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[thirdparty/binutils-gdb.git] / bfd / elf64-s390.c
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a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
6f2750fe 2 Copyright (C) 2000-2016 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0
NC		 27#include "elf/s390.h"
28
29/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
30 from smaller values. Start with zero, widen, *then* decrement. */
31#define MINUS_ONE (((bfd_vma)0) - 1)
32
2c3fc389
NC		 33static bfd_reloc_status_type
34s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36static bfd_reloc_status_type
37s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
38 asection *, bfd *, char **);
39
a85d7ed0
NC		 40/* The relocation "howto" table. */
41static reloc_howto_type elf_howto_table[] =
42{
43 HOWTO (R_390_NONE, /* type */
44 0, /* rightshift */
6346d5ca 45 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 46 0, /* bitsize */
b34976b6 47 FALSE, /* pc_relative */
a85d7ed0
NC		 48 0, /* bitpos */
49 complain_overflow_dont, /* complain_on_overflow */
50 bfd_elf_generic_reloc, /* special_function */
51 "R_390_NONE", /* name */
b34976b6 52 FALSE, /* partial_inplace */
a85d7ed0
NC		 53 0, /* src_mask */
54 0, /* dst_mask */
b34976b6
AM		 55 FALSE), /* pcrel_offset */
56
5236c819
MS		 57 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
58 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
59 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
60 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
61 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
63 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
65 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 67 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 68 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
69 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
71 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
73 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
75 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
77 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
79 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
81 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
83 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
85 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
87 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
93 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
97 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
99 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
100 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
101 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
103 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
105 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
107 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
109 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
111 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
113 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
114 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
115 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
119 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
121 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
123 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
125 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 129 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
130 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
131 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
133 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
135 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
136 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
138 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
139 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
140 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
141 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
143 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
144 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
146 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
147 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
149 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
151 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
152 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
154 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
155 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
157 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
159 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
161 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
bd1ea41b
MS		 163 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
164 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
165 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
166 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
167 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
169 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
170 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 171 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
fb798c50
AK		 173 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
175 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
177 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
178 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
179 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 181};
182
183/* GNU extension to record C++ vtable hierarchy. */
184static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 185 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 186static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 187 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 188
189static reloc_howto_type *
2c3fc389
NC		 190elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
191 bfd_reloc_code_real_type code)
a85d7ed0 192{
0451c93c
MS		 193 switch (code)
194 {
195 case BFD_RELOC_NONE:
196 return &elf_howto_table[(int) R_390_NONE];
197 case BFD_RELOC_8:
198 return &elf_howto_table[(int) R_390_8];
199 case BFD_RELOC_390_12:
200 return &elf_howto_table[(int) R_390_12];
201 case BFD_RELOC_16:
202 return &elf_howto_table[(int) R_390_16];
203 case BFD_RELOC_32:
204 return &elf_howto_table[(int) R_390_32];
205 case BFD_RELOC_CTOR:
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_32_PCREL:
208 return &elf_howto_table[(int) R_390_PC32];
209 case BFD_RELOC_390_GOT12:
210 return &elf_howto_table[(int) R_390_GOT12];
211 case BFD_RELOC_32_GOT_PCREL:
212 return &elf_howto_table[(int) R_390_GOT32];
213 case BFD_RELOC_390_PLT32:
214 return &elf_howto_table[(int) R_390_PLT32];
215 case BFD_RELOC_390_COPY:
216 return &elf_howto_table[(int) R_390_COPY];
217 case BFD_RELOC_390_GLOB_DAT:
218 return &elf_howto_table[(int) R_390_GLOB_DAT];
219 case BFD_RELOC_390_JMP_SLOT:
220 return &elf_howto_table[(int) R_390_JMP_SLOT];
221 case BFD_RELOC_390_RELATIVE:
222 return &elf_howto_table[(int) R_390_RELATIVE];
223 case BFD_RELOC_32_GOTOFF:
5236c819 224 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 225 case BFD_RELOC_390_GOTPC:
226 return &elf_howto_table[(int) R_390_GOTPC];
227 case BFD_RELOC_390_GOT16:
228 return &elf_howto_table[(int) R_390_GOT16];
229 case BFD_RELOC_16_PCREL:
230 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 231 case BFD_RELOC_390_PC12DBL:
232 return &elf_howto_table[(int) R_390_PC12DBL];
233 case BFD_RELOC_390_PLT12DBL:
234 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 235 case BFD_RELOC_390_PC16DBL:
236 return &elf_howto_table[(int) R_390_PC16DBL];
237 case BFD_RELOC_390_PLT16DBL:
238 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 239 case BFD_RELOC_390_PC24DBL:
240 return &elf_howto_table[(int) R_390_PC24DBL];
241 case BFD_RELOC_390_PLT24DBL:
242 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS		 243 case BFD_RELOC_390_PC32DBL:
244 return &elf_howto_table[(int) R_390_PC32DBL];
245 case BFD_RELOC_390_PLT32DBL:
246 return &elf_howto_table[(int) R_390_PLT32DBL];
247 case BFD_RELOC_390_GOTPCDBL:
248 return &elf_howto_table[(int) R_390_GOTPCDBL];
249 case BFD_RELOC_64:
250 return &elf_howto_table[(int) R_390_64];
251 case BFD_RELOC_64_PCREL:
252 return &elf_howto_table[(int) R_390_PC64];
253 case BFD_RELOC_390_GOT64:
254 return &elf_howto_table[(int) R_390_GOT64];
255 case BFD_RELOC_390_PLT64:
256 return &elf_howto_table[(int) R_390_PLT64];
257 case BFD_RELOC_390_GOTENT:
258 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 259 case BFD_RELOC_16_GOTOFF:
260 return &elf_howto_table[(int) R_390_GOTOFF16];
261 case BFD_RELOC_390_GOTOFF64:
262 return &elf_howto_table[(int) R_390_GOTOFF64];
263 case BFD_RELOC_390_GOTPLT12:
264 return &elf_howto_table[(int) R_390_GOTPLT12];
265 case BFD_RELOC_390_GOTPLT16:
266 return &elf_howto_table[(int) R_390_GOTPLT16];
267 case BFD_RELOC_390_GOTPLT32:
268 return &elf_howto_table[(int) R_390_GOTPLT32];
269 case BFD_RELOC_390_GOTPLT64:
270 return &elf_howto_table[(int) R_390_GOTPLT64];
271 case BFD_RELOC_390_GOTPLTENT:
272 return &elf_howto_table[(int) R_390_GOTPLTENT];
273 case BFD_RELOC_390_PLTOFF16:
274 return &elf_howto_table[(int) R_390_PLTOFF16];
275 case BFD_RELOC_390_PLTOFF32:
276 return &elf_howto_table[(int) R_390_PLTOFF32];
277 case BFD_RELOC_390_PLTOFF64:
278 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 279 case BFD_RELOC_390_TLS_LOAD:
280 return &elf_howto_table[(int) R_390_TLS_LOAD];
281 case BFD_RELOC_390_TLS_GDCALL:
282 return &elf_howto_table[(int) R_390_TLS_GDCALL];
283 case BFD_RELOC_390_TLS_LDCALL:
284 return &elf_howto_table[(int) R_390_TLS_LDCALL];
285 case BFD_RELOC_390_TLS_GD64:
286 return &elf_howto_table[(int) R_390_TLS_GD64];
287 case BFD_RELOC_390_TLS_GOTIE12:
288 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
289 case BFD_RELOC_390_TLS_GOTIE64:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
291 case BFD_RELOC_390_TLS_LDM64:
292 return &elf_howto_table[(int) R_390_TLS_LDM64];
293 case BFD_RELOC_390_TLS_IE64:
294 return &elf_howto_table[(int) R_390_TLS_IE64];
295 case BFD_RELOC_390_TLS_IEENT:
296 return &elf_howto_table[(int) R_390_TLS_IEENT];
297 case BFD_RELOC_390_TLS_LE64:
298 return &elf_howto_table[(int) R_390_TLS_LE64];
299 case BFD_RELOC_390_TLS_LDO64:
300 return &elf_howto_table[(int) R_390_TLS_LDO64];
301 case BFD_RELOC_390_TLS_DTPMOD:
302 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
303 case BFD_RELOC_390_TLS_DTPOFF:
304 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
305 case BFD_RELOC_390_TLS_TPOFF:
306 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 307 case BFD_RELOC_390_20:
308 return &elf_howto_table[(int) R_390_20];
309 case BFD_RELOC_390_GOT20:
310 return &elf_howto_table[(int) R_390_GOT20];
311 case BFD_RELOC_390_GOTPLT20:
312 return &elf_howto_table[(int) R_390_GOTPLT20];
313 case BFD_RELOC_390_TLS_GOTIE20:
314 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 315 case BFD_RELOC_390_IRELATIVE:
316 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 317 case BFD_RELOC_VTABLE_INHERIT:
318 return &elf64_s390_vtinherit_howto;
319 case BFD_RELOC_VTABLE_ENTRY:
320 return &elf64_s390_vtentry_howto;
0451c93c
MS		 321 default:
322 break;
323 }
a85d7ed0
NC		 324 return 0;
325}
326
157090f7
AM		 327static reloc_howto_type *
328elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
329 const char *r_name)
330{
331 unsigned int i;
332
333 for (i = 0;
334 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
335 i++)
336 if (elf_howto_table[i].name != NULL
337 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
338 return &elf_howto_table[i];
339
340 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
341 return &elf64_s390_vtinherit_howto;
342 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
343 return &elf64_s390_vtentry_howto;
344
345 return NULL;
346}
347
a85d7ed0
NC		 348/* We need to use ELF64_R_TYPE so we have our own copy of this function,
349 and elf64-s390.c has its own copy. */
350
351static void
2c3fc389
NC		 352elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
353 arelent *cache_ptr,
354 Elf_Internal_Rela *dst)
a85d7ed0 355{
d0fb9a8d
JJ		 356 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
357 switch (r_type)
a85d7ed0
NC		 358 {
359 case R_390_GNU_VTINHERIT:
360 cache_ptr->howto = &elf64_s390_vtinherit_howto;
361 break;
362
363 case R_390_GNU_VTENTRY:
364 cache_ptr->howto = &elf64_s390_vtentry_howto;
365 break;
366
367 default:
d0fb9a8d
JJ		 368 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
369 {
370 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
371 abfd, (int) r_type);
372 r_type = R_390_NONE;
373 }
374 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 375 }
a85d7ed0
NC		 376}
377
69fc87f1
MS		 378/* A relocation function which doesn't do anything. */
379static bfd_reloc_status_type
2c3fc389
NC		 380s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
381 arelent *reloc_entry,
382 asymbol *symbol ATTRIBUTE_UNUSED,
383 void * data ATTRIBUTE_UNUSED,
384 asection *input_section,
385 bfd *output_bfd,
386 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 387{
388 if (output_bfd)
389 reloc_entry->address += input_section->output_offset;
390 return bfd_reloc_ok;
391}
392
bd1ea41b
MS		 393/* Handle the large displacement relocs. */
394static bfd_reloc_status_type
2c3fc389
NC		 395s390_elf_ldisp_reloc (bfd *abfd,
396 arelent *reloc_entry,
397 asymbol *symbol,
398 void * data,
399 asection *input_section,
400 bfd *output_bfd,
401 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 402{
403 reloc_howto_type *howto = reloc_entry->howto;
404 bfd_vma relocation;
405 bfd_vma insn;
406
407 if (output_bfd != (bfd *) NULL
408 && (symbol->flags & BSF_SECTION_SYM) == 0
409 && (! howto->partial_inplace
410 || reloc_entry->addend == 0))
411 {
412 reloc_entry->address += input_section->output_offset;
413 return bfd_reloc_ok;
414 }
415 if (output_bfd != NULL)
416 return bfd_reloc_continue;
417
07515404 418 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 419 return bfd_reloc_outofrange;
420
421 relocation = (symbol->value
422 + symbol->section->output_section->vma
423 + symbol->section->output_offset);
424 relocation += reloc_entry->addend;
425 if (howto->pc_relative)
426 {
427 relocation -= (input_section->output_section->vma
428 + input_section->output_offset);
429 relocation -= reloc_entry->address;
430 }
431
68ffbac6 432 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 433 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
434 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
435
436 if ((bfd_signed_vma) relocation < - 0x80000
437 || (bfd_signed_vma) relocation > 0x7ffff)
438 return bfd_reloc_overflow;
439 else
440 return bfd_reloc_ok;
441}
442
b34976b6 443static bfd_boolean
2c3fc389 444elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 445{
446 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 447 return TRUE;
a85d7ed0
NC		 448
449 return _bfd_elf_is_local_label_name (abfd, name);
450}
451
452/* Functions for the 390 ELF linker. */
453
454/* The name of the dynamic interpreter. This is put in the .interp
455 section. */
456
87049b0d 457#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 458
64285810
MS		 459/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
460 copying dynamic variables from a shared lib into an app's dynbss
461 section, and instead use a dynamic relocation to point into the
462 shared lib. */
463#define ELIMINATE_COPY_RELOCS 1
464
a85d7ed0
NC		 465/* The size in bytes of the first entry in the procedure linkage table. */
466#define PLT_FIRST_ENTRY_SIZE 32
467/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 468#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 469
470#define GOT_ENTRY_SIZE 8
471
470b557a
AK		 472#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
473
a85d7ed0
NC		 474/* The first three entries in a procedure linkage table are reserved,
475 and the initial contents are unimportant (we zero them out).
476 Subsequent entries look like this. See the SVR4 ABI 386
477 supplement to see how this works. */
478
479/* For the s390, simple addr offset can only be 0 - 4096.
480 To use the full 16777216 TB address space, several instructions
481 are needed to load an address in a register and execute
482 a branch( or just saving the address)
483
99c79b2e 484 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 485
486/* The first 3 words in the GOT are then reserved.
487 Word 0 is the address of the dynamic table.
488 Word 1 is a pointer to a structure describing the object
489 Word 2 is used to point to the loader entry address.
490
491 The code for PLT entries looks like this:
492
493 The GOT holds the address in the PLT to be executed.
494 The loader then gets:
495 24(15) = Pointer to the structure describing the object.
99c79b2e 496 28(15) = Offset in symbol table
a85d7ed0
NC		 497 The loader must then find the module where the function is
498 and insert the address in the GOT.
499
500 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
501 LG 1,0(1) # 6 bytes Load address from GOT in r1
502 BCR 15,1 # 2 bytes Jump to address
503 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
504 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
505 BRCL 15,-x # 6 bytes Jump to start of PLT
a7e28bbe 506 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 507
508 Total = 32 bytes per PLT entry
509 Fixup at offset 2: relative address to GOT entry
510 Fixup at offset 22: relative branch to PLT0
a7e28bbe 511 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 512
a7e28bbe
AK		 513 A 32 bit offset into the symbol table is enough. It allows for
514 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
515 object (the main program, any shared library) is limited to 4GB in
516 size. Having a .rela.plt of 2GB would already make the .plt
517 section bigger than 8GB. */
a85d7ed0 518
9aa17453
AK		 519static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
520 {
521 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
522 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
523 0x07, 0xf1, /* br %r1 */
524 0x0d, 0x10, /* basr %r1,%r0 */
525 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
526 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
527 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
528 };
a85d7ed0
NC		 529
530/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 531 from R1 onto the stack at 56(15) and the loader object info
532 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 533
534/* The first entry in the PLT:
535
536 PLT0:
537 STG 1,56(15) # r1 contains the offset into the symbol table
538 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
539 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
540 LG 1,16(1) # get entry address of loader
541 BCR 15,1 # jump to loader
542
543 Fixup at offset 8: relative address to start of GOT. */
544
9aa17453
AK		 545static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
546 {
547 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
548 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
549 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
550 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
551 0x07, 0xf1, /* br %r1 */
552 0x07, 0x00, /* nopr %r0 */
553 0x07, 0x00, /* nopr %r0 */
554 0x07, 0x00 /* nopr %r0 */
555 };
a85d7ed0 556
a85d7ed0
NC		 557
558/* s390 ELF linker hash entry. */
559
560struct elf_s390_link_hash_entry
561{
0451c93c 562 struct elf_link_hash_entry elf;
a85d7ed0 563
0451c93c 564 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 565 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 566
567 /* Number of GOTPLT references for a function. */
568 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 569
570#define GOT_UNKNOWN 0
571#define GOT_NORMAL 1
572#define GOT_TLS_GD 2
573#define GOT_TLS_IE 3
574#define GOT_TLS_IE_NLT 3
575 unsigned char tls_type;
470b557a
AK		 576
577 /* For pointer equality reasons we might need to change the symbol
578 type from STT_GNU_IFUNC to STT_FUNC together with its value and
579 section entry. So after alloc_dynrelocs only these values should
580 be used. In order to check whether a symbol is IFUNC use
581 s390_is_ifunc_symbol_p. */
582 bfd_vma ifunc_resolver_address;
583 asection *ifunc_resolver_section;
a85d7ed0
NC		 584};
585
69fc87f1
MS		 586#define elf_s390_hash_entry(ent) \
587 ((struct elf_s390_link_hash_entry *)(ent))
588
470b557a
AK		 589/* This structure represents an entry in the local PLT list needed for
590 local IFUNC symbols. */
591struct plt_entry
592{
593 /* The section of the local symbol.
594 Set in relocate_section and used in finish_dynamic_sections. */
595 asection *sec;
596
597 union
598 {
599 bfd_signed_vma refcount;
600 bfd_vma offset;
601 } plt;
602};
603
0ffa91dd
NC		 604/* NOTE: Keep this structure in sync with
605 the one declared in elf32-s390.c. */
69fc87f1
MS		 606struct elf_s390_obj_tdata
607{
608 struct elf_obj_tdata root;
609
470b557a
AK		 610 /* A local PLT is needed for ifunc symbols. */
611 struct plt_entry *local_plt;
612
0ffa91dd 613 /* TLS type for each local got entry. */
69fc87f1
MS		 614 char *local_got_tls_type;
615};
616
617#define elf_s390_tdata(abfd) \
618 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
619
470b557a
AK		 620#define elf_s390_local_plt(abfd) \
621 (elf_s390_tdata (abfd)->local_plt)
622
69fc87f1
MS		 623#define elf_s390_local_got_tls_type(abfd) \
624 (elf_s390_tdata (abfd)->local_got_tls_type)
625
0ffa91dd
NC		 626#define is_s390_elf(bfd) \
627 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
628 && elf_tdata (bfd) != NULL \
4dfe6ac6 629 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 630
69fc87f1 631static bfd_boolean
62d7a5f6 632elf_s390_mkobject (bfd *abfd)
69fc87f1 633{
0ffa91dd 634 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 635 S390_ELF_DATA);
69fc87f1
MS		 636}
637
638static bfd_boolean
2c3fc389 639elf_s390_object_p (bfd *abfd)
69fc87f1 640{
69fc87f1
MS		 641 /* Set the right machine number for an s390 elf32 file. */
642 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
643}
644
a85d7ed0
NC		 645/* s390 ELF linker hash table. */
646
647struct elf_s390_link_hash_table
648{
0451c93c 649 struct elf_link_hash_table elf;
a85d7ed0 650
0451c93c 651 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS		 652 asection *sdynbss;
653 asection *srelbss;
470b557a 654 asection *irelifunc;
ec338859 655
69fc87f1
MS		 656 union {
657 bfd_signed_vma refcount;
658 bfd_vma offset;
659 } tls_ldm_got;
660
87d72d41
AM		 661 /* Small local sym cache. */
662 struct sym_cache sym_cache;
0451c93c 663};
a85d7ed0
NC		 664
665/* Get the s390 ELF linker hash table from a link_info structure. */
666
667#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 668 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
669 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 670
470b557a
AK		 671#define ELF64 1
672#include "elf-s390-common.c"
673
a85d7ed0
NC		 674/* Create an entry in an s390 ELF linker hash table. */
675
676static struct bfd_hash_entry *
2c3fc389
NC		 677link_hash_newfunc (struct bfd_hash_entry *entry,
678 struct bfd_hash_table *table,
679 const char *string)
a85d7ed0 680{
a85d7ed0
NC		 681 /* Allocate the structure if it has not already been allocated by a
682 subclass. */
0451c93c
MS		 683 if (entry == NULL)
684 {
685 entry = bfd_hash_allocate (table,
686 sizeof (struct elf_s390_link_hash_entry));
687 if (entry == NULL)
688 return entry;
689 }
a85d7ed0
NC		 690
691 /* Call the allocation method of the superclass. */
0451c93c
MS		 692 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
693 if (entry != NULL)
a85d7ed0 694 {
0451c93c
MS		 695 struct elf_s390_link_hash_entry *eh;
696
697 eh = (struct elf_s390_link_hash_entry *) entry;
698 eh->dyn_relocs = NULL;
5236c819 699 eh->gotplt_refcount = 0;
69fc87f1 700 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 701 eh->ifunc_resolver_address = 0;
702 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 703 }
704
0451c93c 705 return entry;
a85d7ed0
NC		 706}
707
708/* Create an s390 ELF linker hash table. */
709
710static struct bfd_link_hash_table *
2c3fc389 711elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 712{
713 struct elf_s390_link_hash_table *ret;
dc810e39 714 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 715
7bf52ea2 716 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 717 if (ret == NULL)
a85d7ed0
NC		 718 return NULL;
719
66eb6687 720 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 721 sizeof (struct elf_s390_link_hash_entry),
722 S390_ELF_DATA))
a85d7ed0 723 {
e2d34d7d 724 free (ret);
a85d7ed0
NC		 725 return NULL;
726 }
727
0451c93c
MS		 728 return &ret->elf.root;
729}
730
731/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
732 shortcuts to them in our hash table. */
733
b34976b6 734static bfd_boolean
4dfe6ac6
NC		 735create_got_section (bfd *dynobj,
736 struct bfd_link_info *info)
0451c93c
MS		 737{
738 struct elf_s390_link_hash_table *htab;
739
740 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 741 return FALSE;
0451c93c
MS		 742
743 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 744 if (htab == NULL)
745 return FALSE;
746
3d4d4302
AM		 747 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
748 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
749 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 750 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c 751 abort ();
b34976b6 752 return TRUE;
0451c93c
MS		 753}
754
755/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
756 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
757 hash table. */
758
b34976b6 759static bfd_boolean
4dfe6ac6
NC		 760elf_s390_create_dynamic_sections (bfd *dynobj,
761 struct bfd_link_info *info)
0451c93c
MS		 762{
763 struct elf_s390_link_hash_table *htab;
764
765 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 766 if (htab == NULL)
767 return FALSE;
768
f41345a7 769 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 770 return FALSE;
0451c93c
MS		 771
772 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 773 return FALSE;
0451c93c 774
3d4d4302
AM		 775 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
776 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
777 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 778 if (!bfd_link_pic (info))
3d4d4302 779 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 780
f41345a7 781 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0e1862bb 782 || (!bfd_link_pic (info) && !htab->srelbss))
0451c93c
MS		 783 abort ();
784
b34976b6 785 return TRUE;
a85d7ed0
NC		 786}
787
0451c93c
MS		 788/* Copy the extra info we tack onto an elf_link_hash_entry. */
789
790static void
2c3fc389
NC		 791elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
792 struct elf_link_hash_entry *dir,
793 struct elf_link_hash_entry *ind)
0451c93c
MS		 794{
795 struct elf_s390_link_hash_entry *edir, *eind;
796
797 edir = (struct elf_s390_link_hash_entry *) dir;
798 eind = (struct elf_s390_link_hash_entry *) ind;
799
800 if (eind->dyn_relocs != NULL)
801 {
802 if (edir->dyn_relocs != NULL)
803 {
00d8c7a9
AK		 804 struct elf_dyn_relocs **pp;
805 struct elf_dyn_relocs *p;
0451c93c 806
fcfa13d2 807 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 808 list. Merge any entries against the same section. */
809 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
810 {
00d8c7a9 811 struct elf_dyn_relocs *q;
0451c93c
MS		 812
813 for (q = edir->dyn_relocs; q != NULL; q = q->next)
814 if (q->sec == p->sec)
815 {
816 q->pc_count += p->pc_count;
817 q->count += p->count;
818 *pp = p->next;
819 break;
820 }
821 if (q == NULL)
822 pp = &p->next;
823 }
824 *pp = edir->dyn_relocs;
825 }
826
827 edir->dyn_relocs = eind->dyn_relocs;
828 eind->dyn_relocs = NULL;
829 }
830
69fc87f1
MS		 831 if (ind->root.type == bfd_link_hash_indirect
832 && dir->got.refcount <= 0)
833 {
834 edir->tls_type = eind->tls_type;
835 eind->tls_type = GOT_UNKNOWN;
836 }
837
64285810
MS		 838 if (ELIMINATE_COPY_RELOCS
839 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 840 && dir->dynamic_adjusted)
841 {
842 /* If called to transfer flags for a weakdef during processing
843 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
844 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
845 dir->ref_dynamic |= ind->ref_dynamic;
846 dir->ref_regular |= ind->ref_regular;
847 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
848 dir->needs_plt |= ind->needs_plt;
849 }
64285810 850 else
fcfa13d2 851 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 852}
a85d7ed0 853
69fc87f1 854static int
2c3fc389
NC		 855elf_s390_tls_transition (struct bfd_link_info *info,
856 int r_type,
857 int is_local)
69fc87f1 858{
0e1862bb 859 if (bfd_link_pic (info))
69fc87f1
MS		 860 return r_type;
861
862 switch (r_type)
863 {
864 case R_390_TLS_GD64:
865 case R_390_TLS_IE64:
866 if (is_local)
867 return R_390_TLS_LE64;
868 return R_390_TLS_IE64;
869 case R_390_TLS_GOTIE64:
870 if (is_local)
871 return R_390_TLS_LE64;
872 return R_390_TLS_GOTIE64;
873 case R_390_TLS_LDM64:
874 return R_390_TLS_LE64;
875 }
876
877 return r_type;
878}
879
a85d7ed0
NC		 880/* Look through the relocs for a section during the first phase, and
881 allocate space in the global offset table or procedure linkage
882 table. */
883
b34976b6 884static bfd_boolean
4dfe6ac6
NC		 885elf_s390_check_relocs (bfd *abfd,
886 struct bfd_link_info *info,
887 asection *sec,
888 const Elf_Internal_Rela *relocs)
a85d7ed0 889{
0451c93c 890 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 891 Elf_Internal_Shdr *symtab_hdr;
892 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 893 const Elf_Internal_Rela *rel;
894 const Elf_Internal_Rela *rel_end;
a85d7ed0 895 asection *sreloc;
5236c819 896 bfd_signed_vma *local_got_refcounts;
69fc87f1 897 int tls_type, old_tls_type;
a85d7ed0 898
0e1862bb 899 if (bfd_link_relocatable (info))
b34976b6 900 return TRUE;
a85d7ed0 901
0ffa91dd
NC		 902 BFD_ASSERT (is_s390_elf (abfd));
903
0451c93c 904 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 905 if (htab == NULL)
906 return FALSE;
907
0ffa91dd 908 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 909 sym_hashes = elf_sym_hashes (abfd);
5236c819 910 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 911
a85d7ed0
NC		 912 sreloc = NULL;
913
914 rel_end = relocs + sec->reloc_count;
915 for (rel = relocs; rel < rel_end; rel++)
916 {
69fc87f1 917 unsigned int r_type;
a85d7ed0
NC		 918 unsigned long r_symndx;
919 struct elf_link_hash_entry *h;
470b557a 920 Elf_Internal_Sym *isym;
a85d7ed0
NC		 921
922 r_symndx = ELF64_R_SYM (rel->r_info);
923
0451c93c
MS		 924 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
925 {
d003868e
AM		 926 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
927 abfd,
0451c93c 928 r_symndx);
b34976b6 929 return FALSE;
0451c93c
MS		 930 }
931
a85d7ed0 932 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 933 {
934 /* A local symbol. */
935 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
936 abfd, r_symndx);
937 if (isym == NULL)
938 return FALSE;
939
940 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
941 {
942 struct plt_entry *plt;
943
0cb79d69
AK		 944 if (htab->elf.dynobj == NULL)
945 htab->elf.dynobj = abfd;
946
470b557a
AK		 947 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
948 return FALSE;
949
950 if (local_got_refcounts == NULL)
951 {
952 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
953 return FALSE;
954 local_got_refcounts = elf_local_got_refcounts (abfd);
955 }
956 plt = elf_s390_local_plt (abfd);
957 plt[r_symndx].plt.refcount++;
958 }
959 h = NULL;
960 }
a85d7ed0 961 else
973a3492
L		 962 {
963 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
964 while (h->root.type == bfd_link_hash_indirect
965 || h->root.type == bfd_link_hash_warning)
966 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 967
968 /* PR15323, ref flags aren't set for references in the same
969 object. */
970 h->root.non_ir_ref = 1;
973a3492 971 }
a85d7ed0 972
5236c819
MS		 973 /* Create got section and local_got_refcounts array if they
974 are needed. */
69fc87f1
MS		 975 r_type = elf_s390_tls_transition (info,
976 ELF64_R_TYPE (rel->r_info),
977 h == NULL);
978 switch (r_type)
a85d7ed0
NC		 979 {
980 case R_390_GOT12:
947216bf 981 case R_390_GOT16:
bd1ea41b 982 case R_390_GOT20:
a85d7ed0
NC		 983 case R_390_GOT32:
984 case R_390_GOT64:
985 case R_390_GOTENT:
5236c819
MS		 986 case R_390_GOTPLT12:
987 case R_390_GOTPLT16:
bd1ea41b 988 case R_390_GOTPLT20:
5236c819
MS		 989 case R_390_GOTPLT32:
990 case R_390_GOTPLT64:
991 case R_390_GOTPLTENT:
69fc87f1
MS		 992 case R_390_TLS_GD64:
993 case R_390_TLS_GOTIE12:
bd1ea41b 994 case R_390_TLS_GOTIE20:
69fc87f1
MS		 995 case R_390_TLS_GOTIE64:
996 case R_390_TLS_IEENT:
997 case R_390_TLS_IE64:
998 case R_390_TLS_LDM64:
5236c819
MS		 999 if (h == NULL
1000 && local_got_refcounts == NULL)
a85d7ed0 1001 {
470b557a 1002 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1003 return FALSE;
470b557a 1004 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1005 }
470b557a 1006
5236c819
MS		 1007 /* Fall through. */
1008 case R_390_GOTOFF16:
1009 case R_390_GOTOFF32:
1010 case R_390_GOTOFF64:
0451c93c
MS		 1011 case R_390_GOTPC:
1012 case R_390_GOTPCDBL:
f41345a7 1013 if (htab->elf.sgot == NULL)
0451c93c
MS		 1014 {
1015 if (htab->elf.dynobj == NULL)
1016 htab->elf.dynobj = abfd;
1017 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1018 return FALSE;
0451c93c 1019 }
5236c819
MS		 1020 }
1021
470b557a
AK		 1022 if (h != NULL)
1023 {
1024 if (htab->elf.dynobj == NULL)
1025 htab->elf.dynobj = abfd;
1026 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1027 return FALSE;
1028
1029 /* Make sure an IFUNC symbol defined in a non-shared object
1030 always gets a PLT slot. */
1031 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1032 {
1033 /* The symbol is called by the dynamic loader in order
1034 to resolve the relocation. So it is in fact also
1035 referenced. */
1036 h->ref_regular = 1;
1037 h->needs_plt = 1;
1038 }
1039 }
1040
69fc87f1 1041 switch (r_type)
5236c819 1042 {
5236c819
MS		 1043 case R_390_GOTPC:
1044 case R_390_GOTPCDBL:
470b557a
AK		 1045 /* These relocs do not need a GOT slot. They just load the
1046 GOT pointer itself or address something else relative to
1047 the GOT. Since the GOT pointer has been set up above we
1048 are done. */
0451c93c 1049 break;
d47b13e0
AK		 1050 case R_390_GOTOFF16:
1051 case R_390_GOTOFF32:
1052 case R_390_GOTOFF64:
1053 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1054 break;
ec338859 1055
fb798c50 1056 case R_390_PLT12DBL:
947216bf 1057 case R_390_PLT16DBL:
fb798c50 1058 case R_390_PLT24DBL:
a85d7ed0
NC		 1059 case R_390_PLT32:
1060 case R_390_PLT32DBL:
1061 case R_390_PLT64:
5236c819
MS		 1062 case R_390_PLTOFF16:
1063 case R_390_PLTOFF32:
1064 case R_390_PLTOFF64:
a85d7ed0 1065 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1066 actually build the entry in adjust_dynamic_symbol,
1067 because this might be a case of linking PIC code which is
1068 never referenced by a dynamic object, in which case we
1069 don't need to generate a procedure linkage table entry
1070 after all. */
ec338859 1071
a85d7ed0 1072 /* If this is a local symbol, we resolve it directly without
947216bf 1073 creating a procedure linkage table entry. */
5236c819
MS		 1074 if (h != NULL)
1075 {
f5385ebf 1076 h->needs_plt = 1;
5236c819
MS		 1077 h->plt.refcount += 1;
1078 }
1079 break;
ec338859 1080
5236c819
MS		 1081 case R_390_GOTPLT12:
1082 case R_390_GOTPLT16:
bd1ea41b 1083 case R_390_GOTPLT20:
5236c819
MS		 1084 case R_390_GOTPLT32:
1085 case R_390_GOTPLT64:
1086 case R_390_GOTPLTENT:
1087 /* This symbol requires either a procedure linkage table entry
1088 or an entry in the local got. We actually build the entry
1089 in adjust_dynamic_symbol because whether this is really a
1090 global reference can change and with it the fact if we have
1091 to create a plt entry or a local got entry. To be able to
1092 make a once global symbol a local one we have to keep track
1093 of the number of gotplt references that exist for this
1094 symbol. */
1095 if (h != NULL)
1096 {
1097 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1098 h->needs_plt = 1;
5236c819
MS		 1099 h->plt.refcount += 1;
1100 }
69fc87f1
MS		 1101 else
1102 local_got_refcounts[r_symndx] += 1;
1103 break;
1104
1105 case R_390_TLS_LDM64:
1106 htab->tls_ldm_got.refcount += 1;
1107 break;
1108
1109 case R_390_TLS_IE64:
1110 case R_390_TLS_GOTIE12:
bd1ea41b 1111 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1112 case R_390_TLS_GOTIE64:
1113 case R_390_TLS_IEENT:
0e1862bb 1114 if (bfd_link_pic (info))
69fc87f1
MS		 1115 info->flags |= DF_STATIC_TLS;
1116 /* Fall through */
1117
1118 case R_390_GOT12:
26e41594 1119 case R_390_GOT16:
bd1ea41b 1120 case R_390_GOT20:
69fc87f1
MS		 1121 case R_390_GOT32:
1122 case R_390_GOT64:
1123 case R_390_GOTENT:
1124 case R_390_TLS_GD64:
1125 /* This symbol requires a global offset table entry. */
1126 switch (r_type)
1127 {
1128 default:
1129 case R_390_GOT12:
1130 case R_390_GOT16:
bd1ea41b 1131 case R_390_GOT20:
69fc87f1
MS		 1132 case R_390_GOT32:
1133 case R_390_GOTENT:
1134 tls_type = GOT_NORMAL;
1135 break;
1136 case R_390_TLS_GD64:
1137 tls_type = GOT_TLS_GD;
1138 break;
1139 case R_390_TLS_IE64:
1140 case R_390_TLS_GOTIE64:
1141 tls_type = GOT_TLS_IE;
1142 break;
1143 case R_390_TLS_GOTIE12:
bd1ea41b 1144 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1145 case R_390_TLS_IEENT:
1146 tls_type = GOT_TLS_IE_NLT;
1147 break;
1148 }
1149
1150 if (h != NULL)
1151 {
1152 h->got.refcount += 1;
1153 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1154 }
5236c819
MS		 1155 else
1156 {
1157 local_got_refcounts[r_symndx] += 1;
69fc87f1 1158 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1159 }
69fc87f1
MS		 1160 /* If a TLS symbol is accessed using IE at least once,
1161 there is no point to use dynamic model for it. */
1162 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1163 {
1164 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1165 {
1166 (*_bfd_error_handler)
d003868e
AM		 1167 (_("%B: `%s' accessed both as normal and thread local symbol"),
1168 abfd, h->root.root.string);
69fc87f1
MS		 1169 return FALSE;
1170 }
1171 if (old_tls_type > tls_type)
1172 tls_type = old_tls_type;
1173 }
1174
1175 if (old_tls_type != tls_type)
1176 {
1177 if (h != NULL)
1178 elf_s390_hash_entry (h)->tls_type = tls_type;
1179 else
1180 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1181 }
1182
1183 if (r_type != R_390_TLS_IE64)
1184 break;
1185 /* Fall through */
1186
1187 case R_390_TLS_LE64:
e00d879a
AK		 1188 /* For static linking and executables this reloc will be
1189 calculated at linktime otherwise a TLS_TPOFF runtime
1190 reloc will be generated. */
0e1862bb 1191 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1192 break;
1193
0e1862bb 1194 if (!bfd_link_pic (info))
69fc87f1
MS		 1195 break;
1196 info->flags |= DF_STATIC_TLS;
1197 /* Fall through */
ec338859 1198
947216bf
AM		 1199 case R_390_8:
1200 case R_390_16:
a85d7ed0
NC		 1201 case R_390_32:
1202 case R_390_64:
fb798c50 1203 case R_390_PC12DBL:
947216bf
AM		 1204 case R_390_PC16:
1205 case R_390_PC16DBL:
fb798c50 1206 case R_390_PC24DBL:
a85d7ed0
NC		 1207 case R_390_PC32:
1208 case R_390_PC32DBL:
1209 case R_390_PC64:
99ba5125 1210 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1211 {
1212 /* If this reloc is in a read-only section, we might
1213 need a copy reloc. We can't check reliably at this
1214 stage whether the section is read-only, as input
1215 sections have not yet been mapped to output sections.
1216 Tentatively set the flag for now, and correct in
1217 adjust_dynamic_symbol. */
f5385ebf 1218 h->non_got_ref = 1;
ec338859 1219
0e1862bb 1220 if (!bfd_link_pic (info))
470b557a
AK		 1221 {
1222 /* We may need a .plt entry if the function this reloc
1223 refers to is in a shared lib. */
1224 h->plt.refcount += 1;
1225 }
0451c93c 1226 }
ec338859 1227
a85d7ed0 1228 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1229 against a global symbol, or a non PC relative reloc
1230 against a local symbol, then we need to copy the reloc
1231 into the shared library. However, if we are linking with
1232 -Bsymbolic, we do not need to copy a reloc against a
1233 global symbol which is defined in an object we are
1234 including in the link (i.e., DEF_REGULAR is set). At
1235 this point we have not seen all the input files, so it is
1236 possible that DEF_REGULAR is not set now but will be set
1237 later (it is never cleared). In case of a weak definition,
1238 DEF_REGULAR may be cleared later by a strong definition in
1239 a shared library. We account for that possibility below by
1240 storing information in the relocs_copied field of the hash
1241 table entry. A similar situation occurs when creating
1242 shared libraries and symbol visibility changes render the
1243 symbol local.
1244
1245 If on the other hand, we are creating an executable, we
1246 may need to keep relocations for symbols satisfied by a
1247 dynamic library if we manage to avoid copy relocs for the
1248 symbol. */
0e1862bb 1249 if ((bfd_link_pic (info)
0451c93c
MS		 1250 && (sec->flags & SEC_ALLOC) != 0
1251 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1252 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1253 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1254 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1255 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1256 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1257 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1258 || (h != NULL
8c21ca21 1259 && (! SYMBOLIC_BIND (info, h)
0451c93c 1260 || h->root.type == bfd_link_hash_defweak
f5385ebf 1261 || !h->def_regular))))
64285810 1262 || (ELIMINATE_COPY_RELOCS
0e1862bb 1263 && !bfd_link_pic (info)
0451c93c
MS		 1264 && (sec->flags & SEC_ALLOC) != 0
1265 && h != NULL
1266 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1267 || !h->def_regular)))
a85d7ed0 1268 {
00d8c7a9
AK		 1269 struct elf_dyn_relocs *p;
1270 struct elf_dyn_relocs **head;
ec338859 1271
0451c93c
MS		 1272 /* We must copy these reloc types into the output file.
1273 Create a reloc section in dynobj and make room for
1274 this reloc. */
a85d7ed0
NC		 1275 if (sreloc == NULL)
1276 {
440e9cd2
AK		 1277 if (htab->elf.dynobj == NULL)
1278 htab->elf.dynobj = abfd;
1279
83bac4b0
NC		 1280 sreloc = _bfd_elf_make_dynamic_reloc_section
1281 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1282
a85d7ed0 1283 if (sreloc == NULL)
83bac4b0 1284 return FALSE;
a85d7ed0 1285 }
ec338859 1286
0451c93c
MS		 1287 /* If this is a global symbol, we count the number of
1288 relocations we need for this symbol. */
1289 if (h != NULL)
a85d7ed0 1290 {
ec338859 1291 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1292 }
1293 else
1294 {
ec338859
AM		 1295 /* Track dynamic relocs needed for local syms too.
1296 We really need local syms available to do this
1297 easily. Oh well. */
ec338859 1298 asection *s;
6edfbbad
DJ		 1299 void *vpp;
1300
87d72d41
AM		 1301 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1302 abfd, r_symndx);
1303 if (isym == NULL)
b34976b6 1304 return FALSE;
ec338859 1305
87d72d41
AM		 1306 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1307 if (s == NULL)
1308 s = sec;
1309
6edfbbad 1310 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1311 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1312 }
1313
1314 p = *head;
1315 if (p == NULL || p->sec != sec)
1316 {
1317 bfd_size_type amt = sizeof *p;
00d8c7a9 1318 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1319 bfd_alloc (htab->elf.dynobj, amt));
1320 if (p == NULL)
b34976b6 1321 return FALSE;
ec338859
AM		 1322 p->next = *head;
1323 *head = p;
1324 p->sec = sec;
1325 p->count = 0;
1326 p->pc_count = 0;
a85d7ed0 1327 }
ec338859
AM		 1328
1329 p->count += 1;
1330 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1331 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1332 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1333 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1334 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1335 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1336 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1337 p->pc_count += 1;
a85d7ed0 1338 }
a85d7ed0 1339 break;
ec338859 1340
a85d7ed0
NC		 1341 /* This relocation describes the C++ object vtable hierarchy.
1342 Reconstruct it for later use during GC. */
947216bf 1343 case R_390_GNU_VTINHERIT:
c152c796 1344 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1345 return FALSE;
947216bf 1346 break;
ec338859 1347
a85d7ed0
NC		 1348 /* This relocation describes which C++ vtable entries are actually
1349 used. Record for later use during GC. */
947216bf 1350 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1351 BFD_ASSERT (h != NULL);
1352 if (h != NULL
1353 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1354 return FALSE;
947216bf 1355 break;
ec338859 1356
a85d7ed0
NC		 1357 default:
1358 break;
1359 }
1360 }
1361
b34976b6 1362 return TRUE;
a85d7ed0
NC		 1363}
1364
1365/* Return the section that should be marked against GC for a given
1366 relocation. */
1367
1368static asection *
07adf181
AM		 1369elf_s390_gc_mark_hook (asection *sec,
1370 struct bfd_link_info *info,
1371 Elf_Internal_Rela *rel,
1372 struct elf_link_hash_entry *h,
1373 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1374{
1375 if (h != NULL)
07adf181
AM		 1376 switch (ELF64_R_TYPE (rel->r_info))
1377 {
1378 case R_390_GNU_VTINHERIT:
1379 case R_390_GNU_VTENTRY:
1380 return NULL;
1381 }
1382
1383 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1384}
1385
1386/* Update the got entry reference counts for the section being removed. */
1387
b34976b6 1388static bfd_boolean
07adf181
AM		 1389elf_s390_gc_sweep_hook (bfd *abfd,
1390 struct bfd_link_info *info,
1391 asection *sec,
1392 const Elf_Internal_Rela *relocs)
a85d7ed0 1393{
4dfe6ac6 1394 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1395 Elf_Internal_Shdr *symtab_hdr;
1396 struct elf_link_hash_entry **sym_hashes;
1397 bfd_signed_vma *local_got_refcounts;
1398 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1399
0e1862bb 1400 if (bfd_link_relocatable (info))
7dda2462
TG		 1401 return TRUE;
1402
4dfe6ac6
NC		 1403 htab = elf_s390_hash_table (info);
1404 if (htab == NULL)
1405 return FALSE;
1406
ec338859 1407 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1408
0ffa91dd 1409 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1410 sym_hashes = elf_sym_hashes (abfd);
1411 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1412
1413 relend = relocs + sec->reloc_count;
1414 for (rel = relocs; rel < relend; rel++)
5236c819 1415 {
26e41594
AM		 1416 unsigned long r_symndx;
1417 unsigned int r_type;
1418 struct elf_link_hash_entry *h = NULL;
1419
5236c819 1420 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1421 if (r_symndx >= symtab_hdr->sh_info)
1422 {
1423 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1424 struct elf_dyn_relocs **pp;
1425 struct elf_dyn_relocs *p;
5236c819 1426
26e41594 1427 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1428 while (h->root.type == bfd_link_hash_indirect
1429 || h->root.type == bfd_link_hash_warning)
1430 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1431 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1432
26e41594
AM		 1433 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1434 if (p->sec == sec)
1435 {
1436 /* Everything must go for SEC. */
1437 *pp = p->next;
1438 break;
1439 }
1440 }
470b557a
AK		 1441 else
1442 {
1443 Elf_Internal_Sym *isym;
1444
1445 /* A local symbol. */
1446 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1447 abfd, r_symndx);
1448 if (isym == NULL)
1449 return FALSE;
1450
1451 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1452 {
1453 struct plt_entry *plt = elf_s390_local_plt (abfd);
1454 if (plt[r_symndx].plt.refcount > 0)
1455 plt[r_symndx].plt.refcount--;
1456 }
1457 }
26e41594
AM		 1458
1459 r_type = ELF64_R_TYPE (rel->r_info);
1460 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1461 switch (r_type)
5236c819 1462 {
69fc87f1 1463 case R_390_TLS_LDM64:
4dfe6ac6
NC		 1464 if (htab->tls_ldm_got.refcount > 0)
1465 htab->tls_ldm_got.refcount -= 1;
69fc87f1 1466 break;
ef05be83
AK		 1467 case R_390_GOTOFF16:
1468 case R_390_GOTOFF32:
1469 case R_390_GOTOFF64:
d47b13e0
AK		 1470 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1471 {
1472 h->plt.refcount--;
1473 break;
1474 }
1475
ef05be83
AK		 1476 case R_390_GOTPC:
1477 case R_390_GOTPCDBL:
1478 break;
69fc87f1
MS		 1479
1480 case R_390_TLS_GD64:
1481 case R_390_TLS_IE64:
1482 case R_390_TLS_GOTIE12:
bd1ea41b 1483 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1484 case R_390_TLS_GOTIE64:
1485 case R_390_TLS_IEENT:
5236c819
MS		 1486 case R_390_GOT12:
1487 case R_390_GOT16:
bd1ea41b 1488 case R_390_GOT20:
5236c819
MS		 1489 case R_390_GOT32:
1490 case R_390_GOT64:
5236c819
MS		 1491 case R_390_GOTENT:
1492 if (h != NULL)
1493 {
1494 if (h->got.refcount > 0)
1495 h->got.refcount -= 1;
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 }
26e41594 1502 break;
a85d7ed0 1503
5236c819
MS		 1504 case R_390_8:
1505 case R_390_12:
1506 case R_390_16:
bd1ea41b 1507 case R_390_20:
5236c819
MS		 1508 case R_390_32:
1509 case R_390_64:
1510 case R_390_PC16:
fb798c50 1511 case R_390_PC12DBL:
5236c819 1512 case R_390_PC16DBL:
fb798c50 1513 case R_390_PC24DBL:
5236c819
MS		 1514 case R_390_PC32:
1515 case R_390_PC32DBL:
1516 case R_390_PC64:
0e1862bb 1517 if (bfd_link_pic (info))
26e41594
AM		 1518 break;
1519 /* Fall through */
a85d7ed0 1520
fb798c50 1521 case R_390_PLT12DBL:
69fc87f1 1522 case R_390_PLT16DBL:
fb798c50 1523 case R_390_PLT24DBL:
69fc87f1
MS		 1524 case R_390_PLT32:
1525 case R_390_PLT32DBL:
1526 case R_390_PLT64:
1527 case R_390_PLTOFF16:
1528 case R_390_PLTOFF32:
1529 case R_390_PLTOFF64:
1530 if (h != NULL)
1531 {
1532 if (h->plt.refcount > 0)
1533 h->plt.refcount -= 1;
1534 }
1535 break;
1536
1537 case R_390_GOTPLT12:
1538 case R_390_GOTPLT16:
bd1ea41b 1539 case R_390_GOTPLT20:
69fc87f1
MS		 1540 case R_390_GOTPLT32:
1541 case R_390_GOTPLT64:
1542 case R_390_GOTPLTENT:
1543 if (h != NULL)
1544 {
1545 if (h->plt.refcount > 0)
1546 {
1547 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1548 h->plt.refcount -= 1;
1549 }
1550 }
1551 else if (local_got_refcounts != NULL)
1552 {
1553 if (local_got_refcounts[r_symndx] > 0)
1554 local_got_refcounts[r_symndx] -= 1;
1555 }
1556 break;
1557
5236c819
MS		 1558 default:
1559 break;
1560 }
1561 }
a85d7ed0 1562
b34976b6 1563 return TRUE;
a85d7ed0
NC		 1564}
1565
5236c819
MS		 1566/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1567 entry but we found we will not create any. Called when we find we will
1568 not have any PLT for this symbol, by for example
1569 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1570 or elf_s390_size_dynamic_sections if no dynamic sections will be
1571 created (we're only linking static objects). */
1572
1573static void
2c3fc389 1574elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1575{
1576 if (h->elf.root.type == bfd_link_hash_warning)
1577 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1578
1579 if (h->gotplt_refcount <= 0)
1580 return;
1581
1582 /* We simply add the number of gotplt references to the number
1583 * of got references for this symbol. */
1584 h->elf.got.refcount += h->gotplt_refcount;
1585 h->gotplt_refcount = -1;
1586}
1587
a85d7ed0
NC		 1588/* Adjust a symbol defined by a dynamic object and referenced by a
1589 regular object. The current definition is in some section of the
1590 dynamic object, but we're not including those sections. We have to
1591 change the definition to something the rest of the link can
1592 understand. */
1593
b34976b6 1594static bfd_boolean
4dfe6ac6
NC		 1595elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1596 struct elf_link_hash_entry *h)
a85d7ed0 1597{
0451c93c 1598 struct elf_s390_link_hash_table *htab;
a85d7ed0 1599 asection *s;
a85d7ed0 1600
470b557a
AK		 1601 /* STT_GNU_IFUNC symbol must go through PLT. */
1602 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1603 {
1604 /* All local STT_GNU_IFUNC references must be treated as local
1605 calls via local PLT. */
1606 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1607 {
1608 bfd_size_type pc_count = 0, count = 0;
1609 struct elf_dyn_relocs **pp;
1610 struct elf_s390_link_hash_entry *eh;
1611 struct elf_dyn_relocs *p;
1612
1613 eh = (struct elf_s390_link_hash_entry *) h;
1614 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1615 {
1616 pc_count += p->pc_count;
1617 p->count -= p->pc_count;
1618 p->pc_count = 0;
1619 count += p->count;
1620 if (p->count == 0)
1621 *pp = p->next;
1622 else
1623 pp = &p->next;
1624 }
1625
1626 if (pc_count || count)
1627 {
1628 h->needs_plt = 1;
1629 h->non_got_ref = 1;
1630 if (h->plt.refcount <= 0)
1631 h->plt.refcount = 1;
1632 else
1633 h->plt.refcount += 1;
1634 }
1635 }
1636
1637 if (h->plt.refcount <= 0)
1638 {
1639 h->plt.offset = (bfd_vma) -1;
1640 h->needs_plt = 0;
1641 }
1642 return TRUE;
1643 }
470b557a 1644
a85d7ed0
NC		 1645 /* If this is a function, put it in the procedure linkage table. We
1646 will fill in the contents of the procedure linkage table later
cedb70c5 1647 (although we could actually do it here). */
a85d7ed0 1648 if (h->type == STT_FUNC
f5385ebf 1649 || h->needs_plt)
a85d7ed0 1650 {
0451c93c 1651 if (h->plt.refcount <= 0
8c21ca21
AK		 1652 || SYMBOL_CALLS_LOCAL (info, h)
1653 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1654 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1655 {
1656 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1657 file, but the symbol was never referred to by a dynamic
1658 object, or if all references were garbage collected. In
0451c93c
MS		 1659 such a case, we don't actually need to build a procedure
1660 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1661 h->plt.offset = (bfd_vma) -1;
f5385ebf 1662 h->needs_plt = 0;
5236c819 1663 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1664 }
1665
b34976b6 1666 return TRUE;
a85d7ed0 1667 }
bbd7ec4a 1668 else
0451c93c
MS		 1669 /* It's possible that we incorrectly decided a .plt reloc was
1670 needed for an R_390_PC32 reloc to a non-function sym in
1671 check_relocs. We can't decide accurately between function and
1672 non-function syms in check-relocs; Objects loaded later in
1673 the link may change h->type. So fix it now. */
bbd7ec4a 1674 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1675
1676 /* If this is a weak symbol, and there is a real definition, the
1677 processor independent code will have arranged for us to see the
1678 real definition first, and we can just use the same value. */
f6e332e6 1679 if (h->u.weakdef != NULL)
a85d7ed0 1680 {
f6e332e6
AM		 1681 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1682 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1683 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1684 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1685 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1686 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1687 return TRUE;
a85d7ed0
NC		 1688 }
1689
1690 /* This is a reference to a symbol defined by a dynamic object which
1691 is not a function. */
1692
1693 /* If we are creating a shared library, we must presume that the
1694 only references to the symbol are via the global offset table.
1695 For such cases we need not do anything here; the relocations will
1696 be handled correctly by relocate_section. */
0e1862bb 1697 if (bfd_link_pic (info))
b34976b6 1698 return TRUE;
a85d7ed0
NC		 1699
1700 /* If there are no references to this symbol that do not use the
1701 GOT, we don't need to generate a copy reloc. */
f5385ebf 1702 if (!h->non_got_ref)
b34976b6 1703 return TRUE;
a85d7ed0 1704
0451c93c
MS		 1705 /* If -z nocopyreloc was given, we won't generate them either. */
1706 if (info->nocopyreloc)
1707 {
f5385ebf 1708 h->non_got_ref = 0;
b34976b6 1709 return TRUE;
0451c93c
MS		 1710 }
1711
64285810 1712 if (ELIMINATE_COPY_RELOCS)
0451c93c 1713 {
64285810 1714 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1715 struct elf_dyn_relocs *p;
0451c93c 1716
64285810
MS		 1717 eh = (struct elf_s390_link_hash_entry *) h;
1718 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1719 {
1720 s = p->sec->output_section;
1721 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1722 break;
1723 }
1724
1725 /* If we didn't find any dynamic relocs in read-only sections, then
1726 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1727 if (p == NULL)
1728 {
f5385ebf 1729 h->non_got_ref = 0;
64285810
MS		 1730 return TRUE;
1731 }
0451c93c
MS		 1732 }
1733
a85d7ed0
NC		 1734 /* We must allocate the symbol in our .dynbss section, which will
1735 become part of the .bss section of the executable. There will be
1736 an entry for this symbol in the .dynsym section. The dynamic
1737 object will contain position independent code, so all references
1738 from the dynamic object to this symbol will go through the global
1739 offset table. The dynamic linker will use the .dynsym entry to
1740 determine the address it must put in the global offset table, so
1741 both the dynamic object and the regular object will refer to the
1742 same memory location for the variable. */
1743
0451c93c 1744 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1745 if (htab == NULL)
1746 return FALSE;
a85d7ed0 1747
0451c93c
MS		 1748 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1749 copy the initial value out of the dynamic object and into the
1750 runtime process image. */
1d7e9d18 1751 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1752 {
eea6121a 1753 htab->srelbss->size += sizeof (Elf64_External_Rela);
f5385ebf 1754 h->needs_copy = 1;
a85d7ed0
NC		 1755 }
1756
0451c93c 1757 s = htab->sdynbss;
a85d7ed0 1758
6cabe1ea 1759 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1760}
1761
0451c93c
MS		 1762/* Allocate space in .plt, .got and associated reloc sections for
1763 dynamic relocs. */
1764
b34976b6 1765static bfd_boolean
4dfe6ac6
NC		 1766allocate_dynrelocs (struct elf_link_hash_entry *h,
1767 void * inf)
0451c93c
MS		 1768{
1769 struct bfd_link_info *info;
1770 struct elf_s390_link_hash_table *htab;
470b557a 1771 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1772 struct elf_dyn_relocs *p;
0451c93c 1773
e92d460e 1774 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1775 return TRUE;
0451c93c
MS		 1776
1777 info = (struct bfd_link_info *) inf;
1778 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1779 if (htab == NULL)
1780 return FALSE;
0451c93c 1781
470b557a
AK		 1782 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1783 here if it is defined and referenced in a non-shared object. */
1784 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1785 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1786 else if (htab->elf.dynamic_sections_created
1787 && h->plt.refcount > 0)
0451c93c
MS		 1788 {
1789 /* Make sure this symbol is output as a dynamic symbol.
1790 Undefined weak syms won't yet be marked as dynamic. */
1791 if (h->dynindx == -1
f5385ebf 1792 && !h->forced_local)
0451c93c 1793 {
c152c796 1794 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1795 return FALSE;
0451c93c
MS		 1796 }
1797
0e1862bb 1798 if (bfd_link_pic (info)
4ec72bde 1799 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1800 {
f41345a7 1801 asection *s = htab->elf.splt;
0451c93c
MS		 1802
1803 /* If this is the first .plt entry, make room for the special
1804 first entry. */
eea6121a
AM		 1805 if (s->size == 0)
1806 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1807
eea6121a 1808 h->plt.offset = s->size;
0451c93c
MS		 1809
1810 /* If this symbol is not defined in a regular file, and we are
1811 not generating a shared library, then set the symbol to this
1812 location in the .plt. This is required to make function
1813 pointers compare as equal between the normal executable and
1814 the shared library. */
0e1862bb 1815 if (! bfd_link_pic (info)
f5385ebf 1816 && !h->def_regular)
0451c93c
MS		 1817 {
1818 h->root.u.def.section = s;
1819 h->root.u.def.value = h->plt.offset;
1820 }
ec338859 1821
0451c93c 1822 /* Make room for this entry. */
eea6121a 1823 s->size += PLT_ENTRY_SIZE;
ec338859 1824
0451c93c
MS		 1825 /* We also need to make an entry in the .got.plt section, which
1826 will be placed in the .got section by the linker script. */
f41345a7 1827 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1828
1829 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1830 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1831 }
1832 else
1833 {
1834 h->plt.offset = (bfd_vma) -1;
f5385ebf 1835 h->needs_plt = 0;
5236c819 1836 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1837 }
1838 }
1839 else
1840 {
1841 h->plt.offset = (bfd_vma) -1;
f5385ebf 1842 h->needs_plt = 0;
5236c819 1843 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1844 }
1845
69fc87f1
MS		 1846 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1847 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1848 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1849 we can save the dynamic TLS relocation. */
1850 if (h->got.refcount > 0
0e1862bb 1851 && !bfd_link_pic (info)
69fc87f1
MS		 1852 && h->dynindx == -1
1853 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1854 {
1855 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1856 /* For the GOTIE access without a literal pool entry the offset has
1857 to be stored somewhere. The immediate value in the instruction
1858 is not bit enough so the value is stored in the got. */
1859 {
f41345a7
AK		 1860 h->got.offset = htab->elf.sgot->size;
1861 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1862 }
1863 else
1864 h->got.offset = (bfd_vma) -1;
1865 }
1866 else if (h->got.refcount > 0)
0451c93c
MS		 1867 {
1868 asection *s;
b34976b6 1869 bfd_boolean dyn;
69fc87f1 1870 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1871
1872 /* Make sure this symbol is output as a dynamic symbol.
1873 Undefined weak syms won't yet be marked as dynamic. */
1874 if (h->dynindx == -1
f5385ebf 1875 && !h->forced_local)
0451c93c 1876 {
c152c796 1877 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1878 return FALSE;
0451c93c
MS		 1879 }
1880
f41345a7 1881 s = htab->elf.sgot;
eea6121a
AM		 1882 h->got.offset = s->size;
1883 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1884 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1885 if (tls_type == GOT_TLS_GD)
eea6121a 1886 s->size += GOT_ENTRY_SIZE;
0451c93c 1887 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1888 /* R_390_TLS_IE64 needs one dynamic relocation,
1889 R_390_TLS_GD64 needs one if local symbol and two if global. */
1890 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1891 || tls_type >= GOT_TLS_IE)
f41345a7 1892 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1893 else if (tls_type == GOT_TLS_GD)
f41345a7 1894 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1895 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1896 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1897 && (bfd_link_pic (info)
82058a73 1898 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1899 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1900 }
1901 else
1902 h->got.offset = (bfd_vma) -1;
1903
0451c93c 1904 if (eh->dyn_relocs == NULL)
b34976b6 1905 return TRUE;
0451c93c
MS		 1906
1907 /* In the shared -Bsymbolic case, discard space allocated for
1908 dynamic pc-relative relocs against symbols which turn out to be
1909 defined in regular objects. For the normal shared case, discard
1910 space for pc-relative relocs that have become local due to symbol
1911 visibility changes. */
1912
0e1862bb 1913 if (bfd_link_pic (info))
0451c93c 1914 {
8c21ca21 1915 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1916 {
00d8c7a9 1917 struct elf_dyn_relocs **pp;
0451c93c
MS		 1918
1919 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1920 {
1921 p->count -= p->pc_count;
1922 p->pc_count = 0;
1923 if (p->count == 0)
1924 *pp = p->next;
1925 else
1926 pp = &p->next;
1927 }
1928 }
82058a73
MS		 1929
1930 /* Also discard relocs on undefined weak syms with non-default
1931 visibility. */
22d606e9 1932 if (eh->dyn_relocs != NULL
82058a73 1933 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1934 {
1935 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1936 eh->dyn_relocs = NULL;
1937
1938 /* Make sure undefined weak symbols are output as a dynamic
1939 symbol in PIEs. */
1940 else if (h->dynindx == -1
1941 && !h->forced_local)
1942 {
1943 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1944 return FALSE;
1945 }
1946 }
0451c93c 1947 }
64285810 1948 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1949 {
1950 /* For the non-shared case, discard space for relocs against
1951 symbols which turn out to need copy relocs or are not
1952 dynamic. */
1953
f5385ebf
AM		 1954 if (!h->non_got_ref
1955 && ((h->def_dynamic
1956 && !h->def_regular)
0451c93c
MS		 1957 || (htab->elf.dynamic_sections_created
1958 && (h->root.type == bfd_link_hash_undefweak
1959 || h->root.type == bfd_link_hash_undefined))))
1960 {
1961 /* Make sure this symbol is output as a dynamic symbol.
1962 Undefined weak syms won't yet be marked as dynamic. */
1963 if (h->dynindx == -1
f5385ebf 1964 && !h->forced_local)
0451c93c 1965 {
c152c796 1966 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1967 return FALSE;
0451c93c
MS		 1968 }
1969
1970 /* If that succeeded, we know we'll be keeping all the
1971 relocs. */
1972 if (h->dynindx != -1)
1973 goto keep;
1974 }
1975
1976 eh->dyn_relocs = NULL;
1977
ec338859 1978 keep: ;
0451c93c
MS		 1979 }
1980
1981 /* Finally, allocate space. */
1982 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1983 {
1984 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1985 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1986 }
1987
b34976b6 1988 return TRUE;
0451c93c
MS		 1989}
1990
1991/* Find any dynamic relocs that apply to read-only sections. */
1992
b34976b6 1993static bfd_boolean
2c3fc389 1994readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1995{
1996 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1997 struct elf_dyn_relocs *p;
0451c93c
MS		 1998
1999 eh = (struct elf_s390_link_hash_entry *) h;
2000 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2001 {
2002 asection *s = p->sec->output_section;
2003
2004 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2005 {
2006 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2007
2008 info->flags |= DF_TEXTREL;
2009
2010 /* Not an error, just cut short the traversal. */
b34976b6 2011 return FALSE;
0451c93c
MS		 2012 }
2013 }
b34976b6 2014 return TRUE;
0451c93c
MS		 2015}
2016
a85d7ed0
NC		 2017/* Set the sizes of the dynamic sections. */
2018
b34976b6 2019static bfd_boolean
4dfe6ac6
NC		 2020elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2021 struct bfd_link_info *info)
a85d7ed0 2022{
0451c93c 2023 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2024 bfd *dynobj;
2025 asection *s;
b34976b6 2026 bfd_boolean relocs;
0451c93c 2027 bfd *ibfd;
a85d7ed0 2028
0451c93c 2029 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2030 if (htab == NULL)
2031 return FALSE;
2032
0451c93c
MS		 2033 dynobj = htab->elf.dynobj;
2034 if (dynobj == NULL)
2035 abort ();
a85d7ed0 2036
0451c93c 2037 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2038 {
2039 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 2040 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 2041 {
3d4d4302 2042 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2043 if (s == NULL)
2044 abort ();
eea6121a 2045 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2046 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2047 }
2048 }
a85d7ed0 2049
0451c93c
MS		 2050 /* Set up .got offsets for local syms, and space for local dynamic
2051 relocs. */
c72f2fb2 2052 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2053 {
0451c93c
MS		 2054 bfd_signed_vma *local_got;
2055 bfd_signed_vma *end_local_got;
69fc87f1 2056 char *local_tls_type;
0451c93c
MS		 2057 bfd_size_type locsymcount;
2058 Elf_Internal_Shdr *symtab_hdr;
2059 asection *srela;
470b557a
AK		 2060 struct plt_entry *local_plt;
2061 unsigned int i;
a85d7ed0 2062
0ffa91dd 2063 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2064 continue;
2065
0451c93c 2066 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2067 {
00d8c7a9 2068 struct elf_dyn_relocs *p;
0451c93c 2069
6edfbbad 2070 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2071 {
ec338859
AM		 2072 if (!bfd_is_abs_section (p->sec)
2073 && bfd_is_abs_section (p->sec->output_section))
2074 {
2075 /* Input section has been discarded, either because
2076 it is a copy of a linkonce section or due to
2077 linker script /DISCARD/, so we'll be discarding
2078 the relocs too. */
2079 }
248866a8 2080 else if (p->count != 0)
ec338859
AM		 2081 {
2082 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2083 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 2084 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2085 info->flags |= DF_TEXTREL;
ec338859 2086 }
a85d7ed0
NC		 2087 }
2088 }
0451c93c
MS		 2089
2090 local_got = elf_local_got_refcounts (ibfd);
2091 if (!local_got)
2092 continue;
2093
0ffa91dd 2094 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2095 locsymcount = symtab_hdr->sh_info;
2096 end_local_got = local_got + locsymcount;
69fc87f1 2097 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2098 s = htab->elf.sgot;
2099 srela = htab->elf.srelgot;
69fc87f1 2100 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2101 {
0451c93c 2102 if (*local_got > 0)
a85d7ed0 2103 {
eea6121a
AM		 2104 *local_got = s->size;
2105 s->size += GOT_ENTRY_SIZE;
69fc87f1 2106 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2107 s->size += GOT_ENTRY_SIZE;
0e1862bb 2108 if (bfd_link_pic (info))
eea6121a 2109 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2110 }
2111 else
0451c93c 2112 *local_got = (bfd_vma) -1;
a85d7ed0 2113 }
470b557a
AK		 2114
2115 local_plt = elf_s390_local_plt (ibfd);
2116 for (i = 0; i < symtab_hdr->sh_info; i++)
2117 {
2118 if (local_plt[i].plt.refcount > 0)
2119 {
2120 local_plt[i].plt.offset = htab->elf.iplt->size;
2121 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2122 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2123 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2124 }
2125 else
2126 local_plt[i].plt.offset = (bfd_vma) -1;
2127 }
0451c93c
MS		 2128 }
2129
69fc87f1
MS		 2130 if (htab->tls_ldm_got.refcount > 0)
2131 {
2132 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2133 relocs. */
f41345a7
AK		 2134 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2135 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2136 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2137 }
2138 else
2139 htab->tls_ldm_got.offset = -1;
2140
0451c93c
MS		 2141 /* Allocate global sym .plt and .got entries, and space for global
2142 sym dynamic relocs. */
2c3fc389 2143 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2144
2145 /* We now have determined the sizes of the various dynamic sections.
2146 Allocate memory for them. */
b34976b6 2147 relocs = FALSE;
0451c93c
MS		 2148 for (s = dynobj->sections; s != NULL; s = s->next)
2149 {
2150 if ((s->flags & SEC_LINKER_CREATED) == 0)
2151 continue;
2152
f41345a7
AK		 2153 if (s == htab->elf.splt
2154 || s == htab->elf.sgot
2155 || s == htab->elf.sgotplt
470b557a
AK		 2156 || s == htab->sdynbss
2157 || s == htab->elf.iplt
2158 || s == htab->elf.igotplt
2159 || s == htab->irelifunc)
0451c93c
MS		 2160 {
2161 /* Strip this section if we don't need it; see the
2162 comment below. */
2163 }
0112cd26 2164 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2165 {
f41345a7 2166 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2167 relocs = TRUE;
ec338859 2168
0451c93c
MS		 2169 /* We use the reloc_count field as a counter if we need
2170 to copy relocs into the output file. */
2171 s->reloc_count = 0;
2172 }
2173 else
a85d7ed0
NC		 2174 {
2175 /* It's not one of our sections, so don't allocate space. */
2176 continue;
2177 }
2178
eea6121a 2179 if (s->size == 0)
a85d7ed0 2180 {
0451c93c
MS		 2181 /* If we don't need this section, strip it from the
2182 output file. This is to handle .rela.bss and
2183 .rela.plt. We must create it in
2184 create_dynamic_sections, because it must be created
2185 before the linker maps input sections to output
2186 sections. The linker does that before
2187 adjust_dynamic_symbol is called, and it is that
2188 function which decides whether anything needs to go
2189 into these sections. */
2190
8423293d 2191 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2192 continue;
2193 }
2194
c456f082
AM		 2195 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2196 continue;
2197
0451c93c
MS		 2198 /* Allocate memory for the section contents. We use bfd_zalloc
2199 here in case unused entries are not reclaimed before the
2200 section's contents are written out. This should not happen,
2201 but this way if it does, we get a R_390_NONE reloc instead
2202 of garbage. */
eea6121a 2203 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2204 if (s->contents == NULL)
b34976b6 2205 return FALSE;
a85d7ed0
NC		 2206 }
2207
0451c93c 2208 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2209 {
2210 /* Add some entries to the .dynamic section. We fill in the
2211 values later, in elf_s390_finish_dynamic_sections, but we
2212 must add the entries now so that we get the correct size for
2213 the .dynamic section. The DT_DEBUG entry is filled in by the
2214 dynamic linker and used by the debugger. */
dc810e39 2215#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2216 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2217
0e1862bb 2218 if (bfd_link_executable (info))
a85d7ed0 2219 {
dc810e39 2220 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2221 return FALSE;
a85d7ed0
NC		 2222 }
2223
f41345a7 2224 if (htab->elf.splt->size != 0)
a85d7ed0 2225 {
dc810e39
AM		 2226 if (!add_dynamic_entry (DT_PLTGOT, 0)
2227 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2228 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2229 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2230 return FALSE;
a85d7ed0
NC		 2231 }
2232
2233 if (relocs)
947216bf
AM		 2234 {
2235 if (!add_dynamic_entry (DT_RELA, 0)
2236 || !add_dynamic_entry (DT_RELASZ, 0)
2237 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2238 return FALSE;
ec338859 2239
0451c93c
MS		 2240 /* If any dynamic relocs apply to a read-only section,
2241 then we need a DT_TEXTREL entry. */
248866a8
AM		 2242 if ((info->flags & DF_TEXTREL) == 0)
2243 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2244 info);
ec338859 2245
0451c93c
MS		 2246 if ((info->flags & DF_TEXTREL) != 0)
2247 {
2248 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2249 return FALSE;
0451c93c 2250 }
a85d7ed0
NC		 2251 }
2252 }
dc810e39 2253#undef add_dynamic_entry
a85d7ed0 2254
b34976b6 2255 return TRUE;
a85d7ed0
NC		 2256}
2257
69fc87f1
MS		 2258/* Return the base VMA address which should be subtracted from real addresses
2259 when resolving @dtpoff relocation.
2260 This is PT_TLS segment p_vaddr. */
2261
2262static bfd_vma
2c3fc389 2263dtpoff_base (struct bfd_link_info *info)
69fc87f1 2264{
e1918d23
AM		 2265 /* If tls_sec is NULL, we should have signalled an error already. */
2266 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2267 return 0;
e1918d23 2268 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2269}
2270
2271/* Return the relocation value for @tpoff relocation
2272 if STT_TLS virtual address is ADDRESS. */
2273
2274static bfd_vma
2c3fc389 2275tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2276{
e1918d23 2277 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2278
e1918d23
AM		 2279 /* If tls_sec is NULL, we should have signalled an error already. */
2280 if (htab->tls_sec == NULL)
69fc87f1 2281 return 0;
e1918d23 2282 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2283}
2284
2285/* Complain if TLS instruction relocation is against an invalid
2286 instruction. */
2287
2288static void
2c3fc389
NC		 2289invalid_tls_insn (bfd *input_bfd,
2290 asection *input_section,
2291 Elf_Internal_Rela *rel)
69fc87f1
MS		 2292{
2293 reloc_howto_type *howto;
2294
2295 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2296 (*_bfd_error_handler)
d003868e
AM		 2297 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2298 input_bfd,
2299 input_section,
69fc87f1
MS		 2300 (long) rel->r_offset,
2301 howto->name);
77df2968 2302 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2303}
2304
a85d7ed0
NC		 2305/* Relocate a 390 ELF section. */
2306
b34976b6 2307static bfd_boolean
4dfe6ac6
NC		 2308elf_s390_relocate_section (bfd *output_bfd,
2309 struct bfd_link_info *info,
2310 bfd *input_bfd,
2311 asection *input_section,
2312 bfd_byte *contents,
2313 Elf_Internal_Rela *relocs,
2314 Elf_Internal_Sym *local_syms,
2315 asection **local_sections)
a85d7ed0 2316{
0451c93c 2317 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2318 Elf_Internal_Shdr *symtab_hdr;
2319 struct elf_link_hash_entry **sym_hashes;
2320 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2321 Elf_Internal_Rela *rel;
2322 Elf_Internal_Rela *relend;
2323
0ffa91dd
NC		 2324 BFD_ASSERT (is_s390_elf (input_bfd));
2325
0451c93c 2326 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2327 if (htab == NULL)
2328 return FALSE;
2329
0ffa91dd 2330 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2331 sym_hashes = elf_sym_hashes (input_bfd);
2332 local_got_offsets = elf_local_got_offsets (input_bfd);
2333
a85d7ed0
NC		 2334 rel = relocs;
2335 relend = relocs + input_section->reloc_count;
2336 for (; rel < relend; rel++)
2337 {
5236c819 2338 unsigned int r_type;
a85d7ed0
NC		 2339 reloc_howto_type *howto;
2340 unsigned long r_symndx;
2341 struct elf_link_hash_entry *h;
2342 Elf_Internal_Sym *sym;
2343 asection *sec;
0451c93c 2344 bfd_vma off;
a85d7ed0 2345 bfd_vma relocation;
b34976b6 2346 bfd_boolean unresolved_reloc;
a85d7ed0 2347 bfd_reloc_status_type r;
69fc87f1 2348 int tls_type;
470b557a 2349 asection *base_got = htab->elf.sgot;
a85d7ed0
NC		 2350
2351 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2352 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2353 || r_type == (int) R_390_GNU_VTENTRY)
2354 continue;
5236c819 2355 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2356 {
2357 bfd_set_error (bfd_error_bad_value);
b34976b6 2358 return FALSE;
a85d7ed0 2359 }
a85d7ed0 2360
b491616a 2361 howto = elf_howto_table + r_type;
a85d7ed0 2362 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2363
a85d7ed0
NC		 2364 h = NULL;
2365 sym = NULL;
2366 sec = NULL;
b34976b6 2367 unresolved_reloc = FALSE;
a85d7ed0
NC		 2368 if (r_symndx < symtab_hdr->sh_info)
2369 {
2370 sym = local_syms + r_symndx;
2371 sec = local_sections[r_symndx];
470b557a
AK		 2372
2373 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2374 {
2375 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2376 if (local_plt == NULL)
2377 return FALSE;
2378
2379 /* Address of the PLT slot. */
2380 relocation = (htab->elf.iplt->output_section->vma
2381 + htab->elf.iplt->output_offset
2382 + local_plt[r_symndx].plt.offset);
2383
2384 switch (r_type)
2385 {
31db78f6
AK		 2386 case R_390_PLTOFF16:
2387 case R_390_PLTOFF32:
2388 case R_390_PLTOFF64:
2389 relocation -= htab->elf.sgot->output_section->vma;
2390 break;
470b557a
AK		 2391 case R_390_GOTPLT12:
2392 case R_390_GOTPLT16:
2393 case R_390_GOTPLT20:
2394 case R_390_GOTPLT32:
2395 case R_390_GOTPLT64:
2396 case R_390_GOTPLTENT:
2397 case R_390_GOT12:
2398 case R_390_GOT16:
2399 case R_390_GOT20:
2400 case R_390_GOT32:
2401 case R_390_GOT64:
2402 case R_390_GOTENT:
2403 {
2404 /* Write the PLT slot address into the GOT slot. */
2405 bfd_put_64 (output_bfd, relocation,
2406 htab->elf.sgot->contents +
2407 local_got_offsets[r_symndx]);
2408 relocation = (local_got_offsets[r_symndx] +
2409 htab->elf.sgot->output_offset);
2410
2411 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2412 relocation += htab->elf.sgot->output_section->vma;
2413 break;
2414 }
2415 default:
2416 break;
2417 }
2418 /* The output section is needed later in
2419 finish_dynamic_section when creating the dynamic
2420 relocation. */
2421 local_plt[r_symndx].sec = sec;
2422 goto do_relocation;
2423 }
2424 else
2425 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2426 }
2427 else
2428 {
560e09e9 2429 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2430 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2431
b2a8e766
AM		 2432 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2433 r_symndx, symtab_hdr, sym_hashes,
2434 h, sec, relocation,
62d887d4 2435 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2436 }
2437
dbaa2011 2438 if (sec != NULL && discarded_section (sec))
e4067dbb 2439 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2440 rel, 1, relend, howto, 0, contents);
ab96bf03 2441
0e1862bb 2442 if (bfd_link_relocatable (info))
ab96bf03
AM		 2443 continue;
2444
a85d7ed0
NC		 2445 switch (r_type)
2446 {
5236c819
MS		 2447 case R_390_GOTPLT12:
2448 case R_390_GOTPLT16:
bd1ea41b 2449 case R_390_GOTPLT20:
5236c819
MS		 2450 case R_390_GOTPLT32:
2451 case R_390_GOTPLT64:
2452 case R_390_GOTPLTENT:
2453 /* There are three cases for a GOTPLT relocation. 1) The
2454 relocation is against the jump slot entry of a plt that
2455 will get emitted to the output file. 2) The relocation
2456 is against the jump slot of a plt entry that has been
2457 removed. elf_s390_adjust_gotplt has created a GOT entry
2458 as replacement. 3) The relocation is against a local symbol.
2459 Cases 2) and 3) are the same as the GOT relocation code
2460 so we just have to test for case 1 and fall through for
2461 the other two. */
2462 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2463 {
2464 bfd_vma plt_index;
2465
470b557a
AK		 2466 if (s390_is_ifunc_symbol_p (h))
2467 {
2468 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2469 relocation = (plt_index * GOT_ENTRY_SIZE +
2470 htab->elf.igotplt->output_offset);
2471 if (r_type == R_390_GOTPLTENT)
2472 relocation += htab->elf.igotplt->output_section->vma;
2473 }
2474 else
2475 {
2476 /* Calc. index no.
2477 Current offset - size first entry / entry size. */
2478 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2479 PLT_ENTRY_SIZE;
2480
2481 /* Offset in GOT is PLT index plus GOT headers(3)
2482 times 4, addr & GOT addr. */
2483 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2484 if (r_type == R_390_GOTPLTENT)
2485 relocation += htab->elf.sgot->output_section->vma;
2486 }
5236c819 2487 unresolved_reloc = FALSE;
5236c819
MS		 2488 break;
2489 }
2490 /* Fall through. */
2491
947216bf
AM		 2492 case R_390_GOT12:
2493 case R_390_GOT16:
bd1ea41b 2494 case R_390_GOT20:
947216bf
AM		 2495 case R_390_GOT32:
2496 case R_390_GOT64:
2497 case R_390_GOTENT:
2498 /* Relocation is to the entry for this symbol in the global
2499 offset table. */
470b557a 2500 if (base_got == NULL)
0451c93c 2501 abort ();
a85d7ed0 2502
947216bf
AM		 2503 if (h != NULL)
2504 {
b34976b6 2505 bfd_boolean dyn;
a85d7ed0 2506
947216bf 2507 off = h->got.offset;
0451c93c 2508 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2509
2510 if (s390_is_ifunc_symbol_p (h))
2511 {
2512 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2513 if (off == (bfd_vma)-1)
2514 {
2515 /* No explicit GOT usage so redirect to the
2516 got.iplt slot. */
2517 base_got = htab->elf.igotplt;
2518 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2519 }
2520 else
2521 {
2522 /* Explicit GOT slots must contain the address
2523 of the PLT slot. This will be handled in
2524 finish_dynamic_symbol. */
2525 }
2526 }
0e1862bb
L		 2527 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2528 bfd_link_pic (info),
2529 h)
2530 || (bfd_link_pic (info)
470b557a
AK		 2531 && SYMBOL_REFERENCES_LOCAL (info, h))
2532 || (ELF_ST_VISIBILITY (h->other)
2533 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2534 {
2535 /* This is actually a static link, or it is a
2536 -Bsymbolic link and the symbol is defined
2537 locally, or the symbol was forced to be local
2538 because of a version file. We must initialize
2539 this entry in the global offset table. Since the
2540 offset must always be a multiple of 2, we use the
2541 least significant bit to record whether we have
2542 initialized it already.
2543
2544 When doing a dynamic link, we create a .rel.got
2545 relocation entry to initialize the value. This
2546 is done in the finish_dynamic_symbol routine. */
2547 if ((off & 1) != 0)
2548 off &= ~1;
2549 else
2550 {
a85d7ed0 2551 bfd_put_64 (output_bfd, relocation,
470b557a 2552 base_got->contents + off);
947216bf
AM		 2553 h->got.offset |= 1;
2554 }
a63cc5f7
AK		 2555
2556 if ((h->def_regular
0e1862bb 2557 && bfd_link_pic (info)
a63cc5f7
AK		 2558 && SYMBOL_REFERENCES_LOCAL (info, h))
2559 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2560 && ((r_type == R_390_GOTENT
2561 && (bfd_get_16 (input_bfd,
2562 contents + rel->r_offset - 2)
2563 & 0xff0f) == 0xc408)
2564 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2565 || (r_type == R_390_GOT20
2566 && (bfd_get_32 (input_bfd,
2567 contents + rel->r_offset - 2)
2568 & 0xff00f000) == 0xe300c000
2569 && bfd_get_8 (input_bfd,
2570 contents + rel->r_offset + 3) == 0x04)))
2571
2572 {
2573 unsigned short new_insn =
2574 (0xc000 | (bfd_get_8 (input_bfd,
2575 contents + rel->r_offset - 1) & 0xf0));
2576 bfd_put_16 (output_bfd, new_insn,
2577 contents + rel->r_offset - 2);
2578 r_type = R_390_PC32DBL;
2579 rel->r_addend = 2;
2580 howto = elf_howto_table + r_type;
2581 relocation = h->root.u.def.value
2582 + h->root.u.def.section->output_section->vma
2583 + h->root.u.def.section->output_offset;
2584 goto do_relocation;
2585 }
947216bf 2586 }
0451c93c 2587 else
b34976b6 2588 unresolved_reloc = FALSE;
947216bf
AM		 2589 }
2590 else
2591 {
0451c93c
MS		 2592 if (local_got_offsets == NULL)
2593 abort ();
a85d7ed0 2594
947216bf 2595 off = local_got_offsets[r_symndx];
a85d7ed0 2596
947216bf
AM		 2597 /* The offset must always be a multiple of 8. We use
2598 the least significant bit to record whether we have
2599 already generated the necessary reloc. */
2600 if ((off & 1) != 0)
2601 off &= ~1;
2602 else
2603 {
2604 bfd_put_64 (output_bfd, relocation,
f41345a7 2605 htab->elf.sgot->contents + off);
a85d7ed0 2606
0e1862bb 2607 if (bfd_link_pic (info))
947216bf
AM		 2608 {
2609 asection *s;
2610 Elf_Internal_Rela outrel;
2611 bfd_byte *loc;
a85d7ed0 2612
f41345a7 2613 s = htab->elf.srelgot;
947216bf 2614 if (s == NULL)
0451c93c 2615 abort ();
a85d7ed0 2616
f41345a7
AK		 2617 outrel.r_offset = (htab->elf.sgot->output_section->vma
2618 + htab->elf.sgot->output_offset
947216bf
AM		 2619 + off);
2620 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2621 outrel.r_addend = relocation;
947216bf
AM		 2622 loc = s->contents;
2623 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2624 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2625 }
a85d7ed0 2626
947216bf
AM		 2627 local_got_offsets[r_symndx] |= 1;
2628 }
2629 }
a85d7ed0 2630
0451c93c
MS		 2631 if (off >= (bfd_vma) -2)
2632 abort ();
2633
470b557a 2634 relocation = base_got->output_offset + off;
0451c93c 2635
ae9a127f
NC		 2636 /* For @GOTENT the relocation is against the offset between
2637 the instruction and the symbols entry in the GOT and not
2638 between the start of the GOT and the symbols entry. We
2639 add the vma of the GOT to get the correct value. */
5236c819
MS		 2640 if ( r_type == R_390_GOTENT
2641 || r_type == R_390_GOTPLTENT)
470b557a 2642 relocation += base_got->output_section->vma;
a85d7ed0 2643
947216bf 2644 break;
99c79b2e 2645
5236c819
MS		 2646 case R_390_GOTOFF16:
2647 case R_390_GOTOFF32:
2648 case R_390_GOTOFF64:
947216bf
AM		 2649 /* Relocation is relative to the start of the global offset
2650 table. */
a85d7ed0 2651
d47b13e0
AK		 2652 if (h != NULL
2653 && s390_is_ifunc_symbol_p (h)
2654 && h->def_regular
2655 && !bfd_link_executable (info))
2656 {
2657 relocation = (htab->elf.iplt->output_section->vma
2658 + htab->elf.iplt->output_offset
2659 + h->plt.offset
2660 - htab->elf.sgot->output_section->vma);
2661 goto do_relocation;
2662 }
2663
947216bf
AM		 2664 /* Note that sgot->output_offset is not involved in this
2665 calculation. We always want the start of .got. If we
2666 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2667 permitted by the ABI, we might have to change this
2668 calculation. */
f41345a7 2669 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2670 break;
a85d7ed0 2671
947216bf 2672 case R_390_GOTPC:
a85d7ed0 2673 case R_390_GOTPCDBL:
947216bf 2674 /* Use global offset table as symbol value. */
f41345a7 2675 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2676 unresolved_reloc = FALSE;
947216bf 2677 break;
a85d7ed0 2678
fb798c50 2679 case R_390_PLT12DBL:
947216bf 2680 case R_390_PLT16DBL:
fb798c50 2681 case R_390_PLT24DBL:
947216bf
AM		 2682 case R_390_PLT32:
2683 case R_390_PLT32DBL:
2684 case R_390_PLT64:
2685 /* Relocation is to the entry for this symbol in the
2686 procedure linkage table. */
a85d7ed0 2687
947216bf
AM		 2688 /* Resolve a PLT32 reloc against a local symbol directly,
2689 without using the procedure linkage table. */
2690 if (h == NULL)
2691 break;
a85d7ed0 2692
947216bf 2693 if (h->plt.offset == (bfd_vma) -1
31db78f6 2694 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2695 {
2696 /* We didn't make a PLT entry for this symbol. This
2697 happens when statically linking PIC code, or when
2698 using -Bsymbolic. */
2699 break;
2700 }
470b557a
AK		 2701 if (s390_is_ifunc_symbol_p (h))
2702 relocation = (htab->elf.iplt->output_section->vma
2703 + htab->elf.iplt->output_offset
2704 + h->plt.offset);
2705 else
2706 relocation = (htab->elf.splt->output_section->vma
2707 + htab->elf.splt->output_offset
2708 + h->plt.offset);
b34976b6 2709 unresolved_reloc = FALSE;
26e41594 2710 break;
5236c819
MS		 2711
2712 case R_390_PLTOFF16:
2713 case R_390_PLTOFF32:
2714 case R_390_PLTOFF64:
26e41594
AM		 2715 /* Relocation is to the entry for this symbol in the
2716 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2717
2718 /* For local symbols or if we didn't make a PLT entry for
2719 this symbol resolve the symbol directly. */
31db78f6 2720 if (h == NULL
5236c819 2721 || h->plt.offset == (bfd_vma) -1
31db78f6 2722 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2723 {
f41345a7 2724 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2725 break;
2726 }
2727
470b557a
AK		 2728 if (s390_is_ifunc_symbol_p (h))
2729 relocation = (htab->elf.iplt->output_section->vma
2730 + htab->elf.iplt->output_offset
2731 + h->plt.offset
2732 - htab->elf.sgot->output_section->vma);
2733 else
2734 relocation = (htab->elf.splt->output_section->vma
2735 + htab->elf.splt->output_offset
2736 + h->plt.offset
2737 - htab->elf.sgot->output_section->vma);
5236c819 2738 unresolved_reloc = FALSE;
947216bf
AM		 2739 break;
2740
947216bf 2741 case R_390_PC16:
fb798c50 2742 case R_390_PC12DBL:
947216bf 2743 case R_390_PC16DBL:
fb798c50 2744 case R_390_PC24DBL:
947216bf 2745 case R_390_PC32:
a85d7ed0 2746 case R_390_PC32DBL:
947216bf 2747 case R_390_PC64:
99ba5125
AK		 2748 /* The target of these relocs are instruction operands
2749 residing in read-only sections. We cannot emit a runtime
2750 reloc for it. */
2751 if (h != NULL
2752 && s390_is_ifunc_symbol_p (h)
2753 && h->def_regular
2754 && bfd_link_pic (info))
2755 {
2756 relocation = (htab->elf.iplt->output_section->vma
2757 + htab->elf.iplt->output_offset
2758 + h->plt.offset);
2759 goto do_relocation;
2760 }
2761
2762 case R_390_8:
2763 case R_390_16:
2764 case R_390_32:
2765 case R_390_64:
470b557a
AK		 2766
2767 if (h != NULL
2768 && s390_is_ifunc_symbol_p (h)
2769 && h->def_regular)
2770 {
0e1862bb 2771 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK		 2772 {
2773 /* For a non-shared object STT_GNU_IFUNC symbol must
2774 go through PLT. */
2775 relocation = (htab->elf.iplt->output_section->vma
2776 + htab->elf.iplt->output_offset
2777 + h ->plt.offset);
2778 goto do_relocation;
2779 }
2780 else
2781 {
2782 /* For shared objects a runtime relocation is needed. */
2783
2784 Elf_Internal_Rela outrel;
2785 asection *sreloc;
2786
2787 /* Need a dynamic relocation to get the real function
2788 address. */
2789 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2790 info,
2791 input_section,
2792 rel->r_offset);
2793 if (outrel.r_offset == (bfd_vma) -1
2794 || outrel.r_offset == (bfd_vma) -2)
2795 abort ();
2796
2797 outrel.r_offset += (input_section->output_section->vma
2798 + input_section->output_offset);
2799
2800 if (h->dynindx == -1
2801 || h->forced_local
0e1862bb 2802 || bfd_link_executable (info))
470b557a
AK		 2803 {
2804 /* This symbol is resolved locally. */
2805 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2806 outrel.r_addend = (h->root.u.def.value
2807 + h->root.u.def.section->output_section->vma
2808 + h->root.u.def.section->output_offset);
2809 }
2810 else
2811 {
2812 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2813 outrel.r_addend = 0;
2814 }
2815
2816 sreloc = htab->elf.irelifunc;
2817 elf_append_rela (output_bfd, sreloc, &outrel);
2818
2819 /* If this reloc is against an external symbol, we
2820 do not want to fiddle with the addend. Otherwise,
2821 we need to include the symbol value so that it
2822 becomes an addend for the dynamic reloc. For an
2823 internal symbol, we have updated addend. */
2824 continue;
2825 }
2826 }
2827
b1e24c02 2828 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2829 break;
2830
0e1862bb 2831 if ((bfd_link_pic (info)
82058a73
MS		 2832 && (h == NULL
2833 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2834 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2835 && ((r_type != R_390_PC16
fb798c50 2836 && r_type != R_390_PC12DBL
0451c93c 2837 && r_type != R_390_PC16DBL
fb798c50 2838 && r_type != R_390_PC24DBL
0451c93c
MS		 2839 && r_type != R_390_PC32
2840 && r_type != R_390_PC32DBL
2841 && r_type != R_390_PC64)
8c21ca21 2842 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2843 || (ELIMINATE_COPY_RELOCS
0e1862bb 2844 && !bfd_link_pic (info)
0451c93c
MS		 2845 && h != NULL
2846 && h->dynindx != -1
f5385ebf
AM		 2847 && !h->non_got_ref
2848 && ((h->def_dynamic
2849 && !h->def_regular)
0451c93c
MS		 2850 || h->root.type == bfd_link_hash_undefweak
2851 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2852 {
2853 Elf_Internal_Rela outrel;
b34976b6 2854 bfd_boolean skip, relocate;
0451c93c 2855 asection *sreloc;
947216bf 2856 bfd_byte *loc;
a85d7ed0 2857
947216bf
AM		 2858 /* When generating a shared object, these relocations
2859 are copied into the output file to be resolved at run
2860 time. */
b34976b6
AM		 2861 skip = FALSE;
2862 relocate = FALSE;
a85d7ed0 2863
c629eae0
JJ		 2864 outrel.r_offset =
2865 _bfd_elf_section_offset (output_bfd, info, input_section,
2866 rel->r_offset);
2867 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2868 skip = TRUE;
0bb2d96a 2869 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2870 skip = TRUE, relocate = TRUE;
a85d7ed0 2871
947216bf
AM		 2872 outrel.r_offset += (input_section->output_section->vma
2873 + input_section->output_offset);
a85d7ed0 2874
947216bf 2875 if (skip)
0bb2d96a 2876 memset (&outrel, 0, sizeof outrel);
947216bf 2877 else if (h != NULL
0451c93c
MS		 2878 && h->dynindx != -1
2879 && (r_type == R_390_PC16
fb798c50 2880 || r_type == R_390_PC12DBL
0451c93c 2881 || r_type == R_390_PC16DBL
fb798c50 2882 || r_type == R_390_PC24DBL
0451c93c
MS		 2883 || r_type == R_390_PC32
2884 || r_type == R_390_PC32DBL
2885 || r_type == R_390_PC64
0e1862bb 2886 || !bfd_link_pic (info)
8c21ca21 2887 || !SYMBOLIC_BIND (info, h)
f5385ebf 2888 || !h->def_regular))
947216bf
AM		 2889 {
2890 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2891 outrel.r_addend = rel->r_addend;
947216bf
AM		 2892 }
2893 else
2894 {
0451c93c 2895 /* This symbol is local, or marked to become local. */
90ced0dd 2896 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2897 if (r_type == R_390_64)
2898 {
2899 relocate = TRUE;
2900 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2901 }
2902 else
2903 {
2904 long sindx;
2905
90ced0dd 2906 if (bfd_is_abs_section (sec))
b5727d75
MS		 2907 sindx = 0;
2908 else if (sec == NULL || sec->owner == NULL)
2909 {
2910 bfd_set_error(bfd_error_bad_value);
2911 return FALSE;
2912 }
2913 else
2914 {
2915 asection *osec;
2916
2917 osec = sec->output_section;
2918 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2919
2920 if (sindx == 0)
2921 {
2922 osec = htab->elf.text_index_section;
2923 sindx = elf_section_data (osec)->dynindx;
2924 }
2925 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2926
2927 /* We are turning this relocation into one
2928 against a section symbol, so subtract out
2929 the output section's address but not the
2930 offset of the input section in the output
2931 section. */
90ced0dd 2932 outrel.r_addend -= osec->vma;
b5727d75
MS		 2933 }
2934 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2935 }
0451c93c 2936 }
a85d7ed0 2937
0451c93c
MS		 2938 sreloc = elf_section_data (input_section)->sreloc;
2939 if (sreloc == NULL)
2940 abort ();
2941
947216bf
AM		 2942 loc = sreloc->contents;
2943 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2944 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2945
947216bf
AM		 2946 /* If this reloc is against an external symbol, we do
2947 not want to fiddle with the addend. Otherwise, we
2948 need to include the symbol value so that it becomes
2949 an addend for the dynamic reloc. */
2950 if (! relocate)
2951 continue;
2952 }
a85d7ed0 2953
947216bf 2954 break;
a85d7ed0 2955
69fc87f1
MS		 2956 /* Relocations for tls literal pool entries. */
2957 case R_390_TLS_IE64:
0e1862bb 2958 if (bfd_link_pic (info))
69fc87f1
MS		 2959 {
2960 Elf_Internal_Rela outrel;
2961 asection *sreloc;
2962 bfd_byte *loc;
2963
2964 outrel.r_offset = rel->r_offset
2965 + input_section->output_section->vma
2966 + input_section->output_offset;
2967 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2968 sreloc = elf_section_data (input_section)->sreloc;
2969 if (sreloc == NULL)
2970 abort ();
2971 loc = sreloc->contents;
2972 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2973 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2974 }
ae9a127f 2975 /* Fall through. */
69fc87f1
MS		 2976
2977 case R_390_TLS_GD64:
2978 case R_390_TLS_GOTIE64:
2979 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2980 tls_type = GOT_UNKNOWN;
2981 if (h == NULL && local_got_offsets)
2982 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2983 else if (h != NULL)
2984 {
2985 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2986 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2987 r_type = R_390_TLS_LE64;
2988 }
2989 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2990 r_type = R_390_TLS_IE64;
2991
2992 if (r_type == R_390_TLS_LE64)
2993 {
2994 /* This relocation gets optimized away by the local exec
2995 access optimization. */
2996 BFD_ASSERT (! unresolved_reloc);
2997 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2998 contents + rel->r_offset);
2999 continue;
3000 }
3001
f41345a7 3002 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3003 abort ();
3004
3005 if (h != NULL)
3006 off = h->got.offset;
3007 else
3008 {
3009 if (local_got_offsets == NULL)
3010 abort ();
3011
3012 off = local_got_offsets[r_symndx];
3013 }
3014
3015 emit_tls_relocs:
3016
3017 if ((off & 1) != 0)
3018 off &= ~1;
26e41594 3019 else
69fc87f1
MS		 3020 {
3021 Elf_Internal_Rela outrel;
3022 bfd_byte *loc;
3023 int dr_type, indx;
3024
f41345a7 3025 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3026 abort ();
3027
f41345a7
AK		 3028 outrel.r_offset = (htab->elf.sgot->output_section->vma
3029 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3030
3031 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3032 if (r_type == R_390_TLS_GD64)
3033 dr_type = R_390_TLS_DTPMOD;
3034 else
3035 dr_type = R_390_TLS_TPOFF;
3036 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3037 outrel.r_addend = relocation - dtpoff_base (info);
3038 else
3039 outrel.r_addend = 0;
3040 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 3041 loc = htab->elf.srelgot->contents;
3042 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3043 * sizeof (Elf64_External_Rela);
3044 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3045
3046 if (r_type == R_390_TLS_GD64)
3047 {
3048 if (indx == 0)
3049 {
3050 BFD_ASSERT (! unresolved_reloc);
3051 bfd_put_64 (output_bfd,
3052 relocation - dtpoff_base (info),
f41345a7 3053 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3054 }
3055 else
3056 {
3057 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
3058 outrel.r_offset += GOT_ENTRY_SIZE;
3059 outrel.r_addend = 0;
f41345a7 3060 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3061 loc += sizeof (Elf64_External_Rela);
3062 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3063 }
3064 }
3065
3066 if (h != NULL)
3067 h->got.offset |= 1;
3068 else
3069 local_got_offsets[r_symndx] |= 1;
3070 }
3071
3072 if (off >= (bfd_vma) -2)
3073 abort ();
3074 if (r_type == ELF64_R_TYPE (rel->r_info))
3075 {
f41345a7 3076 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3077 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 3078 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3079 unresolved_reloc = FALSE;
3080 }
3081 else
3082 {
f41345a7 3083 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3084 contents + rel->r_offset);
3085 continue;
3086 }
3087 break;
3088
3089 case R_390_TLS_GOTIE12:
bd1ea41b 3090 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3091 case R_390_TLS_IEENT:
3092 if (h == NULL)
3093 {
3094 if (local_got_offsets == NULL)
3095 abort();
3096 off = local_got_offsets[r_symndx];
0e1862bb 3097 if (bfd_link_pic (info))
69fc87f1
MS		 3098 goto emit_tls_relocs;
3099 }
3100 else
3101 {
3102 off = h->got.offset;
3103 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 3104 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3105 goto emit_tls_relocs;
3106 }
3107
f41345a7 3108 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3109 abort ();
3110
3111 BFD_ASSERT (! unresolved_reloc);
3112 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3113 htab->elf.sgot->contents + off);
3114 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3115 if (r_type == R_390_TLS_IEENT)
f41345a7 3116 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3117 unresolved_reloc = FALSE;
3118 break;
3119
3120 case R_390_TLS_LDM64:
0e1862bb 3121 if (! bfd_link_pic (info))
69fc87f1
MS		 3122 /* The literal pool entry this relocation refers to gets ignored
3123 by the optimized code of the local exec model. Do nothing
3124 and the value will turn out zero. */
3125 continue;
3126
f41345a7 3127 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3128 abort ();
3129
3130 off = htab->tls_ldm_got.offset;
3131 if (off & 1)
3132 off &= ~1;
3133 else
3134 {
3135 Elf_Internal_Rela outrel;
3136 bfd_byte *loc;
3137
f41345a7 3138 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3139 abort ();
3140
f41345a7
AK		 3141 outrel.r_offset = (htab->elf.sgot->output_section->vma
3142 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3143
3144 bfd_put_64 (output_bfd, 0,
f41345a7 3145 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3146 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3147 outrel.r_addend = 0;
f41345a7
AK		 3148 loc = htab->elf.srelgot->contents;
3149 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3150 * sizeof (Elf64_External_Rela);
3151 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3152 htab->tls_ldm_got.offset |= 1;
3153 }
f41345a7 3154 relocation = htab->elf.sgot->output_offset + off;
26e41594 3155 unresolved_reloc = FALSE;
69fc87f1
MS		 3156 break;
3157
3158 case R_390_TLS_LE64:
3cbc1e5e 3159 if (bfd_link_dll (info))
69fc87f1
MS		 3160 {
3161 /* Linking a shared library with non-fpic code requires
3162 a R_390_TLS_TPOFF relocation. */
3163 Elf_Internal_Rela outrel;
3164 asection *sreloc;
3165 bfd_byte *loc;
3166 int indx;
3167
3168 outrel.r_offset = rel->r_offset
3169 + input_section->output_section->vma
3170 + input_section->output_offset;
3171 if (h != NULL && h->dynindx != -1)
3172 indx = h->dynindx;
3173 else
3174 indx = 0;
3175 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3176 if (indx == 0)
3177 outrel.r_addend = relocation - dtpoff_base (info);
3178 else
3179 outrel.r_addend = 0;
3180 sreloc = elf_section_data (input_section)->sreloc;
3181 if (sreloc == NULL)
3182 abort ();
3183 loc = sreloc->contents;
3184 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3185 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3186 }
3187 else
3188 {
3189 BFD_ASSERT (! unresolved_reloc);
3190 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3191 contents + rel->r_offset);
3192 }
3193 continue;
3194
3195 case R_390_TLS_LDO64:
0e1862bb 3196 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3197 relocation -= dtpoff_base (info);
3198 else
3199 /* When converting LDO to LE, we must negate. */
3200 relocation = -tpoff (info, relocation);
3201 break;
3202
3203 /* Relocations for tls instructions. */
3204 case R_390_TLS_LOAD:
3205 case R_390_TLS_GDCALL:
3206 case R_390_TLS_LDCALL:
3207 tls_type = GOT_UNKNOWN;
3208 if (h == NULL && local_got_offsets)
3209 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3210 else if (h != NULL)
3211 tls_type = elf_s390_hash_entry(h)->tls_type;
3212
3213 if (tls_type == GOT_TLS_GD)
3214 continue;
3215
3216 if (r_type == R_390_TLS_LOAD)
3217 {
0e1862bb 3218 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3219 {
3220 /* IE->LE transition. Four valid cases:
3221 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3222 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3223 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3224 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3225 unsigned int insn0, insn1, ry;
3226
3227 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3228 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3229 if (insn1 != 0x0004)
3230 invalid_tls_insn (input_bfd, input_section, rel);
3231 ry = 0;
3232 if ((insn0 & 0xff00f000) == 0xe3000000)
3233 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3234 ry = (insn0 & 0x000f0000);
3235 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3236 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3237 ry = (insn0 & 0x0000f000) << 4;
3238 else if ((insn0 & 0xff00f000) == 0xe300c000)
3239 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3240 ry = (insn0 & 0x000f0000);
3241 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3242 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3243 ry = (insn0 & 0x0000f000) << 4;
3244 else
3245 invalid_tls_insn (input_bfd, input_section, rel);
3246 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3247 insn1 = 0x000d;
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 else if (r_type == R_390_TLS_GDCALL)
3253 {
3254 unsigned int insn0, insn1;
3255
3256 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3257 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3258 if ((insn0 & 0xffff0000) != 0xc0e50000)
3259 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3260 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3261 {
3262 /* GD->LE transition.
3263 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3264 insn0 = 0xc0040000;
3265 insn1 = 0x0000;
3266 }
3267 else
3268 {
3269 /* GD->IE transition.
3270 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3271 insn0 = 0xe322c000;
3272 insn1 = 0x0004;
3273 }
3274 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3275 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3276 }
3277 else if (r_type == R_390_TLS_LDCALL)
3278 {
0e1862bb 3279 if (!bfd_link_pic (info))
69fc87f1
MS		 3280 {
3281 unsigned int insn0, insn1;
3282
3283 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3284 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3285 if ((insn0 & 0xffff0000) != 0xc0e50000)
3286 invalid_tls_insn (input_bfd, input_section, rel);
3287 /* LD->LE transition.
3288 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3289 insn0 = 0xc0040000;
3290 insn1 = 0x0000;
3291 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3292 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3293 }
3294 }
3295 continue;
3296
947216bf
AM		 3297 default:
3298 break;
3299 }
a85d7ed0 3300
239e1f3a
AM		 3301 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3302 because such sections are not SEC_ALLOC and thus ld.so will
3303 not process them. */
0451c93c 3304 if (unresolved_reloc
239e1f3a 3305 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3306 && h->def_dynamic)
3307 && _bfd_elf_section_offset (output_bfd, info, input_section,
3308 rel->r_offset) != (bfd_vma) -1)
0451c93c 3309 (*_bfd_error_handler)
843fe662 3310 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3311 input_bfd,
3312 input_section,
0451c93c 3313 (long) rel->r_offset,
843fe662 3314 howto->name,
0451c93c
MS		 3315 h->root.root.string);
3316
470b557a
AK		 3317 do_relocation:
3318
fb798c50
AK		 3319 /* When applying a 24 bit reloc we need to start one byte
3320 earlier. Otherwise the 32 bit get/put bfd operations might
3321 access a byte after the actual section. */
3322 if (r_type == R_390_PC24DBL
3323 || r_type == R_390_PLT24DBL)
3324 rel->r_offset--;
3325
bd1ea41b
MS		 3326 if (r_type == R_390_20
3327 || r_type == R_390_GOT20
3328 || r_type == R_390_GOTPLT20
3329 || r_type == R_390_TLS_GOTIE20)
3330 {
3331 relocation += rel->r_addend;
3332 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3333 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3334 contents, rel->r_offset,
3335 relocation, 0);
3336 }
3337 else
3338 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3339 contents, rel->r_offset,
3340 relocation, rel->r_addend);
3341
3342 if (r != bfd_reloc_ok)
3343 {
0451c93c 3344 const char *name;
ec338859 3345
0451c93c
MS		 3346 if (h != NULL)
3347 name = h->root.root.string;
3348 else
a85d7ed0 3349 {
0451c93c
MS		 3350 name = bfd_elf_string_from_elf_section (input_bfd,
3351 symtab_hdr->sh_link,
3352 sym->st_name);
3353 if (name == NULL)
b34976b6 3354 return FALSE;
0451c93c
MS		 3355 if (*name == '\0')
3356 name = bfd_section_name (input_bfd, sec);
3357 }
ec338859 3358
0451c93c
MS		 3359 if (r == bfd_reloc_overflow)
3360 {
ec338859 3361
0451c93c 3362 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3363 (info, (h ? &h->root : NULL), name, howto->name,
3364 (bfd_vma) 0, input_bfd, input_section,
3365 rel->r_offset)))
b34976b6 3366 return FALSE;
0451c93c
MS		 3367 }
3368 else
3369 {
3370 (*_bfd_error_handler)
d003868e
AM		 3371 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3372 input_bfd, input_section,
0451c93c 3373 (long) rel->r_offset, name, (int) r);
b34976b6 3374 return FALSE;
a85d7ed0
NC		 3375 }
3376 }
3377 }
3378
b34976b6 3379 return TRUE;
a85d7ed0
NC		 3380}
3381
470b557a
AK		 3382/* Generate the PLT slots together with the dynamic relocations needed
3383 for IFUNC symbols. */
3384
3385static void
3386elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3387 struct bfd_link_info *info,
3388 struct elf_link_hash_entry *h,
3389 struct elf_s390_link_hash_table *htab,
3390 bfd_vma plt_offset,
3391 bfd_vma resolver_address)
3392{
3393 bfd_vma plt_index;
3394 bfd_vma got_offset;
3395 Elf_Internal_Rela rela;
3396 bfd_byte *loc;
3397 asection *plt, *gotplt, *relplt;
3398
3399 if (htab->elf.iplt == NULL
3400 || htab->elf.igotplt == NULL
3401 || htab->elf.irelplt == NULL)
3402 abort ();
3403
3404 /* Index of the PLT slot within iplt section. */
3405 plt_index = plt_offset / PLT_ENTRY_SIZE;
3406 plt = htab->elf.iplt;
3407 /* Offset into the igot.plt section. */
3408 got_offset = plt_index * GOT_ENTRY_SIZE;
3409 gotplt = htab->elf.igotplt;
3410 relplt = htab->elf.irelplt;
3411
3412 /* Fill in the blueprint of a PLT. */
3413 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3414 PLT_ENTRY_SIZE);
3415
3416 /* Fixup the relative address to the GOT entry */
3417 bfd_put_32 (output_bfd,
3418 (gotplt->output_section->vma +
3419 gotplt->output_offset + got_offset
3420 - (plt->output_section->vma +
3421 plt->output_offset +
3422 plt_offset))/2,
3423 plt->contents + plt_offset + 2);
3424 /* Fixup the relative branch to PLT 0 */
3425 bfd_put_32 (output_bfd, - (plt->output_offset +
3426 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3427 plt->contents + plt_offset + 24);
3428 /* Fixup offset into .rela.plt section. */
3429 bfd_put_32 (output_bfd, relplt->output_offset +
3430 plt_index * sizeof (Elf64_External_Rela),
3431 plt->contents + plt_offset + 28);
3432
3433 /* Fill in the entry in the global offset table.
3434 Points to instruction after GOT offset. */
3435 bfd_put_64 (output_bfd,
3436 (plt->output_section->vma
3437 + plt->output_offset
3438 + plt_offset
3439 + 14),
3440 gotplt->contents + got_offset);
3441
3442 /* Fill in the entry in the .rela.plt section. */
3443 rela.r_offset = (gotplt->output_section->vma
3444 + gotplt->output_offset
3445 + got_offset);
3446
3447 if (!h
3448 || h->dynindx == -1
0e1862bb 3449 || ((bfd_link_executable (info)
470b557a
AK		 3450 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3451 && h->def_regular))
3452 {
3453 /* The symbol can be locally resolved. */
3454 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3455 rela.r_addend = resolver_address;
3456 }
3457 else
3458 {
3459 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3460 rela.r_addend = 0;
3461 }
3462
3463 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3464 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3465}
3466
3467
a85d7ed0
NC		 3468/* Finish up dynamic symbol handling. We set the contents of various
3469 dynamic sections here. */
3470
b34976b6 3471static bfd_boolean
4dfe6ac6
NC		 3472elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3473 struct bfd_link_info *info,
3474 struct elf_link_hash_entry *h,
3475 Elf_Internal_Sym *sym)
a85d7ed0 3476{
0451c93c 3477 struct elf_s390_link_hash_table *htab;
470b557a 3478 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3479
0451c93c 3480 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3481 if (htab == NULL)
3482 return FALSE;
a85d7ed0
NC		 3483
3484 if (h->plt.offset != (bfd_vma) -1)
3485 {
a85d7ed0 3486 bfd_vma plt_index;
0451c93c
MS		 3487 bfd_vma got_offset;
3488 Elf_Internal_Rela rela;
947216bf 3489 bfd_byte *loc;
a85d7ed0
NC		 3490
3491 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3492 it up. */
0a511368 3493 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3494 {
0a511368
AK		 3495 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3496 htab, h->plt.offset,
3497 eh->ifunc_resolver_address +
3498 eh->ifunc_resolver_section->output_offset +
3499 eh->ifunc_resolver_section->output_section->vma);
3500
3501 /* Do not return yet. Handling of explicit GOT slots of
3502 IFUNC symbols is below. */
470b557a
AK		 3503 }
3504 else
3505 {
3506 if (h->dynindx == -1
3507 || htab->elf.splt == NULL
3508 || htab->elf.sgotplt == NULL
3509 || htab->elf.srelplt == NULL)
3510 abort ();
a85d7ed0 3511
470b557a
AK		 3512 /* Calc. index no.
3513 Current offset - size first entry / entry size. */
3514 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3515
470b557a
AK		 3516 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3517 addr & GOT addr. */
3518 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3519
470b557a
AK		 3520 /* Fill in the blueprint of a PLT. */
3521 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3522 PLT_ENTRY_SIZE);
3523
3524 /* Fixup the relative address to the GOT entry */
3525 bfd_put_32 (output_bfd,
3526 (htab->elf.sgotplt->output_section->vma +
3527 htab->elf.sgotplt->output_offset + got_offset
3528 - (htab->elf.splt->output_section->vma +
3529 htab->elf.splt->output_offset +
3530 h->plt.offset))/2,
3531 htab->elf.splt->contents + h->plt.offset + 2);
3532 /* Fixup the relative branch to PLT 0 */
3533 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3534 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3535 htab->elf.splt->contents + h->plt.offset + 24);
3536 /* Fixup offset into .rela.plt section. */
3537 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3538 htab->elf.splt->contents + h->plt.offset + 28);
3539
3540 /* Fill in the entry in the global offset table.
3541 Points to instruction after GOT offset. */
3542 bfd_put_64 (output_bfd,
3543 (htab->elf.splt->output_section->vma
3544 + htab->elf.splt->output_offset
3545 + h->plt.offset
3546 + 14),
3547 htab->elf.sgotplt->contents + got_offset);
3548
3549 /* Fill in the entry in the .rela.plt section. */
3550 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3551 + htab->elf.sgotplt->output_offset
3552 + got_offset);
3553 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3554 rela.r_addend = 0;
3555 loc = htab->elf.srelplt->contents + plt_index *
3556 sizeof (Elf64_External_Rela);
3557 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3558
3559 if (!h->def_regular)
3560 {
3561 /* Mark the symbol as undefined, rather than as defined in
3562 the .plt section. Leave the value alone. This is a clue
3563 for the dynamic linker, to make function pointer
3564 comparisons work between an application and shared
3565 library. */
3566 sym->st_shndx = SHN_UNDEF;
3567 }
a85d7ed0
NC		 3568 }
3569 }
3570
69fc87f1
MS		 3571 if (h->got.offset != (bfd_vma) -1
3572 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3573 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3574 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3575 {
a85d7ed0 3576 Elf_Internal_Rela rela;
947216bf 3577 bfd_byte *loc;
a85d7ed0
NC		 3578
3579 /* This symbol has an entry in the global offset table. Set it
947216bf 3580 up. */
f41345a7 3581 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3582 abort ();
a85d7ed0 3583
f41345a7
AK		 3584 rela.r_offset = (htab->elf.sgot->output_section->vma
3585 + htab->elf.sgot->output_offset
dc810e39 3586 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3587
470b557a
AK		 3588 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3589 {
0e1862bb 3590 if (bfd_link_pic (info))
470b557a
AK		 3591 {
3592 /* An explicit GOT slot usage needs GLOB_DAT. If the
3593 symbol references local the implicit got.iplt slot
3594 will be used and the IRELATIVE reloc has been created
3595 above. */
3596 goto do_glob_dat;
3597 }
3598 else
3599 {
3600 /* For non-shared objects explicit GOT slots must be
3601 filled with the PLT slot address for pointer
3602 equality reasons. */
3603 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3604 + htab->elf.iplt->output_offset
3605 + h->plt.offset),
3606 htab->elf.sgot->contents + h->got.offset);
3607 return TRUE;
3608 }
3609 }
0e1862bb 3610 else if (bfd_link_pic (info)
8c21ca21 3611 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3612 {
470b557a
AK		 3613 /* If this is a static link, or it is a -Bsymbolic link and
3614 the symbol is defined locally or was forced to be local
3615 because of a version file, we just want to emit a
3616 RELATIVE reloc. The entry in the global offset table
3617 will already have been initialized in the
3618 relocate_section function. */
8c21ca21
AK		 3619 if (!h->def_regular)
3620 return FALSE;
0451c93c 3621 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3622 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3623 rela.r_addend = (h->root.u.def.value
3624 + h->root.u.def.section->output_section->vma
3625 + h->root.u.def.section->output_offset);
3626 }
a85d7ed0
NC		 3627 else
3628 {
3629 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3630do_glob_dat:
f41345a7 3631 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3632 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3633 rela.r_addend = 0;
3634 }
a85d7ed0 3635
f41345a7
AK		 3636 loc = htab->elf.srelgot->contents;
3637 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3638 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3639 }
3640
f5385ebf 3641 if (h->needs_copy)
a85d7ed0 3642 {
a85d7ed0 3643 Elf_Internal_Rela rela;
947216bf 3644 bfd_byte *loc;
a85d7ed0
NC		 3645
3646 /* This symbols needs a copy reloc. Set it up. */
3647
0451c93c
MS		 3648 if (h->dynindx == -1
3649 || (h->root.type != bfd_link_hash_defined
3650 && h->root.type != bfd_link_hash_defweak)
3651 || htab->srelbss == NULL)
3652 abort ();
a85d7ed0
NC		 3653
3654 rela.r_offset = (h->root.u.def.value
3655 + h->root.u.def.section->output_section->vma
3656 + h->root.u.def.section->output_offset);
3657 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3658 rela.r_addend = 0;
947216bf
AM		 3659 loc = htab->srelbss->contents;
3660 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3661 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3662 }
3663
3664 /* Mark some specially defined symbols as absolute. */
9637f6ef 3665 if (h == htab->elf.hdynamic
22edb2f1
RS		 3666 || h == htab->elf.hgot
3667 || h == htab->elf.hplt)
a85d7ed0
NC		 3668 sym->st_shndx = SHN_ABS;
3669
b34976b6 3670 return TRUE;
a85d7ed0
NC		 3671}
3672
0451c93c
MS		 3673/* Used to decide how to sort relocs in an optimal manner for the
3674 dynamic linker, before writing them out. */
3675
3676static enum elf_reloc_type_class
7e612e98
AM		 3677elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3678 const asection *rel_sec ATTRIBUTE_UNUSED,
3679 const Elf_Internal_Rela *rela)
0451c93c 3680{
0f042c67
AK		 3681 bfd *abfd = info->output_bfd;
3682 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3683 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3684 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3685 Elf_Internal_Sym sym;
3686
3687 if (htab->elf.dynsym == NULL
3688 || !bed->s->swap_symbol_in (abfd,
3689 (htab->elf.dynsym->contents
3690 + r_symndx * bed->s->sizeof_sym),
3691 0, &sym))
3692 abort ();
3693
3694 /* Check relocation against STT_GNU_IFUNC symbol. */
3695 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3696 return reloc_class_ifunc;
3697
0451c93c
MS		 3698 switch ((int) ELF64_R_TYPE (rela->r_info))
3699 {
3700 case R_390_RELATIVE:
3701 return reloc_class_relative;
3702 case R_390_JMP_SLOT:
3703 return reloc_class_plt;
3704 case R_390_COPY:
3705 return reloc_class_copy;
3706 default:
3707 return reloc_class_normal;
3708 }
3709}
3710
a85d7ed0
NC		 3711/* Finish up the dynamic sections. */
3712
b34976b6 3713static bfd_boolean
4dfe6ac6
NC		 3714elf_s390_finish_dynamic_sections (bfd *output_bfd,
3715 struct bfd_link_info *info)
a85d7ed0 3716{
0451c93c 3717 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3718 bfd *dynobj;
3719 asection *sdyn;
470b557a
AK		 3720 bfd *ibfd;
3721 unsigned int i;
a85d7ed0 3722
0451c93c 3723 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3724 if (htab == NULL)
3725 return FALSE;
3726
0451c93c 3727 dynobj = htab->elf.dynobj;
3d4d4302 3728 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3729
0451c93c 3730 if (htab->elf.dynamic_sections_created)
a85d7ed0 3731 {
a85d7ed0
NC		 3732 Elf64_External_Dyn *dyncon, *dynconend;
3733
f41345a7 3734 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3735 abort ();
a85d7ed0
NC		 3736
3737 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3738 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3739 for (; dyncon < dynconend; dyncon++)
3740 {
3741 Elf_Internal_Dyn dyn;
a85d7ed0 3742 asection *s;
ec338859 3743
a85d7ed0 3744 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3745
a85d7ed0
NC		 3746 switch (dyn.d_tag)
3747 {
3748 default:
0451c93c 3749 continue;
ec338859 3750
a85d7ed0 3751 case DT_PLTGOT:
f41345a7 3752 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3753 break;
ec338859 3754
a85d7ed0 3755 case DT_JMPREL:
f41345a7 3756 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0 3757 break;
ec338859 3758
a85d7ed0 3759 case DT_PLTRELSZ:
f41345a7 3760 s = htab->elf.srelplt->output_section;
eea6121a 3761 dyn.d_un.d_val = s->size;
a85d7ed0 3762 break;
ec338859 3763
a85d7ed0
NC		 3764 case DT_RELASZ:
3765 /* The procedure linkage table relocs (DT_JMPREL) should
3766 not be included in the overall relocs (DT_RELA).
3767 Therefore, we override the DT_RELASZ entry here to
3768 make it not include the JMPREL relocs. Since the
3769 linker script arranges for .rela.plt to follow all
3770 other relocation sections, we don't have to worry
3771 about changing the DT_RELA entry. */
f41345a7 3772 s = htab->elf.srelplt->output_section;
eea6121a 3773 dyn.d_un.d_val -= s->size;
a85d7ed0
NC		 3774 break;
3775 }
0451c93c
MS		 3776
3777 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3778 }
3779
3780 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3781 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3782 {
3783 /* fill in blueprint for plt 0 entry */
f41345a7 3784 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3785 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3786 /* Fixup relative address to start of GOT */
3787 bfd_put_32 (output_bfd,
f41345a7
AK		 3788 (htab->elf.sgotplt->output_section->vma +
3789 htab->elf.sgotplt->output_offset
3790 - htab->elf.splt->output_section->vma - 6)/2,
3791 htab->elf.splt->contents + 8);
a85d7ed0 3792 }
387f8054
MR		 3793 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3794 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3795 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3796 }
3797
f41345a7 3798 if (htab->elf.sgotplt)
a85d7ed0 3799 {
0451c93c 3800 /* Fill in the first three entries in the global offset table. */
f41345a7 3801 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3802 {
3803 bfd_put_64 (output_bfd,
3804 (sdyn == NULL ? (bfd_vma) 0
3805 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3806 htab->elf.sgotplt->contents);
0451c93c 3807 /* One entry for shared object struct ptr. */
f41345a7 3808 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3809 /* One entry for _dl_runtime_resolve. */
f41345a7 3810 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
0451c93c 3811 }
a85d7ed0 3812
f41345a7 3813 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3814 ->this_hdr.sh_entsize = 8;
3815 }
470b557a
AK		 3816
3817 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3818 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3819 {
3820 struct plt_entry *local_plt;
3821 Elf_Internal_Sym *isym;
3822 Elf_Internal_Shdr *symtab_hdr;
3823
3824 symtab_hdr = &elf_symtab_hdr (ibfd);
3825
3826 local_plt = elf_s390_local_plt (ibfd);
3827 if (local_plt != NULL)
3828 for (i = 0; i < symtab_hdr->sh_info; i++)
3829 {
3830 if (local_plt[i].plt.offset != (bfd_vma) -1)
3831 {
3832 asection *sec = local_plt[i].sec;
3833 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3834 if (isym == NULL)
3835 return FALSE;
3836
3837 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3838 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3839 local_plt[i].plt.offset,
3840 isym->st_value
3841 + sec->output_section->vma
3842 + sec->output_offset);
3843
3844 }
3845 }
3846 }
3847
b34976b6 3848 return TRUE;
a85d7ed0
NC		 3849}
3850
4c45e5c9
JJ		 3851/* Return address for Ith PLT stub in section PLT, for relocation REL
3852 or (bfd_vma) -1 if it should not be included. */
3853
3854static bfd_vma
3855elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3856 const arelent *rel ATTRIBUTE_UNUSED)
3857{
3858 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3859}
3860
643f7afb
AK		 3861/* Merge backend specific data from an object file to the output
3862 object file when linking. */
3863
3864static bfd_boolean
3865elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3866{
3867 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3868 return TRUE;
3869
3870 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
3871 return FALSE;
3872
3873 return TRUE;
3874}
3875
ae9a127f
NC		 3876/* Why was the hash table entry size definition changed from
3877 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3878 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3879
3880const struct elf_size_info s390_elf64_size_info =
3881{
3882 sizeof (Elf64_External_Ehdr),
3883 sizeof (Elf64_External_Phdr),
3884 sizeof (Elf64_External_Shdr),
3885 sizeof (Elf64_External_Rel),
3886 sizeof (Elf64_External_Rela),
3887 sizeof (Elf64_External_Sym),
3888 sizeof (Elf64_External_Dyn),
3889 sizeof (Elf_External_Note),
ae9a127f
NC		 3890 8, /* hash-table entry size. */
3891 1, /* internal relocations per external relocations. */
3892 64, /* arch_size. */
45d6a902 3893 3, /* log_file_align. */
a85d7ed0
NC		 3894 ELFCLASS64, EV_CURRENT,
3895 bfd_elf64_write_out_phdrs,
3896 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3897 bfd_elf64_checksum_contents,
a85d7ed0 3898 bfd_elf64_write_relocs,
73ff0d56 3899 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3900 bfd_elf64_swap_symbol_out,
3901 bfd_elf64_slurp_reloc_table,
3902 bfd_elf64_slurp_symbol_table,
3903 bfd_elf64_swap_dyn_in,
3904 bfd_elf64_swap_dyn_out,
947216bf
AM		 3905 bfd_elf64_swap_reloc_in,
3906 bfd_elf64_swap_reloc_out,
3907 bfd_elf64_swap_reloca_in,
3908 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3909};
3910
6d00b590 3911#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3912#define TARGET_BIG_NAME "elf64-s390"
3913#define ELF_ARCH bfd_arch_s390
ae95ffa6 3914#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3915#define ELF_MACHINE_CODE EM_S390
3916#define ELF_MACHINE_ALT1 EM_S390_OLD
3917#define ELF_MAXPAGESIZE 0x1000
3918
3919#define elf_backend_size_info s390_elf64_size_info
3920
3921#define elf_backend_can_gc_sections 1
51b64d56 3922#define elf_backend_can_refcount 1
a85d7ed0
NC		 3923#define elf_backend_want_got_plt 1
3924#define elf_backend_plt_readonly 1
3925#define elf_backend_want_plt_sym 0
3926#define elf_backend_got_header_size 24
b491616a 3927#define elf_backend_rela_normal 1
a85d7ed0
NC		 3928
3929#define elf_info_to_howto elf_s390_info_to_howto
3930
a85d7ed0
NC		 3931#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3932#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3933#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
643f7afb
AK		 3934#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3935#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 3936
3937#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3938#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 3939#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3940#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 3941#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3942#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3943#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3944#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3945#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3946#define elf_backend_relocate_section elf_s390_relocate_section
3947#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3948#define elf_backend_init_index_section _bfd_elf_init_1_index_section
4c45e5c9 3949#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3950#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 3951#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 3952
69fc87f1
MS		 3953#define bfd_elf64_mkobject elf_s390_mkobject
3954#define elf_backend_object_p elf_s390_object_p
a85d7ed0 3955
2c3fc389
NC		 3956/* Enable ELF64 archive functions. */
3957#define bfd_elf64_archive_functions
3958extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3959extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3960
3961#define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3962#define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3963#define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3964#define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3965#define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3966#define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3967#define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3968#define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3969#define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3970
a85d7ed0 3971#include "elf64-target.h"
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