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s390: Check UNDEFWEAK_NO_DYNAMIC_RELOC
[deliverable/binutils-gdb.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 (schwidefsky@de.ibm.com).
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
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
1336/* Update the got entry reference counts for the section being removed. */
1337
b34976b6 1338static bfd_boolean
07adf181
AM		 1339elf_s390_gc_sweep_hook (bfd *abfd,
1340 struct bfd_link_info *info,
1341 asection *sec,
1342 const Elf_Internal_Rela *relocs)
a85d7ed0 1343{
4dfe6ac6 1344 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1345 Elf_Internal_Shdr *symtab_hdr;
1346 struct elf_link_hash_entry **sym_hashes;
1347 bfd_signed_vma *local_got_refcounts;
1348 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1349
0e1862bb 1350 if (bfd_link_relocatable (info))
7dda2462
TG		 1351 return TRUE;
1352
4dfe6ac6
NC		 1353 htab = elf_s390_hash_table (info);
1354 if (htab == NULL)
1355 return FALSE;
1356
ec338859 1357 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1358
0ffa91dd 1359 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1360 sym_hashes = elf_sym_hashes (abfd);
1361 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1362
1363 relend = relocs + sec->reloc_count;
1364 for (rel = relocs; rel < relend; rel++)
5236c819 1365 {
26e41594
AM		 1366 unsigned long r_symndx;
1367 unsigned int r_type;
1368 struct elf_link_hash_entry *h = NULL;
1369
5236c819 1370 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1371 if (r_symndx >= symtab_hdr->sh_info)
1372 {
1373 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1374 struct elf_dyn_relocs **pp;
1375 struct elf_dyn_relocs *p;
5236c819 1376
26e41594 1377 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1378 while (h->root.type == bfd_link_hash_indirect
1379 || h->root.type == bfd_link_hash_warning)
1380 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1381 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1382
26e41594
AM		 1383 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1384 if (p->sec == sec)
1385 {
1386 /* Everything must go for SEC. */
1387 *pp = p->next;
1388 break;
1389 }
1390 }
470b557a
AK		 1391 else
1392 {
1393 Elf_Internal_Sym *isym;
1394
1395 /* A local symbol. */
1396 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1397 abfd, r_symndx);
1398 if (isym == NULL)
1399 return FALSE;
1400
1401 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1402 {
1403 struct plt_entry *plt = elf_s390_local_plt (abfd);
1404 if (plt[r_symndx].plt.refcount > 0)
1405 plt[r_symndx].plt.refcount--;
1406 }
1407 }
26e41594
AM		 1408
1409 r_type = ELF64_R_TYPE (rel->r_info);
1410 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1411 switch (r_type)
5236c819 1412 {
69fc87f1 1413 case R_390_TLS_LDM64:
4dfe6ac6
NC		 1414 if (htab->tls_ldm_got.refcount > 0)
1415 htab->tls_ldm_got.refcount -= 1;
69fc87f1 1416 break;
ef05be83
AK		 1417 case R_390_GOTOFF16:
1418 case R_390_GOTOFF32:
1419 case R_390_GOTOFF64:
d47b13e0
AK		 1420 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1421 {
1422 h->plt.refcount--;
1423 break;
1424 }
1425
ef05be83
AK		 1426 case R_390_GOTPC:
1427 case R_390_GOTPCDBL:
1428 break;
69fc87f1
MS		 1429
1430 case R_390_TLS_GD64:
1431 case R_390_TLS_IE64:
1432 case R_390_TLS_GOTIE12:
bd1ea41b 1433 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1434 case R_390_TLS_GOTIE64:
1435 case R_390_TLS_IEENT:
5236c819
MS		 1436 case R_390_GOT12:
1437 case R_390_GOT16:
bd1ea41b 1438 case R_390_GOT20:
5236c819
MS		 1439 case R_390_GOT32:
1440 case R_390_GOT64:
5236c819
MS		 1441 case R_390_GOTENT:
1442 if (h != NULL)
1443 {
1444 if (h->got.refcount > 0)
1445 h->got.refcount -= 1;
1446 }
1447 else if (local_got_refcounts != NULL)
1448 {
1449 if (local_got_refcounts[r_symndx] > 0)
1450 local_got_refcounts[r_symndx] -= 1;
1451 }
26e41594 1452 break;
a85d7ed0 1453
5236c819
MS		 1454 case R_390_8:
1455 case R_390_12:
1456 case R_390_16:
bd1ea41b 1457 case R_390_20:
5236c819
MS		 1458 case R_390_32:
1459 case R_390_64:
1460 case R_390_PC16:
fb798c50 1461 case R_390_PC12DBL:
5236c819 1462 case R_390_PC16DBL:
fb798c50 1463 case R_390_PC24DBL:
5236c819
MS		 1464 case R_390_PC32:
1465 case R_390_PC32DBL:
1466 case R_390_PC64:
0e1862bb 1467 if (bfd_link_pic (info))
26e41594
AM		 1468 break;
1469 /* Fall through */
a85d7ed0 1470
fb798c50 1471 case R_390_PLT12DBL:
69fc87f1 1472 case R_390_PLT16DBL:
fb798c50 1473 case R_390_PLT24DBL:
69fc87f1
MS		 1474 case R_390_PLT32:
1475 case R_390_PLT32DBL:
1476 case R_390_PLT64:
1477 case R_390_PLTOFF16:
1478 case R_390_PLTOFF32:
1479 case R_390_PLTOFF64:
1480 if (h != NULL)
1481 {
1482 if (h->plt.refcount > 0)
1483 h->plt.refcount -= 1;
1484 }
1485 break;
1486
1487 case R_390_GOTPLT12:
1488 case R_390_GOTPLT16:
bd1ea41b 1489 case R_390_GOTPLT20:
69fc87f1
MS		 1490 case R_390_GOTPLT32:
1491 case R_390_GOTPLT64:
1492 case R_390_GOTPLTENT:
1493 if (h != NULL)
1494 {
1495 if (h->plt.refcount > 0)
1496 {
1497 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1498 h->plt.refcount -= 1;
1499 }
1500 }
1501 else if (local_got_refcounts != NULL)
1502 {
1503 if (local_got_refcounts[r_symndx] > 0)
1504 local_got_refcounts[r_symndx] -= 1;
1505 }
1506 break;
1507
5236c819
MS		 1508 default:
1509 break;
1510 }
1511 }
a85d7ed0 1512
b34976b6 1513 return TRUE;
a85d7ed0
NC		 1514}
1515
5236c819
MS		 1516/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1517 entry but we found we will not create any. Called when we find we will
1518 not have any PLT for this symbol, by for example
1519 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1520 or elf_s390_size_dynamic_sections if no dynamic sections will be
1521 created (we're only linking static objects). */
1522
1523static void
2c3fc389 1524elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1525{
1526 if (h->elf.root.type == bfd_link_hash_warning)
1527 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1528
1529 if (h->gotplt_refcount <= 0)
1530 return;
1531
1532 /* We simply add the number of gotplt references to the number
1533 * of got references for this symbol. */
1534 h->elf.got.refcount += h->gotplt_refcount;
1535 h->gotplt_refcount = -1;
1536}
1537
a85d7ed0
NC		 1538/* Adjust a symbol defined by a dynamic object and referenced by a
1539 regular object. The current definition is in some section of the
1540 dynamic object, but we're not including those sections. We have to
1541 change the definition to something the rest of the link can
1542 understand. */
1543
b34976b6 1544static bfd_boolean
4dfe6ac6
NC		 1545elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1546 struct elf_link_hash_entry *h)
a85d7ed0 1547{
0451c93c 1548 struct elf_s390_link_hash_table *htab;
5474d94f 1549 asection *s, *srel;
a85d7ed0 1550
470b557a
AK		 1551 /* STT_GNU_IFUNC symbol must go through PLT. */
1552 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1553 {
1554 /* All local STT_GNU_IFUNC references must be treated as local
1555 calls via local PLT. */
1556 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1557 {
1558 bfd_size_type pc_count = 0, count = 0;
1559 struct elf_dyn_relocs **pp;
1560 struct elf_s390_link_hash_entry *eh;
1561 struct elf_dyn_relocs *p;
1562
1563 eh = (struct elf_s390_link_hash_entry *) h;
1564 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1565 {
1566 pc_count += p->pc_count;
1567 p->count -= p->pc_count;
1568 p->pc_count = 0;
1569 count += p->count;
1570 if (p->count == 0)
1571 *pp = p->next;
1572 else
1573 pp = &p->next;
1574 }
1575
1576 if (pc_count || count)
1577 {
1578 h->needs_plt = 1;
1579 h->non_got_ref = 1;
1580 if (h->plt.refcount <= 0)
1581 h->plt.refcount = 1;
1582 else
1583 h->plt.refcount += 1;
1584 }
1585 }
1586
1587 if (h->plt.refcount <= 0)
1588 {
1589 h->plt.offset = (bfd_vma) -1;
1590 h->needs_plt = 0;
1591 }
1592 return TRUE;
1593 }
470b557a 1594
a85d7ed0
NC		 1595 /* If this is a function, put it in the procedure linkage table. We
1596 will fill in the contents of the procedure linkage table later
cedb70c5 1597 (although we could actually do it here). */
a85d7ed0 1598 if (h->type == STT_FUNC
f5385ebf 1599 || h->needs_plt)
a85d7ed0 1600 {
0451c93c 1601 if (h->plt.refcount <= 0
8c21ca21
AK		 1602 || SYMBOL_CALLS_LOCAL (info, h)
1603 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1604 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1605 {
1606 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1607 file, but the symbol was never referred to by a dynamic
1608 object, or if all references were garbage collected. In
0451c93c
MS		 1609 such a case, we don't actually need to build a procedure
1610 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1611 h->plt.offset = (bfd_vma) -1;
f5385ebf 1612 h->needs_plt = 0;
5236c819 1613 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1614 }
1615
b34976b6 1616 return TRUE;
a85d7ed0 1617 }
bbd7ec4a 1618 else
0451c93c
MS		 1619 /* It's possible that we incorrectly decided a .plt reloc was
1620 needed for an R_390_PC32 reloc to a non-function sym in
1621 check_relocs. We can't decide accurately between function and
1622 non-function syms in check-relocs; Objects loaded later in
1623 the link may change h->type. So fix it now. */
bbd7ec4a 1624 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1625
1626 /* If this is a weak symbol, and there is a real definition, the
1627 processor independent code will have arranged for us to see the
1628 real definition first, and we can just use the same value. */
f6e332e6 1629 if (h->u.weakdef != NULL)
a85d7ed0 1630 {
f6e332e6
AM		 1631 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1632 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1633 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1634 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1635 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1636 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1637 return TRUE;
a85d7ed0
NC		 1638 }
1639
1640 /* This is a reference to a symbol defined by a dynamic object which
1641 is not a function. */
1642
1643 /* If we are creating a shared library, we must presume that the
1644 only references to the symbol are via the global offset table.
1645 For such cases we need not do anything here; the relocations will
1646 be handled correctly by relocate_section. */
0e1862bb 1647 if (bfd_link_pic (info))
b34976b6 1648 return TRUE;
a85d7ed0
NC		 1649
1650 /* If there are no references to this symbol that do not use the
1651 GOT, we don't need to generate a copy reloc. */
f5385ebf 1652 if (!h->non_got_ref)
b34976b6 1653 return TRUE;
a85d7ed0 1654
0451c93c
MS		 1655 /* If -z nocopyreloc was given, we won't generate them either. */
1656 if (info->nocopyreloc)
1657 {
f5385ebf 1658 h->non_got_ref = 0;
b34976b6 1659 return TRUE;
0451c93c
MS		 1660 }
1661
64285810 1662 if (ELIMINATE_COPY_RELOCS)
0451c93c 1663 {
64285810 1664 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1665 struct elf_dyn_relocs *p;
0451c93c 1666
64285810
MS		 1667 eh = (struct elf_s390_link_hash_entry *) h;
1668 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1669 {
1670 s = p->sec->output_section;
1671 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1672 break;
1673 }
1674
1675 /* If we didn't find any dynamic relocs in read-only sections, then
1676 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1677 if (p == NULL)
1678 {
f5385ebf 1679 h->non_got_ref = 0;
64285810
MS		 1680 return TRUE;
1681 }
0451c93c
MS		 1682 }
1683
a85d7ed0
NC		 1684 /* We must allocate the symbol in our .dynbss section, which will
1685 become part of the .bss section of the executable. There will be
1686 an entry for this symbol in the .dynsym section. The dynamic
1687 object will contain position independent code, so all references
1688 from the dynamic object to this symbol will go through the global
1689 offset table. The dynamic linker will use the .dynsym entry to
1690 determine the address it must put in the global offset table, so
1691 both the dynamic object and the regular object will refer to the
1692 same memory location for the variable. */
1693
0451c93c 1694 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1695 if (htab == NULL)
1696 return FALSE;
a85d7ed0 1697
0451c93c
MS		 1698 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1699 copy the initial value out of the dynamic object and into the
1700 runtime process image. */
5474d94f
AM		 1701 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1702 {
1703 s = htab->elf.sdynrelro;
1704 srel = htab->elf.sreldynrelro;
1705 }
1706 else
1707 {
1708 s = htab->elf.sdynbss;
1709 srel = htab->elf.srelbss;
1710 }
1d7e9d18 1711 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1712 {
5474d94f 1713 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1714 h->needs_copy = 1;
a85d7ed0
NC		 1715 }
1716
6cabe1ea 1717 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1718}
1719
0451c93c
MS		 1720/* Allocate space in .plt, .got and associated reloc sections for
1721 dynamic relocs. */
1722
b34976b6 1723static bfd_boolean
4dfe6ac6
NC		 1724allocate_dynrelocs (struct elf_link_hash_entry *h,
1725 void * inf)
0451c93c
MS		 1726{
1727 struct bfd_link_info *info;
1728 struct elf_s390_link_hash_table *htab;
470b557a 1729 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1730 struct elf_dyn_relocs *p;
0451c93c 1731
e92d460e 1732 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1733 return TRUE;
0451c93c
MS		 1734
1735 info = (struct bfd_link_info *) inf;
1736 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1737 if (htab == NULL)
1738 return FALSE;
0451c93c 1739
470b557a
AK		 1740 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1741 here if it is defined and referenced in a non-shared object. */
1742 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1743 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1744 else if (htab->elf.dynamic_sections_created
1745 && h->plt.refcount > 0)
0451c93c
MS		 1746 {
1747 /* Make sure this symbol is output as a dynamic symbol.
1748 Undefined weak syms won't yet be marked as dynamic. */
1749 if (h->dynindx == -1
f5385ebf 1750 && !h->forced_local)
0451c93c 1751 {
c152c796 1752 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1753 return FALSE;
0451c93c
MS		 1754 }
1755
0e1862bb 1756 if (bfd_link_pic (info)
4ec72bde 1757 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1758 {
f41345a7 1759 asection *s = htab->elf.splt;
0451c93c
MS		 1760
1761 /* If this is the first .plt entry, make room for the special
1762 first entry. */
eea6121a
AM		 1763 if (s->size == 0)
1764 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1765
eea6121a 1766 h->plt.offset = s->size;
0451c93c
MS		 1767
1768 /* If this symbol is not defined in a regular file, and we are
1769 not generating a shared library, then set the symbol to this
1770 location in the .plt. This is required to make function
1771 pointers compare as equal between the normal executable and
1772 the shared library. */
0e1862bb 1773 if (! bfd_link_pic (info)
f5385ebf 1774 && !h->def_regular)
0451c93c
MS		 1775 {
1776 h->root.u.def.section = s;
1777 h->root.u.def.value = h->plt.offset;
1778 }
ec338859 1779
0451c93c 1780 /* Make room for this entry. */
eea6121a 1781 s->size += PLT_ENTRY_SIZE;
ec338859 1782
0451c93c
MS		 1783 /* We also need to make an entry in the .got.plt section, which
1784 will be placed in the .got section by the linker script. */
f41345a7 1785 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1786
1787 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1788 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1789 }
1790 else
1791 {
1792 h->plt.offset = (bfd_vma) -1;
f5385ebf 1793 h->needs_plt = 0;
5236c819 1794 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1795 }
1796 }
1797 else
1798 {
1799 h->plt.offset = (bfd_vma) -1;
f5385ebf 1800 h->needs_plt = 0;
5236c819 1801 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1802 }
1803
69fc87f1
MS		 1804 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1805 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1806 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1807 we can save the dynamic TLS relocation. */
1808 if (h->got.refcount > 0
0e1862bb 1809 && !bfd_link_pic (info)
69fc87f1
MS		 1810 && h->dynindx == -1
1811 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1812 {
1813 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1814 /* For the GOTIE access without a literal pool entry the offset has
1815 to be stored somewhere. The immediate value in the instruction
1816 is not bit enough so the value is stored in the got. */
1817 {
f41345a7
AK		 1818 h->got.offset = htab->elf.sgot->size;
1819 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1820 }
1821 else
1822 h->got.offset = (bfd_vma) -1;
1823 }
1824 else if (h->got.refcount > 0)
0451c93c
MS		 1825 {
1826 asection *s;
b34976b6 1827 bfd_boolean dyn;
69fc87f1 1828 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1829
1830 /* Make sure this symbol is output as a dynamic symbol.
1831 Undefined weak syms won't yet be marked as dynamic. */
1832 if (h->dynindx == -1
f5385ebf 1833 && !h->forced_local)
0451c93c 1834 {
c152c796 1835 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1836 return FALSE;
0451c93c
MS		 1837 }
1838
f41345a7 1839 s = htab->elf.sgot;
eea6121a
AM		 1840 h->got.offset = s->size;
1841 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1842 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1843 if (tls_type == GOT_TLS_GD)
eea6121a 1844 s->size += GOT_ENTRY_SIZE;
0451c93c 1845 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1846 /* R_390_TLS_IE64 needs one dynamic relocation,
1847 R_390_TLS_GD64 needs one if local symbol and two if global. */
1848 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1849 || tls_type >= GOT_TLS_IE)
f41345a7 1850 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1851 else if (tls_type == GOT_TLS_GD)
f41345a7 1852 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1853 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1854 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1855 && (bfd_link_pic (info)
82058a73 1856 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1857 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1858 }
1859 else
1860 h->got.offset = (bfd_vma) -1;
1861
0451c93c 1862 if (eh->dyn_relocs == NULL)
b34976b6 1863 return TRUE;
0451c93c
MS		 1864
1865 /* In the shared -Bsymbolic case, discard space allocated for
1866 dynamic pc-relative relocs against symbols which turn out to be
1867 defined in regular objects. For the normal shared case, discard
1868 space for pc-relative relocs that have become local due to symbol
1869 visibility changes. */
1870
0e1862bb 1871 if (bfd_link_pic (info))
0451c93c 1872 {
8c21ca21 1873 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1874 {
00d8c7a9 1875 struct elf_dyn_relocs **pp;
0451c93c
MS		 1876
1877 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1878 {
1879 p->count -= p->pc_count;
1880 p->pc_count = 0;
1881 if (p->count == 0)
1882 *pp = p->next;
1883 else
1884 pp = &p->next;
1885 }
1886 }
82058a73
MS		 1887
1888 /* Also discard relocs on undefined weak syms with non-default
1889 visibility. */
22d606e9 1890 if (eh->dyn_relocs != NULL
82058a73 1891 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1892 {
b27bb18f
L		 1893 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1894 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
22d606e9
AM		 1895 eh->dyn_relocs = NULL;
1896
1897 /* Make sure undefined weak symbols are output as a dynamic
1898 symbol in PIEs. */
1899 else if (h->dynindx == -1
1900 && !h->forced_local)
1901 {
1902 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1903 return FALSE;
1904 }
1905 }
0451c93c 1906 }
64285810 1907 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1908 {
1909 /* For the non-shared case, discard space for relocs against
1910 symbols which turn out to need copy relocs or are not
1911 dynamic. */
1912
f5385ebf
AM		 1913 if (!h->non_got_ref
1914 && ((h->def_dynamic
1915 && !h->def_regular)
0451c93c
MS		 1916 || (htab->elf.dynamic_sections_created
1917 && (h->root.type == bfd_link_hash_undefweak
1918 || h->root.type == bfd_link_hash_undefined))))
1919 {
1920 /* Make sure this symbol is output as a dynamic symbol.
1921 Undefined weak syms won't yet be marked as dynamic. */
1922 if (h->dynindx == -1
f5385ebf 1923 && !h->forced_local)
0451c93c 1924 {
c152c796 1925 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1926 return FALSE;
0451c93c
MS		 1927 }
1928
1929 /* If that succeeded, we know we'll be keeping all the
1930 relocs. */
1931 if (h->dynindx != -1)
1932 goto keep;
1933 }
1934
1935 eh->dyn_relocs = NULL;
1936
ec338859 1937 keep: ;
0451c93c
MS		 1938 }
1939
1940 /* Finally, allocate space. */
1941 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1942 {
1943 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1944 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1945 }
1946
b34976b6 1947 return TRUE;
0451c93c
MS		 1948}
1949
1950/* Find any dynamic relocs that apply to read-only sections. */
1951
b34976b6 1952static bfd_boolean
2c3fc389 1953readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1954{
1955 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1956 struct elf_dyn_relocs *p;
0451c93c
MS		 1957
1958 eh = (struct elf_s390_link_hash_entry *) h;
1959 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1960 {
1961 asection *s = p->sec->output_section;
1962
1963 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1964 {
1965 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1966
1967 info->flags |= DF_TEXTREL;
1968
1969 /* Not an error, just cut short the traversal. */
b34976b6 1970 return FALSE;
0451c93c
MS		 1971 }
1972 }
b34976b6 1973 return TRUE;
0451c93c
MS		 1974}
1975
a85d7ed0
NC		 1976/* Set the sizes of the dynamic sections. */
1977
b34976b6 1978static bfd_boolean
4dfe6ac6
NC		 1979elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1980 struct bfd_link_info *info)
a85d7ed0 1981{
0451c93c 1982 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1983 bfd *dynobj;
1984 asection *s;
b34976b6 1985 bfd_boolean relocs;
0451c93c 1986 bfd *ibfd;
a85d7ed0 1987
0451c93c 1988 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1989 if (htab == NULL)
1990 return FALSE;
1991
0451c93c
MS		 1992 dynobj = htab->elf.dynobj;
1993 if (dynobj == NULL)
1994 abort ();
a85d7ed0 1995
0451c93c 1996 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1997 {
1998 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1999 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 2000 {
3d4d4302 2001 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2002 if (s == NULL)
2003 abort ();
eea6121a 2004 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2005 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2006 }
2007 }
a85d7ed0 2008
0451c93c
MS		 2009 /* Set up .got offsets for local syms, and space for local dynamic
2010 relocs. */
c72f2fb2 2011 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2012 {
0451c93c
MS		 2013 bfd_signed_vma *local_got;
2014 bfd_signed_vma *end_local_got;
69fc87f1 2015 char *local_tls_type;
0451c93c
MS		 2016 bfd_size_type locsymcount;
2017 Elf_Internal_Shdr *symtab_hdr;
2018 asection *srela;
470b557a
AK		 2019 struct plt_entry *local_plt;
2020 unsigned int i;
a85d7ed0 2021
0ffa91dd 2022 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2023 continue;
2024
0451c93c 2025 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2026 {
00d8c7a9 2027 struct elf_dyn_relocs *p;
0451c93c 2028
6edfbbad 2029 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2030 {
ec338859
AM		 2031 if (!bfd_is_abs_section (p->sec)
2032 && bfd_is_abs_section (p->sec->output_section))
2033 {
2034 /* Input section has been discarded, either because
2035 it is a copy of a linkonce section or due to
2036 linker script /DISCARD/, so we'll be discarding
2037 the relocs too. */
2038 }
248866a8 2039 else if (p->count != 0)
ec338859
AM		 2040 {
2041 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2042 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 2043 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2044 info->flags |= DF_TEXTREL;
ec338859 2045 }
a85d7ed0
NC		 2046 }
2047 }
0451c93c
MS		 2048
2049 local_got = elf_local_got_refcounts (ibfd);
2050 if (!local_got)
2051 continue;
2052
0ffa91dd 2053 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2054 locsymcount = symtab_hdr->sh_info;
2055 end_local_got = local_got + locsymcount;
69fc87f1 2056 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2057 s = htab->elf.sgot;
2058 srela = htab->elf.srelgot;
69fc87f1 2059 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2060 {
0451c93c 2061 if (*local_got > 0)
a85d7ed0 2062 {
eea6121a
AM		 2063 *local_got = s->size;
2064 s->size += GOT_ENTRY_SIZE;
69fc87f1 2065 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2066 s->size += GOT_ENTRY_SIZE;
0e1862bb 2067 if (bfd_link_pic (info))
eea6121a 2068 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2069 }
2070 else
0451c93c 2071 *local_got = (bfd_vma) -1;
a85d7ed0 2072 }
470b557a
AK		 2073
2074 local_plt = elf_s390_local_plt (ibfd);
2075 for (i = 0; i < symtab_hdr->sh_info; i++)
2076 {
2077 if (local_plt[i].plt.refcount > 0)
2078 {
2079 local_plt[i].plt.offset = htab->elf.iplt->size;
2080 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2081 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2082 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2083 }
2084 else
2085 local_plt[i].plt.offset = (bfd_vma) -1;
2086 }
0451c93c
MS		 2087 }
2088
69fc87f1
MS		 2089 if (htab->tls_ldm_got.refcount > 0)
2090 {
2091 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2092 relocs. */
f41345a7
AK		 2093 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2094 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2095 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2096 }
2097 else
2098 htab->tls_ldm_got.offset = -1;
2099
0451c93c
MS		 2100 /* Allocate global sym .plt and .got entries, and space for global
2101 sym dynamic relocs. */
2c3fc389 2102 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2103
2104 /* We now have determined the sizes of the various dynamic sections.
2105 Allocate memory for them. */
b34976b6 2106 relocs = FALSE;
0451c93c
MS		 2107 for (s = dynobj->sections; s != NULL; s = s->next)
2108 {
2109 if ((s->flags & SEC_LINKER_CREATED) == 0)
2110 continue;
2111
f41345a7
AK		 2112 if (s == htab->elf.splt
2113 || s == htab->elf.sgot
2114 || s == htab->elf.sgotplt
9d19e4fd 2115 || s == htab->elf.sdynbss
5474d94f 2116 || s == htab->elf.sdynrelro
470b557a
AK		 2117 || s == htab->elf.iplt
2118 || s == htab->elf.igotplt
2119 || s == htab->irelifunc)
0451c93c
MS		 2120 {
2121 /* Strip this section if we don't need it; see the
2122 comment below. */
2123 }
0112cd26 2124 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2125 {
f41345a7 2126 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2127 relocs = TRUE;
ec338859 2128
0451c93c
MS		 2129 /* We use the reloc_count field as a counter if we need
2130 to copy relocs into the output file. */
2131 s->reloc_count = 0;
2132 }
2133 else
a85d7ed0
NC		 2134 {
2135 /* It's not one of our sections, so don't allocate space. */
2136 continue;
2137 }
2138
eea6121a 2139 if (s->size == 0)
a85d7ed0 2140 {
0451c93c
MS		 2141 /* If we don't need this section, strip it from the
2142 output file. This is to handle .rela.bss and
2143 .rela.plt. We must create it in
2144 create_dynamic_sections, because it must be created
2145 before the linker maps input sections to output
2146 sections. The linker does that before
2147 adjust_dynamic_symbol is called, and it is that
2148 function which decides whether anything needs to go
2149 into these sections. */
2150
8423293d 2151 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2152 continue;
2153 }
2154
c456f082
AM		 2155 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2156 continue;
2157
0451c93c
MS		 2158 /* Allocate memory for the section contents. We use bfd_zalloc
2159 here in case unused entries are not reclaimed before the
2160 section's contents are written out. This should not happen,
2161 but this way if it does, we get a R_390_NONE reloc instead
2162 of garbage. */
eea6121a 2163 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2164 if (s->contents == NULL)
b34976b6 2165 return FALSE;
a85d7ed0
NC		 2166 }
2167
0451c93c 2168 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2169 {
2170 /* Add some entries to the .dynamic section. We fill in the
2171 values later, in elf_s390_finish_dynamic_sections, but we
2172 must add the entries now so that we get the correct size for
2173 the .dynamic section. The DT_DEBUG entry is filled in by the
2174 dynamic linker and used by the debugger. */
dc810e39 2175#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2176 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2177
0e1862bb 2178 if (bfd_link_executable (info))
a85d7ed0 2179 {
dc810e39 2180 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2181 return FALSE;
a85d7ed0
NC		 2182 }
2183
f41345a7 2184 if (htab->elf.splt->size != 0)
a85d7ed0 2185 {
dc810e39
AM		 2186 if (!add_dynamic_entry (DT_PLTGOT, 0)
2187 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2188 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2189 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2190 return FALSE;
a85d7ed0
NC		 2191 }
2192
2193 if (relocs)
947216bf
AM		 2194 {
2195 if (!add_dynamic_entry (DT_RELA, 0)
2196 || !add_dynamic_entry (DT_RELASZ, 0)
2197 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2198 return FALSE;
ec338859 2199
0451c93c
MS		 2200 /* If any dynamic relocs apply to a read-only section,
2201 then we need a DT_TEXTREL entry. */
248866a8
AM		 2202 if ((info->flags & DF_TEXTREL) == 0)
2203 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2204 info);
ec338859 2205
0451c93c
MS		 2206 if ((info->flags & DF_TEXTREL) != 0)
2207 {
2208 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2209 return FALSE;
0451c93c 2210 }
a85d7ed0
NC		 2211 }
2212 }
dc810e39 2213#undef add_dynamic_entry
a85d7ed0 2214
b34976b6 2215 return TRUE;
a85d7ed0
NC		 2216}
2217
69fc87f1
MS		 2218/* Return the base VMA address which should be subtracted from real addresses
2219 when resolving @dtpoff relocation.
2220 This is PT_TLS segment p_vaddr. */
2221
2222static bfd_vma
2c3fc389 2223dtpoff_base (struct bfd_link_info *info)
69fc87f1 2224{
e1918d23
AM		 2225 /* If tls_sec is NULL, we should have signalled an error already. */
2226 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2227 return 0;
e1918d23 2228 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2229}
2230
2231/* Return the relocation value for @tpoff relocation
2232 if STT_TLS virtual address is ADDRESS. */
2233
2234static bfd_vma
2c3fc389 2235tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2236{
e1918d23 2237 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2238
e1918d23
AM		 2239 /* If tls_sec is NULL, we should have signalled an error already. */
2240 if (htab->tls_sec == NULL)
69fc87f1 2241 return 0;
e1918d23 2242 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2243}
2244
2245/* Complain if TLS instruction relocation is against an invalid
2246 instruction. */
2247
2248static void
2c3fc389
NC		 2249invalid_tls_insn (bfd *input_bfd,
2250 asection *input_section,
2251 Elf_Internal_Rela *rel)
69fc87f1
MS		 2252{
2253 reloc_howto_type *howto;
2254
2255 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2256 _bfd_error_handler
695344c0 2257 /* xgettext:c-format */
d42c267e 2258 (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"),
d003868e
AM		 2259 input_bfd,
2260 input_section,
d42c267e 2261 rel->r_offset,
69fc87f1 2262 howto->name);
77df2968 2263 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2264}
2265
a85d7ed0
NC		 2266/* Relocate a 390 ELF section. */
2267
b34976b6 2268static bfd_boolean
4dfe6ac6
NC		 2269elf_s390_relocate_section (bfd *output_bfd,
2270 struct bfd_link_info *info,
2271 bfd *input_bfd,
2272 asection *input_section,
2273 bfd_byte *contents,
2274 Elf_Internal_Rela *relocs,
2275 Elf_Internal_Sym *local_syms,
2276 asection **local_sections)
a85d7ed0 2277{
0451c93c 2278 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2279 Elf_Internal_Shdr *symtab_hdr;
2280 struct elf_link_hash_entry **sym_hashes;
2281 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2282 Elf_Internal_Rela *rel;
2283 Elf_Internal_Rela *relend;
2284
0ffa91dd
NC		 2285 BFD_ASSERT (is_s390_elf (input_bfd));
2286
0451c93c 2287 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2288 if (htab == NULL)
2289 return FALSE;
2290
0ffa91dd 2291 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2292 sym_hashes = elf_sym_hashes (input_bfd);
2293 local_got_offsets = elf_local_got_offsets (input_bfd);
2294
a85d7ed0
NC		 2295 rel = relocs;
2296 relend = relocs + input_section->reloc_count;
2297 for (; rel < relend; rel++)
2298 {
5236c819 2299 unsigned int r_type;
a85d7ed0
NC		 2300 reloc_howto_type *howto;
2301 unsigned long r_symndx;
2302 struct elf_link_hash_entry *h;
2303 Elf_Internal_Sym *sym;
2304 asection *sec;
0451c93c 2305 bfd_vma off;
a85d7ed0 2306 bfd_vma relocation;
b34976b6 2307 bfd_boolean unresolved_reloc;
a85d7ed0 2308 bfd_reloc_status_type r;
69fc87f1 2309 int tls_type;
470b557a 2310 asection *base_got = htab->elf.sgot;
b27bb18f 2311 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2312
2313 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2314 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2315 || r_type == (int) R_390_GNU_VTENTRY)
2316 continue;
5236c819 2317 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2318 {
2319 bfd_set_error (bfd_error_bad_value);
b34976b6 2320 return FALSE;
a85d7ed0 2321 }
a85d7ed0 2322
b491616a 2323 howto = elf_howto_table + r_type;
a85d7ed0 2324 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2325
a85d7ed0
NC		 2326 h = NULL;
2327 sym = NULL;
2328 sec = NULL;
b34976b6 2329 unresolved_reloc = FALSE;
a85d7ed0
NC		 2330 if (r_symndx < symtab_hdr->sh_info)
2331 {
2332 sym = local_syms + r_symndx;
2333 sec = local_sections[r_symndx];
470b557a
AK		 2334
2335 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2336 {
2337 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2338 if (local_plt == NULL)
2339 return FALSE;
2340
2341 /* Address of the PLT slot. */
2342 relocation = (htab->elf.iplt->output_section->vma
2343 + htab->elf.iplt->output_offset
2344 + local_plt[r_symndx].plt.offset);
2345
2346 switch (r_type)
2347 {
31db78f6
AK		 2348 case R_390_PLTOFF16:
2349 case R_390_PLTOFF32:
2350 case R_390_PLTOFF64:
2351 relocation -= htab->elf.sgot->output_section->vma;
2352 break;
470b557a
AK		 2353 case R_390_GOTPLT12:
2354 case R_390_GOTPLT16:
2355 case R_390_GOTPLT20:
2356 case R_390_GOTPLT32:
2357 case R_390_GOTPLT64:
2358 case R_390_GOTPLTENT:
2359 case R_390_GOT12:
2360 case R_390_GOT16:
2361 case R_390_GOT20:
2362 case R_390_GOT32:
2363 case R_390_GOT64:
2364 case R_390_GOTENT:
2365 {
2366 /* Write the PLT slot address into the GOT slot. */
2367 bfd_put_64 (output_bfd, relocation,
2368 htab->elf.sgot->contents +
2369 local_got_offsets[r_symndx]);
2370 relocation = (local_got_offsets[r_symndx] +
2371 htab->elf.sgot->output_offset);
2372
2373 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2374 relocation += htab->elf.sgot->output_section->vma;
2375 break;
2376 }
2377 default:
2378 break;
2379 }
2380 /* The output section is needed later in
2381 finish_dynamic_section when creating the dynamic
2382 relocation. */
2383 local_plt[r_symndx].sec = sec;
2384 goto do_relocation;
2385 }
2386 else
2387 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2388 }
2389 else
2390 {
560e09e9 2391 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2392 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2393
b2a8e766
AM		 2394 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2395 r_symndx, symtab_hdr, sym_hashes,
2396 h, sec, relocation,
62d887d4 2397 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2398 }
2399
dbaa2011 2400 if (sec != NULL && discarded_section (sec))
e4067dbb 2401 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2402 rel, 1, relend, howto, 0, contents);
ab96bf03 2403
0e1862bb 2404 if (bfd_link_relocatable (info))
ab96bf03
AM		 2405 continue;
2406
b27bb18f
L		 2407 resolved_to_zero = (h != NULL
2408 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2409
a85d7ed0
NC		 2410 switch (r_type)
2411 {
5236c819
MS		 2412 case R_390_GOTPLT12:
2413 case R_390_GOTPLT16:
bd1ea41b 2414 case R_390_GOTPLT20:
5236c819
MS		 2415 case R_390_GOTPLT32:
2416 case R_390_GOTPLT64:
2417 case R_390_GOTPLTENT:
2418 /* There are three cases for a GOTPLT relocation. 1) The
2419 relocation is against the jump slot entry of a plt that
2420 will get emitted to the output file. 2) The relocation
2421 is against the jump slot of a plt entry that has been
2422 removed. elf_s390_adjust_gotplt has created a GOT entry
2423 as replacement. 3) The relocation is against a local symbol.
2424 Cases 2) and 3) are the same as the GOT relocation code
2425 so we just have to test for case 1 and fall through for
2426 the other two. */
2427 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2428 {
2429 bfd_vma plt_index;
2430
470b557a
AK		 2431 if (s390_is_ifunc_symbol_p (h))
2432 {
2433 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2434 relocation = (plt_index * GOT_ENTRY_SIZE +
2435 htab->elf.igotplt->output_offset);
2436 if (r_type == R_390_GOTPLTENT)
2437 relocation += htab->elf.igotplt->output_section->vma;
2438 }
2439 else
2440 {
2441 /* Calc. index no.
2442 Current offset - size first entry / entry size. */
2443 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2444 PLT_ENTRY_SIZE;
2445
2446 /* Offset in GOT is PLT index plus GOT headers(3)
3b67f094 2447 times 8, addr & GOT addr. */
470b557a
AK		 2448 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2449 if (r_type == R_390_GOTPLTENT)
2450 relocation += htab->elf.sgot->output_section->vma;
2451 }
5236c819 2452 unresolved_reloc = FALSE;
5236c819
MS		 2453 break;
2454 }
2455 /* Fall through. */
2456
947216bf
AM		 2457 case R_390_GOT12:
2458 case R_390_GOT16:
bd1ea41b 2459 case R_390_GOT20:
947216bf
AM		 2460 case R_390_GOT32:
2461 case R_390_GOT64:
2462 case R_390_GOTENT:
2463 /* Relocation is to the entry for this symbol in the global
2464 offset table. */
470b557a 2465 if (base_got == NULL)
0451c93c 2466 abort ();
a85d7ed0 2467
947216bf
AM		 2468 if (h != NULL)
2469 {
b34976b6 2470 bfd_boolean dyn;
a85d7ed0 2471
947216bf 2472 off = h->got.offset;
0451c93c 2473 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2474
2475 if (s390_is_ifunc_symbol_p (h))
2476 {
2477 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2478 if (off == (bfd_vma)-1)
2479 {
2480 /* No explicit GOT usage so redirect to the
2481 got.iplt slot. */
2482 base_got = htab->elf.igotplt;
2483 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2484 }
2485 else
2486 {
2487 /* Explicit GOT slots must contain the address
2488 of the PLT slot. This will be handled in
2489 finish_dynamic_symbol. */
2490 }
2491 }
0e1862bb
L		 2492 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2493 bfd_link_pic (info),
2494 h)
2495 || (bfd_link_pic (info)
470b557a
AK		 2496 && SYMBOL_REFERENCES_LOCAL (info, h))
2497 || (ELF_ST_VISIBILITY (h->other)
2498 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2499 {
2500 /* This is actually a static link, or it is a
2501 -Bsymbolic link and the symbol is defined
2502 locally, or the symbol was forced to be local
2503 because of a version file. We must initialize
2504 this entry in the global offset table. Since the
2505 offset must always be a multiple of 2, we use the
2506 least significant bit to record whether we have
2507 initialized it already.
2508
2509 When doing a dynamic link, we create a .rel.got
2510 relocation entry to initialize the value. This
2511 is done in the finish_dynamic_symbol routine. */
2512 if ((off & 1) != 0)
2513 off &= ~1;
2514 else
2515 {
a85d7ed0 2516 bfd_put_64 (output_bfd, relocation,
470b557a 2517 base_got->contents + off);
947216bf
AM		 2518 h->got.offset |= 1;
2519 }
a63cc5f7
AK		 2520
2521 if ((h->def_regular
0e1862bb 2522 && bfd_link_pic (info)
a63cc5f7
AK		 2523 && SYMBOL_REFERENCES_LOCAL (info, h))
2524 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2525 && ((r_type == R_390_GOTENT
2526 && (bfd_get_16 (input_bfd,
2527 contents + rel->r_offset - 2)
2528 & 0xff0f) == 0xc408)
2529 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2530 || (r_type == R_390_GOT20
2531 && (bfd_get_32 (input_bfd,
2532 contents + rel->r_offset - 2)
2533 & 0xff00f000) == 0xe300c000
2534 && bfd_get_8 (input_bfd,
2535 contents + rel->r_offset + 3) == 0x04)))
2536
2537 {
2538 unsigned short new_insn =
2539 (0xc000 | (bfd_get_8 (input_bfd,
2540 contents + rel->r_offset - 1) & 0xf0));
2541 bfd_put_16 (output_bfd, new_insn,
2542 contents + rel->r_offset - 2);
2543 r_type = R_390_PC32DBL;
2544 rel->r_addend = 2;
2545 howto = elf_howto_table + r_type;
2546 relocation = h->root.u.def.value
2547 + h->root.u.def.section->output_section->vma
2548 + h->root.u.def.section->output_offset;
2549 goto do_relocation;
2550 }
947216bf 2551 }
0451c93c 2552 else
b34976b6 2553 unresolved_reloc = FALSE;
947216bf
AM		 2554 }
2555 else
2556 {
0451c93c
MS		 2557 if (local_got_offsets == NULL)
2558 abort ();
a85d7ed0 2559
947216bf 2560 off = local_got_offsets[r_symndx];
a85d7ed0 2561
947216bf
AM		 2562 /* The offset must always be a multiple of 8. We use
2563 the least significant bit to record whether we have
2564 already generated the necessary reloc. */
2565 if ((off & 1) != 0)
2566 off &= ~1;
2567 else
2568 {
2569 bfd_put_64 (output_bfd, relocation,
f41345a7 2570 htab->elf.sgot->contents + off);
a85d7ed0 2571
0e1862bb 2572 if (bfd_link_pic (info))
947216bf
AM		 2573 {
2574 asection *s;
2575 Elf_Internal_Rela outrel;
2576 bfd_byte *loc;
a85d7ed0 2577
f41345a7 2578 s = htab->elf.srelgot;
947216bf 2579 if (s == NULL)
0451c93c 2580 abort ();
a85d7ed0 2581
f41345a7
AK		 2582 outrel.r_offset = (htab->elf.sgot->output_section->vma
2583 + htab->elf.sgot->output_offset
947216bf
AM		 2584 + off);
2585 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2586 outrel.r_addend = relocation;
947216bf
AM		 2587 loc = s->contents;
2588 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2589 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2590 }
a85d7ed0 2591
947216bf
AM		 2592 local_got_offsets[r_symndx] |= 1;
2593 }
2594 }
a85d7ed0 2595
0451c93c
MS		 2596 if (off >= (bfd_vma) -2)
2597 abort ();
2598
470b557a 2599 relocation = base_got->output_offset + off;
0451c93c 2600
ae9a127f
NC		 2601 /* For @GOTENT the relocation is against the offset between
2602 the instruction and the symbols entry in the GOT and not
2603 between the start of the GOT and the symbols entry. We
2604 add the vma of the GOT to get the correct value. */
5236c819
MS		 2605 if ( r_type == R_390_GOTENT
2606 || r_type == R_390_GOTPLTENT)
470b557a 2607 relocation += base_got->output_section->vma;
a85d7ed0 2608
947216bf 2609 break;
99c79b2e 2610
5236c819
MS		 2611 case R_390_GOTOFF16:
2612 case R_390_GOTOFF32:
2613 case R_390_GOTOFF64:
947216bf
AM		 2614 /* Relocation is relative to the start of the global offset
2615 table. */
a85d7ed0 2616
d47b13e0
AK		 2617 if (h != NULL
2618 && s390_is_ifunc_symbol_p (h)
2619 && h->def_regular
2620 && !bfd_link_executable (info))
2621 {
2622 relocation = (htab->elf.iplt->output_section->vma
2623 + htab->elf.iplt->output_offset
2624 + h->plt.offset
2625 - htab->elf.sgot->output_section->vma);
2626 goto do_relocation;
2627 }
2628
947216bf
AM		 2629 /* Note that sgot->output_offset is not involved in this
2630 calculation. We always want the start of .got. If we
2631 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2632 permitted by the ABI, we might have to change this
2633 calculation. */
f41345a7 2634 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2635 break;
a85d7ed0 2636
947216bf 2637 case R_390_GOTPC:
a85d7ed0 2638 case R_390_GOTPCDBL:
947216bf 2639 /* Use global offset table as symbol value. */
f41345a7 2640 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2641 unresolved_reloc = FALSE;
947216bf 2642 break;
a85d7ed0 2643
fb798c50 2644 case R_390_PLT12DBL:
947216bf 2645 case R_390_PLT16DBL:
fb798c50 2646 case R_390_PLT24DBL:
947216bf
AM		 2647 case R_390_PLT32:
2648 case R_390_PLT32DBL:
2649 case R_390_PLT64:
2650 /* Relocation is to the entry for this symbol in the
2651 procedure linkage table. */
a85d7ed0 2652
947216bf
AM		 2653 /* Resolve a PLT32 reloc against a local symbol directly,
2654 without using the procedure linkage table. */
2655 if (h == NULL)
2656 break;
a85d7ed0 2657
947216bf 2658 if (h->plt.offset == (bfd_vma) -1
31db78f6 2659 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2660 {
2661 /* We didn't make a PLT entry for this symbol. This
2662 happens when statically linking PIC code, or when
2663 using -Bsymbolic. */
2664 break;
2665 }
470b557a
AK		 2666 if (s390_is_ifunc_symbol_p (h))
2667 relocation = (htab->elf.iplt->output_section->vma
2668 + htab->elf.iplt->output_offset
2669 + h->plt.offset);
2670 else
2671 relocation = (htab->elf.splt->output_section->vma
2672 + htab->elf.splt->output_offset
2673 + h->plt.offset);
b34976b6 2674 unresolved_reloc = FALSE;
26e41594 2675 break;
5236c819
MS		 2676
2677 case R_390_PLTOFF16:
2678 case R_390_PLTOFF32:
2679 case R_390_PLTOFF64:
26e41594
AM		 2680 /* Relocation is to the entry for this symbol in the
2681 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2682
2683 /* For local symbols or if we didn't make a PLT entry for
2684 this symbol resolve the symbol directly. */
31db78f6 2685 if (h == NULL
5236c819 2686 || h->plt.offset == (bfd_vma) -1
31db78f6 2687 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2688 {
f41345a7 2689 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2690 break;
2691 }
2692
470b557a
AK		 2693 if (s390_is_ifunc_symbol_p (h))
2694 relocation = (htab->elf.iplt->output_section->vma
2695 + htab->elf.iplt->output_offset
2696 + h->plt.offset
2697 - htab->elf.sgot->output_section->vma);
2698 else
2699 relocation = (htab->elf.splt->output_section->vma
2700 + htab->elf.splt->output_offset
2701 + h->plt.offset
2702 - htab->elf.sgot->output_section->vma);
5236c819 2703 unresolved_reloc = FALSE;
947216bf
AM		 2704 break;
2705
947216bf 2706 case R_390_PC16:
fb798c50 2707 case R_390_PC12DBL:
947216bf 2708 case R_390_PC16DBL:
fb798c50 2709 case R_390_PC24DBL:
947216bf 2710 case R_390_PC32:
a85d7ed0 2711 case R_390_PC32DBL:
947216bf 2712 case R_390_PC64:
431e5de3
AK		 2713 if (h != NULL
2714 && bfd_link_pie (info)
2715 && !h->def_regular)
2716 {
2717 _bfd_error_handler (_("%B: `%s' non-PLT reloc for symbol defined "
2718 "in shared library and accessed "
2719 "from executable "
2720 "(rebuild file with -fPIC ?)"),
2721 input_bfd, h->root.root.string);
2722 bfd_set_error (bfd_error_bad_value);
2723 return FALSE;
2724 }
99ba5125
AK		 2725 /* The target of these relocs are instruction operands
2726 residing in read-only sections. We cannot emit a runtime
2727 reloc for it. */
2728 if (h != NULL
2729 && s390_is_ifunc_symbol_p (h)
2730 && h->def_regular
2731 && bfd_link_pic (info))
2732 {
2733 relocation = (htab->elf.iplt->output_section->vma
2734 + htab->elf.iplt->output_offset
2735 + h->plt.offset);
2736 goto do_relocation;
2737 }
1a0670f3 2738 /* Fall through. */
99ba5125
AK		 2739
2740 case R_390_8:
2741 case R_390_16:
2742 case R_390_32:
2743 case R_390_64:
470b557a
AK		 2744
2745 if (h != NULL
2746 && s390_is_ifunc_symbol_p (h)
2747 && h->def_regular)
2748 {
d7ab4911 2749 if (!bfd_link_pic (info))
470b557a 2750 {
d7ab4911
AK		 2751 /* For a non-shared object the symbol will not
2752 change. Hence we can write the address of the
2753 target IPLT slot now. */
470b557a
AK		 2754 relocation = (htab->elf.iplt->output_section->vma
2755 + htab->elf.iplt->output_offset
2756 + h ->plt.offset);
2757 goto do_relocation;
2758 }
2759 else
2760 {
2761 /* For shared objects a runtime relocation is needed. */
2762
2763 Elf_Internal_Rela outrel;
2764 asection *sreloc;
2765
2766 /* Need a dynamic relocation to get the real function
2767 address. */
2768 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2769 info,
2770 input_section,
2771 rel->r_offset);
2772 if (outrel.r_offset == (bfd_vma) -1
2773 || outrel.r_offset == (bfd_vma) -2)
2774 abort ();
2775
2776 outrel.r_offset += (input_section->output_section->vma
2777 + input_section->output_offset);
2778
2779 if (h->dynindx == -1
2780 || h->forced_local
0e1862bb 2781 || bfd_link_executable (info))
470b557a
AK		 2782 {
2783 /* This symbol is resolved locally. */
2784 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2785 outrel.r_addend = (h->root.u.def.value
2786 + h->root.u.def.section->output_section->vma
2787 + h->root.u.def.section->output_offset);
2788 }
2789 else
2790 {
2791 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2792 outrel.r_addend = 0;
2793 }
2794
2795 sreloc = htab->elf.irelifunc;
2796 elf_append_rela (output_bfd, sreloc, &outrel);
2797
2798 /* If this reloc is against an external symbol, we
2799 do not want to fiddle with the addend. Otherwise,
2800 we need to include the symbol value so that it
2801 becomes an addend for the dynamic reloc. For an
2802 internal symbol, we have updated addend. */
2803 continue;
2804 }
2805 }
2806
b1e24c02 2807 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2808 break;
2809
0e1862bb 2810 if ((bfd_link_pic (info)
82058a73 2811 && (h == NULL
b27bb18f
L		 2812 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2813 && !resolved_to_zero)
82058a73 2814 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2815 && ((r_type != R_390_PC16
fb798c50 2816 && r_type != R_390_PC12DBL
0451c93c 2817 && r_type != R_390_PC16DBL
fb798c50 2818 && r_type != R_390_PC24DBL
0451c93c
MS		 2819 && r_type != R_390_PC32
2820 && r_type != R_390_PC32DBL
2821 && r_type != R_390_PC64)
8c21ca21 2822 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2823 || (ELIMINATE_COPY_RELOCS
0e1862bb 2824 && !bfd_link_pic (info)
0451c93c
MS		 2825 && h != NULL
2826 && h->dynindx != -1
f5385ebf
AM		 2827 && !h->non_got_ref
2828 && ((h->def_dynamic
2829 && !h->def_regular)
0451c93c
MS		 2830 || h->root.type == bfd_link_hash_undefweak
2831 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2832 {
2833 Elf_Internal_Rela outrel;
b34976b6 2834 bfd_boolean skip, relocate;
0451c93c 2835 asection *sreloc;
947216bf 2836 bfd_byte *loc;
a85d7ed0 2837
947216bf
AM		 2838 /* When generating a shared object, these relocations
2839 are copied into the output file to be resolved at run
2840 time. */
b34976b6
AM		 2841 skip = FALSE;
2842 relocate = FALSE;
a85d7ed0 2843
c629eae0
JJ		 2844 outrel.r_offset =
2845 _bfd_elf_section_offset (output_bfd, info, input_section,
2846 rel->r_offset);
2847 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2848 skip = TRUE;
0bb2d96a 2849 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2850 skip = TRUE, relocate = TRUE;
a85d7ed0 2851
947216bf
AM		 2852 outrel.r_offset += (input_section->output_section->vma
2853 + input_section->output_offset);
a85d7ed0 2854
947216bf 2855 if (skip)
0bb2d96a 2856 memset (&outrel, 0, sizeof outrel);
947216bf 2857 else if (h != NULL
0451c93c
MS		 2858 && h->dynindx != -1
2859 && (r_type == R_390_PC16
fb798c50 2860 || r_type == R_390_PC12DBL
0451c93c 2861 || r_type == R_390_PC16DBL
fb798c50 2862 || r_type == R_390_PC24DBL
0451c93c
MS		 2863 || r_type == R_390_PC32
2864 || r_type == R_390_PC32DBL
2865 || r_type == R_390_PC64
0e1862bb 2866 || !bfd_link_pic (info)
8c21ca21 2867 || !SYMBOLIC_BIND (info, h)
f5385ebf 2868 || !h->def_regular))
947216bf
AM		 2869 {
2870 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2871 outrel.r_addend = rel->r_addend;
947216bf
AM		 2872 }
2873 else
2874 {
0451c93c 2875 /* This symbol is local, or marked to become local. */
90ced0dd 2876 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2877 if (r_type == R_390_64)
2878 {
2879 relocate = TRUE;
2880 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2881 }
2882 else
2883 {
2884 long sindx;
2885
90ced0dd 2886 if (bfd_is_abs_section (sec))
b5727d75
MS		 2887 sindx = 0;
2888 else if (sec == NULL || sec->owner == NULL)
2889 {
2890 bfd_set_error(bfd_error_bad_value);
2891 return FALSE;
2892 }
2893 else
2894 {
2895 asection *osec;
2896
2897 osec = sec->output_section;
2898 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2899
2900 if (sindx == 0)
2901 {
2902 osec = htab->elf.text_index_section;
2903 sindx = elf_section_data (osec)->dynindx;
2904 }
2905 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2906
2907 /* We are turning this relocation into one
2908 against a section symbol, so subtract out
2909 the output section's address but not the
2910 offset of the input section in the output
2911 section. */
90ced0dd 2912 outrel.r_addend -= osec->vma;
b5727d75
MS		 2913 }
2914 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2915 }
0451c93c 2916 }
a85d7ed0 2917
0451c93c
MS		 2918 sreloc = elf_section_data (input_section)->sreloc;
2919 if (sreloc == NULL)
2920 abort ();
2921
947216bf
AM		 2922 loc = sreloc->contents;
2923 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2924 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2925
947216bf
AM		 2926 /* If this reloc is against an external symbol, we do
2927 not want to fiddle with the addend. Otherwise, we
2928 need to include the symbol value so that it becomes
2929 an addend for the dynamic reloc. */
2930 if (! relocate)
2931 continue;
2932 }
a85d7ed0 2933
947216bf 2934 break;
a85d7ed0 2935
69fc87f1
MS		 2936 /* Relocations for tls literal pool entries. */
2937 case R_390_TLS_IE64:
0e1862bb 2938 if (bfd_link_pic (info))
69fc87f1
MS		 2939 {
2940 Elf_Internal_Rela outrel;
2941 asection *sreloc;
2942 bfd_byte *loc;
2943
2944 outrel.r_offset = rel->r_offset
2945 + input_section->output_section->vma
2946 + input_section->output_offset;
2947 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2948 sreloc = elf_section_data (input_section)->sreloc;
2949 if (sreloc == NULL)
2950 abort ();
2951 loc = sreloc->contents;
2952 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2953 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2954 }
ae9a127f 2955 /* Fall through. */
69fc87f1
MS		 2956
2957 case R_390_TLS_GD64:
2958 case R_390_TLS_GOTIE64:
2959 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2960 tls_type = GOT_UNKNOWN;
2961 if (h == NULL && local_got_offsets)
2962 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2963 else if (h != NULL)
2964 {
2965 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2966 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2967 r_type = R_390_TLS_LE64;
2968 }
2969 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2970 r_type = R_390_TLS_IE64;
2971
2972 if (r_type == R_390_TLS_LE64)
2973 {
2974 /* This relocation gets optimized away by the local exec
2975 access optimization. */
2976 BFD_ASSERT (! unresolved_reloc);
2977 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2978 contents + rel->r_offset);
2979 continue;
2980 }
2981
f41345a7 2982 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2983 abort ();
2984
2985 if (h != NULL)
2986 off = h->got.offset;
2987 else
2988 {
2989 if (local_got_offsets == NULL)
2990 abort ();
2991
2992 off = local_got_offsets[r_symndx];
2993 }
2994
2995 emit_tls_relocs:
2996
2997 if ((off & 1) != 0)
2998 off &= ~1;
26e41594 2999 else
69fc87f1
MS		 3000 {
3001 Elf_Internal_Rela outrel;
3002 bfd_byte *loc;
3003 int dr_type, indx;
3004
f41345a7 3005 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3006 abort ();
3007
f41345a7
AK		 3008 outrel.r_offset = (htab->elf.sgot->output_section->vma
3009 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3010
3011 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3012 if (r_type == R_390_TLS_GD64)
3013 dr_type = R_390_TLS_DTPMOD;
3014 else
3015 dr_type = R_390_TLS_TPOFF;
3016 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3017 outrel.r_addend = relocation - dtpoff_base (info);
3018 else
3019 outrel.r_addend = 0;
3020 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 3021 loc = htab->elf.srelgot->contents;
3022 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3023 * sizeof (Elf64_External_Rela);
3024 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3025
3026 if (r_type == R_390_TLS_GD64)
3027 {
3028 if (indx == 0)
3029 {
3030 BFD_ASSERT (! unresolved_reloc);
3031 bfd_put_64 (output_bfd,
3032 relocation - dtpoff_base (info),
f41345a7 3033 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3034 }
3035 else
3036 {
3037 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
3038 outrel.r_offset += GOT_ENTRY_SIZE;
3039 outrel.r_addend = 0;
f41345a7 3040 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3041 loc += sizeof (Elf64_External_Rela);
3042 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3043 }
3044 }
3045
3046 if (h != NULL)
3047 h->got.offset |= 1;
3048 else
3049 local_got_offsets[r_symndx] |= 1;
3050 }
3051
3052 if (off >= (bfd_vma) -2)
3053 abort ();
3054 if (r_type == ELF64_R_TYPE (rel->r_info))
3055 {
f41345a7 3056 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3057 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 3058 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3059 unresolved_reloc = FALSE;
3060 }
3061 else
3062 {
f41345a7 3063 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3064 contents + rel->r_offset);
3065 continue;
3066 }
3067 break;
3068
3069 case R_390_TLS_GOTIE12:
bd1ea41b 3070 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3071 case R_390_TLS_IEENT:
3072 if (h == NULL)
3073 {
3074 if (local_got_offsets == NULL)
3075 abort();
3076 off = local_got_offsets[r_symndx];
0e1862bb 3077 if (bfd_link_pic (info))
69fc87f1
MS		 3078 goto emit_tls_relocs;
3079 }
3080 else
3081 {
3082 off = h->got.offset;
3083 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 3084 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3085 goto emit_tls_relocs;
3086 }
3087
f41345a7 3088 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3089 abort ();
3090
3091 BFD_ASSERT (! unresolved_reloc);
3092 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3093 htab->elf.sgot->contents + off);
3094 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3095 if (r_type == R_390_TLS_IEENT)
f41345a7 3096 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3097 unresolved_reloc = FALSE;
3098 break;
3099
3100 case R_390_TLS_LDM64:
0e1862bb 3101 if (! bfd_link_pic (info))
69fc87f1
MS		 3102 /* The literal pool entry this relocation refers to gets ignored
3103 by the optimized code of the local exec model. Do nothing
3104 and the value will turn out zero. */
3105 continue;
3106
f41345a7 3107 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3108 abort ();
3109
3110 off = htab->tls_ldm_got.offset;
3111 if (off & 1)
3112 off &= ~1;
3113 else
3114 {
3115 Elf_Internal_Rela outrel;
3116 bfd_byte *loc;
3117
f41345a7 3118 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3119 abort ();
3120
f41345a7
AK		 3121 outrel.r_offset = (htab->elf.sgot->output_section->vma
3122 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3123
3124 bfd_put_64 (output_bfd, 0,
f41345a7 3125 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3126 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3127 outrel.r_addend = 0;
f41345a7
AK		 3128 loc = htab->elf.srelgot->contents;
3129 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3130 * sizeof (Elf64_External_Rela);
3131 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3132 htab->tls_ldm_got.offset |= 1;
3133 }
f41345a7 3134 relocation = htab->elf.sgot->output_offset + off;
26e41594 3135 unresolved_reloc = FALSE;
69fc87f1
MS		 3136 break;
3137
3138 case R_390_TLS_LE64:
3cbc1e5e 3139 if (bfd_link_dll (info))
69fc87f1
MS		 3140 {
3141 /* Linking a shared library with non-fpic code requires
3142 a R_390_TLS_TPOFF relocation. */
3143 Elf_Internal_Rela outrel;
3144 asection *sreloc;
3145 bfd_byte *loc;
3146 int indx;
3147
3148 outrel.r_offset = rel->r_offset
3149 + input_section->output_section->vma
3150 + input_section->output_offset;
3151 if (h != NULL && h->dynindx != -1)
3152 indx = h->dynindx;
3153 else
3154 indx = 0;
3155 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3156 if (indx == 0)
3157 outrel.r_addend = relocation - dtpoff_base (info);
3158 else
3159 outrel.r_addend = 0;
3160 sreloc = elf_section_data (input_section)->sreloc;
3161 if (sreloc == NULL)
3162 abort ();
3163 loc = sreloc->contents;
3164 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3165 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3166 }
3167 else
3168 {
3169 BFD_ASSERT (! unresolved_reloc);
3170 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3171 contents + rel->r_offset);
3172 }
3173 continue;
3174
3175 case R_390_TLS_LDO64:
0e1862bb 3176 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3177 relocation -= dtpoff_base (info);
3178 else
3179 /* When converting LDO to LE, we must negate. */
3180 relocation = -tpoff (info, relocation);
3181 break;
3182
3183 /* Relocations for tls instructions. */
3184 case R_390_TLS_LOAD:
3185 case R_390_TLS_GDCALL:
3186 case R_390_TLS_LDCALL:
3187 tls_type = GOT_UNKNOWN;
3188 if (h == NULL && local_got_offsets)
3189 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3190 else if (h != NULL)
3191 tls_type = elf_s390_hash_entry(h)->tls_type;
3192
3193 if (tls_type == GOT_TLS_GD)
3194 continue;
3195
3196 if (r_type == R_390_TLS_LOAD)
3197 {
0e1862bb 3198 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3199 {
3200 /* IE->LE transition. Four valid cases:
3201 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3202 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3203 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3204 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3205 unsigned int insn0, insn1, ry;
3206
3207 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3208 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3209 if (insn1 != 0x0004)
3704e358
AK		 3210 {
3211 invalid_tls_insn (input_bfd, input_section, rel);
3212 return FALSE;
3213 }
69fc87f1
MS		 3214 if ((insn0 & 0xff00f000) == 0xe3000000)
3215 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3216 ry = (insn0 & 0x000f0000);
3217 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3218 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3219 ry = (insn0 & 0x0000f000) << 4;
3220 else if ((insn0 & 0xff00f000) == 0xe300c000)
3221 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3222 ry = (insn0 & 0x000f0000);
3223 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3224 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3225 ry = (insn0 & 0x0000f000) << 4;
3226 else
3704e358
AK		 3227 {
3228 invalid_tls_insn (input_bfd, input_section, rel);
3229 return FALSE;
3230 }
69fc87f1
MS		 3231 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3232 insn1 = 0x000d;
3233 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3234 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3235 }
3236 }
3237 else if (r_type == R_390_TLS_GDCALL)
3238 {
3239 unsigned int insn0, insn1;
3240
3241 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3242 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3243 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3244 {
3245 invalid_tls_insn (input_bfd, input_section, rel);
3246 return FALSE;
3247 }
0e1862bb 3248 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3249 {
3250 /* GD->LE transition.
3251 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3252 insn0 = 0xc0040000;
3253 insn1 = 0x0000;
3254 }
3255 else
3256 {
3257 /* GD->IE transition.
3258 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3259 insn0 = 0xe322c000;
3260 insn1 = 0x0004;
3261 }
3262 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3263 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3264 }
3265 else if (r_type == R_390_TLS_LDCALL)
3266 {
0e1862bb 3267 if (!bfd_link_pic (info))
69fc87f1
MS		 3268 {
3269 unsigned int insn0, insn1;
3270
3271 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3272 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3273 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3274 {
3275 invalid_tls_insn (input_bfd, input_section, rel);
3276 return FALSE;
3277 }
69fc87f1
MS		 3278 /* LD->LE transition.
3279 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3280 insn0 = 0xc0040000;
3281 insn1 = 0x0000;
3282 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3283 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3284 }
3285 }
3286 continue;
3287
947216bf
AM		 3288 default:
3289 break;
3290 }
a85d7ed0 3291
239e1f3a
AM		 3292 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3293 because such sections are not SEC_ALLOC and thus ld.so will
3294 not process them. */
0451c93c 3295 if (unresolved_reloc
239e1f3a 3296 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3297 && h->def_dynamic)
3298 && _bfd_elf_section_offset (output_bfd, info, input_section,
3299 rel->r_offset) != (bfd_vma) -1)
4eca0228 3300 _bfd_error_handler
695344c0 3301 /* xgettext:c-format */
d42c267e 3302 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3303 input_bfd,
3304 input_section,
d42c267e 3305 rel->r_offset,
843fe662 3306 howto->name,
0451c93c
MS		 3307 h->root.root.string);
3308
470b557a
AK		 3309 do_relocation:
3310
fb798c50
AK		 3311 /* When applying a 24 bit reloc we need to start one byte
3312 earlier. Otherwise the 32 bit get/put bfd operations might
3313 access a byte after the actual section. */
3314 if (r_type == R_390_PC24DBL
3315 || r_type == R_390_PLT24DBL)
3316 rel->r_offset--;
3317
bd1ea41b
MS		 3318 if (r_type == R_390_20
3319 || r_type == R_390_GOT20
3320 || r_type == R_390_GOTPLT20
3321 || r_type == R_390_TLS_GOTIE20)
3322 {
3323 relocation += rel->r_addend;
3324 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3325 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3326 contents, rel->r_offset,
3327 relocation, 0);
3328 }
3329 else
3330 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3331 contents, rel->r_offset,
3332 relocation, rel->r_addend);
3333
3334 if (r != bfd_reloc_ok)
3335 {
0451c93c 3336 const char *name;
ec338859 3337
0451c93c
MS		 3338 if (h != NULL)
3339 name = h->root.root.string;
3340 else
a85d7ed0 3341 {
0451c93c
MS		 3342 name = bfd_elf_string_from_elf_section (input_bfd,
3343 symtab_hdr->sh_link,
3344 sym->st_name);
3345 if (name == NULL)
b34976b6 3346 return FALSE;
0451c93c
MS		 3347 if (*name == '\0')
3348 name = bfd_section_name (input_bfd, sec);
3349 }
ec338859 3350
0451c93c 3351 if (r == bfd_reloc_overflow)
1a72702b
AM		 3352 (*info->callbacks->reloc_overflow)
3353 (info, (h ? &h->root : NULL), name, howto->name,
3354 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3355 else
3356 {
4eca0228 3357 _bfd_error_handler
695344c0 3358 /* xgettext:c-format */
d42c267e 3359 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3360 input_bfd, input_section,
d42c267e 3361 rel->r_offset, name, (int) r);
b34976b6 3362 return FALSE;
a85d7ed0
NC		 3363 }
3364 }
3365 }
3366
b34976b6 3367 return TRUE;
a85d7ed0
NC		 3368}
3369
470b557a
AK		 3370/* Generate the PLT slots together with the dynamic relocations needed
3371 for IFUNC symbols. */
3372
3373static void
3374elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3375 struct bfd_link_info *info,
3376 struct elf_link_hash_entry *h,
3377 struct elf_s390_link_hash_table *htab,
3378 bfd_vma plt_offset,
3379 bfd_vma resolver_address)
3380{
3381 bfd_vma plt_index;
3382 bfd_vma got_offset;
3383 Elf_Internal_Rela rela;
3384 bfd_byte *loc;
3385 asection *plt, *gotplt, *relplt;
3386
3387 if (htab->elf.iplt == NULL
3388 || htab->elf.igotplt == NULL
3389 || htab->elf.irelplt == NULL)
3390 abort ();
3391
3392 /* Index of the PLT slot within iplt section. */
3393 plt_index = plt_offset / PLT_ENTRY_SIZE;
3394 plt = htab->elf.iplt;
3395 /* Offset into the igot.plt section. */
3396 got_offset = plt_index * GOT_ENTRY_SIZE;
3397 gotplt = htab->elf.igotplt;
3398 relplt = htab->elf.irelplt;
3399
3400 /* Fill in the blueprint of a PLT. */
3401 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3402 PLT_ENTRY_SIZE);
3403
3404 /* Fixup the relative address to the GOT entry */
3405 bfd_put_32 (output_bfd,
3406 (gotplt->output_section->vma +
3407 gotplt->output_offset + got_offset
3408 - (plt->output_section->vma +
3409 plt->output_offset +
3410 plt_offset))/2,
3411 plt->contents + plt_offset + 2);
3412 /* Fixup the relative branch to PLT 0 */
3413 bfd_put_32 (output_bfd, - (plt->output_offset +
3414 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3415 plt->contents + plt_offset + 24);
3416 /* Fixup offset into .rela.plt section. */
3417 bfd_put_32 (output_bfd, relplt->output_offset +
3418 plt_index * sizeof (Elf64_External_Rela),
3419 plt->contents + plt_offset + 28);
3420
3421 /* Fill in the entry in the global offset table.
3422 Points to instruction after GOT offset. */
3423 bfd_put_64 (output_bfd,
3424 (plt->output_section->vma
3425 + plt->output_offset
3426 + plt_offset
3427 + 14),
3428 gotplt->contents + got_offset);
3429
3430 /* Fill in the entry in the .rela.plt section. */
3431 rela.r_offset = (gotplt->output_section->vma
3432 + gotplt->output_offset
3433 + got_offset);
3434
3435 if (!h
3436 || h->dynindx == -1
0e1862bb 3437 || ((bfd_link_executable (info)
470b557a
AK		 3438 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3439 && h->def_regular))
3440 {
3441 /* The symbol can be locally resolved. */
3442 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3443 rela.r_addend = resolver_address;
3444 }
3445 else
3446 {
3447 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3448 rela.r_addend = 0;
3449 }
3450
3451 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3452 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3453}
3454
3455
a85d7ed0
NC		 3456/* Finish up dynamic symbol handling. We set the contents of various
3457 dynamic sections here. */
3458
b34976b6 3459static bfd_boolean
4dfe6ac6
NC		 3460elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3461 struct bfd_link_info *info,
3462 struct elf_link_hash_entry *h,
3463 Elf_Internal_Sym *sym)
a85d7ed0 3464{
0451c93c 3465 struct elf_s390_link_hash_table *htab;
470b557a 3466 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3467
0451c93c 3468 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3469 if (htab == NULL)
3470 return FALSE;
a85d7ed0
NC		 3471
3472 if (h->plt.offset != (bfd_vma) -1)
3473 {
a85d7ed0 3474 bfd_vma plt_index;
0451c93c
MS		 3475 bfd_vma got_offset;
3476 Elf_Internal_Rela rela;
947216bf 3477 bfd_byte *loc;
a85d7ed0
NC		 3478
3479 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3480 it up. */
0a511368 3481 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3482 {
0a511368
AK		 3483 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3484 htab, h->plt.offset,
3485 eh->ifunc_resolver_address +
3486 eh->ifunc_resolver_section->output_offset +
3487 eh->ifunc_resolver_section->output_section->vma);
3488
3489 /* Do not return yet. Handling of explicit GOT slots of
3490 IFUNC symbols is below. */
470b557a
AK		 3491 }
3492 else
3493 {
3494 if (h->dynindx == -1
3495 || htab->elf.splt == NULL
3496 || htab->elf.sgotplt == NULL
3497 || htab->elf.srelplt == NULL)
3498 abort ();
a85d7ed0 3499
470b557a
AK		 3500 /* Calc. index no.
3501 Current offset - size first entry / entry size. */
3502 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3503
470b557a
AK		 3504 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3505 addr & GOT addr. */
3506 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3507
470b557a
AK		 3508 /* Fill in the blueprint of a PLT. */
3509 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3510 PLT_ENTRY_SIZE);
3511
3512 /* Fixup the relative address to the GOT entry */
3513 bfd_put_32 (output_bfd,
3514 (htab->elf.sgotplt->output_section->vma +
3515 htab->elf.sgotplt->output_offset + got_offset
3516 - (htab->elf.splt->output_section->vma +
3517 htab->elf.splt->output_offset +
3518 h->plt.offset))/2,
3519 htab->elf.splt->contents + h->plt.offset + 2);
3520 /* Fixup the relative branch to PLT 0 */
3521 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3522 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3523 htab->elf.splt->contents + h->plt.offset + 24);
3524 /* Fixup offset into .rela.plt section. */
3525 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3526 htab->elf.splt->contents + h->plt.offset + 28);
3527
3528 /* Fill in the entry in the global offset table.
3529 Points to instruction after GOT offset. */
3530 bfd_put_64 (output_bfd,
3531 (htab->elf.splt->output_section->vma
3532 + htab->elf.splt->output_offset
3533 + h->plt.offset
3534 + 14),
3535 htab->elf.sgotplt->contents + got_offset);
3536
3537 /* Fill in the entry in the .rela.plt section. */
3538 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3539 + htab->elf.sgotplt->output_offset
3540 + got_offset);
3541 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3542 rela.r_addend = 0;
3543 loc = htab->elf.srelplt->contents + plt_index *
3544 sizeof (Elf64_External_Rela);
3545 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3546
3547 if (!h->def_regular)
3548 {
3549 /* Mark the symbol as undefined, rather than as defined in
3550 the .plt section. Leave the value alone. This is a clue
3551 for the dynamic linker, to make function pointer
3552 comparisons work between an application and shared
3553 library. */
3554 sym->st_shndx = SHN_UNDEF;
3555 }
a85d7ed0
NC		 3556 }
3557 }
3558
69fc87f1
MS		 3559 if (h->got.offset != (bfd_vma) -1
3560 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3561 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3562 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3563 {
a85d7ed0 3564 Elf_Internal_Rela rela;
947216bf 3565 bfd_byte *loc;
a85d7ed0
NC		 3566
3567 /* This symbol has an entry in the global offset table. Set it
947216bf 3568 up. */
f41345a7 3569 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3570 abort ();
a85d7ed0 3571
f41345a7
AK		 3572 rela.r_offset = (htab->elf.sgot->output_section->vma
3573 + htab->elf.sgot->output_offset
dc810e39 3574 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3575
470b557a
AK		 3576 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3577 {
0e1862bb 3578 if (bfd_link_pic (info))
470b557a
AK		 3579 {
3580 /* An explicit GOT slot usage needs GLOB_DAT. If the
3581 symbol references local the implicit got.iplt slot
3582 will be used and the IRELATIVE reloc has been created
3583 above. */
3584 goto do_glob_dat;
3585 }
3586 else
3587 {
3588 /* For non-shared objects explicit GOT slots must be
3589 filled with the PLT slot address for pointer
3590 equality reasons. */
3591 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3592 + htab->elf.iplt->output_offset
3593 + h->plt.offset),
3594 htab->elf.sgot->contents + h->got.offset);
3595 return TRUE;
3596 }
3597 }
0e1862bb 3598 else if (bfd_link_pic (info)
ceada896 3599 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3600 {
470b557a
AK		 3601 /* If this is a static link, or it is a -Bsymbolic link and
3602 the symbol is defined locally or was forced to be local
3603 because of a version file, we just want to emit a
3604 RELATIVE reloc. The entry in the global offset table
3605 will already have been initialized in the
3606 relocate_section function. */
8170f769 3607 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3608 return FALSE;
0451c93c 3609 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3610 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3611 rela.r_addend = (h->root.u.def.value
3612 + h->root.u.def.section->output_section->vma
3613 + h->root.u.def.section->output_offset);
3614 }
a85d7ed0
NC		 3615 else
3616 {
3617 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3618 do_glob_dat:
f41345a7 3619 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3620 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3621 rela.r_addend = 0;
3622 }
a85d7ed0 3623
f41345a7
AK		 3624 loc = htab->elf.srelgot->contents;
3625 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3626 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3627 }
3628
f5385ebf 3629 if (h->needs_copy)
a85d7ed0 3630 {
a85d7ed0 3631 Elf_Internal_Rela rela;
5474d94f 3632 asection *s;
947216bf 3633 bfd_byte *loc;
a85d7ed0
NC		 3634
3635 /* This symbols needs a copy reloc. Set it up. */
3636
0451c93c
MS		 3637 if (h->dynindx == -1
3638 || (h->root.type != bfd_link_hash_defined
3639 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3640 || htab->elf.srelbss == NULL)
0451c93c 3641 abort ();
a85d7ed0
NC		 3642
3643 rela.r_offset = (h->root.u.def.value
3644 + h->root.u.def.section->output_section->vma
3645 + h->root.u.def.section->output_offset);
3646 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3647 rela.r_addend = 0;
afbf7e8e 3648 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3649 s = htab->elf.sreldynrelro;
3650 else
3651 s = htab->elf.srelbss;
3652 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3653 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3654 }
3655
3656 /* Mark some specially defined symbols as absolute. */
9637f6ef 3657 if (h == htab->elf.hdynamic
22edb2f1
RS		 3658 || h == htab->elf.hgot
3659 || h == htab->elf.hplt)
a85d7ed0
NC		 3660 sym->st_shndx = SHN_ABS;
3661
b34976b6 3662 return TRUE;
a85d7ed0
NC		 3663}
3664
0451c93c
MS		 3665/* Used to decide how to sort relocs in an optimal manner for the
3666 dynamic linker, before writing them out. */
3667
3668static enum elf_reloc_type_class
7e612e98
AM		 3669elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3670 const asection *rel_sec ATTRIBUTE_UNUSED,
3671 const Elf_Internal_Rela *rela)
0451c93c 3672{
0f042c67
AK		 3673 bfd *abfd = info->output_bfd;
3674 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3675 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3676 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3677 Elf_Internal_Sym sym;
3678
3679 if (htab->elf.dynsym == NULL
3680 || !bed->s->swap_symbol_in (abfd,
3681 (htab->elf.dynsym->contents
3682 + r_symndx * bed->s->sizeof_sym),
3683 0, &sym))
3684 abort ();
3685
3686 /* Check relocation against STT_GNU_IFUNC symbol. */
3687 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3688 return reloc_class_ifunc;
3689
0451c93c
MS		 3690 switch ((int) ELF64_R_TYPE (rela->r_info))
3691 {
3692 case R_390_RELATIVE:
3693 return reloc_class_relative;
3694 case R_390_JMP_SLOT:
3695 return reloc_class_plt;
3696 case R_390_COPY:
3697 return reloc_class_copy;
3698 default:
3699 return reloc_class_normal;
3700 }
3701}
3702
a85d7ed0
NC		 3703/* Finish up the dynamic sections. */
3704
b34976b6 3705static bfd_boolean
4dfe6ac6
NC		 3706elf_s390_finish_dynamic_sections (bfd *output_bfd,
3707 struct bfd_link_info *info)
a85d7ed0 3708{
0451c93c 3709 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3710 bfd *dynobj;
3711 asection *sdyn;
470b557a
AK		 3712 bfd *ibfd;
3713 unsigned int i;
a85d7ed0 3714
0451c93c 3715 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3716 if (htab == NULL)
3717 return FALSE;
3718
0451c93c 3719 dynobj = htab->elf.dynobj;
3d4d4302 3720 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3721
0451c93c 3722 if (htab->elf.dynamic_sections_created)
a85d7ed0 3723 {
a85d7ed0
NC		 3724 Elf64_External_Dyn *dyncon, *dynconend;
3725
f41345a7 3726 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3727 abort ();
a85d7ed0
NC		 3728
3729 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3730 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3731 for (; dyncon < dynconend; dyncon++)
3732 {
3733 Elf_Internal_Dyn dyn;
a85d7ed0 3734 asection *s;
ec338859 3735
a85d7ed0 3736 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3737
a85d7ed0
NC		 3738 switch (dyn.d_tag)
3739 {
3740 default:
0451c93c 3741 continue;
ec338859 3742
a85d7ed0 3743 case DT_PLTGOT:
4ade44b7
AM		 3744 s = htab->elf.sgotplt;
3745 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3746 break;
ec338859 3747
a85d7ed0 3748 case DT_JMPREL:
4ade44b7
AM		 3749 s = htab->elf.srelplt;
3750 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3751 break;
ec338859 3752
a85d7ed0 3753 case DT_PLTRELSZ:
79c12fae
AK		 3754 dyn.d_un.d_val = htab->elf.srelplt->size;
3755 if (htab->elf.irelplt)
3756 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3757 break;
ec338859 3758
a85d7ed0
NC		 3759 case DT_RELASZ:
3760 /* The procedure linkage table relocs (DT_JMPREL) should
3761 not be included in the overall relocs (DT_RELA).
3762 Therefore, we override the DT_RELASZ entry here to
3763 make it not include the JMPREL relocs. Since the
3764 linker script arranges for .rela.plt to follow all
3765 other relocation sections, we don't have to worry
3766 about changing the DT_RELA entry. */
79c12fae
AK		 3767 dyn.d_un.d_val -= htab->elf.srelplt->size;
3768 if (htab->elf.irelplt)
3769 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3770 break;
3771 }
0451c93c
MS		 3772
3773 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3774 }
3775
3776 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3777 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3778 {
3779 /* fill in blueprint for plt 0 entry */
f41345a7 3780 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3781 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3782 /* Fixup relative address to start of GOT */
3783 bfd_put_32 (output_bfd,
161db279
AK		 3784 (htab->elf.sgotplt->output_section->vma
3785 + htab->elf.sgotplt->output_offset
3786 - htab->elf.splt->output_section->vma
3787 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3788 htab->elf.splt->contents + 8);
a85d7ed0 3789 }
387f8054
MR		 3790 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3791 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3792 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3793 }
3794
f41345a7 3795 if (htab->elf.sgotplt)
a85d7ed0 3796 {
0451c93c 3797 /* Fill in the first three entries in the global offset table. */
f41345a7 3798 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3799 {
3800 bfd_put_64 (output_bfd,
3801 (sdyn == NULL ? (bfd_vma) 0
3802 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3803 htab->elf.sgotplt->contents);
0451c93c 3804 /* One entry for shared object struct ptr. */
f41345a7 3805 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3806 /* One entry for _dl_runtime_resolve. */
3b67f094 3807 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
0451c93c 3808 }
a85d7ed0 3809
f41345a7 3810 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3811 ->this_hdr.sh_entsize = 8;
3812 }
470b557a
AK		 3813
3814 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3815 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3816 {
3817 struct plt_entry *local_plt;
3818 Elf_Internal_Sym *isym;
3819 Elf_Internal_Shdr *symtab_hdr;
3820
3821 symtab_hdr = &elf_symtab_hdr (ibfd);
3822
1ef692ea
AK		 3823 if (!is_s390_elf (ibfd))
3824 continue;
3825
470b557a
AK		 3826 local_plt = elf_s390_local_plt (ibfd);
3827 if (local_plt != NULL)
3828 for (i = 0; i < symtab_hdr->sh_info; i++)
3829 {
3830 if (local_plt[i].plt.offset != (bfd_vma) -1)
3831 {
3832 asection *sec = local_plt[i].sec;
3833 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3834 if (isym == NULL)
3835 return FALSE;
3836
3837 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3838 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3839 local_plt[i].plt.offset,
3840 isym->st_value
3841 + sec->output_section->vma
3842 + sec->output_offset);
3843
3844 }
3845 }
3846 }
3847
b34976b6 3848 return TRUE;
a85d7ed0 3849}
e3e9290d
AA		 3850\f
3851/* Support for core dump NOTE sections. */
a85d7ed0 3852
e3e9290d
AA		 3853static bfd_boolean
3854elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3855{
3856 int offset;
3857 size_t size;
3858
3859 switch (note->descsz)
3860 {
3861 default:
3862 return FALSE;
3863
3864 case 336: /* sizeof(struct elf_prstatus) on s390x */
3865 /* pr_cursig */
3866 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3867
3868 /* pr_pid */
3869 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3870
3871 /* pr_reg */
3872 offset = 112;
3873 size = 216;
3874 break;
3875 }
3876
3877 /* Make a ".reg/999" section. */
3878 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3879 size, note->descpos + offset);
3880}
3881
3882static bfd_boolean
3883elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3884{
3885 switch (note->descsz)
3886 {
3887 default:
3888 return FALSE;
3889
3890 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3891 elf_tdata (abfd)->core->pid
3892 = bfd_get_32 (abfd, note->descdata + 24);
3893 elf_tdata (abfd)->core->program
3894 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3895 elf_tdata (abfd)->core->command
3896 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3897 }
3898
3899 /* Note that for some reason, a spurious space is tacked
3900 onto the end of the args in some (at least one anyway)
3901 implementations, so strip it off if it exists. */
3902
3903 {
3904 char *command = elf_tdata (abfd)->core->command;
3905 int n = strlen (command);
3906
3907 if (0 < n && command[n - 1] == ' ')
3908 command[n - 1] = '\0';
3909 }
3910
3911 return TRUE;
3912}
3913
3914static char *
3915elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3916 int note_type, ...)
3917{
3918 va_list ap;
3919
3920 switch (note_type)
3921 {
3922 default:
3923 return NULL;
3924
3925 case NT_PRPSINFO:
3926 {
3927 char data[136] = { 0 };
3928 const char *fname, *psargs;
3929
3930 va_start (ap, note_type);
3931 fname = va_arg (ap, const char *);
3932 psargs = va_arg (ap, const char *);
3933 va_end (ap);
3934
3935 strncpy (data + 40, fname, 16);
3936 strncpy (data + 56, psargs, 80);
3937 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3938 &data, sizeof (data));
3939 }
3940
3941 case NT_PRSTATUS:
3942 {
3943 char data[336] = { 0 };
3944 long pid;
3945 int cursig;
3946 const void *gregs;
3947
3948 va_start (ap, note_type);
3949 pid = va_arg (ap, long);
3950 cursig = va_arg (ap, int);
3951 gregs = va_arg (ap, const void *);
3952 va_end (ap);
3953
3954 bfd_put_16 (abfd, cursig, data + 12);
3955 bfd_put_32 (abfd, pid, data + 32);
3956 memcpy (data + 112, gregs, 216);
3957 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3958 &data, sizeof (data));
3959 }
3960 }
3961 /* NOTREACHED */
3962}
3963\f
4c45e5c9
JJ		 3964/* Return address for Ith PLT stub in section PLT, for relocation REL
3965 or (bfd_vma) -1 if it should not be included. */
3966
3967static bfd_vma
3968elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3969 const arelent *rel ATTRIBUTE_UNUSED)
3970{
3971 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3972}
3973
643f7afb
AK		 3974/* Merge backend specific data from an object file to the output
3975 object file when linking. */
3976
3977static bfd_boolean
50e03d47 3978elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3979{
50e03d47 3980 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3981 return TRUE;
3982
50e03d47 3983 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3984}
3985
b4cbbe8f
AK		 3986/* We may add a PT_S390_PGSTE program header. */
3987
3988static int
3989elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3990 struct bfd_link_info *info)
3991{
3992 struct elf_s390_link_hash_table *htab;
3993
93ec5e23
AK		 3994 if (info)
3995 {
3996 htab = elf_s390_hash_table (info);
3997 if (htab)
3998 return htab->params->pgste;
3999 }
4000 return 0;
b4cbbe8f
AK		 4001}
4002
4003
4004/* Add the PT_S390_PGSTE program header. */
4005
4006static bfd_boolean
93ec5e23 4007elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 4008{
4009 struct elf_s390_link_hash_table *htab;
4010 struct elf_segment_map *m, *pm = NULL;
4011
93ec5e23
AK		 4012 if (!abfd || !info)
4013 return TRUE;
4014
b4cbbe8f 4015 htab = elf_s390_hash_table (info);
93ec5e23 4016 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 4017 return TRUE;
4018
4019 /* If there is already a PT_S390_PGSTE header, avoid adding
4020 another. */
4021 m = elf_seg_map (abfd);
4022 while (m && m->p_type != PT_S390_PGSTE)
4023 {
4024 pm = m;
4025 m = m->next;
4026 }
4027
4028 if (m)
4029 return TRUE;
4030
4031 m = (struct elf_segment_map *)
4032 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
4033 if (m == NULL)
4034 return FALSE;
4035 m->p_type = PT_S390_PGSTE;
4036 m->count = 0;
4037 m->next = NULL;
4038 if (pm)
4039 pm->next = m;
4040
4041 return TRUE;
4042}
4043
4044bfd_boolean
4045bfd_elf_s390_set_options (struct bfd_link_info *info,
4046 struct s390_elf_params *params)
4047{
4048 struct elf_s390_link_hash_table *htab;
4049
93ec5e23
AK		 4050 if (info)
4051 {
4052 htab = elf_s390_hash_table (info);
4053 if (htab)
4054 htab->params = params;
4055 }
b4cbbe8f
AK		 4056
4057 return TRUE;
4058}
4059
4060
ae9a127f
NC		 4061/* Why was the hash table entry size definition changed from
4062 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
4063 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 4064
4065const struct elf_size_info s390_elf64_size_info =
4066{
4067 sizeof (Elf64_External_Ehdr),
4068 sizeof (Elf64_External_Phdr),
4069 sizeof (Elf64_External_Shdr),
4070 sizeof (Elf64_External_Rel),
4071 sizeof (Elf64_External_Rela),
4072 sizeof (Elf64_External_Sym),
4073 sizeof (Elf64_External_Dyn),
4074 sizeof (Elf_External_Note),
ae9a127f
NC		 4075 8, /* hash-table entry size. */
4076 1, /* internal relocations per external relocations. */
4077 64, /* arch_size. */
45d6a902 4078 3, /* log_file_align. */
a85d7ed0
NC		 4079 ELFCLASS64, EV_CURRENT,
4080 bfd_elf64_write_out_phdrs,
4081 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 4082 bfd_elf64_checksum_contents,
a85d7ed0 4083 bfd_elf64_write_relocs,
73ff0d56 4084 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 4085 bfd_elf64_swap_symbol_out,
4086 bfd_elf64_slurp_reloc_table,
4087 bfd_elf64_slurp_symbol_table,
4088 bfd_elf64_swap_dyn_in,
4089 bfd_elf64_swap_dyn_out,
947216bf
AM		 4090 bfd_elf64_swap_reloc_in,
4091 bfd_elf64_swap_reloc_out,
4092 bfd_elf64_swap_reloca_in,
4093 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 4094};
4095
6d00b590 4096#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 4097#define TARGET_BIG_NAME "elf64-s390"
4098#define ELF_ARCH bfd_arch_s390
ae95ffa6 4099#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 4100#define ELF_MACHINE_CODE EM_S390
4101#define ELF_MACHINE_ALT1 EM_S390_OLD
4102#define ELF_MAXPAGESIZE 0x1000
4103
4104#define elf_backend_size_info s390_elf64_size_info
4105
4106#define elf_backend_can_gc_sections 1
51b64d56 4107#define elf_backend_can_refcount 1
a85d7ed0
NC		 4108#define elf_backend_want_got_plt 1
4109#define elf_backend_plt_readonly 1
4110#define elf_backend_want_plt_sym 0
4111#define elf_backend_got_header_size 24
5474d94f 4112#define elf_backend_want_dynrelro 1
b491616a 4113#define elf_backend_rela_normal 1
a85d7ed0
NC		 4114
4115#define elf_info_to_howto elf_s390_info_to_howto
4116
a85d7ed0
NC		 4117#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
4118#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
4119#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
643f7afb
AK		 4120#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4121#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 4122
4123#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4124#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 4125#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4126#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
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NC		 4127#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4128#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4129#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4130#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4131#define elf_backend_reloc_type_class elf_s390_reloc_type_class
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NC		 4132#define elf_backend_relocate_section elf_s390_relocate_section
4133#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4134#define elf_backend_init_index_section _bfd_elf_init_1_index_section
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AA		 4135#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4136#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4137#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4138#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4139#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4140#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
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AK		 4141#define elf_backend_additional_program_headers elf_s390_additional_program_headers
4142#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 4143
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MS		 4144#define bfd_elf64_mkobject elf_s390_mkobject
4145#define elf_backend_object_p elf_s390_object_p
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NC		 4146
4147#include "elf64-target.h"
GDB Binutils - Deliverables
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