]> Git Repo - binutils.git/blame - bfd/elf64-s390.c
projects / binutils.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Rename u.weakdef and make it a circular list
[binutils.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
2571583a 2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed Martin Schwidefsky ([email protected]).
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
b4cbbe8f 28#include "elf-s390.h"
e3e9290d 29#include <stdarg.h>
a85d7ed0
NC		 30
31/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
32 from smaller values. Start with zero, widen, *then* decrement. */
33#define MINUS_ONE (((bfd_vma)0) - 1)
34
2c3fc389
NC		 35static bfd_reloc_status_type
36s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
37 asection *, bfd *, char **);
38static bfd_reloc_status_type
39s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
40 asection *, bfd *, char **);
41
a85d7ed0
NC		 42/* The relocation "howto" table. */
43static reloc_howto_type elf_howto_table[] =
44{
45 HOWTO (R_390_NONE, /* type */
46 0, /* rightshift */
6346d5ca 47 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 48 0, /* bitsize */
b34976b6 49 FALSE, /* pc_relative */
a85d7ed0
NC		 50 0, /* bitpos */
51 complain_overflow_dont, /* complain_on_overflow */
52 bfd_elf_generic_reloc, /* special_function */
53 "R_390_NONE", /* name */
b34976b6 54 FALSE, /* partial_inplace */
a85d7ed0
NC		 55 0, /* src_mask */
56 0, /* dst_mask */
b34976b6
AM		 57 FALSE), /* pcrel_offset */
58
5236c819
MS		 59 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
61 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
62 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
63 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
65 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
67 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 69 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 70 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
71 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
75 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
77 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
79 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
81 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
83 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
85 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
87 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
89 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
93 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
95 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
97 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
99 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
100 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
101 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
103 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
105 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
107 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
109 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
111 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
113 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
115 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
116 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
117 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
119 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
123 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
125 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
127 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
129 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 131 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
133 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
135 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
136 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
137 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
138 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
140 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
141 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
142 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
143 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
145 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
146 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
148 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
149 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
151 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
152 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
153 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
154 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
155 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
156 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
157 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
159 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
161 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
163 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
164 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
bd1ea41b
MS		 165 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
166 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
167 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
169 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
170 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
171 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
172 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 173 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
fb798c50
AK		 175 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
177 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
178 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
179 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
181 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
182 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 183};
184
185/* GNU extension to record C++ vtable hierarchy. */
186static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 187 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 188static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 189 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		 190
191static reloc_howto_type *
2c3fc389
NC		 192elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
193 bfd_reloc_code_real_type code)
a85d7ed0 194{
0451c93c
MS		 195 switch (code)
196 {
197 case BFD_RELOC_NONE:
198 return &elf_howto_table[(int) R_390_NONE];
199 case BFD_RELOC_8:
200 return &elf_howto_table[(int) R_390_8];
201 case BFD_RELOC_390_12:
202 return &elf_howto_table[(int) R_390_12];
203 case BFD_RELOC_16:
204 return &elf_howto_table[(int) R_390_16];
205 case BFD_RELOC_32:
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_CTOR:
208 return &elf_howto_table[(int) R_390_32];
209 case BFD_RELOC_32_PCREL:
210 return &elf_howto_table[(int) R_390_PC32];
211 case BFD_RELOC_390_GOT12:
212 return &elf_howto_table[(int) R_390_GOT12];
213 case BFD_RELOC_32_GOT_PCREL:
214 return &elf_howto_table[(int) R_390_GOT32];
215 case BFD_RELOC_390_PLT32:
216 return &elf_howto_table[(int) R_390_PLT32];
217 case BFD_RELOC_390_COPY:
218 return &elf_howto_table[(int) R_390_COPY];
219 case BFD_RELOC_390_GLOB_DAT:
220 return &elf_howto_table[(int) R_390_GLOB_DAT];
221 case BFD_RELOC_390_JMP_SLOT:
222 return &elf_howto_table[(int) R_390_JMP_SLOT];
223 case BFD_RELOC_390_RELATIVE:
224 return &elf_howto_table[(int) R_390_RELATIVE];
225 case BFD_RELOC_32_GOTOFF:
5236c819 226 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 227 case BFD_RELOC_390_GOTPC:
228 return &elf_howto_table[(int) R_390_GOTPC];
229 case BFD_RELOC_390_GOT16:
230 return &elf_howto_table[(int) R_390_GOT16];
231 case BFD_RELOC_16_PCREL:
232 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 233 case BFD_RELOC_390_PC12DBL:
234 return &elf_howto_table[(int) R_390_PC12DBL];
235 case BFD_RELOC_390_PLT12DBL:
236 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 237 case BFD_RELOC_390_PC16DBL:
238 return &elf_howto_table[(int) R_390_PC16DBL];
239 case BFD_RELOC_390_PLT16DBL:
240 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 241 case BFD_RELOC_390_PC24DBL:
242 return &elf_howto_table[(int) R_390_PC24DBL];
243 case BFD_RELOC_390_PLT24DBL:
244 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS		 245 case BFD_RELOC_390_PC32DBL:
246 return &elf_howto_table[(int) R_390_PC32DBL];
247 case BFD_RELOC_390_PLT32DBL:
248 return &elf_howto_table[(int) R_390_PLT32DBL];
249 case BFD_RELOC_390_GOTPCDBL:
250 return &elf_howto_table[(int) R_390_GOTPCDBL];
251 case BFD_RELOC_64:
252 return &elf_howto_table[(int) R_390_64];
253 case BFD_RELOC_64_PCREL:
254 return &elf_howto_table[(int) R_390_PC64];
255 case BFD_RELOC_390_GOT64:
256 return &elf_howto_table[(int) R_390_GOT64];
257 case BFD_RELOC_390_PLT64:
258 return &elf_howto_table[(int) R_390_PLT64];
259 case BFD_RELOC_390_GOTENT:
260 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 261 case BFD_RELOC_16_GOTOFF:
262 return &elf_howto_table[(int) R_390_GOTOFF16];
263 case BFD_RELOC_390_GOTOFF64:
264 return &elf_howto_table[(int) R_390_GOTOFF64];
265 case BFD_RELOC_390_GOTPLT12:
266 return &elf_howto_table[(int) R_390_GOTPLT12];
267 case BFD_RELOC_390_GOTPLT16:
268 return &elf_howto_table[(int) R_390_GOTPLT16];
269 case BFD_RELOC_390_GOTPLT32:
270 return &elf_howto_table[(int) R_390_GOTPLT32];
271 case BFD_RELOC_390_GOTPLT64:
272 return &elf_howto_table[(int) R_390_GOTPLT64];
273 case BFD_RELOC_390_GOTPLTENT:
274 return &elf_howto_table[(int) R_390_GOTPLTENT];
275 case BFD_RELOC_390_PLTOFF16:
276 return &elf_howto_table[(int) R_390_PLTOFF16];
277 case BFD_RELOC_390_PLTOFF32:
278 return &elf_howto_table[(int) R_390_PLTOFF32];
279 case BFD_RELOC_390_PLTOFF64:
280 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 281 case BFD_RELOC_390_TLS_LOAD:
282 return &elf_howto_table[(int) R_390_TLS_LOAD];
283 case BFD_RELOC_390_TLS_GDCALL:
284 return &elf_howto_table[(int) R_390_TLS_GDCALL];
285 case BFD_RELOC_390_TLS_LDCALL:
286 return &elf_howto_table[(int) R_390_TLS_LDCALL];
287 case BFD_RELOC_390_TLS_GD64:
288 return &elf_howto_table[(int) R_390_TLS_GD64];
289 case BFD_RELOC_390_TLS_GOTIE12:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
291 case BFD_RELOC_390_TLS_GOTIE64:
292 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
293 case BFD_RELOC_390_TLS_LDM64:
294 return &elf_howto_table[(int) R_390_TLS_LDM64];
295 case BFD_RELOC_390_TLS_IE64:
296 return &elf_howto_table[(int) R_390_TLS_IE64];
297 case BFD_RELOC_390_TLS_IEENT:
298 return &elf_howto_table[(int) R_390_TLS_IEENT];
299 case BFD_RELOC_390_TLS_LE64:
300 return &elf_howto_table[(int) R_390_TLS_LE64];
301 case BFD_RELOC_390_TLS_LDO64:
302 return &elf_howto_table[(int) R_390_TLS_LDO64];
303 case BFD_RELOC_390_TLS_DTPMOD:
304 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
305 case BFD_RELOC_390_TLS_DTPOFF:
306 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
307 case BFD_RELOC_390_TLS_TPOFF:
308 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 309 case BFD_RELOC_390_20:
310 return &elf_howto_table[(int) R_390_20];
311 case BFD_RELOC_390_GOT20:
312 return &elf_howto_table[(int) R_390_GOT20];
313 case BFD_RELOC_390_GOTPLT20:
314 return &elf_howto_table[(int) R_390_GOTPLT20];
315 case BFD_RELOC_390_TLS_GOTIE20:
316 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 317 case BFD_RELOC_390_IRELATIVE:
318 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 319 case BFD_RELOC_VTABLE_INHERIT:
320 return &elf64_s390_vtinherit_howto;
321 case BFD_RELOC_VTABLE_ENTRY:
322 return &elf64_s390_vtentry_howto;
0451c93c
MS		 323 default:
324 break;
325 }
a85d7ed0
NC		 326 return 0;
327}
328
157090f7
AM		 329static reloc_howto_type *
330elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
331 const char *r_name)
332{
333 unsigned int i;
334
335 for (i = 0;
336 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
337 i++)
338 if (elf_howto_table[i].name != NULL
339 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
340 return &elf_howto_table[i];
341
0bc7245a
JK		 342 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
343 return &elf64_s390_vtinherit_howto;
344 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
345 return &elf64_s390_vtentry_howto;
157090f7
AM		 346
347 return NULL;
348}
349
a85d7ed0
NC		 350/* We need to use ELF64_R_TYPE so we have our own copy of this function,
351 and elf64-s390.c has its own copy. */
352
353static void
2c3fc389
NC		 354elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
355 arelent *cache_ptr,
356 Elf_Internal_Rela *dst)
a85d7ed0 357{
d0fb9a8d
JJ		 358 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
359 switch (r_type)
a85d7ed0
NC		 360 {
361 case R_390_GNU_VTINHERIT:
362 cache_ptr->howto = &elf64_s390_vtinherit_howto;
363 break;
364
365 case R_390_GNU_VTENTRY:
366 cache_ptr->howto = &elf64_s390_vtentry_howto;
367 break;
368
369 default:
d0fb9a8d
JJ		 370 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
371 {
695344c0 372 /* xgettext:c-format */
4eca0228
AM		 373 _bfd_error_handler (_("%B: invalid relocation type %d"),
374 abfd, (int) r_type);
d0fb9a8d
JJ		 375 r_type = R_390_NONE;
376 }
377 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 378 }
a85d7ed0
NC		 379}
380
69fc87f1
MS		 381/* A relocation function which doesn't do anything. */
382static bfd_reloc_status_type
2c3fc389
NC		 383s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
384 arelent *reloc_entry,
385 asymbol *symbol ATTRIBUTE_UNUSED,
386 void * data ATTRIBUTE_UNUSED,
387 asection *input_section,
388 bfd *output_bfd,
389 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 390{
391 if (output_bfd)
392 reloc_entry->address += input_section->output_offset;
393 return bfd_reloc_ok;
394}
395
bd1ea41b
MS		 396/* Handle the large displacement relocs. */
397static bfd_reloc_status_type
2c3fc389
NC		 398s390_elf_ldisp_reloc (bfd *abfd,
399 arelent *reloc_entry,
400 asymbol *symbol,
401 void * data,
402 asection *input_section,
403 bfd *output_bfd,
404 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 405{
406 reloc_howto_type *howto = reloc_entry->howto;
407 bfd_vma relocation;
408 bfd_vma insn;
409
410 if (output_bfd != (bfd *) NULL
411 && (symbol->flags & BSF_SECTION_SYM) == 0
412 && (! howto->partial_inplace
413 || reloc_entry->addend == 0))
414 {
415 reloc_entry->address += input_section->output_offset;
416 return bfd_reloc_ok;
417 }
418 if (output_bfd != NULL)
419 return bfd_reloc_continue;
420
07515404 421 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 422 return bfd_reloc_outofrange;
423
424 relocation = (symbol->value
425 + symbol->section->output_section->vma
426 + symbol->section->output_offset);
427 relocation += reloc_entry->addend;
428 if (howto->pc_relative)
429 {
430 relocation -= (input_section->output_section->vma
431 + input_section->output_offset);
432 relocation -= reloc_entry->address;
433 }
434
68ffbac6 435 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 436 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
437 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
438
439 if ((bfd_signed_vma) relocation < - 0x80000
440 || (bfd_signed_vma) relocation > 0x7ffff)
441 return bfd_reloc_overflow;
442 else
443 return bfd_reloc_ok;
444}
445
b34976b6 446static bfd_boolean
2c3fc389 447elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 448{
449 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 450 return TRUE;
a85d7ed0
NC		 451
452 return _bfd_elf_is_local_label_name (abfd, name);
453}
454
455/* Functions for the 390 ELF linker. */
456
457/* The name of the dynamic interpreter. This is put in the .interp
458 section. */
459
87049b0d 460#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 461
64285810
MS		 462/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
463 copying dynamic variables from a shared lib into an app's dynbss
464 section, and instead use a dynamic relocation to point into the
465 shared lib. */
466#define ELIMINATE_COPY_RELOCS 1
467
a85d7ed0
NC		 468/* The size in bytes of the first entry in the procedure linkage table. */
469#define PLT_FIRST_ENTRY_SIZE 32
470/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 471#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 472
473#define GOT_ENTRY_SIZE 8
474
470b557a
AK		 475#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
476
a85d7ed0
NC		 477/* The first three entries in a procedure linkage table are reserved,
478 and the initial contents are unimportant (we zero them out).
479 Subsequent entries look like this. See the SVR4 ABI 386
480 supplement to see how this works. */
481
482/* For the s390, simple addr offset can only be 0 - 4096.
483 To use the full 16777216 TB address space, several instructions
484 are needed to load an address in a register and execute
485 a branch( or just saving the address)
486
99c79b2e 487 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 488
489/* The first 3 words in the GOT are then reserved.
490 Word 0 is the address of the dynamic table.
491 Word 1 is a pointer to a structure describing the object
492 Word 2 is used to point to the loader entry address.
493
494 The code for PLT entries looks like this:
495
496 The GOT holds the address in the PLT to be executed.
497 The loader then gets:
3b67f094
MK		 498 48(15) = Pointer to the structure describing the object.
499 56(15) = Offset in symbol table
a85d7ed0
NC		 500 The loader must then find the module where the function is
501 and insert the address in the GOT.
502
503 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
504 LG 1,0(1) # 6 bytes Load address from GOT in r1
505 BCR 15,1 # 2 bytes Jump to address
506 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
507 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
508 BRCL 15,-x # 6 bytes Jump to start of PLT
a7e28bbe 509 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 510
511 Total = 32 bytes per PLT entry
512 Fixup at offset 2: relative address to GOT entry
513 Fixup at offset 22: relative branch to PLT0
a7e28bbe 514 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 515
a7e28bbe
AK		 516 A 32 bit offset into the symbol table is enough. It allows for
517 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
518 object (the main program, any shared library) is limited to 4GB in
519 size. Having a .rela.plt of 2GB would already make the .plt
520 section bigger than 8GB. */
a85d7ed0 521
9aa17453
AK		 522static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
523 {
524 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
525 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
526 0x07, 0xf1, /* br %r1 */
527 0x0d, 0x10, /* basr %r1,%r0 */
528 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
529 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
530 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
531 };
a85d7ed0
NC		 532
533/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 534 from R1 onto the stack at 56(15) and the loader object info
535 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 536
537/* The first entry in the PLT:
538
539 PLT0:
540 STG 1,56(15) # r1 contains the offset into the symbol table
541 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
542 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
543 LG 1,16(1) # get entry address of loader
544 BCR 15,1 # jump to loader
545
546 Fixup at offset 8: relative address to start of GOT. */
547
9aa17453
AK		 548static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
549 {
550 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
551 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
552 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
553 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
554 0x07, 0xf1, /* br %r1 */
555 0x07, 0x00, /* nopr %r0 */
556 0x07, 0x00, /* nopr %r0 */
557 0x07, 0x00 /* nopr %r0 */
558 };
a85d7ed0 559
a85d7ed0
NC		 560
561/* s390 ELF linker hash entry. */
562
563struct elf_s390_link_hash_entry
564{
0451c93c 565 struct elf_link_hash_entry elf;
a85d7ed0 566
0451c93c 567 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 568 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 569
570 /* Number of GOTPLT references for a function. */
571 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 572
573#define GOT_UNKNOWN 0
574#define GOT_NORMAL 1
575#define GOT_TLS_GD 2
576#define GOT_TLS_IE 3
577#define GOT_TLS_IE_NLT 3
578 unsigned char tls_type;
470b557a
AK		 579
580 /* For pointer equality reasons we might need to change the symbol
581 type from STT_GNU_IFUNC to STT_FUNC together with its value and
582 section entry. So after alloc_dynrelocs only these values should
583 be used. In order to check whether a symbol is IFUNC use
584 s390_is_ifunc_symbol_p. */
585 bfd_vma ifunc_resolver_address;
586 asection *ifunc_resolver_section;
a85d7ed0
NC		 587};
588
69fc87f1
MS		 589#define elf_s390_hash_entry(ent) \
590 ((struct elf_s390_link_hash_entry *)(ent))
591
470b557a
AK		 592/* This structure represents an entry in the local PLT list needed for
593 local IFUNC symbols. */
594struct plt_entry
595{
596 /* The section of the local symbol.
597 Set in relocate_section and used in finish_dynamic_sections. */
598 asection *sec;
599
600 union
601 {
602 bfd_signed_vma refcount;
603 bfd_vma offset;
604 } plt;
605};
606
0ffa91dd
NC		 607/* NOTE: Keep this structure in sync with
608 the one declared in elf32-s390.c. */
69fc87f1
MS		 609struct elf_s390_obj_tdata
610{
611 struct elf_obj_tdata root;
612
470b557a
AK		 613 /* A local PLT is needed for ifunc symbols. */
614 struct plt_entry *local_plt;
615
0ffa91dd 616 /* TLS type for each local got entry. */
69fc87f1
MS		 617 char *local_got_tls_type;
618};
619
620#define elf_s390_tdata(abfd) \
621 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
622
470b557a
AK		 623#define elf_s390_local_plt(abfd) \
624 (elf_s390_tdata (abfd)->local_plt)
625
69fc87f1
MS		 626#define elf_s390_local_got_tls_type(abfd) \
627 (elf_s390_tdata (abfd)->local_got_tls_type)
628
0ffa91dd
NC		 629#define is_s390_elf(bfd) \
630 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
631 && elf_tdata (bfd) != NULL \
4dfe6ac6 632 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 633
69fc87f1 634static bfd_boolean
62d7a5f6 635elf_s390_mkobject (bfd *abfd)
69fc87f1 636{
0ffa91dd 637 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 638 S390_ELF_DATA);
69fc87f1
MS		 639}
640
641static bfd_boolean
2c3fc389 642elf_s390_object_p (bfd *abfd)
69fc87f1 643{
69fc87f1
MS		 644 /* Set the right machine number for an s390 elf32 file. */
645 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
646}
647
a85d7ed0
NC		 648/* s390 ELF linker hash table. */
649
650struct elf_s390_link_hash_table
651{
0451c93c 652 struct elf_link_hash_table elf;
a85d7ed0 653
0451c93c 654 /* Short-cuts to get to dynamic linker sections. */
470b557a 655 asection *irelifunc;
ec338859 656
69fc87f1
MS		 657 union {
658 bfd_signed_vma refcount;
659 bfd_vma offset;
660 } tls_ldm_got;
661
87d72d41
AM		 662 /* Small local sym cache. */
663 struct sym_cache sym_cache;
b4cbbe8f
AK		 664
665 /* Options passed from the linker. */
666 struct s390_elf_params *params;
0451c93c 667};
a85d7ed0
NC		 668
669/* Get the s390 ELF linker hash table from a link_info structure. */
670
ceada896
AA		 671#define elf_s390_hash_table(p) \
672 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
673 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 674
470b557a
AK		 675#define ELF64 1
676#include "elf-s390-common.c"
677
a85d7ed0
NC		 678/* Create an entry in an s390 ELF linker hash table. */
679
680static struct bfd_hash_entry *
2c3fc389
NC		 681link_hash_newfunc (struct bfd_hash_entry *entry,
682 struct bfd_hash_table *table,
683 const char *string)
a85d7ed0 684{
a85d7ed0
NC		 685 /* Allocate the structure if it has not already been allocated by a
686 subclass. */
0451c93c
MS		 687 if (entry == NULL)
688 {
689 entry = bfd_hash_allocate (table,
690 sizeof (struct elf_s390_link_hash_entry));
691 if (entry == NULL)
692 return entry;
693 }
a85d7ed0
NC		 694
695 /* Call the allocation method of the superclass. */
0451c93c
MS		 696 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
697 if (entry != NULL)
a85d7ed0 698 {
0451c93c
MS		 699 struct elf_s390_link_hash_entry *eh;
700
701 eh = (struct elf_s390_link_hash_entry *) entry;
702 eh->dyn_relocs = NULL;
5236c819 703 eh->gotplt_refcount = 0;
69fc87f1 704 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 705 eh->ifunc_resolver_address = 0;
706 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 707 }
708
0451c93c 709 return entry;
a85d7ed0
NC		 710}
711
712/* Create an s390 ELF linker hash table. */
713
714static struct bfd_link_hash_table *
2c3fc389 715elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 716{
717 struct elf_s390_link_hash_table *ret;
dc810e39 718 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 719
7bf52ea2 720 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 721 if (ret == NULL)
a85d7ed0
NC		 722 return NULL;
723
66eb6687 724 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 725 sizeof (struct elf_s390_link_hash_entry),
726 S390_ELF_DATA))
a85d7ed0 727 {
e2d34d7d 728 free (ret);
a85d7ed0
NC		 729 return NULL;
730 }
731
0451c93c
MS		 732 return &ret->elf.root;
733}
734
0451c93c
MS		 735/* Copy the extra info we tack onto an elf_link_hash_entry. */
736
737static void
2c3fc389
NC		 738elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
739 struct elf_link_hash_entry *dir,
740 struct elf_link_hash_entry *ind)
0451c93c
MS		 741{
742 struct elf_s390_link_hash_entry *edir, *eind;
743
744 edir = (struct elf_s390_link_hash_entry *) dir;
745 eind = (struct elf_s390_link_hash_entry *) ind;
746
747 if (eind->dyn_relocs != NULL)
748 {
749 if (edir->dyn_relocs != NULL)
750 {
00d8c7a9
AK		 751 struct elf_dyn_relocs **pp;
752 struct elf_dyn_relocs *p;
0451c93c 753
fcfa13d2 754 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 755 list. Merge any entries against the same section. */
756 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
757 {
00d8c7a9 758 struct elf_dyn_relocs *q;
0451c93c
MS		 759
760 for (q = edir->dyn_relocs; q != NULL; q = q->next)
761 if (q->sec == p->sec)
762 {
763 q->pc_count += p->pc_count;
764 q->count += p->count;
765 *pp = p->next;
766 break;
767 }
768 if (q == NULL)
769 pp = &p->next;
770 }
771 *pp = edir->dyn_relocs;
772 }
773
774 edir->dyn_relocs = eind->dyn_relocs;
775 eind->dyn_relocs = NULL;
776 }
777
69fc87f1
MS		 778 if (ind->root.type == bfd_link_hash_indirect
779 && dir->got.refcount <= 0)
780 {
781 edir->tls_type = eind->tls_type;
782 eind->tls_type = GOT_UNKNOWN;
783 }
784
64285810
MS		 785 if (ELIMINATE_COPY_RELOCS
786 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 787 && dir->dynamic_adjusted)
788 {
789 /* If called to transfer flags for a weakdef during processing
790 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
791 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 792 if (dir->versioned != versioned_hidden)
793 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 794 dir->ref_regular |= ind->ref_regular;
795 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
796 dir->needs_plt |= ind->needs_plt;
797 }
64285810 798 else
fcfa13d2 799 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 800}
a85d7ed0 801
69fc87f1 802static int
2c3fc389
NC		 803elf_s390_tls_transition (struct bfd_link_info *info,
804 int r_type,
805 int is_local)
69fc87f1 806{
0e1862bb 807 if (bfd_link_pic (info))
69fc87f1
MS		 808 return r_type;
809
810 switch (r_type)
811 {
812 case R_390_TLS_GD64:
813 case R_390_TLS_IE64:
814 if (is_local)
815 return R_390_TLS_LE64;
816 return R_390_TLS_IE64;
817 case R_390_TLS_GOTIE64:
818 if (is_local)
819 return R_390_TLS_LE64;
820 return R_390_TLS_GOTIE64;
821 case R_390_TLS_LDM64:
822 return R_390_TLS_LE64;
823 }
824
825 return r_type;
826}
827
a85d7ed0
NC		 828/* Look through the relocs for a section during the first phase, and
829 allocate space in the global offset table or procedure linkage
830 table. */
831
b34976b6 832static bfd_boolean
4dfe6ac6
NC		 833elf_s390_check_relocs (bfd *abfd,
834 struct bfd_link_info *info,
835 asection *sec,
836 const Elf_Internal_Rela *relocs)
a85d7ed0 837{
0451c93c 838 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 839 Elf_Internal_Shdr *symtab_hdr;
840 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 841 const Elf_Internal_Rela *rel;
842 const Elf_Internal_Rela *rel_end;
a85d7ed0 843 asection *sreloc;
5236c819 844 bfd_signed_vma *local_got_refcounts;
69fc87f1 845 int tls_type, old_tls_type;
a85d7ed0 846
0e1862bb 847 if (bfd_link_relocatable (info))
b34976b6 848 return TRUE;
a85d7ed0 849
0ffa91dd
NC		 850 BFD_ASSERT (is_s390_elf (abfd));
851
0451c93c 852 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 853 if (htab == NULL)
854 return FALSE;
855
0ffa91dd 856 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 857 sym_hashes = elf_sym_hashes (abfd);
5236c819 858 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 859
a85d7ed0
NC		 860 sreloc = NULL;
861
862 rel_end = relocs + sec->reloc_count;
863 for (rel = relocs; rel < rel_end; rel++)
864 {
69fc87f1 865 unsigned int r_type;
d42c267e 866 unsigned int r_symndx;
a85d7ed0 867 struct elf_link_hash_entry *h;
470b557a 868 Elf_Internal_Sym *isym;
a85d7ed0
NC		 869
870 r_symndx = ELF64_R_SYM (rel->r_info);
871
0451c93c
MS		 872 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
873 {
695344c0 874 /* xgettext:c-format */
4eca0228
AM		 875 _bfd_error_handler (_("%B: bad symbol index: %d"),
876 abfd, r_symndx);
b34976b6 877 return FALSE;
0451c93c
MS		 878 }
879
a85d7ed0 880 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 881 {
882 /* A local symbol. */
883 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
884 abfd, r_symndx);
885 if (isym == NULL)
886 return FALSE;
887
888 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
889 {
890 struct plt_entry *plt;
891
0cb79d69
AK		 892 if (htab->elf.dynobj == NULL)
893 htab->elf.dynobj = abfd;
894
470b557a
AK		 895 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
896 return FALSE;
897
898 if (local_got_refcounts == NULL)
899 {
900 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
901 return FALSE;
902 local_got_refcounts = elf_local_got_refcounts (abfd);
903 }
904 plt = elf_s390_local_plt (abfd);
905 plt[r_symndx].plt.refcount++;
906 }
907 h = NULL;
908 }
a85d7ed0 909 else
973a3492
L		 910 {
911 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
912 while (h->root.type == bfd_link_hash_indirect
913 || h->root.type == bfd_link_hash_warning)
914 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 915
916 /* PR15323, ref flags aren't set for references in the same
917 object. */
bc4e12de 918 h->root.non_ir_ref_regular = 1;
973a3492 919 }
a85d7ed0 920
5236c819
MS		 921 /* Create got section and local_got_refcounts array if they
922 are needed. */
69fc87f1
MS		 923 r_type = elf_s390_tls_transition (info,
924 ELF64_R_TYPE (rel->r_info),
925 h == NULL);
926 switch (r_type)
a85d7ed0
NC		 927 {
928 case R_390_GOT12:
947216bf 929 case R_390_GOT16:
bd1ea41b 930 case R_390_GOT20:
a85d7ed0
NC		 931 case R_390_GOT32:
932 case R_390_GOT64:
933 case R_390_GOTENT:
5236c819
MS		 934 case R_390_GOTPLT12:
935 case R_390_GOTPLT16:
bd1ea41b 936 case R_390_GOTPLT20:
5236c819
MS		 937 case R_390_GOTPLT32:
938 case R_390_GOTPLT64:
939 case R_390_GOTPLTENT:
69fc87f1
MS		 940 case R_390_TLS_GD64:
941 case R_390_TLS_GOTIE12:
bd1ea41b 942 case R_390_TLS_GOTIE20:
69fc87f1
MS		 943 case R_390_TLS_GOTIE64:
944 case R_390_TLS_IEENT:
945 case R_390_TLS_IE64:
946 case R_390_TLS_LDM64:
5236c819
MS		 947 if (h == NULL
948 && local_got_refcounts == NULL)
a85d7ed0 949 {
470b557a 950 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 951 return FALSE;
470b557a 952 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 953 }
470b557a 954
5236c819
MS		 955 /* Fall through. */
956 case R_390_GOTOFF16:
957 case R_390_GOTOFF32:
958 case R_390_GOTOFF64:
0451c93c
MS		 959 case R_390_GOTPC:
960 case R_390_GOTPCDBL:
f41345a7 961 if (htab->elf.sgot == NULL)
0451c93c
MS		 962 {
963 if (htab->elf.dynobj == NULL)
964 htab->elf.dynobj = abfd;
ce558b89 965 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 966 return FALSE;
0451c93c 967 }
5236c819
MS		 968 }
969
470b557a
AK		 970 if (h != NULL)
971 {
972 if (htab->elf.dynobj == NULL)
973 htab->elf.dynobj = abfd;
974 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
975 return FALSE;
976
977 /* Make sure an IFUNC symbol defined in a non-shared object
978 always gets a PLT slot. */
979 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
980 {
981 /* The symbol is called by the dynamic loader in order
982 to resolve the relocation. So it is in fact also
983 referenced. */
984 h->ref_regular = 1;
985 h->needs_plt = 1;
986 }
987 }
988
69fc87f1 989 switch (r_type)
5236c819 990 {
5236c819
MS		 991 case R_390_GOTPC:
992 case R_390_GOTPCDBL:
470b557a
AK		 993 /* These relocs do not need a GOT slot. They just load the
994 GOT pointer itself or address something else relative to
995 the GOT. Since the GOT pointer has been set up above we
996 are done. */
0451c93c 997 break;
d47b13e0
AK		 998 case R_390_GOTOFF16:
999 case R_390_GOTOFF32:
1000 case R_390_GOTOFF64:
1001 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1002 break;
1a0670f3 1003 /* Fall through. */
ec338859 1004
fb798c50 1005 case R_390_PLT12DBL:
947216bf 1006 case R_390_PLT16DBL:
fb798c50 1007 case R_390_PLT24DBL:
a85d7ed0
NC		 1008 case R_390_PLT32:
1009 case R_390_PLT32DBL:
1010 case R_390_PLT64:
5236c819
MS		 1011 case R_390_PLTOFF16:
1012 case R_390_PLTOFF32:
1013 case R_390_PLTOFF64:
a85d7ed0 1014 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1015 actually build the entry in adjust_dynamic_symbol,
1016 because this might be a case of linking PIC code which is
1017 never referenced by a dynamic object, in which case we
1018 don't need to generate a procedure linkage table entry
1019 after all. */
ec338859 1020
a85d7ed0 1021 /* If this is a local symbol, we resolve it directly without
947216bf 1022 creating a procedure linkage table entry. */
5236c819
MS		 1023 if (h != NULL)
1024 {
f5385ebf 1025 h->needs_plt = 1;
5236c819
MS		 1026 h->plt.refcount += 1;
1027 }
1028 break;
ec338859 1029
5236c819
MS		 1030 case R_390_GOTPLT12:
1031 case R_390_GOTPLT16:
bd1ea41b 1032 case R_390_GOTPLT20:
5236c819
MS		 1033 case R_390_GOTPLT32:
1034 case R_390_GOTPLT64:
1035 case R_390_GOTPLTENT:
1036 /* This symbol requires either a procedure linkage table entry
1037 or an entry in the local got. We actually build the entry
1038 in adjust_dynamic_symbol because whether this is really a
1039 global reference can change and with it the fact if we have
1040 to create a plt entry or a local got entry. To be able to
1041 make a once global symbol a local one we have to keep track
1042 of the number of gotplt references that exist for this
1043 symbol. */
1044 if (h != NULL)
1045 {
1046 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1047 h->needs_plt = 1;
5236c819
MS		 1048 h->plt.refcount += 1;
1049 }
69fc87f1
MS		 1050 else
1051 local_got_refcounts[r_symndx] += 1;
1052 break;
1053
1054 case R_390_TLS_LDM64:
1055 htab->tls_ldm_got.refcount += 1;
1056 break;
1057
1058 case R_390_TLS_IE64:
1059 case R_390_TLS_GOTIE12:
bd1ea41b 1060 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1061 case R_390_TLS_GOTIE64:
1062 case R_390_TLS_IEENT:
0e1862bb 1063 if (bfd_link_pic (info))
69fc87f1
MS		 1064 info->flags |= DF_STATIC_TLS;
1065 /* Fall through */
1066
1067 case R_390_GOT12:
26e41594 1068 case R_390_GOT16:
bd1ea41b 1069 case R_390_GOT20:
69fc87f1
MS		 1070 case R_390_GOT32:
1071 case R_390_GOT64:
1072 case R_390_GOTENT:
1073 case R_390_TLS_GD64:
1074 /* This symbol requires a global offset table entry. */
1075 switch (r_type)
1076 {
1077 default:
1078 case R_390_GOT12:
1079 case R_390_GOT16:
bd1ea41b 1080 case R_390_GOT20:
69fc87f1
MS		 1081 case R_390_GOT32:
1082 case R_390_GOTENT:
1083 tls_type = GOT_NORMAL;
1084 break;
1085 case R_390_TLS_GD64:
1086 tls_type = GOT_TLS_GD;
1087 break;
1088 case R_390_TLS_IE64:
1089 case R_390_TLS_GOTIE64:
1090 tls_type = GOT_TLS_IE;
1091 break;
1092 case R_390_TLS_GOTIE12:
bd1ea41b 1093 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1094 case R_390_TLS_IEENT:
1095 tls_type = GOT_TLS_IE_NLT;
1096 break;
1097 }
1098
1099 if (h != NULL)
1100 {
1101 h->got.refcount += 1;
1102 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1103 }
5236c819
MS		 1104 else
1105 {
1106 local_got_refcounts[r_symndx] += 1;
69fc87f1 1107 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1108 }
69fc87f1
MS		 1109 /* If a TLS symbol is accessed using IE at least once,
1110 there is no point to use dynamic model for it. */
1111 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1112 {
1113 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1114 {
4eca0228 1115 _bfd_error_handler
695344c0 1116 /* xgettext:c-format */
d003868e
AM		 1117 (_("%B: `%s' accessed both as normal and thread local symbol"),
1118 abfd, h->root.root.string);
69fc87f1
MS		 1119 return FALSE;
1120 }
1121 if (old_tls_type > tls_type)
1122 tls_type = old_tls_type;
1123 }
1124
1125 if (old_tls_type != tls_type)
1126 {
1127 if (h != NULL)
1128 elf_s390_hash_entry (h)->tls_type = tls_type;
1129 else
1130 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1131 }
1132
1133 if (r_type != R_390_TLS_IE64)
1134 break;
1135 /* Fall through */
1136
1137 case R_390_TLS_LE64:
e00d879a
AK		 1138 /* For static linking and executables this reloc will be
1139 calculated at linktime otherwise a TLS_TPOFF runtime
1140 reloc will be generated. */
0e1862bb 1141 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1142 break;
1143
0e1862bb 1144 if (!bfd_link_pic (info))
69fc87f1
MS		 1145 break;
1146 info->flags |= DF_STATIC_TLS;
1147 /* Fall through */
ec338859 1148
947216bf
AM		 1149 case R_390_8:
1150 case R_390_16:
a85d7ed0
NC		 1151 case R_390_32:
1152 case R_390_64:
fb798c50 1153 case R_390_PC12DBL:
947216bf
AM		 1154 case R_390_PC16:
1155 case R_390_PC16DBL:
fb798c50 1156 case R_390_PC24DBL:
a85d7ed0
NC		 1157 case R_390_PC32:
1158 case R_390_PC32DBL:
1159 case R_390_PC64:
99ba5125 1160 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1161 {
1162 /* If this reloc is in a read-only section, we might
1163 need a copy reloc. We can't check reliably at this
1164 stage whether the section is read-only, as input
1165 sections have not yet been mapped to output sections.
1166 Tentatively set the flag for now, and correct in
1167 adjust_dynamic_symbol. */
f5385ebf 1168 h->non_got_ref = 1;
ec338859 1169
0e1862bb 1170 if (!bfd_link_pic (info))
470b557a
AK		 1171 {
1172 /* We may need a .plt entry if the function this reloc
1173 refers to is in a shared lib. */
1174 h->plt.refcount += 1;
1175 }
0451c93c 1176 }
ec338859 1177
a85d7ed0 1178 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1179 against a global symbol, or a non PC relative reloc
1180 against a local symbol, then we need to copy the reloc
1181 into the shared library. However, if we are linking with
1182 -Bsymbolic, we do not need to copy a reloc against a
1183 global symbol which is defined in an object we are
1184 including in the link (i.e., DEF_REGULAR is set). At
1185 this point we have not seen all the input files, so it is
1186 possible that DEF_REGULAR is not set now but will be set
1187 later (it is never cleared). In case of a weak definition,
1188 DEF_REGULAR may be cleared later by a strong definition in
1189 a shared library. We account for that possibility below by
1190 storing information in the relocs_copied field of the hash
1191 table entry. A similar situation occurs when creating
1192 shared libraries and symbol visibility changes render the
1193 symbol local.
1194
1195 If on the other hand, we are creating an executable, we
1196 may need to keep relocations for symbols satisfied by a
1197 dynamic library if we manage to avoid copy relocs for the
1198 symbol. */
0e1862bb 1199 if ((bfd_link_pic (info)
0451c93c
MS		 1200 && (sec->flags & SEC_ALLOC) != 0
1201 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1202 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1203 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1204 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1205 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1206 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1207 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1208 || (h != NULL
8c21ca21 1209 && (! SYMBOLIC_BIND (info, h)
0451c93c 1210 || h->root.type == bfd_link_hash_defweak
f5385ebf 1211 || !h->def_regular))))
64285810 1212 || (ELIMINATE_COPY_RELOCS
0e1862bb 1213 && !bfd_link_pic (info)
0451c93c
MS		 1214 && (sec->flags & SEC_ALLOC) != 0
1215 && h != NULL
1216 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1217 || !h->def_regular)))
a85d7ed0 1218 {
00d8c7a9
AK		 1219 struct elf_dyn_relocs *p;
1220 struct elf_dyn_relocs **head;
ec338859 1221
0451c93c
MS		 1222 /* We must copy these reloc types into the output file.
1223 Create a reloc section in dynobj and make room for
1224 this reloc. */
a85d7ed0
NC		 1225 if (sreloc == NULL)
1226 {
440e9cd2
AK		 1227 if (htab->elf.dynobj == NULL)
1228 htab->elf.dynobj = abfd;
1229
83bac4b0
NC		 1230 sreloc = _bfd_elf_make_dynamic_reloc_section
1231 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1232
a85d7ed0 1233 if (sreloc == NULL)
83bac4b0 1234 return FALSE;
a85d7ed0 1235 }
ec338859 1236
0451c93c
MS		 1237 /* If this is a global symbol, we count the number of
1238 relocations we need for this symbol. */
1239 if (h != NULL)
a85d7ed0 1240 {
ec338859 1241 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1242 }
1243 else
1244 {
ec338859
AM		 1245 /* Track dynamic relocs needed for local syms too.
1246 We really need local syms available to do this
1247 easily. Oh well. */
ec338859 1248 asection *s;
6edfbbad
DJ		 1249 void *vpp;
1250
87d72d41
AM		 1251 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1252 abfd, r_symndx);
1253 if (isym == NULL)
b34976b6 1254 return FALSE;
ec338859 1255
87d72d41
AM		 1256 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1257 if (s == NULL)
1258 s = sec;
1259
6edfbbad 1260 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1261 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1262 }
1263
1264 p = *head;
1265 if (p == NULL || p->sec != sec)
1266 {
1267 bfd_size_type amt = sizeof *p;
00d8c7a9 1268 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1269 bfd_alloc (htab->elf.dynobj, amt));
1270 if (p == NULL)
b34976b6 1271 return FALSE;
ec338859
AM		 1272 p->next = *head;
1273 *head = p;
1274 p->sec = sec;
1275 p->count = 0;
1276 p->pc_count = 0;
a85d7ed0 1277 }
ec338859
AM		 1278
1279 p->count += 1;
1280 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1281 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1282 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1283 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1284 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1285 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1286 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1287 p->pc_count += 1;
a85d7ed0 1288 }
a85d7ed0 1289 break;
ec338859 1290
a85d7ed0
NC		 1291 /* This relocation describes the C++ object vtable hierarchy.
1292 Reconstruct it for later use during GC. */
947216bf 1293 case R_390_GNU_VTINHERIT:
c152c796 1294 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1295 return FALSE;
947216bf 1296 break;
ec338859 1297
a85d7ed0
NC		 1298 /* This relocation describes which C++ vtable entries are actually
1299 used. Record for later use during GC. */
947216bf 1300 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1301 BFD_ASSERT (h != NULL);
1302 if (h != NULL
1303 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1304 return FALSE;
947216bf 1305 break;
ec338859 1306
a85d7ed0
NC		 1307 default:
1308 break;
1309 }
1310 }
1311
b34976b6 1312 return TRUE;
a85d7ed0
NC		 1313}
1314
1315/* Return the section that should be marked against GC for a given
1316 relocation. */
1317
1318static asection *
07adf181
AM		 1319elf_s390_gc_mark_hook (asection *sec,
1320 struct bfd_link_info *info,
1321 Elf_Internal_Rela *rel,
1322 struct elf_link_hash_entry *h,
1323 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1324{
1325 if (h != NULL)
07adf181
AM		 1326 switch (ELF64_R_TYPE (rel->r_info))
1327 {
1328 case R_390_GNU_VTINHERIT:
1329 case R_390_GNU_VTENTRY:
1330 return NULL;
1331 }
1332
1333 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1334}
1335
5236c819
MS		 1336/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1337 entry but we found we will not create any. Called when we find we will
1338 not have any PLT for this symbol, by for example
1339 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1340 or elf_s390_size_dynamic_sections if no dynamic sections will be
1341 created (we're only linking static objects). */
1342
1343static void
2c3fc389 1344elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1345{
1346 if (h->elf.root.type == bfd_link_hash_warning)
1347 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1348
1349 if (h->gotplt_refcount <= 0)
1350 return;
1351
1352 /* We simply add the number of gotplt references to the number
1353 * of got references for this symbol. */
1354 h->elf.got.refcount += h->gotplt_refcount;
1355 h->gotplt_refcount = -1;
1356}
1357
a85d7ed0
NC		 1358/* Adjust a symbol defined by a dynamic object and referenced by a
1359 regular object. The current definition is in some section of the
1360 dynamic object, but we're not including those sections. We have to
1361 change the definition to something the rest of the link can
1362 understand. */
1363
b34976b6 1364static bfd_boolean
4dfe6ac6
NC		 1365elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1366 struct elf_link_hash_entry *h)
a85d7ed0 1367{
0451c93c 1368 struct elf_s390_link_hash_table *htab;
5474d94f 1369 asection *s, *srel;
a85d7ed0 1370
470b557a
AK		 1371 /* STT_GNU_IFUNC symbol must go through PLT. */
1372 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1373 {
1374 /* All local STT_GNU_IFUNC references must be treated as local
1375 calls via local PLT. */
1376 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1377 {
1378 bfd_size_type pc_count = 0, count = 0;
1379 struct elf_dyn_relocs **pp;
1380 struct elf_s390_link_hash_entry *eh;
1381 struct elf_dyn_relocs *p;
1382
1383 eh = (struct elf_s390_link_hash_entry *) h;
1384 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1385 {
1386 pc_count += p->pc_count;
1387 p->count -= p->pc_count;
1388 p->pc_count = 0;
1389 count += p->count;
1390 if (p->count == 0)
1391 *pp = p->next;
1392 else
1393 pp = &p->next;
1394 }
1395
1396 if (pc_count || count)
1397 {
1398 h->needs_plt = 1;
1399 h->non_got_ref = 1;
1400 if (h->plt.refcount <= 0)
1401 h->plt.refcount = 1;
1402 else
1403 h->plt.refcount += 1;
1404 }
1405 }
1406
1407 if (h->plt.refcount <= 0)
1408 {
1409 h->plt.offset = (bfd_vma) -1;
1410 h->needs_plt = 0;
1411 }
1412 return TRUE;
1413 }
470b557a 1414
a85d7ed0
NC		 1415 /* If this is a function, put it in the procedure linkage table. We
1416 will fill in the contents of the procedure linkage table later
cedb70c5 1417 (although we could actually do it here). */
a85d7ed0 1418 if (h->type == STT_FUNC
f5385ebf 1419 || h->needs_plt)
a85d7ed0 1420 {
0451c93c 1421 if (h->plt.refcount <= 0
8c21ca21
AK		 1422 || SYMBOL_CALLS_LOCAL (info, h)
1423 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1424 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1425 {
1426 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1427 file, but the symbol was never referred to by a dynamic
1428 object, or if all references were garbage collected. In
0451c93c
MS		 1429 such a case, we don't actually need to build a procedure
1430 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1431 h->plt.offset = (bfd_vma) -1;
f5385ebf 1432 h->needs_plt = 0;
5236c819 1433 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1434 }
1435
b34976b6 1436 return TRUE;
a85d7ed0 1437 }
bbd7ec4a 1438 else
0451c93c
MS		 1439 /* It's possible that we incorrectly decided a .plt reloc was
1440 needed for an R_390_PC32 reloc to a non-function sym in
1441 check_relocs. We can't decide accurately between function and
1442 non-function syms in check-relocs; Objects loaded later in
1443 the link may change h->type. So fix it now. */
bbd7ec4a 1444 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1445
1446 /* If this is a weak symbol, and there is a real definition, the
1447 processor independent code will have arranged for us to see the
1448 real definition first, and we can just use the same value. */
60d67dc8 1449 if (h->is_weakalias)
a85d7ed0 1450 {
60d67dc8
AM		 1451 struct elf_link_hash_entry *def = weakdef (h);
1452 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1453 h->root.u.def.section = def->root.u.def.section;
1454 h->root.u.def.value = def->root.u.def.value;
64285810 1455 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1456 h->non_got_ref = def->non_got_ref;
b34976b6 1457 return TRUE;
a85d7ed0
NC		 1458 }
1459
1460 /* This is a reference to a symbol defined by a dynamic object which
1461 is not a function. */
1462
1463 /* If we are creating a shared library, we must presume that the
1464 only references to the symbol are via the global offset table.
1465 For such cases we need not do anything here; the relocations will
1466 be handled correctly by relocate_section. */
0e1862bb 1467 if (bfd_link_pic (info))
b34976b6 1468 return TRUE;
a85d7ed0
NC		 1469
1470 /* If there are no references to this symbol that do not use the
1471 GOT, we don't need to generate a copy reloc. */
f5385ebf 1472 if (!h->non_got_ref)
b34976b6 1473 return TRUE;
a85d7ed0 1474
0451c93c
MS		 1475 /* If -z nocopyreloc was given, we won't generate them either. */
1476 if (info->nocopyreloc)
1477 {
f5385ebf 1478 h->non_got_ref = 0;
b34976b6 1479 return TRUE;
0451c93c
MS		 1480 }
1481
64285810 1482 if (ELIMINATE_COPY_RELOCS)
0451c93c 1483 {
64285810 1484 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1485 struct elf_dyn_relocs *p;
0451c93c 1486
64285810
MS		 1487 eh = (struct elf_s390_link_hash_entry *) h;
1488 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1489 {
1490 s = p->sec->output_section;
1491 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1492 break;
1493 }
1494
1495 /* If we didn't find any dynamic relocs in read-only sections, then
1496 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1497 if (p == NULL)
1498 {
f5385ebf 1499 h->non_got_ref = 0;
64285810
MS		 1500 return TRUE;
1501 }
0451c93c
MS		 1502 }
1503
a85d7ed0
NC		 1504 /* We must allocate the symbol in our .dynbss section, which will
1505 become part of the .bss section of the executable. There will be
1506 an entry for this symbol in the .dynsym section. The dynamic
1507 object will contain position independent code, so all references
1508 from the dynamic object to this symbol will go through the global
1509 offset table. The dynamic linker will use the .dynsym entry to
1510 determine the address it must put in the global offset table, so
1511 both the dynamic object and the regular object will refer to the
1512 same memory location for the variable. */
1513
0451c93c 1514 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1515 if (htab == NULL)
1516 return FALSE;
a85d7ed0 1517
0451c93c
MS		 1518 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1519 copy the initial value out of the dynamic object and into the
1520 runtime process image. */
5474d94f
AM		 1521 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1522 {
1523 s = htab->elf.sdynrelro;
1524 srel = htab->elf.sreldynrelro;
1525 }
1526 else
1527 {
1528 s = htab->elf.sdynbss;
1529 srel = htab->elf.srelbss;
1530 }
1d7e9d18 1531 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1532 {
5474d94f 1533 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1534 h->needs_copy = 1;
a85d7ed0
NC		 1535 }
1536
6cabe1ea 1537 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1538}
1539
0451c93c
MS		 1540/* Allocate space in .plt, .got and associated reloc sections for
1541 dynamic relocs. */
1542
b34976b6 1543static bfd_boolean
4dfe6ac6
NC		 1544allocate_dynrelocs (struct elf_link_hash_entry *h,
1545 void * inf)
0451c93c
MS		 1546{
1547 struct bfd_link_info *info;
1548 struct elf_s390_link_hash_table *htab;
470b557a 1549 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1550 struct elf_dyn_relocs *p;
0451c93c 1551
e92d460e 1552 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1553 return TRUE;
0451c93c
MS		 1554
1555 info = (struct bfd_link_info *) inf;
1556 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1557 if (htab == NULL)
1558 return FALSE;
0451c93c 1559
470b557a
AK		 1560 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1561 here if it is defined and referenced in a non-shared object. */
1562 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1563 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1564 else if (htab->elf.dynamic_sections_created
1565 && h->plt.refcount > 0)
0451c93c
MS		 1566 {
1567 /* Make sure this symbol is output as a dynamic symbol.
1568 Undefined weak syms won't yet be marked as dynamic. */
1569 if (h->dynindx == -1
f5385ebf 1570 && !h->forced_local)
0451c93c 1571 {
c152c796 1572 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1573 return FALSE;
0451c93c
MS		 1574 }
1575
0e1862bb 1576 if (bfd_link_pic (info)
4ec72bde 1577 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1578 {
f41345a7 1579 asection *s = htab->elf.splt;
0451c93c
MS		 1580
1581 /* If this is the first .plt entry, make room for the special
1582 first entry. */
eea6121a
AM		 1583 if (s->size == 0)
1584 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1585
eea6121a 1586 h->plt.offset = s->size;
0451c93c
MS		 1587
1588 /* If this symbol is not defined in a regular file, and we are
1589 not generating a shared library, then set the symbol to this
1590 location in the .plt. This is required to make function
1591 pointers compare as equal between the normal executable and
1592 the shared library. */
0e1862bb 1593 if (! bfd_link_pic (info)
f5385ebf 1594 && !h->def_regular)
0451c93c
MS		 1595 {
1596 h->root.u.def.section = s;
1597 h->root.u.def.value = h->plt.offset;
1598 }
ec338859 1599
0451c93c 1600 /* Make room for this entry. */
eea6121a 1601 s->size += PLT_ENTRY_SIZE;
ec338859 1602
0451c93c
MS		 1603 /* We also need to make an entry in the .got.plt section, which
1604 will be placed in the .got section by the linker script. */
f41345a7 1605 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1606
1607 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1608 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1609 }
1610 else
1611 {
1612 h->plt.offset = (bfd_vma) -1;
f5385ebf 1613 h->needs_plt = 0;
5236c819 1614 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1615 }
1616 }
1617 else
1618 {
1619 h->plt.offset = (bfd_vma) -1;
f5385ebf 1620 h->needs_plt = 0;
5236c819 1621 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1622 }
1623
69fc87f1
MS		 1624 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1625 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1626 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1627 we can save the dynamic TLS relocation. */
1628 if (h->got.refcount > 0
0e1862bb 1629 && !bfd_link_pic (info)
69fc87f1
MS		 1630 && h->dynindx == -1
1631 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1632 {
1633 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1634 /* For the GOTIE access without a literal pool entry the offset has
1635 to be stored somewhere. The immediate value in the instruction
1636 is not bit enough so the value is stored in the got. */
1637 {
f41345a7
AK		 1638 h->got.offset = htab->elf.sgot->size;
1639 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1640 }
1641 else
1642 h->got.offset = (bfd_vma) -1;
1643 }
1644 else if (h->got.refcount > 0)
0451c93c
MS		 1645 {
1646 asection *s;
b34976b6 1647 bfd_boolean dyn;
69fc87f1 1648 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1649
1650 /* Make sure this symbol is output as a dynamic symbol.
1651 Undefined weak syms won't yet be marked as dynamic. */
1652 if (h->dynindx == -1
f5385ebf 1653 && !h->forced_local)
0451c93c 1654 {
c152c796 1655 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1656 return FALSE;
0451c93c
MS		 1657 }
1658
f41345a7 1659 s = htab->elf.sgot;
eea6121a
AM		 1660 h->got.offset = s->size;
1661 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1662 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1663 if (tls_type == GOT_TLS_GD)
eea6121a 1664 s->size += GOT_ENTRY_SIZE;
0451c93c 1665 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1666 /* R_390_TLS_IE64 needs one dynamic relocation,
1667 R_390_TLS_GD64 needs one if local symbol and two if global. */
1668 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1669 || tls_type >= GOT_TLS_IE)
f41345a7 1670 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1671 else if (tls_type == GOT_TLS_GD)
f41345a7 1672 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1673 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1674 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1675 && (bfd_link_pic (info)
82058a73 1676 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1677 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1678 }
1679 else
1680 h->got.offset = (bfd_vma) -1;
1681
0451c93c 1682 if (eh->dyn_relocs == NULL)
b34976b6 1683 return TRUE;
0451c93c
MS		 1684
1685 /* In the shared -Bsymbolic case, discard space allocated for
1686 dynamic pc-relative relocs against symbols which turn out to be
1687 defined in regular objects. For the normal shared case, discard
1688 space for pc-relative relocs that have become local due to symbol
1689 visibility changes. */
1690
0e1862bb 1691 if (bfd_link_pic (info))
0451c93c 1692 {
8c21ca21 1693 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1694 {
00d8c7a9 1695 struct elf_dyn_relocs **pp;
0451c93c
MS		 1696
1697 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1698 {
1699 p->count -= p->pc_count;
1700 p->pc_count = 0;
1701 if (p->count == 0)
1702 *pp = p->next;
1703 else
1704 pp = &p->next;
1705 }
1706 }
82058a73
MS		 1707
1708 /* Also discard relocs on undefined weak syms with non-default
1709 visibility. */
22d606e9 1710 if (eh->dyn_relocs != NULL
82058a73 1711 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1712 {
b27bb18f
L		 1713 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1714 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
22d606e9
AM		 1715 eh->dyn_relocs = NULL;
1716
1717 /* Make sure undefined weak symbols are output as a dynamic
1718 symbol in PIEs. */
1719 else if (h->dynindx == -1
1720 && !h->forced_local)
1721 {
1722 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1723 return FALSE;
1724 }
1725 }
0451c93c 1726 }
64285810 1727 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1728 {
1729 /* For the non-shared case, discard space for relocs against
1730 symbols which turn out to need copy relocs or are not
1731 dynamic. */
1732
f5385ebf
AM		 1733 if (!h->non_got_ref
1734 && ((h->def_dynamic
1735 && !h->def_regular)
0451c93c
MS		 1736 || (htab->elf.dynamic_sections_created
1737 && (h->root.type == bfd_link_hash_undefweak
1738 || h->root.type == bfd_link_hash_undefined))))
1739 {
1740 /* Make sure this symbol is output as a dynamic symbol.
1741 Undefined weak syms won't yet be marked as dynamic. */
1742 if (h->dynindx == -1
f5385ebf 1743 && !h->forced_local)
0451c93c 1744 {
c152c796 1745 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1746 return FALSE;
0451c93c
MS		 1747 }
1748
1749 /* If that succeeded, we know we'll be keeping all the
1750 relocs. */
1751 if (h->dynindx != -1)
1752 goto keep;
1753 }
1754
1755 eh->dyn_relocs = NULL;
1756
ec338859 1757 keep: ;
0451c93c
MS		 1758 }
1759
1760 /* Finally, allocate space. */
1761 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1762 {
1763 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1764 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1765 }
1766
b34976b6 1767 return TRUE;
0451c93c
MS		 1768}
1769
1770/* Find any dynamic relocs that apply to read-only sections. */
1771
b34976b6 1772static bfd_boolean
2c3fc389 1773readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1774{
1775 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1776 struct elf_dyn_relocs *p;
0451c93c
MS		 1777
1778 eh = (struct elf_s390_link_hash_entry *) h;
1779 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1780 {
1781 asection *s = p->sec->output_section;
1782
1783 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1784 {
1785 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1786
1787 info->flags |= DF_TEXTREL;
1788
1789 /* Not an error, just cut short the traversal. */
b34976b6 1790 return FALSE;
0451c93c
MS		 1791 }
1792 }
b34976b6 1793 return TRUE;
0451c93c
MS		 1794}
1795
a85d7ed0
NC		 1796/* Set the sizes of the dynamic sections. */
1797
b34976b6 1798static bfd_boolean
4dfe6ac6
NC		 1799elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1800 struct bfd_link_info *info)
a85d7ed0 1801{
0451c93c 1802 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1803 bfd *dynobj;
1804 asection *s;
b34976b6 1805 bfd_boolean relocs;
0451c93c 1806 bfd *ibfd;
a85d7ed0 1807
0451c93c 1808 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1809 if (htab == NULL)
1810 return FALSE;
1811
0451c93c
MS		 1812 dynobj = htab->elf.dynobj;
1813 if (dynobj == NULL)
1814 abort ();
a85d7ed0 1815
0451c93c 1816 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1817 {
1818 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1819 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1820 {
3d4d4302 1821 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1822 if (s == NULL)
1823 abort ();
eea6121a 1824 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1825 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1826 }
1827 }
a85d7ed0 1828
0451c93c
MS		 1829 /* Set up .got offsets for local syms, and space for local dynamic
1830 relocs. */
c72f2fb2 1831 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1832 {
0451c93c
MS		 1833 bfd_signed_vma *local_got;
1834 bfd_signed_vma *end_local_got;
69fc87f1 1835 char *local_tls_type;
0451c93c
MS		 1836 bfd_size_type locsymcount;
1837 Elf_Internal_Shdr *symtab_hdr;
1838 asection *srela;
470b557a
AK		 1839 struct plt_entry *local_plt;
1840 unsigned int i;
a85d7ed0 1841
0ffa91dd 1842 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1843 continue;
1844
0451c93c 1845 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1846 {
00d8c7a9 1847 struct elf_dyn_relocs *p;
0451c93c 1848
6edfbbad 1849 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1850 {
ec338859
AM		 1851 if (!bfd_is_abs_section (p->sec)
1852 && bfd_is_abs_section (p->sec->output_section))
1853 {
1854 /* Input section has been discarded, either because
1855 it is a copy of a linkonce section or due to
1856 linker script /DISCARD/, so we'll be discarding
1857 the relocs too. */
1858 }
248866a8 1859 else if (p->count != 0)
ec338859
AM		 1860 {
1861 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1862 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1863 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1864 info->flags |= DF_TEXTREL;
ec338859 1865 }
a85d7ed0
NC		 1866 }
1867 }
0451c93c
MS		 1868
1869 local_got = elf_local_got_refcounts (ibfd);
1870 if (!local_got)
1871 continue;
1872
0ffa91dd 1873 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1874 locsymcount = symtab_hdr->sh_info;
1875 end_local_got = local_got + locsymcount;
69fc87f1 1876 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1877 s = htab->elf.sgot;
1878 srela = htab->elf.srelgot;
69fc87f1 1879 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1880 {
0451c93c 1881 if (*local_got > 0)
a85d7ed0 1882 {
eea6121a
AM		 1883 *local_got = s->size;
1884 s->size += GOT_ENTRY_SIZE;
69fc87f1 1885 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1886 s->size += GOT_ENTRY_SIZE;
0e1862bb 1887 if (bfd_link_pic (info))
eea6121a 1888 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 1889 }
1890 else
0451c93c 1891 *local_got = (bfd_vma) -1;
a85d7ed0 1892 }
470b557a
AK		 1893
1894 local_plt = elf_s390_local_plt (ibfd);
1895 for (i = 0; i < symtab_hdr->sh_info; i++)
1896 {
1897 if (local_plt[i].plt.refcount > 0)
1898 {
1899 local_plt[i].plt.offset = htab->elf.iplt->size;
1900 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1901 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1902 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
1903 }
1904 else
1905 local_plt[i].plt.offset = (bfd_vma) -1;
1906 }
0451c93c
MS		 1907 }
1908
69fc87f1
MS		 1909 if (htab->tls_ldm_got.refcount > 0)
1910 {
1911 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1912 relocs. */
f41345a7
AK		 1913 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1914 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1915 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 1916 }
1917 else
1918 htab->tls_ldm_got.offset = -1;
1919
0451c93c
MS		 1920 /* Allocate global sym .plt and .got entries, and space for global
1921 sym dynamic relocs. */
2c3fc389 1922 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1923
1924 /* We now have determined the sizes of the various dynamic sections.
1925 Allocate memory for them. */
b34976b6 1926 relocs = FALSE;
0451c93c
MS		 1927 for (s = dynobj->sections; s != NULL; s = s->next)
1928 {
1929 if ((s->flags & SEC_LINKER_CREATED) == 0)
1930 continue;
1931
f41345a7
AK		 1932 if (s == htab->elf.splt
1933 || s == htab->elf.sgot
1934 || s == htab->elf.sgotplt
9d19e4fd 1935 || s == htab->elf.sdynbss
5474d94f 1936 || s == htab->elf.sdynrelro
470b557a
AK		 1937 || s == htab->elf.iplt
1938 || s == htab->elf.igotplt
1939 || s == htab->irelifunc)
0451c93c
MS		 1940 {
1941 /* Strip this section if we don't need it; see the
1942 comment below. */
1943 }
0112cd26 1944 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 1945 {
f41345a7 1946 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 1947 relocs = TRUE;
ec338859 1948
0451c93c
MS		 1949 /* We use the reloc_count field as a counter if we need
1950 to copy relocs into the output file. */
1951 s->reloc_count = 0;
1952 }
1953 else
a85d7ed0
NC		 1954 {
1955 /* It's not one of our sections, so don't allocate space. */
1956 continue;
1957 }
1958
eea6121a 1959 if (s->size == 0)
a85d7ed0 1960 {
0451c93c
MS		 1961 /* If we don't need this section, strip it from the
1962 output file. This is to handle .rela.bss and
1963 .rela.plt. We must create it in
1964 create_dynamic_sections, because it must be created
1965 before the linker maps input sections to output
1966 sections. The linker does that before
1967 adjust_dynamic_symbol is called, and it is that
1968 function which decides whether anything needs to go
1969 into these sections. */
1970
8423293d 1971 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1972 continue;
1973 }
1974
c456f082
AM		 1975 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1976 continue;
1977
0451c93c
MS		 1978 /* Allocate memory for the section contents. We use bfd_zalloc
1979 here in case unused entries are not reclaimed before the
1980 section's contents are written out. This should not happen,
1981 but this way if it does, we get a R_390_NONE reloc instead
1982 of garbage. */
eea6121a 1983 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1984 if (s->contents == NULL)
b34976b6 1985 return FALSE;
a85d7ed0
NC		 1986 }
1987
0451c93c 1988 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1989 {
1990 /* Add some entries to the .dynamic section. We fill in the
1991 values later, in elf_s390_finish_dynamic_sections, but we
1992 must add the entries now so that we get the correct size for
1993 the .dynamic section. The DT_DEBUG entry is filled in by the
1994 dynamic linker and used by the debugger. */
dc810e39 1995#define add_dynamic_entry(TAG, VAL) \
5a580b3a 1996 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 1997
0e1862bb 1998 if (bfd_link_executable (info))
a85d7ed0 1999 {
dc810e39 2000 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2001 return FALSE;
a85d7ed0
NC		 2002 }
2003
f41345a7 2004 if (htab->elf.splt->size != 0)
a85d7ed0 2005 {
dc810e39
AM		 2006 if (!add_dynamic_entry (DT_PLTGOT, 0)
2007 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2008 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2009 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2010 return FALSE;
a85d7ed0
NC		 2011 }
2012
2013 if (relocs)
947216bf
AM		 2014 {
2015 if (!add_dynamic_entry (DT_RELA, 0)
2016 || !add_dynamic_entry (DT_RELASZ, 0)
2017 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2018 return FALSE;
ec338859 2019
0451c93c
MS		 2020 /* If any dynamic relocs apply to a read-only section,
2021 then we need a DT_TEXTREL entry. */
248866a8
AM		 2022 if ((info->flags & DF_TEXTREL) == 0)
2023 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2024 info);
ec338859 2025
0451c93c
MS		 2026 if ((info->flags & DF_TEXTREL) != 0)
2027 {
2028 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2029 return FALSE;
0451c93c 2030 }
a85d7ed0
NC		 2031 }
2032 }
dc810e39 2033#undef add_dynamic_entry
a85d7ed0 2034
b34976b6 2035 return TRUE;
a85d7ed0
NC		 2036}
2037
69fc87f1
MS		 2038/* Return the base VMA address which should be subtracted from real addresses
2039 when resolving @dtpoff relocation.
2040 This is PT_TLS segment p_vaddr. */
2041
2042static bfd_vma
2c3fc389 2043dtpoff_base (struct bfd_link_info *info)
69fc87f1 2044{
e1918d23
AM		 2045 /* If tls_sec is NULL, we should have signalled an error already. */
2046 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2047 return 0;
e1918d23 2048 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2049}
2050
2051/* Return the relocation value for @tpoff relocation
2052 if STT_TLS virtual address is ADDRESS. */
2053
2054static bfd_vma
2c3fc389 2055tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2056{
e1918d23 2057 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2058
e1918d23
AM		 2059 /* If tls_sec is NULL, we should have signalled an error already. */
2060 if (htab->tls_sec == NULL)
69fc87f1 2061 return 0;
e1918d23 2062 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2063}
2064
2065/* Complain if TLS instruction relocation is against an invalid
2066 instruction. */
2067
2068static void
2c3fc389
NC		 2069invalid_tls_insn (bfd *input_bfd,
2070 asection *input_section,
2071 Elf_Internal_Rela *rel)
69fc87f1
MS		 2072{
2073 reloc_howto_type *howto;
2074
2075 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2076 _bfd_error_handler
695344c0 2077 /* xgettext:c-format */
d42c267e 2078 (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"),
d003868e
AM		 2079 input_bfd,
2080 input_section,
d42c267e 2081 rel->r_offset,
69fc87f1 2082 howto->name);
77df2968 2083 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2084}
2085
a85d7ed0
NC		 2086/* Relocate a 390 ELF section. */
2087
b34976b6 2088static bfd_boolean
4dfe6ac6
NC		 2089elf_s390_relocate_section (bfd *output_bfd,
2090 struct bfd_link_info *info,
2091 bfd *input_bfd,
2092 asection *input_section,
2093 bfd_byte *contents,
2094 Elf_Internal_Rela *relocs,
2095 Elf_Internal_Sym *local_syms,
2096 asection **local_sections)
a85d7ed0 2097{
0451c93c 2098 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2099 Elf_Internal_Shdr *symtab_hdr;
2100 struct elf_link_hash_entry **sym_hashes;
2101 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2102 Elf_Internal_Rela *rel;
2103 Elf_Internal_Rela *relend;
2104
0ffa91dd
NC		 2105 BFD_ASSERT (is_s390_elf (input_bfd));
2106
0451c93c 2107 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2108 if (htab == NULL)
2109 return FALSE;
2110
0ffa91dd 2111 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2112 sym_hashes = elf_sym_hashes (input_bfd);
2113 local_got_offsets = elf_local_got_offsets (input_bfd);
2114
a85d7ed0
NC		 2115 rel = relocs;
2116 relend = relocs + input_section->reloc_count;
2117 for (; rel < relend; rel++)
2118 {
5236c819 2119 unsigned int r_type;
a85d7ed0
NC		 2120 reloc_howto_type *howto;
2121 unsigned long r_symndx;
2122 struct elf_link_hash_entry *h;
2123 Elf_Internal_Sym *sym;
2124 asection *sec;
0451c93c 2125 bfd_vma off;
a85d7ed0 2126 bfd_vma relocation;
b34976b6 2127 bfd_boolean unresolved_reloc;
a85d7ed0 2128 bfd_reloc_status_type r;
69fc87f1 2129 int tls_type;
470b557a 2130 asection *base_got = htab->elf.sgot;
b27bb18f 2131 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2132
2133 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2134 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2135 || r_type == (int) R_390_GNU_VTENTRY)
2136 continue;
5236c819 2137 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2138 {
2139 bfd_set_error (bfd_error_bad_value);
b34976b6 2140 return FALSE;
a85d7ed0 2141 }
a85d7ed0 2142
b491616a 2143 howto = elf_howto_table + r_type;
a85d7ed0 2144 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2145
a85d7ed0
NC		 2146 h = NULL;
2147 sym = NULL;
2148 sec = NULL;
b34976b6 2149 unresolved_reloc = FALSE;
a85d7ed0
NC		 2150 if (r_symndx < symtab_hdr->sh_info)
2151 {
2152 sym = local_syms + r_symndx;
2153 sec = local_sections[r_symndx];
470b557a
AK		 2154
2155 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2156 {
2157 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2158 if (local_plt == NULL)
2159 return FALSE;
2160
2161 /* Address of the PLT slot. */
2162 relocation = (htab->elf.iplt->output_section->vma
2163 + htab->elf.iplt->output_offset
2164 + local_plt[r_symndx].plt.offset);
2165
2166 switch (r_type)
2167 {
31db78f6
AK		 2168 case R_390_PLTOFF16:
2169 case R_390_PLTOFF32:
2170 case R_390_PLTOFF64:
2171 relocation -= htab->elf.sgot->output_section->vma;
2172 break;
470b557a
AK		 2173 case R_390_GOTPLT12:
2174 case R_390_GOTPLT16:
2175 case R_390_GOTPLT20:
2176 case R_390_GOTPLT32:
2177 case R_390_GOTPLT64:
2178 case R_390_GOTPLTENT:
2179 case R_390_GOT12:
2180 case R_390_GOT16:
2181 case R_390_GOT20:
2182 case R_390_GOT32:
2183 case R_390_GOT64:
2184 case R_390_GOTENT:
2185 {
2186 /* Write the PLT slot address into the GOT slot. */
2187 bfd_put_64 (output_bfd, relocation,
2188 htab->elf.sgot->contents +
2189 local_got_offsets[r_symndx]);
2190 relocation = (local_got_offsets[r_symndx] +
2191 htab->elf.sgot->output_offset);
2192
2193 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2194 relocation += htab->elf.sgot->output_section->vma;
2195 break;
2196 }
2197 default:
2198 break;
2199 }
2200 /* The output section is needed later in
2201 finish_dynamic_section when creating the dynamic
2202 relocation. */
2203 local_plt[r_symndx].sec = sec;
2204 goto do_relocation;
2205 }
2206 else
2207 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2208 }
2209 else
2210 {
560e09e9 2211 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2212 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2213
b2a8e766
AM		 2214 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2215 r_symndx, symtab_hdr, sym_hashes,
2216 h, sec, relocation,
62d887d4 2217 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2218 }
2219
dbaa2011 2220 if (sec != NULL && discarded_section (sec))
e4067dbb 2221 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2222 rel, 1, relend, howto, 0, contents);
ab96bf03 2223
0e1862bb 2224 if (bfd_link_relocatable (info))
ab96bf03
AM		 2225 continue;
2226
b27bb18f
L		 2227 resolved_to_zero = (h != NULL
2228 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2229
a85d7ed0
NC		 2230 switch (r_type)
2231 {
5236c819
MS		 2232 case R_390_GOTPLT12:
2233 case R_390_GOTPLT16:
bd1ea41b 2234 case R_390_GOTPLT20:
5236c819
MS		 2235 case R_390_GOTPLT32:
2236 case R_390_GOTPLT64:
2237 case R_390_GOTPLTENT:
2238 /* There are three cases for a GOTPLT relocation. 1) The
2239 relocation is against the jump slot entry of a plt that
2240 will get emitted to the output file. 2) The relocation
2241 is against the jump slot of a plt entry that has been
2242 removed. elf_s390_adjust_gotplt has created a GOT entry
2243 as replacement. 3) The relocation is against a local symbol.
2244 Cases 2) and 3) are the same as the GOT relocation code
2245 so we just have to test for case 1 and fall through for
2246 the other two. */
2247 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2248 {
2249 bfd_vma plt_index;
2250
470b557a
AK		 2251 if (s390_is_ifunc_symbol_p (h))
2252 {
2253 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2254 relocation = (plt_index * GOT_ENTRY_SIZE +
2255 htab->elf.igotplt->output_offset);
2256 if (r_type == R_390_GOTPLTENT)
2257 relocation += htab->elf.igotplt->output_section->vma;
2258 }
2259 else
2260 {
2261 /* Calc. index no.
2262 Current offset - size first entry / entry size. */
2263 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2264 PLT_ENTRY_SIZE;
2265
2266 /* Offset in GOT is PLT index plus GOT headers(3)
3b67f094 2267 times 8, addr & GOT addr. */
470b557a
AK		 2268 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2269 if (r_type == R_390_GOTPLTENT)
2270 relocation += htab->elf.sgot->output_section->vma;
2271 }
5236c819 2272 unresolved_reloc = FALSE;
5236c819
MS		 2273 break;
2274 }
2275 /* Fall through. */
2276
947216bf
AM		 2277 case R_390_GOT12:
2278 case R_390_GOT16:
bd1ea41b 2279 case R_390_GOT20:
947216bf
AM		 2280 case R_390_GOT32:
2281 case R_390_GOT64:
2282 case R_390_GOTENT:
2283 /* Relocation is to the entry for this symbol in the global
2284 offset table. */
470b557a 2285 if (base_got == NULL)
0451c93c 2286 abort ();
a85d7ed0 2287
947216bf
AM		 2288 if (h != NULL)
2289 {
b34976b6 2290 bfd_boolean dyn;
a85d7ed0 2291
947216bf 2292 off = h->got.offset;
0451c93c 2293 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2294
2295 if (s390_is_ifunc_symbol_p (h))
2296 {
2297 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2298 if (off == (bfd_vma)-1)
2299 {
2300 /* No explicit GOT usage so redirect to the
2301 got.iplt slot. */
2302 base_got = htab->elf.igotplt;
2303 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2304 }
2305 else
2306 {
2307 /* Explicit GOT slots must contain the address
2308 of the PLT slot. This will be handled in
2309 finish_dynamic_symbol. */
2310 }
2311 }
0e1862bb
L		 2312 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2313 bfd_link_pic (info),
2314 h)
2315 || (bfd_link_pic (info)
470b557a
AK		 2316 && SYMBOL_REFERENCES_LOCAL (info, h))
2317 || (ELF_ST_VISIBILITY (h->other)
2318 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2319 {
2320 /* This is actually a static link, or it is a
2321 -Bsymbolic link and the symbol is defined
2322 locally, or the symbol was forced to be local
2323 because of a version file. We must initialize
2324 this entry in the global offset table. Since the
2325 offset must always be a multiple of 2, we use the
2326 least significant bit to record whether we have
2327 initialized it already.
2328
2329 When doing a dynamic link, we create a .rel.got
2330 relocation entry to initialize the value. This
2331 is done in the finish_dynamic_symbol routine. */
2332 if ((off & 1) != 0)
2333 off &= ~1;
2334 else
2335 {
a85d7ed0 2336 bfd_put_64 (output_bfd, relocation,
470b557a 2337 base_got->contents + off);
947216bf
AM		 2338 h->got.offset |= 1;
2339 }
a63cc5f7
AK		 2340
2341 if ((h->def_regular
0e1862bb 2342 && bfd_link_pic (info)
a63cc5f7
AK		 2343 && SYMBOL_REFERENCES_LOCAL (info, h))
2344 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2345 && ((r_type == R_390_GOTENT
2346 && (bfd_get_16 (input_bfd,
2347 contents + rel->r_offset - 2)
2348 & 0xff0f) == 0xc408)
2349 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2350 || (r_type == R_390_GOT20
2351 && (bfd_get_32 (input_bfd,
2352 contents + rel->r_offset - 2)
2353 & 0xff00f000) == 0xe300c000
2354 && bfd_get_8 (input_bfd,
2355 contents + rel->r_offset + 3) == 0x04)))
2356
2357 {
2358 unsigned short new_insn =
2359 (0xc000 | (bfd_get_8 (input_bfd,
2360 contents + rel->r_offset - 1) & 0xf0));
2361 bfd_put_16 (output_bfd, new_insn,
2362 contents + rel->r_offset - 2);
2363 r_type = R_390_PC32DBL;
2364 rel->r_addend = 2;
2365 howto = elf_howto_table + r_type;
2366 relocation = h->root.u.def.value
2367 + h->root.u.def.section->output_section->vma
2368 + h->root.u.def.section->output_offset;
2369 goto do_relocation;
2370 }
947216bf 2371 }
0451c93c 2372 else
b34976b6 2373 unresolved_reloc = FALSE;
947216bf
AM		 2374 }
2375 else
2376 {
0451c93c
MS		 2377 if (local_got_offsets == NULL)
2378 abort ();
a85d7ed0 2379
947216bf 2380 off = local_got_offsets[r_symndx];
a85d7ed0 2381
947216bf
AM		 2382 /* The offset must always be a multiple of 8. We use
2383 the least significant bit to record whether we have
2384 already generated the necessary reloc. */
2385 if ((off & 1) != 0)
2386 off &= ~1;
2387 else
2388 {
2389 bfd_put_64 (output_bfd, relocation,
f41345a7 2390 htab->elf.sgot->contents + off);
a85d7ed0 2391
0e1862bb 2392 if (bfd_link_pic (info))
947216bf
AM		 2393 {
2394 asection *s;
2395 Elf_Internal_Rela outrel;
2396 bfd_byte *loc;
a85d7ed0 2397
f41345a7 2398 s = htab->elf.srelgot;
947216bf 2399 if (s == NULL)
0451c93c 2400 abort ();
a85d7ed0 2401
f41345a7
AK		 2402 outrel.r_offset = (htab->elf.sgot->output_section->vma
2403 + htab->elf.sgot->output_offset
947216bf
AM		 2404 + off);
2405 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2406 outrel.r_addend = relocation;
947216bf
AM		 2407 loc = s->contents;
2408 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2409 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2410 }
a85d7ed0 2411
947216bf
AM		 2412 local_got_offsets[r_symndx] |= 1;
2413 }
2414 }
a85d7ed0 2415
0451c93c
MS		 2416 if (off >= (bfd_vma) -2)
2417 abort ();
2418
470b557a 2419 relocation = base_got->output_offset + off;
0451c93c 2420
ae9a127f
NC		 2421 /* For @GOTENT the relocation is against the offset between
2422 the instruction and the symbols entry in the GOT and not
2423 between the start of the GOT and the symbols entry. We
2424 add the vma of the GOT to get the correct value. */
5236c819
MS		 2425 if ( r_type == R_390_GOTENT
2426 || r_type == R_390_GOTPLTENT)
470b557a 2427 relocation += base_got->output_section->vma;
a85d7ed0 2428
947216bf 2429 break;
99c79b2e 2430
5236c819
MS		 2431 case R_390_GOTOFF16:
2432 case R_390_GOTOFF32:
2433 case R_390_GOTOFF64:
947216bf
AM		 2434 /* Relocation is relative to the start of the global offset
2435 table. */
a85d7ed0 2436
d47b13e0
AK		 2437 if (h != NULL
2438 && s390_is_ifunc_symbol_p (h)
2439 && h->def_regular
2440 && !bfd_link_executable (info))
2441 {
2442 relocation = (htab->elf.iplt->output_section->vma
2443 + htab->elf.iplt->output_offset
2444 + h->plt.offset
2445 - htab->elf.sgot->output_section->vma);
2446 goto do_relocation;
2447 }
2448
947216bf
AM		 2449 /* Note that sgot->output_offset is not involved in this
2450 calculation. We always want the start of .got. If we
2451 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2452 permitted by the ABI, we might have to change this
2453 calculation. */
f41345a7 2454 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2455 break;
a85d7ed0 2456
947216bf 2457 case R_390_GOTPC:
a85d7ed0 2458 case R_390_GOTPCDBL:
947216bf 2459 /* Use global offset table as symbol value. */
f41345a7 2460 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2461 unresolved_reloc = FALSE;
947216bf 2462 break;
a85d7ed0 2463
fb798c50 2464 case R_390_PLT12DBL:
947216bf 2465 case R_390_PLT16DBL:
fb798c50 2466 case R_390_PLT24DBL:
947216bf
AM		 2467 case R_390_PLT32:
2468 case R_390_PLT32DBL:
2469 case R_390_PLT64:
2470 /* Relocation is to the entry for this symbol in the
2471 procedure linkage table. */
a85d7ed0 2472
947216bf
AM		 2473 /* Resolve a PLT32 reloc against a local symbol directly,
2474 without using the procedure linkage table. */
2475 if (h == NULL)
2476 break;
a85d7ed0 2477
947216bf 2478 if (h->plt.offset == (bfd_vma) -1
31db78f6 2479 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2480 {
2481 /* We didn't make a PLT entry for this symbol. This
2482 happens when statically linking PIC code, or when
2483 using -Bsymbolic. */
2484 break;
2485 }
470b557a
AK		 2486 if (s390_is_ifunc_symbol_p (h))
2487 relocation = (htab->elf.iplt->output_section->vma
2488 + htab->elf.iplt->output_offset
2489 + h->plt.offset);
2490 else
2491 relocation = (htab->elf.splt->output_section->vma
2492 + htab->elf.splt->output_offset
2493 + h->plt.offset);
b34976b6 2494 unresolved_reloc = FALSE;
26e41594 2495 break;
5236c819
MS		 2496
2497 case R_390_PLTOFF16:
2498 case R_390_PLTOFF32:
2499 case R_390_PLTOFF64:
26e41594
AM		 2500 /* Relocation is to the entry for this symbol in the
2501 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2502
2503 /* For local symbols or if we didn't make a PLT entry for
2504 this symbol resolve the symbol directly. */
31db78f6 2505 if (h == NULL
5236c819 2506 || h->plt.offset == (bfd_vma) -1
31db78f6 2507 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2508 {
f41345a7 2509 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2510 break;
2511 }
2512
470b557a
AK		 2513 if (s390_is_ifunc_symbol_p (h))
2514 relocation = (htab->elf.iplt->output_section->vma
2515 + htab->elf.iplt->output_offset
2516 + h->plt.offset
2517 - htab->elf.sgot->output_section->vma);
2518 else
2519 relocation = (htab->elf.splt->output_section->vma
2520 + htab->elf.splt->output_offset
2521 + h->plt.offset
2522 - htab->elf.sgot->output_section->vma);
5236c819 2523 unresolved_reloc = FALSE;
947216bf
AM		 2524 break;
2525
947216bf 2526 case R_390_PC16:
fb798c50 2527 case R_390_PC12DBL:
947216bf 2528 case R_390_PC16DBL:
fb798c50 2529 case R_390_PC24DBL:
947216bf 2530 case R_390_PC32:
a85d7ed0 2531 case R_390_PC32DBL:
947216bf 2532 case R_390_PC64:
431e5de3
AK		 2533 if (h != NULL
2534 && bfd_link_pie (info)
2535 && !h->def_regular)
2536 {
2537 _bfd_error_handler (_("%B: `%s' non-PLT reloc for symbol defined "
2538 "in shared library and accessed "
2539 "from executable "
2540 "(rebuild file with -fPIC ?)"),
2541 input_bfd, h->root.root.string);
2542 bfd_set_error (bfd_error_bad_value);
2543 return FALSE;
2544 }
99ba5125
AK		 2545 /* The target of these relocs are instruction operands
2546 residing in read-only sections. We cannot emit a runtime
2547 reloc for it. */
2548 if (h != NULL
2549 && s390_is_ifunc_symbol_p (h)
2550 && h->def_regular
2551 && bfd_link_pic (info))
2552 {
2553 relocation = (htab->elf.iplt->output_section->vma
2554 + htab->elf.iplt->output_offset
2555 + h->plt.offset);
2556 goto do_relocation;
2557 }
1a0670f3 2558 /* Fall through. */
99ba5125
AK		 2559
2560 case R_390_8:
2561 case R_390_16:
2562 case R_390_32:
2563 case R_390_64:
470b557a
AK		 2564
2565 if (h != NULL
2566 && s390_is_ifunc_symbol_p (h)
2567 && h->def_regular)
2568 {
d7ab4911 2569 if (!bfd_link_pic (info))
470b557a 2570 {
d7ab4911
AK		 2571 /* For a non-shared object the symbol will not
2572 change. Hence we can write the address of the
2573 target IPLT slot now. */
470b557a
AK		 2574 relocation = (htab->elf.iplt->output_section->vma
2575 + htab->elf.iplt->output_offset
2576 + h ->plt.offset);
2577 goto do_relocation;
2578 }
2579 else
2580 {
2581 /* For shared objects a runtime relocation is needed. */
2582
2583 Elf_Internal_Rela outrel;
2584 asection *sreloc;
2585
2586 /* Need a dynamic relocation to get the real function
2587 address. */
2588 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2589 info,
2590 input_section,
2591 rel->r_offset);
2592 if (outrel.r_offset == (bfd_vma) -1
2593 || outrel.r_offset == (bfd_vma) -2)
2594 abort ();
2595
2596 outrel.r_offset += (input_section->output_section->vma
2597 + input_section->output_offset);
2598
2599 if (h->dynindx == -1
2600 || h->forced_local
0e1862bb 2601 || bfd_link_executable (info))
470b557a
AK		 2602 {
2603 /* This symbol is resolved locally. */
2604 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2605 outrel.r_addend = (h->root.u.def.value
2606 + h->root.u.def.section->output_section->vma
2607 + h->root.u.def.section->output_offset);
2608 }
2609 else
2610 {
2611 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2612 outrel.r_addend = 0;
2613 }
2614
2615 sreloc = htab->elf.irelifunc;
2616 elf_append_rela (output_bfd, sreloc, &outrel);
2617
2618 /* If this reloc is against an external symbol, we
2619 do not want to fiddle with the addend. Otherwise,
2620 we need to include the symbol value so that it
2621 becomes an addend for the dynamic reloc. For an
2622 internal symbol, we have updated addend. */
2623 continue;
2624 }
2625 }
2626
b1e24c02 2627 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2628 break;
2629
0e1862bb 2630 if ((bfd_link_pic (info)
82058a73 2631 && (h == NULL
b27bb18f
L		 2632 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2633 && !resolved_to_zero)
82058a73 2634 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2635 && ((r_type != R_390_PC16
fb798c50 2636 && r_type != R_390_PC12DBL
0451c93c 2637 && r_type != R_390_PC16DBL
fb798c50 2638 && r_type != R_390_PC24DBL
0451c93c
MS		 2639 && r_type != R_390_PC32
2640 && r_type != R_390_PC32DBL
2641 && r_type != R_390_PC64)
8c21ca21 2642 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2643 || (ELIMINATE_COPY_RELOCS
0e1862bb 2644 && !bfd_link_pic (info)
0451c93c
MS		 2645 && h != NULL
2646 && h->dynindx != -1
f5385ebf
AM		 2647 && !h->non_got_ref
2648 && ((h->def_dynamic
2649 && !h->def_regular)
0451c93c
MS		 2650 || h->root.type == bfd_link_hash_undefweak
2651 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2652 {
2653 Elf_Internal_Rela outrel;
b34976b6 2654 bfd_boolean skip, relocate;
0451c93c 2655 asection *sreloc;
947216bf 2656 bfd_byte *loc;
a85d7ed0 2657
947216bf
AM		 2658 /* When generating a shared object, these relocations
2659 are copied into the output file to be resolved at run
2660 time. */
b34976b6
AM		 2661 skip = FALSE;
2662 relocate = FALSE;
a85d7ed0 2663
c629eae0
JJ		 2664 outrel.r_offset =
2665 _bfd_elf_section_offset (output_bfd, info, input_section,
2666 rel->r_offset);
2667 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2668 skip = TRUE;
0bb2d96a 2669 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2670 skip = TRUE, relocate = TRUE;
a85d7ed0 2671
947216bf
AM		 2672 outrel.r_offset += (input_section->output_section->vma
2673 + input_section->output_offset);
a85d7ed0 2674
947216bf 2675 if (skip)
0bb2d96a 2676 memset (&outrel, 0, sizeof outrel);
947216bf 2677 else if (h != NULL
0451c93c
MS		 2678 && h->dynindx != -1
2679 && (r_type == R_390_PC16
fb798c50 2680 || r_type == R_390_PC12DBL
0451c93c 2681 || r_type == R_390_PC16DBL
fb798c50 2682 || r_type == R_390_PC24DBL
0451c93c
MS		 2683 || r_type == R_390_PC32
2684 || r_type == R_390_PC32DBL
2685 || r_type == R_390_PC64
0e1862bb 2686 || !bfd_link_pic (info)
8c21ca21 2687 || !SYMBOLIC_BIND (info, h)
f5385ebf 2688 || !h->def_regular))
947216bf
AM		 2689 {
2690 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2691 outrel.r_addend = rel->r_addend;
947216bf
AM		 2692 }
2693 else
2694 {
0451c93c 2695 /* This symbol is local, or marked to become local. */
90ced0dd 2696 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2697 if (r_type == R_390_64)
2698 {
2699 relocate = TRUE;
2700 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2701 }
2702 else
2703 {
2704 long sindx;
2705
90ced0dd 2706 if (bfd_is_abs_section (sec))
b5727d75
MS		 2707 sindx = 0;
2708 else if (sec == NULL || sec->owner == NULL)
2709 {
2710 bfd_set_error(bfd_error_bad_value);
2711 return FALSE;
2712 }
2713 else
2714 {
2715 asection *osec;
2716
2717 osec = sec->output_section;
2718 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2719
2720 if (sindx == 0)
2721 {
2722 osec = htab->elf.text_index_section;
2723 sindx = elf_section_data (osec)->dynindx;
2724 }
2725 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2726
2727 /* We are turning this relocation into one
2728 against a section symbol, so subtract out
2729 the output section's address but not the
2730 offset of the input section in the output
2731 section. */
90ced0dd 2732 outrel.r_addend -= osec->vma;
b5727d75
MS		 2733 }
2734 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2735 }
0451c93c 2736 }
a85d7ed0 2737
0451c93c
MS		 2738 sreloc = elf_section_data (input_section)->sreloc;
2739 if (sreloc == NULL)
2740 abort ();
2741
947216bf
AM		 2742 loc = sreloc->contents;
2743 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2744 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2745
947216bf
AM		 2746 /* If this reloc is against an external symbol, we do
2747 not want to fiddle with the addend. Otherwise, we
2748 need to include the symbol value so that it becomes
2749 an addend for the dynamic reloc. */
2750 if (! relocate)
2751 continue;
2752 }
a85d7ed0 2753
947216bf 2754 break;
a85d7ed0 2755
69fc87f1
MS		 2756 /* Relocations for tls literal pool entries. */
2757 case R_390_TLS_IE64:
0e1862bb 2758 if (bfd_link_pic (info))
69fc87f1
MS		 2759 {
2760 Elf_Internal_Rela outrel;
2761 asection *sreloc;
2762 bfd_byte *loc;
2763
2764 outrel.r_offset = rel->r_offset
2765 + input_section->output_section->vma
2766 + input_section->output_offset;
2767 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2768 sreloc = elf_section_data (input_section)->sreloc;
2769 if (sreloc == NULL)
2770 abort ();
2771 loc = sreloc->contents;
2772 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2773 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2774 }
ae9a127f 2775 /* Fall through. */
69fc87f1
MS		 2776
2777 case R_390_TLS_GD64:
2778 case R_390_TLS_GOTIE64:
2779 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2780 tls_type = GOT_UNKNOWN;
2781 if (h == NULL && local_got_offsets)
2782 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2783 else if (h != NULL)
2784 {
2785 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2786 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2787 r_type = R_390_TLS_LE64;
2788 }
2789 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2790 r_type = R_390_TLS_IE64;
2791
2792 if (r_type == R_390_TLS_LE64)
2793 {
2794 /* This relocation gets optimized away by the local exec
2795 access optimization. */
2796 BFD_ASSERT (! unresolved_reloc);
2797 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2798 contents + rel->r_offset);
2799 continue;
2800 }
2801
f41345a7 2802 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2803 abort ();
2804
2805 if (h != NULL)
2806 off = h->got.offset;
2807 else
2808 {
2809 if (local_got_offsets == NULL)
2810 abort ();
2811
2812 off = local_got_offsets[r_symndx];
2813 }
2814
2815 emit_tls_relocs:
2816
2817 if ((off & 1) != 0)
2818 off &= ~1;
26e41594 2819 else
69fc87f1
MS		 2820 {
2821 Elf_Internal_Rela outrel;
2822 bfd_byte *loc;
2823 int dr_type, indx;
2824
f41345a7 2825 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2826 abort ();
2827
f41345a7
AK		 2828 outrel.r_offset = (htab->elf.sgot->output_section->vma
2829 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2830
2831 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2832 if (r_type == R_390_TLS_GD64)
2833 dr_type = R_390_TLS_DTPMOD;
2834 else
2835 dr_type = R_390_TLS_TPOFF;
2836 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2837 outrel.r_addend = relocation - dtpoff_base (info);
2838 else
2839 outrel.r_addend = 0;
2840 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2841 loc = htab->elf.srelgot->contents;
2842 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2843 * sizeof (Elf64_External_Rela);
2844 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2845
2846 if (r_type == R_390_TLS_GD64)
2847 {
2848 if (indx == 0)
2849 {
2850 BFD_ASSERT (! unresolved_reloc);
2851 bfd_put_64 (output_bfd,
2852 relocation - dtpoff_base (info),
f41345a7 2853 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2854 }
2855 else
2856 {
2857 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2858 outrel.r_offset += GOT_ENTRY_SIZE;
2859 outrel.r_addend = 0;
f41345a7 2860 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2861 loc += sizeof (Elf64_External_Rela);
2862 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2863 }
2864 }
2865
2866 if (h != NULL)
2867 h->got.offset |= 1;
2868 else
2869 local_got_offsets[r_symndx] |= 1;
2870 }
2871
2872 if (off >= (bfd_vma) -2)
2873 abort ();
2874 if (r_type == ELF64_R_TYPE (rel->r_info))
2875 {
f41345a7 2876 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2877 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2878 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2879 unresolved_reloc = FALSE;
2880 }
2881 else
2882 {
f41345a7 2883 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2884 contents + rel->r_offset);
2885 continue;
2886 }
2887 break;
2888
2889 case R_390_TLS_GOTIE12:
bd1ea41b 2890 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2891 case R_390_TLS_IEENT:
2892 if (h == NULL)
2893 {
2894 if (local_got_offsets == NULL)
2895 abort();
2896 off = local_got_offsets[r_symndx];
0e1862bb 2897 if (bfd_link_pic (info))
69fc87f1
MS		 2898 goto emit_tls_relocs;
2899 }
2900 else
2901 {
2902 off = h->got.offset;
2903 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2904 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2905 goto emit_tls_relocs;
2906 }
2907
f41345a7 2908 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2909 abort ();
2910
2911 BFD_ASSERT (! unresolved_reloc);
2912 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2913 htab->elf.sgot->contents + off);
2914 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2915 if (r_type == R_390_TLS_IEENT)
f41345a7 2916 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2917 unresolved_reloc = FALSE;
2918 break;
2919
2920 case R_390_TLS_LDM64:
0e1862bb 2921 if (! bfd_link_pic (info))
69fc87f1
MS		 2922 /* The literal pool entry this relocation refers to gets ignored
2923 by the optimized code of the local exec model. Do nothing
2924 and the value will turn out zero. */
2925 continue;
2926
f41345a7 2927 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2928 abort ();
2929
2930 off = htab->tls_ldm_got.offset;
2931 if (off & 1)
2932 off &= ~1;
2933 else
2934 {
2935 Elf_Internal_Rela outrel;
2936 bfd_byte *loc;
2937
f41345a7 2938 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2939 abort ();
2940
f41345a7
AK		 2941 outrel.r_offset = (htab->elf.sgot->output_section->vma
2942 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2943
2944 bfd_put_64 (output_bfd, 0,
f41345a7 2945 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2946 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2947 outrel.r_addend = 0;
f41345a7
AK		 2948 loc = htab->elf.srelgot->contents;
2949 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2950 * sizeof (Elf64_External_Rela);
2951 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2952 htab->tls_ldm_got.offset |= 1;
2953 }
f41345a7 2954 relocation = htab->elf.sgot->output_offset + off;
26e41594 2955 unresolved_reloc = FALSE;
69fc87f1
MS		 2956 break;
2957
2958 case R_390_TLS_LE64:
3cbc1e5e 2959 if (bfd_link_dll (info))
69fc87f1
MS		 2960 {
2961 /* Linking a shared library with non-fpic code requires
2962 a R_390_TLS_TPOFF relocation. */
2963 Elf_Internal_Rela outrel;
2964 asection *sreloc;
2965 bfd_byte *loc;
2966 int indx;
2967
2968 outrel.r_offset = rel->r_offset
2969 + input_section->output_section->vma
2970 + input_section->output_offset;
2971 if (h != NULL && h->dynindx != -1)
2972 indx = h->dynindx;
2973 else
2974 indx = 0;
2975 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2976 if (indx == 0)
2977 outrel.r_addend = relocation - dtpoff_base (info);
2978 else
2979 outrel.r_addend = 0;
2980 sreloc = elf_section_data (input_section)->sreloc;
2981 if (sreloc == NULL)
2982 abort ();
2983 loc = sreloc->contents;
2984 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2985 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2986 }
2987 else
2988 {
2989 BFD_ASSERT (! unresolved_reloc);
2990 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2991 contents + rel->r_offset);
2992 }
2993 continue;
2994
2995 case R_390_TLS_LDO64:
0e1862bb 2996 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 2997 relocation -= dtpoff_base (info);
2998 else
2999 /* When converting LDO to LE, we must negate. */
3000 relocation = -tpoff (info, relocation);
3001 break;
3002
3003 /* Relocations for tls instructions. */
3004 case R_390_TLS_LOAD:
3005 case R_390_TLS_GDCALL:
3006 case R_390_TLS_LDCALL:
3007 tls_type = GOT_UNKNOWN;
3008 if (h == NULL && local_got_offsets)
3009 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3010 else if (h != NULL)
3011 tls_type = elf_s390_hash_entry(h)->tls_type;
3012
3013 if (tls_type == GOT_TLS_GD)
3014 continue;
3015
3016 if (r_type == R_390_TLS_LOAD)
3017 {
0e1862bb 3018 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3019 {
3020 /* IE->LE transition. Four valid cases:
3021 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3022 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3023 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3024 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3025 unsigned int insn0, insn1, ry;
3026
3027 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3028 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3029 if (insn1 != 0x0004)
3704e358
AK		 3030 {
3031 invalid_tls_insn (input_bfd, input_section, rel);
3032 return FALSE;
3033 }
69fc87f1
MS		 3034 if ((insn0 & 0xff00f000) == 0xe3000000)
3035 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3036 ry = (insn0 & 0x000f0000);
3037 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3038 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3039 ry = (insn0 & 0x0000f000) << 4;
3040 else if ((insn0 & 0xff00f000) == 0xe300c000)
3041 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3042 ry = (insn0 & 0x000f0000);
3043 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3044 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3045 ry = (insn0 & 0x0000f000) << 4;
3046 else
3704e358
AK		 3047 {
3048 invalid_tls_insn (input_bfd, input_section, rel);
3049 return FALSE;
3050 }
69fc87f1
MS		 3051 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3052 insn1 = 0x000d;
3053 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3054 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3055 }
3056 }
3057 else if (r_type == R_390_TLS_GDCALL)
3058 {
3059 unsigned int insn0, insn1;
3060
3061 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3062 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3063 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3064 {
3065 invalid_tls_insn (input_bfd, input_section, rel);
3066 return FALSE;
3067 }
0e1862bb 3068 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3069 {
3070 /* GD->LE transition.
3071 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3072 insn0 = 0xc0040000;
3073 insn1 = 0x0000;
3074 }
3075 else
3076 {
3077 /* GD->IE transition.
3078 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3079 insn0 = 0xe322c000;
3080 insn1 = 0x0004;
3081 }
3082 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3083 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3084 }
3085 else if (r_type == R_390_TLS_LDCALL)
3086 {
0e1862bb 3087 if (!bfd_link_pic (info))
69fc87f1
MS		 3088 {
3089 unsigned int insn0, insn1;
3090
3091 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3092 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3093 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3094 {
3095 invalid_tls_insn (input_bfd, input_section, rel);
3096 return FALSE;
3097 }
69fc87f1
MS		 3098 /* LD->LE transition.
3099 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3100 insn0 = 0xc0040000;
3101 insn1 = 0x0000;
3102 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3103 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3104 }
3105 }
3106 continue;
3107
947216bf
AM		 3108 default:
3109 break;
3110 }
a85d7ed0 3111
239e1f3a
AM		 3112 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3113 because such sections are not SEC_ALLOC and thus ld.so will
3114 not process them. */
0451c93c 3115 if (unresolved_reloc
239e1f3a 3116 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3117 && h->def_dynamic)
3118 && _bfd_elf_section_offset (output_bfd, info, input_section,
3119 rel->r_offset) != (bfd_vma) -1)
4eca0228 3120 _bfd_error_handler
695344c0 3121 /* xgettext:c-format */
d42c267e 3122 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3123 input_bfd,
3124 input_section,
d42c267e 3125 rel->r_offset,
843fe662 3126 howto->name,
0451c93c
MS		 3127 h->root.root.string);
3128
470b557a
AK		 3129 do_relocation:
3130
fb798c50
AK		 3131 /* When applying a 24 bit reloc we need to start one byte
3132 earlier. Otherwise the 32 bit get/put bfd operations might
3133 access a byte after the actual section. */
3134 if (r_type == R_390_PC24DBL
3135 || r_type == R_390_PLT24DBL)
3136 rel->r_offset--;
3137
bd1ea41b
MS		 3138 if (r_type == R_390_20
3139 || r_type == R_390_GOT20
3140 || r_type == R_390_GOTPLT20
3141 || r_type == R_390_TLS_GOTIE20)
3142 {
3143 relocation += rel->r_addend;
3144 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3145 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3146 contents, rel->r_offset,
3147 relocation, 0);
3148 }
3149 else
3150 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3151 contents, rel->r_offset,
3152 relocation, rel->r_addend);
3153
3154 if (r != bfd_reloc_ok)
3155 {
0451c93c 3156 const char *name;
ec338859 3157
0451c93c
MS		 3158 if (h != NULL)
3159 name = h->root.root.string;
3160 else
a85d7ed0 3161 {
0451c93c
MS		 3162 name = bfd_elf_string_from_elf_section (input_bfd,
3163 symtab_hdr->sh_link,
3164 sym->st_name);
3165 if (name == NULL)
b34976b6 3166 return FALSE;
0451c93c
MS		 3167 if (*name == '\0')
3168 name = bfd_section_name (input_bfd, sec);
3169 }
ec338859 3170
0451c93c 3171 if (r == bfd_reloc_overflow)
1a72702b
AM		 3172 (*info->callbacks->reloc_overflow)
3173 (info, (h ? &h->root : NULL), name, howto->name,
3174 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3175 else
3176 {
4eca0228 3177 _bfd_error_handler
695344c0 3178 /* xgettext:c-format */
d42c267e 3179 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3180 input_bfd, input_section,
d42c267e 3181 rel->r_offset, name, (int) r);
b34976b6 3182 return FALSE;
a85d7ed0
NC		 3183 }
3184 }
3185 }
3186
b34976b6 3187 return TRUE;
a85d7ed0
NC		 3188}
3189
470b557a
AK		 3190/* Generate the PLT slots together with the dynamic relocations needed
3191 for IFUNC symbols. */
3192
3193static void
3194elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3195 struct bfd_link_info *info,
3196 struct elf_link_hash_entry *h,
3197 struct elf_s390_link_hash_table *htab,
3198 bfd_vma plt_offset,
3199 bfd_vma resolver_address)
3200{
3201 bfd_vma plt_index;
3202 bfd_vma got_offset;
3203 Elf_Internal_Rela rela;
3204 bfd_byte *loc;
3205 asection *plt, *gotplt, *relplt;
3206
3207 if (htab->elf.iplt == NULL
3208 || htab->elf.igotplt == NULL
3209 || htab->elf.irelplt == NULL)
3210 abort ();
3211
3212 /* Index of the PLT slot within iplt section. */
3213 plt_index = plt_offset / PLT_ENTRY_SIZE;
3214 plt = htab->elf.iplt;
3215 /* Offset into the igot.plt section. */
3216 got_offset = plt_index * GOT_ENTRY_SIZE;
3217 gotplt = htab->elf.igotplt;
3218 relplt = htab->elf.irelplt;
3219
3220 /* Fill in the blueprint of a PLT. */
3221 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3222 PLT_ENTRY_SIZE);
3223
3224 /* Fixup the relative address to the GOT entry */
3225 bfd_put_32 (output_bfd,
3226 (gotplt->output_section->vma +
3227 gotplt->output_offset + got_offset
3228 - (plt->output_section->vma +
3229 plt->output_offset +
3230 plt_offset))/2,
3231 plt->contents + plt_offset + 2);
3232 /* Fixup the relative branch to PLT 0 */
3233 bfd_put_32 (output_bfd, - (plt->output_offset +
3234 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3235 plt->contents + plt_offset + 24);
3236 /* Fixup offset into .rela.plt section. */
3237 bfd_put_32 (output_bfd, relplt->output_offset +
3238 plt_index * sizeof (Elf64_External_Rela),
3239 plt->contents + plt_offset + 28);
3240
3241 /* Fill in the entry in the global offset table.
3242 Points to instruction after GOT offset. */
3243 bfd_put_64 (output_bfd,
3244 (plt->output_section->vma
3245 + plt->output_offset
3246 + plt_offset
3247 + 14),
3248 gotplt->contents + got_offset);
3249
3250 /* Fill in the entry in the .rela.plt section. */
3251 rela.r_offset = (gotplt->output_section->vma
3252 + gotplt->output_offset
3253 + got_offset);
3254
3255 if (!h
3256 || h->dynindx == -1
0e1862bb 3257 || ((bfd_link_executable (info)
470b557a
AK		 3258 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3259 && h->def_regular))
3260 {
3261 /* The symbol can be locally resolved. */
3262 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3263 rela.r_addend = resolver_address;
3264 }
3265 else
3266 {
3267 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3268 rela.r_addend = 0;
3269 }
3270
3271 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3272 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3273}
3274
3275
a85d7ed0
NC		 3276/* Finish up dynamic symbol handling. We set the contents of various
3277 dynamic sections here. */
3278
b34976b6 3279static bfd_boolean
4dfe6ac6
NC		 3280elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3281 struct bfd_link_info *info,
3282 struct elf_link_hash_entry *h,
3283 Elf_Internal_Sym *sym)
a85d7ed0 3284{
0451c93c 3285 struct elf_s390_link_hash_table *htab;
470b557a 3286 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3287
0451c93c 3288 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3289 if (htab == NULL)
3290 return FALSE;
a85d7ed0
NC		 3291
3292 if (h->plt.offset != (bfd_vma) -1)
3293 {
a85d7ed0 3294 bfd_vma plt_index;
0451c93c
MS		 3295 bfd_vma got_offset;
3296 Elf_Internal_Rela rela;
947216bf 3297 bfd_byte *loc;
a85d7ed0
NC		 3298
3299 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3300 it up. */
0a511368 3301 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3302 {
0a511368
AK		 3303 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3304 htab, h->plt.offset,
3305 eh->ifunc_resolver_address +
3306 eh->ifunc_resolver_section->output_offset +
3307 eh->ifunc_resolver_section->output_section->vma);
3308
3309 /* Do not return yet. Handling of explicit GOT slots of
3310 IFUNC symbols is below. */
470b557a
AK		 3311 }
3312 else
3313 {
3314 if (h->dynindx == -1
3315 || htab->elf.splt == NULL
3316 || htab->elf.sgotplt == NULL
3317 || htab->elf.srelplt == NULL)
3318 abort ();
a85d7ed0 3319
470b557a
AK		 3320 /* Calc. index no.
3321 Current offset - size first entry / entry size. */
3322 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3323
470b557a
AK		 3324 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3325 addr & GOT addr. */
3326 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3327
470b557a
AK		 3328 /* Fill in the blueprint of a PLT. */
3329 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3330 PLT_ENTRY_SIZE);
3331
3332 /* Fixup the relative address to the GOT entry */
3333 bfd_put_32 (output_bfd,
3334 (htab->elf.sgotplt->output_section->vma +
3335 htab->elf.sgotplt->output_offset + got_offset
3336 - (htab->elf.splt->output_section->vma +
3337 htab->elf.splt->output_offset +
3338 h->plt.offset))/2,
3339 htab->elf.splt->contents + h->plt.offset + 2);
3340 /* Fixup the relative branch to PLT 0 */
3341 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3342 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3343 htab->elf.splt->contents + h->plt.offset + 24);
3344 /* Fixup offset into .rela.plt section. */
3345 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3346 htab->elf.splt->contents + h->plt.offset + 28);
3347
3348 /* Fill in the entry in the global offset table.
3349 Points to instruction after GOT offset. */
3350 bfd_put_64 (output_bfd,
3351 (htab->elf.splt->output_section->vma
3352 + htab->elf.splt->output_offset
3353 + h->plt.offset
3354 + 14),
3355 htab->elf.sgotplt->contents + got_offset);
3356
3357 /* Fill in the entry in the .rela.plt section. */
3358 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3359 + htab->elf.sgotplt->output_offset
3360 + got_offset);
3361 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3362 rela.r_addend = 0;
3363 loc = htab->elf.srelplt->contents + plt_index *
3364 sizeof (Elf64_External_Rela);
3365 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3366
3367 if (!h->def_regular)
3368 {
3369 /* Mark the symbol as undefined, rather than as defined in
3370 the .plt section. Leave the value alone. This is a clue
3371 for the dynamic linker, to make function pointer
3372 comparisons work between an application and shared
3373 library. */
3374 sym->st_shndx = SHN_UNDEF;
3375 }
a85d7ed0
NC		 3376 }
3377 }
3378
69fc87f1
MS		 3379 if (h->got.offset != (bfd_vma) -1
3380 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3381 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3382 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3383 {
a85d7ed0 3384 Elf_Internal_Rela rela;
947216bf 3385 bfd_byte *loc;
a85d7ed0
NC		 3386
3387 /* This symbol has an entry in the global offset table. Set it
947216bf 3388 up. */
f41345a7 3389 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3390 abort ();
a85d7ed0 3391
f41345a7
AK		 3392 rela.r_offset = (htab->elf.sgot->output_section->vma
3393 + htab->elf.sgot->output_offset
dc810e39 3394 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3395
470b557a
AK		 3396 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3397 {
0e1862bb 3398 if (bfd_link_pic (info))
470b557a
AK		 3399 {
3400 /* An explicit GOT slot usage needs GLOB_DAT. If the
3401 symbol references local the implicit got.iplt slot
3402 will be used and the IRELATIVE reloc has been created
3403 above. */
3404 goto do_glob_dat;
3405 }
3406 else
3407 {
3408 /* For non-shared objects explicit GOT slots must be
3409 filled with the PLT slot address for pointer
3410 equality reasons. */
3411 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3412 + htab->elf.iplt->output_offset
3413 + h->plt.offset),
3414 htab->elf.sgot->contents + h->got.offset);
3415 return TRUE;
3416 }
3417 }
0e1862bb 3418 else if (bfd_link_pic (info)
ceada896 3419 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3420 {
470b557a
AK		 3421 /* If this is a static link, or it is a -Bsymbolic link and
3422 the symbol is defined locally or was forced to be local
3423 because of a version file, we just want to emit a
3424 RELATIVE reloc. The entry in the global offset table
3425 will already have been initialized in the
3426 relocate_section function. */
8170f769 3427 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3428 return FALSE;
0451c93c 3429 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3430 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3431 rela.r_addend = (h->root.u.def.value
3432 + h->root.u.def.section->output_section->vma
3433 + h->root.u.def.section->output_offset);
3434 }
a85d7ed0
NC		 3435 else
3436 {
3437 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3438 do_glob_dat:
f41345a7 3439 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3440 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3441 rela.r_addend = 0;
3442 }
a85d7ed0 3443
f41345a7
AK		 3444 loc = htab->elf.srelgot->contents;
3445 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3446 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3447 }
3448
f5385ebf 3449 if (h->needs_copy)
a85d7ed0 3450 {
a85d7ed0 3451 Elf_Internal_Rela rela;
5474d94f 3452 asection *s;
947216bf 3453 bfd_byte *loc;
a85d7ed0
NC		 3454
3455 /* This symbols needs a copy reloc. Set it up. */
3456
0451c93c
MS		 3457 if (h->dynindx == -1
3458 || (h->root.type != bfd_link_hash_defined
3459 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3460 || htab->elf.srelbss == NULL)
0451c93c 3461 abort ();
a85d7ed0
NC		 3462
3463 rela.r_offset = (h->root.u.def.value
3464 + h->root.u.def.section->output_section->vma
3465 + h->root.u.def.section->output_offset);
3466 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3467 rela.r_addend = 0;
afbf7e8e 3468 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3469 s = htab->elf.sreldynrelro;
3470 else
3471 s = htab->elf.srelbss;
3472 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3473 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3474 }
3475
3476 /* Mark some specially defined symbols as absolute. */
9637f6ef 3477 if (h == htab->elf.hdynamic
22edb2f1
RS		 3478 || h == htab->elf.hgot
3479 || h == htab->elf.hplt)
a85d7ed0
NC		 3480 sym->st_shndx = SHN_ABS;
3481
b34976b6 3482 return TRUE;
a85d7ed0
NC		 3483}
3484
0451c93c
MS		 3485/* Used to decide how to sort relocs in an optimal manner for the
3486 dynamic linker, before writing them out. */
3487
3488static enum elf_reloc_type_class
7e612e98
AM		 3489elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3490 const asection *rel_sec ATTRIBUTE_UNUSED,
3491 const Elf_Internal_Rela *rela)
0451c93c 3492{
0f042c67
AK		 3493 bfd *abfd = info->output_bfd;
3494 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3495 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3496 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3497 Elf_Internal_Sym sym;
3498
3499 if (htab->elf.dynsym == NULL
3500 || !bed->s->swap_symbol_in (abfd,
3501 (htab->elf.dynsym->contents
3502 + r_symndx * bed->s->sizeof_sym),
3503 0, &sym))
3504 abort ();
3505
3506 /* Check relocation against STT_GNU_IFUNC symbol. */
3507 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3508 return reloc_class_ifunc;
3509
0451c93c
MS		 3510 switch ((int) ELF64_R_TYPE (rela->r_info))
3511 {
3512 case R_390_RELATIVE:
3513 return reloc_class_relative;
3514 case R_390_JMP_SLOT:
3515 return reloc_class_plt;
3516 case R_390_COPY:
3517 return reloc_class_copy;
3518 default:
3519 return reloc_class_normal;
3520 }
3521}
3522
a85d7ed0
NC		 3523/* Finish up the dynamic sections. */
3524
b34976b6 3525static bfd_boolean
4dfe6ac6
NC		 3526elf_s390_finish_dynamic_sections (bfd *output_bfd,
3527 struct bfd_link_info *info)
a85d7ed0 3528{
0451c93c 3529 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3530 bfd *dynobj;
3531 asection *sdyn;
470b557a
AK		 3532 bfd *ibfd;
3533 unsigned int i;
a85d7ed0 3534
0451c93c 3535 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3536 if (htab == NULL)
3537 return FALSE;
3538
0451c93c 3539 dynobj = htab->elf.dynobj;
3d4d4302 3540 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3541
0451c93c 3542 if (htab->elf.dynamic_sections_created)
a85d7ed0 3543 {
a85d7ed0
NC		 3544 Elf64_External_Dyn *dyncon, *dynconend;
3545
f41345a7 3546 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3547 abort ();
a85d7ed0
NC		 3548
3549 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3550 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3551 for (; dyncon < dynconend; dyncon++)
3552 {
3553 Elf_Internal_Dyn dyn;
a85d7ed0 3554 asection *s;
ec338859 3555
a85d7ed0 3556 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3557
a85d7ed0
NC		 3558 switch (dyn.d_tag)
3559 {
3560 default:
0451c93c 3561 continue;
ec338859 3562
a85d7ed0 3563 case DT_PLTGOT:
4ade44b7
AM		 3564 s = htab->elf.sgotplt;
3565 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3566 break;
ec338859 3567
a85d7ed0 3568 case DT_JMPREL:
4ade44b7
AM		 3569 s = htab->elf.srelplt;
3570 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3571 break;
ec338859 3572
a85d7ed0 3573 case DT_PLTRELSZ:
79c12fae
AK		 3574 dyn.d_un.d_val = htab->elf.srelplt->size;
3575 if (htab->elf.irelplt)
3576 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3577 break;
ec338859 3578
a85d7ed0
NC		 3579 case DT_RELASZ:
3580 /* The procedure linkage table relocs (DT_JMPREL) should
3581 not be included in the overall relocs (DT_RELA).
3582 Therefore, we override the DT_RELASZ entry here to
3583 make it not include the JMPREL relocs. Since the
3584 linker script arranges for .rela.plt to follow all
3585 other relocation sections, we don't have to worry
3586 about changing the DT_RELA entry. */
79c12fae
AK		 3587 dyn.d_un.d_val -= htab->elf.srelplt->size;
3588 if (htab->elf.irelplt)
3589 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3590 break;
3591 }
0451c93c
MS		 3592
3593 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3594 }
3595
3596 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3597 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3598 {
3599 /* fill in blueprint for plt 0 entry */
f41345a7 3600 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3601 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3602 /* Fixup relative address to start of GOT */
3603 bfd_put_32 (output_bfd,
161db279
AK		 3604 (htab->elf.sgotplt->output_section->vma
3605 + htab->elf.sgotplt->output_offset
3606 - htab->elf.splt->output_section->vma
3607 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3608 htab->elf.splt->contents + 8);
a85d7ed0 3609 }
387f8054
MR		 3610 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3611 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3612 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3613 }
3614
f41345a7 3615 if (htab->elf.sgotplt)
a85d7ed0 3616 {
0451c93c 3617 /* Fill in the first three entries in the global offset table. */
f41345a7 3618 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3619 {
3620 bfd_put_64 (output_bfd,
3621 (sdyn == NULL ? (bfd_vma) 0
3622 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3623 htab->elf.sgotplt->contents);
0451c93c 3624 /* One entry for shared object struct ptr. */
f41345a7 3625 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3626 /* One entry for _dl_runtime_resolve. */
3b67f094 3627 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
0451c93c 3628 }
a85d7ed0 3629
f41345a7 3630 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3631 ->this_hdr.sh_entsize = 8;
3632 }
470b557a
AK		 3633
3634 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3635 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3636 {
3637 struct plt_entry *local_plt;
3638 Elf_Internal_Sym *isym;
3639 Elf_Internal_Shdr *symtab_hdr;
3640
3641 symtab_hdr = &elf_symtab_hdr (ibfd);
3642
1ef692ea
AK		 3643 if (!is_s390_elf (ibfd))
3644 continue;
3645
470b557a
AK		 3646 local_plt = elf_s390_local_plt (ibfd);
3647 if (local_plt != NULL)
3648 for (i = 0; i < symtab_hdr->sh_info; i++)
3649 {
3650 if (local_plt[i].plt.offset != (bfd_vma) -1)
3651 {
3652 asection *sec = local_plt[i].sec;
3653 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3654 if (isym == NULL)
3655 return FALSE;
3656
3657 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3658 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3659 local_plt[i].plt.offset,
3660 isym->st_value
3661 + sec->output_section->vma
3662 + sec->output_offset);
3663
3664 }
3665 }
3666 }
3667
b34976b6 3668 return TRUE;
a85d7ed0 3669}
e3e9290d
AA		 3670\f
3671/* Support for core dump NOTE sections. */
a85d7ed0 3672
e3e9290d
AA		 3673static bfd_boolean
3674elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3675{
3676 int offset;
3677 size_t size;
3678
3679 switch (note->descsz)
3680 {
3681 default:
3682 return FALSE;
3683
3684 case 336: /* sizeof(struct elf_prstatus) on s390x */
3685 /* pr_cursig */
3686 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3687
3688 /* pr_pid */
3689 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3690
3691 /* pr_reg */
3692 offset = 112;
3693 size = 216;
3694 break;
3695 }
3696
3697 /* Make a ".reg/999" section. */
3698 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3699 size, note->descpos + offset);
3700}
3701
3702static bfd_boolean
3703elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3704{
3705 switch (note->descsz)
3706 {
3707 default:
3708 return FALSE;
3709
3710 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3711 elf_tdata (abfd)->core->pid
3712 = bfd_get_32 (abfd, note->descdata + 24);
3713 elf_tdata (abfd)->core->program
3714 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3715 elf_tdata (abfd)->core->command
3716 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3717 }
3718
3719 /* Note that for some reason, a spurious space is tacked
3720 onto the end of the args in some (at least one anyway)
3721 implementations, so strip it off if it exists. */
3722
3723 {
3724 char *command = elf_tdata (abfd)->core->command;
3725 int n = strlen (command);
3726
3727 if (0 < n && command[n - 1] == ' ')
3728 command[n - 1] = '\0';
3729 }
3730
3731 return TRUE;
3732}
3733
3734static char *
3735elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3736 int note_type, ...)
3737{
3738 va_list ap;
3739
3740 switch (note_type)
3741 {
3742 default:
3743 return NULL;
3744
3745 case NT_PRPSINFO:
3746 {
3747 char data[136] = { 0 };
3748 const char *fname, *psargs;
3749
3750 va_start (ap, note_type);
3751 fname = va_arg (ap, const char *);
3752 psargs = va_arg (ap, const char *);
3753 va_end (ap);
3754
3755 strncpy (data + 40, fname, 16);
3756 strncpy (data + 56, psargs, 80);
3757 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3758 &data, sizeof (data));
3759 }
3760
3761 case NT_PRSTATUS:
3762 {
3763 char data[336] = { 0 };
3764 long pid;
3765 int cursig;
3766 const void *gregs;
3767
3768 va_start (ap, note_type);
3769 pid = va_arg (ap, long);
3770 cursig = va_arg (ap, int);
3771 gregs = va_arg (ap, const void *);
3772 va_end (ap);
3773
3774 bfd_put_16 (abfd, cursig, data + 12);
3775 bfd_put_32 (abfd, pid, data + 32);
3776 memcpy (data + 112, gregs, 216);
3777 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3778 &data, sizeof (data));
3779 }
3780 }
3781 /* NOTREACHED */
3782}
3783\f
4c45e5c9
JJ		 3784/* Return address for Ith PLT stub in section PLT, for relocation REL
3785 or (bfd_vma) -1 if it should not be included. */
3786
3787static bfd_vma
3788elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3789 const arelent *rel ATTRIBUTE_UNUSED)
3790{
3791 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3792}
3793
643f7afb
AK		 3794/* Merge backend specific data from an object file to the output
3795 object file when linking. */
3796
3797static bfd_boolean
50e03d47 3798elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3799{
50e03d47 3800 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3801 return TRUE;
3802
50e03d47 3803 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3804}
3805
b4cbbe8f
AK		 3806/* We may add a PT_S390_PGSTE program header. */
3807
3808static int
3809elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3810 struct bfd_link_info *info)
3811{
3812 struct elf_s390_link_hash_table *htab;
3813
93ec5e23
AK		 3814 if (info)
3815 {
3816 htab = elf_s390_hash_table (info);
3817 if (htab)
3818 return htab->params->pgste;
3819 }
3820 return 0;
b4cbbe8f
AK		 3821}
3822
3823
3824/* Add the PT_S390_PGSTE program header. */
3825
3826static bfd_boolean
93ec5e23 3827elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 3828{
3829 struct elf_s390_link_hash_table *htab;
3830 struct elf_segment_map *m, *pm = NULL;
3831
93ec5e23
AK		 3832 if (!abfd || !info)
3833 return TRUE;
3834
b4cbbe8f 3835 htab = elf_s390_hash_table (info);
93ec5e23 3836 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 3837 return TRUE;
3838
3839 /* If there is already a PT_S390_PGSTE header, avoid adding
3840 another. */
3841 m = elf_seg_map (abfd);
3842 while (m && m->p_type != PT_S390_PGSTE)
3843 {
3844 pm = m;
3845 m = m->next;
3846 }
3847
3848 if (m)
3849 return TRUE;
3850
3851 m = (struct elf_segment_map *)
3852 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3853 if (m == NULL)
3854 return FALSE;
3855 m->p_type = PT_S390_PGSTE;
3856 m->count = 0;
3857 m->next = NULL;
3858 if (pm)
3859 pm->next = m;
3860
3861 return TRUE;
3862}
3863
3864bfd_boolean
3865bfd_elf_s390_set_options (struct bfd_link_info *info,
3866 struct s390_elf_params *params)
3867{
3868 struct elf_s390_link_hash_table *htab;
3869
93ec5e23
AK		 3870 if (info)
3871 {
3872 htab = elf_s390_hash_table (info);
3873 if (htab)
3874 htab->params = params;
3875 }
b4cbbe8f
AK		 3876
3877 return TRUE;
3878}
3879
3880
ae9a127f
NC		 3881/* Why was the hash table entry size definition changed from
3882 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3883 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3884
3885const struct elf_size_info s390_elf64_size_info =
3886{
3887 sizeof (Elf64_External_Ehdr),
3888 sizeof (Elf64_External_Phdr),
3889 sizeof (Elf64_External_Shdr),
3890 sizeof (Elf64_External_Rel),
3891 sizeof (Elf64_External_Rela),
3892 sizeof (Elf64_External_Sym),
3893 sizeof (Elf64_External_Dyn),
3894 sizeof (Elf_External_Note),
ae9a127f
NC		 3895 8, /* hash-table entry size. */
3896 1, /* internal relocations per external relocations. */
3897 64, /* arch_size. */
45d6a902 3898 3, /* log_file_align. */
a85d7ed0
NC		 3899 ELFCLASS64, EV_CURRENT,
3900 bfd_elf64_write_out_phdrs,
3901 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3902 bfd_elf64_checksum_contents,
a85d7ed0 3903 bfd_elf64_write_relocs,
73ff0d56 3904 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3905 bfd_elf64_swap_symbol_out,
3906 bfd_elf64_slurp_reloc_table,
3907 bfd_elf64_slurp_symbol_table,
3908 bfd_elf64_swap_dyn_in,
3909 bfd_elf64_swap_dyn_out,
947216bf
AM		 3910 bfd_elf64_swap_reloc_in,
3911 bfd_elf64_swap_reloc_out,
3912 bfd_elf64_swap_reloca_in,
3913 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3914};
3915
6d00b590 3916#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3917#define TARGET_BIG_NAME "elf64-s390"
3918#define ELF_ARCH bfd_arch_s390
ae95ffa6 3919#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3920#define ELF_MACHINE_CODE EM_S390
3921#define ELF_MACHINE_ALT1 EM_S390_OLD
3922#define ELF_MAXPAGESIZE 0x1000
3923
3924#define elf_backend_size_info s390_elf64_size_info
3925
3926#define elf_backend_can_gc_sections 1
51b64d56 3927#define elf_backend_can_refcount 1
a85d7ed0
NC		 3928#define elf_backend_want_got_plt 1
3929#define elf_backend_plt_readonly 1
3930#define elf_backend_want_plt_sym 0
3931#define elf_backend_got_header_size 24
5474d94f 3932#define elf_backend_want_dynrelro 1
b491616a 3933#define elf_backend_rela_normal 1
a85d7ed0
NC		 3934
3935#define elf_info_to_howto elf_s390_info_to_howto
3936
a85d7ed0
NC		 3937#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3938#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3939#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
643f7afb
AK		 3940#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3941#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 3942
3943#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3944#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3945#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 3946#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 3947#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3948#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3949#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 3950#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3951#define elf_backend_relocate_section elf_s390_relocate_section
3952#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3953#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 3954#define elf_backend_grok_prstatus elf_s390_grok_prstatus
3955#define elf_backend_grok_psinfo elf_s390_grok_psinfo
3956#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 3957#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3958#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 3959#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
b4cbbe8f
AK		 3960#define elf_backend_additional_program_headers elf_s390_additional_program_headers
3961#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 3962
69fc87f1
MS		 3963#define bfd_elf64_mkobject elf_s390_mkobject
3964#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3965
3966#include "elf64-target.h"
Empty description
This page took 2.365229 seconds and 4 git commands to generate.