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a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
b3adc24a 2 Copyright (C) 2000-2020 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
07d6d2b8
AM		 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),
5236c819 67 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 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,
07d6d2b8 70 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
5236c819 71 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 72 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
5236c819 73 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 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,
5236c819 78 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 79 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 80 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 81 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
5236c819 82 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 83 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 84 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8
AM		 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,
5236c819
MS		 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,
07d6d2b8 96 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
5236c819
MS		 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),
07d6d2b8 99 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819 100 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
07d6d2b8
AM		 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),
5236c819 103 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 104 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
5236c819 105 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 106 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
5236c819 107 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 108 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
5236c819 109 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 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,
5236c819 112 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 113 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 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),
07d6d2b8 117 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 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),
07d6d2b8 125 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 126 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 127 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 128 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 129 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 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. */
07d6d2b8 138 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 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. */
07d6d2b8 149 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 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. */
07d6d2b8 154 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 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),
07d6d2b8 165 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 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),
07d6d2b8 169 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 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),
07d6d2b8
AM		 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,
fb798c50 178 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
07d6d2b8
AM		 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,
fb798c50 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 *
f3185997 192elf_s390_reloc_type_lookup (bfd *abfd,
2c3fc389 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 }
f3185997
NC		 326
327 /* xgettext:c-format */
e8f5af78 328 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
f3185997
NC		 329 bfd_set_error (bfd_error_bad_value);
330 return NULL;
a85d7ed0
NC		 331}
332
157090f7
AM		 333static reloc_howto_type *
334elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 const char *r_name)
336{
337 unsigned int i;
338
339 for (i = 0;
340 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
341 i++)
342 if (elf_howto_table[i].name != NULL
343 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
344 return &elf_howto_table[i];
345
0bc7245a
JK		 346 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
347 return &elf64_s390_vtinherit_howto;
348 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
349 return &elf64_s390_vtentry_howto;
157090f7
AM		 350
351 return NULL;
352}
353
a85d7ed0
NC		 354/* We need to use ELF64_R_TYPE so we have our own copy of this function,
355 and elf64-s390.c has its own copy. */
356
f3185997 357static bfd_boolean
2c3fc389
NC		 358elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
359 arelent *cache_ptr,
360 Elf_Internal_Rela *dst)
a85d7ed0 361{
d0fb9a8d 362 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
f3185997 363
d0fb9a8d 364 switch (r_type)
a85d7ed0
NC		 365 {
366 case R_390_GNU_VTINHERIT:
367 cache_ptr->howto = &elf64_s390_vtinherit_howto;
368 break;
369
370 case R_390_GNU_VTENTRY:
371 cache_ptr->howto = &elf64_s390_vtentry_howto;
372 break;
373
374 default:
d0fb9a8d
JJ		 375 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
376 {
695344c0 377 /* xgettext:c-format */
0aa13fee
AM		 378 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
379 abfd, r_type);
f3185997
NC		 380 bfd_set_error (bfd_error_bad_value);
381 return FALSE;
d0fb9a8d
JJ		 382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 384 }
f3185997 385 return TRUE;
a85d7ed0
NC		 386}
387
69fc87f1
MS		 388/* A relocation function which doesn't do anything. */
389static bfd_reloc_status_type
2c3fc389
NC		 390s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
391 arelent *reloc_entry,
392 asymbol *symbol ATTRIBUTE_UNUSED,
393 void * data ATTRIBUTE_UNUSED,
394 asection *input_section,
395 bfd *output_bfd,
396 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 397{
398 if (output_bfd)
399 reloc_entry->address += input_section->output_offset;
400 return bfd_reloc_ok;
401}
402
bd1ea41b
MS		 403/* Handle the large displacement relocs. */
404static bfd_reloc_status_type
2c3fc389
NC		 405s390_elf_ldisp_reloc (bfd *abfd,
406 arelent *reloc_entry,
407 asymbol *symbol,
408 void * data,
409 asection *input_section,
410 bfd *output_bfd,
411 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 412{
413 reloc_howto_type *howto = reloc_entry->howto;
414 bfd_vma relocation;
415 bfd_vma insn;
416
417 if (output_bfd != (bfd *) NULL
418 && (symbol->flags & BSF_SECTION_SYM) == 0
419 && (! howto->partial_inplace
420 || reloc_entry->addend == 0))
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425 if (output_bfd != NULL)
426 return bfd_reloc_continue;
427
07515404 428 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 429 return bfd_reloc_outofrange;
430
431 relocation = (symbol->value
432 + symbol->section->output_section->vma
433 + symbol->section->output_offset);
434 relocation += reloc_entry->addend;
435 if (howto->pc_relative)
436 {
437 relocation -= (input_section->output_section->vma
438 + input_section->output_offset);
439 relocation -= reloc_entry->address;
440 }
441
68ffbac6 442 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 443 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
444 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
445
446 if ((bfd_signed_vma) relocation < - 0x80000
447 || (bfd_signed_vma) relocation > 0x7ffff)
448 return bfd_reloc_overflow;
449 else
450 return bfd_reloc_ok;
451}
452
b34976b6 453static bfd_boolean
2c3fc389 454elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 455{
456 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 457 return TRUE;
a85d7ed0
NC		 458
459 return _bfd_elf_is_local_label_name (abfd, name);
460}
461
462/* Functions for the 390 ELF linker. */
463
464/* The name of the dynamic interpreter. This is put in the .interp
465 section. */
466
87049b0d 467#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 468
64285810
MS		 469/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
470 copying dynamic variables from a shared lib into an app's dynbss
471 section, and instead use a dynamic relocation to point into the
472 shared lib. */
473#define ELIMINATE_COPY_RELOCS 1
474
a85d7ed0
NC		 475/* The size in bytes of the first entry in the procedure linkage table. */
476#define PLT_FIRST_ENTRY_SIZE 32
477/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 478#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 479
480#define GOT_ENTRY_SIZE 8
481
470b557a
AK		 482#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
483
afca762f 484/* The first three entries in a global offset table are reserved,
a85d7ed0
NC		 485 and the initial contents are unimportant (we zero them out).
486 Subsequent entries look like this. See the SVR4 ABI 386
487 supplement to see how this works. */
488
489/* For the s390, simple addr offset can only be 0 - 4096.
490 To use the full 16777216 TB address space, several instructions
491 are needed to load an address in a register and execute
492 a branch( or just saving the address)
493
99c79b2e 494 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 495
496/* The first 3 words in the GOT are then reserved.
497 Word 0 is the address of the dynamic table.
498 Word 1 is a pointer to a structure describing the object
499 Word 2 is used to point to the loader entry address.
500
501 The code for PLT entries looks like this:
502
503 The GOT holds the address in the PLT to be executed.
504 The loader then gets:
3b67f094
MK		 505 48(15) = Pointer to the structure describing the object.
506 56(15) = Offset in symbol table
a85d7ed0
NC		 507 The loader must then find the module where the function is
508 and insert the address in the GOT.
509
510 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
07d6d2b8
AM		 511 LG 1,0(1) # 6 bytes Load address from GOT in r1
512 BCR 15,1 # 2 bytes Jump to address
513 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
afca762f
AK		 514 LGF 1,12(1) # 6 bytes Load rela.plt offset into r1
515 BRCL 15,-x # 6 bytes Jump to first PLT entry
07d6d2b8 516 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 517
518 Total = 32 bytes per PLT entry
519 Fixup at offset 2: relative address to GOT entry
520 Fixup at offset 22: relative branch to PLT0
a7e28bbe 521 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 522
a7e28bbe
AK		 523 A 32 bit offset into the symbol table is enough. It allows for
524 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
525 object (the main program, any shared library) is limited to 4GB in
526 size. Having a .rela.plt of 2GB would already make the .plt
527 section bigger than 8GB. */
a85d7ed0 528
9aa17453
AK		 529static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
530 {
07d6d2b8
AM		 531 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
532 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
533 0x07, 0xf1, /* br %r1 */
534 0x0d, 0x10, /* basr %r1,%r0 */
535 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
536 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
537 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
9aa17453 538 };
a85d7ed0
NC		 539
540/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 541 from R1 onto the stack at 56(15) and the loader object info
542 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 543
544/* The first entry in the PLT:
545
546 PLT0:
547 STG 1,56(15) # r1 contains the offset into the symbol table
548 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
549 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
550 LG 1,16(1) # get entry address of loader
551 BCR 15,1 # jump to loader
552
553 Fixup at offset 8: relative address to start of GOT. */
554
9aa17453
AK		 555static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
556 {
07d6d2b8
AM		 557 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
558 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
559 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
560 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
561 0x07, 0xf1, /* br %r1 */
562 0x07, 0x00, /* nopr %r0 */
563 0x07, 0x00, /* nopr %r0 */
564 0x07, 0x00 /* nopr %r0 */
9aa17453 565 };
a85d7ed0 566
a85d7ed0
NC		 567
568/* s390 ELF linker hash entry. */
569
570struct elf_s390_link_hash_entry
571{
0451c93c 572 struct elf_link_hash_entry elf;
a85d7ed0 573
5236c819
MS		 574 /* Number of GOTPLT references for a function. */
575 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 576
577#define GOT_UNKNOWN 0
578#define GOT_NORMAL 1
579#define GOT_TLS_GD 2
580#define GOT_TLS_IE 3
581#define GOT_TLS_IE_NLT 3
582 unsigned char tls_type;
470b557a
AK		 583
584 /* For pointer equality reasons we might need to change the symbol
585 type from STT_GNU_IFUNC to STT_FUNC together with its value and
586 section entry. So after alloc_dynrelocs only these values should
587 be used. In order to check whether a symbol is IFUNC use
588 s390_is_ifunc_symbol_p. */
589 bfd_vma ifunc_resolver_address;
590 asection *ifunc_resolver_section;
a85d7ed0
NC		 591};
592
69fc87f1
MS		 593#define elf_s390_hash_entry(ent) \
594 ((struct elf_s390_link_hash_entry *)(ent))
595
470b557a
AK		 596/* This structure represents an entry in the local PLT list needed for
597 local IFUNC symbols. */
598struct plt_entry
599{
600 /* The section of the local symbol.
601 Set in relocate_section and used in finish_dynamic_sections. */
602 asection *sec;
603
604 union
605 {
606 bfd_signed_vma refcount;
607 bfd_vma offset;
608 } plt;
609};
610
0ffa91dd
NC		 611/* NOTE: Keep this structure in sync with
612 the one declared in elf32-s390.c. */
69fc87f1
MS		 613struct elf_s390_obj_tdata
614{
615 struct elf_obj_tdata root;
616
470b557a
AK		 617 /* A local PLT is needed for ifunc symbols. */
618 struct plt_entry *local_plt;
619
0ffa91dd 620 /* TLS type for each local got entry. */
69fc87f1
MS		 621 char *local_got_tls_type;
622};
623
624#define elf_s390_tdata(abfd) \
625 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
626
470b557a
AK		 627#define elf_s390_local_plt(abfd) \
628 (elf_s390_tdata (abfd)->local_plt)
629
69fc87f1
MS		 630#define elf_s390_local_got_tls_type(abfd) \
631 (elf_s390_tdata (abfd)->local_got_tls_type)
632
0ffa91dd
NC		 633#define is_s390_elf(bfd) \
634 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
635 && elf_tdata (bfd) != NULL \
4dfe6ac6 636 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 637
69fc87f1 638static bfd_boolean
62d7a5f6 639elf_s390_mkobject (bfd *abfd)
69fc87f1 640{
0ffa91dd 641 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 642 S390_ELF_DATA);
69fc87f1
MS		 643}
644
645static bfd_boolean
2c3fc389 646elf_s390_object_p (bfd *abfd)
69fc87f1 647{
69fc87f1
MS		 648 /* Set the right machine number for an s390 elf32 file. */
649 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
650}
651
a85d7ed0
NC		 652/* s390 ELF linker hash table. */
653
654struct elf_s390_link_hash_table
655{
0451c93c 656 struct elf_link_hash_table elf;
a85d7ed0 657
0451c93c 658 /* Short-cuts to get to dynamic linker sections. */
470b557a 659 asection *irelifunc;
ec338859 660
69fc87f1
MS		 661 union {
662 bfd_signed_vma refcount;
663 bfd_vma offset;
664 } tls_ldm_got;
665
b4cbbe8f
AK		 666 /* Options passed from the linker. */
667 struct s390_elf_params *params;
0451c93c 668};
a85d7ed0
NC		 669
670/* Get the s390 ELF linker hash table from a link_info structure. */
671
ceada896
AA		 672#define elf_s390_hash_table(p) \
673 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
674 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 675
470b557a
AK		 676#define ELF64 1
677#include "elf-s390-common.c"
678
a85d7ed0
NC		 679/* Create an entry in an s390 ELF linker hash table. */
680
681static struct bfd_hash_entry *
2c3fc389
NC		 682link_hash_newfunc (struct bfd_hash_entry *entry,
683 struct bfd_hash_table *table,
684 const char *string)
a85d7ed0 685{
a85d7ed0
NC		 686 /* Allocate the structure if it has not already been allocated by a
687 subclass. */
0451c93c
MS		 688 if (entry == NULL)
689 {
690 entry = bfd_hash_allocate (table,
691 sizeof (struct elf_s390_link_hash_entry));
692 if (entry == NULL)
693 return entry;
694 }
a85d7ed0
NC		 695
696 /* Call the allocation method of the superclass. */
0451c93c
MS		 697 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
698 if (entry != NULL)
a85d7ed0 699 {
0451c93c
MS		 700 struct elf_s390_link_hash_entry *eh;
701
702 eh = (struct elf_s390_link_hash_entry *) entry;
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;
986f0783 718 size_t 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
69fc87f1
MS		 747 if (ind->root.type == bfd_link_hash_indirect
748 && dir->got.refcount <= 0)
749 {
750 edir->tls_type = eind->tls_type;
751 eind->tls_type = GOT_UNKNOWN;
752 }
753
64285810
MS		 754 if (ELIMINATE_COPY_RELOCS
755 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 756 && dir->dynamic_adjusted)
757 {
758 /* If called to transfer flags for a weakdef during processing
759 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
760 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 761 if (dir->versioned != versioned_hidden)
762 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 763 dir->ref_regular |= ind->ref_regular;
764 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
765 dir->needs_plt |= ind->needs_plt;
766 }
64285810 767 else
fcfa13d2 768 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 769}
a85d7ed0 770
69fc87f1 771static int
2c3fc389
NC		 772elf_s390_tls_transition (struct bfd_link_info *info,
773 int r_type,
774 int is_local)
69fc87f1 775{
0e1862bb 776 if (bfd_link_pic (info))
69fc87f1
MS		 777 return r_type;
778
779 switch (r_type)
780 {
781 case R_390_TLS_GD64:
782 case R_390_TLS_IE64:
783 if (is_local)
784 return R_390_TLS_LE64;
785 return R_390_TLS_IE64;
786 case R_390_TLS_GOTIE64:
787 if (is_local)
788 return R_390_TLS_LE64;
789 return R_390_TLS_GOTIE64;
790 case R_390_TLS_LDM64:
791 return R_390_TLS_LE64;
792 }
793
794 return r_type;
795}
796
a85d7ed0
NC		 797/* Look through the relocs for a section during the first phase, and
798 allocate space in the global offset table or procedure linkage
799 table. */
800
b34976b6 801static bfd_boolean
4dfe6ac6
NC		 802elf_s390_check_relocs (bfd *abfd,
803 struct bfd_link_info *info,
804 asection *sec,
805 const Elf_Internal_Rela *relocs)
a85d7ed0 806{
0451c93c 807 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 808 Elf_Internal_Shdr *symtab_hdr;
809 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 810 const Elf_Internal_Rela *rel;
811 const Elf_Internal_Rela *rel_end;
a85d7ed0 812 asection *sreloc;
5236c819 813 bfd_signed_vma *local_got_refcounts;
69fc87f1 814 int tls_type, old_tls_type;
a85d7ed0 815
0e1862bb 816 if (bfd_link_relocatable (info))
b34976b6 817 return TRUE;
a85d7ed0 818
0ffa91dd
NC		 819 BFD_ASSERT (is_s390_elf (abfd));
820
0451c93c 821 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 822 if (htab == NULL)
823 return FALSE;
824
0ffa91dd 825 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 826 sym_hashes = elf_sym_hashes (abfd);
5236c819 827 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 828
a85d7ed0
NC		 829 sreloc = NULL;
830
831 rel_end = relocs + sec->reloc_count;
832 for (rel = relocs; rel < rel_end; rel++)
833 {
69fc87f1 834 unsigned int r_type;
d42c267e 835 unsigned int r_symndx;
a85d7ed0 836 struct elf_link_hash_entry *h;
470b557a 837 Elf_Internal_Sym *isym;
a85d7ed0
NC		 838
839 r_symndx = ELF64_R_SYM (rel->r_info);
840
0451c93c
MS		 841 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
842 {
695344c0 843 /* xgettext:c-format */
871b3ab2 844 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 845 abfd, r_symndx);
b34976b6 846 return FALSE;
0451c93c
MS		 847 }
848
a85d7ed0 849 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 850 {
851 /* A local symbol. */
f1dfbfdb 852 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
470b557a
AK		 853 abfd, r_symndx);
854 if (isym == NULL)
855 return FALSE;
856
857 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
858 {
859 struct plt_entry *plt;
860
0cb79d69
AK		 861 if (htab->elf.dynobj == NULL)
862 htab->elf.dynobj = abfd;
863
470b557a
AK		 864 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
865 return FALSE;
866
867 if (local_got_refcounts == NULL)
868 {
869 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
870 return FALSE;
871 local_got_refcounts = elf_local_got_refcounts (abfd);
872 }
873 plt = elf_s390_local_plt (abfd);
874 plt[r_symndx].plt.refcount++;
875 }
876 h = NULL;
877 }
a85d7ed0 878 else
973a3492
L		 879 {
880 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
881 while (h->root.type == bfd_link_hash_indirect
882 || h->root.type == bfd_link_hash_warning)
883 h = (struct elf_link_hash_entry *) h->root.u.i.link;
884 }
a85d7ed0 885
5236c819
MS		 886 /* Create got section and local_got_refcounts array if they
887 are needed. */
69fc87f1
MS		 888 r_type = elf_s390_tls_transition (info,
889 ELF64_R_TYPE (rel->r_info),
890 h == NULL);
891 switch (r_type)
a85d7ed0
NC		 892 {
893 case R_390_GOT12:
947216bf 894 case R_390_GOT16:
bd1ea41b 895 case R_390_GOT20:
a85d7ed0
NC		 896 case R_390_GOT32:
897 case R_390_GOT64:
898 case R_390_GOTENT:
5236c819
MS		 899 case R_390_GOTPLT12:
900 case R_390_GOTPLT16:
bd1ea41b 901 case R_390_GOTPLT20:
5236c819
MS		 902 case R_390_GOTPLT32:
903 case R_390_GOTPLT64:
904 case R_390_GOTPLTENT:
69fc87f1
MS		 905 case R_390_TLS_GD64:
906 case R_390_TLS_GOTIE12:
bd1ea41b 907 case R_390_TLS_GOTIE20:
69fc87f1
MS		 908 case R_390_TLS_GOTIE64:
909 case R_390_TLS_IEENT:
910 case R_390_TLS_IE64:
911 case R_390_TLS_LDM64:
5236c819
MS		 912 if (h == NULL
913 && local_got_refcounts == NULL)
a85d7ed0 914 {
470b557a 915 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 916 return FALSE;
470b557a 917 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 918 }
470b557a 919
5236c819
MS		 920 /* Fall through. */
921 case R_390_GOTOFF16:
922 case R_390_GOTOFF32:
923 case R_390_GOTOFF64:
0451c93c
MS		 924 case R_390_GOTPC:
925 case R_390_GOTPCDBL:
f41345a7 926 if (htab->elf.sgot == NULL)
0451c93c
MS		 927 {
928 if (htab->elf.dynobj == NULL)
929 htab->elf.dynobj = abfd;
ce558b89 930 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 931 return FALSE;
0451c93c 932 }
5236c819
MS		 933 }
934
470b557a
AK		 935 if (h != NULL)
936 {
937 if (htab->elf.dynobj == NULL)
938 htab->elf.dynobj = abfd;
939 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
940 return FALSE;
941
942 /* Make sure an IFUNC symbol defined in a non-shared object
943 always gets a PLT slot. */
944 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
945 {
946 /* The symbol is called by the dynamic loader in order
947 to resolve the relocation. So it is in fact also
948 referenced. */
949 h->ref_regular = 1;
950 h->needs_plt = 1;
951 }
952 }
953
69fc87f1 954 switch (r_type)
5236c819 955 {
5236c819
MS		 956 case R_390_GOTPC:
957 case R_390_GOTPCDBL:
470b557a
AK		 958 /* These relocs do not need a GOT slot. They just load the
959 GOT pointer itself or address something else relative to
960 the GOT. Since the GOT pointer has been set up above we
961 are done. */
0451c93c 962 break;
d47b13e0
AK		 963 case R_390_GOTOFF16:
964 case R_390_GOTOFF32:
965 case R_390_GOTOFF64:
966 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
967 break;
1a0670f3 968 /* Fall through. */
ec338859 969
fb798c50 970 case R_390_PLT12DBL:
947216bf 971 case R_390_PLT16DBL:
fb798c50 972 case R_390_PLT24DBL:
a85d7ed0
NC		 973 case R_390_PLT32:
974 case R_390_PLT32DBL:
975 case R_390_PLT64:
5236c819
MS		 976 case R_390_PLTOFF16:
977 case R_390_PLTOFF32:
978 case R_390_PLTOFF64:
a85d7ed0 979 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 980 actually build the entry in adjust_dynamic_symbol,
981 because this might be a case of linking PIC code which is
982 never referenced by a dynamic object, in which case we
983 don't need to generate a procedure linkage table entry
984 after all. */
ec338859 985
a85d7ed0 986 /* If this is a local symbol, we resolve it directly without
947216bf 987 creating a procedure linkage table entry. */
5236c819
MS		 988 if (h != NULL)
989 {
f5385ebf 990 h->needs_plt = 1;
5236c819
MS		 991 h->plt.refcount += 1;
992 }
993 break;
ec338859 994
5236c819
MS		 995 case R_390_GOTPLT12:
996 case R_390_GOTPLT16:
bd1ea41b 997 case R_390_GOTPLT20:
5236c819
MS		 998 case R_390_GOTPLT32:
999 case R_390_GOTPLT64:
1000 case R_390_GOTPLTENT:
1001 /* This symbol requires either a procedure linkage table entry
1002 or an entry in the local got. We actually build the entry
1003 in adjust_dynamic_symbol because whether this is really a
1004 global reference can change and with it the fact if we have
1005 to create a plt entry or a local got entry. To be able to
1006 make a once global symbol a local one we have to keep track
1007 of the number of gotplt references that exist for this
1008 symbol. */
1009 if (h != NULL)
1010 {
1011 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1012 h->needs_plt = 1;
5236c819
MS		 1013 h->plt.refcount += 1;
1014 }
69fc87f1
MS		 1015 else
1016 local_got_refcounts[r_symndx] += 1;
1017 break;
1018
1019 case R_390_TLS_LDM64:
1020 htab->tls_ldm_got.refcount += 1;
1021 break;
1022
1023 case R_390_TLS_IE64:
1024 case R_390_TLS_GOTIE12:
bd1ea41b 1025 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1026 case R_390_TLS_GOTIE64:
1027 case R_390_TLS_IEENT:
0e1862bb 1028 if (bfd_link_pic (info))
69fc87f1
MS		 1029 info->flags |= DF_STATIC_TLS;
1030 /* Fall through */
1031
1032 case R_390_GOT12:
26e41594 1033 case R_390_GOT16:
bd1ea41b 1034 case R_390_GOT20:
69fc87f1
MS		 1035 case R_390_GOT32:
1036 case R_390_GOT64:
1037 case R_390_GOTENT:
1038 case R_390_TLS_GD64:
1039 /* This symbol requires a global offset table entry. */
1040 switch (r_type)
1041 {
1042 default:
1043 case R_390_GOT12:
1044 case R_390_GOT16:
bd1ea41b 1045 case R_390_GOT20:
69fc87f1
MS		 1046 case R_390_GOT32:
1047 case R_390_GOTENT:
1048 tls_type = GOT_NORMAL;
1049 break;
1050 case R_390_TLS_GD64:
1051 tls_type = GOT_TLS_GD;
1052 break;
1053 case R_390_TLS_IE64:
1054 case R_390_TLS_GOTIE64:
1055 tls_type = GOT_TLS_IE;
1056 break;
1057 case R_390_TLS_GOTIE12:
bd1ea41b 1058 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1059 case R_390_TLS_IEENT:
1060 tls_type = GOT_TLS_IE_NLT;
1061 break;
1062 }
1063
1064 if (h != NULL)
1065 {
1066 h->got.refcount += 1;
1067 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1068 }
5236c819
MS		 1069 else
1070 {
1071 local_got_refcounts[r_symndx] += 1;
69fc87f1 1072 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1073 }
69fc87f1
MS		 1074 /* If a TLS symbol is accessed using IE at least once,
1075 there is no point to use dynamic model for it. */
1076 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1077 {
1078 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1079 {
4eca0228 1080 _bfd_error_handler
695344c0 1081 /* xgettext:c-format */
871b3ab2 1082 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1083 abfd, h->root.root.string);
69fc87f1
MS		 1084 return FALSE;
1085 }
1086 if (old_tls_type > tls_type)
1087 tls_type = old_tls_type;
1088 }
1089
1090 if (old_tls_type != tls_type)
1091 {
1092 if (h != NULL)
1093 elf_s390_hash_entry (h)->tls_type = tls_type;
1094 else
1095 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1096 }
1097
1098 if (r_type != R_390_TLS_IE64)
1099 break;
1100 /* Fall through */
1101
1102 case R_390_TLS_LE64:
e00d879a
AK		 1103 /* For static linking and executables this reloc will be
1104 calculated at linktime otherwise a TLS_TPOFF runtime
1105 reloc will be generated. */
0e1862bb 1106 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1107 break;
1108
0e1862bb 1109 if (!bfd_link_pic (info))
69fc87f1
MS		 1110 break;
1111 info->flags |= DF_STATIC_TLS;
1112 /* Fall through */
ec338859 1113
947216bf
AM		 1114 case R_390_8:
1115 case R_390_16:
a85d7ed0
NC		 1116 case R_390_32:
1117 case R_390_64:
fb798c50 1118 case R_390_PC12DBL:
947216bf
AM		 1119 case R_390_PC16:
1120 case R_390_PC16DBL:
fb798c50 1121 case R_390_PC24DBL:
a85d7ed0
NC		 1122 case R_390_PC32:
1123 case R_390_PC32DBL:
1124 case R_390_PC64:
99ba5125 1125 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1126 {
1127 /* If this reloc is in a read-only section, we might
1128 need a copy reloc. We can't check reliably at this
1129 stage whether the section is read-only, as input
1130 sections have not yet been mapped to output sections.
1131 Tentatively set the flag for now, and correct in
1132 adjust_dynamic_symbol. */
f5385ebf 1133 h->non_got_ref = 1;
ec338859 1134
0e1862bb 1135 if (!bfd_link_pic (info))
470b557a
AK		 1136 {
1137 /* We may need a .plt entry if the function this reloc
1138 refers to is in a shared lib. */
1139 h->plt.refcount += 1;
1140 }
0451c93c 1141 }
ec338859 1142
a85d7ed0 1143 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1144 against a global symbol, or a non PC relative reloc
1145 against a local symbol, then we need to copy the reloc
1146 into the shared library. However, if we are linking with
1147 -Bsymbolic, we do not need to copy a reloc against a
1148 global symbol which is defined in an object we are
1149 including in the link (i.e., DEF_REGULAR is set). At
1150 this point we have not seen all the input files, so it is
1151 possible that DEF_REGULAR is not set now but will be set
1152 later (it is never cleared). In case of a weak definition,
1153 DEF_REGULAR may be cleared later by a strong definition in
1154 a shared library. We account for that possibility below by
1155 storing information in the relocs_copied field of the hash
1156 table entry. A similar situation occurs when creating
1157 shared libraries and symbol visibility changes render the
1158 symbol local.
1159
1160 If on the other hand, we are creating an executable, we
1161 may need to keep relocations for symbols satisfied by a
1162 dynamic library if we manage to avoid copy relocs for the
1163 symbol. */
0e1862bb 1164 if ((bfd_link_pic (info)
0451c93c
MS		 1165 && (sec->flags & SEC_ALLOC) != 0
1166 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1167 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1168 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1169 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1170 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1171 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1172 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1173 || (h != NULL
8c21ca21 1174 && (! SYMBOLIC_BIND (info, h)
0451c93c 1175 || h->root.type == bfd_link_hash_defweak
f5385ebf 1176 || !h->def_regular))))
64285810 1177 || (ELIMINATE_COPY_RELOCS
0e1862bb 1178 && !bfd_link_pic (info)
0451c93c
MS		 1179 && (sec->flags & SEC_ALLOC) != 0
1180 && h != NULL
1181 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1182 || !h->def_regular)))
a85d7ed0 1183 {
00d8c7a9
AK		 1184 struct elf_dyn_relocs *p;
1185 struct elf_dyn_relocs **head;
ec338859 1186
0451c93c
MS		 1187 /* We must copy these reloc types into the output file.
1188 Create a reloc section in dynobj and make room for
1189 this reloc. */
a85d7ed0
NC		 1190 if (sreloc == NULL)
1191 {
440e9cd2
AK		 1192 if (htab->elf.dynobj == NULL)
1193 htab->elf.dynobj = abfd;
1194
83bac4b0
NC		 1195 sreloc = _bfd_elf_make_dynamic_reloc_section
1196 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1197
a85d7ed0 1198 if (sreloc == NULL)
83bac4b0 1199 return FALSE;
a85d7ed0 1200 }
ec338859 1201
0451c93c
MS		 1202 /* If this is a global symbol, we count the number of
1203 relocations we need for this symbol. */
1204 if (h != NULL)
a85d7ed0 1205 {
190eb1dd 1206 head = &h->dyn_relocs;
0451c93c
MS		 1207 }
1208 else
1209 {
ec338859
AM		 1210 /* Track dynamic relocs needed for local syms too.
1211 We really need local syms available to do this
1212 easily. Oh well. */
ec338859 1213 asection *s;
6edfbbad
DJ		 1214 void *vpp;
1215
f1dfbfdb 1216 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
87d72d41
AM		 1217 abfd, r_symndx);
1218 if (isym == NULL)
b34976b6 1219 return FALSE;
ec338859 1220
87d72d41
AM		 1221 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1222 if (s == NULL)
1223 s = sec;
1224
6edfbbad 1225 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1226 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1227 }
1228
1229 p = *head;
1230 if (p == NULL || p->sec != sec)
1231 {
986f0783 1232 size_t amt = sizeof *p;
00d8c7a9 1233 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1234 bfd_alloc (htab->elf.dynobj, amt));
1235 if (p == NULL)
b34976b6 1236 return FALSE;
ec338859
AM		 1237 p->next = *head;
1238 *head = p;
1239 p->sec = sec;
1240 p->count = 0;
1241 p->pc_count = 0;
a85d7ed0 1242 }
ec338859
AM		 1243
1244 p->count += 1;
1245 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1246 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1247 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1248 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1249 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1250 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1251 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1252 p->pc_count += 1;
a85d7ed0 1253 }
a85d7ed0 1254 break;
ec338859 1255
a85d7ed0
NC		 1256 /* This relocation describes the C++ object vtable hierarchy.
1257 Reconstruct it for later use during GC. */
947216bf 1258 case R_390_GNU_VTINHERIT:
c152c796 1259 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1260 return FALSE;
947216bf 1261 break;
ec338859 1262
a85d7ed0
NC		 1263 /* This relocation describes which C++ vtable entries are actually
1264 used. Record for later use during GC. */
947216bf 1265 case R_390_GNU_VTENTRY:
a0ea3a14 1266 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1267 return FALSE;
947216bf 1268 break;
ec338859 1269
a85d7ed0
NC		 1270 default:
1271 break;
1272 }
1273 }
1274
b34976b6 1275 return TRUE;
a85d7ed0
NC		 1276}
1277
1278/* Return the section that should be marked against GC for a given
1279 relocation. */
1280
1281static asection *
07adf181
AM		 1282elf_s390_gc_mark_hook (asection *sec,
1283 struct bfd_link_info *info,
1284 Elf_Internal_Rela *rel,
1285 struct elf_link_hash_entry *h,
1286 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1287{
1288 if (h != NULL)
07adf181
AM		 1289 switch (ELF64_R_TYPE (rel->r_info))
1290 {
1291 case R_390_GNU_VTINHERIT:
1292 case R_390_GNU_VTENTRY:
1293 return NULL;
1294 }
1295
1296 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1297}
1298
5236c819
MS		 1299/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1300 entry but we found we will not create any. Called when we find we will
1301 not have any PLT for this symbol, by for example
1302 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1303 or elf_s390_size_dynamic_sections if no dynamic sections will be
1304 created (we're only linking static objects). */
1305
1306static void
2c3fc389 1307elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1308{
1309 if (h->elf.root.type == bfd_link_hash_warning)
1310 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1311
1312 if (h->gotplt_refcount <= 0)
1313 return;
1314
1315 /* We simply add the number of gotplt references to the number
1316 * of got references for this symbol. */
1317 h->elf.got.refcount += h->gotplt_refcount;
1318 h->gotplt_refcount = -1;
1319}
1320
a85d7ed0
NC		 1321/* Adjust a symbol defined by a dynamic object and referenced by a
1322 regular object. The current definition is in some section of the
1323 dynamic object, but we're not including those sections. We have to
1324 change the definition to something the rest of the link can
1325 understand. */
1326
b34976b6 1327static bfd_boolean
4dfe6ac6
NC		 1328elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1329 struct elf_link_hash_entry *h)
a85d7ed0 1330{
0451c93c 1331 struct elf_s390_link_hash_table *htab;
5474d94f 1332 asection *s, *srel;
a85d7ed0 1333
470b557a
AK		 1334 /* STT_GNU_IFUNC symbol must go through PLT. */
1335 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1336 {
1337 /* All local STT_GNU_IFUNC references must be treated as local
1338 calls via local PLT. */
1339 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1340 {
1341 bfd_size_type pc_count = 0, count = 0;
1342 struct elf_dyn_relocs **pp;
d8ee9e44
AK		 1343 struct elf_dyn_relocs *p;
1344
190eb1dd 1345 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
d8ee9e44
AK		 1346 {
1347 pc_count += p->pc_count;
1348 p->count -= p->pc_count;
1349 p->pc_count = 0;
1350 count += p->count;
1351 if (p->count == 0)
1352 *pp = p->next;
1353 else
1354 pp = &p->next;
1355 }
1356
1357 if (pc_count || count)
1358 {
1359 h->needs_plt = 1;
1360 h->non_got_ref = 1;
1361 if (h->plt.refcount <= 0)
1362 h->plt.refcount = 1;
1363 else
1364 h->plt.refcount += 1;
1365 }
1366 }
1367
1368 if (h->plt.refcount <= 0)
1369 {
1370 h->plt.offset = (bfd_vma) -1;
1371 h->needs_plt = 0;
1372 }
1373 return TRUE;
1374 }
470b557a 1375
a85d7ed0
NC		 1376 /* If this is a function, put it in the procedure linkage table. We
1377 will fill in the contents of the procedure linkage table later
cedb70c5 1378 (although we could actually do it here). */
a85d7ed0 1379 if (h->type == STT_FUNC
f5385ebf 1380 || h->needs_plt)
a85d7ed0 1381 {
0451c93c 1382 if (h->plt.refcount <= 0
8c21ca21 1383 || SYMBOL_CALLS_LOCAL (info, h)
10e7c045 1384 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a85d7ed0
NC		 1385 {
1386 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1387 file, but the symbol was never referred to by a dynamic
1388 object, or if all references were garbage collected. In
0451c93c
MS		 1389 such a case, we don't actually need to build a procedure
1390 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1391 h->plt.offset = (bfd_vma) -1;
f5385ebf 1392 h->needs_plt = 0;
5236c819 1393 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1394 }
1395
b34976b6 1396 return TRUE;
a85d7ed0 1397 }
bbd7ec4a 1398 else
0451c93c
MS		 1399 /* It's possible that we incorrectly decided a .plt reloc was
1400 needed for an R_390_PC32 reloc to a non-function sym in
1401 check_relocs. We can't decide accurately between function and
1402 non-function syms in check-relocs; Objects loaded later in
1403 the link may change h->type. So fix it now. */
bbd7ec4a 1404 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1405
1406 /* If this is a weak symbol, and there is a real definition, the
1407 processor independent code will have arranged for us to see the
1408 real definition first, and we can just use the same value. */
60d67dc8 1409 if (h->is_weakalias)
a85d7ed0 1410 {
60d67dc8
AM		 1411 struct elf_link_hash_entry *def = weakdef (h);
1412 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1413 h->root.u.def.section = def->root.u.def.section;
1414 h->root.u.def.value = def->root.u.def.value;
64285810 1415 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1416 h->non_got_ref = def->non_got_ref;
b34976b6 1417 return TRUE;
a85d7ed0
NC		 1418 }
1419
1420 /* This is a reference to a symbol defined by a dynamic object which
1421 is not a function. */
1422
1423 /* If we are creating a shared library, we must presume that the
1424 only references to the symbol are via the global offset table.
1425 For such cases we need not do anything here; the relocations will
1426 be handled correctly by relocate_section. */
0e1862bb 1427 if (bfd_link_pic (info))
b34976b6 1428 return TRUE;
a85d7ed0
NC		 1429
1430 /* If there are no references to this symbol that do not use the
1431 GOT, we don't need to generate a copy reloc. */
f5385ebf 1432 if (!h->non_got_ref)
b34976b6 1433 return TRUE;
a85d7ed0 1434
0451c93c
MS		 1435 /* If -z nocopyreloc was given, we won't generate them either. */
1436 if (info->nocopyreloc)
1437 {
f5385ebf 1438 h->non_got_ref = 0;
b34976b6 1439 return TRUE;
0451c93c
MS		 1440 }
1441
3bf083ed
AM		 1442 /* If we don't find any dynamic relocs in read-only sections, then
1443 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5dbc8b37 1444 if (ELIMINATE_COPY_RELOCS && !_bfd_elf_readonly_dynrelocs (h))
0451c93c 1445 {
3bf083ed
AM		 1446 h->non_got_ref = 0;
1447 return TRUE;
0451c93c
MS		 1448 }
1449
a85d7ed0
NC		 1450 /* We must allocate the symbol in our .dynbss section, which will
1451 become part of the .bss section of the executable. There will be
1452 an entry for this symbol in the .dynsym section. The dynamic
1453 object will contain position independent code, so all references
1454 from the dynamic object to this symbol will go through the global
1455 offset table. The dynamic linker will use the .dynsym entry to
1456 determine the address it must put in the global offset table, so
1457 both the dynamic object and the regular object will refer to the
1458 same memory location for the variable. */
1459
0451c93c 1460 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1461 if (htab == NULL)
1462 return FALSE;
a85d7ed0 1463
0451c93c
MS		 1464 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1465 copy the initial value out of the dynamic object and into the
1466 runtime process image. */
5474d94f
AM		 1467 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1468 {
1469 s = htab->elf.sdynrelro;
1470 srel = htab->elf.sreldynrelro;
1471 }
1472 else
1473 {
1474 s = htab->elf.sdynbss;
1475 srel = htab->elf.srelbss;
1476 }
1d7e9d18 1477 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1478 {
5474d94f 1479 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1480 h->needs_copy = 1;
a85d7ed0
NC		 1481 }
1482
6cabe1ea 1483 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1484}
1485
0451c93c
MS		 1486/* Allocate space in .plt, .got and associated reloc sections for
1487 dynamic relocs. */
1488
b34976b6 1489static bfd_boolean
4dfe6ac6
NC		 1490allocate_dynrelocs (struct elf_link_hash_entry *h,
1491 void * inf)
0451c93c
MS		 1492{
1493 struct bfd_link_info *info;
1494 struct elf_s390_link_hash_table *htab;
00d8c7a9 1495 struct elf_dyn_relocs *p;
0451c93c 1496
e92d460e 1497 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1498 return TRUE;
0451c93c
MS		 1499
1500 info = (struct bfd_link_info *) inf;
1501 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1502 if (htab == NULL)
1503 return FALSE;
0451c93c 1504
470b557a
AK		 1505 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1506 here if it is defined and referenced in a non-shared object. */
1507 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1508 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1509 else if (htab->elf.dynamic_sections_created
1510 && h->plt.refcount > 0)
0451c93c
MS		 1511 {
1512 /* Make sure this symbol is output as a dynamic symbol.
1513 Undefined weak syms won't yet be marked as dynamic. */
1514 if (h->dynindx == -1
f5385ebf 1515 && !h->forced_local)
0451c93c 1516 {
c152c796 1517 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1518 return FALSE;
0451c93c
MS		 1519 }
1520
0e1862bb 1521 if (bfd_link_pic (info)
4ec72bde 1522 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1523 {
f41345a7 1524 asection *s = htab->elf.splt;
0451c93c
MS		 1525
1526 /* If this is the first .plt entry, make room for the special
1527 first entry. */
eea6121a
AM		 1528 if (s->size == 0)
1529 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1530
eea6121a 1531 h->plt.offset = s->size;
0451c93c
MS		 1532
1533 /* If this symbol is not defined in a regular file, and we are
1534 not generating a shared library, then set the symbol to this
1535 location in the .plt. This is required to make function
1536 pointers compare as equal between the normal executable and
1537 the shared library. */
0e1862bb 1538 if (! bfd_link_pic (info)
f5385ebf 1539 && !h->def_regular)
0451c93c
MS		 1540 {
1541 h->root.u.def.section = s;
1542 h->root.u.def.value = h->plt.offset;
1543 }
ec338859 1544
0451c93c 1545 /* Make room for this entry. */
eea6121a 1546 s->size += PLT_ENTRY_SIZE;
ec338859 1547
afca762f 1548 /* We also need to make an entry in the .got.plt section. */
f41345a7 1549 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1550
1551 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1552 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1553 }
1554 else
1555 {
1556 h->plt.offset = (bfd_vma) -1;
f5385ebf 1557 h->needs_plt = 0;
5236c819 1558 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1559 }
1560 }
1561 else
1562 {
1563 h->plt.offset = (bfd_vma) -1;
f5385ebf 1564 h->needs_plt = 0;
5236c819 1565 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1566 }
1567
69fc87f1
MS		 1568 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1569 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1570 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1571 we can save the dynamic TLS relocation. */
1572 if (h->got.refcount > 0
0e1862bb 1573 && !bfd_link_pic (info)
69fc87f1
MS		 1574 && h->dynindx == -1
1575 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1576 {
1577 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1578 /* For the GOTIE access without a literal pool entry the offset has
1579 to be stored somewhere. The immediate value in the instruction
1580 is not bit enough so the value is stored in the got. */
1581 {
f41345a7
AK		 1582 h->got.offset = htab->elf.sgot->size;
1583 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1584 }
1585 else
1586 h->got.offset = (bfd_vma) -1;
1587 }
1588 else if (h->got.refcount > 0)
0451c93c
MS		 1589 {
1590 asection *s;
b34976b6 1591 bfd_boolean dyn;
69fc87f1 1592 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1593
1594 /* Make sure this symbol is output as a dynamic symbol.
1595 Undefined weak syms won't yet be marked as dynamic. */
1596 if (h->dynindx == -1
f5385ebf 1597 && !h->forced_local)
0451c93c 1598 {
c152c796 1599 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1600 return FALSE;
0451c93c
MS		 1601 }
1602
f41345a7 1603 s = htab->elf.sgot;
eea6121a
AM		 1604 h->got.offset = s->size;
1605 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1606 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1607 if (tls_type == GOT_TLS_GD)
eea6121a 1608 s->size += GOT_ENTRY_SIZE;
0451c93c 1609 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1610 /* R_390_TLS_IE64 needs one dynamic relocation,
1611 R_390_TLS_GD64 needs one if local symbol and two if global. */
1612 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1613 || tls_type >= GOT_TLS_IE)
f41345a7 1614 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1615 else if (tls_type == GOT_TLS_GD)
f41345a7 1616 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
10e7c045 1617 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
0e1862bb 1618 && (bfd_link_pic (info)
82058a73 1619 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1620 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1621 }
1622 else
1623 h->got.offset = (bfd_vma) -1;
1624
190eb1dd 1625 if (h->dyn_relocs == NULL)
b34976b6 1626 return TRUE;
0451c93c
MS		 1627
1628 /* In the shared -Bsymbolic case, discard space allocated for
1629 dynamic pc-relative relocs against symbols which turn out to be
1630 defined in regular objects. For the normal shared case, discard
1631 space for pc-relative relocs that have become local due to symbol
1632 visibility changes. */
1633
0e1862bb 1634 if (bfd_link_pic (info))
0451c93c 1635 {
8c21ca21 1636 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1637 {
00d8c7a9 1638 struct elf_dyn_relocs **pp;
0451c93c 1639
190eb1dd 1640 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
0451c93c
MS		 1641 {
1642 p->count -= p->pc_count;
1643 p->pc_count = 0;
1644 if (p->count == 0)
1645 *pp = p->next;
1646 else
1647 pp = &p->next;
1648 }
1649 }
82058a73
MS		 1650
1651 /* Also discard relocs on undefined weak syms with non-default
1652 visibility. */
190eb1dd 1653 if (h->dyn_relocs != NULL
82058a73 1654 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1655 {
b27bb18f
L		 1656 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1657 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
190eb1dd 1658 h->dyn_relocs = NULL;
22d606e9
AM		 1659
1660 /* Make sure undefined weak symbols are output as a dynamic
1661 symbol in PIEs. */
1662 else if (h->dynindx == -1
1663 && !h->forced_local)
1664 {
1665 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1666 return FALSE;
1667 }
1668 }
0451c93c 1669 }
64285810 1670 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1671 {
1672 /* For the non-shared case, discard space for relocs against
1673 symbols which turn out to need copy relocs or are not
1674 dynamic. */
1675
f5385ebf
AM		 1676 if (!h->non_got_ref
1677 && ((h->def_dynamic
1678 && !h->def_regular)
0451c93c
MS		 1679 || (htab->elf.dynamic_sections_created
1680 && (h->root.type == bfd_link_hash_undefweak
1681 || h->root.type == bfd_link_hash_undefined))))
1682 {
1683 /* Make sure this symbol is output as a dynamic symbol.
1684 Undefined weak syms won't yet be marked as dynamic. */
1685 if (h->dynindx == -1
f5385ebf 1686 && !h->forced_local)
0451c93c 1687 {
c152c796 1688 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1689 return FALSE;
0451c93c
MS		 1690 }
1691
1692 /* If that succeeded, we know we'll be keeping all the
1693 relocs. */
1694 if (h->dynindx != -1)
1695 goto keep;
1696 }
1697
190eb1dd 1698 h->dyn_relocs = NULL;
0451c93c 1699
ec338859 1700 keep: ;
0451c93c
MS		 1701 }
1702
1703 /* Finally, allocate space. */
190eb1dd 1704 for (p = h->dyn_relocs; p != NULL; p = p->next)
0451c93c
MS		 1705 {
1706 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1707 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1708 }
1709
b34976b6 1710 return TRUE;
0451c93c
MS		 1711}
1712
a85d7ed0
NC		 1713/* Set the sizes of the dynamic sections. */
1714
b34976b6 1715static bfd_boolean
4dfe6ac6
NC		 1716elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1717 struct bfd_link_info *info)
a85d7ed0 1718{
0451c93c 1719 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1720 bfd *dynobj;
1721 asection *s;
b34976b6 1722 bfd_boolean relocs;
0451c93c 1723 bfd *ibfd;
a85d7ed0 1724
0451c93c 1725 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1726 if (htab == NULL)
1727 return FALSE;
1728
0451c93c
MS		 1729 dynobj = htab->elf.dynobj;
1730 if (dynobj == NULL)
1731 abort ();
a85d7ed0 1732
0451c93c 1733 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1734 {
1735 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1736 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1737 {
3d4d4302 1738 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1739 if (s == NULL)
1740 abort ();
eea6121a 1741 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1742 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1743 }
1744 }
a85d7ed0 1745
afca762f
AK		 1746 if (htab->elf.sgot && s390_gotplt_after_got_p (info))
1747 {
1748 /* _bfd_elf_create_got_section adds the got header size always
1749 to .got.plt but we need it in .got if this section comes
1750 first. */
1751 htab->elf.sgot->size += 3 * GOT_ENTRY_SIZE;
1752 htab->elf.sgotplt->size -= 3 * GOT_ENTRY_SIZE;
1753
1754 /* Make the _GLOBAL_OFFSET_TABLE_ symbol point to the .got
1755 instead of .got.plt. */
1756 htab->elf.hgot->root.u.def.section = htab->elf.sgot;
1757 htab->elf.hgot->root.u.def.value = 0;
1758 }
1759
0451c93c
MS		 1760 /* Set up .got offsets for local syms, and space for local dynamic
1761 relocs. */
c72f2fb2 1762 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1763 {
0451c93c
MS		 1764 bfd_signed_vma *local_got;
1765 bfd_signed_vma *end_local_got;
69fc87f1 1766 char *local_tls_type;
0451c93c
MS		 1767 bfd_size_type locsymcount;
1768 Elf_Internal_Shdr *symtab_hdr;
1769 asection *srela;
470b557a
AK		 1770 struct plt_entry *local_plt;
1771 unsigned int i;
a85d7ed0 1772
0ffa91dd 1773 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1774 continue;
1775
0451c93c 1776 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1777 {
00d8c7a9 1778 struct elf_dyn_relocs *p;
0451c93c 1779
6edfbbad 1780 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1781 {
ec338859
AM		 1782 if (!bfd_is_abs_section (p->sec)
1783 && bfd_is_abs_section (p->sec->output_section))
1784 {
1785 /* Input section has been discarded, either because
1786 it is a copy of a linkonce section or due to
1787 linker script /DISCARD/, so we'll be discarding
1788 the relocs too. */
1789 }
248866a8 1790 else if (p->count != 0)
ec338859
AM		 1791 {
1792 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1793 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1794 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1795 info->flags |= DF_TEXTREL;
ec338859 1796 }
a85d7ed0
NC		 1797 }
1798 }
0451c93c
MS		 1799
1800 local_got = elf_local_got_refcounts (ibfd);
1801 if (!local_got)
1802 continue;
1803
0ffa91dd 1804 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1805 locsymcount = symtab_hdr->sh_info;
1806 end_local_got = local_got + locsymcount;
69fc87f1 1807 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1808 s = htab->elf.sgot;
1809 srela = htab->elf.srelgot;
69fc87f1 1810 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1811 {
0451c93c 1812 if (*local_got > 0)
a85d7ed0 1813 {
eea6121a
AM		 1814 *local_got = s->size;
1815 s->size += GOT_ENTRY_SIZE;
69fc87f1 1816 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1817 s->size += GOT_ENTRY_SIZE;
0e1862bb 1818 if (bfd_link_pic (info))
eea6121a 1819 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 1820 }
1821 else
0451c93c 1822 *local_got = (bfd_vma) -1;
a85d7ed0 1823 }
470b557a
AK		 1824
1825 local_plt = elf_s390_local_plt (ibfd);
1826 for (i = 0; i < symtab_hdr->sh_info; i++)
1827 {
1828 if (local_plt[i].plt.refcount > 0)
1829 {
1830 local_plt[i].plt.offset = htab->elf.iplt->size;
1831 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1832 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1833 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
1834 }
1835 else
1836 local_plt[i].plt.offset = (bfd_vma) -1;
1837 }
0451c93c
MS		 1838 }
1839
69fc87f1
MS		 1840 if (htab->tls_ldm_got.refcount > 0)
1841 {
1842 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1843 relocs. */
f41345a7
AK		 1844 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1845 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1846 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 1847 }
1848 else
1849 htab->tls_ldm_got.offset = -1;
1850
0451c93c
MS		 1851 /* Allocate global sym .plt and .got entries, and space for global
1852 sym dynamic relocs. */
2c3fc389 1853 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1854
1855 /* We now have determined the sizes of the various dynamic sections.
1856 Allocate memory for them. */
b34976b6 1857 relocs = FALSE;
0451c93c
MS		 1858 for (s = dynobj->sections; s != NULL; s = s->next)
1859 {
1860 if ((s->flags & SEC_LINKER_CREATED) == 0)
1861 continue;
1862
f41345a7
AK		 1863 if (s == htab->elf.splt
1864 || s == htab->elf.sgot
1865 || s == htab->elf.sgotplt
9d19e4fd 1866 || s == htab->elf.sdynbss
5474d94f 1867 || s == htab->elf.sdynrelro
470b557a
AK		 1868 || s == htab->elf.iplt
1869 || s == htab->elf.igotplt
1870 || s == htab->irelifunc)
0451c93c
MS		 1871 {
1872 /* Strip this section if we don't need it; see the
1873 comment below. */
1874 }
fd361982 1875 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
0451c93c 1876 {
f41345a7 1877 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 1878 relocs = TRUE;
ec338859 1879
0451c93c
MS		 1880 /* We use the reloc_count field as a counter if we need
1881 to copy relocs into the output file. */
1882 s->reloc_count = 0;
1883 }
1884 else
a85d7ed0
NC		 1885 {
1886 /* It's not one of our sections, so don't allocate space. */
1887 continue;
1888 }
1889
eea6121a 1890 if (s->size == 0)
a85d7ed0 1891 {
0451c93c
MS		 1892 /* If we don't need this section, strip it from the
1893 output file. This is to handle .rela.bss and
1894 .rela.plt. We must create it in
1895 create_dynamic_sections, because it must be created
1896 before the linker maps input sections to output
1897 sections. The linker does that before
1898 adjust_dynamic_symbol is called, and it is that
1899 function which decides whether anything needs to go
1900 into these sections. */
1901
8423293d 1902 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1903 continue;
1904 }
1905
c456f082
AM		 1906 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1907 continue;
1908
0451c93c
MS		 1909 /* Allocate memory for the section contents. We use bfd_zalloc
1910 here in case unused entries are not reclaimed before the
1911 section's contents are written out. This should not happen,
1912 but this way if it does, we get a R_390_NONE reloc instead
1913 of garbage. */
eea6121a 1914 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1915 if (s->contents == NULL)
b34976b6 1916 return FALSE;
a85d7ed0
NC		 1917 }
1918
3084d7a2 1919 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
a85d7ed0
NC		 1920}
1921
69fc87f1
MS		 1922/* Return the base VMA address which should be subtracted from real addresses
1923 when resolving @dtpoff relocation.
1924 This is PT_TLS segment p_vaddr. */
1925
1926static bfd_vma
2c3fc389 1927dtpoff_base (struct bfd_link_info *info)
69fc87f1 1928{
e1918d23
AM		 1929 /* If tls_sec is NULL, we should have signalled an error already. */
1930 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 1931 return 0;
e1918d23 1932 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 1933}
1934
1935/* Return the relocation value for @tpoff relocation
1936 if STT_TLS virtual address is ADDRESS. */
1937
1938static bfd_vma
2c3fc389 1939tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 1940{
e1918d23 1941 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 1942
e1918d23
AM		 1943 /* If tls_sec is NULL, we should have signalled an error already. */
1944 if (htab->tls_sec == NULL)
69fc87f1 1945 return 0;
e1918d23 1946 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 1947}
1948
1949/* Complain if TLS instruction relocation is against an invalid
1950 instruction. */
1951
1952static void
2c3fc389
NC		 1953invalid_tls_insn (bfd *input_bfd,
1954 asection *input_section,
1955 Elf_Internal_Rela *rel)
69fc87f1
MS		 1956{
1957 reloc_howto_type *howto;
1958
1959 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 1960 _bfd_error_handler
695344c0 1961 /* xgettext:c-format */
2dcf00ce 1962 (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
d003868e
AM		 1963 input_bfd,
1964 input_section,
2dcf00ce 1965 (uint64_t) rel->r_offset,
69fc87f1 1966 howto->name);
77df2968 1967 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 1968}
1969
a85d7ed0
NC		 1970/* Relocate a 390 ELF section. */
1971
b34976b6 1972static bfd_boolean
4dfe6ac6
NC		 1973elf_s390_relocate_section (bfd *output_bfd,
1974 struct bfd_link_info *info,
1975 bfd *input_bfd,
1976 asection *input_section,
1977 bfd_byte *contents,
1978 Elf_Internal_Rela *relocs,
1979 Elf_Internal_Sym *local_syms,
1980 asection **local_sections)
a85d7ed0 1981{
0451c93c 1982 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1983 Elf_Internal_Shdr *symtab_hdr;
1984 struct elf_link_hash_entry **sym_hashes;
1985 bfd_vma *local_got_offsets;
a85d7ed0
NC		 1986 Elf_Internal_Rela *rel;
1987 Elf_Internal_Rela *relend;
1988
7af5d5c4
AM		 1989 if (!is_s390_elf (input_bfd))
1990 {
1991 bfd_set_error (bfd_error_wrong_format);
1992 return FALSE;
1993 }
0ffa91dd 1994
0451c93c 1995 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1996 if (htab == NULL)
1997 return FALSE;
1998
0ffa91dd 1999 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2000 sym_hashes = elf_sym_hashes (input_bfd);
2001 local_got_offsets = elf_local_got_offsets (input_bfd);
2002
a85d7ed0
NC		 2003 rel = relocs;
2004 relend = relocs + input_section->reloc_count;
2005 for (; rel < relend; rel++)
2006 {
5236c819 2007 unsigned int r_type;
a85d7ed0
NC		 2008 reloc_howto_type *howto;
2009 unsigned long r_symndx;
2010 struct elf_link_hash_entry *h;
2011 Elf_Internal_Sym *sym;
2012 asection *sec;
0451c93c 2013 bfd_vma off;
a85d7ed0 2014 bfd_vma relocation;
b34976b6 2015 bfd_boolean unresolved_reloc;
a85d7ed0 2016 bfd_reloc_status_type r;
69fc87f1 2017 int tls_type;
b27bb18f 2018 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2019
2020 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2021 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2022 || r_type == (int) R_390_GNU_VTENTRY)
2023 continue;
5236c819 2024 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2025 {
2026 bfd_set_error (bfd_error_bad_value);
b34976b6 2027 return FALSE;
a85d7ed0 2028 }
a85d7ed0 2029
b491616a 2030 howto = elf_howto_table + r_type;
a85d7ed0 2031 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2032
a85d7ed0
NC		 2033 h = NULL;
2034 sym = NULL;
2035 sec = NULL;
b34976b6 2036 unresolved_reloc = FALSE;
a85d7ed0
NC		 2037 if (r_symndx < symtab_hdr->sh_info)
2038 {
2039 sym = local_syms + r_symndx;
2040 sec = local_sections[r_symndx];
470b557a
AK		 2041
2042 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2043 {
2044 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2045 if (local_plt == NULL)
2046 return FALSE;
2047
2048 /* Address of the PLT slot. */
2049 relocation = (htab->elf.iplt->output_section->vma
2050 + htab->elf.iplt->output_offset
2051 + local_plt[r_symndx].plt.offset);
2052
2053 switch (r_type)
2054 {
31db78f6
AK		 2055 case R_390_PLTOFF16:
2056 case R_390_PLTOFF32:
2057 case R_390_PLTOFF64:
afca762f 2058 relocation -= s390_got_pointer (info);
31db78f6 2059 break;
470b557a
AK		 2060 case R_390_GOTPLT12:
2061 case R_390_GOTPLT16:
2062 case R_390_GOTPLT20:
2063 case R_390_GOTPLT32:
2064 case R_390_GOTPLT64:
2065 case R_390_GOTPLTENT:
2066 case R_390_GOT12:
2067 case R_390_GOT16:
2068 case R_390_GOT20:
2069 case R_390_GOT32:
2070 case R_390_GOT64:
2071 case R_390_GOTENT:
2072 {
2073 /* Write the PLT slot address into the GOT slot. */
2074 bfd_put_64 (output_bfd, relocation,
2075 htab->elf.sgot->contents +
2076 local_got_offsets[r_symndx]);
2077 relocation = (local_got_offsets[r_symndx] +
afca762f 2078 s390_got_offset (info));
470b557a
AK		 2079
2080 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
afca762f 2081 relocation += s390_got_pointer (info);
470b557a
AK		 2082 break;
2083 }
2084 default:
2085 break;
2086 }
2087 /* The output section is needed later in
2088 finish_dynamic_section when creating the dynamic
2089 relocation. */
2090 local_plt[r_symndx].sec = sec;
2091 goto do_relocation;
2092 }
2093 else
2094 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2095 }
2096 else
2097 {
560e09e9 2098 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2099 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2100
b2a8e766
AM		 2101 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2102 r_symndx, symtab_hdr, sym_hashes,
2103 h, sec, relocation,
62d887d4 2104 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2105 }
2106
dbaa2011 2107 if (sec != NULL && discarded_section (sec))
e4067dbb 2108 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2109 rel, 1, relend, howto, 0, contents);
ab96bf03 2110
0e1862bb 2111 if (bfd_link_relocatable (info))
ab96bf03
AM		 2112 continue;
2113
b27bb18f
L		 2114 resolved_to_zero = (h != NULL
2115 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2116
a85d7ed0
NC		 2117 switch (r_type)
2118 {
5236c819
MS		 2119 case R_390_GOTPLT12:
2120 case R_390_GOTPLT16:
bd1ea41b 2121 case R_390_GOTPLT20:
5236c819
MS		 2122 case R_390_GOTPLT32:
2123 case R_390_GOTPLT64:
2124 case R_390_GOTPLTENT:
2125 /* There are three cases for a GOTPLT relocation. 1) The
2126 relocation is against the jump slot entry of a plt that
2127 will get emitted to the output file. 2) The relocation
2128 is against the jump slot of a plt entry that has been
2129 removed. elf_s390_adjust_gotplt has created a GOT entry
2130 as replacement. 3) The relocation is against a local symbol.
2131 Cases 2) and 3) are the same as the GOT relocation code
2132 so we just have to test for case 1 and fall through for
2133 the other two. */
2134 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2135 {
2136 bfd_vma plt_index;
2137
470b557a
AK		 2138 if (s390_is_ifunc_symbol_p (h))
2139 {
afca762f
AK		 2140 /* Entry indices of .iplt and .igot.plt match
2141 1:1. No magic PLT first entry here. */
470b557a 2142 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
afca762f
AK		 2143 relocation = (plt_index * GOT_ENTRY_SIZE
2144 + s390_gotplt_offset (info)
2145 + htab->elf.igotplt->output_offset);
470b557a
AK		 2146 }
2147 else
2148 {
afca762f
AK		 2149 plt_index = ((h->plt.offset - PLT_FIRST_ENTRY_SIZE)
2150 / PLT_ENTRY_SIZE);
2151
2152 relocation = (plt_index * GOT_ENTRY_SIZE
2153 + s390_gotplt_offset (info));
470b557a 2154 }
afca762f
AK		 2155 if (r_type == R_390_GOTPLTENT)
2156 relocation += s390_got_pointer (info);
5236c819 2157 unresolved_reloc = FALSE;
5236c819
MS		 2158 break;
2159 }
2160 /* Fall through. */
2161
947216bf
AM		 2162 case R_390_GOT12:
2163 case R_390_GOT16:
bd1ea41b 2164 case R_390_GOT20:
947216bf
AM		 2165 case R_390_GOT32:
2166 case R_390_GOT64:
2167 case R_390_GOTENT:
2168 /* Relocation is to the entry for this symbol in the global
2169 offset table. */
afca762f 2170 if (htab->elf.sgot == NULL)
0451c93c 2171 abort ();
a85d7ed0 2172
947216bf
AM		 2173 if (h != NULL)
2174 {
b34976b6 2175 bfd_boolean dyn;
a85d7ed0 2176
947216bf 2177 off = h->got.offset;
0451c93c 2178 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2179
2180 if (s390_is_ifunc_symbol_p (h))
2181 {
2182 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2183 if (off == (bfd_vma)-1)
2184 {
2185 /* No explicit GOT usage so redirect to the
2186 got.iplt slot. */
afca762f
AK		 2187 relocation = (s390_gotplt_offset (info)
2188 + htab->elf.igotplt->output_offset
2189 + (h->plt.offset / PLT_ENTRY_SIZE
2190 * GOT_ENTRY_SIZE));
2191
2192 /* For @GOTENT the relocation is against the offset between
2193 the instruction and the symbols entry in the GOT and not
2194 between the start of the GOT and the symbols entry. We
2195 add the vma of the GOT to get the correct value. */
2196 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2197 relocation += s390_got_pointer (info);
2198
2199 break;
470b557a
AK		 2200 }
2201 else
2202 {
2203 /* Explicit GOT slots must contain the address
2204 of the PLT slot. This will be handled in
2205 finish_dynamic_symbol. */
2206 }
2207 }
0e1862bb
L		 2208 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2209 bfd_link_pic (info),
2210 h)
2211 || (bfd_link_pic (info)
470b557a 2212 && SYMBOL_REFERENCES_LOCAL (info, h))
10e7c045 2213 || resolved_to_zero)
947216bf 2214 {
e6213e09
AK		 2215 Elf_Internal_Sym *isym;
2216 asection *sym_sec;
2217
947216bf
AM		 2218 /* This is actually a static link, or it is a
2219 -Bsymbolic link and the symbol is defined
2220 locally, or the symbol was forced to be local
2221 because of a version file. We must initialize
2222 this entry in the global offset table. Since the
2223 offset must always be a multiple of 2, we use the
2224 least significant bit to record whether we have
2225 initialized it already.
2226
2227 When doing a dynamic link, we create a .rel.got
2228 relocation entry to initialize the value. This
2229 is done in the finish_dynamic_symbol routine. */
2230 if ((off & 1) != 0)
2231 off &= ~1;
2232 else
2233 {
a85d7ed0 2234 bfd_put_64 (output_bfd, relocation,
afca762f 2235 htab->elf.sgot->contents + off);
947216bf
AM		 2236 h->got.offset |= 1;
2237 }
a63cc5f7 2238
e6213e09
AK		 2239 /* When turning a GOT slot dereference into a direct
2240 reference using larl we have to make sure that
2241 the symbol is 1. properly aligned and 2. it is no
2242 ABS symbol or will become one. */
a63cc5f7 2243 if ((h->def_regular
0e1862bb 2244 && bfd_link_pic (info)
a63cc5f7
AK		 2245 && SYMBOL_REFERENCES_LOCAL (info, h))
2246 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2247 && ((r_type == R_390_GOTENT
2248 && (bfd_get_16 (input_bfd,
2249 contents + rel->r_offset - 2)
2250 & 0xff0f) == 0xc408)
2251 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2252 || (r_type == R_390_GOT20
2253 && (bfd_get_32 (input_bfd,
2254 contents + rel->r_offset - 2)
2255 & 0xff00f000) == 0xe300c000
2256 && bfd_get_8 (input_bfd,
e6213e09 2257 contents + rel->r_offset + 3) == 0x04))
f1dfbfdb 2258 && (isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
e6213e09
AK		 2259 input_bfd, r_symndx))
2260 && isym->st_shndx != SHN_ABS
2261 && h != htab->elf.hdynamic
2262 && h != htab->elf.hgot
2263 && h != htab->elf.hplt
2264 && !(isym->st_value & 1)
2265 && (sym_sec = bfd_section_from_elf_index (input_bfd,
2266 isym->st_shndx))
2267 && sym_sec->alignment_power)
a63cc5f7
AK		 2268 {
2269 unsigned short new_insn =
2270 (0xc000 | (bfd_get_8 (input_bfd,
2271 contents + rel->r_offset - 1) & 0xf0));
2272 bfd_put_16 (output_bfd, new_insn,
2273 contents + rel->r_offset - 2);
2274 r_type = R_390_PC32DBL;
2275 rel->r_addend = 2;
2276 howto = elf_howto_table + r_type;
2277 relocation = h->root.u.def.value
2278 + h->root.u.def.section->output_section->vma
2279 + h->root.u.def.section->output_offset;
2280 goto do_relocation;
2281 }
947216bf 2282 }
0451c93c 2283 else
b34976b6 2284 unresolved_reloc = FALSE;
947216bf
AM		 2285 }
2286 else
2287 {
0451c93c
MS		 2288 if (local_got_offsets == NULL)
2289 abort ();
a85d7ed0 2290
947216bf 2291 off = local_got_offsets[r_symndx];
a85d7ed0 2292
947216bf
AM		 2293 /* The offset must always be a multiple of 8. We use
2294 the least significant bit to record whether we have
2295 already generated the necessary reloc. */
2296 if ((off & 1) != 0)
2297 off &= ~1;
2298 else
2299 {
2300 bfd_put_64 (output_bfd, relocation,
f41345a7 2301 htab->elf.sgot->contents + off);
a85d7ed0 2302
0e1862bb 2303 if (bfd_link_pic (info))
947216bf
AM		 2304 {
2305 asection *s;
2306 Elf_Internal_Rela outrel;
2307 bfd_byte *loc;
a85d7ed0 2308
f41345a7 2309 s = htab->elf.srelgot;
947216bf 2310 if (s == NULL)
0451c93c 2311 abort ();
a85d7ed0 2312
f41345a7
AK		 2313 outrel.r_offset = (htab->elf.sgot->output_section->vma
2314 + htab->elf.sgot->output_offset
947216bf
AM		 2315 + off);
2316 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2317 outrel.r_addend = relocation;
947216bf
AM		 2318 loc = s->contents;
2319 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2320 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2321 }
a85d7ed0 2322
947216bf
AM		 2323 local_got_offsets[r_symndx] |= 1;
2324 }
2325 }
a85d7ed0 2326
0451c93c
MS		 2327 if (off >= (bfd_vma) -2)
2328 abort ();
2329
afca762f 2330 relocation = s390_got_offset (info) + off;
0451c93c 2331
ae9a127f
NC		 2332 /* For @GOTENT the relocation is against the offset between
2333 the instruction and the symbols entry in the GOT and not
2334 between the start of the GOT and the symbols entry. We
2335 add the vma of the GOT to get the correct value. */
5236c819
MS		 2336 if ( r_type == R_390_GOTENT
2337 || r_type == R_390_GOTPLTENT)
afca762f 2338 relocation += s390_got_pointer (info);
a85d7ed0 2339
947216bf 2340 break;
99c79b2e 2341
5236c819
MS		 2342 case R_390_GOTOFF16:
2343 case R_390_GOTOFF32:
2344 case R_390_GOTOFF64:
947216bf
AM		 2345 /* Relocation is relative to the start of the global offset
2346 table. */
a85d7ed0 2347
d47b13e0
AK		 2348 if (h != NULL
2349 && s390_is_ifunc_symbol_p (h)
2350 && h->def_regular
2351 && !bfd_link_executable (info))
2352 {
2353 relocation = (htab->elf.iplt->output_section->vma
2354 + htab->elf.iplt->output_offset
2355 + h->plt.offset
afca762f 2356 - s390_got_pointer (info));
d47b13e0
AK		 2357 goto do_relocation;
2358 }
2359
afca762f 2360 relocation -= s390_got_pointer (info);
947216bf 2361 break;
a85d7ed0 2362
947216bf 2363 case R_390_GOTPC:
a85d7ed0 2364 case R_390_GOTPCDBL:
947216bf 2365 /* Use global offset table as symbol value. */
afca762f 2366 relocation = s390_got_pointer (info);
b34976b6 2367 unresolved_reloc = FALSE;
947216bf 2368 break;
a85d7ed0 2369
fb798c50 2370 case R_390_PLT12DBL:
947216bf 2371 case R_390_PLT16DBL:
fb798c50 2372 case R_390_PLT24DBL:
947216bf
AM		 2373 case R_390_PLT32:
2374 case R_390_PLT32DBL:
2375 case R_390_PLT64:
2376 /* Relocation is to the entry for this symbol in the
2377 procedure linkage table. */
a85d7ed0 2378
947216bf
AM		 2379 /* Resolve a PLT32 reloc against a local symbol directly,
2380 without using the procedure linkage table. */
2381 if (h == NULL)
2382 break;
a85d7ed0 2383
947216bf 2384 if (h->plt.offset == (bfd_vma) -1
31db78f6 2385 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2386 {
2387 /* We didn't make a PLT entry for this symbol. This
2388 happens when statically linking PIC code, or when
2389 using -Bsymbolic. */
2390 break;
2391 }
470b557a
AK		 2392 if (s390_is_ifunc_symbol_p (h))
2393 relocation = (htab->elf.iplt->output_section->vma
2394 + htab->elf.iplt->output_offset
2395 + h->plt.offset);
2396 else
2397 relocation = (htab->elf.splt->output_section->vma
2398 + htab->elf.splt->output_offset
2399 + h->plt.offset);
b34976b6 2400 unresolved_reloc = FALSE;
26e41594 2401 break;
5236c819
MS		 2402
2403 case R_390_PLTOFF16:
2404 case R_390_PLTOFF32:
2405 case R_390_PLTOFF64:
26e41594
AM		 2406 /* Relocation is to the entry for this symbol in the
2407 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2408
2409 /* For local symbols or if we didn't make a PLT entry for
2410 this symbol resolve the symbol directly. */
31db78f6 2411 if (h == NULL
5236c819 2412 || h->plt.offset == (bfd_vma) -1
31db78f6 2413 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2414 {
afca762f 2415 relocation -= s390_got_pointer (info);
5236c819
MS		 2416 break;
2417 }
2418
470b557a
AK		 2419 if (s390_is_ifunc_symbol_p (h))
2420 relocation = (htab->elf.iplt->output_section->vma
2421 + htab->elf.iplt->output_offset
2422 + h->plt.offset
afca762f 2423 - s390_got_pointer (info));
470b557a
AK		 2424 else
2425 relocation = (htab->elf.splt->output_section->vma
2426 + htab->elf.splt->output_offset
2427 + h->plt.offset
afca762f 2428 - s390_got_pointer (info));
5236c819 2429 unresolved_reloc = FALSE;
947216bf
AM		 2430 break;
2431
947216bf 2432 case R_390_PC16:
fb798c50 2433 case R_390_PC12DBL:
947216bf 2434 case R_390_PC16DBL:
fb798c50 2435 case R_390_PC24DBL:
947216bf 2436 case R_390_PC32:
a85d7ed0 2437 case R_390_PC32DBL:
947216bf 2438 case R_390_PC64:
431e5de3
AK		 2439 if (h != NULL
2440 && bfd_link_pie (info)
2441 && !h->def_regular)
2442 {
871b3ab2 2443 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
431e5de3
AK		 2444 "in shared library and accessed "
2445 "from executable "
2446 "(rebuild file with -fPIC ?)"),
2447 input_bfd, h->root.root.string);
2448 bfd_set_error (bfd_error_bad_value);
2449 return FALSE;
2450 }
99ba5125
AK		 2451 /* The target of these relocs are instruction operands
2452 residing in read-only sections. We cannot emit a runtime
2453 reloc for it. */
2454 if (h != NULL
2455 && s390_is_ifunc_symbol_p (h)
2456 && h->def_regular
2457 && bfd_link_pic (info))
2458 {
2459 relocation = (htab->elf.iplt->output_section->vma
2460 + htab->elf.iplt->output_offset
2461 + h->plt.offset);
2462 goto do_relocation;
2463 }
1a0670f3 2464 /* Fall through. */
99ba5125
AK		 2465
2466 case R_390_8:
2467 case R_390_16:
2468 case R_390_32:
2469 case R_390_64:
470b557a 2470
f657f8c4
NC		 2471 if ((input_section->flags & SEC_ALLOC) == 0)
2472 break;
2473
470b557a
AK		 2474 if (h != NULL
2475 && s390_is_ifunc_symbol_p (h)
2476 && h->def_regular)
2477 {
d7ab4911 2478 if (!bfd_link_pic (info))
470b557a 2479 {
d7ab4911
AK		 2480 /* For a non-shared object the symbol will not
2481 change. Hence we can write the address of the
2482 target IPLT slot now. */
470b557a
AK		 2483 relocation = (htab->elf.iplt->output_section->vma
2484 + htab->elf.iplt->output_offset
2485 + h ->plt.offset);
2486 goto do_relocation;
2487 }
2488 else
2489 {
2490 /* For shared objects a runtime relocation is needed. */
2491
2492 Elf_Internal_Rela outrel;
2493 asection *sreloc;
2494
2495 /* Need a dynamic relocation to get the real function
2496 address. */
2497 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2498 info,
2499 input_section,
2500 rel->r_offset);
2501 if (outrel.r_offset == (bfd_vma) -1
2502 || outrel.r_offset == (bfd_vma) -2)
2503 abort ();
2504
2505 outrel.r_offset += (input_section->output_section->vma
2506 + input_section->output_offset);
2507
2508 if (h->dynindx == -1
2509 || h->forced_local
0e1862bb 2510 || bfd_link_executable (info))
470b557a
AK		 2511 {
2512 /* This symbol is resolved locally. */
2513 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2514 outrel.r_addend = (h->root.u.def.value
2515 + h->root.u.def.section->output_section->vma
2516 + h->root.u.def.section->output_offset);
2517 }
2518 else
2519 {
2520 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2521 outrel.r_addend = 0;
2522 }
2523
2524 sreloc = htab->elf.irelifunc;
2525 elf_append_rela (output_bfd, sreloc, &outrel);
2526
2527 /* If this reloc is against an external symbol, we
2528 do not want to fiddle with the addend. Otherwise,
2529 we need to include the symbol value so that it
2530 becomes an addend for the dynamic reloc. For an
2531 internal symbol, we have updated addend. */
2532 continue;
2533 }
2534 }
2535
0e1862bb 2536 if ((bfd_link_pic (info)
82058a73 2537 && (h == NULL
b27bb18f
L		 2538 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2539 && !resolved_to_zero)
82058a73 2540 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2541 && ((r_type != R_390_PC16
fb798c50 2542 && r_type != R_390_PC12DBL
0451c93c 2543 && r_type != R_390_PC16DBL
fb798c50 2544 && r_type != R_390_PC24DBL
0451c93c
MS		 2545 && r_type != R_390_PC32
2546 && r_type != R_390_PC32DBL
2547 && r_type != R_390_PC64)
8c21ca21 2548 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2549 || (ELIMINATE_COPY_RELOCS
0e1862bb 2550 && !bfd_link_pic (info)
0451c93c
MS		 2551 && h != NULL
2552 && h->dynindx != -1
f5385ebf
AM		 2553 && !h->non_got_ref
2554 && ((h->def_dynamic
2555 && !h->def_regular)
0451c93c
MS		 2556 || h->root.type == bfd_link_hash_undefweak
2557 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2558 {
2559 Elf_Internal_Rela outrel;
b34976b6 2560 bfd_boolean skip, relocate;
0451c93c 2561 asection *sreloc;
947216bf 2562 bfd_byte *loc;
a85d7ed0 2563
947216bf
AM		 2564 /* When generating a shared object, these relocations
2565 are copied into the output file to be resolved at run
2566 time. */
b34976b6
AM		 2567 skip = FALSE;
2568 relocate = FALSE;
a85d7ed0 2569
c629eae0
JJ		 2570 outrel.r_offset =
2571 _bfd_elf_section_offset (output_bfd, info, input_section,
2572 rel->r_offset);
2573 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2574 skip = TRUE;
0bb2d96a 2575 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2576 skip = TRUE, relocate = TRUE;
a85d7ed0 2577
947216bf
AM		 2578 outrel.r_offset += (input_section->output_section->vma
2579 + input_section->output_offset);
a85d7ed0 2580
947216bf 2581 if (skip)
0bb2d96a 2582 memset (&outrel, 0, sizeof outrel);
947216bf 2583 else if (h != NULL
0451c93c
MS		 2584 && h->dynindx != -1
2585 && (r_type == R_390_PC16
fb798c50 2586 || r_type == R_390_PC12DBL
0451c93c 2587 || r_type == R_390_PC16DBL
fb798c50 2588 || r_type == R_390_PC24DBL
0451c93c
MS		 2589 || r_type == R_390_PC32
2590 || r_type == R_390_PC32DBL
2591 || r_type == R_390_PC64
0e1862bb 2592 || !bfd_link_pic (info)
8c21ca21 2593 || !SYMBOLIC_BIND (info, h)
f5385ebf 2594 || !h->def_regular))
947216bf
AM		 2595 {
2596 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2597 outrel.r_addend = rel->r_addend;
947216bf
AM		 2598 }
2599 else
2600 {
0451c93c 2601 /* This symbol is local, or marked to become local. */
90ced0dd 2602 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2603 if (r_type == R_390_64)
2604 {
2605 relocate = TRUE;
2606 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2607 }
2608 else
2609 {
2610 long sindx;
2611
90ced0dd 2612 if (bfd_is_abs_section (sec))
b5727d75
MS		 2613 sindx = 0;
2614 else if (sec == NULL || sec->owner == NULL)
2615 {
2616 bfd_set_error(bfd_error_bad_value);
2617 return FALSE;
2618 }
2619 else
2620 {
2621 asection *osec;
2622
2623 osec = sec->output_section;
2624 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2625
2626 if (sindx == 0)
2627 {
2628 osec = htab->elf.text_index_section;
2629 sindx = elf_section_data (osec)->dynindx;
2630 }
2631 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2632
2633 /* We are turning this relocation into one
2634 against a section symbol, so subtract out
2635 the output section's address but not the
2636 offset of the input section in the output
2637 section. */
90ced0dd 2638 outrel.r_addend -= osec->vma;
b5727d75
MS		 2639 }
2640 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2641 }
0451c93c 2642 }
a85d7ed0 2643
0451c93c
MS		 2644 sreloc = elf_section_data (input_section)->sreloc;
2645 if (sreloc == NULL)
2646 abort ();
2647
947216bf
AM		 2648 loc = sreloc->contents;
2649 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2650 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2651
947216bf
AM		 2652 /* If this reloc is against an external symbol, we do
2653 not want to fiddle with the addend. Otherwise, we
2654 need to include the symbol value so that it becomes
2655 an addend for the dynamic reloc. */
2656 if (! relocate)
2657 continue;
2658 }
a85d7ed0 2659
947216bf 2660 break;
a85d7ed0 2661
69fc87f1
MS		 2662 /* Relocations for tls literal pool entries. */
2663 case R_390_TLS_IE64:
0e1862bb 2664 if (bfd_link_pic (info))
69fc87f1
MS		 2665 {
2666 Elf_Internal_Rela outrel;
2667 asection *sreloc;
2668 bfd_byte *loc;
2669
2670 outrel.r_offset = rel->r_offset
2671 + input_section->output_section->vma
2672 + input_section->output_offset;
2673 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2674 sreloc = elf_section_data (input_section)->sreloc;
2675 if (sreloc == NULL)
2676 abort ();
2677 loc = sreloc->contents;
2678 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2679 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2680 }
ae9a127f 2681 /* Fall through. */
69fc87f1
MS		 2682
2683 case R_390_TLS_GD64:
2684 case R_390_TLS_GOTIE64:
2685 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2686 tls_type = GOT_UNKNOWN;
2687 if (h == NULL && local_got_offsets)
2688 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2689 else if (h != NULL)
2690 {
2691 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2692 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2693 r_type = R_390_TLS_LE64;
2694 }
2695 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2696 r_type = R_390_TLS_IE64;
2697
2698 if (r_type == R_390_TLS_LE64)
2699 {
2700 /* This relocation gets optimized away by the local exec
2701 access optimization. */
2702 BFD_ASSERT (! unresolved_reloc);
2703 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2704 contents + rel->r_offset);
2705 continue;
2706 }
2707
f41345a7 2708 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2709 abort ();
2710
2711 if (h != NULL)
2712 off = h->got.offset;
2713 else
2714 {
2715 if (local_got_offsets == NULL)
2716 abort ();
2717
2718 off = local_got_offsets[r_symndx];
2719 }
2720
2721 emit_tls_relocs:
2722
2723 if ((off & 1) != 0)
2724 off &= ~1;
26e41594 2725 else
69fc87f1
MS		 2726 {
2727 Elf_Internal_Rela outrel;
2728 bfd_byte *loc;
2729 int dr_type, indx;
2730
f41345a7 2731 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2732 abort ();
2733
f41345a7
AK		 2734 outrel.r_offset = (htab->elf.sgot->output_section->vma
2735 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2736
2737 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2738 if (r_type == R_390_TLS_GD64)
2739 dr_type = R_390_TLS_DTPMOD;
2740 else
2741 dr_type = R_390_TLS_TPOFF;
2742 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2743 outrel.r_addend = relocation - dtpoff_base (info);
2744 else
2745 outrel.r_addend = 0;
2746 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2747 loc = htab->elf.srelgot->contents;
2748 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2749 * sizeof (Elf64_External_Rela);
2750 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2751
2752 if (r_type == R_390_TLS_GD64)
2753 {
2754 if (indx == 0)
2755 {
07d6d2b8 2756 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2757 bfd_put_64 (output_bfd,
2758 relocation - dtpoff_base (info),
f41345a7 2759 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2760 }
2761 else
2762 {
2763 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2764 outrel.r_offset += GOT_ENTRY_SIZE;
2765 outrel.r_addend = 0;
f41345a7 2766 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2767 loc += sizeof (Elf64_External_Rela);
2768 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2769 }
2770 }
2771
2772 if (h != NULL)
2773 h->got.offset |= 1;
2774 else
2775 local_got_offsets[r_symndx] |= 1;
2776 }
2777
2778 if (off >= (bfd_vma) -2)
2779 abort ();
2780 if (r_type == ELF64_R_TYPE (rel->r_info))
2781 {
f41345a7 2782 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2783 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2784 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2785 unresolved_reloc = FALSE;
2786 }
2787 else
2788 {
f41345a7 2789 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2790 contents + rel->r_offset);
2791 continue;
2792 }
2793 break;
2794
2795 case R_390_TLS_GOTIE12:
bd1ea41b 2796 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2797 case R_390_TLS_IEENT:
2798 if (h == NULL)
2799 {
2800 if (local_got_offsets == NULL)
2801 abort();
2802 off = local_got_offsets[r_symndx];
0e1862bb 2803 if (bfd_link_pic (info))
69fc87f1
MS		 2804 goto emit_tls_relocs;
2805 }
2806 else
2807 {
2808 off = h->got.offset;
2809 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2810 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2811 goto emit_tls_relocs;
2812 }
2813
f41345a7 2814 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2815 abort ();
2816
2817 BFD_ASSERT (! unresolved_reloc);
2818 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2819 htab->elf.sgot->contents + off);
2820 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2821 if (r_type == R_390_TLS_IEENT)
f41345a7 2822 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2823 unresolved_reloc = FALSE;
2824 break;
2825
2826 case R_390_TLS_LDM64:
0e1862bb 2827 if (! bfd_link_pic (info))
69fc87f1
MS		 2828 /* The literal pool entry this relocation refers to gets ignored
2829 by the optimized code of the local exec model. Do nothing
2830 and the value will turn out zero. */
2831 continue;
2832
f41345a7 2833 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2834 abort ();
2835
2836 off = htab->tls_ldm_got.offset;
2837 if (off & 1)
2838 off &= ~1;
2839 else
2840 {
2841 Elf_Internal_Rela outrel;
2842 bfd_byte *loc;
2843
f41345a7 2844 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2845 abort ();
2846
f41345a7
AK		 2847 outrel.r_offset = (htab->elf.sgot->output_section->vma
2848 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2849
2850 bfd_put_64 (output_bfd, 0,
f41345a7 2851 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2852 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2853 outrel.r_addend = 0;
f41345a7
AK		 2854 loc = htab->elf.srelgot->contents;
2855 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2856 * sizeof (Elf64_External_Rela);
2857 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2858 htab->tls_ldm_got.offset |= 1;
2859 }
f41345a7 2860 relocation = htab->elf.sgot->output_offset + off;
26e41594 2861 unresolved_reloc = FALSE;
69fc87f1
MS		 2862 break;
2863
2864 case R_390_TLS_LE64:
3cbc1e5e 2865 if (bfd_link_dll (info))
69fc87f1
MS		 2866 {
2867 /* Linking a shared library with non-fpic code requires
2868 a R_390_TLS_TPOFF relocation. */
2869 Elf_Internal_Rela outrel;
2870 asection *sreloc;
2871 bfd_byte *loc;
2872 int indx;
2873
2874 outrel.r_offset = rel->r_offset
2875 + input_section->output_section->vma
2876 + input_section->output_offset;
2877 if (h != NULL && h->dynindx != -1)
2878 indx = h->dynindx;
2879 else
2880 indx = 0;
2881 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2882 if (indx == 0)
2883 outrel.r_addend = relocation - dtpoff_base (info);
2884 else
2885 outrel.r_addend = 0;
2886 sreloc = elf_section_data (input_section)->sreloc;
2887 if (sreloc == NULL)
2888 abort ();
2889 loc = sreloc->contents;
2890 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2891 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2892 }
2893 else
2894 {
2895 BFD_ASSERT (! unresolved_reloc);
2896 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2897 contents + rel->r_offset);
2898 }
2899 continue;
2900
2901 case R_390_TLS_LDO64:
0e1862bb 2902 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 2903 relocation -= dtpoff_base (info);
2904 else
2905 /* When converting LDO to LE, we must negate. */
2906 relocation = -tpoff (info, relocation);
2907 break;
2908
2909 /* Relocations for tls instructions. */
2910 case R_390_TLS_LOAD:
2911 case R_390_TLS_GDCALL:
2912 case R_390_TLS_LDCALL:
2913 tls_type = GOT_UNKNOWN;
2914 if (h == NULL && local_got_offsets)
2915 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2916 else if (h != NULL)
2917 tls_type = elf_s390_hash_entry(h)->tls_type;
2918
2919 if (tls_type == GOT_TLS_GD)
2920 continue;
2921
2922 if (r_type == R_390_TLS_LOAD)
2923 {
0e1862bb 2924 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 2925 {
2926 /* IE->LE transition. Four valid cases:
2927 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2928 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2929 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2930 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2931 unsigned int insn0, insn1, ry;
2932
2933 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2934 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2935 if (insn1 != 0x0004)
3704e358
AK		 2936 {
2937 invalid_tls_insn (input_bfd, input_section, rel);
2938 return FALSE;
2939 }
69fc87f1
MS		 2940 if ((insn0 & 0xff00f000) == 0xe3000000)
2941 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2942 ry = (insn0 & 0x000f0000);
2943 else if ((insn0 & 0xff0f0000) == 0xe3000000)
2944 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2945 ry = (insn0 & 0x0000f000) << 4;
2946 else if ((insn0 & 0xff00f000) == 0xe300c000)
2947 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2948 ry = (insn0 & 0x000f0000);
2949 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
2950 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2951 ry = (insn0 & 0x0000f000) << 4;
2952 else
3704e358
AK		 2953 {
2954 invalid_tls_insn (input_bfd, input_section, rel);
2955 return FALSE;
2956 }
69fc87f1
MS		 2957 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
2958 insn1 = 0x000d;
2959 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2960 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2961 }
2962 }
2963 else if (r_type == R_390_TLS_GDCALL)
2964 {
2965 unsigned int insn0, insn1;
2966
2967 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2968 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2969 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 2970 {
2971 invalid_tls_insn (input_bfd, input_section, rel);
2972 return FALSE;
2973 }
0e1862bb 2974 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 2975 {
2976 /* GD->LE transition.
2977 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2978 insn0 = 0xc0040000;
2979 insn1 = 0x0000;
2980 }
2981 else
2982 {
2983 /* GD->IE transition.
2984 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2985 insn0 = 0xe322c000;
2986 insn1 = 0x0004;
2987 }
2988 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2989 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2990 }
2991 else if (r_type == R_390_TLS_LDCALL)
2992 {
0e1862bb 2993 if (!bfd_link_pic (info))
69fc87f1
MS		 2994 {
2995 unsigned int insn0, insn1;
2996
2997 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2998 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2999 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3000 {
3001 invalid_tls_insn (input_bfd, input_section, rel);
3002 return FALSE;
3003 }
69fc87f1
MS		 3004 /* LD->LE transition.
3005 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3006 insn0 = 0xc0040000;
3007 insn1 = 0x0000;
3008 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3009 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3010 }
3011 }
3012 continue;
3013
947216bf
AM		 3014 default:
3015 break;
3016 }
a85d7ed0 3017
239e1f3a
AM		 3018 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3019 because such sections are not SEC_ALLOC and thus ld.so will
3020 not process them. */
0451c93c 3021 if (unresolved_reloc
239e1f3a 3022 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3023 && h->def_dynamic)
3024 && _bfd_elf_section_offset (output_bfd, info, input_section,
3025 rel->r_offset) != (bfd_vma) -1)
4eca0228 3026 _bfd_error_handler
695344c0 3027 /* xgettext:c-format */
2dcf00ce
AM		 3028 (_("%pB(%pA+%#" PRIx64 "): "
3029 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3030 input_bfd,
3031 input_section,
2dcf00ce 3032 (uint64_t) rel->r_offset,
843fe662 3033 howto->name,
0451c93c
MS		 3034 h->root.root.string);
3035
470b557a
AK		 3036 do_relocation:
3037
fb798c50
AK		 3038 /* When applying a 24 bit reloc we need to start one byte
3039 earlier. Otherwise the 32 bit get/put bfd operations might
3040 access a byte after the actual section. */
3041 if (r_type == R_390_PC24DBL
3042 || r_type == R_390_PLT24DBL)
3043 rel->r_offset--;
3044
bd1ea41b
MS		 3045 if (r_type == R_390_20
3046 || r_type == R_390_GOT20
3047 || r_type == R_390_GOTPLT20
3048 || r_type == R_390_TLS_GOTIE20)
3049 {
3050 relocation += rel->r_addend;
3051 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3052 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3053 contents, rel->r_offset,
3054 relocation, 0);
3055 }
3056 else
3057 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3058 contents, rel->r_offset,
3059 relocation, rel->r_addend);
3060
3061 if (r != bfd_reloc_ok)
3062 {
0451c93c 3063 const char *name;
ec338859 3064
0451c93c
MS		 3065 if (h != NULL)
3066 name = h->root.root.string;
3067 else
a85d7ed0 3068 {
0451c93c
MS		 3069 name = bfd_elf_string_from_elf_section (input_bfd,
3070 symtab_hdr->sh_link,
3071 sym->st_name);
3072 if (name == NULL)
b34976b6 3073 return FALSE;
0451c93c 3074 if (*name == '\0')
fd361982 3075 name = bfd_section_name (sec);
0451c93c 3076 }
ec338859 3077
0451c93c 3078 if (r == bfd_reloc_overflow)
1a72702b
AM		 3079 (*info->callbacks->reloc_overflow)
3080 (info, (h ? &h->root : NULL), name, howto->name,
3081 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3082 else
3083 {
4eca0228 3084 _bfd_error_handler
695344c0 3085 /* xgettext:c-format */
2dcf00ce 3086 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3087 input_bfd, input_section,
2dcf00ce 3088 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3089 return FALSE;
a85d7ed0
NC		 3090 }
3091 }
3092 }
3093
b34976b6 3094 return TRUE;
a85d7ed0
NC		 3095}
3096
470b557a
AK		 3097/* Generate the PLT slots together with the dynamic relocations needed
3098 for IFUNC symbols. */
3099
3100static void
3101elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3102 struct bfd_link_info *info,
3103 struct elf_link_hash_entry *h,
3104 struct elf_s390_link_hash_table *htab,
3105 bfd_vma plt_offset,
3106 bfd_vma resolver_address)
3107{
3108 bfd_vma plt_index;
3109 bfd_vma got_offset;
3110 Elf_Internal_Rela rela;
3111 bfd_byte *loc;
3112 asection *plt, *gotplt, *relplt;
3113
3114 if (htab->elf.iplt == NULL
3115 || htab->elf.igotplt == NULL
3116 || htab->elf.irelplt == NULL)
3117 abort ();
3118
3119 /* Index of the PLT slot within iplt section. */
3120 plt_index = plt_offset / PLT_ENTRY_SIZE;
3121 plt = htab->elf.iplt;
3122 /* Offset into the igot.plt section. */
3123 got_offset = plt_index * GOT_ENTRY_SIZE;
3124 gotplt = htab->elf.igotplt;
3125 relplt = htab->elf.irelplt;
3126
3127 /* Fill in the blueprint of a PLT. */
3128 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3129 PLT_ENTRY_SIZE);
3130
3131 /* Fixup the relative address to the GOT entry */
3132 bfd_put_32 (output_bfd,
3133 (gotplt->output_section->vma +
3134 gotplt->output_offset + got_offset
3135 - (plt->output_section->vma +
3136 plt->output_offset +
3137 plt_offset))/2,
3138 plt->contents + plt_offset + 2);
3139 /* Fixup the relative branch to PLT 0 */
3140 bfd_put_32 (output_bfd, - (plt->output_offset +
3141 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3142 plt->contents + plt_offset + 24);
3143 /* Fixup offset into .rela.plt section. */
3144 bfd_put_32 (output_bfd, relplt->output_offset +
3145 plt_index * sizeof (Elf64_External_Rela),
3146 plt->contents + plt_offset + 28);
3147
3148 /* Fill in the entry in the global offset table.
3149 Points to instruction after GOT offset. */
3150 bfd_put_64 (output_bfd,
3151 (plt->output_section->vma
3152 + plt->output_offset
3153 + plt_offset
3154 + 14),
3155 gotplt->contents + got_offset);
3156
3157 /* Fill in the entry in the .rela.plt section. */
3158 rela.r_offset = (gotplt->output_section->vma
3159 + gotplt->output_offset
3160 + got_offset);
3161
3162 if (!h
3163 || h->dynindx == -1
0e1862bb 3164 || ((bfd_link_executable (info)
470b557a
AK		 3165 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3166 && h->def_regular))
3167 {
3168 /* The symbol can be locally resolved. */
3169 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3170 rela.r_addend = resolver_address;
3171 }
3172 else
3173 {
3174 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3175 rela.r_addend = 0;
3176 }
3177
3178 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3179 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3180}
3181
3182
a85d7ed0
NC		 3183/* Finish up dynamic symbol handling. We set the contents of various
3184 dynamic sections here. */
3185
b34976b6 3186static bfd_boolean
4dfe6ac6
NC		 3187elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3188 struct bfd_link_info *info,
3189 struct elf_link_hash_entry *h,
3190 Elf_Internal_Sym *sym)
a85d7ed0 3191{
0451c93c 3192 struct elf_s390_link_hash_table *htab;
470b557a 3193 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3194
0451c93c 3195 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3196 if (htab == NULL)
3197 return FALSE;
a85d7ed0
NC		 3198
3199 if (h->plt.offset != (bfd_vma) -1)
3200 {
a85d7ed0 3201 bfd_vma plt_index;
afca762f 3202 bfd_vma gotplt_offset;
0451c93c 3203 Elf_Internal_Rela rela;
947216bf 3204 bfd_byte *loc;
a85d7ed0
NC		 3205
3206 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3207 it up. */
0a511368 3208 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3209 {
0a511368
AK		 3210 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3211 htab, h->plt.offset,
3212 eh->ifunc_resolver_address +
3213 eh->ifunc_resolver_section->output_offset +
3214 eh->ifunc_resolver_section->output_section->vma);
3215
3216 /* Do not return yet. Handling of explicit GOT slots of
3217 IFUNC symbols is below. */
470b557a
AK		 3218 }
3219 else
3220 {
3221 if (h->dynindx == -1
3222 || htab->elf.splt == NULL
3223 || htab->elf.sgotplt == NULL
3224 || htab->elf.srelplt == NULL)
3225 abort ();
a85d7ed0 3226
470b557a
AK		 3227 /* Calc. index no.
3228 Current offset - size first entry / entry size. */
3229 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3230
afca762f
AK		 3231 /* The slots in the .got.plt correspond to the PLT slots in
3232 the same order. */
3233 gotplt_offset = plt_index * GOT_ENTRY_SIZE;
3234
3235 /* If .got.plt comes first it needs to contain the 3 header
3236 entries. */
3237 if (!s390_gotplt_after_got_p (info))
3238 gotplt_offset += 3 * GOT_ENTRY_SIZE;
a85d7ed0 3239
470b557a
AK		 3240 /* Fill in the blueprint of a PLT. */
3241 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3242 PLT_ENTRY_SIZE);
3243
afca762f
AK		 3244 /* The first instruction in the PLT entry is a LARL loading
3245 the address of the GOT slot. We write the 4 byte
3246 immediate operand of the LARL instruction here. */
470b557a
AK		 3247 bfd_put_32 (output_bfd,
3248 (htab->elf.sgotplt->output_section->vma +
afca762f 3249 htab->elf.sgotplt->output_offset + gotplt_offset
470b557a
AK		 3250 - (htab->elf.splt->output_section->vma +
3251 htab->elf.splt->output_offset +
3252 h->plt.offset))/2,
3253 htab->elf.splt->contents + h->plt.offset + 2);
3254 /* Fixup the relative branch to PLT 0 */
3255 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3256 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3257 htab->elf.splt->contents + h->plt.offset + 24);
3258 /* Fixup offset into .rela.plt section. */
3259 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3260 htab->elf.splt->contents + h->plt.offset + 28);
3261
3262 /* Fill in the entry in the global offset table.
3263 Points to instruction after GOT offset. */
3264 bfd_put_64 (output_bfd,
3265 (htab->elf.splt->output_section->vma
3266 + htab->elf.splt->output_offset
3267 + h->plt.offset
3268 + 14),
afca762f 3269 htab->elf.sgotplt->contents + gotplt_offset);
470b557a
AK		 3270
3271 /* Fill in the entry in the .rela.plt section. */
3272 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3273 + htab->elf.sgotplt->output_offset
afca762f 3274 + gotplt_offset);
470b557a
AK		 3275 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3276 rela.r_addend = 0;
3277 loc = htab->elf.srelplt->contents + plt_index *
3278 sizeof (Elf64_External_Rela);
3279 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3280
3281 if (!h->def_regular)
3282 {
3283 /* Mark the symbol as undefined, rather than as defined in
3284 the .plt section. Leave the value alone. This is a clue
3285 for the dynamic linker, to make function pointer
3286 comparisons work between an application and shared
3287 library. */
3288 sym->st_shndx = SHN_UNDEF;
3289 }
a85d7ed0
NC		 3290 }
3291 }
3292
69fc87f1
MS		 3293 if (h->got.offset != (bfd_vma) -1
3294 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3295 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3296 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3297 {
a85d7ed0 3298 Elf_Internal_Rela rela;
947216bf 3299 bfd_byte *loc;
a85d7ed0
NC		 3300
3301 /* This symbol has an entry in the global offset table. Set it
947216bf 3302 up. */
f41345a7 3303 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3304 abort ();
a85d7ed0 3305
f41345a7
AK		 3306 rela.r_offset = (htab->elf.sgot->output_section->vma
3307 + htab->elf.sgot->output_offset
dc810e39 3308 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3309
470b557a
AK		 3310 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3311 {
0e1862bb 3312 if (bfd_link_pic (info))
470b557a
AK		 3313 {
3314 /* An explicit GOT slot usage needs GLOB_DAT. If the
3315 symbol references local the implicit got.iplt slot
3316 will be used and the IRELATIVE reloc has been created
3317 above. */
3318 goto do_glob_dat;
3319 }
3320 else
3321 {
3322 /* For non-shared objects explicit GOT slots must be
3323 filled with the PLT slot address for pointer
3324 equality reasons. */
3325 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3326 + htab->elf.iplt->output_offset
3327 + h->plt.offset),
3328 htab->elf.sgot->contents + h->got.offset);
3329 return TRUE;
3330 }
3331 }
0e1862bb 3332 else if (bfd_link_pic (info)
ceada896 3333 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3334 {
10e7c045
AK		 3335 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3336 return TRUE;
3337
470b557a
AK		 3338 /* If this is a static link, or it is a -Bsymbolic link and
3339 the symbol is defined locally or was forced to be local
3340 because of a version file, we just want to emit a
3341 RELATIVE reloc. The entry in the global offset table
3342 will already have been initialized in the
3343 relocate_section function. */
8170f769 3344 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3345 return FALSE;
0451c93c 3346 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3347 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3348 rela.r_addend = (h->root.u.def.value
3349 + h->root.u.def.section->output_section->vma
3350 + h->root.u.def.section->output_offset);
3351 }
a85d7ed0
NC		 3352 else
3353 {
3354 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3355 do_glob_dat:
f41345a7 3356 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3357 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3358 rela.r_addend = 0;
3359 }
a85d7ed0 3360
f41345a7
AK		 3361 loc = htab->elf.srelgot->contents;
3362 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3363 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3364 }
3365
f5385ebf 3366 if (h->needs_copy)
a85d7ed0 3367 {
a85d7ed0 3368 Elf_Internal_Rela rela;
5474d94f 3369 asection *s;
947216bf 3370 bfd_byte *loc;
a85d7ed0
NC		 3371
3372 /* This symbols needs a copy reloc. Set it up. */
3373
0451c93c
MS		 3374 if (h->dynindx == -1
3375 || (h->root.type != bfd_link_hash_defined
3376 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3377 || htab->elf.srelbss == NULL)
0451c93c 3378 abort ();
a85d7ed0
NC		 3379
3380 rela.r_offset = (h->root.u.def.value
3381 + h->root.u.def.section->output_section->vma
3382 + h->root.u.def.section->output_offset);
3383 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3384 rela.r_addend = 0;
afbf7e8e 3385 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3386 s = htab->elf.sreldynrelro;
3387 else
3388 s = htab->elf.srelbss;
3389 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3390 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3391 }
3392
3393 /* Mark some specially defined symbols as absolute. */
9637f6ef 3394 if (h == htab->elf.hdynamic
22edb2f1
RS		 3395 || h == htab->elf.hgot
3396 || h == htab->elf.hplt)
a85d7ed0
NC		 3397 sym->st_shndx = SHN_ABS;
3398
b34976b6 3399 return TRUE;
a85d7ed0
NC		 3400}
3401
0451c93c
MS		 3402/* Used to decide how to sort relocs in an optimal manner for the
3403 dynamic linker, before writing them out. */
3404
3405static enum elf_reloc_type_class
7e612e98
AM		 3406elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3407 const asection *rel_sec ATTRIBUTE_UNUSED,
3408 const Elf_Internal_Rela *rela)
0451c93c 3409{
0f042c67
AK		 3410 bfd *abfd = info->output_bfd;
3411 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3412 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3413 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3414 Elf_Internal_Sym sym;
3415
3416 if (htab->elf.dynsym == NULL
3417 || !bed->s->swap_symbol_in (abfd,
3418 (htab->elf.dynsym->contents
3419 + r_symndx * bed->s->sizeof_sym),
3420 0, &sym))
3421 abort ();
3422
3423 /* Check relocation against STT_GNU_IFUNC symbol. */
3424 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3425 return reloc_class_ifunc;
3426
0451c93c
MS		 3427 switch ((int) ELF64_R_TYPE (rela->r_info))
3428 {
3429 case R_390_RELATIVE:
3430 return reloc_class_relative;
3431 case R_390_JMP_SLOT:
3432 return reloc_class_plt;
3433 case R_390_COPY:
3434 return reloc_class_copy;
3435 default:
3436 return reloc_class_normal;
3437 }
3438}
3439
a85d7ed0
NC		 3440/* Finish up the dynamic sections. */
3441
b34976b6 3442static bfd_boolean
4dfe6ac6
NC		 3443elf_s390_finish_dynamic_sections (bfd *output_bfd,
3444 struct bfd_link_info *info)
a85d7ed0 3445{
0451c93c 3446 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3447 bfd *dynobj;
3448 asection *sdyn;
470b557a
AK		 3449 bfd *ibfd;
3450 unsigned int i;
a85d7ed0 3451
0451c93c 3452 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3453 if (htab == NULL)
3454 return FALSE;
3455
0451c93c 3456 dynobj = htab->elf.dynobj;
3d4d4302 3457 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3458
0451c93c 3459 if (htab->elf.dynamic_sections_created)
a85d7ed0 3460 {
a85d7ed0
NC		 3461 Elf64_External_Dyn *dyncon, *dynconend;
3462
f41345a7 3463 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3464 abort ();
a85d7ed0
NC		 3465
3466 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3467 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3468 for (; dyncon < dynconend; dyncon++)
3469 {
3470 Elf_Internal_Dyn dyn;
a85d7ed0 3471 asection *s;
ec338859 3472
a85d7ed0 3473 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3474
a85d7ed0
NC		 3475 switch (dyn.d_tag)
3476 {
3477 default:
0451c93c 3478 continue;
ec338859 3479
a85d7ed0 3480 case DT_PLTGOT:
afca762f
AK		 3481 /* DT_PLTGOT matches _GLOBAL_OFFSET_TABLE_ */
3482 dyn.d_un.d_ptr = s390_got_pointer (info);
0451c93c 3483 break;
ec338859 3484
a85d7ed0 3485 case DT_JMPREL:
4ade44b7
AM		 3486 s = htab->elf.srelplt;
3487 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3488 break;
ec338859 3489
a85d7ed0 3490 case DT_PLTRELSZ:
79c12fae
AK		 3491 dyn.d_un.d_val = htab->elf.srelplt->size;
3492 if (htab->elf.irelplt)
3493 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3494 break;
ec338859 3495
a85d7ed0
NC		 3496 case DT_RELASZ:
3497 /* The procedure linkage table relocs (DT_JMPREL) should
3498 not be included in the overall relocs (DT_RELA).
3499 Therefore, we override the DT_RELASZ entry here to
3500 make it not include the JMPREL relocs. Since the
3501 linker script arranges for .rela.plt to follow all
3502 other relocation sections, we don't have to worry
3503 about changing the DT_RELA entry. */
79c12fae
AK		 3504 dyn.d_un.d_val -= htab->elf.srelplt->size;
3505 if (htab->elf.irelplt)
3506 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3507 break;
3508 }
0451c93c
MS		 3509
3510 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3511 }
3512
3513 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3514 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3515 {
3516 /* fill in blueprint for plt 0 entry */
f41345a7 3517 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3518 PLT_FIRST_ENTRY_SIZE);
afca762f
AK		 3519 /* The second instruction in the first PLT entry is a LARL
3520 loading the GOT pointer. Fill in the LARL immediate
3521 address. */
a85d7ed0 3522 bfd_put_32 (output_bfd,
afca762f 3523 (s390_got_pointer (info)
161db279
AK		 3524 - htab->elf.splt->output_section->vma
3525 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3526 htab->elf.splt->contents + 8);
a85d7ed0 3527 }
387f8054
MR		 3528 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3529 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3530 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3531 }
3532
afca762f 3533 if (htab->elf.hgot && htab->elf.hgot->root.u.def.section)
a85d7ed0 3534 {
0451c93c 3535 /* Fill in the first three entries in the global offset table. */
afca762f 3536 if (htab->elf.hgot->root.u.def.section->size > 0)
0451c93c
MS		 3537 {
3538 bfd_put_64 (output_bfd,
3539 (sdyn == NULL ? (bfd_vma) 0
3540 : sdyn->output_section->vma + sdyn->output_offset),
afca762f 3541 htab->elf.hgot->root.u.def.section->contents);
0451c93c 3542 /* One entry for shared object struct ptr. */
afca762f
AK		 3543 bfd_put_64 (output_bfd, (bfd_vma) 0,
3544 htab->elf.hgot->root.u.def.section->contents + 8);
0451c93c 3545 /* One entry for _dl_runtime_resolve. */
afca762f
AK		 3546 bfd_put_64 (output_bfd, (bfd_vma) 0,
3547 htab->elf.hgot->root.u.def.section->contents + 16);
0451c93c 3548 }
f41345a7 3549 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3550 ->this_hdr.sh_entsize = 8;
3551 }
470b557a
AK		 3552
3553 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3554 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3555 {
3556 struct plt_entry *local_plt;
3557 Elf_Internal_Sym *isym;
3558 Elf_Internal_Shdr *symtab_hdr;
3559
3560 symtab_hdr = &elf_symtab_hdr (ibfd);
3561
1ef692ea
AK		 3562 if (!is_s390_elf (ibfd))
3563 continue;
3564
470b557a
AK		 3565 local_plt = elf_s390_local_plt (ibfd);
3566 if (local_plt != NULL)
3567 for (i = 0; i < symtab_hdr->sh_info; i++)
3568 {
3569 if (local_plt[i].plt.offset != (bfd_vma) -1)
3570 {
3571 asection *sec = local_plt[i].sec;
f1dfbfdb 3572 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, i);
470b557a
AK		 3573 if (isym == NULL)
3574 return FALSE;
3575
3576 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3577 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3578 local_plt[i].plt.offset,
3579 isym->st_value
3580 + sec->output_section->vma
3581 + sec->output_offset);
3582
3583 }
3584 }
3585 }
3586
b34976b6 3587 return TRUE;
a85d7ed0 3588}
e3e9290d
AA		 3589\f
3590/* Support for core dump NOTE sections. */
a85d7ed0 3591
e3e9290d
AA		 3592static bfd_boolean
3593elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3594{
3595 int offset;
3596 size_t size;
3597
3598 switch (note->descsz)
3599 {
3600 default:
3601 return FALSE;
3602
3603 case 336: /* sizeof(struct elf_prstatus) on s390x */
3604 /* pr_cursig */
3605 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3606
3607 /* pr_pid */
3608 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3609
3610 /* pr_reg */
3611 offset = 112;
3612 size = 216;
3613 break;
3614 }
3615
3616 /* Make a ".reg/999" section. */
3617 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3618 size, note->descpos + offset);
3619}
3620
3621static bfd_boolean
3622elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3623{
3624 switch (note->descsz)
3625 {
3626 default:
3627 return FALSE;
3628
3629 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3630 elf_tdata (abfd)->core->pid
3631 = bfd_get_32 (abfd, note->descdata + 24);
3632 elf_tdata (abfd)->core->program
3633 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3634 elf_tdata (abfd)->core->command
3635 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3636 }
3637
3638 /* Note that for some reason, a spurious space is tacked
3639 onto the end of the args in some (at least one anyway)
3640 implementations, so strip it off if it exists. */
3641
3642 {
3643 char *command = elf_tdata (abfd)->core->command;
3644 int n = strlen (command);
3645
3646 if (0 < n && command[n - 1] == ' ')
3647 command[n - 1] = '\0';
3648 }
3649
3650 return TRUE;
3651}
3652
3653static char *
3654elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3655 int note_type, ...)
3656{
3657 va_list ap;
3658
3659 switch (note_type)
3660 {
3661 default:
3662 return NULL;
3663
3664 case NT_PRPSINFO:
3665 {
602f1657 3666 char data[136] ATTRIBUTE_NONSTRING = { 0 };
e3e9290d
AA		 3667 const char *fname, *psargs;
3668
3669 va_start (ap, note_type);
3670 fname = va_arg (ap, const char *);
3671 psargs = va_arg (ap, const char *);
3672 va_end (ap);
3673
3674 strncpy (data + 40, fname, 16);
898ade12 3675#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3676 DIAGNOSTIC_PUSH;
be3e27bb 3677 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
95da9854
L		 3678 -Wstringop-truncation:
3679 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3680 */
95da9854
L		 3681 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
3682#endif
e3e9290d 3683 strncpy (data + 56, psargs, 80);
898ade12 3684#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3685 DIAGNOSTIC_POP;
fe75810f 3686#endif
e3e9290d
AA		 3687 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3688 &data, sizeof (data));
3689 }
3690
3691 case NT_PRSTATUS:
3692 {
3693 char data[336] = { 0 };
3694 long pid;
3695 int cursig;
3696 const void *gregs;
3697
3698 va_start (ap, note_type);
3699 pid = va_arg (ap, long);
3700 cursig = va_arg (ap, int);
3701 gregs = va_arg (ap, const void *);
3702 va_end (ap);
3703
3704 bfd_put_16 (abfd, cursig, data + 12);
3705 bfd_put_32 (abfd, pid, data + 32);
3706 memcpy (data + 112, gregs, 216);
3707 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3708 &data, sizeof (data));
3709 }
3710 }
3711 /* NOTREACHED */
3712}
3713\f
4c45e5c9
JJ		 3714/* Return address for Ith PLT stub in section PLT, for relocation REL
3715 or (bfd_vma) -1 if it should not be included. */
3716
3717static bfd_vma
3718elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3719 const arelent *rel ATTRIBUTE_UNUSED)
3720{
3721 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3722}
3723
643f7afb
AK		 3724/* Merge backend specific data from an object file to the output
3725 object file when linking. */
3726
3727static bfd_boolean
50e03d47 3728elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3729{
50e03d47 3730 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3731 return TRUE;
3732
50e03d47 3733 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3734}
3735
b4cbbe8f
AK		 3736/* We may add a PT_S390_PGSTE program header. */
3737
3738static int
3739elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3740 struct bfd_link_info *info)
3741{
3742 struct elf_s390_link_hash_table *htab;
3743
93ec5e23
AK		 3744 if (info)
3745 {
3746 htab = elf_s390_hash_table (info);
3747 if (htab)
3748 return htab->params->pgste;
3749 }
3750 return 0;
b4cbbe8f
AK		 3751}
3752
3753
3754/* Add the PT_S390_PGSTE program header. */
3755
3756static bfd_boolean
93ec5e23 3757elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 3758{
3759 struct elf_s390_link_hash_table *htab;
3760 struct elf_segment_map *m, *pm = NULL;
3761
93ec5e23
AK		 3762 if (!abfd || !info)
3763 return TRUE;
3764
b4cbbe8f 3765 htab = elf_s390_hash_table (info);
93ec5e23 3766 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 3767 return TRUE;
3768
3769 /* If there is already a PT_S390_PGSTE header, avoid adding
3770 another. */
3771 m = elf_seg_map (abfd);
3772 while (m && m->p_type != PT_S390_PGSTE)
3773 {
3774 pm = m;
3775 m = m->next;
3776 }
3777
3778 if (m)
3779 return TRUE;
3780
3781 m = (struct elf_segment_map *)
3782 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3783 if (m == NULL)
3784 return FALSE;
3785 m->p_type = PT_S390_PGSTE;
3786 m->count = 0;
3787 m->next = NULL;
3788 if (pm)
3789 pm->next = m;
3790
3791 return TRUE;
3792}
3793
3794bfd_boolean
3795bfd_elf_s390_set_options (struct bfd_link_info *info,
3796 struct s390_elf_params *params)
3797{
3798 struct elf_s390_link_hash_table *htab;
3799
93ec5e23
AK		 3800 if (info)
3801 {
3802 htab = elf_s390_hash_table (info);
3803 if (htab)
3804 htab->params = params;
3805 }
b4cbbe8f
AK		 3806
3807 return TRUE;
3808}
3809
3810
ae9a127f
NC		 3811/* Why was the hash table entry size definition changed from
3812 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3813 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3814
3815const struct elf_size_info s390_elf64_size_info =
3816{
3817 sizeof (Elf64_External_Ehdr),
3818 sizeof (Elf64_External_Phdr),
3819 sizeof (Elf64_External_Shdr),
3820 sizeof (Elf64_External_Rel),
3821 sizeof (Elf64_External_Rela),
3822 sizeof (Elf64_External_Sym),
3823 sizeof (Elf64_External_Dyn),
3824 sizeof (Elf_External_Note),
ae9a127f
NC		 3825 8, /* hash-table entry size. */
3826 1, /* internal relocations per external relocations. */
3827 64, /* arch_size. */
45d6a902 3828 3, /* log_file_align. */
a85d7ed0
NC		 3829 ELFCLASS64, EV_CURRENT,
3830 bfd_elf64_write_out_phdrs,
3831 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3832 bfd_elf64_checksum_contents,
a85d7ed0 3833 bfd_elf64_write_relocs,
73ff0d56 3834 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3835 bfd_elf64_swap_symbol_out,
3836 bfd_elf64_slurp_reloc_table,
3837 bfd_elf64_slurp_symbol_table,
3838 bfd_elf64_swap_dyn_in,
3839 bfd_elf64_swap_dyn_out,
947216bf
AM		 3840 bfd_elf64_swap_reloc_in,
3841 bfd_elf64_swap_reloc_out,
3842 bfd_elf64_swap_reloca_in,
3843 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3844};
3845
6d00b590 3846#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3847#define TARGET_BIG_NAME "elf64-s390"
3848#define ELF_ARCH bfd_arch_s390
ae95ffa6 3849#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3850#define ELF_MACHINE_CODE EM_S390
3851#define ELF_MACHINE_ALT1 EM_S390_OLD
3852#define ELF_MAXPAGESIZE 0x1000
3853
3854#define elf_backend_size_info s390_elf64_size_info
3855
3856#define elf_backend_can_gc_sections 1
51b64d56 3857#define elf_backend_can_refcount 1
a85d7ed0
NC		 3858#define elf_backend_want_got_plt 1
3859#define elf_backend_plt_readonly 1
3860#define elf_backend_want_plt_sym 0
3861#define elf_backend_got_header_size 24
5474d94f 3862#define elf_backend_want_dynrelro 1
b491616a 3863#define elf_backend_rela_normal 1
a85d7ed0
NC		 3864
3865#define elf_info_to_howto elf_s390_info_to_howto
3866
a85d7ed0
NC		 3867#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3868#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3869#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
07d6d2b8 3870#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
643f7afb 3871#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 3872
3873#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3874#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3875#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 3876#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 3877#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3878#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3879#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 3880#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3881#define elf_backend_relocate_section elf_s390_relocate_section
3882#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3883#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 3884#define elf_backend_grok_prstatus elf_s390_grok_prstatus
3885#define elf_backend_grok_psinfo elf_s390_grok_psinfo
3886#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 3887#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8 3888#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
b4cbbe8f
AK		 3889#define elf_backend_additional_program_headers elf_s390_additional_program_headers
3890#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 3891
69fc87f1
MS		 3892#define bfd_elf64_mkobject elf_s390_mkobject
3893#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3894
3895#include "elf64-target.h"
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