
3685 /* fill in blueprint for plt 0 entry */
f41345a7 3686 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3687 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3688 /* Fixup relative address to start of GOT */
3689 bfd_put_32 (output_bfd,
f41345a7
AK		 3690 (htab->elf.sgotplt->output_section->vma +
3691 htab->elf.sgotplt->output_offset
3692 - htab->elf.splt->output_section->vma - 6)/2,
3693 htab->elf.splt->contents + 8);
a85d7ed0 3694 }
387f8054
MR		 3695 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3696 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3697 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3698 }
3699
f41345a7 3700 if (htab->elf.sgotplt)
a85d7ed0 3701 {
0451c93c 3702 /* Fill in the first three entries in the global offset table. */
f41345a7 3703 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3704 {
3705 bfd_put_64 (output_bfd,
3706 (sdyn == NULL ? (bfd_vma) 0
3707 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3708 htab->elf.sgotplt->contents);
0451c93c 3709 /* One entry for shared object struct ptr. */
f41345a7 3710 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3711 /* One entry for _dl_runtime_resolve. */
f41345a7 3712 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
0451c93c 3713 }
a85d7ed0 3714
f41345a7 3715 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3716 ->this_hdr.sh_entsize = 8;
3717 }
470b557a
AK		 3718
3719 /* Finish dynamic symbol for local IFUNC symbols. */
3720 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3721 {
3722 struct plt_entry *local_plt;
3723 Elf_Internal_Sym *isym;
3724 Elf_Internal_Shdr *symtab_hdr;
3725
3726 symtab_hdr = &elf_symtab_hdr (ibfd);
3727
3728 local_plt = elf_s390_local_plt (ibfd);
3729 if (local_plt != NULL)
3730 for (i = 0; i < symtab_hdr->sh_info; i++)
3731 {
3732 if (local_plt[i].plt.offset != (bfd_vma) -1)
3733 {
3734 asection *sec = local_plt[i].sec;
3735 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3736 if (isym == NULL)
3737 return FALSE;
3738
3739 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3740 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3741 local_plt[i].plt.offset,
3742 isym->st_value
3743 + sec->output_section->vma
3744 + sec->output_offset);
3745
3746 }
3747 }
3748 }
3749
b34976b6 3750 return TRUE;
a85d7ed0
NC		 3751}
3752
4c45e5c9
JJ		 3753/* Return address for Ith PLT stub in section PLT, for relocation REL
3754 or (bfd_vma) -1 if it should not be included. */
3755
3756static bfd_vma
3757elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3758 const arelent *rel ATTRIBUTE_UNUSED)
3759{
3760 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3761}
3762
ae9a127f
NC		 3763/* Why was the hash table entry size definition changed from
3764 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3765 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3766
3767const struct elf_size_info s390_elf64_size_info =
3768{
3769 sizeof (Elf64_External_Ehdr),
3770 sizeof (Elf64_External_Phdr),
3771 sizeof (Elf64_External_Shdr),
3772 sizeof (Elf64_External_Rel),
3773 sizeof (Elf64_External_Rela),
3774 sizeof (Elf64_External_Sym),
3775 sizeof (Elf64_External_Dyn),
3776 sizeof (Elf_External_Note),
ae9a127f
NC		 3777 8, /* hash-table entry size. */
3778 1, /* internal relocations per external relocations. */
3779 64, /* arch_size. */
45d6a902 3780 3, /* log_file_align. */
a85d7ed0
NC		 3781 ELFCLASS64, EV_CURRENT,
3782 bfd_elf64_write_out_phdrs,
3783 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3784 bfd_elf64_checksum_contents,
a85d7ed0 3785 bfd_elf64_write_relocs,
73ff0d56 3786 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3787 bfd_elf64_swap_symbol_out,
3788 bfd_elf64_slurp_reloc_table,
3789 bfd_elf64_slurp_symbol_table,
3790 bfd_elf64_swap_dyn_in,
3791 bfd_elf64_swap_dyn_out,
947216bf
AM		 3792 bfd_elf64_swap_reloc_in,
3793 bfd_elf64_swap_reloc_out,
3794 bfd_elf64_swap_reloca_in,
3795 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3796};
3797
6d00b590 3798#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3799#define TARGET_BIG_NAME "elf64-s390"
3800#define ELF_ARCH bfd_arch_s390
ae95ffa6 3801#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3802#define ELF_MACHINE_CODE EM_S390
3803#define ELF_MACHINE_ALT1 EM_S390_OLD
3804#define ELF_MAXPAGESIZE 0x1000
3805
3806#define elf_backend_size_info s390_elf64_size_info
3807
3808#define elf_backend_can_gc_sections 1
51b64d56 3809#define elf_backend_can_refcount 1
a85d7ed0
NC		 3810#define elf_backend_want_got_plt 1
3811#define elf_backend_plt_readonly 1
3812#define elf_backend_want_plt_sym 0
3813#define elf_backend_got_header_size 24
b491616a 3814#define elf_backend_rela_normal 1
a85d7ed0
NC		 3815
3816#define elf_info_to_howto elf_s390_info_to_howto
3817
a85d7ed0
NC		 3818#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3819#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3820#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3821#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0
NC		 3822
3823#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3824#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 3825#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3826#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 3827#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3828#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3829#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3830#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3831#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3832#define elf_backend_relocate_section elf_s390_relocate_section
3833#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3834#define elf_backend_init_index_section _bfd_elf_init_1_index_section
4c45e5c9 3835#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3836#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
a85d7ed0 3837
69fc87f1
MS		 3838#define bfd_elf64_mkobject elf_s390_mkobject
3839#define elf_backend_object_p elf_s390_object_p
a85d7ed0 3840
2c3fc389
NC		 3841/* Enable ELF64 archive functions. */
3842#define bfd_elf64_archive_functions
3843extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3844extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3845
3846#define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3847#define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3848#define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3849#define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3850#define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3851#define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3852#define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3853#define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3854#define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3855
a85d7ed0 3856#include "elf64-target.h"
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