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[deliverable/binutils-gdb.git] / bfd / elf64-s390.c
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a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
2571583a 2 Copyright (C) 2000-2017 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 27#include "elf/s390.h"
e3e9290d 28#include <stdarg.h>
a85d7ed0
NC		 29
30/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
31 from smaller values. Start with zero, widen, *then* decrement. */
32#define MINUS_ONE (((bfd_vma)0) - 1)
33
2c3fc389
NC		 34static bfd_reloc_status_type
35s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
36 asection *, bfd *, char **);
37static bfd_reloc_status_type
38s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
39 asection *, bfd *, char **);
40
a85d7ed0
NC		 41/* The relocation "howto" table. */
42static reloc_howto_type elf_howto_table[] =
43{
44 HOWTO (R_390_NONE, /* type */
45 0, /* rightshift */
6346d5ca 46 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 47 0, /* bitsize */
b34976b6 48 FALSE, /* pc_relative */
a85d7ed0
NC		 49 0, /* bitpos */
50 complain_overflow_dont, /* complain_on_overflow */
51 bfd_elf_generic_reloc, /* special_function */
52 "R_390_NONE", /* name */
b34976b6 53 FALSE, /* partial_inplace */
a85d7ed0
NC		 54 0, /* src_mask */
55 0, /* dst_mask */
b34976b6
AM		 56 FALSE), /* pcrel_offset */
57
5236c819
MS		 58 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
59 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
60 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
61 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
62 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
64 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
65 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
66 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 68 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 69 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
70 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
71 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
72 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
74 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
76 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
78 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
80 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
82 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
84 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
86 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
88 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
90 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
92 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
94 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
96 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
97 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
98 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
100 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
101 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
102 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
104 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
105 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
106 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
107 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
108 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
110 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
112 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
114 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
115 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
116 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
118 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
120 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
122 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
124 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
126 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
128 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 130 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
131 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
132 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
133 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
134 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
135 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
136 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
137 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
139 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
140 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
141 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
142 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
145 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
147 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
148 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
150 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
152 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
153 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
155 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
156 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
157 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
158 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
160 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
162 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
bd1ea41b
MS		 164 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
165 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
166 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
167 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
168 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
169 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
170 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
171 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 172 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
fb798c50
AK		 174 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
175 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
176 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
177 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
178 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
180 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
181 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 182};
183
184/* GNU extension to record C++ vtable hierarchy. */
185static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 186 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 187static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 188 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		 189
190static reloc_howto_type *
2c3fc389
NC		 191elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
192 bfd_reloc_code_real_type code)
a85d7ed0 193{
0451c93c
MS		 194 switch (code)
195 {
196 case BFD_RELOC_NONE:
197 return &elf_howto_table[(int) R_390_NONE];
198 case BFD_RELOC_8:
199 return &elf_howto_table[(int) R_390_8];
200 case BFD_RELOC_390_12:
201 return &elf_howto_table[(int) R_390_12];
202 case BFD_RELOC_16:
203 return &elf_howto_table[(int) R_390_16];
204 case BFD_RELOC_32:
205 return &elf_howto_table[(int) R_390_32];
206 case BFD_RELOC_CTOR:
207 return &elf_howto_table[(int) R_390_32];
208 case BFD_RELOC_32_PCREL:
209 return &elf_howto_table[(int) R_390_PC32];
210 case BFD_RELOC_390_GOT12:
211 return &elf_howto_table[(int) R_390_GOT12];
212 case BFD_RELOC_32_GOT_PCREL:
213 return &elf_howto_table[(int) R_390_GOT32];
214 case BFD_RELOC_390_PLT32:
215 return &elf_howto_table[(int) R_390_PLT32];
216 case BFD_RELOC_390_COPY:
217 return &elf_howto_table[(int) R_390_COPY];
218 case BFD_RELOC_390_GLOB_DAT:
219 return &elf_howto_table[(int) R_390_GLOB_DAT];
220 case BFD_RELOC_390_JMP_SLOT:
221 return &elf_howto_table[(int) R_390_JMP_SLOT];
222 case BFD_RELOC_390_RELATIVE:
223 return &elf_howto_table[(int) R_390_RELATIVE];
224 case BFD_RELOC_32_GOTOFF:
5236c819 225 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 226 case BFD_RELOC_390_GOTPC:
227 return &elf_howto_table[(int) R_390_GOTPC];
228 case BFD_RELOC_390_GOT16:
229 return &elf_howto_table[(int) R_390_GOT16];
230 case BFD_RELOC_16_PCREL:
231 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 232 case BFD_RELOC_390_PC12DBL:
233 return &elf_howto_table[(int) R_390_PC12DBL];
234 case BFD_RELOC_390_PLT12DBL:
235 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 236 case BFD_RELOC_390_PC16DBL:
237 return &elf_howto_table[(int) R_390_PC16DBL];
238 case BFD_RELOC_390_PLT16DBL:
239 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 240 case BFD_RELOC_390_PC24DBL:
241 return &elf_howto_table[(int) R_390_PC24DBL];
242 case BFD_RELOC_390_PLT24DBL:
243 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS		 244 case BFD_RELOC_390_PC32DBL:
245 return &elf_howto_table[(int) R_390_PC32DBL];
246 case BFD_RELOC_390_PLT32DBL:
247 return &elf_howto_table[(int) R_390_PLT32DBL];
248 case BFD_RELOC_390_GOTPCDBL:
249 return &elf_howto_table[(int) R_390_GOTPCDBL];
250 case BFD_RELOC_64:
251 return &elf_howto_table[(int) R_390_64];
252 case BFD_RELOC_64_PCREL:
253 return &elf_howto_table[(int) R_390_PC64];
254 case BFD_RELOC_390_GOT64:
255 return &elf_howto_table[(int) R_390_GOT64];
256 case BFD_RELOC_390_PLT64:
257 return &elf_howto_table[(int) R_390_PLT64];
258 case BFD_RELOC_390_GOTENT:
259 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 260 case BFD_RELOC_16_GOTOFF:
261 return &elf_howto_table[(int) R_390_GOTOFF16];
262 case BFD_RELOC_390_GOTOFF64:
263 return &elf_howto_table[(int) R_390_GOTOFF64];
264 case BFD_RELOC_390_GOTPLT12:
265 return &elf_howto_table[(int) R_390_GOTPLT12];
266 case BFD_RELOC_390_GOTPLT16:
267 return &elf_howto_table[(int) R_390_GOTPLT16];
268 case BFD_RELOC_390_GOTPLT32:
269 return &elf_howto_table[(int) R_390_GOTPLT32];
270 case BFD_RELOC_390_GOTPLT64:
271 return &elf_howto_table[(int) R_390_GOTPLT64];
272 case BFD_RELOC_390_GOTPLTENT:
273 return &elf_howto_table[(int) R_390_GOTPLTENT];
274 case BFD_RELOC_390_PLTOFF16:
275 return &elf_howto_table[(int) R_390_PLTOFF16];
276 case BFD_RELOC_390_PLTOFF32:
277 return &elf_howto_table[(int) R_390_PLTOFF32];
278 case BFD_RELOC_390_PLTOFF64:
279 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 280 case BFD_RELOC_390_TLS_LOAD:
281 return &elf_howto_table[(int) R_390_TLS_LOAD];
282 case BFD_RELOC_390_TLS_GDCALL:
283 return &elf_howto_table[(int) R_390_TLS_GDCALL];
284 case BFD_RELOC_390_TLS_LDCALL:
285 return &elf_howto_table[(int) R_390_TLS_LDCALL];
286 case BFD_RELOC_390_TLS_GD64:
287 return &elf_howto_table[(int) R_390_TLS_GD64];
288 case BFD_RELOC_390_TLS_GOTIE12:
289 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
290 case BFD_RELOC_390_TLS_GOTIE64:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
292 case BFD_RELOC_390_TLS_LDM64:
293 return &elf_howto_table[(int) R_390_TLS_LDM64];
294 case BFD_RELOC_390_TLS_IE64:
295 return &elf_howto_table[(int) R_390_TLS_IE64];
296 case BFD_RELOC_390_TLS_IEENT:
297 return &elf_howto_table[(int) R_390_TLS_IEENT];
298 case BFD_RELOC_390_TLS_LE64:
299 return &elf_howto_table[(int) R_390_TLS_LE64];
300 case BFD_RELOC_390_TLS_LDO64:
301 return &elf_howto_table[(int) R_390_TLS_LDO64];
302 case BFD_RELOC_390_TLS_DTPMOD:
303 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
304 case BFD_RELOC_390_TLS_DTPOFF:
305 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
306 case BFD_RELOC_390_TLS_TPOFF:
307 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 308 case BFD_RELOC_390_20:
309 return &elf_howto_table[(int) R_390_20];
310 case BFD_RELOC_390_GOT20:
311 return &elf_howto_table[(int) R_390_GOT20];
312 case BFD_RELOC_390_GOTPLT20:
313 return &elf_howto_table[(int) R_390_GOTPLT20];
314 case BFD_RELOC_390_TLS_GOTIE20:
315 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 316 case BFD_RELOC_390_IRELATIVE:
317 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 318 case BFD_RELOC_VTABLE_INHERIT:
319 return &elf64_s390_vtinherit_howto;
320 case BFD_RELOC_VTABLE_ENTRY:
321 return &elf64_s390_vtentry_howto;
0451c93c
MS		 322 default:
323 break;
324 }
a85d7ed0
NC		 325 return 0;
326}
327
157090f7
AM		 328static reloc_howto_type *
329elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
330 const char *r_name)
331{
332 unsigned int i;
333
334 for (i = 0;
335 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
336 i++)
337 if (elf_howto_table[i].name != NULL
338 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
339 return &elf_howto_table[i];
340
0bc7245a
JK		 341 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
342 return &elf64_s390_vtinherit_howto;
343 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
344 return &elf64_s390_vtentry_howto;
157090f7
AM		 345
346 return NULL;
347}
348
a85d7ed0
NC		 349/* We need to use ELF64_R_TYPE so we have our own copy of this function,
350 and elf64-s390.c has its own copy. */
351
352static void
2c3fc389
NC		 353elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
354 arelent *cache_ptr,
355 Elf_Internal_Rela *dst)
a85d7ed0 356{
d0fb9a8d
JJ		 357 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
358 switch (r_type)
a85d7ed0
NC		 359 {
360 case R_390_GNU_VTINHERIT:
361 cache_ptr->howto = &elf64_s390_vtinherit_howto;
362 break;
363
364 case R_390_GNU_VTENTRY:
365 cache_ptr->howto = &elf64_s390_vtentry_howto;
366 break;
367
368 default:
d0fb9a8d
JJ		 369 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
370 {
695344c0 371 /* xgettext:c-format */
4eca0228
AM		 372 _bfd_error_handler (_("%B: invalid relocation type %d"),
373 abfd, (int) r_type);
d0fb9a8d
JJ		 374 r_type = R_390_NONE;
375 }
376 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 377 }
a85d7ed0
NC		 378}
379
69fc87f1
MS		 380/* A relocation function which doesn't do anything. */
381static bfd_reloc_status_type
2c3fc389
NC		 382s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
383 arelent *reloc_entry,
384 asymbol *symbol ATTRIBUTE_UNUSED,
385 void * data ATTRIBUTE_UNUSED,
386 asection *input_section,
387 bfd *output_bfd,
388 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 389{
390 if (output_bfd)
391 reloc_entry->address += input_section->output_offset;
392 return bfd_reloc_ok;
393}
394
bd1ea41b
MS		 395/* Handle the large displacement relocs. */
396static bfd_reloc_status_type
2c3fc389
NC		 397s390_elf_ldisp_reloc (bfd *abfd,
398 arelent *reloc_entry,
399 asymbol *symbol,
400 void * data,
401 asection *input_section,
402 bfd *output_bfd,
403 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 404{
405 reloc_howto_type *howto = reloc_entry->howto;
406 bfd_vma relocation;
407 bfd_vma insn;
408
409 if (output_bfd != (bfd *) NULL
410 && (symbol->flags & BSF_SECTION_SYM) == 0
411 && (! howto->partial_inplace
412 || reloc_entry->addend == 0))
413 {
414 reloc_entry->address += input_section->output_offset;
415 return bfd_reloc_ok;
416 }
417 if (output_bfd != NULL)
418 return bfd_reloc_continue;
419
07515404 420 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 421 return bfd_reloc_outofrange;
422
423 relocation = (symbol->value
424 + symbol->section->output_section->vma
425 + symbol->section->output_offset);
426 relocation += reloc_entry->addend;
427 if (howto->pc_relative)
428 {
429 relocation -= (input_section->output_section->vma
430 + input_section->output_offset);
431 relocation -= reloc_entry->address;
432 }
433
68ffbac6 434 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 435 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
436 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
437
438 if ((bfd_signed_vma) relocation < - 0x80000
439 || (bfd_signed_vma) relocation > 0x7ffff)
440 return bfd_reloc_overflow;
441 else
442 return bfd_reloc_ok;
443}
444
b34976b6 445static bfd_boolean
2c3fc389 446elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 447{
448 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 449 return TRUE;
a85d7ed0
NC		 450
451 return _bfd_elf_is_local_label_name (abfd, name);
452}
453
454/* Functions for the 390 ELF linker. */
455
456/* The name of the dynamic interpreter. This is put in the .interp
457 section. */
458
87049b0d 459#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 460
64285810
MS		 461/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
462 copying dynamic variables from a shared lib into an app's dynbss
463 section, and instead use a dynamic relocation to point into the
464 shared lib. */
465#define ELIMINATE_COPY_RELOCS 1
466
a85d7ed0
NC		 467/* The size in bytes of the first entry in the procedure linkage table. */
468#define PLT_FIRST_ENTRY_SIZE 32
469/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 470#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 471
472#define GOT_ENTRY_SIZE 8
473
470b557a
AK		 474#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
475
a85d7ed0
NC		 476/* The first three entries in a procedure linkage table are reserved,
477 and the initial contents are unimportant (we zero them out).
478 Subsequent entries look like this. See the SVR4 ABI 386
479 supplement to see how this works. */
480
481/* For the s390, simple addr offset can only be 0 - 4096.
482 To use the full 16777216 TB address space, several instructions
483 are needed to load an address in a register and execute
484 a branch( or just saving the address)
485
99c79b2e 486 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 487
488/* The first 3 words in the GOT are then reserved.
489 Word 0 is the address of the dynamic table.
490 Word 1 is a pointer to a structure describing the object
491 Word 2 is used to point to the loader entry address.
492
493 The code for PLT entries looks like this:
494
495 The GOT holds the address in the PLT to be executed.
496 The loader then gets:
3b67f094
MK		 497 48(15) = Pointer to the structure describing the object.
498 56(15) = Offset in symbol table
a85d7ed0
NC		 499 The loader must then find the module where the function is
500 and insert the address in the GOT.
501
502 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
503 LG 1,0(1) # 6 bytes Load address from GOT in r1
504 BCR 15,1 # 2 bytes Jump to address
505 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
506 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
507 BRCL 15,-x # 6 bytes Jump to start of PLT
a7e28bbe 508 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 509
510 Total = 32 bytes per PLT entry
511 Fixup at offset 2: relative address to GOT entry
512 Fixup at offset 22: relative branch to PLT0
a7e28bbe 513 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 514
a7e28bbe
AK		 515 A 32 bit offset into the symbol table is enough. It allows for
516 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
517 object (the main program, any shared library) is limited to 4GB in
518 size. Having a .rela.plt of 2GB would already make the .plt
519 section bigger than 8GB. */
a85d7ed0 520
9aa17453
AK		 521static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
522 {
523 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
524 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
525 0x07, 0xf1, /* br %r1 */
526 0x0d, 0x10, /* basr %r1,%r0 */
527 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
528 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
529 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
530 };
a85d7ed0
NC		 531
532/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 533 from R1 onto the stack at 56(15) and the loader object info
534 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 535
536/* The first entry in the PLT:
537
538 PLT0:
539 STG 1,56(15) # r1 contains the offset into the symbol table
540 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
541 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
542 LG 1,16(1) # get entry address of loader
543 BCR 15,1 # jump to loader
544
545 Fixup at offset 8: relative address to start of GOT. */
546
9aa17453
AK		 547static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
548 {
549 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
550 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
551 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
552 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
553 0x07, 0xf1, /* br %r1 */
554 0x07, 0x00, /* nopr %r0 */
555 0x07, 0x00, /* nopr %r0 */
556 0x07, 0x00 /* nopr %r0 */
557 };
a85d7ed0 558
a85d7ed0
NC		 559
560/* s390 ELF linker hash entry. */
561
562struct elf_s390_link_hash_entry
563{
0451c93c 564 struct elf_link_hash_entry elf;
a85d7ed0 565
0451c93c 566 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 567 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 568
569 /* Number of GOTPLT references for a function. */
570 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 571
572#define GOT_UNKNOWN 0
573#define GOT_NORMAL 1
574#define GOT_TLS_GD 2
575#define GOT_TLS_IE 3
576#define GOT_TLS_IE_NLT 3
577 unsigned char tls_type;
470b557a
AK		 578
579 /* For pointer equality reasons we might need to change the symbol
580 type from STT_GNU_IFUNC to STT_FUNC together with its value and
581 section entry. So after alloc_dynrelocs only these values should
582 be used. In order to check whether a symbol is IFUNC use
583 s390_is_ifunc_symbol_p. */
584 bfd_vma ifunc_resolver_address;
585 asection *ifunc_resolver_section;
a85d7ed0
NC		 586};
587
69fc87f1
MS		 588#define elf_s390_hash_entry(ent) \
589 ((struct elf_s390_link_hash_entry *)(ent))
590
470b557a
AK		 591/* This structure represents an entry in the local PLT list needed for
592 local IFUNC symbols. */
593struct plt_entry
594{
595 /* The section of the local symbol.
596 Set in relocate_section and used in finish_dynamic_sections. */
597 asection *sec;
598
599 union
600 {
601 bfd_signed_vma refcount;
602 bfd_vma offset;
603 } plt;
604};
605
0ffa91dd
NC		 606/* NOTE: Keep this structure in sync with
607 the one declared in elf32-s390.c. */
69fc87f1
MS		 608struct elf_s390_obj_tdata
609{
610 struct elf_obj_tdata root;
611
470b557a
AK		 612 /* A local PLT is needed for ifunc symbols. */
613 struct plt_entry *local_plt;
614
0ffa91dd 615 /* TLS type for each local got entry. */
69fc87f1
MS		 616 char *local_got_tls_type;
617};
618
619#define elf_s390_tdata(abfd) \
620 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
621
470b557a
AK		 622#define elf_s390_local_plt(abfd) \
623 (elf_s390_tdata (abfd)->local_plt)
624
69fc87f1
MS		 625#define elf_s390_local_got_tls_type(abfd) \
626 (elf_s390_tdata (abfd)->local_got_tls_type)
627
0ffa91dd
NC		 628#define is_s390_elf(bfd) \
629 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
630 && elf_tdata (bfd) != NULL \
4dfe6ac6 631 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 632
69fc87f1 633static bfd_boolean
62d7a5f6 634elf_s390_mkobject (bfd *abfd)
69fc87f1 635{
0ffa91dd 636 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 637 S390_ELF_DATA);
69fc87f1
MS		 638}
639
640static bfd_boolean
2c3fc389 641elf_s390_object_p (bfd *abfd)
69fc87f1 642{
69fc87f1
MS		 643 /* Set the right machine number for an s390 elf32 file. */
644 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
645}
646
a85d7ed0
NC		 647/* s390 ELF linker hash table. */
648
649struct elf_s390_link_hash_table
650{
0451c93c 651 struct elf_link_hash_table elf;
a85d7ed0 652
0451c93c 653 /* Short-cuts to get to dynamic linker sections. */
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
ceada896
AA		 667#define elf_s390_hash_table(p) \
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
0451c93c
MS		 731/* Copy the extra info we tack onto an elf_link_hash_entry. */
732
733static void
2c3fc389
NC		 734elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
735 struct elf_link_hash_entry *dir,
736 struct elf_link_hash_entry *ind)
0451c93c
MS		 737{
738 struct elf_s390_link_hash_entry *edir, *eind;
739
740 edir = (struct elf_s390_link_hash_entry *) dir;
741 eind = (struct elf_s390_link_hash_entry *) ind;
742
743 if (eind->dyn_relocs != NULL)
744 {
745 if (edir->dyn_relocs != NULL)
746 {
00d8c7a9
AK		 747 struct elf_dyn_relocs **pp;
748 struct elf_dyn_relocs *p;
0451c93c 749
fcfa13d2 750 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 751 list. Merge any entries against the same section. */
752 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
753 {
00d8c7a9 754 struct elf_dyn_relocs *q;
0451c93c
MS		 755
756 for (q = edir->dyn_relocs; q != NULL; q = q->next)
757 if (q->sec == p->sec)
758 {
759 q->pc_count += p->pc_count;
760 q->count += p->count;
761 *pp = p->next;
762 break;
763 }
764 if (q == NULL)
765 pp = &p->next;
766 }
767 *pp = edir->dyn_relocs;
768 }
769
770 edir->dyn_relocs = eind->dyn_relocs;
771 eind->dyn_relocs = NULL;
772 }
773
69fc87f1
MS		 774 if (ind->root.type == bfd_link_hash_indirect
775 && dir->got.refcount <= 0)
776 {
777 edir->tls_type = eind->tls_type;
778 eind->tls_type = GOT_UNKNOWN;
779 }
780
64285810
MS		 781 if (ELIMINATE_COPY_RELOCS
782 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 783 && dir->dynamic_adjusted)
784 {
785 /* If called to transfer flags for a weakdef during processing
786 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
787 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 788 if (dir->versioned != versioned_hidden)
789 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 790 dir->ref_regular |= ind->ref_regular;
791 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
792 dir->needs_plt |= ind->needs_plt;
793 }
64285810 794 else
fcfa13d2 795 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 796}
a85d7ed0 797
69fc87f1 798static int
2c3fc389
NC		 799elf_s390_tls_transition (struct bfd_link_info *info,
800 int r_type,
801 int is_local)
69fc87f1 802{
0e1862bb 803 if (bfd_link_pic (info))
69fc87f1
MS		 804 return r_type;
805
806 switch (r_type)
807 {
808 case R_390_TLS_GD64:
809 case R_390_TLS_IE64:
810 if (is_local)
811 return R_390_TLS_LE64;
812 return R_390_TLS_IE64;
813 case R_390_TLS_GOTIE64:
814 if (is_local)
815 return R_390_TLS_LE64;
816 return R_390_TLS_GOTIE64;
817 case R_390_TLS_LDM64:
818 return R_390_TLS_LE64;
819 }
820
821 return r_type;
822}
823
a85d7ed0
NC		 824/* Look through the relocs for a section during the first phase, and
825 allocate space in the global offset table or procedure linkage
826 table. */
827
b34976b6 828static bfd_boolean
4dfe6ac6
NC		 829elf_s390_check_relocs (bfd *abfd,
830 struct bfd_link_info *info,
831 asection *sec,
832 const Elf_Internal_Rela *relocs)
a85d7ed0 833{
0451c93c 834 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 835 Elf_Internal_Shdr *symtab_hdr;
836 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 837 const Elf_Internal_Rela *rel;
838 const Elf_Internal_Rela *rel_end;
a85d7ed0 839 asection *sreloc;
5236c819 840 bfd_signed_vma *local_got_refcounts;
69fc87f1 841 int tls_type, old_tls_type;
a85d7ed0 842
0e1862bb 843 if (bfd_link_relocatable (info))
b34976b6 844 return TRUE;
a85d7ed0 845
0ffa91dd
NC		 846 BFD_ASSERT (is_s390_elf (abfd));
847
0451c93c 848 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 849 if (htab == NULL)
850 return FALSE;
851
0ffa91dd 852 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 853 sym_hashes = elf_sym_hashes (abfd);
5236c819 854 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 855
a85d7ed0
NC		 856 sreloc = NULL;
857
858 rel_end = relocs + sec->reloc_count;
859 for (rel = relocs; rel < rel_end; rel++)
860 {
69fc87f1 861 unsigned int r_type;
a85d7ed0
NC		 862 unsigned long r_symndx;
863 struct elf_link_hash_entry *h;
470b557a 864 Elf_Internal_Sym *isym;
a85d7ed0
NC		 865
866 r_symndx = ELF64_R_SYM (rel->r_info);
867
0451c93c
MS		 868 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
869 {
695344c0 870 /* xgettext:c-format */
4eca0228
AM		 871 _bfd_error_handler (_("%B: bad symbol index: %d"),
872 abfd, r_symndx);
b34976b6 873 return FALSE;
0451c93c
MS		 874 }
875
a85d7ed0 876 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 877 {
878 /* A local symbol. */
879 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
880 abfd, r_symndx);
881 if (isym == NULL)
882 return FALSE;
883
884 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
885 {
886 struct plt_entry *plt;
887
0cb79d69
AK		 888 if (htab->elf.dynobj == NULL)
889 htab->elf.dynobj = abfd;
890
470b557a
AK		 891 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
892 return FALSE;
893
894 if (local_got_refcounts == NULL)
895 {
896 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
897 return FALSE;
898 local_got_refcounts = elf_local_got_refcounts (abfd);
899 }
900 plt = elf_s390_local_plt (abfd);
901 plt[r_symndx].plt.refcount++;
902 }
903 h = NULL;
904 }
a85d7ed0 905 else
973a3492
L		 906 {
907 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
908 while (h->root.type == bfd_link_hash_indirect
909 || h->root.type == bfd_link_hash_warning)
910 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 911
912 /* PR15323, ref flags aren't set for references in the same
913 object. */
914 h->root.non_ir_ref = 1;
973a3492 915 }
a85d7ed0 916
5236c819
MS		 917 /* Create got section and local_got_refcounts array if they
918 are needed. */
69fc87f1
MS		 919 r_type = elf_s390_tls_transition (info,
920 ELF64_R_TYPE (rel->r_info),
921 h == NULL);
922 switch (r_type)
a85d7ed0
NC		 923 {
924 case R_390_GOT12:
947216bf 925 case R_390_GOT16:
bd1ea41b 926 case R_390_GOT20:
a85d7ed0
NC		 927 case R_390_GOT32:
928 case R_390_GOT64:
929 case R_390_GOTENT:
5236c819
MS		 930 case R_390_GOTPLT12:
931 case R_390_GOTPLT16:
bd1ea41b 932 case R_390_GOTPLT20:
5236c819
MS		 933 case R_390_GOTPLT32:
934 case R_390_GOTPLT64:
935 case R_390_GOTPLTENT:
69fc87f1
MS		 936 case R_390_TLS_GD64:
937 case R_390_TLS_GOTIE12:
bd1ea41b 938 case R_390_TLS_GOTIE20:
69fc87f1
MS		 939 case R_390_TLS_GOTIE64:
940 case R_390_TLS_IEENT:
941 case R_390_TLS_IE64:
942 case R_390_TLS_LDM64:
5236c819
MS		 943 if (h == NULL
944 && local_got_refcounts == NULL)
a85d7ed0 945 {
470b557a 946 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 947 return FALSE;
470b557a 948 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 949 }
470b557a 950
5236c819
MS		 951 /* Fall through. */
952 case R_390_GOTOFF16:
953 case R_390_GOTOFF32:
954 case R_390_GOTOFF64:
0451c93c
MS		 955 case R_390_GOTPC:
956 case R_390_GOTPCDBL:
f41345a7 957 if (htab->elf.sgot == NULL)
0451c93c
MS		 958 {
959 if (htab->elf.dynobj == NULL)
960 htab->elf.dynobj = abfd;
ce558b89 961 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 962 return FALSE;
0451c93c 963 }
5236c819
MS		 964 }
965
470b557a
AK		 966 if (h != NULL)
967 {
968 if (htab->elf.dynobj == NULL)
969 htab->elf.dynobj = abfd;
970 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
971 return FALSE;
972
973 /* Make sure an IFUNC symbol defined in a non-shared object
974 always gets a PLT slot. */
975 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
976 {
977 /* The symbol is called by the dynamic loader in order
978 to resolve the relocation. So it is in fact also
979 referenced. */
980 h->ref_regular = 1;
981 h->needs_plt = 1;
982 }
983 }
984
69fc87f1 985 switch (r_type)
5236c819 986 {
5236c819
MS		 987 case R_390_GOTPC:
988 case R_390_GOTPCDBL:
470b557a
AK		 989 /* These relocs do not need a GOT slot. They just load the
990 GOT pointer itself or address something else relative to
991 the GOT. Since the GOT pointer has been set up above we
992 are done. */
0451c93c 993 break;
d47b13e0
AK		 994 case R_390_GOTOFF16:
995 case R_390_GOTOFF32:
996 case R_390_GOTOFF64:
997 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
998 break;
1a0670f3 999 /* Fall through. */
ec338859 1000
fb798c50 1001 case R_390_PLT12DBL:
947216bf 1002 case R_390_PLT16DBL:
fb798c50 1003 case R_390_PLT24DBL:
a85d7ed0
NC		 1004 case R_390_PLT32:
1005 case R_390_PLT32DBL:
1006 case R_390_PLT64:
5236c819
MS		 1007 case R_390_PLTOFF16:
1008 case R_390_PLTOFF32:
1009 case R_390_PLTOFF64:
a85d7ed0 1010 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1011 actually build the entry in adjust_dynamic_symbol,
1012 because this might be a case of linking PIC code which is
1013 never referenced by a dynamic object, in which case we
1014 don't need to generate a procedure linkage table entry
1015 after all. */
ec338859 1016
a85d7ed0 1017 /* If this is a local symbol, we resolve it directly without
947216bf 1018 creating a procedure linkage table entry. */
5236c819
MS		 1019 if (h != NULL)
1020 {
f5385ebf 1021 h->needs_plt = 1;
5236c819
MS		 1022 h->plt.refcount += 1;
1023 }
1024 break;
ec338859 1025
5236c819
MS		 1026 case R_390_GOTPLT12:
1027 case R_390_GOTPLT16:
bd1ea41b 1028 case R_390_GOTPLT20:
5236c819
MS		 1029 case R_390_GOTPLT32:
1030 case R_390_GOTPLT64:
1031 case R_390_GOTPLTENT:
1032 /* This symbol requires either a procedure linkage table entry
1033 or an entry in the local got. We actually build the entry
1034 in adjust_dynamic_symbol because whether this is really a
1035 global reference can change and with it the fact if we have
1036 to create a plt entry or a local got entry. To be able to
1037 make a once global symbol a local one we have to keep track
1038 of the number of gotplt references that exist for this
1039 symbol. */
1040 if (h != NULL)
1041 {
1042 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1043 h->needs_plt = 1;
5236c819
MS		 1044 h->plt.refcount += 1;
1045 }
69fc87f1
MS		 1046 else
1047 local_got_refcounts[r_symndx] += 1;
1048 break;
1049
1050 case R_390_TLS_LDM64:
1051 htab->tls_ldm_got.refcount += 1;
1052 break;
1053
1054 case R_390_TLS_IE64:
1055 case R_390_TLS_GOTIE12:
bd1ea41b 1056 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1057 case R_390_TLS_GOTIE64:
1058 case R_390_TLS_IEENT:
0e1862bb 1059 if (bfd_link_pic (info))
69fc87f1
MS		 1060 info->flags |= DF_STATIC_TLS;
1061 /* Fall through */
1062
1063 case R_390_GOT12:
26e41594 1064 case R_390_GOT16:
bd1ea41b 1065 case R_390_GOT20:
69fc87f1
MS		 1066 case R_390_GOT32:
1067 case R_390_GOT64:
1068 case R_390_GOTENT:
1069 case R_390_TLS_GD64:
1070 /* This symbol requires a global offset table entry. */
1071 switch (r_type)
1072 {
1073 default:
1074 case R_390_GOT12:
1075 case R_390_GOT16:
bd1ea41b 1076 case R_390_GOT20:
69fc87f1
MS		 1077 case R_390_GOT32:
1078 case R_390_GOTENT:
1079 tls_type = GOT_NORMAL;
1080 break;
1081 case R_390_TLS_GD64:
1082 tls_type = GOT_TLS_GD;
1083 break;
1084 case R_390_TLS_IE64:
1085 case R_390_TLS_GOTIE64:
1086 tls_type = GOT_TLS_IE;
1087 break;
1088 case R_390_TLS_GOTIE12:
bd1ea41b 1089 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1090 case R_390_TLS_IEENT:
1091 tls_type = GOT_TLS_IE_NLT;
1092 break;
1093 }
1094
1095 if (h != NULL)
1096 {
1097 h->got.refcount += 1;
1098 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1099 }
5236c819
MS		 1100 else
1101 {
1102 local_got_refcounts[r_symndx] += 1;
69fc87f1 1103 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1104 }
69fc87f1
MS		 1105 /* If a TLS symbol is accessed using IE at least once,
1106 there is no point to use dynamic model for it. */
1107 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1108 {
1109 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1110 {
4eca0228 1111 _bfd_error_handler
695344c0 1112 /* xgettext:c-format */
d003868e
AM		 1113 (_("%B: `%s' accessed both as normal and thread local symbol"),
1114 abfd, h->root.root.string);
69fc87f1
MS		 1115 return FALSE;
1116 }
1117 if (old_tls_type > tls_type)
1118 tls_type = old_tls_type;
1119 }
1120
1121 if (old_tls_type != tls_type)
1122 {
1123 if (h != NULL)
1124 elf_s390_hash_entry (h)->tls_type = tls_type;
1125 else
1126 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1127 }
1128
1129 if (r_type != R_390_TLS_IE64)
1130 break;
1131 /* Fall through */
1132
1133 case R_390_TLS_LE64:
e00d879a
AK		 1134 /* For static linking and executables this reloc will be
1135 calculated at linktime otherwise a TLS_TPOFF runtime
1136 reloc will be generated. */
0e1862bb 1137 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1138 break;
1139
0e1862bb 1140 if (!bfd_link_pic (info))
69fc87f1
MS		 1141 break;
1142 info->flags |= DF_STATIC_TLS;
1143 /* Fall through */
ec338859 1144
947216bf
AM		 1145 case R_390_8:
1146 case R_390_16:
a85d7ed0
NC		 1147 case R_390_32:
1148 case R_390_64:
fb798c50 1149 case R_390_PC12DBL:
947216bf
AM		 1150 case R_390_PC16:
1151 case R_390_PC16DBL:
fb798c50 1152 case R_390_PC24DBL:
a85d7ed0
NC		 1153 case R_390_PC32:
1154 case R_390_PC32DBL:
1155 case R_390_PC64:
99ba5125 1156 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1157 {
1158 /* If this reloc is in a read-only section, we might
1159 need a copy reloc. We can't check reliably at this
1160 stage whether the section is read-only, as input
1161 sections have not yet been mapped to output sections.
1162 Tentatively set the flag for now, and correct in
1163 adjust_dynamic_symbol. */
f5385ebf 1164 h->non_got_ref = 1;
ec338859 1165
0e1862bb 1166 if (!bfd_link_pic (info))
470b557a
AK		 1167 {
1168 /* We may need a .plt entry if the function this reloc
1169 refers to is in a shared lib. */
1170 h->plt.refcount += 1;
1171 }
0451c93c 1172 }
ec338859 1173
a85d7ed0 1174 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1175 against a global symbol, or a non PC relative reloc
1176 against a local symbol, then we need to copy the reloc
1177 into the shared library. However, if we are linking with
1178 -Bsymbolic, we do not need to copy a reloc against a
1179 global symbol which is defined in an object we are
1180 including in the link (i.e., DEF_REGULAR is set). At
1181 this point we have not seen all the input files, so it is
1182 possible that DEF_REGULAR is not set now but will be set
1183 later (it is never cleared). In case of a weak definition,
1184 DEF_REGULAR may be cleared later by a strong definition in
1185 a shared library. We account for that possibility below by
1186 storing information in the relocs_copied field of the hash
1187 table entry. A similar situation occurs when creating
1188 shared libraries and symbol visibility changes render the
1189 symbol local.
1190
1191 If on the other hand, we are creating an executable, we
1192 may need to keep relocations for symbols satisfied by a
1193 dynamic library if we manage to avoid copy relocs for the
1194 symbol. */
0e1862bb 1195 if ((bfd_link_pic (info)
0451c93c
MS		 1196 && (sec->flags & SEC_ALLOC) != 0
1197 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1198 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1199 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1200 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1201 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1202 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1203 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1204 || (h != NULL
8c21ca21 1205 && (! SYMBOLIC_BIND (info, h)
0451c93c 1206 || h->root.type == bfd_link_hash_defweak
f5385ebf 1207 || !h->def_regular))))
64285810 1208 || (ELIMINATE_COPY_RELOCS
0e1862bb 1209 && !bfd_link_pic (info)
0451c93c
MS		 1210 && (sec->flags & SEC_ALLOC) != 0
1211 && h != NULL
1212 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1213 || !h->def_regular)))
a85d7ed0 1214 {
00d8c7a9
AK		 1215 struct elf_dyn_relocs *p;
1216 struct elf_dyn_relocs **head;
ec338859 1217
0451c93c
MS		 1218 /* We must copy these reloc types into the output file.
1219 Create a reloc section in dynobj and make room for
1220 this reloc. */
a85d7ed0
NC		 1221 if (sreloc == NULL)
1222 {
440e9cd2
AK		 1223 if (htab->elf.dynobj == NULL)
1224 htab->elf.dynobj = abfd;
1225
83bac4b0
NC		 1226 sreloc = _bfd_elf_make_dynamic_reloc_section
1227 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1228
a85d7ed0 1229 if (sreloc == NULL)
83bac4b0 1230 return FALSE;
a85d7ed0 1231 }
ec338859 1232
0451c93c
MS		 1233 /* If this is a global symbol, we count the number of
1234 relocations we need for this symbol. */
1235 if (h != NULL)
a85d7ed0 1236 {
ec338859 1237 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1238 }
1239 else
1240 {
ec338859
AM		 1241 /* Track dynamic relocs needed for local syms too.
1242 We really need local syms available to do this
1243 easily. Oh well. */
ec338859 1244 asection *s;
6edfbbad
DJ		 1245 void *vpp;
1246
87d72d41
AM		 1247 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1248 abfd, r_symndx);
1249 if (isym == NULL)
b34976b6 1250 return FALSE;
ec338859 1251
87d72d41
AM		 1252 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1253 if (s == NULL)
1254 s = sec;
1255
6edfbbad 1256 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1257 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1258 }
1259
1260 p = *head;
1261 if (p == NULL || p->sec != sec)
1262 {
1263 bfd_size_type amt = sizeof *p;
00d8c7a9 1264 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1265 bfd_alloc (htab->elf.dynobj, amt));
1266 if (p == NULL)
b34976b6 1267 return FALSE;
ec338859
AM		 1268 p->next = *head;
1269 *head = p;
1270 p->sec = sec;
1271 p->count = 0;
1272 p->pc_count = 0;
a85d7ed0 1273 }
ec338859
AM		 1274
1275 p->count += 1;
1276 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1277 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1278 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1279 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1280 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1281 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1282 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1283 p->pc_count += 1;
a85d7ed0 1284 }
a85d7ed0 1285 break;
ec338859 1286
a85d7ed0
NC		 1287 /* This relocation describes the C++ object vtable hierarchy.
1288 Reconstruct it for later use during GC. */
947216bf 1289 case R_390_GNU_VTINHERIT:
c152c796 1290 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1291 return FALSE;
947216bf 1292 break;
ec338859 1293
a85d7ed0
NC		 1294 /* This relocation describes which C++ vtable entries are actually
1295 used. Record for later use during GC. */
947216bf 1296 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1297 BFD_ASSERT (h != NULL);
1298 if (h != NULL
1299 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1300 return FALSE;
947216bf 1301 break;
ec338859 1302
a85d7ed0
NC		 1303 default:
1304 break;
1305 }
1306 }
1307
b34976b6 1308 return TRUE;
a85d7ed0
NC		 1309}
1310
1311/* Return the section that should be marked against GC for a given
1312 relocation. */
1313
1314static asection *
07adf181
AM		 1315elf_s390_gc_mark_hook (asection *sec,
1316 struct bfd_link_info *info,
1317 Elf_Internal_Rela *rel,
1318 struct elf_link_hash_entry *h,
1319 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1320{
1321 if (h != NULL)
07adf181
AM		 1322 switch (ELF64_R_TYPE (rel->r_info))
1323 {
1324 case R_390_GNU_VTINHERIT:
1325 case R_390_GNU_VTENTRY:
1326 return NULL;
1327 }
1328
1329 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1330}
1331
1332/* Update the got entry reference counts for the section being removed. */
1333
b34976b6 1334static bfd_boolean
07adf181
AM		 1335elf_s390_gc_sweep_hook (bfd *abfd,
1336 struct bfd_link_info *info,
1337 asection *sec,
1338 const Elf_Internal_Rela *relocs)
a85d7ed0 1339{
4dfe6ac6 1340 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1341 Elf_Internal_Shdr *symtab_hdr;
1342 struct elf_link_hash_entry **sym_hashes;
1343 bfd_signed_vma *local_got_refcounts;
1344 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1345
0e1862bb 1346 if (bfd_link_relocatable (info))
7dda2462
TG		 1347 return TRUE;
1348
4dfe6ac6
NC		 1349 htab = elf_s390_hash_table (info);
1350 if (htab == NULL)
1351 return FALSE;
1352
ec338859 1353 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1354
0ffa91dd 1355 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1356 sym_hashes = elf_sym_hashes (abfd);
1357 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1358
1359 relend = relocs + sec->reloc_count;
1360 for (rel = relocs; rel < relend; rel++)
5236c819 1361 {
26e41594
AM		 1362 unsigned long r_symndx;
1363 unsigned int r_type;
1364 struct elf_link_hash_entry *h = NULL;
1365
5236c819 1366 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1367 if (r_symndx >= symtab_hdr->sh_info)
1368 {
1369 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1370 struct elf_dyn_relocs **pp;
1371 struct elf_dyn_relocs *p;
5236c819 1372
26e41594 1373 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1374 while (h->root.type == bfd_link_hash_indirect
1375 || h->root.type == bfd_link_hash_warning)
1376 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1377 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1378
26e41594
AM		 1379 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1380 if (p->sec == sec)
1381 {
1382 /* Everything must go for SEC. */
1383 *pp = p->next;
1384 break;
1385 }
1386 }
470b557a
AK		 1387 else
1388 {
1389 Elf_Internal_Sym *isym;
1390
1391 /* A local symbol. */
1392 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1393 abfd, r_symndx);
1394 if (isym == NULL)
1395 return FALSE;
1396
1397 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1398 {
1399 struct plt_entry *plt = elf_s390_local_plt (abfd);
1400 if (plt[r_symndx].plt.refcount > 0)
1401 plt[r_symndx].plt.refcount--;
1402 }
1403 }
26e41594
AM		 1404
1405 r_type = ELF64_R_TYPE (rel->r_info);
1406 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1407 switch (r_type)
5236c819 1408 {
69fc87f1 1409 case R_390_TLS_LDM64:
4dfe6ac6
NC		 1410 if (htab->tls_ldm_got.refcount > 0)
1411 htab->tls_ldm_got.refcount -= 1;
69fc87f1 1412 break;
ef05be83
AK		 1413 case R_390_GOTOFF16:
1414 case R_390_GOTOFF32:
1415 case R_390_GOTOFF64:
d47b13e0
AK		 1416 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1417 {
1418 h->plt.refcount--;
1419 break;
1420 }
1421
ef05be83
AK		 1422 case R_390_GOTPC:
1423 case R_390_GOTPCDBL:
1424 break;
69fc87f1
MS		 1425
1426 case R_390_TLS_GD64:
1427 case R_390_TLS_IE64:
1428 case R_390_TLS_GOTIE12:
bd1ea41b 1429 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1430 case R_390_TLS_GOTIE64:
1431 case R_390_TLS_IEENT:
5236c819
MS		 1432 case R_390_GOT12:
1433 case R_390_GOT16:
bd1ea41b 1434 case R_390_GOT20:
5236c819
MS		 1435 case R_390_GOT32:
1436 case R_390_GOT64:
5236c819
MS		 1437 case R_390_GOTENT:
1438 if (h != NULL)
1439 {
1440 if (h->got.refcount > 0)
1441 h->got.refcount -= 1;
1442 }
1443 else if (local_got_refcounts != NULL)
1444 {
1445 if (local_got_refcounts[r_symndx] > 0)
1446 local_got_refcounts[r_symndx] -= 1;
1447 }
26e41594 1448 break;
a85d7ed0 1449
5236c819
MS		 1450 case R_390_8:
1451 case R_390_12:
1452 case R_390_16:
bd1ea41b 1453 case R_390_20:
5236c819
MS		 1454 case R_390_32:
1455 case R_390_64:
1456 case R_390_PC16:
fb798c50 1457 case R_390_PC12DBL:
5236c819 1458 case R_390_PC16DBL:
fb798c50 1459 case R_390_PC24DBL:
5236c819
MS		 1460 case R_390_PC32:
1461 case R_390_PC32DBL:
1462 case R_390_PC64:
0e1862bb 1463 if (bfd_link_pic (info))
26e41594
AM		 1464 break;
1465 /* Fall through */
a85d7ed0 1466
fb798c50 1467 case R_390_PLT12DBL:
69fc87f1 1468 case R_390_PLT16DBL:
fb798c50 1469 case R_390_PLT24DBL:
69fc87f1
MS		 1470 case R_390_PLT32:
1471 case R_390_PLT32DBL:
1472 case R_390_PLT64:
1473 case R_390_PLTOFF16:
1474 case R_390_PLTOFF32:
1475 case R_390_PLTOFF64:
1476 if (h != NULL)
1477 {
1478 if (h->plt.refcount > 0)
1479 h->plt.refcount -= 1;
1480 }
1481 break;
1482
1483 case R_390_GOTPLT12:
1484 case R_390_GOTPLT16:
bd1ea41b 1485 case R_390_GOTPLT20:
69fc87f1
MS		 1486 case R_390_GOTPLT32:
1487 case R_390_GOTPLT64:
1488 case R_390_GOTPLTENT:
1489 if (h != NULL)
1490 {
1491 if (h->plt.refcount > 0)
1492 {
1493 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1494 h->plt.refcount -= 1;
1495 }
1496 }
1497 else if (local_got_refcounts != NULL)
1498 {
1499 if (local_got_refcounts[r_symndx] > 0)
1500 local_got_refcounts[r_symndx] -= 1;
1501 }
1502 break;
1503
5236c819
MS		 1504 default:
1505 break;
1506 }
1507 }
a85d7ed0 1508
b34976b6 1509 return TRUE;
a85d7ed0
NC		 1510}
1511
5236c819
MS		 1512/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1513 entry but we found we will not create any. Called when we find we will
1514 not have any PLT for this symbol, by for example
1515 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1516 or elf_s390_size_dynamic_sections if no dynamic sections will be
1517 created (we're only linking static objects). */
1518
1519static void
2c3fc389 1520elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1521{
1522 if (h->elf.root.type == bfd_link_hash_warning)
1523 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1524
1525 if (h->gotplt_refcount <= 0)
1526 return;
1527
1528 /* We simply add the number of gotplt references to the number
1529 * of got references for this symbol. */
1530 h->elf.got.refcount += h->gotplt_refcount;
1531 h->gotplt_refcount = -1;
1532}
1533
a85d7ed0
NC		 1534/* Adjust a symbol defined by a dynamic object and referenced by a
1535 regular object. The current definition is in some section of the
1536 dynamic object, but we're not including those sections. We have to
1537 change the definition to something the rest of the link can
1538 understand. */
1539
b34976b6 1540static bfd_boolean
4dfe6ac6
NC		 1541elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1542 struct elf_link_hash_entry *h)
a85d7ed0 1543{
0451c93c 1544 struct elf_s390_link_hash_table *htab;
5474d94f 1545 asection *s, *srel;
a85d7ed0 1546
470b557a
AK		 1547 /* STT_GNU_IFUNC symbol must go through PLT. */
1548 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1549 {
1550 /* All local STT_GNU_IFUNC references must be treated as local
1551 calls via local PLT. */
1552 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1553 {
1554 bfd_size_type pc_count = 0, count = 0;
1555 struct elf_dyn_relocs **pp;
1556 struct elf_s390_link_hash_entry *eh;
1557 struct elf_dyn_relocs *p;
1558
1559 eh = (struct elf_s390_link_hash_entry *) h;
1560 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1561 {
1562 pc_count += p->pc_count;
1563 p->count -= p->pc_count;
1564 p->pc_count = 0;
1565 count += p->count;
1566 if (p->count == 0)
1567 *pp = p->next;
1568 else
1569 pp = &p->next;
1570 }
1571
1572 if (pc_count || count)
1573 {
1574 h->needs_plt = 1;
1575 h->non_got_ref = 1;
1576 if (h->plt.refcount <= 0)
1577 h->plt.refcount = 1;
1578 else
1579 h->plt.refcount += 1;
1580 }
1581 }
1582
1583 if (h->plt.refcount <= 0)
1584 {
1585 h->plt.offset = (bfd_vma) -1;
1586 h->needs_plt = 0;
1587 }
1588 return TRUE;
1589 }
470b557a 1590
a85d7ed0
NC		 1591 /* If this is a function, put it in the procedure linkage table. We
1592 will fill in the contents of the procedure linkage table later
cedb70c5 1593 (although we could actually do it here). */
a85d7ed0 1594 if (h->type == STT_FUNC
f5385ebf 1595 || h->needs_plt)
a85d7ed0 1596 {
0451c93c 1597 if (h->plt.refcount <= 0
8c21ca21
AK		 1598 || SYMBOL_CALLS_LOCAL (info, h)
1599 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1600 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1601 {
1602 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1603 file, but the symbol was never referred to by a dynamic
1604 object, or if all references were garbage collected. In
0451c93c
MS		 1605 such a case, we don't actually need to build a procedure
1606 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1607 h->plt.offset = (bfd_vma) -1;
f5385ebf 1608 h->needs_plt = 0;
5236c819 1609 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1610 }
1611
b34976b6 1612 return TRUE;
a85d7ed0 1613 }
bbd7ec4a 1614 else
0451c93c
MS		 1615 /* It's possible that we incorrectly decided a .plt reloc was
1616 needed for an R_390_PC32 reloc to a non-function sym in
1617 check_relocs. We can't decide accurately between function and
1618 non-function syms in check-relocs; Objects loaded later in
1619 the link may change h->type. So fix it now. */
bbd7ec4a 1620 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1621
1622 /* If this is a weak symbol, and there is a real definition, the
1623 processor independent code will have arranged for us to see the
1624 real definition first, and we can just use the same value. */
f6e332e6 1625 if (h->u.weakdef != NULL)
a85d7ed0 1626 {
f6e332e6
AM		 1627 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1628 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1629 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1630 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1631 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1632 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1633 return TRUE;
a85d7ed0
NC		 1634 }
1635
1636 /* This is a reference to a symbol defined by a dynamic object which
1637 is not a function. */
1638
1639 /* If we are creating a shared library, we must presume that the
1640 only references to the symbol are via the global offset table.
1641 For such cases we need not do anything here; the relocations will
1642 be handled correctly by relocate_section. */
0e1862bb 1643 if (bfd_link_pic (info))
b34976b6 1644 return TRUE;
a85d7ed0
NC		 1645
1646 /* If there are no references to this symbol that do not use the
1647 GOT, we don't need to generate a copy reloc. */
f5385ebf 1648 if (!h->non_got_ref)
b34976b6 1649 return TRUE;
a85d7ed0 1650
0451c93c
MS		 1651 /* If -z nocopyreloc was given, we won't generate them either. */
1652 if (info->nocopyreloc)
1653 {
f5385ebf 1654 h->non_got_ref = 0;
b34976b6 1655 return TRUE;
0451c93c
MS		 1656 }
1657
64285810 1658 if (ELIMINATE_COPY_RELOCS)
0451c93c 1659 {
64285810 1660 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1661 struct elf_dyn_relocs *p;
0451c93c 1662
64285810
MS		 1663 eh = (struct elf_s390_link_hash_entry *) h;
1664 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1665 {
1666 s = p->sec->output_section;
1667 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1668 break;
1669 }
1670
1671 /* If we didn't find any dynamic relocs in read-only sections, then
1672 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1673 if (p == NULL)
1674 {
f5385ebf 1675 h->non_got_ref = 0;
64285810
MS		 1676 return TRUE;
1677 }
0451c93c
MS		 1678 }
1679
a85d7ed0
NC		 1680 /* We must allocate the symbol in our .dynbss section, which will
1681 become part of the .bss section of the executable. There will be
1682 an entry for this symbol in the .dynsym section. The dynamic
1683 object will contain position independent code, so all references
1684 from the dynamic object to this symbol will go through the global
1685 offset table. The dynamic linker will use the .dynsym entry to
1686 determine the address it must put in the global offset table, so
1687 both the dynamic object and the regular object will refer to the
1688 same memory location for the variable. */
1689
0451c93c 1690 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1691 if (htab == NULL)
1692 return FALSE;
a85d7ed0 1693
0451c93c
MS		 1694 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1695 copy the initial value out of the dynamic object and into the
1696 runtime process image. */
5474d94f
AM		 1697 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1698 {
1699 s = htab->elf.sdynrelro;
1700 srel = htab->elf.sreldynrelro;
1701 }
1702 else
1703 {
1704 s = htab->elf.sdynbss;
1705 srel = htab->elf.srelbss;
1706 }
1d7e9d18 1707 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1708 {
5474d94f 1709 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1710 h->needs_copy = 1;
a85d7ed0
NC		 1711 }
1712
6cabe1ea 1713 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1714}
1715
0451c93c
MS		 1716/* Allocate space in .plt, .got and associated reloc sections for
1717 dynamic relocs. */
1718
b34976b6 1719static bfd_boolean
4dfe6ac6
NC		 1720allocate_dynrelocs (struct elf_link_hash_entry *h,
1721 void * inf)
0451c93c
MS		 1722{
1723 struct bfd_link_info *info;
1724 struct elf_s390_link_hash_table *htab;
470b557a 1725 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1726 struct elf_dyn_relocs *p;
0451c93c 1727
e92d460e 1728 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1729 return TRUE;
0451c93c
MS		 1730
1731 info = (struct bfd_link_info *) inf;
1732 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1733 if (htab == NULL)
1734 return FALSE;
0451c93c 1735
470b557a
AK		 1736 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1737 here if it is defined and referenced in a non-shared object. */
1738 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1739 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1740 else if (htab->elf.dynamic_sections_created
1741 && h->plt.refcount > 0)
0451c93c
MS		 1742 {
1743 /* Make sure this symbol is output as a dynamic symbol.
1744 Undefined weak syms won't yet be marked as dynamic. */
1745 if (h->dynindx == -1
f5385ebf 1746 && !h->forced_local)
0451c93c 1747 {
c152c796 1748 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1749 return FALSE;
0451c93c
MS		 1750 }
1751
0e1862bb 1752 if (bfd_link_pic (info)
4ec72bde 1753 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1754 {
f41345a7 1755 asection *s = htab->elf.splt;
0451c93c
MS		 1756
1757 /* If this is the first .plt entry, make room for the special
1758 first entry. */
eea6121a
AM		 1759 if (s->size == 0)
1760 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1761
eea6121a 1762 h->plt.offset = s->size;
0451c93c
MS		 1763
1764 /* If this symbol is not defined in a regular file, and we are
1765 not generating a shared library, then set the symbol to this
1766 location in the .plt. This is required to make function
1767 pointers compare as equal between the normal executable and
1768 the shared library. */
0e1862bb 1769 if (! bfd_link_pic (info)
f5385ebf 1770 && !h->def_regular)
0451c93c
MS		 1771 {
1772 h->root.u.def.section = s;
1773 h->root.u.def.value = h->plt.offset;
1774 }
ec338859 1775
0451c93c 1776 /* Make room for this entry. */
eea6121a 1777 s->size += PLT_ENTRY_SIZE;
ec338859 1778
0451c93c
MS		 1779 /* We also need to make an entry in the .got.plt section, which
1780 will be placed in the .got section by the linker script. */
f41345a7 1781 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1782
1783 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1784 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1785 }
1786 else
1787 {
1788 h->plt.offset = (bfd_vma) -1;
f5385ebf 1789 h->needs_plt = 0;
5236c819 1790 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1791 }
1792 }
1793 else
1794 {
1795 h->plt.offset = (bfd_vma) -1;
f5385ebf 1796 h->needs_plt = 0;
5236c819 1797 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1798 }
1799
69fc87f1
MS		 1800 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1801 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1802 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1803 we can save the dynamic TLS relocation. */
1804 if (h->got.refcount > 0
0e1862bb 1805 && !bfd_link_pic (info)
69fc87f1
MS		 1806 && h->dynindx == -1
1807 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1808 {
1809 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1810 /* For the GOTIE access without a literal pool entry the offset has
1811 to be stored somewhere. The immediate value in the instruction
1812 is not bit enough so the value is stored in the got. */
1813 {
f41345a7
AK		 1814 h->got.offset = htab->elf.sgot->size;
1815 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1816 }
1817 else
1818 h->got.offset = (bfd_vma) -1;
1819 }
1820 else if (h->got.refcount > 0)
0451c93c
MS		 1821 {
1822 asection *s;
b34976b6 1823 bfd_boolean dyn;
69fc87f1 1824 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1825
1826 /* Make sure this symbol is output as a dynamic symbol.
1827 Undefined weak syms won't yet be marked as dynamic. */
1828 if (h->dynindx == -1
f5385ebf 1829 && !h->forced_local)
0451c93c 1830 {
c152c796 1831 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1832 return FALSE;
0451c93c
MS		 1833 }
1834
f41345a7 1835 s = htab->elf.sgot;
eea6121a
AM		 1836 h->got.offset = s->size;
1837 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1838 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1839 if (tls_type == GOT_TLS_GD)
eea6121a 1840 s->size += GOT_ENTRY_SIZE;
0451c93c 1841 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1842 /* R_390_TLS_IE64 needs one dynamic relocation,
1843 R_390_TLS_GD64 needs one if local symbol and two if global. */
1844 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1845 || tls_type >= GOT_TLS_IE)
f41345a7 1846 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1847 else if (tls_type == GOT_TLS_GD)
f41345a7 1848 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1849 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1850 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1851 && (bfd_link_pic (info)
82058a73 1852 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1853 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1854 }
1855 else
1856 h->got.offset = (bfd_vma) -1;
1857
0451c93c 1858 if (eh->dyn_relocs == NULL)
b34976b6 1859 return TRUE;
0451c93c
MS		 1860
1861 /* In the shared -Bsymbolic case, discard space allocated for
1862 dynamic pc-relative relocs against symbols which turn out to be
1863 defined in regular objects. For the normal shared case, discard
1864 space for pc-relative relocs that have become local due to symbol
1865 visibility changes. */
1866
0e1862bb 1867 if (bfd_link_pic (info))
0451c93c 1868 {
8c21ca21 1869 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1870 {
00d8c7a9 1871 struct elf_dyn_relocs **pp;
0451c93c
MS		 1872
1873 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1874 {
1875 p->count -= p->pc_count;
1876 p->pc_count = 0;
1877 if (p->count == 0)
1878 *pp = p->next;
1879 else
1880 pp = &p->next;
1881 }
1882 }
82058a73
MS		 1883
1884 /* Also discard relocs on undefined weak syms with non-default
1885 visibility. */
22d606e9 1886 if (eh->dyn_relocs != NULL
82058a73 1887 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1888 {
1889 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1890 eh->dyn_relocs = NULL;
1891
1892 /* Make sure undefined weak symbols are output as a dynamic
1893 symbol in PIEs. */
1894 else if (h->dynindx == -1
1895 && !h->forced_local)
1896 {
1897 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1898 return FALSE;
1899 }
1900 }
0451c93c 1901 }
64285810 1902 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1903 {
1904 /* For the non-shared case, discard space for relocs against
1905 symbols which turn out to need copy relocs or are not
1906 dynamic. */
1907
f5385ebf
AM		 1908 if (!h->non_got_ref
1909 && ((h->def_dynamic
1910 && !h->def_regular)
0451c93c
MS		 1911 || (htab->elf.dynamic_sections_created
1912 && (h->root.type == bfd_link_hash_undefweak
1913 || h->root.type == bfd_link_hash_undefined))))
1914 {
1915 /* Make sure this symbol is output as a dynamic symbol.
1916 Undefined weak syms won't yet be marked as dynamic. */
1917 if (h->dynindx == -1
f5385ebf 1918 && !h->forced_local)
0451c93c 1919 {
c152c796 1920 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1921 return FALSE;
0451c93c
MS		 1922 }
1923
1924 /* If that succeeded, we know we'll be keeping all the
1925 relocs. */
1926 if (h->dynindx != -1)
1927 goto keep;
1928 }
1929
1930 eh->dyn_relocs = NULL;
1931
ec338859 1932 keep: ;
0451c93c
MS		 1933 }
1934
1935 /* Finally, allocate space. */
1936 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1937 {
1938 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1939 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1940 }
1941
b34976b6 1942 return TRUE;
0451c93c
MS		 1943}
1944
1945/* Find any dynamic relocs that apply to read-only sections. */
1946
b34976b6 1947static bfd_boolean
2c3fc389 1948readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1949{
1950 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1951 struct elf_dyn_relocs *p;
0451c93c
MS		 1952
1953 eh = (struct elf_s390_link_hash_entry *) h;
1954 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1955 {
1956 asection *s = p->sec->output_section;
1957
1958 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1959 {
1960 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1961
1962 info->flags |= DF_TEXTREL;
1963
1964 /* Not an error, just cut short the traversal. */
b34976b6 1965 return FALSE;
0451c93c
MS		 1966 }
1967 }
b34976b6 1968 return TRUE;
0451c93c
MS		 1969}
1970
a85d7ed0
NC		 1971/* Set the sizes of the dynamic sections. */
1972
b34976b6 1973static bfd_boolean
4dfe6ac6
NC		 1974elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1975 struct bfd_link_info *info)
a85d7ed0 1976{
0451c93c 1977 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1978 bfd *dynobj;
1979 asection *s;
b34976b6 1980 bfd_boolean relocs;
0451c93c 1981 bfd *ibfd;
a85d7ed0 1982
0451c93c 1983 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1984 if (htab == NULL)
1985 return FALSE;
1986
0451c93c
MS		 1987 dynobj = htab->elf.dynobj;
1988 if (dynobj == NULL)
1989 abort ();
a85d7ed0 1990
0451c93c 1991 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1992 {
1993 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1994 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1995 {
3d4d4302 1996 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1997 if (s == NULL)
1998 abort ();
eea6121a 1999 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2000 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2001 }
2002 }
a85d7ed0 2003
0451c93c
MS		 2004 /* Set up .got offsets for local syms, and space for local dynamic
2005 relocs. */
c72f2fb2 2006 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2007 {
0451c93c
MS		 2008 bfd_signed_vma *local_got;
2009 bfd_signed_vma *end_local_got;
69fc87f1 2010 char *local_tls_type;
0451c93c
MS		 2011 bfd_size_type locsymcount;
2012 Elf_Internal_Shdr *symtab_hdr;
2013 asection *srela;
470b557a
AK		 2014 struct plt_entry *local_plt;
2015 unsigned int i;
a85d7ed0 2016
0ffa91dd 2017 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2018 continue;
2019
0451c93c 2020 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2021 {
00d8c7a9 2022 struct elf_dyn_relocs *p;
0451c93c 2023
6edfbbad 2024 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2025 {
ec338859
AM		 2026 if (!bfd_is_abs_section (p->sec)
2027 && bfd_is_abs_section (p->sec->output_section))
2028 {
2029 /* Input section has been discarded, either because
2030 it is a copy of a linkonce section or due to
2031 linker script /DISCARD/, so we'll be discarding
2032 the relocs too. */
2033 }
248866a8 2034 else if (p->count != 0)
ec338859
AM		 2035 {
2036 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2037 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 2038 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2039 info->flags |= DF_TEXTREL;
ec338859 2040 }
a85d7ed0
NC		 2041 }
2042 }
0451c93c
MS		 2043
2044 local_got = elf_local_got_refcounts (ibfd);
2045 if (!local_got)
2046 continue;
2047
0ffa91dd 2048 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2049 locsymcount = symtab_hdr->sh_info;
2050 end_local_got = local_got + locsymcount;
69fc87f1 2051 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2052 s = htab->elf.sgot;
2053 srela = htab->elf.srelgot;
69fc87f1 2054 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2055 {
0451c93c 2056 if (*local_got > 0)
a85d7ed0 2057 {
eea6121a
AM		 2058 *local_got = s->size;
2059 s->size += GOT_ENTRY_SIZE;
69fc87f1 2060 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2061 s->size += GOT_ENTRY_SIZE;
0e1862bb 2062 if (bfd_link_pic (info))
eea6121a 2063 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2064 }
2065 else
0451c93c 2066 *local_got = (bfd_vma) -1;
a85d7ed0 2067 }
470b557a
AK		 2068
2069 local_plt = elf_s390_local_plt (ibfd);
2070 for (i = 0; i < symtab_hdr->sh_info; i++)
2071 {
2072 if (local_plt[i].plt.refcount > 0)
2073 {
2074 local_plt[i].plt.offset = htab->elf.iplt->size;
2075 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2076 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2077 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2078 }
2079 else
2080 local_plt[i].plt.offset = (bfd_vma) -1;
2081 }
0451c93c
MS		 2082 }
2083
69fc87f1
MS		 2084 if (htab->tls_ldm_got.refcount > 0)
2085 {
2086 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2087 relocs. */
f41345a7
AK		 2088 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2089 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2090 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2091 }
2092 else
2093 htab->tls_ldm_got.offset = -1;
2094
0451c93c
MS		 2095 /* Allocate global sym .plt and .got entries, and space for global
2096 sym dynamic relocs. */
2c3fc389 2097 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2098
2099 /* We now have determined the sizes of the various dynamic sections.
2100 Allocate memory for them. */
b34976b6 2101 relocs = FALSE;
0451c93c
MS		 2102 for (s = dynobj->sections; s != NULL; s = s->next)
2103 {
2104 if ((s->flags & SEC_LINKER_CREATED) == 0)
2105 continue;
2106
f41345a7
AK		 2107 if (s == htab->elf.splt
2108 || s == htab->elf.sgot
2109 || s == htab->elf.sgotplt
9d19e4fd 2110 || s == htab->elf.sdynbss
5474d94f 2111 || s == htab->elf.sdynrelro
470b557a
AK		 2112 || s == htab->elf.iplt
2113 || s == htab->elf.igotplt
2114 || s == htab->irelifunc)
0451c93c
MS		 2115 {
2116 /* Strip this section if we don't need it; see the
2117 comment below. */
2118 }
0112cd26 2119 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2120 {
f41345a7 2121 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2122 relocs = TRUE;
ec338859 2123
0451c93c
MS		 2124 /* We use the reloc_count field as a counter if we need
2125 to copy relocs into the output file. */
2126 s->reloc_count = 0;
2127 }
2128 else
a85d7ed0
NC		 2129 {
2130 /* It's not one of our sections, so don't allocate space. */
2131 continue;
2132 }
2133
eea6121a 2134 if (s->size == 0)
a85d7ed0 2135 {
0451c93c
MS		 2136 /* If we don't need this section, strip it from the
2137 output file. This is to handle .rela.bss and
2138 .rela.plt. We must create it in
2139 create_dynamic_sections, because it must be created
2140 before the linker maps input sections to output
2141 sections. The linker does that before
2142 adjust_dynamic_symbol is called, and it is that
2143 function which decides whether anything needs to go
2144 into these sections. */
2145
8423293d 2146 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2147 continue;
2148 }
2149
c456f082
AM		 2150 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2151 continue;
2152
0451c93c
MS		 2153 /* Allocate memory for the section contents. We use bfd_zalloc
2154 here in case unused entries are not reclaimed before the
2155 section's contents are written out. This should not happen,
2156 but this way if it does, we get a R_390_NONE reloc instead
2157 of garbage. */
eea6121a 2158 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2159 if (s->contents == NULL)
b34976b6 2160 return FALSE;
a85d7ed0
NC		 2161 }
2162
0451c93c 2163 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2164 {
2165 /* Add some entries to the .dynamic section. We fill in the
2166 values later, in elf_s390_finish_dynamic_sections, but we
2167 must add the entries now so that we get the correct size for
2168 the .dynamic section. The DT_DEBUG entry is filled in by the
2169 dynamic linker and used by the debugger. */
dc810e39 2170#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2171 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2172
0e1862bb 2173 if (bfd_link_executable (info))
a85d7ed0 2174 {
dc810e39 2175 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2176 return FALSE;
a85d7ed0
NC		 2177 }
2178
f41345a7 2179 if (htab->elf.splt->size != 0)
a85d7ed0 2180 {
dc810e39
AM		 2181 if (!add_dynamic_entry (DT_PLTGOT, 0)
2182 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2183 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2184 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2185 return FALSE;
a85d7ed0
NC		 2186 }
2187
2188 if (relocs)
947216bf
AM		 2189 {
2190 if (!add_dynamic_entry (DT_RELA, 0)
2191 || !add_dynamic_entry (DT_RELASZ, 0)
2192 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2193 return FALSE;
ec338859 2194
0451c93c
MS		 2195 /* If any dynamic relocs apply to a read-only section,
2196 then we need a DT_TEXTREL entry. */
248866a8
AM		 2197 if ((info->flags & DF_TEXTREL) == 0)
2198 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2199 info);
ec338859 2200
0451c93c
MS		 2201 if ((info->flags & DF_TEXTREL) != 0)
2202 {
2203 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2204 return FALSE;
0451c93c 2205 }
a85d7ed0
NC		 2206 }
2207 }
dc810e39 2208#undef add_dynamic_entry
a85d7ed0 2209
b34976b6 2210 return TRUE;
a85d7ed0
NC		 2211}
2212
69fc87f1
MS		 2213/* Return the base VMA address which should be subtracted from real addresses
2214 when resolving @dtpoff relocation.
2215 This is PT_TLS segment p_vaddr. */
2216
2217static bfd_vma
2c3fc389 2218dtpoff_base (struct bfd_link_info *info)
69fc87f1 2219{
e1918d23
AM		 2220 /* If tls_sec is NULL, we should have signalled an error already. */
2221 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2222 return 0;
e1918d23 2223 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2224}
2225
2226/* Return the relocation value for @tpoff relocation
2227 if STT_TLS virtual address is ADDRESS. */
2228
2229static bfd_vma
2c3fc389 2230tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2231{
e1918d23 2232 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2233
e1918d23
AM		 2234 /* If tls_sec is NULL, we should have signalled an error already. */
2235 if (htab->tls_sec == NULL)
69fc87f1 2236 return 0;
e1918d23 2237 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2238}
2239
2240/* Complain if TLS instruction relocation is against an invalid
2241 instruction. */
2242
2243static void
2c3fc389
NC		 2244invalid_tls_insn (bfd *input_bfd,
2245 asection *input_section,
2246 Elf_Internal_Rela *rel)
69fc87f1
MS		 2247{
2248 reloc_howto_type *howto;
2249
2250 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2251 _bfd_error_handler
695344c0 2252 /* xgettext:c-format */
d003868e
AM		 2253 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2254 input_bfd,
2255 input_section,
69fc87f1
MS		 2256 (long) rel->r_offset,
2257 howto->name);
77df2968 2258 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2259}
2260
a85d7ed0
NC		 2261/* Relocate a 390 ELF section. */
2262
b34976b6 2263static bfd_boolean
4dfe6ac6
NC		 2264elf_s390_relocate_section (bfd *output_bfd,
2265 struct bfd_link_info *info,
2266 bfd *input_bfd,
2267 asection *input_section,
2268 bfd_byte *contents,
2269 Elf_Internal_Rela *relocs,
2270 Elf_Internal_Sym *local_syms,
2271 asection **local_sections)
a85d7ed0 2272{
0451c93c 2273 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2274 Elf_Internal_Shdr *symtab_hdr;
2275 struct elf_link_hash_entry **sym_hashes;
2276 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2277 Elf_Internal_Rela *rel;
2278 Elf_Internal_Rela *relend;
2279
0ffa91dd
NC		 2280 BFD_ASSERT (is_s390_elf (input_bfd));
2281
0451c93c 2282 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2283 if (htab == NULL)
2284 return FALSE;
2285
0ffa91dd 2286 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2287 sym_hashes = elf_sym_hashes (input_bfd);
2288 local_got_offsets = elf_local_got_offsets (input_bfd);
2289
a85d7ed0
NC		 2290 rel = relocs;
2291 relend = relocs + input_section->reloc_count;
2292 for (; rel < relend; rel++)
2293 {
5236c819 2294 unsigned int r_type;
a85d7ed0
NC		 2295 reloc_howto_type *howto;
2296 unsigned long r_symndx;
2297 struct elf_link_hash_entry *h;
2298 Elf_Internal_Sym *sym;
2299 asection *sec;
0451c93c 2300 bfd_vma off;
a85d7ed0 2301 bfd_vma relocation;
b34976b6 2302 bfd_boolean unresolved_reloc;
a85d7ed0 2303 bfd_reloc_status_type r;
69fc87f1 2304 int tls_type;
470b557a 2305 asection *base_got = htab->elf.sgot;
a85d7ed0
NC		 2306
2307 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2308 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2309 || r_type == (int) R_390_GNU_VTENTRY)
2310 continue;
5236c819 2311 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2312 {
2313 bfd_set_error (bfd_error_bad_value);
b34976b6 2314 return FALSE;
a85d7ed0 2315 }
a85d7ed0 2316
b491616a 2317 howto = elf_howto_table + r_type;
a85d7ed0 2318 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2319
a85d7ed0
NC		 2320 h = NULL;
2321 sym = NULL;
2322 sec = NULL;
b34976b6 2323 unresolved_reloc = FALSE;
a85d7ed0
NC		 2324 if (r_symndx < symtab_hdr->sh_info)
2325 {
2326 sym = local_syms + r_symndx;
2327 sec = local_sections[r_symndx];
470b557a
AK		 2328
2329 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2330 {
2331 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2332 if (local_plt == NULL)
2333 return FALSE;
2334
2335 /* Address of the PLT slot. */
2336 relocation = (htab->elf.iplt->output_section->vma
2337 + htab->elf.iplt->output_offset
2338 + local_plt[r_symndx].plt.offset);
2339
2340 switch (r_type)
2341 {
31db78f6
AK		 2342 case R_390_PLTOFF16:
2343 case R_390_PLTOFF32:
2344 case R_390_PLTOFF64:
2345 relocation -= htab->elf.sgot->output_section->vma;
2346 break;
470b557a
AK		 2347 case R_390_GOTPLT12:
2348 case R_390_GOTPLT16:
2349 case R_390_GOTPLT20:
2350 case R_390_GOTPLT32:
2351 case R_390_GOTPLT64:
2352 case R_390_GOTPLTENT:
2353 case R_390_GOT12:
2354 case R_390_GOT16:
2355 case R_390_GOT20:
2356 case R_390_GOT32:
2357 case R_390_GOT64:
2358 case R_390_GOTENT:
2359 {
2360 /* Write the PLT slot address into the GOT slot. */
2361 bfd_put_64 (output_bfd, relocation,
2362 htab->elf.sgot->contents +
2363 local_got_offsets[r_symndx]);
2364 relocation = (local_got_offsets[r_symndx] +
2365 htab->elf.sgot->output_offset);
2366
2367 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2368 relocation += htab->elf.sgot->output_section->vma;
2369 break;
2370 }
2371 default:
2372 break;
2373 }
2374 /* The output section is needed later in
2375 finish_dynamic_section when creating the dynamic
2376 relocation. */
2377 local_plt[r_symndx].sec = sec;
2378 goto do_relocation;
2379 }
2380 else
2381 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2382 }
2383 else
2384 {
560e09e9 2385 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2386 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2387
b2a8e766
AM		 2388 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2389 r_symndx, symtab_hdr, sym_hashes,
2390 h, sec, relocation,
62d887d4 2391 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2392 }
2393
dbaa2011 2394 if (sec != NULL && discarded_section (sec))
e4067dbb 2395 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2396 rel, 1, relend, howto, 0, contents);
ab96bf03 2397
0e1862bb 2398 if (bfd_link_relocatable (info))
ab96bf03
AM		 2399 continue;
2400
a85d7ed0
NC		 2401 switch (r_type)
2402 {
5236c819
MS		 2403 case R_390_GOTPLT12:
2404 case R_390_GOTPLT16:
bd1ea41b 2405 case R_390_GOTPLT20:
5236c819
MS		 2406 case R_390_GOTPLT32:
2407 case R_390_GOTPLT64:
2408 case R_390_GOTPLTENT:
2409 /* There are three cases for a GOTPLT relocation. 1) The
2410 relocation is against the jump slot entry of a plt that
2411 will get emitted to the output file. 2) The relocation
2412 is against the jump slot of a plt entry that has been
2413 removed. elf_s390_adjust_gotplt has created a GOT entry
2414 as replacement. 3) The relocation is against a local symbol.
2415 Cases 2) and 3) are the same as the GOT relocation code
2416 so we just have to test for case 1 and fall through for
2417 the other two. */
2418 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2419 {
2420 bfd_vma plt_index;
2421
470b557a
AK		 2422 if (s390_is_ifunc_symbol_p (h))
2423 {
2424 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2425 relocation = (plt_index * GOT_ENTRY_SIZE +
2426 htab->elf.igotplt->output_offset);
2427 if (r_type == R_390_GOTPLTENT)
2428 relocation += htab->elf.igotplt->output_section->vma;
2429 }
2430 else
2431 {
2432 /* Calc. index no.
2433 Current offset - size first entry / entry size. */
2434 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2435 PLT_ENTRY_SIZE;
2436
2437 /* Offset in GOT is PLT index plus GOT headers(3)
3b67f094 2438 times 8, addr & GOT addr. */
470b557a
AK		 2439 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2440 if (r_type == R_390_GOTPLTENT)
2441 relocation += htab->elf.sgot->output_section->vma;
2442 }
5236c819 2443 unresolved_reloc = FALSE;
5236c819
MS		 2444 break;
2445 }
2446 /* Fall through. */
2447
947216bf
AM		 2448 case R_390_GOT12:
2449 case R_390_GOT16:
bd1ea41b 2450 case R_390_GOT20:
947216bf
AM		 2451 case R_390_GOT32:
2452 case R_390_GOT64:
2453 case R_390_GOTENT:
2454 /* Relocation is to the entry for this symbol in the global
2455 offset table. */
470b557a 2456 if (base_got == NULL)
0451c93c 2457 abort ();
a85d7ed0 2458
947216bf
AM		 2459 if (h != NULL)
2460 {
b34976b6 2461 bfd_boolean dyn;
a85d7ed0 2462
947216bf 2463 off = h->got.offset;
0451c93c 2464 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2465
2466 if (s390_is_ifunc_symbol_p (h))
2467 {
2468 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2469 if (off == (bfd_vma)-1)
2470 {
2471 /* No explicit GOT usage so redirect to the
2472 got.iplt slot. */
2473 base_got = htab->elf.igotplt;
2474 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2475 }
2476 else
2477 {
2478 /* Explicit GOT slots must contain the address
2479 of the PLT slot. This will be handled in
2480 finish_dynamic_symbol. */
2481 }
2482 }
0e1862bb
L		 2483 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2484 bfd_link_pic (info),
2485 h)
2486 || (bfd_link_pic (info)
470b557a
AK		 2487 && SYMBOL_REFERENCES_LOCAL (info, h))
2488 || (ELF_ST_VISIBILITY (h->other)
2489 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2490 {
2491 /* This is actually a static link, or it is a
2492 -Bsymbolic link and the symbol is defined
2493 locally, or the symbol was forced to be local
2494 because of a version file. We must initialize
2495 this entry in the global offset table. Since the
2496 offset must always be a multiple of 2, we use the
2497 least significant bit to record whether we have
2498 initialized it already.
2499
2500 When doing a dynamic link, we create a .rel.got
2501 relocation entry to initialize the value. This
2502 is done in the finish_dynamic_symbol routine. */
2503 if ((off & 1) != 0)
2504 off &= ~1;
2505 else
2506 {
a85d7ed0 2507 bfd_put_64 (output_bfd, relocation,
470b557a 2508 base_got->contents + off);
947216bf
AM		 2509 h->got.offset |= 1;
2510 }
a63cc5f7
AK		 2511
2512 if ((h->def_regular
0e1862bb 2513 && bfd_link_pic (info)
a63cc5f7
AK		 2514 && SYMBOL_REFERENCES_LOCAL (info, h))
2515 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2516 && ((r_type == R_390_GOTENT
2517 && (bfd_get_16 (input_bfd,
2518 contents + rel->r_offset - 2)
2519 & 0xff0f) == 0xc408)
2520 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2521 || (r_type == R_390_GOT20
2522 && (bfd_get_32 (input_bfd,
2523 contents + rel->r_offset - 2)
2524 & 0xff00f000) == 0xe300c000
2525 && bfd_get_8 (input_bfd,
2526 contents + rel->r_offset + 3) == 0x04)))
2527
2528 {
2529 unsigned short new_insn =
2530 (0xc000 | (bfd_get_8 (input_bfd,
2531 contents + rel->r_offset - 1) & 0xf0));
2532 bfd_put_16 (output_bfd, new_insn,
2533 contents + rel->r_offset - 2);
2534 r_type = R_390_PC32DBL;
2535 rel->r_addend = 2;
2536 howto = elf_howto_table + r_type;
2537 relocation = h->root.u.def.value
2538 + h->root.u.def.section->output_section->vma
2539 + h->root.u.def.section->output_offset;
2540 goto do_relocation;
2541 }
947216bf 2542 }
0451c93c 2543 else
b34976b6 2544 unresolved_reloc = FALSE;
947216bf
AM		 2545 }
2546 else
2547 {
0451c93c
MS		 2548 if (local_got_offsets == NULL)
2549 abort ();
a85d7ed0 2550
947216bf 2551 off = local_got_offsets[r_symndx];
a85d7ed0 2552
947216bf
AM		 2553 /* The offset must always be a multiple of 8. We use
2554 the least significant bit to record whether we have
2555 already generated the necessary reloc. */
2556 if ((off & 1) != 0)
2557 off &= ~1;
2558 else
2559 {
2560 bfd_put_64 (output_bfd, relocation,
f41345a7 2561 htab->elf.sgot->contents + off);
a85d7ed0 2562
0e1862bb 2563 if (bfd_link_pic (info))
947216bf
AM		 2564 {
2565 asection *s;
2566 Elf_Internal_Rela outrel;
2567 bfd_byte *loc;
a85d7ed0 2568
f41345a7 2569 s = htab->elf.srelgot;
947216bf 2570 if (s == NULL)
0451c93c 2571 abort ();
a85d7ed0 2572
f41345a7
AK		 2573 outrel.r_offset = (htab->elf.sgot->output_section->vma
2574 + htab->elf.sgot->output_offset
947216bf
AM		 2575 + off);
2576 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2577 outrel.r_addend = relocation;
947216bf
AM		 2578 loc = s->contents;
2579 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2580 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2581 }
a85d7ed0 2582
947216bf
AM		 2583 local_got_offsets[r_symndx] |= 1;
2584 }
2585 }
a85d7ed0 2586
0451c93c
MS		 2587 if (off >= (bfd_vma) -2)
2588 abort ();
2589
470b557a 2590 relocation = base_got->output_offset + off;
0451c93c 2591
ae9a127f
NC		 2592 /* For @GOTENT the relocation is against the offset between
2593 the instruction and the symbols entry in the GOT and not
2594 between the start of the GOT and the symbols entry. We
2595 add the vma of the GOT to get the correct value. */
5236c819
MS		 2596 if ( r_type == R_390_GOTENT
2597 || r_type == R_390_GOTPLTENT)
470b557a 2598 relocation += base_got->output_section->vma;
a85d7ed0 2599
947216bf 2600 break;
99c79b2e 2601
5236c819
MS		 2602 case R_390_GOTOFF16:
2603 case R_390_GOTOFF32:
2604 case R_390_GOTOFF64:
947216bf
AM		 2605 /* Relocation is relative to the start of the global offset
2606 table. */
a85d7ed0 2607
d47b13e0
AK		 2608 if (h != NULL
2609 && s390_is_ifunc_symbol_p (h)
2610 && h->def_regular
2611 && !bfd_link_executable (info))
2612 {
2613 relocation = (htab->elf.iplt->output_section->vma
2614 + htab->elf.iplt->output_offset
2615 + h->plt.offset
2616 - htab->elf.sgot->output_section->vma);
2617 goto do_relocation;
2618 }
2619
947216bf
AM		 2620 /* Note that sgot->output_offset is not involved in this
2621 calculation. We always want the start of .got. If we
2622 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2623 permitted by the ABI, we might have to change this
2624 calculation. */
f41345a7 2625 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2626 break;
a85d7ed0 2627
947216bf 2628 case R_390_GOTPC:
a85d7ed0 2629 case R_390_GOTPCDBL:
947216bf 2630 /* Use global offset table as symbol value. */
f41345a7 2631 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2632 unresolved_reloc = FALSE;
947216bf 2633 break;
a85d7ed0 2634
fb798c50 2635 case R_390_PLT12DBL:
947216bf 2636 case R_390_PLT16DBL:
fb798c50 2637 case R_390_PLT24DBL:
947216bf
AM		 2638 case R_390_PLT32:
2639 case R_390_PLT32DBL:
2640 case R_390_PLT64:
2641 /* Relocation is to the entry for this symbol in the
2642 procedure linkage table. */
a85d7ed0 2643
947216bf
AM		 2644 /* Resolve a PLT32 reloc against a local symbol directly,
2645 without using the procedure linkage table. */
2646 if (h == NULL)
2647 break;
a85d7ed0 2648
947216bf 2649 if (h->plt.offset == (bfd_vma) -1
31db78f6 2650 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2651 {
2652 /* We didn't make a PLT entry for this symbol. This
2653 happens when statically linking PIC code, or when
2654 using -Bsymbolic. */
2655 break;
2656 }
470b557a
AK		 2657 if (s390_is_ifunc_symbol_p (h))
2658 relocation = (htab->elf.iplt->output_section->vma
2659 + htab->elf.iplt->output_offset
2660 + h->plt.offset);
2661 else
2662 relocation = (htab->elf.splt->output_section->vma
2663 + htab->elf.splt->output_offset
2664 + h->plt.offset);
b34976b6 2665 unresolved_reloc = FALSE;
26e41594 2666 break;
5236c819
MS		 2667
2668 case R_390_PLTOFF16:
2669 case R_390_PLTOFF32:
2670 case R_390_PLTOFF64:
26e41594
AM		 2671 /* Relocation is to the entry for this symbol in the
2672 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2673
2674 /* For local symbols or if we didn't make a PLT entry for
2675 this symbol resolve the symbol directly. */
31db78f6 2676 if (h == NULL
5236c819 2677 || h->plt.offset == (bfd_vma) -1
31db78f6 2678 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2679 {
f41345a7 2680 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2681 break;
2682 }
2683
470b557a
AK		 2684 if (s390_is_ifunc_symbol_p (h))
2685 relocation = (htab->elf.iplt->output_section->vma
2686 + htab->elf.iplt->output_offset
2687 + h->plt.offset
2688 - htab->elf.sgot->output_section->vma);
2689 else
2690 relocation = (htab->elf.splt->output_section->vma
2691 + htab->elf.splt->output_offset
2692 + h->plt.offset
2693 - htab->elf.sgot->output_section->vma);
5236c819 2694 unresolved_reloc = FALSE;
947216bf
AM		 2695 break;
2696
947216bf 2697 case R_390_PC16:
fb798c50 2698 case R_390_PC12DBL:
947216bf 2699 case R_390_PC16DBL:
fb798c50 2700 case R_390_PC24DBL:
947216bf 2701 case R_390_PC32:
a85d7ed0 2702 case R_390_PC32DBL:
947216bf 2703 case R_390_PC64:
99ba5125
AK		 2704 /* The target of these relocs are instruction operands
2705 residing in read-only sections. We cannot emit a runtime
2706 reloc for it. */
2707 if (h != NULL
2708 && s390_is_ifunc_symbol_p (h)
2709 && h->def_regular
2710 && bfd_link_pic (info))
2711 {
2712 relocation = (htab->elf.iplt->output_section->vma
2713 + htab->elf.iplt->output_offset
2714 + h->plt.offset);
2715 goto do_relocation;
2716 }
1a0670f3 2717 /* Fall through. */
99ba5125
AK		 2718
2719 case R_390_8:
2720 case R_390_16:
2721 case R_390_32:
2722 case R_390_64:
470b557a
AK		 2723
2724 if (h != NULL
2725 && s390_is_ifunc_symbol_p (h)
2726 && h->def_regular)
2727 {
0e1862bb 2728 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK		 2729 {
2730 /* For a non-shared object STT_GNU_IFUNC symbol must
2731 go through PLT. */
2732 relocation = (htab->elf.iplt->output_section->vma
2733 + htab->elf.iplt->output_offset
2734 + h ->plt.offset);
2735 goto do_relocation;
2736 }
2737 else
2738 {
2739 /* For shared objects a runtime relocation is needed. */
2740
2741 Elf_Internal_Rela outrel;
2742 asection *sreloc;
2743
2744 /* Need a dynamic relocation to get the real function
2745 address. */
2746 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2747 info,
2748 input_section,
2749 rel->r_offset);
2750 if (outrel.r_offset == (bfd_vma) -1
2751 || outrel.r_offset == (bfd_vma) -2)
2752 abort ();
2753
2754 outrel.r_offset += (input_section->output_section->vma
2755 + input_section->output_offset);
2756
2757 if (h->dynindx == -1
2758 || h->forced_local
0e1862bb 2759 || bfd_link_executable (info))
470b557a
AK		 2760 {
2761 /* This symbol is resolved locally. */
2762 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2763 outrel.r_addend = (h->root.u.def.value
2764 + h->root.u.def.section->output_section->vma
2765 + h->root.u.def.section->output_offset);
2766 }
2767 else
2768 {
2769 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2770 outrel.r_addend = 0;
2771 }
2772
2773 sreloc = htab->elf.irelifunc;
2774 elf_append_rela (output_bfd, sreloc, &outrel);
2775
2776 /* If this reloc is against an external symbol, we
2777 do not want to fiddle with the addend. Otherwise,
2778 we need to include the symbol value so that it
2779 becomes an addend for the dynamic reloc. For an
2780 internal symbol, we have updated addend. */
2781 continue;
2782 }
2783 }
2784
b1e24c02 2785 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2786 break;
2787
0e1862bb 2788 if ((bfd_link_pic (info)
82058a73
MS		 2789 && (h == NULL
2790 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2791 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2792 && ((r_type != R_390_PC16
fb798c50 2793 && r_type != R_390_PC12DBL
0451c93c 2794 && r_type != R_390_PC16DBL
fb798c50 2795 && r_type != R_390_PC24DBL
0451c93c
MS		 2796 && r_type != R_390_PC32
2797 && r_type != R_390_PC32DBL
2798 && r_type != R_390_PC64)
8c21ca21 2799 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2800 || (ELIMINATE_COPY_RELOCS
0e1862bb 2801 && !bfd_link_pic (info)
0451c93c
MS		 2802 && h != NULL
2803 && h->dynindx != -1
f5385ebf
AM		 2804 && !h->non_got_ref
2805 && ((h->def_dynamic
2806 && !h->def_regular)
0451c93c
MS		 2807 || h->root.type == bfd_link_hash_undefweak
2808 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2809 {
2810 Elf_Internal_Rela outrel;
b34976b6 2811 bfd_boolean skip, relocate;
0451c93c 2812 asection *sreloc;
947216bf 2813 bfd_byte *loc;
a85d7ed0 2814
947216bf
AM		 2815 /* When generating a shared object, these relocations
2816 are copied into the output file to be resolved at run
2817 time. */
b34976b6
AM		 2818 skip = FALSE;
2819 relocate = FALSE;
a85d7ed0 2820
c629eae0
JJ		 2821 outrel.r_offset =
2822 _bfd_elf_section_offset (output_bfd, info, input_section,
2823 rel->r_offset);
2824 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2825 skip = TRUE;
0bb2d96a 2826 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2827 skip = TRUE, relocate = TRUE;
a85d7ed0 2828
947216bf
AM		 2829 outrel.r_offset += (input_section->output_section->vma
2830 + input_section->output_offset);
a85d7ed0 2831
947216bf 2832 if (skip)
0bb2d96a 2833 memset (&outrel, 0, sizeof outrel);
947216bf 2834 else if (h != NULL
0451c93c
MS		 2835 && h->dynindx != -1
2836 && (r_type == R_390_PC16
fb798c50 2837 || r_type == R_390_PC12DBL
0451c93c 2838 || r_type == R_390_PC16DBL
fb798c50 2839 || r_type == R_390_PC24DBL
0451c93c
MS		 2840 || r_type == R_390_PC32
2841 || r_type == R_390_PC32DBL
2842 || r_type == R_390_PC64
0e1862bb 2843 || !bfd_link_pic (info)
8c21ca21 2844 || !SYMBOLIC_BIND (info, h)
f5385ebf 2845 || !h->def_regular))
947216bf
AM		 2846 {
2847 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2848 outrel.r_addend = rel->r_addend;
947216bf
AM		 2849 }
2850 else
2851 {
0451c93c 2852 /* This symbol is local, or marked to become local. */
90ced0dd 2853 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2854 if (r_type == R_390_64)
2855 {
2856 relocate = TRUE;
2857 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2858 }
2859 else
2860 {
2861 long sindx;
2862
90ced0dd 2863 if (bfd_is_abs_section (sec))
b5727d75
MS		 2864 sindx = 0;
2865 else if (sec == NULL || sec->owner == NULL)
2866 {
2867 bfd_set_error(bfd_error_bad_value);
2868 return FALSE;
2869 }
2870 else
2871 {
2872 asection *osec;
2873
2874 osec = sec->output_section;
2875 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2876
2877 if (sindx == 0)
2878 {
2879 osec = htab->elf.text_index_section;
2880 sindx = elf_section_data (osec)->dynindx;
2881 }
2882 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2883
2884 /* We are turning this relocation into one
2885 against a section symbol, so subtract out
2886 the output section's address but not the
2887 offset of the input section in the output
2888 section. */
90ced0dd 2889 outrel.r_addend -= osec->vma;
b5727d75
MS		 2890 }
2891 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2892 }
0451c93c 2893 }
a85d7ed0 2894
0451c93c
MS		 2895 sreloc = elf_section_data (input_section)->sreloc;
2896 if (sreloc == NULL)
2897 abort ();
2898
947216bf
AM		 2899 loc = sreloc->contents;
2900 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2901 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2902
947216bf
AM		 2903 /* If this reloc is against an external symbol, we do
2904 not want to fiddle with the addend. Otherwise, we
2905 need to include the symbol value so that it becomes
2906 an addend for the dynamic reloc. */
2907 if (! relocate)
2908 continue;
2909 }
a85d7ed0 2910
947216bf 2911 break;
a85d7ed0 2912
69fc87f1
MS		 2913 /* Relocations for tls literal pool entries. */
2914 case R_390_TLS_IE64:
0e1862bb 2915 if (bfd_link_pic (info))
69fc87f1
MS		 2916 {
2917 Elf_Internal_Rela outrel;
2918 asection *sreloc;
2919 bfd_byte *loc;
2920
2921 outrel.r_offset = rel->r_offset
2922 + input_section->output_section->vma
2923 + input_section->output_offset;
2924 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2925 sreloc = elf_section_data (input_section)->sreloc;
2926 if (sreloc == NULL)
2927 abort ();
2928 loc = sreloc->contents;
2929 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2930 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2931 }
ae9a127f 2932 /* Fall through. */
69fc87f1
MS		 2933
2934 case R_390_TLS_GD64:
2935 case R_390_TLS_GOTIE64:
2936 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2937 tls_type = GOT_UNKNOWN;
2938 if (h == NULL && local_got_offsets)
2939 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2940 else if (h != NULL)
2941 {
2942 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2943 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2944 r_type = R_390_TLS_LE64;
2945 }
2946 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2947 r_type = R_390_TLS_IE64;
2948
2949 if (r_type == R_390_TLS_LE64)
2950 {
2951 /* This relocation gets optimized away by the local exec
2952 access optimization. */
2953 BFD_ASSERT (! unresolved_reloc);
2954 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2955 contents + rel->r_offset);
2956 continue;
2957 }
2958
f41345a7 2959 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2960 abort ();
2961
2962 if (h != NULL)
2963 off = h->got.offset;
2964 else
2965 {
2966 if (local_got_offsets == NULL)
2967 abort ();
2968
2969 off = local_got_offsets[r_symndx];
2970 }
2971
2972 emit_tls_relocs:
2973
2974 if ((off & 1) != 0)
2975 off &= ~1;
26e41594 2976 else
69fc87f1
MS		 2977 {
2978 Elf_Internal_Rela outrel;
2979 bfd_byte *loc;
2980 int dr_type, indx;
2981
f41345a7 2982 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2983 abort ();
2984
f41345a7
AK		 2985 outrel.r_offset = (htab->elf.sgot->output_section->vma
2986 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2987
2988 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2989 if (r_type == R_390_TLS_GD64)
2990 dr_type = R_390_TLS_DTPMOD;
2991 else
2992 dr_type = R_390_TLS_TPOFF;
2993 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2994 outrel.r_addend = relocation - dtpoff_base (info);
2995 else
2996 outrel.r_addend = 0;
2997 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2998 loc = htab->elf.srelgot->contents;
2999 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3000 * sizeof (Elf64_External_Rela);
3001 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3002
3003 if (r_type == R_390_TLS_GD64)
3004 {
3005 if (indx == 0)
3006 {
3007 BFD_ASSERT (! unresolved_reloc);
3008 bfd_put_64 (output_bfd,
3009 relocation - dtpoff_base (info),
f41345a7 3010 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3011 }
3012 else
3013 {
3014 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
3015 outrel.r_offset += GOT_ENTRY_SIZE;
3016 outrel.r_addend = 0;
f41345a7 3017 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3018 loc += sizeof (Elf64_External_Rela);
3019 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3020 }
3021 }
3022
3023 if (h != NULL)
3024 h->got.offset |= 1;
3025 else
3026 local_got_offsets[r_symndx] |= 1;
3027 }
3028
3029 if (off >= (bfd_vma) -2)
3030 abort ();
3031 if (r_type == ELF64_R_TYPE (rel->r_info))
3032 {
f41345a7 3033 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3034 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 3035 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3036 unresolved_reloc = FALSE;
3037 }
3038 else
3039 {
f41345a7 3040 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3041 contents + rel->r_offset);
3042 continue;
3043 }
3044 break;
3045
3046 case R_390_TLS_GOTIE12:
bd1ea41b 3047 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3048 case R_390_TLS_IEENT:
3049 if (h == NULL)
3050 {
3051 if (local_got_offsets == NULL)
3052 abort();
3053 off = local_got_offsets[r_symndx];
0e1862bb 3054 if (bfd_link_pic (info))
69fc87f1
MS		 3055 goto emit_tls_relocs;
3056 }
3057 else
3058 {
3059 off = h->got.offset;
3060 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 3061 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3062 goto emit_tls_relocs;
3063 }
3064
f41345a7 3065 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3066 abort ();
3067
3068 BFD_ASSERT (! unresolved_reloc);
3069 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3070 htab->elf.sgot->contents + off);
3071 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3072 if (r_type == R_390_TLS_IEENT)
f41345a7 3073 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3074 unresolved_reloc = FALSE;
3075 break;
3076
3077 case R_390_TLS_LDM64:
0e1862bb 3078 if (! bfd_link_pic (info))
69fc87f1
MS		 3079 /* The literal pool entry this relocation refers to gets ignored
3080 by the optimized code of the local exec model. Do nothing
3081 and the value will turn out zero. */
3082 continue;
3083
f41345a7 3084 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3085 abort ();
3086
3087 off = htab->tls_ldm_got.offset;
3088 if (off & 1)
3089 off &= ~1;
3090 else
3091 {
3092 Elf_Internal_Rela outrel;
3093 bfd_byte *loc;
3094
f41345a7 3095 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3096 abort ();
3097
f41345a7
AK		 3098 outrel.r_offset = (htab->elf.sgot->output_section->vma
3099 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3100
3101 bfd_put_64 (output_bfd, 0,
f41345a7 3102 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3103 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3104 outrel.r_addend = 0;
f41345a7
AK		 3105 loc = htab->elf.srelgot->contents;
3106 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3107 * sizeof (Elf64_External_Rela);
3108 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3109 htab->tls_ldm_got.offset |= 1;
3110 }
f41345a7 3111 relocation = htab->elf.sgot->output_offset + off;
26e41594 3112 unresolved_reloc = FALSE;
69fc87f1
MS		 3113 break;
3114
3115 case R_390_TLS_LE64:
3cbc1e5e 3116 if (bfd_link_dll (info))
69fc87f1
MS		 3117 {
3118 /* Linking a shared library with non-fpic code requires
3119 a R_390_TLS_TPOFF relocation. */
3120 Elf_Internal_Rela outrel;
3121 asection *sreloc;
3122 bfd_byte *loc;
3123 int indx;
3124
3125 outrel.r_offset = rel->r_offset
3126 + input_section->output_section->vma
3127 + input_section->output_offset;
3128 if (h != NULL && h->dynindx != -1)
3129 indx = h->dynindx;
3130 else
3131 indx = 0;
3132 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3133 if (indx == 0)
3134 outrel.r_addend = relocation - dtpoff_base (info);
3135 else
3136 outrel.r_addend = 0;
3137 sreloc = elf_section_data (input_section)->sreloc;
3138 if (sreloc == NULL)
3139 abort ();
3140 loc = sreloc->contents;
3141 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3142 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3143 }
3144 else
3145 {
3146 BFD_ASSERT (! unresolved_reloc);
3147 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3148 contents + rel->r_offset);
3149 }
3150 continue;
3151
3152 case R_390_TLS_LDO64:
0e1862bb 3153 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3154 relocation -= dtpoff_base (info);
3155 else
3156 /* When converting LDO to LE, we must negate. */
3157 relocation = -tpoff (info, relocation);
3158 break;
3159
3160 /* Relocations for tls instructions. */
3161 case R_390_TLS_LOAD:
3162 case R_390_TLS_GDCALL:
3163 case R_390_TLS_LDCALL:
3164 tls_type = GOT_UNKNOWN;
3165 if (h == NULL && local_got_offsets)
3166 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3167 else if (h != NULL)
3168 tls_type = elf_s390_hash_entry(h)->tls_type;
3169
3170 if (tls_type == GOT_TLS_GD)
3171 continue;
3172
3173 if (r_type == R_390_TLS_LOAD)
3174 {
0e1862bb 3175 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3176 {
3177 /* IE->LE transition. Four valid cases:
3178 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3179 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3180 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3181 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3182 unsigned int insn0, insn1, ry;
3183
3184 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3185 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3186 if (insn1 != 0x0004)
3187 invalid_tls_insn (input_bfd, input_section, rel);
3188 ry = 0;
3189 if ((insn0 & 0xff00f000) == 0xe3000000)
3190 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3191 ry = (insn0 & 0x000f0000);
3192 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3193 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3194 ry = (insn0 & 0x0000f000) << 4;
3195 else if ((insn0 & 0xff00f000) == 0xe300c000)
3196 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3197 ry = (insn0 & 0x000f0000);
3198 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3199 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3200 ry = (insn0 & 0x0000f000) << 4;
3201 else
3202 invalid_tls_insn (input_bfd, input_section, rel);
3203 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3204 insn1 = 0x000d;
3205 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3206 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3207 }
3208 }
3209 else if (r_type == R_390_TLS_GDCALL)
3210 {
3211 unsigned int insn0, insn1;
3212
3213 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3214 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3215 if ((insn0 & 0xffff0000) != 0xc0e50000)
3216 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3217 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3218 {
3219 /* GD->LE transition.
3220 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3221 insn0 = 0xc0040000;
3222 insn1 = 0x0000;
3223 }
3224 else
3225 {
3226 /* GD->IE transition.
3227 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3228 insn0 = 0xe322c000;
3229 insn1 = 0x0004;
3230 }
3231 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3232 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3233 }
3234 else if (r_type == R_390_TLS_LDCALL)
3235 {
0e1862bb 3236 if (!bfd_link_pic (info))
69fc87f1
MS		 3237 {
3238 unsigned int insn0, insn1;
3239
3240 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3241 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3242 if ((insn0 & 0xffff0000) != 0xc0e50000)
3243 invalid_tls_insn (input_bfd, input_section, rel);
3244 /* LD->LE transition.
3245 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3246 insn0 = 0xc0040000;
3247 insn1 = 0x0000;
3248 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3249 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3250 }
3251 }
3252 continue;
3253
947216bf
AM		 3254 default:
3255 break;
3256 }
a85d7ed0 3257
239e1f3a
AM		 3258 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3259 because such sections are not SEC_ALLOC and thus ld.so will
3260 not process them. */
0451c93c 3261 if (unresolved_reloc
239e1f3a 3262 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3263 && h->def_dynamic)
3264 && _bfd_elf_section_offset (output_bfd, info, input_section,
3265 rel->r_offset) != (bfd_vma) -1)
4eca0228 3266 _bfd_error_handler
695344c0 3267 /* xgettext:c-format */
843fe662 3268 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3269 input_bfd,
3270 input_section,
0451c93c 3271 (long) rel->r_offset,
843fe662 3272 howto->name,
0451c93c
MS		 3273 h->root.root.string);
3274
470b557a
AK		 3275 do_relocation:
3276
fb798c50
AK		 3277 /* When applying a 24 bit reloc we need to start one byte
3278 earlier. Otherwise the 32 bit get/put bfd operations might
3279 access a byte after the actual section. */
3280 if (r_type == R_390_PC24DBL
3281 || r_type == R_390_PLT24DBL)
3282 rel->r_offset--;
3283
bd1ea41b
MS		 3284 if (r_type == R_390_20
3285 || r_type == R_390_GOT20
3286 || r_type == R_390_GOTPLT20
3287 || r_type == R_390_TLS_GOTIE20)
3288 {
3289 relocation += rel->r_addend;
3290 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3291 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3292 contents, rel->r_offset,
3293 relocation, 0);
3294 }
3295 else
3296 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3297 contents, rel->r_offset,
3298 relocation, rel->r_addend);
3299
3300 if (r != bfd_reloc_ok)
3301 {
0451c93c 3302 const char *name;
ec338859 3303
0451c93c
MS		 3304 if (h != NULL)
3305 name = h->root.root.string;
3306 else
a85d7ed0 3307 {
0451c93c
MS		 3308 name = bfd_elf_string_from_elf_section (input_bfd,
3309 symtab_hdr->sh_link,
3310 sym->st_name);
3311 if (name == NULL)
b34976b6 3312 return FALSE;
0451c93c
MS		 3313 if (*name == '\0')
3314 name = bfd_section_name (input_bfd, sec);
3315 }
ec338859 3316
0451c93c 3317 if (r == bfd_reloc_overflow)
1a72702b
AM		 3318 (*info->callbacks->reloc_overflow)
3319 (info, (h ? &h->root : NULL), name, howto->name,
3320 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3321 else
3322 {
4eca0228 3323 _bfd_error_handler
695344c0 3324 /* xgettext:c-format */
d003868e
AM		 3325 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3326 input_bfd, input_section,
0451c93c 3327 (long) rel->r_offset, name, (int) r);
b34976b6 3328 return FALSE;
a85d7ed0
NC		 3329 }
3330 }
3331 }
3332
b34976b6 3333 return TRUE;
a85d7ed0
NC		 3334}
3335
470b557a
AK		 3336/* Generate the PLT slots together with the dynamic relocations needed
3337 for IFUNC symbols. */
3338
3339static void
3340elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3341 struct bfd_link_info *info,
3342 struct elf_link_hash_entry *h,
3343 struct elf_s390_link_hash_table *htab,
3344 bfd_vma plt_offset,
3345 bfd_vma resolver_address)
3346{
3347 bfd_vma plt_index;
3348 bfd_vma got_offset;
3349 Elf_Internal_Rela rela;
3350 bfd_byte *loc;
3351 asection *plt, *gotplt, *relplt;
3352
3353 if (htab->elf.iplt == NULL
3354 || htab->elf.igotplt == NULL
3355 || htab->elf.irelplt == NULL)
3356 abort ();
3357
3358 /* Index of the PLT slot within iplt section. */
3359 plt_index = plt_offset / PLT_ENTRY_SIZE;
3360 plt = htab->elf.iplt;
3361 /* Offset into the igot.plt section. */
3362 got_offset = plt_index * GOT_ENTRY_SIZE;
3363 gotplt = htab->elf.igotplt;
3364 relplt = htab->elf.irelplt;
3365
3366 /* Fill in the blueprint of a PLT. */
3367 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3368 PLT_ENTRY_SIZE);
3369
3370 /* Fixup the relative address to the GOT entry */
3371 bfd_put_32 (output_bfd,
3372 (gotplt->output_section->vma +
3373 gotplt->output_offset + got_offset
3374 - (plt->output_section->vma +
3375 plt->output_offset +
3376 plt_offset))/2,
3377 plt->contents + plt_offset + 2);
3378 /* Fixup the relative branch to PLT 0 */
3379 bfd_put_32 (output_bfd, - (plt->output_offset +
3380 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3381 plt->contents + plt_offset + 24);
3382 /* Fixup offset into .rela.plt section. */
3383 bfd_put_32 (output_bfd, relplt->output_offset +
3384 plt_index * sizeof (Elf64_External_Rela),
3385 plt->contents + plt_offset + 28);
3386
3387 /* Fill in the entry in the global offset table.
3388 Points to instruction after GOT offset. */
3389 bfd_put_64 (output_bfd,
3390 (plt->output_section->vma
3391 + plt->output_offset
3392 + plt_offset
3393 + 14),
3394 gotplt->contents + got_offset);
3395
3396 /* Fill in the entry in the .rela.plt section. */
3397 rela.r_offset = (gotplt->output_section->vma
3398 + gotplt->output_offset
3399 + got_offset);
3400
3401 if (!h
3402 || h->dynindx == -1
0e1862bb 3403 || ((bfd_link_executable (info)
470b557a
AK		 3404 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3405 && h->def_regular))
3406 {
3407 /* The symbol can be locally resolved. */
3408 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3409 rela.r_addend = resolver_address;
3410 }
3411 else
3412 {
3413 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3414 rela.r_addend = 0;
3415 }
3416
3417 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3418 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3419}
3420
3421
a85d7ed0
NC		 3422/* Finish up dynamic symbol handling. We set the contents of various
3423 dynamic sections here. */
3424
b34976b6 3425static bfd_boolean
4dfe6ac6
NC		 3426elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3427 struct bfd_link_info *info,
3428 struct elf_link_hash_entry *h,
3429 Elf_Internal_Sym *sym)
a85d7ed0 3430{
0451c93c 3431 struct elf_s390_link_hash_table *htab;
470b557a 3432 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3433
0451c93c 3434 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3435 if (htab == NULL)
3436 return FALSE;
a85d7ed0
NC		 3437
3438 if (h->plt.offset != (bfd_vma) -1)
3439 {
a85d7ed0 3440 bfd_vma plt_index;
0451c93c
MS		 3441 bfd_vma got_offset;
3442 Elf_Internal_Rela rela;
947216bf 3443 bfd_byte *loc;
a85d7ed0
NC		 3444
3445 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3446 it up. */
0a511368 3447 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3448 {
0a511368
AK		 3449 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3450 htab, h->plt.offset,
3451 eh->ifunc_resolver_address +
3452 eh->ifunc_resolver_section->output_offset +
3453 eh->ifunc_resolver_section->output_section->vma);
3454
3455 /* Do not return yet. Handling of explicit GOT slots of
3456 IFUNC symbols is below. */
470b557a
AK		 3457 }
3458 else
3459 {
3460 if (h->dynindx == -1
3461 || htab->elf.splt == NULL
3462 || htab->elf.sgotplt == NULL
3463 || htab->elf.srelplt == NULL)
3464 abort ();
a85d7ed0 3465
470b557a
AK		 3466 /* Calc. index no.
3467 Current offset - size first entry / entry size. */
3468 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3469
470b557a
AK		 3470 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3471 addr & GOT addr. */
3472 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3473
470b557a
AK		 3474 /* Fill in the blueprint of a PLT. */
3475 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3476 PLT_ENTRY_SIZE);
3477
3478 /* Fixup the relative address to the GOT entry */
3479 bfd_put_32 (output_bfd,
3480 (htab->elf.sgotplt->output_section->vma +
3481 htab->elf.sgotplt->output_offset + got_offset
3482 - (htab->elf.splt->output_section->vma +
3483 htab->elf.splt->output_offset +
3484 h->plt.offset))/2,
3485 htab->elf.splt->contents + h->plt.offset + 2);
3486 /* Fixup the relative branch to PLT 0 */
3487 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3488 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3489 htab->elf.splt->contents + h->plt.offset + 24);
3490 /* Fixup offset into .rela.plt section. */
3491 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3492 htab->elf.splt->contents + h->plt.offset + 28);
3493
3494 /* Fill in the entry in the global offset table.
3495 Points to instruction after GOT offset. */
3496 bfd_put_64 (output_bfd,
3497 (htab->elf.splt->output_section->vma
3498 + htab->elf.splt->output_offset
3499 + h->plt.offset
3500 + 14),
3501 htab->elf.sgotplt->contents + got_offset);
3502
3503 /* Fill in the entry in the .rela.plt section. */
3504 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3505 + htab->elf.sgotplt->output_offset
3506 + got_offset);
3507 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3508 rela.r_addend = 0;
3509 loc = htab->elf.srelplt->contents + plt_index *
3510 sizeof (Elf64_External_Rela);
3511 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3512
3513 if (!h->def_regular)
3514 {
3515 /* Mark the symbol as undefined, rather than as defined in
3516 the .plt section. Leave the value alone. This is a clue
3517 for the dynamic linker, to make function pointer
3518 comparisons work between an application and shared
3519 library. */
3520 sym->st_shndx = SHN_UNDEF;
3521 }
a85d7ed0
NC		 3522 }
3523 }
3524
69fc87f1
MS		 3525 if (h->got.offset != (bfd_vma) -1
3526 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3527 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3528 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3529 {
a85d7ed0 3530 Elf_Internal_Rela rela;
947216bf 3531 bfd_byte *loc;
a85d7ed0
NC		 3532
3533 /* This symbol has an entry in the global offset table. Set it
947216bf 3534 up. */
f41345a7 3535 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3536 abort ();
a85d7ed0 3537
f41345a7
AK		 3538 rela.r_offset = (htab->elf.sgot->output_section->vma
3539 + htab->elf.sgot->output_offset
dc810e39 3540 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3541
470b557a
AK		 3542 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3543 {
0e1862bb 3544 if (bfd_link_pic (info))
470b557a
AK		 3545 {
3546 /* An explicit GOT slot usage needs GLOB_DAT. If the
3547 symbol references local the implicit got.iplt slot
3548 will be used and the IRELATIVE reloc has been created
3549 above. */
3550 goto do_glob_dat;
3551 }
3552 else
3553 {
3554 /* For non-shared objects explicit GOT slots must be
3555 filled with the PLT slot address for pointer
3556 equality reasons. */
3557 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3558 + htab->elf.iplt->output_offset
3559 + h->plt.offset),
3560 htab->elf.sgot->contents + h->got.offset);
3561 return TRUE;
3562 }
3563 }
0e1862bb 3564 else if (bfd_link_pic (info)
ceada896 3565 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3566 {
470b557a
AK		 3567 /* If this is a static link, or it is a -Bsymbolic link and
3568 the symbol is defined locally or was forced to be local
3569 because of a version file, we just want to emit a
3570 RELATIVE reloc. The entry in the global offset table
3571 will already have been initialized in the
3572 relocate_section function. */
8c21ca21
AK		 3573 if (!h->def_regular)
3574 return FALSE;
0451c93c 3575 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3576 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3577 rela.r_addend = (h->root.u.def.value
3578 + h->root.u.def.section->output_section->vma
3579 + h->root.u.def.section->output_offset);
3580 }
a85d7ed0
NC		 3581 else
3582 {
3583 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3584 do_glob_dat:
f41345a7 3585 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3586 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3587 rela.r_addend = 0;
3588 }
a85d7ed0 3589
f41345a7
AK		 3590 loc = htab->elf.srelgot->contents;
3591 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3592 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3593 }
3594
f5385ebf 3595 if (h->needs_copy)
a85d7ed0 3596 {
a85d7ed0 3597 Elf_Internal_Rela rela;
5474d94f 3598 asection *s;
947216bf 3599 bfd_byte *loc;
a85d7ed0
NC		 3600
3601 /* This symbols needs a copy reloc. Set it up. */
3602
0451c93c
MS		 3603 if (h->dynindx == -1
3604 || (h->root.type != bfd_link_hash_defined
3605 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3606 || htab->elf.srelbss == NULL)
0451c93c 3607 abort ();
a85d7ed0
NC		 3608
3609 rela.r_offset = (h->root.u.def.value
3610 + h->root.u.def.section->output_section->vma
3611 + h->root.u.def.section->output_offset);
3612 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3613 rela.r_addend = 0;
5474d94f
AM		 3614 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
3615 s = htab->elf.sreldynrelro;
3616 else
3617 s = htab->elf.srelbss;
3618 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3619 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3620 }
3621
3622 /* Mark some specially defined symbols as absolute. */
9637f6ef 3623 if (h == htab->elf.hdynamic
22edb2f1
RS		 3624 || h == htab->elf.hgot
3625 || h == htab->elf.hplt)
a85d7ed0
NC		 3626 sym->st_shndx = SHN_ABS;
3627
b34976b6 3628 return TRUE;
a85d7ed0
NC		 3629}
3630
0451c93c
MS		 3631/* Used to decide how to sort relocs in an optimal manner for the
3632 dynamic linker, before writing them out. */
3633
3634static enum elf_reloc_type_class
7e612e98
AM		 3635elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3636 const asection *rel_sec ATTRIBUTE_UNUSED,
3637 const Elf_Internal_Rela *rela)
0451c93c 3638{
0f042c67
AK		 3639 bfd *abfd = info->output_bfd;
3640 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3641 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3642 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3643 Elf_Internal_Sym sym;
3644
3645 if (htab->elf.dynsym == NULL
3646 || !bed->s->swap_symbol_in (abfd,
3647 (htab->elf.dynsym->contents
3648 + r_symndx * bed->s->sizeof_sym),
3649 0, &sym))
3650 abort ();
3651
3652 /* Check relocation against STT_GNU_IFUNC symbol. */
3653 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3654 return reloc_class_ifunc;
3655
0451c93c
MS		 3656 switch ((int) ELF64_R_TYPE (rela->r_info))
3657 {
3658 case R_390_RELATIVE:
3659 return reloc_class_relative;
3660 case R_390_JMP_SLOT:
3661 return reloc_class_plt;
3662 case R_390_COPY:
3663 return reloc_class_copy;
3664 default:
3665 return reloc_class_normal;
3666 }
3667}
3668
a85d7ed0
NC		 3669/* Finish up the dynamic sections. */
3670
b34976b6 3671static bfd_boolean
4dfe6ac6
NC		 3672elf_s390_finish_dynamic_sections (bfd *output_bfd,
3673 struct bfd_link_info *info)
a85d7ed0 3674{
0451c93c 3675 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3676 bfd *dynobj;
3677 asection *sdyn;
470b557a
AK		 3678 bfd *ibfd;
3679 unsigned int i;
a85d7ed0 3680
0451c93c 3681 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3682 if (htab == NULL)
3683 return FALSE;
3684
0451c93c 3685 dynobj = htab->elf.dynobj;
3d4d4302 3686 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3687
0451c93c 3688 if (htab->elf.dynamic_sections_created)
a85d7ed0 3689 {
a85d7ed0
NC		 3690 Elf64_External_Dyn *dyncon, *dynconend;
3691
f41345a7 3692 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3693 abort ();
a85d7ed0
NC		 3694
3695 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3696 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3697 for (; dyncon < dynconend; dyncon++)
3698 {
3699 Elf_Internal_Dyn dyn;
a85d7ed0 3700 asection *s;
ec338859 3701
a85d7ed0 3702 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3703
a85d7ed0
NC		 3704 switch (dyn.d_tag)
3705 {
3706 default:
0451c93c 3707 continue;
ec338859 3708
a85d7ed0 3709 case DT_PLTGOT:
4ade44b7
AM		 3710 s = htab->elf.sgotplt;
3711 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3712 break;
ec338859 3713
a85d7ed0 3714 case DT_JMPREL:
4ade44b7
AM		 3715 s = htab->elf.srelplt;
3716 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3717 break;
ec338859 3718
a85d7ed0 3719 case DT_PLTRELSZ:
f92339b8 3720 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
a85d7ed0 3721 break;
ec338859 3722
a85d7ed0
NC		 3723 case DT_RELASZ:
3724 /* The procedure linkage table relocs (DT_JMPREL) should
3725 not be included in the overall relocs (DT_RELA).
3726 Therefore, we override the DT_RELASZ entry here to
3727 make it not include the JMPREL relocs. Since the
3728 linker script arranges for .rela.plt to follow all
3729 other relocation sections, we don't have to worry
3730 about changing the DT_RELA entry. */
f92339b8 3731 dyn.d_un.d_val -= htab->elf.srelplt->size + htab->elf.irelplt->size;
a85d7ed0
NC		 3732 break;
3733 }
0451c93c
MS		 3734
3735 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3736 }
3737
3738 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3739 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3740 {
3741 /* fill in blueprint for plt 0 entry */
f41345a7 3742 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3743 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3744 /* Fixup relative address to start of GOT */
3745 bfd_put_32 (output_bfd,
161db279
AK		 3746 (htab->elf.sgotplt->output_section->vma
3747 + htab->elf.sgotplt->output_offset
3748 - htab->elf.splt->output_section->vma
3749 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3750 htab->elf.splt->contents + 8);
a85d7ed0 3751 }
387f8054
MR		 3752 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3753 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3754 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3755 }
3756
f41345a7 3757 if (htab->elf.sgotplt)
a85d7ed0 3758 {
0451c93c 3759 /* Fill in the first three entries in the global offset table. */
f41345a7 3760 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3761 {
3762 bfd_put_64 (output_bfd,
3763 (sdyn == NULL ? (bfd_vma) 0
3764 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3765 htab->elf.sgotplt->contents);
0451c93c 3766 /* One entry for shared object struct ptr. */
f41345a7 3767 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3768 /* One entry for _dl_runtime_resolve. */
3b67f094 3769 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
0451c93c 3770 }
a85d7ed0 3771
f41345a7 3772 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3773 ->this_hdr.sh_entsize = 8;
3774 }
470b557a
AK		 3775
3776 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3777 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3778 {
3779 struct plt_entry *local_plt;
3780 Elf_Internal_Sym *isym;
3781 Elf_Internal_Shdr *symtab_hdr;
3782
3783 symtab_hdr = &elf_symtab_hdr (ibfd);
3784
3785 local_plt = elf_s390_local_plt (ibfd);
3786 if (local_plt != NULL)
3787 for (i = 0; i < symtab_hdr->sh_info; i++)
3788 {
3789 if (local_plt[i].plt.offset != (bfd_vma) -1)
3790 {
3791 asection *sec = local_plt[i].sec;
3792 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3793 if (isym == NULL)
3794 return FALSE;
3795
3796 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3797 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3798 local_plt[i].plt.offset,
3799 isym->st_value
3800 + sec->output_section->vma
3801 + sec->output_offset);
3802
3803 }
3804 }
3805 }
3806
b34976b6 3807 return TRUE;
a85d7ed0 3808}
e3e9290d
AA		 3809\f
3810/* Support for core dump NOTE sections. */
a85d7ed0 3811
e3e9290d
AA		 3812static bfd_boolean
3813elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3814{
3815 int offset;
3816 size_t size;
3817
3818 switch (note->descsz)
3819 {
3820 default:
3821 return FALSE;
3822
3823 case 336: /* sizeof(struct elf_prstatus) on s390x */
3824 /* pr_cursig */
3825 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3826
3827 /* pr_pid */
3828 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3829
3830 /* pr_reg */
3831 offset = 112;
3832 size = 216;
3833 break;
3834 }
3835
3836 /* Make a ".reg/999" section. */
3837 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3838 size, note->descpos + offset);
3839}
3840
3841static bfd_boolean
3842elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3843{
3844 switch (note->descsz)
3845 {
3846 default:
3847 return FALSE;
3848
3849 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3850 elf_tdata (abfd)->core->pid
3851 = bfd_get_32 (abfd, note->descdata + 24);
3852 elf_tdata (abfd)->core->program
3853 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3854 elf_tdata (abfd)->core->command
3855 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3856 }
3857
3858 /* Note that for some reason, a spurious space is tacked
3859 onto the end of the args in some (at least one anyway)
3860 implementations, so strip it off if it exists. */
3861
3862 {
3863 char *command = elf_tdata (abfd)->core->command;
3864 int n = strlen (command);
3865
3866 if (0 < n && command[n - 1] == ' ')
3867 command[n - 1] = '\0';
3868 }
3869
3870 return TRUE;
3871}
3872
3873static char *
3874elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3875 int note_type, ...)
3876{
3877 va_list ap;
3878
3879 switch (note_type)
3880 {
3881 default:
3882 return NULL;
3883
3884 case NT_PRPSINFO:
3885 {
3886 char data[136] = { 0 };
3887 const char *fname, *psargs;
3888
3889 va_start (ap, note_type);
3890 fname = va_arg (ap, const char *);
3891 psargs = va_arg (ap, const char *);
3892 va_end (ap);
3893
3894 strncpy (data + 40, fname, 16);
3895 strncpy (data + 56, psargs, 80);
3896 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3897 &data, sizeof (data));
3898 }
3899
3900 case NT_PRSTATUS:
3901 {
3902 char data[336] = { 0 };
3903 long pid;
3904 int cursig;
3905 const void *gregs;
3906
3907 va_start (ap, note_type);
3908 pid = va_arg (ap, long);
3909 cursig = va_arg (ap, int);
3910 gregs = va_arg (ap, const void *);
3911 va_end (ap);
3912
3913 bfd_put_16 (abfd, cursig, data + 12);
3914 bfd_put_32 (abfd, pid, data + 32);
3915 memcpy (data + 112, gregs, 216);
3916 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3917 &data, sizeof (data));
3918 }
3919 }
3920 /* NOTREACHED */
3921}
3922\f
4c45e5c9
JJ		 3923/* Return address for Ith PLT stub in section PLT, for relocation REL
3924 or (bfd_vma) -1 if it should not be included. */
3925
3926static bfd_vma
3927elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3928 const arelent *rel ATTRIBUTE_UNUSED)
3929{
3930 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3931}
3932
643f7afb
AK		 3933/* Merge backend specific data from an object file to the output
3934 object file when linking. */
3935
3936static bfd_boolean
50e03d47 3937elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3938{
50e03d47 3939 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3940 return TRUE;
3941
50e03d47 3942 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3943}
3944
ae9a127f
NC		 3945/* Why was the hash table entry size definition changed from
3946 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3947 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3948
3949const struct elf_size_info s390_elf64_size_info =
3950{
3951 sizeof (Elf64_External_Ehdr),
3952 sizeof (Elf64_External_Phdr),
3953 sizeof (Elf64_External_Shdr),
3954 sizeof (Elf64_External_Rel),
3955 sizeof (Elf64_External_Rela),
3956 sizeof (Elf64_External_Sym),
3957 sizeof (Elf64_External_Dyn),
3958 sizeof (Elf_External_Note),
ae9a127f
NC		 3959 8, /* hash-table entry size. */
3960 1, /* internal relocations per external relocations. */
3961 64, /* arch_size. */
45d6a902 3962 3, /* log_file_align. */
a85d7ed0
NC		 3963 ELFCLASS64, EV_CURRENT,
3964 bfd_elf64_write_out_phdrs,
3965 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3966 bfd_elf64_checksum_contents,
a85d7ed0 3967 bfd_elf64_write_relocs,
73ff0d56 3968 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3969 bfd_elf64_swap_symbol_out,
3970 bfd_elf64_slurp_reloc_table,
3971 bfd_elf64_slurp_symbol_table,
3972 bfd_elf64_swap_dyn_in,
3973 bfd_elf64_swap_dyn_out,
947216bf
AM		 3974 bfd_elf64_swap_reloc_in,
3975 bfd_elf64_swap_reloc_out,
3976 bfd_elf64_swap_reloca_in,
3977 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3978};
3979
6d00b590 3980#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3981#define TARGET_BIG_NAME "elf64-s390"
3982#define ELF_ARCH bfd_arch_s390
ae95ffa6 3983#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3984#define ELF_MACHINE_CODE EM_S390
3985#define ELF_MACHINE_ALT1 EM_S390_OLD
3986#define ELF_MAXPAGESIZE 0x1000
3987
3988#define elf_backend_size_info s390_elf64_size_info
3989
3990#define elf_backend_can_gc_sections 1
51b64d56 3991#define elf_backend_can_refcount 1
a85d7ed0
NC		 3992#define elf_backend_want_got_plt 1
3993#define elf_backend_plt_readonly 1
3994#define elf_backend_want_plt_sym 0
3995#define elf_backend_got_header_size 24
5474d94f 3996#define elf_backend_want_dynrelro 1
b491616a 3997#define elf_backend_rela_normal 1
a85d7ed0
NC		 3998
3999#define elf_info_to_howto elf_s390_info_to_howto
4000
a85d7ed0
NC		 4001#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
4002#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
4003#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
643f7afb
AK		 4004#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4005#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 4006
4007#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4008#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 4009#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4010#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 4011#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4012#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4013#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4014#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4015#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 4016#define elf_backend_relocate_section elf_s390_relocate_section
4017#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4018#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 4019#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4020#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4021#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4022#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4023#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4024#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 4025
69fc87f1
MS		 4026#define bfd_elf64_mkobject elf_s390_mkobject
4027#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4028
4029#include "elf64-target.h"
GDB Binutils - Deliverables
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